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bc7f75fa AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel PRO/1000 Linux driver | |
c7e54b1b | 4 | Copyright(c) 1999 - 2009 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> |
23606cf5 | 47 | #include <linux/pm_runtime.h> |
111b9dc5 | 48 | #include <linux/aer.h> |
bc7f75fa AK |
49 | |
50 | #include "e1000.h" | |
51 | ||
3be8c940 | 52 | #define DRV_VERSION "1.0.2-k2" |
bc7f75fa AK |
53 | char e1000e_driver_name[] = "e1000e"; |
54 | const char e1000e_driver_version[] = DRV_VERSION; | |
55 | ||
56 | static const struct e1000_info *e1000_info_tbl[] = { | |
57 | [board_82571] = &e1000_82571_info, | |
58 | [board_82572] = &e1000_82572_info, | |
59 | [board_82573] = &e1000_82573_info, | |
4662e82b | 60 | [board_82574] = &e1000_82574_info, |
8c81c9c3 | 61 | [board_82583] = &e1000_82583_info, |
bc7f75fa AK |
62 | [board_80003es2lan] = &e1000_es2_info, |
63 | [board_ich8lan] = &e1000_ich8_info, | |
64 | [board_ich9lan] = &e1000_ich9_info, | |
f4187b56 | 65 | [board_ich10lan] = &e1000_ich10_info, |
a4f58f54 | 66 | [board_pchlan] = &e1000_pch_info, |
bc7f75fa AK |
67 | }; |
68 | ||
bc7f75fa AK |
69 | /** |
70 | * e1000_desc_unused - calculate if we have unused descriptors | |
71 | **/ | |
72 | static int e1000_desc_unused(struct e1000_ring *ring) | |
73 | { | |
74 | if (ring->next_to_clean > ring->next_to_use) | |
75 | return ring->next_to_clean - ring->next_to_use - 1; | |
76 | ||
77 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
78 | } | |
79 | ||
80 | /** | |
ad68076e | 81 | * e1000_receive_skb - helper function to handle Rx indications |
bc7f75fa AK |
82 | * @adapter: board private structure |
83 | * @status: descriptor status field as written by hardware | |
84 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
85 | * @skb: pointer to sk_buff to be indicated to stack | |
86 | **/ | |
87 | static void e1000_receive_skb(struct e1000_adapter *adapter, | |
88 | struct net_device *netdev, | |
89 | struct sk_buff *skb, | |
a39fe742 | 90 | u8 status, __le16 vlan) |
bc7f75fa AK |
91 | { |
92 | skb->protocol = eth_type_trans(skb, netdev); | |
93 | ||
94 | if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) | |
c405b828 HX |
95 | vlan_gro_receive(&adapter->napi, adapter->vlgrp, |
96 | le16_to_cpu(vlan), skb); | |
bc7f75fa | 97 | else |
89c88b16 | 98 | napi_gro_receive(&adapter->napi, skb); |
bc7f75fa AK |
99 | } |
100 | ||
101 | /** | |
102 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
103 | * @adapter: board private structure | |
104 | * @status_err: receive descriptor status and error fields | |
105 | * @csum: receive descriptor csum field | |
106 | * @sk_buff: socket buffer with received data | |
107 | **/ | |
108 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, | |
109 | u32 csum, struct sk_buff *skb) | |
110 | { | |
111 | u16 status = (u16)status_err; | |
112 | u8 errors = (u8)(status_err >> 24); | |
113 | skb->ip_summed = CHECKSUM_NONE; | |
114 | ||
115 | /* Ignore Checksum bit is set */ | |
116 | if (status & E1000_RXD_STAT_IXSM) | |
117 | return; | |
118 | /* TCP/UDP checksum error bit is set */ | |
119 | if (errors & E1000_RXD_ERR_TCPE) { | |
120 | /* let the stack verify checksum errors */ | |
121 | adapter->hw_csum_err++; | |
122 | return; | |
123 | } | |
124 | ||
125 | /* TCP/UDP Checksum has not been calculated */ | |
126 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
127 | return; | |
128 | ||
129 | /* It must be a TCP or UDP packet with a valid checksum */ | |
130 | if (status & E1000_RXD_STAT_TCPCS) { | |
131 | /* TCP checksum is good */ | |
132 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
133 | } else { | |
ad68076e BA |
134 | /* |
135 | * IP fragment with UDP payload | |
136 | * Hardware complements the payload checksum, so we undo it | |
bc7f75fa AK |
137 | * and then put the value in host order for further stack use. |
138 | */ | |
a39fe742 AV |
139 | __sum16 sum = (__force __sum16)htons(csum); |
140 | skb->csum = csum_unfold(~sum); | |
bc7f75fa AK |
141 | skb->ip_summed = CHECKSUM_COMPLETE; |
142 | } | |
143 | adapter->hw_csum_good++; | |
144 | } | |
145 | ||
146 | /** | |
147 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
148 | * @adapter: address of board private structure | |
149 | **/ | |
150 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, | |
151 | int cleaned_count) | |
152 | { | |
153 | struct net_device *netdev = adapter->netdev; | |
154 | struct pci_dev *pdev = adapter->pdev; | |
155 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
156 | struct e1000_rx_desc *rx_desc; | |
157 | struct e1000_buffer *buffer_info; | |
158 | struct sk_buff *skb; | |
159 | unsigned int i; | |
89d71a66 | 160 | unsigned int bufsz = adapter->rx_buffer_len; |
bc7f75fa AK |
161 | |
162 | i = rx_ring->next_to_use; | |
163 | buffer_info = &rx_ring->buffer_info[i]; | |
164 | ||
165 | while (cleaned_count--) { | |
166 | skb = buffer_info->skb; | |
167 | if (skb) { | |
168 | skb_trim(skb, 0); | |
169 | goto map_skb; | |
170 | } | |
171 | ||
89d71a66 | 172 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
bc7f75fa AK |
173 | if (!skb) { |
174 | /* Better luck next round */ | |
175 | adapter->alloc_rx_buff_failed++; | |
176 | break; | |
177 | } | |
178 | ||
bc7f75fa AK |
179 | buffer_info->skb = skb; |
180 | map_skb: | |
181 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
182 | adapter->rx_buffer_len, | |
183 | PCI_DMA_FROMDEVICE); | |
8d8bb39b | 184 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) { |
bc7f75fa AK |
185 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
186 | adapter->rx_dma_failed++; | |
187 | break; | |
188 | } | |
189 | ||
190 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
191 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
192 | ||
193 | i++; | |
194 | if (i == rx_ring->count) | |
195 | i = 0; | |
196 | buffer_info = &rx_ring->buffer_info[i]; | |
197 | } | |
198 | ||
199 | if (rx_ring->next_to_use != i) { | |
200 | rx_ring->next_to_use = i; | |
201 | if (i-- == 0) | |
202 | i = (rx_ring->count - 1); | |
203 | ||
ad68076e BA |
204 | /* |
205 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
206 | * know there are new descriptors to fetch. (Only |
207 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
208 | * such as IA-64). |
209 | */ | |
bc7f75fa AK |
210 | wmb(); |
211 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
212 | } | |
213 | } | |
214 | ||
215 | /** | |
216 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
217 | * @adapter: address of board private structure | |
218 | **/ | |
219 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, | |
220 | int cleaned_count) | |
221 | { | |
222 | struct net_device *netdev = adapter->netdev; | |
223 | struct pci_dev *pdev = adapter->pdev; | |
224 | union e1000_rx_desc_packet_split *rx_desc; | |
225 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
226 | struct e1000_buffer *buffer_info; | |
227 | struct e1000_ps_page *ps_page; | |
228 | struct sk_buff *skb; | |
229 | unsigned int i, j; | |
230 | ||
231 | i = rx_ring->next_to_use; | |
232 | buffer_info = &rx_ring->buffer_info[i]; | |
233 | ||
234 | while (cleaned_count--) { | |
235 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
236 | ||
237 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 AK |
238 | ps_page = &buffer_info->ps_pages[j]; |
239 | if (j >= adapter->rx_ps_pages) { | |
240 | /* all unused desc entries get hw null ptr */ | |
a39fe742 | 241 | rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
47f44e40 AK |
242 | continue; |
243 | } | |
244 | if (!ps_page->page) { | |
245 | ps_page->page = alloc_page(GFP_ATOMIC); | |
