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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 | ||
76f640f1 | 50 | #define DRV_VERSION "2.0.2-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 | { | |
2c1a1019 MW |
110 | u16 vid; |
111 | ||
a0f1d603 | 112 | if (status & E1000_RXD_STAT_VP) { |
2c1a1019 MW |
113 | if ((adapter->flags & IGBVF_FLAG_RX_LB_VLAN_BSWAP) && |
114 | (status & E1000_RXDEXT_STATERR_LB)) | |
115 | vid = be16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
116 | else | |
117 | vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
4d2d55ac GR |
118 | if (test_bit(vid, adapter->active_vlans)) |
119 | __vlan_hwaccel_put_tag(skb, vid); | |
a0f1d603 | 120 | } |
2c1a1019 MW |
121 | |
122 | napi_gro_receive(&adapter->rx_ring->napi, skb); | |
d4e0fe01 AD |
123 | } |
124 | ||
125 | static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, | |
126 | u32 status_err, struct sk_buff *skb) | |
127 | { | |
bc8acf2c | 128 | skb_checksum_none_assert(skb); |
d4e0fe01 AD |
129 | |
130 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
0364d6fd AD |
131 | if ((status_err & E1000_RXD_STAT_IXSM) || |
132 | (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED)) | |
d4e0fe01 | 133 | return; |
0364d6fd | 134 | |
d4e0fe01 AD |
135 | /* TCP/UDP checksum error bit is set */ |
136 | if (status_err & | |
137 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
138 | /* let the stack verify checksum errors */ | |
139 | adapter->hw_csum_err++; | |
140 | return; | |
141 | } | |
0364d6fd | 142 | |
d4e0fe01 AD |
143 | /* It must be a TCP or UDP packet with a valid checksum */ |
144 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
145 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
146 | ||
147 | adapter->hw_csum_good++; | |
148 | } | |
149 | ||
150 | /** | |
151 | * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split | |
152 | * @rx_ring: address of ring structure to repopulate | |
153 | * @cleaned_count: number of buffers to repopulate | |
154 | **/ | |
155 | static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring, | |
156 | int cleaned_count) | |
157 | { | |
158 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
159 | struct net_device *netdev = adapter->netdev; | |
160 | struct pci_dev *pdev = adapter->pdev; | |
161 | union e1000_adv_rx_desc *rx_desc; | |
162 | struct igbvf_buffer *buffer_info; | |
163 | struct sk_buff *skb; | |
164 | unsigned int i; | |
165 | int bufsz; | |
166 | ||
167 | i = rx_ring->next_to_use; | |
168 | buffer_info = &rx_ring->buffer_info[i]; | |
169 | ||
170 | if (adapter->rx_ps_hdr_size) | |
171 | bufsz = adapter->rx_ps_hdr_size; | |
172 | else | |
173 | bufsz = adapter->rx_buffer_len; | |
d4e0fe01 AD |
174 | |
175 | while (cleaned_count--) { | |
176 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
177 | ||
178 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { | |
179 | if (!buffer_info->page) { | |
180 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
181 | if (!buffer_info->page) { | |
182 | adapter->alloc_rx_buff_failed++; | |
183 | goto no_buffers; | |
184 | } | |
185 | buffer_info->page_offset = 0; | |
186 | } else { | |
187 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
188 | } | |
189 | buffer_info->page_dma = | |
123e9f1a | 190 | dma_map_page(&pdev->dev, buffer_info->page, |
d4e0fe01 AD |
191 | buffer_info->page_offset, |
192 | PAGE_SIZE / 2, | |
123e9f1a | 193 | DMA_FROM_DEVICE); |
91ffb8e0 GR |
194 | if (dma_mapping_error(&pdev->dev, |
195 | buffer_info->page_dma)) { | |
196 | __free_page(buffer_info->page); | |
197 | buffer_info->page = NULL; | |
198 | dev_err(&pdev->dev, "RX DMA map failed\n"); | |
199 | break; | |
200 | } | |
d4e0fe01 AD |
201 | } |
202 | ||
203 | if (!buffer_info->skb) { | |
89d71a66 | 204 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
d4e0fe01 AD |
205 | if (!skb) { |
206 | adapter->alloc_rx_buff_failed++; | |
207 | goto no_buffers; | |
208 | } | |
209 | ||
d4e0fe01 | 210 | buffer_info->skb = skb; |
123e9f1a | 211 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
d4e0fe01 | 212 | bufsz, |
123e9f1a | 213 | DMA_FROM_DEVICE); |
91ffb8e0 GR |
214 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
215 | dev_kfree_skb(buffer_info->skb); | |
216 | buffer_info->skb = NULL; | |
217 | dev_err(&pdev->dev, "RX DMA map failed\n"); | |
218 | goto no_buffers; | |
219 | } | |
d4e0fe01 AD |
220 | } |
221 | /* Refresh the desc even if buffer_addrs didn't change because | |
222 | * each write-back erases this info. */ | |
223 | if (adapter->rx_ps_hdr_size) { | |
224 | rx_desc->read.pkt_addr = | |
225 | cpu_to_le64(buffer_info->page_dma); | |
226 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
227 | } else { | |
228 | rx_desc->read.pkt_addr = | |
229 | cpu_to_le64(buffer_info->dma); | |
230 | rx_desc->read.hdr_addr = 0; | |
231 | } | |
232 | ||
233 | i++; | |
234 | if (i == rx_ring->count) | |
235 | i = 0; | |
236 | buffer_info = &rx_ring->buffer_info[i]; | |
237 | } | |
238 | ||
239 | no_buffers: | |
240 | if (rx_ring->next_to_use != i) { | |
241 | rx_ring->next_to_use = i; | |
242 | if (i == 0) | |
243 | i = (rx_ring->count - 1); | |
244 | else | |
245 | i--; | |
246 | ||
247 | /* Force memory writes to complete before letting h/w | |
248 | * know there are new descriptors to fetch. (Only | |
249 | * applicable for weak-ordered memory model archs, | |
250 | * such as IA-64). */ | |
251 | wmb(); | |
252 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
253 | } | |
254 | } | |
255 | ||
256 | /** | |
257 | * igbvf_clean_rx_irq - Send received data up the network stack; legacy | |
258 | * @adapter: board private structure | |
259 | * | |
260 | * the return value indicates whether actual cleaning was done, there | |
261 | * is no guarantee that everything was cleaned | |
262 | **/ | |
263 | static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter, | |
264 | int *work_done, int work_to_do) | |
265 | { | |
266 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
267 | struct net_device *netdev = adapter->netdev; | |
268 | struct pci_dev *pdev = adapter->pdev; | |
269 | union e1000_adv_rx_desc *rx_desc, *next_rxd; | |
270 | struct igbvf_buffer *buffer_info, *next_buffer; | |
271 | struct sk_buff *skb; | |
272 | bool cleaned = false; | |
273 | int cleaned_count = 0; | |
274 | unsigned int total_bytes = 0, total_packets = 0; | |
275 | unsigned int i; | |
276 | u32 length, hlen, staterr; | |
277 | ||
278 | i = rx_ring->next_to_clean; | |
279 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
280 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
281 | ||
282 | while (staterr & E1000_RXD_STAT_DD) { | |
283 | if (*work_done >= work_to_do) | |
284 | break; | |
285 | (*work_done)++; | |
2d0bb1c1 | 286 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
d4e0fe01 AD |
287 | |
288 | buffer_info = &rx_ring->buffer_info[i]; | |
289 | ||
290 | /* HW will not DMA in data larger than the given buffer, even | |
291 | * if it parses the (NFS, of course) header to be larger. In | |
292 | * that case, it fills the header buffer and spills the rest | |
293 | * into the page. | |
294 | */ | |
295 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) & | |
296 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
297 | if (hlen > adapter->rx_ps_hdr_size) | |
298 | hlen = adapter->rx_ps_hdr_size; | |
299 | ||
300 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
301 | cleaned = true; | |
302 | cleaned_count++; | |
303 | ||
304 | skb = buffer_info->skb; | |
305 | prefetch(skb->data - NET_IP_ALIGN); | |
306 | buffer_info->skb = NULL; | |
307 | if (!adapter->rx_ps_hdr_size) { | |
123e9f1a | 308 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 309 | adapter->rx_buffer_len, |
123e9f1a | 310 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
311 | buffer_info->dma = 0; |
312 | skb_put(skb, length); | |
313 | goto send_up; | |
314 | } | |
315 | ||
316 | if (!skb_shinfo(skb)->nr_frags) { | |
123e9f1a | 317 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
92d947b7 | 318 | adapter->rx_ps_hdr_size, |
123e9f1a | 319 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
320 | skb_put(skb, hlen); |
321 | } | |
322 | ||
323 | if (length) { | |
123e9f1a | 324 | dma_unmap_page(&pdev->dev, buffer_info->page_dma, |
d4e0fe01 | 325 | PAGE_SIZE / 2, |
123e9f1a | 326 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
327 | buffer_info->page_dma = 0; |
328 | ||
ec857fd4 | 329 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, |
d4e0fe01 AD |
330 | buffer_info->page, |
331 | buffer_info->page_offset, | |
332 | length); | |
333 | ||
334 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
335 | (page_count(buffer_info->page) != 1)) | |
336 | buffer_info->page = NULL; | |
337 | else | |
338 | get_page(buffer_info->page); | |
339 | ||
340 | skb->len += length; | |
341 | skb->data_len += length; | |
7b8b5961 | 342 | skb->truesize += PAGE_SIZE / 2; |
d4e0fe01 AD |
343 | } |
344 | send_up: | |
345 | i++; | |
346 | if (i == rx_ring->count) | |
347 | i = 0; | |
348 | next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
349 | prefetch(next_rxd); | |
350 | next_buffer = &rx_ring->buffer_info[i]; | |
351 | ||
352 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
353 | buffer_info->skb = next_buffer->skb; | |
354 | buffer_info->dma = next_buffer->dma; | |
355 | next_buffer->skb = skb; | |
356 | next_buffer->dma = 0; | |
357 | goto next_desc; | |
358 | } | |
359 | ||
360 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
361 | dev_kfree_skb_irq(skb); | |
362 | goto next_desc; | |
363 | } | |
364 | ||
365 | total_bytes += skb->len; | |
366 | total_packets++; | |
367 | ||
368 | igbvf_rx_checksum_adv(adapter, staterr, skb); | |
369 | ||
370 | skb->protocol = eth_type_trans(skb, netdev); | |
371 | ||
372 | igbvf_receive_skb(adapter, netdev, skb, staterr, | |
373 | rx_desc->wb.upper.vlan); | |
374 | ||
d4e0fe01 AD |
375 | next_desc: |
376 | rx_desc->wb.upper.status_error = 0; | |
377 | ||
378 | /* return some buffers to hardware, one at a time is too slow */ | |
379 | if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) { | |
380 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
381 | cleaned_count = 0; | |
382 | } | |
383 | ||
384 | /* use prefetched values */ | |
385 | rx_desc = next_rxd; | |
386 | buffer_info = next_buffer; | |
387 | ||
388 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
389 | } | |
390 | ||
391 | rx_ring->next_to_clean = i; | |
392 | cleaned_count = igbvf_desc_unused(rx_ring); | |
393 | ||
394 | if (cleaned_count) | |
395 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
396 | ||
397 | adapter->total_rx_packets += total_packets; | |
398 | adapter->total_rx_bytes += total_bytes; | |
399 | adapter->net_stats.rx_bytes += total_bytes; | |
400 | adapter->net_stats.rx_packets += total_packets; | |
401 | return cleaned; | |
402 | } | |
403 | ||
404 | static void igbvf_put_txbuf(struct igbvf_adapter *adapter, | |
405 | struct igbvf_buffer *buffer_info) | |
406 | { | |
a7d5ca40 AD |
407 | if (buffer_info->dma) { |
408 | if (buffer_info->mapped_as_page) | |
123e9f1a | 409 | dma_unmap_page(&adapter->pdev->dev, |
a7d5ca40 AD |
410 | buffer_info->dma, |
411 | buffer_info->length, | |
123e9f1a | 412 | DMA_TO_DEVICE); |
a7d5ca40 | 413 | else |
123e9f1a | 414 | dma_unmap_single(&adapter->pdev->dev, |
a7d5ca40 AD |
415 | buffer_info->dma, |
416 | buffer_info->length, | |
123e9f1a | 417 | DMA_TO_DEVICE); |
a7d5ca40 AD |
418 | buffer_info->dma = 0; |
419 | } | |
d4e0fe01 | 420 | if (buffer_info->skb) { |
d4e0fe01 AD |
421 | dev_kfree_skb_any(buffer_info->skb); |
422 | buffer_info->skb = NULL; | |
423 | } | |
424 | buffer_info->time_stamp = 0; | |
425 | } | |
426 | ||
d4e0fe01 AD |
427 | /** |
428 | * igbvf_setup_tx_resources - allocate Tx resources (Descriptors) | |
429 | * @adapter: board private structure | |
430 | * | |
431 | * Return 0 on success, negative on failure | |
432 | **/ | |
433 | int igbvf_setup_tx_resources(struct igbvf_adapter *adapter, | |
434 | struct igbvf_ring *tx_ring) | |
435 | { | |
436 | struct pci_dev *pdev = adapter->pdev; | |
437 | int size; | |
438 | ||
439 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
89bf67f1 | 440 | tx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
441 | if (!tx_ring->buffer_info) |
442 | goto err; | |
d4e0fe01 AD |
443 | |
444 | /* round up to nearest 4K */ | |
445 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); | |
446 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
447 | ||
123e9f1a NN |
448 | tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, |
449 | &tx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
450 | |
