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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 | 57 | |
b3f4d599 | 58 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
59 | static int debug = -1; | |
60 | module_param(debug, int, 0); | |
61 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
62 | ||
d4e0fe01 | 63 | static int igbvf_poll(struct napi_struct *napi, int budget); |
2d165771 AD |
64 | static void igbvf_reset(struct igbvf_adapter *); |
65 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *); | |
66 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *); | |
d4e0fe01 AD |
67 | |
68 | static struct igbvf_info igbvf_vf_info = { | |
69 | .mac = e1000_vfadapt, | |
0364d6fd | 70 | .flags = 0, |
d4e0fe01 AD |
71 | .pba = 10, |
72 | .init_ops = e1000_init_function_pointers_vf, | |
73 | }; | |
74 | ||
031d7952 WM |
75 | static struct igbvf_info igbvf_i350_vf_info = { |
76 | .mac = e1000_vfadapt_i350, | |
77 | .flags = 0, | |
78 | .pba = 10, | |
79 | .init_ops = e1000_init_function_pointers_vf, | |
80 | }; | |
81 | ||
d4e0fe01 AD |
82 | static const struct igbvf_info *igbvf_info_tbl[] = { |
83 | [board_vf] = &igbvf_vf_info, | |
031d7952 | 84 | [board_i350_vf] = &igbvf_i350_vf_info, |
d4e0fe01 AD |
85 | }; |
86 | ||
87 | /** | |
88 | * igbvf_desc_unused - calculate if we have unused descriptors | |
89 | **/ | |
90 | static int igbvf_desc_unused(struct igbvf_ring *ring) | |
91 | { | |
92 | if (ring->next_to_clean > ring->next_to_use) | |
93 | return ring->next_to_clean - ring->next_to_use - 1; | |
94 | ||
95 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
96 | } | |
97 | ||
98 | /** | |
99 | * igbvf_receive_skb - helper function to handle Rx indications | |
100 | * @adapter: board private structure | |
101 | * @status: descriptor status field as written by hardware | |
102 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
103 | * @skb: pointer to sk_buff to be indicated to stack | |
104 | **/ | |
105 | static void igbvf_receive_skb(struct igbvf_adapter *adapter, | |
106 | struct net_device *netdev, | |
107 | struct sk_buff *skb, | |
108 | u32 status, u16 vlan) | |
109 | { | |
a0f1d603 JP |
110 | if (status & E1000_RXD_STAT_VP) { |
111 | u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
4d2d55ac GR |
112 | if (test_bit(vid, adapter->active_vlans)) |
113 | __vlan_hwaccel_put_tag(skb, vid); | |
a0f1d603 JP |
114 | } |
115 | netif_receive_skb(skb); | |
d4e0fe01 AD |
116 | } |
117 | ||
118 | static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, | |
119 | u32 status_err, struct sk_buff *skb) | |
120 | { | |
bc8acf2c | 121 | skb_checksum_none_assert(skb); |
d4e0fe01 AD |
122 | |
123 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
0364d6fd AD |
124 | if ((status_err & E1000_RXD_STAT_IXSM) || |
125 | (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED)) | |
d4e0fe01 | 126 | return; |
0364d6fd | 127 | |
d4e0fe01 AD |
128 | /* TCP/UDP checksum error bit is set */ |
129 | if (status_err & | |
130 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
131 | /* let the stack verify checksum errors */ | |
132 | adapter->hw_csum_err++; | |
133 | return; | |
134 | } | |
0364d6fd | 135 | |
d4e0fe01 AD |
136 | /* It must be a TCP or UDP packet with a valid checksum */ |
137 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
138 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
139 | ||
140 | adapter->hw_csum_good++; | |
141 | } | |
142 | ||
143 | /** | |
144 | * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split | |
145 | * @rx_ring: address of ring structure to repopulate | |
146 | * @cleaned_count: number of buffers to repopulate | |
147 | **/ | |
148 | static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring, | |
149 | int cleaned_count) | |
150 | { | |
151 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
152 | struct net_device *netdev = adapter->netdev; | |
153 | struct pci_dev *pdev = adapter->pdev; | |
154 | union e1000_adv_rx_desc *rx_desc; | |
155 | struct igbvf_buffer *buffer_info; | |
156 | struct sk_buff *skb; | |
157 | unsigned int i; | |
158 | int bufsz; | |
159 | ||
160 | i = rx_ring->next_to_use; | |
161 | buffer_info = &rx_ring->buffer_info[i]; | |
162 | ||
163 | if (adapter->rx_ps_hdr_size) | |
164 | bufsz = adapter->rx_ps_hdr_size; | |
165 | else | |
166 | bufsz = adapter->rx_buffer_len; | |
d4e0fe01 AD |
167 | |
168 | while (cleaned_count--) { | |
169 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
170 | ||
171 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { | |
172 | if (!buffer_info->page) { | |
173 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
174 | if (!buffer_info->page) { | |
175 | adapter->alloc_rx_buff_failed++; | |
176 | goto no_buffers; | |
177 | } | |
178 | buffer_info->page_offset = 0; | |
179 | } else { | |
180 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
181 | } | |
182 | buffer_info->page_dma = | |
123e9f1a | 183 | dma_map_page(&pdev->dev, buffer_info->page, |
d4e0fe01 AD |
184 | buffer_info->page_offset, |
185 | PAGE_SIZE / 2, | |
123e9f1a | 186 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
187 | } |
188 | ||
189 | if (!buffer_info->skb) { | |
89d71a66 | 190 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
d4e0fe01 AD |
191 | if (!skb) { |
192 | adapter->alloc_rx_buff_failed++; | |
193 | goto no_buffers; | |
194 | } | |
195 | ||
d4e0fe01 | 196 | buffer_info->skb = skb; |
123e9f1a | 197 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
d4e0fe01 | 198 | bufsz, |
123e9f1a | 199 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
200 | } |
201 | /* Refresh the desc even if buffer_addrs didn't change because | |
202 | * each write-back erases this info. */ | |
203 | if (adapter->rx_ps_hdr_size) { | |
204 | rx_desc->read.pkt_addr = | |
205 | cpu_to_le64(buffer_info->page_dma); | |
206 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
207 | } else { | |
208 | rx_desc->read.pkt_addr = | |
209 | cpu_to_le64(buffer_info->dma); | |
210 | rx_desc->read.hdr_addr = 0; | |
211 | } | |
212 | ||
213 | i++; | |
214 | if (i == rx_ring->count) | |
215 | i = 0; | |
216 | buffer_info = &rx_ring->buffer_info[i]; | |
217 | } | |
218 | ||
219 | no_buffers: | |
220 | if (rx_ring->next_to_use != i) { | |
221 | rx_ring->next_to_use = i; | |
222 | if (i == 0) | |
223 | i = (rx_ring->count - 1); | |
224 | else | |
225 | i--; | |
226 | ||
227 | /* Force memory writes to complete before letting h/w | |
228 | * know there are new descriptors to fetch. (Only | |
229 | * applicable for weak-ordered memory model archs, | |
230 | * such as IA-64). */ | |
231 | wmb(); | |
232 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
233 | } | |
234 | } | |
235 | ||
236 | /** | |
237 | * igbvf_clean_rx_irq - Send received data up the network stack; legacy | |
238 | * @adapter: board private structure | |
239 | * | |
240 | * the return value indicates whether actual cleaning was done, there | |
241 | * is no guarantee that everything was cleaned | |
242 | **/ | |
243 | static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter, | |
244 | int *work_done, int work_to_do) | |
245 | { | |
246 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
247 | struct net_device *netdev = adapter->netdev; | |
248 | struct pci_dev *pdev = adapter->pdev; | |
249 | union e1000_adv_rx_desc *rx_desc, *next_rxd; | |
250 | struct igbvf_buffer *buffer_info, *next_buffer; | |
251 | struct sk_buff *skb; | |
252 | bool cleaned = false; | |
253 | int cleaned_count = 0; | |
254 | unsigned int total_bytes = 0, total_packets = 0; | |
255 | unsigned int i; | |
256 | u32 length, hlen, staterr; | |
257 | ||
258 | i = rx_ring->next_to_clean; | |
259 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
260 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
261 | ||
262 | while (staterr & E1000_RXD_STAT_DD) { | |
263 | if (*work_done >= work_to_do) | |
264 | break; | |
265 | (*work_done)++; | |
2d0bb1c1 | 266 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
d4e0fe01 AD |
267 | |
268 | buffer_info = &rx_ring->buffer_info[i]; | |
269 | ||
270 | /* HW will not DMA in data larger than the given buffer, even | |
271 | * if it parses the (NFS, of course) header to be larger. In | |
272 | * that case, it fills the header buffer and spills the rest | |
273 | * into the page. | |
274 | */ | |
275 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) & | |
276 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
277 | if (hlen > adapter->rx_ps_hdr_size) | |
278 | hlen = adapter->rx_ps_hdr_size; | |
279 | ||
280 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
281 | cleaned = true; | |
282 | cleaned_count++; | |
283 | ||
284 | skb = buffer_info->skb; | |
285 | prefetch(skb->data - NET_IP_ALIGN); | |
286 | buffer_info->skb = NULL; | |
287 | if (!adapter->rx_ps_hdr_size) { | |
123e9f1a | 288 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 289 | adapter->rx_buffer_len, |
123e9f1a | 290 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
291 | buffer_info->dma = 0; |
292 | skb_put(skb, length); | |
293 | goto send_up; | |
294 | } | |
295 | ||
296 | if (!skb_shinfo(skb)->nr_frags) { | |
123e9f1a | 297 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
92d947b7 | 298 | adapter->rx_ps_hdr_size, |
123e9f1a | 299 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
300 | skb_put(skb, hlen); |
301 | } | |
302 | ||
303 | if (length) { | |
123e9f1a | 304 | dma_unmap_page(&pdev->dev, buffer_info->page_dma, |
d4e0fe01 | 305 | PAGE_SIZE / 2, |
123e9f1a | 306 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
307 | buffer_info->page_dma = 0; |
308 | ||
ec857fd4 | 309 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, |
d4e0fe01 AD |
310 | buffer_info->page, |
311 | buffer_info->page_offset, | |
312 | length); | |
313 | ||
314 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
315 | (page_count(buffer_info->page) != 1)) | |
316 | buffer_info->page = NULL; | |
317 | else | |
318 | get_page(buffer_info->page); | |
319 | ||
320 | skb->len += length; | |
321 | skb->data_len += length; | |
7b8b5961 | 322 | skb->truesize += PAGE_SIZE / 2; |
d4e0fe01 AD |
323 | } |
324 | send_up: | |
325 | i++; | |
326 | if (i == rx_ring->count) | |
327 | i = 0; | |
328 | next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
329 | prefetch(next_rxd); | |
330 | next_buffer = &rx_ring->buffer_info[i]; | |
331 | ||
332 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
333 | buffer_info->skb = next_buffer->skb; | |
334 | buffer_info->dma = next_buffer->dma; | |
335 | next_buffer->skb = skb; | |
336 | next_buffer->dma = 0; | |
337 | goto next_desc; | |
338 | } | |
339 | ||
340 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
341 | dev_kfree_skb_irq(skb); | |
342 | goto next_desc; | |
343 | } | |
344 | ||
345 | total_bytes += skb->len; | |
346 | total_packets++; | |
347 | ||
348 | igbvf_rx_checksum_adv(adapter, staterr, skb); | |
349 | ||
350 | skb->protocol = eth_type_trans(skb, netdev); | |
351 | ||
352 | igbvf_receive_skb(adapter, netdev, skb, staterr, | |
353 | rx_desc->wb.upper.vlan); | |
354 | ||
d4e0fe01 AD |
355 | next_desc: |
356 | rx_desc->wb.upper.status_error = 0; | |
357 | ||
358 | /* return some buffers to hardware, one at a time is too slow */ | |
359 | if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) { | |
360 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
361 | cleaned_count = 0; | |
362 | } | |
363 | ||
364 | /* use prefetched values */ | |
365 | rx_desc = next_rxd; | |
366 | buffer_info = next_buffer; | |
367 | ||
368 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
369 | } | |
370 | ||
371 | rx_ring->next_to_clean = i; | |
372 | cleaned_count = igbvf_desc_unused(rx_ring); | |
373 | ||
374 | if (cleaned_count) | |
375 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
376 | ||
377 | adapter->total_rx_packets += total_packets; | |
378 | adapter->total_rx_bytes += total_bytes; | |
379 | adapter->net_stats.rx_bytes += total_bytes; | |
380 | adapter->net_stats.rx_packets += total_packets; | |
381 | return cleaned; | |
382 | } | |
383 | ||
384 | static void igbvf_put_txbuf(struct igbvf_adapter *adapter, | |
385 | struct igbvf_buffer *buffer_info) | |
386 | { | |
a7d5ca40 AD |
387 | if (buffer_info->dma) { |
388 | if (buffer_info->mapped_as_page) | |
123e9f1a | 389 | dma_unmap_page(&adapter->pdev->dev, |
a7d5ca40 AD |
390 | buffer_info->dma, |
391 | buffer_info->length, | |
123e9f1a | 392 | DMA_TO_DEVICE); |
a7d5ca40 | 393 | else |
123e9f1a | 394 | dma_unmap_single(&adapter->pdev->dev, |
a7d5ca40 AD |
395 | buffer_info->dma, |
396 | buffer_info->length, | |
123e9f1a | 397 | DMA_TO_DEVICE); |
a7d5ca40 AD |
398 | buffer_info->dma = 0; |
399 | } | |
d4e0fe01 | 400 | if (buffer_info->skb) { |
d4e0fe01 AD |
401 | dev_kfree_skb_any(buffer_info->skb); |
402 | buffer_info->skb = NULL; | |
403 | } | |
