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Commit | Line | Data |
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d4e0fe01 AD |
1 | /******************************************************************************* |
2 | ||
3 | Intel(R) 82576 Virtual Function Linux driver | |
2a06ed92 | 4 | Copyright(c) 2009 - 2012 Intel Corporation. |
d4e0fe01 AD |
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 | ||
a4ba8cbe JK |
28 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
29 | ||
d4e0fe01 AD |
30 | #include <linux/module.h> |
31 | #include <linux/types.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/pci.h> | |
34 | #include <linux/vmalloc.h> | |
35 | #include <linux/pagemap.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/netdevice.h> | |
38 | #include <linux/tcp.h> | |
39 | #include <linux/ipv6.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
d4e0fe01 AD |
41 | #include <net/checksum.h> |
42 | #include <net/ip6_checksum.h> | |
43 | #include <linux/mii.h> | |
44 | #include <linux/ethtool.h> | |
45 | #include <linux/if_vlan.h> | |
70c71606 | 46 | #include <linux/prefetch.h> |
d4e0fe01 AD |
47 | |
48 | #include "igbvf.h" | |
49 | ||
7d94eb84 | 50 | #define DRV_VERSION "2.0.1-k" |
d4e0fe01 AD |
51 | char igbvf_driver_name[] = "igbvf"; |
52 | const char igbvf_driver_version[] = DRV_VERSION; | |
53 | static const char igbvf_driver_string[] = | |
10090751 | 54 | "Intel(R) Gigabit Virtual Function Network Driver"; |
2c20ebba | 55 | static const char igbvf_copyright[] = |
2a06ed92 | 56 | "Copyright (c) 2009 - 2012 Intel Corporation."; |
d4e0fe01 AD |
57 | |
58 | static int igbvf_poll(struct napi_struct *napi, int budget); | |
2d165771 AD |
59 | static void igbvf_reset(struct igbvf_adapter *); |
60 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *); | |
61 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *); | |
d4e0fe01 AD |
62 | |
63 | static struct igbvf_info igbvf_vf_info = { | |
64 | .mac = e1000_vfadapt, | |
0364d6fd | 65 | .flags = 0, |
d4e0fe01 AD |
66 | .pba = 10, |
67 | .init_ops = e1000_init_function_pointers_vf, | |
68 | }; | |
69 | ||
031d7952 WM |
70 | static struct igbvf_info igbvf_i350_vf_info = { |
71 | .mac = e1000_vfadapt_i350, | |
72 | .flags = 0, | |
73 | .pba = 10, | |
74 | .init_ops = e1000_init_function_pointers_vf, | |
75 | }; | |
76 | ||
d4e0fe01 AD |
77 | static const struct igbvf_info *igbvf_info_tbl[] = { |
78 | [board_vf] = &igbvf_vf_info, | |
031d7952 | 79 | [board_i350_vf] = &igbvf_i350_vf_info, |
d4e0fe01 AD |
80 | }; |
81 | ||
82 | /** | |
83 | * igbvf_desc_unused - calculate if we have unused descriptors | |
84 | **/ | |
85 | static int igbvf_desc_unused(struct igbvf_ring *ring) | |
86 | { | |
87 | if (ring->next_to_clean > ring->next_to_use) | |
88 | return ring->next_to_clean - ring->next_to_use - 1; | |
89 | ||
90 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
91 | } | |
92 | ||
93 | /** | |
94 | * igbvf_receive_skb - helper function to handle Rx indications | |
95 | * @adapter: board private structure | |
96 | * @status: descriptor status field as written by hardware | |
97 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
98 | * @skb: pointer to sk_buff to be indicated to stack | |
99 | **/ | |
100 | static void igbvf_receive_skb(struct igbvf_adapter *adapter, | |
101 | struct net_device *netdev, | |
102 | struct sk_buff *skb, | |
103 | u32 status, u16 vlan) | |
104 | { | |
a0f1d603 JP |
105 | if (status & E1000_RXD_STAT_VP) { |
106 | u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
4d2d55ac GR |
107 | if (test_bit(vid, adapter->active_vlans)) |
108 | __vlan_hwaccel_put_tag(skb, vid); | |
a0f1d603 JP |
109 | } |
110 | netif_receive_skb(skb); | |
d4e0fe01 AD |
111 | } |
112 | ||
113 | static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, | |
114 | u32 status_err, struct sk_buff *skb) | |
115 | { | |
bc8acf2c | 116 | skb_checksum_none_assert(skb); |
d4e0fe01 AD |
117 | |
118 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
0364d6fd AD |
119 | if ((status_err & E1000_RXD_STAT_IXSM) || |
120 | (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED)) | |
d4e0fe01 | 121 | return; |
0364d6fd | 122 | |
d4e0fe01 AD |
123 | /* TCP/UDP checksum error bit is set */ |
124 | if (status_err & | |
125 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
126 | /* let the stack verify checksum errors */ | |
127 | adapter->hw_csum_err++; | |
128 | return; | |
129 | } | |
0364d6fd | 130 | |
d4e0fe01 AD |
131 | /* It must be a TCP or UDP packet with a valid checksum */ |
132 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
133 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
134 | ||
135 | adapter->hw_csum_good++; | |
136 | } | |
137 | ||
138 | /** | |
139 | * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split | |
140 | * @rx_ring: address of ring structure to repopulate | |
141 | * @cleaned_count: number of buffers to repopulate | |
142 | **/ | |
143 | static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring, | |
144 | int cleaned_count) | |
145 | { | |
146 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
147 | struct net_device *netdev = adapter->netdev; | |
148 | struct pci_dev *pdev = adapter->pdev; | |
149 | union e1000_adv_rx_desc *rx_desc; | |
150 | struct igbvf_buffer *buffer_info; | |
151 | struct sk_buff *skb; | |
152 | unsigned int i; | |
153 | int bufsz; | |
154 | ||
155 | i = rx_ring->next_to_use; | |
156 | buffer_info = &rx_ring->buffer_info[i]; | |
157 | ||
158 | if (adapter->rx_ps_hdr_size) | |
159 | bufsz = adapter->rx_ps_hdr_size; | |
160 | else | |
161 | bufsz = adapter->rx_buffer_len; | |
d4e0fe01 AD |
162 | |
163 | while (cleaned_count--) { | |
164 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
165 | ||
166 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { | |
167 | if (!buffer_info->page) { | |
168 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
169 | if (!buffer_info->page) { | |
170 | adapter->alloc_rx_buff_failed++; | |
171 | goto no_buffers; | |
172 | } | |
173 | buffer_info->page_offset = 0; | |
174 | } else { | |
175 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
176 | } | |
177 | buffer_info->page_dma = | |
123e9f1a | 178 | dma_map_page(&pdev->dev, buffer_info->page, |
d4e0fe01 AD |
179 | buffer_info->page_offset, |
180 | PAGE_SIZE / 2, | |
123e9f1a | 181 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
182 | } |
183 | ||
184 | if (!buffer_info->skb) { | |
89d71a66 | 185 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
d4e0fe01 AD |
186 | if (!skb) { |
187 | adapter->alloc_rx_buff_failed++; | |
188 | goto no_buffers; | |
189 | } | |
190 | ||
d4e0fe01 | 191 | buffer_info->skb = skb; |
123e9f1a | 192 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
d4e0fe01 | 193 | bufsz, |
123e9f1a | 194 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
195 | } |
196 | /* Refresh the desc even if buffer_addrs didn't change because | |
197 | * each write-back erases this info. */ | |
198 | if (adapter->rx_ps_hdr_size) { | |
199 | rx_desc->read.pkt_addr = | |
200 | cpu_to_le64(buffer_info->page_dma); | |
201 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
202 | } else { | |
203 | rx_desc->read.pkt_addr = | |
204 | cpu_to_le64(buffer_info->dma); | |
205 | rx_desc->read.hdr_addr = 0; | |
206 | } | |
207 | ||
208 | i++; | |
209 | if (i == rx_ring->count) | |
210 | i = 0; | |
211 | buffer_info = &rx_ring->buffer_info[i]; | |
212 | } | |
213 | ||
214 | no_buffers: | |
215 | if (rx_ring->next_to_use != i) { | |
216 | rx_ring->next_to_use = i; | |
217 | if (i == 0) | |
218 | i = (rx_ring->count - 1); | |
219 | else | |
220 | i--; | |
221 | ||
222 | /* Force memory writes to complete before letting h/w | |
223 | * know there are new descriptors to fetch. (Only | |
224 | * applicable for weak-ordered memory model archs, | |
225 | * such as IA-64). */ | |
226 | wmb(); | |
227 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
228 | } | |
229 | } | |
230 | ||
231 | /** | |
232 | * igbvf_clean_rx_irq - Send received data up the network stack; legacy | |
233 | * @adapter: board private structure | |
234 | * | |
235 | * the return value indicates whether actual cleaning was done, there | |
236 | * is no guarantee that everything was cleaned | |
237 | **/ | |
238 | static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter, | |
239 | int *work_done, int work_to_do) | |
240 | { | |
241 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
242 | struct net_device *netdev = adapter->netdev; | |
243 | struct pci_dev *pdev = adapter->pdev; | |
244 | union e1000_adv_rx_desc *rx_desc, *next_rxd; | |
245 | struct igbvf_buffer *buffer_info, *next_buffer; | |
246 | struct sk_buff *skb; | |
247 | bool cleaned = false; | |
248 | int cleaned_count = 0; | |
249 | unsigned int total_bytes = 0, total_packets = 0; | |
250 | unsigned int i; | |
251 | u32 length, hlen, staterr; | |
252 | ||
253 | i = rx_ring->next_to_clean; | |
254 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
255 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
256 | ||
257 | while (staterr & E1000_RXD_STAT_DD) { | |
258 | if (*work_done >= work_to_do) | |
259 | break; | |
260 | (*work_done)++; | |
2d0bb1c1 | 261 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
d4e0fe01 AD |
262 | |
263 | buffer_info = &rx_ring->buffer_info[i]; | |
264 | ||
265 | /* HW will not DMA in data larger than the given buffer, even | |
266 | * if it parses the (NFS, of course) header to be larger. In | |
267 | * that case, it fills the header buffer and spills the rest | |
268 | * into the page. | |
269 | */ | |
270 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) & | |
271 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
272 | if (hlen > adapter->rx_ps_hdr_size) | |
273 | hlen = adapter->rx_ps_hdr_size; | |
274 | ||
275 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
276 | cleaned = true; | |
277 | cleaned_count++; | |
278 | ||
279 | skb = buffer_info->skb; | |
280 | prefetch(skb->data - NET_IP_ALIGN); | |
281 | buffer_info->skb = NULL; | |
282 | if (!adapter->rx_ps_hdr_size) { | |
123e9f1a | 283 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 284 | adapter->rx_buffer_len, |
123e9f1a | 285 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
286 | buffer_info->dma = 0; |
287 | skb_put(skb, length); | |
288 | goto send_up; | |
289 | } | |
290 | ||
291 | if (!skb_shinfo(skb)->nr_frags) { | |
123e9f1a | 292 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
92d947b7 | 293 | adapter->rx_ps_hdr_size, |
123e9f1a | 294 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
295 | skb_put(skb, hlen); |
296 | } | |
297 | ||
298 | if (length) { | |
123e9f1a | 299 | dma_unmap_page(&pdev->dev, buffer_info->page_dma, |
d4e0fe01 | 300 | PAGE_SIZE / 2, |
123e9f1a | 301 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
302 | buffer_info->page_dma = 0; |
303 | ||
ec857fd4 | 304 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, |
d4e0fe01 AD |
305 | buffer_info->page, |
306 | buffer_info->page_offset, | |
307 | length); | |
308 | ||
309 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
310 | (page_count(buffer_info->page) != 1)) | |
311 | buffer_info->page = NULL; | |
312 | else | |
313 | get_page(buffer_info->page); | |
314 | ||
315 | skb->len += length; | |
316 | skb->data_len += length; | |
7b8b5961 | 317 | skb->truesize += PAGE_SIZE / 2; |
d4e0fe01 AD |
318 | } |
319 | send_up: | |
320 | i++; | |
321 | if (i == rx_ring->count) | |
322 | i = 0; | |
323 | next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
324 | prefetch(next_rxd); | |
325 | next_buffer = &rx_ring->buffer_info[i]; | |
326 | ||
327 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
328 | buffer_info->skb = next_buffer->skb; | |
329 | buffer_info->dma = next_buffer->dma; | |
330 | next_buffer->skb = skb; | |
331 | next_buffer->dma = 0; | |
332 | goto next_desc; | |
333 | } | |
334 | ||
335 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
336 | dev_kfree_skb_irq(skb); | |
337 | goto next_desc; | |
338 | } | |
339 | ||
340 | total_bytes += skb->len; | |
341 | total_packets++; | |
342 | ||
343 | igbvf_rx_checksum_adv(adapter, staterr, skb); | |
344 | ||
345 | skb->protocol = eth_type_trans(skb, netdev); | |
346 | ||
347 | igbvf_receive_skb(adapter, netdev, skb, staterr, | |
348 | rx_desc->wb.upper.vlan); | |
349 | ||
d4e0fe01 AD |
350 | next_desc: |
351 | rx_desc->wb.upper.status_error = 0; | |
352 | ||
353 | /* return some buffers to hardware, one at a time is too slow */ | |
354 | if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) { | |
355 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
356 | cleaned_count = 0; | |
357 | } | |
358 | ||
359 | /* use prefetched values */ | |
360 | rx_desc = next_rxd; | |
361 | buffer_info = next_buffer; | |
362 | ||
363 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
364 | } | |
365 | ||
366 | rx_ring->next_to_clean = i; | |
367 | cleaned_count = igbvf_desc_unused(rx_ring); | |