451 | if (!tx_ring->desc) | |
452 | goto err; | |
453 | ||
454 | tx_ring->adapter = adapter; | |
455 | tx_ring->next_to_use = 0; | |
456 | tx_ring->next_to_clean = 0; | |
457 | ||
458 | return 0; | |
459 | err: | |
460 | vfree(tx_ring->buffer_info); | |
461 | dev_err(&adapter->pdev->dev, | |
462 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
463 | return -ENOMEM; | |
464 | } | |
465 | ||
466 | /** | |
467 | * igbvf_setup_rx_resources - allocate Rx resources (Descriptors) | |
468 | * @adapter: board private structure | |
469 | * | |
470 | * Returns 0 on success, negative on failure | |
471 | **/ | |
472 | int igbvf_setup_rx_resources(struct igbvf_adapter *adapter, | |
473 | struct igbvf_ring *rx_ring) | |
474 | { | |
475 | struct pci_dev *pdev = adapter->pdev; | |
476 | int size, desc_len; | |
477 | ||
478 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
89bf67f1 | 479 | rx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
480 | if (!rx_ring->buffer_info) |
481 | goto err; | |
d4e0fe01 AD |
482 | |
483 | desc_len = sizeof(union e1000_adv_rx_desc); | |
484 | ||
485 | /* Round up to nearest 4K */ | |
486 | rx_ring->size = rx_ring->count * desc_len; | |
487 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
488 | ||
123e9f1a NN |
489 | rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, |
490 | &rx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
491 | |
492 | if (!rx_ring->desc) | |
493 | goto err; | |
494 | ||
495 | rx_ring->next_to_clean = 0; | |
496 | rx_ring->next_to_use = 0; | |
497 | ||
498 | rx_ring->adapter = adapter; | |
499 | ||
500 | return 0; | |
501 | ||
502 | err: | |
503 | vfree(rx_ring->buffer_info); | |
504 | rx_ring->buffer_info = NULL; | |
505 | dev_err(&adapter->pdev->dev, | |
506 | "Unable to allocate memory for the receive descriptor ring\n"); | |
507 | return -ENOMEM; | |
508 | } | |
509 | ||
510 | /** | |
511 | * igbvf_clean_tx_ring - Free Tx Buffers | |
512 | * @tx_ring: ring to be cleaned | |
513 | **/ | |
514 | static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring) | |
515 | { | |
516 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
517 | struct igbvf_buffer *buffer_info; | |
518 | unsigned long size; | |
519 | unsigned int i; | |
520 | ||
521 | if (!tx_ring->buffer_info) | |
522 | return; | |
523 | ||
524 | /* Free all the Tx ring sk_buffs */ | |
525 | for (i = 0; i < tx_ring->count; i++) { | |
526 | buffer_info = &tx_ring->buffer_info[i]; | |
527 | igbvf_put_txbuf(adapter, buffer_info); | |
528 | } | |
529 | ||
530 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
531 | memset(tx_ring->buffer_info, 0, size); | |
532 | ||
533 | /* Zero out the descriptor ring */ | |
534 | memset(tx_ring->desc, 0, tx_ring->size); | |
535 | ||
536 | tx_ring->next_to_use = 0; | |
537 | tx_ring->next_to_clean = 0; | |
538 | ||
539 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
540 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
541 | } | |
542 | ||
543 | /** | |
544 | * igbvf_free_tx_resources - Free Tx Resources per Queue | |
545 | * @tx_ring: ring to free resources from | |
546 | * | |
547 | * Free all transmit software resources | |
548 | **/ | |
549 | void igbvf_free_tx_resources(struct igbvf_ring *tx_ring) | |
550 | { | |
551 | struct pci_dev *pdev = tx_ring->adapter->pdev; | |
552 | ||
553 | igbvf_clean_tx_ring(tx_ring); | |
554 | ||
555 | vfree(tx_ring->buffer_info); | |
556 | tx_ring->buffer_info = NULL; | |
557 | ||
123e9f1a NN |
558 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
559 | tx_ring->dma); | |
d4e0fe01 AD |
560 | |
561 | tx_ring->desc = NULL; | |
562 | } | |
563 | ||
564 | /** | |
565 | * igbvf_clean_rx_ring - Free Rx Buffers per Queue | |
566 | * @adapter: board private structure | |
567 | **/ | |
568 | static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring) | |
569 | { | |
570 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
571 | struct igbvf_buffer *buffer_info; | |
572 | struct pci_dev *pdev = adapter->pdev; | |
573 | unsigned long size; | |
574 | unsigned int i; | |
575 | ||
576 | if (!rx_ring->buffer_info) | |
577 | return; | |
578 | ||
579 | /* Free all the Rx ring sk_buffs */ | |
580 | for (i = 0; i < rx_ring->count; i++) { | |
581 | buffer_info = &rx_ring->buffer_info[i]; | |
582 | if (buffer_info->dma) { | |
583 | if (adapter->rx_ps_hdr_size){ | |
123e9f1a | 584 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 585 | adapter->rx_ps_hdr_size, |
123e9f1a | 586 | DMA_FROM_DEVICE); |
d4e0fe01 | 587 | } else { |
123e9f1a | 588 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
d4e0fe01 | 589 | adapter->rx_buffer_len, |
123e9f1a | 590 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
591 | } |
592 | buffer_info->dma = 0; | |
593 | } | |
594 | ||
595 | if (buffer_info->skb) { | |
596 | dev_kfree_skb(buffer_info->skb); | |
597 | buffer_info->skb = NULL; | |
598 | } | |
599 | ||
600 | if (buffer_info->page) { | |
601 | if (buffer_info->page_dma) | |
123e9f1a NN |
602 | dma_unmap_page(&pdev->dev, |
603 | buffer_info->page_dma, | |
d4e0fe01 | 604 | PAGE_SIZE / 2, |
123e9f1a | 605 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
606 | put_page(buffer_info->page); |
607 | buffer_info->page = NULL; | |
608 | buffer_info->page_dma = 0; | |
609 | buffer_info->page_offset = 0; | |
610 | } | |
611 | } | |
612 | ||
613 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
614 | memset(rx_ring->buffer_info, 0, size); | |
615 | ||
616 | /* Zero out the descriptor ring */ | |
617 | memset(rx_ring->desc, 0, rx_ring->size); | |
618 | ||
619 | rx_ring->next_to_clean = 0; | |
620 | rx_ring->next_to_use = 0; | |
621 | ||
622 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
623 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
624 | } | |
625 | ||
626 | /** | |
627 | * igbvf_free_rx_resources - Free Rx Resources | |
628 | * @rx_ring: ring to clean the resources from | |
629 | * | |
630 | * Free all receive software resources | |
631 | **/ | |
632 | ||
633 | void igbvf_free_rx_resources(struct igbvf_ring *rx_ring) | |
634 | { | |
635 | struct pci_dev *pdev = rx_ring->adapter->pdev; | |
636 | ||
637 | igbvf_clean_rx_ring(rx_ring); | |
638 | ||
639 | vfree(rx_ring->buffer_info); | |
640 | rx_ring->buffer_info = NULL; | |
641 | ||
642 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
643 | rx_ring->dma); | |
644 | rx_ring->desc = NULL; | |
645 | } | |
646 | ||
647 | /** | |
648 | * igbvf_update_itr - update the dynamic ITR value based on statistics | |
649 | * @adapter: pointer to adapter | |
650 | * @itr_setting: current adapter->itr | |
651 | * @packets: the number of packets during this measurement interval | |
652 | * @bytes: the number of bytes during this measurement interval | |
653 | * | |
654 | * Stores a new ITR value based on packets and byte | |
655 | * counts during the last interrupt. The advantage of per interrupt | |
656 | * computation is faster updates and more accurate ITR for the current | |
657 | * traffic pattern. Constants in this function were computed | |
658 | * based on theoretical maximum wire speed and thresholds were set based | |
659 | * on testing data as well as attempting to minimize response time | |
ab50a2a4 | 660 | * while increasing bulk throughput. |
d4e0fe01 | 661 | **/ |
ab50a2a4 MW |
662 | static enum latency_range igbvf_update_itr(struct igbvf_adapter *adapter, |
663 | enum latency_range itr_setting, | |
664 | int packets, int bytes) | |
d4e0fe01 | 665 | { |
ab50a2a4 | 666 | enum latency_range retval = itr_setting; |
d4e0fe01 AD |
667 | |
668 | if (packets == 0) | |
669 | goto update_itr_done; | |
670 | ||
671 | switch (itr_setting) { | |
672 | case lowest_latency: | |
673 | /* handle TSO and jumbo frames */ | |
674 | if (bytes/packets > 8000) | |
675 | retval = bulk_latency; | |
676 | else if ((packets < 5) && (bytes > 512)) | |
677 | retval = low_latency; | |
678 | break; | |
679 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
680 | if (bytes > 10000) { | |
681 | /* this if handles the TSO accounting */ | |
682 | if (bytes/packets > 8000) | |
683 | retval = bulk_latency; | |
684 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
685 | retval = bulk_latency; | |
686 | else if ((packets > 35)) | |
687 | retval = lowest_latency; | |
688 | } else if (bytes/packets > 2000) { | |
689 | retval = bulk_latency; | |
690 | } else if (packets <= 2 && bytes < 512) { | |
691 | retval = lowest_latency; | |
692 | } | |
693 | break; | |
694 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
695 | if (bytes > 25000) { | |
696 | if (packets > 35) | |
697 | retval = low_latency; | |
698 | } else if (bytes < 6000) { | |
699 | retval = low_latency; | |
700 | } | |
701 | break; | |
ab50a2a4 MW |
702 | default: |
703 | break; | |
d4e0fe01 AD |
704 | } |
705 | ||
706 | update_itr_done: | |
707 | return retval; | |
708 | } | |
709 | ||
ab50a2a4 | 710 | static int igbvf_range_to_itr(enum latency_range current_range) |
d4e0fe01 | 711 | { |
ab50a2a4 | 712 | int new_itr; |
d4e0fe01 | 713 | |
ab50a2a4 | 714 | switch (current_range) { |
d4e0fe01 AD |
715 | /* counts and packets in update_itr are dependent on these numbers */ |
716 | case lowest_latency: | |
ab50a2a4 | 717 | new_itr = IGBVF_70K_ITR; |
d4e0fe01 AD |
718 | break; |
719 | case low_latency: | |
ab50a2a4 | 720 | new_itr = IGBVF_20K_ITR; |
d4e0fe01 AD |
721 | break; |
722 | case bulk_latency: | |
ab50a2a4 | 723 | new_itr = IGBVF_4K_ITR; |
d4e0fe01 AD |
724 | break; |
725 | default: | |
ab50a2a4 | 726 | new_itr = IGBVF_START_ITR; |
d4e0fe01 AD |
727 | break; |
728 | } | |
ab50a2a4 MW |
729 | return new_itr; |
730 | } | |
731 | ||
732 | static void igbvf_set_itr(struct igbvf_adapter *adapter) | |
733 | { | |
734 | u32 new_itr; | |
735 | ||
736 | adapter->tx_ring->itr_range = | |
737 | igbvf_update_itr(adapter, | |
738 | adapter->tx_ring->itr_val, | |
739 | adapter->total_tx_packets, | |
740 | adapter->total_tx_bytes); | |
741 | ||
742 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
743 | if (adapter->requested_itr == 3 && | |
744 | adapter->tx_ring->itr_range == lowest_latency) | |
745 | adapter->tx_ring->itr_range = low_latency; | |
d4e0fe01 | 746 | |
ab50a2a4 MW |
747 | new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range); |
748 | ||
749 | ||
750 | if (new_itr != adapter->tx_ring->itr_val) { | |
751 | u32 current_itr = adapter->tx_ring->itr_val; | |
d4e0fe01 AD |
752 | /* |
753 | * this attempts to bias the interrupt rate towards Bulk | |
754 | * by adding intermediate steps when interrupt rate is | |
755 | * increasing | |
756 | */ | |
ab50a2a4 MW |
757 | new_itr = new_itr > current_itr ? |
758 | min(current_itr + (new_itr >> 2), new_itr) : | |
759 | new_itr; | |
760 | adapter->tx_ring->itr_val = new_itr; | |
761 | ||
762 | adapter->tx_ring->set_itr = 1; | |
763 | } | |
764 | ||
765 | adapter->rx_ring->itr_range = | |
766 | igbvf_update_itr(adapter, adapter->rx_ring->itr_val, | |
767 | adapter->total_rx_packets, | |
768 | adapter->total_rx_bytes); | |
769 | if (adapter->requested_itr == 3 && | |
770 | adapter->rx_ring->itr_range == lowest_latency) | |
771 | adapter->rx_ring->itr_range = low_latency; | |
772 | ||
773 | new_itr = igbvf_range_to_itr(adapter->rx_ring->itr_range); | |
774 | ||
775 | if (new_itr != adapter->rx_ring->itr_val) { | |
776 | u32 current_itr = adapter->rx_ring->itr_val; | |
777 | new_itr = new_itr > current_itr ? | |
778 | min(current_itr + (new_itr >> 2), new_itr) : | |
779 | new_itr; | |
780 | adapter->rx_ring->itr_val = new_itr; | |
781 | ||
782 | adapter->rx_ring->set_itr = 1; | |
d4e0fe01 AD |
783 | } |
784 | } | |
785 | ||
786 | /** | |
787 | * igbvf_clean_tx_irq - Reclaim resources after transmit completes | |
788 | * @adapter: board private structure | |
49ce9c2c | 789 | * |
d4e0fe01 AD |
790 | * returns true if ring is completely cleaned |
791 | **/ | |
792 | static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring) | |
793 | { | |
794 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
d4e0fe01 AD |
795 | struct net_device *netdev = adapter->netdev; |
796 | struct igbvf_buffer *buffer_info; | |
797 | struct sk_buff *skb; | |
798 | union e1000_adv_tx_desc *tx_desc, *eop_desc; | |
799 | unsigned int total_bytes = 0, total_packets = 0; | |
800 | unsigned int i, eop, count = 0; | |
801 | bool cleaned = false; | |
802 | ||
803 | i = tx_ring->next_to_clean; | |
804 | eop = tx_ring->buffer_info[i].next_to_watch; | |
805 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
806 | ||
807 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
808 | (count < tx_ring->count)) { | |
2d0bb1c1 | 809 | rmb(); /* read buffer_info after eop_desc status */ |
d4e0fe01 AD |
810 | for (cleaned = false; !cleaned; count++) { |