404 | buffer_info->time_stamp = 0; | |
405 | } | |
406 | ||
d4e0fe01 AD |
407 | /** |
408 | * igbvf_setup_tx_resources - allocate Tx resources (Descriptors) | |
409 | * @adapter: board private structure | |
410 | * | |
411 | * Return 0 on success, negative on failure | |
412 | **/ | |
413 | int igbvf_setup_tx_resources(struct igbvf_adapter *adapter, | |
414 | struct igbvf_ring *tx_ring) | |
415 | { | |
416 | struct pci_dev *pdev = adapter->pdev; | |
417 | int size; | |
418 | ||
419 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
89bf67f1 | 420 | tx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
421 | if (!tx_ring->buffer_info) |
422 | goto err; | |
d4e0fe01 AD |
423 | |
424 | /* round up to nearest 4K */ | |
425 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); | |
426 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
427 | ||
123e9f1a NN |
428 | tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, |
429 | &tx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
430 | |
431 | if (!tx_ring->desc) | |
432 | goto err; | |
433 | ||
434 | tx_ring->adapter = adapter; | |
435 | tx_ring->next_to_use = 0; | |
436 | tx_ring->next_to_clean = 0; | |
437 | ||
438 | return 0; | |
439 | err: | |
440 | vfree(tx_ring->buffer_info); | |
441 | dev_err(&adapter->pdev->dev, | |
442 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
443 | return -ENOMEM; | |
444 | } | |
445 | ||
446 | /** | |
447 | * igbvf_setup_rx_resources - allocate Rx resources (Descriptors) | |
448 | * @adapter: board private structure | |
449 | * | |
450 | * Returns 0 on success, negative on failure | |
451 | **/ | |
452 | int igbvf_setup_rx_resources(struct igbvf_adapter *adapter, | |
453 | struct igbvf_ring *rx_ring) | |
454 | { | |
455 | struct pci_dev *pdev = adapter->pdev; | |
456 | int size, desc_len; | |
457 | ||
458 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
89bf67f1 | 459 | rx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
460 | if (!rx_ring->buffer_info) |
461 | goto err; | |
d4e0fe01 AD |
462 | |
463 | desc_len = sizeof(union e1000_adv_rx_desc); | |
464 | ||
465 | /* Round up to nearest 4K */ | |
466 | rx_ring->size = rx_ring->count * desc_len; | |
467 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
468 | ||
123e9f1a NN |
469 | rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, |
470 | &rx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
471 | |
472 | if (!rx_ring->desc) | |
473 | goto err; | |
474 | ||
475 | rx_ring->next_to_clean = 0; | |
476 | rx_ring->next_to_use = 0; | |
477 | ||
478 | rx_ring->adapter = adapter; | |
479 | ||
480 | return 0; | |
481 | ||
482 | err: | |
483 | vfree(rx_ring->buffer_info); | |
484 | rx_ring->buffer_info = NULL; | |
485 | dev_err(&adapter->pdev->dev, | |
486 | "Unable to allocate memory for the receive descriptor ring\n"); | |
487 | return -ENOMEM; | |
488 | } | |
489 | ||
490 | /** | |
491 | * igbvf_clean_tx_ring - Free Tx Buffers | |
492 | * @tx_ring: ring to be cleaned | |
493 | **/ | |
494 | static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring) | |
495 | { | |
496 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
497 | struct igbvf_buffer *buffer_info; | |
498 | unsigned long size; | |
499 | unsigned int i; | |
500 | ||
501 | if (!tx_ring->buffer_info) | |
502 | return; | |
503 | ||
504 | /* Free all the Tx ring sk_buffs */ | |
505 | for (i = 0; i < tx_ring->count; i++) { | |
506 | buffer_info = &tx_ring->buffer_info[i]; | |
507 | igbvf_put_txbuf(adapter, buffer_info); | |
508 | } | |
509 | ||
510 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
511 | memset(tx_ring->buffer_info, 0, size); | |
512 | ||
513 | /* Zero out the descriptor ring */ | |
514 | memset(tx_ring->desc, 0, tx_ring->size); | |
515 | ||
516 | tx_ring->next_to_use = 0; | |
517 | tx_ring->next_to_clean = 0; | |
518 | ||
519 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
520 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
521 | } | |
522 | ||
523 | /** | |
524 | * igbvf_free_tx_resources - Free Tx Resources per Queue | |
525 | * @tx_ring: ring to free resources from | |
526 | * | |
527 | * Free all transmit software resources | |
528 | **/ | |
529 | void igbvf_free_tx_resources(struct igbvf_ring *tx_ring) | |
530 | { | |
531 | struct pci_dev *pdev = tx_ring->adapter->pdev; | |
532 | ||
533 | igbvf_clean_tx_ring(tx_ring); | |
534 | ||
535 | vfree(tx_ring->buffer_info); | |
536 | tx_ring->buffer_info = NULL; | |
537 | ||
123e9f1a NN |
538 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
539 | tx_ring->dma); | |
d4e0fe01 AD |
540 | |
541 | tx_ring->desc = NULL; | |
542 | } | |
543 | ||
544 | /** | |
545 | * igbvf_clean_rx_ring - Free Rx Buffers per Queue | |
546 | * @adapter: board private structure | |
547 | **/ | |
548 | static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring) | |
549 | { | |
550 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
551 | struct igbvf_buffer *buffer_info; | |
552 | struct pci_dev *pdev = adapter->pdev; | |
553 | unsigned long size; | |
554 | unsigned int i; | |
555 | ||
556 | if (!rx_ring->buffer_info) | |
557 | return; | |
558 | ||
559 | /* Free all the Rx ring sk_buffs */ | |
560 | for (i = 0; i < rx_ring->count; i++) { | |
561 | buffer_info = &rx_ring->buffer_info[i]; | |
562 | if (buffer_info->dma) { | |
563 | if (adapter->rx_ps_hdr_size){ | |
123e9f1a | 564 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 565 | adapter->rx_ps_hdr_size, |
123e9f1a | 566 | DMA_FROM_DEVICE); |
d4e0fe01 | 567 | } else { |
123e9f1a | 568 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 569 | adapter->rx_buffer_len, |
123e9f1a | 570 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
571 | } |
572 | buffer_info->dma = 0; | |
573 | } | |
574 | ||
575 | if (buffer_info->skb) { | |
576 | dev_kfree_skb(buffer_info->skb); | |
577 | buffer_info->skb = NULL; | |
578 | } | |
579 | ||
580 | if (buffer_info->page) { | |
581 | if (buffer_info->page_dma) | |
123e9f1a NN |
582 | dma_unmap_page(&pdev->dev, |
583 | buffer_info->page_dma, | |
d4e0fe01 | 584 | PAGE_SIZE / 2, |
123e9f1a | 585 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
586 | put_page(buffer_info->page); |
587 | buffer_info->page = NULL; | |
588 | buffer_info->page_dma = 0; | |
589 | buffer_info->page_offset = 0; | |
590 | } | |
591 | } | |
592 | ||
593 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
594 | memset(rx_ring->buffer_info, 0, size); | |
595 | ||
596 | /* Zero out the descriptor ring */ | |
597 | memset(rx_ring->desc, 0, rx_ring->size); | |
598 | ||
599 | rx_ring->next_to_clean = 0; | |
600 | rx_ring->next_to_use = 0; | |
601 | ||
602 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
603 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
604 | } | |
605 | ||
606 | /** | |
607 | * igbvf_free_rx_resources - Free Rx Resources | |
608 | * @rx_ring: ring to clean the resources from | |
609 | * | |
610 | * Free all receive software resources | |
611 | **/ | |
612 | ||
613 | void igbvf_free_rx_resources(struct igbvf_ring *rx_ring) | |
614 | { | |
615 | struct pci_dev *pdev = rx_ring->adapter->pdev; | |
616 | ||
617 | igbvf_clean_rx_ring(rx_ring); | |
618 | ||
619 | vfree(rx_ring->buffer_info); | |
620 | rx_ring->buffer_info = NULL; | |
621 | ||
622 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
623 | rx_ring->dma); | |
624 | rx_ring->desc = NULL; | |
625 | } | |
626 | ||
627 | /** | |
628 | * igbvf_update_itr - update the dynamic ITR value based on statistics | |
629 | * @adapter: pointer to adapter | |
630 | * @itr_setting: current adapter->itr | |
631 | * @packets: the number of packets during this measurement interval | |
632 | * @bytes: the number of bytes during this measurement interval | |
633 | * | |
634 | * Stores a new ITR value based on packets and byte | |
635 | * counts during the last interrupt. The advantage of per interrupt | |
636 | * computation is faster updates and more accurate ITR for the current | |
637 | * traffic pattern. Constants in this function were computed | |
638 | * based on theoretical maximum wire speed and thresholds were set based | |
639 | * on testing data as well as attempting to minimize response time | |
ab50a2a4 | 640 | * while increasing bulk throughput. |
d4e0fe01 | 641 | **/ |
ab50a2a4 MW |
642 | static enum latency_range igbvf_update_itr(struct igbvf_adapter *adapter, |
643 | enum latency_range itr_setting, | |
644 | int packets, int bytes) | |
d4e0fe01 | 645 | { |
ab50a2a4 | 646 | enum latency_range retval = itr_setting; |
d4e0fe01 AD |
647 | |
648 | if (packets == 0) | |
649 | goto update_itr_done; | |
650 | ||
651 | switch (itr_setting) { | |
652 | case lowest_latency: | |
653 | /* handle TSO and jumbo frames */ | |
654 | if (bytes/packets > 8000) | |
655 | retval = bulk_latency; | |
656 | else if ((packets < 5) && (bytes > 512)) | |
657 | retval = low_latency; | |
658 | break; | |
659 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
660 | if (bytes > 10000) { | |
661 | /* this if handles the TSO accounting */ | |
662 | if (bytes/packets > 8000) | |
663 | retval = bulk_latency; | |
664 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
665 | retval = bulk_latency; | |
666 | else if ((packets > 35)) | |
667 | retval = lowest_latency; | |
668 | } else if (bytes/packets > 2000) { | |
669 | retval = bulk_latency; | |
670 | } else if (packets <= 2 && bytes < 512) { | |
671 | retval = lowest_latency; | |
672 | } | |
673 | break; | |
674 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
675 | if (bytes > 25000) { | |
676 | if (packets > 35) | |
677 | retval = low_latency; | |
678 | } else if (bytes < 6000) { | |
679 | retval = low_latency; | |
680 | } | |
681 | break; | |
ab50a2a4 MW |
682 | default: |
683 | break; | |
d4e0fe01 AD |
684 | } |
685 | ||
686 | update_itr_done: | |
687 | return retval; | |
688 | } | |
689 | ||
ab50a2a4 | 690 | static int igbvf_range_to_itr(enum latency_range current_range) |
d4e0fe01 | 691 | { |
ab50a2a4 | 692 | int new_itr; |
d4e0fe01 | 693 | |
ab50a2a4 | 694 | switch (current_range) { |
d4e0fe01 AD |
695 | /* counts and packets in update_itr are dependent on these numbers */ |
696 | case lowest_latency: | |
ab50a2a4 | 697 | new_itr = IGBVF_70K_ITR; |
d4e0fe01 AD |
698 | break; |
699 | case low_latency: | |
ab50a2a4 | 700 | new_itr = IGBVF_20K_ITR; |
d4e0fe01 AD |
701 | break; |
702 | case bulk_latency: | |
ab50a2a4 | 703 | new_itr = IGBVF_4K_ITR; |
d4e0fe01 AD |
704 | break; |
705 | default: | |
ab50a2a4 | 706 | new_itr = IGBVF_START_ITR; |
d4e0fe01 AD |
707 | break; |
708 | } | |
ab50a2a4 MW |
709 | return new_itr; |
710 | } | |
711 | ||
712 | static void igbvf_set_itr(struct igbvf_adapter *adapter) | |
713 | { | |
714 | u32 new_itr; | |
715 | ||
716 | adapter->tx_ring->itr_range = | |
717 | igbvf_update_itr(adapter, | |
718 | adapter->tx_ring->itr_val, | |
719 | adapter->total_tx_packets, | |
720 | adapter->total_tx_bytes); | |
721 | ||
722 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
723 | if (adapter->requested_itr == 3 && | |
724 | adapter->tx_ring->itr_range == lowest_latency) | |
725 | adapter->tx_ring->itr_range = low_latency; | |
d4e0fe01 | 726 | |
ab50a2a4 MW |
727 | new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range); |
728 | ||
729 | ||
730 | if (new_itr != adapter->tx_ring->itr_val) { | |
731 | u32 current_itr = adapter->tx_ring->itr_val; | |
d4e0fe01 AD |
732 | /* |
733 | * this attempts to bias the interrupt rate towards Bulk | |
734 | * by adding intermediate steps when interrupt rate is | |
735 | * increasing | |
736 | */ | |
ab50a2a4 MW |
737 | new_itr = new_itr > current_itr ? |
738 | min(current_itr + (new_itr >> 2), new_itr) : | |
739 | new_itr; | |
740 | adapter->tx_ring->itr_val = new_itr; | |
741 | ||
742 | adapter->tx_ring->set_itr = 1; | |
743 | } | |
744 | ||
745 | adapter->rx_ring->itr_range = | |
746 | igbvf_update_itr(adapter, adapter->rx_ring->itr_val, | |
747 | adapter->total_rx_packets, | |
748 | adapter->total_rx_bytes); | |
749 | if (adapter->requested_itr == 3 && | |
750 | adapter->rx_ring->itr_range == lowest_latency) | |
751 | adapter->rx_ring->itr_range = low_latency; | |
752 | ||
753 | new_itr = igbvf_range_to_itr(adapter->rx_ring->itr_range); | |
754 | ||
755 | if (new_itr != adapter->rx_ring->itr_val) { | |
756 | u32 current_itr = adapter->rx_ring->itr_val; | |
757 | new_itr = new_itr > current_itr ? | |
758 | min(current_itr + (new_itr >> 2), new_itr) : | |
759 | new_itr; | |
760 | adapter->rx_ring->itr_val = new_itr; | |
761 | ||
762 | adapter->rx_ring->set_itr = 1; | |
d4e0fe01 AD |
763 | } |
764 | } | |
765 | ||
766 | /** | |
767 | * igbvf_clean_tx_irq - Reclaim resources after transmit completes | |
768 | * @adapter: board private structure | |
769 | * returns true if ring is completely cleaned | |
770 | **/ | |
771 | static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring) | |
