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1 | /******************************************************************************* |
2 | ||
3 | Intel PRO/1000 Linux driver | |
4 | Copyright(c) 1999 - 2007 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | Linux NICS <linux.nics@intel.com> | |
24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include <linux/module.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/pci.h> | |
33 | #include <linux/vmalloc.h> | |
34 | #include <linux/pagemap.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/netdevice.h> | |
37 | #include <linux/tcp.h> | |
38 | #include <linux/ipv6.h> | |
39 | #include <net/checksum.h> | |
40 | #include <net/ip6_checksum.h> | |
41 | #include <linux/mii.h> | |
42 | #include <linux/ethtool.h> | |
43 | #include <linux/if_vlan.h> | |
44 | #include <linux/cpu.h> | |
45 | #include <linux/smp.h> | |
46 | ||
47 | #include "e1000.h" | |
48 | ||
49 | #define DRV_VERSION "0.2.0" | |
50 | char e1000e_driver_name[] = "e1000e"; | |
51 | const char e1000e_driver_version[] = DRV_VERSION; | |
52 | ||
53 | static const struct e1000_info *e1000_info_tbl[] = { | |
54 | [board_82571] = &e1000_82571_info, | |
55 | [board_82572] = &e1000_82572_info, | |
56 | [board_82573] = &e1000_82573_info, | |
57 | [board_80003es2lan] = &e1000_es2_info, | |
58 | [board_ich8lan] = &e1000_ich8_info, | |
59 | [board_ich9lan] = &e1000_ich9_info, | |
60 | }; | |
61 | ||
62 | #ifdef DEBUG | |
63 | /** | |
64 | * e1000_get_hw_dev_name - return device name string | |
65 | * used by hardware layer to print debugging information | |
66 | **/ | |
67 | char *e1000e_get_hw_dev_name(struct e1000_hw *hw) | |
68 | { | |
69 | struct e1000_adapter *adapter = hw->back; | |
70 | struct net_device *netdev = adapter->netdev; | |
71 | return netdev->name; | |
72 | } | |
73 | #endif | |
74 | ||
75 | /** | |
76 | * e1000_desc_unused - calculate if we have unused descriptors | |
77 | **/ | |
78 | static int e1000_desc_unused(struct e1000_ring *ring) | |
79 | { | |
80 | if (ring->next_to_clean > ring->next_to_use) | |
81 | return ring->next_to_clean - ring->next_to_use - 1; | |
82 | ||
83 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
84 | } | |
85 | ||
86 | /** | |
87 | * e1000_receive_skb - helper function to handle rx indications | |
88 | * @adapter: board private structure | |
89 | * @status: descriptor status field as written by hardware | |
90 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
91 | * @skb: pointer to sk_buff to be indicated to stack | |
92 | **/ | |
93 | static void e1000_receive_skb(struct e1000_adapter *adapter, | |
94 | struct net_device *netdev, | |
95 | struct sk_buff *skb, | |
96 | u8 status, u16 vlan) | |
97 | { | |
98 | skb->protocol = eth_type_trans(skb, netdev); | |
99 | ||
100 | if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) | |
101 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
102 | le16_to_cpu(vlan) & | |
103 | E1000_RXD_SPC_VLAN_MASK); | |
104 | else | |
105 | netif_receive_skb(skb); | |
106 | ||
107 | netdev->last_rx = jiffies; | |
108 | } | |
109 | ||
110 | /** | |
111 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
112 | * @adapter: board private structure | |
113 | * @status_err: receive descriptor status and error fields | |
114 | * @csum: receive descriptor csum field | |
115 | * @sk_buff: socket buffer with received data | |
116 | **/ | |
117 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, | |
118 | u32 csum, struct sk_buff *skb) | |
119 | { | |
120 | u16 status = (u16)status_err; | |
121 | u8 errors = (u8)(status_err >> 24); | |
122 | skb->ip_summed = CHECKSUM_NONE; | |
123 | ||
124 | /* Ignore Checksum bit is set */ | |
125 | if (status & E1000_RXD_STAT_IXSM) | |
126 | return; | |
127 | /* TCP/UDP checksum error bit is set */ | |
128 | if (errors & E1000_RXD_ERR_TCPE) { | |
129 | /* let the stack verify checksum errors */ | |
130 | adapter->hw_csum_err++; | |
131 | return; | |
132 | } | |
133 | ||
134 | /* TCP/UDP Checksum has not been calculated */ | |
135 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
136 | return; | |
137 | ||
138 | /* It must be a TCP or UDP packet with a valid checksum */ | |
139 | if (status & E1000_RXD_STAT_TCPCS) { | |
140 | /* TCP checksum is good */ | |
141 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
142 | } else { | |
143 | /* IP fragment with UDP payload */ | |
144 | /* Hardware complements the payload checksum, so we undo it | |
145 | * and then put the value in host order for further stack use. | |
146 | */ | |
147 | csum = ntohl(csum ^ 0xFFFF); | |
148 | skb->csum = csum; | |
149 | skb->ip_summed = CHECKSUM_COMPLETE; | |
150 | } | |
151 | adapter->hw_csum_good++; | |
152 | } | |
153 | ||
154 | /** | |
155 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
156 | * @adapter: address of board private structure | |
157 | **/ | |
158 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, | |
159 | int cleaned_count) | |
160 | { | |
161 | struct net_device *netdev = adapter->netdev; | |
162 | struct pci_dev *pdev = adapter->pdev; | |
163 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
164 | struct e1000_rx_desc *rx_desc; | |
165 | struct e1000_buffer *buffer_info; | |
166 | struct sk_buff *skb; | |
167 | unsigned int i; | |
168 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
169 | ||
170 | i = rx_ring->next_to_use; | |
171 | buffer_info = &rx_ring->buffer_info[i]; | |
172 | ||
173 | while (cleaned_count--) { | |
174 | skb = buffer_info->skb; | |
175 | if (skb) { | |
176 | skb_trim(skb, 0); | |
177 | goto map_skb; | |
178 | } | |
179 | ||
180 | skb = netdev_alloc_skb(netdev, bufsz); | |
181 | if (!skb) { | |
182 | /* Better luck next round */ | |
183 | adapter->alloc_rx_buff_failed++; | |
184 | break; | |
185 | } | |
186 | ||
187 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
188 | * this will result in a 16 byte aligned IP header after | |
189 | * the 14 byte MAC header is removed | |
190 | */ | |
191 | skb_reserve(skb, NET_IP_ALIGN); | |
192 | ||
193 | buffer_info->skb = skb; | |
194 | map_skb: | |
195 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
196 | adapter->rx_buffer_len, | |
197 | PCI_DMA_FROMDEVICE); | |
198 | if (pci_dma_mapping_error(buffer_info->dma)) { | |
199 | dev_err(&pdev->dev, "RX DMA map failed\n"); | |
200 | adapter->rx_dma_failed++; | |
201 | break; | |
202 | } | |
203 | ||
204 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
205 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
206 | ||
207 | i++; | |
208 | if (i == rx_ring->count) | |
209 | i = 0; | |
210 | buffer_info = &rx_ring->buffer_info[i]; | |
211 | } | |
212 | ||
213 | if (rx_ring->next_to_use != i) { | |
214 | rx_ring->next_to_use = i; | |
215 | if (i-- == 0) | |
216 | i = (rx_ring->count - 1); | |
217 | ||
218 | /* Force memory writes to complete before letting h/w | |
219 | * know there are new descriptors to fetch. (Only | |
220 | * applicable for weak-ordered memory model archs, | |
221 | * such as IA-64). */ | |
222 | wmb(); | |
223 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
224 | } | |
225 | } | |
226 | ||
227 | /** | |
228 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
229 | * @adapter: address of board private structure | |
230 | **/ | |
231 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, | |
232 | int cleaned_count) | |
233 | { | |
234 | struct net_device *netdev = adapter->netdev; | |
235 | struct pci_dev *pdev = adapter->pdev; | |
236 | union e1000_rx_desc_packet_split *rx_desc; | |
237 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
238 | struct e1000_buffer *buffer_info; | |
239 | struct e1000_ps_page *ps_page; | |
240 | struct sk_buff *skb; | |
241 | unsigned int i, j; | |
242 | ||
243 | i = rx_ring->next_to_use; | |
244 | buffer_info = &rx_ring->buffer_info[i]; | |
245 | ||
246 | while (cleaned_count--) { | |
247 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
248 | ||
249 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
250 | ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) | |
251 | + j]; | |
252 | if (j < adapter->rx_ps_pages) { | |
253 | if (!ps_page->page) { | |
254 | ps_page->page = alloc_page(GFP_ATOMIC); | |
255 | if (!ps_page->page) { | |
256 | adapter->alloc_rx_buff_failed++; | |
257 | goto no_buffers; | |
258 | } | |
259 | ps_page->dma = pci_map_page(pdev, | |
260 | ps_page->page, | |
261 | 0, PAGE_SIZE, | |
262 | PCI_DMA_FROMDEVICE); | |
263 | if (pci_dma_mapping_error( | |
264 | ps_page->dma)) { | |
265 | dev_err(&adapter->pdev->dev, | |
266 | "RX DMA page map failed\n"); | |
267 | adapter->rx_dma_failed++; | |
268 | goto no_buffers; | |
269 | } | |
270 | } | |
271 | /* | |
272 | * Refresh the desc even if buffer_addrs | |
273 | * didn't change because each write-back | |
274 | * erases this info. | |
275 | */ | |
276 | rx_desc->read.buffer_addr[j+1] = | |
277 | cpu_to_le64(ps_page->dma); | |
278 | } else { | |
279 | rx_desc->read.buffer_addr[j+1] = ~0; | |
280 | } | |
281 | } | |
282 | ||
283 | skb = netdev_alloc_skb(netdev, | |
284 | adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
285 | ||
286 | if (!skb) { | |
287 | adapter->alloc_rx_buff_failed++; | |
288 | break; | |
289 | } | |
290 | ||
291 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
292 | * this will result in a 16 byte aligned IP header after | |
293 | * the 14 byte MAC header is removed | |
294 | */ | |
295 | skb_reserve(skb, NET_IP_ALIGN); | |
296 | ||
297 | buffer_info->skb = skb; | |
298 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
299 | adapter->rx_ps_bsize0, | |
300 | PCI_DMA_FROMDEVICE); | |
301 | if (pci_dma_mapping_error(buffer_info->dma)) { | |
302 | dev_err(&pdev->dev, "RX DMA map failed\n"); | |
303 | adapter->rx_dma_failed++; | |
304 | /* cleanup skb */ | |
305 | dev_kfree_skb_any(skb); | |
306 | buffer_info->skb = NULL; | |
307 | break; | |
308 | } | |
309 | ||
310 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
311 | ||
312 | i++; | |
313 | if (i == rx_ring->count) | |
314 | i = 0; | |
315 | buffer_info = &rx_ring->buffer_info[i]; | |
316 | } | |
317 | ||
318 | no_buffers: | |
319 | if (rx_ring->next_to_use != i) { | |
320 | rx_ring->next_to_use = i; | |
321 | ||
322 | if (!(i--)) | |
323 | i = (rx_ring->count - 1); | |
324 | ||
325 | /* Force memory writes to complete before letting h/w | |
326 | * know there are new descriptors to fetch. (Only | |
327 | * applicable for weak-ordered memory model archs, | |
328 | * such as IA-64). */ | |
329 | wmb(); | |
330 | /* Hardware increments by 16 bytes, but packet split | |
331 | * descriptors are 32 bytes...so we increment tail | |
332 | * twice as much. | |
333 | */ | |
334 | writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); | |
335 | } | |
336 | } | |
337 | ||
338 | /** | |
339 | * e1000_alloc_rx_buffers_jumbo - Replace used jumbo receive buffers | |
340 | * | |
341 | * @adapter: address of board private structure | |
342 | * @cleaned_count: number of buffers to allocate this pass | |
343 | **/ | |
344 | static void e1000_alloc_rx_buffers_jumbo(struct e1000_adapter *adapter, | |
345 | int cleaned_count) | |
346 | { | |
347 | struct net_device *netdev = adapter->netdev; | |
348 | struct pci_dev *pdev = adapter->pdev; | |
349 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
350 | struct e1000_rx_desc *rx_desc; | |
351 | struct e1000_buffer *buffer_info; | |
352 | struct sk_buff *skb; | |
353 | unsigned int i; | |
354 | unsigned int bufsz = 256 - | |
355 | 16 /*for skb_reserve */ - | |
356 | NET_IP_ALIGN; | |
357 | ||
358 | i = rx_ring->next_to_use; | |
359 | buffer_info = &rx_ring->buffer_info[i]; | |
360 | ||
361 | while (cleaned_count--) { | |
362 | skb = buffer_info->skb; | |
363 | if (skb) { | |
364 | skb_trim(skb, 0); | |
365 | goto check_page; | |
366 | } | |
367 | ||
368 | skb = netdev_alloc_skb(netdev, bufsz); | |
369 | if (!skb) { | |
370 | /* Better luck next round */ | |
371 | adapter->alloc_rx_buff_failed++; | |
372 | break; | |
373 | } | |
374 | ||
375 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
376 | * this will result in a 16 byte aligned IP header after | |
377 | * the 14 byte MAC header is removed | |
378 | */ | |
379 | skb_reserve(skb, NET_IP_ALIGN); | |
380 | ||
381 | buffer_info->skb = skb; | |
382 | check_page: | |
383 | /* allocate a new page if necessary */ | |
384 | if (!buffer_info->page) { | |
385 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
386 | if (!buffer_info->page) { | |
387 | adapter->alloc_rx_buff_failed++; | |
388 | break; | |
389 | } | |
390 | } | |
391 | ||
392 | if (!buffer_info->dma) | |
393 | buffer_info->dma = pci_map_page(pdev, | |
394 | buffer_info->page, 0, | |
395 | PAGE_SIZE, | |
396 | PCI_DMA_FROMDEVICE); | |
397 | if (pci_dma_mapping_error(buffer_info->dma)) { | |
398 | dev_err(&adapter->pdev->dev, "RX DMA page map failed\n"); | |
399 | adapter->rx_dma_failed++; | |
400 | break; | |
401 | } | |
402 | ||
403 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
404 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
405 | ||
406 | i++; | |
407 | if (i == rx_ring->count) | |
408 | i = 0; | |
409 | buffer_info = &rx_ring->buffer_info[i]; | |
410 | } | |
411 | ||
412 | if (rx_ring->next_to_use != i) { | |
413 | rx_ring->next_to_use = i; | |
414 | if (i-- == 0) | |
415 | i = (rx_ring->count - 1); | |
416 | ||
417 | /* Force memory writes to complete before letting h/w | |
418 | * know there are new descriptors to fetch. (Only | |
419 | * applicable for weak-ordered memory model archs, | |
420 | * such as IA-64). */ | |
421 | wmb(); | |
422 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
423 | } | |
424 | } | |
425 | ||
426 | /** | |
427 | * e1000_clean_rx_irq - Send received data up the network stack; legacy | |
428 | * @adapter: board private structure | |
429 | * | |
430 | * the return value indicates whether actual cleaning was done, there | |
431 | * is no guarantee that everything was cleaned | |
432 | **/ | |
433 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, | |
434 | int *work_done, int work_to_do) | |
435 | { | |
436 | struct net_device *netdev = adapter->netdev; | |
437 | struct pci_dev *pdev = adapter->pdev; | |
438 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
439 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
440 | struct e1000_buffer *buffer_info, *next_buffer; | |
441 | u32 length; | |
442 | unsigned int i; | |
443 | int cleaned_count = 0; | |
444 | bool cleaned = 0; | |
445 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
446 | ||
447 | i = rx_ring->next_to_clean; | |
448 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
449 | buffer_info = &rx_ring->buffer_info[i]; | |
450 | ||
451 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
452 | struct sk_buff *skb; | |
453 | u8 status; | |
454 | ||
455 | if (*work_done >= work_to_do) | |
456 | break; | |
457 | (*work_done)++; | |
458 | ||
459 | status = rx_desc->status; | |
460 | skb = buffer_info->skb; | |
461 | buffer_info->skb = NULL; | |
462 | ||
463 | prefetch(skb->data - NET_IP_ALIGN); | |
464 | ||
465 | i++; | |
466 | if (i == rx_ring->count) | |
467 | i = 0; | |
468 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
469 | prefetch(next_rxd); | |
470 | ||
471 | next_buffer = &rx_ring->buffer_info[i]; | |
472 | ||
473 | cleaned = 1; | |
474 | cleaned_count++; | |
475 | pci_unmap_single(pdev, | |
476 | buffer_info->dma, | |
477 | adapter->rx_buffer_len, | |
478 | PCI_DMA_FROMDEVICE); | |
479 | buffer_info->dma = 0; | |
480 | ||
481 | length = le16_to_cpu(rx_desc->length); | |
482 | ||
483 | /* !EOP means multiple descriptors were used to store a single | |
484 | * packet, also make sure the frame isn't just CRC only */ | |
485 | if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) { | |
486 | /* All receives must fit into a single buffer */ | |
487 | ndev_dbg(netdev, "%s: Receive packet consumed " | |
488 | "multiple buffers\n", netdev->name); | |
489 | /* recycle */ | |
490 | buffer_info->skb = skb; | |
491 | goto next_desc; | |
492 | } | |
493 | ||
494 | if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { | |
495 | /* recycle */ | |
496 | buffer_info->skb = skb; | |
497 | goto next_desc; | |
498 | } | |
499 | ||
500 | /* adjust length to remove Ethernet CRC */ | |
501 | length -= 4; | |
502 | ||
503 | /* probably a little skewed due to removing CRC */ | |
504 | total_rx_bytes += length; | |
505 | total_rx_packets++; | |
506 | ||
507 | /* code added for copybreak, this should improve | |
508 | * performance for small packets with large amounts | |
509 | * of reassembly being done in the stack */ | |
510 | if (length < copybreak) { | |
511 | struct sk_buff *new_skb = | |
512 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); | |
513 | if (new_skb) { | |
514 | skb_reserve(new_skb, NET_IP_ALIGN); | |
515 | memcpy(new_skb->data - NET_IP_ALIGN, | |
516 | skb->data - NET_IP_ALIGN, | |
517 | length + NET_IP_ALIGN); | |
518 | /* save the skb in buffer_info as good */ | |
519 | buffer_info->skb = skb; | |
520 | skb = new_skb; | |
521 | } | |
522 | /* else just continue with the old one */ | |
523 | } | |
524 | /* end copybreak code */ | |
525 | skb_put(skb, length); | |
526 | ||
527 | /* Receive Checksum Offload */ | |
528 | e1000_rx_checksum(adapter, | |
529 | (u32)(status) | | |
530 | ((u32)(rx_desc->errors) << 24), | |
531 | le16_to_cpu(rx_desc->csum), skb); | |
532 | ||
533 | e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); | |
534 | ||
535 | next_desc: | |
536 | rx_desc->status = 0; | |
537 | ||
538 | /* return some buffers to hardware, one at a time is too slow */ | |
539 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
540 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
541 | cleaned_count = 0; | |
542 | } | |
543 | ||
544 | /* use prefetched values */ | |
545 | rx_desc = next_rxd; | |
546 | buffer_info = next_buffer; | |
547 | } | |
548 | rx_ring->next_to_clean = i; | |
549 | ||
550 | cleaned_count = e1000_desc_unused(rx_ring); | |
551 | if (cleaned_count) | |
552 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
553 | ||
554 | adapter->total_rx_packets += total_rx_packets; | |
555 | adapter->total_rx_bytes += total_rx_bytes; | |
556 | return cleaned; | |
557 | } | |
558 | ||
559 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
560 | u16 length) | |
561 | { | |
562 | bi->page = NULL; | |
563 | skb->len += length; | |
564 | skb->data_len += length; | |
565 | skb->truesize += length; | |
566 | } | |
567 | ||
568 | static void e1000_put_txbuf(struct e1000_adapter *adapter, | |
569 | struct e1000_buffer *buffer_info) | |
570 | { | |
571 | if (buffer_info->dma) { | |
572 | pci_unmap_page(adapter->pdev, buffer_info->dma, | |
573 | buffer_info->length, PCI_DMA_TODEVICE); | |
574 | buffer_info->dma = 0; | |
575 | } | |
576 | if (buffer_info->skb) { | |
577 | dev_kfree_skb_any(buffer_info->skb); | |
578 | buffer_info->skb = NULL; | |
579 | } | |
580 | } | |
581 | ||
582 | static void e1000_print_tx_hang(struct e1000_adapter *adapter) | |
583 | { | |
584 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
585 | unsigned int i = tx_ring->next_to_clean; | |
586 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
587 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
588 | struct net_device *netdev = adapter->netdev; | |
589 | ||
590 | /* detected Tx unit hang */ | |
591 | ndev_err(netdev, | |
592 | "Detected Tx Unit Hang:\n" | |
593 | " TDH <%x>\n" | |
594 | " TDT <%x>\n" | |
595 | " next_to_use <%x>\n" | |
596 | " next_to_clean <%x>\n" | |
597 | "buffer_info[next_to_clean]:\n" | |
598 | " time_stamp <%lx>\n" | |
599 | " next_to_watch <%x>\n" | |
600 | " jiffies <%lx>\n" | |
601 | " next_to_watch.status <%x>\n", | |
602 | readl(adapter->hw.hw_addr + tx_ring->head), | |
603 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
604 | tx_ring->next_to_use, | |
605 | tx_ring->next_to_clean, | |
606 | tx_ring->buffer_info[eop].time_stamp, | |
607 | eop, | |
608 | jiffies, | |
609 | eop_desc->upper.fields.status); | |
610 | } | |
611 | ||
612 | /** | |
613 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