811 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
812 | buffer_info = &tx_ring->buffer_info[i]; | |
813 | cleaned = (i == eop); | |
814 | skb = buffer_info->skb; | |
815 | ||
816 | if (skb) { | |
817 | unsigned int segs, bytecount; | |
818 | ||
819 | /* gso_segs is currently only valid for tcp */ | |
820 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
821 | /* multiply data chunks by size of headers */ | |
822 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
823 | skb->len; | |
824 | total_packets += segs; | |
825 | total_bytes += bytecount; | |
826 | } | |
827 | ||
828 | igbvf_put_txbuf(adapter, buffer_info); | |
829 | tx_desc->wb.status = 0; | |
830 | ||
831 | i++; | |
832 | if (i == tx_ring->count) | |
833 | i = 0; | |
834 | } | |
835 | eop = tx_ring->buffer_info[i].next_to_watch; | |
836 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
837 | } | |
838 | ||
839 | tx_ring->next_to_clean = i; | |
840 | ||
841 | if (unlikely(count && | |
842 | netif_carrier_ok(netdev) && | |
843 | igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) { | |
844 | /* Make sure that anybody stopping the queue after this | |
845 | * sees the new next_to_clean. | |
846 | */ | |
847 | smp_mb(); | |
848 | if (netif_queue_stopped(netdev) && | |
849 | !(test_bit(__IGBVF_DOWN, &adapter->state))) { | |
850 | netif_wake_queue(netdev); | |
851 | ++adapter->restart_queue; | |
852 | } | |
853 | } | |
854 | ||
d4e0fe01 AD |
855 | adapter->net_stats.tx_bytes += total_bytes; |
856 | adapter->net_stats.tx_packets += total_packets; | |
807540ba | 857 | return count < tx_ring->count; |
d4e0fe01 AD |
858 | } |
859 | ||
860 | static irqreturn_t igbvf_msix_other(int irq, void *data) | |
861 | { | |
862 | struct net_device *netdev = data; | |
863 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
864 | struct e1000_hw *hw = &adapter->hw; | |
865 | ||
866 | adapter->int_counter1++; | |
867 | ||
868 | netif_carrier_off(netdev); | |
869 | hw->mac.get_link_status = 1; | |
870 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
871 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
872 | ||
873 | ew32(EIMS, adapter->eims_other); | |
874 | ||
875 | return IRQ_HANDLED; | |
876 | } | |
877 | ||
878 | static irqreturn_t igbvf_intr_msix_tx(int irq, void *data) | |
879 | { | |
880 | struct net_device *netdev = data; | |
881 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
882 | struct e1000_hw *hw = &adapter->hw; | |
883 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
884 | ||
ab50a2a4 MW |
885 | if (tx_ring->set_itr) { |
886 | writel(tx_ring->itr_val, | |
887 | adapter->hw.hw_addr + tx_ring->itr_register); | |
888 | adapter->tx_ring->set_itr = 0; | |
889 | } | |
d4e0fe01 AD |
890 | |
891 | adapter->total_tx_bytes = 0; | |
892 | adapter->total_tx_packets = 0; | |
893 | ||
894 | /* auto mask will automatically reenable the interrupt when we write | |
895 | * EICS */ | |
896 | if (!igbvf_clean_tx_irq(tx_ring)) | |
897 | /* Ring was not completely cleaned, so fire another interrupt */ | |
898 | ew32(EICS, tx_ring->eims_value); | |
899 | else | |
900 | ew32(EIMS, tx_ring->eims_value); | |
901 | ||
902 | return IRQ_HANDLED; | |
903 | } | |
904 | ||
905 | static irqreturn_t igbvf_intr_msix_rx(int irq, void *data) | |
906 | { | |
907 | struct net_device *netdev = data; | |
908 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
909 | ||
910 | adapter->int_counter0++; | |
911 | ||
912 | /* Write the ITR value calculated at the end of the | |
913 | * previous interrupt. | |
914 | */ | |
915 | if (adapter->rx_ring->set_itr) { | |
916 | writel(adapter->rx_ring->itr_val, | |
917 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
918 | adapter->rx_ring->set_itr = 0; | |
919 | } | |
920 | ||
921 | if (napi_schedule_prep(&adapter->rx_ring->napi)) { | |
922 | adapter->total_rx_bytes = 0; | |
923 | adapter->total_rx_packets = 0; | |
924 | __napi_schedule(&adapter->rx_ring->napi); | |
925 | } | |
926 | ||
927 | return IRQ_HANDLED; | |
928 | } | |
929 | ||
930 | #define IGBVF_NO_QUEUE -1 | |
931 | ||
932 | static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue, | |
933 | int tx_queue, int msix_vector) | |
934 | { | |
935 | struct e1000_hw *hw = &adapter->hw; | |
936 | u32 ivar, index; | |
937 | ||
938 | /* 82576 uses a table-based method for assigning vectors. | |
939 | Each queue has a single entry in the table to which we write | |
940 | a vector number along with a "valid" bit. Sadly, the layout | |
941 | of the table is somewhat counterintuitive. */ | |
942 | if (rx_queue > IGBVF_NO_QUEUE) { | |
943 | index = (rx_queue >> 1); | |
944 | ivar = array_er32(IVAR0, index); | |
945 | if (rx_queue & 0x1) { | |
946 | /* vector goes into third byte of register */ | |
947 | ivar = ivar & 0xFF00FFFF; | |
948 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
949 | } else { | |
950 | /* vector goes into low byte of register */ | |
951 | ivar = ivar & 0xFFFFFF00; | |
952 | ivar |= msix_vector | E1000_IVAR_VALID; | |
953 | } | |
954 | adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector; | |
955 | array_ew32(IVAR0, index, ivar); | |
956 | } | |
957 | if (tx_queue > IGBVF_NO_QUEUE) { | |
958 | index = (tx_queue >> 1); | |
959 | ivar = array_er32(IVAR0, index); | |
960 | if (tx_queue & 0x1) { | |
961 | /* vector goes into high byte of register */ | |
962 | ivar = ivar & 0x00FFFFFF; | |
963 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
964 | } else { | |
965 | /* vector goes into second byte of register */ | |
966 | ivar = ivar & 0xFFFF00FF; | |
967 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
968 | } | |
969 | adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector; | |
970 | array_ew32(IVAR0, index, ivar); | |
971 | } | |
972 | } | |
973 | ||
974 | /** | |
975 | * igbvf_configure_msix - Configure MSI-X hardware | |
976 | * | |
977 | * igbvf_configure_msix sets up the hardware to properly | |
978 | * generate MSI-X interrupts. | |
979 | **/ | |
980 | static void igbvf_configure_msix(struct igbvf_adapter *adapter) | |
981 | { | |
982 | u32 tmp; | |
983 | struct e1000_hw *hw = &adapter->hw; | |
984 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
985 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
986 | int vector = 0; | |
987 | ||
988 | adapter->eims_enable_mask = 0; | |
989 | ||
990 | igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++); | |
991 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
ab50a2a4 | 992 | writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register); |
d4e0fe01 AD |
993 | igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++); |
994 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
ab50a2a4 | 995 | writel(rx_ring->itr_val, hw->hw_addr + rx_ring->itr_register); |
d4e0fe01 AD |
996 | |
997 | /* set vector for other causes, i.e. link changes */ | |
998 | ||
999 | tmp = (vector++ | E1000_IVAR_VALID); | |
1000 | ||
1001 | ew32(IVAR_MISC, tmp); | |
1002 | ||
1003 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
1004 | adapter->eims_other = 1 << (vector - 1); | |
1005 | e1e_flush(); | |
1006 | } | |
1007 | ||
2d165771 | 1008 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1009 | { |
1010 | if (adapter->msix_entries) { | |
1011 | pci_disable_msix(adapter->pdev); | |
1012 | kfree(adapter->msix_entries); | |
1013 | adapter->msix_entries = NULL; | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | /** | |
1018 | * igbvf_set_interrupt_capability - set MSI or MSI-X if supported | |
1019 | * | |
1020 | * Attempt to configure interrupts using the best available | |
1021 | * capabilities of the hardware and kernel. | |
1022 | **/ | |
2d165771 | 1023 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1024 | { |
1025 | int err = -ENOMEM; | |
1026 | int i; | |
1027 | ||
1028 | /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */ | |
1029 | adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry), | |
1030 | GFP_KERNEL); | |
1031 | if (adapter->msix_entries) { | |
1032 | for (i = 0; i < 3; i++) | |
1033 | adapter->msix_entries[i].entry = i; | |
1034 | ||
1035 | err = pci_enable_msix(adapter->pdev, | |
1036 | adapter->msix_entries, 3); | |
1037 | } | |
1038 | ||
1039 | if (err) { | |
1040 | /* MSI-X failed */ | |
1041 | dev_err(&adapter->pdev->dev, | |
1042 | "Failed to initialize MSI-X interrupts.\n"); | |
1043 | igbvf_reset_interrupt_capability(adapter); | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | /** | |
1048 | * igbvf_request_msix - Initialize MSI-X interrupts | |
1049 | * | |
1050 | * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the | |
1051 | * kernel. | |
1052 | **/ | |
1053 | static int igbvf_request_msix(struct igbvf_adapter *adapter) | |
1054 | { | |
1055 | struct net_device *netdev = adapter->netdev; | |
1056 | int err = 0, vector = 0; | |
1057 | ||
1058 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) { | |
1059 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); | |
1060 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); | |
1061 | } else { | |
1062 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1063 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1064 | } | |
1065 | ||
1066 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1067 | igbvf_intr_msix_tx, 0, adapter->tx_ring->name, |
d4e0fe01 AD |
1068 | netdev); |
1069 | if (err) | |
1070 | goto out; | |
1071 | ||
1072 | adapter->tx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1073 | adapter->tx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1074 | vector++; |
1075 | ||
1076 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1077 | igbvf_intr_msix_rx, 0, adapter->rx_ring->name, |
d4e0fe01 AD |
1078 | netdev); |
1079 | if (err) | |
1080 | goto out; | |
1081 | ||
1082 | adapter->rx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1083 | adapter->rx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1084 | vector++; |
1085 | ||
1086 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1087 | igbvf_msix_other, 0, netdev->name, netdev); |
d4e0fe01 AD |
1088 | if (err) |
1089 | goto out; | |
1090 | ||
1091 | igbvf_configure_msix(adapter); | |
1092 | return 0; | |
1093 | out: | |
1094 | return err; | |
1095 | } | |
1096 | ||
1097 | /** | |
1098 | * igbvf_alloc_queues - Allocate memory for all rings | |
1099 | * @adapter: board private structure to initialize | |
1100 | **/ | |
9f9a12f8 | 1101 | static int igbvf_alloc_queues(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1102 | { |
1103 | struct net_device *netdev = adapter->netdev; | |
1104 | ||
1105 | adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1106 | if (!adapter->tx_ring) | |
1107 | return -ENOMEM; | |
1108 | ||
1109 | adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1110 | if (!adapter->rx_ring) { | |
1111 | kfree(adapter->tx_ring); | |
1112 | return -ENOMEM; | |
1113 | } | |
1114 | ||
1115 | netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64); | |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | /** | |
1121 | * igbvf_request_irq - initialize interrupts | |
1122 | * | |
1123 | * Attempts to configure interrupts using the best available | |
1124 | * capabilities of the hardware and kernel. | |
1125 | **/ | |
1126 | static int igbvf_request_irq(struct igbvf_adapter *adapter) | |
1127 | { | |
1128 | int err = -1; | |
1129 | ||
1130 | /* igbvf supports msi-x only */ | |
1131 | if (adapter->msix_entries) | |
1132 | err = igbvf_request_msix(adapter); | |
1133 | ||
1134 | if (!err) | |
1135 | return err; | |
1136 | ||
1137 | dev_err(&adapter->pdev->dev, | |
1138 | "Unable to allocate interrupt, Error: %d\n", err); | |
1139 | ||
1140 | return err; | |
1141 | } | |
1142 | ||
1143 | static void igbvf_free_irq(struct igbvf_adapter *adapter) | |
1144 | { | |
1145 | struct net_device *netdev = adapter->netdev; | |
1146 | int vector; | |
1147 | ||
1148 | if (adapter->msix_entries) { | |
1149 | for (vector = 0; vector < 3; vector++) | |
1150 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | /** | |
1155 | * igbvf_irq_disable - Mask off interrupt generation on the NIC | |
1156 | **/ | |
1157 | static void igbvf_irq_disable(struct igbvf_adapter *adapter) | |
1158 | { | |
1159 | struct e1000_hw *hw = &adapter->hw; | |
1160 | ||
1161 | ew32(EIMC, ~0); | |
1162 | ||
1163 | if (adapter->msix_entries) | |
1164 | ew32(EIAC, 0); | |
1165 | } | |
1166 | ||
1167 | /** | |
1168 | * igbvf_irq_enable - Enable default interrupt generation settings | |
1169 | **/ | |
1170 | static void igbvf_irq_enable(struct igbvf_adapter *adapter) | |
1171 | { | |
1172 | struct e1000_hw *hw = &adapter->hw; | |
1173 | ||
1174 | ew32(EIAC, adapter->eims_enable_mask); | |
1175 | ew32(EIAM, adapter->eims_enable_mask); | |
