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bc7f75fa AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel PRO/1000 Linux driver | |
ad68076e | 4 | Copyright(c) 1999 - 2008 Intel Corporation. |
bc7f75fa AK |
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> | |
97ac8cae | 46 | #include <linux/pm_qos_params.h> |
bc7f75fa AK |
47 | |
48 | #include "e1000.h" | |
49 | ||
6f92a6a7 | 50 | #define DRV_VERSION "0.3.3.3-k6" |
bc7f75fa AK |
51 | char e1000e_driver_name[] = "e1000e"; |
52 | const char e1000e_driver_version[] = DRV_VERSION; | |
53 | ||
54 | static const struct e1000_info *e1000_info_tbl[] = { | |
55 | [board_82571] = &e1000_82571_info, | |
56 | [board_82572] = &e1000_82572_info, | |
57 | [board_82573] = &e1000_82573_info, | |
4662e82b | 58 | [board_82574] = &e1000_82574_info, |
bc7f75fa AK |
59 | [board_80003es2lan] = &e1000_es2_info, |
60 | [board_ich8lan] = &e1000_ich8_info, | |
61 | [board_ich9lan] = &e1000_ich9_info, | |
f4187b56 | 62 | [board_ich10lan] = &e1000_ich10_info, |
bc7f75fa AK |
63 | }; |
64 | ||
65 | #ifdef DEBUG | |
66 | /** | |
67 | * e1000_get_hw_dev_name - return device name string | |
68 | * used by hardware layer to print debugging information | |
69 | **/ | |
70 | char *e1000e_get_hw_dev_name(struct e1000_hw *hw) | |
71 | { | |
589c085f | 72 | return hw->adapter->netdev->name; |
bc7f75fa AK |
73 | } |
74 | #endif | |
75 | ||
76 | /** | |
77 | * e1000_desc_unused - calculate if we have unused descriptors | |
78 | **/ | |
79 | static int e1000_desc_unused(struct e1000_ring *ring) | |
80 | { | |
81 | if (ring->next_to_clean > ring->next_to_use) | |
82 | return ring->next_to_clean - ring->next_to_use - 1; | |
83 | ||
84 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
85 | } | |
86 | ||
87 | /** | |
ad68076e | 88 | * e1000_receive_skb - helper function to handle Rx indications |
bc7f75fa AK |
89 | * @adapter: board private structure |
90 | * @status: descriptor status field as written by hardware | |
91 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
92 | * @skb: pointer to sk_buff to be indicated to stack | |
93 | **/ | |
94 | static void e1000_receive_skb(struct e1000_adapter *adapter, | |
95 | struct net_device *netdev, | |
96 | struct sk_buff *skb, | |
a39fe742 | 97 | u8 status, __le16 vlan) |
bc7f75fa AK |
98 | { |
99 | skb->protocol = eth_type_trans(skb, netdev); | |
100 | ||
101 | if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) | |
102 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
38b22195 | 103 | le16_to_cpu(vlan)); |
bc7f75fa AK |
104 | else |
105 | netif_receive_skb(skb); | |
bc7f75fa AK |
106 | } |
107 | ||
108 | /** | |
109 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
110 | * @adapter: board private structure | |
111 | * @status_err: receive descriptor status and error fields | |
112 | * @csum: receive descriptor csum field | |
113 | * @sk_buff: socket buffer with received data | |
114 | **/ | |
115 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, | |
116 | u32 csum, struct sk_buff *skb) | |
117 | { | |
118 | u16 status = (u16)status_err; | |
119 | u8 errors = (u8)(status_err >> 24); | |
120 | skb->ip_summed = CHECKSUM_NONE; | |
121 | ||
122 | /* Ignore Checksum bit is set */ | |
123 | if (status & E1000_RXD_STAT_IXSM) | |
124 | return; | |
125 | /* TCP/UDP checksum error bit is set */ | |
126 | if (errors & E1000_RXD_ERR_TCPE) { | |
127 | /* let the stack verify checksum errors */ | |
128 | adapter->hw_csum_err++; | |
129 | return; | |
130 | } | |
131 | ||
132 | /* TCP/UDP Checksum has not been calculated */ | |
133 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
134 | return; | |
135 | ||
136 | /* It must be a TCP or UDP packet with a valid checksum */ | |
137 | if (status & E1000_RXD_STAT_TCPCS) { | |
138 | /* TCP checksum is good */ | |
139 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
140 | } else { | |
ad68076e BA |
141 | /* |
142 | * IP fragment with UDP payload | |
143 | * Hardware complements the payload checksum, so we undo it | |
bc7f75fa AK |
144 | * and then put the value in host order for further stack use. |
145 | */ | |
a39fe742 AV |
146 | __sum16 sum = (__force __sum16)htons(csum); |
147 | skb->csum = csum_unfold(~sum); | |
bc7f75fa AK |
148 | skb->ip_summed = CHECKSUM_COMPLETE; |
149 | } | |
150 | adapter->hw_csum_good++; | |
151 | } | |
152 | ||
153 | /** | |
154 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
155 | * @adapter: address of board private structure | |
156 | **/ | |
157 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, | |
158 | int cleaned_count) | |
159 | { | |
160 | struct net_device *netdev = adapter->netdev; | |
161 | struct pci_dev *pdev = adapter->pdev; | |
162 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
163 | struct e1000_rx_desc *rx_desc; | |
164 | struct e1000_buffer *buffer_info; | |
165 | struct sk_buff *skb; | |
166 | unsigned int i; | |
167 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
168 | ||
169 | i = rx_ring->next_to_use; | |
170 | buffer_info = &rx_ring->buffer_info[i]; | |
171 | ||
172 | while (cleaned_count--) { | |
173 | skb = buffer_info->skb; | |
174 | if (skb) { | |
175 | skb_trim(skb, 0); | |
176 | goto map_skb; | |
177 | } | |
178 | ||
179 | skb = netdev_alloc_skb(netdev, bufsz); | |
180 | if (!skb) { | |
181 | /* Better luck next round */ | |
182 | adapter->alloc_rx_buff_failed++; | |
183 | break; | |
184 | } | |
185 | ||
ad68076e BA |
186 | /* |
187 | * Make buffer alignment 2 beyond a 16 byte boundary | |
bc7f75fa AK |
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); | |
8d8bb39b | 198 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) { |
bc7f75fa AK |
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 | ||
ad68076e BA |
218 | /* |
219 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
220 | * know there are new descriptors to fetch. (Only |
221 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
222 | * such as IA-64). |
223 | */ | |
bc7f75fa AK |
224 | wmb(); |
225 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
226 | } | |
227 | } | |
228 | ||
229 | /** | |
230 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
231 | * @adapter: address of board private structure | |
232 | **/ | |
233 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, | |
234 | int cleaned_count) | |
235 | { | |
236 | struct net_device *netdev = adapter->netdev; | |
237 | struct pci_dev *pdev = adapter->pdev; | |
238 | union e1000_rx_desc_packet_split *rx_desc; | |
239 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
240 | struct e1000_buffer *buffer_info; | |
241 | struct e1000_ps_page *ps_page; | |
242 | struct sk_buff *skb; | |
243 | unsigned int i, j; | |
244 | ||
245 | i = rx_ring->next_to_use; | |
246 | buffer_info = &rx_ring->buffer_info[i]; | |
247 | ||
248 | while (cleaned_count--) { | |
249 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
250 | ||
251 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 AK |
252 | ps_page = &buffer_info->ps_pages[j]; |
253 | if (j >= adapter->rx_ps_pages) { | |
254 | /* all unused desc entries get hw null ptr */ | |
a39fe742 | 255 | rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
47f44e40 AK |
256 | continue; |
257 | } | |
258 | if (!ps_page->page) { | |
259 | ps_page->page = alloc_page(GFP_ATOMIC); | |
bc7f75fa | 260 | if (!ps_page->page) { |
47f44e40 AK |
261 | adapter->alloc_rx_buff_failed++; |
262 | goto no_buffers; | |
263 | } | |
264 | ps_page->dma = pci_map_page(pdev, | |
265 | ps_page->page, | |
266 | 0, PAGE_SIZE, | |
267 | PCI_DMA_FROMDEVICE); | |
8d8bb39b | 268 | if (pci_dma_mapping_error(pdev, ps_page->dma)) { |
47f44e40 AK |
269 | dev_err(&adapter->pdev->dev, |
270 | "RX DMA page map failed\n"); | |
271 | adapter->rx_dma_failed++; | |
272 | goto no_buffers; | |
bc7f75fa | 273 | } |
bc7f75fa | 274 | } |
47f44e40 AK |
275 | /* |
276 | * Refresh the desc even if buffer_addrs | |
277 | * didn't change because each write-back | |
278 | * erases this info. | |
279 | */ | |
280 | rx_desc->read.buffer_addr[j+1] = | |
281 | cpu_to_le64(ps_page->dma); | |
bc7f75fa AK |
282 | } |
283 | ||
284 | skb = netdev_alloc_skb(netdev, | |
285 | adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
286 | ||
287 | if (!skb) { | |
288 | adapter->alloc_rx_buff_failed++; | |
289 | break; | |
290 | } | |
291 | ||
ad68076e BA |
292 | /* |
293 | * Make buffer alignment 2 beyond a 16 byte boundary | |
bc7f75fa AK |
294 | * this will result in a 16 byte aligned IP header after |
295 | * the 14 byte MAC header is removed | |
296 | */ | |
297 | skb_reserve(skb, NET_IP_ALIGN); | |
298 | ||
299 | buffer_info->skb = skb; | |
300 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
301 | adapter->rx_ps_bsize0, | |
302 | PCI_DMA_FROMDEVICE); | |
8d8bb39b | 303 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) { |
bc7f75fa AK |
304 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
305 | adapter->rx_dma_failed++; | |
306 | /* cleanup skb */ | |
307 | dev_kfree_skb_any(skb); | |
308 | buffer_info->skb = NULL; | |
309 | break; | |
310 | } | |
311 | ||
312 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
313 | ||
314 | i++; | |
315 | if (i == rx_ring->count) | |
316 | i = 0; | |
317 | buffer_info = &rx_ring->buffer_info[i]; | |
318 | } | |
319 | ||
320 | no_buffers: | |
321 | if (rx_ring->next_to_use != i) { | |
322 | rx_ring->next_to_use = i; | |
323 | ||
324 | if (!(i--)) | |
325 | i = (rx_ring->count - 1); | |
326 | ||
ad68076e BA |
327 | /* |
328 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
329 | * know there are new descriptors to fetch. (Only |
330 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
331 | * such as IA-64). |
332 | */ | |
bc7f75fa | 333 | wmb(); |
ad68076e BA |
334 | /* |
335 | * Hardware increments by 16 bytes, but packet split | |
bc7f75fa AK |
336 | * descriptors are 32 bytes...so we increment tail |
337 | * twice as much. | |
338 | */ | |
339 | writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); | |
340 | } | |
341 | } | |
342 | ||
97ac8cae BA |
343 | /** |
344 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
345 | * @adapter: address of board private structure | |
346 | * @rx_ring: pointer to receive ring structure | |
347 | * @cleaned_count: number of buffers to allocate this pass | |
348 | **/ | |
349 | ||
350 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
351 | int cleaned_count) | |
352 | { | |
353 | struct net_device *netdev = adapter->netdev; | |
354 | struct pci_dev *pdev = adapter->pdev; | |
355 | struct e1000_rx_desc *rx_desc; | |
356 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
357 | struct e1000_buffer *buffer_info; | |
358 | struct sk_buff *skb; | |
359 | unsigned int i; | |
360 | unsigned int bufsz = 256 - | |
361 | 16 /* for skb_reserve */ - | |
362 | NET_IP_ALIGN; | |
363 | ||
364 | i = rx_ring->next_to_use; | |
365 | buffer_info = &rx_ring->buffer_info[i]; | |
366 | ||
367 | while (cleaned_count--) { | |
368 | skb = buffer_info->skb; | |
369 | if (skb) { | |
370 | skb_trim(skb, 0); | |
371 | goto check_page; | |
372 | } | |
373 | ||
374 | skb = netdev_alloc_skb(netdev, bufsz); | |
375 | if (unlikely(!skb)) { | |
376 | /* Better luck next round */ | |
377 | adapter->alloc_rx_buff_failed++; | |
378 | break; | |
379 | } | |
380 | ||
381 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
382 | * this will result in a 16 byte aligned IP header after | |
383 | * the 14 byte MAC header is removed | |
384 | */ | |
385 | skb_reserve(skb, NET_IP_ALIGN); | |
386 | ||
387 | buffer_info->skb = skb; | |
388 | check_page: | |
389 | /* allocate a new page if necessary */ | |
390 | if (!buffer_info->page) { | |
391 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
392 | if (unlikely(!buffer_info->page)) { | |
393 | adapter->alloc_rx_buff_failed++; | |
394 | break; | |
395 | } | |
396 | } | |
397 | ||
398 | if (!buffer_info->dma) | |
399 | buffer_info->dma = pci_map_page(pdev, | |
400 | buffer_info->page, 0, | |
401 | PAGE_SIZE, | |
402 | PCI_DMA_FROMDEVICE); | |
403 | ||
404 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
405 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
406 | ||
407 | if (unlikely(++i == rx_ring->count)) | |
408 | i = 0; | |
409 | buffer_info = &rx_ring->buffer_info[i]; | |
410 | } | |
411 | ||
412 | if (likely(rx_ring->next_to_use != i)) { | |
413 | rx_ring->next_to_use = i; | |
414 | if (unlikely(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 | ||
bc7f75fa AK |
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 */ | |
44defeb3 JK |
487 | e_dbg("%s: Receive packet consumed multiple buffers\n", |
488 | netdev->name); | |
bc7f75fa AK |
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 | ||
eb7c3adb JK |
500 | /* adjust length to remove Ethernet CRC */ |
501 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
502 | length -= 4; | |
503 | ||
bc7f75fa AK |
504 | total_rx_bytes += length; |
505 | total_rx_packets++; | |
506 | ||
ad68076e BA |
507 | /* |
508 | * code added for copybreak, this should improve | |
bc7f75fa | 509 | * performance for small packets with large amounts |
ad68076e BA |
510 | * of reassembly being done in the stack |
511 | */ | |
bc7f75fa AK |
512 | if (length < copybreak) { |
513 | struct sk_buff *new_skb = | |
514 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); | |
515 | if (new_skb) { | |
516 | skb_reserve(new_skb, NET_IP_ALIGN); | |
808ff676 BA |
517 | skb_copy_to_linear_data_offset(new_skb, |
518 | -NET_IP_ALIGN, | |
519 | (skb->data - | |
520 | NET_IP_ALIGN), | |
521 | (length + | |
522 | NET_IP_ALIGN)); | |
bc7f75fa AK |
523 | /* save the skb in buffer_info as good */ |
524 | buffer_info->skb = skb; | |
525 | skb = new_skb; | |
526 | } | |
527 | /* else just continue with the old one */ | |
528 | } | |
529 | /* end copybreak code */ | |
530 | skb_put(skb, length); | |
531 | ||
532 | /* Receive Checksum Offload */ | |
533 | e1000_rx_checksum(adapter, | |
534 | (u32)(status) | | |
535 | ((u32)(rx_desc->errors) << 24), | |
536 | le16_to_cpu(rx_desc->csum), skb); | |
537 | ||
538 | e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); | |
539 | ||
540 | next_desc: | |
541 | rx_desc->status = 0; | |
542 | ||
543 | /* return some buffers to hardware, one at a time is too slow */ | |
544 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
545 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
546 | cleaned_count = 0; | |
547 | } | |
548 | ||
549 | /* use prefetched values */ | |
550 | rx_desc = next_rxd; | |
551 | buffer_info = next_buffer; | |
552 | } | |
553 | rx_ring->next_to_clean = i; | |
554 | ||
555 | cleaned_count = e1000_desc_unused(rx_ring); | |
556 | if (cleaned_count) | |
557 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
558 | ||
bc7f75fa | 559 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 560 | adapter->total_rx_packets += total_rx_packets; |
41988692 | 561 | adapter->net_stats.rx_bytes += total_rx_bytes; |
7c25769f | 562 | adapter->net_stats.rx_packets += total_rx_packets; |
bc7f75fa AK |
563 | return cleaned; |
564 | } | |
565 | ||
bc7f75fa AK |
566 | static void e1000_put_txbuf(struct e1000_adapter *adapter, |
567 | struct e1000_buffer *buffer_info) | |
568 | { | |
569 | if (buffer_info->dma) { | |
570 | pci_unmap_page(adapter->pdev, buffer_info->dma, | |
571 | buffer_info->length, PCI_DMA_TODEVICE); | |
572 | buffer_info->dma = 0; | |
573 | } | |
574 | if (buffer_info->skb) { | |
575 | dev_kfree_skb_any(buffer_info->skb); | |
576 | buffer_info->skb = NULL; | |
577 | } | |
578 | } | |
579 | ||
580 | static void e1000_print_tx_hang(struct e1000_adapter *adapter) | |
581 | { | |
582 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
583 | unsigned int i = tx_ring->next_to_clean; | |
584 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
585 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
bc7f75fa AK |
586 | |
587 | /* detected Tx unit hang */ | |
44defeb3 JK |
588 | e_err("Detected Tx Unit Hang:\n" |
589 | " TDH <%x>\n" | |
590 | " TDT <%x>\n" | |
591 | " next_to_use <%x>\n" | |
592 | " next_to_clean <%x>\n" | |
593 | "buffer_info[next_to_clean]:\n" | |
594 | " time_stamp <%lx>\n" | |
595 | " next_to_watch <%x>\n" | |
596 | " jiffies <%lx>\n" | |
597 | " next_to_watch.status <%x>\n", | |
598 | readl(adapter->hw.hw_addr + tx_ring->head), | |
599 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
600 | tx_ring->next_to_use, | |
601 | tx_ring->next_to_clean, | |
602 | tx_ring->buffer_info[eop].time_stamp, | |
603 | eop, | |
604 | jiffies, | |
605 | eop_desc->upper.fields.status); | |
bc7f75fa AK |
606 | } |
607 | ||
608 | /** | |
609 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
610 | * @adapter: board private structure | |
611 | * | |
612 | * the return value indicates whether actual cleaning was done, there | |
613 | * is no guarantee that everything was cleaned | |
614 | **/ | |
615 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
616 | { | |
617 | struct net_device *netdev = adapter->netdev; | |
618 | struct e1000_hw *hw = &adapter->hw; | |
619 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
620 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
621 | struct e1000_buffer *buffer_info; | |
622 | unsigned int i, eop; | |
623 | unsigned int count = 0; | |
624 | bool cleaned = 0; | |
625 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; | |
626 | ||
627 | i = tx_ring->next_to_clean; | |
628 | eop = tx_ring->buffer_info[i].next_to_watch; | |
629 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
630 | ||
631 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { | |
632 | for (cleaned = 0; !cleaned; ) { | |
633 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
634 | buffer_info = &tx_ring->buffer_info[i]; | |
635 | cleaned = (i == eop); | |
636 | ||
637 | if (cleaned) { | |
638 | struct sk_buff *skb = buffer_info->skb; | |
639 | unsigned int segs, bytecount; | |
640 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
641 | /* multiply data chunks by size of headers */ | |
642 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
643 | skb->len; | |
644 | total_tx_packets += segs; | |
645 | total_tx_bytes += bytecount; | |
646 | } | |
647 | ||
648 | e1000_put_txbuf(adapter, buffer_info); | |
649 | tx_desc->upper.data = 0; | |
650 | ||
651 | i++; | |
652 | if (i == tx_ring->count) | |
653 | i = 0; | |
654 | } | |
655 | ||
656 | eop = tx_ring->buffer_info[i].next_to_watch; | |
657 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
658 | #define E1000_TX_WEIGHT 64 | |
659 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
660 | if (count++ == E1000_TX_WEIGHT) | |
661 | break; | |
662 | } | |
663 | ||
664 | tx_ring->next_to_clean = i; | |
665 | ||
666 | #define TX_WAKE_THRESHOLD 32 | |
667 | if (cleaned && netif_carrier_ok(netdev) && | |
668 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
669 | /* Make sure that anybody stopping the queue after this | |
670 | * sees the new next_to_clean. | |
671 | */ | |
672 | smp_mb(); | |
673 | ||
674 | if (netif_queue_stopped(netdev) && | |
675 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
676 | netif_wake_queue(netdev); | |
677 | ++adapter->restart_queue; | |
678 | } | |
679 | } | |
680 | ||
681 | if (adapter->detect_tx_hung) { | |
ad68076e BA |
682 | /* |
683 | * Detect a transmit hang in hardware, this serializes the | |
684 | * check with the clearing of time_stamp and movement of i | |
685 | */ | |
bc7f75fa AK |
686 | adapter->detect_tx_hung = 0; |
687 | if (tx_ring->buffer_info[eop].dma && | |
688 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp | |
689 | + (adapter->tx_timeout_factor * HZ)) | |
ad68076e | 690 | && !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
bc7f75fa AK |
691 | e1000_print_tx_hang(adapter); |
692 | netif_stop_queue(netdev); | |
693 | } | |
694 | } | |
695 | adapter->total_tx_bytes += total_tx_bytes; | |
696 | adapter->total_tx_packets += total_tx_packets; | |
41988692 | 697 | adapter->net_stats.tx_bytes += total_tx_bytes; |
7c25769f | 698 | adapter->net_stats.tx_packets += total_tx_packets; |
bc7f75fa AK |
699 | return cleaned; |
700 | } | |
701 | ||
bc7f75fa AK |
702 | /** |
703 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
704 | * @adapter: board private structure | |
705 | * | |
706 | * the return value indicates whether actual cleaning was done, there | |
707 | * is no guarantee that everything was cleaned | |
708 | **/ | |
709 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
710 | int *work_done, int work_to_do) | |
711 | { | |
712 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; | |
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_buffer *buffer_info, *next_buffer; | |
717 | struct e1000_ps_page *ps_page; | |
718 | struct sk_buff *skb; | |
719 | unsigned int i, j; | |
720 | u32 length, staterr; | |
721 | int cleaned_count = 0; | |
722 | bool cleaned = 0; | |
723 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
724 | ||
725 | i = rx_ring->next_to_clean; | |
726 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
727 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
728 | buffer_info = &rx_ring->buffer_info[i]; | |
729 | ||
730 | while (staterr & E1000_RXD_STAT_DD) { | |
731 | if (*work_done >= work_to_do) | |
732 | break; | |
733 | (*work_done)++; | |
734 | skb = buffer_info->skb; | |
735 | ||
736 | /* in the packet split case this is header only */ | |
737 | prefetch(skb->data - NET_IP_ALIGN); | |
738 | ||
739 | i++; | |
740 | if (i == rx_ring->count) | |
741 | i = 0; | |
742 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
743 | prefetch(next_rxd); | |
744 | ||
745 | next_buffer = &rx_ring->buffer_info[i]; | |
746 | ||
747 | cleaned = 1; | |
748 | cleaned_count++; | |
749 | pci_unmap_single(pdev, buffer_info->dma, | |
750 | adapter->rx_ps_bsize0, | |
751 | PCI_DMA_FROMDEVICE); | |
752 | buffer_info->dma = 0; | |
753 | ||
754 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
44defeb3 JK |
755 | e_dbg("%s: Packet Split buffers didn't pick up the " |
756 | "full packet\n", netdev->name); | |
bc7f75fa AK |
757 | dev_kfree_skb_irq(skb); |
758 | goto next_desc; | |
759 | } | |
760 | ||
761 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
762 | dev_kfree_skb_irq(skb); | |
763 | goto next_desc; | |
764 | } | |
765 | ||
766 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
767 | ||
768 | if (!length) { | |
44defeb3 JK |
769 | e_dbg("%s: Last part of the packet spanning multiple " |
770 | "descriptors\n", netdev->name); | |
bc7f75fa AK |
771 | dev_kfree_skb_irq(skb); |
772 | goto next_desc; | |
773 | } | |
774 | ||
775 | /* Good Receive */ | |
776 | skb_put(skb, length); | |
777 | ||
778 | { | |
ad68076e BA |
779 | /* |
780 | * this looks ugly, but it seems compiler issues make it | |
781 | * more efficient than reusing j | |
782 | */ | |
bc7f75fa AK |
783 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
784 | ||
ad68076e BA |
785 | /* |
786 | * page alloc/put takes too long and effects small packet | |
787 | * throughput, so unsplit small packets and save the alloc/put | |
788 | * only valid in softirq (napi) context to call kmap_* | |
789 | */ | |
bc7f75fa AK |
790 | if (l1 && (l1 <= copybreak) && |
791 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
792 | u8 *vaddr; | |
793 | ||
47f44e40 | 794 | ps_page = &buffer_info->ps_pages[0]; |
bc7f75fa | 795 | |
ad68076e BA |
796 | /* |
797 | * there is no documentation about how to call | |
bc7f75fa | 798 | * kmap_atomic, so we can't hold the mapping |
ad68076e BA |
799 | * very long |
800 | */ | |
bc7f75fa AK |
801 | pci_dma_sync_single_for_cpu(pdev, ps_page->dma, |
802 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
803 | vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); | |
804 | memcpy(skb_tail_pointer(skb), vaddr, l1); | |
805 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
806 | pci_dma_sync_single_for_device(pdev, ps_page->dma, | |
807 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