614 | * @adapter: board private structure | |
615 | * | |
616 | * the return value indicates whether actual cleaning was done, there | |
617 | * is no guarantee that everything was cleaned | |
618 | **/ | |
619 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
620 | { | |
621 | struct net_device *netdev = adapter->netdev; | |
622 | struct e1000_hw *hw = &adapter->hw; | |
623 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
624 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
625 | struct e1000_buffer *buffer_info; | |
626 | unsigned int i, eop; | |
627 | unsigned int count = 0; | |
628 | bool cleaned = 0; | |
629 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; | |
630 | ||
631 | i = tx_ring->next_to_clean; | |
632 | eop = tx_ring->buffer_info[i].next_to_watch; | |
633 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
634 | ||
635 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { | |
636 | for (cleaned = 0; !cleaned; ) { | |
637 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
638 | buffer_info = &tx_ring->buffer_info[i]; | |
639 | cleaned = (i == eop); | |
640 | ||
641 | if (cleaned) { | |
642 | struct sk_buff *skb = buffer_info->skb; | |
643 | unsigned int segs, bytecount; | |
644 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
645 | /* multiply data chunks by size of headers */ | |
646 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
647 | skb->len; | |
648 | total_tx_packets += segs; | |
649 | total_tx_bytes += bytecount; | |
650 | } | |
651 | ||
652 | e1000_put_txbuf(adapter, buffer_info); | |
653 | tx_desc->upper.data = 0; | |
654 | ||
655 | i++; | |
656 | if (i == tx_ring->count) | |
657 | i = 0; | |
658 | } | |
659 | ||
660 | eop = tx_ring->buffer_info[i].next_to_watch; | |
661 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
662 | #define E1000_TX_WEIGHT 64 | |
663 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
664 | if (count++ == E1000_TX_WEIGHT) | |
665 | break; | |
666 | } | |
667 | ||
668 | tx_ring->next_to_clean = i; | |
669 | ||
670 | #define TX_WAKE_THRESHOLD 32 | |
671 | if (cleaned && netif_carrier_ok(netdev) && | |
672 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
673 | /* Make sure that anybody stopping the queue after this | |
674 | * sees the new next_to_clean. | |
675 | */ | |
676 | smp_mb(); | |
677 | ||
678 | if (netif_queue_stopped(netdev) && | |
679 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
680 | netif_wake_queue(netdev); | |
681 | ++adapter->restart_queue; | |
682 | } | |
683 | } | |
684 | ||
685 | if (adapter->detect_tx_hung) { | |
686 | /* Detect a transmit hang in hardware, this serializes the | |
687 | * check with the clearing of time_stamp and movement of i */ | |
688 | adapter->detect_tx_hung = 0; | |
689 | if (tx_ring->buffer_info[eop].dma && | |
690 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp | |
691 | + (adapter->tx_timeout_factor * HZ)) | |
692 | && !(er32(STATUS) & | |
693 | E1000_STATUS_TXOFF)) { | |
694 | e1000_print_tx_hang(adapter); | |
695 | netif_stop_queue(netdev); | |
696 | } | |
697 | } | |
698 | adapter->total_tx_bytes += total_tx_bytes; | |
699 | adapter->total_tx_packets += total_tx_packets; | |
700 | return cleaned; | |
701 | } | |
702 | ||
703 | /** | |
704 | * e1000_clean_rx_irq_jumbo - Send received data up the network stack; legacy | |
705 | * @adapter: board private structure | |
706 | * | |
707 | * the return value indicates whether actual cleaning was done, there | |
708 | * is no guarantee that everything was cleaned | |
709 | **/ | |
710 | static bool e1000_clean_rx_irq_jumbo(struct e1000_adapter *adapter, | |
711 | int *work_done, int work_to_do) | |
712 | { | |
713 | struct net_device *netdev = adapter->netdev; | |
714 | struct pci_dev *pdev = adapter->pdev; | |
715 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
716 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
717 | struct e1000_buffer *buffer_info, *next_buffer; | |
718 | u32 length; | |
719 | unsigned int i; | |
720 | int cleaned_count = 0; | |
721 | bool cleaned = 0; | |
722 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
723 | ||
724 | i = rx_ring->next_to_clean; | |
725 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
726 | buffer_info = &rx_ring->buffer_info[i]; | |
727 | ||
728 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
729 | struct sk_buff *skb; | |
730 | u8 status; | |
731 | ||
732 | if (*work_done >= work_to_do) | |
733 | break; | |
734 | (*work_done)++; | |
735 | ||
736 | status = rx_desc->status; | |
737 | skb = buffer_info->skb; | |
738 | buffer_info->skb = NULL; | |
739 | ||
740 | i++; | |
741 | if (i == rx_ring->count) | |
742 | i = 0; | |
743 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
744 | prefetch(next_rxd); | |
745 | ||
746 | next_buffer = &rx_ring->buffer_info[i]; | |
747 | ||
748 | cleaned = 1; | |
749 | cleaned_count++; | |
750 | pci_unmap_page(pdev, | |
751 | buffer_info->dma, | |
752 | PAGE_SIZE, | |
753 | PCI_DMA_FROMDEVICE); | |
754 | buffer_info->dma = 0; | |
755 | ||
756 | length = le16_to_cpu(rx_desc->length); | |
757 | ||
758 | /* errors is only valid for DD + EOP descriptors */ | |
759 | if ((status & E1000_RXD_STAT_EOP) && | |
760 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { | |
761 | /* recycle both page and skb */ | |
762 | buffer_info->skb = skb; | |
763 | /* an error means any chain goes out the window too */ | |
764 | if (rx_ring->rx_skb_top) | |
765 | dev_kfree_skb(rx_ring->rx_skb_top); | |
766 | rx_ring->rx_skb_top = NULL; | |
767 | goto next_desc; | |
768 | } | |
769 | ||
770 | #define rxtop rx_ring->rx_skb_top | |
771 | if (!(status & E1000_RXD_STAT_EOP)) { | |
772 | /* this descriptor is only the beginning (or middle) */ | |
773 | if (!rxtop) { | |
774 | /* this is the beginning of a chain */ | |
775 | rxtop = skb; | |
776 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
777 | 0, length); | |
778 | } else { | |
779 | /* this is the middle of a chain */ | |
780 | skb_fill_page_desc(rxtop, | |
781 | skb_shinfo(rxtop)->nr_frags, | |
782 | buffer_info->page, 0, | |
783 | length); | |
784 | /* re-use the skb, only consumed the page */ | |
785 | buffer_info->skb = skb; | |
786 | } | |
787 | e1000_consume_page(buffer_info, rxtop, length); | |
788 | goto next_desc; | |
789 | } else { | |
790 | if (rxtop) { | |
791 | /* end of the chain */ | |
792 | skb_fill_page_desc(rxtop, | |
793 | skb_shinfo(rxtop)->nr_frags, | |
794 | buffer_info->page, 0, length); | |
795 | /* re-use the current skb, we only consumed the | |
796 | * page */ | |
797 | buffer_info->skb = skb; | |
798 | skb = rxtop; | |
799 | rxtop = NULL; | |
800 | e1000_consume_page(buffer_info, skb, length); | |
801 | } else { | |
802 | /* no chain, got EOP, this buf is the packet | |
803 | * copybreak to save the put_page/alloc_page */ | |
804 | if (length <= copybreak && | |
805 | skb_tailroom(skb) >= length) { | |
806 | u8 *vaddr; | |
807 | vaddr = kmap_atomic(buffer_info->page, | |
808 | KM_SKB_DATA_SOFTIRQ); | |
809 | memcpy(skb_tail_pointer(skb), | |
810 | vaddr, length); | |
811 | kunmap_atomic(vaddr, | |
812 | KM_SKB_DATA_SOFTIRQ); | |
813 | /* re-use the page, so don't erase | |
814 | * buffer_info->page */ | |
815 | skb_put(skb, length); | |
816 | } else { | |
817 | skb_fill_page_desc(skb, 0, | |
818 | buffer_info->page, 0, | |
819 | length); | |
820 | e1000_consume_page(buffer_info, skb, | |
821 | length); | |
822 | } | |
823 | } | |
824 | } | |
825 | ||
826 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
827 | e1000_rx_checksum(adapter, | |
828 | (u32)(status) | | |
829 | ((u32)(rx_desc->errors) << 24), | |
830 | le16_to_cpu(rx_desc->csum), skb); | |
831 | ||
832 | pskb_trim(skb, skb->len - 4); | |
833 | ||
834 | /* probably a little skewed due to removing CRC */ | |
835 | total_rx_bytes += skb->len; | |
836 | total_rx_packets++; | |
837 | ||
838 | /* eth type trans needs skb->data to point to something */ | |
839 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
840 | ndev_err(netdev, "__pskb_pull_tail failed.\n"); | |
841 | dev_kfree_skb(skb); | |
842 | goto next_desc; | |
843 | } | |
844 | ||
845 | e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); | |
846 | ||
847 | next_desc: | |
848 | rx_desc->status = 0; | |
849 | ||
850 | /* return some buffers to hardware, one at a time is too slow */ | |
851 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
852 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
853 | cleaned_count = 0; | |
854 | } | |
855 | ||
856 | /* use prefetched values */ | |
857 | rx_desc = next_rxd; | |
858 | buffer_info = next_buffer; | |
859 | } | |
860 | rx_ring->next_to_clean = i; | |
861 | ||
862 | cleaned_count = e1000_desc_unused(rx_ring); | |
863 | if (cleaned_count) | |
864 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
865 | ||
866 | adapter->total_rx_packets += total_rx_packets; | |
867 | adapter->total_rx_bytes += total_rx_bytes; | |
868 | return cleaned; | |
869 | } | |
870 | ||
871 | /** | |
872 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
873 | * @adapter: board private structure | |
874 | * | |
875 | * the return value indicates whether actual cleaning was done, there | |
876 | * is no guarantee that everything was cleaned | |
877 | **/ | |
878 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
879 | int *work_done, int work_to_do) | |
880 | { | |
881 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; | |
882 | struct net_device *netdev = adapter->netdev; | |
883 | struct pci_dev *pdev = adapter->pdev; | |
884 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
885 | struct e1000_buffer *buffer_info, *next_buffer; | |
886 | struct e1000_ps_page *ps_page; | |
887 | struct sk_buff *skb; | |
888 | unsigned int i, j; | |
889 | u32 length, staterr; | |
890 | int cleaned_count = 0; | |
891 | bool cleaned = 0; | |
892 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
893 | ||
894 | i = rx_ring->next_to_clean; | |
895 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
896 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
897 | buffer_info = &rx_ring->buffer_info[i]; | |
898 | ||
899 | while (staterr & E1000_RXD_STAT_DD) { | |
900 | if (*work_done >= work_to_do) | |
901 | break; | |
902 | (*work_done)++; | |
903 | skb = buffer_info->skb; | |
904 | ||
905 | /* in the packet split case this is header only */ | |
906 | prefetch(skb->data - NET_IP_ALIGN); | |
907 | ||
908 | i++; | |
909 | if (i == rx_ring->count) | |
910 | i = 0; | |
911 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
912 | prefetch(next_rxd); | |
913 | ||
914 | next_buffer = &rx_ring->buffer_info[i]; | |
915 | ||
916 | cleaned = 1; | |
917 | cleaned_count++; | |
918 | pci_unmap_single(pdev, buffer_info->dma, | |
919 | adapter->rx_ps_bsize0, | |
920 | PCI_DMA_FROMDEVICE); | |
921 | buffer_info->dma = 0; | |
922 | ||
923 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
924 | ndev_dbg(netdev, "%s: Packet Split buffers didn't pick " | |
925 | "up the full packet\n", netdev->name); | |
926 | dev_kfree_skb_irq(skb); | |
927 | goto next_desc; | |
928 | } | |
929 | ||
930 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
931 | dev_kfree_skb_irq(skb); | |
932 | goto next_desc; | |
933 | } | |
934 | ||
935 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
936 | ||
937 | if (!length) { | |
938 | ndev_dbg(netdev, "%s: Last part of the packet spanning" | |
939 | " multiple descriptors\n", netdev->name); | |
940 | dev_kfree_skb_irq(skb); | |
941 | goto next_desc; | |
942 | } | |
943 | ||
944 | /* Good Receive */ | |
945 | skb_put(skb, length); | |
946 | ||
947 | { | |
948 | /* this looks ugly, but it seems compiler issues make it | |
949 | more efficient than reusing j */ | |
950 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
951 | ||
952 | /* page alloc/put takes too long and effects small packet | |
953 | * throughput, so unsplit small packets and save the alloc/put*/ | |
954 | if (l1 && (l1 <= copybreak) && | |
955 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
956 | u8 *vaddr; | |
957 | ||
958 | ps_page = &rx_ring->ps_pages[i * PS_PAGE_BUFFERS]; | |
959 | ||
960 | /* there is no documentation about how to call | |
961 | * kmap_atomic, so we can't hold the mapping | |
962 | * very long */ | |
963 | pci_dma_sync_single_for_cpu(pdev, ps_page->dma, | |
964 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
965 | vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); | |
966 | memcpy(skb_tail_pointer(skb), vaddr, l1); | |
967 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
968 | pci_dma_sync_single_for_device(pdev, ps_page->dma, | |
969 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
970 | /* remove the CRC */ | |
971 | l1 -= 4; | |
972 | skb_put(skb, l1); | |
973 | goto copydone; | |
974 | } /* if */ | |
975 | } | |
976 | ||
977 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
978 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
979 | if (!length) | |
980 | break; | |
981 | ||
982 | ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) + j]; | |
983 | pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, | |
984 | PCI_DMA_FROMDEVICE); | |
985 | ps_page->dma = 0; | |
986 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
987 | ps_page->page = NULL; | |
988 | skb->len += length; | |
989 | skb->data_len += length; | |
990 | skb->truesize += length; | |
991 | } | |
992 | ||
993 | /* strip the ethernet crc, problem is we're using pages now so | |
994 | * this whole operation can get a little cpu intensive */ | |
995 | pskb_trim(skb, skb->len - 4); | |
996 | ||
997 | copydone: | |
998 | total_rx_bytes += skb->len; | |
999 | total_rx_packets++; | |
1000 | ||
1001 | e1000_rx_checksum(adapter, staterr, le16_to_cpu( | |
1002 | rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); | |
1003 | ||
1004 | if (rx_desc->wb.upper.header_status & | |
1005 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) | |
1006 | adapter->rx_hdr_split++; | |
1007 | ||
1008 | e1000_receive_skb(adapter, netdev, skb, | |
1009 | staterr, rx_desc->wb.middle.vlan); | |
1010 | ||
1011 | next_desc: | |
1012 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
1013 | buffer_info->skb = NULL; | |
1014 | ||
1015 | /* return some buffers to hardware, one at a time is too slow */ | |
1016 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
1017 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1018 | cleaned_count = 0; | |
1019 | } | |
1020 | ||
1021 | /* use prefetched values */ | |
1022 | rx_desc = next_rxd; | |
1023 | buffer_info = next_buffer; | |
1024 | ||
1025 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1026 | } | |
1027 | rx_ring->next_to_clean = i; | |
1028 | ||
1029 | cleaned_count = e1000_desc_unused(rx_ring); | |
1030 | if (cleaned_count) | |
1031 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1032 | ||
1033 | adapter->total_rx_packets += total_rx_packets; | |
1034 | adapter->total_rx_bytes += total_rx_bytes; | |
1035 | return cleaned; | |
1036 | } | |
1037 | ||
1038 | /** | |
1039 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1040 | * @adapter: board private structure | |
1041 | **/ | |
1042 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1043 | { | |
1044 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1045 | struct e1000_buffer *buffer_info; | |
1046 | struct e1000_ps_page *ps_page; | |
1047 | struct pci_dev *pdev = adapter->pdev; | |
1048 | unsigned long size; | |
1049 | unsigned int i, j; | |
1050 | ||
1051 | /* Free all the Rx ring sk_buffs */ | |
1052 | for (i = 0; i < rx_ring->count; i++) { | |
1053 | buffer_info = &rx_ring->buffer_info[i]; | |
1054 | if (buffer_info->dma) { | |
1055 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
1056 | pci_unmap_single(pdev, buffer_info->dma, | |
1057 | adapter->rx_buffer_len, | |
1058 | PCI_DMA_FROMDEVICE); | |
1059 | else if (adapter->clean_rx == e1000_clean_rx_irq_jumbo) | |
1060 | pci_unmap_page(pdev, buffer_info->dma, | |
1061 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
1062 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) | |
1063 | pci_unmap_single(pdev, buffer_info->dma, | |
1064 | adapter->rx_ps_bsize0, | |
1065 | PCI_DMA_FROMDEVICE); | |
1066 | buffer_info->dma = 0; | |
1067 | } | |
1068 | ||
1069 | if (buffer_info->page) { | |
1070 | put_page(buffer_info->page); | |
1071 | buffer_info->page = NULL; | |
1072 | } | |
1073 | ||
1074 | if (buffer_info->skb) { | |
1075 | dev_kfree_skb(buffer_info->skb); | |
1076 | buffer_info->skb = NULL; | |
1077 | } | |
1078 | ||
1079 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1080 | ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) | |
1081 | + j]; | |
1082 | if (!ps_page->page) | |
1083 | break; | |
1084 | pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, | |
1085 | PCI_DMA_FROMDEVICE); | |
1086 | ps_page->dma = 0; | |
1087 | put_page(ps_page->page); | |
1088 | ps_page->page = NULL; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* there also may be some cached data from a chained receive */ | |
1093 | if (rx_ring->rx_skb_top) { | |
1094 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1095 | rx_ring->rx_skb_top = NULL; | |
1096 | } | |
1097 | ||
1098 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1099 | memset(rx_ring->buffer_info, 0, size); | |
1100 | size = sizeof(struct e1000_ps_page) | |
1101 | * (rx_ring->count * PS_PAGE_BUFFERS); | |
1102 | memset(rx_ring->ps_pages, 0, size); | |
1103 | ||
1104 | /* Zero out the descriptor ring */ | |
1105 | memset(rx_ring->desc, 0, rx_ring->size); | |
1106 | ||
1107 | rx_ring->next_to_clean = 0; | |
1108 | rx_ring->next_to_use = 0; | |
1109 | ||
1110 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1111 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1112 | } | |
1113 | ||
1114 | /** | |
1115 | * e1000_intr_msi - Interrupt Handler | |
1116 | * @irq: interrupt number | |
1117 | * @data: pointer to a network interface device structure | |
1118 | **/ | |
1119 | static irqreturn_t e1000_intr_msi(int irq, void *data) | |
1120 | { | |
1121 | struct net_device *netdev = data; | |
1122 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1123 | struct e1000_hw *hw = &adapter->hw; | |
1124 | u32 icr = er32(ICR); | |
1125 | ||
1126 | /* read ICR disables interrupts using IAM, so keep up with our | |
1127 | * enable/disable accounting */ | |
1128 | atomic_inc(&adapter->irq_sem); | |
1129 | ||
1130 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { | |
1131 | hw->mac.get_link_status = 1; | |
1132 | /* ICH8 workaround-- Call gig speed drop workaround on cable | |
1133 | * disconnect (LSC) before accessing any PHY registers */ | |
1134 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && | |
1135 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
1136 | e1000e_gig_downshift_workaround_ich8lan(hw); | |
1137 | ||
1138 | /* 80003ES2LAN workaround-- For packet buffer work-around on | |
1139 | * link down event; disable receives here in the ISR and reset | |
1140 | * adapter in watchdog */ | |
1141 | if (netif_carrier_ok(netdev) && | |
1142 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1143 | /* disable receives */ | |
1144 | u32 rctl = er32(RCTL); | |
1145 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1146 | } | |
1147 | /* guard against interrupt when we're going down */ | |
1148 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1149 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1150 | } | |
1151 | ||
1152 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
1153 | adapter->total_tx_bytes = 0; | |
1154 | adapter->total_tx_packets = 0; | |
1155 | adapter->total_rx_bytes = 0; | |
1156 | adapter->total_rx_packets = 0; | |
1157 | __netif_rx_schedule(netdev, &adapter->napi); | |
1158 | } else { | |
1159 | atomic_dec(&adapter->irq_sem); | |
1160 | } | |
1161 | ||
1162 | return IRQ_HANDLED; | |
1163 | } | |
1164 | ||
1165 | /** | |
1166 | * e1000_intr - Interrupt Handler | |
1167 | * @irq: interrupt number | |
1168 | * @data: pointer to a network interface device structure | |
1169 | **/ | |
1170 | static irqreturn_t e1000_intr(int irq, void *data) | |