772 | { | |
773 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
d4e0fe01 AD |
774 | struct net_device *netdev = adapter->netdev; |
775 | struct igbvf_buffer *buffer_info; | |
776 | struct sk_buff *skb; | |
777 | union e1000_adv_tx_desc *tx_desc, *eop_desc; | |
778 | unsigned int total_bytes = 0, total_packets = 0; | |
779 | unsigned int i, eop, count = 0; | |
780 | bool cleaned = false; | |
781 | ||
782 | i = tx_ring->next_to_clean; | |
783 | eop = tx_ring->buffer_info[i].next_to_watch; | |
784 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
785 | ||
786 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
787 | (count < tx_ring->count)) { | |
2d0bb1c1 | 788 | rmb(); /* read buffer_info after eop_desc status */ |
d4e0fe01 AD |
789 | for (cleaned = false; !cleaned; count++) { |
790 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
791 | buffer_info = &tx_ring->buffer_info[i]; | |
792 | cleaned = (i == eop); | |
793 | skb = buffer_info->skb; | |
794 | ||
795 | if (skb) { | |
796 | unsigned int segs, bytecount; | |
797 | ||
798 | /* gso_segs is currently only valid for tcp */ | |
799 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
800 | /* multiply data chunks by size of headers */ | |
801 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
802 | skb->len; | |
803 | total_packets += segs; | |
804 | total_bytes += bytecount; | |
805 | } | |
806 | ||
807 | igbvf_put_txbuf(adapter, buffer_info); | |
808 | tx_desc->wb.status = 0; | |
809 | ||
810 | i++; | |
811 | if (i == tx_ring->count) | |
812 | i = 0; | |
813 | } | |
814 | eop = tx_ring->buffer_info[i].next_to_watch; | |
815 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
816 | } | |
817 | ||
818 | tx_ring->next_to_clean = i; | |
819 | ||
820 | if (unlikely(count && | |
821 | netif_carrier_ok(netdev) && | |
822 | igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) { | |
823 | /* Make sure that anybody stopping the queue after this | |
824 | * sees the new next_to_clean. | |
825 | */ | |
826 | smp_mb(); | |
827 | if (netif_queue_stopped(netdev) && | |
828 | !(test_bit(__IGBVF_DOWN, &adapter->state))) { | |
829 | netif_wake_queue(netdev); | |
830 | ++adapter->restart_queue; | |
831 | } | |
832 | } | |
833 | ||
d4e0fe01 AD |
834 | adapter->net_stats.tx_bytes += total_bytes; |
835 | adapter->net_stats.tx_packets += total_packets; | |
807540ba | 836 | return count < tx_ring->count; |
d4e0fe01 AD |
837 | } |
838 | ||
839 | static irqreturn_t igbvf_msix_other(int irq, void *data) | |
840 | { | |
841 | struct net_device *netdev = data; | |
842 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
843 | struct e1000_hw *hw = &adapter->hw; | |
844 | ||
845 | adapter->int_counter1++; | |
846 | ||
847 | netif_carrier_off(netdev); | |
848 | hw->mac.get_link_status = 1; | |
849 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
850 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
851 | ||
852 | ew32(EIMS, adapter->eims_other); | |
853 | ||
854 | return IRQ_HANDLED; | |
855 | } | |
856 | ||
857 | static irqreturn_t igbvf_intr_msix_tx(int irq, void *data) | |
858 | { | |
859 | struct net_device *netdev = data; | |
860 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
861 | struct e1000_hw *hw = &adapter->hw; | |
862 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
863 | ||
ab50a2a4 MW |
864 | if (tx_ring->set_itr) { |
865 | writel(tx_ring->itr_val, | |
866 | adapter->hw.hw_addr + tx_ring->itr_register); | |
867 | adapter->tx_ring->set_itr = 0; | |
868 | } | |
d4e0fe01 AD |
869 | |
870 | adapter->total_tx_bytes = 0; | |
871 | adapter->total_tx_packets = 0; | |
872 | ||
873 | /* auto mask will automatically reenable the interrupt when we write | |
874 | * EICS */ | |
875 | if (!igbvf_clean_tx_irq(tx_ring)) | |
876 | /* Ring was not completely cleaned, so fire another interrupt */ | |
877 | ew32(EICS, tx_ring->eims_value); | |
878 | else | |
879 | ew32(EIMS, tx_ring->eims_value); | |
880 | ||
881 | return IRQ_HANDLED; | |
882 | } | |
883 | ||
884 | static irqreturn_t igbvf_intr_msix_rx(int irq, void *data) | |
885 | { | |
886 | struct net_device *netdev = data; | |
887 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
888 | ||
889 | adapter->int_counter0++; | |
890 | ||
891 | /* Write the ITR value calculated at the end of the | |
892 | * previous interrupt. | |
893 | */ | |
894 | if (adapter->rx_ring->set_itr) { | |
895 | writel(adapter->rx_ring->itr_val, | |
896 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
897 | adapter->rx_ring->set_itr = 0; | |
898 | } | |
899 | ||
900 | if (napi_schedule_prep(&adapter->rx_ring->napi)) { | |
901 | adapter->total_rx_bytes = 0; | |
902 | adapter->total_rx_packets = 0; | |
903 | __napi_schedule(&adapter->rx_ring->napi); | |
904 | } | |
905 | ||
906 | return IRQ_HANDLED; | |
907 | } | |
908 | ||
909 | #define IGBVF_NO_QUEUE -1 | |
910 | ||
911 | static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue, | |
912 | int tx_queue, int msix_vector) | |
913 | { | |
914 | struct e1000_hw *hw = &adapter->hw; | |
915 | u32 ivar, index; | |
916 | ||
917 | /* 82576 uses a table-based method for assigning vectors. | |
918 | Each queue has a single entry in the table to which we write | |
919 | a vector number along with a "valid" bit. Sadly, the layout | |
920 | of the table is somewhat counterintuitive. */ | |
921 | if (rx_queue > IGBVF_NO_QUEUE) { | |
922 | index = (rx_queue >> 1); | |
923 | ivar = array_er32(IVAR0, index); | |
924 | if (rx_queue & 0x1) { | |
925 | /* vector goes into third byte of register */ | |
926 | ivar = ivar & 0xFF00FFFF; | |
927 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
928 | } else { | |
929 | /* vector goes into low byte of register */ | |
930 | ivar = ivar & 0xFFFFFF00; | |
931 | ivar |= msix_vector | E1000_IVAR_VALID; | |
932 | } | |
933 | adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector; | |
934 | array_ew32(IVAR0, index, ivar); | |
935 | } | |
936 | if (tx_queue > IGBVF_NO_QUEUE) { | |
937 | index = (tx_queue >> 1); | |
938 | ivar = array_er32(IVAR0, index); | |
939 | if (tx_queue & 0x1) { | |
940 | /* vector goes into high byte of register */ | |
941 | ivar = ivar & 0x00FFFFFF; | |
942 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
943 | } else { | |
944 | /* vector goes into second byte of register */ | |
945 | ivar = ivar & 0xFFFF00FF; | |
946 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
947 | } | |
948 | adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector; | |
949 | array_ew32(IVAR0, index, ivar); | |
950 | } | |
951 | } | |
952 | ||
953 | /** | |
954 | * igbvf_configure_msix - Configure MSI-X hardware | |
955 | * | |
956 | * igbvf_configure_msix sets up the hardware to properly | |
957 | * generate MSI-X interrupts. | |
958 | **/ | |
959 | static void igbvf_configure_msix(struct igbvf_adapter *adapter) | |
960 | { | |
961 | u32 tmp; | |
962 | struct e1000_hw *hw = &adapter->hw; | |
963 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
964 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
965 | int vector = 0; | |
966 | ||
967 | adapter->eims_enable_mask = 0; | |
968 | ||
969 | igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++); | |
970 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
ab50a2a4 | 971 | writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register); |
d4e0fe01 AD |
972 | igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++); |
973 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
ab50a2a4 | 974 | writel(rx_ring->itr_val, hw->hw_addr + rx_ring->itr_register); |
d4e0fe01 AD |
975 | |
976 | /* set vector for other causes, i.e. link changes */ | |
977 | ||
978 | tmp = (vector++ | E1000_IVAR_VALID); | |
979 | ||
980 | ew32(IVAR_MISC, tmp); | |
981 | ||
982 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
983 | adapter->eims_other = 1 << (vector - 1); | |
984 | e1e_flush(); | |
985 | } | |
986 | ||
2d165771 | 987 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
988 | { |
989 | if (adapter->msix_entries) { | |
990 | pci_disable_msix(adapter->pdev); | |
991 | kfree(adapter->msix_entries); | |
992 | adapter->msix_entries = NULL; | |
993 | } | |
994 | } | |
995 | ||
996 | /** | |
997 | * igbvf_set_interrupt_capability - set MSI or MSI-X if supported | |
998 | * | |
999 | * Attempt to configure interrupts using the best available | |
1000 | * capabilities of the hardware and kernel. | |
1001 | **/ | |
2d165771 | 1002 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1003 | { |
1004 | int err = -ENOMEM; | |
1005 | int i; | |
1006 | ||
1007 | /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */ | |
1008 | adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry), | |
1009 | GFP_KERNEL); | |
1010 | if (adapter->msix_entries) { | |
1011 | for (i = 0; i < 3; i++) | |
1012 | adapter->msix_entries[i].entry = i; | |
1013 | ||
1014 | err = pci_enable_msix(adapter->pdev, | |
1015 | adapter->msix_entries, 3); | |
1016 | } | |
1017 | ||
1018 | if (err) { | |
1019 | /* MSI-X failed */ | |
1020 | dev_err(&adapter->pdev->dev, | |
1021 | "Failed to initialize MSI-X interrupts.\n"); | |
1022 | igbvf_reset_interrupt_capability(adapter); | |
1023 | } | |
1024 | } | |
1025 | ||
1026 | /** | |
1027 | * igbvf_request_msix - Initialize MSI-X interrupts | |
1028 | * | |
1029 | * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the | |
1030 | * kernel. | |
1031 | **/ | |
1032 | static int igbvf_request_msix(struct igbvf_adapter *adapter) | |
1033 | { | |
1034 | struct net_device *netdev = adapter->netdev; | |
1035 | int err = 0, vector = 0; | |
1036 | ||
1037 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) { | |
1038 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); | |
1039 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); | |
1040 | } else { | |
1041 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1042 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1043 | } | |
1044 | ||
1045 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1046 | igbvf_intr_msix_tx, 0, adapter->tx_ring->name, |
d4e0fe01 AD |
1047 | netdev); |
1048 | if (err) | |
1049 | goto out; | |
1050 | ||
1051 | adapter->tx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1052 | adapter->tx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1053 | vector++; |
1054 | ||
1055 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1056 | igbvf_intr_msix_rx, 0, adapter->rx_ring->name, |
d4e0fe01 AD |
1057 | netdev); |
1058 | if (err) | |
1059 | goto out; | |
1060 | ||
1061 | adapter->rx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1062 | adapter->rx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1063 | vector++; |
1064 | ||
1065 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1066 | igbvf_msix_other, 0, netdev->name, netdev); |
d4e0fe01 AD |
1067 | if (err) |
1068 | goto out; | |
1069 | ||
1070 | igbvf_configure_msix(adapter); | |
1071 | return 0; | |
1072 | out: | |
1073 | return err; | |
1074 | } | |
1075 | ||
1076 | /** | |
1077 | * igbvf_alloc_queues - Allocate memory for all rings | |
1078 | * @adapter: board private structure to initialize | |
1079 | **/ | |
1080 | static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter) | |
1081 | { | |
1082 | struct net_device *netdev = adapter->netdev; | |
1083 | ||
1084 | adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1085 | if (!adapter->tx_ring) | |
1086 | return -ENOMEM; | |
1087 | ||
1088 | adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1089 | if (!adapter->rx_ring) { | |
1090 | kfree(adapter->tx_ring); | |
1091 | return -ENOMEM; | |
1092 | } | |
1093 | ||
1094 | netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64); | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | /** | |
1100 | * igbvf_request_irq - initialize interrupts | |
1101 | * | |
1102 | * Attempts to configure interrupts using the best available | |
1103 | * capabilities of the hardware and kernel. | |
1104 | **/ | |
1105 | static int igbvf_request_irq(struct igbvf_adapter *adapter) | |
1106 | { | |
1107 | int err = -1; | |
1108 | ||
1109 | /* igbvf supports msi-x only */ | |
1110 | if (adapter->msix_entries) | |
1111 | err = igbvf_request_msix(adapter); | |
1112 | ||
1113 | if (!err) | |
1114 | return err; | |
1115 | ||
1116 | dev_err(&adapter->pdev->dev, | |
1117 | "Unable to allocate interrupt, Error: %d\n", err); | |
1118 | ||
1119 | return err; | |
1120 | } | |
1121 | ||
1122 | static void igbvf_free_irq(struct igbvf_adapter *adapter) | |
1123 | { | |
1124 | struct net_device *netdev = adapter->netdev; | |
1125 | int vector; | |
1126 | ||
1127 | if (adapter->msix_entries) { | |
1128 | for (vector = 0; vector < 3; vector++) | |
1129 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | /** | |
1134 | * igbvf_irq_disable - Mask off interrupt generation on the NIC | |