1176 | ew32(EIMS, adapter->eims_enable_mask); | |
1177 | } | |
1178 | ||
1179 | /** | |
1180 | * igbvf_poll - NAPI Rx polling callback | |
1181 | * @napi: struct associated with this polling callback | |
1182 | * @budget: amount of packets driver is allowed to process this poll | |
1183 | **/ | |
1184 | static int igbvf_poll(struct napi_struct *napi, int budget) | |
1185 | { | |
1186 | struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi); | |
1187 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
1188 | struct e1000_hw *hw = &adapter->hw; | |
1189 | int work_done = 0; | |
1190 | ||
1191 | igbvf_clean_rx_irq(adapter, &work_done, budget); | |
1192 | ||
1193 | /* If not enough Rx work done, exit the polling mode */ | |
1194 | if (work_done < budget) { | |
1195 | napi_complete(napi); | |
1196 | ||
ab50a2a4 | 1197 | if (adapter->requested_itr & 3) |
d4e0fe01 AD |
1198 | igbvf_set_itr(adapter); |
1199 | ||
1200 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1201 | ew32(EIMS, adapter->rx_ring->eims_value); | |
1202 | } | |
1203 | ||
1204 | return work_done; | |
1205 | } | |
1206 | ||
1207 | /** | |
1208 | * igbvf_set_rlpml - set receive large packet maximum length | |
1209 | * @adapter: board private structure | |
1210 | * | |
1211 | * Configure the maximum size of packets that will be received | |
1212 | */ | |
1213 | static void igbvf_set_rlpml(struct igbvf_adapter *adapter) | |
1214 | { | |
a0f1d603 | 1215 | int max_frame_size; |
d4e0fe01 AD |
1216 | struct e1000_hw *hw = &adapter->hw; |
1217 | ||
a0f1d603 | 1218 | max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE; |
d4e0fe01 AD |
1219 | e1000_rlpml_set_vf(hw, max_frame_size); |
1220 | } | |
1221 | ||
8e586137 | 1222 | static int igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
d4e0fe01 AD |
1223 | { |
1224 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1225 | struct e1000_hw *hw = &adapter->hw; | |
1226 | ||
8e586137 | 1227 | if (hw->mac.ops.set_vfta(hw, vid, true)) { |
d4e0fe01 | 1228 | dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid); |
8e586137 JP |
1229 | return -EINVAL; |
1230 | } | |
1231 | set_bit(vid, adapter->active_vlans); | |
1232 | return 0; | |
d4e0fe01 AD |
1233 | } |
1234 | ||
8e586137 | 1235 | static int igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
d4e0fe01 AD |
1236 | { |
1237 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1238 | struct e1000_hw *hw = &adapter->hw; | |
1239 | ||
8e586137 | 1240 | if (hw->mac.ops.set_vfta(hw, vid, false)) { |
d4e0fe01 AD |
1241 | dev_err(&adapter->pdev->dev, |
1242 | "Failed to remove vlan id %d\n", vid); | |
8e586137 JP |
1243 | return -EINVAL; |
1244 | } | |
1245 | clear_bit(vid, adapter->active_vlans); | |
1246 | return 0; | |
d4e0fe01 AD |
1247 | } |
1248 | ||
1249 | static void igbvf_restore_vlan(struct igbvf_adapter *adapter) | |
1250 | { | |
1251 | u16 vid; | |
1252 | ||
a0f1d603 | 1253 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
d4e0fe01 | 1254 | igbvf_vlan_rx_add_vid(adapter->netdev, vid); |
d4e0fe01 AD |
1255 | } |
1256 | ||
1257 | /** | |
1258 | * igbvf_configure_tx - Configure Transmit Unit after Reset | |
1259 | * @adapter: board private structure | |
1260 | * | |
1261 | * Configure the Tx unit of the MAC after a reset. | |
1262 | **/ | |
1263 | static void igbvf_configure_tx(struct igbvf_adapter *adapter) | |
1264 | { | |
1265 | struct e1000_hw *hw = &adapter->hw; | |
1266 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1267 | u64 tdba; | |
1268 | u32 txdctl, dca_txctrl; | |
1269 | ||
1270 | /* disable transmits */ | |
1271 | txdctl = er32(TXDCTL(0)); | |
1272 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
945a5151 | 1273 | e1e_flush(); |
d4e0fe01 AD |
1274 | msleep(10); |
1275 | ||
1276 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1277 | ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc)); | |
1278 | tdba = tx_ring->dma; | |
8e20ce94 | 1279 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1280 | ew32(TDBAH(0), (tdba >> 32)); |
1281 | ew32(TDH(0), 0); | |
1282 | ew32(TDT(0), 0); | |
1283 | tx_ring->head = E1000_TDH(0); | |
1284 | tx_ring->tail = E1000_TDT(0); | |
1285 | ||
1286 | /* Turn off Relaxed Ordering on head write-backs. The writebacks | |
1287 | * MUST be delivered in order or it will completely screw up | |
1288 | * our bookeeping. | |
1289 | */ | |
1290 | dca_txctrl = er32(DCA_TXCTRL(0)); | |
1291 | dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; | |
1292 | ew32(DCA_TXCTRL(0), dca_txctrl); | |
1293 | ||
1294 | /* enable transmits */ | |
1295 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
1296 | ew32(TXDCTL(0), txdctl); | |
1297 | ||
1298 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1299 | adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS; | |
1300 | ||
1301 | /* enable Report Status bit */ | |
1302 | adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS; | |
d4e0fe01 AD |
1303 | } |
1304 | ||
1305 | /** | |
1306 | * igbvf_setup_srrctl - configure the receive control registers | |
1307 | * @adapter: Board private structure | |
1308 | **/ | |
1309 | static void igbvf_setup_srrctl(struct igbvf_adapter *adapter) | |
1310 | { | |
1311 | struct e1000_hw *hw = &adapter->hw; | |
1312 | u32 srrctl = 0; | |
1313 | ||
1314 | srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK | | |
1315 | E1000_SRRCTL_BSIZEHDR_MASK | | |
1316 | E1000_SRRCTL_BSIZEPKT_MASK); | |
1317 | ||
1318 | /* Enable queue drop to avoid head of line blocking */ | |
1319 | srrctl |= E1000_SRRCTL_DROP_EN; | |
1320 | ||
1321 | /* Setup buffer sizes */ | |
1322 | srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >> | |
1323 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1324 | ||
1325 | if (adapter->rx_buffer_len < 2048) { | |
1326 | adapter->rx_ps_hdr_size = 0; | |
1327 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1328 | } else { | |
1329 | adapter->rx_ps_hdr_size = 128; | |
1330 | srrctl |= adapter->rx_ps_hdr_size << | |
1331 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; | |
1332 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1333 | } | |
1334 | ||
1335 | ew32(SRRCTL(0), srrctl); | |
1336 | } | |
1337 | ||
1338 | /** | |
1339 | * igbvf_configure_rx - Configure Receive Unit after Reset | |
1340 | * @adapter: board private structure | |
1341 | * | |
1342 | * Configure the Rx unit of the MAC after a reset. | |
1343 | **/ | |
1344 | static void igbvf_configure_rx(struct igbvf_adapter *adapter) | |
1345 | { | |
1346 | struct e1000_hw *hw = &adapter->hw; | |
1347 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
1348 | u64 rdba; | |
1349 | u32 rdlen, rxdctl; | |
1350 | ||
1351 | /* disable receives */ | |
1352 | rxdctl = er32(RXDCTL(0)); | |
1353 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
945a5151 | 1354 | e1e_flush(); |
d4e0fe01 AD |
1355 | msleep(10); |
1356 | ||
1357 | rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc); | |
1358 | ||
1359 | /* | |
1360 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
1361 | * the Base and Length of the Rx Descriptor Ring | |
1362 | */ | |
1363 | rdba = rx_ring->dma; | |
8e20ce94 | 1364 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1365 | ew32(RDBAH(0), (rdba >> 32)); |
1366 | ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc)); | |
1367 | rx_ring->head = E1000_RDH(0); | |
1368 | rx_ring->tail = E1000_RDT(0); | |
1369 | ew32(RDH(0), 0); | |
1370 | ew32(RDT(0), 0); | |
1371 | ||
1372 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
1373 | rxdctl &= 0xFFF00000; | |
1374 | rxdctl |= IGBVF_RX_PTHRESH; | |
1375 | rxdctl |= IGBVF_RX_HTHRESH << 8; | |
1376 | rxdctl |= IGBVF_RX_WTHRESH << 16; | |
1377 | ||
1378 | igbvf_set_rlpml(adapter); | |
1379 | ||
1380 | /* enable receives */ | |
1381 | ew32(RXDCTL(0), rxdctl); | |
1382 | } | |
1383 | ||
1384 | /** | |
1385 | * igbvf_set_multi - Multicast and Promiscuous mode set | |
1386 | * @netdev: network interface device structure | |
1387 | * | |
1388 | * The set_multi entry point is called whenever the multicast address | |
1389 | * list or the network interface flags are updated. This routine is | |
1390 | * responsible for configuring the hardware for proper multicast, | |
1391 | * promiscuous mode, and all-multi behavior. | |
1392 | **/ | |
1393 | static void igbvf_set_multi(struct net_device *netdev) | |
1394 | { | |
1395 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1396 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 1397 | struct netdev_hw_addr *ha; |
d4e0fe01 AD |
1398 | u8 *mta_list = NULL; |
1399 | int i; | |
1400 | ||
4cd24eaf | 1401 | if (!netdev_mc_empty(netdev)) { |
b2adaca9 JP |
1402 | mta_list = kmalloc_array(netdev_mc_count(netdev), ETH_ALEN, |
1403 | GFP_ATOMIC); | |
1404 | if (!mta_list) | |
d4e0fe01 | 1405 | return; |
d4e0fe01 AD |
1406 | } |
1407 | ||
1408 | /* prepare a packed array of only addresses. */ | |
48e2f183 | 1409 | i = 0; |
22bedad3 JP |
1410 | netdev_for_each_mc_addr(ha, netdev) |
1411 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
d4e0fe01 AD |
1412 | |
1413 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0); | |
1414 | kfree(mta_list); | |
1415 | } | |
1416 | ||
1417 | /** | |
1418 | * igbvf_configure - configure the hardware for Rx and Tx | |
1419 | * @adapter: private board structure | |
1420 | **/ | |
1421 | static void igbvf_configure(struct igbvf_adapter *adapter) | |
1422 | { | |
1423 | igbvf_set_multi(adapter->netdev); | |
1424 | ||
1425 | igbvf_restore_vlan(adapter); | |
1426 | ||
1427 | igbvf_configure_tx(adapter); | |
1428 | igbvf_setup_srrctl(adapter); | |
1429 | igbvf_configure_rx(adapter); | |
1430 | igbvf_alloc_rx_buffers(adapter->rx_ring, | |
1431 | igbvf_desc_unused(adapter->rx_ring)); | |
1432 | } | |
1433 | ||
1434 | /* igbvf_reset - bring the hardware into a known good state | |
1435 | * | |
1436 | * This function boots the hardware and enables some settings that | |
1437 | * require a configuration cycle of the hardware - those cannot be | |
1438 | * set/changed during runtime. After reset the device needs to be | |
1439 | * properly configured for Rx, Tx etc. | |
1440 | */ | |
2d165771 | 1441 | static void igbvf_reset(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1442 | { |
1443 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1444 | struct net_device *netdev = adapter->netdev; | |
1445 | struct e1000_hw *hw = &adapter->hw; | |
1446 | ||
1447 | /* Allow time for pending master requests to run */ | |
1448 | if (mac->ops.reset_hw(hw)) | |
1449 | dev_err(&adapter->pdev->dev, "PF still resetting\n"); | |
1450 | ||
1451 | mac->ops.init_hw(hw); | |
1452 | ||
1453 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1454 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1455 | netdev->addr_len); | |
1456 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1457 | netdev->addr_len); | |
1458 | } | |
72279093 AD |
1459 | |
1460 | adapter->last_reset = jiffies; | |
d4e0fe01 AD |
1461 | } |
1462 | ||
1463 | int igbvf_up(struct igbvf_adapter *adapter) | |
1464 | { | |
1465 | struct e1000_hw *hw = &adapter->hw; | |
1466 | ||
1467 | /* hardware has been reset, we need to reload some things */ | |
1468 | igbvf_configure(adapter); | |
1469 | ||
1470 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1471 | ||
1472 | napi_enable(&adapter->rx_ring->napi); | |
1473 | if (adapter->msix_entries) | |
1474 | igbvf_configure_msix(adapter); | |
1475 | ||
1476 | /* Clear any pending interrupts. */ | |
1477 | er32(EICR); | |
1478 | igbvf_irq_enable(adapter); | |
1479 | ||
1480 | /* start the watchdog */ | |
1481 | hw->mac.get_link_status = 1; | |
1482 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1483 | ||
1484 | ||
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | void igbvf_down(struct igbvf_adapter *adapter) | |
1489 | { | |
1490 | struct net_device *netdev = adapter->netdev; | |
1491 | struct e1000_hw *hw = &adapter->hw; | |
1492 | u32 rxdctl, txdctl; | |
1493 | ||
1494 | /* | |
1495 | * signal that we're down so the interrupt handler does not | |
1496 | * reschedule our watchdog timer | |
1497 | */ | |
1498 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1499 | ||
1500 | /* disable receives in the hardware */ | |
1501 | rxdctl = er32(RXDCTL(0)); | |
1502 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1503 | ||
1504 | netif_stop_queue(netdev); | |
1505 | ||
1506 | /* disable transmits in the hardware */ | |
1507 | txdctl = er32(TXDCTL(0)); | |
1508 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1509 | ||
1510 | /* flush both disables and wait for them to finish */ | |
1511 | e1e_flush(); | |
1512 | msleep(10); | |
1513 | ||
1514 | napi_disable(&adapter->rx_ring->napi); | |