368 | ||
369 | if (cleaned_count) | |
370 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
371 | ||
372 | adapter->total_rx_packets += total_packets; | |
373 | adapter->total_rx_bytes += total_bytes; | |
374 | adapter->net_stats.rx_bytes += total_bytes; | |
375 | adapter->net_stats.rx_packets += total_packets; | |
376 | return cleaned; | |
377 | } | |
378 | ||
379 | static void igbvf_put_txbuf(struct igbvf_adapter *adapter, | |
380 | struct igbvf_buffer *buffer_info) | |
381 | { | |
a7d5ca40 AD |
382 | if (buffer_info->dma) { |
383 | if (buffer_info->mapped_as_page) | |
123e9f1a | 384 | dma_unmap_page(&adapter->pdev->dev, |
a7d5ca40 AD |
385 | buffer_info->dma, |
386 | buffer_info->length, | |
123e9f1a | 387 | DMA_TO_DEVICE); |
a7d5ca40 | 388 | else |
123e9f1a | 389 | dma_unmap_single(&adapter->pdev->dev, |
a7d5ca40 AD |
390 | buffer_info->dma, |
391 | buffer_info->length, | |
123e9f1a | 392 | DMA_TO_DEVICE); |
a7d5ca40 AD |
393 | buffer_info->dma = 0; |
394 | } | |
d4e0fe01 | 395 | if (buffer_info->skb) { |
d4e0fe01 AD |
396 | dev_kfree_skb_any(buffer_info->skb); |
397 | buffer_info->skb = NULL; | |
398 | } | |
399 | buffer_info->time_stamp = 0; | |
400 | } | |
401 | ||
d4e0fe01 AD |
402 | /** |
403 | * igbvf_setup_tx_resources - allocate Tx resources (Descriptors) | |
404 | * @adapter: board private structure | |
405 | * | |
406 | * Return 0 on success, negative on failure | |
407 | **/ | |
408 | int igbvf_setup_tx_resources(struct igbvf_adapter *adapter, | |
409 | struct igbvf_ring *tx_ring) | |
410 | { | |
411 | struct pci_dev *pdev = adapter->pdev; | |
412 | int size; | |
413 | ||
414 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
89bf67f1 | 415 | tx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
416 | if (!tx_ring->buffer_info) |
417 | goto err; | |
d4e0fe01 AD |
418 | |
419 | /* round up to nearest 4K */ | |
420 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); | |
421 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
422 | ||
123e9f1a NN |
423 | tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, |
424 | &tx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
425 | |
426 | if (!tx_ring->desc) | |
427 | goto err; | |
428 | ||
429 | tx_ring->adapter = adapter; | |
430 | tx_ring->next_to_use = 0; | |
431 | tx_ring->next_to_clean = 0; | |
432 | ||
433 | return 0; | |
434 | err: | |
435 | vfree(tx_ring->buffer_info); | |
436 | dev_err(&adapter->pdev->dev, | |
437 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
438 | return -ENOMEM; | |
439 | } | |
440 | ||
441 | /** | |
442 | * igbvf_setup_rx_resources - allocate Rx resources (Descriptors) | |
443 | * @adapter: board private structure | |
444 | * | |
445 | * Returns 0 on success, negative on failure | |
446 | **/ | |
447 | int igbvf_setup_rx_resources(struct igbvf_adapter *adapter, | |
448 | struct igbvf_ring *rx_ring) | |
449 | { | |
450 | struct pci_dev *pdev = adapter->pdev; | |
451 | int size, desc_len; | |
452 | ||
453 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
89bf67f1 | 454 | rx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
455 | if (!rx_ring->buffer_info) |
456 | goto err; | |
d4e0fe01 AD |
457 | |
458 | desc_len = sizeof(union e1000_adv_rx_desc); | |
459 | ||
460 | /* Round up to nearest 4K */ | |
461 | rx_ring->size = rx_ring->count * desc_len; | |
462 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
463 | ||
123e9f1a NN |
464 | rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, |
465 | &rx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
466 | |
467 | if (!rx_ring->desc) | |
468 | goto err; | |
469 | ||
470 | rx_ring->next_to_clean = 0; | |
471 | rx_ring->next_to_use = 0; | |
472 | ||
473 | rx_ring->adapter = adapter; | |
474 | ||
475 | return 0; | |
476 | ||
477 | err: | |
478 | vfree(rx_ring->buffer_info); | |
479 | rx_ring->buffer_info = NULL; | |
480 | dev_err(&adapter->pdev->dev, | |
481 | "Unable to allocate memory for the receive descriptor ring\n"); | |
482 | return -ENOMEM; | |
483 | } | |
484 | ||
485 | /** | |
486 | * igbvf_clean_tx_ring - Free Tx Buffers | |
487 | * @tx_ring: ring to be cleaned | |
488 | **/ | |
489 | static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring) | |
490 | { | |
491 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
492 | struct igbvf_buffer *buffer_info; | |
493 | unsigned long size; | |
494 | unsigned int i; | |
495 | ||
496 | if (!tx_ring->buffer_info) | |
497 | return; | |
498 | ||
499 | /* Free all the Tx ring sk_buffs */ | |
500 | for (i = 0; i < tx_ring->count; i++) { | |
501 | buffer_info = &tx_ring->buffer_info[i]; | |
502 | igbvf_put_txbuf(adapter, buffer_info); | |
503 | } | |
504 | ||
505 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
506 | memset(tx_ring->buffer_info, 0, size); | |
507 | ||
508 | /* Zero out the descriptor ring */ | |
509 | memset(tx_ring->desc, 0, tx_ring->size); | |
510 | ||
511 | tx_ring->next_to_use = 0; | |
512 | tx_ring->next_to_clean = 0; | |
513 | ||
514 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
515 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
516 | } | |
517 | ||
518 | /** | |
519 | * igbvf_free_tx_resources - Free Tx Resources per Queue | |
520 | * @tx_ring: ring to free resources from | |
521 | * | |
522 | * Free all transmit software resources | |
523 | **/ | |
524 | void igbvf_free_tx_resources(struct igbvf_ring *tx_ring) | |
525 | { | |
526 | struct pci_dev *pdev = tx_ring->adapter->pdev; | |
527 | ||
528 | igbvf_clean_tx_ring(tx_ring); | |
529 | ||
530 | vfree(tx_ring->buffer_info); | |
531 | tx_ring->buffer_info = NULL; | |
532 | ||
123e9f1a NN |
533 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
534 | tx_ring->dma); | |
d4e0fe01 AD |
535 | |
536 | tx_ring->desc = NULL; | |
537 | } | |
538 | ||
539 | /** | |
540 | * igbvf_clean_rx_ring - Free Rx Buffers per Queue | |
541 | * @adapter: board private structure | |
542 | **/ | |
543 | static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring) | |
544 | { | |
545 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
546 | struct igbvf_buffer *buffer_info; | |
547 | struct pci_dev *pdev = adapter->pdev; | |
548 | unsigned long size; | |
549 | unsigned int i; | |
550 | ||
551 | if (!rx_ring->buffer_info) | |
552 | return; | |
553 | ||
554 | /* Free all the Rx ring sk_buffs */ | |
555 | for (i = 0; i < rx_ring->count; i++) { | |
556 | buffer_info = &rx_ring->buffer_info[i]; | |
557 | if (buffer_info->dma) { | |
558 | if (adapter->rx_ps_hdr_size){ | |
123e9f1a | 559 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 560 | adapter->rx_ps_hdr_size, |
123e9f1a | 561 | DMA_FROM_DEVICE); |
d4e0fe01 | 562 | } else { |
123e9f1a | 563 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 564 | adapter->rx_buffer_len, |
123e9f1a | 565 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
566 | } |
567 | buffer_info->dma = 0; | |
568 | } | |
569 | ||
570 | if (buffer_info->skb) { | |
571 | dev_kfree_skb(buffer_info->skb); | |
572 | buffer_info->skb = NULL; | |
573 | } | |
574 | ||
575 | if (buffer_info->page) { | |
576 | if (buffer_info->page_dma) | |
123e9f1a NN |
577 | dma_unmap_page(&pdev->dev, |
578 | buffer_info->page_dma, | |
d4e0fe01 | 579 | PAGE_SIZE / 2, |
123e9f1a | 580 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
581 | put_page(buffer_info->page); |
582 | buffer_info->page = NULL; | |
583 | buffer_info->page_dma = 0; | |
584 | buffer_info->page_offset = 0; | |
585 | } | |
586 | } | |
587 | ||
588 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
589 | memset(rx_ring->buffer_info, 0, size); | |
590 | ||
591 | /* Zero out the descriptor ring */ | |
592 | memset(rx_ring->desc, 0, rx_ring->size); | |
593 | ||
594 | rx_ring->next_to_clean = 0; | |
595 | rx_ring->next_to_use = 0; | |
596 | ||
597 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
598 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
599 | } | |
600 | ||
601 | /** | |
602 | * igbvf_free_rx_resources - Free Rx Resources | |
603 | * @rx_ring: ring to clean the resources from | |
604 | * | |
605 | * Free all receive software resources | |
606 | **/ | |
607 | ||
608 | void igbvf_free_rx_resources(struct igbvf_ring *rx_ring) | |
609 | { | |
610 | struct pci_dev *pdev = rx_ring->adapter->pdev; | |
611 | ||
612 | igbvf_clean_rx_ring(rx_ring); | |
613 | ||
614 | vfree(rx_ring->buffer_info); | |
615 | rx_ring->buffer_info = NULL; | |
616 | ||
617 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
618 | rx_ring->dma); | |
619 | rx_ring->desc = NULL; | |
620 | } | |
621 | ||
622 | /** | |
623 | * igbvf_update_itr - update the dynamic ITR value based on statistics | |
624 | * @adapter: pointer to adapter | |
625 | * @itr_setting: current adapter->itr | |
626 | * @packets: the number of packets during this measurement interval | |
627 | * @bytes: the number of bytes during this measurement interval | |
628 | * | |
629 | * Stores a new ITR value based on packets and byte | |
630 | * counts during the last interrupt. The advantage of per interrupt | |
631 | * computation is faster updates and more accurate ITR for the current | |
632 | * traffic pattern. Constants in this function were computed | |
633 | * based on theoretical maximum wire speed and thresholds were set based | |
634 | * on testing data as well as attempting to minimize response time | |
ab50a2a4 | 635 | * while increasing bulk throughput. |
d4e0fe01 | 636 | **/ |
ab50a2a4 MW |
637 | static enum latency_range igbvf_update_itr(struct igbvf_adapter *adapter, |
638 | enum latency_range itr_setting, | |
639 | int packets, int bytes) | |
d4e0fe01 | 640 | { |
ab50a2a4 | 641 | enum latency_range retval = itr_setting; |
d4e0fe01 AD |
642 | |
643 | if (packets == 0) | |
644 | goto update_itr_done; | |
645 | ||
646 | switch (itr_setting) { | |
647 | case lowest_latency: | |
648 | /* handle TSO and jumbo frames */ | |
649 | if (bytes/packets > 8000) | |
650 | retval = bulk_latency; | |
651 | else if ((packets < 5) && (bytes > 512)) | |
652 | retval = low_latency; | |
653 | break; | |
654 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
655 | if (bytes > 10000) { | |
656 | /* this if handles the TSO accounting */ | |
657 | if (bytes/packets > 8000) | |
658 | retval = bulk_latency; | |
659 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
660 | retval = bulk_latency; | |
661 | else if ((packets > 35)) | |
662 | retval = lowest_latency; | |
663 | } else if (bytes/packets > 2000) { | |
664 | retval = bulk_latency; | |
665 | } else if (packets <= 2 && bytes < 512) { | |
666 | retval = lowest_latency; | |
667 | } | |
668 | break; | |
669 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
670 | if (bytes > 25000) { | |
671 | if (packets > 35) | |
672 | retval = low_latency; | |
673 | } else if (bytes < 6000) { | |
674 | retval = low_latency; | |
675 | } | |
676 | break; | |
ab50a2a4 MW |
677 | default: |
678 | break; | |
d4e0fe01 AD |
679 | } |
680 | ||
681 | update_itr_done: | |
682 | return retval; | |
683 | } | |
684 | ||
ab50a2a4 | 685 | static int igbvf_range_to_itr(enum latency_range current_range) |
d4e0fe01 | 686 | { |
ab50a2a4 | 687 | int new_itr; |
d4e0fe01 | 688 | |
ab50a2a4 | 689 | switch (current_range) { |
d4e0fe01 AD |
690 | /* counts and packets in update_itr are dependent on these numbers */ |
691 | case lowest_latency: | |
ab50a2a4 | 692 | new_itr = IGBVF_70K_ITR; |
d4e0fe01 AD |
693 | break; |
694 | case low_latency: | |
ab50a2a4 | 695 | new_itr = IGBVF_20K_ITR; |
d4e0fe01 AD |
696 | break; |
697 | case bulk_latency: | |
ab50a2a4 | 698 | new_itr = IGBVF_4K_ITR; |
d4e0fe01 AD |
699 | break; |
700 | default: | |
ab50a2a4 | 701 | new_itr = IGBVF_START_ITR; |
d4e0fe01 AD |
702 | break; |
703 | } | |
ab50a2a4 MW |
704 | return new_itr; |
705 | } | |
706 | ||
707 | static void igbvf_set_itr(struct igbvf_adapter *adapter) | |
708 | { | |
709 | u32 new_itr; | |
710 | ||
711 | adapter->tx_ring->itr_range = | |
712 | igbvf_update_itr(adapter, | |
713 | adapter->tx_ring->itr_val, | |
714 | adapter->total_tx_packets, | |
715 | adapter->total_tx_bytes); | |
716 | ||
717 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
718 | if (adapter->requested_itr == 3 && | |
719 | adapter->tx_ring->itr_range == lowest_latency) | |
720 | adapter->tx_ring->itr_range = low_latency; | |
d4e0fe01 | 721 | |
ab50a2a4 MW |
722 | new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range); |
723 | ||
724 | ||
725 | if (new_itr != adapter->tx_ring->itr_val) { | |
726 | u32 current_itr = adapter->tx_ring->itr_val; | |
d4e0fe01 AD |
727 | /* |
728 | * this attempts to bias the interrupt rate towards Bulk | |
729 | * by adding intermediate steps when interrupt rate is | |
730 | * increasing | |
731 | */ | |
ab50a2a4 MW |
732 | new_itr = new_itr > current_itr ? |
733 | min(current_itr + (new_itr >> 2), new_itr) : | |
734 | new_itr; | |
735 | adapter->tx_ring->itr_val = new_itr; | |
736 | ||
737 | adapter->tx_ring->set_itr = 1; | |
738 | } | |
739 | ||