1171 | { | |
1172 | struct net_device *netdev = data; | |
1173 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1174 | struct e1000_hw *hw = &adapter->hw; | |
1175 | ||
1176 | u32 rctl, icr = er32(ICR); | |
1177 | if (!icr) | |
1178 | return IRQ_NONE; /* Not our interrupt */ | |
1179 | ||
1180 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
1181 | * not set, then the adapter didn't send an interrupt */ | |
1182 | if (!(icr & E1000_ICR_INT_ASSERTED)) | |
1183 | return IRQ_NONE; | |
1184 | ||
1185 | /* Interrupt Auto-Mask...upon reading ICR, | |
1186 | * interrupts are masked. No need for the | |
1187 | * IMC write, but it does mean we should | |
1188 | * account for it ASAP. */ | |
1189 | atomic_inc(&adapter->irq_sem); | |
1190 | ||
1191 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { | |
1192 | hw->mac.get_link_status = 1; | |
1193 | /* ICH8 workaround-- Call gig speed drop workaround on cable | |
1194 | * disconnect (LSC) before accessing any PHY registers */ | |
1195 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && | |
1196 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
1197 | e1000e_gig_downshift_workaround_ich8lan(hw); | |
1198 | ||
1199 | /* 80003ES2LAN workaround-- | |
1200 | * For packet buffer work-around on link down event; | |
1201 | * disable receives here in the ISR and | |
1202 | * reset adapter in watchdog | |
1203 | */ | |
1204 | if (netif_carrier_ok(netdev) && | |
1205 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1206 | /* disable receives */ | |
1207 | rctl = er32(RCTL); | |
1208 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1209 | } | |
1210 | /* guard against interrupt when we're going down */ | |
1211 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1212 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1213 | } | |
1214 | ||
1215 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
1216 | adapter->total_tx_bytes = 0; | |
1217 | adapter->total_tx_packets = 0; | |
1218 | adapter->total_rx_bytes = 0; | |
1219 | adapter->total_rx_packets = 0; | |
1220 | __netif_rx_schedule(netdev, &adapter->napi); | |
1221 | } else { | |
1222 | atomic_dec(&adapter->irq_sem); | |
1223 | } | |
1224 | ||
1225 | return IRQ_HANDLED; | |
1226 | } | |
1227 | ||
1228 | static int e1000_request_irq(struct e1000_adapter *adapter) | |
1229 | { | |
1230 | struct net_device *netdev = adapter->netdev; | |
1231 | void (*handler) = &e1000_intr; | |
1232 | int irq_flags = IRQF_SHARED; | |
1233 | int err; | |
1234 | ||
1235 | err = pci_enable_msi(adapter->pdev); | |
1236 | if (err) { | |
1237 | ndev_warn(netdev, | |
1238 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
1239 | } else { | |
1240 | adapter->flags |= FLAG_MSI_ENABLED; | |
1241 | handler = &e1000_intr_msi; | |
1242 | irq_flags = 0; | |
1243 | } | |
1244 | ||
1245 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, | |
1246 | netdev); | |
1247 | if (err) { | |
1248 | if (adapter->flags & FLAG_MSI_ENABLED) | |
1249 | pci_disable_msi(adapter->pdev); | |
1250 | ndev_err(netdev, | |
1251 | "Unable to allocate interrupt Error: %d\n", err); | |
1252 | } | |
1253 | ||
1254 | return err; | |
1255 | } | |
1256 | ||
1257 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
1258 | { | |
1259 | struct net_device *netdev = adapter->netdev; | |
1260 | ||
1261 | free_irq(adapter->pdev->irq, netdev); | |
1262 | if (adapter->flags & FLAG_MSI_ENABLED) { | |
1263 | pci_disable_msi(adapter->pdev); | |
1264 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | /** | |
1269 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
1270 | **/ | |
1271 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
1272 | { | |
1273 | struct e1000_hw *hw = &adapter->hw; | |
1274 | ||
1275 | atomic_inc(&adapter->irq_sem); | |
1276 | ew32(IMC, ~0); | |
1277 | e1e_flush(); | |
1278 | synchronize_irq(adapter->pdev->irq); | |
1279 | } | |
1280 | ||
1281 | /** | |
1282 | * e1000_irq_enable - Enable default interrupt generation settings | |
1283 | **/ | |
1284 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
1285 | { | |
1286 | struct e1000_hw *hw = &adapter->hw; | |
1287 | ||
1288 | if (atomic_dec_and_test(&adapter->irq_sem)) { | |
1289 | ew32(IMS, IMS_ENABLE_MASK); | |
1290 | e1e_flush(); | |
1291 | } | |
1292 | } | |
1293 | ||
1294 | /** | |
1295 | * e1000_get_hw_control - get control of the h/w from f/w | |
1296 | * @adapter: address of board private structure | |
1297 | * | |
1298 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
1299 | * For ASF and Pass Through versions of f/w this means that | |
1300 | * the driver is loaded. For AMT version (only with 82573) | |
1301 | * of the f/w this means that the network i/f is open. | |
1302 | **/ | |
1303 | static void e1000_get_hw_control(struct e1000_adapter *adapter) | |
1304 | { | |
1305 | struct e1000_hw *hw = &adapter->hw; | |
1306 | u32 ctrl_ext; | |
1307 | u32 swsm; | |
1308 | ||
1309 | /* Let firmware know the driver has taken over */ | |
1310 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1311 | swsm = er32(SWSM); | |
1312 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
1313 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1314 | ctrl_ext = er32(CTRL_EXT); | |
1315 | ew32(CTRL_EXT, | |
1316 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | /** | |
1321 | * e1000_release_hw_control - release control of the h/w to f/w | |
1322 | * @adapter: address of board private structure | |
1323 | * | |
1324 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
1325 | * For ASF and Pass Through versions of f/w this means that the | |
1326 | * driver is no longer loaded. For AMT version (only with 82573) i | |
1327 | * of the f/w this means that the network i/f is closed. | |
1328 | * | |
1329 | **/ | |
1330 | static void e1000_release_hw_control(struct e1000_adapter *adapter) | |
1331 | { | |
1332 | struct e1000_hw *hw = &adapter->hw; | |
1333 | u32 ctrl_ext; | |
1334 | u32 swsm; | |
1335 | ||
1336 | /* Let firmware taken over control of h/w */ | |
1337 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1338 | swsm = er32(SWSM); | |
1339 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
1340 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1341 | ctrl_ext = er32(CTRL_EXT); | |
1342 | ew32(CTRL_EXT, | |
1343 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | static void e1000_release_manageability(struct e1000_adapter *adapter) | |
1348 | { | |
1349 | if (adapter->flags & FLAG_MNG_PT_ENABLED) { | |
1350 | struct e1000_hw *hw = &adapter->hw; | |
1351 | ||
1352 | u32 manc = er32(MANC); | |
1353 | ||
1354 | /* re-enable hardware interception of ARP */ | |
1355 | manc |= E1000_MANC_ARP_EN; | |
1356 | manc &= ~E1000_MANC_EN_MNG2HOST; | |
1357 | ||
1358 | /* don't explicitly have to mess with MANC2H since | |
1359 | * MANC has an enable disable that gates MANC2H */ | |
1360 | ew32(MANC, manc); | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | /** | |
1365 | * @e1000_alloc_ring - allocate memory for a ring structure | |
1366 | **/ | |
1367 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
1368 | struct e1000_ring *ring) | |
1369 | { | |
1370 | struct pci_dev *pdev = adapter->pdev; | |
1371 | ||
1372 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
1373 | GFP_KERNEL); | |
1374 | if (!ring->desc) | |
1375 | return -ENOMEM; | |
1376 | ||
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | /** | |
1381 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
1382 | * @adapter: board private structure | |
1383 | * | |
1384 | * Return 0 on success, negative on failure | |
1385 | **/ | |
1386 | int e1000e_setup_tx_resources(struct e1000_adapter *adapter) | |
1387 | { | |
1388 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1389 | int err = -ENOMEM, size; | |
1390 | ||
1391 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1392 | tx_ring->buffer_info = vmalloc(size); | |
1393 | if (!tx_ring->buffer_info) | |
1394 | goto err; | |
1395 | memset(tx_ring->buffer_info, 0, size); | |
1396 | ||
1397 | /* round up to nearest 4K */ | |
1398 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
1399 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
1400 | ||
1401 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
1402 | if (err) | |
1403 | goto err; | |
1404 | ||
1405 | tx_ring->next_to_use = 0; | |
1406 | tx_ring->next_to_clean = 0; | |
1407 | spin_lock_init(&adapter->tx_queue_lock); | |
1408 | ||
1409 | return 0; | |
1410 | err: | |
1411 | vfree(tx_ring->buffer_info); | |
1412 | ndev_err(adapter->netdev, | |
1413 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1414 | return err; | |
1415 | } | |
1416 | ||
1417 | /** | |
1418 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
1419 | * @adapter: board private structure | |
1420 | * | |
1421 | * Returns 0 on success, negative on failure | |
1422 | **/ | |
1423 | int e1000e_setup_rx_resources(struct e1000_adapter *adapter) | |
1424 | { | |
1425 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1426 | int size, desc_len, err = -ENOMEM; | |
1427 | ||
1428 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1429 | rx_ring->buffer_info = vmalloc(size); | |
1430 | if (!rx_ring->buffer_info) | |
1431 | goto err; | |
1432 | memset(rx_ring->buffer_info, 0, size); | |
1433 | ||
1434 | rx_ring->ps_pages = kcalloc(rx_ring->count * PS_PAGE_BUFFERS, | |
1435 | sizeof(struct e1000_ps_page), | |
1436 | GFP_KERNEL); | |
1437 | if (!rx_ring->ps_pages) | |
1438 | goto err; | |
1439 | ||
1440 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1441 | ||
1442 | /* Round up to nearest 4K */ | |
1443 | rx_ring->size = rx_ring->count * desc_len; | |
1444 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
1445 | ||
1446 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
1447 | if (err) | |
1448 | goto err; | |
1449 | ||
1450 | rx_ring->next_to_clean = 0; | |
1451 | rx_ring->next_to_use = 0; | |
1452 | rx_ring->rx_skb_top = NULL; | |
1453 | ||
1454 | return 0; | |
1455 | err: | |
1456 | vfree(rx_ring->buffer_info); | |
1457 | kfree(rx_ring->ps_pages); | |
1458 | ndev_err(adapter->netdev, | |
1459 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1460 | return err; | |
1461 | } | |
1462 | ||
1463 | /** | |
1464 | * e1000_clean_tx_ring - Free Tx Buffers | |
1465 | * @adapter: board private structure | |
1466 | **/ | |
1467 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
1468 | { | |
1469 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1470 | struct e1000_buffer *buffer_info; | |
1471 | unsigned long size; | |
1472 | unsigned int i; | |
1473 | ||
1474 | for (i = 0; i < tx_ring->count; i++) { | |
1475 | buffer_info = &tx_ring->buffer_info[i]; | |
1476 | e1000_put_txbuf(adapter, buffer_info); | |
1477 | } | |
1478 | ||
1479 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1480 | memset(tx_ring->buffer_info, 0, size); | |
1481 | ||
1482 | memset(tx_ring->desc, 0, tx_ring->size); | |
1483 | ||
1484 | tx_ring->next_to_use = 0; | |
1485 | tx_ring->next_to_clean = 0; | |
1486 | ||
1487 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1488 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1489 | } | |
1490 | ||
1491 | /** | |
1492 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
1493 | * @adapter: board private structure | |
1494 | * | |
1495 | * Free all transmit software resources | |
1496 | **/ | |
1497 | void e1000e_free_tx_resources(struct e1000_adapter *adapter) | |
1498 | { | |
1499 | struct pci_dev *pdev = adapter->pdev; | |
1500 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1501 | ||
1502 | e1000_clean_tx_ring(adapter); | |
1503 | ||
1504 | vfree(tx_ring->buffer_info); | |
1505 | tx_ring->buffer_info = NULL; | |
1506 | ||
1507 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
1508 | tx_ring->dma); | |
1509 | tx_ring->desc = NULL; | |
1510 | } | |
1511 | ||
1512 | /** | |
1513 | * e1000e_free_rx_resources - Free Rx Resources | |
1514 | * @adapter: board private structure | |
1515 | * | |
1516 | * Free all receive software resources | |
1517 | **/ | |
1518 | ||
1519 | void e1000e_free_rx_resources(struct e1000_adapter *adapter) | |
1520 | { | |
1521 | struct pci_dev *pdev = adapter->pdev; | |
1522 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1523 | ||
1524 | e1000_clean_rx_ring(adapter); | |
1525 | ||
1526 | vfree(rx_ring->buffer_info); | |
1527 | rx_ring->buffer_info = NULL; | |
1528 | ||
1529 | kfree(rx_ring->ps_pages); | |
1530 | rx_ring->ps_pages = NULL; | |
1531 | ||
1532 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
1533 | rx_ring->dma); | |
1534 | rx_ring->desc = NULL; | |
1535 | } | |
1536 | ||
1537 | /** | |
1538 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
1539 | * Stores a new ITR value based on packets and byte | |
1540 | * counts during the last interrupt. The advantage of per interrupt | |
1541 | * computation is faster updates and more accurate ITR for the current | |
1542 | * traffic pattern. Constants in this function were computed | |
1543 | * based on theoretical maximum wire speed and thresholds were set based | |
1544 | * on testing data as well as attempting to minimize response time | |
1545 | * while increasing bulk throughput. | |
1546 | * this functionality is controlled by the InterruptThrottleRate module | |
1547 | * parameter (see e1000_param.c) | |
1548 | * @adapter: pointer to adapter | |
1549 | * @itr_setting: current adapter->itr | |
1550 | * @packets: the number of packets during this measurement interval | |
1551 | * @bytes: the number of bytes during this measurement interval | |
1552 | **/ | |
1553 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
1554 | u16 itr_setting, int packets, | |
1555 | int bytes) | |
1556 | { | |
1557 | unsigned int retval = itr_setting; | |
1558 | ||
1559 | if (packets == 0) | |
1560 | goto update_itr_done; | |
1561 | ||
1562 | switch (itr_setting) { | |
1563 | case lowest_latency: | |
1564 | /* handle TSO and jumbo frames */ | |
1565 | if (bytes/packets > 8000) | |
1566 | retval = bulk_latency; | |
1567 | else if ((packets < 5) && (bytes > 512)) { | |
1568 | retval = low_latency; | |
1569 | } | |
1570 | break; | |
1571 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
1572 | if (bytes > 10000) { | |
1573 | /* this if handles the TSO accounting */ | |
1574 | if (bytes/packets > 8000) { | |
1575 | retval = bulk_latency; | |
1576 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
1577 | retval = bulk_latency; | |
1578 | } else if ((packets > 35)) { | |
1579 | retval = lowest_latency; | |
1580 | } | |
1581 | } else if (bytes/packets > 2000) { | |
1582 | retval = bulk_latency; | |
1583 | } else if (packets <= 2 && bytes < 512) { | |
1584 | retval = lowest_latency; | |
1585 | } | |
1586 | break; | |
1587 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
1588 | if (bytes > 25000) { | |
1589 | if (packets > 35) { | |
1590 | retval = low_latency; | |
1591 | } | |
1592 | } else if (bytes < 6000) { | |
1593 | retval = low_latency; | |
1594 | } | |
1595 | break; | |
1596 | } | |
1597 | ||
1598 | update_itr_done: | |
1599 | return retval; | |
1600 | } | |
1601 | ||
1602 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
1603 | { | |
1604 | struct e1000_hw *hw = &adapter->hw; | |
1605 | u16 current_itr; | |
1606 | u32 new_itr = adapter->itr; | |
1607 | ||
1608 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
1609 | if (adapter->link_speed != SPEED_1000) { | |
1610 | current_itr = 0; | |
1611 | new_itr = 4000; | |
1612 | goto set_itr_now; | |
1613 | } | |
1614 | ||
1615 | adapter->tx_itr = e1000_update_itr(adapter, | |
1616 | adapter->tx_itr, | |
1617 | adapter->total_tx_packets, | |
1618 | adapter->total_tx_bytes); | |
1619 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
1620 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
1621 | adapter->tx_itr = low_latency; | |
1622 | ||
1623 | adapter->rx_itr = e1000_update_itr(adapter, | |
1624 | adapter->rx_itr, | |
1625 | adapter->total_rx_packets, | |
1626 | adapter->total_rx_bytes); | |
1627 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
1628 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
1629 | adapter->rx_itr = low_latency; | |
1630 | ||
1631 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
1632 | ||
1633 | switch (current_itr) { | |
1634 | /* counts and packets in update_itr are dependent on these numbers */ | |
1635 | case lowest_latency: | |
1636 | new_itr = 70000; | |
1637 | break; | |
1638 | case low_latency: | |
1639 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1640 | break; | |
1641 | case bulk_latency: | |
1642 | new_itr = 4000; | |
1643 | break; | |
1644 | default: | |
1645 | break; | |
1646 | } | |
1647 | ||
1648 | set_itr_now: | |
1649 | if (new_itr != adapter->itr) { | |
1650 | /* this attempts to bias the interrupt rate towards Bulk | |
1651 | * by adding intermediate steps when interrupt rate is | |
1652 | * increasing */ | |
1653 | new_itr = new_itr > adapter->itr ? | |
1654 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
1655 | new_itr; | |
1656 | adapter->itr = new_itr; | |
1657 | ew32(ITR, 1000000000 / (new_itr * 256)); | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | /** | |
1662 | * e1000_clean - NAPI Rx polling callback | |
1663 | * @adapter: board private structure | |
1664 | **/ | |
1665 | static int e1000_clean(struct napi_struct *napi, int budget) | |
1666 | { | |
1667 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); | |
1668 | struct net_device *poll_dev = adapter->netdev; | |
1669 | int tx_cleaned = 0, work_done = 0; | |
1670 | ||
1671 | /* Must NOT use netdev_priv macro here. */ | |
1672 | adapter = poll_dev->priv; | |
1673 | ||
1674 | /* Keep link state information with original netdev */ | |
1675 | if (!netif_carrier_ok(poll_dev)) | |
1676 | goto quit_polling; | |
1677 | ||
1678 | /* e1000_clean is called per-cpu. This lock protects | |
1679 | * tx_ring from being cleaned by multiple cpus | |
1680 | * simultaneously. A failure obtaining the lock means | |
1681 | * tx_ring is currently being cleaned anyway. */ | |
1682 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
1683 | tx_cleaned = e1000_clean_tx_irq(adapter); | |
1684 | spin_unlock(&adapter->tx_queue_lock); | |
1685 | } | |
1686 | ||
1687 | adapter->clean_rx(adapter, &work_done, budget); | |
1688 | ||
1689 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
1690 | if ((!tx_cleaned && (work_done < budget)) || | |
1691 | !netif_running(poll_dev)) { | |
1692 | quit_polling: | |
1693 | if (adapter->itr_setting & 3) | |
1694 | e1000_set_itr(adapter); | |
1695 | netif_rx_complete(poll_dev, napi); | |
1696 | e1000_irq_enable(adapter); | |
1697 | } | |
1698 | ||
1699 | return work_done; | |
1700 | } | |
1701 | ||
1702 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1703 | { | |
1704 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1705 | struct e1000_hw *hw = &adapter->hw; | |
1706 | u32 vfta, index; | |
1707 | ||
1708 | /* don't update vlan cookie if already programmed */ | |
1709 | if ((adapter->hw.mng_cookie.status & | |
1710 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
1711 | (vid == adapter->mng_vlan_id)) | |
1712 | return; | |
1713 | /* add VID to filter table */ | |
1714 | index = (vid >> 5) & 0x7F; | |
1715 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
1716 | vfta |= (1 << (vid & 0x1F)); | |
1717 | e1000e_write_vfta(hw, index, vfta); | |
1718 | } | |
1719 | ||
1720 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1721 | { | |
1722 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1723 | struct e1000_hw *hw = &adapter->hw; | |
1724 | u32 vfta, index; | |
1725 | ||
1726 | e1000_irq_disable(adapter); | |
1727 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1728 | e1000_irq_enable(adapter); | |
1729 | ||
1730 | if ((adapter->hw.mng_cookie.status & | |
1731 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
1732 | (vid == adapter->mng_vlan_id)) { | |
1733 | /* release control to f/w */ | |
1734 | e1000_release_hw_control(adapter); | |
1735 | return; | |
1736 | } | |
1737 | ||
1738 | /* remove VID from filter table */ | |
1739 | index = (vid >> 5) & 0x7F; | |