140a7480 | 808 | |
eb7c3adb JK |
809 | /* remove the CRC */ |
810 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
811 | l1 -= 4; | |
812 | ||
bc7f75fa AK |
813 | skb_put(skb, l1); |
814 | goto copydone; | |
815 | } /* if */ | |
816 | } | |
817 | ||
818 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
819 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
820 | if (!length) | |
821 | break; | |
822 | ||
47f44e40 | 823 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
824 | pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, |
825 | PCI_DMA_FROMDEVICE); | |
826 | ps_page->dma = 0; | |
827 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
828 | ps_page->page = NULL; | |
829 | skb->len += length; | |
830 | skb->data_len += length; | |
831 | skb->truesize += length; | |
832 | } | |
833 | ||
eb7c3adb JK |
834 | /* strip the ethernet crc, problem is we're using pages now so |
835 | * this whole operation can get a little cpu intensive | |
836 | */ | |
837 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
838 | pskb_trim(skb, skb->len - 4); | |
839 | ||
bc7f75fa AK |
840 | copydone: |
841 | total_rx_bytes += skb->len; | |
842 | total_rx_packets++; | |
843 | ||
844 | e1000_rx_checksum(adapter, staterr, le16_to_cpu( | |
845 | rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); | |
846 | ||
847 | if (rx_desc->wb.upper.header_status & | |
848 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) | |
849 | adapter->rx_hdr_split++; | |
850 | ||
851 | e1000_receive_skb(adapter, netdev, skb, | |
852 | staterr, rx_desc->wb.middle.vlan); | |
853 | ||
854 | next_desc: | |
855 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
856 | buffer_info->skb = NULL; | |
857 | ||
858 | /* return some buffers to hardware, one at a time is too slow */ | |
859 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
860 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
861 | cleaned_count = 0; | |
862 | } | |
863 | ||
864 | /* use prefetched values */ | |
865 | rx_desc = next_rxd; | |
866 | buffer_info = next_buffer; | |
867 | ||
868 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
869 | } | |
870 | rx_ring->next_to_clean = i; | |
871 | ||
872 | cleaned_count = e1000_desc_unused(rx_ring); | |
873 | if (cleaned_count) | |
874 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
875 | ||
bc7f75fa | 876 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 877 | adapter->total_rx_packets += total_rx_packets; |
41988692 | 878 | adapter->net_stats.rx_bytes += total_rx_bytes; |
7c25769f | 879 | adapter->net_stats.rx_packets += total_rx_packets; |
bc7f75fa AK |
880 | return cleaned; |
881 | } | |
882 | ||
97ac8cae BA |
883 | /** |
884 | * e1000_consume_page - helper function | |
885 | **/ | |
886 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
887 | u16 length) | |
888 | { | |
889 | bi->page = NULL; | |
890 | skb->len += length; | |
891 | skb->data_len += length; | |
892 | skb->truesize += length; | |
893 | } | |
894 | ||
895 | /** | |
896 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
897 | * @adapter: board private structure | |
898 | * | |
899 | * the return value indicates whether actual cleaning was done, there | |
900 | * is no guarantee that everything was cleaned | |
901 | **/ | |
902 | ||
903 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
904 | int *work_done, int work_to_do) | |
905 | { | |
906 | struct net_device *netdev = adapter->netdev; | |
907 | struct pci_dev *pdev = adapter->pdev; | |
908 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
909 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
910 | struct e1000_buffer *buffer_info, *next_buffer; | |
911 | u32 length; | |
912 | unsigned int i; | |
913 | int cleaned_count = 0; | |
914 | bool cleaned = false; | |
915 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
916 | ||
917 | i = rx_ring->next_to_clean; | |
918 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
919 | buffer_info = &rx_ring->buffer_info[i]; | |
920 | ||
921 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
922 | struct sk_buff *skb; | |
923 | u8 status; | |
924 | ||
925 | if (*work_done >= work_to_do) | |
926 | break; | |
927 | (*work_done)++; | |
928 | ||
929 | status = rx_desc->status; | |
930 | skb = buffer_info->skb; | |
931 | buffer_info->skb = NULL; | |
932 | ||
933 | ++i; | |
934 | if (i == rx_ring->count) | |
935 | i = 0; | |
936 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
937 | prefetch(next_rxd); | |
938 | ||
939 | next_buffer = &rx_ring->buffer_info[i]; | |
940 | ||
941 | cleaned = true; | |
942 | cleaned_count++; | |
943 | pci_unmap_page(pdev, buffer_info->dma, PAGE_SIZE, | |
944 | PCI_DMA_FROMDEVICE); | |
945 | buffer_info->dma = 0; | |
946 | ||
947 | length = le16_to_cpu(rx_desc->length); | |
948 | ||
949 | /* errors is only valid for DD + EOP descriptors */ | |
950 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
951 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
952 | /* recycle both page and skb */ | |
953 | buffer_info->skb = skb; | |
954 | /* an error means any chain goes out the window | |
955 | * too */ | |
956 | if (rx_ring->rx_skb_top) | |
957 | dev_kfree_skb(rx_ring->rx_skb_top); | |
958 | rx_ring->rx_skb_top = NULL; | |
959 | goto next_desc; | |
960 | } | |
961 | ||
962 | #define rxtop rx_ring->rx_skb_top | |
963 | if (!(status & E1000_RXD_STAT_EOP)) { | |
964 | /* this descriptor is only the beginning (or middle) */ | |
965 | if (!rxtop) { | |
966 | /* this is the beginning of a chain */ | |
967 | rxtop = skb; | |
968 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
969 | 0, length); | |
970 | } else { | |
971 | /* this is the middle of a chain */ | |
972 | skb_fill_page_desc(rxtop, | |
973 | skb_shinfo(rxtop)->nr_frags, | |
974 | buffer_info->page, 0, length); | |
975 | /* re-use the skb, only consumed the page */ | |
976 | buffer_info->skb = skb; | |
977 | } | |
978 | e1000_consume_page(buffer_info, rxtop, length); | |
979 | goto next_desc; | |
980 | } else { | |
981 | if (rxtop) { | |
982 | /* end of the chain */ | |
983 | skb_fill_page_desc(rxtop, | |
984 | skb_shinfo(rxtop)->nr_frags, | |
985 | buffer_info->page, 0, length); | |
986 | /* re-use the current skb, we only consumed the | |
987 | * page */ | |
988 | buffer_info->skb = skb; | |
989 | skb = rxtop; | |
990 | rxtop = NULL; | |
991 | e1000_consume_page(buffer_info, skb, length); | |
992 | } else { | |
993 | /* no chain, got EOP, this buf is the packet | |
994 | * copybreak to save the put_page/alloc_page */ | |
995 | if (length <= copybreak && | |
996 | skb_tailroom(skb) >= length) { | |
997 | u8 *vaddr; | |
998 | vaddr = kmap_atomic(buffer_info->page, | |
999 | KM_SKB_DATA_SOFTIRQ); | |
1000 | memcpy(skb_tail_pointer(skb), vaddr, | |
1001 | length); | |
1002 | kunmap_atomic(vaddr, | |
1003 | KM_SKB_DATA_SOFTIRQ); | |
1004 | /* re-use the page, so don't erase | |
1005 | * buffer_info->page */ | |
1006 | skb_put(skb, length); | |
1007 | } else { | |
1008 | skb_fill_page_desc(skb, 0, | |
1009 | buffer_info->page, 0, | |
1010 | length); | |
1011 | e1000_consume_page(buffer_info, skb, | |
1012 | length); | |
1013 | } | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
1018 | e1000_rx_checksum(adapter, | |
1019 | (u32)(status) | | |
1020 | ((u32)(rx_desc->errors) << 24), | |
1021 | le16_to_cpu(rx_desc->csum), skb); | |
1022 | ||
1023 | /* probably a little skewed due to removing CRC */ | |
1024 | total_rx_bytes += skb->len; | |
1025 | total_rx_packets++; | |
1026 | ||
1027 | /* eth type trans needs skb->data to point to something */ | |
1028 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
44defeb3 | 1029 | e_err("pskb_may_pull failed.\n"); |
97ac8cae BA |
1030 | dev_kfree_skb(skb); |
1031 | goto next_desc; | |
1032 | } | |
1033 | ||
1034 | e1000_receive_skb(adapter, netdev, skb, status, | |
1035 | rx_desc->special); | |
1036 | ||
1037 | next_desc: | |
1038 | rx_desc->status = 0; | |
1039 | ||
1040 | /* return some buffers to hardware, one at a time is too slow */ | |
1041 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
1042 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1043 | cleaned_count = 0; | |
1044 | } | |
1045 | ||
1046 | /* use prefetched values */ | |
1047 | rx_desc = next_rxd; | |
1048 | buffer_info = next_buffer; | |
1049 | } | |
1050 | rx_ring->next_to_clean = i; | |
1051 | ||
1052 | cleaned_count = e1000_desc_unused(rx_ring); | |
1053 | if (cleaned_count) | |
1054 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1055 | ||
1056 | adapter->total_rx_bytes += total_rx_bytes; | |
1057 | adapter->total_rx_packets += total_rx_packets; | |
1058 | adapter->net_stats.rx_bytes += total_rx_bytes; | |
1059 | adapter->net_stats.rx_packets += total_rx_packets; | |
1060 | return cleaned; | |
1061 | } | |
1062 | ||
bc7f75fa AK |
1063 | /** |
1064 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1065 | * @adapter: board private structure | |
1066 | **/ | |
1067 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1068 | { | |
1069 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1070 | struct e1000_buffer *buffer_info; | |
1071 | struct e1000_ps_page *ps_page; | |
1072 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1073 | unsigned int i, j; |
1074 | ||
1075 | /* Free all the Rx ring sk_buffs */ | |
1076 | for (i = 0; i < rx_ring->count; i++) { | |
1077 | buffer_info = &rx_ring->buffer_info[i]; | |
1078 | if (buffer_info->dma) { | |
1079 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
1080 | pci_unmap_single(pdev, buffer_info->dma, | |
1081 | adapter->rx_buffer_len, | |
1082 | PCI_DMA_FROMDEVICE); | |
97ac8cae BA |
1083 | else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
1084 | pci_unmap_page(pdev, buffer_info->dma, | |
1085 | PAGE_SIZE, | |
1086 | PCI_DMA_FROMDEVICE); | |
bc7f75fa AK |
1087 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
1088 | pci_unmap_single(pdev, buffer_info->dma, | |
1089 | adapter->rx_ps_bsize0, | |
1090 | PCI_DMA_FROMDEVICE); | |
1091 | buffer_info->dma = 0; | |
1092 | } | |
1093 | ||
97ac8cae BA |
1094 | if (buffer_info->page) { |
1095 | put_page(buffer_info->page); | |
1096 | buffer_info->page = NULL; | |
1097 | } | |
1098 | ||
bc7f75fa AK |
1099 | if (buffer_info->skb) { |
1100 | dev_kfree_skb(buffer_info->skb); | |
1101 | buffer_info->skb = NULL; | |
1102 | } | |
1103 | ||
1104 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 | 1105 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
1106 | if (!ps_page->page) |
1107 | break; | |
1108 | pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, | |
1109 | PCI_DMA_FROMDEVICE); | |
1110 | ps_page->dma = 0; | |
1111 | put_page(ps_page->page); | |
1112 | ps_page->page = NULL; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | /* there also may be some cached data from a chained receive */ | |
1117 | if (rx_ring->rx_skb_top) { | |
1118 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1119 | rx_ring->rx_skb_top = NULL; | |
1120 | } | |
1121 | ||
bc7f75fa AK |
1122 | /* Zero out the descriptor ring */ |
1123 | memset(rx_ring->desc, 0, rx_ring->size); | |
1124 | ||
1125 | rx_ring->next_to_clean = 0; | |
1126 | rx_ring->next_to_use = 0; | |
1127 | ||
1128 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1129 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1130 | } | |
1131 | ||
a8f88ff5 JB |
1132 | static void e1000e_downshift_workaround(struct work_struct *work) |
1133 | { | |
1134 | struct e1000_adapter *adapter = container_of(work, | |
1135 | struct e1000_adapter, downshift_task); | |
1136 | ||
1137 | e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); | |
1138 | } | |
1139 | ||
bc7f75fa AK |
1140 | /** |
1141 | * e1000_intr_msi - Interrupt Handler | |
1142 | * @irq: interrupt number | |
1143 | * @data: pointer to a network interface device structure | |
1144 | **/ | |
1145 | static irqreturn_t e1000_intr_msi(int irq, void *data) | |
1146 | { | |
1147 | struct net_device *netdev = data; | |
1148 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1149 | struct e1000_hw *hw = &adapter->hw; | |
1150 | u32 icr = er32(ICR); | |
1151 | ||
ad68076e BA |
1152 | /* |
1153 | * read ICR disables interrupts using IAM | |
1154 | */ | |
bc7f75fa AK |
1155 | |
1156 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { | |
1157 | hw->mac.get_link_status = 1; | |
ad68076e BA |
1158 | /* |
1159 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1160 | * disconnect (LSC) before accessing any PHY registers | |
1161 | */ | |
bc7f75fa AK |
1162 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1163 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1164 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1165 | |
ad68076e BA |
1166 | /* |
1167 | * 80003ES2LAN workaround-- For packet buffer work-around on | |
bc7f75fa | 1168 | * link down event; disable receives here in the ISR and reset |
ad68076e BA |
1169 | * adapter in watchdog |
1170 | */ | |
bc7f75fa AK |
1171 | if (netif_carrier_ok(netdev) && |
1172 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1173 | /* disable receives */ | |
1174 | u32 rctl = er32(RCTL); | |
1175 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1176 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1177 | } |
1178 | /* guard against interrupt when we're going down */ | |
1179 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1180 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1181 | } | |
1182 | ||
1183 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
1184 | adapter->total_tx_bytes = 0; | |
1185 | adapter->total_tx_packets = 0; | |
1186 | adapter->total_rx_bytes = 0; | |
1187 | adapter->total_rx_packets = 0; | |
1188 | __netif_rx_schedule(netdev, &adapter->napi); | |
bc7f75fa AK |
1189 | } |
1190 | ||
1191 | return IRQ_HANDLED; | |
1192 | } | |
1193 | ||
1194 | /** | |
1195 | * e1000_intr - Interrupt Handler | |
1196 | * @irq: interrupt number | |
1197 | * @data: pointer to a network interface device structure | |
1198 | **/ | |
1199 | static irqreturn_t e1000_intr(int irq, void *data) | |
1200 | { | |
1201 | struct net_device *netdev = data; | |
1202 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1203 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 1204 | u32 rctl, icr = er32(ICR); |
4662e82b | 1205 | |
bc7f75fa AK |
1206 | if (!icr) |
1207 | return IRQ_NONE; /* Not our interrupt */ | |
1208 | ||
ad68076e BA |
1209 | /* |
1210 | * IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
1211 | * not set, then the adapter didn't send an interrupt | |
1212 | */ | |
bc7f75fa AK |
1213 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
1214 | return IRQ_NONE; | |
1215 | ||
ad68076e BA |
1216 | /* |
1217 | * Interrupt Auto-Mask...upon reading ICR, | |
1218 | * interrupts are masked. No need for the | |
1219 | * IMC write | |
1220 | */ | |
bc7f75fa AK |
1221 | |
1222 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { | |
1223 | hw->mac.get_link_status = 1; | |
ad68076e BA |
1224 | /* |
1225 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1226 | * disconnect (LSC) before accessing any PHY registers | |
1227 | */ | |
bc7f75fa AK |
1228 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1229 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1230 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1231 | |
ad68076e BA |
1232 | /* |
1233 | * 80003ES2LAN workaround-- | |
bc7f75fa AK |
1234 | * For packet buffer work-around on link down event; |
1235 | * disable receives here in the ISR and | |
1236 | * reset adapter in watchdog | |
1237 | */ | |
1238 | if (netif_carrier_ok(netdev) && | |
1239 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1240 | /* disable receives */ | |
1241 | rctl = er32(RCTL); | |
1242 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1243 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1244 | } |
1245 | /* guard against interrupt when we're going down */ | |
1246 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1247 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1248 | } | |
1249 | ||
1250 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
1251 | adapter->total_tx_bytes = 0; | |
1252 | adapter->total_tx_packets = 0; | |
1253 | adapter->total_rx_bytes = 0; | |
1254 | adapter->total_rx_packets = 0; | |
1255 | __netif_rx_schedule(netdev, &adapter->napi); | |
bc7f75fa AK |
1256 | } |
1257 | ||
1258 | return IRQ_HANDLED; | |
1259 | } | |
1260 | ||
4662e82b BA |
1261 | static irqreturn_t e1000_msix_other(int irq, void *data) |
1262 | { | |
1263 | struct net_device *netdev = data; | |
1264 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1265 | struct e1000_hw *hw = &adapter->hw; | |
1266 | u32 icr = er32(ICR); | |
1267 | ||
1268 | if (!(icr & E1000_ICR_INT_ASSERTED)) { | |
1269 | ew32(IMS, E1000_IMS_OTHER); | |
1270 | return IRQ_NONE; | |
1271 | } | |
1272 | ||
1273 | if (icr & adapter->eiac_mask) | |
1274 | ew32(ICS, (icr & adapter->eiac_mask)); | |
1275 | ||
1276 | if (icr & E1000_ICR_OTHER) { | |
1277 | if (!(icr & E1000_ICR_LSC)) | |
1278 | goto no_link_interrupt; | |
1279 | hw->mac.get_link_status = 1; | |
1280 | /* guard against interrupt when we're going down */ | |
1281 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1282 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1283 | } | |
1284 | ||
1285 | no_link_interrupt: | |
1286 | ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); | |
1287 | ||
1288 | return IRQ_HANDLED; | |
1289 | } | |
1290 | ||
1291 | ||
1292 | static irqreturn_t e1000_intr_msix_tx(int irq, void *data) | |
1293 | { | |
1294 | struct net_device *netdev = data; | |
1295 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1296 | struct e1000_hw *hw = &adapter->hw; | |
1297 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1298 | ||
1299 | ||
1300 | adapter->total_tx_bytes = 0; | |
1301 | adapter->total_tx_packets = 0; | |
1302 | ||
1303 | if (!e1000_clean_tx_irq(adapter)) | |
1304 | /* Ring was not completely cleaned, so fire another interrupt */ | |
1305 | ew32(ICS, tx_ring->ims_val); | |
1306 | ||
1307 | return IRQ_HANDLED; | |
1308 | } | |
1309 | ||
1310 | static irqreturn_t e1000_intr_msix_rx(int irq, void *data) | |
1311 | { | |
1312 | struct net_device *netdev = data; | |
1313 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1314 | ||
1315 | /* Write the ITR value calculated at the end of the | |
1316 | * previous interrupt. | |
1317 | */ | |
1318 | if (adapter->rx_ring->set_itr) { | |
1319 | writel(1000000000 / (adapter->rx_ring->itr_val * 256), | |
1320 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
1321 | adapter->rx_ring->set_itr = 0; | |
1322 | } | |
1323 | ||
1324 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
1325 | adapter->total_rx_bytes = 0; | |
1326 | adapter->total_rx_packets = 0; | |
1327 | __netif_rx_schedule(netdev, &adapter->napi); | |
1328 | } | |
1329 | return IRQ_HANDLED; | |
1330 | } | |
1331 | ||
1332 | /** | |
1333 | * e1000_configure_msix - Configure MSI-X hardware | |
1334 | * | |
1335 | * e1000_configure_msix sets up the hardware to properly | |
1336 | * generate MSI-X interrupts. | |
1337 | **/ | |
1338 | static void e1000_configure_msix(struct e1000_adapter *adapter) | |
1339 | { | |
1340 | struct e1000_hw *hw = &adapter->hw; | |
1341 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1342 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1343 | int vector = 0; | |
1344 | u32 ctrl_ext, ivar = 0; | |
1345 | ||
1346 | adapter->eiac_mask = 0; | |
1347 | ||
1348 | /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ | |
1349 | if (hw->mac.type == e1000_82574) { | |
1350 | u32 rfctl = er32(RFCTL); | |
1351 | rfctl |= E1000_RFCTL_ACK_DIS; | |
1352 | ew32(RFCTL, rfctl); | |
1353 | } | |
1354 | ||
1355 | #define E1000_IVAR_INT_ALLOC_VALID 0x8 | |
1356 | /* Configure Rx vector */ | |
1357 | rx_ring->ims_val = E1000_IMS_RXQ0; | |
1358 | adapter->eiac_mask |= rx_ring->ims_val; | |
1359 | if (rx_ring->itr_val) | |
1360 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1361 | hw->hw_addr + rx_ring->itr_register); | |
1362 | else | |
1363 | writel(1, hw->hw_addr + rx_ring->itr_register); | |
1364 | ivar = E1000_IVAR_INT_ALLOC_VALID | vector; | |
1365 | ||
1366 | /* Configure Tx vector */ | |
1367 | tx_ring->ims_val = E1000_IMS_TXQ0; | |
1368 | vector++; | |
1369 | if (tx_ring->itr_val) | |
1370 | writel(1000000000 / (tx_ring->itr_val * 256), | |
1371 | hw->hw_addr + tx_ring->itr_register); | |
1372 | else | |
1373 | writel(1, hw->hw_addr + tx_ring->itr_register); | |
1374 | adapter->eiac_mask |= tx_ring->ims_val; | |
1375 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); | |
1376 | ||
1377 | /* set vector for Other Causes, e.g. link changes */ | |
1378 | vector++; | |
1379 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); | |
1380 | if (rx_ring->itr_val) | |
1381 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1382 | hw->hw_addr + E1000_EITR_82574(vector)); | |
1383 | else | |
1384 | writel(1, hw->hw_addr + E1000_EITR_82574(vector)); | |
1385 | ||
1386 | /* Cause Tx interrupts on every write back */ | |
1387 | ivar |= (1 << 31); | |
1388 | ||
1389 | ew32(IVAR, ivar); | |
1390 | ||
1391 | /* enable MSI-X PBA support */ | |
1392 | ctrl_ext = er32(CTRL_EXT); | |
1393 | ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; | |
1394 | ||
1395 | /* Auto-Mask Other interrupts upon ICR read */ | |
1396 | #define E1000_EIAC_MASK_82574 0x01F00000 | |
1397 | ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); | |
1398 | ctrl_ext |= E1000_CTRL_EXT_EIAME; | |
1399 | ew32(CTRL_EXT, ctrl_ext); | |
1400 | e1e_flush(); | |
1401 | } | |
1402 | ||
1403 | void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) | |
1404 | { | |
1405 | if (adapter->msix_entries) { | |
1406 | pci_disable_msix(adapter->pdev); | |
1407 | kfree(adapter->msix_entries); | |
1408 | adapter->msix_entries = NULL; | |
1409 | } else if (adapter->flags & FLAG_MSI_ENABLED) { | |
1410 | pci_disable_msi(adapter->pdev); | |
1411 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
1412 | } | |
1413 | ||
1414 | return; | |
1415 | } | |
1416 | ||
1417 | /** | |
1418 | * e1000e_set_interrupt_capability - set MSI or MSI-X if supported | |
1419 | * | |
1420 | * Attempt to configure interrupts using the best available | |
1421 | * capabilities of the hardware and kernel. | |
1422 | **/ | |
1423 | void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) | |
1424 | { | |
1425 | int err; | |
1426 | int numvecs, i; | |
1427 | ||
1428 | ||
1429 | switch (adapter->int_mode) { | |
1430 | case E1000E_INT_MODE_MSIX: | |
1431 | if (adapter->flags & FLAG_HAS_MSIX) { | |
1432 | numvecs = 3; /* RxQ0, TxQ0 and other */ | |
1433 | adapter->msix_entries = kcalloc(numvecs, | |
1434 | sizeof(struct msix_entry), | |
1435 | GFP_KERNEL); | |
1436 | if (adapter->msix_entries) { | |
1437 | for (i = 0; i < numvecs; i++) | |
1438 | adapter->msix_entries[i].entry = i; | |
1439 | ||
1440 | err = pci_enable_msix(adapter->pdev, | |
1441 | adapter->msix_entries, | |
1442 | numvecs); | |
1443 | if (err == 0) | |
1444 | return; | |
1445 | } | |
1446 | /* MSI-X failed, so fall through and try MSI */ | |
1447 | e_err("Failed to initialize MSI-X interrupts. " | |
1448 | "Falling back to MSI interrupts.\n"); | |
1449 | e1000e_reset_interrupt_capability(adapter); | |
1450 | } | |
1451 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1452 | /* Fall through */ | |
1453 | case E1000E_INT_MODE_MSI: | |
1454 | if (!pci_enable_msi(adapter->pdev)) { | |
1455 | adapter->flags |= FLAG_MSI_ENABLED; | |
1456 | } else { | |
1457 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
1458 | e_err("Failed to initialize MSI interrupts. Falling " | |
1459 | "back to legacy interrupts.\n"); | |
1460 | } | |
1461 | /* Fall through */ | |
1462 | case E1000E_INT_MODE_LEGACY: | |
1463 | /* Don't do anything; this is the system default */ | |
1464 | break; | |
1465 | } | |
1466 | ||