740 | adapter->rx_ring->itr_range = | |
741 | igbvf_update_itr(adapter, adapter->rx_ring->itr_val, | |
742 | adapter->total_rx_packets, | |
743 | adapter->total_rx_bytes); | |
744 | if (adapter->requested_itr == 3 && | |
745 | adapter->rx_ring->itr_range == lowest_latency) | |
746 | adapter->rx_ring->itr_range = low_latency; | |
747 | ||
748 | new_itr = igbvf_range_to_itr(adapter->rx_ring->itr_range); | |
749 | ||
750 | if (new_itr != adapter->rx_ring->itr_val) { | |
751 | u32 current_itr = adapter->rx_ring->itr_val; | |
752 | new_itr = new_itr > current_itr ? | |
753 | min(current_itr + (new_itr >> 2), new_itr) : | |
754 | new_itr; | |
755 | adapter->rx_ring->itr_val = new_itr; | |
756 | ||
757 | adapter->rx_ring->set_itr = 1; | |
d4e0fe01 AD |
758 | } |
759 | } | |
760 | ||
761 | /** | |
762 | * igbvf_clean_tx_irq - Reclaim resources after transmit completes | |
763 | * @adapter: board private structure | |
764 | * returns true if ring is completely cleaned | |
765 | **/ | |
766 | static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring) | |
767 | { | |
768 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
d4e0fe01 AD |
769 | struct net_device *netdev = adapter->netdev; |
770 | struct igbvf_buffer *buffer_info; | |
771 | struct sk_buff *skb; | |
772 | union e1000_adv_tx_desc *tx_desc, *eop_desc; | |
773 | unsigned int total_bytes = 0, total_packets = 0; | |
774 | unsigned int i, eop, count = 0; | |
775 | bool cleaned = false; | |
776 | ||
777 | i = tx_ring->next_to_clean; | |
778 | eop = tx_ring->buffer_info[i].next_to_watch; | |
779 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
780 | ||
781 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
782 | (count < tx_ring->count)) { | |
2d0bb1c1 | 783 | rmb(); /* read buffer_info after eop_desc status */ |
d4e0fe01 AD |
784 | for (cleaned = false; !cleaned; count++) { |
785 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
786 | buffer_info = &tx_ring->buffer_info[i]; | |
787 | cleaned = (i == eop); | |
788 | skb = buffer_info->skb; | |
789 | ||
790 | if (skb) { | |
791 | unsigned int segs, bytecount; | |
792 | ||
793 | /* gso_segs is currently only valid for tcp */ | |
794 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
795 | /* multiply data chunks by size of headers */ | |
796 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
797 | skb->len; | |
798 | total_packets += segs; | |
799 | total_bytes += bytecount; | |
800 | } | |
801 | ||
802 | igbvf_put_txbuf(adapter, buffer_info); | |
803 | tx_desc->wb.status = 0; | |
804 | ||
805 | i++; | |
806 | if (i == tx_ring->count) | |
807 | i = 0; | |
808 | } | |
809 | eop = tx_ring->buffer_info[i].next_to_watch; | |
810 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
811 | } | |
812 | ||
813 | tx_ring->next_to_clean = i; | |
814 | ||
815 | if (unlikely(count && | |
816 | netif_carrier_ok(netdev) && | |
817 | igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) { | |
818 | /* Make sure that anybody stopping the queue after this | |
819 | * sees the new next_to_clean. | |
820 | */ | |
821 | smp_mb(); | |
822 | if (netif_queue_stopped(netdev) && | |
823 | !(test_bit(__IGBVF_DOWN, &adapter->state))) { | |
824 | netif_wake_queue(netdev); | |
825 | ++adapter->restart_queue; | |
826 | } | |
827 | } | |
828 | ||
d4e0fe01 AD |
829 | adapter->net_stats.tx_bytes += total_bytes; |
830 | adapter->net_stats.tx_packets += total_packets; | |
807540ba | 831 | return count < tx_ring->count; |
d4e0fe01 AD |
832 | } |
833 | ||
834 | static irqreturn_t igbvf_msix_other(int irq, void *data) | |
835 | { | |
836 | struct net_device *netdev = data; | |
837 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
838 | struct e1000_hw *hw = &adapter->hw; | |
839 | ||
840 | adapter->int_counter1++; | |
841 | ||
842 | netif_carrier_off(netdev); | |
843 | hw->mac.get_link_status = 1; | |
844 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
845 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
846 | ||
847 | ew32(EIMS, adapter->eims_other); | |
848 | ||
849 | return IRQ_HANDLED; | |
850 | } | |
851 | ||
852 | static irqreturn_t igbvf_intr_msix_tx(int irq, void *data) | |
853 | { | |
854 | struct net_device *netdev = data; | |
855 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
856 | struct e1000_hw *hw = &adapter->hw; | |
857 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
858 | ||
ab50a2a4 MW |
859 | if (tx_ring->set_itr) { |
860 | writel(tx_ring->itr_val, | |
861 | adapter->hw.hw_addr + tx_ring->itr_register); | |
862 | adapter->tx_ring->set_itr = 0; | |
863 | } | |
d4e0fe01 AD |
864 | |
865 | adapter->total_tx_bytes = 0; | |
866 | adapter->total_tx_packets = 0; | |
867 | ||
868 | /* auto mask will automatically reenable the interrupt when we write | |
869 | * EICS */ | |
870 | if (!igbvf_clean_tx_irq(tx_ring)) | |
871 | /* Ring was not completely cleaned, so fire another interrupt */ | |
872 | ew32(EICS, tx_ring->eims_value); | |
873 | else | |
874 | ew32(EIMS, tx_ring->eims_value); | |
875 | ||
876 | return IRQ_HANDLED; | |
877 | } | |
878 | ||
879 | static irqreturn_t igbvf_intr_msix_rx(int irq, void *data) | |
880 | { | |
881 | struct net_device *netdev = data; | |
882 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
883 | ||
884 | adapter->int_counter0++; | |
885 | ||
886 | /* Write the ITR value calculated at the end of the | |
887 | * previous interrupt. | |
888 | */ | |
889 | if (adapter->rx_ring->set_itr) { | |
890 | writel(adapter->rx_ring->itr_val, | |
891 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
892 | adapter->rx_ring->set_itr = 0; | |
893 | } | |
894 | ||
895 | if (napi_schedule_prep(&adapter->rx_ring->napi)) { | |
896 | adapter->total_rx_bytes = 0; | |
897 | adapter->total_rx_packets = 0; | |
898 | __napi_schedule(&adapter->rx_ring->napi); | |
899 | } | |
900 | ||
901 | return IRQ_HANDLED; | |
902 | } | |
903 | ||
904 | #define IGBVF_NO_QUEUE -1 | |
905 | ||
906 | static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue, | |
907 | int tx_queue, int msix_vector) | |
908 | { | |
909 | struct e1000_hw *hw = &adapter->hw; | |
910 | u32 ivar, index; | |
911 | ||
912 | /* 82576 uses a table-based method for assigning vectors. | |
913 | Each queue has a single entry in the table to which we write | |
914 | a vector number along with a "valid" bit. Sadly, the layout | |
915 | of the table is somewhat counterintuitive. */ | |
916 | if (rx_queue > IGBVF_NO_QUEUE) { | |
917 | index = (rx_queue >> 1); | |
918 | ivar = array_er32(IVAR0, index); | |
919 | if (rx_queue & 0x1) { | |
920 | /* vector goes into third byte of register */ | |
921 | ivar = ivar & 0xFF00FFFF; | |
922 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
923 | } else { | |
924 | /* vector goes into low byte of register */ | |
925 | ivar = ivar & 0xFFFFFF00; | |
926 | ivar |= msix_vector | E1000_IVAR_VALID; | |
927 | } | |
928 | adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector; | |
929 | array_ew32(IVAR0, index, ivar); | |
930 | } | |
931 | if (tx_queue > IGBVF_NO_QUEUE) { | |
932 | index = (tx_queue >> 1); | |
933 | ivar = array_er32(IVAR0, index); | |
934 | if (tx_queue & 0x1) { | |
935 | /* vector goes into high byte of register */ | |
936 | ivar = ivar & 0x00FFFFFF; | |
937 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
938 | } else { | |
939 | /* vector goes into second byte of register */ | |
940 | ivar = ivar & 0xFFFF00FF; | |
941 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
942 | } | |
943 | adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector; | |
944 | array_ew32(IVAR0, index, ivar); | |
945 | } | |
946 | } | |
947 | ||
948 | /** | |
949 | * igbvf_configure_msix - Configure MSI-X hardware | |
950 | * | |
951 | * igbvf_configure_msix sets up the hardware to properly | |
952 | * generate MSI-X interrupts. | |
953 | **/ | |
954 | static void igbvf_configure_msix(struct igbvf_adapter *adapter) | |
955 | { | |
956 | u32 tmp; | |
957 | struct e1000_hw *hw = &adapter->hw; | |
958 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
959 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
960 | int vector = 0; | |
961 | ||
962 | adapter->eims_enable_mask = 0; | |
963 | ||
964 | igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++); | |
965 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
ab50a2a4 | 966 | writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register); |
d4e0fe01 AD |
967 | igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++); |
968 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
ab50a2a4 | 969 | writel(rx_ring->itr_val, hw->hw_addr + rx_ring->itr_register); |
d4e0fe01 AD |
970 | |
971 | /* set vector for other causes, i.e. link changes */ | |
972 | ||
973 | tmp = (vector++ | E1000_IVAR_VALID); | |
974 | ||
975 | ew32(IVAR_MISC, tmp); | |
976 | ||
977 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
978 | adapter->eims_other = 1 << (vector - 1); | |
979 | e1e_flush(); | |
980 | } | |
981 | ||
2d165771 | 982 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
983 | { |
984 | if (adapter->msix_entries) { | |
985 | pci_disable_msix(adapter->pdev); | |
986 | kfree(adapter->msix_entries); | |
987 | adapter->msix_entries = NULL; | |
988 | } | |
989 | } | |
990 | ||
991 | /** | |
992 | * igbvf_set_interrupt_capability - set MSI or MSI-X if supported | |
993 | * | |
994 | * Attempt to configure interrupts using the best available | |
995 | * capabilities of the hardware and kernel. | |
996 | **/ | |
2d165771 | 997 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
998 | { |
999 | int err = -ENOMEM; | |
1000 | int i; | |
1001 | ||
1002 | /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */ | |
1003 | adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry), | |
1004 | GFP_KERNEL); | |
1005 | if (adapter->msix_entries) { | |
1006 | for (i = 0; i < 3; i++) | |
1007 | adapter->msix_entries[i].entry = i; | |
1008 | ||
1009 | err = pci_enable_msix(adapter->pdev, | |
1010 | adapter->msix_entries, 3); | |
1011 | } | |
1012 | ||
1013 | if (err) { | |
1014 | /* MSI-X failed */ | |
1015 | dev_err(&adapter->pdev->dev, | |
1016 | "Failed to initialize MSI-X interrupts.\n"); | |
1017 | igbvf_reset_interrupt_capability(adapter); | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | /** | |
1022 | * igbvf_request_msix - Initialize MSI-X interrupts | |
1023 | * | |
1024 | * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the | |
1025 | * kernel. | |
1026 | **/ | |
1027 | static int igbvf_request_msix(struct igbvf_adapter *adapter) | |
1028 | { | |
1029 | struct net_device *netdev = adapter->netdev; | |
1030 | int err = 0, vector = 0; | |
1031 | ||
1032 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) { | |
1033 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); | |
1034 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); | |
1035 | } else { | |
1036 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1037 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1038 | } | |
1039 | ||
1040 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1041 | igbvf_intr_msix_tx, 0, adapter->tx_ring->name, |
d4e0fe01 AD |
1042 | netdev); |
1043 | if (err) | |
1044 | goto out; | |
1045 | ||
1046 | adapter->tx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1047 | adapter->tx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1048 | vector++; |
1049 | ||
1050 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1051 | igbvf_intr_msix_rx, 0, adapter->rx_ring->name, |
d4e0fe01 AD |
1052 | netdev); |
1053 | if (err) | |
1054 | goto out; | |
1055 | ||
1056 | adapter->rx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1057 | adapter->rx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1058 | vector++; |
1059 | ||
1060 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1061 | igbvf_msix_other, 0, netdev->name, netdev); |
d4e0fe01 AD |
1062 | if (err) |
1063 | goto out; | |
1064 | ||
1065 | igbvf_configure_msix(adapter); | |
1066 | return 0; | |
1067 | out: | |
1068 | return err; | |
1069 | } | |
1070 | ||
1071 | /** | |
1072 | * igbvf_alloc_queues - Allocate memory for all rings | |
1073 | * @adapter: board private structure to initialize | |
1074 | **/ | |
1075 | static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter) | |
1076 | { | |
1077 | struct net_device *netdev = adapter->netdev; | |
1078 | ||
1079 | adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1080 | if (!adapter->tx_ring) | |
1081 | return -ENOMEM; | |
1082 | ||
1083 | adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1084 | if (!adapter->rx_ring) { | |
1085 | kfree(adapter->tx_ring); | |
1086 | return -ENOMEM; | |
1087 | } | |
1088 | ||
1089 | netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64); | |
1090 | ||
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | /** | |
1095 | * igbvf_request_irq - initialize interrupts | |
1096 | * | |
1097 | * Attempts to configure interrupts using the best available | |
1098 | * capabilities of the hardware and kernel. | |