1515 | ||
1516 | igbvf_irq_disable(adapter); | |
1517 | ||
1518 | del_timer_sync(&adapter->watchdog_timer); | |
1519 | ||
d4e0fe01 AD |
1520 | netif_carrier_off(netdev); |
1521 | ||
1522 | /* record the stats before reset*/ | |
1523 | igbvf_update_stats(adapter); | |
1524 | ||
1525 | adapter->link_speed = 0; | |
1526 | adapter->link_duplex = 0; | |
1527 | ||
1528 | igbvf_reset(adapter); | |
1529 | igbvf_clean_tx_ring(adapter->tx_ring); | |
1530 | igbvf_clean_rx_ring(adapter->rx_ring); | |
1531 | } | |
1532 | ||
1533 | void igbvf_reinit_locked(struct igbvf_adapter *adapter) | |
1534 | { | |
1535 | might_sleep(); | |
1536 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
1537 | msleep(1); | |
1538 | igbvf_down(adapter); | |
1539 | igbvf_up(adapter); | |
1540 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
1541 | } | |
1542 | ||
1543 | /** | |
1544 | * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter) | |
1545 | * @adapter: board private structure to initialize | |
1546 | * | |
1547 | * igbvf_sw_init initializes the Adapter private data structure. | |
1548 | * Fields are initialized based on PCI device information and | |
1549 | * OS network device settings (MTU size). | |
1550 | **/ | |
9f9a12f8 | 1551 | static int igbvf_sw_init(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1552 | { |
1553 | struct net_device *netdev = adapter->netdev; | |
1554 | s32 rc; | |
1555 | ||
1556 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
1557 | adapter->rx_ps_hdr_size = 0; | |
1558 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1559 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1560 | ||
1561 | adapter->tx_int_delay = 8; | |
1562 | adapter->tx_abs_int_delay = 32; | |
1563 | adapter->rx_int_delay = 0; | |
1564 | adapter->rx_abs_int_delay = 8; | |
ab50a2a4 MW |
1565 | adapter->requested_itr = 3; |
1566 | adapter->current_itr = IGBVF_START_ITR; | |
d4e0fe01 AD |
1567 | |
1568 | /* Set various function pointers */ | |
1569 | adapter->ei->init_ops(&adapter->hw); | |
1570 | ||
1571 | rc = adapter->hw.mac.ops.init_params(&adapter->hw); | |
1572 | if (rc) | |
1573 | return rc; | |
1574 | ||
1575 | rc = adapter->hw.mbx.ops.init_params(&adapter->hw); | |
1576 | if (rc) | |
1577 | return rc; | |
1578 | ||
1579 | igbvf_set_interrupt_capability(adapter); | |
1580 | ||
1581 | if (igbvf_alloc_queues(adapter)) | |
1582 | return -ENOMEM; | |
1583 | ||
1584 | spin_lock_init(&adapter->tx_queue_lock); | |
1585 | ||
1586 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1587 | igbvf_irq_disable(adapter); | |
1588 | ||
1589 | spin_lock_init(&adapter->stats_lock); | |
1590 | ||
1591 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter) | |
1596 | { | |
1597 | struct e1000_hw *hw = &adapter->hw; | |
1598 | ||
1599 | adapter->stats.last_gprc = er32(VFGPRC); | |
1600 | adapter->stats.last_gorc = er32(VFGORC); | |
1601 | adapter->stats.last_gptc = er32(VFGPTC); | |
1602 | adapter->stats.last_gotc = er32(VFGOTC); | |
1603 | adapter->stats.last_mprc = er32(VFMPRC); | |
1604 | adapter->stats.last_gotlbc = er32(VFGOTLBC); | |
1605 | adapter->stats.last_gptlbc = er32(VFGPTLBC); | |
1606 | adapter->stats.last_gorlbc = er32(VFGORLBC); | |
1607 | adapter->stats.last_gprlbc = er32(VFGPRLBC); | |
1608 | ||
1609 | adapter->stats.base_gprc = er32(VFGPRC); | |
1610 | adapter->stats.base_gorc = er32(VFGORC); | |
1611 | adapter->stats.base_gptc = er32(VFGPTC); | |
1612 | adapter->stats.base_gotc = er32(VFGOTC); | |
1613 | adapter->stats.base_mprc = er32(VFMPRC); | |
1614 | adapter->stats.base_gotlbc = er32(VFGOTLBC); | |
1615 | adapter->stats.base_gptlbc = er32(VFGPTLBC); | |
1616 | adapter->stats.base_gorlbc = er32(VFGORLBC); | |
1617 | adapter->stats.base_gprlbc = er32(VFGPRLBC); | |
1618 | } | |
1619 | ||
1620 | /** | |
1621 | * igbvf_open - Called when a network interface is made active | |
1622 | * @netdev: network interface device structure | |
1623 | * | |
1624 | * Returns 0 on success, negative value on failure | |
1625 | * | |
1626 | * The open entry point is called when a network interface is made | |
1627 | * active by the system (IFF_UP). At this point all resources needed | |
1628 | * for transmit and receive operations are allocated, the interrupt | |
1629 | * handler is registered with the OS, the watchdog timer is started, | |
1630 | * and the stack is notified that the interface is ready. | |
1631 | **/ | |
1632 | static int igbvf_open(struct net_device *netdev) | |
1633 | { | |
1634 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1635 | struct e1000_hw *hw = &adapter->hw; | |
1636 | int err; | |
1637 | ||
1638 | /* disallow open during test */ | |
1639 | if (test_bit(__IGBVF_TESTING, &adapter->state)) | |
1640 | return -EBUSY; | |
1641 | ||
1642 | /* allocate transmit descriptors */ | |
1643 | err = igbvf_setup_tx_resources(adapter, adapter->tx_ring); | |
1644 | if (err) | |
1645 | goto err_setup_tx; | |
1646 | ||
1647 | /* allocate receive descriptors */ | |
1648 | err = igbvf_setup_rx_resources(adapter, adapter->rx_ring); | |
1649 | if (err) | |
1650 | goto err_setup_rx; | |
1651 | ||
1652 | /* | |
1653 | * before we allocate an interrupt, we must be ready to handle it. | |
1654 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1655 | * as soon as we call pci_request_irq, so we have to setup our | |
1656 | * clean_rx handler before we do so. | |
1657 | */ | |
1658 | igbvf_configure(adapter); | |
1659 | ||
1660 | err = igbvf_request_irq(adapter); | |
1661 | if (err) | |
1662 | goto err_req_irq; | |
1663 | ||
1664 | /* From here on the code is the same as igbvf_up() */ | |
1665 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1666 | ||
1667 | napi_enable(&adapter->rx_ring->napi); | |
1668 | ||
1669 | /* clear any pending interrupts */ | |
1670 | er32(EICR); | |
1671 | ||
1672 | igbvf_irq_enable(adapter); | |
1673 | ||
1674 | /* start the watchdog */ | |
1675 | hw->mac.get_link_status = 1; | |
1676 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1677 | ||
1678 | return 0; | |
1679 | ||
1680 | err_req_irq: | |
1681 | igbvf_free_rx_resources(adapter->rx_ring); | |
1682 | err_setup_rx: | |
1683 | igbvf_free_tx_resources(adapter->tx_ring); | |
1684 | err_setup_tx: | |
1685 | igbvf_reset(adapter); | |
1686 | ||
1687 | return err; | |
1688 | } | |
1689 | ||
1690 | /** | |
1691 | * igbvf_close - Disables a network interface | |
1692 | * @netdev: network interface device structure | |
1693 | * | |
1694 | * Returns 0, this is not allowed to fail | |
1695 | * | |
1696 | * The close entry point is called when an interface is de-activated | |
1697 | * by the OS. The hardware is still under the drivers control, but | |
1698 | * needs to be disabled. A global MAC reset is issued to stop the | |
1699 | * hardware, and all transmit and receive resources are freed. | |
1700 | **/ | |
1701 | static int igbvf_close(struct net_device *netdev) | |
1702 | { | |
1703 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1704 | ||
1705 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
1706 | igbvf_down(adapter); | |
1707 | ||
1708 | igbvf_free_irq(adapter); | |
1709 | ||
1710 | igbvf_free_tx_resources(adapter->tx_ring); | |
1711 | igbvf_free_rx_resources(adapter->rx_ring); | |
1712 | ||
1713 | return 0; | |
1714 | } | |
1715 | /** | |
1716 | * igbvf_set_mac - Change the Ethernet Address of the NIC | |
1717 | * @netdev: network interface device structure | |
1718 | * @p: pointer to an address structure | |
1719 | * | |
1720 | * Returns 0 on success, negative on failure | |
1721 | **/ | |
1722 | static int igbvf_set_mac(struct net_device *netdev, void *p) | |
1723 | { | |
1724 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1725 | struct e1000_hw *hw = &adapter->hw; | |
1726 | struct sockaddr *addr = p; | |
1727 | ||
1728 | if (!is_valid_ether_addr(addr->sa_data)) | |
1729 | return -EADDRNOTAVAIL; | |
1730 | ||
1731 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
1732 | ||
1733 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); | |
1734 | ||
1735 | if (memcmp(addr->sa_data, hw->mac.addr, 6)) | |
1736 | return -EADDRNOTAVAIL; | |
1737 | ||
1738 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1739 | ||
1740 | return 0; | |
1741 | } | |
1742 | ||
1743 | #define UPDATE_VF_COUNTER(reg, name) \ | |
1744 | { \ | |
1745 | u32 current_counter = er32(reg); \ | |
1746 | if (current_counter < adapter->stats.last_##name) \ | |
1747 | adapter->stats.name += 0x100000000LL; \ | |
1748 | adapter->stats.last_##name = current_counter; \ | |
1749 | adapter->stats.name &= 0xFFFFFFFF00000000LL; \ | |
1750 | adapter->stats.name |= current_counter; \ | |
1751 | } | |
1752 | ||
1753 | /** | |
1754 | * igbvf_update_stats - Update the board statistics counters | |
1755 | * @adapter: board private structure | |
1756 | **/ | |
1757 | void igbvf_update_stats(struct igbvf_adapter *adapter) | |
1758 | { | |
1759 | struct e1000_hw *hw = &adapter->hw; | |
1760 | struct pci_dev *pdev = adapter->pdev; | |
1761 | ||
1762 | /* | |
1763 | * Prevent stats update while adapter is being reset, link is down | |
1764 | * or if the pci connection is down. | |
1765 | */ | |
1766 | if (adapter->link_speed == 0) | |
1767 | return; | |
1768 | ||
1769 | if (test_bit(__IGBVF_RESETTING, &adapter->state)) | |
1770 | return; | |
1771 | ||
1772 | if (pci_channel_offline(pdev)) | |
1773 | return; | |
1774 | ||
1775 | UPDATE_VF_COUNTER(VFGPRC, gprc); | |
1776 | UPDATE_VF_COUNTER(VFGORC, gorc); | |
1777 | UPDATE_VF_COUNTER(VFGPTC, gptc); | |
1778 | UPDATE_VF_COUNTER(VFGOTC, gotc); | |
1779 | UPDATE_VF_COUNTER(VFMPRC, mprc); | |
1780 | UPDATE_VF_COUNTER(VFGOTLBC, gotlbc); | |
1781 | UPDATE_VF_COUNTER(VFGPTLBC, gptlbc); | |
1782 | UPDATE_VF_COUNTER(VFGORLBC, gorlbc); | |
1783 | UPDATE_VF_COUNTER(VFGPRLBC, gprlbc); | |
1784 | ||
1785 | /* Fill out the OS statistics structure */ | |
1786 | adapter->net_stats.multicast = adapter->stats.mprc; | |
1787 | } | |
1788 | ||
1789 | static void igbvf_print_link_info(struct igbvf_adapter *adapter) | |
1790 | { | |
a4ba8cbe JK |
1791 | dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s Duplex\n", |
1792 | adapter->link_speed, | |
1793 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half"); | |
d4e0fe01 AD |
1794 | } |
1795 | ||
1796 | static bool igbvf_has_link(struct igbvf_adapter *adapter) | |
1797 | { | |
1798 | struct e1000_hw *hw = &adapter->hw; | |
1799 | s32 ret_val = E1000_SUCCESS; | |
1800 | bool link_active; | |
1801 | ||
72279093 AD |
1802 | /* If interface is down, stay link down */ |
1803 | if (test_bit(__IGBVF_DOWN, &adapter->state)) | |
1804 | return false; | |
1805 | ||
d4e0fe01 AD |
1806 | ret_val = hw->mac.ops.check_for_link(hw); |
1807 | link_active = !hw->mac.get_link_status; | |
1808 | ||
1809 | /* if check for link returns error we will need to reset */ | |
72279093 | 1810 | if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ))) |
d4e0fe01 AD |
1811 | schedule_work(&adapter->reset_task); |
1812 | ||
1813 | return link_active; | |
1814 | } | |
1815 | ||
1816 | /** | |
1817 | * igbvf_watchdog - Timer Call-back | |
1818 | * @data: pointer to adapter cast into an unsigned long | |
1819 | **/ | |
1820 | static void igbvf_watchdog(unsigned long data) | |
1821 | { | |
1822 | struct igbvf_adapter *adapter = (struct igbvf_adapter *) data; | |
1823 | ||
1824 | /* Do the rest outside of interrupt context */ | |
1825 | schedule_work(&adapter->watchdog_task); | |
1826 | } | |
1827 | ||
1828 | static void igbvf_watchdog_task(struct work_struct *work) | |
1829 | { | |
1830 | struct igbvf_adapter *adapter = container_of(work, | |
1831 | struct igbvf_adapter, | |
1832 | watchdog_task); | |
1833 | struct net_device *netdev = adapter->netdev; | |
1834 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1835 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1836 | struct e1000_hw *hw = &adapter->hw; | |
1837 | u32 link; | |
1838 | int tx_pending = 0; | |
1839 | ||
1840 | link = igbvf_has_link(adapter); | |
1841 | ||
1842 | if (link) { | |
1843 | if (!netif_carrier_ok(netdev)) { | |
d4e0fe01 AD |
1844 | mac->ops.get_link_up_info(&adapter->hw, |
1845 | &adapter->link_speed, | |
1846 | &adapter->link_duplex); | |
1847 | igbvf_print_link_info(adapter); | |
1848 | ||
d4e0fe01 AD |
1849 | netif_carrier_on(netdev); |
1850 | netif_wake_queue(netdev); | |
1851 | } | |
1852 | } else { | |
1853 | if (netif_carrier_ok(netdev)) { | |
1854 | adapter->link_speed = 0; | |
1855 | adapter->link_duplex = 0; | |
1856 | dev_info(&adapter->pdev->dev, "Link is Down\n"); | |
1857 | netif_carrier_off(netdev); | |
1858 | netif_stop_queue(netdev); | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | if (netif_carrier_ok(netdev)) { | |