1740 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
1741 | vfta &= ~(1 << (vid & 0x1F)); | |
1742 | e1000e_write_vfta(hw, index, vfta); | |
1743 | } | |
1744 | ||
1745 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
1746 | { | |
1747 | struct net_device *netdev = adapter->netdev; | |
1748 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
1749 | u16 old_vid = adapter->mng_vlan_id; | |
1750 | ||
1751 | if (!adapter->vlgrp) | |
1752 | return; | |
1753 | ||
1754 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
1755 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
1756 | if (adapter->hw.mng_cookie.status & | |
1757 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
1758 | e1000_vlan_rx_add_vid(netdev, vid); | |
1759 | adapter->mng_vlan_id = vid; | |
1760 | } | |
1761 | ||
1762 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
1763 | (vid != old_vid) && | |
1764 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
1765 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
1766 | } else { | |
1767 | adapter->mng_vlan_id = vid; | |
1768 | } | |
1769 | } | |
1770 | ||
1771 | ||
1772 | static void e1000_vlan_rx_register(struct net_device *netdev, | |
1773 | struct vlan_group *grp) | |
1774 | { | |
1775 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1776 | struct e1000_hw *hw = &adapter->hw; | |
1777 | u32 ctrl, rctl; | |
1778 | ||
1779 | e1000_irq_disable(adapter); | |
1780 | adapter->vlgrp = grp; | |
1781 | ||
1782 | if (grp) { | |
1783 | /* enable VLAN tag insert/strip */ | |
1784 | ctrl = er32(CTRL); | |
1785 | ctrl |= E1000_CTRL_VME; | |
1786 | ew32(CTRL, ctrl); | |
1787 | ||
1788 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
1789 | /* enable VLAN receive filtering */ | |
1790 | rctl = er32(RCTL); | |
1791 | rctl |= E1000_RCTL_VFE; | |
1792 | rctl &= ~E1000_RCTL_CFIEN; | |
1793 | ew32(RCTL, rctl); | |
1794 | e1000_update_mng_vlan(adapter); | |
1795 | } | |
1796 | } else { | |
1797 | /* disable VLAN tag insert/strip */ | |
1798 | ctrl = er32(CTRL); | |
1799 | ctrl &= ~E1000_CTRL_VME; | |
1800 | ew32(CTRL, ctrl); | |
1801 | ||
1802 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
1803 | /* disable VLAN filtering */ | |
1804 | rctl = er32(RCTL); | |
1805 | rctl &= ~E1000_RCTL_VFE; | |
1806 | ew32(RCTL, rctl); | |
1807 | if (adapter->mng_vlan_id != | |
1808 | (u16)E1000_MNG_VLAN_NONE) { | |
1809 | e1000_vlan_rx_kill_vid(netdev, | |
1810 | adapter->mng_vlan_id); | |
1811 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
1812 | } | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | e1000_irq_enable(adapter); | |
1817 | } | |
1818 | ||
1819 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
1820 | { | |
1821 | u16 vid; | |
1822 | ||
1823 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1824 | ||
1825 | if (!adapter->vlgrp) | |
1826 | return; | |
1827 | ||
1828 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1829 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1830 | continue; | |
1831 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
1832 | } | |
1833 | } | |
1834 | ||
1835 | static void e1000_init_manageability(struct e1000_adapter *adapter) | |
1836 | { | |
1837 | struct e1000_hw *hw = &adapter->hw; | |
1838 | u32 manc, manc2h; | |
1839 | ||
1840 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
1841 | return; | |
1842 | ||
1843 | manc = er32(MANC); | |
1844 | ||
1845 | /* disable hardware interception of ARP */ | |
1846 | manc &= ~(E1000_MANC_ARP_EN); | |
1847 | ||
1848 | /* enable receiving management packets to the host. this will probably | |
1849 | * generate destination unreachable messages from the host OS, but | |
1850 | * the packets will be handled on SMBUS */ | |
1851 | manc |= E1000_MANC_EN_MNG2HOST; | |
1852 | manc2h = er32(MANC2H); | |
1853 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
1854 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
1855 | manc2h |= E1000_MNG2HOST_PORT_623; | |
1856 | manc2h |= E1000_MNG2HOST_PORT_664; | |
1857 | ew32(MANC2H, manc2h); | |
1858 | ew32(MANC, manc); | |
1859 | } | |
1860 | ||
1861 | /** | |
1862 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1863 | * @adapter: board private structure | |
1864 | * | |
1865 | * Configure the Tx unit of the MAC after a reset. | |
1866 | **/ | |
1867 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
1868 | { | |
1869 | struct e1000_hw *hw = &adapter->hw; | |
1870 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1871 | u64 tdba; | |
1872 | u32 tdlen, tctl, tipg, tarc; | |
1873 | u32 ipgr1, ipgr2; | |
1874 | ||
1875 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1876 | tdba = tx_ring->dma; | |
1877 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
1878 | ew32(TDBAL, (tdba & DMA_32BIT_MASK)); | |
1879 | ew32(TDBAH, (tdba >> 32)); | |
1880 | ew32(TDLEN, tdlen); | |
1881 | ew32(TDH, 0); | |
1882 | ew32(TDT, 0); | |
1883 | tx_ring->head = E1000_TDH; | |
1884 | tx_ring->tail = E1000_TDT; | |
1885 | ||
1886 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1887 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ | |
1888 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ | |
1889 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ | |
1890 | ||
1891 | if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) | |
1892 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ | |
1893 | ||
1894 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; | |
1895 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1896 | ew32(TIPG, tipg); | |
1897 | ||
1898 | /* Set the Tx Interrupt Delay register */ | |
1899 | ew32(TIDV, adapter->tx_int_delay); | |
1900 | /* tx irq moderation */ | |
1901 | ew32(TADV, adapter->tx_abs_int_delay); | |
1902 | ||
1903 | /* Program the Transmit Control Register */ | |
1904 | tctl = er32(TCTL); | |
1905 | tctl &= ~E1000_TCTL_CT; | |
1906 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
1907 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
1908 | ||
1909 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { | |
1910 | tarc = er32(TARC0); | |
1911 | /* set the speed mode bit, we'll clear it if we're not at | |
1912 | * gigabit link later */ | |
1913 | #define SPEED_MODE_BIT (1 << 21) | |
1914 | tarc |= SPEED_MODE_BIT; | |
1915 | ew32(TARC0, tarc); | |
1916 | } | |
1917 | ||
1918 | /* errata: program both queues to unweighted RR */ | |
1919 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
1920 | tarc = er32(TARC0); | |
1921 | tarc |= 1; | |
1922 | ew32(TARC0, tarc); | |
1923 | tarc = er32(TARC1); | |
1924 | tarc |= 1; | |
1925 | ew32(TARC1, tarc); | |
1926 | } | |
1927 | ||
1928 | e1000e_config_collision_dist(hw); | |
1929 | ||
1930 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1931 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
1932 | ||
1933 | /* only set IDE if we are delaying interrupts using the timers */ | |
1934 | if (adapter->tx_int_delay) | |
1935 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1936 | ||
1937 | /* enable Report Status bit */ | |
1938 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1939 | ||
1940 | ew32(TCTL, tctl); | |
1941 | ||
1942 | adapter->tx_queue_len = adapter->netdev->tx_queue_len; | |
1943 | } | |
1944 | ||
1945 | /** | |
1946 | * e1000_setup_rctl - configure the receive control registers | |
1947 | * @adapter: Board private structure | |
1948 | **/ | |
1949 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
1950 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1951 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
1952 | { | |
1953 | struct e1000_hw *hw = &adapter->hw; | |
1954 | u32 rctl, rfctl; | |
1955 | u32 psrctl = 0; | |
1956 | u32 pages = 0; | |
1957 | ||
1958 | /* Program MC offset vector base */ | |
1959 | rctl = er32(RCTL); | |
1960 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1961 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1962 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1963 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1964 | ||
1965 | /* Do not Store bad packets */ | |
1966 | rctl &= ~E1000_RCTL_SBP; | |
1967 | ||
1968 | /* Enable Long Packet receive */ | |
1969 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
1970 | rctl &= ~E1000_RCTL_LPE; | |
1971 | else | |
1972 | rctl |= E1000_RCTL_LPE; | |
1973 | ||
1974 | /* Setup buffer sizes */ | |
1975 | rctl &= ~E1000_RCTL_SZ_4096; | |
1976 | rctl |= E1000_RCTL_BSEX; | |
1977 | switch (adapter->rx_buffer_len) { | |
1978 | case 256: | |
1979 | rctl |= E1000_RCTL_SZ_256; | |
1980 | rctl &= ~E1000_RCTL_BSEX; | |
1981 | break; | |
1982 | case 512: | |
1983 | rctl |= E1000_RCTL_SZ_512; | |
1984 | rctl &= ~E1000_RCTL_BSEX; | |
1985 | break; | |
1986 | case 1024: | |
1987 | rctl |= E1000_RCTL_SZ_1024; | |
1988 | rctl &= ~E1000_RCTL_BSEX; | |
1989 | break; | |
1990 | case 2048: | |
1991 | default: | |
1992 | rctl |= E1000_RCTL_SZ_2048; | |
1993 | rctl &= ~E1000_RCTL_BSEX; | |
1994 | break; | |
1995 | case 4096: | |
1996 | rctl |= E1000_RCTL_SZ_4096; | |
1997 | break; | |
1998 | case 8192: | |
1999 | rctl |= E1000_RCTL_SZ_8192; | |
2000 | break; | |
2001 | case 16384: | |
2002 | rctl |= E1000_RCTL_SZ_16384; | |
2003 | break; | |
2004 | } | |
2005 | ||
2006 | /* | |
2007 | * 82571 and greater support packet-split where the protocol | |
2008 | * header is placed in skb->data and the packet data is | |
2009 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
2010 | * In the case of a non-split, skb->data is linearly filled, | |
2011 | * followed by the page buffers. Therefore, skb->data is | |
2012 | * sized to hold the largest protocol header. | |
2013 | * | |
2014 | * allocations using alloc_page take too long for regular MTU | |
2015 | * so only enable packet split for jumbo frames | |
2016 | * | |
2017 | * Using pages when the page size is greater than 16k wastes | |
2018 | * a lot of memory, since we allocate 3 pages at all times | |
2019 | * per packet. | |
2020 | */ | |
2021 | adapter->rx_ps_pages = 0; | |
2022 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); | |
2023 | if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) | |
2024 | adapter->rx_ps_pages = pages; | |
2025 | ||
2026 | if (adapter->rx_ps_pages) { | |
2027 | /* Configure extra packet-split registers */ | |
2028 | rfctl = er32(RFCTL); | |
2029 | rfctl |= E1000_RFCTL_EXTEN; | |
2030 | /* disable packet split support for IPv6 extension headers, | |
2031 | * because some malformed IPv6 headers can hang the RX */ | |
2032 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | | |
2033 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
2034 | ||
2035 | ew32(RFCTL, rfctl); | |
2036 | ||
2037 | /* disable the stripping of CRC because it breaks | |
2038 | * BMC firmware connected over SMBUS */ | |
2039 | rctl |= E1000_RCTL_DTYP_PS /* | E1000_RCTL_SECRC */; | |
2040 | ||
2041 | psrctl |= adapter->rx_ps_bsize0 >> | |
2042 | E1000_PSRCTL_BSIZE0_SHIFT; | |
2043 | ||
2044 | switch (adapter->rx_ps_pages) { | |
2045 | case 3: | |
2046 | psrctl |= PAGE_SIZE << | |
2047 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2048 | case 2: | |
2049 | psrctl |= PAGE_SIZE << | |
2050 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2051 | case 1: | |
2052 | psrctl |= PAGE_SIZE >> | |
2053 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2054 | break; | |
2055 | } | |
2056 | ||
2057 | ew32(PSRCTL, psrctl); | |
2058 | } | |
2059 | ||
2060 | ew32(RCTL, rctl); | |
2061 | } | |
2062 | ||
2063 | /** | |
2064 | * e1000_configure_rx - Configure Receive Unit after Reset | |
2065 | * @adapter: board private structure | |
2066 | * | |
2067 | * Configure the Rx unit of the MAC after a reset. | |
2068 | **/ | |
2069 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
2070 | { | |
2071 | struct e1000_hw *hw = &adapter->hw; | |
2072 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
2073 | u64 rdba; | |
2074 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
2075 | ||
2076 | if (adapter->rx_ps_pages) { | |
2077 | /* this is a 32 byte descriptor */ | |
2078 | rdlen = rx_ring->count * | |
2079 | sizeof(union e1000_rx_desc_packet_split); | |
2080 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2081 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
2082 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + VLAN_HLEN + 4) { | |
2083 | rdlen = rx_ring->count * | |
2084 | sizeof(struct e1000_rx_desc); | |
2085 | adapter->clean_rx = e1000_clean_rx_irq_jumbo; | |
2086 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_jumbo; | |
2087 | } else { | |
2088 | rdlen = rx_ring->count * | |
2089 | sizeof(struct e1000_rx_desc); | |
2090 | adapter->clean_rx = e1000_clean_rx_irq; | |
2091 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2092 | } | |
2093 | ||
2094 | /* disable receives while setting up the descriptors */ | |
2095 | rctl = er32(RCTL); | |
2096 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2097 | e1e_flush(); | |
2098 | msleep(10); | |
2099 | ||
2100 | /* set the Receive Delay Timer Register */ | |
2101 | ew32(RDTR, adapter->rx_int_delay); | |
2102 | ||
2103 | /* irq moderation */ | |
2104 | ew32(RADV, adapter->rx_abs_int_delay); | |
2105 | if (adapter->itr_setting != 0) | |
2106 | ew32(ITR, | |
2107 | 1000000000 / (adapter->itr * 256)); | |
2108 | ||
2109 | ctrl_ext = er32(CTRL_EXT); | |
2110 | /* Reset delay timers after every interrupt */ | |
2111 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; | |
2112 | /* Auto-Mask interrupts upon ICR access */ | |
2113 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
2114 | ew32(IAM, 0xffffffff); | |
2115 | ew32(CTRL_EXT, ctrl_ext); | |
2116 | e1e_flush(); | |
2117 | ||
2118 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
2119 | * the Base and Length of the Rx Descriptor Ring */ | |
2120 | rdba = rx_ring->dma; | |
2121 | ew32(RDBAL, (rdba & DMA_32BIT_MASK)); | |
2122 | ew32(RDBAH, (rdba >> 32)); | |
2123 | ew32(RDLEN, rdlen); | |
2124 | ew32(RDH, 0); | |
2125 | ew32(RDT, 0); | |
2126 | rx_ring->head = E1000_RDH; | |
2127 | rx_ring->tail = E1000_RDT; | |
2128 | ||
2129 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
2130 | rxcsum = er32(RXCSUM); | |
2131 | if (adapter->flags & FLAG_RX_CSUM_ENABLED) { | |
2132 | rxcsum |= E1000_RXCSUM_TUOFL; | |
2133 | ||
2134 | /* IPv4 payload checksum for UDP fragments must be | |
2135 | * used in conjunction with packet-split. */ | |
2136 | if (adapter->rx_ps_pages) | |
2137 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
2138 | } else { | |
2139 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2140 | /* no need to clear IPPCSE as it defaults to 0 */ | |
2141 | } | |
2142 | ew32(RXCSUM, rxcsum); | |
2143 | ||
2144 | /* Enable early receives on supported devices, only takes effect when | |
2145 | * packet size is equal or larger than the specified value (in 8 byte | |
2146 | * units), e.g. using jumbo frames when setting to E1000_ERT_2048 */ | |
2147 | if ((adapter->flags & FLAG_HAS_ERT) && | |
2148 | (adapter->netdev->mtu > ETH_DATA_LEN)) | |
2149 | ew32(ERT, E1000_ERT_2048); | |
2150 | ||
2151 | /* Enable Receives */ | |
2152 | ew32(RCTL, rctl); | |
2153 | } | |
2154 | ||
2155 | /** | |
2156 | * e1000_mc_addr_list_update - Update Multicast addresses | |
2157 | * @hw: pointer to the HW structure | |
2158 | * @mc_addr_list: array of multicast addresses to program | |
2159 | * @mc_addr_count: number of multicast addresses to program | |
2160 | * @rar_used_count: the first RAR register free to program | |
2161 | * @rar_count: total number of supported Receive Address Registers | |
2162 | * | |
2163 | * Updates the Receive Address Registers and Multicast Table Array. | |
2164 | * The caller must have a packed mc_addr_list of multicast addresses. | |
2165 | * The parameter rar_count will usually be hw->mac.rar_entry_count | |
2166 | * unless there are workarounds that change this. Currently no func pointer | |
2167 | * exists and all implementations are handled in the generic version of this | |
2168 | * function. | |
2169 | **/ | |
2170 | static void e1000_mc_addr_list_update(struct e1000_hw *hw, u8 *mc_addr_list, | |
2171 | u32 mc_addr_count, u32 rar_used_count, | |
2172 | u32 rar_count) | |
2173 | { | |
2174 | hw->mac.ops.mc_addr_list_update(hw, mc_addr_list, mc_addr_count, | |
2175 | rar_used_count, rar_count); | |
2176 | } | |
2177 | ||
2178 | /** | |
2179 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2180 | * @netdev: network interface device structure | |
2181 | * | |
2182 | * The set_multi entry point is called whenever the multicast address | |
2183 | * list or the network interface flags are updated. This routine is | |
2184 | * responsible for configuring the hardware for proper multicast, | |
2185 | * promiscuous mode, and all-multi behavior. | |
2186 | **/ | |
2187 | static void e1000_set_multi(struct net_device *netdev) | |
2188 | { | |
2189 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2190 | struct e1000_hw *hw = &adapter->hw; | |
2191 | struct e1000_mac_info *mac = &hw->mac; | |
2192 | struct dev_mc_list *mc_ptr; | |
2193 | u8 *mta_list; | |
2194 | u32 rctl; | |
2195 | int i; | |
2196 | ||
2197 | /* Check for Promiscuous and All Multicast modes */ | |
2198 | ||
2199 | rctl = er32(RCTL); | |
2200 | ||
2201 | if (netdev->flags & IFF_PROMISC) { | |
2202 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2203 | } else if (netdev->flags & IFF_ALLMULTI) { | |
2204 | rctl |= E1000_RCTL_MPE; | |
2205 | rctl &= ~E1000_RCTL_UPE; | |
2206 | } else { | |
2207 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2208 | } | |
2209 | ||
2210 | ew32(RCTL, rctl); | |
2211 | ||
2212 | if (netdev->mc_count) { | |
2213 | mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC); | |
2214 | if (!mta_list) | |
2215 | return; | |
2216 | ||
2217 | /* prepare a packed array of only addresses. */ | |
2218 | mc_ptr = netdev->mc_list; | |
2219 | ||
2220 | for (i = 0; i < netdev->mc_count; i++) { | |
2221 | if (!mc_ptr) | |
2222 | break; | |
2223 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, | |
2224 | ETH_ALEN); | |
2225 | mc_ptr = mc_ptr->next; | |
2226 | } | |
2227 | ||
2228 | e1000_mc_addr_list_update(hw, mta_list, i, 1, | |
2229 | mac->rar_entry_count); | |
2230 | kfree(mta_list); | |
2231 | } else { | |
2232 | /* | |
2233 | * if we're called from probe, we might not have | |
2234 | * anything to do here, so clear out the list | |
2235 | */ | |
2236 | e1000_mc_addr_list_update(hw, NULL, 0, 1, | |
2237 | mac->rar_entry_count); | |
2238 | } | |
2239 | } | |
2240 | ||
2241 | /** | |
2242 | * e1000_configure - configure the hardware for RX and TX | |
2243 | * @adapter: private board structure | |
2244 | **/ | |
2245 | static void e1000_configure(struct e1000_adapter *adapter) | |
2246 | { | |
2247 | e1000_set_multi(adapter->netdev); | |
2248 | ||
2249 | e1000_restore_vlan(adapter); | |
2250 | e1000_init_manageability(adapter); | |
2251 | ||
2252 | e1000_configure_tx(adapter); | |
2253 | e1000_setup_rctl(adapter); | |
2254 | e1000_configure_rx(adapter); | |
2255 | adapter->alloc_rx_buf(adapter, | |
2256 | e1000_desc_unused(adapter->rx_ring)); | |
2257 | } | |
2258 | ||
2259 | /** | |
2260 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
2261 | * @adapter: address of board private structure | |
2262 | * | |
2263 | * The phy may be powered down to save power and turn off link when the | |
2264 | * driver is unloaded and wake on lan is not enabled (among others) | |
2265 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
2266 | **/ | |
2267 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
2268 | { | |
2269 | u16 mii_reg = 0; | |
2270 | ||
2271 | /* Just clear the power down bit to wake the phy back up */ | |
2272 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
2273 | /* according to the manual, the phy will retain its | |
2274 | * settings across a power-down/up cycle */ | |
2275 | e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg); | |
2276 | mii_reg &= ~MII_CR_POWER_DOWN; | |
2277 | e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg); | |
2278 | } | |
2279 | ||
2280 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