1135 | **/ | |
1136 | static void igbvf_irq_disable(struct igbvf_adapter *adapter) | |
1137 | { | |
1138 | struct e1000_hw *hw = &adapter->hw; | |
1139 | ||
1140 | ew32(EIMC, ~0); | |
1141 | ||
1142 | if (adapter->msix_entries) | |
1143 | ew32(EIAC, 0); | |
1144 | } | |
1145 | ||
1146 | /** | |
1147 | * igbvf_irq_enable - Enable default interrupt generation settings | |
1148 | **/ | |
1149 | static void igbvf_irq_enable(struct igbvf_adapter *adapter) | |
1150 | { | |
1151 | struct e1000_hw *hw = &adapter->hw; | |
1152 | ||
1153 | ew32(EIAC, adapter->eims_enable_mask); | |
1154 | ew32(EIAM, adapter->eims_enable_mask); | |
1155 | ew32(EIMS, adapter->eims_enable_mask); | |
1156 | } | |
1157 | ||
1158 | /** | |
1159 | * igbvf_poll - NAPI Rx polling callback | |
1160 | * @napi: struct associated with this polling callback | |
1161 | * @budget: amount of packets driver is allowed to process this poll | |
1162 | **/ | |
1163 | static int igbvf_poll(struct napi_struct *napi, int budget) | |
1164 | { | |
1165 | struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi); | |
1166 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
1167 | struct e1000_hw *hw = &adapter->hw; | |
1168 | int work_done = 0; | |
1169 | ||
1170 | igbvf_clean_rx_irq(adapter, &work_done, budget); | |
1171 | ||
1172 | /* If not enough Rx work done, exit the polling mode */ | |
1173 | if (work_done < budget) { | |
1174 | napi_complete(napi); | |
1175 | ||
ab50a2a4 | 1176 | if (adapter->requested_itr & 3) |
d4e0fe01 AD |
1177 | igbvf_set_itr(adapter); |
1178 | ||
1179 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1180 | ew32(EIMS, adapter->rx_ring->eims_value); | |
1181 | } | |
1182 | ||
1183 | return work_done; | |
1184 | } | |
1185 | ||
1186 | /** | |
1187 | * igbvf_set_rlpml - set receive large packet maximum length | |
1188 | * @adapter: board private structure | |
1189 | * | |
1190 | * Configure the maximum size of packets that will be received | |
1191 | */ | |
1192 | static void igbvf_set_rlpml(struct igbvf_adapter *adapter) | |
1193 | { | |
a0f1d603 | 1194 | int max_frame_size; |
d4e0fe01 AD |
1195 | struct e1000_hw *hw = &adapter->hw; |
1196 | ||
a0f1d603 | 1197 | max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE; |
d4e0fe01 AD |
1198 | e1000_rlpml_set_vf(hw, max_frame_size); |
1199 | } | |
1200 | ||
8e586137 | 1201 | static int igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
d4e0fe01 AD |
1202 | { |
1203 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1204 | struct e1000_hw *hw = &adapter->hw; | |
1205 | ||
8e586137 | 1206 | if (hw->mac.ops.set_vfta(hw, vid, true)) { |
d4e0fe01 | 1207 | dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid); |
8e586137 JP |
1208 | return -EINVAL; |
1209 | } | |
1210 | set_bit(vid, adapter->active_vlans); | |
1211 | return 0; | |
d4e0fe01 AD |
1212 | } |
1213 | ||
8e586137 | 1214 | static int igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
d4e0fe01 AD |
1215 | { |
1216 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1217 | struct e1000_hw *hw = &adapter->hw; | |
1218 | ||
8e586137 | 1219 | if (hw->mac.ops.set_vfta(hw, vid, false)) { |
d4e0fe01 AD |
1220 | dev_err(&adapter->pdev->dev, |
1221 | "Failed to remove vlan id %d\n", vid); | |
8e586137 JP |
1222 | return -EINVAL; |
1223 | } | |
1224 | clear_bit(vid, adapter->active_vlans); | |
1225 | return 0; | |
d4e0fe01 AD |
1226 | } |
1227 | ||
1228 | static void igbvf_restore_vlan(struct igbvf_adapter *adapter) | |
1229 | { | |
1230 | u16 vid; | |
1231 | ||
a0f1d603 | 1232 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
d4e0fe01 | 1233 | igbvf_vlan_rx_add_vid(adapter->netdev, vid); |
d4e0fe01 AD |
1234 | } |
1235 | ||
1236 | /** | |
1237 | * igbvf_configure_tx - Configure Transmit Unit after Reset | |
1238 | * @adapter: board private structure | |
1239 | * | |
1240 | * Configure the Tx unit of the MAC after a reset. | |
1241 | **/ | |
1242 | static void igbvf_configure_tx(struct igbvf_adapter *adapter) | |
1243 | { | |
1244 | struct e1000_hw *hw = &adapter->hw; | |
1245 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1246 | u64 tdba; | |
1247 | u32 txdctl, dca_txctrl; | |
1248 | ||
1249 | /* disable transmits */ | |
1250 | txdctl = er32(TXDCTL(0)); | |
1251 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
945a5151 | 1252 | e1e_flush(); |
d4e0fe01 AD |
1253 | msleep(10); |
1254 | ||
1255 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1256 | ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc)); | |
1257 | tdba = tx_ring->dma; | |
8e20ce94 | 1258 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1259 | ew32(TDBAH(0), (tdba >> 32)); |
1260 | ew32(TDH(0), 0); | |
1261 | ew32(TDT(0), 0); | |
1262 | tx_ring->head = E1000_TDH(0); | |
1263 | tx_ring->tail = E1000_TDT(0); | |
1264 | ||
1265 | /* Turn off Relaxed Ordering on head write-backs. The writebacks | |
1266 | * MUST be delivered in order or it will completely screw up | |
1267 | * our bookeeping. | |
1268 | */ | |
1269 | dca_txctrl = er32(DCA_TXCTRL(0)); | |
1270 | dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; | |
1271 | ew32(DCA_TXCTRL(0), dca_txctrl); | |
1272 | ||
1273 | /* enable transmits */ | |
1274 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
1275 | ew32(TXDCTL(0), txdctl); | |
1276 | ||
1277 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1278 | adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS; | |
1279 | ||
1280 | /* enable Report Status bit */ | |
1281 | adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS; | |
d4e0fe01 AD |
1282 | } |
1283 | ||
1284 | /** | |
1285 | * igbvf_setup_srrctl - configure the receive control registers | |
1286 | * @adapter: Board private structure | |
1287 | **/ | |
1288 | static void igbvf_setup_srrctl(struct igbvf_adapter *adapter) | |
1289 | { | |
1290 | struct e1000_hw *hw = &adapter->hw; | |
1291 | u32 srrctl = 0; | |
1292 | ||
1293 | srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK | | |
1294 | E1000_SRRCTL_BSIZEHDR_MASK | | |
1295 | E1000_SRRCTL_BSIZEPKT_MASK); | |
1296 | ||
1297 | /* Enable queue drop to avoid head of line blocking */ | |
1298 | srrctl |= E1000_SRRCTL_DROP_EN; | |
1299 | ||
1300 | /* Setup buffer sizes */ | |
1301 | srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >> | |
1302 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1303 | ||
1304 | if (adapter->rx_buffer_len < 2048) { | |
1305 | adapter->rx_ps_hdr_size = 0; | |
1306 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1307 | } else { | |
1308 | adapter->rx_ps_hdr_size = 128; | |
1309 | srrctl |= adapter->rx_ps_hdr_size << | |
1310 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; | |
1311 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1312 | } | |
1313 | ||
1314 | ew32(SRRCTL(0), srrctl); | |
1315 | } | |
1316 | ||
1317 | /** | |
1318 | * igbvf_configure_rx - Configure Receive Unit after Reset | |
1319 | * @adapter: board private structure | |
1320 | * | |
1321 | * Configure the Rx unit of the MAC after a reset. | |
1322 | **/ | |
1323 | static void igbvf_configure_rx(struct igbvf_adapter *adapter) | |
1324 | { | |
1325 | struct e1000_hw *hw = &adapter->hw; | |
1326 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
1327 | u64 rdba; | |
1328 | u32 rdlen, rxdctl; | |
1329 | ||
1330 | /* disable receives */ | |
1331 | rxdctl = er32(RXDCTL(0)); | |
1332 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
945a5151 | 1333 | e1e_flush(); |
d4e0fe01 AD |
1334 | msleep(10); |
1335 | ||
1336 | rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc); | |
1337 | ||
1338 | /* | |
1339 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
1340 | * the Base and Length of the Rx Descriptor Ring | |
1341 | */ | |
1342 | rdba = rx_ring->dma; | |
8e20ce94 | 1343 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1344 | ew32(RDBAH(0), (rdba >> 32)); |
1345 | ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc)); | |
1346 | rx_ring->head = E1000_RDH(0); | |
1347 | rx_ring->tail = E1000_RDT(0); | |
1348 | ew32(RDH(0), 0); | |
1349 | ew32(RDT(0), 0); | |
1350 | ||
1351 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
1352 | rxdctl &= 0xFFF00000; | |
1353 | rxdctl |= IGBVF_RX_PTHRESH; | |
1354 | rxdctl |= IGBVF_RX_HTHRESH << 8; | |
1355 | rxdctl |= IGBVF_RX_WTHRESH << 16; | |
1356 | ||
1357 | igbvf_set_rlpml(adapter); | |
1358 | ||
1359 | /* enable receives */ | |
1360 | ew32(RXDCTL(0), rxdctl); | |
1361 | } | |
1362 | ||
1363 | /** | |
1364 | * igbvf_set_multi - Multicast and Promiscuous mode set | |
1365 | * @netdev: network interface device structure | |
1366 | * | |
1367 | * The set_multi entry point is called whenever the multicast address | |
1368 | * list or the network interface flags are updated. This routine is | |
1369 | * responsible for configuring the hardware for proper multicast, | |
1370 | * promiscuous mode, and all-multi behavior. | |
1371 | **/ | |
1372 | static void igbvf_set_multi(struct net_device *netdev) | |
1373 | { | |
1374 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1375 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 1376 | struct netdev_hw_addr *ha; |
d4e0fe01 AD |
1377 | u8 *mta_list = NULL; |
1378 | int i; | |
1379 | ||
4cd24eaf JP |
1380 | if (!netdev_mc_empty(netdev)) { |
1381 | mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); | |
d4e0fe01 AD |
1382 | if (!mta_list) { |
1383 | dev_err(&adapter->pdev->dev, | |
1384 | "failed to allocate multicast filter list\n"); | |
1385 | return; | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | /* prepare a packed array of only addresses. */ | |
48e2f183 | 1390 | i = 0; |
22bedad3 JP |
1391 | netdev_for_each_mc_addr(ha, netdev) |
1392 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
d4e0fe01 AD |
1393 | |
1394 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0); | |
1395 | kfree(mta_list); | |
1396 | } | |
1397 | ||
1398 | /** | |
1399 | * igbvf_configure - configure the hardware for Rx and Tx | |
1400 | * @adapter: private board structure | |
1401 | **/ | |
1402 | static void igbvf_configure(struct igbvf_adapter *adapter) | |
1403 | { | |
1404 | igbvf_set_multi(adapter->netdev); | |
1405 | ||
1406 | igbvf_restore_vlan(adapter); | |
1407 | ||
1408 | igbvf_configure_tx(adapter); | |
1409 | igbvf_setup_srrctl(adapter); | |
1410 | igbvf_configure_rx(adapter); | |
1411 | igbvf_alloc_rx_buffers(adapter->rx_ring, | |
1412 | igbvf_desc_unused(adapter->rx_ring)); | |
1413 | } | |
1414 | ||
1415 | /* igbvf_reset - bring the hardware into a known good state | |
1416 | * | |
1417 | * This function boots the hardware and enables some settings that | |
1418 | * require a configuration cycle of the hardware - those cannot be | |
1419 | * set/changed during runtime. After reset the device needs to be | |
1420 | * properly configured for Rx, Tx etc. | |
1421 | */ | |
2d165771 | 1422 | static void igbvf_reset(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1423 | { |
1424 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1425 | struct net_device *netdev = adapter->netdev; | |
1426 | struct e1000_hw *hw = &adapter->hw; | |
1427 | ||
1428 | /* Allow time for pending master requests to run */ | |
1429 | if (mac->ops.reset_hw(hw)) | |
1430 | dev_err(&adapter->pdev->dev, "PF still resetting\n"); | |
1431 | ||
1432 | mac->ops.init_hw(hw); | |
1433 | ||
1434 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1435 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1436 | netdev->addr_len); | |
1437 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1438 | netdev->addr_len); | |
1439 | } | |
72279093 AD |
1440 | |
1441 | adapter->last_reset = jiffies; | |
d4e0fe01 AD |
1442 | } |
1443 | ||
1444 | int igbvf_up(struct igbvf_adapter *adapter) | |
1445 | { | |
1446 | struct e1000_hw *hw = &adapter->hw; | |
1447 | ||
1448 | /* hardware has been reset, we need to reload some things */ | |
1449 | igbvf_configure(adapter); | |
1450 | ||
1451 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1452 | ||
1453 | napi_enable(&adapter->rx_ring->napi); | |
1454 | if (adapter->msix_entries) | |
1455 | igbvf_configure_msix(adapter); | |
1456 | ||
1457 | /* Clear any pending interrupts. */ | |
1458 | er32(EICR); | |
1459 | igbvf_irq_enable(adapter); | |
1460 | ||
1461 | /* start the watchdog */ | |
1462 | hw->mac.get_link_status = 1; | |
1463 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1464 | ||
1465 | ||
1466 | return 0; | |
1467 | } | |
1468 | ||
1469 | void igbvf_down(struct igbvf_adapter *adapter) | |
1470 | { | |
1471 | struct net_device *netdev = adapter->netdev; | |
1472 | struct e1000_hw *hw = &adapter->hw; | |
1473 | u32 rxdctl, txdctl; | |
1474 | ||
1475 | /* | |
1476 | * signal that we're down so the interrupt handler does not | |
1477 | * reschedule our watchdog timer | |
1478 | */ | |
1479 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1480 | ||