1863 | igbvf_update_stats(adapter); | |
1864 | } else { | |
1865 | tx_pending = (igbvf_desc_unused(tx_ring) + 1 < | |
1866 | tx_ring->count); | |
1867 | if (tx_pending) { | |
1868 | /* | |
1869 | * We've lost link, so the controller stops DMA, | |
1870 | * but we've got queued Tx work that's never going | |
1871 | * to get done, so reset controller to flush Tx. | |
1872 | * (Do the reset outside of interrupt context). | |
1873 | */ | |
1874 | adapter->tx_timeout_count++; | |
1875 | schedule_work(&adapter->reset_task); | |
1876 | } | |
1877 | } | |
1878 | ||
1879 | /* Cause software interrupt to ensure Rx ring is cleaned */ | |
1880 | ew32(EICS, adapter->rx_ring->eims_value); | |
1881 | ||
d4e0fe01 AD |
1882 | /* Reset the timer */ |
1883 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1884 | mod_timer(&adapter->watchdog_timer, | |
1885 | round_jiffies(jiffies + (2 * HZ))); | |
1886 | } | |
1887 | ||
1888 | #define IGBVF_TX_FLAGS_CSUM 0x00000001 | |
1889 | #define IGBVF_TX_FLAGS_VLAN 0x00000002 | |
1890 | #define IGBVF_TX_FLAGS_TSO 0x00000004 | |
1891 | #define IGBVF_TX_FLAGS_IPV4 0x00000008 | |
1892 | #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1893 | #define IGBVF_TX_FLAGS_VLAN_SHIFT 16 | |
1894 | ||
1895 | static int igbvf_tso(struct igbvf_adapter *adapter, | |
1896 | struct igbvf_ring *tx_ring, | |
1897 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
1898 | { | |
1899 | struct e1000_adv_tx_context_desc *context_desc; | |
1900 | unsigned int i; | |
1901 | int err; | |
1902 | struct igbvf_buffer *buffer_info; | |
1903 | u32 info = 0, tu_cmd = 0; | |
1904 | u32 mss_l4len_idx, l4len; | |
1905 | *hdr_len = 0; | |
1906 | ||
1907 | if (skb_header_cloned(skb)) { | |
1908 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1909 | if (err) { | |
1910 | dev_err(&adapter->pdev->dev, | |
1911 | "igbvf_tso returning an error\n"); | |
1912 | return err; | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | l4len = tcp_hdrlen(skb); | |
1917 | *hdr_len += l4len; | |
1918 | ||
1919 | if (skb->protocol == htons(ETH_P_IP)) { | |
1920 | struct iphdr *iph = ip_hdr(skb); | |
1921 | iph->tot_len = 0; | |
1922 | iph->check = 0; | |
1923 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1924 | iph->daddr, 0, | |
1925 | IPPROTO_TCP, | |
1926 | 0); | |
8e1e8a47 | 1927 | } else if (skb_is_gso_v6(skb)) { |
d4e0fe01 AD |
1928 | ipv6_hdr(skb)->payload_len = 0; |
1929 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
1930 | &ipv6_hdr(skb)->daddr, | |
1931 | 0, IPPROTO_TCP, 0); | |
1932 | } | |
1933 | ||
1934 | i = tx_ring->next_to_use; | |
1935 | ||
1936 | buffer_info = &tx_ring->buffer_info[i]; | |
1937 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1938 | /* VLAN MACLEN IPLEN */ | |
1939 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1940 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1941 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1942 | *hdr_len += skb_network_offset(skb); | |
1943 | info |= (skb_transport_header(skb) - skb_network_header(skb)); | |
1944 | *hdr_len += (skb_transport_header(skb) - skb_network_header(skb)); | |
1945 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1946 | ||
1947 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
1948 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1949 | ||
1950 | if (skb->protocol == htons(ETH_P_IP)) | |
1951 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1952 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1953 | ||
1954 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
1955 | ||
1956 | /* MSS L4LEN IDX */ | |
1957 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
1958 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
1959 | ||
1960 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
1961 | context_desc->seqnum_seed = 0; | |
1962 | ||
1963 | buffer_info->time_stamp = jiffies; | |
1964 | buffer_info->next_to_watch = i; | |
1965 | buffer_info->dma = 0; | |
1966 | i++; | |
1967 | if (i == tx_ring->count) | |
1968 | i = 0; | |
1969 | ||
1970 | tx_ring->next_to_use = i; | |
1971 | ||
1972 | return true; | |
1973 | } | |
1974 | ||
1975 | static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter, | |
1976 | struct igbvf_ring *tx_ring, | |
1977 | struct sk_buff *skb, u32 tx_flags) | |
1978 | { | |
1979 | struct e1000_adv_tx_context_desc *context_desc; | |
1980 | unsigned int i; | |
1981 | struct igbvf_buffer *buffer_info; | |
1982 | u32 info = 0, tu_cmd = 0; | |
1983 | ||
1984 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
1985 | (tx_flags & IGBVF_TX_FLAGS_VLAN)) { | |
1986 | i = tx_ring->next_to_use; | |
1987 | buffer_info = &tx_ring->buffer_info[i]; | |
1988 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1989 | ||
1990 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1991 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1992 | ||
1993 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1994 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
1995 | info |= (skb_transport_header(skb) - | |
1996 | skb_network_header(skb)); | |
1997 | ||
1998 | ||
1999 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
2000 | ||
2001 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
2002 | ||
2003 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2004 | switch (skb->protocol) { | |
2005 | case __constant_htons(ETH_P_IP): | |
2006 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
2007 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
2008 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2009 | break; | |
2010 | case __constant_htons(ETH_P_IPV6): | |
2011 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2012 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2013 | break; | |
2014 | default: | |
2015 | break; | |
2016 | } | |
2017 | } | |
2018 | ||
2019 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2020 | context_desc->seqnum_seed = 0; | |
2021 | context_desc->mss_l4len_idx = 0; | |
2022 | ||
2023 | buffer_info->time_stamp = jiffies; | |
2024 | buffer_info->next_to_watch = i; | |
2025 | buffer_info->dma = 0; | |
2026 | i++; | |
2027 | if (i == tx_ring->count) | |
2028 | i = 0; | |
2029 | tx_ring->next_to_use = i; | |
2030 | ||
2031 | return true; | |
2032 | } | |
2033 | ||
2034 | return false; | |
2035 | } | |
2036 | ||
2037 | static int igbvf_maybe_stop_tx(struct net_device *netdev, int size) | |
2038 | { | |
2039 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2040 | ||
2041 | /* there is enough descriptors then we don't need to worry */ | |
2042 | if (igbvf_desc_unused(adapter->tx_ring) >= size) | |
2043 | return 0; | |
2044 | ||
2045 | netif_stop_queue(netdev); | |
2046 | ||
2047 | smp_mb(); | |
2048 | ||
2049 | /* We need to check again just in case room has been made available */ | |
2050 | if (igbvf_desc_unused(adapter->tx_ring) < size) | |
2051 | return -EBUSY; | |
2052 | ||
2053 | netif_wake_queue(netdev); | |
2054 | ||
2055 | ++adapter->restart_queue; | |
2056 | return 0; | |
2057 | } | |
2058 | ||
2059 | #define IGBVF_MAX_TXD_PWR 16 | |
2060 | #define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR) | |
2061 | ||
2062 | static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, | |
2063 | struct igbvf_ring *tx_ring, | |
2064 | struct sk_buff *skb, | |
2065 | unsigned int first) | |
2066 | { | |
2067 | struct igbvf_buffer *buffer_info; | |
a7d5ca40 | 2068 | struct pci_dev *pdev = adapter->pdev; |
d4e0fe01 AD |
2069 | unsigned int len = skb_headlen(skb); |
2070 | unsigned int count = 0, i; | |
2071 | unsigned int f; | |
d4e0fe01 AD |
2072 | |
2073 | i = tx_ring->next_to_use; | |
2074 | ||
d4e0fe01 AD |
2075 | buffer_info = &tx_ring->buffer_info[i]; |
2076 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2077 | buffer_info->length = len; | |
2078 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2079 | buffer_info->time_stamp = jiffies; | |
2080 | buffer_info->next_to_watch = i; | |
ac26d7d6 | 2081 | buffer_info->mapped_as_page = false; |
123e9f1a NN |
2082 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len, |
2083 | DMA_TO_DEVICE); | |
2084 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 AD |
2085 | goto dma_error; |
2086 | ||
d4e0fe01 AD |
2087 | |
2088 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
9e903e08 | 2089 | const struct skb_frag_struct *frag; |
d4e0fe01 | 2090 | |
8581145f | 2091 | count++; |
d4e0fe01 AD |
2092 | i++; |
2093 | if (i == tx_ring->count) | |
2094 | i = 0; | |
2095 | ||
2096 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 2097 | len = skb_frag_size(frag); |
d4e0fe01 AD |
2098 | |
2099 | buffer_info = &tx_ring->buffer_info[i]; | |
2100 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2101 | buffer_info->length = len; | |
2102 | buffer_info->time_stamp = jiffies; | |
2103 | buffer_info->next_to_watch = i; | |
a7d5ca40 | 2104 | buffer_info->mapped_as_page = true; |
877749bf | 2105 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, 0, len, |
123e9f1a NN |
2106 | DMA_TO_DEVICE); |
2107 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 | 2108 | goto dma_error; |
d4e0fe01 AD |
2109 | } |
2110 | ||
2111 | tx_ring->buffer_info[i].skb = skb; | |
2112 | tx_ring->buffer_info[first].next_to_watch = i; | |
2113 | ||
a7d5ca40 AD |
2114 | return ++count; |
2115 | ||
2116 | dma_error: | |
2117 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2118 | ||
2119 | /* clear timestamp and dma mappings for failed buffer_info mapping */ | |
2120 | buffer_info->dma = 0; | |
2121 | buffer_info->time_stamp = 0; | |
2122 | buffer_info->length = 0; | |
2123 | buffer_info->next_to_watch = 0; | |
2124 | buffer_info->mapped_as_page = false; | |
c1fa347f RK |
2125 | if (count) |
2126 | count--; | |
a7d5ca40 AD |
2127 | |
2128 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
c1fa347f RK |
2129 | while (count--) { |
2130 | if (i==0) | |
a7d5ca40 | 2131 | i += tx_ring->count; |
c1fa347f | 2132 | i--; |
a7d5ca40 AD |
2133 | buffer_info = &tx_ring->buffer_info[i]; |
2134 | igbvf_put_txbuf(adapter, buffer_info); | |
2135 | } | |
2136 | ||
2137 | return 0; | |
d4e0fe01 AD |
2138 | } |
2139 | ||
2140 | static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, | |
2141 | struct igbvf_ring *tx_ring, | |
2142 | int tx_flags, int count, u32 paylen, | |
2143 | u8 hdr_len) | |
2144 | { | |
2145 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2146 | struct igbvf_buffer *buffer_info; | |
2147 | u32 olinfo_status = 0, cmd_type_len; | |
2148 | unsigned int i; | |
2149 | ||
2150 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
2151 | E1000_ADVTXD_DCMD_DEXT); | |
2152 | ||
2153 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2154 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2155 | ||
2156 | if (tx_flags & IGBVF_TX_FLAGS_TSO) { | |
2157 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2158 | ||
2159 | /* insert tcp checksum */ | |
2160 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2161 | ||
2162 | /* insert ip checksum */ | |
2163 | if (tx_flags & IGBVF_TX_FLAGS_IPV4) | |
2164 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2165 | ||
2166 | } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) { | |
2167 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2168 | } | |
2169 | ||
2170 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2171 | ||
2172 | i = tx_ring->next_to_use; | |
2173 | while (count--) { | |
2174 | buffer_info = &tx_ring->buffer_info[i]; | |
2175 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
2176 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2177 | tx_desc->read.cmd_type_len = | |
2178 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
2179 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2180 | i++; | |
2181 | if (i == tx_ring->count) | |
2182 | i = 0; | |
2183 | } | |
2184 | ||
2185 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2186 | /* Force memory writes to complete before letting h/w | |
2187 | * know there are new descriptors to fetch. (Only | |
2188 | * applicable for weak-ordered memory model archs, | |
2189 | * such as IA-64). */ | |
2190 | wmb(); | |
2191 | ||
2192 | tx_ring->next_to_use = i; | |
2193 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2194 | /* we need this if more than one processor can write to our tail | |
2195 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2196 | mmiowb(); | |
2197 | } | |
2198 | ||
3b29a56d SH |
2199 | static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb, |
2200 | struct net_device *netdev, | |
2201 | struct igbvf_ring *tx_ring) | |
d4e0fe01 AD |
2202 | { |
2203 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2204 | unsigned int first, tx_flags = 0; | |
2205 | u8 hdr_len = 0; | |