bc7f75fa | 246 | if (!ps_page->page) { |
47f44e40 AK |
247 | adapter->alloc_rx_buff_failed++; |
248 | goto no_buffers; | |
249 | } | |
250 | ps_page->dma = pci_map_page(pdev, | |
251 | ps_page->page, | |
252 | 0, PAGE_SIZE, | |
253 | PCI_DMA_FROMDEVICE); | |
8d8bb39b | 254 | if (pci_dma_mapping_error(pdev, ps_page->dma)) { |
47f44e40 AK |
255 | dev_err(&adapter->pdev->dev, |
256 | "RX DMA page map failed\n"); | |
257 | adapter->rx_dma_failed++; | |
258 | goto no_buffers; | |
bc7f75fa | 259 | } |
bc7f75fa | 260 | } |
47f44e40 AK |
261 | /* |
262 | * Refresh the desc even if buffer_addrs | |
263 | * didn't change because each write-back | |
264 | * erases this info. | |
265 | */ | |
266 | rx_desc->read.buffer_addr[j+1] = | |
267 | cpu_to_le64(ps_page->dma); | |
bc7f75fa AK |
268 | } |
269 | ||
89d71a66 ED |
270 | skb = netdev_alloc_skb_ip_align(netdev, |
271 | adapter->rx_ps_bsize0); | |
bc7f75fa AK |
272 | |
273 | if (!skb) { | |
274 | adapter->alloc_rx_buff_failed++; | |
275 | break; | |
276 | } | |
277 | ||
bc7f75fa AK |
278 | buffer_info->skb = skb; |
279 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
280 | adapter->rx_ps_bsize0, | |
281 | PCI_DMA_FROMDEVICE); | |
8d8bb39b | 282 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) { |
bc7f75fa AK |
283 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
284 | adapter->rx_dma_failed++; | |
285 | /* cleanup skb */ | |
286 | dev_kfree_skb_any(skb); | |
287 | buffer_info->skb = NULL; | |
288 | break; | |
289 | } | |
290 | ||
291 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
292 | ||
293 | i++; | |
294 | if (i == rx_ring->count) | |
295 | i = 0; | |
296 | buffer_info = &rx_ring->buffer_info[i]; | |
297 | } | |
298 | ||
299 | no_buffers: | |
300 | if (rx_ring->next_to_use != i) { | |
301 | rx_ring->next_to_use = i; | |
302 | ||
303 | if (!(i--)) | |
304 | i = (rx_ring->count - 1); | |
305 | ||
ad68076e BA |
306 | /* |
307 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
308 | * know there are new descriptors to fetch. (Only |
309 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
310 | * such as IA-64). |
311 | */ | |
bc7f75fa | 312 | wmb(); |
ad68076e BA |
313 | /* |
314 | * Hardware increments by 16 bytes, but packet split | |
bc7f75fa AK |
315 | * descriptors are 32 bytes...so we increment tail |
316 | * twice as much. | |
317 | */ | |
318 | writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); | |
319 | } | |
320 | } | |
321 | ||
97ac8cae BA |
322 | /** |
323 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
324 | * @adapter: address of board private structure | |
97ac8cae BA |
325 | * @cleaned_count: number of buffers to allocate this pass |
326 | **/ | |
327 | ||
328 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
329 | int cleaned_count) | |
330 | { | |
331 | struct net_device *netdev = adapter->netdev; | |
332 | struct pci_dev *pdev = adapter->pdev; | |
333 | struct e1000_rx_desc *rx_desc; | |
334 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
335 | struct e1000_buffer *buffer_info; | |
336 | struct sk_buff *skb; | |
337 | unsigned int i; | |
89d71a66 | 338 | unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
97ac8cae BA |
339 | |
340 | i = rx_ring->next_to_use; | |
341 | buffer_info = &rx_ring->buffer_info[i]; | |
342 | ||
343 | while (cleaned_count--) { | |
344 | skb = buffer_info->skb; | |
345 | if (skb) { | |
346 | skb_trim(skb, 0); | |
347 | goto check_page; | |
348 | } | |
349 | ||
89d71a66 | 350 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
97ac8cae BA |
351 | if (unlikely(!skb)) { |
352 | /* Better luck next round */ | |
353 | adapter->alloc_rx_buff_failed++; | |
354 | break; | |
355 | } | |
356 | ||
97ac8cae BA |
357 | buffer_info->skb = skb; |
358 | check_page: | |
359 | /* allocate a new page if necessary */ | |
360 | if (!buffer_info->page) { | |
361 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
362 | if (unlikely(!buffer_info->page)) { | |
363 | adapter->alloc_rx_buff_failed++; | |
364 | break; | |
365 | } | |
366 | } | |
367 | ||
368 | if (!buffer_info->dma) | |
369 | buffer_info->dma = pci_map_page(pdev, | |
370 | buffer_info->page, 0, | |
371 | PAGE_SIZE, | |
372 | PCI_DMA_FROMDEVICE); | |
373 | ||
374 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
375 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
376 | ||
377 | if (unlikely(++i == rx_ring->count)) | |
378 | i = 0; | |
379 | buffer_info = &rx_ring->buffer_info[i]; | |
380 | } | |
381 | ||
382 | if (likely(rx_ring->next_to_use != i)) { | |
383 | rx_ring->next_to_use = i; | |
384 | if (unlikely(i-- == 0)) | |
385 | i = (rx_ring->count - 1); | |
386 | ||
387 | /* Force memory writes to complete before letting h/w | |
388 | * know there are new descriptors to fetch. (Only | |
389 | * applicable for weak-ordered memory model archs, | |
390 | * such as IA-64). */ | |
391 | wmb(); | |
392 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
393 | } | |
394 | } | |
395 | ||
bc7f75fa AK |
396 | /** |
397 | * e1000_clean_rx_irq - Send received data up the network stack; legacy | |
398 | * @adapter: board private structure | |
399 | * | |
400 | * the return value indicates whether actual cleaning was done, there | |
401 | * is no guarantee that everything was cleaned | |
402 | **/ | |
403 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, | |
404 | int *work_done, int work_to_do) | |
405 | { | |
406 | struct net_device *netdev = adapter->netdev; | |
407 | struct pci_dev *pdev = adapter->pdev; | |
3bb99fe2 | 408 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
409 | struct e1000_ring *rx_ring = adapter->rx_ring; |
410 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
411 | struct e1000_buffer *buffer_info, *next_buffer; | |
412 | u32 length; | |
413 | unsigned int i; | |
414 | int cleaned_count = 0; | |
415 | bool cleaned = 0; | |
416 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
417 | ||
418 | i = rx_ring->next_to_clean; | |
419 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
420 | buffer_info = &rx_ring->buffer_info[i]; | |
421 | ||
422 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
423 | struct sk_buff *skb; | |
424 | u8 status; | |
425 | ||
426 | if (*work_done >= work_to_do) | |
427 | break; | |
428 | (*work_done)++; | |
429 | ||
430 | status = rx_desc->status; | |
431 | skb = buffer_info->skb; | |
432 | buffer_info->skb = NULL; | |
433 | ||
434 | prefetch(skb->data - NET_IP_ALIGN); | |
435 | ||
436 | i++; | |
437 | if (i == rx_ring->count) | |
438 | i = 0; | |
439 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
440 | prefetch(next_rxd); | |
441 | ||
442 | next_buffer = &rx_ring->buffer_info[i]; | |
443 | ||
444 | cleaned = 1; | |
445 | cleaned_count++; | |
446 | pci_unmap_single(pdev, | |
447 | buffer_info->dma, | |
448 | adapter->rx_buffer_len, | |
449 | PCI_DMA_FROMDEVICE); | |
450 | buffer_info->dma = 0; | |
451 | ||
452 | length = le16_to_cpu(rx_desc->length); | |
453 | ||
b94b5028 JB |
454 | /* |
455 | * !EOP means multiple descriptors were used to store a single | |
456 | * packet, if that's the case we need to toss it. In fact, we | |
457 | * need to toss every packet with the EOP bit clear and the | |
458 | * next frame that _does_ have the EOP bit set, as it is by | |
459 | * definition only a frame fragment | |
460 | */ | |
461 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
462 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
463 | ||
464 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
bc7f75fa | 465 | /* All receives must fit into a single buffer */ |
3bb99fe2 | 466 | e_dbg("Receive packet consumed multiple buffers\n"); |
bc7f75fa AK |
467 | /* recycle */ |