1481 | /* disable receives in the hardware */ | |
1482 | rxdctl = er32(RXDCTL(0)); | |
1483 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1484 | ||
1485 | netif_stop_queue(netdev); | |
1486 | ||
1487 | /* disable transmits in the hardware */ | |
1488 | txdctl = er32(TXDCTL(0)); | |
1489 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1490 | ||
1491 | /* flush both disables and wait for them to finish */ | |
1492 | e1e_flush(); | |
1493 | msleep(10); | |
1494 | ||
1495 | napi_disable(&adapter->rx_ring->napi); | |
1496 | ||
1497 | igbvf_irq_disable(adapter); | |
1498 | ||
1499 | del_timer_sync(&adapter->watchdog_timer); | |
1500 | ||
d4e0fe01 AD |
1501 | netif_carrier_off(netdev); |
1502 | ||
1503 | /* record the stats before reset*/ | |
1504 | igbvf_update_stats(adapter); | |
1505 | ||
1506 | adapter->link_speed = 0; | |
1507 | adapter->link_duplex = 0; | |
1508 | ||
1509 | igbvf_reset(adapter); | |
1510 | igbvf_clean_tx_ring(adapter->tx_ring); | |
1511 | igbvf_clean_rx_ring(adapter->rx_ring); | |
1512 | } | |
1513 | ||
1514 | void igbvf_reinit_locked(struct igbvf_adapter *adapter) | |
1515 | { | |
1516 | might_sleep(); | |
1517 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
1518 | msleep(1); | |
1519 | igbvf_down(adapter); | |
1520 | igbvf_up(adapter); | |
1521 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
1522 | } | |
1523 | ||
1524 | /** | |
1525 | * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter) | |
1526 | * @adapter: board private structure to initialize | |
1527 | * | |
1528 | * igbvf_sw_init initializes the Adapter private data structure. | |
1529 | * Fields are initialized based on PCI device information and | |
1530 | * OS network device settings (MTU size). | |
1531 | **/ | |
1532 | static int __devinit igbvf_sw_init(struct igbvf_adapter *adapter) | |
1533 | { | |
1534 | struct net_device *netdev = adapter->netdev; | |
1535 | s32 rc; | |
1536 | ||
1537 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
1538 | adapter->rx_ps_hdr_size = 0; | |
1539 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1540 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1541 | ||
1542 | adapter->tx_int_delay = 8; | |
1543 | adapter->tx_abs_int_delay = 32; | |
1544 | adapter->rx_int_delay = 0; | |
1545 | adapter->rx_abs_int_delay = 8; | |
ab50a2a4 MW |
1546 | adapter->requested_itr = 3; |
1547 | adapter->current_itr = IGBVF_START_ITR; | |
d4e0fe01 AD |
1548 | |
1549 | /* Set various function pointers */ | |
1550 | adapter->ei->init_ops(&adapter->hw); | |
1551 | ||
1552 | rc = adapter->hw.mac.ops.init_params(&adapter->hw); | |
1553 | if (rc) | |
1554 | return rc; | |
1555 | ||
1556 | rc = adapter->hw.mbx.ops.init_params(&adapter->hw); | |
1557 | if (rc) | |
1558 | return rc; | |
1559 | ||
1560 | igbvf_set_interrupt_capability(adapter); | |
1561 | ||
1562 | if (igbvf_alloc_queues(adapter)) | |
1563 | return -ENOMEM; | |
1564 | ||
1565 | spin_lock_init(&adapter->tx_queue_lock); | |
1566 | ||
1567 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1568 | igbvf_irq_disable(adapter); | |
1569 | ||
1570 | spin_lock_init(&adapter->stats_lock); | |
1571 | ||
1572 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1573 | return 0; | |
1574 | } | |
1575 | ||
1576 | static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter) | |
1577 | { | |
1578 | struct e1000_hw *hw = &adapter->hw; | |
1579 | ||
1580 | adapter->stats.last_gprc = er32(VFGPRC); | |
1581 | adapter->stats.last_gorc = er32(VFGORC); | |
1582 | adapter->stats.last_gptc = er32(VFGPTC); | |
1583 | adapter->stats.last_gotc = er32(VFGOTC); | |
1584 | adapter->stats.last_mprc = er32(VFMPRC); | |
1585 | adapter->stats.last_gotlbc = er32(VFGOTLBC); | |
1586 | adapter->stats.last_gptlbc = er32(VFGPTLBC); | |
1587 | adapter->stats.last_gorlbc = er32(VFGORLBC); | |
1588 | adapter->stats.last_gprlbc = er32(VFGPRLBC); | |
1589 | ||
1590 | adapter->stats.base_gprc = er32(VFGPRC); | |
1591 | adapter->stats.base_gorc = er32(VFGORC); | |
1592 | adapter->stats.base_gptc = er32(VFGPTC); | |
1593 | adapter->stats.base_gotc = er32(VFGOTC); | |
1594 | adapter->stats.base_mprc = er32(VFMPRC); | |
1595 | adapter->stats.base_gotlbc = er32(VFGOTLBC); | |
1596 | adapter->stats.base_gptlbc = er32(VFGPTLBC); | |
1597 | adapter->stats.base_gorlbc = er32(VFGORLBC); | |
1598 | adapter->stats.base_gprlbc = er32(VFGPRLBC); | |
1599 | } | |
1600 | ||
1601 | /** | |
1602 | * igbvf_open - Called when a network interface is made active | |
1603 | * @netdev: network interface device structure | |
1604 | * | |
1605 | * Returns 0 on success, negative value on failure | |
1606 | * | |
1607 | * The open entry point is called when a network interface is made | |
1608 | * active by the system (IFF_UP). At this point all resources needed | |
1609 | * for transmit and receive operations are allocated, the interrupt | |
1610 | * handler is registered with the OS, the watchdog timer is started, | |
1611 | * and the stack is notified that the interface is ready. | |
1612 | **/ | |
1613 | static int igbvf_open(struct net_device *netdev) | |
1614 | { | |
1615 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1616 | struct e1000_hw *hw = &adapter->hw; | |
1617 | int err; | |
1618 | ||
1619 | /* disallow open during test */ | |
1620 | if (test_bit(__IGBVF_TESTING, &adapter->state)) | |
1621 | return -EBUSY; | |
1622 | ||
1623 | /* allocate transmit descriptors */ | |
1624 | err = igbvf_setup_tx_resources(adapter, adapter->tx_ring); | |
1625 | if (err) | |
1626 | goto err_setup_tx; | |
1627 | ||
1628 | /* allocate receive descriptors */ | |
1629 | err = igbvf_setup_rx_resources(adapter, adapter->rx_ring); | |
1630 | if (err) | |
1631 | goto err_setup_rx; | |
1632 | ||
1633 | /* | |
1634 | * before we allocate an interrupt, we must be ready to handle it. | |
1635 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1636 | * as soon as we call pci_request_irq, so we have to setup our | |
1637 | * clean_rx handler before we do so. | |
1638 | */ | |
1639 | igbvf_configure(adapter); | |
1640 | ||
1641 | err = igbvf_request_irq(adapter); | |
1642 | if (err) | |
1643 | goto err_req_irq; | |
1644 | ||
1645 | /* From here on the code is the same as igbvf_up() */ | |
1646 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1647 | ||
1648 | napi_enable(&adapter->rx_ring->napi); | |
1649 | ||
1650 | /* clear any pending interrupts */ | |
1651 | er32(EICR); | |
1652 | ||
1653 | igbvf_irq_enable(adapter); | |
1654 | ||
1655 | /* start the watchdog */ | |
1656 | hw->mac.get_link_status = 1; | |
1657 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1658 | ||
1659 | return 0; | |
1660 | ||
1661 | err_req_irq: | |
1662 | igbvf_free_rx_resources(adapter->rx_ring); | |
1663 | err_setup_rx: | |
1664 | igbvf_free_tx_resources(adapter->tx_ring); | |
1665 | err_setup_tx: | |
1666 | igbvf_reset(adapter); | |
1667 | ||
1668 | return err; | |
1669 | } | |
1670 | ||
1671 | /** | |
1672 | * igbvf_close - Disables a network interface | |
1673 | * @netdev: network interface device structure | |
1674 | * | |
1675 | * Returns 0, this is not allowed to fail | |
1676 | * | |
1677 | * The close entry point is called when an interface is de-activated | |
1678 | * by the OS. The hardware is still under the drivers control, but | |
1679 | * needs to be disabled. A global MAC reset is issued to stop the | |
1680 | * hardware, and all transmit and receive resources are freed. | |
1681 | **/ | |
1682 | static int igbvf_close(struct net_device *netdev) | |
1683 | { | |
1684 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1685 | ||
1686 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
1687 | igbvf_down(adapter); | |
1688 | ||
1689 | igbvf_free_irq(adapter); | |
1690 | ||
1691 | igbvf_free_tx_resources(adapter->tx_ring); | |
1692 | igbvf_free_rx_resources(adapter->rx_ring); | |
1693 | ||
1694 | return 0; | |
1695 | } | |
1696 | /** | |
1697 | * igbvf_set_mac - Change the Ethernet Address of the NIC | |
1698 | * @netdev: network interface device structure | |
1699 | * @p: pointer to an address structure | |
1700 | * | |
1701 | * Returns 0 on success, negative on failure | |
1702 | **/ | |
1703 | static int igbvf_set_mac(struct net_device *netdev, void *p) | |
1704 | { | |
1705 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1706 | struct e1000_hw *hw = &adapter->hw; | |
1707 | struct sockaddr *addr = p; | |
1708 | ||
1709 | if (!is_valid_ether_addr(addr->sa_data)) | |
1710 | return -EADDRNOTAVAIL; | |
1711 | ||
1712 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
1713 | ||
1714 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); | |
1715 | ||
1716 | if (memcmp(addr->sa_data, hw->mac.addr, 6)) | |
1717 | return -EADDRNOTAVAIL; | |
1718 | ||
1719 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
067fb4c8 | 1720 | netdev->addr_assign_type &= ~NET_ADDR_RANDOM; |
d4e0fe01 AD |
1721 | |
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | #define UPDATE_VF_COUNTER(reg, name) \ | |
1726 | { \ | |
1727 | u32 current_counter = er32(reg); \ | |
1728 | if (current_counter < adapter->stats.last_##name) \ | |
1729 | adapter->stats.name += 0x100000000LL; \ | |
1730 | adapter->stats.last_##name = current_counter; \ | |
1731 | adapter->stats.name &= 0xFFFFFFFF00000000LL; \ | |
1732 | adapter->stats.name |= current_counter; \ | |
1733 | } | |
1734 | ||
1735 | /** | |
1736 | * igbvf_update_stats - Update the board statistics counters | |
1737 | * @adapter: board private structure | |
1738 | **/ | |
1739 | void igbvf_update_stats(struct igbvf_adapter *adapter) | |
1740 | { | |
1741 | struct e1000_hw *hw = &adapter->hw; | |
1742 | struct pci_dev *pdev = adapter->pdev; | |
1743 | ||
1744 | /* | |
1745 | * Prevent stats update while adapter is being reset, link is down | |
1746 | * or if the pci connection is down. | |
1747 | */ | |
1748 | if (adapter->link_speed == 0) | |
1749 | return; | |
1750 | ||
1751 | if (test_bit(__IGBVF_RESETTING, &adapter->state)) | |
1752 | return; | |
1753 | ||
1754 | if (pci_channel_offline(pdev)) | |
1755 | return; | |
1756 | ||
1757 | UPDATE_VF_COUNTER(VFGPRC, gprc); | |
1758 | UPDATE_VF_COUNTER(VFGORC, gorc); | |
1759 | UPDATE_VF_COUNTER(VFGPTC, gptc); | |
1760 | UPDATE_VF_COUNTER(VFGOTC, gotc); | |
1761 | UPDATE_VF_COUNTER(VFMPRC, mprc); | |
1762 | UPDATE_VF_COUNTER(VFGOTLBC, gotlbc); | |
1763 | UPDATE_VF_COUNTER(VFGPTLBC, gptlbc); | |
1764 | UPDATE_VF_COUNTER(VFGORLBC, gorlbc); | |
1765 | UPDATE_VF_COUNTER(VFGPRLBC, gprlbc); | |
1766 | ||
1767 | /* Fill out the OS statistics structure */ | |
1768 | adapter->net_stats.multicast = adapter->stats.mprc; | |
1769 | } | |
1770 | ||
1771 | static void igbvf_print_link_info(struct igbvf_adapter *adapter) | |
1772 | { | |
a4ba8cbe JK |
1773 | dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s Duplex\n", |
1774 | adapter->link_speed, | |
1775 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half"); | |
d4e0fe01 AD |
1776 | } |
1777 | ||
1778 | static bool igbvf_has_link(struct igbvf_adapter *adapter) | |
1779 | { | |
1780 | struct e1000_hw *hw = &adapter->hw; | |
1781 | s32 ret_val = E1000_SUCCESS; | |
1782 | bool link_active; | |
1783 | ||
72279093 AD |
1784 | /* If interface is down, stay link down */ |
1785 | if (test_bit(__IGBVF_DOWN, &adapter->state)) | |
1786 | return false; | |
1787 | ||
d4e0fe01 AD |
1788 | ret_val = hw->mac.ops.check_for_link(hw); |
1789 | link_active = !hw->mac.get_link_status; | |
1790 | ||
1791 | /* if check for link returns error we will need to reset */ | |
72279093 | 1792 | if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ))) |
d4e0fe01 AD |
1793 | schedule_work(&adapter->reset_task); |
1794 | ||
1795 | return link_active; | |
1796 | } | |
1797 | ||
1798 | /** | |
1799 | * igbvf_watchdog - Timer Call-back | |
1800 | * @data: pointer to adapter cast into an unsigned long | |
1801 | **/ | |
1802 | static void igbvf_watchdog(unsigned long data) | |
1803 | { | |
1804 | struct igbvf_adapter *adapter = (struct igbvf_adapter *) data; | |
1805 | ||
1806 | /* Do the rest outside of interrupt context */ | |
1807 | schedule_work(&adapter->watchdog_task); | |
1808 | } | |
1809 | ||
1810 | static void igbvf_watchdog_task(struct work_struct *work) | |
1811 | { | |
1812 | struct igbvf_adapter *adapter = container_of(work, | |
1813 | struct igbvf_adapter, | |
1814 | watchdog_task); | |
1815 | struct net_device *netdev = adapter->netdev; | |
1816 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1817 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1818 | struct e1000_hw *hw = &adapter->hw; | |
1819 | u32 link; | |
1820 | int tx_pending = 0; | |
1821 | ||
1822 | link = igbvf_has_link(adapter); | |
1823 | ||
1824 | if (link) { | |
1825 | if (!netif_carrier_ok(netdev)) { | |
d4e0fe01 AD |
1826 | mac->ops.get_link_up_info(&adapter->hw, |
1827 | &adapter->link_speed, | |
