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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); | |
d4e0fe01 AD |
99 | } |
100 | ||
101 | static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, | |
102 | u32 status_err, struct sk_buff *skb) | |
103 | { | |
104 | skb->ip_summed = CHECKSUM_NONE; | |
105 | ||
106 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
0364d6fd AD |
107 | if ((status_err & E1000_RXD_STAT_IXSM) || |
108 | (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED)) | |
d4e0fe01 | 109 | return; |
0364d6fd | 110 | |
d4e0fe01 AD |
111 | /* TCP/UDP checksum error bit is set */ |
112 | if (status_err & | |
113 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
114 | /* let the stack verify checksum errors */ | |
115 | adapter->hw_csum_err++; | |
116 | return; | |
117 | } | |
0364d6fd | 118 | |
d4e0fe01 AD |
119 | /* It must be a TCP or UDP packet with a valid checksum */ |
120 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
121 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
122 | ||
123 | adapter->hw_csum_good++; | |
124 | } | |
125 | ||
126 | /** | |
127 | * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split | |
128 | * @rx_ring: address of ring structure to repopulate | |
129 | * @cleaned_count: number of buffers to repopulate | |
130 | **/ | |
131 | static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring, | |
132 | int cleaned_count) | |
133 | { | |
134 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
135 | struct net_device *netdev = adapter->netdev; | |
136 | struct pci_dev *pdev = adapter->pdev; | |
137 | union e1000_adv_rx_desc *rx_desc; | |
138 | struct igbvf_buffer *buffer_info; | |
139 | struct sk_buff *skb; | |
140 | unsigned int i; | |
141 | int bufsz; | |
142 | ||
143 | i = rx_ring->next_to_use; | |
144 | buffer_info = &rx_ring->buffer_info[i]; | |
145 | ||
146 | if (adapter->rx_ps_hdr_size) | |
147 | bufsz = adapter->rx_ps_hdr_size; | |
148 | else | |
149 | bufsz = adapter->rx_buffer_len; | |
d4e0fe01 AD |
150 | |
151 | while (cleaned_count--) { | |
152 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
153 | ||
154 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { | |
155 | if (!buffer_info->page) { | |
156 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
157 | if (!buffer_info->page) { | |
158 | adapter->alloc_rx_buff_failed++; | |
159 | goto no_buffers; | |
160 | } | |
161 | buffer_info->page_offset = 0; | |
162 | } else { | |
163 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
164 | } | |
165 | buffer_info->page_dma = | |
166 | pci_map_page(pdev, buffer_info->page, | |
167 | buffer_info->page_offset, | |
168 | PAGE_SIZE / 2, | |
169 | PCI_DMA_FROMDEVICE); | |
170 | } | |
171 | ||
172 | if (!buffer_info->skb) { | |
89d71a66 | 173 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
d4e0fe01 AD |
174 | if (!skb) { |
175 | adapter->alloc_rx_buff_failed++; | |
176 | goto no_buffers; | |
177 | } | |
178 | ||
d4e0fe01 AD |
179 | buffer_info->skb = skb; |
180 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
181 | bufsz, | |
182 | PCI_DMA_FROMDEVICE); | |
183 | } | |
184 | /* Refresh the desc even if buffer_addrs didn't change because | |
185 | * each write-back erases this info. */ | |
186 | if (adapter->rx_ps_hdr_size) { | |
187 | rx_desc->read.pkt_addr = | |
188 | cpu_to_le64(buffer_info->page_dma); | |
189 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
190 | } else { | |
191 | rx_desc->read.pkt_addr = | |
192 | cpu_to_le64(buffer_info->dma); | |
193 | rx_desc->read.hdr_addr = 0; | |
194 | } | |
195 | ||
196 | i++; | |
197 | if (i == rx_ring->count) | |
198 | i = 0; | |
199 | buffer_info = &rx_ring->buffer_info[i]; | |
200 | } | |
201 | ||
202 | no_buffers: | |
203 | if (rx_ring->next_to_use != i) { | |
204 | rx_ring->next_to_use = i; | |
205 | if (i == 0) | |
206 | i = (rx_ring->count - 1); | |
207 | else | |
208 | i--; | |
209 | ||
210 | /* Force memory writes to complete before letting h/w | |
211 | * know there are new descriptors to fetch. (Only | |
212 | * applicable for weak-ordered memory model archs, | |
213 | * such as IA-64). */ | |
214 | wmb(); | |
215 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
216 | } | |
217 | } | |
218 | ||
219 | /** | |
220 | * igbvf_clean_rx_irq - Send received data up the network stack; legacy | |
221 | * @adapter: board private structure | |
222 | * | |
223 | * the return value indicates whether actual cleaning was done, there | |
224 | * is no guarantee that everything was cleaned | |
225 | **/ | |
226 | static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter, | |
227 | int *work_done, int work_to_do) | |
228 | { | |
229 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
230 | struct net_device *netdev = adapter->netdev; | |
231 | struct pci_dev *pdev = adapter->pdev; | |
232 | union e1000_adv_rx_desc *rx_desc, *next_rxd; | |
233 | struct igbvf_buffer *buffer_info, *next_buffer; | |
234 | struct sk_buff *skb; | |
235 | bool cleaned = false; | |
236 | int cleaned_count = 0; | |
237 | unsigned int total_bytes = 0, total_packets = 0; | |
238 | unsigned int i; | |
239 | u32 length, hlen, staterr; | |
240 | ||
241 | i = rx_ring->next_to_clean; | |
242 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
243 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
244 | ||
245 | while (staterr & E1000_RXD_STAT_DD) { | |
246 | if (*work_done >= work_to_do) | |
247 | break; | |
248 | (*work_done)++; | |
249 | ||
250 | buffer_info = &rx_ring->buffer_info[i]; | |
251 | ||
252 | /* HW will not DMA in data larger than the given buffer, even | |
253 | * if it parses the (NFS, of course) header to be larger. In | |
254 | * that case, it fills the header buffer and spills the rest | |
255 | * into the page. | |
256 | */ | |
257 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) & | |
258 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
259 | if (hlen > adapter->rx_ps_hdr_size) | |
260 | hlen = adapter->rx_ps_hdr_size; | |
261 | ||
262 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
263 | cleaned = true; | |
264 | cleaned_count++; | |
265 | ||
266 | skb = buffer_info->skb; | |
267 | prefetch(skb->data - NET_IP_ALIGN); | |
268 | buffer_info->skb = NULL; | |
269 | if (!adapter->rx_ps_hdr_size) { | |
270 | pci_unmap_single(pdev, buffer_info->dma, | |
271 | adapter->rx_buffer_len, | |
272 | PCI_DMA_FROMDEVICE); | |
273 | buffer_info->dma = 0; | |
274 | skb_put(skb, length); | |
275 | goto send_up; | |
276 | } | |
277 | ||
278 | if (!skb_shinfo(skb)->nr_frags) { | |
279 | pci_unmap_single(pdev, buffer_info->dma, | |
92d947b7 | 280 | adapter->rx_ps_hdr_size, |
d4e0fe01 AD |
281 | PCI_DMA_FROMDEVICE); |
282 | skb_put(skb, hlen); | |
283 | } | |
284 | ||
285 | if (length) { | |
286 | pci_unmap_page(pdev, buffer_info->page_dma, | |
287 | PAGE_SIZE / 2, | |
288 | PCI_DMA_FROMDEVICE); | |
289 | buffer_info->page_dma = 0; | |
290 | ||
291 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, | |
292 | buffer_info->page, | |
293 | buffer_info->page_offset, | |
294 | length); | |
295 | ||
296 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
297 | (page_count(buffer_info->page) != 1)) | |
298 | buffer_info->page = NULL; | |
299 | else | |
300 | get_page(buffer_info->page); | |
301 | ||
302 | skb->len += length; | |
303 | skb->data_len += length; | |
304 | skb->truesize += length; | |
305 | } | |
306 | send_up: | |
307 | i++; | |
308 | if (i == rx_ring->count) | |
309 | i = 0; | |
310 | next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
311 | prefetch(next_rxd); | |
312 | next_buffer = &rx_ring->buffer_info[i]; | |
313 | ||
314 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
315 | buffer_info->skb = next_buffer->skb; | |
316 | buffer_info->dma = next_buffer->dma; | |
317 | next_buffer->skb = skb; | |
318 | next_buffer->dma = 0; | |
319 | goto next_desc; | |
320 | } | |
321 | ||
322 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
323 | dev_kfree_skb_irq(skb); | |
324 | goto next_desc; | |
325 | } | |
326 | ||
327 | total_bytes += skb->len; | |
328 | total_packets++; | |
329 | ||
330 | igbvf_rx_checksum_adv(adapter, staterr, skb); | |
331 | ||
332 | skb->protocol = eth_type_trans(skb, netdev); | |
333 | ||
334 | igbvf_receive_skb(adapter, netdev, skb, staterr, | |
335 | rx_desc->wb.upper.vlan); | |
336 | ||
d4e0fe01 AD |
337 | next_desc: |
338 | rx_desc->wb.upper.status_error = 0; | |
339 | ||
340 | /* return some buffers to hardware, one at a time is too slow */ | |
341 | if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) { | |
342 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
343 | cleaned_count = 0; | |
344 | } | |
345 | ||
346 | /* use prefetched values */ | |
347 | rx_desc = next_rxd; | |
348 | buffer_info = next_buffer; | |
349 | ||
350 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
351 | } | |
352 | ||
353 | rx_ring->next_to_clean = i; | |
354 | cleaned_count = igbvf_desc_unused(rx_ring); | |
355 | ||
356 | if (cleaned_count) | |
357 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
358 | ||
359 | adapter->total_rx_packets += total_packets; | |
360 | adapter->total_rx_bytes += total_bytes; | |
361 | adapter->net_stats.rx_bytes += total_bytes; | |
362 | adapter->net_stats.rx_packets += total_packets; | |
363 | return cleaned; | |
364 | } | |
365 | ||
366 | static void igbvf_put_txbuf(struct igbvf_adapter *adapter, | |
367 | struct igbvf_buffer *buffer_info) | |
368 | { | |
a7d5ca40 AD |
369 | if (buffer_info->dma) { |
370 | if (buffer_info->mapped_as_page) | |
371 | pci_unmap_page(adapter->pdev, | |
372 | buffer_info->dma, | |
373 | buffer_info->length, | |
374 | PCI_DMA_TODEVICE); | |
375 | else | |
376 | pci_unmap_single(adapter->pdev, | |
377 | buffer_info->dma, | |
378 | buffer_info->length, | |
379 | PCI_DMA_TODEVICE); | |
380 | buffer_info->dma = 0; | |
381 | } | |
d4e0fe01 | 382 | if (buffer_info->skb) { |
d4e0fe01 AD |
383 | dev_kfree_skb_any(buffer_info->skb); |
384 | buffer_info->skb = NULL; | |
385 | } | |
386 | buffer_info->time_stamp = 0; | |
387 | } | |
388 | ||
389 | static void igbvf_print_tx_hang(struct igbvf_adapter *adapter) | |
390 | { | |
391 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
392 | unsigned int i = tx_ring->next_to_clean; | |
393 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
394 | union e1000_adv_tx_desc *eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
395 | ||
396 | /* detected Tx unit hang */ | |
397 | dev_err(&adapter->pdev->dev, | |
398 | "Detected Tx Unit Hang:\n" | |
399 | " TDH <%x>\n" | |
400 | " TDT <%x>\n" | |
401 | " next_to_use <%x>\n" | |
402 | " next_to_clean <%x>\n" | |
403 | "buffer_info[next_to_clean]:\n" | |
404 | " time_stamp <%lx>\n" | |
405 | " next_to_watch <%x>\n" | |
406 | " jiffies <%lx>\n" | |
407 | " next_to_watch.status <%x>\n", | |
408 | readl(adapter->hw.hw_addr + tx_ring->head), | |
409 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
410 | tx_ring->next_to_use, | |
411 | tx_ring->next_to_clean, | |
412 | tx_ring->buffer_info[eop].time_stamp, | |
413 | eop, | |
414 | jiffies, | |
415 | eop_desc->wb.status); | |
416 | } | |
417 | ||
418 | /** | |
419 | * igbvf_setup_tx_resources - allocate Tx resources (Descriptors) | |
420 | * @adapter: board private structure | |
421 | * | |
422 | * Return 0 on success, negative on failure | |
423 | **/ | |
424 | int igbvf_setup_tx_resources(struct igbvf_adapter *adapter, | |
425 | struct igbvf_ring *tx_ring) | |
426 | { | |
427 | struct pci_dev *pdev = adapter->pdev; | |
428 | int size; | |
429 | ||
430 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
431 | tx_ring->buffer_info = vmalloc(size); | |
432 | if (!tx_ring->buffer_info) | |
433 | goto err; | |
434 | memset(tx_ring->buffer_info, 0, size); | |
435 | ||
436 | /* round up to nearest 4K */ | |
437 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); | |
438 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
439 | ||
440 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, | |
441 | &tx_ring->dma); | |
442 | ||
443 | if (!tx_ring->desc) | |
444 | goto err; | |
445 | ||
446 | tx_ring->adapter = adapter; | |
447 | tx_ring->next_to_use = 0; | |
448 | tx_ring->next_to_clean = 0; | |
449 | ||
450 | return 0; | |
451 | err: | |
452 | vfree(tx_ring->buffer_info); | |
453 | dev_err(&adapter->pdev->dev, | |
454 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
455 | return -ENOMEM; | |
456 | } | |
457 | ||
458 | /** | |
459 | * igbvf_setup_rx_resources - allocate Rx resources (Descriptors) | |