2281 | } | |
2282 | ||
2283 | /** | |
2284 | * e1000_power_down_phy - Power down the PHY | |
2285 | * | |
2286 | * Power down the PHY so no link is implied when interface is down | |
2287 | * The PHY cannot be powered down is management or WoL is active | |
2288 | */ | |
2289 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
2290 | { | |
2291 | struct e1000_hw *hw = &adapter->hw; | |
2292 | u16 mii_reg; | |
2293 | ||
2294 | /* WoL is enabled */ | |
2295 | if (!adapter->wol) | |
2296 | return; | |
2297 | ||
2298 | /* non-copper PHY? */ | |
2299 | if (adapter->hw.media_type != e1000_media_type_copper) | |
2300 | return; | |
2301 | ||
2302 | /* reset is blocked because of a SoL/IDER session */ | |
2303 | if (e1000e_check_mng_mode(hw) || | |
2304 | e1000_check_reset_block(hw)) | |
2305 | return; | |
2306 | ||
2307 | /* managebility (AMT) is enabled */ | |
2308 | if (er32(MANC) & E1000_MANC_SMBUS_EN) | |
2309 | return; | |
2310 | ||
2311 | /* power down the PHY */ | |
2312 | e1e_rphy(hw, PHY_CONTROL, &mii_reg); | |
2313 | mii_reg |= MII_CR_POWER_DOWN; | |
2314 | e1e_wphy(hw, PHY_CONTROL, mii_reg); | |
2315 | mdelay(1); | |
2316 | } | |
2317 | ||
2318 | /** | |
2319 | * e1000e_reset - bring the hardware into a known good state | |
2320 | * | |
2321 | * This function boots the hardware and enables some settings that | |
2322 | * require a configuration cycle of the hardware - those cannot be | |
2323 | * set/changed during runtime. After reset the device needs to be | |
2324 | * properly configured for rx, tx etc. | |
2325 | */ | |
2326 | void e1000e_reset(struct e1000_adapter *adapter) | |
2327 | { | |
2328 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
2329 | struct e1000_hw *hw = &adapter->hw; | |
2330 | u32 tx_space, min_tx_space, min_rx_space; | |
2331 | u16 hwm; | |
2332 | ||
2333 | if (mac->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN ) { | |
2334 | /* To maintain wire speed transmits, the Tx FIFO should be | |
2335 | * large enough to accommodate two full transmit packets, | |
2336 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
2337 | * the Rx FIFO should be large enough to accommodate at least | |
2338 | * one full receive packet and is similarly rounded up and | |
2339 | * expressed in KB. */ | |
2340 | adapter->pba = er32(PBA); | |
2341 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
2342 | tx_space = adapter->pba >> 16; | |
2343 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
2344 | adapter->pba &= 0xffff; | |
2345 | /* the tx fifo also stores 16 bytes of information about the tx | |
2346 | * but don't include ethernet FCS because hardware appends it */ | |
2347 | min_tx_space = (mac->max_frame_size + | |
2348 | sizeof(struct e1000_tx_desc) - | |
2349 | ETH_FCS_LEN) * 2; | |
2350 | min_tx_space = ALIGN(min_tx_space, 1024); | |
2351 | min_tx_space >>= 10; | |
2352 | /* software strips receive CRC, so leave room for it */ | |
2353 | min_rx_space = mac->max_frame_size; | |
2354 | min_rx_space = ALIGN(min_rx_space, 1024); | |
2355 | min_rx_space >>= 10; | |
2356 | ||
2357 | /* If current Tx allocation is less than the min Tx FIFO size, | |
2358 | * and the min Tx FIFO size is less than the current Rx FIFO | |
2359 | * allocation, take space away from current Rx allocation */ | |
2360 | if (tx_space < min_tx_space && | |
2361 | ((min_tx_space - tx_space) < adapter->pba)) { | |
2362 | adapter->pba -= - (min_tx_space - tx_space); | |
2363 | ||
2364 | /* if short on rx space, rx wins and must trump tx | |
2365 | * adjustment or use Early Receive if available */ | |
2366 | if ((adapter->pba < min_rx_space) && | |
2367 | (!(adapter->flags & FLAG_HAS_ERT))) | |
2368 | /* ERT enabled in e1000_configure_rx */ | |
2369 | adapter->pba = min_rx_space; | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | ew32(PBA, adapter->pba); | |
2374 | ||
2375 | /* flow control settings */ | |
2376 | /* The high water mark must be low enough to fit one full frame | |
2377 | * (or the size used for early receive) above it in the Rx FIFO. | |
2378 | * Set it to the lower of: | |
2379 | * - 90% of the Rx FIFO size, and | |
2380 | * - the full Rx FIFO size minus the early receive size (for parts | |
2381 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
2382 | * - the full Rx FIFO size minus one full frame */ | |
2383 | if (adapter->flags & FLAG_HAS_ERT) | |
2384 | hwm = min(((adapter->pba << 10) * 9 / 10), | |
2385 | ((adapter->pba << 10) - (E1000_ERT_2048 << 3))); | |
2386 | else | |
2387 | hwm = min(((adapter->pba << 10) * 9 / 10), | |
2388 | ((adapter->pba << 10) - mac->max_frame_size)); | |
2389 | ||
2390 | mac->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
2391 | mac->fc_low_water = mac->fc_high_water - 8; | |
2392 | ||
2393 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) | |
2394 | mac->fc_pause_time = 0xFFFF; | |
2395 | else | |
2396 | mac->fc_pause_time = E1000_FC_PAUSE_TIME; | |
2397 | mac->fc = mac->original_fc; | |
2398 | ||
2399 | /* Allow time for pending master requests to run */ | |
2400 | mac->ops.reset_hw(hw); | |
2401 | ew32(WUC, 0); | |
2402 | ||
2403 | if (mac->ops.init_hw(hw)) | |
2404 | ndev_err(adapter->netdev, "Hardware Error\n"); | |
2405 | ||
2406 | e1000_update_mng_vlan(adapter); | |
2407 | ||
2408 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
2409 | ew32(VET, ETH_P_8021Q); | |
2410 | ||
2411 | e1000e_reset_adaptive(hw); | |
2412 | e1000_get_phy_info(hw); | |
2413 | ||
2414 | if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
2415 | u16 phy_data = 0; | |
2416 | /* speed up time to link by disabling smart power down, ignore | |
2417 | * the return value of this function because there is nothing | |
2418 | * different we would do if it failed */ | |
2419 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); | |
2420 | phy_data &= ~IGP02E1000_PM_SPD; | |
2421 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
2422 | } | |
2423 | ||
2424 | e1000_release_manageability(adapter); | |
2425 | } | |
2426 | ||
2427 | int e1000e_up(struct e1000_adapter *adapter) | |
2428 | { | |
2429 | struct e1000_hw *hw = &adapter->hw; | |
2430 | ||
2431 | /* hardware has been reset, we need to reload some things */ | |
2432 | e1000_configure(adapter); | |
2433 | ||
2434 | clear_bit(__E1000_DOWN, &adapter->state); | |
2435 | ||
2436 | napi_enable(&adapter->napi); | |
2437 | e1000_irq_enable(adapter); | |
2438 | ||
2439 | /* fire a link change interrupt to start the watchdog */ | |
2440 | ew32(ICS, E1000_ICS_LSC); | |
2441 | return 0; | |
2442 | } | |
2443 | ||
2444 | void e1000e_down(struct e1000_adapter *adapter) | |
2445 | { | |
2446 | struct net_device *netdev = adapter->netdev; | |
2447 | struct e1000_hw *hw = &adapter->hw; | |
2448 | u32 tctl, rctl; | |
2449 | ||
2450 | /* signal that we're down so the interrupt handler does not | |
2451 | * reschedule our watchdog timer */ | |
2452 | set_bit(__E1000_DOWN, &adapter->state); | |
2453 | ||
2454 | /* disable receives in the hardware */ | |
2455 | rctl = er32(RCTL); | |
2456 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2457 | /* flush and sleep below */ | |
2458 | ||
2459 | netif_stop_queue(netdev); | |
2460 | ||
2461 | /* disable transmits in the hardware */ | |
2462 | tctl = er32(TCTL); | |
2463 | tctl &= ~E1000_TCTL_EN; | |
2464 | ew32(TCTL, tctl); | |
2465 | /* flush both disables and wait for them to finish */ | |
2466 | e1e_flush(); | |
2467 | msleep(10); | |
2468 | ||
2469 | napi_disable(&adapter->napi); | |
2470 | e1000_irq_disable(adapter); | |
2471 | ||
2472 | del_timer_sync(&adapter->watchdog_timer); | |
2473 | del_timer_sync(&adapter->phy_info_timer); | |
2474 | ||
2475 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2476 | netif_carrier_off(netdev); | |
2477 | adapter->link_speed = 0; | |
2478 | adapter->link_duplex = 0; | |
2479 | ||
2480 | e1000e_reset(adapter); | |
2481 | e1000_clean_tx_ring(adapter); | |
2482 | e1000_clean_rx_ring(adapter); | |
2483 | ||
2484 | /* | |
2485 | * TODO: for power management, we could drop the link and | |
2486 | * pci_disable_device here. | |
2487 | */ | |
2488 | } | |
2489 | ||
2490 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
2491 | { | |
2492 | might_sleep(); | |
2493 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
2494 | msleep(1); | |
2495 | e1000e_down(adapter); | |
2496 | e1000e_up(adapter); | |
2497 | clear_bit(__E1000_RESETTING, &adapter->state); | |
2498 | } | |
2499 | ||
2500 | /** | |
2501 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
2502 | * @adapter: board private structure to initialize | |
2503 | * | |
2504 | * e1000_sw_init initializes the Adapter private data structure. | |
2505 | * Fields are initialized based on PCI device information and | |
2506 | * OS network device settings (MTU size). | |
2507 | **/ | |
2508 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) | |
2509 | { | |
2510 | struct e1000_hw *hw = &adapter->hw; | |
2511 | struct net_device *netdev = adapter->netdev; | |
2512 | ||
2513 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
2514 | adapter->rx_ps_bsize0 = 128; | |
2515 | hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
2516 | hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
2517 | ||
2518 | adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
2519 | if (!adapter->tx_ring) | |
2520 | goto err; | |
2521 | ||
2522 | adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
2523 | if (!adapter->rx_ring) | |
2524 | goto err; | |
2525 | ||
2526 | spin_lock_init(&adapter->tx_queue_lock); | |
2527 | ||
2528 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
2529 | atomic_set(&adapter->irq_sem, 0); | |
2530 | e1000_irq_disable(adapter); | |
2531 | ||
2532 | spin_lock_init(&adapter->stats_lock); | |
2533 | ||
2534 | set_bit(__E1000_DOWN, &adapter->state); | |
2535 | return 0; | |
2536 | ||
2537 | err: | |
2538 | ndev_err(netdev, "Unable to allocate memory for queues\n"); | |
2539 | kfree(adapter->rx_ring); | |
2540 | kfree(adapter->tx_ring); | |
2541 | return -ENOMEM; | |
2542 | } | |
2543 | ||
2544 | /** | |
2545 | * e1000_open - Called when a network interface is made active | |
2546 | * @netdev: network interface device structure | |
2547 | * | |
2548 | * Returns 0 on success, negative value on failure | |
2549 | * | |
2550 | * The open entry point is called when a network interface is made | |
2551 | * active by the system (IFF_UP). At this point all resources needed | |
2552 | * for transmit and receive operations are allocated, the interrupt | |
2553 | * handler is registered with the OS, the watchdog timer is started, | |
2554 | * and the stack is notified that the interface is ready. | |
2555 | **/ | |
2556 | static int e1000_open(struct net_device *netdev) | |
2557 | { | |
2558 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2559 | struct e1000_hw *hw = &adapter->hw; | |
2560 | int err; | |
2561 | ||
2562 | /* disallow open during test */ | |
2563 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
2564 | return -EBUSY; | |
2565 | ||
2566 | /* allocate transmit descriptors */ | |
2567 | err = e1000e_setup_tx_resources(adapter); | |
2568 | if (err) | |
2569 | goto err_setup_tx; | |
2570 | ||
2571 | /* allocate receive descriptors */ | |
2572 | err = e1000e_setup_rx_resources(adapter); | |
2573 | if (err) | |
2574 | goto err_setup_rx; | |
2575 | ||
2576 | e1000e_power_up_phy(adapter); | |
2577 | ||
2578 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2579 | if ((adapter->hw.mng_cookie.status & | |
2580 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
2581 | e1000_update_mng_vlan(adapter); | |
2582 | ||
2583 | /* If AMT is enabled, let the firmware know that the network | |
2584 | * interface is now open */ | |
2585 | if ((adapter->flags & FLAG_HAS_AMT) && | |
2586 | e1000e_check_mng_mode(&adapter->hw)) | |
2587 | e1000_get_hw_control(adapter); | |
2588 | ||
2589 | /* before we allocate an interrupt, we must be ready to handle it. | |
2590 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
2591 | * as soon as we call pci_request_irq, so we have to setup our | |
2592 | * clean_rx handler before we do so. */ | |
2593 | e1000_configure(adapter); | |
2594 | ||
2595 | err = e1000_request_irq(adapter); | |
2596 | if (err) | |
2597 | goto err_req_irq; | |
2598 | ||
2599 | /* From here on the code is the same as e1000e_up() */ | |
2600 | clear_bit(__E1000_DOWN, &adapter->state); | |
2601 | ||
2602 | napi_enable(&adapter->napi); | |
2603 | ||
2604 | e1000_irq_enable(adapter); | |
2605 | ||
2606 | /* fire a link status change interrupt to start the watchdog */ | |
2607 | ew32(ICS, E1000_ICS_LSC); | |
2608 | ||
2609 | return 0; | |
2610 | ||
2611 | err_req_irq: | |
2612 | e1000_release_hw_control(adapter); | |
2613 | e1000_power_down_phy(adapter); | |
2614 | e1000e_free_rx_resources(adapter); | |
2615 | err_setup_rx: | |
2616 | e1000e_free_tx_resources(adapter); | |
2617 | err_setup_tx: | |
2618 | e1000e_reset(adapter); | |
2619 | ||
2620 | return err; | |
2621 | } | |
2622 | ||
2623 | /** | |
2624 | * e1000_close - Disables a network interface | |
2625 | * @netdev: network interface device structure | |
2626 | * | |
2627 | * Returns 0, this is not allowed to fail | |
2628 | * | |
2629 | * The close entry point is called when an interface is de-activated | |
2630 | * by the OS. The hardware is still under the drivers control, but | |
2631 | * needs to be disabled. A global MAC reset is issued to stop the | |
2632 | * hardware, and all transmit and receive resources are freed. | |
2633 | **/ | |
2634 | static int e1000_close(struct net_device *netdev) | |
2635 | { | |
2636 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2637 | ||
2638 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
2639 | e1000e_down(adapter); | |
2640 | e1000_power_down_phy(adapter); | |
2641 | e1000_free_irq(adapter); | |
2642 | ||
2643 | e1000e_free_tx_resources(adapter); | |
2644 | e1000e_free_rx_resources(adapter); | |
2645 | ||
2646 | /* kill manageability vlan ID if supported, but not if a vlan with | |
2647 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
2648 | if ((adapter->hw.mng_cookie.status & | |
2649 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2650 | !(adapter->vlgrp && | |
2651 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
2652 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
2653 | ||
2654 | /* If AMT is enabled, let the firmware know that the network | |
2655 | * interface is now closed */ | |
2656 | if ((adapter->flags & FLAG_HAS_AMT) && | |
2657 | e1000e_check_mng_mode(&adapter->hw)) | |
2658 | e1000_release_hw_control(adapter); | |
2659 | ||
2660 | return 0; | |
2661 | } | |
2662 | /** | |
2663 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2664 | * @netdev: network interface device structure | |
2665 | * @p: pointer to an address structure | |
2666 | * | |
2667 | * Returns 0 on success, negative on failure | |
2668 | **/ | |
2669 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
2670 | { | |
2671 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2672 | struct sockaddr *addr = p; | |
2673 | ||
2674 | if (!is_valid_ether_addr(addr->sa_data)) | |
2675 | return -EADDRNOTAVAIL; | |
2676 | ||
2677 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2678 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
2679 | ||
2680 | e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
2681 | ||
2682 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
2683 | /* activate the work around */ | |
2684 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
2685 | ||
2686 | /* Hold a copy of the LAA in RAR[14] This is done so that | |
2687 | * between the time RAR[0] gets clobbered and the time it | |
2688 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
2689 | * of the RARs and no incoming packets directed to this port | |
2690 | * are dropped. Eventually the LAA will be in RAR[0] and | |
2691 | * RAR[14] */ | |
2692 | e1000e_rar_set(&adapter->hw, | |
2693 | adapter->hw.mac.addr, | |
2694 | adapter->hw.mac.rar_entry_count - 1); | |
2695 | } | |
2696 | ||
2697 | return 0; | |
2698 | } | |
2699 | ||
2700 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2701 | * the phy */ | |
2702 | static void e1000_update_phy_info(unsigned long data) | |
2703 | { | |
2704 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2705 | e1000_get_phy_info(&adapter->hw); | |
2706 | } | |
2707 | ||
2708 | /** | |
2709 | * e1000e_update_stats - Update the board statistics counters | |
2710 | * @adapter: board private structure | |
2711 | **/ | |
2712 | void e1000e_update_stats(struct e1000_adapter *adapter) | |
2713 | { | |
2714 | struct e1000_hw *hw = &adapter->hw; | |
2715 | struct pci_dev *pdev = adapter->pdev; | |
2716 | unsigned long irq_flags; | |
2717 | u16 phy_tmp; | |
2718 | ||
2719 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
2720 | ||
2721 | /* | |
2722 | * Prevent stats update while adapter is being reset, or if the pci | |
2723 | * connection is down. | |
2724 | */ | |
2725 | if (adapter->link_speed == 0) | |
2726 | return; | |
2727 | if (pci_channel_offline(pdev)) | |
2728 | return; | |
2729 | ||
2730 | spin_lock_irqsave(&adapter->stats_lock, irq_flags); | |
2731 | ||
2732 | /* these counters are modified from e1000_adjust_tbi_stats, | |
2733 | * called from the interrupt context, so they must only | |
2734 | * be written while holding adapter->stats_lock | |
2735 | */ | |
2736 | ||
2737 | adapter->stats.crcerrs += er32(CRCERRS); | |
2738 | adapter->stats.gprc += er32(GPRC); | |
2739 | adapter->stats.gorcl += er32(GORCL); | |
2740 | adapter->stats.gorch += er32(GORCH); | |
2741 | adapter->stats.bprc += er32(BPRC); | |
2742 | adapter->stats.mprc += er32(MPRC); | |
2743 | adapter->stats.roc += er32(ROC); | |
2744 | ||
2745 | if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) { | |
2746 | adapter->stats.prc64 += er32(PRC64); | |
2747 | adapter->stats.prc127 += er32(PRC127); | |
2748 | adapter->stats.prc255 += er32(PRC255); | |
2749 | adapter->stats.prc511 += er32(PRC511); | |
2750 | adapter->stats.prc1023 += er32(PRC1023); | |
2751 | adapter->stats.prc1522 += er32(PRC1522); | |
2752 | adapter->stats.symerrs += er32(SYMERRS); | |
2753 | adapter->stats.sec += er32(SEC); | |
2754 | } | |
2755 | ||
2756 | adapter->stats.mpc += er32(MPC); | |
2757 | adapter->stats.scc += er32(SCC); | |
2758 | adapter->stats.ecol += er32(ECOL); | |
2759 | adapter->stats.mcc += er32(MCC); | |
2760 | adapter->stats.latecol += er32(LATECOL); | |
2761 | adapter->stats.dc += er32(DC); | |
2762 | adapter->stats.rlec += er32(RLEC); | |
2763 | adapter->stats.xonrxc += er32(XONRXC); | |
2764 | adapter->stats.xontxc += er32(XONTXC); | |
2765 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
2766 | adapter->stats.xofftxc += er32(XOFFTXC); | |
2767 | adapter->stats.fcruc += er32(FCRUC); | |
2768 | adapter->stats.gptc += er32(GPTC); | |
2769 | adapter->stats.gotcl += er32(GOTCL); | |
2770 | adapter->stats.gotch += er32(GOTCH); | |
2771 | adapter->stats.rnbc += er32(RNBC); | |
2772 | adapter->stats.ruc += er32(RUC); | |
2773 | adapter->stats.rfc += er32(RFC); | |
2774 | adapter->stats.rjc += er32(RJC); | |
2775 | adapter->stats.torl += er32(TORL); | |
2776 | adapter->stats.torh += er32(TORH); | |
2777 | adapter->stats.totl += er32(TOTL); | |
2778 | adapter->stats.toth += er32(TOTH); | |
2779 | adapter->stats.tpr += er32(TPR); | |
2780 | ||
2781 | if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) { | |
2782 | adapter->stats.ptc64 += er32(PTC64); | |
2783 | adapter->stats.ptc127 += er32(PTC127); | |
2784 | adapter->stats.ptc255 += er32(PTC255); | |
2785 | adapter->stats.ptc511 += er32(PTC511); | |
2786 | adapter->stats.ptc1023 += er32(PTC1023); | |
2787 | adapter->stats.ptc1522 += er32(PTC1522); | |
2788 | } | |
2789 | ||
2790 | adapter->stats.mptc += er32(MPTC); | |
2791 | adapter->stats.bptc += er32(BPTC); | |
2792 | ||
2793 | /* used for adaptive IFS */ | |
2794 | ||
2795 | hw->mac.tx_packet_delta = er32(TPT); | |
2796 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
2797 | hw->mac.collision_delta = er32(COLC); | |
2798 | adapter->stats.colc += hw->mac.collision_delta; | |