1099 | **/ | |
1100 | static int igbvf_request_irq(struct igbvf_adapter *adapter) | |
1101 | { | |
1102 | int err = -1; | |
1103 | ||
1104 | /* igbvf supports msi-x only */ | |
1105 | if (adapter->msix_entries) | |
1106 | err = igbvf_request_msix(adapter); | |
1107 | ||
1108 | if (!err) | |
1109 | return err; | |
1110 | ||
1111 | dev_err(&adapter->pdev->dev, | |
1112 | "Unable to allocate interrupt, Error: %d\n", err); | |
1113 | ||
1114 | return err; | |
1115 | } | |
1116 | ||
1117 | static void igbvf_free_irq(struct igbvf_adapter *adapter) | |
1118 | { | |
1119 | struct net_device *netdev = adapter->netdev; | |
1120 | int vector; | |
1121 | ||
1122 | if (adapter->msix_entries) { | |
1123 | for (vector = 0; vector < 3; vector++) | |
1124 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | /** | |
1129 | * igbvf_irq_disable - Mask off interrupt generation on the NIC | |
1130 | **/ | |
1131 | static void igbvf_irq_disable(struct igbvf_adapter *adapter) | |
1132 | { | |
1133 | struct e1000_hw *hw = &adapter->hw; | |
1134 | ||
1135 | ew32(EIMC, ~0); | |
1136 | ||
1137 | if (adapter->msix_entries) | |
1138 | ew32(EIAC, 0); | |
1139 | } | |
1140 | ||
1141 | /** | |
1142 | * igbvf_irq_enable - Enable default interrupt generation settings | |
1143 | **/ | |
1144 | static void igbvf_irq_enable(struct igbvf_adapter *adapter) | |
1145 | { | |
1146 | struct e1000_hw *hw = &adapter->hw; | |
1147 | ||
1148 | ew32(EIAC, adapter->eims_enable_mask); | |
1149 | ew32(EIAM, adapter->eims_enable_mask); | |
1150 | ew32(EIMS, adapter->eims_enable_mask); | |
1151 | } | |
1152 | ||
1153 | /** | |
1154 | * igbvf_poll - NAPI Rx polling callback | |
1155 | * @napi: struct associated with this polling callback | |
1156 | * @budget: amount of packets driver is allowed to process this poll | |
1157 | **/ | |
1158 | static int igbvf_poll(struct napi_struct *napi, int budget) | |
1159 | { | |
1160 | struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi); | |
1161 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
1162 | struct e1000_hw *hw = &adapter->hw; | |
1163 | int work_done = 0; | |
1164 | ||
1165 | igbvf_clean_rx_irq(adapter, &work_done, budget); | |
1166 | ||
1167 | /* If not enough Rx work done, exit the polling mode */ | |
1168 | if (work_done < budget) { | |
1169 | napi_complete(napi); | |
1170 | ||
ab50a2a4 | 1171 | if (adapter->requested_itr & 3) |
d4e0fe01 AD |
1172 | igbvf_set_itr(adapter); |
1173 | ||
1174 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1175 | ew32(EIMS, adapter->rx_ring->eims_value); | |
1176 | } | |
1177 | ||
1178 | return work_done; | |
1179 | } | |
1180 | ||
1181 | /** | |
1182 | * igbvf_set_rlpml - set receive large packet maximum length | |
1183 | * @adapter: board private structure | |
1184 | * | |
1185 | * Configure the maximum size of packets that will be received | |
1186 | */ | |
1187 | static void igbvf_set_rlpml(struct igbvf_adapter *adapter) | |
1188 | { | |
a0f1d603 | 1189 | int max_frame_size; |
d4e0fe01 AD |
1190 | struct e1000_hw *hw = &adapter->hw; |
1191 | ||
a0f1d603 | 1192 | max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE; |
d4e0fe01 AD |
1193 | e1000_rlpml_set_vf(hw, max_frame_size); |
1194 | } | |
1195 | ||
8e586137 | 1196 | static int igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
d4e0fe01 AD |
1197 | { |
1198 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1199 | struct e1000_hw *hw = &adapter->hw; | |
1200 | ||
8e586137 | 1201 | if (hw->mac.ops.set_vfta(hw, vid, true)) { |
d4e0fe01 | 1202 | dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid); |
8e586137 JP |
1203 | return -EINVAL; |
1204 | } | |
1205 | set_bit(vid, adapter->active_vlans); | |
1206 | return 0; | |
d4e0fe01 AD |
1207 | } |
1208 | ||
8e586137 | 1209 | static int igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
d4e0fe01 AD |
1210 | { |
1211 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1212 | struct e1000_hw *hw = &adapter->hw; | |
1213 | ||
8e586137 | 1214 | if (hw->mac.ops.set_vfta(hw, vid, false)) { |
d4e0fe01 AD |
1215 | dev_err(&adapter->pdev->dev, |
1216 | "Failed to remove vlan id %d\n", vid); | |
8e586137 JP |
1217 | return -EINVAL; |
1218 | } | |
1219 | clear_bit(vid, adapter->active_vlans); | |
1220 | return 0; | |
d4e0fe01 AD |
1221 | } |
1222 | ||
1223 | static void igbvf_restore_vlan(struct igbvf_adapter *adapter) | |
1224 | { | |
1225 | u16 vid; | |
1226 | ||
a0f1d603 | 1227 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
d4e0fe01 | 1228 | igbvf_vlan_rx_add_vid(adapter->netdev, vid); |
d4e0fe01 AD |
1229 | } |
1230 | ||
1231 | /** | |
1232 | * igbvf_configure_tx - Configure Transmit Unit after Reset | |
1233 | * @adapter: board private structure | |
1234 | * | |
1235 | * Configure the Tx unit of the MAC after a reset. | |
1236 | **/ | |
1237 | static void igbvf_configure_tx(struct igbvf_adapter *adapter) | |
1238 | { | |
1239 | struct e1000_hw *hw = &adapter->hw; | |
1240 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1241 | u64 tdba; | |
1242 | u32 txdctl, dca_txctrl; | |
1243 | ||
1244 | /* disable transmits */ | |
1245 | txdctl = er32(TXDCTL(0)); | |
1246 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
945a5151 | 1247 | e1e_flush(); |
d4e0fe01 AD |
1248 | msleep(10); |
1249 | ||
1250 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1251 | ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc)); | |
1252 | tdba = tx_ring->dma; | |
8e20ce94 | 1253 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1254 | ew32(TDBAH(0), (tdba >> 32)); |
1255 | ew32(TDH(0), 0); | |
1256 | ew32(TDT(0), 0); | |
1257 | tx_ring->head = E1000_TDH(0); | |
1258 | tx_ring->tail = E1000_TDT(0); | |
1259 | ||
1260 | /* Turn off Relaxed Ordering on head write-backs. The writebacks | |
1261 | * MUST be delivered in order or it will completely screw up | |
1262 | * our bookeeping. | |
1263 | */ | |
1264 | dca_txctrl = er32(DCA_TXCTRL(0)); | |
1265 | dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; | |
1266 | ew32(DCA_TXCTRL(0), dca_txctrl); | |
1267 | ||
1268 | /* enable transmits */ | |
1269 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
1270 | ew32(TXDCTL(0), txdctl); | |
1271 | ||
1272 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1273 | adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS; | |
1274 | ||
1275 | /* enable Report Status bit */ | |
1276 | adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS; | |
d4e0fe01 AD |
1277 | } |
1278 | ||
1279 | /** | |
1280 | * igbvf_setup_srrctl - configure the receive control registers | |
1281 | * @adapter: Board private structure | |
1282 | **/ | |
1283 | static void igbvf_setup_srrctl(struct igbvf_adapter *adapter) | |
1284 | { | |
1285 | struct e1000_hw *hw = &adapter->hw; | |
1286 | u32 srrctl = 0; | |
1287 | ||
1288 | srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK | | |
1289 | E1000_SRRCTL_BSIZEHDR_MASK | | |
1290 | E1000_SRRCTL_BSIZEPKT_MASK); | |
1291 | ||
1292 | /* Enable queue drop to avoid head of line blocking */ | |
1293 | srrctl |= E1000_SRRCTL_DROP_EN; | |
1294 | ||
1295 | /* Setup buffer sizes */ | |
1296 | srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >> | |
1297 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1298 | ||
1299 | if (adapter->rx_buffer_len < 2048) { | |
1300 | adapter->rx_ps_hdr_size = 0; | |
1301 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1302 | } else { | |
1303 | adapter->rx_ps_hdr_size = 128; | |
1304 | srrctl |= adapter->rx_ps_hdr_size << | |
1305 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; | |
1306 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1307 | } | |
1308 | ||
1309 | ew32(SRRCTL(0), srrctl); | |
1310 | } | |
1311 | ||
1312 | /** | |
1313 | * igbvf_configure_rx - Configure Receive Unit after Reset | |
1314 | * @adapter: board private structure | |
1315 | * | |
1316 | * Configure the Rx unit of the MAC after a reset. | |
1317 | **/ | |
1318 | static void igbvf_configure_rx(struct igbvf_adapter *adapter) | |
1319 | { | |
1320 | struct e1000_hw *hw = &adapter->hw; | |
1321 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
1322 | u64 rdba; | |
1323 | u32 rdlen, rxdctl; | |
1324 | ||
1325 | /* disable receives */ | |
1326 | rxdctl = er32(RXDCTL(0)); | |
1327 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
945a5151 | 1328 | e1e_flush(); |
d4e0fe01 AD |
1329 | msleep(10); |
1330 | ||
1331 | rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc); | |
1332 | ||
1333 | /* | |
1334 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
1335 | * the Base and Length of the Rx Descriptor Ring | |
1336 | */ | |
1337 | rdba = rx_ring->dma; | |
8e20ce94 | 1338 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1339 | ew32(RDBAH(0), (rdba >> 32)); |
1340 | ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc)); | |
1341 | rx_ring->head = E1000_RDH(0); | |
1342 | rx_ring->tail = E1000_RDT(0); | |
1343 | ew32(RDH(0), 0); | |
1344 | ew32(RDT(0), 0); | |
1345 | ||
1346 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
1347 | rxdctl &= 0xFFF00000; | |
1348 | rxdctl |= IGBVF_RX_PTHRESH; | |
1349 | rxdctl |= IGBVF_RX_HTHRESH << 8; | |
1350 | rxdctl |= IGBVF_RX_WTHRESH << 16; | |
1351 | ||
1352 | igbvf_set_rlpml(adapter); | |
1353 | ||
1354 | /* enable receives */ | |
1355 | ew32(RXDCTL(0), rxdctl); | |
1356 | } | |
1357 | ||
1358 | /** | |
1359 | * igbvf_set_multi - Multicast and Promiscuous mode set | |
1360 | * @netdev: network interface device structure | |
1361 | * | |
1362 | * The set_multi entry point is called whenever the multicast address | |
1363 | * list or the network interface flags are updated. This routine is | |
1364 | * responsible for configuring the hardware for proper multicast, | |
1365 | * promiscuous mode, and all-multi behavior. | |
1366 | **/ | |
1367 | static void igbvf_set_multi(struct net_device *netdev) | |
1368 | { | |
1369 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1370 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 1371 | struct netdev_hw_addr *ha; |
d4e0fe01 AD |
1372 | u8 *mta_list = NULL; |
1373 | int i; | |
1374 | ||
4cd24eaf JP |
1375 | if (!netdev_mc_empty(netdev)) { |
1376 | mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); | |
d4e0fe01 AD |
1377 | if (!mta_list) { |
1378 | dev_err(&adapter->pdev->dev, | |
1379 | "failed to allocate multicast filter list\n"); | |
1380 | return; | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | /* prepare a packed array of only addresses. */ | |
48e2f183 | 1385 | i = 0; |
22bedad3 JP |
1386 | netdev_for_each_mc_addr(ha, netdev) |
1387 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
d4e0fe01 AD |
1388 | |
1389 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0); | |
1390 | kfree(mta_list); | |
1391 | } | |
1392 | ||
1393 | /** | |
1394 | * igbvf_configure - configure the hardware for Rx and Tx | |
1395 | * @adapter: private board structure | |
1396 | **/ | |
1397 | static void igbvf_configure(struct igbvf_adapter *adapter) | |
1398 | { | |
1399 | igbvf_set_multi(adapter->netdev); | |
1400 | ||
1401 | igbvf_restore_vlan(adapter); | |
1402 | ||
1403 | igbvf_configure_tx(adapter); | |
1404 | igbvf_setup_srrctl(adapter); | |
1405 | igbvf_configure_rx(adapter); | |
1406 | igbvf_alloc_rx_buffers(adapter->rx_ring, | |
1407 | igbvf_desc_unused(adapter->rx_ring)); | |
1408 | } | |
1409 | ||
1410 | /* igbvf_reset - bring the hardware into a known good state | |
1411 | * | |
1412 | * This function boots the hardware and enables some settings that | |
1413 | * require a configuration cycle of the hardware - those cannot be | |
1414 | * set/changed during runtime. After reset the device needs to be | |
1415 | * properly configured for Rx, Tx etc. | |
1416 | */ | |
2d165771 | 1417 | static void igbvf_reset(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1418 | { |
1419 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1420 | struct net_device *netdev = adapter->netdev; | |
1421 | struct e1000_hw *hw = &adapter->hw; | |
1422 | ||
1423 | /* Allow time for pending master requests to run */ | |
1424 | if (mac->ops.reset_hw(hw)) | |
1425 | dev_err(&adapter->pdev->dev, "PF still resetting\n"); | |
1426 | ||
1427 | mac->ops.init_hw(hw); | |
1428 | ||
1429 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1430 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1431 | netdev->addr_len); | |
1432 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1433 | netdev->addr_len); | |
1434 | } | |
72279093 AD |
1435 | |
1436 | adapter->last_reset = jiffies; | |
d4e0fe01 AD |
1437 | } |
1438 | ||
1439 | int igbvf_up(struct igbvf_adapter *adapter) | |
1440 | { | |
1441 | struct e1000_hw *hw = &adapter->hw; | |
1442 | ||
1443 | /* hardware has been reset, we need to reload some things */ | |
1444 | igbvf_configure(adapter); | |
1445 | ||
1446 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1447 | ||
1448 | napi_enable(&adapter->rx_ring->napi); | |
1449 | if (adapter->msix_entries) | |