460 | * @adapter: board private structure | |
461 | * | |
462 | * Returns 0 on success, negative on failure | |
463 | **/ | |
464 | int igbvf_setup_rx_resources(struct igbvf_adapter *adapter, | |
465 | struct igbvf_ring *rx_ring) | |
466 | { | |
467 | struct pci_dev *pdev = adapter->pdev; | |
468 | int size, desc_len; | |
469 | ||
470 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
471 | rx_ring->buffer_info = vmalloc(size); | |
472 | if (!rx_ring->buffer_info) | |
473 | goto err; | |
474 | memset(rx_ring->buffer_info, 0, size); | |
475 | ||
476 | desc_len = sizeof(union e1000_adv_rx_desc); | |
477 | ||
478 | /* Round up to nearest 4K */ | |
479 | rx_ring->size = rx_ring->count * desc_len; | |
480 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
481 | ||
482 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, | |
483 | &rx_ring->dma); | |
484 | ||
485 | if (!rx_ring->desc) | |
486 | goto err; | |
487 | ||
488 | rx_ring->next_to_clean = 0; | |
489 | rx_ring->next_to_use = 0; | |
490 | ||
491 | rx_ring->adapter = adapter; | |
492 | ||
493 | return 0; | |
494 | ||
495 | err: | |
496 | vfree(rx_ring->buffer_info); | |
497 | rx_ring->buffer_info = NULL; | |
498 | dev_err(&adapter->pdev->dev, | |
499 | "Unable to allocate memory for the receive descriptor ring\n"); | |
500 | return -ENOMEM; | |
501 | } | |
502 | ||
503 | /** | |
504 | * igbvf_clean_tx_ring - Free Tx Buffers | |
505 | * @tx_ring: ring to be cleaned | |
506 | **/ | |
507 | static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring) | |
508 | { | |
509 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
510 | struct igbvf_buffer *buffer_info; | |
511 | unsigned long size; | |
512 | unsigned int i; | |
513 | ||
514 | if (!tx_ring->buffer_info) | |
515 | return; | |
516 | ||
517 | /* Free all the Tx ring sk_buffs */ | |
518 | for (i = 0; i < tx_ring->count; i++) { | |
519 | buffer_info = &tx_ring->buffer_info[i]; | |
520 | igbvf_put_txbuf(adapter, buffer_info); | |
521 | } | |
522 | ||
523 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
524 | memset(tx_ring->buffer_info, 0, size); | |
525 | ||
526 | /* Zero out the descriptor ring */ | |
527 | memset(tx_ring->desc, 0, tx_ring->size); | |
528 | ||
529 | tx_ring->next_to_use = 0; | |
530 | tx_ring->next_to_clean = 0; | |
531 | ||
532 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
533 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
534 | } | |
535 | ||
536 | /** | |
537 | * igbvf_free_tx_resources - Free Tx Resources per Queue | |
538 | * @tx_ring: ring to free resources from | |
539 | * | |
540 | * Free all transmit software resources | |
541 | **/ | |
542 | void igbvf_free_tx_resources(struct igbvf_ring *tx_ring) | |
543 | { | |
544 | struct pci_dev *pdev = tx_ring->adapter->pdev; | |
545 | ||
546 | igbvf_clean_tx_ring(tx_ring); | |
547 | ||
548 | vfree(tx_ring->buffer_info); | |
549 | tx_ring->buffer_info = NULL; | |
550 | ||
551 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
552 | ||
553 | tx_ring->desc = NULL; | |
554 | } | |
555 | ||
556 | /** | |
557 | * igbvf_clean_rx_ring - Free Rx Buffers per Queue | |
558 | * @adapter: board private structure | |
559 | **/ | |
560 | static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring) | |
561 | { | |
562 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
563 | struct igbvf_buffer *buffer_info; | |
564 | struct pci_dev *pdev = adapter->pdev; | |
565 | unsigned long size; | |
566 | unsigned int i; | |
567 | ||
568 | if (!rx_ring->buffer_info) | |
569 | return; | |
570 | ||
571 | /* Free all the Rx ring sk_buffs */ | |
572 | for (i = 0; i < rx_ring->count; i++) { | |
573 | buffer_info = &rx_ring->buffer_info[i]; | |
574 | if (buffer_info->dma) { | |
575 | if (adapter->rx_ps_hdr_size){ | |
576 | pci_unmap_single(pdev, buffer_info->dma, | |
577 | adapter->rx_ps_hdr_size, | |
578 | PCI_DMA_FROMDEVICE); | |
579 | } else { | |
580 | pci_unmap_single(pdev, buffer_info->dma, | |
581 | adapter->rx_buffer_len, | |
582 | PCI_DMA_FROMDEVICE); | |
583 | } | |
584 | buffer_info->dma = 0; | |
585 | } | |
586 | ||
587 | if (buffer_info->skb) { | |
588 | dev_kfree_skb(buffer_info->skb); | |
589 | buffer_info->skb = NULL; | |
590 | } | |
591 | ||
592 | if (buffer_info->page) { | |
593 | if (buffer_info->page_dma) | |
594 | pci_unmap_page(pdev, buffer_info->page_dma, | |
595 | PAGE_SIZE / 2, | |
596 | PCI_DMA_FROMDEVICE); | |
597 | put_page(buffer_info->page); | |
598 | buffer_info->page = NULL; | |
599 | buffer_info->page_dma = 0; | |
600 | buffer_info->page_offset = 0; | |
601 | } | |
602 | } | |
603 | ||
604 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
605 | memset(rx_ring->buffer_info, 0, size); | |
606 | ||
607 | /* Zero out the descriptor ring */ | |
608 | memset(rx_ring->desc, 0, rx_ring->size); | |
609 | ||
610 | rx_ring->next_to_clean = 0; | |
611 | rx_ring->next_to_use = 0; | |
612 | ||
613 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
614 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
615 | } | |
616 | ||
617 | /** | |
618 | * igbvf_free_rx_resources - Free Rx Resources | |
619 | * @rx_ring: ring to clean the resources from | |
620 | * | |
621 | * Free all receive software resources | |
622 | **/ | |
623 | ||
624 | void igbvf_free_rx_resources(struct igbvf_ring *rx_ring) | |
625 | { | |
626 | struct pci_dev *pdev = rx_ring->adapter->pdev; | |
627 | ||
628 | igbvf_clean_rx_ring(rx_ring); | |
629 | ||
630 | vfree(rx_ring->buffer_info); | |
631 | rx_ring->buffer_info = NULL; | |
632 | ||
633 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
634 | rx_ring->dma); | |
635 | rx_ring->desc = NULL; | |
636 | } | |
637 | ||
638 | /** | |
639 | * igbvf_update_itr - update the dynamic ITR value based on statistics | |
640 | * @adapter: pointer to adapter | |
641 | * @itr_setting: current adapter->itr | |
642 | * @packets: the number of packets during this measurement interval | |
643 | * @bytes: the number of bytes during this measurement interval | |
644 | * | |
645 | * Stores a new ITR value based on packets and byte | |
646 | * counts during the last interrupt. The advantage of per interrupt | |
647 | * computation is faster updates and more accurate ITR for the current | |
648 | * traffic pattern. Constants in this function were computed | |
649 | * based on theoretical maximum wire speed and thresholds were set based | |
650 | * on testing data as well as attempting to minimize response time | |
651 | * while increasing bulk throughput. This functionality is controlled | |
652 | * by the InterruptThrottleRate module parameter. | |
653 | **/ | |
654 | static unsigned int igbvf_update_itr(struct igbvf_adapter *adapter, | |
655 | u16 itr_setting, int packets, | |
656 | int bytes) | |
657 | { | |
658 | unsigned int retval = itr_setting; | |
659 | ||
660 | if (packets == 0) | |
661 | goto update_itr_done; | |
662 | ||
663 | switch (itr_setting) { | |
664 | case lowest_latency: | |
665 | /* handle TSO and jumbo frames */ | |
666 | if (bytes/packets > 8000) | |
667 | retval = bulk_latency; | |
668 | else if ((packets < 5) && (bytes > 512)) | |
669 | retval = low_latency; | |
670 | break; | |
671 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
672 | if (bytes > 10000) { | |
673 | /* this if handles the TSO accounting */ | |
674 | if (bytes/packets > 8000) | |
675 | retval = bulk_latency; | |
676 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
677 | retval = bulk_latency; | |
678 | else if ((packets > 35)) | |
679 | retval = lowest_latency; | |
680 | } else if (bytes/packets > 2000) { | |
681 | retval = bulk_latency; | |
682 | } else if (packets <= 2 && bytes < 512) { | |
683 | retval = lowest_latency; | |
684 | } | |
685 | break; | |
686 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
687 | if (bytes > 25000) { | |
688 | if (packets > 35) | |
689 | retval = low_latency; | |
690 | } else if (bytes < 6000) { | |
691 | retval = low_latency; | |
692 | } | |
693 | break; | |
694 | } | |
695 | ||
696 | update_itr_done: | |
697 | return retval; | |
698 | } | |
699 | ||
700 | static void igbvf_set_itr(struct igbvf_adapter *adapter) | |
701 | { | |
702 | struct e1000_hw *hw = &adapter->hw; | |
703 | u16 current_itr; | |
704 | u32 new_itr = adapter->itr; | |
705 | ||
706 | adapter->tx_itr = igbvf_update_itr(adapter, adapter->tx_itr, | |
707 | adapter->total_tx_packets, | |
708 | adapter->total_tx_bytes); | |
709 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
710 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
711 | adapter->tx_itr = low_latency; | |
712 | ||
713 | adapter->rx_itr = igbvf_update_itr(adapter, adapter->rx_itr, | |
714 | adapter->total_rx_packets, | |
715 | adapter->total_rx_bytes); | |
716 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
717 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
718 | adapter->rx_itr = low_latency; | |
719 | ||
720 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
721 | ||
722 | switch (current_itr) { | |
723 | /* counts and packets in update_itr are dependent on these numbers */ | |
724 | case lowest_latency: | |
725 | new_itr = 70000; | |
726 | break; | |
727 | case low_latency: | |
728 | new_itr = 20000; /* aka hwitr = ~200 */ | |
729 | break; | |
730 | case bulk_latency: | |
731 | new_itr = 4000; | |
732 | break; | |
733 | default: | |
734 | break; | |
735 | } | |
736 | ||
737 | if (new_itr != adapter->itr) { | |
738 | /* | |
739 | * this attempts to bias the interrupt rate towards Bulk | |
740 | * by adding intermediate steps when interrupt rate is | |
741 | * increasing | |
742 | */ | |
743 | new_itr = new_itr > adapter->itr ? | |
744 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
745 | new_itr; | |
746 | adapter->itr = new_itr; | |
747 | adapter->rx_ring->itr_val = 1952; | |
748 | ||
749 | if (adapter->msix_entries) | |
750 | adapter->rx_ring->set_itr = 1; | |
751 | else | |
752 | ew32(ITR, 1952); | |
753 | } | |
754 | } | |
755 | ||
756 | /** | |
757 | * igbvf_clean_tx_irq - Reclaim resources after transmit completes | |
758 | * @adapter: board private structure | |
759 | * returns true if ring is completely cleaned | |
760 | **/ | |
761 | static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring) | |
762 | { | |
763 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
764 | struct e1000_hw *hw = &adapter->hw; | |
765 | struct net_device *netdev = adapter->netdev; | |
766 | struct igbvf_buffer *buffer_info; | |
767 | struct sk_buff *skb; | |
768 | union e1000_adv_tx_desc *tx_desc, *eop_desc; | |
769 | unsigned int total_bytes = 0, total_packets = 0; | |
770 | unsigned int i, eop, count = 0; | |
771 | bool cleaned = false; | |
772 | ||
773 | i = tx_ring->next_to_clean; | |
774 | eop = tx_ring->buffer_info[i].next_to_watch; | |
775 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
776 | ||
777 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
778 | (count < tx_ring->count)) { | |
779 | for (cleaned = false; !cleaned; count++) { | |
780 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
781 | buffer_info = &tx_ring->buffer_info[i]; | |
782 | cleaned = (i == eop); | |
783 | skb = buffer_info->skb; | |
784 | ||
785 | if (skb) { | |
786 | unsigned int segs, bytecount; | |
787 | ||
788 | /* gso_segs is currently only valid for tcp */ | |
789 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
790 | /* multiply data chunks by size of headers */ | |
791 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
792 | skb->len; | |
793 | total_packets += segs; | |
794 | total_bytes += bytecount; | |
795 | } | |
796 | ||
797 | igbvf_put_txbuf(adapter, buffer_info); | |
798 | tx_desc->wb.status = 0; | |
799 | ||
800 | i++; | |
801 | if (i == tx_ring->count) | |
802 | i = 0; | |
803 | } | |
804 | eop = tx_ring->buffer_info[i].next_to_watch; | |
805 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
806 | } | |
807 | ||
808 | tx_ring->next_to_clean = i; | |
809 | ||
810 | if (unlikely(count && | |
811 | netif_carrier_ok(netdev) && | |
812 | igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) { | |
813 | /* Make sure that anybody stopping the queue after this | |
814 | * sees the new next_to_clean. | |
815 | */ | |
816 | smp_mb(); | |
817 | if (netif_queue_stopped(netdev) && | |
818 | !(test_bit(__IGBVF_DOWN, &adapter->state))) { | |
819 | netif_wake_queue(netdev); | |
820 | ++adapter->restart_queue; | |
821 | } | |
822 | } | |
823 | ||
824 | if (adapter->detect_tx_hung) { | |
825 | /* Detect a transmit hang in hardware, this serializes the | |
826 | * check with the clearing of time_stamp and movement of i */ | |