2799 | ||
2800 | adapter->stats.algnerrc += er32(ALGNERRC); | |
2801 | adapter->stats.rxerrc += er32(RXERRC); | |
2802 | adapter->stats.tncrs += er32(TNCRS); | |
2803 | adapter->stats.cexterr += er32(CEXTERR); | |
2804 | adapter->stats.tsctc += er32(TSCTC); | |
2805 | adapter->stats.tsctfc += er32(TSCTFC); | |
2806 | ||
2807 | adapter->stats.iac += er32(IAC); | |
2808 | ||
2809 | if (adapter->flags & FLAG_HAS_STATS_ICR_ICT) { | |
2810 | adapter->stats.icrxoc += er32(ICRXOC); | |
2811 | adapter->stats.icrxptc += er32(ICRXPTC); | |
2812 | adapter->stats.icrxatc += er32(ICRXATC); | |
2813 | adapter->stats.ictxptc += er32(ICTXPTC); | |
2814 | adapter->stats.ictxatc += er32(ICTXATC); | |
2815 | adapter->stats.ictxqec += er32(ICTXQEC); | |
2816 | adapter->stats.ictxqmtc += er32(ICTXQMTC); | |
2817 | adapter->stats.icrxdmtc += er32(ICRXDMTC); | |
2818 | } | |
2819 | ||
2820 | /* Fill out the OS statistics structure */ | |
2821 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
2822 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
2823 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
2824 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
2825 | adapter->net_stats.multicast = adapter->stats.mprc; | |
2826 | adapter->net_stats.collisions = adapter->stats.colc; | |
2827 | ||
2828 | /* Rx Errors */ | |
2829 | ||
2830 | /* RLEC on some newer hardware can be incorrect so build | |
2831 | * our own version based on RUC and ROC */ | |
2832 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
2833 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
2834 | adapter->stats.ruc + adapter->stats.roc + | |
2835 | adapter->stats.cexterr; | |
2836 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + | |
2837 | adapter->stats.roc; | |
2838 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
2839 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
2840 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
2841 | ||
2842 | /* Tx Errors */ | |
2843 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
2844 | adapter->stats.latecol; | |
2845 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
2846 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
2847 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
2848 | ||
2849 | /* Tx Dropped needs to be maintained elsewhere */ | |
2850 | ||
2851 | /* Phy Stats */ | |
2852 | if (hw->media_type == e1000_media_type_copper) { | |
2853 | if ((adapter->link_speed == SPEED_1000) && | |
2854 | (!e1e_rphy(hw, PHY_1000T_STATUS, &phy_tmp))) { | |
2855 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
2856 | adapter->phy_stats.idle_errors += phy_tmp; | |
2857 | } | |
2858 | } | |
2859 | ||
2860 | /* Management Stats */ | |
2861 | adapter->stats.mgptc += er32(MGTPTC); | |
2862 | adapter->stats.mgprc += er32(MGTPRC); | |
2863 | adapter->stats.mgpdc += er32(MGTPDC); | |
2864 | ||
2865 | spin_unlock_irqrestore(&adapter->stats_lock, irq_flags); | |
2866 | } | |
2867 | ||
2868 | static void e1000_print_link_info(struct e1000_adapter *adapter) | |
2869 | { | |
2870 | struct net_device *netdev = adapter->netdev; | |
2871 | struct e1000_hw *hw = &adapter->hw; | |
2872 | u32 ctrl = er32(CTRL); | |
2873 | ||
2874 | ndev_info(netdev, | |
2875 | "Link is Up %d Mbps %s, Flow Control: %s\n", | |
2876 | adapter->link_speed, | |
2877 | (adapter->link_duplex == FULL_DUPLEX) ? | |
2878 | "Full Duplex" : "Half Duplex", | |
2879 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? | |
2880 | "RX/TX" : | |
2881 | ((ctrl & E1000_CTRL_RFCE) ? "RX" : | |
2882 | ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
2883 | } | |
2884 | ||
2885 | /** | |
2886 | * e1000_watchdog - Timer Call-back | |
2887 | * @data: pointer to adapter cast into an unsigned long | |
2888 | **/ | |
2889 | static void e1000_watchdog(unsigned long data) | |
2890 | { | |
2891 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2892 | ||
2893 | /* Do the rest outside of interrupt context */ | |
2894 | schedule_work(&adapter->watchdog_task); | |
2895 | ||
2896 | /* TODO: make this use queue_delayed_work() */ | |
2897 | } | |
2898 | ||
2899 | static void e1000_watchdog_task(struct work_struct *work) | |
2900 | { | |
2901 | struct e1000_adapter *adapter = container_of(work, | |
2902 | struct e1000_adapter, watchdog_task); | |
2903 | ||
2904 | struct net_device *netdev = adapter->netdev; | |
2905 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
2906 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2907 | struct e1000_hw *hw = &adapter->hw; | |
2908 | u32 link, tctl; | |
2909 | s32 ret_val; | |
2910 | int tx_pending = 0; | |
2911 | ||
2912 | if ((netif_carrier_ok(netdev)) && | |
2913 | (er32(STATUS) & E1000_STATUS_LU)) | |
2914 | goto link_up; | |
2915 | ||
2916 | ret_val = mac->ops.check_for_link(hw); | |
2917 | if ((ret_val == E1000_ERR_PHY) && | |
2918 | (adapter->hw.phy.type == e1000_phy_igp_3) && | |
2919 | (er32(CTRL) & | |
2920 | E1000_PHY_CTRL_GBE_DISABLE)) { | |
2921 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
2922 | ndev_info(netdev, | |
2923 | "Gigabit has been disabled, downgrading speed\n"); | |
2924 | } | |
2925 | ||
2926 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
2927 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
2928 | e1000_update_mng_vlan(adapter); | |
2929 | ||
2930 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && | |
2931 | !(er32(TXCW) & E1000_TXCW_ANE)) | |
2932 | link = adapter->hw.mac.serdes_has_link; | |
2933 | else | |
2934 | link = er32(STATUS) & E1000_STATUS_LU; | |
2935 | ||
2936 | if (link) { | |
2937 | if (!netif_carrier_ok(netdev)) { | |
2938 | bool txb2b = 1; | |
2939 | mac->ops.get_link_up_info(&adapter->hw, | |
2940 | &adapter->link_speed, | |
2941 | &adapter->link_duplex); | |
2942 | e1000_print_link_info(adapter); | |
2943 | /* tweak tx_queue_len according to speed/duplex | |
2944 | * and adjust the timeout factor */ | |
2945 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2946 | adapter->tx_timeout_factor = 1; | |
2947 | switch (adapter->link_speed) { | |
2948 | case SPEED_10: | |
2949 | txb2b = 0; | |
2950 | netdev->tx_queue_len = 10; | |
2951 | adapter->tx_timeout_factor = 14; | |
2952 | break; | |
2953 | case SPEED_100: | |
2954 | txb2b = 0; | |
2955 | netdev->tx_queue_len = 100; | |
2956 | /* maybe add some timeout factor ? */ | |
2957 | break; | |
2958 | } | |
2959 | ||
2960 | /* workaround: re-program speed mode bit after | |
2961 | * link-up event */ | |
2962 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && | |
2963 | !txb2b) { | |
2964 | u32 tarc0; | |
2965 | tarc0 = er32(TARC0); | |
2966 | tarc0 &= ~SPEED_MODE_BIT; | |
2967 | ew32(TARC0, tarc0); | |
2968 | } | |
2969 | ||
2970 | /* disable TSO for pcie and 10/100 speeds, to avoid | |
2971 | * some hardware issues */ | |
2972 | if (!(adapter->flags & FLAG_TSO_FORCE)) { | |
2973 | switch (adapter->link_speed) { | |
2974 | case SPEED_10: | |
2975 | case SPEED_100: | |
2976 | ndev_info(netdev, | |
2977 | "10/100 speed: disabling TSO\n"); | |
2978 | netdev->features &= ~NETIF_F_TSO; | |
2979 | netdev->features &= ~NETIF_F_TSO6; | |
2980 | break; | |
2981 | case SPEED_1000: | |
2982 | netdev->features |= NETIF_F_TSO; | |
2983 | netdev->features |= NETIF_F_TSO6; | |
2984 | break; | |
2985 | default: | |
2986 | /* oops */ | |
2987 | break; | |
2988 | } | |
2989 | } | |
2990 | ||
2991 | /* enable transmits in the hardware, need to do this | |
2992 | * after setting TARC0 */ | |
2993 | tctl = er32(TCTL); | |
2994 | tctl |= E1000_TCTL_EN; | |
2995 | ew32(TCTL, tctl); | |
2996 | ||
2997 | netif_carrier_on(netdev); | |
2998 | netif_wake_queue(netdev); | |
2999 | ||
3000 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3001 | mod_timer(&adapter->phy_info_timer, | |
3002 | round_jiffies(jiffies + 2 * HZ)); | |
3003 | } else { | |
3004 | /* make sure the receive unit is started */ | |
3005 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
3006 | u32 rctl = er32(RCTL); | |
3007 | ew32(RCTL, rctl | | |
3008 | E1000_RCTL_EN); | |
3009 | } | |
3010 | } | |
3011 | } else { | |
3012 | if (netif_carrier_ok(netdev)) { | |
3013 | adapter->link_speed = 0; | |
3014 | adapter->link_duplex = 0; | |
3015 | ndev_info(netdev, "Link is Down\n"); | |
3016 | netif_carrier_off(netdev); | |
3017 | netif_stop_queue(netdev); | |
3018 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3019 | mod_timer(&adapter->phy_info_timer, | |
3020 | round_jiffies(jiffies + 2 * HZ)); | |
3021 | ||
3022 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) | |
3023 | schedule_work(&adapter->reset_task); | |
3024 | } | |
3025 | } | |
3026 | ||
3027 | link_up: | |
3028 | e1000e_update_stats(adapter); | |
3029 | ||
3030 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
3031 | adapter->tpt_old = adapter->stats.tpt; | |
3032 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
3033 | adapter->colc_old = adapter->stats.colc; | |
3034 | ||
3035 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
3036 | adapter->gorcl_old = adapter->stats.gorcl; | |
3037 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
3038 | adapter->gotcl_old = adapter->stats.gotcl; | |
3039 | ||
3040 | e1000e_update_adaptive(&adapter->hw); | |
3041 | ||
3042 | if (!netif_carrier_ok(netdev)) { | |
3043 | tx_pending = (e1000_desc_unused(tx_ring) + 1 < | |
3044 | tx_ring->count); | |
3045 | if (tx_pending) { | |
3046 | /* We've lost link, so the controller stops DMA, | |
3047 | * but we've got queued Tx work that's never going | |
3048 | * to get done, so reset controller to flush Tx. | |
3049 | * (Do the reset outside of interrupt context). */ | |
3050 | adapter->tx_timeout_count++; | |
3051 | schedule_work(&adapter->reset_task); | |
3052 | } | |
3053 | } | |
3054 | ||
3055 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
3056 | ew32(ICS, E1000_ICS_RXDMT0); | |
3057 | ||
3058 | /* Force detection of hung controller every watchdog period */ | |
3059 | adapter->detect_tx_hung = 1; | |
3060 | ||
3061 | /* With 82571 controllers, LAA may be overwritten due to controller | |
3062 | * reset from the other port. Set the appropriate LAA in RAR[0] */ | |
3063 | if (e1000e_get_laa_state_82571(hw)) | |
3064 | e1000e_rar_set(hw, adapter->hw.mac.addr, 0); | |
3065 | ||
3066 | /* Reset the timer */ | |
3067 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3068 | mod_timer(&adapter->watchdog_timer, | |
3069 | round_jiffies(jiffies + 2 * HZ)); | |
3070 | } | |
3071 | ||
3072 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
3073 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
3074 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
3075 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
3076 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 | |
3077 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
3078 | ||
3079 | static int e1000_tso(struct e1000_adapter *adapter, | |
3080 | struct sk_buff *skb) | |
3081 | { | |
3082 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3083 | struct e1000_context_desc *context_desc; | |
3084 | struct e1000_buffer *buffer_info; | |
3085 | unsigned int i; | |
3086 | u32 cmd_length = 0; | |
3087 | u16 ipcse = 0, tucse, mss; | |
3088 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
3089 | int err; | |
3090 | ||
3091 | if (skb_is_gso(skb)) { | |
3092 | if (skb_header_cloned(skb)) { | |
3093 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
3094 | if (err) | |
3095 | return err; | |
3096 | } | |
3097 | ||
3098 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
3099 | mss = skb_shinfo(skb)->gso_size; | |
3100 | if (skb->protocol == htons(ETH_P_IP)) { | |
3101 | struct iphdr *iph = ip_hdr(skb); | |
3102 | iph->tot_len = 0; | |
3103 | iph->check = 0; | |
3104 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
3105 | iph->daddr, 0, | |
3106 | IPPROTO_TCP, | |
3107 | 0); | |
3108 | cmd_length = E1000_TXD_CMD_IP; | |
3109 | ipcse = skb_transport_offset(skb) - 1; | |
3110 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
3111 | ipv6_hdr(skb)->payload_len = 0; | |
3112 | tcp_hdr(skb)->check = | |
3113 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
3114 | &ipv6_hdr(skb)->daddr, | |
3115 | 0, IPPROTO_TCP, 0); | |
3116 | ipcse = 0; | |
3117 | } | |
3118 | ipcss = skb_network_offset(skb); | |
3119 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
3120 | tucss = skb_transport_offset(skb); | |
3121 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
3122 | tucse = 0; | |
3123 | ||
3124 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
3125 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); | |
3126 | ||
3127 | i = tx_ring->next_to_use; | |
3128 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
3129 | buffer_info = &tx_ring->buffer_info[i]; | |
3130 | ||
3131 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
3132 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
3133 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
3134 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
3135 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
3136 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
3137 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
3138 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
3139 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
3140 | ||
3141 | buffer_info->time_stamp = jiffies; | |
3142 | buffer_info->next_to_watch = i; | |
3143 | ||
3144 | i++; | |
3145 | if (i == tx_ring->count) | |
3146 | i = 0; | |
3147 | tx_ring->next_to_use = i; | |
3148 | ||
3149 | return 1; | |
3150 | } | |
3151 | ||
3152 | return 0; | |
3153 | } | |
3154 | ||
3155 | static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
3156 | { | |
3157 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3158 | struct e1000_context_desc *context_desc; | |
3159 | struct e1000_buffer *buffer_info; | |
3160 | unsigned int i; | |
3161 | u8 css; | |
3162 | ||
3163 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
3164 | css = skb_transport_offset(skb); | |
3165 | ||
3166 | i = tx_ring->next_to_use; | |
3167 | buffer_info = &tx_ring->buffer_info[i]; | |
3168 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
3169 | ||
3170 | context_desc->lower_setup.ip_config = 0; | |
3171 | context_desc->upper_setup.tcp_fields.tucss = css; | |
3172 | context_desc->upper_setup.tcp_fields.tucso = | |
3173 | css + skb->csum_offset; | |
3174 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
3175 | context_desc->tcp_seg_setup.data = 0; | |
3176 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
3177 | ||
3178 | buffer_info->time_stamp = jiffies; | |
3179 | buffer_info->next_to_watch = i; | |
3180 | ||
3181 | i++; | |
3182 | if (i == tx_ring->count) | |
3183 | i = 0; | |
3184 | tx_ring->next_to_use = i; | |
3185 | ||
3186 | return 1; | |
3187 | } | |
3188 | ||
3189 | return 0; | |
3190 | } | |
3191 | ||
3192 | #define E1000_MAX_PER_TXD 8192 | |
3193 | #define E1000_MAX_TXD_PWR 12 | |
3194 | ||
3195 | static int e1000_tx_map(struct e1000_adapter *adapter, | |
3196 | struct sk_buff *skb, unsigned int first, | |
3197 | unsigned int max_per_txd, unsigned int nr_frags, | |
3198 | unsigned int mss) | |
3199 | { | |
3200 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3201 | struct e1000_buffer *buffer_info; | |
3202 | unsigned int len = skb->len - skb->data_len; | |
3203 | unsigned int offset = 0, size, count = 0, i; | |
3204 | unsigned int f; | |
3205 | ||
3206 | i = tx_ring->next_to_use; | |
3207 | ||
3208 | while (len) { | |
3209 | buffer_info = &tx_ring->buffer_info[i]; | |
3210 | size = min(len, max_per_txd); | |
3211 | ||
3212 | /* Workaround for premature desc write-backs | |
3213 | * in TSO mode. Append 4-byte sentinel desc */ | |
3214 | if (mss && !nr_frags && size == len && size > 8) | |
3215 | size -= 4; | |
3216 | ||
3217 | buffer_info->length = size; | |
3218 | /* set time_stamp *before* dma to help avoid a possible race */ | |
3219 | buffer_info->time_stamp = jiffies; | |
3220 | buffer_info->dma = | |
3221 | pci_map_single(adapter->pdev, | |
3222 | skb->data + offset, | |
3223 | size, | |
3224 | PCI_DMA_TODEVICE); | |
3225 | if (pci_dma_mapping_error(buffer_info->dma)) { | |
3226 | dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); | |
3227 | adapter->tx_dma_failed++; | |
3228 | return -1; | |
3229 | } | |
3230 | buffer_info->next_to_watch = i; | |
3231 | ||
3232 | len -= size; | |
3233 | offset += size; | |
3234 | count++; | |
3235 | i++; | |
3236 | if (i == tx_ring->count) | |
3237 | i = 0; | |
3238 | } | |
3239 | ||
3240 | for (f = 0; f < nr_frags; f++) { | |
3241 | struct skb_frag_struct *frag; | |
3242 | ||
3243 | frag = &skb_shinfo(skb)->frags[f]; | |
3244 | len = frag->size; | |
3245 | offset = frag->page_offset; | |
3246 | ||
3247 | while (len) { | |
3248 | buffer_info = &tx_ring->buffer_info[i]; | |
3249 | size = min(len, max_per_txd); | |
3250 | /* Workaround for premature desc write-backs | |
3251 | * in TSO mode. Append 4-byte sentinel desc */ | |
3252 | if (mss && f == (nr_frags-1) && size == len && size > 8) | |
3253 | size -= 4; | |
3254 | ||
3255 | buffer_info->length = size; | |
3256 | buffer_info->time_stamp = jiffies; | |
3257 | buffer_info->dma = | |
3258 | pci_map_page(adapter->pdev, | |
3259 | frag->page, | |
3260 | offset, | |
3261 | size, | |
3262 | PCI_DMA_TODEVICE); | |
3263 | if (pci_dma_mapping_error(buffer_info->dma)) { | |
3264 | dev_err(&adapter->pdev->dev, | |
3265 | "TX DMA page map failed\n"); | |
3266 | adapter->tx_dma_failed++; | |
3267 | return -1; | |
3268 | } | |
3269 | ||
3270 | buffer_info->next_to_watch = i; | |
3271 | ||
3272 | len -= size; | |
3273 | offset += size; | |
3274 | count++; | |
3275 | ||
3276 | i++; | |
3277 | if (i == tx_ring->count) | |
3278 | i = 0; | |
3279 | } | |
3280 | } | |
3281 | ||
3282 | if (i == 0) | |
3283 | i = tx_ring->count - 1; | |
3284 | else | |
3285 | i--; | |
3286 | ||
3287 | tx_ring->buffer_info[i].skb = skb; | |
3288 | tx_ring->buffer_info[first].next_to_watch = i; | |
3289 | ||
3290 | return count; | |
3291 | } | |
3292 | ||
3293 | static void e1000_tx_queue(struct e1000_adapter *adapter, | |
3294 | int tx_flags, int count) | |
3295 | { | |
3296 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3297 | struct e1000_tx_desc *tx_desc = NULL; | |
3298 | struct e1000_buffer *buffer_info; | |
3299 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
3300 | unsigned int i; | |
3301 | ||
3302 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
3303 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
3304 | E1000_TXD_CMD_TSE; | |
3305 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3306 | ||
3307 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
3308 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
3309 | } | |
3310 | ||
3311 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
3312 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
3313 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3314 | } | |
3315 | ||
3316 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
3317 | txd_lower |= E1000_TXD_CMD_VLE; | |
3318 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3319 | } | |
3320 | ||
3321 | i = tx_ring->next_to_use; | |
3322 | ||
3323 | while (count--) { | |
3324 | buffer_info = &tx_ring->buffer_info[i]; | |
3325 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3326 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3327 | tx_desc->lower.data = | |
3328 | cpu_to_le32(txd_lower | buffer_info->length); | |
3329 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
3330 | ||
3331 | i++; | |
3332 | if (i == tx_ring->count) | |
3333 | i = 0; | |
3334 | } | |
3335 | ||
3336 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3337 | ||
3338 | /* Force memory writes to complete before letting h/w | |
3339 | * know there are new descriptors to fetch. (Only | |
3340 | * applicable for weak-ordered memory model archs, | |
3341 | * such as IA-64). */ | |
3342 | wmb(); | |
3343 | ||
3344 | tx_ring->next_to_use = i; | |
3345 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
3346 | /* we need this if more than one processor can write to our tail | |