1467 | return; | |
1468 | } | |
1469 | ||
1470 | /** | |
1471 | * e1000_request_msix - Initialize MSI-X interrupts | |
1472 | * | |
1473 | * e1000_request_msix allocates MSI-X vectors and requests interrupts from the | |
1474 | * kernel. | |
1475 | **/ | |
1476 | static int e1000_request_msix(struct e1000_adapter *adapter) | |
1477 | { | |
1478 | struct net_device *netdev = adapter->netdev; | |
1479 | int err = 0, vector = 0; | |
1480 | ||
1481 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
1482 | sprintf(adapter->rx_ring->name, "%s-rx0", netdev->name); | |
1483 | else | |
1484 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1485 | err = request_irq(adapter->msix_entries[vector].vector, | |
1486 | &e1000_intr_msix_rx, 0, adapter->rx_ring->name, | |
1487 | netdev); | |
1488 | if (err) | |
1489 | goto out; | |
1490 | adapter->rx_ring->itr_register = E1000_EITR_82574(vector); | |
1491 | adapter->rx_ring->itr_val = adapter->itr; | |
1492 | vector++; | |
1493 | ||
1494 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
1495 | sprintf(adapter->tx_ring->name, "%s-tx0", netdev->name); | |
1496 | else | |
1497 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1498 | err = request_irq(adapter->msix_entries[vector].vector, | |
1499 | &e1000_intr_msix_tx, 0, adapter->tx_ring->name, | |
1500 | netdev); | |
1501 | if (err) | |
1502 | goto out; | |
1503 | adapter->tx_ring->itr_register = E1000_EITR_82574(vector); | |
1504 | adapter->tx_ring->itr_val = adapter->itr; | |
1505 | vector++; | |
1506 | ||
1507 | err = request_irq(adapter->msix_entries[vector].vector, | |
1508 | &e1000_msix_other, 0, netdev->name, netdev); | |
1509 | if (err) | |
1510 | goto out; | |
1511 | ||
1512 | e1000_configure_msix(adapter); | |
1513 | return 0; | |
1514 | out: | |
1515 | return err; | |
1516 | } | |
1517 | ||
f8d59f78 BA |
1518 | /** |
1519 | * e1000_request_irq - initialize interrupts | |
1520 | * | |
1521 | * Attempts to configure interrupts using the best available | |
1522 | * capabilities of the hardware and kernel. | |
1523 | **/ | |
bc7f75fa AK |
1524 | static int e1000_request_irq(struct e1000_adapter *adapter) |
1525 | { | |
1526 | struct net_device *netdev = adapter->netdev; | |
bc7f75fa AK |
1527 | int err; |
1528 | ||
4662e82b BA |
1529 | if (adapter->msix_entries) { |
1530 | err = e1000_request_msix(adapter); | |
1531 | if (!err) | |
1532 | return err; | |
1533 | /* fall back to MSI */ | |
1534 | e1000e_reset_interrupt_capability(adapter); | |
1535 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1536 | e1000e_set_interrupt_capability(adapter); | |
bc7f75fa | 1537 | } |
4662e82b BA |
1538 | if (adapter->flags & FLAG_MSI_ENABLED) { |
1539 | err = request_irq(adapter->pdev->irq, &e1000_intr_msi, 0, | |
1540 | netdev->name, netdev); | |
1541 | if (!err) | |
1542 | return err; | |
bc7f75fa | 1543 | |
4662e82b BA |
1544 | /* fall back to legacy interrupt */ |
1545 | e1000e_reset_interrupt_capability(adapter); | |
1546 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
bc7f75fa AK |
1547 | } |
1548 | ||
4662e82b BA |
1549 | err = request_irq(adapter->pdev->irq, &e1000_intr, IRQF_SHARED, |
1550 | netdev->name, netdev); | |
1551 | if (err) | |
1552 | e_err("Unable to allocate interrupt, Error: %d\n", err); | |
1553 | ||
bc7f75fa AK |
1554 | return err; |
1555 | } | |
1556 | ||
1557 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
1558 | { | |
1559 | struct net_device *netdev = adapter->netdev; | |
1560 | ||
4662e82b BA |
1561 | if (adapter->msix_entries) { |
1562 | int vector = 0; | |
1563 | ||
1564 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1565 | vector++; | |
1566 | ||
1567 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1568 | vector++; | |
1569 | ||
1570 | /* Other Causes interrupt vector */ | |
1571 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1572 | return; | |
bc7f75fa | 1573 | } |
4662e82b BA |
1574 | |
1575 | free_irq(adapter->pdev->irq, netdev); | |
bc7f75fa AK |
1576 | } |
1577 | ||
1578 | /** | |
1579 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
1580 | **/ | |
1581 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
1582 | { | |
1583 | struct e1000_hw *hw = &adapter->hw; | |
1584 | ||
bc7f75fa | 1585 | ew32(IMC, ~0); |
4662e82b BA |
1586 | if (adapter->msix_entries) |
1587 | ew32(EIAC_82574, 0); | |
bc7f75fa AK |
1588 | e1e_flush(); |
1589 | synchronize_irq(adapter->pdev->irq); | |
1590 | } | |
1591 | ||
1592 | /** | |
1593 | * e1000_irq_enable - Enable default interrupt generation settings | |
1594 | **/ | |
1595 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
1596 | { | |
1597 | struct e1000_hw *hw = &adapter->hw; | |
1598 | ||
4662e82b BA |
1599 | if (adapter->msix_entries) { |
1600 | ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); | |
1601 | ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); | |
1602 | } else { | |
1603 | ew32(IMS, IMS_ENABLE_MASK); | |
1604 | } | |
74ef9c39 | 1605 | e1e_flush(); |
bc7f75fa AK |
1606 | } |
1607 | ||
1608 | /** | |
1609 | * e1000_get_hw_control - get control of the h/w from f/w | |
1610 | * @adapter: address of board private structure | |
1611 | * | |
489815ce | 1612 | * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1613 | * For ASF and Pass Through versions of f/w this means that |
1614 | * the driver is loaded. For AMT version (only with 82573) | |
1615 | * of the f/w this means that the network i/f is open. | |
1616 | **/ | |
1617 | static void e1000_get_hw_control(struct e1000_adapter *adapter) | |
1618 | { | |
1619 | struct e1000_hw *hw = &adapter->hw; | |
1620 | u32 ctrl_ext; | |
1621 | u32 swsm; | |
1622 | ||
1623 | /* Let firmware know the driver has taken over */ | |
1624 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1625 | swsm = er32(SWSM); | |
1626 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
1627 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1628 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 1629 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
1630 | } |
1631 | } | |
1632 | ||
1633 | /** | |
1634 | * e1000_release_hw_control - release control of the h/w to f/w | |
1635 | * @adapter: address of board private structure | |
1636 | * | |
489815ce | 1637 | * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1638 | * For ASF and Pass Through versions of f/w this means that the |
1639 | * driver is no longer loaded. For AMT version (only with 82573) i | |
1640 | * of the f/w this means that the network i/f is closed. | |
1641 | * | |
1642 | **/ | |
1643 | static void e1000_release_hw_control(struct e1000_adapter *adapter) | |
1644 | { | |
1645 | struct e1000_hw *hw = &adapter->hw; | |
1646 | u32 ctrl_ext; | |
1647 | u32 swsm; | |
1648 | ||
1649 | /* Let firmware taken over control of h/w */ | |
1650 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1651 | swsm = er32(SWSM); | |
1652 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
1653 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1654 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 1655 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
1656 | } |
1657 | } | |
1658 | ||
bc7f75fa AK |
1659 | /** |
1660 | * @e1000_alloc_ring - allocate memory for a ring structure | |
1661 | **/ | |
1662 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
1663 | struct e1000_ring *ring) | |
1664 | { | |
1665 | struct pci_dev *pdev = adapter->pdev; | |
1666 | ||
1667 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
1668 | GFP_KERNEL); | |
1669 | if (!ring->desc) | |
1670 | return -ENOMEM; | |
1671 | ||
1672 | return 0; | |
1673 | } | |
1674 | ||
1675 | /** | |
1676 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
1677 | * @adapter: board private structure | |
1678 | * | |
1679 | * Return 0 on success, negative on failure | |
1680 | **/ | |
1681 | int e1000e_setup_tx_resources(struct e1000_adapter *adapter) | |
1682 | { | |
1683 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1684 | int err = -ENOMEM, size; | |
1685 | ||
1686 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1687 | tx_ring->buffer_info = vmalloc(size); | |
1688 | if (!tx_ring->buffer_info) | |
1689 | goto err; | |
1690 | memset(tx_ring->buffer_info, 0, size); | |
1691 | ||
1692 | /* round up to nearest 4K */ | |
1693 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
1694 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
1695 | ||
1696 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
1697 | if (err) | |
1698 | goto err; | |
1699 | ||
1700 | tx_ring->next_to_use = 0; | |
1701 | tx_ring->next_to_clean = 0; | |
1702 | spin_lock_init(&adapter->tx_queue_lock); | |
1703 | ||
1704 | return 0; | |
1705 | err: | |
1706 | vfree(tx_ring->buffer_info); | |
44defeb3 | 1707 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
1708 | return err; |
1709 | } | |
1710 | ||
1711 | /** | |
1712 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
1713 | * @adapter: board private structure | |
1714 | * | |
1715 | * Returns 0 on success, negative on failure | |
1716 | **/ | |
1717 | int e1000e_setup_rx_resources(struct e1000_adapter *adapter) | |
1718 | { | |
1719 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 AK |
1720 | struct e1000_buffer *buffer_info; |
1721 | int i, size, desc_len, err = -ENOMEM; | |
bc7f75fa AK |
1722 | |
1723 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1724 | rx_ring->buffer_info = vmalloc(size); | |
1725 | if (!rx_ring->buffer_info) | |
1726 | goto err; | |
1727 | memset(rx_ring->buffer_info, 0, size); | |
1728 | ||
47f44e40 AK |
1729 | for (i = 0; i < rx_ring->count; i++) { |
1730 | buffer_info = &rx_ring->buffer_info[i]; | |
1731 | buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, | |
1732 | sizeof(struct e1000_ps_page), | |
1733 | GFP_KERNEL); | |
1734 | if (!buffer_info->ps_pages) | |
1735 | goto err_pages; | |
1736 | } | |
bc7f75fa AK |
1737 | |
1738 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1739 | ||
1740 | /* Round up to nearest 4K */ | |
1741 | rx_ring->size = rx_ring->count * desc_len; | |
1742 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
1743 | ||
1744 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
1745 | if (err) | |
47f44e40 | 1746 | goto err_pages; |
bc7f75fa AK |
1747 | |
1748 | rx_ring->next_to_clean = 0; | |
1749 | rx_ring->next_to_use = 0; | |
1750 | rx_ring->rx_skb_top = NULL; | |
1751 | ||
1752 | return 0; | |
47f44e40 AK |
1753 | |
1754 | err_pages: | |
1755 | for (i = 0; i < rx_ring->count; i++) { | |
1756 | buffer_info = &rx_ring->buffer_info[i]; | |
1757 | kfree(buffer_info->ps_pages); | |
1758 | } | |
bc7f75fa AK |
1759 | err: |
1760 | vfree(rx_ring->buffer_info); | |
44defeb3 | 1761 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
1762 | return err; |
1763 | } | |
1764 | ||
1765 | /** | |
1766 | * e1000_clean_tx_ring - Free Tx Buffers | |
1767 | * @adapter: board private structure | |
1768 | **/ | |
1769 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
1770 | { | |
1771 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1772 | struct e1000_buffer *buffer_info; | |
1773 | unsigned long size; | |
1774 | unsigned int i; | |
1775 | ||
1776 | for (i = 0; i < tx_ring->count; i++) { | |
1777 | buffer_info = &tx_ring->buffer_info[i]; | |
1778 | e1000_put_txbuf(adapter, buffer_info); | |
1779 | } | |
1780 | ||
1781 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1782 | memset(tx_ring->buffer_info, 0, size); | |
1783 | ||
1784 | memset(tx_ring->desc, 0, tx_ring->size); | |
1785 | ||
1786 | tx_ring->next_to_use = 0; | |
1787 | tx_ring->next_to_clean = 0; | |
1788 | ||
1789 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1790 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1791 | } | |
1792 | ||
1793 | /** | |
1794 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
1795 | * @adapter: board private structure | |
1796 | * | |
1797 | * Free all transmit software resources | |
1798 | **/ | |
1799 | void e1000e_free_tx_resources(struct e1000_adapter *adapter) | |
1800 | { | |
1801 | struct pci_dev *pdev = adapter->pdev; | |
1802 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1803 | ||
1804 | e1000_clean_tx_ring(adapter); | |
1805 | ||
1806 | vfree(tx_ring->buffer_info); | |
1807 | tx_ring->buffer_info = NULL; | |
1808 | ||
1809 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
1810 | tx_ring->dma); | |
1811 | tx_ring->desc = NULL; | |
1812 | } | |
1813 | ||
1814 | /** | |
1815 | * e1000e_free_rx_resources - Free Rx Resources | |
1816 | * @adapter: board private structure | |
1817 | * | |
1818 | * Free all receive software resources | |
1819 | **/ | |
1820 | ||
1821 | void e1000e_free_rx_resources(struct e1000_adapter *adapter) | |
1822 | { | |
1823 | struct pci_dev *pdev = adapter->pdev; | |
1824 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 | 1825 | int i; |
bc7f75fa AK |
1826 | |
1827 | e1000_clean_rx_ring(adapter); | |
1828 | ||
47f44e40 AK |
1829 | for (i = 0; i < rx_ring->count; i++) { |
1830 | kfree(rx_ring->buffer_info[i].ps_pages); | |
1831 | } | |
1832 | ||
bc7f75fa AK |
1833 | vfree(rx_ring->buffer_info); |
1834 | rx_ring->buffer_info = NULL; | |
1835 | ||
bc7f75fa AK |
1836 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
1837 | rx_ring->dma); | |
1838 | rx_ring->desc = NULL; | |
1839 | } | |
1840 | ||
1841 | /** | |
1842 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
489815ce AK |
1843 | * @adapter: pointer to adapter |
1844 | * @itr_setting: current adapter->itr | |
1845 | * @packets: the number of packets during this measurement interval | |
1846 | * @bytes: the number of bytes during this measurement interval | |
1847 | * | |
bc7f75fa AK |
1848 | * Stores a new ITR value based on packets and byte |
1849 | * counts during the last interrupt. The advantage of per interrupt | |
1850 | * computation is faster updates and more accurate ITR for the current | |
1851 | * traffic pattern. Constants in this function were computed | |
1852 | * based on theoretical maximum wire speed and thresholds were set based | |
1853 | * on testing data as well as attempting to minimize response time | |
4662e82b BA |
1854 | * while increasing bulk throughput. This functionality is controlled |
1855 | * by the InterruptThrottleRate module parameter. | |
bc7f75fa AK |
1856 | **/ |
1857 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
1858 | u16 itr_setting, int packets, | |
1859 | int bytes) | |
1860 | { | |
1861 | unsigned int retval = itr_setting; | |
1862 | ||
1863 | if (packets == 0) | |
1864 | goto update_itr_done; | |
1865 | ||
1866 | switch (itr_setting) { | |
1867 | case lowest_latency: | |
1868 | /* handle TSO and jumbo frames */ | |
1869 | if (bytes/packets > 8000) | |
1870 | retval = bulk_latency; | |
1871 | else if ((packets < 5) && (bytes > 512)) { | |
1872 | retval = low_latency; | |
1873 | } | |
1874 | break; | |
1875 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
1876 | if (bytes > 10000) { | |
1877 | /* this if handles the TSO accounting */ | |
1878 | if (bytes/packets > 8000) { | |
1879 | retval = bulk_latency; | |
1880 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
1881 | retval = bulk_latency; | |
1882 | } else if ((packets > 35)) { | |
1883 | retval = lowest_latency; | |
1884 | } | |
1885 | } else if (bytes/packets > 2000) { | |
1886 | retval = bulk_latency; | |
1887 | } else if (packets <= 2 && bytes < 512) { | |
1888 | retval = lowest_latency; | |
1889 | } | |
1890 | break; | |
1891 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
1892 | if (bytes > 25000) { | |
1893 | if (packets > 35) { | |
1894 | retval = low_latency; | |
1895 | } | |
1896 | } else if (bytes < 6000) { | |
1897 | retval = low_latency; | |
1898 | } | |
1899 | break; | |
1900 | } | |
1901 | ||
1902 | update_itr_done: | |
1903 | return retval; | |
1904 | } | |
1905 | ||
1906 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
1907 | { | |
1908 | struct e1000_hw *hw = &adapter->hw; | |
1909 | u16 current_itr; | |
1910 | u32 new_itr = adapter->itr; | |
1911 | ||
1912 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
1913 | if (adapter->link_speed != SPEED_1000) { | |
1914 | current_itr = 0; | |
1915 | new_itr = 4000; | |
1916 | goto set_itr_now; | |
1917 | } | |
1918 | ||
1919 | adapter->tx_itr = e1000_update_itr(adapter, | |
1920 | adapter->tx_itr, | |
1921 | adapter->total_tx_packets, | |
1922 | adapter->total_tx_bytes); | |
1923 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
1924 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
1925 | adapter->tx_itr = low_latency; | |
1926 | ||
1927 | adapter->rx_itr = e1000_update_itr(adapter, | |
1928 | adapter->rx_itr, | |
1929 | adapter->total_rx_packets, | |
1930 | adapter->total_rx_bytes); | |
1931 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
1932 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
1933 | adapter->rx_itr = low_latency; | |
1934 | ||
1935 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
1936 | ||
1937 | switch (current_itr) { | |
1938 | /* counts and packets in update_itr are dependent on these numbers */ | |
1939 | case lowest_latency: | |
1940 | new_itr = 70000; | |
1941 | break; | |
1942 | case low_latency: | |
1943 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1944 | break; | |
1945 | case bulk_latency: | |
1946 | new_itr = 4000; | |
1947 | break; | |
1948 | default: | |
1949 | break; | |
1950 | } | |
1951 | ||
1952 | set_itr_now: | |
1953 | if (new_itr != adapter->itr) { | |
ad68076e BA |
1954 | /* |
1955 | * this attempts to bias the interrupt rate towards Bulk | |
bc7f75fa | 1956 | * by adding intermediate steps when interrupt rate is |
ad68076e BA |
1957 | * increasing |
1958 | */ | |
bc7f75fa AK |
1959 | new_itr = new_itr > adapter->itr ? |
1960 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
1961 | new_itr; | |
1962 | adapter->itr = new_itr; | |
4662e82b BA |
1963 | adapter->rx_ring->itr_val = new_itr; |
1964 | if (adapter->msix_entries) | |
1965 | adapter->rx_ring->set_itr = 1; | |
1966 | else | |
1967 | ew32(ITR, 1000000000 / (new_itr * 256)); | |
bc7f75fa AK |
1968 | } |
1969 | } | |
1970 | ||
4662e82b BA |
1971 | /** |
1972 | * e1000_alloc_queues - Allocate memory for all rings | |
1973 | * @adapter: board private structure to initialize | |
1974 | **/ | |
1975 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) | |
1976 | { | |
1977 | adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
1978 | if (!adapter->tx_ring) | |
1979 | goto err; | |
1980 | ||
1981 | adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
1982 | if (!adapter->rx_ring) | |
1983 | goto err; | |
1984 | ||
1985 | return 0; | |
1986 | err: | |
1987 | e_err("Unable to allocate memory for queues\n"); | |
1988 | kfree(adapter->rx_ring); | |
1989 | kfree(adapter->tx_ring); | |
1990 | return -ENOMEM; | |
1991 | } | |
1992 | ||
bc7f75fa AK |
1993 | /** |
1994 | * e1000_clean - NAPI Rx polling callback | |
ad68076e | 1995 | * @napi: struct associated with this polling callback |
489815ce | 1996 | * @budget: amount of packets driver is allowed to process this poll |
bc7f75fa AK |
1997 | **/ |
1998 | static int e1000_clean(struct napi_struct *napi, int budget) | |
1999 | { | |
2000 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); | |
4662e82b | 2001 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa | 2002 | struct net_device *poll_dev = adapter->netdev; |
d2c7ddd6 | 2003 | int tx_cleaned = 0, work_done = 0; |
bc7f75fa | 2004 | |
4cf1653a | 2005 | adapter = netdev_priv(poll_dev); |
bc7f75fa | 2006 | |
4662e82b BA |
2007 | if (adapter->msix_entries && |
2008 | !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) | |
2009 | goto clean_rx; | |
2010 | ||
ad68076e BA |
2011 | /* |
2012 | * e1000_clean is called per-cpu. This lock protects | |
bc7f75fa AK |
2013 | * tx_ring from being cleaned by multiple cpus |
2014 | * simultaneously. A failure obtaining the lock means | |
ad68076e BA |
2015 | * tx_ring is currently being cleaned anyway. |
2016 | */ | |
bc7f75fa | 2017 | if (spin_trylock(&adapter->tx_queue_lock)) { |
d2c7ddd6 | 2018 | tx_cleaned = e1000_clean_tx_irq(adapter); |
bc7f75fa AK |
2019 | spin_unlock(&adapter->tx_queue_lock); |
2020 | } | |
2021 | ||
4662e82b | 2022 | clean_rx: |
bc7f75fa | 2023 | adapter->clean_rx(adapter, &work_done, budget); |
d2c7ddd6 DM |
2024 | |
2025 | if (tx_cleaned) | |
2026 | work_done = budget; | |
bc7f75fa | 2027 | |
53e52c72 DM |
2028 | /* If budget not fully consumed, exit the polling mode */ |
2029 | if (work_done < budget) { | |
bc7f75fa AK |
2030 | if (adapter->itr_setting & 3) |
2031 | e1000_set_itr(adapter); | |
2032 | netif_rx_complete(poll_dev, napi); | |
4662e82b BA |
2033 | if (adapter->msix_entries) |
2034 | ew32(IMS, adapter->rx_ring->ims_val); | |
2035 | else | |
2036 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2037 | } |
2038 | ||
2039 | return work_done; | |
2040 | } | |
2041 | ||
2042 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
2043 | { | |
2044 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2045 | struct e1000_hw *hw = &adapter->hw; | |
2046 | u32 vfta, index; | |
2047 | ||
2048 | /* don't update vlan cookie if already programmed */ | |
2049 | if ((adapter->hw.mng_cookie.status & | |
2050 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2051 | (vid == adapter->mng_vlan_id)) | |
2052 | return; | |
2053 | /* add VID to filter table */ | |
2054 | index = (vid >> 5) & 0x7F; | |
2055 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2056 | vfta |= (1 << (vid & 0x1F)); | |
2057 | e1000e_write_vfta(hw, index, vfta); | |
2058 | } | |
2059 | ||
2060 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
2061 | { | |
2062 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2063 | struct e1000_hw *hw = &adapter->hw; | |
2064 | u32 vfta, index; | |
2065 | ||
74ef9c39 JB |
2066 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2067 | e1000_irq_disable(adapter); | |
bc7f75fa | 2068 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
74ef9c39 JB |
2069 | |
2070 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
2071 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2072 | |
2073 | if ((adapter->hw.mng_cookie.status & | |
2074 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2075 | (vid == adapter->mng_vlan_id)) { | |
2076 | /* release control to f/w */ | |
2077 | e1000_release_hw_control(adapter); | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | /* remove VID from filter table */ | |
2082 | index = (vid >> 5) & 0x7F; | |
2083 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2084 | vfta &= ~(1 << (vid & 0x1F)); | |
2085 | e1000e_write_vfta(hw, index, vfta); | |
2086 | } | |
2087 | ||
2088 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
2089 | { | |
2090 | struct net_device *netdev = adapter->netdev; | |
2091 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
2092 | u16 old_vid = adapter->mng_vlan_id; | |
2093 | ||
2094 | if (!adapter->vlgrp) | |
2095 | return; | |
2096 | ||
2097 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
2098 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2099 | if (adapter->hw.mng_cookie.status & | |
2100 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
2101 | e1000_vlan_rx_add_vid(netdev, vid); | |
2102 | adapter->mng_vlan_id = vid; | |
2103 | } | |
2104 | ||
2105 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
2106 | (vid != old_vid) && | |
2107 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
2108 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
2109 | } else { | |
2110 | adapter->mng_vlan_id = vid; | |
2111 | } | |
2112 | } | |
2113 | ||
2114 | ||
2115 | static void e1000_vlan_rx_register(struct net_device *netdev, | |
2116 | struct vlan_group *grp) | |
2117 | { | |
2118 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2119 | struct e1000_hw *hw = &adapter->hw; | |
2120 | u32 ctrl, rctl; | |
2121 | ||
74ef9c39 JB |
2122 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2123 | e1000_irq_disable(adapter); | |