468 | buffer_info->skb = skb; | |
b94b5028 JB |
469 | if (status & E1000_RXD_STAT_EOP) |
470 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
471 | goto next_desc; |
472 | } | |
473 | ||
474 | if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { | |
475 | /* recycle */ | |
476 | buffer_info->skb = skb; | |
477 | goto next_desc; | |
478 | } | |
479 | ||
eb7c3adb JK |
480 | /* adjust length to remove Ethernet CRC */ |
481 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
482 | length -= 4; | |
483 | ||
bc7f75fa AK |
484 | total_rx_bytes += length; |
485 | total_rx_packets++; | |
486 | ||
ad68076e BA |
487 | /* |
488 | * code added for copybreak, this should improve | |
bc7f75fa | 489 | * performance for small packets with large amounts |
ad68076e BA |
490 | * of reassembly being done in the stack |
491 | */ | |
bc7f75fa AK |
492 | if (length < copybreak) { |
493 | struct sk_buff *new_skb = | |
89d71a66 | 494 | netdev_alloc_skb_ip_align(netdev, length); |
bc7f75fa | 495 | if (new_skb) { |
808ff676 BA |
496 | skb_copy_to_linear_data_offset(new_skb, |
497 | -NET_IP_ALIGN, | |
498 | (skb->data - | |
499 | NET_IP_ALIGN), | |
500 | (length + | |
501 | NET_IP_ALIGN)); | |
bc7f75fa AK |
502 | /* save the skb in buffer_info as good */ |
503 | buffer_info->skb = skb; | |
504 | skb = new_skb; | |
505 | } | |
506 | /* else just continue with the old one */ | |
507 | } | |
508 | /* end copybreak code */ | |
509 | skb_put(skb, length); | |
510 | ||
511 | /* Receive Checksum Offload */ | |
512 | e1000_rx_checksum(adapter, | |
513 | (u32)(status) | | |
514 | ((u32)(rx_desc->errors) << 24), | |
515 | le16_to_cpu(rx_desc->csum), skb); | |
516 | ||
517 | e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); | |
518 | ||
519 | next_desc: | |
520 | rx_desc->status = 0; | |
521 | ||
522 | /* return some buffers to hardware, one at a time is too slow */ | |
523 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
524 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
525 | cleaned_count = 0; | |
526 | } | |
527 | ||
528 | /* use prefetched values */ | |
529 | rx_desc = next_rxd; | |
530 | buffer_info = next_buffer; | |
531 | } | |
532 | rx_ring->next_to_clean = i; | |
533 | ||
534 | cleaned_count = e1000_desc_unused(rx_ring); | |
535 | if (cleaned_count) | |
536 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
537 | ||
bc7f75fa | 538 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 539 | adapter->total_rx_packets += total_rx_packets; |
7274c20f AK |
540 | netdev->stats.rx_bytes += total_rx_bytes; |
541 | netdev->stats.rx_packets += total_rx_packets; | |
bc7f75fa AK |
542 | return cleaned; |
543 | } | |
544 | ||
bc7f75fa AK |
545 | static void e1000_put_txbuf(struct e1000_adapter *adapter, |
546 | struct e1000_buffer *buffer_info) | |
547 | { | |
03b1320d AD |
548 | if (buffer_info->dma) { |
549 | if (buffer_info->mapped_as_page) | |
550 | pci_unmap_page(adapter->pdev, buffer_info->dma, | |
551 | buffer_info->length, PCI_DMA_TODEVICE); | |
552 | else | |
553 | pci_unmap_single(adapter->pdev, buffer_info->dma, | |
554 | buffer_info->length, | |
555 | PCI_DMA_TODEVICE); | |
556 | buffer_info->dma = 0; | |
557 | } | |
bc7f75fa AK |
558 | if (buffer_info->skb) { |
559 | dev_kfree_skb_any(buffer_info->skb); | |
560 | buffer_info->skb = NULL; | |
561 | } | |
1b7719c4 | 562 | buffer_info->time_stamp = 0; |
bc7f75fa AK |
563 | } |
564 | ||
41cec6f1 | 565 | static void e1000_print_hw_hang(struct work_struct *work) |
bc7f75fa | 566 | { |
41cec6f1 BA |
567 | struct e1000_adapter *adapter = container_of(work, |
568 | struct e1000_adapter, | |
569 | print_hang_task); | |
bc7f75fa AK |
570 | struct e1000_ring *tx_ring = adapter->tx_ring; |
571 | unsigned int i = tx_ring->next_to_clean; | |
572 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
573 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
41cec6f1 BA |
574 | struct e1000_hw *hw = &adapter->hw; |
575 | u16 phy_status, phy_1000t_status, phy_ext_status; | |
576 | u16 pci_status; | |
577 | ||
578 | e1e_rphy(hw, PHY_STATUS, &phy_status); | |
579 | e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); | |
580 | e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); | |
bc7f75fa | 581 | |
41cec6f1 BA |
582 | pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
583 | ||
584 | /* detected Hardware unit hang */ | |
585 | e_err("Detected Hardware Unit Hang:\n" | |
44defeb3 JK |
586 | " TDH <%x>\n" |
587 | " TDT <%x>\n" | |
588 | " next_to_use <%x>\n" | |
589 | " next_to_clean <%x>\n" | |
590 | "buffer_info[next_to_clean]:\n" | |
591 | " time_stamp <%lx>\n" | |
592 | " next_to_watch <%x>\n" | |
593 | " jiffies <%lx>\n" | |
41cec6f1 BA |
594 | " next_to_watch.status <%x>\n" |
595 | "MAC Status <%x>\n" | |
596 | "PHY Status <%x>\n" | |
597 | "PHY 1000BASE-T Status <%x>\n" | |
598 | "PHY Extended Status <%x>\n" | |
599 | "PCI Status <%x>\n", | |
44defeb3 JK |
600 | readl(adapter->hw.hw_addr + tx_ring->head), |
601 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
602 | tx_ring->next_to_use, | |
603 | tx_ring->next_to_clean, | |
604 | tx_ring->buffer_info[eop].time_stamp, | |
605 | eop, | |
606 | jiffies, | |
41cec6f1 BA |
607 | eop_desc->upper.fields.status, |
608 | er32(STATUS), | |
609 | phy_status, | |
610 | phy_1000t_status, | |
611 | phy_ext_status, | |
612 | pci_status); | |
bc7f75fa AK |
613 | } |
614 | ||
615 | /** | |
616 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
617 | * @adapter: board private structure | |
618 | * | |
619 | * the return value indicates whether actual cleaning was done, there | |
620 | * is no guarantee that everything was cleaned | |
621 | **/ | |
622 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
623 | { | |
624 | struct net_device *netdev = adapter->netdev; | |
625 | struct e1000_hw *hw = &adapter->hw; | |
626 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
627 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
628 | struct e1000_buffer *buffer_info; | |
629 | unsigned int i, eop; | |
630 | unsigned int count = 0; | |
bc7f75fa AK |
631 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
632 | ||
633 | i = tx_ring->next_to_clean; | |
634 | eop = tx_ring->buffer_info[i].next_to_watch; | |
635 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
636 | ||
12d04a3c AD |
637 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
638 | (count < tx_ring->count)) { | |
a86043c2 JB |
639 | bool cleaned = false; |
640 | for (; !cleaned; count++) { | |
bc7f75fa AK |
641 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
642 | buffer_info = &tx_ring->buffer_info[i]; | |
643 | cleaned = (i == eop); | |
644 | ||
645 | if (cleaned) { | |
646 | struct sk_buff *skb = buffer_info->skb; | |
647 | unsigned int segs, bytecount; | |
648 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
649 | /* multiply data chunks by size of headers */ | |
650 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
651 | skb->len; | |
652 | total_tx_packets += segs; | |
653 | total_tx_bytes += bytecount; | |
654 | } | |
655 | ||
656 | e1000_put_txbuf(adapter, buffer_info); | |
657 | tx_desc->upper.data = 0; | |
658 | ||
659 | i++; | |
660 | if (i == tx_ring->count) | |
661 | i = 0; | |
662 | } | |
663 | ||
664 | eop = tx_ring->buffer_info[i].next_to_watch; | |
665 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
bc7f75fa AK |
666 | } |
667 | ||
668 | tx_ring->next_to_clean = i; | |
669 | ||
670 | #define TX_WAKE_THRESHOLD 32 | |
a86043c2 JB |
671 | if (count && netif_carrier_ok(netdev) && |
672 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
bc7f75fa AK |
673 | /* Make sure that anybody stopping the queue after this |
674 | * sees the new next_to_clean. | |