3347 | * at a time, it synchronizes IO on IA64/Altix systems */ | |
3348 | mmiowb(); | |
3349 | } | |
3350 | ||
3351 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
3352 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
3353 | struct sk_buff *skb) | |
3354 | { | |
3355 | struct e1000_hw *hw = &adapter->hw; | |
3356 | u16 length, offset; | |
3357 | ||
3358 | if (vlan_tx_tag_present(skb)) { | |
3359 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) | |
3360 | && (adapter->hw.mng_cookie.status & | |
3361 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) | |
3362 | return 0; | |
3363 | } | |
3364 | ||
3365 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
3366 | return 0; | |
3367 | ||
3368 | if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) | |
3369 | return 0; | |
3370 | ||
3371 | { | |
3372 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); | |
3373 | struct udphdr *udp; | |
3374 | ||
3375 | if (ip->protocol != IPPROTO_UDP) | |
3376 | return 0; | |
3377 | ||
3378 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
3379 | if (ntohs(udp->dest) != 67) | |
3380 | return 0; | |
3381 | ||
3382 | offset = (u8 *)udp + 8 - skb->data; | |
3383 | length = skb->len - offset; | |
3384 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
3385 | } | |
3386 | ||
3387 | return 0; | |
3388 | } | |
3389 | ||
3390 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
3391 | { | |
3392 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3393 | ||
3394 | netif_stop_queue(netdev); | |
3395 | /* Herbert's original patch had: | |
3396 | * smp_mb__after_netif_stop_queue(); | |
3397 | * but since that doesn't exist yet, just open code it. */ | |
3398 | smp_mb(); | |
3399 | ||
3400 | /* We need to check again in a case another CPU has just | |
3401 | * made room available. */ | |
3402 | if (e1000_desc_unused(adapter->tx_ring) < size) | |
3403 | return -EBUSY; | |
3404 | ||
3405 | /* A reprieve! */ | |
3406 | netif_start_queue(netdev); | |
3407 | ++adapter->restart_queue; | |
3408 | return 0; | |
3409 | } | |
3410 | ||
3411 | static int e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
3412 | { | |
3413 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3414 | ||
3415 | if (e1000_desc_unused(adapter->tx_ring) >= size) | |
3416 | return 0; | |
3417 | return __e1000_maybe_stop_tx(netdev, size); | |
3418 | } | |
3419 | ||
3420 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) | |
3421 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
3422 | { | |
3423 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3424 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3425 | unsigned int first; | |
3426 | unsigned int max_per_txd = E1000_MAX_PER_TXD; | |
3427 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3428 | unsigned int tx_flags = 0; | |
3429 | unsigned int len = skb->len; | |
3430 | unsigned long irq_flags; | |
3431 | unsigned int nr_frags = 0; | |
3432 | unsigned int mss = 0; | |
3433 | int count = 0; | |
3434 | int tso; | |
3435 | unsigned int f; | |
3436 | len -= skb->data_len; | |
3437 | ||
3438 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
3439 | dev_kfree_skb_any(skb); | |
3440 | return NETDEV_TX_OK; | |
3441 | } | |
3442 | ||
3443 | if (skb->len <= 0) { | |
3444 | dev_kfree_skb_any(skb); | |
3445 | return NETDEV_TX_OK; | |
3446 | } | |
3447 | ||
3448 | mss = skb_shinfo(skb)->gso_size; | |
3449 | /* The controller does a simple calculation to | |
3450 | * make sure there is enough room in the FIFO before | |
3451 | * initiating the DMA for each buffer. The calc is: | |
3452 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3453 | * overrun the FIFO, adjust the max buffer len if mss | |
3454 | * drops. */ | |
3455 | if (mss) { | |
3456 | u8 hdr_len; | |
3457 | max_per_txd = min(mss << 2, max_per_txd); | |
3458 | max_txd_pwr = fls(max_per_txd) - 1; | |
3459 | ||
3460 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data | |
3461 | * points to just header, pull a few bytes of payload from | |
3462 | * frags into skb->data */ | |
3463 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
3464 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { | |
3465 | unsigned int pull_size; | |
3466 | ||
3467 | pull_size = min((unsigned int)4, skb->data_len); | |
3468 | if (!__pskb_pull_tail(skb, pull_size)) { | |
3469 | ndev_err(netdev, | |
3470 | "__pskb_pull_tail failed.\n"); | |
3471 | dev_kfree_skb_any(skb); | |
3472 | return NETDEV_TX_OK; | |
3473 | } | |
3474 | len = skb->len - skb->data_len; | |
3475 | } | |
3476 | } | |
3477 | ||
3478 | /* reserve a descriptor for the offload context */ | |
3479 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
3480 | count++; | |
3481 | count++; | |
3482 | ||
3483 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
3484 | ||
3485 | nr_frags = skb_shinfo(skb)->nr_frags; | |
3486 | for (f = 0; f < nr_frags; f++) | |
3487 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
3488 | max_txd_pwr); | |
3489 | ||
3490 | if (adapter->hw.mac.tx_pkt_filtering) | |
3491 | e1000_transfer_dhcp_info(adapter, skb); | |
3492 | ||
3493 | if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags)) | |
3494 | /* Collision - tell upper layer to requeue */ | |
3495 | return NETDEV_TX_LOCKED; | |
3496 | ||
3497 | /* need: count + 2 desc gap to keep tail from touching | |
3498 | * head, otherwise try next time */ | |
3499 | if (e1000_maybe_stop_tx(netdev, count + 2)) { | |
3500 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
3501 | return NETDEV_TX_BUSY; | |
3502 | } | |
3503 | ||
3504 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
3505 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
3506 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3507 | } | |
3508 | ||
3509 | first = tx_ring->next_to_use; | |
3510 | ||
3511 | tso = e1000_tso(adapter, skb); | |
3512 | if (tso < 0) { | |
3513 | dev_kfree_skb_any(skb); | |
3514 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
3515 | return NETDEV_TX_OK; | |
3516 | } | |
3517 | ||
3518 | if (tso) | |
3519 | tx_flags |= E1000_TX_FLAGS_TSO; | |
3520 | else if (e1000_tx_csum(adapter, skb)) | |
3521 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
3522 | ||
3523 | /* Old method was to assume IPv4 packet by default if TSO was enabled. | |
3524 | * 82571 hardware supports TSO capabilities for IPv6 as well... | |
3525 | * no longer assume, we must. */ | |
3526 | if (skb->protocol == htons(ETH_P_IP)) | |
3527 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
3528 | ||
3529 | count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); | |
3530 | if (count < 0) { | |
3531 | /* handle pci_map_single() error in e1000_tx_map */ | |
3532 | dev_kfree_skb_any(skb); | |
3533 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
3534 | return NETDEV_TX_BUSY; | |
3535 | } | |
3536 | ||
3537 | e1000_tx_queue(adapter, tx_flags, count); | |
3538 | ||
3539 | netdev->trans_start = jiffies; | |
3540 | ||
3541 | /* Make sure there is space in the ring for the next send. */ | |
3542 | e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); | |
3543 | ||
3544 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
3545 | return NETDEV_TX_OK; | |
3546 | } | |
3547 | ||
3548 | /** | |
3549 | * e1000_tx_timeout - Respond to a Tx Hang | |
3550 | * @netdev: network interface device structure | |
3551 | **/ | |
3552 | static void e1000_tx_timeout(struct net_device *netdev) | |
3553 | { | |
3554 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3555 | ||
3556 | /* Do the reset outside of interrupt context */ | |
3557 | adapter->tx_timeout_count++; | |
3558 | schedule_work(&adapter->reset_task); | |
3559 | } | |
3560 | ||
3561 | static void e1000_reset_task(struct work_struct *work) | |
3562 | { | |
3563 | struct e1000_adapter *adapter; | |
3564 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
3565 | ||
3566 | e1000e_reinit_locked(adapter); | |
3567 | } | |
3568 | ||
3569 | /** | |
3570 | * e1000_get_stats - Get System Network Statistics | |
3571 | * @netdev: network interface device structure | |
3572 | * | |
3573 | * Returns the address of the device statistics structure. | |
3574 | * The statistics are actually updated from the timer callback. | |
3575 | **/ | |
3576 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) | |
3577 | { | |
3578 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3579 | ||
3580 | /* only return the current stats */ | |
3581 | return &adapter->net_stats; | |
3582 | } | |
3583 | ||
3584 | /** | |
3585 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3586 | * @netdev: network interface device structure | |
3587 | * @new_mtu: new value for maximum frame size | |
3588 | * | |
3589 | * Returns 0 on success, negative on failure | |
3590 | **/ | |
3591 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3592 | { | |
3593 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3594 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
3595 | ||
3596 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
3597 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3598 | ndev_err(netdev, "Invalid MTU setting\n"); | |
3599 | return -EINVAL; | |
3600 | } | |
3601 | ||
3602 | /* Jumbo frame size limits */ | |
3603 | if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) { | |
3604 | if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
3605 | ndev_err(netdev, "Jumbo Frames not supported.\n"); | |
3606 | return -EINVAL; | |
3607 | } | |
3608 | if (adapter->hw.phy.type == e1000_phy_ife) { | |
3609 | ndev_err(netdev, "Jumbo Frames not supported.\n"); | |
3610 | return -EINVAL; | |
3611 | } | |
3612 | } | |
3613 | ||
3614 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 | |
3615 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3616 | ndev_err(netdev, "MTU > 9216 not supported.\n"); | |
3617 | return -EINVAL; | |
3618 | } | |
3619 | ||
3620 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
3621 | msleep(1); | |
3622 | /* e1000e_down has a dependency on max_frame_size */ | |
3623 | adapter->hw.mac.max_frame_size = max_frame; | |
3624 | if (netif_running(netdev)) | |
3625 | e1000e_down(adapter); | |
3626 | ||
3627 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
3628 | * means we reserve 2 more, this pushes us to allocate from the next | |
3629 | * larger slab size. | |
3630 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3631 | * however with the new *_jumbo* routines, jumbo receives will use | |
3632 | * fragmented skbs */ | |
3633 | ||
3634 | if (max_frame <= 256) | |
3635 | adapter->rx_buffer_len = 256; | |
3636 | else if (max_frame <= 512) | |
3637 | adapter->rx_buffer_len = 512; | |
3638 | else if (max_frame <= 1024) | |
3639 | adapter->rx_buffer_len = 1024; | |
3640 | else if (max_frame <= 2048) | |
3641 | adapter->rx_buffer_len = 2048; | |
3642 | else | |
3643 | adapter->rx_buffer_len = 4096; | |
3644 | ||
3645 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
3646 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
3647 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
3648 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN | |
3649 | + ETH_FCS_LEN ; | |
3650 | ||
3651 | ndev_info(netdev, "changing MTU from %d to %d\n", | |
3652 | netdev->mtu, new_mtu); | |
3653 | netdev->mtu = new_mtu; | |
3654 | ||
3655 | if (netif_running(netdev)) | |
3656 | e1000e_up(adapter); | |
3657 | else | |
3658 | e1000e_reset(adapter); | |
3659 | ||
3660 | clear_bit(__E1000_RESETTING, &adapter->state); | |
3661 | ||
3662 | return 0; | |
3663 | } | |
3664 | ||
3665 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
3666 | int cmd) | |
3667 | { | |
3668 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3669 | struct mii_ioctl_data *data = if_mii(ifr); | |
3670 | unsigned long irq_flags; | |
3671 | ||
3672 | if (adapter->hw.media_type != e1000_media_type_copper) | |
3673 | return -EOPNOTSUPP; | |
3674 | ||
3675 | switch (cmd) { | |
3676 | case SIOCGMIIPHY: | |
3677 | data->phy_id = adapter->hw.phy.addr; | |
3678 | break; | |
3679 | case SIOCGMIIREG: | |
3680 | if (!capable(CAP_NET_ADMIN)) | |
3681 | return -EPERM; | |
3682 | spin_lock_irqsave(&adapter->stats_lock, irq_flags); | |
3683 | if (e1e_rphy(&adapter->hw, data->reg_num & 0x1F, | |
3684 | &data->val_out)) { | |
3685 | spin_unlock_irqrestore(&adapter->stats_lock, irq_flags); | |
3686 | return -EIO; | |
3687 | } | |
3688 | spin_unlock_irqrestore(&adapter->stats_lock, irq_flags); | |
3689 | break; | |
3690 | case SIOCSMIIREG: | |
3691 | default: | |
3692 | return -EOPNOTSUPP; | |
3693 | } | |
3694 | return 0; | |
3695 | } | |
3696 | ||
3697 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
3698 | { | |
3699 | switch (cmd) { | |
3700 | case SIOCGMIIPHY: | |
3701 | case SIOCGMIIREG: | |
3702 | case SIOCSMIIREG: | |
3703 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
3704 | default: | |
3705 | return -EOPNOTSUPP; | |
3706 | } | |
3707 | } | |
3708 | ||
3709 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) | |
3710 | { | |
3711 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3712 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3713 | struct e1000_hw *hw = &adapter->hw; | |
3714 | u32 ctrl, ctrl_ext, rctl, status; | |
3715 | u32 wufc = adapter->wol; | |
3716 | int retval = 0; | |
3717 | ||
3718 | netif_device_detach(netdev); | |
3719 | ||
3720 | if (netif_running(netdev)) { | |
3721 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
3722 | e1000e_down(adapter); | |
3723 | e1000_free_irq(adapter); | |
3724 | } | |
3725 | ||
3726 | retval = pci_save_state(pdev); | |
3727 | if (retval) | |
3728 | return retval; | |
3729 | ||
3730 | status = er32(STATUS); | |
3731 | if (status & E1000_STATUS_LU) | |
3732 | wufc &= ~E1000_WUFC_LNKC; | |
3733 | ||
3734 | if (wufc) { | |
3735 | e1000_setup_rctl(adapter); | |
3736 | e1000_set_multi(netdev); | |
3737 | ||
3738 | /* turn on all-multi mode if wake on multicast is enabled */ | |
3739 | if (wufc & E1000_WUFC_MC) { | |
3740 | rctl = er32(RCTL); | |
3741 | rctl |= E1000_RCTL_MPE; | |
3742 | ew32(RCTL, rctl); | |
3743 | } | |
3744 | ||
3745 | ctrl = er32(CTRL); | |
3746 | /* advertise wake from D3Cold */ | |
3747 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
3748 | /* phy power management enable */ | |
3749 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
3750 | ctrl |= E1000_CTRL_ADVD3WUC | | |
3751 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
3752 | ew32(CTRL, ctrl); | |
3753 | ||
3754 | if (adapter->hw.media_type == e1000_media_type_fiber || | |
3755 | adapter->hw.media_type == e1000_media_type_internal_serdes) { | |
3756 | /* keep the laser running in D3 */ | |
3757 | ctrl_ext = er32(CTRL_EXT); | |
3758 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
3759 | ew32(CTRL_EXT, ctrl_ext); | |
3760 | } | |
3761 | ||
3762 | /* Allow time for pending master requests to run */ | |
3763 | e1000e_disable_pcie_master(&adapter->hw); | |
3764 | ||
3765 | ew32(WUC, E1000_WUC_PME_EN); | |
3766 | ew32(WUFC, wufc); | |
3767 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
3768 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
3769 | } else { | |
3770 | ew32(WUC, 0); | |
3771 | ew32(WUFC, 0); | |
3772 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
3773 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
3774 | } | |
3775 | ||
3776 | e1000_release_manageability(adapter); | |
3777 | ||
3778 | /* make sure adapter isn't asleep if manageability is enabled */ | |
3779 | if (adapter->flags & FLAG_MNG_PT_ENABLED) { | |
3780 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
3781 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
3782 | } | |
3783 | ||
3784 | if (adapter->hw.phy.type == e1000_phy_igp_3) | |
3785 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); | |
3786 | ||
3787 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
3788 | * would have already happened in close and is redundant. */ | |
3789 | e1000_release_hw_control(adapter); | |
3790 | ||
3791 | pci_disable_device(pdev); | |
3792 | ||
3793 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
3794 | ||
3795 | return 0; | |
3796 | } | |
3797 | ||
3798 | #ifdef CONFIG_PM | |
3799 | static int e1000_resume(struct pci_dev *pdev) | |
3800 | { | |
3801 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3802 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3803 | struct e1000_hw *hw = &adapter->hw; | |
3804 | u32 err; | |
3805 | ||
3806 | pci_set_power_state(pdev, PCI_D0); | |
3807 | pci_restore_state(pdev); | |
3808 | err = pci_enable_device(pdev); | |
3809 | if (err) { | |
3810 | dev_err(&pdev->dev, | |
3811 | "Cannot enable PCI device from suspend\n"); | |
3812 | return err; | |
3813 | } | |
3814 | ||
3815 | pci_set_master(pdev); | |
3816 | ||
3817 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
3818 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
3819 | ||
3820 | if (netif_running(netdev)) { | |
3821 | err = e1000_request_irq(adapter); | |
3822 | if (err) | |
3823 | return err; | |
3824 | } | |
3825 | ||
3826 | e1000e_power_up_phy(adapter); | |
3827 | e1000e_reset(adapter); | |
3828 | ew32(WUS, ~0); | |
3829 | ||
3830 | e1000_init_manageability(adapter); | |
3831 | ||
3832 | if (netif_running(netdev)) | |
3833 | e1000e_up(adapter); | |
3834 | ||
3835 | netif_device_attach(netdev); | |
3836 | ||
3837 | /* If the controller has AMT, do not set DRV_LOAD until the interface | |
3838 | * is up. For all other cases, let the f/w know that the h/w is now | |
3839 | * under the control of the driver. */ | |
3840 | if (!(adapter->flags & FLAG_HAS_AMT) || !e1000e_check_mng_mode(&adapter->hw)) | |
3841 | e1000_get_hw_control(adapter); | |
3842 | ||
3843 | return 0; | |
3844 | } | |
3845 | #endif | |
3846 | ||
3847 | static void e1000_shutdown(struct pci_dev *pdev) | |
3848 | { | |
3849 | e1000_suspend(pdev, PMSG_SUSPEND); | |
3850 | } | |
3851 | ||
3852 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3853 | /* | |
3854 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
3855 | * without having to re-enable interrupts. It's not called while | |
3856 | * the interrupt routine is executing. | |
3857 | */ | |
3858 | static void e1000_netpoll(struct net_device *netdev) | |
3859 | { | |
3860 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3861 | ||
3862 | disable_irq(adapter->pdev->irq); | |
3863 | e1000_intr(adapter->pdev->irq, netdev); | |
3864 | ||
3865 | e1000_clean_tx_irq(adapter); | |
3866 | ||
3867 | enable_irq(adapter->pdev->irq); | |
3868 | } | |
3869 | #endif | |
3870 | ||
3871 | /** | |
3872 | * e1000_io_error_detected - called when PCI error is detected | |
3873 | * @pdev: Pointer to PCI device | |
3874 | * @state: The current pci connection state | |
3875 | * | |
3876 | * This function is called after a PCI bus error affecting | |
3877 | * this device has been detected. | |
3878 | */ | |
3879 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
3880 | pci_channel_state_t state) | |
3881 | { | |
3882 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3883 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3884 | ||
3885 | netif_device_detach(netdev); | |
3886 | ||
3887 | if (netif_running(netdev)) | |
3888 | e1000e_down(adapter); | |
3889 | pci_disable_device(pdev); | |
3890 | ||
3891 | /* Request a slot slot reset. */ | |
3892 | return PCI_ERS_RESULT_NEED_RESET; | |
3893 | } | |
3894 | ||
3895 | /** | |
3896 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
3897 | * @pdev: Pointer to PCI device | |
3898 | * | |
3899 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
3900 | * resembles the first-half of the e1000_resume routine. | |
3901 | */ | |
3902 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
3903 | { | |
3904 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3905 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3906 | struct e1000_hw *hw = &adapter->hw; | |
3907 | ||
3908 | if (pci_enable_device(pdev)) { | |
3909 | dev_err(&pdev->dev, | |
3910 | "Cannot re-enable PCI device after reset.\n"); | |
3911 | return PCI_ERS_RESULT_DISCONNECT; | |
3912 | } | |
3913 | pci_set_master(pdev); | |