2206 | int count = 0; | |
2207 | int tso = 0; | |
2208 | ||
2209 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2210 | dev_kfree_skb_any(skb); | |
2211 | return NETDEV_TX_OK; | |
2212 | } | |
2213 | ||
2214 | if (skb->len <= 0) { | |
2215 | dev_kfree_skb_any(skb); | |
2216 | return NETDEV_TX_OK; | |
2217 | } | |
2218 | ||
2219 | /* | |
2220 | * need: count + 4 desc gap to keep tail from touching | |
2221 | * + 2 desc gap to keep tail from touching head, | |
2222 | * + 1 desc for skb->data, | |
2223 | * + 1 desc for context descriptor, | |
2224 | * head, otherwise try next time | |
2225 | */ | |
2226 | if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) { | |
2227 | /* this is a hard error */ | |
2228 | return NETDEV_TX_BUSY; | |
2229 | } | |
2230 | ||
a0f1d603 | 2231 | if (vlan_tx_tag_present(skb)) { |
d4e0fe01 AD |
2232 | tx_flags |= IGBVF_TX_FLAGS_VLAN; |
2233 | tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT); | |
2234 | } | |
2235 | ||
2236 | if (skb->protocol == htons(ETH_P_IP)) | |
2237 | tx_flags |= IGBVF_TX_FLAGS_IPV4; | |
2238 | ||
2239 | first = tx_ring->next_to_use; | |
2240 | ||
2241 | tso = skb_is_gso(skb) ? | |
2242 | igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0; | |
2243 | if (unlikely(tso < 0)) { | |
2244 | dev_kfree_skb_any(skb); | |
2245 | return NETDEV_TX_OK; | |
2246 | } | |
2247 | ||
2248 | if (tso) | |
2249 | tx_flags |= IGBVF_TX_FLAGS_TSO; | |
2250 | else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2251 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2252 | tx_flags |= IGBVF_TX_FLAGS_CSUM; | |
2253 | ||
2254 | /* | |
2255 | * count reflects descriptors mapped, if 0 then mapping error | |
25985edc | 2256 | * has occurred and we need to rewind the descriptor queue |
d4e0fe01 AD |
2257 | */ |
2258 | count = igbvf_tx_map_adv(adapter, tx_ring, skb, first); | |
2259 | ||
2260 | if (count) { | |
2261 | igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count, | |
2262 | skb->len, hdr_len); | |
d4e0fe01 AD |
2263 | /* Make sure there is space in the ring for the next send. */ |
2264 | igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4); | |
2265 | } else { | |
2266 | dev_kfree_skb_any(skb); | |
2267 | tx_ring->buffer_info[first].time_stamp = 0; | |
2268 | tx_ring->next_to_use = first; | |
2269 | } | |
2270 | ||
2271 | return NETDEV_TX_OK; | |
2272 | } | |
2273 | ||
3b29a56d SH |
2274 | static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb, |
2275 | struct net_device *netdev) | |
d4e0fe01 AD |
2276 | { |
2277 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2278 | struct igbvf_ring *tx_ring; | |
d4e0fe01 AD |
2279 | |
2280 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2281 | dev_kfree_skb_any(skb); | |
2282 | return NETDEV_TX_OK; | |
2283 | } | |
2284 | ||
2285 | tx_ring = &adapter->tx_ring[0]; | |
2286 | ||
3b29a56d | 2287 | return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring); |
d4e0fe01 AD |
2288 | } |
2289 | ||
2290 | /** | |
2291 | * igbvf_tx_timeout - Respond to a Tx Hang | |
2292 | * @netdev: network interface device structure | |
2293 | **/ | |
2294 | static void igbvf_tx_timeout(struct net_device *netdev) | |
2295 | { | |
2296 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2297 | ||
2298 | /* Do the reset outside of interrupt context */ | |
2299 | adapter->tx_timeout_count++; | |
2300 | schedule_work(&adapter->reset_task); | |
2301 | } | |
2302 | ||
2303 | static void igbvf_reset_task(struct work_struct *work) | |
2304 | { | |
2305 | struct igbvf_adapter *adapter; | |
2306 | adapter = container_of(work, struct igbvf_adapter, reset_task); | |
2307 | ||
2308 | igbvf_reinit_locked(adapter); | |
2309 | } | |
2310 | ||
2311 | /** | |
2312 | * igbvf_get_stats - Get System Network Statistics | |
2313 | * @netdev: network interface device structure | |
2314 | * | |
2315 | * Returns the address of the device statistics structure. | |
2316 | * The statistics are actually updated from the timer callback. | |
2317 | **/ | |
2318 | static struct net_device_stats *igbvf_get_stats(struct net_device *netdev) | |
2319 | { | |
2320 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2321 | ||
2322 | /* only return the current stats */ | |
2323 | return &adapter->net_stats; | |
2324 | } | |
2325 | ||
2326 | /** | |
2327 | * igbvf_change_mtu - Change the Maximum Transfer Unit | |
2328 | * @netdev: network interface device structure | |
2329 | * @new_mtu: new value for maximum frame size | |
2330 | * | |
2331 | * Returns 0 on success, negative on failure | |
2332 | **/ | |
2333 | static int igbvf_change_mtu(struct net_device *netdev, int new_mtu) | |
2334 | { | |
2335 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2336 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2337 | ||
2338 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2339 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
2340 | return -EINVAL; | |
2341 | } | |
2342 | ||
d4e0fe01 AD |
2343 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
2344 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
2345 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
2346 | return -EINVAL; | |
2347 | } | |
2348 | ||
2349 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
2350 | msleep(1); | |
2351 | /* igbvf_down has a dependency on max_frame_size */ | |
2352 | adapter->max_frame_size = max_frame; | |
2353 | if (netif_running(netdev)) | |
2354 | igbvf_down(adapter); | |
2355 | ||
2356 | /* | |
2357 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
2358 | * means we reserve 2 more, this pushes us to allocate from the next | |
2359 | * larger slab size. | |
2360 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
2361 | * However with the new *_jumbo_rx* routines, jumbo receives will use | |
2362 | * fragmented skbs | |
2363 | */ | |
2364 | ||
2365 | if (max_frame <= 1024) | |
2366 | adapter->rx_buffer_len = 1024; | |
2367 | else if (max_frame <= 2048) | |
2368 | adapter->rx_buffer_len = 2048; | |
2369 | else | |
2370 | #if (PAGE_SIZE / 2) > 16384 | |
2371 | adapter->rx_buffer_len = 16384; | |
2372 | #else | |
2373 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
2374 | #endif | |
2375 | ||
2376 | ||
2377 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
2378 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
2379 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
2380 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + | |
2381 | ETH_FCS_LEN; | |
2382 | ||
2383 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
2384 | netdev->mtu, new_mtu); | |
2385 | netdev->mtu = new_mtu; | |
2386 | ||
2387 | if (netif_running(netdev)) | |
2388 | igbvf_up(adapter); | |
2389 | else | |
2390 | igbvf_reset(adapter); | |
2391 | ||
2392 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2393 | ||
2394 | return 0; | |
2395 | } | |
2396 | ||
2397 | static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2398 | { | |
2399 | switch (cmd) { | |
2400 | default: | |
2401 | return -EOPNOTSUPP; | |
2402 | } | |
2403 | } | |
2404 | ||
2405 | static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2406 | { | |
2407 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2408 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2409 | #ifdef CONFIG_PM | |
2410 | int retval = 0; | |
2411 | #endif | |
2412 | ||
2413 | netif_device_detach(netdev); | |
2414 | ||
2415 | if (netif_running(netdev)) { | |
2416 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
2417 | igbvf_down(adapter); | |
2418 | igbvf_free_irq(adapter); | |
2419 | } | |
2420 | ||
2421 | #ifdef CONFIG_PM | |
2422 | retval = pci_save_state(pdev); | |
2423 | if (retval) | |
2424 | return retval; | |
2425 | #endif | |
2426 | ||
2427 | pci_disable_device(pdev); | |
2428 | ||
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | #ifdef CONFIG_PM | |
2433 | static int igbvf_resume(struct pci_dev *pdev) | |
2434 | { | |
2435 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2436 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2437 | u32 err; | |
2438 | ||
2439 | pci_restore_state(pdev); | |
2440 | err = pci_enable_device_mem(pdev); | |
2441 | if (err) { | |
2442 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); | |
2443 | return err; | |
2444 | } | |
2445 | ||
2446 | pci_set_master(pdev); | |
2447 | ||
2448 | if (netif_running(netdev)) { | |
2449 | err = igbvf_request_irq(adapter); | |
2450 | if (err) | |
2451 | return err; | |
2452 | } | |
2453 | ||
2454 | igbvf_reset(adapter); | |
2455 | ||
2456 | if (netif_running(netdev)) | |
2457 | igbvf_up(adapter); | |
2458 | ||
2459 | netif_device_attach(netdev); | |
2460 | ||
2461 | return 0; | |
2462 | } | |
2463 | #endif | |
2464 | ||
2465 | static void igbvf_shutdown(struct pci_dev *pdev) | |
2466 | { | |
2467 | igbvf_suspend(pdev, PMSG_SUSPEND); | |
2468 | } | |
2469 | ||
2470 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2471 | /* | |
2472 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2473 | * without having to re-enable interrupts. It's not called while | |
2474 | * the interrupt routine is executing. | |
2475 | */ | |
2476 | static void igbvf_netpoll(struct net_device *netdev) | |
2477 | { | |
2478 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2479 | ||
2480 | disable_irq(adapter->pdev->irq); | |
2481 | ||
2482 | igbvf_clean_tx_irq(adapter->tx_ring); | |
2483 | ||
2484 | enable_irq(adapter->pdev->irq); | |
2485 | } | |
2486 | #endif | |
2487 | ||
2488 | /** | |
2489 | * igbvf_io_error_detected - called when PCI error is detected | |
2490 | * @pdev: Pointer to PCI device | |
2491 | * @state: The current pci connection state | |
2492 | * | |
2493 | * This function is called after a PCI bus error affecting | |
2494 | * this device has been detected. | |
2495 | */ | |
2496 | static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev, | |
2497 | pci_channel_state_t state) | |
2498 | { | |
2499 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2500 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2501 | ||
2502 | netif_device_detach(netdev); | |
2503 | ||
c06c430d DN |
2504 | if (state == pci_channel_io_perm_failure) |
2505 | return PCI_ERS_RESULT_DISCONNECT; | |
2506 | ||
d4e0fe01 AD |
2507 | if (netif_running(netdev)) |
2508 | igbvf_down(adapter); | |
2509 | pci_disable_device(pdev); | |
2510 | ||
2511 | /* Request a slot slot reset. */ | |
2512 | return PCI_ERS_RESULT_NEED_RESET; | |
2513 | } | |
2514 | ||
2515 | /** | |
2516 | * igbvf_io_slot_reset - called after the pci bus has been reset. | |
2517 | * @pdev: Pointer to PCI device | |
2518 | * | |
2519 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2520 | * resembles the first-half of the igbvf_resume routine. | |
2521 | */ | |
2522 | static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev) | |
2523 | { | |
2524 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2525 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2526 | ||
2527 | if (pci_enable_device_mem(pdev)) { | |
2528 | dev_err(&pdev->dev, | |
2529 | "Cannot re-enable PCI device after reset.\n"); | |
2530 | return PCI_ERS_RESULT_DISCONNECT; | |
2531 | } | |
2532 | pci_set_master(pdev); | |
2533 | ||
2534 | igbvf_reset(adapter); | |
2535 | ||
2536 | return PCI_ERS_RESULT_RECOVERED; | |
2537 | } | |
2538 | ||
2539 | /** | |
2540 | * igbvf_io_resume - called when traffic can start flowing again. | |
2541 | * @pdev: Pointer to PCI device | |
2542 | * | |
2543 | * This callback is called when the error recovery driver tells us that | |
2544 | * its OK to resume normal operation. Implementation resembles the | |
2545 | * second-half of the igbvf_resume routine. | |
2546 | */ | |
2547 | static void igbvf_io_resume(struct pci_dev *pdev) | |
2548 | { | |
2549 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2550 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2551 | ||
2552 | if (netif_running(netdev)) { | |
2553 | if (igbvf_up(adapter)) { | |
2554 | dev_err(&pdev->dev, | |
2555 | "can't bring device back up after reset\n"); | |
2556 | return; | |
2557 | } | |
2558 | } | |
2559 | ||
2560 | netif_device_attach(netdev); | |
2561 | } | |
2562 | ||
2563 | static void igbvf_print_device_info(struct igbvf_adapter *adapter) | |
2564 | { | |
2565 | struct e1000_hw *hw = &adapter->hw; | |
2566 | struct net_device *netdev = adapter->netdev; | |
2567 | struct pci_dev *pdev = adapter->pdev; | |
2568 | ||
10090751 WM |
2569 | if (hw->mac.type == e1000_vfadapt_i350) |
2570 | dev_info(&pdev->dev, "Intel(R) I350 Virtual Function\n"); | |
2571 | else | |
2572 | dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n"); | |
753cdc33 | 2573 | dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr); |
d4e0fe01 AD |
2574 | } |