1450 | igbvf_configure_msix(adapter); | |
1451 | ||
1452 | /* Clear any pending interrupts. */ | |
1453 | er32(EICR); | |
1454 | igbvf_irq_enable(adapter); | |
1455 | ||
1456 | /* start the watchdog */ | |
1457 | hw->mac.get_link_status = 1; | |
1458 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1459 | ||
1460 | ||
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | void igbvf_down(struct igbvf_adapter *adapter) | |
1465 | { | |
1466 | struct net_device *netdev = adapter->netdev; | |
1467 | struct e1000_hw *hw = &adapter->hw; | |
1468 | u32 rxdctl, txdctl; | |
1469 | ||
1470 | /* | |
1471 | * signal that we're down so the interrupt handler does not | |
1472 | * reschedule our watchdog timer | |
1473 | */ | |
1474 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1475 | ||
1476 | /* disable receives in the hardware */ | |
1477 | rxdctl = er32(RXDCTL(0)); | |
1478 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1479 | ||
1480 | netif_stop_queue(netdev); | |
1481 | ||
1482 | /* disable transmits in the hardware */ | |
1483 | txdctl = er32(TXDCTL(0)); | |
1484 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1485 | ||
1486 | /* flush both disables and wait for them to finish */ | |
1487 | e1e_flush(); | |
1488 | msleep(10); | |
1489 | ||
1490 | napi_disable(&adapter->rx_ring->napi); | |
1491 | ||
1492 | igbvf_irq_disable(adapter); | |
1493 | ||
1494 | del_timer_sync(&adapter->watchdog_timer); | |
1495 | ||
d4e0fe01 AD |
1496 | netif_carrier_off(netdev); |
1497 | ||
1498 | /* record the stats before reset*/ | |
1499 | igbvf_update_stats(adapter); | |
1500 | ||
1501 | adapter->link_speed = 0; | |
1502 | adapter->link_duplex = 0; | |
1503 | ||
1504 | igbvf_reset(adapter); | |
1505 | igbvf_clean_tx_ring(adapter->tx_ring); | |
1506 | igbvf_clean_rx_ring(adapter->rx_ring); | |
1507 | } | |
1508 | ||
1509 | void igbvf_reinit_locked(struct igbvf_adapter *adapter) | |
1510 | { | |
1511 | might_sleep(); | |
1512 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
1513 | msleep(1); | |
1514 | igbvf_down(adapter); | |
1515 | igbvf_up(adapter); | |
1516 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
1517 | } | |
1518 | ||
1519 | /** | |
1520 | * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter) | |
1521 | * @adapter: board private structure to initialize | |
1522 | * | |
1523 | * igbvf_sw_init initializes the Adapter private data structure. | |
1524 | * Fields are initialized based on PCI device information and | |
1525 | * OS network device settings (MTU size). | |
1526 | **/ | |
1527 | static int __devinit igbvf_sw_init(struct igbvf_adapter *adapter) | |
1528 | { | |
1529 | struct net_device *netdev = adapter->netdev; | |
1530 | s32 rc; | |
1531 | ||
1532 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
1533 | adapter->rx_ps_hdr_size = 0; | |
1534 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1535 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1536 | ||
1537 | adapter->tx_int_delay = 8; | |
1538 | adapter->tx_abs_int_delay = 32; | |
1539 | adapter->rx_int_delay = 0; | |
1540 | adapter->rx_abs_int_delay = 8; | |
ab50a2a4 MW |
1541 | adapter->requested_itr = 3; |
1542 | adapter->current_itr = IGBVF_START_ITR; | |
d4e0fe01 AD |
1543 | |
1544 | /* Set various function pointers */ | |
1545 | adapter->ei->init_ops(&adapter->hw); | |
1546 | ||
1547 | rc = adapter->hw.mac.ops.init_params(&adapter->hw); | |
1548 | if (rc) | |
1549 | return rc; | |
1550 | ||
1551 | rc = adapter->hw.mbx.ops.init_params(&adapter->hw); | |
1552 | if (rc) | |
1553 | return rc; | |
1554 | ||
1555 | igbvf_set_interrupt_capability(adapter); | |
1556 | ||
1557 | if (igbvf_alloc_queues(adapter)) | |
1558 | return -ENOMEM; | |
1559 | ||
1560 | spin_lock_init(&adapter->tx_queue_lock); | |
1561 | ||
1562 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1563 | igbvf_irq_disable(adapter); | |
1564 | ||
1565 | spin_lock_init(&adapter->stats_lock); | |
1566 | ||
1567 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter) | |
1572 | { | |
1573 | struct e1000_hw *hw = &adapter->hw; | |
1574 | ||
1575 | adapter->stats.last_gprc = er32(VFGPRC); | |
1576 | adapter->stats.last_gorc = er32(VFGORC); | |
1577 | adapter->stats.last_gptc = er32(VFGPTC); | |
1578 | adapter->stats.last_gotc = er32(VFGOTC); | |
1579 | adapter->stats.last_mprc = er32(VFMPRC); | |
1580 | adapter->stats.last_gotlbc = er32(VFGOTLBC); | |
1581 | adapter->stats.last_gptlbc = er32(VFGPTLBC); | |
1582 | adapter->stats.last_gorlbc = er32(VFGORLBC); | |
1583 | adapter->stats.last_gprlbc = er32(VFGPRLBC); | |
1584 | ||
1585 | adapter->stats.base_gprc = er32(VFGPRC); | |
1586 | adapter->stats.base_gorc = er32(VFGORC); | |
1587 | adapter->stats.base_gptc = er32(VFGPTC); | |
1588 | adapter->stats.base_gotc = er32(VFGOTC); | |
1589 | adapter->stats.base_mprc = er32(VFMPRC); | |
1590 | adapter->stats.base_gotlbc = er32(VFGOTLBC); | |
1591 | adapter->stats.base_gptlbc = er32(VFGPTLBC); | |
1592 | adapter->stats.base_gorlbc = er32(VFGORLBC); | |
1593 | adapter->stats.base_gprlbc = er32(VFGPRLBC); | |
1594 | } | |
1595 | ||
1596 | /** | |
1597 | * igbvf_open - Called when a network interface is made active | |
1598 | * @netdev: network interface device structure | |
1599 | * | |
1600 | * Returns 0 on success, negative value on failure | |
1601 | * | |
1602 | * The open entry point is called when a network interface is made | |
1603 | * active by the system (IFF_UP). At this point all resources needed | |
1604 | * for transmit and receive operations are allocated, the interrupt | |
1605 | * handler is registered with the OS, the watchdog timer is started, | |
1606 | * and the stack is notified that the interface is ready. | |
1607 | **/ | |
1608 | static int igbvf_open(struct net_device *netdev) | |
1609 | { | |
1610 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1611 | struct e1000_hw *hw = &adapter->hw; | |
1612 | int err; | |
1613 | ||
1614 | /* disallow open during test */ | |
1615 | if (test_bit(__IGBVF_TESTING, &adapter->state)) | |
1616 | return -EBUSY; | |
1617 | ||
1618 | /* allocate transmit descriptors */ | |
1619 | err = igbvf_setup_tx_resources(adapter, adapter->tx_ring); | |
1620 | if (err) | |
1621 | goto err_setup_tx; | |
1622 | ||
1623 | /* allocate receive descriptors */ | |
1624 | err = igbvf_setup_rx_resources(adapter, adapter->rx_ring); | |
1625 | if (err) | |
1626 | goto err_setup_rx; | |
1627 | ||
1628 | /* | |
1629 | * before we allocate an interrupt, we must be ready to handle it. | |
1630 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1631 | * as soon as we call pci_request_irq, so we have to setup our | |
1632 | * clean_rx handler before we do so. | |
1633 | */ | |
1634 | igbvf_configure(adapter); | |
1635 | ||
1636 | err = igbvf_request_irq(adapter); | |
1637 | if (err) | |
1638 | goto err_req_irq; | |
1639 | ||
1640 | /* From here on the code is the same as igbvf_up() */ | |
1641 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1642 | ||
1643 | napi_enable(&adapter->rx_ring->napi); | |
1644 | ||
1645 | /* clear any pending interrupts */ | |
1646 | er32(EICR); | |
1647 | ||
1648 | igbvf_irq_enable(adapter); | |
1649 | ||
1650 | /* start the watchdog */ | |
1651 | hw->mac.get_link_status = 1; | |
1652 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1653 | ||
1654 | return 0; | |
1655 | ||
1656 | err_req_irq: | |
1657 | igbvf_free_rx_resources(adapter->rx_ring); | |
1658 | err_setup_rx: | |
1659 | igbvf_free_tx_resources(adapter->tx_ring); | |
1660 | err_setup_tx: | |
1661 | igbvf_reset(adapter); | |
1662 | ||
1663 | return err; | |
1664 | } | |
1665 | ||
1666 | /** | |
1667 | * igbvf_close - Disables a network interface | |
1668 | * @netdev: network interface device structure | |
1669 | * | |
1670 | * Returns 0, this is not allowed to fail | |
1671 | * | |
1672 | * The close entry point is called when an interface is de-activated | |
1673 | * by the OS. The hardware is still under the drivers control, but | |
1674 | * needs to be disabled. A global MAC reset is issued to stop the | |
1675 | * hardware, and all transmit and receive resources are freed. | |
1676 | **/ | |
1677 | static int igbvf_close(struct net_device *netdev) | |
1678 | { | |
1679 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1680 | ||
1681 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
1682 | igbvf_down(adapter); | |
1683 | ||
1684 | igbvf_free_irq(adapter); | |
1685 | ||
1686 | igbvf_free_tx_resources(adapter->tx_ring); | |
1687 | igbvf_free_rx_resources(adapter->rx_ring); | |
1688 | ||
1689 | return 0; | |
1690 | } | |
1691 | /** | |
1692 | * igbvf_set_mac - Change the Ethernet Address of the NIC | |
1693 | * @netdev: network interface device structure | |
1694 | * @p: pointer to an address structure | |
1695 | * | |
1696 | * Returns 0 on success, negative on failure | |
1697 | **/ | |
1698 | static int igbvf_set_mac(struct net_device *netdev, void *p) | |
1699 | { | |
1700 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1701 | struct e1000_hw *hw = &adapter->hw; | |
1702 | struct sockaddr *addr = p; | |
1703 | ||
1704 | if (!is_valid_ether_addr(addr->sa_data)) | |
1705 | return -EADDRNOTAVAIL; | |
1706 | ||
1707 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
1708 | ||
1709 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); | |
1710 | ||
1711 | if (memcmp(addr->sa_data, hw->mac.addr, 6)) | |
1712 | return -EADDRNOTAVAIL; | |
1713 | ||
1714 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1715 | ||
1716 | return 0; | |
1717 | } | |
1718 | ||
1719 | #define UPDATE_VF_COUNTER(reg, name) \ | |
1720 | { \ | |
1721 | u32 current_counter = er32(reg); \ | |
1722 | if (current_counter < adapter->stats.last_##name) \ | |
1723 | adapter->stats.name += 0x100000000LL; \ | |
1724 | adapter->stats.last_##name = current_counter; \ | |
1725 | adapter->stats.name &= 0xFFFFFFFF00000000LL; \ | |
1726 | adapter->stats.name |= current_counter; \ | |
1727 | } | |
1728 | ||
1729 | /** | |
1730 | * igbvf_update_stats - Update the board statistics counters | |
1731 | * @adapter: board private structure | |
1732 | **/ | |
1733 | void igbvf_update_stats(struct igbvf_adapter *adapter) | |
1734 | { | |
1735 | struct e1000_hw *hw = &adapter->hw; | |
1736 | struct pci_dev *pdev = adapter->pdev; | |
1737 | ||
1738 | /* | |
1739 | * Prevent stats update while adapter is being reset, link is down | |
1740 | * or if the pci connection is down. | |
1741 | */ | |
1742 | if (adapter->link_speed == 0) | |
1743 | return; | |
1744 | ||
1745 | if (test_bit(__IGBVF_RESETTING, &adapter->state)) | |
1746 | return; | |
1747 | ||
1748 | if (pci_channel_offline(pdev)) | |
1749 | return; | |
1750 | ||
1751 | UPDATE_VF_COUNTER(VFGPRC, gprc); | |
1752 | UPDATE_VF_COUNTER(VFGORC, gorc); | |
1753 | UPDATE_VF_COUNTER(VFGPTC, gptc); | |
1754 | UPDATE_VF_COUNTER(VFGOTC, gotc); | |
1755 | UPDATE_VF_COUNTER(VFMPRC, mprc); | |
1756 | UPDATE_VF_COUNTER(VFGOTLBC, gotlbc); | |
1757 | UPDATE_VF_COUNTER(VFGPTLBC, gptlbc); | |
1758 | UPDATE_VF_COUNTER(VFGORLBC, gorlbc); | |
1759 | UPDATE_VF_COUNTER(VFGPRLBC, gprlbc); | |
1760 | ||
1761 | /* Fill out the OS statistics structure */ | |
1762 | adapter->net_stats.multicast = adapter->stats.mprc; | |
1763 | } | |
1764 | ||
1765 | static void igbvf_print_link_info(struct igbvf_adapter *adapter) | |
1766 | { | |
a4ba8cbe JK |
1767 | dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s Duplex\n", |
1768 | adapter->link_speed, | |
1769 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half"); | |
d4e0fe01 AD |
1770 | } |
1771 | ||
1772 | static bool igbvf_has_link(struct igbvf_adapter *adapter) | |
1773 | { | |
1774 | struct e1000_hw *hw = &adapter->hw; | |
1775 | s32 ret_val = E1000_SUCCESS; | |
1776 | bool link_active; | |
1777 | ||
72279093 AD |
1778 | /* If interface is down, stay link down */ |
1779 | if (test_bit(__IGBVF_DOWN, &adapter->state)) | |
1780 | return false; | |
1781 | ||
d4e0fe01 AD |
1782 | ret_val = hw->mac.ops.check_for_link(hw); |
1783 | link_active = !hw->mac.get_link_status; | |
1784 | ||
1785 | /* if check for link returns error we will need to reset */ | |
72279093 | 1786 | if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ))) |
d4e0fe01 AD |
1787 | schedule_work(&adapter->reset_task); |
1788 | ||
1789 | return link_active; | |
1790 | } | |
1791 | ||
1792 | /** | |
1793 | * igbvf_watchdog - Timer Call-back | |
1794 | * @data: pointer to adapter cast into an unsigned long | |
1795 | **/ | |
1796 | static void igbvf_watchdog(unsigned long data) | |
1797 | { | |
1798 | struct igbvf_adapter *adapter = (struct igbvf_adapter *) data; | |
1799 | ||
1800 | /* Do the rest outside of interrupt context */ | |
1801 | schedule_work(&adapter->watchdog_task); | |
1802 | } | |
1803 | ||
1804 | static void igbvf_watchdog_task(struct work_struct *work) | |
1805 | { | |
1806 | struct igbvf_adapter *adapter = container_of(work, | |
1807 | struct igbvf_adapter, | |
1808 | watchdog_task); | |