1828 | &adapter->link_duplex); | |
1829 | igbvf_print_link_info(adapter); | |
1830 | ||
d4e0fe01 AD |
1831 | netif_carrier_on(netdev); |
1832 | netif_wake_queue(netdev); | |
1833 | } | |
1834 | } else { | |
1835 | if (netif_carrier_ok(netdev)) { | |
1836 | adapter->link_speed = 0; | |
1837 | adapter->link_duplex = 0; | |
1838 | dev_info(&adapter->pdev->dev, "Link is Down\n"); | |
1839 | netif_carrier_off(netdev); | |
1840 | netif_stop_queue(netdev); | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | if (netif_carrier_ok(netdev)) { | |
1845 | igbvf_update_stats(adapter); | |
1846 | } else { | |
1847 | tx_pending = (igbvf_desc_unused(tx_ring) + 1 < | |
1848 | tx_ring->count); | |
1849 | if (tx_pending) { | |
1850 | /* | |
1851 | * We've lost link, so the controller stops DMA, | |
1852 | * but we've got queued Tx work that's never going | |
1853 | * to get done, so reset controller to flush Tx. | |
1854 | * (Do the reset outside of interrupt context). | |
1855 | */ | |
1856 | adapter->tx_timeout_count++; | |
1857 | schedule_work(&adapter->reset_task); | |
1858 | } | |
1859 | } | |
1860 | ||
1861 | /* Cause software interrupt to ensure Rx ring is cleaned */ | |
1862 | ew32(EICS, adapter->rx_ring->eims_value); | |
1863 | ||
d4e0fe01 AD |
1864 | /* Reset the timer */ |
1865 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1866 | mod_timer(&adapter->watchdog_timer, | |
1867 | round_jiffies(jiffies + (2 * HZ))); | |
1868 | } | |
1869 | ||
1870 | #define IGBVF_TX_FLAGS_CSUM 0x00000001 | |
1871 | #define IGBVF_TX_FLAGS_VLAN 0x00000002 | |
1872 | #define IGBVF_TX_FLAGS_TSO 0x00000004 | |
1873 | #define IGBVF_TX_FLAGS_IPV4 0x00000008 | |
1874 | #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1875 | #define IGBVF_TX_FLAGS_VLAN_SHIFT 16 | |
1876 | ||
1877 | static int igbvf_tso(struct igbvf_adapter *adapter, | |
1878 | struct igbvf_ring *tx_ring, | |
1879 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
1880 | { | |
1881 | struct e1000_adv_tx_context_desc *context_desc; | |
1882 | unsigned int i; | |
1883 | int err; | |
1884 | struct igbvf_buffer *buffer_info; | |
1885 | u32 info = 0, tu_cmd = 0; | |
1886 | u32 mss_l4len_idx, l4len; | |
1887 | *hdr_len = 0; | |
1888 | ||
1889 | if (skb_header_cloned(skb)) { | |
1890 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1891 | if (err) { | |
1892 | dev_err(&adapter->pdev->dev, | |
1893 | "igbvf_tso returning an error\n"); | |
1894 | return err; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | l4len = tcp_hdrlen(skb); | |
1899 | *hdr_len += l4len; | |
1900 | ||
1901 | if (skb->protocol == htons(ETH_P_IP)) { | |
1902 | struct iphdr *iph = ip_hdr(skb); | |
1903 | iph->tot_len = 0; | |
1904 | iph->check = 0; | |
1905 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1906 | iph->daddr, 0, | |
1907 | IPPROTO_TCP, | |
1908 | 0); | |
8e1e8a47 | 1909 | } else if (skb_is_gso_v6(skb)) { |
d4e0fe01 AD |
1910 | ipv6_hdr(skb)->payload_len = 0; |
1911 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
1912 | &ipv6_hdr(skb)->daddr, | |
1913 | 0, IPPROTO_TCP, 0); | |
1914 | } | |
1915 | ||
1916 | i = tx_ring->next_to_use; | |
1917 | ||
1918 | buffer_info = &tx_ring->buffer_info[i]; | |
1919 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1920 | /* VLAN MACLEN IPLEN */ | |
1921 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1922 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1923 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1924 | *hdr_len += skb_network_offset(skb); | |
1925 | info |= (skb_transport_header(skb) - skb_network_header(skb)); | |
1926 | *hdr_len += (skb_transport_header(skb) - skb_network_header(skb)); | |
1927 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1928 | ||
1929 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
1930 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1931 | ||
1932 | if (skb->protocol == htons(ETH_P_IP)) | |
1933 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1934 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1935 | ||
1936 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
1937 | ||
1938 | /* MSS L4LEN IDX */ | |
1939 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
1940 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
1941 | ||
1942 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
1943 | context_desc->seqnum_seed = 0; | |
1944 | ||
1945 | buffer_info->time_stamp = jiffies; | |
1946 | buffer_info->next_to_watch = i; | |
1947 | buffer_info->dma = 0; | |
1948 | i++; | |
1949 | if (i == tx_ring->count) | |
1950 | i = 0; | |
1951 | ||
1952 | tx_ring->next_to_use = i; | |
1953 | ||
1954 | return true; | |
1955 | } | |
1956 | ||
1957 | static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter, | |
1958 | struct igbvf_ring *tx_ring, | |
1959 | struct sk_buff *skb, u32 tx_flags) | |
1960 | { | |
1961 | struct e1000_adv_tx_context_desc *context_desc; | |
1962 | unsigned int i; | |
1963 | struct igbvf_buffer *buffer_info; | |
1964 | u32 info = 0, tu_cmd = 0; | |
1965 | ||
1966 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
1967 | (tx_flags & IGBVF_TX_FLAGS_VLAN)) { | |
1968 | i = tx_ring->next_to_use; | |
1969 | buffer_info = &tx_ring->buffer_info[i]; | |
1970 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1971 | ||
1972 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1973 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1974 | ||
1975 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1976 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
1977 | info |= (skb_transport_header(skb) - | |
1978 | skb_network_header(skb)); | |
1979 | ||
1980 | ||
1981 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1982 | ||
1983 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1984 | ||
1985 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
1986 | switch (skb->protocol) { | |
1987 | case __constant_htons(ETH_P_IP): | |
1988 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1989 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
1990 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1991 | break; | |
1992 | case __constant_htons(ETH_P_IPV6): | |
1993 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
1994 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1995 | break; | |
1996 | default: | |
1997 | break; | |
1998 | } | |
1999 | } | |
2000 | ||
2001 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2002 | context_desc->seqnum_seed = 0; | |
2003 | context_desc->mss_l4len_idx = 0; | |
2004 | ||
2005 | buffer_info->time_stamp = jiffies; | |
2006 | buffer_info->next_to_watch = i; | |
2007 | buffer_info->dma = 0; | |
2008 | i++; | |
2009 | if (i == tx_ring->count) | |
2010 | i = 0; | |
2011 | tx_ring->next_to_use = i; | |
2012 | ||
2013 | return true; | |
2014 | } | |
2015 | ||
2016 | return false; | |
2017 | } | |
2018 | ||
2019 | static int igbvf_maybe_stop_tx(struct net_device *netdev, int size) | |
2020 | { | |
2021 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2022 | ||
2023 | /* there is enough descriptors then we don't need to worry */ | |
2024 | if (igbvf_desc_unused(adapter->tx_ring) >= size) | |
2025 | return 0; | |
2026 | ||
2027 | netif_stop_queue(netdev); | |
2028 | ||
2029 | smp_mb(); | |
2030 | ||
2031 | /* We need to check again just in case room has been made available */ | |
2032 | if (igbvf_desc_unused(adapter->tx_ring) < size) | |
2033 | return -EBUSY; | |
2034 | ||
2035 | netif_wake_queue(netdev); | |
2036 | ||
2037 | ++adapter->restart_queue; | |
2038 | return 0; | |
2039 | } | |
2040 | ||
2041 | #define IGBVF_MAX_TXD_PWR 16 | |
2042 | #define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR) | |
2043 | ||
2044 | static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, | |
2045 | struct igbvf_ring *tx_ring, | |
2046 | struct sk_buff *skb, | |
2047 | unsigned int first) | |
2048 | { | |
2049 | struct igbvf_buffer *buffer_info; | |
a7d5ca40 | 2050 | struct pci_dev *pdev = adapter->pdev; |
d4e0fe01 AD |
2051 | unsigned int len = skb_headlen(skb); |
2052 | unsigned int count = 0, i; | |
2053 | unsigned int f; | |
d4e0fe01 AD |
2054 | |
2055 | i = tx_ring->next_to_use; | |
2056 | ||
d4e0fe01 AD |
2057 | buffer_info = &tx_ring->buffer_info[i]; |
2058 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2059 | buffer_info->length = len; | |
2060 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2061 | buffer_info->time_stamp = jiffies; | |
2062 | buffer_info->next_to_watch = i; | |
ac26d7d6 | 2063 | buffer_info->mapped_as_page = false; |
123e9f1a NN |
2064 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len, |
2065 | DMA_TO_DEVICE); | |
2066 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 AD |
2067 | goto dma_error; |
2068 | ||
d4e0fe01 AD |
2069 | |
2070 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
9e903e08 | 2071 | const struct skb_frag_struct *frag; |
d4e0fe01 | 2072 | |
8581145f | 2073 | count++; |
d4e0fe01 AD |
2074 | i++; |
2075 | if (i == tx_ring->count) | |
2076 | i = 0; | |
2077 | ||
2078 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 2079 | len = skb_frag_size(frag); |
d4e0fe01 AD |
2080 | |
2081 | buffer_info = &tx_ring->buffer_info[i]; | |
2082 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2083 | buffer_info->length = len; | |
2084 | buffer_info->time_stamp = jiffies; | |
2085 | buffer_info->next_to_watch = i; | |
a7d5ca40 | 2086 | buffer_info->mapped_as_page = true; |
877749bf | 2087 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, 0, len, |
123e9f1a NN |
2088 | DMA_TO_DEVICE); |
2089 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 | 2090 | goto dma_error; |
d4e0fe01 AD |
2091 | } |
2092 | ||
2093 | tx_ring->buffer_info[i].skb = skb; | |
2094 | tx_ring->buffer_info[first].next_to_watch = i; | |
2095 | ||
a7d5ca40 AD |
2096 | return ++count; |
2097 | ||
2098 | dma_error: | |
2099 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2100 | ||
2101 | /* clear timestamp and dma mappings for failed buffer_info mapping */ | |
2102 | buffer_info->dma = 0; | |
2103 | buffer_info->time_stamp = 0; | |
2104 | buffer_info->length = 0; | |
2105 | buffer_info->next_to_watch = 0; | |
2106 | buffer_info->mapped_as_page = false; | |
c1fa347f RK |
2107 | if (count) |
2108 | count--; | |
a7d5ca40 AD |
2109 | |
2110 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
c1fa347f RK |
2111 | while (count--) { |
2112 | if (i==0) | |
a7d5ca40 | 2113 | i += tx_ring->count; |
c1fa347f | 2114 | i--; |
a7d5ca40 AD |
2115 | buffer_info = &tx_ring->buffer_info[i]; |
2116 | igbvf_put_txbuf(adapter, buffer_info); | |
2117 | } | |
2118 | ||
2119 | return 0; | |
d4e0fe01 AD |
2120 | } |
2121 | ||
2122 | static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, | |
2123 | struct igbvf_ring *tx_ring, | |
2124 | int tx_flags, int count, u32 paylen, | |
2125 | u8 hdr_len) | |
2126 | { | |
2127 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2128 | struct igbvf_buffer *buffer_info; | |
2129 | u32 olinfo_status = 0, cmd_type_len; | |
2130 | unsigned int i; | |
2131 | ||
2132 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
2133 | E1000_ADVTXD_DCMD_DEXT); | |
2134 | ||
2135 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2136 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2137 | ||
2138 | if (tx_flags & IGBVF_TX_FLAGS_TSO) { | |
2139 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2140 | ||
2141 | /* insert tcp checksum */ | |
2142 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2143 | ||
2144 | /* insert ip checksum */ | |
2145 | if (tx_flags & IGBVF_TX_FLAGS_IPV4) | |
2146 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2147 | ||
2148 | } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) { | |
2149 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2150 | } | |
2151 | ||
2152 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2153 | ||
2154 | i = tx_ring->next_to_use; | |
2155 | while (count--) { | |
2156 | buffer_info = &tx_ring->buffer_info[i]; | |
2157 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
2158 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2159 | tx_desc->read.cmd_type_len = | |
2160 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
2161 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2162 | i++; | |
2163 | if (i == tx_ring->count) | |
2164 | i = 0; | |
2165 | } | |
2166 | ||
2167 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2168 | /* Force memory writes to complete before letting h/w | |
2169 | * know there are new descriptors to fetch. (Only | |
2170 | * applicable for weak-ordered memory model archs, | |
2171 | * such as IA-64). */ | |
2172 | wmb(); | |
2173 | ||
2174 | tx_ring->next_to_use = i; | |
2175 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2176 | /* we need this if more than one processor can write to our tail | |