2575 | ||
c8f44aff MM |
2576 | static int igbvf_set_features(struct net_device *netdev, |
2577 | netdev_features_t features) | |
fd38f734 MM |
2578 | { |
2579 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2580 | ||
2581 | if (features & NETIF_F_RXCSUM) | |
2582 | adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED; | |
2583 | else | |
2584 | adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED; | |
2585 | ||
2586 | return 0; | |
2587 | } | |
2588 | ||
d4e0fe01 AD |
2589 | static const struct net_device_ops igbvf_netdev_ops = { |
2590 | .ndo_open = igbvf_open, | |
2591 | .ndo_stop = igbvf_close, | |
2592 | .ndo_start_xmit = igbvf_xmit_frame, | |
2593 | .ndo_get_stats = igbvf_get_stats, | |
afc4b13d | 2594 | .ndo_set_rx_mode = igbvf_set_multi, |
d4e0fe01 AD |
2595 | .ndo_set_mac_address = igbvf_set_mac, |
2596 | .ndo_change_mtu = igbvf_change_mtu, | |
2597 | .ndo_do_ioctl = igbvf_ioctl, | |
2598 | .ndo_tx_timeout = igbvf_tx_timeout, | |
d4e0fe01 AD |
2599 | .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid, |
2600 | .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid, | |
2601 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2602 | .ndo_poll_controller = igbvf_netpoll, | |
2603 | #endif | |
fd38f734 | 2604 | .ndo_set_features = igbvf_set_features, |
d4e0fe01 AD |
2605 | }; |
2606 | ||
2607 | /** | |
2608 | * igbvf_probe - Device Initialization Routine | |
2609 | * @pdev: PCI device information struct | |
2610 | * @ent: entry in igbvf_pci_tbl | |
2611 | * | |
2612 | * Returns 0 on success, negative on failure | |
2613 | * | |
2614 | * igbvf_probe initializes an adapter identified by a pci_dev structure. | |
2615 | * The OS initialization, configuring of the adapter private structure, | |
2616 | * and a hardware reset occur. | |
2617 | **/ | |
1dd06ae8 | 2618 | static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
d4e0fe01 AD |
2619 | { |
2620 | struct net_device *netdev; | |
2621 | struct igbvf_adapter *adapter; | |
2622 | struct e1000_hw *hw; | |
2623 | const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data]; | |
2624 | ||
2625 | static int cards_found; | |
2626 | int err, pci_using_dac; | |
2627 | ||
2628 | err = pci_enable_device_mem(pdev); | |
2629 | if (err) | |
2630 | return err; | |
2631 | ||
2632 | pci_using_dac = 0; | |
123e9f1a | 2633 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
d4e0fe01 | 2634 | if (!err) { |
123e9f1a | 2635 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
d4e0fe01 AD |
2636 | if (!err) |
2637 | pci_using_dac = 1; | |
2638 | } else { | |
123e9f1a | 2639 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
d4e0fe01 | 2640 | if (err) { |
123e9f1a NN |
2641 | err = dma_set_coherent_mask(&pdev->dev, |
2642 | DMA_BIT_MASK(32)); | |
d4e0fe01 AD |
2643 | if (err) { |
2644 | dev_err(&pdev->dev, "No usable DMA " | |
2645 | "configuration, aborting\n"); | |
2646 | goto err_dma; | |
2647 | } | |
2648 | } | |
2649 | } | |
2650 | ||
2651 | err = pci_request_regions(pdev, igbvf_driver_name); | |
2652 | if (err) | |
2653 | goto err_pci_reg; | |
2654 | ||
2655 | pci_set_master(pdev); | |
2656 | ||
2657 | err = -ENOMEM; | |
2658 | netdev = alloc_etherdev(sizeof(struct igbvf_adapter)); | |
2659 | if (!netdev) | |
2660 | goto err_alloc_etherdev; | |
2661 | ||
2662 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2663 | ||
2664 | pci_set_drvdata(pdev, netdev); | |
2665 | adapter = netdev_priv(netdev); | |
2666 | hw = &adapter->hw; | |
2667 | adapter->netdev = netdev; | |
2668 | adapter->pdev = pdev; | |
2669 | adapter->ei = ei; | |
2670 | adapter->pba = ei->pba; | |
2671 | adapter->flags = ei->flags; | |
2672 | adapter->hw.back = adapter; | |
2673 | adapter->hw.mac.type = ei->mac; | |
b3f4d599 | 2674 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
d4e0fe01 AD |
2675 | |
2676 | /* PCI config space info */ | |
2677 | ||
2678 | hw->vendor_id = pdev->vendor; | |
2679 | hw->device_id = pdev->device; | |
2680 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2681 | hw->subsystem_device_id = pdev->subsystem_device; | |
ff938e43 | 2682 | hw->revision_id = pdev->revision; |
d4e0fe01 AD |
2683 | |
2684 | err = -EIO; | |
2685 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2686 | pci_resource_len(pdev, 0)); | |
2687 | ||
2688 | if (!adapter->hw.hw_addr) | |
2689 | goto err_ioremap; | |
2690 | ||
2691 | if (ei->get_variants) { | |
2692 | err = ei->get_variants(adapter); | |
2693 | if (err) | |
2694 | goto err_ioremap; | |
2695 | } | |
2696 | ||
2697 | /* setup adapter struct */ | |
2698 | err = igbvf_sw_init(adapter); | |
2699 | if (err) | |
2700 | goto err_sw_init; | |
2701 | ||
2702 | /* construct the net_device struct */ | |
2703 | netdev->netdev_ops = &igbvf_netdev_ops; | |
2704 | ||
2705 | igbvf_set_ethtool_ops(netdev); | |
2706 | netdev->watchdog_timeo = 5 * HZ; | |
2707 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2708 | ||
2709 | adapter->bd_number = cards_found++; | |
2710 | ||
fd38f734 | 2711 | netdev->hw_features = NETIF_F_SG | |
d4e0fe01 | 2712 | NETIF_F_IP_CSUM | |
fd38f734 MM |
2713 | NETIF_F_IPV6_CSUM | |
2714 | NETIF_F_TSO | | |
2715 | NETIF_F_TSO6 | | |
2716 | NETIF_F_RXCSUM; | |
2717 | ||
2718 | netdev->features = netdev->hw_features | | |
d4e0fe01 AD |
2719 | NETIF_F_HW_VLAN_TX | |
2720 | NETIF_F_HW_VLAN_RX | | |
2721 | NETIF_F_HW_VLAN_FILTER; | |
2722 | ||
d4e0fe01 AD |
2723 | if (pci_using_dac) |
2724 | netdev->features |= NETIF_F_HIGHDMA; | |
2725 | ||
2726 | netdev->vlan_features |= NETIF_F_TSO; | |
2727 | netdev->vlan_features |= NETIF_F_TSO6; | |
2728 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
2729 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; | |
2730 | netdev->vlan_features |= NETIF_F_SG; | |
2731 | ||
2732 | /*reset the controller to put the device in a known good state */ | |
2733 | err = hw->mac.ops.reset_hw(hw); | |
2734 | if (err) { | |
2735 | dev_info(&pdev->dev, | |
8d56b6d5 | 2736 | "PF still in reset state. Is the PF interface up?\n"); |
d4e0fe01 AD |
2737 | } else { |
2738 | err = hw->mac.ops.read_mac_addr(hw); | |
8d56b6d5 MW |
2739 | if (err) |
2740 | dev_info(&pdev->dev, "Error reading MAC address.\n"); | |
2741 | else if (is_zero_ether_addr(adapter->hw.mac.addr)) | |
2742 | dev_info(&pdev->dev, "MAC address not assigned by administrator.\n"); | |
1a0d6ae5 | 2743 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, |
8d56b6d5 | 2744 | netdev->addr_len); |
d4e0fe01 AD |
2745 | } |
2746 | ||
9bd1be45 | 2747 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
8d56b6d5 MW |
2748 | dev_info(&pdev->dev, "Assigning random MAC address.\n"); |
2749 | eth_hw_addr_random(netdev); | |
2750 | memcpy(adapter->hw.mac.addr, netdev->dev_addr, | |
2751 | netdev->addr_len); | |
d4e0fe01 AD |
2752 | } |
2753 | ||
2754 | setup_timer(&adapter->watchdog_timer, &igbvf_watchdog, | |
2755 | (unsigned long) adapter); | |
2756 | ||
2757 | INIT_WORK(&adapter->reset_task, igbvf_reset_task); | |
2758 | INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task); | |
2759 | ||
2760 | /* ring size defaults */ | |
2761 | adapter->rx_ring->count = 1024; | |
2762 | adapter->tx_ring->count = 1024; | |
2763 | ||
2764 | /* reset the hardware with the new settings */ | |
2765 | igbvf_reset(adapter); | |
2766 | ||
2c1a1019 MW |
2767 | /* set hardware-specific flags */ |
2768 | if (adapter->hw.mac.type == e1000_vfadapt_i350) | |
2769 | adapter->flags |= IGBVF_FLAG_RX_LB_VLAN_BSWAP; | |
2770 | ||
d4e0fe01 AD |
2771 | strcpy(netdev->name, "eth%d"); |
2772 | err = register_netdev(netdev); | |
2773 | if (err) | |
2774 | goto err_hw_init; | |
2775 | ||
de7fe787 ET |
2776 | /* tell the stack to leave us alone until igbvf_open() is called */ |
2777 | netif_carrier_off(netdev); | |
2778 | netif_stop_queue(netdev); | |
2779 | ||
d4e0fe01 AD |
2780 | igbvf_print_device_info(adapter); |
2781 | ||
2782 | igbvf_initialize_last_counter_stats(adapter); | |
2783 | ||
2784 | return 0; | |
2785 | ||
2786 | err_hw_init: | |
2787 | kfree(adapter->tx_ring); | |
2788 | kfree(adapter->rx_ring); | |
2789 | err_sw_init: | |
2790 | igbvf_reset_interrupt_capability(adapter); | |
2791 | iounmap(adapter->hw.hw_addr); | |
2792 | err_ioremap: | |
2793 | free_netdev(netdev); | |
2794 | err_alloc_etherdev: | |
2795 | pci_release_regions(pdev); | |
2796 | err_pci_reg: | |
2797 | err_dma: | |
2798 | pci_disable_device(pdev); | |
2799 | return err; | |
2800 | } | |
2801 | ||
2802 | /** | |
2803 | * igbvf_remove - Device Removal Routine | |
2804 | * @pdev: PCI device information struct | |
2805 | * | |
2806 | * igbvf_remove is called by the PCI subsystem to alert the driver | |
2807 | * that it should release a PCI device. The could be caused by a | |
2808 | * Hot-Plug event, or because the driver is going to be removed from | |
2809 | * memory. | |
2810 | **/ | |
9f9a12f8 | 2811 | static void igbvf_remove(struct pci_dev *pdev) |
d4e0fe01 AD |
2812 | { |
2813 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2814 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2815 | struct e1000_hw *hw = &adapter->hw; | |
2816 | ||
2817 | /* | |
760141a5 TH |
2818 | * The watchdog timer may be rescheduled, so explicitly |
2819 | * disable it from being rescheduled. | |
d4e0fe01 AD |
2820 | */ |
2821 | set_bit(__IGBVF_DOWN, &adapter->state); | |
2822 | del_timer_sync(&adapter->watchdog_timer); | |
2823 | ||
760141a5 TH |
2824 | cancel_work_sync(&adapter->reset_task); |
2825 | cancel_work_sync(&adapter->watchdog_task); | |
d4e0fe01 AD |
2826 | |
2827 | unregister_netdev(netdev); | |
2828 | ||
2829 | igbvf_reset_interrupt_capability(adapter); | |
2830 | ||
2831 | /* | |
2832 | * it is important to delete the napi struct prior to freeing the | |
2833 | * rx ring so that you do not end up with null pointer refs | |
2834 | */ | |
2835 | netif_napi_del(&adapter->rx_ring->napi); | |
2836 | kfree(adapter->tx_ring); | |
2837 | kfree(adapter->rx_ring); | |
2838 | ||
2839 | iounmap(hw->hw_addr); | |
2840 | if (hw->flash_address) | |
2841 | iounmap(hw->flash_address); | |
2842 | pci_release_regions(pdev); | |
2843 | ||
2844 | free_netdev(netdev); | |
2845 | ||
2846 | pci_disable_device(pdev); | |
2847 | } | |
2848 | ||
2849 | /* PCI Error Recovery (ERS) */ | |
3646f0e5 | 2850 | static const struct pci_error_handlers igbvf_err_handler = { |
d4e0fe01 AD |
2851 | .error_detected = igbvf_io_error_detected, |
2852 | .slot_reset = igbvf_io_slot_reset, | |
2853 | .resume = igbvf_io_resume, | |
2854 | }; | |
2855 | ||
a3aa1884 | 2856 | static DEFINE_PCI_DEVICE_TABLE(igbvf_pci_tbl) = { |
d4e0fe01 | 2857 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf }, |
031d7952 | 2858 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf }, |
d4e0fe01 AD |
2859 | { } /* terminate list */ |
2860 | }; | |
2861 | MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl); | |
2862 | ||
2863 | /* PCI Device API Driver */ | |
2864 | static struct pci_driver igbvf_driver = { | |
2865 | .name = igbvf_driver_name, | |
2866 | .id_table = igbvf_pci_tbl, | |
2867 | .probe = igbvf_probe, | |
9f9a12f8 | 2868 | .remove = igbvf_remove, |
d4e0fe01 AD |
2869 | #ifdef CONFIG_PM |
2870 | /* Power Management Hooks */ | |
2871 | .suspend = igbvf_suspend, | |
2872 | .resume = igbvf_resume, | |
2873 | #endif | |
2874 | .shutdown = igbvf_shutdown, | |
2875 | .err_handler = &igbvf_err_handler | |
2876 | }; | |
2877 | ||
2878 | /** | |
2879 | * igbvf_init_module - Driver Registration Routine | |
2880 | * | |
2881 | * igbvf_init_module is the first routine called when the driver is | |
2882 | * loaded. All it does is register with the PCI subsystem. | |
2883 | **/ | |
2884 | static int __init igbvf_init_module(void) | |
2885 | { | |
2886 | int ret; | |
a4ba8cbe JK |
2887 | pr_info("%s - version %s\n", igbvf_driver_string, igbvf_driver_version); |
2888 | pr_info("%s\n", igbvf_copyright); | |
d4e0fe01 AD |
2889 | |
2890 | ret = pci_register_driver(&igbvf_driver); | |
d4e0fe01 AD |
2891 | |
2892 | return ret; | |
2893 | } | |
2894 | module_init(igbvf_init_module); | |
2895 | ||
2896 | /** | |
2897 | * igbvf_exit_module - Driver Exit Cleanup Routine | |
2898 | * | |
2899 | * igbvf_exit_module is called just before the driver is removed | |
2900 | * from memory. | |
2901 | **/ | |
2902 | static void __exit igbvf_exit_module(void) | |
2903 | { | |
2904 | pci_unregister_driver(&igbvf_driver); | |
d4e0fe01 AD |
2905 | } |
2906 | module_exit(igbvf_exit_module); | |
2907 | ||
2908 | ||
2909 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
10090751 | 2910 | MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver"); |
d4e0fe01 AD |
2911 | MODULE_LICENSE("GPL"); |
2912 | MODULE_VERSION(DRV_VERSION); | |
2913 | ||
2914 | /* netdev.c */ |