1809 | struct net_device *netdev = adapter->netdev; | |
1810 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1811 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1812 | struct e1000_hw *hw = &adapter->hw; | |
1813 | u32 link; | |
1814 | int tx_pending = 0; | |
1815 | ||
1816 | link = igbvf_has_link(adapter); | |
1817 | ||
1818 | if (link) { | |
1819 | if (!netif_carrier_ok(netdev)) { | |
d4e0fe01 AD |
1820 | mac->ops.get_link_up_info(&adapter->hw, |
1821 | &adapter->link_speed, | |
1822 | &adapter->link_duplex); | |
1823 | igbvf_print_link_info(adapter); | |
1824 | ||
d4e0fe01 AD |
1825 | netif_carrier_on(netdev); |
1826 | netif_wake_queue(netdev); | |
1827 | } | |
1828 | } else { | |
1829 | if (netif_carrier_ok(netdev)) { | |
1830 | adapter->link_speed = 0; | |
1831 | adapter->link_duplex = 0; | |
1832 | dev_info(&adapter->pdev->dev, "Link is Down\n"); | |
1833 | netif_carrier_off(netdev); | |
1834 | netif_stop_queue(netdev); | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | if (netif_carrier_ok(netdev)) { | |
1839 | igbvf_update_stats(adapter); | |
1840 | } else { | |
1841 | tx_pending = (igbvf_desc_unused(tx_ring) + 1 < | |
1842 | tx_ring->count); | |
1843 | if (tx_pending) { | |
1844 | /* | |
1845 | * We've lost link, so the controller stops DMA, | |
1846 | * but we've got queued Tx work that's never going | |
1847 | * to get done, so reset controller to flush Tx. | |
1848 | * (Do the reset outside of interrupt context). | |
1849 | */ | |
1850 | adapter->tx_timeout_count++; | |
1851 | schedule_work(&adapter->reset_task); | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | /* Cause software interrupt to ensure Rx ring is cleaned */ | |
1856 | ew32(EICS, adapter->rx_ring->eims_value); | |
1857 | ||
d4e0fe01 AD |
1858 | /* Reset the timer */ |
1859 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1860 | mod_timer(&adapter->watchdog_timer, | |
1861 | round_jiffies(jiffies + (2 * HZ))); | |
1862 | } | |
1863 | ||
1864 | #define IGBVF_TX_FLAGS_CSUM 0x00000001 | |
1865 | #define IGBVF_TX_FLAGS_VLAN 0x00000002 | |
1866 | #define IGBVF_TX_FLAGS_TSO 0x00000004 | |
1867 | #define IGBVF_TX_FLAGS_IPV4 0x00000008 | |
1868 | #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1869 | #define IGBVF_TX_FLAGS_VLAN_SHIFT 16 | |
1870 | ||
1871 | static int igbvf_tso(struct igbvf_adapter *adapter, | |
1872 | struct igbvf_ring *tx_ring, | |
1873 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
1874 | { | |
1875 | struct e1000_adv_tx_context_desc *context_desc; | |
1876 | unsigned int i; | |
1877 | int err; | |
1878 | struct igbvf_buffer *buffer_info; | |
1879 | u32 info = 0, tu_cmd = 0; | |
1880 | u32 mss_l4len_idx, l4len; | |
1881 | *hdr_len = 0; | |
1882 | ||
1883 | if (skb_header_cloned(skb)) { | |
1884 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1885 | if (err) { | |
1886 | dev_err(&adapter->pdev->dev, | |
1887 | "igbvf_tso returning an error\n"); | |
1888 | return err; | |
1889 | } | |
1890 | } | |
1891 | ||
1892 | l4len = tcp_hdrlen(skb); | |
1893 | *hdr_len += l4len; | |
1894 | ||
1895 | if (skb->protocol == htons(ETH_P_IP)) { | |
1896 | struct iphdr *iph = ip_hdr(skb); | |
1897 | iph->tot_len = 0; | |
1898 | iph->check = 0; | |
1899 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1900 | iph->daddr, 0, | |
1901 | IPPROTO_TCP, | |
1902 | 0); | |
8e1e8a47 | 1903 | } else if (skb_is_gso_v6(skb)) { |
d4e0fe01 AD |
1904 | ipv6_hdr(skb)->payload_len = 0; |
1905 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
1906 | &ipv6_hdr(skb)->daddr, | |
1907 | 0, IPPROTO_TCP, 0); | |
1908 | } | |
1909 | ||
1910 | i = tx_ring->next_to_use; | |
1911 | ||
1912 | buffer_info = &tx_ring->buffer_info[i]; | |
1913 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1914 | /* VLAN MACLEN IPLEN */ | |
1915 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1916 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1917 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1918 | *hdr_len += skb_network_offset(skb); | |
1919 | info |= (skb_transport_header(skb) - skb_network_header(skb)); | |
1920 | *hdr_len += (skb_transport_header(skb) - skb_network_header(skb)); | |
1921 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1922 | ||
1923 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
1924 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1925 | ||
1926 | if (skb->protocol == htons(ETH_P_IP)) | |
1927 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1928 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1929 | ||
1930 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
1931 | ||
1932 | /* MSS L4LEN IDX */ | |
1933 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
1934 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
1935 | ||
1936 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
1937 | context_desc->seqnum_seed = 0; | |
1938 | ||
1939 | buffer_info->time_stamp = jiffies; | |
1940 | buffer_info->next_to_watch = i; | |
1941 | buffer_info->dma = 0; | |
1942 | i++; | |
1943 | if (i == tx_ring->count) | |
1944 | i = 0; | |
1945 | ||
1946 | tx_ring->next_to_use = i; | |
1947 | ||
1948 | return true; | |
1949 | } | |
1950 | ||
1951 | static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter, | |
1952 | struct igbvf_ring *tx_ring, | |
1953 | struct sk_buff *skb, u32 tx_flags) | |
1954 | { | |
1955 | struct e1000_adv_tx_context_desc *context_desc; | |
1956 | unsigned int i; | |
1957 | struct igbvf_buffer *buffer_info; | |
1958 | u32 info = 0, tu_cmd = 0; | |
1959 | ||
1960 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
1961 | (tx_flags & IGBVF_TX_FLAGS_VLAN)) { | |
1962 | i = tx_ring->next_to_use; | |
1963 | buffer_info = &tx_ring->buffer_info[i]; | |
1964 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1965 | ||
1966 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1967 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1968 | ||
1969 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1970 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
1971 | info |= (skb_transport_header(skb) - | |
1972 | skb_network_header(skb)); | |
1973 | ||
1974 | ||
1975 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1976 | ||
1977 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1978 | ||
1979 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1980 | switch (skb->protocol) { | |
1981 | case __constant_htons(ETH_P_IP): | |
1982 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1983 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
1984 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1985 | break; | |
1986 | case __constant_htons(ETH_P_IPV6): | |
1987 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
1988 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1989 | break; | |
1990 | default: | |
1991 | break; | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
1996 | context_desc->seqnum_seed = 0; | |
1997 | context_desc->mss_l4len_idx = 0; | |
1998 | ||
1999 | buffer_info->time_stamp = jiffies; | |
2000 | buffer_info->next_to_watch = i; | |
2001 | buffer_info->dma = 0; | |
2002 | i++; | |
2003 | if (i == tx_ring->count) | |
2004 | i = 0; | |
2005 | tx_ring->next_to_use = i; | |
2006 | ||
2007 | return true; | |
2008 | } | |
2009 | ||
2010 | return false; | |
2011 | } | |
2012 | ||
2013 | static int igbvf_maybe_stop_tx(struct net_device *netdev, int size) | |
2014 | { | |
2015 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2016 | ||
2017 | /* there is enough descriptors then we don't need to worry */ | |
2018 | if (igbvf_desc_unused(adapter->tx_ring) >= size) | |
2019 | return 0; | |
2020 | ||
2021 | netif_stop_queue(netdev); | |
2022 | ||
2023 | smp_mb(); | |
2024 | ||
2025 | /* We need to check again just in case room has been made available */ | |
2026 | if (igbvf_desc_unused(adapter->tx_ring) < size) | |
2027 | return -EBUSY; | |
2028 | ||
2029 | netif_wake_queue(netdev); | |
2030 | ||
2031 | ++adapter->restart_queue; | |
2032 | return 0; | |
2033 | } | |
2034 | ||
2035 | #define IGBVF_MAX_TXD_PWR 16 | |
2036 | #define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR) | |
2037 | ||
2038 | static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, | |
2039 | struct igbvf_ring *tx_ring, | |
2040 | struct sk_buff *skb, | |
2041 | unsigned int first) | |
2042 | { | |
2043 | struct igbvf_buffer *buffer_info; | |
a7d5ca40 | 2044 | struct pci_dev *pdev = adapter->pdev; |
d4e0fe01 AD |
2045 | unsigned int len = skb_headlen(skb); |
2046 | unsigned int count = 0, i; | |
2047 | unsigned int f; | |
d4e0fe01 AD |
2048 | |
2049 | i = tx_ring->next_to_use; | |
2050 | ||
d4e0fe01 AD |
2051 | buffer_info = &tx_ring->buffer_info[i]; |
2052 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2053 | buffer_info->length = len; | |
2054 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2055 | buffer_info->time_stamp = jiffies; | |
2056 | buffer_info->next_to_watch = i; | |
ac26d7d6 | 2057 | buffer_info->mapped_as_page = false; |
123e9f1a NN |
2058 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len, |
2059 | DMA_TO_DEVICE); | |
2060 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 AD |
2061 | goto dma_error; |
2062 | ||
d4e0fe01 AD |
2063 | |
2064 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
9e903e08 | 2065 | const struct skb_frag_struct *frag; |
d4e0fe01 | 2066 | |
8581145f | 2067 | count++; |
d4e0fe01 AD |
2068 | i++; |
2069 | if (i == tx_ring->count) | |
2070 | i = 0; | |
2071 | ||
2072 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 2073 | len = skb_frag_size(frag); |
d4e0fe01 AD |
2074 | |
2075 | buffer_info = &tx_ring->buffer_info[i]; | |
2076 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2077 | buffer_info->length = len; | |
2078 | buffer_info->time_stamp = jiffies; | |
2079 | buffer_info->next_to_watch = i; | |
a7d5ca40 | 2080 | buffer_info->mapped_as_page = true; |
877749bf | 2081 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, 0, len, |
123e9f1a NN |
2082 | DMA_TO_DEVICE); |
2083 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 | 2084 | goto dma_error; |
d4e0fe01 AD |
2085 | } |
2086 | ||
2087 | tx_ring->buffer_info[i].skb = skb; | |
2088 | tx_ring->buffer_info[first].next_to_watch = i; | |
2089 | ||
a7d5ca40 AD |
2090 | return ++count; |
2091 | ||
2092 | dma_error: | |
2093 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2094 | ||
2095 | /* clear timestamp and dma mappings for failed buffer_info mapping */ | |
2096 | buffer_info->dma = 0; | |
2097 | buffer_info->time_stamp = 0; | |
2098 | buffer_info->length = 0; | |
2099 | buffer_info->next_to_watch = 0; | |
2100 | buffer_info->mapped_as_page = false; | |
c1fa347f RK |
2101 | if (count) |
2102 | count--; | |
a7d5ca40 AD |
2103 | |
2104 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
c1fa347f RK |
2105 | while (count--) { |
2106 | if (i==0) | |
a7d5ca40 | 2107 | i += tx_ring->count; |
c1fa347f | 2108 | i--; |
a7d5ca40 AD |
2109 | buffer_info = &tx_ring->buffer_info[i]; |
2110 | igbvf_put_txbuf(adapter, buffer_info); | |
2111 | } | |
2112 | ||
2113 | return 0; | |
d4e0fe01 AD |
2114 | } |
2115 | ||
2116 | static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, | |
2117 | struct igbvf_ring *tx_ring, | |
2118 | int tx_flags, int count, u32 paylen, | |
2119 | u8 hdr_len) | |
2120 | { | |
2121 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2122 | struct igbvf_buffer *buffer_info; | |
2123 | u32 olinfo_status = 0, cmd_type_len; | |
2124 | unsigned int i; | |
2125 | ||
2126 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
2127 | E1000_ADVTXD_DCMD_DEXT); | |
2128 | ||
2129 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2130 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2131 | ||
2132 | if (tx_flags & IGBVF_TX_FLAGS_TSO) { | |
2133 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2134 | ||
2135 | /* insert tcp checksum */ | |
2136 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2137 | ||
2138 | /* insert ip checksum */ | |
2139 | if (tx_flags & IGBVF_TX_FLAGS_IPV4) | |
2140 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2141 | ||
2142 | } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) { | |
2143 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2144 | } | |
2145 | ||
2146 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2147 | ||
2148 | i = tx_ring->next_to_use; | |
2149 | while (count--) { | |
2150 | buffer_info = &tx_ring->buffer_info[i]; | |
2151 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
2152 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2153 | tx_desc->read.cmd_type_len = | |
2154 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
2155 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2156 | i++; | |
2157 | if (i == tx_ring->count) | |
2158 | i = 0; | |
2159 | } | |
2160 | ||
2161 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2162 | /* Force memory writes to complete before letting h/w | |
2163 | * know there are new descriptors to fetch. (Only | |