675 | */ | |
676 | smp_mb(); | |
677 | ||
678 | if (netif_queue_stopped(netdev) && | |
679 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
680 | netif_wake_queue(netdev); | |
681 | ++adapter->restart_queue; | |
682 | } | |
683 | } | |
684 | ||
685 | if (adapter->detect_tx_hung) { | |
41cec6f1 BA |
686 | /* |
687 | * Detect a transmit hang in hardware, this serializes the | |
688 | * check with the clearing of time_stamp and movement of i | |
689 | */ | |
bc7f75fa | 690 | adapter->detect_tx_hung = 0; |
12d04a3c AD |
691 | if (tx_ring->buffer_info[i].time_stamp && |
692 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp | |
8e95a202 JP |
693 | + (adapter->tx_timeout_factor * HZ)) && |
694 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
41cec6f1 | 695 | schedule_work(&adapter->print_hang_task); |
bc7f75fa AK |
696 | netif_stop_queue(netdev); |
697 | } | |
698 | } | |
699 | adapter->total_tx_bytes += total_tx_bytes; | |
700 | adapter->total_tx_packets += total_tx_packets; | |
7274c20f AK |
701 | netdev->stats.tx_bytes += total_tx_bytes; |
702 | netdev->stats.tx_packets += total_tx_packets; | |
12d04a3c | 703 | return (count < tx_ring->count); |
bc7f75fa AK |
704 | } |
705 | ||
bc7f75fa AK |
706 | /** |
707 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
708 | * @adapter: board private structure | |
709 | * | |
710 | * the return value indicates whether actual cleaning was done, there | |
711 | * is no guarantee that everything was cleaned | |
712 | **/ | |
713 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
714 | int *work_done, int work_to_do) | |
715 | { | |
3bb99fe2 | 716 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
717 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
718 | struct net_device *netdev = adapter->netdev; | |
719 | struct pci_dev *pdev = adapter->pdev; | |
720 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
721 | struct e1000_buffer *buffer_info, *next_buffer; | |
722 | struct e1000_ps_page *ps_page; | |
723 | struct sk_buff *skb; | |
724 | unsigned int i, j; | |
725 | u32 length, staterr; | |
726 | int cleaned_count = 0; | |
727 | bool cleaned = 0; | |
728 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
729 | ||
730 | i = rx_ring->next_to_clean; | |
731 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
732 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
733 | buffer_info = &rx_ring->buffer_info[i]; | |
734 | ||
735 | while (staterr & E1000_RXD_STAT_DD) { | |
736 | if (*work_done >= work_to_do) | |
737 | break; | |
738 | (*work_done)++; | |
739 | skb = buffer_info->skb; | |
740 | ||
741 | /* in the packet split case this is header only */ | |
742 | prefetch(skb->data - NET_IP_ALIGN); | |
743 | ||
744 | i++; | |
745 | if (i == rx_ring->count) | |
746 | i = 0; | |
747 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
748 | prefetch(next_rxd); | |
749 | ||
750 | next_buffer = &rx_ring->buffer_info[i]; | |
751 | ||
752 | cleaned = 1; | |
753 | cleaned_count++; | |
754 | pci_unmap_single(pdev, buffer_info->dma, | |
755 | adapter->rx_ps_bsize0, | |
756 | PCI_DMA_FROMDEVICE); | |
757 | buffer_info->dma = 0; | |
758 | ||
b94b5028 JB |
759 | /* see !EOP comment in other rx routine */ |
760 | if (!(staterr & E1000_RXD_STAT_EOP)) | |
761 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
762 | ||
763 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
3bb99fe2 BA |
764 | e_dbg("Packet Split buffers didn't pick up the full " |
765 | "packet\n"); | |
bc7f75fa | 766 | dev_kfree_skb_irq(skb); |
b94b5028 JB |
767 | if (staterr & E1000_RXD_STAT_EOP) |
768 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
769 | goto next_desc; |
770 | } | |
771 | ||
772 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
773 | dev_kfree_skb_irq(skb); | |
774 | goto next_desc; | |
775 | } | |
776 | ||
777 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
778 | ||
779 | if (!length) { | |
3bb99fe2 BA |
780 | e_dbg("Last part of the packet spanning multiple " |
781 | "descriptors\n"); | |
bc7f75fa AK |
782 | dev_kfree_skb_irq(skb); |
783 | goto next_desc; | |
784 | } | |
785 | ||
786 | /* Good Receive */ | |
787 | skb_put(skb, length); | |
788 | ||
789 | { | |
ad68076e BA |
790 | /* |
791 | * this looks ugly, but it seems compiler issues make it | |
792 | * more efficient than reusing j | |
793 | */ | |
bc7f75fa AK |
794 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
795 | ||
ad68076e BA |
796 | /* |
797 | * page alloc/put takes too long and effects small packet | |
798 | * throughput, so unsplit small packets and save the alloc/put | |
799 | * only valid in softirq (napi) context to call kmap_* | |
800 | */ | |
bc7f75fa AK |
801 | if (l1 && (l1 <= copybreak) && |
802 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
803 | u8 *vaddr; | |
804 | ||
47f44e40 | 805 | ps_page = &buffer_info->ps_pages[0]; |
bc7f75fa | 806 | |
ad68076e BA |
807 | /* |
808 | * there is no documentation about how to call | |
bc7f75fa | 809 | * kmap_atomic, so we can't hold the mapping |
ad68076e BA |
810 | * very long |
811 | */ | |
bc7f75fa AK |
812 | pci_dma_sync_single_for_cpu(pdev, ps_page->dma, |
813 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
814 | vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); | |
815 | memcpy(skb_tail_pointer(skb), vaddr, l1); | |
816 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
817 | pci_dma_sync_single_for_device(pdev, ps_page->dma, | |
818 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
140a7480 | 819 | |
eb7c3adb JK |
820 | /* remove the CRC */ |
821 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
822 | l1 -= 4; | |
823 | ||
bc7f75fa AK |
824 | skb_put(skb, l1); |
825 | goto copydone; | |
826 | } /* if */ | |
827 | } | |
828 | ||
829 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
830 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
831 | if (!length) | |
832 | break; | |
833 | ||
47f44e40 | 834 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
835 | pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, |
836 | PCI_DMA_FROMDEVICE); | |
837 | ps_page->dma = 0; | |
838 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
839 | ps_page->page = NULL; | |
840 | skb->len += length; | |
841 | skb->data_len += length; | |
842 | skb->truesize += length; | |
843 | } | |
844 | ||
eb7c3adb JK |
845 | /* strip the ethernet crc, problem is we're using pages now so |
846 | * this whole operation can get a little cpu intensive | |
847 | */ | |
848 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
849 | pskb_trim(skb, skb->len - 4); | |
850 | ||
bc7f75fa AK |
851 | copydone: |
852 | total_rx_bytes += skb->len; | |
853 | total_rx_packets++; | |
854 | ||
855 | e1000_rx_checksum(adapter, staterr, le16_to_cpu( | |
856 | rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); | |
857 | ||
858 | if (rx_desc->wb.upper.header_status & | |
859 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) | |
860 | adapter->rx_hdr_split++; | |
861 | ||
862 | e1000_receive_skb(adapter, netdev, skb, | |
863 | staterr, rx_desc->wb.middle.vlan); | |
864 | ||
865 | next_desc: | |
866 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
867 | buffer_info->skb = NULL; | |
868 | ||
869 | /* return some buffers to hardware, one at a time is too slow */ | |
870 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
871 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
872 | cleaned_count = 0; | |
873 | } | |
874 | ||
875 | /* use prefetched values */ | |
876 | rx_desc = next_rxd; | |
877 | buffer_info = next_buffer; | |
878 | ||
879 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
880 | } | |
881 | rx_ring->next_to_clean = i; | |