bc7f75fa AK |
2124 | adapter->vlgrp = grp; |
2125 | ||
2126 | if (grp) { | |
2127 | /* enable VLAN tag insert/strip */ | |
2128 | ctrl = er32(CTRL); | |
2129 | ctrl |= E1000_CTRL_VME; | |
2130 | ew32(CTRL, ctrl); | |
2131 | ||
2132 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
2133 | /* enable VLAN receive filtering */ | |
2134 | rctl = er32(RCTL); | |
bc7f75fa AK |
2135 | rctl &= ~E1000_RCTL_CFIEN; |
2136 | ew32(RCTL, rctl); | |
2137 | e1000_update_mng_vlan(adapter); | |
2138 | } | |
2139 | } else { | |
2140 | /* disable VLAN tag insert/strip */ | |
2141 | ctrl = er32(CTRL); | |
2142 | ctrl &= ~E1000_CTRL_VME; | |
2143 | ew32(CTRL, ctrl); | |
2144 | ||
2145 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
bc7f75fa AK |
2146 | if (adapter->mng_vlan_id != |
2147 | (u16)E1000_MNG_VLAN_NONE) { | |
2148 | e1000_vlan_rx_kill_vid(netdev, | |
2149 | adapter->mng_vlan_id); | |
2150 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2151 | } | |
2152 | } | |
2153 | } | |
2154 | ||
74ef9c39 JB |
2155 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2156 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2157 | } |
2158 | ||
2159 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
2160 | { | |
2161 | u16 vid; | |
2162 | ||
2163 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2164 | ||
2165 | if (!adapter->vlgrp) | |
2166 | return; | |
2167 | ||
2168 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2169 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
2170 | continue; | |
2171 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | static void e1000_init_manageability(struct e1000_adapter *adapter) | |
2176 | { | |
2177 | struct e1000_hw *hw = &adapter->hw; | |
2178 | u32 manc, manc2h; | |
2179 | ||
2180 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
2181 | return; | |
2182 | ||
2183 | manc = er32(MANC); | |
2184 | ||
ad68076e BA |
2185 | /* |
2186 | * enable receiving management packets to the host. this will probably | |
bc7f75fa | 2187 | * generate destination unreachable messages from the host OS, but |
ad68076e BA |
2188 | * the packets will be handled on SMBUS |
2189 | */ | |
bc7f75fa AK |
2190 | manc |= E1000_MANC_EN_MNG2HOST; |
2191 | manc2h = er32(MANC2H); | |
2192 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
2193 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
2194 | manc2h |= E1000_MNG2HOST_PORT_623; | |
2195 | manc2h |= E1000_MNG2HOST_PORT_664; | |
2196 | ew32(MANC2H, manc2h); | |
2197 | ew32(MANC, manc); | |
2198 | } | |
2199 | ||
2200 | /** | |
2201 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
2202 | * @adapter: board private structure | |
2203 | * | |
2204 | * Configure the Tx unit of the MAC after a reset. | |
2205 | **/ | |
2206 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
2207 | { | |
2208 | struct e1000_hw *hw = &adapter->hw; | |
2209 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2210 | u64 tdba; | |
2211 | u32 tdlen, tctl, tipg, tarc; | |
2212 | u32 ipgr1, ipgr2; | |
2213 | ||
2214 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
2215 | tdba = tx_ring->dma; | |
2216 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
2217 | ew32(TDBAL, (tdba & DMA_32BIT_MASK)); | |
2218 | ew32(TDBAH, (tdba >> 32)); | |
2219 | ew32(TDLEN, tdlen); | |
2220 | ew32(TDH, 0); | |
2221 | ew32(TDT, 0); | |
2222 | tx_ring->head = E1000_TDH; | |
2223 | tx_ring->tail = E1000_TDT; | |
2224 | ||
2225 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
2226 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ | |
2227 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ | |
2228 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ | |
2229 | ||
2230 | if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) | |
2231 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ | |
2232 | ||
2233 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; | |
2234 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
2235 | ew32(TIPG, tipg); | |
2236 | ||
2237 | /* Set the Tx Interrupt Delay register */ | |
2238 | ew32(TIDV, adapter->tx_int_delay); | |
ad68076e | 2239 | /* Tx irq moderation */ |
bc7f75fa AK |
2240 | ew32(TADV, adapter->tx_abs_int_delay); |
2241 | ||
2242 | /* Program the Transmit Control Register */ | |
2243 | tctl = er32(TCTL); | |
2244 | tctl &= ~E1000_TCTL_CT; | |
2245 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2246 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2247 | ||
2248 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { | |
e9ec2c0f | 2249 | tarc = er32(TARC(0)); |
ad68076e BA |
2250 | /* |
2251 | * set the speed mode bit, we'll clear it if we're not at | |
2252 | * gigabit link later | |
2253 | */ | |
bc7f75fa AK |
2254 | #define SPEED_MODE_BIT (1 << 21) |
2255 | tarc |= SPEED_MODE_BIT; | |
e9ec2c0f | 2256 | ew32(TARC(0), tarc); |
bc7f75fa AK |
2257 | } |
2258 | ||
2259 | /* errata: program both queues to unweighted RR */ | |
2260 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
e9ec2c0f | 2261 | tarc = er32(TARC(0)); |
bc7f75fa | 2262 | tarc |= 1; |
e9ec2c0f JK |
2263 | ew32(TARC(0), tarc); |
2264 | tarc = er32(TARC(1)); | |
bc7f75fa | 2265 | tarc |= 1; |
e9ec2c0f | 2266 | ew32(TARC(1), tarc); |
bc7f75fa AK |
2267 | } |
2268 | ||
2269 | e1000e_config_collision_dist(hw); | |
2270 | ||
2271 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
2272 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
2273 | ||
2274 | /* only set IDE if we are delaying interrupts using the timers */ | |
2275 | if (adapter->tx_int_delay) | |
2276 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
2277 | ||
2278 | /* enable Report Status bit */ | |
2279 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
2280 | ||
2281 | ew32(TCTL, tctl); | |
2282 | ||
2283 | adapter->tx_queue_len = adapter->netdev->tx_queue_len; | |
2284 | } | |
2285 | ||
2286 | /** | |
2287 | * e1000_setup_rctl - configure the receive control registers | |
2288 | * @adapter: Board private structure | |
2289 | **/ | |
2290 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
2291 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
2292 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
2293 | { | |
2294 | struct e1000_hw *hw = &adapter->hw; | |
2295 | u32 rctl, rfctl; | |
2296 | u32 psrctl = 0; | |
2297 | u32 pages = 0; | |
2298 | ||
2299 | /* Program MC offset vector base */ | |
2300 | rctl = er32(RCTL); | |
2301 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
2302 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
2303 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
2304 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
2305 | ||
2306 | /* Do not Store bad packets */ | |
2307 | rctl &= ~E1000_RCTL_SBP; | |
2308 | ||
2309 | /* Enable Long Packet receive */ | |
2310 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
2311 | rctl &= ~E1000_RCTL_LPE; | |
2312 | else | |
2313 | rctl |= E1000_RCTL_LPE; | |
2314 | ||
eb7c3adb JK |
2315 | /* Some systems expect that the CRC is included in SMBUS traffic. The |
2316 | * hardware strips the CRC before sending to both SMBUS (BMC) and to | |
2317 | * host memory when this is enabled | |
2318 | */ | |
2319 | if (adapter->flags2 & FLAG2_CRC_STRIPPING) | |
2320 | rctl |= E1000_RCTL_SECRC; | |
5918bd88 | 2321 | |
bc7f75fa AK |
2322 | /* Setup buffer sizes */ |
2323 | rctl &= ~E1000_RCTL_SZ_4096; | |
2324 | rctl |= E1000_RCTL_BSEX; | |
2325 | switch (adapter->rx_buffer_len) { | |
2326 | case 256: | |
2327 | rctl |= E1000_RCTL_SZ_256; | |
2328 | rctl &= ~E1000_RCTL_BSEX; | |
2329 | break; | |
2330 | case 512: | |
2331 | rctl |= E1000_RCTL_SZ_512; | |
2332 | rctl &= ~E1000_RCTL_BSEX; | |
2333 | break; | |
2334 | case 1024: | |
2335 | rctl |= E1000_RCTL_SZ_1024; | |
2336 | rctl &= ~E1000_RCTL_BSEX; | |
2337 | break; | |
2338 | case 2048: | |
2339 | default: | |
2340 | rctl |= E1000_RCTL_SZ_2048; | |
2341 | rctl &= ~E1000_RCTL_BSEX; | |
2342 | break; | |
2343 | case 4096: | |
2344 | rctl |= E1000_RCTL_SZ_4096; | |
2345 | break; | |
2346 | case 8192: | |
2347 | rctl |= E1000_RCTL_SZ_8192; | |
2348 | break; | |
2349 | case 16384: | |
2350 | rctl |= E1000_RCTL_SZ_16384; | |
2351 | break; | |
2352 | } | |
2353 | ||
2354 | /* | |
2355 | * 82571 and greater support packet-split where the protocol | |
2356 | * header is placed in skb->data and the packet data is | |
2357 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
2358 | * In the case of a non-split, skb->data is linearly filled, | |
2359 | * followed by the page buffers. Therefore, skb->data is | |
2360 | * sized to hold the largest protocol header. | |
2361 | * | |
2362 | * allocations using alloc_page take too long for regular MTU | |
2363 | * so only enable packet split for jumbo frames | |
2364 | * | |
2365 | * Using pages when the page size is greater than 16k wastes | |
2366 | * a lot of memory, since we allocate 3 pages at all times | |
2367 | * per packet. | |
2368 | */ | |
bc7f75fa | 2369 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
97ac8cae BA |
2370 | if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) && |
2371 | (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) | |
bc7f75fa | 2372 | adapter->rx_ps_pages = pages; |
97ac8cae BA |
2373 | else |
2374 | adapter->rx_ps_pages = 0; | |
bc7f75fa AK |
2375 | |
2376 | if (adapter->rx_ps_pages) { | |
2377 | /* Configure extra packet-split registers */ | |
2378 | rfctl = er32(RFCTL); | |
2379 | rfctl |= E1000_RFCTL_EXTEN; | |
ad68076e BA |
2380 | /* |
2381 | * disable packet split support for IPv6 extension headers, | |
2382 | * because some malformed IPv6 headers can hang the Rx | |
2383 | */ | |
bc7f75fa AK |
2384 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
2385 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
2386 | ||
2387 | ew32(RFCTL, rfctl); | |
2388 | ||
140a7480 AK |
2389 | /* Enable Packet split descriptors */ |
2390 | rctl |= E1000_RCTL_DTYP_PS; | |
bc7f75fa AK |
2391 | |
2392 | psrctl |= adapter->rx_ps_bsize0 >> | |
2393 | E1000_PSRCTL_BSIZE0_SHIFT; | |
2394 | ||
2395 | switch (adapter->rx_ps_pages) { | |
2396 | case 3: | |
2397 | psrctl |= PAGE_SIZE << | |
2398 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2399 | case 2: | |
2400 | psrctl |= PAGE_SIZE << | |
2401 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2402 | case 1: | |
2403 | psrctl |= PAGE_SIZE >> | |
2404 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2405 | break; | |
2406 | } | |
2407 | ||
2408 | ew32(PSRCTL, psrctl); | |
2409 | } | |
2410 | ||
2411 | ew32(RCTL, rctl); | |
318a94d6 JK |
2412 | /* just started the receive unit, no need to restart */ |
2413 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
bc7f75fa AK |
2414 | } |
2415 | ||
2416 | /** | |
2417 | * e1000_configure_rx - Configure Receive Unit after Reset | |
2418 | * @adapter: board private structure | |
2419 | * | |
2420 | * Configure the Rx unit of the MAC after a reset. | |
2421 | **/ | |
2422 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
2423 | { | |
2424 | struct e1000_hw *hw = &adapter->hw; | |
2425 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
2426 | u64 rdba; | |
2427 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
2428 | ||
2429 | if (adapter->rx_ps_pages) { | |
2430 | /* this is a 32 byte descriptor */ | |
2431 | rdlen = rx_ring->count * | |
2432 | sizeof(union e1000_rx_desc_packet_split); | |
2433 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2434 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
97ac8cae BA |
2435 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
2436 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); | |
2437 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
2438 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
bc7f75fa | 2439 | } else { |
97ac8cae | 2440 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); |
bc7f75fa AK |
2441 | adapter->clean_rx = e1000_clean_rx_irq; |
2442 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2443 | } | |
2444 | ||
2445 | /* disable receives while setting up the descriptors */ | |
2446 | rctl = er32(RCTL); | |
2447 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2448 | e1e_flush(); | |
2449 | msleep(10); | |
2450 | ||
2451 | /* set the Receive Delay Timer Register */ | |
2452 | ew32(RDTR, adapter->rx_int_delay); | |
2453 | ||
2454 | /* irq moderation */ | |
2455 | ew32(RADV, adapter->rx_abs_int_delay); | |
2456 | if (adapter->itr_setting != 0) | |
ad68076e | 2457 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
bc7f75fa AK |
2458 | |
2459 | ctrl_ext = er32(CTRL_EXT); | |
2460 | /* Reset delay timers after every interrupt */ | |
2461 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; | |
2462 | /* Auto-Mask interrupts upon ICR access */ | |
2463 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
2464 | ew32(IAM, 0xffffffff); | |
2465 | ew32(CTRL_EXT, ctrl_ext); | |
2466 | e1e_flush(); | |
2467 | ||
ad68076e BA |
2468 | /* |
2469 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
2470 | * the Base and Length of the Rx Descriptor Ring | |
2471 | */ | |
bc7f75fa AK |
2472 | rdba = rx_ring->dma; |
2473 | ew32(RDBAL, (rdba & DMA_32BIT_MASK)); | |
2474 | ew32(RDBAH, (rdba >> 32)); | |
2475 | ew32(RDLEN, rdlen); | |
2476 | ew32(RDH, 0); | |
2477 | ew32(RDT, 0); | |
2478 | rx_ring->head = E1000_RDH; | |
2479 | rx_ring->tail = E1000_RDT; | |
2480 | ||
2481 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
2482 | rxcsum = er32(RXCSUM); | |
2483 | if (adapter->flags & FLAG_RX_CSUM_ENABLED) { | |
2484 | rxcsum |= E1000_RXCSUM_TUOFL; | |
2485 | ||
ad68076e BA |
2486 | /* |
2487 | * IPv4 payload checksum for UDP fragments must be | |
2488 | * used in conjunction with packet-split. | |
2489 | */ | |
bc7f75fa AK |
2490 | if (adapter->rx_ps_pages) |
2491 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
2492 | } else { | |
2493 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2494 | /* no need to clear IPPCSE as it defaults to 0 */ | |
2495 | } | |
2496 | ew32(RXCSUM, rxcsum); | |
2497 | ||
ad68076e BA |
2498 | /* |
2499 | * Enable early receives on supported devices, only takes effect when | |
bc7f75fa | 2500 | * packet size is equal or larger than the specified value (in 8 byte |
ad68076e BA |
2501 | * units), e.g. using jumbo frames when setting to E1000_ERT_2048 |
2502 | */ | |
bc7f75fa | 2503 | if ((adapter->flags & FLAG_HAS_ERT) && |
97ac8cae BA |
2504 | (adapter->netdev->mtu > ETH_DATA_LEN)) { |
2505 | u32 rxdctl = er32(RXDCTL(0)); | |
2506 | ew32(RXDCTL(0), rxdctl | 0x3); | |
2507 | ew32(ERT, E1000_ERT_2048 | (1 << 13)); | |
2508 | /* | |
2509 | * With jumbo frames and early-receive enabled, excessive | |
2510 | * C4->C2 latencies result in dropped transactions. | |
2511 | */ | |
2512 | pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, | |
2513 | e1000e_driver_name, 55); | |
2514 | } else { | |
2515 | pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, | |
2516 | e1000e_driver_name, | |
2517 | PM_QOS_DEFAULT_VALUE); | |
2518 | } | |
bc7f75fa AK |
2519 | |
2520 | /* Enable Receives */ | |
2521 | ew32(RCTL, rctl); | |
2522 | } | |
2523 | ||
2524 | /** | |
e2de3eb6 | 2525 | * e1000_update_mc_addr_list - Update Multicast addresses |
bc7f75fa AK |
2526 | * @hw: pointer to the HW structure |
2527 | * @mc_addr_list: array of multicast addresses to program | |
2528 | * @mc_addr_count: number of multicast addresses to program | |
2529 | * @rar_used_count: the first RAR register free to program | |
2530 | * @rar_count: total number of supported Receive Address Registers | |
2531 | * | |
2532 | * Updates the Receive Address Registers and Multicast Table Array. | |
2533 | * The caller must have a packed mc_addr_list of multicast addresses. | |
2534 | * The parameter rar_count will usually be hw->mac.rar_entry_count | |
2535 | * unless there are workarounds that change this. Currently no func pointer | |
2536 | * exists and all implementations are handled in the generic version of this | |
2537 | * function. | |
2538 | **/ | |
e2de3eb6 JK |
2539 | static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list, |
2540 | u32 mc_addr_count, u32 rar_used_count, | |
2541 | u32 rar_count) | |
bc7f75fa | 2542 | { |
e2de3eb6 | 2543 | hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count, |
bc7f75fa AK |
2544 | rar_used_count, rar_count); |
2545 | } | |
2546 | ||
2547 | /** | |
2548 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2549 | * @netdev: network interface device structure | |
2550 | * | |
2551 | * The set_multi entry point is called whenever the multicast address | |
2552 | * list or the network interface flags are updated. This routine is | |
2553 | * responsible for configuring the hardware for proper multicast, | |
2554 | * promiscuous mode, and all-multi behavior. | |
2555 | **/ | |
2556 | static void e1000_set_multi(struct net_device *netdev) | |
2557 | { | |
2558 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2559 | struct e1000_hw *hw = &adapter->hw; | |
2560 | struct e1000_mac_info *mac = &hw->mac; | |
2561 | struct dev_mc_list *mc_ptr; | |
2562 | u8 *mta_list; | |
2563 | u32 rctl; | |
2564 | int i; | |
2565 | ||
2566 | /* Check for Promiscuous and All Multicast modes */ | |
2567 | ||
2568 | rctl = er32(RCTL); | |
2569 | ||
2570 | if (netdev->flags & IFF_PROMISC) { | |
2571 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
746b9f02 | 2572 | rctl &= ~E1000_RCTL_VFE; |
bc7f75fa | 2573 | } else { |
746b9f02 PM |
2574 | if (netdev->flags & IFF_ALLMULTI) { |
2575 | rctl |= E1000_RCTL_MPE; | |
2576 | rctl &= ~E1000_RCTL_UPE; | |
2577 | } else { | |
2578 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2579 | } | |
78ed11a5 | 2580 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
746b9f02 | 2581 | rctl |= E1000_RCTL_VFE; |
bc7f75fa AK |
2582 | } |
2583 | ||
2584 | ew32(RCTL, rctl); | |
2585 | ||
2586 | if (netdev->mc_count) { | |
2587 | mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC); | |
2588 | if (!mta_list) | |
2589 | return; | |
2590 | ||
2591 | /* prepare a packed array of only addresses. */ | |
2592 | mc_ptr = netdev->mc_list; | |
2593 | ||
2594 | for (i = 0; i < netdev->mc_count; i++) { | |
2595 | if (!mc_ptr) | |
2596 | break; | |
2597 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, | |
2598 | ETH_ALEN); | |
2599 | mc_ptr = mc_ptr->next; | |
2600 | } | |
2601 | ||
e2de3eb6 | 2602 | e1000_update_mc_addr_list(hw, mta_list, i, 1, |
bc7f75fa AK |
2603 | mac->rar_entry_count); |
2604 | kfree(mta_list); | |
2605 | } else { | |
2606 | /* | |
2607 | * if we're called from probe, we might not have | |
2608 | * anything to do here, so clear out the list | |
2609 | */ | |
e2de3eb6 | 2610 | e1000_update_mc_addr_list(hw, NULL, 0, 1, mac->rar_entry_count); |
bc7f75fa AK |
2611 | } |
2612 | } | |
2613 | ||
2614 | /** | |
ad68076e | 2615 | * e1000_configure - configure the hardware for Rx and Tx |
bc7f75fa AK |
2616 | * @adapter: private board structure |
2617 | **/ | |
2618 | static void e1000_configure(struct e1000_adapter *adapter) | |
2619 | { | |
2620 | e1000_set_multi(adapter->netdev); | |
2621 | ||
2622 | e1000_restore_vlan(adapter); | |
2623 | e1000_init_manageability(adapter); | |
2624 | ||
2625 | e1000_configure_tx(adapter); | |
2626 | e1000_setup_rctl(adapter); | |
2627 | e1000_configure_rx(adapter); | |
ad68076e | 2628 | adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring)); |
bc7f75fa AK |
2629 | } |
2630 | ||
2631 | /** | |
2632 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
2633 | * @adapter: address of board private structure | |
2634 | * | |
2635 | * The phy may be powered down to save power and turn off link when the | |
2636 | * driver is unloaded and wake on lan is not enabled (among others) | |
2637 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
2638 | **/ | |
2639 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
2640 | { | |
2641 | u16 mii_reg = 0; | |
2642 | ||
2643 | /* Just clear the power down bit to wake the phy back up */ | |
318a94d6 | 2644 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
ad68076e BA |
2645 | /* |
2646 | * According to the manual, the phy will retain its | |
2647 | * settings across a power-down/up cycle | |
2648 | */ | |
bc7f75fa AK |
2649 | e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg); |
2650 | mii_reg &= ~MII_CR_POWER_DOWN; | |
2651 | e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg); | |
2652 | } | |
2653 | ||
2654 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
2655 | } | |
2656 | ||
2657 | /** | |
2658 | * e1000_power_down_phy - Power down the PHY | |
2659 | * | |
2660 | * Power down the PHY so no link is implied when interface is down | |
2661 | * The PHY cannot be powered down is management or WoL is active | |
2662 | */ | |
2663 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
2664 | { | |
2665 | struct e1000_hw *hw = &adapter->hw; | |
2666 | u16 mii_reg; | |
2667 | ||
2668 | /* WoL is enabled */ | |
23b66e2b | 2669 | if (adapter->wol) |
bc7f75fa AK |
2670 | return; |
2671 | ||
2672 | /* non-copper PHY? */ | |
318a94d6 | 2673 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
2674 | return; |
2675 | ||
2676 | /* reset is blocked because of a SoL/IDER session */ | |
ad68076e | 2677 | if (e1000e_check_mng_mode(hw) || e1000_check_reset_block(hw)) |
bc7f75fa AK |
2678 | return; |
2679 | ||
489815ce | 2680 | /* manageability (AMT) is enabled */ |
bc7f75fa AK |
2681 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
2682 | return; | |
2683 | ||
2684 | /* power down the PHY */ | |
2685 | e1e_rphy(hw, PHY_CONTROL, &mii_reg); | |
2686 | mii_reg |= MII_CR_POWER_DOWN; | |
2687 | e1e_wphy(hw, PHY_CONTROL, mii_reg); | |
2688 | mdelay(1); | |
2689 | } | |
2690 | ||
2691 | /** | |
2692 | * e1000e_reset - bring the hardware into a known good state | |
2693 | * | |
2694 | * This function boots the hardware and enables some settings that | |
2695 | * require a configuration cycle of the hardware - those cannot be | |
2696 | * set/changed during runtime. After reset the device needs to be | |
ad68076e | 2697 | * properly configured for Rx, Tx etc. |
bc7f75fa AK |
2698 | */ |
2699 | void e1000e_reset(struct e1000_adapter *adapter) | |
2700 | { | |
2701 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
318a94d6 | 2702 | struct e1000_fc_info *fc = &adapter->hw.fc; |
bc7f75fa AK |
2703 | struct e1000_hw *hw = &adapter->hw; |
2704 | u32 tx_space, min_tx_space, min_rx_space; | |
318a94d6 | 2705 | u32 pba = adapter->pba; |
bc7f75fa AK |
2706 | u16 hwm; |
2707 | ||
ad68076e | 2708 | /* reset Packet Buffer Allocation to default */ |
318a94d6 | 2709 | ew32(PBA, pba); |
df762464 | 2710 | |
318a94d6 | 2711 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
ad68076e BA |
2712 | /* |
2713 | * To maintain wire speed transmits, the Tx FIFO should be | |
bc7f75fa AK |
2714 | * large enough to accommodate two full transmit packets, |
2715 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
2716 | * the Rx FIFO should be large enough to accommodate at least | |
2717 | * one full receive packet and is similarly rounded up and | |
ad68076e BA |
2718 | * expressed in KB. |
2719 | */ | |
df762464 | 2720 | pba = er32(PBA); |
bc7f75fa | 2721 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
df762464 | 2722 | tx_space = pba >> 16; |
bc7f75fa | 2723 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
df762464 | 2724 | pba &= 0xffff; |
ad68076e BA |
2725 | /* |
2726 | * the Tx fifo also stores 16 bytes of information about the tx | |
2727 | * but don't include ethernet FCS because hardware appends it | |
318a94d6 JK |
2728 | */ |
2729 | min_tx_space = (adapter->max_frame_size + | |
bc7f75fa AK |
2730 | sizeof(struct e1000_tx_desc) - |
2731 | ETH_FCS_LEN) * 2; | |
2732 | min_tx_space = ALIGN(min_tx_space, 1024); | |
2733 | min_tx_space >>= 10; | |
2734 | /* software strips receive CRC, so leave room for it */ | |