827 | adapter->detect_tx_hung = false; | |
828 | if (tx_ring->buffer_info[i].time_stamp && | |
829 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + | |
8e95a202 JP |
830 | (adapter->tx_timeout_factor * HZ)) && |
831 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
d4e0fe01 AD |
832 | |
833 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
834 | /* detected Tx unit hang */ | |
835 | igbvf_print_tx_hang(adapter); | |
836 | ||
837 | netif_stop_queue(netdev); | |
838 | } | |
839 | } | |
840 | adapter->net_stats.tx_bytes += total_bytes; | |
841 | adapter->net_stats.tx_packets += total_packets; | |
842 | return (count < tx_ring->count); | |
843 | } | |
844 | ||
845 | static irqreturn_t igbvf_msix_other(int irq, void *data) | |
846 | { | |
847 | struct net_device *netdev = data; | |
848 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
849 | struct e1000_hw *hw = &adapter->hw; | |
850 | ||
851 | adapter->int_counter1++; | |
852 | ||
853 | netif_carrier_off(netdev); | |
854 | hw->mac.get_link_status = 1; | |
855 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
856 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
857 | ||
858 | ew32(EIMS, adapter->eims_other); | |
859 | ||
860 | return IRQ_HANDLED; | |
861 | } | |
862 | ||
863 | static irqreturn_t igbvf_intr_msix_tx(int irq, void *data) | |
864 | { | |
865 | struct net_device *netdev = data; | |
866 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
867 | struct e1000_hw *hw = &adapter->hw; | |
868 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
869 | ||
870 | ||
871 | adapter->total_tx_bytes = 0; | |
872 | adapter->total_tx_packets = 0; | |
873 | ||
874 | /* auto mask will automatically reenable the interrupt when we write | |
875 | * EICS */ | |
876 | if (!igbvf_clean_tx_irq(tx_ring)) | |
877 | /* Ring was not completely cleaned, so fire another interrupt */ | |
878 | ew32(EICS, tx_ring->eims_value); | |
879 | else | |
880 | ew32(EIMS, tx_ring->eims_value); | |
881 | ||
882 | return IRQ_HANDLED; | |
883 | } | |
884 | ||
885 | static irqreturn_t igbvf_intr_msix_rx(int irq, void *data) | |
886 | { | |
887 | struct net_device *netdev = data; | |
888 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
889 | ||
890 | adapter->int_counter0++; | |
891 | ||
892 | /* Write the ITR value calculated at the end of the | |
893 | * previous interrupt. | |
894 | */ | |
895 | if (adapter->rx_ring->set_itr) { | |
896 | writel(adapter->rx_ring->itr_val, | |
897 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
898 | adapter->rx_ring->set_itr = 0; | |
899 | } | |
900 | ||
901 | if (napi_schedule_prep(&adapter->rx_ring->napi)) { | |
902 | adapter->total_rx_bytes = 0; | |
903 | adapter->total_rx_packets = 0; | |
904 | __napi_schedule(&adapter->rx_ring->napi); | |
905 | } | |
906 | ||
907 | return IRQ_HANDLED; | |
908 | } | |
909 | ||
910 | #define IGBVF_NO_QUEUE -1 | |
911 | ||
912 | static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue, | |
913 | int tx_queue, int msix_vector) | |
914 | { | |
915 | struct e1000_hw *hw = &adapter->hw; | |
916 | u32 ivar, index; | |
917 | ||
918 | /* 82576 uses a table-based method for assigning vectors. | |
919 | Each queue has a single entry in the table to which we write | |
920 | a vector number along with a "valid" bit. Sadly, the layout | |
921 | of the table is somewhat counterintuitive. */ | |
922 | if (rx_queue > IGBVF_NO_QUEUE) { | |
923 | index = (rx_queue >> 1); | |
924 | ivar = array_er32(IVAR0, index); | |
925 | if (rx_queue & 0x1) { | |
926 | /* vector goes into third byte of register */ | |
927 | ivar = ivar & 0xFF00FFFF; | |
928 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
929 | } else { | |
930 | /* vector goes into low byte of register */ | |
931 | ivar = ivar & 0xFFFFFF00; | |
932 | ivar |= msix_vector | E1000_IVAR_VALID; | |
933 | } | |
934 | adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector; | |
935 | array_ew32(IVAR0, index, ivar); | |
936 | } | |
937 | if (tx_queue > IGBVF_NO_QUEUE) { | |
938 | index = (tx_queue >> 1); | |
939 | ivar = array_er32(IVAR0, index); | |
940 | if (tx_queue & 0x1) { | |
941 | /* vector goes into high byte of register */ | |
942 | ivar = ivar & 0x00FFFFFF; | |
943 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
944 | } else { | |
945 | /* vector goes into second byte of register */ | |
946 | ivar = ivar & 0xFFFF00FF; | |
947 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
948 | } | |
949 | adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector; | |
950 | array_ew32(IVAR0, index, ivar); | |
951 | } | |
952 | } | |
953 | ||
954 | /** | |
955 | * igbvf_configure_msix - Configure MSI-X hardware | |
956 | * | |
957 | * igbvf_configure_msix sets up the hardware to properly | |
958 | * generate MSI-X interrupts. | |
959 | **/ | |
960 | static void igbvf_configure_msix(struct igbvf_adapter *adapter) | |
961 | { | |
962 | u32 tmp; | |
963 | struct e1000_hw *hw = &adapter->hw; | |
964 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
965 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
966 | int vector = 0; | |
967 | ||
968 | adapter->eims_enable_mask = 0; | |
969 | ||
970 | igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++); | |
971 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
972 | if (tx_ring->itr_val) | |
973 | writel(tx_ring->itr_val, | |
974 | hw->hw_addr + tx_ring->itr_register); | |
975 | else | |
976 | writel(1952, hw->hw_addr + tx_ring->itr_register); | |
977 | ||
978 | igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++); | |
979 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
980 | if (rx_ring->itr_val) | |
981 | writel(rx_ring->itr_val, | |
982 | hw->hw_addr + rx_ring->itr_register); | |
983 | else | |
984 | writel(1952, hw->hw_addr + rx_ring->itr_register); | |
985 | ||
986 | /* set vector for other causes, i.e. link changes */ | |
987 | ||
988 | tmp = (vector++ | E1000_IVAR_VALID); | |
989 | ||
990 | ew32(IVAR_MISC, tmp); | |
991 | ||
992 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
993 | adapter->eims_other = 1 << (vector - 1); | |
994 | e1e_flush(); | |
995 | } | |
996 | ||
2d165771 | 997 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
998 | { |
999 | if (adapter->msix_entries) { | |
1000 | pci_disable_msix(adapter->pdev); | |
1001 | kfree(adapter->msix_entries); | |
1002 | adapter->msix_entries = NULL; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | /** | |
1007 | * igbvf_set_interrupt_capability - set MSI or MSI-X if supported | |
1008 | * | |
1009 | * Attempt to configure interrupts using the best available | |
1010 | * capabilities of the hardware and kernel. | |
1011 | **/ | |
2d165771 | 1012 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1013 | { |
1014 | int err = -ENOMEM; | |
1015 | int i; | |
1016 | ||
1017 | /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */ | |
1018 | adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry), | |
1019 | GFP_KERNEL); | |
1020 | if (adapter->msix_entries) { | |
1021 | for (i = 0; i < 3; i++) | |
1022 | adapter->msix_entries[i].entry = i; | |
1023 | ||
1024 | err = pci_enable_msix(adapter->pdev, | |
1025 | adapter->msix_entries, 3); | |
1026 | } | |
1027 | ||
1028 | if (err) { | |
1029 | /* MSI-X failed */ | |
1030 | dev_err(&adapter->pdev->dev, | |
1031 | "Failed to initialize MSI-X interrupts.\n"); | |
1032 | igbvf_reset_interrupt_capability(adapter); | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | /** | |
1037 | * igbvf_request_msix - Initialize MSI-X interrupts | |
1038 | * | |
1039 | * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the | |
1040 | * kernel. | |
1041 | **/ | |
1042 | static int igbvf_request_msix(struct igbvf_adapter *adapter) | |
1043 | { | |
1044 | struct net_device *netdev = adapter->netdev; | |
1045 | int err = 0, vector = 0; | |
1046 | ||
1047 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) { | |
1048 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); | |
1049 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); | |
1050 | } else { | |
1051 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1052 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1053 | } | |
1054 | ||
1055 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1056 | igbvf_intr_msix_tx, 0, adapter->tx_ring->name, |
d4e0fe01 AD |
1057 | netdev); |
1058 | if (err) | |
1059 | goto out; | |
1060 | ||
1061 | adapter->tx_ring->itr_register = E1000_EITR(vector); | |
1062 | adapter->tx_ring->itr_val = 1952; | |
1063 | vector++; | |
1064 | ||
1065 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1066 | igbvf_intr_msix_rx, 0, adapter->rx_ring->name, |
d4e0fe01 AD |
1067 | netdev); |
1068 | if (err) | |
1069 | goto out; | |
1070 | ||
1071 | adapter->rx_ring->itr_register = E1000_EITR(vector); | |
1072 | adapter->rx_ring->itr_val = 1952; | |
1073 | vector++; | |
1074 | ||
1075 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1076 | igbvf_msix_other, 0, netdev->name, netdev); |
d4e0fe01 AD |
1077 | if (err) |
1078 | goto out; | |
1079 | ||
1080 | igbvf_configure_msix(adapter); | |
1081 | return 0; | |
1082 | out: | |
1083 | return err; | |
1084 | } | |
1085 | ||
1086 | /** | |
1087 | * igbvf_alloc_queues - Allocate memory for all rings | |
1088 | * @adapter: board private structure to initialize | |
1089 | **/ | |
1090 | static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter) | |
1091 | { | |
1092 | struct net_device *netdev = adapter->netdev; | |
1093 | ||
1094 | adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1095 | if (!adapter->tx_ring) | |
1096 | return -ENOMEM; | |
1097 | ||
1098 | adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1099 | if (!adapter->rx_ring) { | |
1100 | kfree(adapter->tx_ring); | |
1101 | return -ENOMEM; | |
1102 | } | |
1103 | ||
1104 | netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64); | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | /** | |
1110 | * igbvf_request_irq - initialize interrupts | |
1111 | * | |
1112 | * Attempts to configure interrupts using the best available | |
1113 | * capabilities of the hardware and kernel. | |
1114 | **/ | |
1115 | static int igbvf_request_irq(struct igbvf_adapter *adapter) | |
1116 | { | |
1117 | int err = -1; | |
1118 | ||
1119 | /* igbvf supports msi-x only */ | |
1120 | if (adapter->msix_entries) | |
1121 | err = igbvf_request_msix(adapter); | |
1122 | ||
1123 | if (!err) | |
1124 | return err; | |
1125 | ||
1126 | dev_err(&adapter->pdev->dev, | |
1127 | "Unable to allocate interrupt, Error: %d\n", err); | |
1128 | ||
1129 | return err; | |
1130 | } | |
1131 | ||
1132 | static void igbvf_free_irq(struct igbvf_adapter *adapter) | |
1133 | { | |
1134 | struct net_device *netdev = adapter->netdev; | |
1135 | int vector; | |
1136 | ||
1137 | if (adapter->msix_entries) { | |
1138 | for (vector = 0; vector < 3; vector++) | |
1139 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | /** | |
1144 | * igbvf_irq_disable - Mask off interrupt generation on the NIC | |
1145 | **/ | |
1146 | static void igbvf_irq_disable(struct igbvf_adapter *adapter) | |
1147 | { | |
1148 | struct e1000_hw *hw = &adapter->hw; | |
1149 | ||
1150 | ew32(EIMC, ~0); | |
1151 | ||
1152 | if (adapter->msix_entries) | |
1153 | ew32(EIAC, 0); | |
1154 | } | |
1155 | ||
1156 | /** | |
1157 | * igbvf_irq_enable - Enable default interrupt generation settings | |
1158 | **/ | |
1159 | static void igbvf_irq_enable(struct igbvf_adapter *adapter) | |
1160 | { | |
1161 | struct e1000_hw *hw = &adapter->hw; | |
1162 | ||
1163 | ew32(EIAC, adapter->eims_enable_mask); | |
1164 | ew32(EIAM, adapter->eims_enable_mask); | |
1165 | ew32(EIMS, adapter->eims_enable_mask); | |
1166 | } | |
1167 | ||
1168 | /** | |
1169 | * igbvf_poll - NAPI Rx polling callback | |
1170 | * @napi: struct associated with this polling callback | |
1171 | * @budget: amount of packets driver is allowed to process this poll | |
1172 | **/ | |
1173 | static int igbvf_poll(struct napi_struct *napi, int budget) | |
1174 | { | |
1175 | struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi); | |
1176 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
1177 | struct e1000_hw *hw = &adapter->hw; | |
1178 | int work_done = 0; | |
1179 | ||
1180 | igbvf_clean_rx_irq(adapter, &work_done, budget); | |
1181 | ||
1182 | /* If not enough Rx work done, exit the polling mode */ | |
1183 | if (work_done < budget) { | |
1184 | napi_complete(napi); | |
1185 | ||
1186 | if (adapter->itr_setting & 3) | |
1187 | igbvf_set_itr(adapter); | |