882 | ||
883 | cleaned_count = e1000_desc_unused(rx_ring); | |
884 | if (cleaned_count) | |
885 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
886 | ||
bc7f75fa | 887 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 888 | adapter->total_rx_packets += total_rx_packets; |
7274c20f AK |
889 | netdev->stats.rx_bytes += total_rx_bytes; |
890 | netdev->stats.rx_packets += total_rx_packets; | |
bc7f75fa AK |
891 | return cleaned; |
892 | } | |
893 | ||
97ac8cae BA |
894 | /** |
895 | * e1000_consume_page - helper function | |
896 | **/ | |
897 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
898 | u16 length) | |
899 | { | |
900 | bi->page = NULL; | |
901 | skb->len += length; | |
902 | skb->data_len += length; | |
903 | skb->truesize += length; | |
904 | } | |
905 | ||
906 | /** | |
907 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
908 | * @adapter: board private structure | |
909 | * | |
910 | * the return value indicates whether actual cleaning was done, there | |
911 | * is no guarantee that everything was cleaned | |
912 | **/ | |
913 | ||
914 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
915 | int *work_done, int work_to_do) | |
916 | { | |
917 | struct net_device *netdev = adapter->netdev; | |
918 | struct pci_dev *pdev = adapter->pdev; | |
919 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
920 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
921 | struct e1000_buffer *buffer_info, *next_buffer; | |
922 | u32 length; | |
923 | unsigned int i; | |
924 | int cleaned_count = 0; | |
925 | bool cleaned = false; | |
926 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
927 | ||
928 | i = rx_ring->next_to_clean; | |
929 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
930 | buffer_info = &rx_ring->buffer_info[i]; | |
931 | ||
932 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
933 | struct sk_buff *skb; | |
934 | u8 status; | |
935 | ||
936 | if (*work_done >= work_to_do) | |
937 | break; | |
938 | (*work_done)++; | |
939 | ||
940 | status = rx_desc->status; | |
941 | skb = buffer_info->skb; | |
942 | buffer_info->skb = NULL; | |
943 | ||
944 | ++i; | |
945 | if (i == rx_ring->count) | |
946 | i = 0; | |
947 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
948 | prefetch(next_rxd); | |
949 | ||
950 | next_buffer = &rx_ring->buffer_info[i]; | |
951 | ||
952 | cleaned = true; | |
953 | cleaned_count++; | |
954 | pci_unmap_page(pdev, buffer_info->dma, PAGE_SIZE, | |
955 | PCI_DMA_FROMDEVICE); | |
956 | buffer_info->dma = 0; | |
957 | ||
958 | length = le16_to_cpu(rx_desc->length); | |
959 | ||
960 | /* errors is only valid for DD + EOP descriptors */ | |
961 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
962 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
963 | /* recycle both page and skb */ | |
964 | buffer_info->skb = skb; | |
965 | /* an error means any chain goes out the window | |
966 | * too */ | |
967 | if (rx_ring->rx_skb_top) | |
968 | dev_kfree_skb(rx_ring->rx_skb_top); | |
969 | rx_ring->rx_skb_top = NULL; | |
970 | goto next_desc; | |
971 | } | |
972 | ||
973 | #define rxtop rx_ring->rx_skb_top | |
974 | if (!(status & E1000_RXD_STAT_EOP)) { | |
975 | /* this descriptor is only the beginning (or middle) */ | |
976 | if (!rxtop) { | |
977 | /* this is the beginning of a chain */ | |
978 | rxtop = skb; | |
979 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
980 | 0, length); | |
981 | } else { | |
982 | /* this is the middle of a chain */ | |
983 | skb_fill_page_desc(rxtop, | |
984 | skb_shinfo(rxtop)->nr_frags, | |
985 | buffer_info->page, 0, length); | |
986 | /* re-use the skb, only consumed the page */ | |
987 | buffer_info->skb = skb; | |
988 | } | |
989 | e1000_consume_page(buffer_info, rxtop, length); | |
990 | goto next_desc; | |
991 | } else { | |
992 | if (rxtop) { | |
993 | /* end of the chain */ | |
994 | skb_fill_page_desc(rxtop, | |
995 | skb_shinfo(rxtop)->nr_frags, | |
996 | buffer_info->page, 0, length); | |
997 | /* re-use the current skb, we only consumed the | |
998 | * page */ | |
999 | buffer_info->skb = skb; | |
1000 | skb = rxtop; | |
1001 | rxtop = NULL; | |
1002 | e1000_consume_page(buffer_info, skb, length); | |
1003 | } else { | |
1004 | /* no chain, got EOP, this buf is the packet | |
1005 | * copybreak to save the put_page/alloc_page */ | |
1006 | if (length <= copybreak && | |
1007 | skb_tailroom(skb) >= length) { | |
1008 | u8 *vaddr; | |
1009 | vaddr = kmap_atomic(buffer_info->page, | |
1010 | KM_SKB_DATA_SOFTIRQ); | |
1011 | memcpy(skb_tail_pointer(skb), vaddr, | |
1012 | length); | |
1013 | kunmap_atomic(vaddr, | |
1014 | KM_SKB_DATA_SOFTIRQ); | |
1015 | /* re-use the page, so don't erase | |
1016 | * buffer_info->page */ | |
1017 | skb_put(skb, length); | |
1018 | } else { | |
1019 | skb_fill_page_desc(skb, 0, | |
1020 | buffer_info->page, 0, | |
1021 | length); | |
1022 | e1000_consume_page(buffer_info, skb, | |
1023 | length); | |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
1029 | e1000_rx_checksum(adapter, | |
1030 | (u32)(status) | | |
1031 | ((u32)(rx_desc->errors) << 24), | |
1032 | le16_to_cpu(rx_desc->csum), skb); | |
1033 | ||
1034 | /* probably a little skewed due to removing CRC */ | |
1035 | total_rx_bytes += skb->len; | |
1036 | total_rx_packets++; | |
1037 | ||
1038 | /* eth type trans needs skb->data to point to something */ | |
1039 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
44defeb3 | 1040 | e_err("pskb_may_pull failed.\n"); |
97ac8cae BA |
1041 | dev_kfree_skb(skb); |
1042 | goto next_desc; | |
1043 | } | |
1044 | ||
1045 | e1000_receive_skb(adapter, netdev, skb, status, | |
1046 | rx_desc->special); | |
1047 | ||
1048 | next_desc: | |
1049 | rx_desc->status = 0; | |
1050 | ||
1051 | /* return some buffers to hardware, one at a time is too slow */ | |
1052 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
1053 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1054 | cleaned_count = 0; | |
1055 | } | |
1056 | ||
1057 | /* use prefetched values */ | |
1058 | rx_desc = next_rxd; | |
1059 | buffer_info = next_buffer; | |
1060 | } | |
1061 | rx_ring->next_to_clean = i; | |
1062 | ||
1063 | cleaned_count = e1000_desc_unused(rx_ring); | |
1064 | if (cleaned_count) | |
1065 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1066 | ||
1067 | adapter->total_rx_bytes += total_rx_bytes; | |
1068 | adapter->total_rx_packets += total_rx_packets; | |
7274c20f AK |
1069 | netdev->stats.rx_bytes += total_rx_bytes; |
1070 | netdev->stats.rx_packets += total_rx_packets; | |
97ac8cae BA |
1071 | return cleaned; |
1072 | } | |
1073 | ||
bc7f75fa AK |
1074 | /** |
1075 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1076 | * @adapter: board private structure | |
1077 | **/ | |
1078 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1079 | { | |
1080 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1081 | struct e1000_buffer *buffer_info; | |
1082 | struct e1000_ps_page *ps_page; | |
1083 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1084 | unsigned int i, j; |
1085 | ||
1086 | /* Free all the Rx ring sk_buffs */ | |
1087 | for (i = 0; i < rx_ring->count; i++) { | |
1088 | buffer_info = &rx_ring->buffer_info[i]; | |
1089 | if (buffer_info->dma) { | |
1090 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
1091 | pci_unmap_single(pdev, buffer_info->dma, | |
1092 | adapter->rx_buffer_len, | |
1093 | PCI_DMA_FROMDEVICE); | |
97ac8cae BA |
1094 | else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
1095 | pci_unmap_page(pdev, buffer_info->dma, | |
1096 | PAGE_SIZE, | |
1097 | PCI_DMA_FROMDEVICE); | |
bc7f75fa AK |
1098 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