318a94d6 | 2735 | min_rx_space = adapter->max_frame_size; |
bc7f75fa AK |
2736 | min_rx_space = ALIGN(min_rx_space, 1024); |
2737 | min_rx_space >>= 10; | |
2738 | ||
ad68076e BA |
2739 | /* |
2740 | * If current Tx allocation is less than the min Tx FIFO size, | |
bc7f75fa | 2741 | * and the min Tx FIFO size is less than the current Rx FIFO |
ad68076e BA |
2742 | * allocation, take space away from current Rx allocation |
2743 | */ | |
df762464 AK |
2744 | if ((tx_space < min_tx_space) && |
2745 | ((min_tx_space - tx_space) < pba)) { | |
2746 | pba -= min_tx_space - tx_space; | |
bc7f75fa | 2747 | |
ad68076e BA |
2748 | /* |
2749 | * if short on Rx space, Rx wins and must trump tx | |
2750 | * adjustment or use Early Receive if available | |
2751 | */ | |
df762464 | 2752 | if ((pba < min_rx_space) && |
bc7f75fa AK |
2753 | (!(adapter->flags & FLAG_HAS_ERT))) |
2754 | /* ERT enabled in e1000_configure_rx */ | |
df762464 | 2755 | pba = min_rx_space; |
bc7f75fa | 2756 | } |
df762464 AK |
2757 | |
2758 | ew32(PBA, pba); | |
bc7f75fa AK |
2759 | } |
2760 | ||
bc7f75fa | 2761 | |
ad68076e BA |
2762 | /* |
2763 | * flow control settings | |
2764 | * | |
2765 | * The high water mark must be low enough to fit one full frame | |
bc7f75fa AK |
2766 | * (or the size used for early receive) above it in the Rx FIFO. |
2767 | * Set it to the lower of: | |
2768 | * - 90% of the Rx FIFO size, and | |
2769 | * - the full Rx FIFO size minus the early receive size (for parts | |
2770 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
ad68076e BA |
2771 | * - the full Rx FIFO size minus one full frame |
2772 | */ | |
bc7f75fa | 2773 | if (adapter->flags & FLAG_HAS_ERT) |
318a94d6 JK |
2774 | hwm = min(((pba << 10) * 9 / 10), |
2775 | ((pba << 10) - (E1000_ERT_2048 << 3))); | |
bc7f75fa | 2776 | else |
318a94d6 JK |
2777 | hwm = min(((pba << 10) * 9 / 10), |
2778 | ((pba << 10) - adapter->max_frame_size)); | |
bc7f75fa | 2779 | |
318a94d6 JK |
2780 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
2781 | fc->low_water = fc->high_water - 8; | |
bc7f75fa AK |
2782 | |
2783 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) | |
318a94d6 | 2784 | fc->pause_time = 0xFFFF; |
bc7f75fa | 2785 | else |
318a94d6 JK |
2786 | fc->pause_time = E1000_FC_PAUSE_TIME; |
2787 | fc->send_xon = 1; | |
5c48ef3e | 2788 | fc->current_mode = fc->requested_mode; |
bc7f75fa AK |
2789 | |
2790 | /* Allow time for pending master requests to run */ | |
2791 | mac->ops.reset_hw(hw); | |
97ac8cae BA |
2792 | |
2793 | /* | |
2794 | * For parts with AMT enabled, let the firmware know | |
2795 | * that the network interface is in control | |
2796 | */ | |
c43bc57e | 2797 | if (adapter->flags & FLAG_HAS_AMT) |
97ac8cae BA |
2798 | e1000_get_hw_control(adapter); |
2799 | ||
bc7f75fa AK |
2800 | ew32(WUC, 0); |
2801 | ||
2802 | if (mac->ops.init_hw(hw)) | |
44defeb3 | 2803 | e_err("Hardware Error\n"); |
bc7f75fa AK |
2804 | |
2805 | e1000_update_mng_vlan(adapter); | |
2806 | ||
2807 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
2808 | ew32(VET, ETH_P_8021Q); | |
2809 | ||
2810 | e1000e_reset_adaptive(hw); | |
2811 | e1000_get_phy_info(hw); | |
2812 | ||
2813 | if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
2814 | u16 phy_data = 0; | |
ad68076e BA |
2815 | /* |
2816 | * speed up time to link by disabling smart power down, ignore | |
bc7f75fa | 2817 | * the return value of this function because there is nothing |
ad68076e BA |
2818 | * different we would do if it failed |
2819 | */ | |
bc7f75fa AK |
2820 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
2821 | phy_data &= ~IGP02E1000_PM_SPD; | |
2822 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
2823 | } | |
bc7f75fa AK |
2824 | } |
2825 | ||
2826 | int e1000e_up(struct e1000_adapter *adapter) | |
2827 | { | |
2828 | struct e1000_hw *hw = &adapter->hw; | |
2829 | ||
2830 | /* hardware has been reset, we need to reload some things */ | |
2831 | e1000_configure(adapter); | |
2832 | ||
2833 | clear_bit(__E1000_DOWN, &adapter->state); | |
2834 | ||
2835 | napi_enable(&adapter->napi); | |
4662e82b BA |
2836 | if (adapter->msix_entries) |
2837 | e1000_configure_msix(adapter); | |
bc7f75fa AK |
2838 | e1000_irq_enable(adapter); |
2839 | ||
2840 | /* fire a link change interrupt to start the watchdog */ | |
2841 | ew32(ICS, E1000_ICS_LSC); | |
2842 | return 0; | |
2843 | } | |
2844 | ||
2845 | void e1000e_down(struct e1000_adapter *adapter) | |
2846 | { | |
2847 | struct net_device *netdev = adapter->netdev; | |
2848 | struct e1000_hw *hw = &adapter->hw; | |
2849 | u32 tctl, rctl; | |
2850 | ||
ad68076e BA |
2851 | /* |
2852 | * signal that we're down so the interrupt handler does not | |
2853 | * reschedule our watchdog timer | |
2854 | */ | |
bc7f75fa AK |
2855 | set_bit(__E1000_DOWN, &adapter->state); |
2856 | ||
2857 | /* disable receives in the hardware */ | |
2858 | rctl = er32(RCTL); | |
2859 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2860 | /* flush and sleep below */ | |
2861 | ||
d55b53ff | 2862 | netif_tx_stop_all_queues(netdev); |
bc7f75fa AK |
2863 | |
2864 | /* disable transmits in the hardware */ | |
2865 | tctl = er32(TCTL); | |
2866 | tctl &= ~E1000_TCTL_EN; | |
2867 | ew32(TCTL, tctl); | |
2868 | /* flush both disables and wait for them to finish */ | |
2869 | e1e_flush(); | |
2870 | msleep(10); | |
2871 | ||
2872 | napi_disable(&adapter->napi); | |
2873 | e1000_irq_disable(adapter); | |
2874 | ||
2875 | del_timer_sync(&adapter->watchdog_timer); | |
2876 | del_timer_sync(&adapter->phy_info_timer); | |
2877 | ||
2878 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2879 | netif_carrier_off(netdev); | |
2880 | adapter->link_speed = 0; | |
2881 | adapter->link_duplex = 0; | |
2882 | ||
52cc3086 JK |
2883 | if (!pci_channel_offline(adapter->pdev)) |
2884 | e1000e_reset(adapter); | |
bc7f75fa AK |
2885 | e1000_clean_tx_ring(adapter); |
2886 | e1000_clean_rx_ring(adapter); | |
2887 | ||
2888 | /* | |
2889 | * TODO: for power management, we could drop the link and | |
2890 | * pci_disable_device here. | |
2891 | */ | |
2892 | } | |
2893 | ||
2894 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
2895 | { | |
2896 | might_sleep(); | |
2897 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
2898 | msleep(1); | |
2899 | e1000e_down(adapter); | |
2900 | e1000e_up(adapter); | |
2901 | clear_bit(__E1000_RESETTING, &adapter->state); | |
2902 | } | |
2903 | ||
2904 | /** | |
2905 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
2906 | * @adapter: board private structure to initialize | |
2907 | * | |
2908 | * e1000_sw_init initializes the Adapter private data structure. | |
2909 | * Fields are initialized based on PCI device information and | |
2910 | * OS network device settings (MTU size). | |
2911 | **/ | |
2912 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) | |
2913 | { | |
bc7f75fa AK |
2914 | struct net_device *netdev = adapter->netdev; |
2915 | ||
2916 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
2917 | adapter->rx_ps_bsize0 = 128; | |
318a94d6 JK |
2918 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
2919 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
bc7f75fa | 2920 | |
4662e82b | 2921 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa | 2922 | |
4662e82b BA |
2923 | if (e1000_alloc_queues(adapter)) |
2924 | return -ENOMEM; | |
bc7f75fa AK |
2925 | |
2926 | spin_lock_init(&adapter->tx_queue_lock); | |
2927 | ||
2928 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
bc7f75fa AK |
2929 | e1000_irq_disable(adapter); |
2930 | ||
bc7f75fa AK |
2931 | set_bit(__E1000_DOWN, &adapter->state); |
2932 | return 0; | |
bc7f75fa AK |
2933 | } |
2934 | ||
f8d59f78 BA |
2935 | /** |
2936 | * e1000_intr_msi_test - Interrupt Handler | |
2937 | * @irq: interrupt number | |
2938 | * @data: pointer to a network interface device structure | |
2939 | **/ | |
2940 | static irqreturn_t e1000_intr_msi_test(int irq, void *data) | |
2941 | { | |
2942 | struct net_device *netdev = data; | |
2943 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2944 | struct e1000_hw *hw = &adapter->hw; | |
2945 | u32 icr = er32(ICR); | |
2946 | ||
2947 | e_dbg("%s: icr is %08X\n", netdev->name, icr); | |
2948 | if (icr & E1000_ICR_RXSEQ) { | |
2949 | adapter->flags &= ~FLAG_MSI_TEST_FAILED; | |
2950 | wmb(); | |
2951 | } | |
2952 | ||
2953 | return IRQ_HANDLED; | |
2954 | } | |
2955 | ||
2956 | /** | |
2957 | * e1000_test_msi_interrupt - Returns 0 for successful test | |
2958 | * @adapter: board private struct | |
2959 | * | |
2960 | * code flow taken from tg3.c | |
2961 | **/ | |
2962 | static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) | |
2963 | { | |
2964 | struct net_device *netdev = adapter->netdev; | |
2965 | struct e1000_hw *hw = &adapter->hw; | |
2966 | int err; | |
2967 | ||
2968 | /* poll_enable hasn't been called yet, so don't need disable */ | |
2969 | /* clear any pending events */ | |
2970 | er32(ICR); | |
2971 | ||
2972 | /* free the real vector and request a test handler */ | |
2973 | e1000_free_irq(adapter); | |
4662e82b | 2974 | e1000e_reset_interrupt_capability(adapter); |
f8d59f78 BA |
2975 | |
2976 | /* Assume that the test fails, if it succeeds then the test | |
2977 | * MSI irq handler will unset this flag */ | |
2978 | adapter->flags |= FLAG_MSI_TEST_FAILED; | |
2979 | ||
2980 | err = pci_enable_msi(adapter->pdev); | |
2981 | if (err) | |
2982 | goto msi_test_failed; | |
2983 | ||
2984 | err = request_irq(adapter->pdev->irq, &e1000_intr_msi_test, 0, | |
2985 | netdev->name, netdev); | |
2986 | if (err) { | |
2987 | pci_disable_msi(adapter->pdev); | |
2988 | goto msi_test_failed; | |
2989 | } | |
2990 | ||
2991 | wmb(); | |
2992 | ||
2993 | e1000_irq_enable(adapter); | |
2994 | ||
2995 | /* fire an unusual interrupt on the test handler */ | |
2996 | ew32(ICS, E1000_ICS_RXSEQ); | |
2997 | e1e_flush(); | |
2998 | msleep(50); | |
2999 | ||
3000 | e1000_irq_disable(adapter); | |
3001 | ||
3002 | rmb(); | |
3003 | ||
3004 | if (adapter->flags & FLAG_MSI_TEST_FAILED) { | |
4662e82b | 3005 | adapter->int_mode = E1000E_INT_MODE_LEGACY; |
f8d59f78 BA |
3006 | err = -EIO; |
3007 | e_info("MSI interrupt test failed!\n"); | |
3008 | } | |
3009 | ||
3010 | free_irq(adapter->pdev->irq, netdev); | |
3011 | pci_disable_msi(adapter->pdev); | |
3012 | ||
3013 | if (err == -EIO) | |
3014 | goto msi_test_failed; | |
3015 | ||
3016 | /* okay so the test worked, restore settings */ | |
3017 | e_dbg("%s: MSI interrupt test succeeded!\n", netdev->name); | |
3018 | msi_test_failed: | |
4662e82b | 3019 | e1000e_set_interrupt_capability(adapter); |
f8d59f78 BA |
3020 | e1000_request_irq(adapter); |
3021 | return err; | |
3022 | } | |
3023 | ||
3024 | /** | |
3025 | * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored | |
3026 | * @adapter: board private struct | |
3027 | * | |
3028 | * code flow taken from tg3.c, called with e1000 interrupts disabled. | |
3029 | **/ | |
3030 | static int e1000_test_msi(struct e1000_adapter *adapter) | |
3031 | { | |
3032 | int err; | |
3033 | u16 pci_cmd; | |
3034 | ||
3035 | if (!(adapter->flags & FLAG_MSI_ENABLED)) | |
3036 | return 0; | |
3037 | ||
3038 | /* disable SERR in case the MSI write causes a master abort */ | |
3039 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
3040 | pci_write_config_word(adapter->pdev, PCI_COMMAND, | |
3041 | pci_cmd & ~PCI_COMMAND_SERR); | |
3042 | ||
3043 | err = e1000_test_msi_interrupt(adapter); | |
3044 | ||
3045 | /* restore previous setting of command word */ | |
3046 | pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); | |
3047 | ||
3048 | /* success ! */ | |
3049 | if (!err) | |
3050 | return 0; | |
3051 | ||
3052 | /* EIO means MSI test failed */ | |
3053 | if (err != -EIO) | |
3054 | return err; | |
3055 | ||
3056 | /* back to INTx mode */ | |
3057 | e_warn("MSI interrupt test failed, using legacy interrupt.\n"); | |
3058 | ||
3059 | e1000_free_irq(adapter); | |
3060 | ||
3061 | err = e1000_request_irq(adapter); | |
3062 | ||
3063 | return err; | |
3064 | } | |
3065 | ||
bc7f75fa AK |
3066 | /** |
3067 | * e1000_open - Called when a network interface is made active | |
3068 | * @netdev: network interface device structure | |
3069 | * | |
3070 | * Returns 0 on success, negative value on failure | |
3071 | * | |
3072 | * The open entry point is called when a network interface is made | |
3073 | * active by the system (IFF_UP). At this point all resources needed | |
3074 | * for transmit and receive operations are allocated, the interrupt | |
3075 | * handler is registered with the OS, the watchdog timer is started, | |
3076 | * and the stack is notified that the interface is ready. | |
3077 | **/ | |
3078 | static int e1000_open(struct net_device *netdev) | |
3079 | { | |
3080 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3081 | struct e1000_hw *hw = &adapter->hw; | |
3082 | int err; | |
3083 | ||
3084 | /* disallow open during test */ | |
3085 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
3086 | return -EBUSY; | |
3087 | ||
3088 | /* allocate transmit descriptors */ | |
3089 | err = e1000e_setup_tx_resources(adapter); | |
3090 | if (err) | |
3091 | goto err_setup_tx; | |
3092 | ||
3093 | /* allocate receive descriptors */ | |
3094 | err = e1000e_setup_rx_resources(adapter); | |
3095 | if (err) | |
3096 | goto err_setup_rx; | |
3097 | ||
3098 | e1000e_power_up_phy(adapter); | |
3099 | ||
3100 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
3101 | if ((adapter->hw.mng_cookie.status & | |
3102 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
3103 | e1000_update_mng_vlan(adapter); | |
3104 | ||
ad68076e BA |
3105 | /* |
3106 | * If AMT is enabled, let the firmware know that the network | |
3107 | * interface is now open | |
3108 | */ | |
c43bc57e | 3109 | if (adapter->flags & FLAG_HAS_AMT) |
bc7f75fa AK |
3110 | e1000_get_hw_control(adapter); |
3111 | ||
ad68076e BA |
3112 | /* |
3113 | * before we allocate an interrupt, we must be ready to handle it. | |
bc7f75fa AK |
3114 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
3115 | * as soon as we call pci_request_irq, so we have to setup our | |
ad68076e BA |
3116 | * clean_rx handler before we do so. |
3117 | */ | |
bc7f75fa AK |
3118 | e1000_configure(adapter); |
3119 | ||
3120 | err = e1000_request_irq(adapter); | |
3121 | if (err) | |
3122 | goto err_req_irq; | |
3123 | ||
f8d59f78 BA |
3124 | /* |
3125 | * Work around PCIe errata with MSI interrupts causing some chipsets to | |
3126 | * ignore e1000e MSI messages, which means we need to test our MSI | |
3127 | * interrupt now | |
3128 | */ | |
4662e82b | 3129 | if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
f8d59f78 BA |
3130 | err = e1000_test_msi(adapter); |
3131 | if (err) { | |
3132 | e_err("Interrupt allocation failed\n"); | |
3133 | goto err_req_irq; | |
3134 | } | |
3135 | } | |
3136 | ||
bc7f75fa AK |
3137 | /* From here on the code is the same as e1000e_up() */ |
3138 | clear_bit(__E1000_DOWN, &adapter->state); | |
3139 | ||
3140 | napi_enable(&adapter->napi); | |
3141 | ||
3142 | e1000_irq_enable(adapter); | |
3143 | ||
d55b53ff JK |
3144 | netif_tx_start_all_queues(netdev); |
3145 | ||
bc7f75fa AK |
3146 | /* fire a link status change interrupt to start the watchdog */ |
3147 | ew32(ICS, E1000_ICS_LSC); | |
3148 | ||
3149 | return 0; | |
3150 | ||
3151 | err_req_irq: | |
3152 | e1000_release_hw_control(adapter); | |
3153 | e1000_power_down_phy(adapter); | |
3154 | e1000e_free_rx_resources(adapter); | |
3155 | err_setup_rx: | |
3156 | e1000e_free_tx_resources(adapter); | |
3157 | err_setup_tx: | |
3158 | e1000e_reset(adapter); | |
3159 | ||
3160 | return err; | |
3161 | } | |
3162 | ||
3163 | /** | |
3164 | * e1000_close - Disables a network interface | |
3165 | * @netdev: network interface device structure | |
3166 | * | |
3167 | * Returns 0, this is not allowed to fail | |
3168 | * | |
3169 | * The close entry point is called when an interface is de-activated | |
3170 | * by the OS. The hardware is still under the drivers control, but | |
3171 | * needs to be disabled. A global MAC reset is issued to stop the | |
3172 | * hardware, and all transmit and receive resources are freed. | |
3173 | **/ | |
3174 | static int e1000_close(struct net_device *netdev) | |
3175 | { | |
3176 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3177 | ||
3178 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
3179 | e1000e_down(adapter); | |
3180 | e1000_power_down_phy(adapter); | |
3181 | e1000_free_irq(adapter); | |
3182 | ||
3183 | e1000e_free_tx_resources(adapter); | |
3184 | e1000e_free_rx_resources(adapter); | |
3185 | ||
ad68076e BA |
3186 | /* |
3187 | * kill manageability vlan ID if supported, but not if a vlan with | |
3188 | * the same ID is registered on the host OS (let 8021q kill it) | |
3189 | */ | |
bc7f75fa AK |
3190 | if ((adapter->hw.mng_cookie.status & |
3191 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
3192 | !(adapter->vlgrp && | |
3193 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
3194 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
3195 | ||
ad68076e BA |
3196 | /* |
3197 | * If AMT is enabled, let the firmware know that the network | |
3198 | * interface is now closed | |
3199 | */ | |
c43bc57e | 3200 | if (adapter->flags & FLAG_HAS_AMT) |
bc7f75fa AK |
3201 | e1000_release_hw_control(adapter); |
3202 | ||
3203 | return 0; | |
3204 | } | |
3205 | /** | |
3206 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
3207 | * @netdev: network interface device structure | |
3208 | * @p: pointer to an address structure | |
3209 | * | |
3210 | * Returns 0 on success, negative on failure | |
3211 | **/ | |
3212 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
3213 | { | |
3214 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3215 | struct sockaddr *addr = p; | |
3216 | ||
3217 | if (!is_valid_ether_addr(addr->sa_data)) | |
3218 | return -EADDRNOTAVAIL; | |
3219 | ||
3220 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3221 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
3222 | ||
3223 | e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
3224 | ||
3225 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
3226 | /* activate the work around */ | |
3227 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
3228 | ||
ad68076e BA |
3229 | /* |
3230 | * Hold a copy of the LAA in RAR[14] This is done so that | |
bc7f75fa AK |
3231 | * between the time RAR[0] gets clobbered and the time it |
3232 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
3233 | * of the RARs and no incoming packets directed to this port | |
3234 | * are dropped. Eventually the LAA will be in RAR[0] and | |
ad68076e BA |
3235 | * RAR[14] |
3236 | */ | |
bc7f75fa AK |
3237 | e1000e_rar_set(&adapter->hw, |
3238 | adapter->hw.mac.addr, | |
3239 | adapter->hw.mac.rar_entry_count - 1); | |
3240 | } | |
3241 | ||
3242 | return 0; | |
3243 | } | |
3244 | ||
a8f88ff5 JB |
3245 | /** |
3246 | * e1000e_update_phy_task - work thread to update phy | |
3247 | * @work: pointer to our work struct | |
3248 | * | |
3249 | * this worker thread exists because we must acquire a | |
3250 | * semaphore to read the phy, which we could msleep while | |
3251 | * waiting for it, and we can't msleep in a timer. | |
3252 | **/ | |
3253 | static void e1000e_update_phy_task(struct work_struct *work) | |
3254 | { | |
3255 | struct e1000_adapter *adapter = container_of(work, | |
3256 | struct e1000_adapter, update_phy_task); | |
3257 | e1000_get_phy_info(&adapter->hw); | |
3258 | } | |
3259 | ||
ad68076e BA |
3260 | /* |
3261 | * Need to wait a few seconds after link up to get diagnostic information from | |
3262 | * the phy | |
3263 | */ | |
bc7f75fa AK |
3264 | static void e1000_update_phy_info(unsigned long data) |
3265 | { | |
3266 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
a8f88ff5 | 3267 | schedule_work(&adapter->update_phy_task); |
bc7f75fa AK |
3268 | } |
3269 | ||
3270 | /** | |
3271 | * e1000e_update_stats - Update the board statistics counters | |
3272 | * @adapter: board private structure | |
3273 | **/ | |
3274 | void e1000e_update_stats(struct e1000_adapter *adapter) | |
3275 | { | |
3276 | struct e1000_hw *hw = &adapter->hw; | |
3277 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
3278 | |
3279 | /* | |
3280 | * Prevent stats update while adapter is being reset, or if the pci | |
3281 | * connection is down. | |
3282 | */ | |
3283 | if (adapter->link_speed == 0) | |
3284 | return; | |
3285 | if (pci_channel_offline(pdev)) | |
3286 | return; | |
3287 | ||
bc7f75fa AK |
3288 | adapter->stats.crcerrs += er32(CRCERRS); |
3289 | adapter->stats.gprc += er32(GPRC); | |
7c25769f BA |
3290 | adapter->stats.gorc += er32(GORCL); |
3291 | er32(GORCH); /* Clear gorc */ | |
bc7f75fa AK |
3292 | adapter->stats.bprc += er32(BPRC); |
3293 | adapter->stats.mprc += er32(MPRC); | |
3294 | adapter->stats.roc += er32(ROC); | |
3295 | ||
bc7f75fa AK |
3296 | adapter->stats.mpc += er32(MPC); |
3297 | adapter->stats.scc += er32(SCC); | |
3298 | adapter->stats.ecol += er32(ECOL); | |
3299 | adapter->stats.mcc += er32(MCC); | |
3300 | adapter->stats.latecol += er32(LATECOL); | |
3301 | adapter->stats.dc += er32(DC); | |
bc7f75fa AK |
3302 | adapter->stats.xonrxc += er32(XONRXC); |
3303 | adapter->stats.xontxc += er32(XONTXC); | |
3304 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3305 | adapter->stats.xofftxc += er32(XOFFTXC); | |
bc7f75fa | 3306 | adapter->stats.gptc += er32(GPTC); |
7c25769f BA |
3307 | adapter->stats.gotc += er32(GOTCL); |
3308 | er32(GOTCH); /* Clear gotc */ | |
bc7f75fa AK |
3309 | adapter->stats.rnbc += er32(RNBC); |
3310 | adapter->stats.ruc += er32(RUC); | |
bc7f75fa AK |
3311 | |
3312 | adapter->stats.mptc += er32(MPTC); | |
3313 | adapter->stats.bptc += er32(BPTC); | |
3314 | ||
3315 | /* used for adaptive IFS */ | |
3316 | ||
3317 | hw->mac.tx_packet_delta = er32(TPT); | |
3318 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
3319 | hw->mac.collision_delta = er32(COLC); | |
3320 | adapter->stats.colc += hw->mac.collision_delta; | |
3321 | ||
3322 | adapter->stats.algnerrc += er32(ALGNERRC); | |
3323 | adapter->stats.rxerrc += er32(RXERRC); | |
4662e82b BA |
3324 | if (hw->mac.type != e1000_82574) |
3325 | adapter->stats.tncrs += er32(TNCRS); | |
bc7f75fa AK |
3326 | adapter->stats.cexterr += er32(CEXTERR); |
3327 | adapter->stats.tsctc += er32(TSCTC); | |
3328 | adapter->stats.tsctfc += er32(TSCTFC); | |
3329 | ||
bc7f75fa | 3330 | /* Fill out the OS statistics structure */ |
bc7f75fa AK |
3331 | adapter->net_stats.multicast = adapter->stats.mprc; |
3332 | adapter->net_stats.collisions = adapter->stats.colc; | |
3333 | ||
3334 | /* Rx Errors */ | |
3335 | ||
ad68076e BA |
3336 | /* |
3337 | * RLEC on some newer hardware can be incorrect so build | |
3338 | * our own version based on RUC and ROC | |
3339 | */ | |
bc7f75fa AK |
3340 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3341 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
3342 | adapter->stats.ruc + adapter->stats.roc + | |
3343 | adapter->stats.cexterr; | |
3344 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + | |
3345 | adapter->stats.roc; | |
3346 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
3347 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
3348 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
3349 | ||
3350 | /* Tx Errors */ | |
3351 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3352 | adapter->stats.latecol; | |
3353 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3354 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3355 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3356 | ||
3357 | /* Tx Dropped needs to be maintained elsewhere */ | |
3358 | ||
bc7f75fa AK |
3359 | /* Management Stats */ |
3360 | adapter->stats.mgptc += er32(MGTPTC); | |
3361 | adapter->stats.mgprc += er32(MGTPRC); | |
3362 | adapter->stats.mgpdc += er32(MGTPDC); | |