1188 | ||
1189 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1190 | ew32(EIMS, adapter->rx_ring->eims_value); | |
1191 | } | |
1192 | ||
1193 | return work_done; | |
1194 | } | |
1195 | ||
1196 | /** | |
1197 | * igbvf_set_rlpml - set receive large packet maximum length | |
1198 | * @adapter: board private structure | |
1199 | * | |
1200 | * Configure the maximum size of packets that will be received | |
1201 | */ | |
1202 | static void igbvf_set_rlpml(struct igbvf_adapter *adapter) | |
1203 | { | |
1204 | int max_frame_size = adapter->max_frame_size; | |
1205 | struct e1000_hw *hw = &adapter->hw; | |
1206 | ||
1207 | if (adapter->vlgrp) | |
1208 | max_frame_size += VLAN_TAG_SIZE; | |
1209 | ||
1210 | e1000_rlpml_set_vf(hw, max_frame_size); | |
1211 | } | |
1212 | ||
1213 | static void igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1214 | { | |
1215 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1216 | struct e1000_hw *hw = &adapter->hw; | |
1217 | ||
1218 | if (hw->mac.ops.set_vfta(hw, vid, true)) | |
1219 | dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid); | |
1220 | } | |
1221 | ||
1222 | static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1223 | { | |
1224 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1225 | struct e1000_hw *hw = &adapter->hw; | |
1226 | ||
1227 | igbvf_irq_disable(adapter); | |
1228 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1229 | ||
1230 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1231 | igbvf_irq_enable(adapter); | |
1232 | ||
1233 | if (hw->mac.ops.set_vfta(hw, vid, false)) | |
1234 | dev_err(&adapter->pdev->dev, | |
1235 | "Failed to remove vlan id %d\n", vid); | |
1236 | } | |
1237 | ||
1238 | static void igbvf_vlan_rx_register(struct net_device *netdev, | |
1239 | struct vlan_group *grp) | |
1240 | { | |
1241 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1242 | ||
1243 | adapter->vlgrp = grp; | |
1244 | } | |
1245 | ||
1246 | static void igbvf_restore_vlan(struct igbvf_adapter *adapter) | |
1247 | { | |
1248 | u16 vid; | |
1249 | ||
1250 | if (!adapter->vlgrp) | |
1251 | return; | |
1252 | ||
1253 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1254 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1255 | continue; | |
1256 | igbvf_vlan_rx_add_vid(adapter->netdev, vid); | |
1257 | } | |
1258 | ||
1259 | igbvf_set_rlpml(adapter); | |
1260 | } | |
1261 | ||
1262 | /** | |
1263 | * igbvf_configure_tx - Configure Transmit Unit after Reset | |
1264 | * @adapter: board private structure | |
1265 | * | |
1266 | * Configure the Tx unit of the MAC after a reset. | |
1267 | **/ | |
1268 | static void igbvf_configure_tx(struct igbvf_adapter *adapter) | |
1269 | { | |
1270 | struct e1000_hw *hw = &adapter->hw; | |
1271 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1272 | u64 tdba; | |
1273 | u32 txdctl, dca_txctrl; | |
1274 | ||
1275 | /* disable transmits */ | |
1276 | txdctl = er32(TXDCTL(0)); | |
1277 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1278 | msleep(10); | |
1279 | ||
1280 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1281 | ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc)); | |
1282 | tdba = tx_ring->dma; | |
8e20ce94 | 1283 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1284 | ew32(TDBAH(0), (tdba >> 32)); |
1285 | ew32(TDH(0), 0); | |
1286 | ew32(TDT(0), 0); | |
1287 | tx_ring->head = E1000_TDH(0); | |
1288 | tx_ring->tail = E1000_TDT(0); | |
1289 | ||
1290 | /* Turn off Relaxed Ordering on head write-backs. The writebacks | |
1291 | * MUST be delivered in order or it will completely screw up | |
1292 | * our bookeeping. | |
1293 | */ | |
1294 | dca_txctrl = er32(DCA_TXCTRL(0)); | |
1295 | dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; | |
1296 | ew32(DCA_TXCTRL(0), dca_txctrl); | |
1297 | ||
1298 | /* enable transmits */ | |
1299 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
1300 | ew32(TXDCTL(0), txdctl); | |
1301 | ||
1302 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1303 | adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS; | |
1304 | ||
1305 | /* enable Report Status bit */ | |
1306 | adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS; | |
1307 | ||
1308 | adapter->tx_queue_len = adapter->netdev->tx_queue_len; | |
1309 | } | |
1310 | ||
1311 | /** | |
1312 | * igbvf_setup_srrctl - configure the receive control registers | |
1313 | * @adapter: Board private structure | |
1314 | **/ | |
1315 | static void igbvf_setup_srrctl(struct igbvf_adapter *adapter) | |
1316 | { | |
1317 | struct e1000_hw *hw = &adapter->hw; | |
1318 | u32 srrctl = 0; | |
1319 | ||
1320 | srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK | | |
1321 | E1000_SRRCTL_BSIZEHDR_MASK | | |
1322 | E1000_SRRCTL_BSIZEPKT_MASK); | |
1323 | ||
1324 | /* Enable queue drop to avoid head of line blocking */ | |
1325 | srrctl |= E1000_SRRCTL_DROP_EN; | |
1326 | ||
1327 | /* Setup buffer sizes */ | |
1328 | srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >> | |
1329 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1330 | ||
1331 | if (adapter->rx_buffer_len < 2048) { | |
1332 | adapter->rx_ps_hdr_size = 0; | |
1333 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1334 | } else { | |
1335 | adapter->rx_ps_hdr_size = 128; | |
1336 | srrctl |= adapter->rx_ps_hdr_size << | |
1337 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; | |
1338 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1339 | } | |
1340 | ||
1341 | ew32(SRRCTL(0), srrctl); | |
1342 | } | |
1343 | ||
1344 | /** | |
1345 | * igbvf_configure_rx - Configure Receive Unit after Reset | |
1346 | * @adapter: board private structure | |
1347 | * | |
1348 | * Configure the Rx unit of the MAC after a reset. | |
1349 | **/ | |
1350 | static void igbvf_configure_rx(struct igbvf_adapter *adapter) | |
1351 | { | |
1352 | struct e1000_hw *hw = &adapter->hw; | |
1353 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
1354 | u64 rdba; | |
1355 | u32 rdlen, rxdctl; | |
1356 | ||
1357 | /* disable receives */ | |
1358 | rxdctl = er32(RXDCTL(0)); | |
1359 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1360 | msleep(10); | |
1361 | ||
1362 | rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc); | |
1363 | ||
1364 | /* | |
1365 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
1366 | * the Base and Length of the Rx Descriptor Ring | |
1367 | */ | |
1368 | rdba = rx_ring->dma; | |
8e20ce94 | 1369 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1370 | ew32(RDBAH(0), (rdba >> 32)); |
1371 | ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc)); | |
1372 | rx_ring->head = E1000_RDH(0); | |
1373 | rx_ring->tail = E1000_RDT(0); | |
1374 | ew32(RDH(0), 0); | |
1375 | ew32(RDT(0), 0); | |
1376 | ||
1377 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
1378 | rxdctl &= 0xFFF00000; | |
1379 | rxdctl |= IGBVF_RX_PTHRESH; | |
1380 | rxdctl |= IGBVF_RX_HTHRESH << 8; | |
1381 | rxdctl |= IGBVF_RX_WTHRESH << 16; | |
1382 | ||
1383 | igbvf_set_rlpml(adapter); | |
1384 | ||
1385 | /* enable receives */ | |
1386 | ew32(RXDCTL(0), rxdctl); | |
1387 | } | |
1388 | ||
1389 | /** | |
1390 | * igbvf_set_multi - Multicast and Promiscuous mode set | |
1391 | * @netdev: network interface device structure | |
1392 | * | |
1393 | * The set_multi entry point is called whenever the multicast address | |
1394 | * list or the network interface flags are updated. This routine is | |
1395 | * responsible for configuring the hardware for proper multicast, | |
1396 | * promiscuous mode, and all-multi behavior. | |
1397 | **/ | |
1398 | static void igbvf_set_multi(struct net_device *netdev) | |
1399 | { | |
1400 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1401 | struct e1000_hw *hw = &adapter->hw; | |
1402 | struct dev_mc_list *mc_ptr; | |
1403 | u8 *mta_list = NULL; | |
1404 | int i; | |
1405 | ||
1406 | if (netdev->mc_count) { | |
1407 | mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC); | |
1408 | if (!mta_list) { | |
1409 | dev_err(&adapter->pdev->dev, | |
1410 | "failed to allocate multicast filter list\n"); | |
1411 | return; | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | /* prepare a packed array of only addresses. */ | |
1416 | mc_ptr = netdev->mc_list; | |
1417 | ||
1418 | for (i = 0; i < netdev->mc_count; i++) { | |
1419 | if (!mc_ptr) | |
1420 | break; | |
1421 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, | |
1422 | ETH_ALEN); | |
1423 | mc_ptr = mc_ptr->next; | |
1424 | } | |
1425 | ||
1426 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0); | |
1427 | kfree(mta_list); | |
1428 | } | |
1429 | ||
1430 | /** | |
1431 | * igbvf_configure - configure the hardware for Rx and Tx | |
1432 | * @adapter: private board structure | |
1433 | **/ | |
1434 | static void igbvf_configure(struct igbvf_adapter *adapter) | |
1435 | { | |
1436 | igbvf_set_multi(adapter->netdev); | |
1437 | ||
1438 | igbvf_restore_vlan(adapter); | |
1439 | ||
1440 | igbvf_configure_tx(adapter); | |
1441 | igbvf_setup_srrctl(adapter); | |
1442 | igbvf_configure_rx(adapter); | |
1443 | igbvf_alloc_rx_buffers(adapter->rx_ring, | |
1444 | igbvf_desc_unused(adapter->rx_ring)); | |
1445 | } | |
1446 | ||
1447 | /* igbvf_reset - bring the hardware into a known good state | |
1448 | * | |
1449 | * This function boots the hardware and enables some settings that | |
1450 | * require a configuration cycle of the hardware - those cannot be | |
1451 | * set/changed during runtime. After reset the device needs to be | |
1452 | * properly configured for Rx, Tx etc. | |
1453 | */ | |
2d165771 | 1454 | static void igbvf_reset(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1455 | { |
1456 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1457 | struct net_device *netdev = adapter->netdev; | |
1458 | struct e1000_hw *hw = &adapter->hw; | |
1459 | ||
1460 | /* Allow time for pending master requests to run */ | |
1461 | if (mac->ops.reset_hw(hw)) | |
1462 | dev_err(&adapter->pdev->dev, "PF still resetting\n"); | |
1463 | ||
1464 | mac->ops.init_hw(hw); | |
1465 | ||
1466 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1467 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1468 | netdev->addr_len); | |
1469 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1470 | netdev->addr_len); | |
1471 | } | |
72279093 AD |
1472 | |
1473 | adapter->last_reset = jiffies; | |
d4e0fe01 AD |
1474 | } |
1475 | ||
1476 | int igbvf_up(struct igbvf_adapter *adapter) | |
1477 | { | |
1478 | struct e1000_hw *hw = &adapter->hw; | |
1479 | ||
1480 | /* hardware has been reset, we need to reload some things */ | |
1481 | igbvf_configure(adapter); | |
1482 | ||
1483 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1484 | ||
1485 | napi_enable(&adapter->rx_ring->napi); | |
1486 | if (adapter->msix_entries) | |
1487 | igbvf_configure_msix(adapter); | |
1488 | ||
1489 | /* Clear any pending interrupts. */ | |
1490 | er32(EICR); | |
1491 | igbvf_irq_enable(adapter); | |
1492 | ||
1493 | /* start the watchdog */ | |
1494 | hw->mac.get_link_status = 1; | |
1495 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1496 | ||
1497 | ||
1498 | return 0; | |
1499 | } | |
1500 | ||
1501 | void igbvf_down(struct igbvf_adapter *adapter) | |
1502 | { | |
1503 | struct net_device *netdev = adapter->netdev; | |
1504 | struct e1000_hw *hw = &adapter->hw; | |
1505 | u32 rxdctl, txdctl; | |
1506 | ||
1507 | /* | |
1508 | * signal that we're down so the interrupt handler does not | |
1509 | * reschedule our watchdog timer | |
1510 | */ | |
1511 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1512 | ||
1513 | /* disable receives in the hardware */ | |
1514 | rxdctl = er32(RXDCTL(0)); | |
1515 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1516 | ||
1517 | netif_stop_queue(netdev); | |
1518 | ||
1519 | /* disable transmits in the hardware */ | |
1520 | txdctl = er32(TXDCTL(0)); | |
1521 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1522 | ||
1523 | /* flush both disables and wait for them to finish */ | |
1524 | e1e_flush(); | |
1525 | msleep(10); | |
1526 | ||
1527 | napi_disable(&adapter->rx_ring->napi); | |
1528 | ||
1529 | igbvf_irq_disable(adapter); | |
1530 | ||
1531 | del_timer_sync(&adapter->watchdog_timer); | |
1532 | ||
1533 | netdev->tx_queue_len = adapter->tx_queue_len; | |
1534 | netif_carrier_off(netdev); | |
1535 | ||
1536 | /* record the stats before reset*/ | |
1537 | igbvf_update_stats(adapter); | |
1538 | ||
1539 | adapter->link_speed = 0; | |
1540 | adapter->link_duplex = 0; | |