1099 | pci_unmap_single(pdev, buffer_info->dma, | |
1100 | adapter->rx_ps_bsize0, | |
1101 | PCI_DMA_FROMDEVICE); | |
1102 | buffer_info->dma = 0; | |
1103 | } | |
1104 | ||
97ac8cae BA |
1105 | if (buffer_info->page) { |
1106 | put_page(buffer_info->page); | |
1107 | buffer_info->page = NULL; | |
1108 | } | |
1109 | ||
bc7f75fa AK |
1110 | if (buffer_info->skb) { |
1111 | dev_kfree_skb(buffer_info->skb); | |
1112 | buffer_info->skb = NULL; | |
1113 | } | |
1114 | ||
1115 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 | 1116 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
1117 | if (!ps_page->page) |
1118 | break; | |
1119 | pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, | |
1120 | PCI_DMA_FROMDEVICE); | |
1121 | ps_page->dma = 0; | |
1122 | put_page(ps_page->page); | |
1123 | ps_page->page = NULL; | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | /* there also may be some cached data from a chained receive */ | |
1128 | if (rx_ring->rx_skb_top) { | |
1129 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1130 | rx_ring->rx_skb_top = NULL; | |
1131 | } | |
1132 | ||
bc7f75fa AK |
1133 | /* Zero out the descriptor ring */ |
1134 | memset(rx_ring->desc, 0, rx_ring->size); | |
1135 | ||
1136 | rx_ring->next_to_clean = 0; | |
1137 | rx_ring->next_to_use = 0; | |
b94b5028 | 1138 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa AK |
1139 | |
1140 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1141 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1142 | } | |
1143 | ||
a8f88ff5 JB |
1144 | static void e1000e_downshift_workaround(struct work_struct *work) |
1145 | { | |
1146 | struct e1000_adapter *adapter = container_of(work, | |
1147 | struct e1000_adapter, downshift_task); | |
1148 | ||
1149 | e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); | |
1150 | } | |
1151 | ||
bc7f75fa AK |
1152 | /** |
1153 | * e1000_intr_msi - Interrupt Handler | |
1154 | * @irq: interrupt number | |
1155 | * @data: pointer to a network interface device structure | |
1156 | **/ | |
1157 | static irqreturn_t e1000_intr_msi(int irq, void *data) | |
1158 | { | |
1159 | struct net_device *netdev = data; | |
1160 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1161 | struct e1000_hw *hw = &adapter->hw; | |
1162 | u32 icr = er32(ICR); | |
1163 | ||
ad68076e BA |
1164 | /* |
1165 | * read ICR disables interrupts using IAM | |
1166 | */ | |
bc7f75fa | 1167 | |
573cca8c | 1168 | if (icr & E1000_ICR_LSC) { |
bc7f75fa | 1169 | hw->mac.get_link_status = 1; |
ad68076e BA |
1170 | /* |
1171 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1172 | * disconnect (LSC) before accessing any PHY registers | |
1173 | */ | |
bc7f75fa AK |
1174 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1175 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1176 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1177 | |
ad68076e BA |
1178 | /* |
1179 | * 80003ES2LAN workaround-- For packet buffer work-around on | |
bc7f75fa | 1180 | * link down event; disable receives here in the ISR and reset |
ad68076e BA |
1181 | * adapter in watchdog |
1182 | */ | |
bc7f75fa AK |
1183 | if (netif_carrier_ok(netdev) && |
1184 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1185 | /* disable receives */ | |
1186 | u32 rctl = er32(RCTL); | |
1187 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1188 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1189 | } |
1190 | /* guard against interrupt when we're going down */ | |
1191 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1192 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1193 | } | |
1194 | ||
288379f0 | 1195 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1196 | adapter->total_tx_bytes = 0; |
1197 | adapter->total_tx_packets = 0; | |
1198 | adapter->total_rx_bytes = 0; | |
1199 | adapter->total_rx_packets = 0; | |
288379f0 | 1200 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1201 | } |
1202 | ||
1203 | return IRQ_HANDLED; | |
1204 | } | |
1205 | ||
1206 | /** | |
1207 | * e1000_intr - Interrupt Handler | |
1208 | * @irq: interrupt number | |
1209 | * @data: pointer to a network interface device structure | |
1210 | **/ | |
1211 | static irqreturn_t e1000_intr(int irq, void *data) | |
1212 | { | |
1213 | struct net_device *netdev = data; | |
1214 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1215 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 1216 | u32 rctl, icr = er32(ICR); |
4662e82b | 1217 | |
a68ea775 | 1218 | if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
bc7f75fa AK |
1219 | return IRQ_NONE; /* Not our interrupt */ |
1220 | ||
ad68076e BA |
1221 | /* |
1222 | * IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
1223 | * not set, then the adapter didn't send an interrupt | |
1224 | */ | |
bc7f75fa AK |
1225 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
1226 | return IRQ_NONE; | |
1227 | ||
ad68076e BA |
1228 | /* |
1229 | * Interrupt Auto-Mask...upon reading ICR, | |
1230 | * interrupts are masked. No need for the | |
1231 | * IMC write | |
1232 | */ | |
bc7f75fa | 1233 | |
573cca8c | 1234 | if (icr & E1000_ICR_LSC) { |
bc7f75fa | 1235 | hw->mac.get_link_status = 1; |
ad68076e BA |
1236 | /* |
1237 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1238 | * disconnect (LSC) before accessing any PHY registers | |
1239 | */ | |
bc7f75fa AK |
1240 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1241 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1242 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1243 | |
ad68076e BA |
1244 | /* |
1245 | * 80003ES2LAN workaround-- | |
bc7f75fa AK |
1246 | * For packet buffer work-around on link down event; |
1247 | * disable receives here in the ISR and | |
1248 | * reset adapter in watchdog | |
1249 | */ | |
1250 | if (netif_carrier_ok(netdev) && | |
1251 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1252 | /* disable receives */ | |
1253 | rctl = er32(RCTL); | |
1254 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1255 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1256 | } |
1257 | /* guard against interrupt when we're going down */ | |
1258 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1259 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1260 | } | |
1261 | ||
288379f0 | 1262 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1263 | adapter->total_tx_bytes = 0; |
1264 | adapter->total_tx_packets = 0; | |
1265 | adapter->total_rx_bytes = 0; | |
1266 | adapter->total_rx_packets = 0; | |
288379f0 | 1267 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1268 | } |
1269 | ||
1270 | return IRQ_HANDLED; | |
1271 | } | |
1272 | ||
4662e82b BA |
1273 | static irqreturn_t e1000_msix_other(int irq, void *data) |
1274 | { | |
1275 | struct net_device *netdev = data; | |
1276 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1277 | struct e1000_hw *hw = &adapter->hw; | |
1278 | u32 icr = er32(ICR); | |
1279 | ||
1280 | if (!(icr & E1000_ICR_INT_ASSERTED)) { | |
a3c69fef JB |
1281 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1282 | ew32(IMS, E1000_IMS_OTHER); | |
4662e82b BA |
1283 | return IRQ_NONE; |
1284 | } | |
1285 | ||
1286 | if (icr & adapter->eiac_mask) | |
1287 | ew32(ICS, (icr & adapter->eiac_mask)); | |
1288 | ||
1289 | if (icr & E1000_ICR_OTHER) { | |
1290 | if (!(icr & E1000_ICR_LSC)) | |
1291 | goto no_link_interrupt; | |
1292 | hw->mac.get_link_status = 1; | |
1293 | /* guard against interrupt when we're going down */ | |
1294 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1295 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1296 | } | |
1297 | ||
1298 | no_link_interrupt: | |