bc7f75fa AK |
3363 | } |
3364 | ||
7c25769f BA |
3365 | /** |
3366 | * e1000_phy_read_status - Update the PHY register status snapshot | |
3367 | * @adapter: board private structure | |
3368 | **/ | |
3369 | static void e1000_phy_read_status(struct e1000_adapter *adapter) | |
3370 | { | |
3371 | struct e1000_hw *hw = &adapter->hw; | |
3372 | struct e1000_phy_regs *phy = &adapter->phy_regs; | |
3373 | int ret_val; | |
7c25769f BA |
3374 | |
3375 | if ((er32(STATUS) & E1000_STATUS_LU) && | |
3376 | (adapter->hw.phy.media_type == e1000_media_type_copper)) { | |
3377 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); | |
3378 | ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); | |
3379 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); | |
3380 | ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); | |
3381 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); | |
3382 | ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); | |
3383 | ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); | |
3384 | ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); | |
3385 | if (ret_val) | |
44defeb3 | 3386 | e_warn("Error reading PHY register\n"); |
7c25769f BA |
3387 | } else { |
3388 | /* | |
3389 | * Do not read PHY registers if link is not up | |
3390 | * Set values to typical power-on defaults | |
3391 | */ | |
3392 | phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); | |
3393 | phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | | |
3394 | BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | | |
3395 | BMSR_ERCAP); | |
3396 | phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | | |
3397 | ADVERTISE_ALL | ADVERTISE_CSMA); | |
3398 | phy->lpa = 0; | |
3399 | phy->expansion = EXPANSION_ENABLENPAGE; | |
3400 | phy->ctrl1000 = ADVERTISE_1000FULL; | |
3401 | phy->stat1000 = 0; | |
3402 | phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); | |
3403 | } | |
7c25769f BA |
3404 | } |
3405 | ||
bc7f75fa AK |
3406 | static void e1000_print_link_info(struct e1000_adapter *adapter) |
3407 | { | |
bc7f75fa AK |
3408 | struct e1000_hw *hw = &adapter->hw; |
3409 | u32 ctrl = er32(CTRL); | |
3410 | ||
8f12fe86 BA |
3411 | /* Link status message must follow this format for user tools */ |
3412 | printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, " | |
3413 | "Flow Control: %s\n", | |
3414 | adapter->netdev->name, | |
44defeb3 JK |
3415 | adapter->link_speed, |
3416 | (adapter->link_duplex == FULL_DUPLEX) ? | |
3417 | "Full Duplex" : "Half Duplex", | |
3418 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? | |
3419 | "RX/TX" : | |
3420 | ((ctrl & E1000_CTRL_RFCE) ? "RX" : | |
3421 | ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
bc7f75fa AK |
3422 | } |
3423 | ||
318a94d6 JK |
3424 | static bool e1000_has_link(struct e1000_adapter *adapter) |
3425 | { | |
3426 | struct e1000_hw *hw = &adapter->hw; | |
3427 | bool link_active = 0; | |
3428 | s32 ret_val = 0; | |
3429 | ||
3430 | /* | |
3431 | * get_link_status is set on LSC (link status) interrupt or | |
3432 | * Rx sequence error interrupt. get_link_status will stay | |
3433 | * false until the check_for_link establishes link | |
3434 | * for copper adapters ONLY | |
3435 | */ | |
3436 | switch (hw->phy.media_type) { | |
3437 | case e1000_media_type_copper: | |
3438 | if (hw->mac.get_link_status) { | |
3439 | ret_val = hw->mac.ops.check_for_link(hw); | |
3440 | link_active = !hw->mac.get_link_status; | |
3441 | } else { | |
3442 | link_active = 1; | |
3443 | } | |
3444 | break; | |
3445 | case e1000_media_type_fiber: | |
3446 | ret_val = hw->mac.ops.check_for_link(hw); | |
3447 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); | |
3448 | break; | |
3449 | case e1000_media_type_internal_serdes: | |
3450 | ret_val = hw->mac.ops.check_for_link(hw); | |
3451 | link_active = adapter->hw.mac.serdes_has_link; | |
3452 | break; | |
3453 | default: | |
3454 | case e1000_media_type_unknown: | |
3455 | break; | |
3456 | } | |
3457 | ||
3458 | if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && | |
3459 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
3460 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
44defeb3 | 3461 | e_info("Gigabit has been disabled, downgrading speed\n"); |
318a94d6 JK |
3462 | } |
3463 | ||
3464 | return link_active; | |
3465 | } | |
3466 | ||
3467 | static void e1000e_enable_receives(struct e1000_adapter *adapter) | |
3468 | { | |
3469 | /* make sure the receive unit is started */ | |
3470 | if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && | |
3471 | (adapter->flags & FLAG_RX_RESTART_NOW)) { | |
3472 | struct e1000_hw *hw = &adapter->hw; | |
3473 | u32 rctl = er32(RCTL); | |
3474 | ew32(RCTL, rctl | E1000_RCTL_EN); | |
3475 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
3476 | } | |
3477 | } | |
3478 | ||
bc7f75fa AK |
3479 | /** |
3480 | * e1000_watchdog - Timer Call-back | |
3481 | * @data: pointer to adapter cast into an unsigned long | |
3482 | **/ | |
3483 | static void e1000_watchdog(unsigned long data) | |
3484 | { | |
3485 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
3486 | ||
3487 | /* Do the rest outside of interrupt context */ | |
3488 | schedule_work(&adapter->watchdog_task); | |
3489 | ||
3490 | /* TODO: make this use queue_delayed_work() */ | |
3491 | } | |
3492 | ||
3493 | static void e1000_watchdog_task(struct work_struct *work) | |
3494 | { | |
3495 | struct e1000_adapter *adapter = container_of(work, | |
3496 | struct e1000_adapter, watchdog_task); | |
bc7f75fa AK |
3497 | struct net_device *netdev = adapter->netdev; |
3498 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
75eb0fad | 3499 | struct e1000_phy_info *phy = &adapter->hw.phy; |
bc7f75fa AK |
3500 | struct e1000_ring *tx_ring = adapter->tx_ring; |
3501 | struct e1000_hw *hw = &adapter->hw; | |
3502 | u32 link, tctl; | |
bc7f75fa AK |
3503 | int tx_pending = 0; |
3504 | ||
318a94d6 JK |
3505 | link = e1000_has_link(adapter); |
3506 | if ((netif_carrier_ok(netdev)) && link) { | |
3507 | e1000e_enable_receives(adapter); | |
bc7f75fa | 3508 | goto link_up; |
bc7f75fa AK |
3509 | } |
3510 | ||
3511 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
3512 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
3513 | e1000_update_mng_vlan(adapter); | |
3514 | ||
bc7f75fa AK |
3515 | if (link) { |
3516 | if (!netif_carrier_ok(netdev)) { | |
3517 | bool txb2b = 1; | |
318a94d6 | 3518 | /* update snapshot of PHY registers on LSC */ |
7c25769f | 3519 | e1000_phy_read_status(adapter); |
bc7f75fa AK |
3520 | mac->ops.get_link_up_info(&adapter->hw, |
3521 | &adapter->link_speed, | |
3522 | &adapter->link_duplex); | |
3523 | e1000_print_link_info(adapter); | |
f4187b56 BA |
3524 | /* |
3525 | * On supported PHYs, check for duplex mismatch only | |
3526 | * if link has autonegotiated at 10/100 half | |
3527 | */ | |
3528 | if ((hw->phy.type == e1000_phy_igp_3 || | |
3529 | hw->phy.type == e1000_phy_bm) && | |
3530 | (hw->mac.autoneg == true) && | |
3531 | (adapter->link_speed == SPEED_10 || | |
3532 | adapter->link_speed == SPEED_100) && | |
3533 | (adapter->link_duplex == HALF_DUPLEX)) { | |
3534 | u16 autoneg_exp; | |
3535 | ||
3536 | e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); | |
3537 | ||
3538 | if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) | |
3539 | e_info("Autonegotiated half duplex but" | |
3540 | " link partner cannot autoneg. " | |
3541 | " Try forcing full duplex if " | |
3542 | "link gets many collisions.\n"); | |
3543 | } | |
3544 | ||
ad68076e BA |
3545 | /* |
3546 | * tweak tx_queue_len according to speed/duplex | |
3547 | * and adjust the timeout factor | |
3548 | */ | |
bc7f75fa AK |
3549 | netdev->tx_queue_len = adapter->tx_queue_len; |
3550 | adapter->tx_timeout_factor = 1; | |
3551 | switch (adapter->link_speed) { | |
3552 | case SPEED_10: | |
3553 | txb2b = 0; | |
3554 | netdev->tx_queue_len = 10; | |
10f1b492 | 3555 | adapter->tx_timeout_factor = 16; |
bc7f75fa AK |
3556 | break; |
3557 | case SPEED_100: | |
3558 | txb2b = 0; | |
3559 | netdev->tx_queue_len = 100; | |
3560 | /* maybe add some timeout factor ? */ | |
3561 | break; | |
3562 | } | |
3563 | ||
ad68076e BA |
3564 | /* |
3565 | * workaround: re-program speed mode bit after | |
3566 | * link-up event | |
3567 | */ | |
bc7f75fa AK |
3568 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
3569 | !txb2b) { | |
3570 | u32 tarc0; | |
e9ec2c0f | 3571 | tarc0 = er32(TARC(0)); |
bc7f75fa | 3572 | tarc0 &= ~SPEED_MODE_BIT; |
e9ec2c0f | 3573 | ew32(TARC(0), tarc0); |
bc7f75fa AK |
3574 | } |
3575 | ||
ad68076e BA |
3576 | /* |
3577 | * disable TSO for pcie and 10/100 speeds, to avoid | |
3578 | * some hardware issues | |
3579 | */ | |
bc7f75fa AK |
3580 | if (!(adapter->flags & FLAG_TSO_FORCE)) { |
3581 | switch (adapter->link_speed) { | |
3582 | case SPEED_10: | |
3583 | case SPEED_100: | |
44defeb3 | 3584 | e_info("10/100 speed: disabling TSO\n"); |
bc7f75fa AK |
3585 | netdev->features &= ~NETIF_F_TSO; |
3586 | netdev->features &= ~NETIF_F_TSO6; | |
3587 | break; | |
3588 | case SPEED_1000: | |
3589 | netdev->features |= NETIF_F_TSO; | |
3590 | netdev->features |= NETIF_F_TSO6; | |
3591 | break; | |
3592 | default: | |
3593 | /* oops */ | |
3594 | break; | |
3595 | } | |
3596 | } | |
3597 | ||
ad68076e BA |
3598 | /* |
3599 | * enable transmits in the hardware, need to do this | |
3600 | * after setting TARC(0) | |
3601 | */ | |
bc7f75fa AK |
3602 | tctl = er32(TCTL); |
3603 | tctl |= E1000_TCTL_EN; | |
3604 | ew32(TCTL, tctl); | |
3605 | ||
75eb0fad BA |
3606 | /* |
3607 | * Perform any post-link-up configuration before | |
3608 | * reporting link up. | |
3609 | */ | |
3610 | if (phy->ops.cfg_on_link_up) | |
3611 | phy->ops.cfg_on_link_up(hw); | |
3612 | ||
bc7f75fa | 3613 | netif_carrier_on(netdev); |
d55b53ff | 3614 | netif_tx_wake_all_queues(netdev); |
bc7f75fa AK |
3615 | |
3616 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3617 | mod_timer(&adapter->phy_info_timer, | |
3618 | round_jiffies(jiffies + 2 * HZ)); | |
bc7f75fa AK |
3619 | } |
3620 | } else { | |
3621 | if (netif_carrier_ok(netdev)) { | |
3622 | adapter->link_speed = 0; | |
3623 | adapter->link_duplex = 0; | |
8f12fe86 BA |
3624 | /* Link status message must follow this format */ |
3625 | printk(KERN_INFO "e1000e: %s NIC Link is Down\n", | |
3626 | adapter->netdev->name); | |
bc7f75fa | 3627 | netif_carrier_off(netdev); |
d55b53ff | 3628 | netif_tx_stop_all_queues(netdev); |
bc7f75fa AK |
3629 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
3630 | mod_timer(&adapter->phy_info_timer, | |
3631 | round_jiffies(jiffies + 2 * HZ)); | |
3632 | ||
3633 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) | |
3634 | schedule_work(&adapter->reset_task); | |
3635 | } | |
3636 | } | |
3637 | ||
3638 | link_up: | |
3639 | e1000e_update_stats(adapter); | |
3640 | ||
3641 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
3642 | adapter->tpt_old = adapter->stats.tpt; | |
3643 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
3644 | adapter->colc_old = adapter->stats.colc; | |
3645 | ||
7c25769f BA |
3646 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
3647 | adapter->gorc_old = adapter->stats.gorc; | |
3648 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
3649 | adapter->gotc_old = adapter->stats.gotc; | |
bc7f75fa AK |
3650 | |
3651 | e1000e_update_adaptive(&adapter->hw); | |
3652 | ||
3653 | if (!netif_carrier_ok(netdev)) { | |
3654 | tx_pending = (e1000_desc_unused(tx_ring) + 1 < | |
3655 | tx_ring->count); | |
3656 | if (tx_pending) { | |
ad68076e BA |
3657 | /* |
3658 | * We've lost link, so the controller stops DMA, | |
bc7f75fa AK |
3659 | * but we've got queued Tx work that's never going |
3660 | * to get done, so reset controller to flush Tx. | |
ad68076e BA |
3661 | * (Do the reset outside of interrupt context). |
3662 | */ | |
bc7f75fa AK |
3663 | adapter->tx_timeout_count++; |
3664 | schedule_work(&adapter->reset_task); | |
3665 | } | |
3666 | } | |
3667 | ||
ad68076e | 3668 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
4662e82b BA |
3669 | if (adapter->msix_entries) |
3670 | ew32(ICS, adapter->rx_ring->ims_val); | |
3671 | else | |
3672 | ew32(ICS, E1000_ICS_RXDMT0); | |
bc7f75fa AK |
3673 | |
3674 | /* Force detection of hung controller every watchdog period */ | |
3675 | adapter->detect_tx_hung = 1; | |
3676 | ||
ad68076e BA |
3677 | /* |
3678 | * With 82571 controllers, LAA may be overwritten due to controller | |
3679 | * reset from the other port. Set the appropriate LAA in RAR[0] | |
3680 | */ | |
bc7f75fa AK |
3681 | if (e1000e_get_laa_state_82571(hw)) |
3682 | e1000e_rar_set(hw, adapter->hw.mac.addr, 0); | |
3683 | ||
3684 | /* Reset the timer */ | |
3685 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3686 | mod_timer(&adapter->watchdog_timer, | |
3687 | round_jiffies(jiffies + 2 * HZ)); | |
3688 | } | |
3689 | ||
3690 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
3691 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
3692 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
3693 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
3694 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 | |
3695 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
3696 | ||
3697 | static int e1000_tso(struct e1000_adapter *adapter, | |
3698 | struct sk_buff *skb) | |
3699 | { | |
3700 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3701 | struct e1000_context_desc *context_desc; | |
3702 | struct e1000_buffer *buffer_info; | |
3703 | unsigned int i; | |
3704 | u32 cmd_length = 0; | |
3705 | u16 ipcse = 0, tucse, mss; | |
3706 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
3707 | int err; | |
3708 | ||
3709 | if (skb_is_gso(skb)) { | |
3710 | if (skb_header_cloned(skb)) { | |
3711 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
3712 | if (err) | |
3713 | return err; | |
3714 | } | |
3715 | ||
3716 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
3717 | mss = skb_shinfo(skb)->gso_size; | |
3718 | if (skb->protocol == htons(ETH_P_IP)) { | |
3719 | struct iphdr *iph = ip_hdr(skb); | |
3720 | iph->tot_len = 0; | |
3721 | iph->check = 0; | |
3722 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
3723 | iph->daddr, 0, | |
3724 | IPPROTO_TCP, | |
3725 | 0); | |
3726 | cmd_length = E1000_TXD_CMD_IP; | |
3727 | ipcse = skb_transport_offset(skb) - 1; | |
3728 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
3729 | ipv6_hdr(skb)->payload_len = 0; | |
3730 | tcp_hdr(skb)->check = | |
3731 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
3732 | &ipv6_hdr(skb)->daddr, | |
3733 | 0, IPPROTO_TCP, 0); | |
3734 | ipcse = 0; | |
3735 | } | |
3736 | ipcss = skb_network_offset(skb); | |
3737 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
3738 | tucss = skb_transport_offset(skb); | |
3739 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
3740 | tucse = 0; | |
3741 | ||
3742 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
3743 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); | |
3744 | ||
3745 | i = tx_ring->next_to_use; | |
3746 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
3747 | buffer_info = &tx_ring->buffer_info[i]; | |
3748 | ||
3749 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
3750 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
3751 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
3752 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
3753 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
3754 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
3755 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
3756 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
3757 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
3758 | ||
3759 | buffer_info->time_stamp = jiffies; | |
3760 | buffer_info->next_to_watch = i; | |
3761 | ||
3762 | i++; | |
3763 | if (i == tx_ring->count) | |
3764 | i = 0; | |
3765 | tx_ring->next_to_use = i; | |
3766 | ||
3767 | return 1; | |
3768 | } | |
3769 | ||
3770 | return 0; | |
3771 | } | |
3772 | ||
3773 | static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
3774 | { | |
3775 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3776 | struct e1000_context_desc *context_desc; | |
3777 | struct e1000_buffer *buffer_info; | |
3778 | unsigned int i; | |
3779 | u8 css; | |
af807c82 | 3780 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
bc7f75fa | 3781 | |
af807c82 DG |
3782 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
3783 | return 0; | |
bc7f75fa | 3784 | |
af807c82 DG |
3785 | switch (skb->protocol) { |
3786 | case __constant_htons(ETH_P_IP): | |
3787 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
3788 | cmd_len |= E1000_TXD_CMD_TCP; | |
3789 | break; | |
3790 | case __constant_htons(ETH_P_IPV6): | |
3791 | /* XXX not handling all IPV6 headers */ | |
3792 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
3793 | cmd_len |= E1000_TXD_CMD_TCP; | |
3794 | break; | |
3795 | default: | |
3796 | if (unlikely(net_ratelimit())) | |
3797 | e_warn("checksum_partial proto=%x!\n", skb->protocol); | |
3798 | break; | |
bc7f75fa AK |
3799 | } |
3800 | ||
af807c82 DG |
3801 | css = skb_transport_offset(skb); |
3802 | ||
3803 | i = tx_ring->next_to_use; | |
3804 | buffer_info = &tx_ring->buffer_info[i]; | |
3805 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
3806 | ||
3807 | context_desc->lower_setup.ip_config = 0; | |
3808 | context_desc->upper_setup.tcp_fields.tucss = css; | |
3809 | context_desc->upper_setup.tcp_fields.tucso = | |
3810 | css + skb->csum_offset; | |
3811 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
3812 | context_desc->tcp_seg_setup.data = 0; | |
3813 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
3814 | ||
3815 | buffer_info->time_stamp = jiffies; | |
3816 | buffer_info->next_to_watch = i; | |
3817 | ||
3818 | i++; | |
3819 | if (i == tx_ring->count) | |
3820 | i = 0; | |
3821 | tx_ring->next_to_use = i; | |
3822 | ||
3823 | return 1; | |
bc7f75fa AK |
3824 | } |
3825 | ||
3826 | #define E1000_MAX_PER_TXD 8192 | |
3827 | #define E1000_MAX_TXD_PWR 12 | |
3828 | ||
3829 | static int e1000_tx_map(struct e1000_adapter *adapter, | |
3830 | struct sk_buff *skb, unsigned int first, | |
3831 | unsigned int max_per_txd, unsigned int nr_frags, | |
3832 | unsigned int mss) | |
3833 | { | |
3834 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3835 | struct e1000_buffer *buffer_info; | |
3836 | unsigned int len = skb->len - skb->data_len; | |
3837 | unsigned int offset = 0, size, count = 0, i; | |
3838 | unsigned int f; | |
3839 | ||
3840 | i = tx_ring->next_to_use; | |
3841 | ||
3842 | while (len) { | |
3843 | buffer_info = &tx_ring->buffer_info[i]; | |
3844 | size = min(len, max_per_txd); | |
3845 | ||
3846 | /* Workaround for premature desc write-backs | |
3847 | * in TSO mode. Append 4-byte sentinel desc */ | |
3848 | if (mss && !nr_frags && size == len && size > 8) | |
3849 | size -= 4; | |
3850 | ||
3851 | buffer_info->length = size; | |
3852 | /* set time_stamp *before* dma to help avoid a possible race */ | |
3853 | buffer_info->time_stamp = jiffies; | |
3854 | buffer_info->dma = | |
3855 | pci_map_single(adapter->pdev, | |
3856 | skb->data + offset, | |
3857 | size, | |
3858 | PCI_DMA_TODEVICE); | |
8d8bb39b | 3859 | if (pci_dma_mapping_error(adapter->pdev, buffer_info->dma)) { |
bc7f75fa AK |
3860 | dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); |
3861 | adapter->tx_dma_failed++; | |
3862 | return -1; | |
3863 | } | |
3864 | buffer_info->next_to_watch = i; | |
3865 | ||
3866 | len -= size; | |
3867 | offset += size; | |
3868 | count++; | |
3869 | i++; | |
3870 | if (i == tx_ring->count) | |
3871 | i = 0; | |
3872 | } | |
3873 | ||
3874 | for (f = 0; f < nr_frags; f++) { | |
3875 | struct skb_frag_struct *frag; | |
3876 | ||
3877 | frag = &skb_shinfo(skb)->frags[f]; | |
3878 | len = frag->size; | |
3879 | offset = frag->page_offset; | |
3880 | ||
3881 | while (len) { | |
3882 | buffer_info = &tx_ring->buffer_info[i]; | |
3883 | size = min(len, max_per_txd); | |
3884 | /* Workaround for premature desc write-backs | |
3885 | * in TSO mode. Append 4-byte sentinel desc */ | |
3886 | if (mss && f == (nr_frags-1) && size == len && size > 8) | |
3887 | size -= 4; | |
3888 | ||
3889 | buffer_info->length = size; | |
3890 | buffer_info->time_stamp = jiffies; | |
3891 | buffer_info->dma = | |
3892 | pci_map_page(adapter->pdev, | |
3893 | frag->page, | |
3894 | offset, | |
3895 | size, | |
3896 | PCI_DMA_TODEVICE); | |
8d8bb39b FT |
3897 | if (pci_dma_mapping_error(adapter->pdev, |
3898 | buffer_info->dma)) { | |
bc7f75fa AK |
3899 | dev_err(&adapter->pdev->dev, |
3900 | "TX DMA page map failed\n"); | |
3901 | adapter->tx_dma_failed++; | |
3902 | return -1; | |
3903 | } | |
3904 | ||
3905 | buffer_info->next_to_watch = i; | |
3906 | ||
3907 | len -= size; | |
3908 | offset += size; | |
3909 | count++; | |
3910 | ||
3911 | i++; | |
3912 | if (i == tx_ring->count) | |
3913 | i = 0; | |
3914 | } | |
3915 | } | |
3916 | ||
3917 | if (i == 0) | |
3918 | i = tx_ring->count - 1; | |
3919 | else | |
3920 | i--; | |
3921 | ||
3922 | tx_ring->buffer_info[i].skb = skb; | |
3923 | tx_ring->buffer_info[first].next_to_watch = i; | |
3924 | ||
3925 | return count; | |
3926 | } | |
3927 | ||
3928 | static void e1000_tx_queue(struct e1000_adapter *adapter, | |
3929 | int tx_flags, int count) | |
3930 | { | |
3931 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3932 | struct e1000_tx_desc *tx_desc = NULL; | |
3933 | struct e1000_buffer *buffer_info; | |
3934 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
3935 | unsigned int i; | |
3936 | ||
3937 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
3938 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
3939 | E1000_TXD_CMD_TSE; | |
3940 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3941 | ||
3942 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
3943 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
3944 | } | |
3945 | ||
3946 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
3947 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
3948 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3949 | } | |
3950 | ||
3951 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
3952 | txd_lower |= E1000_TXD_CMD_VLE; | |
3953 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3954 | } | |
3955 | ||
3956 | i = tx_ring->next_to_use; | |
3957 | ||
3958 | while (count--) { | |
3959 | buffer_info = &tx_ring->buffer_info[i]; | |
3960 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3961 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3962 | tx_desc->lower.data = | |
3963 | cpu_to_le32(txd_lower | buffer_info->length); | |
3964 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
3965 | ||
3966 | i++; | |
3967 | if (i == tx_ring->count) | |
3968 | i = 0; | |
3969 | } | |
3970 | ||
3971 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3972 | ||
ad68076e BA |
3973 | /* |
3974 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
3975 | * know there are new descriptors to fetch. (Only |
3976 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
3977 | * such as IA-64). |
3978 | */ | |
bc7f75fa AK |
3979 | wmb(); |
3980 | ||
3981 | tx_ring->next_to_use = i; | |
3982 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
ad68076e BA |
3983 | /* |
3984 | * we need this if more than one processor can write to our tail | |
3985 | * at a time, it synchronizes IO on IA64/Altix systems | |
3986 | */ | |
bc7f75fa AK |
3987 | mmiowb(); |
3988 | } | |
3989 | ||
3990 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
3991 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
3992 | struct sk_buff *skb) | |
3993 | { | |
3994 | struct e1000_hw *hw = &adapter->hw; | |
3995 | u16 length, offset; | |
3996 | ||
3997 | if (vlan_tx_tag_present(skb)) { | |
3998 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) | |