2164 | * applicable for weak-ordered memory model archs, | |
2165 | * such as IA-64). */ | |
2166 | wmb(); | |
2167 | ||
2168 | tx_ring->next_to_use = i; | |
2169 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2170 | /* we need this if more than one processor can write to our tail | |
2171 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2172 | mmiowb(); | |
2173 | } | |
2174 | ||
3b29a56d SH |
2175 | static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb, |
2176 | struct net_device *netdev, | |
2177 | struct igbvf_ring *tx_ring) | |
d4e0fe01 AD |
2178 | { |
2179 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2180 | unsigned int first, tx_flags = 0; | |
2181 | u8 hdr_len = 0; | |
2182 | int count = 0; | |
2183 | int tso = 0; | |
2184 | ||
2185 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2186 | dev_kfree_skb_any(skb); | |
2187 | return NETDEV_TX_OK; | |
2188 | } | |
2189 | ||
2190 | if (skb->len <= 0) { | |
2191 | dev_kfree_skb_any(skb); | |
2192 | return NETDEV_TX_OK; | |
2193 | } | |
2194 | ||
2195 | /* | |
2196 | * need: count + 4 desc gap to keep tail from touching | |
2197 | * + 2 desc gap to keep tail from touching head, | |
2198 | * + 1 desc for skb->data, | |
2199 | * + 1 desc for context descriptor, | |
2200 | * head, otherwise try next time | |
2201 | */ | |
2202 | if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) { | |
2203 | /* this is a hard error */ | |
2204 | return NETDEV_TX_BUSY; | |
2205 | } | |
2206 | ||
a0f1d603 | 2207 | if (vlan_tx_tag_present(skb)) { |
d4e0fe01 AD |
2208 | tx_flags |= IGBVF_TX_FLAGS_VLAN; |
2209 | tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT); | |
2210 | } | |
2211 | ||
2212 | if (skb->protocol == htons(ETH_P_IP)) | |
2213 | tx_flags |= IGBVF_TX_FLAGS_IPV4; | |
2214 | ||
2215 | first = tx_ring->next_to_use; | |
2216 | ||
2217 | tso = skb_is_gso(skb) ? | |
2218 | igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0; | |
2219 | if (unlikely(tso < 0)) { | |
2220 | dev_kfree_skb_any(skb); | |
2221 | return NETDEV_TX_OK; | |
2222 | } | |
2223 | ||
2224 | if (tso) | |
2225 | tx_flags |= IGBVF_TX_FLAGS_TSO; | |
2226 | else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2227 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2228 | tx_flags |= IGBVF_TX_FLAGS_CSUM; | |
2229 | ||
2230 | /* | |
2231 | * count reflects descriptors mapped, if 0 then mapping error | |
25985edc | 2232 | * has occurred and we need to rewind the descriptor queue |
d4e0fe01 AD |
2233 | */ |
2234 | count = igbvf_tx_map_adv(adapter, tx_ring, skb, first); | |
2235 | ||
2236 | if (count) { | |
2237 | igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count, | |
2238 | skb->len, hdr_len); | |
d4e0fe01 AD |
2239 | /* Make sure there is space in the ring for the next send. */ |
2240 | igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4); | |
2241 | } else { | |
2242 | dev_kfree_skb_any(skb); | |
2243 | tx_ring->buffer_info[first].time_stamp = 0; | |
2244 | tx_ring->next_to_use = first; | |
2245 | } | |
2246 | ||
2247 | return NETDEV_TX_OK; | |
2248 | } | |
2249 | ||
3b29a56d SH |
2250 | static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb, |
2251 | struct net_device *netdev) | |
d4e0fe01 AD |
2252 | { |
2253 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2254 | struct igbvf_ring *tx_ring; | |
d4e0fe01 AD |
2255 | |
2256 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2257 | dev_kfree_skb_any(skb); | |
2258 | return NETDEV_TX_OK; | |
2259 | } | |
2260 | ||
2261 | tx_ring = &adapter->tx_ring[0]; | |
2262 | ||
3b29a56d | 2263 | return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring); |
d4e0fe01 AD |
2264 | } |
2265 | ||
2266 | /** | |
2267 | * igbvf_tx_timeout - Respond to a Tx Hang | |
2268 | * @netdev: network interface device structure | |
2269 | **/ | |
2270 | static void igbvf_tx_timeout(struct net_device *netdev) | |
2271 | { | |
2272 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2273 | ||
2274 | /* Do the reset outside of interrupt context */ | |
2275 | adapter->tx_timeout_count++; | |
2276 | schedule_work(&adapter->reset_task); | |
2277 | } | |
2278 | ||
2279 | static void igbvf_reset_task(struct work_struct *work) | |
2280 | { | |
2281 | struct igbvf_adapter *adapter; | |
2282 | adapter = container_of(work, struct igbvf_adapter, reset_task); | |
2283 | ||
2284 | igbvf_reinit_locked(adapter); | |
2285 | } | |
2286 | ||
2287 | /** | |
2288 | * igbvf_get_stats - Get System Network Statistics | |
2289 | * @netdev: network interface device structure | |
2290 | * | |
2291 | * Returns the address of the device statistics structure. | |
2292 | * The statistics are actually updated from the timer callback. | |
2293 | **/ | |
2294 | static struct net_device_stats *igbvf_get_stats(struct net_device *netdev) | |
2295 | { | |
2296 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2297 | ||
2298 | /* only return the current stats */ | |
2299 | return &adapter->net_stats; | |
2300 | } | |
2301 | ||
2302 | /** | |
2303 | * igbvf_change_mtu - Change the Maximum Transfer Unit | |
2304 | * @netdev: network interface device structure | |
2305 | * @new_mtu: new value for maximum frame size | |
2306 | * | |
2307 | * Returns 0 on success, negative on failure | |
2308 | **/ | |
2309 | static int igbvf_change_mtu(struct net_device *netdev, int new_mtu) | |
2310 | { | |
2311 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2312 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2313 | ||
2314 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2315 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
2316 | return -EINVAL; | |
2317 | } | |
2318 | ||
d4e0fe01 AD |
2319 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
2320 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
2321 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
2322 | return -EINVAL; | |
2323 | } | |
2324 | ||
2325 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
2326 | msleep(1); | |
2327 | /* igbvf_down has a dependency on max_frame_size */ | |
2328 | adapter->max_frame_size = max_frame; | |
2329 | if (netif_running(netdev)) | |
2330 | igbvf_down(adapter); | |
2331 | ||
2332 | /* | |
2333 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
2334 | * means we reserve 2 more, this pushes us to allocate from the next | |
2335 | * larger slab size. | |
2336 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
2337 | * However with the new *_jumbo_rx* routines, jumbo receives will use | |
2338 | * fragmented skbs | |
2339 | */ | |
2340 | ||
2341 | if (max_frame <= 1024) | |
2342 | adapter->rx_buffer_len = 1024; | |
2343 | else if (max_frame <= 2048) | |
2344 | adapter->rx_buffer_len = 2048; | |
2345 | else | |
2346 | #if (PAGE_SIZE / 2) > 16384 | |
2347 | adapter->rx_buffer_len = 16384; | |
2348 | #else | |
2349 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
2350 | #endif | |
2351 | ||
2352 | ||
2353 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
2354 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
2355 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
2356 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + | |
2357 | ETH_FCS_LEN; | |
2358 | ||
2359 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
2360 | netdev->mtu, new_mtu); | |
2361 | netdev->mtu = new_mtu; | |
2362 | ||
2363 | if (netif_running(netdev)) | |
2364 | igbvf_up(adapter); | |
2365 | else | |
2366 | igbvf_reset(adapter); | |
2367 | ||
2368 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2369 | ||
2370 | return 0; | |
2371 | } | |
2372 | ||
2373 | static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2374 | { | |
2375 | switch (cmd) { | |
2376 | default: | |
2377 | return -EOPNOTSUPP; | |
2378 | } | |
2379 | } | |
2380 | ||
2381 | static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2382 | { | |
2383 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2384 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2385 | #ifdef CONFIG_PM | |
2386 | int retval = 0; | |
2387 | #endif | |
2388 | ||
2389 | netif_device_detach(netdev); | |
2390 | ||
2391 | if (netif_running(netdev)) { | |
2392 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
2393 | igbvf_down(adapter); | |
2394 | igbvf_free_irq(adapter); | |
2395 | } | |
2396 | ||
2397 | #ifdef CONFIG_PM | |
2398 | retval = pci_save_state(pdev); | |
2399 | if (retval) | |
2400 | return retval; | |
2401 | #endif | |
2402 | ||
2403 | pci_disable_device(pdev); | |
2404 | ||
2405 | return 0; | |
2406 | } | |
2407 | ||
2408 | #ifdef CONFIG_PM | |
2409 | static int igbvf_resume(struct pci_dev *pdev) | |
2410 | { | |
2411 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2412 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2413 | u32 err; | |
2414 | ||
2415 | pci_restore_state(pdev); | |
2416 | err = pci_enable_device_mem(pdev); | |
2417 | if (err) { | |
2418 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); | |
2419 | return err; | |
2420 | } | |
2421 | ||
2422 | pci_set_master(pdev); | |
2423 | ||
2424 | if (netif_running(netdev)) { | |
2425 | err = igbvf_request_irq(adapter); | |
2426 | if (err) | |
2427 | return err; | |
2428 | } | |
2429 | ||
2430 | igbvf_reset(adapter); | |
2431 | ||
2432 | if (netif_running(netdev)) | |
2433 | igbvf_up(adapter); | |
2434 | ||
2435 | netif_device_attach(netdev); | |
2436 | ||
2437 | return 0; | |
2438 | } | |
2439 | #endif | |
2440 | ||
2441 | static void igbvf_shutdown(struct pci_dev *pdev) | |
2442 | { | |
2443 | igbvf_suspend(pdev, PMSG_SUSPEND); | |
2444 | } | |
2445 | ||
2446 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2447 | /* | |
2448 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2449 | * without having to re-enable interrupts. It's not called while | |
2450 | * the interrupt routine is executing. | |
2451 | */ | |
2452 | static void igbvf_netpoll(struct net_device *netdev) | |
2453 | { | |
2454 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2455 | ||
2456 | disable_irq(adapter->pdev->irq); | |
2457 | ||
2458 | igbvf_clean_tx_irq(adapter->tx_ring); | |
2459 | ||
2460 | enable_irq(adapter->pdev->irq); | |
2461 | } | |
2462 | #endif | |
2463 | ||
2464 | /** | |
2465 | * igbvf_io_error_detected - called when PCI error is detected | |
2466 | * @pdev: Pointer to PCI device | |
2467 | * @state: The current pci connection state | |
2468 | * | |
2469 | * This function is called after a PCI bus error affecting | |
2470 | * this device has been detected. | |
2471 | */ | |
2472 | static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev, | |
2473 | pci_channel_state_t state) | |
2474 | { | |
2475 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2476 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2477 | ||
2478 | netif_device_detach(netdev); | |
2479 | ||
c06c430d DN |
2480 | if (state == pci_channel_io_perm_failure) |
2481 | return PCI_ERS_RESULT_DISCONNECT; | |
2482 | ||
d4e0fe01 AD |
2483 | if (netif_running(netdev)) |
2484 | igbvf_down(adapter); | |
2485 | pci_disable_device(pdev); | |
2486 | ||
2487 | /* Request a slot slot reset. */ | |
2488 | return PCI_ERS_RESULT_NEED_RESET; | |
2489 | } | |
2490 | ||
2491 | /** | |
2492 | * igbvf_io_slot_reset - called after the pci bus has been reset. | |
2493 | * @pdev: Pointer to PCI device | |
2494 | * | |
2495 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2496 | * resembles the first-half of the igbvf_resume routine. | |
2497 | */ | |
2498 | static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev) | |
2499 | { | |
2500 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2501 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2502 | ||
2503 | if (pci_enable_device_mem(pdev)) { | |
2504 | dev_err(&pdev->dev, | |
2505 | "Cannot re-enable PCI device after reset.\n"); | |
2506 | return PCI_ERS_RESULT_DISCONNECT; | |
2507 | } | |
2508 | pci_set_master(pdev); | |
2509 | ||
2510 | igbvf_reset(adapter); | |
2511 | ||
2512 | return PCI_ERS_RESULT_RECOVERED; | |
2513 | } | |
2514 | ||
2515 | /** | |
2516 | * igbvf_io_resume - called when traffic can start flowing again. | |
2517 | * @pdev: Pointer to PCI device | |
2518 | * | |
2519 | * This callback is called when the error recovery driver tells us that | |
2520 | * its OK to resume normal operation. Implementation resembles the | |
2521 | * second-half of the igbvf_resume routine. | |
2522 | */ | |
2523 | static void igbvf_io_resume(struct pci_dev *pdev) | |
2524 | { | |
2525 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2526 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2527 | ||
2528 | if (netif_running(netdev)) { | |
2529 | if (igbvf_up(adapter)) { | |
2530 | dev_err(&pdev->dev, | |
2531 | "can't bring device back up after reset\n"); | |
2532 | return; | |
2533 | } | |
2534 | } | |
2535 | ||
2536 | netif_device_attach(netdev); | |
2537 | } | |
2538 | ||
2539 | static void igbvf_print_device_info(struct igbvf_adapter *adapter) | |
2540 | { | |
2541 | struct e1000_hw *hw = &adapter->hw; | |