a3c69fef JB |
1299 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1300 | ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); | |
4662e82b BA |
1301 | |
1302 | return IRQ_HANDLED; | |
1303 | } | |
1304 | ||
1305 | ||
1306 | static irqreturn_t e1000_intr_msix_tx(int irq, void *data) | |
1307 | { | |
1308 | struct net_device *netdev = data; | |
1309 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1310 | struct e1000_hw *hw = &adapter->hw; | |
1311 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1312 | ||
1313 | ||
1314 | adapter->total_tx_bytes = 0; | |
1315 | adapter->total_tx_packets = 0; | |
1316 | ||
1317 | if (!e1000_clean_tx_irq(adapter)) | |
1318 | /* Ring was not completely cleaned, so fire another interrupt */ | |
1319 | ew32(ICS, tx_ring->ims_val); | |
1320 | ||
1321 | return IRQ_HANDLED; | |
1322 | } | |
1323 | ||
1324 | static irqreturn_t e1000_intr_msix_rx(int irq, void *data) | |
1325 | { | |
1326 | struct net_device *netdev = data; | |
1327 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1328 | ||
1329 | /* Write the ITR value calculated at the end of the | |
1330 | * previous interrupt. | |
1331 | */ | |
1332 | if (adapter->rx_ring->set_itr) { | |
1333 | writel(1000000000 / (adapter->rx_ring->itr_val * 256), | |
1334 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
1335 | adapter->rx_ring->set_itr = 0; | |
1336 | } | |
1337 | ||
288379f0 | 1338 | if (napi_schedule_prep(&adapter->napi)) { |
4662e82b BA |
1339 | adapter->total_rx_bytes = 0; |
1340 | adapter->total_rx_packets = 0; | |
288379f0 | 1341 | __napi_schedule(&adapter->napi); |
4662e82b BA |
1342 | } |
1343 | return IRQ_HANDLED; | |
1344 | } | |
1345 | ||
1346 | /** | |
1347 | * e1000_configure_msix - Configure MSI-X hardware | |
1348 | * | |
1349 | * e1000_configure_msix sets up the hardware to properly | |
1350 | * generate MSI-X interrupts. | |
1351 | **/ | |
1352 | static void e1000_configure_msix(struct e1000_adapter *adapter) | |
1353 | { | |
1354 | struct e1000_hw *hw = &adapter->hw; | |
1355 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1356 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1357 | int vector = 0; | |
1358 | u32 ctrl_ext, ivar = 0; | |
1359 | ||
1360 | adapter->eiac_mask = 0; | |
1361 | ||
1362 | /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ | |
1363 | if (hw->mac.type == e1000_82574) { | |
1364 | u32 rfctl = er32(RFCTL); | |
1365 | rfctl |= E1000_RFCTL_ACK_DIS; | |
1366 | ew32(RFCTL, rfctl); | |
1367 | } | |
1368 | ||
1369 | #define E1000_IVAR_INT_ALLOC_VALID 0x8 | |
1370 | /* Configure Rx vector */ | |
1371 | rx_ring->ims_val = E1000_IMS_RXQ0; | |
1372 | adapter->eiac_mask |= rx_ring->ims_val; | |
1373 | if (rx_ring->itr_val) | |
1374 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1375 | hw->hw_addr + rx_ring->itr_register); | |
1376 | else | |
1377 | writel(1, hw->hw_addr + rx_ring->itr_register); | |
1378 | ivar = E1000_IVAR_INT_ALLOC_VALID | vector; | |
1379 | ||
1380 | /* Configure Tx vector */ | |
1381 | tx_ring->ims_val = E1000_IMS_TXQ0; | |
1382 | vector++; | |
1383 | if (tx_ring->itr_val) | |
1384 | writel(1000000000 / (tx_ring->itr_val * 256), | |
1385 | hw->hw_addr + tx_ring->itr_register); | |
1386 | else | |
1387 | writel(1, hw->hw_addr + tx_ring->itr_register); | |
1388 | adapter->eiac_mask |= tx_ring->ims_val; | |
1389 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); | |
1390 | ||
1391 | /* set vector for Other Causes, e.g. link changes */ | |
1392 | vector++; | |
1393 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); | |
1394 | if (rx_ring->itr_val) | |
1395 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1396 | hw->hw_addr + E1000_EITR_82574(vector)); | |
1397 | else | |
1398 | writel(1, hw->hw_addr + E1000_EITR_82574(vector)); | |
1399 | ||
1400 | /* Cause Tx interrupts on every write back */ | |
1401 | ivar |= (1 << 31); | |
1402 | ||
1403 | ew32(IVAR, ivar); | |
1404 | ||
1405 | /* enable MSI-X PBA support */ | |
1406 | ctrl_ext = er32(CTRL_EXT); | |
1407 | ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; | |
1408 | ||
1409 | /* Auto-Mask Other interrupts upon ICR read */ | |
1410 | #define E1000_EIAC_MASK_82574 0x01F00000 | |
1411 | ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); | |
1412 | ctrl_ext |= E1000_CTRL_EXT_EIAME; | |
1413 | ew32(CTRL_EXT, ctrl_ext); | |
1414 | e1e_flush(); | |
1415 | } | |
1416 | ||
1417 | void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) | |
1418 | { | |
1419 | if (adapter->msix_entries) { | |
1420 | pci_disable_msix(adapter->pdev); | |
1421 | kfree(adapter->msix_entries); | |
1422 | adapter->msix_entries = NULL; | |
1423 | } else if (adapter->flags & FLAG_MSI_ENABLED) { | |
1424 | pci_disable_msi(adapter->pdev); | |
1425 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
1426 | } | |
1427 | ||
1428 | return; | |
1429 | } | |
1430 | ||
1431 | /** | |
1432 | * e1000e_set_interrupt_capability - set MSI or MSI-X if supported | |
1433 | * | |
1434 | * Attempt to configure interrupts using the best available | |
1435 | * capabilities of the hardware and kernel. | |
1436 | **/ | |
1437 | void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) | |
1438 | { | |
1439 | int err; | |
1440 | int numvecs, i; | |
1441 | ||
1442 | ||
1443 | switch (adapter->int_mode) { | |
1444 | case E1000E_INT_MODE_MSIX: | |
1445 | if (adapter->flags & FLAG_HAS_MSIX) { | |
1446 | numvecs = 3; /* RxQ0, TxQ0 and other */ | |
1447 | adapter->msix_entries = kcalloc(numvecs, | |
1448 | sizeof(struct msix_entry), | |
1449 | GFP_KERNEL); | |
1450 | if (adapter->msix_entries) { | |
1451 | for (i = 0; i < numvecs; i++) | |
1452 | adapter->msix_entries[i].entry = i; | |
1453 | ||
1454 | err = pci_enable_msix(adapter->pdev, | |
1455 | adapter->msix_entries, | |
1456 | numvecs); | |
1457 | if (err == 0) | |
1458 | return; | |
1459 | } | |
1460 | /* MSI-X failed, so fall through and try MSI */ | |
1461 | e_err("Failed to initialize MSI-X interrupts. " | |
1462 | "Falling back to MSI interrupts.\n"); | |
1463 | e1000e_reset_interrupt_capability(adapter); | |
1464 | } | |
1465 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1466 | /* Fall through */ | |
1467 | case E1000E_INT_MODE_MSI: | |
1468 | if (!pci_enable_msi(adapter->pdev)) { | |
1469 | adapter->flags |= FLAG_MSI_ENABLED; | |
1470 | } else { | |
1471 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
1472 | e_err("Failed to initialize MSI interrupts. Falling " | |
1473 | "back to legacy interrupts.\n"); | |
1474 | } | |
1475 | /* Fall through */ | |
1476 | case E1000E_INT_MODE_LEGACY: | |
1477 | /* Don't do anything; this is the system default */ | |
1478 | break; | |
1479 | } | |
1480 | ||
1481 | return; | |
1482 | } | |
1483 | ||
1484 | /** | |
1485 | * e1000_request_msix - Initialize MSI-X interrupts | |
1486 | * | |
1487 | * e1000_request_msix allocates MSI-X vectors and requests interrupts from the | |
1488 | * kernel. | |
1489 | **/ | |
1490 | static int e1000_request_msix(struct e1000_adapter *adapter) | |
1491 | { | |
1492 | struct net_device *netdev = adapter->netdev; | |
1493 | int err = 0, vector = 0; | |
1494 | ||
1495 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 1496 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); |
4662e82b BA |
1497 | else |
1498 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1499 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1500 | e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
4662e82b BA |
1501 | netdev); |
1502 | if (err) | |
1503 | goto out; | |
1504 | adapter->rx_ring->itr_register = E1000_EITR_82574(vector); | |
1505 | adapter->rx_ring->itr_val = adapter->itr; | |