3999 | && (adapter->hw.mng_cookie.status & | |
4000 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) | |
4001 | return 0; | |
4002 | } | |
4003 | ||
4004 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
4005 | return 0; | |
4006 | ||
4007 | if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) | |
4008 | return 0; | |
4009 | ||
4010 | { | |
4011 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); | |
4012 | struct udphdr *udp; | |
4013 | ||
4014 | if (ip->protocol != IPPROTO_UDP) | |
4015 | return 0; | |
4016 | ||
4017 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
4018 | if (ntohs(udp->dest) != 67) | |
4019 | return 0; | |
4020 | ||
4021 | offset = (u8 *)udp + 8 - skb->data; | |
4022 | length = skb->len - offset; | |
4023 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
4024 | } | |
4025 | ||
4026 | return 0; | |
4027 | } | |
4028 | ||
4029 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4030 | { | |
4031 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4032 | ||
4033 | netif_stop_queue(netdev); | |
ad68076e BA |
4034 | /* |
4035 | * Herbert's original patch had: | |
bc7f75fa | 4036 | * smp_mb__after_netif_stop_queue(); |
ad68076e BA |
4037 | * but since that doesn't exist yet, just open code it. |
4038 | */ | |
bc7f75fa AK |
4039 | smp_mb(); |
4040 | ||
ad68076e BA |
4041 | /* |
4042 | * We need to check again in a case another CPU has just | |
4043 | * made room available. | |
4044 | */ | |
bc7f75fa AK |
4045 | if (e1000_desc_unused(adapter->tx_ring) < size) |
4046 | return -EBUSY; | |
4047 | ||
4048 | /* A reprieve! */ | |
4049 | netif_start_queue(netdev); | |
4050 | ++adapter->restart_queue; | |
4051 | return 0; | |
4052 | } | |
4053 | ||
4054 | static int e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4055 | { | |
4056 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4057 | ||
4058 | if (e1000_desc_unused(adapter->tx_ring) >= size) | |
4059 | return 0; | |
4060 | return __e1000_maybe_stop_tx(netdev, size); | |
4061 | } | |
4062 | ||
4063 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) | |
4064 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
4065 | { | |
4066 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4067 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4068 | unsigned int first; | |
4069 | unsigned int max_per_txd = E1000_MAX_PER_TXD; | |
4070 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
4071 | unsigned int tx_flags = 0; | |
4e6c709c | 4072 | unsigned int len = skb->len - skb->data_len; |
bc7f75fa | 4073 | unsigned long irq_flags; |
4e6c709c AK |
4074 | unsigned int nr_frags; |
4075 | unsigned int mss; | |
bc7f75fa AK |
4076 | int count = 0; |
4077 | int tso; | |
4078 | unsigned int f; | |
bc7f75fa AK |
4079 | |
4080 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
4081 | dev_kfree_skb_any(skb); | |
4082 | return NETDEV_TX_OK; | |
4083 | } | |
4084 | ||
4085 | if (skb->len <= 0) { | |
4086 | dev_kfree_skb_any(skb); | |
4087 | return NETDEV_TX_OK; | |
4088 | } | |
4089 | ||
4090 | mss = skb_shinfo(skb)->gso_size; | |
ad68076e BA |
4091 | /* |
4092 | * The controller does a simple calculation to | |
bc7f75fa AK |
4093 | * make sure there is enough room in the FIFO before |
4094 | * initiating the DMA for each buffer. The calc is: | |
4095 | * 4 = ceil(buffer len/mss). To make sure we don't | |
4096 | * overrun the FIFO, adjust the max buffer len if mss | |
ad68076e BA |
4097 | * drops. |
4098 | */ | |
bc7f75fa AK |
4099 | if (mss) { |
4100 | u8 hdr_len; | |
4101 | max_per_txd = min(mss << 2, max_per_txd); | |
4102 | max_txd_pwr = fls(max_per_txd) - 1; | |
4103 | ||
ad68076e BA |
4104 | /* |
4105 | * TSO Workaround for 82571/2/3 Controllers -- if skb->data | |
4106 | * points to just header, pull a few bytes of payload from | |
4107 | * frags into skb->data | |
4108 | */ | |
bc7f75fa | 4109 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
ad68076e BA |
4110 | /* |
4111 | * we do this workaround for ES2LAN, but it is un-necessary, | |
4112 | * avoiding it could save a lot of cycles | |
4113 | */ | |
4e6c709c | 4114 | if (skb->data_len && (hdr_len == len)) { |
bc7f75fa AK |
4115 | unsigned int pull_size; |
4116 | ||
4117 | pull_size = min((unsigned int)4, skb->data_len); | |
4118 | if (!__pskb_pull_tail(skb, pull_size)) { | |
44defeb3 | 4119 | e_err("__pskb_pull_tail failed.\n"); |
bc7f75fa AK |
4120 | dev_kfree_skb_any(skb); |
4121 | return NETDEV_TX_OK; | |
4122 | } | |
4123 | len = skb->len - skb->data_len; | |
4124 | } | |
4125 | } | |
4126 | ||
4127 | /* reserve a descriptor for the offload context */ | |
4128 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
4129 | count++; | |
4130 | count++; | |
4131 | ||
4132 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
4133 | ||
4134 | nr_frags = skb_shinfo(skb)->nr_frags; | |
4135 | for (f = 0; f < nr_frags; f++) | |
4136 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
4137 | max_txd_pwr); | |
4138 | ||
4139 | if (adapter->hw.mac.tx_pkt_filtering) | |
4140 | e1000_transfer_dhcp_info(adapter, skb); | |
4141 | ||
4142 | if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags)) | |
4143 | /* Collision - tell upper layer to requeue */ | |
4144 | return NETDEV_TX_LOCKED; | |
4145 | ||
ad68076e BA |
4146 | /* |
4147 | * need: count + 2 desc gap to keep tail from touching | |
4148 | * head, otherwise try next time | |
4149 | */ | |
bc7f75fa AK |
4150 | if (e1000_maybe_stop_tx(netdev, count + 2)) { |
4151 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
4152 | return NETDEV_TX_BUSY; | |
4153 | } | |
4154 | ||
4155 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
4156 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
4157 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
4158 | } | |
4159 | ||
4160 | first = tx_ring->next_to_use; | |
4161 | ||
4162 | tso = e1000_tso(adapter, skb); | |
4163 | if (tso < 0) { | |
4164 | dev_kfree_skb_any(skb); | |
4165 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
4166 | return NETDEV_TX_OK; | |
4167 | } | |
4168 | ||
4169 | if (tso) | |
4170 | tx_flags |= E1000_TX_FLAGS_TSO; | |
4171 | else if (e1000_tx_csum(adapter, skb)) | |
4172 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
4173 | ||
ad68076e BA |
4174 | /* |
4175 | * Old method was to assume IPv4 packet by default if TSO was enabled. | |
bc7f75fa | 4176 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
ad68076e BA |
4177 | * no longer assume, we must. |
4178 | */ | |
bc7f75fa AK |
4179 | if (skb->protocol == htons(ETH_P_IP)) |
4180 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
4181 | ||
4182 | count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); | |
4183 | if (count < 0) { | |
4184 | /* handle pci_map_single() error in e1000_tx_map */ | |
4185 | dev_kfree_skb_any(skb); | |
4186 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
7b5dfe1a | 4187 | return NETDEV_TX_OK; |
bc7f75fa AK |
4188 | } |
4189 | ||
4190 | e1000_tx_queue(adapter, tx_flags, count); | |
4191 | ||
4192 | netdev->trans_start = jiffies; | |
4193 | ||
4194 | /* Make sure there is space in the ring for the next send. */ | |
4195 | e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); | |
4196 | ||
4197 | spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); | |
4198 | return NETDEV_TX_OK; | |
4199 | } | |
4200 | ||
4201 | /** | |
4202 | * e1000_tx_timeout - Respond to a Tx Hang | |
4203 | * @netdev: network interface device structure | |
4204 | **/ | |
4205 | static void e1000_tx_timeout(struct net_device *netdev) | |
4206 | { | |
4207 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4208 | ||
4209 | /* Do the reset outside of interrupt context */ | |
4210 | adapter->tx_timeout_count++; | |
4211 | schedule_work(&adapter->reset_task); | |
4212 | } | |
4213 | ||
4214 | static void e1000_reset_task(struct work_struct *work) | |
4215 | { | |
4216 | struct e1000_adapter *adapter; | |
4217 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
4218 | ||
4219 | e1000e_reinit_locked(adapter); | |
4220 | } | |
4221 | ||
4222 | /** | |
4223 | * e1000_get_stats - Get System Network Statistics | |
4224 | * @netdev: network interface device structure | |
4225 | * | |
4226 | * Returns the address of the device statistics structure. | |
4227 | * The statistics are actually updated from the timer callback. | |
4228 | **/ | |
4229 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) | |
4230 | { | |
4231 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4232 | ||
4233 | /* only return the current stats */ | |
4234 | return &adapter->net_stats; | |
4235 | } | |
4236 | ||
4237 | /** | |
4238 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
4239 | * @netdev: network interface device structure | |
4240 | * @new_mtu: new value for maximum frame size | |
4241 | * | |
4242 | * Returns 0 on success, negative on failure | |
4243 | **/ | |
4244 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
4245 | { | |
4246 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4247 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
4248 | ||
d53f706d | 4249 | if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || |
bc7f75fa | 4250 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
44defeb3 | 4251 | e_err("Invalid MTU setting\n"); |
bc7f75fa AK |
4252 | return -EINVAL; |
4253 | } | |
4254 | ||
4255 | /* Jumbo frame size limits */ | |
4256 | if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) { | |
4257 | if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
44defeb3 | 4258 | e_err("Jumbo Frames not supported.\n"); |
bc7f75fa AK |
4259 | return -EINVAL; |
4260 | } | |
4261 | if (adapter->hw.phy.type == e1000_phy_ife) { | |
44defeb3 | 4262 | e_err("Jumbo Frames not supported.\n"); |
bc7f75fa AK |
4263 | return -EINVAL; |
4264 | } | |
4265 | } | |
4266 | ||
4267 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 | |
4268 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
44defeb3 | 4269 | e_err("MTU > 9216 not supported.\n"); |
bc7f75fa AK |
4270 | return -EINVAL; |
4271 | } | |
4272 | ||
4273 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
4274 | msleep(1); | |
4275 | /* e1000e_down has a dependency on max_frame_size */ | |
318a94d6 | 4276 | adapter->max_frame_size = max_frame; |
bc7f75fa AK |
4277 | if (netif_running(netdev)) |
4278 | e1000e_down(adapter); | |
4279 | ||
ad68076e BA |
4280 | /* |
4281 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
bc7f75fa AK |
4282 | * means we reserve 2 more, this pushes us to allocate from the next |
4283 | * larger slab size. | |
ad68076e | 4284 | * i.e. RXBUFFER_2048 --> size-4096 slab |
97ac8cae BA |
4285 | * However with the new *_jumbo_rx* routines, jumbo receives will use |
4286 | * fragmented skbs | |
ad68076e | 4287 | */ |
bc7f75fa AK |
4288 | |
4289 | if (max_frame <= 256) | |
4290 | adapter->rx_buffer_len = 256; | |
4291 | else if (max_frame <= 512) | |
4292 | adapter->rx_buffer_len = 512; | |
4293 | else if (max_frame <= 1024) | |
4294 | adapter->rx_buffer_len = 1024; | |
4295 | else if (max_frame <= 2048) | |
4296 | adapter->rx_buffer_len = 2048; | |
4297 | else | |
4298 | adapter->rx_buffer_len = 4096; | |
4299 | ||
4300 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
4301 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
4302 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
4303 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN | |
ad68076e | 4304 | + ETH_FCS_LEN; |
bc7f75fa | 4305 | |
44defeb3 | 4306 | e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
bc7f75fa AK |
4307 | netdev->mtu = new_mtu; |
4308 | ||
4309 | if (netif_running(netdev)) | |
4310 | e1000e_up(adapter); | |
4311 | else | |
4312 | e1000e_reset(adapter); | |
4313 | ||
4314 | clear_bit(__E1000_RESETTING, &adapter->state); | |
4315 | ||
4316 | return 0; | |
4317 | } | |
4318 | ||
4319 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
4320 | int cmd) | |
4321 | { | |
4322 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4323 | struct mii_ioctl_data *data = if_mii(ifr); | |
bc7f75fa | 4324 | |
318a94d6 | 4325 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
4326 | return -EOPNOTSUPP; |
4327 | ||
4328 | switch (cmd) { | |
4329 | case SIOCGMIIPHY: | |
4330 | data->phy_id = adapter->hw.phy.addr; | |
4331 | break; | |
4332 | case SIOCGMIIREG: | |
4333 | if (!capable(CAP_NET_ADMIN)) | |
4334 | return -EPERM; | |
7c25769f BA |
4335 | switch (data->reg_num & 0x1F) { |
4336 | case MII_BMCR: | |
4337 | data->val_out = adapter->phy_regs.bmcr; | |
4338 | break; | |
4339 | case MII_BMSR: | |
4340 | data->val_out = adapter->phy_regs.bmsr; | |
4341 | break; | |
4342 | case MII_PHYSID1: | |
4343 | data->val_out = (adapter->hw.phy.id >> 16); | |
4344 | break; | |
4345 | case MII_PHYSID2: | |
4346 | data->val_out = (adapter->hw.phy.id & 0xFFFF); | |
4347 | break; | |
4348 | case MII_ADVERTISE: | |
4349 | data->val_out = adapter->phy_regs.advertise; | |
4350 | break; | |
4351 | case MII_LPA: | |
4352 | data->val_out = adapter->phy_regs.lpa; | |
4353 | break; | |
4354 | case MII_EXPANSION: | |
4355 | data->val_out = adapter->phy_regs.expansion; | |
4356 | break; | |
4357 | case MII_CTRL1000: | |
4358 | data->val_out = adapter->phy_regs.ctrl1000; | |
4359 | break; | |
4360 | case MII_STAT1000: | |
4361 | data->val_out = adapter->phy_regs.stat1000; | |
4362 | break; | |
4363 | case MII_ESTATUS: | |
4364 | data->val_out = adapter->phy_regs.estatus; | |
4365 | break; | |
4366 | default: | |
bc7f75fa AK |
4367 | return -EIO; |
4368 | } | |
bc7f75fa AK |
4369 | break; |
4370 | case SIOCSMIIREG: | |
4371 | default: | |
4372 | return -EOPNOTSUPP; | |
4373 | } | |
4374 | return 0; | |
4375 | } | |
4376 | ||
4377 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4378 | { | |
4379 | switch (cmd) { | |
4380 | case SIOCGMIIPHY: | |
4381 | case SIOCGMIIREG: | |
4382 | case SIOCSMIIREG: | |
4383 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4384 | default: | |
4385 | return -EOPNOTSUPP; | |
4386 | } | |
4387 | } | |
4388 | ||
4389 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) | |
4390 | { | |
4391 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4392 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4393 | struct e1000_hw *hw = &adapter->hw; | |
4394 | u32 ctrl, ctrl_ext, rctl, status; | |
4395 | u32 wufc = adapter->wol; | |
4396 | int retval = 0; | |
4397 | ||
4398 | netif_device_detach(netdev); | |
4399 | ||
4400 | if (netif_running(netdev)) { | |
4401 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
4402 | e1000e_down(adapter); | |
4403 | e1000_free_irq(adapter); | |
4404 | } | |
4662e82b | 4405 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
4406 | |
4407 | retval = pci_save_state(pdev); | |
4408 | if (retval) | |
4409 | return retval; | |
4410 | ||
4411 | status = er32(STATUS); | |
4412 | if (status & E1000_STATUS_LU) | |
4413 | wufc &= ~E1000_WUFC_LNKC; | |
4414 | ||
4415 | if (wufc) { | |
4416 | e1000_setup_rctl(adapter); | |
4417 | e1000_set_multi(netdev); | |
4418 | ||
4419 | /* turn on all-multi mode if wake on multicast is enabled */ | |
4420 | if (wufc & E1000_WUFC_MC) { | |
4421 | rctl = er32(RCTL); | |
4422 | rctl |= E1000_RCTL_MPE; | |
4423 | ew32(RCTL, rctl); | |
4424 | } | |
4425 | ||
4426 | ctrl = er32(CTRL); | |
4427 | /* advertise wake from D3Cold */ | |
4428 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4429 | /* phy power management enable */ | |
4430 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4431 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4432 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
4433 | ew32(CTRL, ctrl); | |
4434 | ||
318a94d6 JK |
4435 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
4436 | adapter->hw.phy.media_type == | |
4437 | e1000_media_type_internal_serdes) { | |
bc7f75fa AK |
4438 | /* keep the laser running in D3 */ |
4439 | ctrl_ext = er32(CTRL_EXT); | |
4440 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
4441 | ew32(CTRL_EXT, ctrl_ext); | |
4442 | } | |
4443 | ||
97ac8cae BA |
4444 | if (adapter->flags & FLAG_IS_ICH) |
4445 | e1000e_disable_gig_wol_ich8lan(&adapter->hw); | |
4446 | ||
bc7f75fa AK |
4447 | /* Allow time for pending master requests to run */ |
4448 | e1000e_disable_pcie_master(&adapter->hw); | |
4449 | ||
4450 | ew32(WUC, E1000_WUC_PME_EN); | |
4451 | ew32(WUFC, wufc); | |
4452 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
4453 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
4454 | } else { | |
4455 | ew32(WUC, 0); | |
4456 | ew32(WUFC, 0); | |
4457 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4458 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
4459 | } | |
4460 | ||
bc7f75fa AK |
4461 | /* make sure adapter isn't asleep if manageability is enabled */ |
4462 | if (adapter->flags & FLAG_MNG_PT_ENABLED) { | |
4463 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
4464 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
4465 | } | |
4466 | ||
4467 | if (adapter->hw.phy.type == e1000_phy_igp_3) | |
4468 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); | |
4469 | ||
ad68076e BA |
4470 | /* |
4471 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
4472 | * would have already happened in close and is redundant. | |
4473 | */ | |
bc7f75fa AK |
4474 | e1000_release_hw_control(adapter); |
4475 | ||
4476 | pci_disable_device(pdev); | |
4477 | ||
005cbdfc AD |
4478 | /* |
4479 | * The pci-e switch on some quad port adapters will report a | |
4480 | * correctable error when the MAC transitions from D0 to D3. To | |
4481 | * prevent this we need to mask off the correctable errors on the | |
4482 | * downstream port of the pci-e switch. | |
4483 | */ | |
4484 | if (adapter->flags & FLAG_IS_QUAD_PORT) { | |
4485 | struct pci_dev *us_dev = pdev->bus->self; | |
4486 | int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); | |
4487 | u16 devctl; | |
4488 | ||
4489 | pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); | |
4490 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, | |
4491 | (devctl & ~PCI_EXP_DEVCTL_CERE)); | |
4492 | ||
4493 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4494 | ||
4495 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); | |
4496 | } else { | |
4497 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4498 | } | |
bc7f75fa AK |
4499 | |
4500 | return 0; | |
4501 | } | |
4502 | ||
1eae4eb2 AK |
4503 | static void e1000e_disable_l1aspm(struct pci_dev *pdev) |
4504 | { | |
4505 | int pos; | |
1eae4eb2 AK |
4506 | u16 val; |
4507 | ||
4508 | /* | |
4509 | * 82573 workaround - disable L1 ASPM on mobile chipsets | |
4510 | * | |
4511 | * L1 ASPM on various mobile (ich7) chipsets do not behave properly | |
4512 | * resulting in lost data or garbage information on the pci-e link | |
4513 | * level. This could result in (false) bad EEPROM checksum errors, | |
4514 | * long ping times (up to 2s) or even a system freeze/hang. | |
4515 | * | |
4516 | * Unfortunately this feature saves about 1W power consumption when | |
4517 | * active. | |
4518 | */ | |
4519 | pos = pci_find_capability(pdev, PCI_CAP_ID_EXP); | |
1eae4eb2 AK |
4520 | pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val); |
4521 | if (val & 0x2) { | |
4522 | dev_warn(&pdev->dev, "Disabling L1 ASPM\n"); | |
4523 | val &= ~0x2; | |
4524 | pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val); | |
4525 | } | |
4526 | } | |
4527 | ||
bc7f75fa AK |
4528 | #ifdef CONFIG_PM |
4529 | static int e1000_resume(struct pci_dev *pdev) | |
4530 | { | |
4531 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4532 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4533 | struct e1000_hw *hw = &adapter->hw; | |
4534 | u32 err; | |
4535 | ||
4536 | pci_set_power_state(pdev, PCI_D0); | |
4537 | pci_restore_state(pdev); | |
1eae4eb2 | 4538 | e1000e_disable_l1aspm(pdev); |
6e4f6f6b | 4539 | |
f0f422e5 | 4540 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
4541 | if (err) { |
4542 | dev_err(&pdev->dev, | |
4543 | "Cannot enable PCI device from suspend\n"); | |
4544 | return err; | |
4545 | } | |
4546 | ||
4547 | pci_set_master(pdev); | |
4548 | ||
4549 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4550 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
4551 | ||
4662e82b | 4552 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa AK |
4553 | if (netif_running(netdev)) { |
4554 | err = e1000_request_irq(adapter); | |
4555 | if (err) | |
4556 | return err; | |
4557 | } | |
4558 | ||
4559 | e1000e_power_up_phy(adapter); | |
4560 | e1000e_reset(adapter); | |
4561 | ew32(WUS, ~0); | |
4562 | ||
4563 | e1000_init_manageability(adapter); | |
4564 | ||
4565 | if (netif_running(netdev)) | |
4566 | e1000e_up(adapter); | |
4567 | ||
4568 | netif_device_attach(netdev); | |
4569 | ||
ad68076e BA |
4570 | /* |
4571 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 4572 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
4573 | * under the control of the driver. |
4574 | */ | |
c43bc57e | 4575 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
4576 | e1000_get_hw_control(adapter); |
4577 | ||
4578 | return 0; | |
4579 | } | |
4580 | #endif | |
4581 | ||
4582 | static void e1000_shutdown(struct pci_dev *pdev) | |
4583 | { | |
4584 | e1000_suspend(pdev, PMSG_SUSPEND); | |
4585 | } | |
4586 | ||
4587 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4588 | /* | |
4589 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4590 | * without having to re-enable interrupts. It's not called while | |
4591 | * the interrupt routine is executing. | |
4592 | */ | |
4593 | static void e1000_netpoll(struct net_device *netdev) | |
4594 | { | |
4595 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4596 | ||
4597 | disable_irq(adapter->pdev->irq); | |
4598 | e1000_intr(adapter->pdev->irq, netdev); | |
4599 | ||
bc7f75fa AK |
4600 | enable_irq(adapter->pdev->irq); |
4601 | } | |
4602 | #endif | |
4603 | ||
4604 | /** | |
4605 | * e1000_io_error_detected - called when PCI error is detected | |
4606 | * @pdev: Pointer to PCI device | |
4607 | * @state: The current pci connection state | |
4608 | * | |
4609 | * This function is called after a PCI bus error affecting | |
4610 | * this device has been detected. | |
4611 | */ | |
4612 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
4613 | pci_channel_state_t state) | |
4614 | { | |
4615 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4616 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4617 | ||
4618 | netif_device_detach(netdev); | |
4619 | ||
4620 | if (netif_running(netdev)) | |
4621 | e1000e_down(adapter); | |
4622 | pci_disable_device(pdev); | |
4623 | ||
4624 | /* Request a slot slot reset. */ | |
4625 | return PCI_ERS_RESULT_NEED_RESET; | |
4626 | } | |
4627 | ||
4628 | /** | |
4629 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4630 | * @pdev: Pointer to PCI device | |
4631 | * | |
4632 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4633 | * resembles the first-half of the e1000_resume routine. | |
4634 | */ | |
4635 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4636 | { | |
4637 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4638 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4639 | struct e1000_hw *hw = &adapter->hw; | |
6e4f6f6b | 4640 | int err; |
bc7f75fa | 4641 | |
1eae4eb2 | 4642 | e1000e_disable_l1aspm(pdev); |
f0f422e5 | 4643 | err = pci_enable_device_mem(pdev); |
6e4f6f6b | 4644 | if (err) { |
bc7f75fa AK |
4645 | dev_err(&pdev->dev, |
4646 | "Cannot re-enable PCI device after reset.\n"); | |
4647 | return PCI_ERS_RESULT_DISCONNECT; | |
4648 | } | |
4649 | pci_set_master(pdev); | |
aad32739 | 4650 | pci_restore_state(pdev); |
bc7f75fa AK |
4651 | |
4652 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4653 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
4654 | ||
4655 | e1000e_reset(adapter); | |
4656 | ew32(WUS, ~0); | |
4657 | ||
4658 | return PCI_ERS_RESULT_RECOVERED; | |