3914 | ||
3915 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
3916 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
3917 | ||
3918 | e1000e_reset(adapter); | |
3919 | ew32(WUS, ~0); | |
3920 | ||
3921 | return PCI_ERS_RESULT_RECOVERED; | |
3922 | } | |
3923 | ||
3924 | /** | |
3925 | * e1000_io_resume - called when traffic can start flowing again. | |
3926 | * @pdev: Pointer to PCI device | |
3927 | * | |
3928 | * This callback is called when the error recovery driver tells us that | |
3929 | * its OK to resume normal operation. Implementation resembles the | |
3930 | * second-half of the e1000_resume routine. | |
3931 | */ | |
3932 | static void e1000_io_resume(struct pci_dev *pdev) | |
3933 | { | |
3934 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3935 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3936 | ||
3937 | e1000_init_manageability(adapter); | |
3938 | ||
3939 | if (netif_running(netdev)) { | |
3940 | if (e1000e_up(adapter)) { | |
3941 | dev_err(&pdev->dev, | |
3942 | "can't bring device back up after reset\n"); | |
3943 | return; | |
3944 | } | |
3945 | } | |
3946 | ||
3947 | netif_device_attach(netdev); | |
3948 | ||
3949 | /* If the controller has AMT, do not set DRV_LOAD until the interface | |
3950 | * is up. For all other cases, let the f/w know that the h/w is now | |
3951 | * under the control of the driver. */ | |
3952 | if (!(adapter->flags & FLAG_HAS_AMT) || | |
3953 | !e1000e_check_mng_mode(&adapter->hw)) | |
3954 | e1000_get_hw_control(adapter); | |
3955 | ||
3956 | } | |
3957 | ||
3958 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
3959 | { | |
3960 | struct e1000_hw *hw = &adapter->hw; | |
3961 | struct net_device *netdev = adapter->netdev; | |
3962 | u32 part_num; | |
3963 | ||
3964 | /* print bus type/speed/width info */ | |
3965 | ndev_info(netdev, "(PCI Express:2.5GB/s:%s) " | |
3966 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
3967 | /* bus width */ | |
3968 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
3969 | "Width x1"), | |
3970 | /* MAC address */ | |
3971 | netdev->dev_addr[0], netdev->dev_addr[1], | |
3972 | netdev->dev_addr[2], netdev->dev_addr[3], | |
3973 | netdev->dev_addr[4], netdev->dev_addr[5]); | |
3974 | ndev_info(netdev, "Intel(R) PRO/%s Network Connection\n", | |
3975 | (hw->phy.type == e1000_phy_ife) | |
3976 | ? "10/100" : "1000"); | |
3977 | e1000e_read_part_num(hw, &part_num); | |
3978 | ndev_info(netdev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", | |
3979 | hw->mac.type, hw->phy.type, | |
3980 | (part_num >> 8), (part_num & 0xff)); | |
3981 | } | |
3982 | ||
3983 | /** | |
3984 | * e1000_probe - Device Initialization Routine | |
3985 | * @pdev: PCI device information struct | |
3986 | * @ent: entry in e1000_pci_tbl | |
3987 | * | |
3988 | * Returns 0 on success, negative on failure | |
3989 | * | |
3990 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
3991 | * The OS initialization, configuring of the adapter private structure, | |
3992 | * and a hardware reset occur. | |
3993 | **/ | |
3994 | static int __devinit e1000_probe(struct pci_dev *pdev, | |
3995 | const struct pci_device_id *ent) | |
3996 | { | |
3997 | struct net_device *netdev; | |
3998 | struct e1000_adapter *adapter; | |
3999 | struct e1000_hw *hw; | |
4000 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
4001 | unsigned long mmio_start, mmio_len; | |
4002 | unsigned long flash_start, flash_len; | |
4003 | ||
4004 | static int cards_found; | |
4005 | int i, err, pci_using_dac; | |
4006 | u16 eeprom_data = 0; | |
4007 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
4008 | ||
4009 | err = pci_enable_device(pdev); | |
4010 | if (err) | |
4011 | return err; | |
4012 | ||
4013 | pci_using_dac = 0; | |
4014 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
4015 | if (!err) { | |
4016 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
4017 | if (!err) | |
4018 | pci_using_dac = 1; | |
4019 | } else { | |
4020 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
4021 | if (err) { | |
4022 | err = pci_set_consistent_dma_mask(pdev, | |
4023 | DMA_32BIT_MASK); | |
4024 | if (err) { | |
4025 | dev_err(&pdev->dev, "No usable DMA " | |
4026 | "configuration, aborting\n"); | |
4027 | goto err_dma; | |
4028 | } | |
4029 | } | |
4030 | } | |
4031 | ||
4032 | err = pci_request_regions(pdev, e1000e_driver_name); | |
4033 | if (err) | |
4034 | goto err_pci_reg; | |
4035 | ||
4036 | pci_set_master(pdev); | |
4037 | ||
4038 | err = -ENOMEM; | |
4039 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
4040 | if (!netdev) | |
4041 | goto err_alloc_etherdev; | |
4042 | ||
bc7f75fa AK |
4043 | SET_NETDEV_DEV(netdev, &pdev->dev); |
4044 | ||
4045 | pci_set_drvdata(pdev, netdev); | |
4046 | adapter = netdev_priv(netdev); | |
4047 | hw = &adapter->hw; | |
4048 | adapter->netdev = netdev; | |
4049 | adapter->pdev = pdev; | |
4050 | adapter->ei = ei; | |
4051 | adapter->pba = ei->pba; | |
4052 | adapter->flags = ei->flags; | |
4053 | adapter->hw.adapter = adapter; | |
4054 | adapter->hw.mac.type = ei->mac; | |
4055 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; | |
4056 | ||
4057 | mmio_start = pci_resource_start(pdev, 0); | |
4058 | mmio_len = pci_resource_len(pdev, 0); | |
4059 | ||
4060 | err = -EIO; | |
4061 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
4062 | if (!adapter->hw.hw_addr) | |
4063 | goto err_ioremap; | |
4064 | ||
4065 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
4066 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
4067 | flash_start = pci_resource_start(pdev, 1); | |
4068 | flash_len = pci_resource_len(pdev, 1); | |
4069 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
4070 | if (!adapter->hw.flash_address) | |
4071 | goto err_flashmap; | |
4072 | } | |
4073 | ||
4074 | /* construct the net_device struct */ | |
4075 | netdev->open = &e1000_open; | |
4076 | netdev->stop = &e1000_close; | |
4077 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
4078 | netdev->get_stats = &e1000_get_stats; | |
4079 | netdev->set_multicast_list = &e1000_set_multi; | |
4080 | netdev->set_mac_address = &e1000_set_mac; | |
4081 | netdev->change_mtu = &e1000_change_mtu; | |
4082 | netdev->do_ioctl = &e1000_ioctl; | |
4083 | e1000e_set_ethtool_ops(netdev); | |
4084 | netdev->tx_timeout = &e1000_tx_timeout; | |
4085 | netdev->watchdog_timeo = 5 * HZ; | |
4086 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); | |
4087 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
4088 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
4089 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
4090 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4091 | netdev->poll_controller = e1000_netpoll; | |
4092 | #endif | |
4093 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
4094 | ||
4095 | netdev->mem_start = mmio_start; | |
4096 | netdev->mem_end = mmio_start + mmio_len; | |
4097 | ||
4098 | adapter->bd_number = cards_found++; | |
4099 | ||
4100 | /* setup adapter struct */ | |
4101 | err = e1000_sw_init(adapter); | |
4102 | if (err) | |
4103 | goto err_sw_init; | |
4104 | ||
4105 | err = -EIO; | |
4106 | ||
4107 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
4108 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
4109 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
4110 | ||
4111 | err = ei->get_invariants(adapter); | |
4112 | if (err) | |
4113 | goto err_hw_init; | |
4114 | ||
4115 | hw->mac.ops.get_bus_info(&adapter->hw); | |
4116 | ||
4117 | adapter->hw.phy.wait_for_link = 0; | |
4118 | ||
4119 | /* Copper options */ | |
4120 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
4121 | adapter->hw.phy.mdix = AUTO_ALL_MODES; | |
4122 | adapter->hw.phy.disable_polarity_correction = 0; | |
4123 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
4124 | } | |
4125 | ||
4126 | if (e1000_check_reset_block(&adapter->hw)) | |
4127 | ndev_info(netdev, | |
4128 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
4129 | ||
4130 | netdev->features = NETIF_F_SG | | |
4131 | NETIF_F_HW_CSUM | | |
4132 | NETIF_F_HW_VLAN_TX | | |
4133 | NETIF_F_HW_VLAN_RX; | |
4134 | ||
4135 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
4136 | netdev->features |= NETIF_F_HW_VLAN_FILTER; | |
4137 | ||
4138 | netdev->features |= NETIF_F_TSO; | |
4139 | netdev->features |= NETIF_F_TSO6; | |
4140 | ||
4141 | if (pci_using_dac) | |
4142 | netdev->features |= NETIF_F_HIGHDMA; | |
4143 | ||
4144 | /* We should not be using LLTX anymore, but we are still TX faster with | |
4145 | * it. */ | |
4146 | netdev->features |= NETIF_F_LLTX; | |
4147 | ||
4148 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) | |
4149 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
4150 | ||
4151 | /* before reading the NVM, reset the controller to | |
4152 | * put the device in a known good starting state */ | |
4153 | adapter->hw.mac.ops.reset_hw(&adapter->hw); | |
4154 | ||
4155 | /* | |
4156 | * systems with ASPM and others may see the checksum fail on the first | |
4157 | * attempt. Let's give it a few tries | |
4158 | */ | |
4159 | for (i = 0;; i++) { | |
4160 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
4161 | break; | |
4162 | if (i == 2) { | |
4163 | ndev_err(netdev, "The NVM Checksum Is Not Valid\n"); | |
4164 | err = -EIO; | |
4165 | goto err_eeprom; | |
4166 | } | |
4167 | } | |
4168 | ||
4169 | /* copy the MAC address out of the NVM */ | |
4170 | if (e1000e_read_mac_addr(&adapter->hw)) | |
4171 | ndev_err(netdev, "NVM Read Error while reading MAC address\n"); | |
4172 | ||
4173 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
4174 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
4175 | ||
4176 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
4177 | ndev_err(netdev, "Invalid MAC Address: " | |
4178 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
4179 | netdev->perm_addr[0], netdev->perm_addr[1], | |
4180 | netdev->perm_addr[2], netdev->perm_addr[3], | |
4181 | netdev->perm_addr[4], netdev->perm_addr[5]); | |
4182 | err = -EIO; | |
4183 | goto err_eeprom; | |
4184 | } | |
4185 | ||
4186 | init_timer(&adapter->watchdog_timer); | |
4187 | adapter->watchdog_timer.function = &e1000_watchdog; | |
4188 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
4189 | ||
4190 | init_timer(&adapter->phy_info_timer); | |
4191 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
4192 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
4193 | ||
4194 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
4195 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
4196 | ||
4197 | e1000e_check_options(adapter); | |
4198 | ||
4199 | /* Initialize link parameters. User can change them with ethtool */ | |
4200 | adapter->hw.mac.autoneg = 1; | |
4201 | adapter->hw.mac.original_fc = e1000_fc_default; | |
4202 | adapter->hw.mac.fc = e1000_fc_default; | |
4203 | adapter->hw.phy.autoneg_advertised = 0x2f; | |
4204 | ||
4205 | /* ring size defaults */ | |
4206 | adapter->rx_ring->count = 256; | |
4207 | adapter->tx_ring->count = 256; | |
4208 | ||
4209 | /* | |
4210 | * Initial Wake on LAN setting - If APM wake is enabled in | |
4211 | * the EEPROM, enable the ACPI Magic Packet filter | |
4212 | */ | |
4213 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
4214 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
4215 | eeprom_data = er32(WUC); | |
4216 | eeprom_apme_mask = E1000_WUC_APME; | |
4217 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { | |
4218 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
4219 | (adapter->hw.bus.func == 1)) | |
4220 | e1000_read_nvm(&adapter->hw, | |
4221 | NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
4222 | else | |
4223 | e1000_read_nvm(&adapter->hw, | |
4224 | NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
4225 | } | |
4226 | ||
4227 | /* fetch WoL from EEPROM */ | |
4228 | if (eeprom_data & eeprom_apme_mask) | |
4229 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
4230 | ||
4231 | /* | |
4232 | * now that we have the eeprom settings, apply the special cases | |
4233 | * where the eeprom may be wrong or the board simply won't support | |
4234 | * wake on lan on a particular port | |
4235 | */ | |
4236 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
4237 | adapter->eeprom_wol = 0; | |
4238 | ||
4239 | /* initialize the wol settings based on the eeprom settings */ | |
4240 | adapter->wol = adapter->eeprom_wol; | |
4241 | ||
4242 | /* reset the hardware with the new settings */ | |
4243 | e1000e_reset(adapter); | |
4244 | ||
4245 | /* If the controller has AMT, do not set DRV_LOAD until the interface | |
4246 | * is up. For all other cases, let the f/w know that the h/w is now | |
4247 | * under the control of the driver. */ | |
4248 | if (!(adapter->flags & FLAG_HAS_AMT) || | |
4249 | !e1000e_check_mng_mode(&adapter->hw)) | |
4250 | e1000_get_hw_control(adapter); | |
4251 | ||
4252 | /* tell the stack to leave us alone until e1000_open() is called */ | |
4253 | netif_carrier_off(netdev); | |
4254 | netif_stop_queue(netdev); | |
4255 | ||
4256 | strcpy(netdev->name, "eth%d"); | |
4257 | err = register_netdev(netdev); | |
4258 | if (err) | |
4259 | goto err_register; | |
4260 | ||
4261 | e1000_print_device_info(adapter); | |
4262 | ||
4263 | return 0; | |
4264 | ||
4265 | err_register: | |
4266 | err_hw_init: | |
4267 | e1000_release_hw_control(adapter); | |
4268 | err_eeprom: | |
4269 | if (!e1000_check_reset_block(&adapter->hw)) | |
4270 | e1000_phy_hw_reset(&adapter->hw); | |
4271 | ||
4272 | if (adapter->hw.flash_address) | |
4273 | iounmap(adapter->hw.flash_address); | |
4274 | ||
4275 | err_flashmap: | |
4276 | kfree(adapter->tx_ring); | |
4277 | kfree(adapter->rx_ring); | |
4278 | err_sw_init: | |
4279 | iounmap(adapter->hw.hw_addr); | |
4280 | err_ioremap: | |
4281 | free_netdev(netdev); | |
4282 | err_alloc_etherdev: | |
4283 | pci_release_regions(pdev); | |
4284 | err_pci_reg: | |
4285 | err_dma: | |
4286 | pci_disable_device(pdev); | |
4287 | return err; | |
4288 | } | |
4289 | ||
4290 | /** | |
4291 | * e1000_remove - Device Removal Routine | |
4292 | * @pdev: PCI device information struct | |
4293 | * | |
4294 | * e1000_remove is called by the PCI subsystem to alert the driver | |
4295 | * that it should release a PCI device. The could be caused by a | |
4296 | * Hot-Plug event, or because the driver is going to be removed from | |
4297 | * memory. | |
4298 | **/ | |
4299 | static void __devexit e1000_remove(struct pci_dev *pdev) | |
4300 | { | |
4301 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4302 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4303 | ||
4304 | /* flush_scheduled work may reschedule our watchdog task, so | |
4305 | * explicitly disable watchdog tasks from being rescheduled */ | |
4306 | set_bit(__E1000_DOWN, &adapter->state); | |
4307 | del_timer_sync(&adapter->watchdog_timer); | |
4308 | del_timer_sync(&adapter->phy_info_timer); | |
4309 | ||
4310 | flush_scheduled_work(); | |
4311 | ||
4312 | e1000_release_manageability(adapter); | |
4313 | ||
4314 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
4315 | * would have already happened in close and is redundant. */ | |
4316 | e1000_release_hw_control(adapter); | |
4317 | ||
4318 | unregister_netdev(netdev); | |
4319 | ||
4320 | if (!e1000_check_reset_block(&adapter->hw)) | |
4321 | e1000_phy_hw_reset(&adapter->hw); | |
4322 | ||
4323 | kfree(adapter->tx_ring); | |
4324 | kfree(adapter->rx_ring); | |
4325 | ||
4326 | iounmap(adapter->hw.hw_addr); | |
4327 | if (adapter->hw.flash_address) | |
4328 | iounmap(adapter->hw.flash_address); | |
4329 | pci_release_regions(pdev); | |
4330 | ||
4331 | free_netdev(netdev); | |
4332 | ||
4333 | pci_disable_device(pdev); | |
4334 | } | |
4335 | ||
4336 | /* PCI Error Recovery (ERS) */ | |
4337 | static struct pci_error_handlers e1000_err_handler = { | |
4338 | .error_detected = e1000_io_error_detected, | |
4339 | .slot_reset = e1000_io_slot_reset, | |
4340 | .resume = e1000_io_resume, | |
4341 | }; | |
4342 | ||
4343 | static struct pci_device_id e1000_pci_tbl[] = { | |
4344 | /* | |
4345 | * Support for 82571/2/3, es2lan and ich8 will be phased in | |
4346 | * stepwise. | |
4347 | ||
4348 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, | |
4349 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
4350 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
4351 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, | |
4352 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, | |
4353 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
4354 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, | |
4355 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
4356 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
4357 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
4358 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, | |
4359 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
4360 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
4361 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), | |
4362 | board_80003es2lan }, | |
4363 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
4364 | board_80003es2lan }, | |
4365 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
4366 | board_80003es2lan }, | |
4367 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
4368 | board_80003es2lan }, | |
4369 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, | |
4370 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
4371 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
4372 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
4373 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
4374 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
4375 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
4376 | */ | |
4377 | ||
4378 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, | |
4379 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
4380 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
4381 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
4382 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
4383 | ||
4384 | { } /* terminate list */ | |
4385 | }; | |
4386 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
4387 | ||
4388 | /* PCI Device API Driver */ | |
4389 | static struct pci_driver e1000_driver = { | |
4390 | .name = e1000e_driver_name, | |
4391 | .id_table = e1000_pci_tbl, | |
4392 | .probe = e1000_probe, | |
4393 | .remove = __devexit_p(e1000_remove), | |
4394 | #ifdef CONFIG_PM | |
4395 | /* Power Managment Hooks */ | |
4396 | .suspend = e1000_suspend, | |
4397 | .resume = e1000_resume, | |
4398 | #endif | |
4399 | .shutdown = e1000_shutdown, | |
4400 | .err_handler = &e1000_err_handler | |
4401 | }; | |
4402 | ||
4403 | /** | |
4404 | * e1000_init_module - Driver Registration Routine | |
4405 | * | |
4406 | * e1000_init_module is the first routine called when the driver is | |
4407 | * loaded. All it does is register with the PCI subsystem. | |
4408 | **/ | |
4409 | static int __init e1000_init_module(void) | |
4410 | { | |
4411 | int ret; | |
4412 | printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n", | |
4413 | e1000e_driver_name, e1000e_driver_version); | |
4414 | printk(KERN_INFO "%s: Copyright (c) 1999-2007 Intel Corporation.\n", | |
4415 | e1000e_driver_name); | |
4416 | ret = pci_register_driver(&e1000_driver); | |
4417 | ||
4418 | return ret; | |
4419 | } | |
4420 | module_init(e1000_init_module); | |
4421 | ||
4422 | /** | |
4423 | * e1000_exit_module - Driver Exit Cleanup Routine | |
4424 | * | |
4425 | * e1000_exit_module is called just before the driver is removed | |
4426 | * from memory. | |
4427 | **/ | |
4428 | static void __exit e1000_exit_module(void) | |
4429 | { | |
4430 | pci_unregister_driver(&e1000_driver); | |
4431 | } | |
4432 | module_exit(e1000_exit_module); | |
4433 | ||
4434 | ||
4435 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
4436 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
4437 | MODULE_LICENSE("GPL"); | |
4438 | MODULE_VERSION(DRV_VERSION); | |
4439 | ||
4440 | /* e1000_main.c */ |