1541 | ||
1542 | igbvf_reset(adapter); | |
1543 | igbvf_clean_tx_ring(adapter->tx_ring); | |
1544 | igbvf_clean_rx_ring(adapter->rx_ring); | |
1545 | } | |
1546 | ||
1547 | void igbvf_reinit_locked(struct igbvf_adapter *adapter) | |
1548 | { | |
1549 | might_sleep(); | |
1550 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
1551 | msleep(1); | |
1552 | igbvf_down(adapter); | |
1553 | igbvf_up(adapter); | |
1554 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
1555 | } | |
1556 | ||
1557 | /** | |
1558 | * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter) | |
1559 | * @adapter: board private structure to initialize | |
1560 | * | |
1561 | * igbvf_sw_init initializes the Adapter private data structure. | |
1562 | * Fields are initialized based on PCI device information and | |
1563 | * OS network device settings (MTU size). | |
1564 | **/ | |
1565 | static int __devinit igbvf_sw_init(struct igbvf_adapter *adapter) | |
1566 | { | |
1567 | struct net_device *netdev = adapter->netdev; | |
1568 | s32 rc; | |
1569 | ||
1570 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
1571 | adapter->rx_ps_hdr_size = 0; | |
1572 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1573 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1574 | ||
1575 | adapter->tx_int_delay = 8; | |
1576 | adapter->tx_abs_int_delay = 32; | |
1577 | adapter->rx_int_delay = 0; | |
1578 | adapter->rx_abs_int_delay = 8; | |
1579 | adapter->itr_setting = 3; | |
1580 | adapter->itr = 20000; | |
1581 | ||
1582 | /* Set various function pointers */ | |
1583 | adapter->ei->init_ops(&adapter->hw); | |
1584 | ||
1585 | rc = adapter->hw.mac.ops.init_params(&adapter->hw); | |
1586 | if (rc) | |
1587 | return rc; | |
1588 | ||
1589 | rc = adapter->hw.mbx.ops.init_params(&adapter->hw); | |
1590 | if (rc) | |
1591 | return rc; | |
1592 | ||
1593 | igbvf_set_interrupt_capability(adapter); | |
1594 | ||
1595 | if (igbvf_alloc_queues(adapter)) | |
1596 | return -ENOMEM; | |
1597 | ||
1598 | spin_lock_init(&adapter->tx_queue_lock); | |
1599 | ||
1600 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1601 | igbvf_irq_disable(adapter); | |
1602 | ||
1603 | spin_lock_init(&adapter->stats_lock); | |
1604 | ||
1605 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter) | |
1610 | { | |
1611 | struct e1000_hw *hw = &adapter->hw; | |
1612 | ||
1613 | adapter->stats.last_gprc = er32(VFGPRC); | |
1614 | adapter->stats.last_gorc = er32(VFGORC); | |
1615 | adapter->stats.last_gptc = er32(VFGPTC); | |
1616 | adapter->stats.last_gotc = er32(VFGOTC); | |
1617 | adapter->stats.last_mprc = er32(VFMPRC); | |
1618 | adapter->stats.last_gotlbc = er32(VFGOTLBC); | |
1619 | adapter->stats.last_gptlbc = er32(VFGPTLBC); | |
1620 | adapter->stats.last_gorlbc = er32(VFGORLBC); | |
1621 | adapter->stats.last_gprlbc = er32(VFGPRLBC); | |
1622 | ||
1623 | adapter->stats.base_gprc = er32(VFGPRC); | |
1624 | adapter->stats.base_gorc = er32(VFGORC); | |
1625 | adapter->stats.base_gptc = er32(VFGPTC); | |
1626 | adapter->stats.base_gotc = er32(VFGOTC); | |
1627 | adapter->stats.base_mprc = er32(VFMPRC); | |
1628 | adapter->stats.base_gotlbc = er32(VFGOTLBC); | |
1629 | adapter->stats.base_gptlbc = er32(VFGPTLBC); | |
1630 | adapter->stats.base_gorlbc = er32(VFGORLBC); | |
1631 | adapter->stats.base_gprlbc = er32(VFGPRLBC); | |
1632 | } | |
1633 | ||
1634 | /** | |
1635 | * igbvf_open - Called when a network interface is made active | |
1636 | * @netdev: network interface device structure | |
1637 | * | |
1638 | * Returns 0 on success, negative value on failure | |
1639 | * | |
1640 | * The open entry point is called when a network interface is made | |
1641 | * active by the system (IFF_UP). At this point all resources needed | |
1642 | * for transmit and receive operations are allocated, the interrupt | |
1643 | * handler is registered with the OS, the watchdog timer is started, | |
1644 | * and the stack is notified that the interface is ready. | |
1645 | **/ | |
1646 | static int igbvf_open(struct net_device *netdev) | |
1647 | { | |
1648 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1649 | struct e1000_hw *hw = &adapter->hw; | |
1650 | int err; | |
1651 | ||
1652 | /* disallow open during test */ | |
1653 | if (test_bit(__IGBVF_TESTING, &adapter->state)) | |
1654 | return -EBUSY; | |
1655 | ||
1656 | /* allocate transmit descriptors */ | |
1657 | err = igbvf_setup_tx_resources(adapter, adapter->tx_ring); | |
1658 | if (err) | |
1659 | goto err_setup_tx; | |
1660 | ||
1661 | /* allocate receive descriptors */ | |
1662 | err = igbvf_setup_rx_resources(adapter, adapter->rx_ring); | |
1663 | if (err) | |
1664 | goto err_setup_rx; | |
1665 | ||
1666 | /* | |
1667 | * before we allocate an interrupt, we must be ready to handle it. | |
1668 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1669 | * as soon as we call pci_request_irq, so we have to setup our | |
1670 | * clean_rx handler before we do so. | |
1671 | */ | |
1672 | igbvf_configure(adapter); | |
1673 | ||
1674 | err = igbvf_request_irq(adapter); | |
1675 | if (err) | |
1676 | goto err_req_irq; | |
1677 | ||
1678 | /* From here on the code is the same as igbvf_up() */ | |
1679 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1680 | ||
1681 | napi_enable(&adapter->rx_ring->napi); | |
1682 | ||
1683 | /* clear any pending interrupts */ | |
1684 | er32(EICR); | |
1685 | ||
1686 | igbvf_irq_enable(adapter); | |
1687 | ||
1688 | /* start the watchdog */ | |
1689 | hw->mac.get_link_status = 1; | |
1690 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1691 | ||
1692 | return 0; | |
1693 | ||
1694 | err_req_irq: | |
1695 | igbvf_free_rx_resources(adapter->rx_ring); | |
1696 | err_setup_rx: | |
1697 | igbvf_free_tx_resources(adapter->tx_ring); | |
1698 | err_setup_tx: | |
1699 | igbvf_reset(adapter); | |
1700 | ||
1701 | return err; | |
1702 | } | |
1703 | ||
1704 | /** | |
1705 | * igbvf_close - Disables a network interface | |
1706 | * @netdev: network interface device structure | |
1707 | * | |
1708 | * Returns 0, this is not allowed to fail | |
1709 | * | |
1710 | * The close entry point is called when an interface is de-activated | |
1711 | * by the OS. The hardware is still under the drivers control, but | |
1712 | * needs to be disabled. A global MAC reset is issued to stop the | |
1713 | * hardware, and all transmit and receive resources are freed. | |
1714 | **/ | |
1715 | static int igbvf_close(struct net_device *netdev) | |
1716 | { | |
1717 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1718 | ||
1719 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
1720 | igbvf_down(adapter); | |
1721 | ||
1722 | igbvf_free_irq(adapter); | |
1723 | ||
1724 | igbvf_free_tx_resources(adapter->tx_ring); | |
1725 | igbvf_free_rx_resources(adapter->rx_ring); | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | /** | |
1730 | * igbvf_set_mac - Change the Ethernet Address of the NIC | |
1731 | * @netdev: network interface device structure | |
1732 | * @p: pointer to an address structure | |
1733 | * | |
1734 | * Returns 0 on success, negative on failure | |
1735 | **/ | |
1736 | static int igbvf_set_mac(struct net_device *netdev, void *p) | |
1737 | { | |
1738 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1739 | struct e1000_hw *hw = &adapter->hw; | |
1740 | struct sockaddr *addr = p; | |
1741 | ||
1742 | if (!is_valid_ether_addr(addr->sa_data)) | |
1743 | return -EADDRNOTAVAIL; | |
1744 | ||
1745 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
1746 | ||
1747 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); | |
1748 | ||
1749 | if (memcmp(addr->sa_data, hw->mac.addr, 6)) | |
1750 | return -EADDRNOTAVAIL; | |
1751 | ||
1752 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1753 | ||
1754 | return 0; | |
1755 | } | |
1756 | ||
1757 | #define UPDATE_VF_COUNTER(reg, name) \ | |
1758 | { \ | |
1759 | u32 current_counter = er32(reg); \ | |
1760 | if (current_counter < adapter->stats.last_##name) \ | |
1761 | adapter->stats.name += 0x100000000LL; \ | |
1762 | adapter->stats.last_##name = current_counter; \ | |
1763 | adapter->stats.name &= 0xFFFFFFFF00000000LL; \ | |
1764 | adapter->stats.name |= current_counter; \ | |
1765 | } | |
1766 | ||
1767 | /** | |
1768 | * igbvf_update_stats - Update the board statistics counters | |
1769 | * @adapter: board private structure | |
1770 | **/ | |
1771 | void igbvf_update_stats(struct igbvf_adapter *adapter) | |
1772 | { | |
1773 | struct e1000_hw *hw = &adapter->hw; | |
1774 | struct pci_dev *pdev = adapter->pdev; | |
1775 | ||
1776 | /* | |
1777 | * Prevent stats update while adapter is being reset, link is down | |
1778 | * or if the pci connection is down. | |
1779 | */ | |
1780 | if (adapter->link_speed == 0) | |
1781 | return; | |
1782 | ||
1783 | if (test_bit(__IGBVF_RESETTING, &adapter->state)) | |
1784 | return; | |
1785 | ||
1786 | if (pci_channel_offline(pdev)) | |
1787 | return; | |
1788 | ||
1789 | UPDATE_VF_COUNTER(VFGPRC, gprc); | |
1790 | UPDATE_VF_COUNTER(VFGORC, gorc); | |
1791 | UPDATE_VF_COUNTER(VFGPTC, gptc); | |
1792 | UPDATE_VF_COUNTER(VFGOTC, gotc); | |
1793 | UPDATE_VF_COUNTER(VFMPRC, mprc); | |
1794 | UPDATE_VF_COUNTER(VFGOTLBC, gotlbc); | |
1795 | UPDATE_VF_COUNTER(VFGPTLBC, gptlbc); | |
1796 | UPDATE_VF_COUNTER(VFGORLBC, gorlbc); | |
1797 | UPDATE_VF_COUNTER(VFGPRLBC, gprlbc); | |
1798 | ||
1799 | /* Fill out the OS statistics structure */ | |
1800 | adapter->net_stats.multicast = adapter->stats.mprc; | |
1801 | } | |
1802 | ||
1803 | static void igbvf_print_link_info(struct igbvf_adapter *adapter) | |
1804 | { | |
1805 | dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s\n", | |
1806 | adapter->link_speed, | |
1807 | ((adapter->link_duplex == FULL_DUPLEX) ? | |
1808 | "Full Duplex" : "Half Duplex")); | |
1809 | } | |
1810 | ||
1811 | static bool igbvf_has_link(struct igbvf_adapter *adapter) | |
1812 | { | |
1813 | struct e1000_hw *hw = &adapter->hw; | |
1814 | s32 ret_val = E1000_SUCCESS; | |
1815 | bool link_active; | |
1816 | ||
72279093 AD |
1817 | /* If interface is down, stay link down */ |
1818 | if (test_bit(__IGBVF_DOWN, &adapter->state)) | |
1819 | return false; | |
1820 | ||
d4e0fe01 AD |
1821 | ret_val = hw->mac.ops.check_for_link(hw); |
1822 | link_active = !hw->mac.get_link_status; | |
1823 | ||
1824 | /* if check for link returns error we will need to reset */ | |
72279093 | 1825 | if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ))) |
d4e0fe01 AD |
1826 | schedule_work(&adapter->reset_task); |
1827 | ||
1828 | return link_active; | |
1829 | } | |
1830 | ||
1831 | /** | |
1832 | * igbvf_watchdog - Timer Call-back | |
1833 | * @data: pointer to adapter cast into an unsigned long | |
1834 | **/ | |
1835 | static void igbvf_watchdog(unsigned long data) | |
1836 | { | |
1837 | struct igbvf_adapter *adapter = (struct igbvf_adapter *) data; | |
1838 | ||
1839 | /* Do the rest outside of interrupt context */ | |
1840 | schedule_work(&adapter->watchdog_task); | |
1841 | } | |
1842 | ||
1843 | static void igbvf_watchdog_task(struct work_struct *work) | |
1844 | { | |
1845 | struct igbvf_adapter *adapter = container_of(work, | |
1846 | struct igbvf_adapter, | |
1847 | watchdog_task); | |
1848 | struct net_device *netdev = adapter->netdev; | |
1849 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1850 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1851 | struct e1000_hw *hw = &adapter->hw; | |
1852 | u32 link; | |
1853 | int tx_pending = 0; | |
1854 | ||
1855 | link = igbvf_has_link(adapter); | |
1856 | ||
1857 | if (link) { | |
1858 | if (!netif_carrier_ok(netdev)) { | |
1859 | bool txb2b = 1; | |
1860 | ||
1861 | mac->ops.get_link_up_info(&adapter->hw, | |
1862 | &adapter->link_speed, | |
1863 | &adapter->link_duplex); | |
1864 | igbvf_print_link_info(adapter); | |
1865 | ||
1866 | /* | |
1867 | * tweak tx_queue_len according to speed/duplex | |
1868 | * and adjust the timeout factor | |
1869 | */ | |
1870 | netdev->tx_queue_len = adapter->tx_queue_len; | |
1871 | adapter->tx_timeout_factor = 1; | |
1872 | switch (adapter->link_speed) { | |
1873 | case SPEED_10: | |
1874 | txb2b = 0; | |
1875 | netdev->tx_queue_len = 10; | |
1876 | adapter->tx_timeout_factor = 16; | |
1877 | break; | |
1878 | case SPEED_100: | |
1879 | txb2b = 0; | |
1880 | netdev->tx_queue_len = 100; | |
1881 | /* maybe add some timeout factor ? */ | |
1882 | break; | |
1883 | } | |
1884 | ||
1885 | netif_carrier_on(netdev); | |
1886 | netif_wake_queue(netdev); | |
1887 | } | |
1888 | } else { | |