2542 | struct net_device *netdev = adapter->netdev; | |
2543 | struct pci_dev *pdev = adapter->pdev; | |
2544 | ||
10090751 WM |
2545 | if (hw->mac.type == e1000_vfadapt_i350) |
2546 | dev_info(&pdev->dev, "Intel(R) I350 Virtual Function\n"); | |
2547 | else | |
2548 | dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n"); | |
753cdc33 | 2549 | dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr); |
d4e0fe01 AD |
2550 | } |
2551 | ||
c8f44aff MM |
2552 | static int igbvf_set_features(struct net_device *netdev, |
2553 | netdev_features_t features) | |
fd38f734 MM |
2554 | { |
2555 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2556 | ||
2557 | if (features & NETIF_F_RXCSUM) | |
2558 | adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED; | |
2559 | else | |
2560 | adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED; | |
2561 | ||
2562 | return 0; | |
2563 | } | |
2564 | ||
d4e0fe01 AD |
2565 | static const struct net_device_ops igbvf_netdev_ops = { |
2566 | .ndo_open = igbvf_open, | |
2567 | .ndo_stop = igbvf_close, | |
2568 | .ndo_start_xmit = igbvf_xmit_frame, | |
2569 | .ndo_get_stats = igbvf_get_stats, | |
afc4b13d | 2570 | .ndo_set_rx_mode = igbvf_set_multi, |
d4e0fe01 AD |
2571 | .ndo_set_mac_address = igbvf_set_mac, |
2572 | .ndo_change_mtu = igbvf_change_mtu, | |
2573 | .ndo_do_ioctl = igbvf_ioctl, | |
2574 | .ndo_tx_timeout = igbvf_tx_timeout, | |
d4e0fe01 AD |
2575 | .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid, |
2576 | .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid, | |
2577 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2578 | .ndo_poll_controller = igbvf_netpoll, | |
2579 | #endif | |
fd38f734 | 2580 | .ndo_set_features = igbvf_set_features, |
d4e0fe01 AD |
2581 | }; |
2582 | ||
2583 | /** | |
2584 | * igbvf_probe - Device Initialization Routine | |
2585 | * @pdev: PCI device information struct | |
2586 | * @ent: entry in igbvf_pci_tbl | |
2587 | * | |
2588 | * Returns 0 on success, negative on failure | |
2589 | * | |
2590 | * igbvf_probe initializes an adapter identified by a pci_dev structure. | |
2591 | * The OS initialization, configuring of the adapter private structure, | |
2592 | * and a hardware reset occur. | |
2593 | **/ | |
2594 | static int __devinit igbvf_probe(struct pci_dev *pdev, | |
2595 | const struct pci_device_id *ent) | |
2596 | { | |
2597 | struct net_device *netdev; | |
2598 | struct igbvf_adapter *adapter; | |
2599 | struct e1000_hw *hw; | |
2600 | const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data]; | |
2601 | ||
2602 | static int cards_found; | |
2603 | int err, pci_using_dac; | |
2604 | ||
2605 | err = pci_enable_device_mem(pdev); | |
2606 | if (err) | |
2607 | return err; | |
2608 | ||
2609 | pci_using_dac = 0; | |
123e9f1a | 2610 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
d4e0fe01 | 2611 | if (!err) { |
123e9f1a | 2612 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
d4e0fe01 AD |
2613 | if (!err) |
2614 | pci_using_dac = 1; | |
2615 | } else { | |
123e9f1a | 2616 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
d4e0fe01 | 2617 | if (err) { |
123e9f1a NN |
2618 | err = dma_set_coherent_mask(&pdev->dev, |
2619 | DMA_BIT_MASK(32)); | |
d4e0fe01 AD |
2620 | if (err) { |
2621 | dev_err(&pdev->dev, "No usable DMA " | |
2622 | "configuration, aborting\n"); | |
2623 | goto err_dma; | |
2624 | } | |
2625 | } | |
2626 | } | |
2627 | ||
2628 | err = pci_request_regions(pdev, igbvf_driver_name); | |
2629 | if (err) | |
2630 | goto err_pci_reg; | |
2631 | ||
2632 | pci_set_master(pdev); | |
2633 | ||
2634 | err = -ENOMEM; | |
2635 | netdev = alloc_etherdev(sizeof(struct igbvf_adapter)); | |
2636 | if (!netdev) | |
2637 | goto err_alloc_etherdev; | |
2638 | ||
2639 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2640 | ||
2641 | pci_set_drvdata(pdev, netdev); | |
2642 | adapter = netdev_priv(netdev); | |
2643 | hw = &adapter->hw; | |
2644 | adapter->netdev = netdev; | |
2645 | adapter->pdev = pdev; | |
2646 | adapter->ei = ei; | |
2647 | adapter->pba = ei->pba; | |
2648 | adapter->flags = ei->flags; | |
2649 | adapter->hw.back = adapter; | |
2650 | adapter->hw.mac.type = ei->mac; | |
2651 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; | |
2652 | ||
2653 | /* PCI config space info */ | |
2654 | ||
2655 | hw->vendor_id = pdev->vendor; | |
2656 | hw->device_id = pdev->device; | |
2657 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2658 | hw->subsystem_device_id = pdev->subsystem_device; | |
ff938e43 | 2659 | hw->revision_id = pdev->revision; |
d4e0fe01 AD |
2660 | |
2661 | err = -EIO; | |
2662 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2663 | pci_resource_len(pdev, 0)); | |
2664 | ||
2665 | if (!adapter->hw.hw_addr) | |
2666 | goto err_ioremap; | |
2667 | ||
2668 | if (ei->get_variants) { | |
2669 | err = ei->get_variants(adapter); | |
2670 | if (err) | |
2671 | goto err_ioremap; | |
2672 | } | |
2673 | ||
2674 | /* setup adapter struct */ | |
2675 | err = igbvf_sw_init(adapter); | |
2676 | if (err) | |
2677 | goto err_sw_init; | |
2678 | ||
2679 | /* construct the net_device struct */ | |
2680 | netdev->netdev_ops = &igbvf_netdev_ops; | |
2681 | ||
2682 | igbvf_set_ethtool_ops(netdev); | |
2683 | netdev->watchdog_timeo = 5 * HZ; | |
2684 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2685 | ||
2686 | adapter->bd_number = cards_found++; | |
2687 | ||
fd38f734 | 2688 | netdev->hw_features = NETIF_F_SG | |
d4e0fe01 | 2689 | NETIF_F_IP_CSUM | |
fd38f734 MM |
2690 | NETIF_F_IPV6_CSUM | |
2691 | NETIF_F_TSO | | |
2692 | NETIF_F_TSO6 | | |
2693 | NETIF_F_RXCSUM; | |
2694 | ||
2695 | netdev->features = netdev->hw_features | | |
d4e0fe01 AD |
2696 | NETIF_F_HW_VLAN_TX | |
2697 | NETIF_F_HW_VLAN_RX | | |
2698 | NETIF_F_HW_VLAN_FILTER; | |
2699 | ||
d4e0fe01 AD |
2700 | if (pci_using_dac) |
2701 | netdev->features |= NETIF_F_HIGHDMA; | |
2702 | ||
2703 | netdev->vlan_features |= NETIF_F_TSO; | |
2704 | netdev->vlan_features |= NETIF_F_TSO6; | |
2705 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
2706 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; | |
2707 | netdev->vlan_features |= NETIF_F_SG; | |
2708 | ||
2709 | /*reset the controller to put the device in a known good state */ | |
2710 | err = hw->mac.ops.reset_hw(hw); | |
2711 | if (err) { | |
2712 | dev_info(&pdev->dev, | |
1242b6f3 WM |
2713 | "PF still in reset state, assigning new address." |
2714 | " Is the PF interface up?\n"); | |
1a0d6ae5 DK |
2715 | eth_hw_addr_random(netdev); |
2716 | memcpy(adapter->hw.mac.addr, netdev->dev_addr, | |
2717 | netdev->addr_len); | |
d4e0fe01 AD |
2718 | } else { |
2719 | err = hw->mac.ops.read_mac_addr(hw); | |
2720 | if (err) { | |
2721 | dev_err(&pdev->dev, "Error reading MAC address\n"); | |
2722 | goto err_hw_init; | |
2723 | } | |
1a0d6ae5 DK |
2724 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, |
2725 | netdev->addr_len); | |
d4e0fe01 AD |
2726 | } |
2727 | ||
d4e0fe01 | 2728 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
753cdc33 HS |
2729 | dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
2730 | netdev->dev_addr); | |
d4e0fe01 AD |
2731 | err = -EIO; |
2732 | goto err_hw_init; | |
2733 | } | |
2734 | ||
1a0d6ae5 DK |
2735 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
2736 | ||
d4e0fe01 AD |
2737 | setup_timer(&adapter->watchdog_timer, &igbvf_watchdog, |
2738 | (unsigned long) adapter); | |
2739 | ||
2740 | INIT_WORK(&adapter->reset_task, igbvf_reset_task); | |
2741 | INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task); | |
2742 | ||
2743 | /* ring size defaults */ | |
2744 | adapter->rx_ring->count = 1024; | |
2745 | adapter->tx_ring->count = 1024; | |
2746 | ||
2747 | /* reset the hardware with the new settings */ | |
2748 | igbvf_reset(adapter); | |
2749 | ||
d4e0fe01 AD |
2750 | strcpy(netdev->name, "eth%d"); |
2751 | err = register_netdev(netdev); | |
2752 | if (err) | |
2753 | goto err_hw_init; | |
2754 | ||
de7fe787 ET |
2755 | /* tell the stack to leave us alone until igbvf_open() is called */ |
2756 | netif_carrier_off(netdev); | |
2757 | netif_stop_queue(netdev); | |
2758 | ||
d4e0fe01 AD |
2759 | igbvf_print_device_info(adapter); |
2760 | ||
2761 | igbvf_initialize_last_counter_stats(adapter); | |
2762 | ||
2763 | return 0; | |
2764 | ||
2765 | err_hw_init: | |
2766 | kfree(adapter->tx_ring); | |
2767 | kfree(adapter->rx_ring); | |
2768 | err_sw_init: | |
2769 | igbvf_reset_interrupt_capability(adapter); | |
2770 | iounmap(adapter->hw.hw_addr); | |
2771 | err_ioremap: | |
2772 | free_netdev(netdev); | |
2773 | err_alloc_etherdev: | |
2774 | pci_release_regions(pdev); | |
2775 | err_pci_reg: | |
2776 | err_dma: | |
2777 | pci_disable_device(pdev); | |
2778 | return err; | |
2779 | } | |
2780 | ||
2781 | /** | |
2782 | * igbvf_remove - Device Removal Routine | |
2783 | * @pdev: PCI device information struct | |
2784 | * | |
2785 | * igbvf_remove is called by the PCI subsystem to alert the driver | |
2786 | * that it should release a PCI device. The could be caused by a | |
2787 | * Hot-Plug event, or because the driver is going to be removed from | |
2788 | * memory. | |
2789 | **/ | |
2790 | static void __devexit igbvf_remove(struct pci_dev *pdev) | |
2791 | { | |
2792 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2793 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2794 | struct e1000_hw *hw = &adapter->hw; | |
2795 | ||
2796 | /* | |
760141a5 TH |
2797 | * The watchdog timer may be rescheduled, so explicitly |
2798 | * disable it from being rescheduled. | |
d4e0fe01 AD |
2799 | */ |
2800 | set_bit(__IGBVF_DOWN, &adapter->state); | |
2801 | del_timer_sync(&adapter->watchdog_timer); | |
2802 | ||
760141a5 TH |
2803 | cancel_work_sync(&adapter->reset_task); |
2804 | cancel_work_sync(&adapter->watchdog_task); | |
d4e0fe01 AD |
2805 | |
2806 | unregister_netdev(netdev); | |
2807 | ||
2808 | igbvf_reset_interrupt_capability(adapter); | |
2809 | ||
2810 | /* | |
2811 | * it is important to delete the napi struct prior to freeing the | |
2812 | * rx ring so that you do not end up with null pointer refs | |
2813 | */ | |
2814 | netif_napi_del(&adapter->rx_ring->napi); | |
2815 | kfree(adapter->tx_ring); | |
2816 | kfree(adapter->rx_ring); | |
2817 | ||
2818 | iounmap(hw->hw_addr); | |
2819 | if (hw->flash_address) | |
2820 | iounmap(hw->flash_address); | |
2821 | pci_release_regions(pdev); | |
2822 | ||
2823 | free_netdev(netdev); | |
2824 | ||
2825 | pci_disable_device(pdev); | |
2826 | } | |
2827 | ||
2828 | /* PCI Error Recovery (ERS) */ | |
2829 | static struct pci_error_handlers igbvf_err_handler = { | |
2830 | .error_detected = igbvf_io_error_detected, | |
2831 | .slot_reset = igbvf_io_slot_reset, | |
2832 | .resume = igbvf_io_resume, | |
2833 | }; | |
2834 | ||
a3aa1884 | 2835 | static DEFINE_PCI_DEVICE_TABLE(igbvf_pci_tbl) = { |
d4e0fe01 | 2836 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf }, |
031d7952 | 2837 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf }, |
d4e0fe01 AD |
2838 | { } /* terminate list */ |
2839 | }; | |
2840 | MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl); | |
2841 | ||
2842 | /* PCI Device API Driver */ | |
2843 | static struct pci_driver igbvf_driver = { | |
2844 | .name = igbvf_driver_name, | |
2845 | .id_table = igbvf_pci_tbl, | |
2846 | .probe = igbvf_probe, | |
2847 | .remove = __devexit_p(igbvf_remove), | |
2848 | #ifdef CONFIG_PM | |
2849 | /* Power Management Hooks */ | |
2850 | .suspend = igbvf_suspend, | |
2851 | .resume = igbvf_resume, | |
2852 | #endif | |
2853 | .shutdown = igbvf_shutdown, | |
2854 | .err_handler = &igbvf_err_handler | |
2855 | }; | |
2856 | ||
2857 | /** | |
2858 | * igbvf_init_module - Driver Registration Routine | |
2859 | * | |
2860 | * igbvf_init_module is the first routine called when the driver is | |
2861 | * loaded. All it does is register with the PCI subsystem. | |
2862 | **/ | |
2863 | static int __init igbvf_init_module(void) | |
2864 | { | |
2865 | int ret; | |
a4ba8cbe JK |
2866 | pr_info("%s - version %s\n", igbvf_driver_string, igbvf_driver_version); |
2867 | pr_info("%s\n", igbvf_copyright); | |
d4e0fe01 AD |
2868 | |
2869 | ret = pci_register_driver(&igbvf_driver); | |
d4e0fe01 AD |
2870 | |
2871 | return ret; | |
2872 | } | |
2873 | module_init(igbvf_init_module); | |
2874 | ||
2875 | /** | |
2876 | * igbvf_exit_module - Driver Exit Cleanup Routine | |
2877 | * | |
2878 | * igbvf_exit_module is called just before the driver is removed | |
2879 | * from memory. | |
2880 | **/ | |
2881 | static void __exit igbvf_exit_module(void) | |
2882 | { | |
2883 | pci_unregister_driver(&igbvf_driver); | |
d4e0fe01 AD |
2884 | } |
2885 | module_exit(igbvf_exit_module); | |
2886 | ||
2887 | ||
2888 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
10090751 | 2889 | MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver"); |
d4e0fe01 AD |
2890 | MODULE_LICENSE("GPL"); |
2891 | MODULE_VERSION(DRV_VERSION); | |
2892 | ||
2893 | /* netdev.c */ |