2177 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2178 | mmiowb(); | |
2179 | } | |
2180 | ||
3b29a56d SH |
2181 | static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb, |
2182 | struct net_device *netdev, | |
2183 | struct igbvf_ring *tx_ring) | |
d4e0fe01 AD |
2184 | { |
2185 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2186 | unsigned int first, tx_flags = 0; | |
2187 | u8 hdr_len = 0; | |
2188 | int count = 0; | |
2189 | int tso = 0; | |
2190 | ||
2191 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2192 | dev_kfree_skb_any(skb); | |
2193 | return NETDEV_TX_OK; | |
2194 | } | |
2195 | ||
2196 | if (skb->len <= 0) { | |
2197 | dev_kfree_skb_any(skb); | |
2198 | return NETDEV_TX_OK; | |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * need: count + 4 desc gap to keep tail from touching | |
2203 | * + 2 desc gap to keep tail from touching head, | |
2204 | * + 1 desc for skb->data, | |
2205 | * + 1 desc for context descriptor, | |
2206 | * head, otherwise try next time | |
2207 | */ | |
2208 | if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) { | |
2209 | /* this is a hard error */ | |
2210 | return NETDEV_TX_BUSY; | |
2211 | } | |
2212 | ||
a0f1d603 | 2213 | if (vlan_tx_tag_present(skb)) { |
d4e0fe01 AD |
2214 | tx_flags |= IGBVF_TX_FLAGS_VLAN; |
2215 | tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT); | |
2216 | } | |
2217 | ||
2218 | if (skb->protocol == htons(ETH_P_IP)) | |
2219 | tx_flags |= IGBVF_TX_FLAGS_IPV4; | |
2220 | ||
2221 | first = tx_ring->next_to_use; | |
2222 | ||
2223 | tso = skb_is_gso(skb) ? | |
2224 | igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0; | |
2225 | if (unlikely(tso < 0)) { | |
2226 | dev_kfree_skb_any(skb); | |
2227 | return NETDEV_TX_OK; | |
2228 | } | |
2229 | ||
2230 | if (tso) | |
2231 | tx_flags |= IGBVF_TX_FLAGS_TSO; | |
2232 | else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2233 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2234 | tx_flags |= IGBVF_TX_FLAGS_CSUM; | |
2235 | ||
2236 | /* | |
2237 | * count reflects descriptors mapped, if 0 then mapping error | |
25985edc | 2238 | * has occurred and we need to rewind the descriptor queue |
d4e0fe01 AD |
2239 | */ |
2240 | count = igbvf_tx_map_adv(adapter, tx_ring, skb, first); | |
2241 | ||
2242 | if (count) { | |
2243 | igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count, | |
2244 | skb->len, hdr_len); | |
d4e0fe01 AD |
2245 | /* Make sure there is space in the ring for the next send. */ |
2246 | igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4); | |
2247 | } else { | |
2248 | dev_kfree_skb_any(skb); | |
2249 | tx_ring->buffer_info[first].time_stamp = 0; | |
2250 | tx_ring->next_to_use = first; | |
2251 | } | |
2252 | ||
2253 | return NETDEV_TX_OK; | |
2254 | } | |
2255 | ||
3b29a56d SH |
2256 | static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb, |
2257 | struct net_device *netdev) | |
d4e0fe01 AD |
2258 | { |
2259 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2260 | struct igbvf_ring *tx_ring; | |
d4e0fe01 AD |
2261 | |
2262 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2263 | dev_kfree_skb_any(skb); | |
2264 | return NETDEV_TX_OK; | |
2265 | } | |
2266 | ||
2267 | tx_ring = &adapter->tx_ring[0]; | |
2268 | ||
3b29a56d | 2269 | return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring); |
d4e0fe01 AD |
2270 | } |
2271 | ||
2272 | /** | |
2273 | * igbvf_tx_timeout - Respond to a Tx Hang | |
2274 | * @netdev: network interface device structure | |
2275 | **/ | |
2276 | static void igbvf_tx_timeout(struct net_device *netdev) | |
2277 | { | |
2278 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2279 | ||
2280 | /* Do the reset outside of interrupt context */ | |
2281 | adapter->tx_timeout_count++; | |
2282 | schedule_work(&adapter->reset_task); | |
2283 | } | |
2284 | ||
2285 | static void igbvf_reset_task(struct work_struct *work) | |
2286 | { | |
2287 | struct igbvf_adapter *adapter; | |
2288 | adapter = container_of(work, struct igbvf_adapter, reset_task); | |
2289 | ||
2290 | igbvf_reinit_locked(adapter); | |
2291 | } | |
2292 | ||
2293 | /** | |
2294 | * igbvf_get_stats - Get System Network Statistics | |
2295 | * @netdev: network interface device structure | |
2296 | * | |
2297 | * Returns the address of the device statistics structure. | |
2298 | * The statistics are actually updated from the timer callback. | |
2299 | **/ | |
2300 | static struct net_device_stats *igbvf_get_stats(struct net_device *netdev) | |
2301 | { | |
2302 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2303 | ||
2304 | /* only return the current stats */ | |
2305 | return &adapter->net_stats; | |
2306 | } | |
2307 | ||
2308 | /** | |
2309 | * igbvf_change_mtu - Change the Maximum Transfer Unit | |
2310 | * @netdev: network interface device structure | |
2311 | * @new_mtu: new value for maximum frame size | |
2312 | * | |
2313 | * Returns 0 on success, negative on failure | |
2314 | **/ | |
2315 | static int igbvf_change_mtu(struct net_device *netdev, int new_mtu) | |
2316 | { | |
2317 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2318 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2319 | ||
2320 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2321 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
2322 | return -EINVAL; | |
2323 | } | |
2324 | ||
d4e0fe01 AD |
2325 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
2326 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
2327 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
2328 | return -EINVAL; | |
2329 | } | |
2330 | ||
2331 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
2332 | msleep(1); | |
2333 | /* igbvf_down has a dependency on max_frame_size */ | |
2334 | adapter->max_frame_size = max_frame; | |
2335 | if (netif_running(netdev)) | |
2336 | igbvf_down(adapter); | |
2337 | ||
2338 | /* | |
2339 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
2340 | * means we reserve 2 more, this pushes us to allocate from the next | |
2341 | * larger slab size. | |
2342 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
2343 | * However with the new *_jumbo_rx* routines, jumbo receives will use | |
2344 | * fragmented skbs | |
2345 | */ | |
2346 | ||
2347 | if (max_frame <= 1024) | |
2348 | adapter->rx_buffer_len = 1024; | |
2349 | else if (max_frame <= 2048) | |
2350 | adapter->rx_buffer_len = 2048; | |
2351 | else | |
2352 | #if (PAGE_SIZE / 2) > 16384 | |
2353 | adapter->rx_buffer_len = 16384; | |
2354 | #else | |
2355 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
2356 | #endif | |
2357 | ||
2358 | ||
2359 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
2360 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
2361 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
2362 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + | |
2363 | ETH_FCS_LEN; | |
2364 | ||
2365 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
2366 | netdev->mtu, new_mtu); | |
2367 | netdev->mtu = new_mtu; | |
2368 | ||
2369 | if (netif_running(netdev)) | |
2370 | igbvf_up(adapter); | |
2371 | else | |
2372 | igbvf_reset(adapter); | |
2373 | ||
2374 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2375 | ||
2376 | return 0; | |
2377 | } | |
2378 | ||
2379 | static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2380 | { | |
2381 | switch (cmd) { | |
2382 | default: | |
2383 | return -EOPNOTSUPP; | |
2384 | } | |
2385 | } | |
2386 | ||
2387 | static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2388 | { | |
2389 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2390 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2391 | #ifdef CONFIG_PM | |
2392 | int retval = 0; | |
2393 | #endif | |
2394 | ||
2395 | netif_device_detach(netdev); | |
2396 | ||
2397 | if (netif_running(netdev)) { | |
2398 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
2399 | igbvf_down(adapter); | |
2400 | igbvf_free_irq(adapter); | |
2401 | } | |
2402 | ||
2403 | #ifdef CONFIG_PM | |
2404 | retval = pci_save_state(pdev); | |
2405 | if (retval) | |
2406 | return retval; | |
2407 | #endif | |
2408 | ||
2409 | pci_disable_device(pdev); | |
2410 | ||
2411 | return 0; | |
2412 | } | |
2413 | ||
2414 | #ifdef CONFIG_PM | |
2415 | static int igbvf_resume(struct pci_dev *pdev) | |
2416 | { | |
2417 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2418 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2419 | u32 err; | |
2420 | ||
2421 | pci_restore_state(pdev); | |
2422 | err = pci_enable_device_mem(pdev); | |
2423 | if (err) { | |
2424 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); | |
2425 | return err; | |
2426 | } | |
2427 | ||
2428 | pci_set_master(pdev); | |
2429 | ||
2430 | if (netif_running(netdev)) { | |
2431 | err = igbvf_request_irq(adapter); | |
2432 | if (err) | |
2433 | return err; | |
2434 | } | |
2435 | ||
2436 | igbvf_reset(adapter); | |
2437 | ||
2438 | if (netif_running(netdev)) | |
2439 | igbvf_up(adapter); | |
2440 | ||
2441 | netif_device_attach(netdev); | |
2442 | ||
2443 | return 0; | |
2444 | } | |
2445 | #endif | |
2446 | ||
2447 | static void igbvf_shutdown(struct pci_dev *pdev) | |
2448 | { | |
2449 | igbvf_suspend(pdev, PMSG_SUSPEND); | |
2450 | } | |
2451 | ||
2452 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2453 | /* | |
2454 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2455 | * without having to re-enable interrupts. It's not called while | |
2456 | * the interrupt routine is executing. | |
2457 | */ | |
2458 | static void igbvf_netpoll(struct net_device *netdev) | |
2459 | { | |
2460 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2461 | ||
2462 | disable_irq(adapter->pdev->irq); | |
2463 | ||
2464 | igbvf_clean_tx_irq(adapter->tx_ring); | |
2465 | ||
2466 | enable_irq(adapter->pdev->irq); | |
2467 | } | |
2468 | #endif | |
2469 | ||
2470 | /** | |
2471 | * igbvf_io_error_detected - called when PCI error is detected | |
2472 | * @pdev: Pointer to PCI device | |
2473 | * @state: The current pci connection state | |
2474 | * | |
2475 | * This function is called after a PCI bus error affecting | |
2476 | * this device has been detected. | |
2477 | */ | |
2478 | static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev, | |
2479 | pci_channel_state_t state) | |
2480 | { | |
2481 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2482 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2483 | ||
2484 | netif_device_detach(netdev); | |
2485 | ||
c06c430d DN |
2486 | if (state == pci_channel_io_perm_failure) |
2487 | return PCI_ERS_RESULT_DISCONNECT; | |
2488 | ||
d4e0fe01 AD |
2489 | if (netif_running(netdev)) |
2490 | igbvf_down(adapter); | |
2491 | pci_disable_device(pdev); | |
2492 | ||
2493 | /* Request a slot slot reset. */ | |
2494 | return PCI_ERS_RESULT_NEED_RESET; | |
2495 | } | |
2496 | ||
2497 | /** | |
2498 | * igbvf_io_slot_reset - called after the pci bus has been reset. | |
2499 | * @pdev: Pointer to PCI device | |
2500 | * | |
2501 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2502 | * resembles the first-half of the igbvf_resume routine. | |
2503 | */ | |
2504 | static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev) | |
2505 | { | |
2506 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2507 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2508 | ||
2509 | if (pci_enable_device_mem(pdev)) { | |
2510 | dev_err(&pdev->dev, | |
2511 | "Cannot re-enable PCI device after reset.\n"); | |
2512 | return PCI_ERS_RESULT_DISCONNECT; | |
2513 | } | |
2514 | pci_set_master(pdev); | |
2515 | ||
2516 | igbvf_reset(adapter); | |
2517 | ||
2518 | return PCI_ERS_RESULT_RECOVERED; | |
2519 | } | |
2520 | ||
2521 | /** | |
2522 | * igbvf_io_resume - called when traffic can start flowing again. | |
2523 | * @pdev: Pointer to PCI device | |
2524 | * | |
2525 | * This callback is called when the error recovery driver tells us that | |
2526 | * its OK to resume normal operation. Implementation resembles the | |
2527 | * second-half of the igbvf_resume routine. | |
2528 | */ | |
2529 | static void igbvf_io_resume(struct pci_dev *pdev) | |
2530 | { | |
2531 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2532 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2533 | ||
2534 | if (netif_running(netdev)) { | |
2535 | if (igbvf_up(adapter)) { | |
2536 | dev_err(&pdev->dev, | |
2537 | "can't bring device back up after reset\n"); | |
2538 | return; | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | netif_device_attach(netdev); | |
2543 | } | |
2544 | ||
2545 | static void igbvf_print_device_info(struct igbvf_adapter *adapter) | |
2546 | { | |
2547 | struct e1000_hw *hw = &adapter->hw; | |
2548 | struct net_device *netdev = adapter->netdev; | |
2549 | struct pci_dev *pdev = adapter->pdev; | |
2550 | ||
10090751 WM |
2551 | if (hw->mac.type == e1000_vfadapt_i350) |