1889 | if (netif_carrier_ok(netdev)) { | |
1890 | adapter->link_speed = 0; | |
1891 | adapter->link_duplex = 0; | |
1892 | dev_info(&adapter->pdev->dev, "Link is Down\n"); | |
1893 | netif_carrier_off(netdev); | |
1894 | netif_stop_queue(netdev); | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | if (netif_carrier_ok(netdev)) { | |
1899 | igbvf_update_stats(adapter); | |
1900 | } else { | |
1901 | tx_pending = (igbvf_desc_unused(tx_ring) + 1 < | |
1902 | tx_ring->count); | |
1903 | if (tx_pending) { | |
1904 | /* | |
1905 | * We've lost link, so the controller stops DMA, | |
1906 | * but we've got queued Tx work that's never going | |
1907 | * to get done, so reset controller to flush Tx. | |
1908 | * (Do the reset outside of interrupt context). | |
1909 | */ | |
1910 | adapter->tx_timeout_count++; | |
1911 | schedule_work(&adapter->reset_task); | |
1912 | } | |
1913 | } | |
1914 | ||
1915 | /* Cause software interrupt to ensure Rx ring is cleaned */ | |
1916 | ew32(EICS, adapter->rx_ring->eims_value); | |
1917 | ||
1918 | /* Force detection of hung controller every watchdog period */ | |
1919 | adapter->detect_tx_hung = 1; | |
1920 | ||
1921 | /* Reset the timer */ | |
1922 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1923 | mod_timer(&adapter->watchdog_timer, | |
1924 | round_jiffies(jiffies + (2 * HZ))); | |
1925 | } | |
1926 | ||
1927 | #define IGBVF_TX_FLAGS_CSUM 0x00000001 | |
1928 | #define IGBVF_TX_FLAGS_VLAN 0x00000002 | |
1929 | #define IGBVF_TX_FLAGS_TSO 0x00000004 | |
1930 | #define IGBVF_TX_FLAGS_IPV4 0x00000008 | |
1931 | #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1932 | #define IGBVF_TX_FLAGS_VLAN_SHIFT 16 | |
1933 | ||
1934 | static int igbvf_tso(struct igbvf_adapter *adapter, | |
1935 | struct igbvf_ring *tx_ring, | |
1936 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
1937 | { | |
1938 | struct e1000_adv_tx_context_desc *context_desc; | |
1939 | unsigned int i; | |
1940 | int err; | |
1941 | struct igbvf_buffer *buffer_info; | |
1942 | u32 info = 0, tu_cmd = 0; | |
1943 | u32 mss_l4len_idx, l4len; | |
1944 | *hdr_len = 0; | |
1945 | ||
1946 | if (skb_header_cloned(skb)) { | |
1947 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1948 | if (err) { | |
1949 | dev_err(&adapter->pdev->dev, | |
1950 | "igbvf_tso returning an error\n"); | |
1951 | return err; | |
1952 | } | |
1953 | } | |
1954 | ||
1955 | l4len = tcp_hdrlen(skb); | |
1956 | *hdr_len += l4len; | |
1957 | ||
1958 | if (skb->protocol == htons(ETH_P_IP)) { | |
1959 | struct iphdr *iph = ip_hdr(skb); | |
1960 | iph->tot_len = 0; | |
1961 | iph->check = 0; | |
1962 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1963 | iph->daddr, 0, | |
1964 | IPPROTO_TCP, | |
1965 | 0); | |
8e1e8a47 | 1966 | } else if (skb_is_gso_v6(skb)) { |
d4e0fe01 AD |
1967 | ipv6_hdr(skb)->payload_len = 0; |
1968 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
1969 | &ipv6_hdr(skb)->daddr, | |
1970 | 0, IPPROTO_TCP, 0); | |
1971 | } | |
1972 | ||
1973 | i = tx_ring->next_to_use; | |
1974 | ||
1975 | buffer_info = &tx_ring->buffer_info[i]; | |
1976 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1977 | /* VLAN MACLEN IPLEN */ | |
1978 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1979 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1980 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1981 | *hdr_len += skb_network_offset(skb); | |
1982 | info |= (skb_transport_header(skb) - skb_network_header(skb)); | |
1983 | *hdr_len += (skb_transport_header(skb) - skb_network_header(skb)); | |
1984 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1985 | ||
1986 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
1987 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1988 | ||
1989 | if (skb->protocol == htons(ETH_P_IP)) | |
1990 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1991 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1992 | ||
1993 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
1994 | ||
1995 | /* MSS L4LEN IDX */ | |
1996 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
1997 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
1998 | ||
1999 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2000 | context_desc->seqnum_seed = 0; | |
2001 | ||
2002 | buffer_info->time_stamp = jiffies; | |
2003 | buffer_info->next_to_watch = i; | |
2004 | buffer_info->dma = 0; | |
2005 | i++; | |
2006 | if (i == tx_ring->count) | |
2007 | i = 0; | |
2008 | ||
2009 | tx_ring->next_to_use = i; | |
2010 | ||
2011 | return true; | |
2012 | } | |
2013 | ||
2014 | static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter, | |
2015 | struct igbvf_ring *tx_ring, | |
2016 | struct sk_buff *skb, u32 tx_flags) | |
2017 | { | |
2018 | struct e1000_adv_tx_context_desc *context_desc; | |
2019 | unsigned int i; | |
2020 | struct igbvf_buffer *buffer_info; | |
2021 | u32 info = 0, tu_cmd = 0; | |
2022 | ||
2023 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
2024 | (tx_flags & IGBVF_TX_FLAGS_VLAN)) { | |
2025 | i = tx_ring->next_to_use; | |
2026 | buffer_info = &tx_ring->buffer_info[i]; | |
2027 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
2028 | ||
2029 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2030 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
2031 | ||
2032 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
2033 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2034 | info |= (skb_transport_header(skb) - | |
2035 | skb_network_header(skb)); | |
2036 | ||
2037 | ||
2038 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
2039 | ||
2040 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
2041 | ||
2042 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2043 | switch (skb->protocol) { | |
2044 | case __constant_htons(ETH_P_IP): | |
2045 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
2046 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
2047 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2048 | break; | |
2049 | case __constant_htons(ETH_P_IPV6): | |
2050 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2051 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2052 | break; | |
2053 | default: | |
2054 | break; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2059 | context_desc->seqnum_seed = 0; | |
2060 | context_desc->mss_l4len_idx = 0; | |
2061 | ||
2062 | buffer_info->time_stamp = jiffies; | |
2063 | buffer_info->next_to_watch = i; | |
2064 | buffer_info->dma = 0; | |
2065 | i++; | |
2066 | if (i == tx_ring->count) | |
2067 | i = 0; | |
2068 | tx_ring->next_to_use = i; | |
2069 | ||
2070 | return true; | |
2071 | } | |
2072 | ||
2073 | return false; | |
2074 | } | |
2075 | ||
2076 | static int igbvf_maybe_stop_tx(struct net_device *netdev, int size) | |
2077 | { | |
2078 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2079 | ||
2080 | /* there is enough descriptors then we don't need to worry */ | |
2081 | if (igbvf_desc_unused(adapter->tx_ring) >= size) | |
2082 | return 0; | |
2083 | ||
2084 | netif_stop_queue(netdev); | |
2085 | ||
2086 | smp_mb(); | |
2087 | ||
2088 | /* We need to check again just in case room has been made available */ | |
2089 | if (igbvf_desc_unused(adapter->tx_ring) < size) | |
2090 | return -EBUSY; | |
2091 | ||
2092 | netif_wake_queue(netdev); | |
2093 | ||
2094 | ++adapter->restart_queue; | |
2095 | return 0; | |
2096 | } | |
2097 | ||
2098 | #define IGBVF_MAX_TXD_PWR 16 | |
2099 | #define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR) | |
2100 | ||
2101 | static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, | |
2102 | struct igbvf_ring *tx_ring, | |
2103 | struct sk_buff *skb, | |
2104 | unsigned int first) | |
2105 | { | |
2106 | struct igbvf_buffer *buffer_info; | |
a7d5ca40 | 2107 | struct pci_dev *pdev = adapter->pdev; |
d4e0fe01 AD |
2108 | unsigned int len = skb_headlen(skb); |
2109 | unsigned int count = 0, i; | |
2110 | unsigned int f; | |
d4e0fe01 AD |
2111 | |
2112 | i = tx_ring->next_to_use; | |
2113 | ||
d4e0fe01 AD |
2114 | buffer_info = &tx_ring->buffer_info[i]; |
2115 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2116 | buffer_info->length = len; | |
2117 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2118 | buffer_info->time_stamp = jiffies; | |
2119 | buffer_info->next_to_watch = i; | |
ac26d7d6 | 2120 | buffer_info->mapped_as_page = false; |
a7d5ca40 AD |
2121 | buffer_info->dma = pci_map_single(pdev, skb->data, len, |
2122 | PCI_DMA_TODEVICE); | |
2123 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) | |
2124 | goto dma_error; | |
2125 | ||
d4e0fe01 AD |
2126 | |
2127 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
2128 | struct skb_frag_struct *frag; | |
2129 | ||
8581145f | 2130 | count++; |
d4e0fe01 AD |
2131 | i++; |
2132 | if (i == tx_ring->count) | |
2133 | i = 0; | |
2134 | ||
2135 | frag = &skb_shinfo(skb)->frags[f]; | |
2136 | len = frag->size; | |
2137 | ||
2138 | buffer_info = &tx_ring->buffer_info[i]; | |
2139 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2140 | buffer_info->length = len; | |
2141 | buffer_info->time_stamp = jiffies; | |
2142 | buffer_info->next_to_watch = i; | |
a7d5ca40 AD |
2143 | buffer_info->mapped_as_page = true; |
2144 | buffer_info->dma = pci_map_page(pdev, | |
2145 | frag->page, | |
2146 | frag->page_offset, | |
2147 | len, | |
2148 | PCI_DMA_TODEVICE); | |
2149 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) | |
2150 | goto dma_error; | |
d4e0fe01 AD |
2151 | } |
2152 | ||
2153 | tx_ring->buffer_info[i].skb = skb; | |
2154 | tx_ring->buffer_info[first].next_to_watch = i; | |
2155 | ||
a7d5ca40 AD |
2156 | return ++count; |
2157 | ||
2158 | dma_error: | |
2159 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2160 | ||
2161 | /* clear timestamp and dma mappings for failed buffer_info mapping */ | |
2162 | buffer_info->dma = 0; | |
2163 | buffer_info->time_stamp = 0; | |
2164 | buffer_info->length = 0; | |
2165 | buffer_info->next_to_watch = 0; | |
2166 | buffer_info->mapped_as_page = false; | |
c1fa347f RK |
2167 | if (count) |
2168 | count--; | |
a7d5ca40 AD |
2169 | |
2170 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
c1fa347f RK |
2171 | while (count--) { |
2172 | if (i==0) | |
a7d5ca40 | 2173 | i += tx_ring->count; |
c1fa347f | 2174 | i--; |
a7d5ca40 AD |
2175 | buffer_info = &tx_ring->buffer_info[i]; |
2176 | igbvf_put_txbuf(adapter, buffer_info); | |
2177 | } | |
2178 | ||
2179 | return 0; | |
d4e0fe01 AD |
2180 | } |
2181 | ||
2182 | static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, | |
2183 | struct igbvf_ring *tx_ring, | |
2184 | int tx_flags, int count, u32 paylen, | |
2185 | u8 hdr_len) | |
2186 | { | |
2187 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2188 | struct igbvf_buffer *buffer_info; | |
2189 | u32 olinfo_status = 0, cmd_type_len; | |
2190 | unsigned int i; | |
2191 | ||
2192 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
2193 | E1000_ADVTXD_DCMD_DEXT); | |
2194 | ||
2195 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2196 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2197 | ||
2198 | if (tx_flags & IGBVF_TX_FLAGS_TSO) { | |
2199 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2200 | ||
2201 | /* insert tcp checksum */ | |
2202 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2203 | ||
2204 | /* insert ip checksum */ | |
2205 | if (tx_flags & IGBVF_TX_FLAGS_IPV4) | |
2206 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2207 | ||
2208 | } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) { | |
2209 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2210 | } | |
2211 | ||
2212 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2213 | ||
2214 | i = tx_ring->next_to_use; | |
2215 | while (count--) { | |
2216 | buffer_info = &tx_ring->buffer_info[i]; | |
2217 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
2218 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2219 | tx_desc->read.cmd_type_len = | |
2220 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
2221 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2222 | i++; | |
2223 | if (i == tx_ring->count) | |
2224 | i = 0; | |
2225 | } | |
2226 | ||
2227 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2228 | /* Force memory writes to complete before letting h/w | |
2229 | * know there are new descriptors to fetch. (Only | |
2230 | * applicable for weak-ordered memory model archs, | |
2231 | * such as IA-64). */ | |
2232 | wmb(); | |
2233 | ||
2234 | tx_ring->next_to_use = i; | |