4659 | } | |
4660 | ||
4661 | /** | |
4662 | * e1000_io_resume - called when traffic can start flowing again. | |
4663 | * @pdev: Pointer to PCI device | |
4664 | * | |
4665 | * This callback is called when the error recovery driver tells us that | |
4666 | * its OK to resume normal operation. Implementation resembles the | |
4667 | * second-half of the e1000_resume routine. | |
4668 | */ | |
4669 | static void e1000_io_resume(struct pci_dev *pdev) | |
4670 | { | |
4671 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4672 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4673 | ||
4674 | e1000_init_manageability(adapter); | |
4675 | ||
4676 | if (netif_running(netdev)) { | |
4677 | if (e1000e_up(adapter)) { | |
4678 | dev_err(&pdev->dev, | |
4679 | "can't bring device back up after reset\n"); | |
4680 | return; | |
4681 | } | |
4682 | } | |
4683 | ||
4684 | netif_device_attach(netdev); | |
4685 | ||
ad68076e BA |
4686 | /* |
4687 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 4688 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
4689 | * under the control of the driver. |
4690 | */ | |
c43bc57e | 4691 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
4692 | e1000_get_hw_control(adapter); |
4693 | ||
4694 | } | |
4695 | ||
4696 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
4697 | { | |
4698 | struct e1000_hw *hw = &adapter->hw; | |
4699 | struct net_device *netdev = adapter->netdev; | |
69e3fd8c | 4700 | u32 pba_num; |
bc7f75fa AK |
4701 | |
4702 | /* print bus type/speed/width info */ | |
7c510e4b | 4703 | e_info("(PCI Express:2.5GB/s:%s) %pM\n", |
44defeb3 JK |
4704 | /* bus width */ |
4705 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
4706 | "Width x1"), | |
4707 | /* MAC address */ | |
7c510e4b | 4708 | netdev->dev_addr); |
44defeb3 JK |
4709 | e_info("Intel(R) PRO/%s Network Connection\n", |
4710 | (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); | |
69e3fd8c | 4711 | e1000e_read_pba_num(hw, &pba_num); |
44defeb3 JK |
4712 | e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
4713 | hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff)); | |
bc7f75fa AK |
4714 | } |
4715 | ||
10aa4c04 AK |
4716 | static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
4717 | { | |
4718 | struct e1000_hw *hw = &adapter->hw; | |
4719 | int ret_val; | |
4720 | u16 buf = 0; | |
4721 | ||
4722 | if (hw->mac.type != e1000_82573) | |
4723 | return; | |
4724 | ||
4725 | ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); | |
4726 | if (!(le16_to_cpu(buf) & (1 << 0))) { | |
4727 | /* Deep Smart Power Down (DSPD) */ | |
6c2a9efa FP |
4728 | dev_warn(&adapter->pdev->dev, |
4729 | "Warning: detected DSPD enabled in EEPROM\n"); | |
10aa4c04 AK |
4730 | } |
4731 | ||
4732 | ret_val = e1000_read_nvm(hw, NVM_INIT_3GIO_3, 1, &buf); | |
4733 | if (le16_to_cpu(buf) & (3 << 2)) { | |
4734 | /* ASPM enable */ | |
6c2a9efa FP |
4735 | dev_warn(&adapter->pdev->dev, |
4736 | "Warning: detected ASPM enabled in EEPROM\n"); | |
10aa4c04 AK |
4737 | } |
4738 | } | |
4739 | ||
651c2466 SH |
4740 | static const struct net_device_ops e1000e_netdev_ops = { |
4741 | .ndo_open = e1000_open, | |
4742 | .ndo_stop = e1000_close, | |
00829823 | 4743 | .ndo_start_xmit = e1000_xmit_frame, |
651c2466 SH |
4744 | .ndo_get_stats = e1000_get_stats, |
4745 | .ndo_set_multicast_list = e1000_set_multi, | |
4746 | .ndo_set_mac_address = e1000_set_mac, | |
4747 | .ndo_change_mtu = e1000_change_mtu, | |
4748 | .ndo_do_ioctl = e1000_ioctl, | |
4749 | .ndo_tx_timeout = e1000_tx_timeout, | |
4750 | .ndo_validate_addr = eth_validate_addr, | |
4751 | ||
4752 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
4753 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
4754 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
4755 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4756 | .ndo_poll_controller = e1000_netpoll, | |
4757 | #endif | |
4758 | }; | |
4759 | ||
bc7f75fa AK |
4760 | /** |
4761 | * e1000_probe - Device Initialization Routine | |
4762 | * @pdev: PCI device information struct | |
4763 | * @ent: entry in e1000_pci_tbl | |
4764 | * | |
4765 | * Returns 0 on success, negative on failure | |
4766 | * | |
4767 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
4768 | * The OS initialization, configuring of the adapter private structure, | |
4769 | * and a hardware reset occur. | |
4770 | **/ | |
4771 | static int __devinit e1000_probe(struct pci_dev *pdev, | |
4772 | const struct pci_device_id *ent) | |
4773 | { | |
4774 | struct net_device *netdev; | |
4775 | struct e1000_adapter *adapter; | |
4776 | struct e1000_hw *hw; | |
4777 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
f47e81fc BB |
4778 | resource_size_t mmio_start, mmio_len; |
4779 | resource_size_t flash_start, flash_len; | |
bc7f75fa AK |
4780 | |
4781 | static int cards_found; | |
4782 | int i, err, pci_using_dac; | |
4783 | u16 eeprom_data = 0; | |
4784 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
4785 | ||
1eae4eb2 | 4786 | e1000e_disable_l1aspm(pdev); |
6e4f6f6b | 4787 | |
f0f422e5 | 4788 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
4789 | if (err) |
4790 | return err; | |
4791 | ||
4792 | pci_using_dac = 0; | |
4793 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
4794 | if (!err) { | |
4795 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
4796 | if (!err) | |
4797 | pci_using_dac = 1; | |
4798 | } else { | |
4799 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
4800 | if (err) { | |
4801 | err = pci_set_consistent_dma_mask(pdev, | |
4802 | DMA_32BIT_MASK); | |
4803 | if (err) { | |
4804 | dev_err(&pdev->dev, "No usable DMA " | |
4805 | "configuration, aborting\n"); | |
4806 | goto err_dma; | |
4807 | } | |
4808 | } | |
4809 | } | |
4810 | ||
f0f422e5 BA |
4811 | err = pci_request_selected_regions(pdev, |
4812 | pci_select_bars(pdev, IORESOURCE_MEM), | |
4813 | e1000e_driver_name); | |
bc7f75fa AK |
4814 | if (err) |
4815 | goto err_pci_reg; | |
4816 | ||
4817 | pci_set_master(pdev); | |
438b365a BA |
4818 | /* PCI config space info */ |
4819 | err = pci_save_state(pdev); | |
4820 | if (err) | |
4821 | goto err_alloc_etherdev; | |
bc7f75fa AK |
4822 | |
4823 | err = -ENOMEM; | |
4824 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
4825 | if (!netdev) | |
4826 | goto err_alloc_etherdev; | |
4827 | ||
bc7f75fa AK |
4828 | SET_NETDEV_DEV(netdev, &pdev->dev); |
4829 | ||
4830 | pci_set_drvdata(pdev, netdev); | |
4831 | adapter = netdev_priv(netdev); | |
4832 | hw = &adapter->hw; | |
4833 | adapter->netdev = netdev; | |
4834 | adapter->pdev = pdev; | |
4835 | adapter->ei = ei; | |
4836 | adapter->pba = ei->pba; | |
4837 | adapter->flags = ei->flags; | |
eb7c3adb | 4838 | adapter->flags2 = ei->flags2; |
bc7f75fa AK |
4839 | adapter->hw.adapter = adapter; |
4840 | adapter->hw.mac.type = ei->mac; | |
4841 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; | |
4842 | ||
4843 | mmio_start = pci_resource_start(pdev, 0); | |
4844 | mmio_len = pci_resource_len(pdev, 0); | |
4845 | ||
4846 | err = -EIO; | |
4847 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
4848 | if (!adapter->hw.hw_addr) | |
4849 | goto err_ioremap; | |
4850 | ||
4851 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
4852 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
4853 | flash_start = pci_resource_start(pdev, 1); | |
4854 | flash_len = pci_resource_len(pdev, 1); | |
4855 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
4856 | if (!adapter->hw.flash_address) | |
4857 | goto err_flashmap; | |
4858 | } | |
4859 | ||
4860 | /* construct the net_device struct */ | |
651c2466 | 4861 | netdev->netdev_ops = &e1000e_netdev_ops; |
bc7f75fa | 4862 | e1000e_set_ethtool_ops(netdev); |
bc7f75fa AK |
4863 | netdev->watchdog_timeo = 5 * HZ; |
4864 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); | |
bc7f75fa AK |
4865 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
4866 | ||
4867 | netdev->mem_start = mmio_start; | |
4868 | netdev->mem_end = mmio_start + mmio_len; | |
4869 | ||
4870 | adapter->bd_number = cards_found++; | |
4871 | ||
4662e82b BA |
4872 | e1000e_check_options(adapter); |
4873 | ||
bc7f75fa AK |
4874 | /* setup adapter struct */ |
4875 | err = e1000_sw_init(adapter); | |
4876 | if (err) | |
4877 | goto err_sw_init; | |
4878 | ||
4879 | err = -EIO; | |
4880 | ||
4881 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
4882 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
4883 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
4884 | ||
69e3fd8c | 4885 | err = ei->get_variants(adapter); |
bc7f75fa AK |
4886 | if (err) |
4887 | goto err_hw_init; | |
4888 | ||
4a770358 BA |
4889 | if ((adapter->flags & FLAG_IS_ICH) && |
4890 | (adapter->flags & FLAG_READ_ONLY_NVM)) | |
4891 | e1000e_write_protect_nvm_ich8lan(&adapter->hw); | |
4892 | ||
bc7f75fa AK |
4893 | hw->mac.ops.get_bus_info(&adapter->hw); |
4894 | ||
318a94d6 | 4895 | adapter->hw.phy.autoneg_wait_to_complete = 0; |
bc7f75fa AK |
4896 | |
4897 | /* Copper options */ | |
318a94d6 | 4898 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
bc7f75fa AK |
4899 | adapter->hw.phy.mdix = AUTO_ALL_MODES; |
4900 | adapter->hw.phy.disable_polarity_correction = 0; | |
4901 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
4902 | } | |
4903 | ||
4904 | if (e1000_check_reset_block(&adapter->hw)) | |
44defeb3 | 4905 | e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
bc7f75fa AK |
4906 | |
4907 | netdev->features = NETIF_F_SG | | |
4908 | NETIF_F_HW_CSUM | | |
4909 | NETIF_F_HW_VLAN_TX | | |
4910 | NETIF_F_HW_VLAN_RX; | |
4911 | ||
4912 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
4913 | netdev->features |= NETIF_F_HW_VLAN_FILTER; | |
4914 | ||
4915 | netdev->features |= NETIF_F_TSO; | |
4916 | netdev->features |= NETIF_F_TSO6; | |
4917 | ||
a5136e23 JK |
4918 | netdev->vlan_features |= NETIF_F_TSO; |
4919 | netdev->vlan_features |= NETIF_F_TSO6; | |
4920 | netdev->vlan_features |= NETIF_F_HW_CSUM; | |
4921 | netdev->vlan_features |= NETIF_F_SG; | |
4922 | ||
bc7f75fa AK |
4923 | if (pci_using_dac) |
4924 | netdev->features |= NETIF_F_HIGHDMA; | |
4925 | ||
ad68076e BA |
4926 | /* |
4927 | * We should not be using LLTX anymore, but we are still Tx faster with | |
4928 | * it. | |
4929 | */ | |
bc7f75fa AK |
4930 | netdev->features |= NETIF_F_LLTX; |
4931 | ||
4932 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) | |
4933 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
4934 | ||
ad68076e BA |
4935 | /* |
4936 | * before reading the NVM, reset the controller to | |
4937 | * put the device in a known good starting state | |
4938 | */ | |
bc7f75fa AK |
4939 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
4940 | ||
4941 | /* | |
4942 | * systems with ASPM and others may see the checksum fail on the first | |
4943 | * attempt. Let's give it a few tries | |
4944 | */ | |
4945 | for (i = 0;; i++) { | |
4946 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
4947 | break; | |
4948 | if (i == 2) { | |
44defeb3 | 4949 | e_err("The NVM Checksum Is Not Valid\n"); |
bc7f75fa AK |
4950 | err = -EIO; |
4951 | goto err_eeprom; | |
4952 | } | |
4953 | } | |
4954 | ||
10aa4c04 AK |
4955 | e1000_eeprom_checks(adapter); |
4956 | ||
bc7f75fa AK |
4957 | /* copy the MAC address out of the NVM */ |
4958 | if (e1000e_read_mac_addr(&adapter->hw)) | |
44defeb3 | 4959 | e_err("NVM Read Error while reading MAC address\n"); |
bc7f75fa AK |
4960 | |
4961 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
4962 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
4963 | ||
4964 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
7c510e4b | 4965 | e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
bc7f75fa AK |
4966 | err = -EIO; |
4967 | goto err_eeprom; | |
4968 | } | |
4969 | ||
4970 | init_timer(&adapter->watchdog_timer); | |
4971 | adapter->watchdog_timer.function = &e1000_watchdog; | |
4972 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
4973 | ||
4974 | init_timer(&adapter->phy_info_timer); | |
4975 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
4976 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
4977 | ||
4978 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
4979 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
a8f88ff5 JB |
4980 | INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
4981 | INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); | |
bc7f75fa | 4982 | |
bc7f75fa AK |
4983 | /* Initialize link parameters. User can change them with ethtool */ |
4984 | adapter->hw.mac.autoneg = 1; | |
309af40b | 4985 | adapter->fc_autoneg = 1; |
5c48ef3e BA |
4986 | adapter->hw.fc.requested_mode = e1000_fc_default; |
4987 | adapter->hw.fc.current_mode = e1000_fc_default; | |
bc7f75fa AK |
4988 | adapter->hw.phy.autoneg_advertised = 0x2f; |
4989 | ||
4990 | /* ring size defaults */ | |
4991 | adapter->rx_ring->count = 256; | |
4992 | adapter->tx_ring->count = 256; | |
4993 | ||
4994 | /* | |
4995 | * Initial Wake on LAN setting - If APM wake is enabled in | |
4996 | * the EEPROM, enable the ACPI Magic Packet filter | |
4997 | */ | |
4998 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
4999 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
5000 | eeprom_data = er32(WUC); | |
5001 | eeprom_apme_mask = E1000_WUC_APME; | |
5002 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { | |
5003 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
5004 | (adapter->hw.bus.func == 1)) | |
5005 | e1000_read_nvm(&adapter->hw, | |
5006 | NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
5007 | else | |
5008 | e1000_read_nvm(&adapter->hw, | |
5009 | NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
5010 | } | |
5011 | ||
5012 | /* fetch WoL from EEPROM */ | |
5013 | if (eeprom_data & eeprom_apme_mask) | |
5014 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
5015 | ||
5016 | /* | |
5017 | * now that we have the eeprom settings, apply the special cases | |
5018 | * where the eeprom may be wrong or the board simply won't support | |
5019 | * wake on lan on a particular port | |
5020 | */ | |
5021 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
5022 | adapter->eeprom_wol = 0; | |
5023 | ||
5024 | /* initialize the wol settings based on the eeprom settings */ | |
5025 | adapter->wol = adapter->eeprom_wol; | |
6ff68026 | 5026 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
bc7f75fa | 5027 | |
84527590 BA |
5028 | /* save off EEPROM version number */ |
5029 | e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); | |
5030 | ||
bc7f75fa AK |
5031 | /* reset the hardware with the new settings */ |
5032 | e1000e_reset(adapter); | |
5033 | ||
ad68076e BA |
5034 | /* |
5035 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5036 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5037 | * under the control of the driver. |
5038 | */ | |
c43bc57e | 5039 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5040 | e1000_get_hw_control(adapter); |
5041 | ||
5042 | /* tell the stack to leave us alone until e1000_open() is called */ | |
5043 | netif_carrier_off(netdev); | |
d55b53ff | 5044 | netif_tx_stop_all_queues(netdev); |
bc7f75fa AK |
5045 | |
5046 | strcpy(netdev->name, "eth%d"); | |
5047 | err = register_netdev(netdev); | |
5048 | if (err) | |
5049 | goto err_register; | |
5050 | ||
5051 | e1000_print_device_info(adapter); | |
5052 | ||
5053 | return 0; | |
5054 | ||
5055 | err_register: | |
c43bc57e JB |
5056 | if (!(adapter->flags & FLAG_HAS_AMT)) |
5057 | e1000_release_hw_control(adapter); | |
bc7f75fa AK |
5058 | err_eeprom: |
5059 | if (!e1000_check_reset_block(&adapter->hw)) | |
5060 | e1000_phy_hw_reset(&adapter->hw); | |
c43bc57e | 5061 | err_hw_init: |
bc7f75fa | 5062 | |
bc7f75fa AK |
5063 | kfree(adapter->tx_ring); |
5064 | kfree(adapter->rx_ring); | |
5065 | err_sw_init: | |
c43bc57e JB |
5066 | if (adapter->hw.flash_address) |
5067 | iounmap(adapter->hw.flash_address); | |
e82f54ba | 5068 | e1000e_reset_interrupt_capability(adapter); |
c43bc57e | 5069 | err_flashmap: |
bc7f75fa AK |
5070 | iounmap(adapter->hw.hw_addr); |
5071 | err_ioremap: | |
5072 | free_netdev(netdev); | |
5073 | err_alloc_etherdev: | |
f0f422e5 BA |
5074 | pci_release_selected_regions(pdev, |
5075 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5076 | err_pci_reg: |
5077 | err_dma: | |
5078 | pci_disable_device(pdev); | |
5079 | return err; | |
5080 | } | |
5081 | ||
5082 | /** | |
5083 | * e1000_remove - Device Removal Routine | |
5084 | * @pdev: PCI device information struct | |
5085 | * | |
5086 | * e1000_remove is called by the PCI subsystem to alert the driver | |
5087 | * that it should release a PCI device. The could be caused by a | |
5088 | * Hot-Plug event, or because the driver is going to be removed from | |
5089 | * memory. | |
5090 | **/ | |
5091 | static void __devexit e1000_remove(struct pci_dev *pdev) | |
5092 | { | |
5093 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5094 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5095 | ||
ad68076e BA |
5096 | /* |
5097 | * flush_scheduled work may reschedule our watchdog task, so | |
5098 | * explicitly disable watchdog tasks from being rescheduled | |
5099 | */ | |
bc7f75fa AK |
5100 | set_bit(__E1000_DOWN, &adapter->state); |
5101 | del_timer_sync(&adapter->watchdog_timer); | |
5102 | del_timer_sync(&adapter->phy_info_timer); | |
5103 | ||
5104 | flush_scheduled_work(); | |
5105 | ||
ad68076e BA |
5106 | /* |
5107 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
5108 | * would have already happened in close and is redundant. | |
5109 | */ | |
bc7f75fa AK |
5110 | e1000_release_hw_control(adapter); |
5111 | ||
5112 | unregister_netdev(netdev); | |
5113 | ||
5114 | if (!e1000_check_reset_block(&adapter->hw)) | |
5115 | e1000_phy_hw_reset(&adapter->hw); | |
5116 | ||
4662e82b | 5117 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
5118 | kfree(adapter->tx_ring); |
5119 | kfree(adapter->rx_ring); | |
5120 | ||
5121 | iounmap(adapter->hw.hw_addr); | |
5122 | if (adapter->hw.flash_address) | |
5123 | iounmap(adapter->hw.flash_address); | |
f0f422e5 BA |
5124 | pci_release_selected_regions(pdev, |
5125 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5126 | |
5127 | free_netdev(netdev); | |
5128 | ||
5129 | pci_disable_device(pdev); | |
5130 | } | |
5131 | ||
5132 | /* PCI Error Recovery (ERS) */ | |
5133 | static struct pci_error_handlers e1000_err_handler = { | |
5134 | .error_detected = e1000_io_error_detected, | |
5135 | .slot_reset = e1000_io_slot_reset, | |
5136 | .resume = e1000_io_resume, | |
5137 | }; | |
5138 | ||
5139 | static struct pci_device_id e1000_pci_tbl[] = { | |
bc7f75fa AK |
5140 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
5141 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
5142 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
5143 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, | |
5144 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, | |
5145 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
040babf9 AK |
5146 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
5147 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, | |
5148 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, | |
ad68076e | 5149 | |
bc7f75fa AK |
5150 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
5151 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
5152 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
5153 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
ad68076e | 5154 | |
bc7f75fa AK |
5155 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
5156 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
5157 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
ad68076e | 5158 | |
4662e82b BA |
5159 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
5160 | ||
bc7f75fa AK |
5161 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
5162 | board_80003es2lan }, | |
5163 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
5164 | board_80003es2lan }, | |
5165 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
5166 | board_80003es2lan }, | |
5167 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
5168 | board_80003es2lan }, | |
ad68076e | 5169 | |
bc7f75fa AK |
5170 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
5171 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
5172 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
5173 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
5174 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
5175 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
5176 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
ad68076e | 5177 | |
bc7f75fa AK |
5178 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
5179 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
5180 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
5181 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
5182 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
2f15f9d6 | 5183 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
97ac8cae BA |
5184 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
5185 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, | |
5186 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, | |
5187 | ||
5188 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, | |
5189 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, | |
5190 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, | |
bc7f75fa | 5191 | |
f4187b56 BA |
5192 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
5193 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, | |
5194 | ||
bc7f75fa AK |
5195 | { } /* terminate list */ |
5196 | }; | |
5197 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
5198 | ||
5199 | /* PCI Device API Driver */ | |
5200 | static struct pci_driver e1000_driver = { | |
5201 | .name = e1000e_driver_name, | |
5202 | .id_table = e1000_pci_tbl, | |
5203 | .probe = e1000_probe, | |
5204 | .remove = __devexit_p(e1000_remove), | |
5205 | #ifdef CONFIG_PM | |
ad68076e | 5206 | /* Power Management Hooks */ |
bc7f75fa AK |
5207 | .suspend = e1000_suspend, |
5208 | .resume = e1000_resume, | |
5209 | #endif | |
5210 | .shutdown = e1000_shutdown, | |
5211 | .err_handler = &e1000_err_handler | |
5212 | }; | |
5213 | ||
5214 | /** | |
5215 | * e1000_init_module - Driver Registration Routine | |
5216 | * | |
5217 | * e1000_init_module is the first routine called when the driver is | |
5218 | * loaded. All it does is register with the PCI subsystem. | |
5219 | **/ | |
5220 | static int __init e1000_init_module(void) | |
5221 | { | |
5222 | int ret; | |
5223 | printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n", | |
5224 | e1000e_driver_name, e1000e_driver_version); | |
ad68076e | 5225 | printk(KERN_INFO "%s: Copyright (c) 1999-2008 Intel Corporation.\n", |
bc7f75fa AK |
5226 | e1000e_driver_name); |
5227 | ret = pci_register_driver(&e1000_driver); | |
97ac8cae BA |
5228 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, e1000e_driver_name, |
5229 | PM_QOS_DEFAULT_VALUE); | |
5230 | ||
bc7f75fa AK |
5231 | return ret; |
5232 | } | |
5233 | module_init(e1000_init_module); | |
5234 | ||
5235 | /** | |
5236 | * e1000_exit_module - Driver Exit Cleanup Routine | |
5237 | * | |
5238 | * e1000_exit_module is called just before the driver is removed | |
5239 | * from memory. | |
5240 | **/ | |
5241 | static void __exit e1000_exit_module(void) | |
5242 | { | |
5243 | pci_unregister_driver(&e1000_driver); | |
97ac8cae | 5244 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, e1000e_driver_name); |
bc7f75fa AK |
5245 | } |
5246 | module_exit(e1000_exit_module); | |
5247 | ||
5248 | ||
5249 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
5250 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
5251 | MODULE_LICENSE("GPL"); | |
5252 | MODULE_VERSION(DRV_VERSION); | |
5253 | ||
5254 | /* e1000_main.c */ |