2552 | dev_info(&pdev->dev, "Intel(R) I350 Virtual Function\n"); | |
2553 | else | |
2554 | dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n"); | |
753cdc33 | 2555 | dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr); |
d4e0fe01 AD |
2556 | } |
2557 | ||
c8f44aff MM |
2558 | static int igbvf_set_features(struct net_device *netdev, |
2559 | netdev_features_t features) | |
fd38f734 MM |
2560 | { |
2561 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2562 | ||
2563 | if (features & NETIF_F_RXCSUM) | |
2564 | adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED; | |
2565 | else | |
2566 | adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED; | |
2567 | ||
2568 | return 0; | |
2569 | } | |
2570 | ||
d4e0fe01 AD |
2571 | static const struct net_device_ops igbvf_netdev_ops = { |
2572 | .ndo_open = igbvf_open, | |
2573 | .ndo_stop = igbvf_close, | |
2574 | .ndo_start_xmit = igbvf_xmit_frame, | |
2575 | .ndo_get_stats = igbvf_get_stats, | |
afc4b13d | 2576 | .ndo_set_rx_mode = igbvf_set_multi, |
d4e0fe01 AD |
2577 | .ndo_set_mac_address = igbvf_set_mac, |
2578 | .ndo_change_mtu = igbvf_change_mtu, | |
2579 | .ndo_do_ioctl = igbvf_ioctl, | |
2580 | .ndo_tx_timeout = igbvf_tx_timeout, | |
d4e0fe01 AD |
2581 | .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid, |
2582 | .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid, | |
2583 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2584 | .ndo_poll_controller = igbvf_netpoll, | |
2585 | #endif | |
fd38f734 | 2586 | .ndo_set_features = igbvf_set_features, |
d4e0fe01 AD |
2587 | }; |
2588 | ||
2589 | /** | |
2590 | * igbvf_probe - Device Initialization Routine | |
2591 | * @pdev: PCI device information struct | |
2592 | * @ent: entry in igbvf_pci_tbl | |
2593 | * | |
2594 | * Returns 0 on success, negative on failure | |
2595 | * | |
2596 | * igbvf_probe initializes an adapter identified by a pci_dev structure. | |
2597 | * The OS initialization, configuring of the adapter private structure, | |
2598 | * and a hardware reset occur. | |
2599 | **/ | |
2600 | static int __devinit igbvf_probe(struct pci_dev *pdev, | |
2601 | const struct pci_device_id *ent) | |
2602 | { | |
2603 | struct net_device *netdev; | |
2604 | struct igbvf_adapter *adapter; | |
2605 | struct e1000_hw *hw; | |
2606 | const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data]; | |
2607 | ||
2608 | static int cards_found; | |
2609 | int err, pci_using_dac; | |
2610 | ||
2611 | err = pci_enable_device_mem(pdev); | |
2612 | if (err) | |
2613 | return err; | |
2614 | ||
2615 | pci_using_dac = 0; | |
123e9f1a | 2616 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
d4e0fe01 | 2617 | if (!err) { |
123e9f1a | 2618 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
d4e0fe01 AD |
2619 | if (!err) |
2620 | pci_using_dac = 1; | |
2621 | } else { | |
123e9f1a | 2622 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
d4e0fe01 | 2623 | if (err) { |
123e9f1a NN |
2624 | err = dma_set_coherent_mask(&pdev->dev, |
2625 | DMA_BIT_MASK(32)); | |
d4e0fe01 AD |
2626 | if (err) { |
2627 | dev_err(&pdev->dev, "No usable DMA " | |
2628 | "configuration, aborting\n"); | |
2629 | goto err_dma; | |
2630 | } | |
2631 | } | |
2632 | } | |
2633 | ||
2634 | err = pci_request_regions(pdev, igbvf_driver_name); | |
2635 | if (err) | |
2636 | goto err_pci_reg; | |
2637 | ||
2638 | pci_set_master(pdev); | |
2639 | ||
2640 | err = -ENOMEM; | |
2641 | netdev = alloc_etherdev(sizeof(struct igbvf_adapter)); | |
2642 | if (!netdev) | |
2643 | goto err_alloc_etherdev; | |
2644 | ||
2645 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2646 | ||
2647 | pci_set_drvdata(pdev, netdev); | |
2648 | adapter = netdev_priv(netdev); | |
2649 | hw = &adapter->hw; | |
2650 | adapter->netdev = netdev; | |
2651 | adapter->pdev = pdev; | |
2652 | adapter->ei = ei; | |
2653 | adapter->pba = ei->pba; | |
2654 | adapter->flags = ei->flags; | |
2655 | adapter->hw.back = adapter; | |
2656 | adapter->hw.mac.type = ei->mac; | |
b3f4d599 | 2657 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
d4e0fe01 AD |
2658 | |
2659 | /* PCI config space info */ | |
2660 | ||
2661 | hw->vendor_id = pdev->vendor; | |
2662 | hw->device_id = pdev->device; | |
2663 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2664 | hw->subsystem_device_id = pdev->subsystem_device; | |
ff938e43 | 2665 | hw->revision_id = pdev->revision; |
d4e0fe01 AD |
2666 | |
2667 | err = -EIO; | |
2668 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2669 | pci_resource_len(pdev, 0)); | |
2670 | ||
2671 | if (!adapter->hw.hw_addr) | |
2672 | goto err_ioremap; | |
2673 | ||
2674 | if (ei->get_variants) { | |
2675 | err = ei->get_variants(adapter); | |
2676 | if (err) | |
2677 | goto err_ioremap; | |
2678 | } | |
2679 | ||
2680 | /* setup adapter struct */ | |
2681 | err = igbvf_sw_init(adapter); | |
2682 | if (err) | |
2683 | goto err_sw_init; | |
2684 | ||
2685 | /* construct the net_device struct */ | |
2686 | netdev->netdev_ops = &igbvf_netdev_ops; | |
2687 | ||
2688 | igbvf_set_ethtool_ops(netdev); | |
2689 | netdev->watchdog_timeo = 5 * HZ; | |
2690 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2691 | ||
2692 | adapter->bd_number = cards_found++; | |
2693 | ||
fd38f734 | 2694 | netdev->hw_features = NETIF_F_SG | |
d4e0fe01 | 2695 | NETIF_F_IP_CSUM | |
fd38f734 MM |
2696 | NETIF_F_IPV6_CSUM | |
2697 | NETIF_F_TSO | | |
2698 | NETIF_F_TSO6 | | |
2699 | NETIF_F_RXCSUM; | |
2700 | ||
2701 | netdev->features = netdev->hw_features | | |
d4e0fe01 AD |
2702 | NETIF_F_HW_VLAN_TX | |
2703 | NETIF_F_HW_VLAN_RX | | |
2704 | NETIF_F_HW_VLAN_FILTER; | |
2705 | ||
d4e0fe01 AD |
2706 | if (pci_using_dac) |
2707 | netdev->features |= NETIF_F_HIGHDMA; | |
2708 | ||
2709 | netdev->vlan_features |= NETIF_F_TSO; | |
2710 | netdev->vlan_features |= NETIF_F_TSO6; | |
2711 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
2712 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; | |
2713 | netdev->vlan_features |= NETIF_F_SG; | |
2714 | ||
2715 | /*reset the controller to put the device in a known good state */ | |
2716 | err = hw->mac.ops.reset_hw(hw); | |
2717 | if (err) { | |
2718 | dev_info(&pdev->dev, | |
1242b6f3 WM |
2719 | "PF still in reset state, assigning new address." |
2720 | " Is the PF interface up?\n"); | |
1a0d6ae5 DK |
2721 | eth_hw_addr_random(netdev); |
2722 | memcpy(adapter->hw.mac.addr, netdev->dev_addr, | |
2723 | netdev->addr_len); | |
d4e0fe01 AD |
2724 | } else { |
2725 | err = hw->mac.ops.read_mac_addr(hw); | |
2726 | if (err) { | |
2727 | dev_err(&pdev->dev, "Error reading MAC address\n"); | |
2728 | goto err_hw_init; | |
2729 | } | |
1a0d6ae5 DK |
2730 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, |
2731 | netdev->addr_len); | |
d4e0fe01 AD |
2732 | } |
2733 | ||
d4e0fe01 | 2734 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
753cdc33 HS |
2735 | dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
2736 | netdev->dev_addr); | |
d4e0fe01 AD |
2737 | err = -EIO; |
2738 | goto err_hw_init; | |
2739 | } | |
2740 | ||
1a0d6ae5 DK |
2741 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); |
2742 | ||
d4e0fe01 AD |
2743 | setup_timer(&adapter->watchdog_timer, &igbvf_watchdog, |
2744 | (unsigned long) adapter); | |
2745 | ||
2746 | INIT_WORK(&adapter->reset_task, igbvf_reset_task); | |
2747 | INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task); | |
2748 | ||
2749 | /* ring size defaults */ | |
2750 | adapter->rx_ring->count = 1024; | |
2751 | adapter->tx_ring->count = 1024; | |
2752 | ||
2753 | /* reset the hardware with the new settings */ | |
2754 | igbvf_reset(adapter); | |
2755 | ||
d4e0fe01 AD |
2756 | strcpy(netdev->name, "eth%d"); |
2757 | err = register_netdev(netdev); | |
2758 | if (err) | |
2759 | goto err_hw_init; | |
2760 | ||
de7fe787 ET |
2761 | /* tell the stack to leave us alone until igbvf_open() is called */ |
2762 | netif_carrier_off(netdev); | |
2763 | netif_stop_queue(netdev); | |
2764 | ||
d4e0fe01 AD |
2765 | igbvf_print_device_info(adapter); |
2766 | ||
2767 | igbvf_initialize_last_counter_stats(adapter); | |
2768 | ||
2769 | return 0; | |
2770 | ||
2771 | err_hw_init: | |
2772 | kfree(adapter->tx_ring); | |
2773 | kfree(adapter->rx_ring); | |
2774 | err_sw_init: | |
2775 | igbvf_reset_interrupt_capability(adapter); | |
2776 | iounmap(adapter->hw.hw_addr); | |
2777 | err_ioremap: | |
2778 | free_netdev(netdev); | |
2779 | err_alloc_etherdev: | |
2780 | pci_release_regions(pdev); | |
2781 | err_pci_reg: | |
2782 | err_dma: | |
2783 | pci_disable_device(pdev); | |
2784 | return err; | |
2785 | } | |
2786 | ||
2787 | /** | |
2788 | * igbvf_remove - Device Removal Routine | |
2789 | * @pdev: PCI device information struct | |
2790 | * | |
2791 | * igbvf_remove is called by the PCI subsystem to alert the driver | |
2792 | * that it should release a PCI device. The could be caused by a | |
2793 | * Hot-Plug event, or because the driver is going to be removed from | |
2794 | * memory. | |
2795 | **/ | |
2796 | static void __devexit igbvf_remove(struct pci_dev *pdev) | |
2797 | { | |
2798 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2799 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2800 | struct e1000_hw *hw = &adapter->hw; | |
2801 | ||
2802 | /* | |
760141a5 TH |
2803 | * The watchdog timer may be rescheduled, so explicitly |
2804 | * disable it from being rescheduled. | |
d4e0fe01 AD |
2805 | */ |
2806 | set_bit(__IGBVF_DOWN, &adapter->state); | |
2807 | del_timer_sync(&adapter->watchdog_timer); | |
2808 | ||
760141a5 TH |
2809 | cancel_work_sync(&adapter->reset_task); |
2810 | cancel_work_sync(&adapter->watchdog_task); | |
d4e0fe01 AD |
2811 | |
2812 | unregister_netdev(netdev); | |
2813 | ||
2814 | igbvf_reset_interrupt_capability(adapter); | |
2815 | ||
2816 | /* | |
2817 | * it is important to delete the napi struct prior to freeing the | |
2818 | * rx ring so that you do not end up with null pointer refs | |
2819 | */ | |
2820 | netif_napi_del(&adapter->rx_ring->napi); | |
2821 | kfree(adapter->tx_ring); | |
2822 | kfree(adapter->rx_ring); | |
2823 | ||
2824 | iounmap(hw->hw_addr); | |
2825 | if (hw->flash_address) | |
2826 | iounmap(hw->flash_address); | |
2827 | pci_release_regions(pdev); | |
2828 | ||
2829 | free_netdev(netdev); | |
2830 | ||
2831 | pci_disable_device(pdev); | |
2832 | } | |
2833 | ||
2834 | /* PCI Error Recovery (ERS) */ | |
2835 | static struct pci_error_handlers igbvf_err_handler = { | |
2836 | .error_detected = igbvf_io_error_detected, | |
2837 | .slot_reset = igbvf_io_slot_reset, | |
2838 | .resume = igbvf_io_resume, | |
2839 | }; | |
2840 | ||
a3aa1884 | 2841 | static DEFINE_PCI_DEVICE_TABLE(igbvf_pci_tbl) = { |
d4e0fe01 | 2842 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf }, |
031d7952 | 2843 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf }, |
d4e0fe01 AD |
2844 | { } /* terminate list */ |
2845 | }; | |
2846 | MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl); | |
2847 | ||
2848 | /* PCI Device API Driver */ | |
2849 | static struct pci_driver igbvf_driver = { | |
2850 | .name = igbvf_driver_name, | |
2851 | .id_table = igbvf_pci_tbl, | |
2852 | .probe = igbvf_probe, | |
2853 | .remove = __devexit_p(igbvf_remove), | |
2854 | #ifdef CONFIG_PM | |
2855 | /* Power Management Hooks */ | |
2856 | .suspend = igbvf_suspend, | |
2857 | .resume = igbvf_resume, | |
2858 | #endif | |
2859 | .shutdown = igbvf_shutdown, | |
2860 | .err_handler = &igbvf_err_handler | |
2861 | }; | |
2862 | ||
2863 | /** | |
2864 | * igbvf_init_module - Driver Registration Routine | |
2865 | * | |
2866 | * igbvf_init_module is the first routine called when the driver is | |
2867 | * loaded. All it does is register with the PCI subsystem. | |
2868 | **/ | |
2869 | static int __init igbvf_init_module(void) | |
2870 | { | |
2871 | int ret; | |
a4ba8cbe JK |
2872 | pr_info("%s - version %s\n", igbvf_driver_string, igbvf_driver_version); |
2873 | pr_info("%s\n", igbvf_copyright); | |
d4e0fe01 AD |
2874 | |
2875 | ret = pci_register_driver(&igbvf_driver); | |
d4e0fe01 AD |
2876 | |
2877 | return ret; | |
2878 | } | |
2879 | module_init(igbvf_init_module); | |
2880 | ||
2881 | /** | |
2882 | * igbvf_exit_module - Driver Exit Cleanup Routine | |
2883 | * | |
2884 | * igbvf_exit_module is called just before the driver is removed | |
2885 | * from memory. | |
2886 | **/ | |
2887 | static void __exit igbvf_exit_module(void) | |
2888 | { | |
2889 | pci_unregister_driver(&igbvf_driver); | |
d4e0fe01 AD |
2890 | } |
2891 | module_exit(igbvf_exit_module); | |
2892 | ||
2893 | ||
2894 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
10090751 | 2895 | MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver"); |
d4e0fe01 AD |
2896 | MODULE_LICENSE("GPL"); |
2897 | MODULE_VERSION(DRV_VERSION); | |
2898 | ||
2899 | /* netdev.c */ |