2235 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2236 | /* we need this if more than one processor can write to our tail | |
2237 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2238 | mmiowb(); | |
2239 | } | |
2240 | ||
3b29a56d SH |
2241 | static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb, |
2242 | struct net_device *netdev, | |
2243 | struct igbvf_ring *tx_ring) | |
d4e0fe01 AD |
2244 | { |
2245 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2246 | unsigned int first, tx_flags = 0; | |
2247 | u8 hdr_len = 0; | |
2248 | int count = 0; | |
2249 | int tso = 0; | |
2250 | ||
2251 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2252 | dev_kfree_skb_any(skb); | |
2253 | return NETDEV_TX_OK; | |
2254 | } | |
2255 | ||
2256 | if (skb->len <= 0) { | |
2257 | dev_kfree_skb_any(skb); | |
2258 | return NETDEV_TX_OK; | |
2259 | } | |
2260 | ||
2261 | /* | |
2262 | * need: count + 4 desc gap to keep tail from touching | |
2263 | * + 2 desc gap to keep tail from touching head, | |
2264 | * + 1 desc for skb->data, | |
2265 | * + 1 desc for context descriptor, | |
2266 | * head, otherwise try next time | |
2267 | */ | |
2268 | if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) { | |
2269 | /* this is a hard error */ | |
2270 | return NETDEV_TX_BUSY; | |
2271 | } | |
2272 | ||
2273 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
2274 | tx_flags |= IGBVF_TX_FLAGS_VLAN; | |
2275 | tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT); | |
2276 | } | |
2277 | ||
2278 | if (skb->protocol == htons(ETH_P_IP)) | |
2279 | tx_flags |= IGBVF_TX_FLAGS_IPV4; | |
2280 | ||
2281 | first = tx_ring->next_to_use; | |
2282 | ||
2283 | tso = skb_is_gso(skb) ? | |
2284 | igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0; | |
2285 | if (unlikely(tso < 0)) { | |
2286 | dev_kfree_skb_any(skb); | |
2287 | return NETDEV_TX_OK; | |
2288 | } | |
2289 | ||
2290 | if (tso) | |
2291 | tx_flags |= IGBVF_TX_FLAGS_TSO; | |
2292 | else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2293 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2294 | tx_flags |= IGBVF_TX_FLAGS_CSUM; | |
2295 | ||
2296 | /* | |
2297 | * count reflects descriptors mapped, if 0 then mapping error | |
2298 | * has occured and we need to rewind the descriptor queue | |
2299 | */ | |
2300 | count = igbvf_tx_map_adv(adapter, tx_ring, skb, first); | |
2301 | ||
2302 | if (count) { | |
2303 | igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count, | |
2304 | skb->len, hdr_len); | |
d4e0fe01 AD |
2305 | /* Make sure there is space in the ring for the next send. */ |
2306 | igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4); | |
2307 | } else { | |
2308 | dev_kfree_skb_any(skb); | |
2309 | tx_ring->buffer_info[first].time_stamp = 0; | |
2310 | tx_ring->next_to_use = first; | |
2311 | } | |
2312 | ||
2313 | return NETDEV_TX_OK; | |
2314 | } | |
2315 | ||
3b29a56d SH |
2316 | static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb, |
2317 | struct net_device *netdev) | |
d4e0fe01 AD |
2318 | { |
2319 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2320 | struct igbvf_ring *tx_ring; | |
d4e0fe01 AD |
2321 | |
2322 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2323 | dev_kfree_skb_any(skb); | |
2324 | return NETDEV_TX_OK; | |
2325 | } | |
2326 | ||
2327 | tx_ring = &adapter->tx_ring[0]; | |
2328 | ||
3b29a56d | 2329 | return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring); |
d4e0fe01 AD |
2330 | } |
2331 | ||
2332 | /** | |
2333 | * igbvf_tx_timeout - Respond to a Tx Hang | |
2334 | * @netdev: network interface device structure | |
2335 | **/ | |
2336 | static void igbvf_tx_timeout(struct net_device *netdev) | |
2337 | { | |
2338 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2339 | ||
2340 | /* Do the reset outside of interrupt context */ | |
2341 | adapter->tx_timeout_count++; | |
2342 | schedule_work(&adapter->reset_task); | |
2343 | } | |
2344 | ||
2345 | static void igbvf_reset_task(struct work_struct *work) | |
2346 | { | |
2347 | struct igbvf_adapter *adapter; | |
2348 | adapter = container_of(work, struct igbvf_adapter, reset_task); | |
2349 | ||
2350 | igbvf_reinit_locked(adapter); | |
2351 | } | |
2352 | ||
2353 | /** | |
2354 | * igbvf_get_stats - Get System Network Statistics | |
2355 | * @netdev: network interface device structure | |
2356 | * | |
2357 | * Returns the address of the device statistics structure. | |
2358 | * The statistics are actually updated from the timer callback. | |
2359 | **/ | |
2360 | static struct net_device_stats *igbvf_get_stats(struct net_device *netdev) | |
2361 | { | |
2362 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2363 | ||
2364 | /* only return the current stats */ | |
2365 | return &adapter->net_stats; | |
2366 | } | |
2367 | ||
2368 | /** | |
2369 | * igbvf_change_mtu - Change the Maximum Transfer Unit | |
2370 | * @netdev: network interface device structure | |
2371 | * @new_mtu: new value for maximum frame size | |
2372 | * | |
2373 | * Returns 0 on success, negative on failure | |
2374 | **/ | |
2375 | static int igbvf_change_mtu(struct net_device *netdev, int new_mtu) | |
2376 | { | |
2377 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2378 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2379 | ||
2380 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2381 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
2382 | return -EINVAL; | |
2383 | } | |
2384 | ||
d4e0fe01 AD |
2385 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
2386 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
2387 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
2388 | return -EINVAL; | |
2389 | } | |
2390 | ||
2391 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
2392 | msleep(1); | |
2393 | /* igbvf_down has a dependency on max_frame_size */ | |
2394 | adapter->max_frame_size = max_frame; | |
2395 | if (netif_running(netdev)) | |
2396 | igbvf_down(adapter); | |
2397 | ||
2398 | /* | |
2399 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
2400 | * means we reserve 2 more, this pushes us to allocate from the next | |
2401 | * larger slab size. | |
2402 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
2403 | * However with the new *_jumbo_rx* routines, jumbo receives will use | |
2404 | * fragmented skbs | |
2405 | */ | |
2406 | ||
2407 | if (max_frame <= 1024) | |
2408 | adapter->rx_buffer_len = 1024; | |
2409 | else if (max_frame <= 2048) | |
2410 | adapter->rx_buffer_len = 2048; | |
2411 | else | |
2412 | #if (PAGE_SIZE / 2) > 16384 | |
2413 | adapter->rx_buffer_len = 16384; | |
2414 | #else | |
2415 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
2416 | #endif | |
2417 | ||
2418 | ||
2419 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
2420 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
2421 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
2422 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + | |
2423 | ETH_FCS_LEN; | |
2424 | ||
2425 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
2426 | netdev->mtu, new_mtu); | |
2427 | netdev->mtu = new_mtu; | |
2428 | ||
2429 | if (netif_running(netdev)) | |
2430 | igbvf_up(adapter); | |
2431 | else | |
2432 | igbvf_reset(adapter); | |
2433 | ||
2434 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2435 | ||
2436 | return 0; | |
2437 | } | |
2438 | ||
2439 | static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2440 | { | |
2441 | switch (cmd) { | |
2442 | default: | |
2443 | return -EOPNOTSUPP; | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2448 | { | |
2449 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2450 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2451 | #ifdef CONFIG_PM | |
2452 | int retval = 0; | |
2453 | #endif | |
2454 | ||
2455 | netif_device_detach(netdev); | |
2456 | ||
2457 | if (netif_running(netdev)) { | |
2458 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
2459 | igbvf_down(adapter); | |
2460 | igbvf_free_irq(adapter); | |
2461 | } | |
2462 | ||
2463 | #ifdef CONFIG_PM | |
2464 | retval = pci_save_state(pdev); | |
2465 | if (retval) | |
2466 | return retval; | |
2467 | #endif | |
2468 | ||
2469 | pci_disable_device(pdev); | |
2470 | ||
2471 | return 0; | |
2472 | } | |
2473 | ||
2474 | #ifdef CONFIG_PM | |
2475 | static int igbvf_resume(struct pci_dev *pdev) | |
2476 | { | |
2477 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2478 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2479 | u32 err; | |
2480 | ||
2481 | pci_restore_state(pdev); | |
2482 | err = pci_enable_device_mem(pdev); | |
2483 | if (err) { | |
2484 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); | |
2485 | return err; | |
2486 | } | |
2487 | ||
2488 | pci_set_master(pdev); | |
2489 | ||
2490 | if (netif_running(netdev)) { | |
2491 | err = igbvf_request_irq(adapter); | |
2492 | if (err) | |
2493 | return err; | |
2494 | } | |
2495 | ||
2496 | igbvf_reset(adapter); | |
2497 | ||
2498 | if (netif_running(netdev)) | |
2499 | igbvf_up(adapter); | |
2500 | ||
2501 | netif_device_attach(netdev); | |
2502 | ||
2503 | return 0; | |
2504 | } | |
2505 | #endif | |
2506 | ||
2507 | static void igbvf_shutdown(struct pci_dev *pdev) | |
2508 | { | |
2509 | igbvf_suspend(pdev, PMSG_SUSPEND); | |
2510 | } | |
2511 | ||
2512 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2513 | /* | |
2514 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2515 | * without having to re-enable interrupts. It's not called while | |
2516 | * the interrupt routine is executing. | |
2517 | */ | |
2518 | static void igbvf_netpoll(struct net_device *netdev) | |
2519 | { | |
2520 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2521 | ||
2522 | disable_irq(adapter->pdev->irq); | |
2523 | ||
2524 | igbvf_clean_tx_irq(adapter->tx_ring); | |
2525 | ||
2526 | enable_irq(adapter->pdev->irq); | |
2527 | } | |
2528 | #endif | |
2529 | ||
2530 | /** | |
2531 | * igbvf_io_error_detected - called when PCI error is detected | |
2532 | * @pdev: Pointer to PCI device | |
2533 | * @state: The current pci connection state | |
2534 | * | |
2535 | * This function is called after a PCI bus error affecting | |
2536 | * this device has been detected. | |
2537 | */ | |
2538 | static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev, | |
2539 | pci_channel_state_t state) | |
2540 | { | |
2541 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2542 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2543 | ||
2544 | netif_device_detach(netdev); | |
2545 | ||
c06c430d DN |
2546 | if (state == pci_channel_io_perm_failure) |
2547 | return PCI_ERS_RESULT_DISCONNECT; | |
2548 | ||
d4e0fe01 AD |
2549 | if (netif_running(netdev)) |
2550 | igbvf_down(adapter); | |
2551 | pci_disable_device(pdev); | |
2552 | ||
2553 | /* Request a slot slot reset. */ | |
2554 | return PCI_ERS_RESULT_NEED_RESET; | |
2555 | } | |
2556 | ||
2557 | /** | |
2558 | * igbvf_io_slot_reset - called after the pci bus has been reset. | |
2559 | * @pdev: Pointer to PCI device | |
2560 | * | |
2561 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2562 | * resembles the first-half of the igbvf_resume routine. | |
2563 | */ | |
2564 | static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev) | |
2565 | { | |
2566 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2567 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2568 | ||
2569 | if (pci_enable_device_mem(pdev)) { | |
2570 | dev_err(&pdev->dev, | |
2571 | "Cannot re-enable PCI device after reset.\n"); | |
2572 | return PCI_ERS_RESULT_DISCONNECT; | |
2573 | } | |
2574 | pci_set_master(pdev); | |
2575 | ||
2576 | igbvf_reset(adapter); | |
2577 | ||
2578 | return PCI_ERS_RESULT_RECOVERED; | |
2579 | } | |
2580 | ||
2581 | /** | |
2582 | * igbvf_io_resume - called when traffic can start flowing again. | |
2583 | * @pdev: Pointer to PCI device | |
2584 | * | |
2585 | * This callback is called when the error recovery driver tells us that | |
2586 | * its OK to resume normal operation. Implementation resembles the | |
2587 | * second-half of the igbvf_resume routine. | |
2588 | */ | |
2589 | static void igbvf_io_resume(struct pci_dev *pdev) | |
2590 | { | |
2591 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2592 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2593 | ||
2594 | if (netif_running(netdev)) { | |
2595 | if (igbvf_up(adapter)) { | |
2596 | dev_err(&pdev->dev, | |
2597 | "can't bring device back up after reset\n"); | |
2598 | return; | |
2599 | } | |
2600 | } | |
2601 | ||
2602 | netif_device_attach(netdev); | |
2603 | } | |
2604 | ||
2605 | static void igbvf_print_device_info(struct igbvf_adapter *adapter) | |
2606 | { | |
2607 | struct e1000_hw *hw = &adapter->hw; | |
2608 | struct net_device *netdev = adapter->netdev; | |
2609 | struct pci_dev *pdev = adapter->pdev; | |
2610 | ||
2611 | dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n"); | |
2612 | dev_info(&pdev->dev, "Address: %02x:%02x:%02x:%02x:%02x:%02x\n", | |
2613 | /* MAC address */ | |
2614 | netdev->dev_addr[0], netdev->dev_addr[1], | |
2615 | netdev->dev_addr[2], netdev->dev_addr[3], | |
2616 | netdev->dev_addr[4], netdev->dev_addr[5]); | |
2617 | dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type); | |
2618 | } | |
2619 | ||
2620 | static const struct net_device_ops igbvf_netdev_ops = { | |
2621 | .ndo_open = igbvf_open, | |
2622 | .ndo_stop = igbvf_close, | |
2623 | .ndo_start_xmit = igbvf_xmit_frame, | |
2624 | .ndo_get_stats = igbvf_get_stats, | |
2625 | .ndo_set_multicast_list = igbvf_set_multi, | |
2626 | .ndo_set_mac_address = igbvf_set_mac, | |
2627 | .ndo_change_mtu = igbvf_change_mtu, | |
2628 | .ndo_do_ioctl = igbvf_ioctl, | |
2629 | .ndo_tx_timeout = igbvf_tx_timeout, | |
2630 | .ndo_vlan_rx_register = igbvf_vlan_rx_register, | |
2631 | .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid, | |
2632 | .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid, | |
2633 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2634 | .ndo_poll_controller = igbvf_netpoll, | |
2635 | #endif | |
2636 | }; | |
2637 | ||
2638 | /** | |
2639 | * igbvf_probe - Device Initialization Routine | |
2640 | * @pdev: PCI device information struct | |
2641 | * @ent: entry in igbvf_pci_tbl | |
2642 | * | |
2643 | * Returns 0 on success, negative on failure | |
2644 | * | |
2645 | * igbvf_probe initializes an adapter identified by a pci_dev structure. | |
2646 | * The OS initialization, configuring of the adapter private structure, | |
2647 | * and a hardware reset occur. | |
2648 | **/ | |
2649 | static int __devinit igbvf_probe(struct pci_dev *pdev, | |
2650 | const struct pci_device_id *ent) | |
2651 | { | |
2652 | struct net_device *netdev; | |
2653 | struct igbvf_adapter *adapter; | |
2654 | struct e1000_hw *hw; | |
2655 | const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data]; | |
2656 | ||
2657 | static int cards_found; | |
2658 | int err, pci_using_dac; | |
2659 | ||
2660 | err = pci_enable_device_mem(pdev); | |
2661 | if (err) | |
2662 | return err; | |
2663 | ||
2664 | pci_using_dac = 0; | |
8e20ce94 | 2665 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
d4e0fe01 | 2666 | if (!err) { |
8e20ce94 | 2667 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
d4e0fe01 AD |
2668 | if (!err) |
2669 | pci_using_dac = 1; | |
2670 | } else { | |
8e20ce94 | 2671 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
d4e0fe01 | 2672 | if (err) { |
8e20ce94 AM |
2673 | err = pci_set_consistent_dma_mask(pdev, |
2674 | DMA_BIT_MASK(32)); | |
d4e0fe01 AD |
2675 | if (err) { |
2676 | dev_err(&pdev->dev, "No usable DMA " | |
2677 | "configuration, aborting\n"); | |
2678 | goto err_dma; | |
2679 | } | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | err = pci_request_regions(pdev, igbvf_driver_name); | |
2684 | if (err) | |
2685 | goto err_pci_reg; | |
2686 | ||
2687 | pci_set_master(pdev); | |
2688 | ||
2689 | err = -ENOMEM; | |
2690 | netdev = alloc_etherdev(sizeof(struct igbvf_adapter)); | |
2691 | if (!netdev) | |
2692 | goto err_alloc_etherdev; | |
2693 | ||
2694 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2695 | ||
2696 | pci_set_drvdata(pdev, netdev); | |
2697 | adapter = netdev_priv(netdev); | |
2698 | hw = &adapter->hw; | |
2699 | adapter->netdev = netdev; | |
2700 | adapter->pdev = pdev; | |
2701 | adapter->ei = ei; | |
2702 | adapter->pba = ei->pba; | |
2703 | adapter->flags = ei->flags; | |
2704 | adapter->hw.back = adapter; | |
2705 | adapter->hw.mac.type = ei->mac; | |
2706 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; | |
2707 | ||
2708 | /* PCI config space info */ | |
2709 | ||
2710 | hw->vendor_id = pdev->vendor; | |
2711 | hw->device_id = pdev->device; | |
2712 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2713 | hw->subsystem_device_id = pdev->subsystem_device; | |
2714 | ||
2715 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2716 | ||
2717 | err = -EIO; | |
2718 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2719 | pci_resource_len(pdev, 0)); | |
2720 | ||
2721 | if (!adapter->hw.hw_addr) | |
2722 | goto err_ioremap; | |
2723 | ||
2724 | if (ei->get_variants) { | |
2725 | err = ei->get_variants(adapter); | |
2726 | if (err) | |
2727 | goto err_ioremap; | |
2728 | } | |
2729 | ||
2730 | /* setup adapter struct */ | |
2731 | err = igbvf_sw_init(adapter); | |
2732 | if (err) | |
2733 | goto err_sw_init; | |
2734 | ||
2735 | /* construct the net_device struct */ | |
2736 | netdev->netdev_ops = &igbvf_netdev_ops; | |
2737 | ||
2738 | igbvf_set_ethtool_ops(netdev); | |
2739 | netdev->watchdog_timeo = 5 * HZ; | |
2740 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2741 | ||
2742 | adapter->bd_number = cards_found++; | |
2743 | ||
2744 | netdev->features = NETIF_F_SG | | |
2745 | NETIF_F_IP_CSUM | | |
2746 | NETIF_F_HW_VLAN_TX | | |
2747 | NETIF_F_HW_VLAN_RX | | |
2748 | NETIF_F_HW_VLAN_FILTER; | |
2749 | ||
2750 | netdev->features |= NETIF_F_IPV6_CSUM; | |
2751 | netdev->features |= NETIF_F_TSO; | |
2752 | netdev->features |= NETIF_F_TSO6; | |
2753 | ||
2754 | if (pci_using_dac) | |
2755 | netdev->features |= NETIF_F_HIGHDMA; | |
2756 | ||
2757 | netdev->vlan_features |= NETIF_F_TSO; | |
2758 | netdev->vlan_features |= NETIF_F_TSO6; | |
2759 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
2760 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; | |
2761 | netdev->vlan_features |= NETIF_F_SG; | |
2762 | ||
2763 | /*reset the controller to put the device in a known good state */ | |
2764 | err = hw->mac.ops.reset_hw(hw); | |
2765 | if (err) { | |
2766 | dev_info(&pdev->dev, | |
1242b6f3 WM |
2767 | "PF still in reset state, assigning new address." |
2768 | " Is the PF interface up?\n"); | |
d4e0fe01 AD |
2769 | random_ether_addr(hw->mac.addr); |
2770 | } else { | |
2771 | err = hw->mac.ops.read_mac_addr(hw); | |
2772 | if (err) { | |
2773 | dev_err(&pdev->dev, "Error reading MAC address\n"); | |
2774 | goto err_hw_init; | |
2775 | } | |
2776 | } | |
2777 | ||
2778 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2779 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2780 | ||
2781 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
2782 | dev_err(&pdev->dev, "Invalid MAC Address: " | |
2783 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
2784 | netdev->dev_addr[0], netdev->dev_addr[1], | |
2785 | netdev->dev_addr[2], netdev->dev_addr[3], | |
2786 | netdev->dev_addr[4], netdev->dev_addr[5]); | |
2787 | err = -EIO; | |
2788 | goto err_hw_init; | |
2789 | } | |
2790 | ||
2791 | setup_timer(&adapter->watchdog_timer, &igbvf_watchdog, | |
2792 | (unsigned long) adapter); | |
2793 | ||
2794 | INIT_WORK(&adapter->reset_task, igbvf_reset_task); | |
2795 | INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task); | |
2796 | ||
2797 | /* ring size defaults */ | |
2798 | adapter->rx_ring->count = 1024; | |
2799 | adapter->tx_ring->count = 1024; | |
2800 | ||
2801 | /* reset the hardware with the new settings */ | |
2802 | igbvf_reset(adapter); | |
2803 | ||
2804 | /* tell the stack to leave us alone until igbvf_open() is called */ | |
2805 | netif_carrier_off(netdev); | |
2806 | netif_stop_queue(netdev); | |
2807 | ||
2808 | strcpy(netdev->name, "eth%d"); | |
2809 | err = register_netdev(netdev); | |
2810 | if (err) | |
2811 | goto err_hw_init; | |
2812 | ||
2813 | igbvf_print_device_info(adapter); | |
2814 | ||
2815 | igbvf_initialize_last_counter_stats(adapter); | |
2816 | ||
2817 | return 0; | |
2818 | ||
2819 | err_hw_init: | |
2820 | kfree(adapter->tx_ring); | |
2821 | kfree(adapter->rx_ring); | |
2822 | err_sw_init: | |
2823 | igbvf_reset_interrupt_capability(adapter); | |
2824 | iounmap(adapter->hw.hw_addr); | |
2825 | err_ioremap: | |
2826 | free_netdev(netdev); | |
2827 | err_alloc_etherdev: | |
2828 | pci_release_regions(pdev); | |
2829 | err_pci_reg: | |
2830 | err_dma: | |
2831 | pci_disable_device(pdev); | |
2832 | return err; | |
2833 | } | |
2834 | ||
2835 | /** | |
2836 | * igbvf_remove - Device Removal Routine | |
2837 | * @pdev: PCI device information struct | |
2838 | * | |
2839 | * igbvf_remove is called by the PCI subsystem to alert the driver | |
2840 | * that it should release a PCI device. The could be caused by a | |
2841 | * Hot-Plug event, or because the driver is going to be removed from | |
2842 | * memory. | |
2843 | **/ | |
2844 | static void __devexit igbvf_remove(struct pci_dev *pdev) | |
2845 | { | |
2846 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2847 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2848 | struct e1000_hw *hw = &adapter->hw; | |
2849 | ||
2850 | /* | |
2851 | * flush_scheduled work may reschedule our watchdog task, so | |
2852 | * explicitly disable watchdog tasks from being rescheduled | |
2853 | */ | |
2854 | set_bit(__IGBVF_DOWN, &adapter->state); | |
2855 | del_timer_sync(&adapter->watchdog_timer); | |
2856 | ||
2857 | flush_scheduled_work(); | |
2858 | ||
2859 | unregister_netdev(netdev); | |
2860 | ||
2861 | igbvf_reset_interrupt_capability(adapter); | |
2862 | ||
2863 | /* | |
2864 | * it is important to delete the napi struct prior to freeing the | |
2865 | * rx ring so that you do not end up with null pointer refs | |
2866 | */ | |
2867 | netif_napi_del(&adapter->rx_ring->napi); | |
2868 | kfree(adapter->tx_ring); | |
2869 | kfree(adapter->rx_ring); | |
2870 | ||
2871 | iounmap(hw->hw_addr); | |
2872 | if (hw->flash_address) | |
2873 | iounmap(hw->flash_address); | |
2874 | pci_release_regions(pdev); | |
2875 | ||
2876 | free_netdev(netdev); | |
2877 | ||
2878 | pci_disable_device(pdev); | |
2879 | } | |
2880 | ||
2881 | /* PCI Error Recovery (ERS) */ | |
2882 | static struct pci_error_handlers igbvf_err_handler = { | |
2883 | .error_detected = igbvf_io_error_detected, | |
2884 | .slot_reset = igbvf_io_slot_reset, | |
2885 | .resume = igbvf_io_resume, | |
2886 | }; | |
2887 | ||
2888 | static struct pci_device_id igbvf_pci_tbl[] = { | |
2889 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf }, | |
2890 | { } /* terminate list */ | |
2891 | }; | |
2892 | MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl); | |
2893 | ||
2894 | /* PCI Device API Driver */ | |
2895 | static struct pci_driver igbvf_driver = { | |
2896 | .name = igbvf_driver_name, | |
2897 | .id_table = igbvf_pci_tbl, | |
2898 | .probe = igbvf_probe, | |
2899 | .remove = __devexit_p(igbvf_remove), | |
2900 | #ifdef CONFIG_PM | |
2901 | /* Power Management Hooks */ | |
2902 | .suspend = igbvf_suspend, | |
2903 | .resume = igbvf_resume, | |
2904 | #endif | |
2905 | .shutdown = igbvf_shutdown, | |
2906 | .err_handler = &igbvf_err_handler | |
2907 | }; | |
2908 | ||
2909 | /** | |
2910 | * igbvf_init_module - Driver Registration Routine | |
2911 | * | |
2912 | * igbvf_init_module is the first routine called when the driver is | |
2913 | * loaded. All it does is register with the PCI subsystem. | |
2914 | **/ | |
2915 | static int __init igbvf_init_module(void) | |
2916 | { | |
2917 | int ret; | |
2918 | printk(KERN_INFO "%s - version %s\n", | |
2919 | igbvf_driver_string, igbvf_driver_version); | |
2920 | printk(KERN_INFO "%s\n", igbvf_copyright); | |
2921 | ||
2922 | ret = pci_register_driver(&igbvf_driver); | |
2923 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name, | |
2924 | PM_QOS_DEFAULT_VALUE); | |
2925 | ||
2926 | return ret; | |
2927 | } | |
2928 | module_init(igbvf_init_module); | |
2929 | ||
2930 | /** | |
2931 | * igbvf_exit_module - Driver Exit Cleanup Routine | |
2932 | * | |
2933 | * igbvf_exit_module is called just before the driver is removed | |
2934 | * from memory. | |
2935 | **/ | |
2936 | static void __exit igbvf_exit_module(void) | |
2937 | { | |
2938 | pci_unregister_driver(&igbvf_driver); | |
2939 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name); | |
2940 | } | |
2941 | module_exit(igbvf_exit_module); | |
2942 | ||
2943 | ||
2944 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
2945 | MODULE_DESCRIPTION("Intel(R) 82576 Virtual Function Network Driver"); | |
2946 | MODULE_LICENSE("GPL"); | |
2947 | MODULE_VERSION(DRV_VERSION); | |
2948 | ||
2949 | /* netdev.c */ |