1506 | vector++; | |
1507 | ||
1508 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 1509 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); |
4662e82b BA |
1510 | else |
1511 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1512 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1513 | e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
4662e82b BA |
1514 | netdev); |
1515 | if (err) | |
1516 | goto out; | |
1517 | adapter->tx_ring->itr_register = E1000_EITR_82574(vector); | |
1518 | adapter->tx_ring->itr_val = adapter->itr; | |
1519 | vector++; | |
1520 | ||
1521 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1522 | e1000_msix_other, 0, netdev->name, netdev); |
4662e82b BA |
1523 | if (err) |
1524 | goto out; | |
1525 | ||
1526 | e1000_configure_msix(adapter); | |
1527 | return 0; | |
1528 | out: | |
1529 | return err; | |
1530 | } | |
1531 | ||
f8d59f78 BA |
1532 | /** |
1533 | * e1000_request_irq - initialize interrupts | |
1534 | * | |
1535 | * Attempts to configure interrupts using the best available | |
1536 | * capabilities of the hardware and kernel. | |
1537 | **/ | |
bc7f75fa AK |
1538 | static int e1000_request_irq(struct e1000_adapter *adapter) |
1539 | { | |
1540 | struct net_device *netdev = adapter->netdev; | |
bc7f75fa AK |
1541 | int err; |
1542 | ||
4662e82b BA |
1543 | if (adapter->msix_entries) { |
1544 | err = e1000_request_msix(adapter); | |
1545 | if (!err) | |
1546 | return err; | |
1547 | /* fall back to MSI */ | |
1548 | e1000e_reset_interrupt_capability(adapter); | |
1549 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1550 | e1000e_set_interrupt_capability(adapter); | |
bc7f75fa | 1551 | } |
4662e82b | 1552 | if (adapter->flags & FLAG_MSI_ENABLED) { |
a0607fd3 | 1553 | err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
4662e82b BA |
1554 | netdev->name, netdev); |
1555 | if (!err) | |
1556 | return err; | |
bc7f75fa | 1557 | |
4662e82b BA |
1558 | /* fall back to legacy interrupt */ |
1559 | e1000e_reset_interrupt_capability(adapter); | |
1560 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
bc7f75fa AK |
1561 | } |
1562 | ||
a0607fd3 | 1563 | err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
4662e82b BA |
1564 | netdev->name, netdev); |
1565 | if (err) | |
1566 | e_err("Unable to allocate interrupt, Error: %d\n", err); | |
1567 | ||
bc7f75fa AK |
1568 | return err; |
1569 | } | |
1570 | ||
1571 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
1572 | { | |
1573 | struct net_device *netdev = adapter->netdev; | |
1574 | ||
4662e82b BA |
1575 | if (adapter->msix_entries) { |
1576 | int vector = 0; | |
1577 | ||
1578 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1579 | vector++; | |
1580 | ||
1581 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1582 | vector++; | |
1583 | ||
1584 | /* Other Causes interrupt vector */ | |
1585 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1586 | return; | |
bc7f75fa | 1587 | } |
4662e82b BA |
1588 | |
1589 | free_irq(adapter->pdev->irq, netdev); | |
bc7f75fa AK |
1590 | } |
1591 | ||
1592 | /** | |
1593 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
1594 | **/ | |
1595 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
1596 | { | |
1597 | struct e1000_hw *hw = &adapter->hw; | |
1598 | ||
bc7f75fa | 1599 | ew32(IMC, ~0); |
4662e82b BA |
1600 | if (adapter->msix_entries) |
1601 | ew32(EIAC_82574, 0); | |
bc7f75fa AK |
1602 | e1e_flush(); |
1603 | synchronize_irq(adapter->pdev->irq); | |
1604 | } | |
1605 | ||
1606 | /** | |
1607 | * e1000_irq_enable - Enable default interrupt generation settings | |
1608 | **/ | |
1609 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
1610 | { | |
1611 | struct e1000_hw *hw = &adapter->hw; | |
1612 | ||
4662e82b BA |
1613 | if (adapter->msix_entries) { |
1614 | ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); | |
1615 | ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); | |
1616 | } else { | |
1617 | ew32(IMS, IMS_ENABLE_MASK); | |
1618 | } | |
74ef9c39 | 1619 | e1e_flush(); |
bc7f75fa AK |
1620 | } |
1621 | ||
1622 | /** | |
1623 | * e1000_get_hw_control - get control of the h/w from f/w | |
1624 | * @adapter: address of board private structure | |
1625 | * | |
489815ce | 1626 | * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1627 | * For ASF and Pass Through versions of f/w this means that |
1628 | * the driver is loaded. For AMT version (only with 82573) | |
1629 | * of the f/w this means that the network i/f is open. | |
1630 | **/ | |
1631 | static void e1000_get_hw_control(struct e1000_adapter *adapter) | |
1632 | { | |
1633 | struct e1000_hw *hw = &adapter->hw; | |
1634 | u32 ctrl_ext; | |
1635 | u32 swsm; | |
1636 | ||
1637 | /* Let firmware know the driver has taken over */ | |
1638 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1639 | swsm = er32(SWSM); | |
1640 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
1641 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1642 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 1643 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
1644 | } |
1645 | } | |
1646 | ||
1647 | /** | |
1648 | * e1000_release_hw_control - release control of the h/w to f/w | |
1649 | * @adapter: address of board private structure | |
1650 | * | |
489815ce | 1651 | * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1652 | * For ASF and Pass Through versions of f/w this means that the |
1653 | * driver is no longer loaded. For AMT version (only with 82573) i | |
1654 | * of the f/w this means that the network i/f is closed. | |
1655 | * | |
1656 | **/ | |
1657 | static void e1000_release_hw_control(struct e1000_adapter *adapter) | |
1658 | { | |
1659 | struct e1000_hw *hw = &adapter->hw; | |
1660 | u32 ctrl_ext; | |
1661 | u32 swsm; | |
1662 | ||
1663 | /* Let firmware taken over control of h/w */ | |
1664 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1665 | swsm = er32(SWSM); | |
1666 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
1667 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1668 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 1669 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
1670 | } |
1671 | } | |
1672 | ||
bc7f75fa AK |
1673 | /** |
1674 | * @e1000_alloc_ring - allocate memory for a ring structure | |
1675 | **/ | |
1676 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
1677 | struct e1000_ring *ring) | |
1678 | { | |
1679 | struct pci_dev *pdev = adapter->pdev; | |
1680 | ||
1681 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
1682 | GFP_KERNEL); | |
1683 | if (!ring->desc) | |
1684 | return -ENOMEM; | |
1685 | ||
1686 | return 0; | |
1687 | } | |
1688 | ||
1689 | /** | |
1690 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
1691 | * @adapter: board private structure | |
1692 | * | |
1693 | * Return 0 on success, negative on failure | |
1694 | **/ | |
1695 | int e1000e_setup_tx_resources(struct e1000_adapter *adapter) | |
1696 | { | |
1697 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1698 | int err = -ENOMEM, size; | |
1699 | ||
1700 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1701 | tx_ring->buffer_info = vmalloc(size); | |
1702 | if (!tx_ring->buffer_info) | |
1703 | goto err; | |
1704 | memset(tx_ring->buffer_info, 0, size); | |
1705 | ||
1706 | /* round up to nearest 4K */ | |
1707 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
1708 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
1709 | ||
1710 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
1711 | if (err) | |
1712 | goto err; | |
1713 | ||
1714 | tx_ring->next_to_use = 0; | |
1715 | tx_ring->next_to_clean = 0; | |
bc7f75fa AK |
1716 | |
1717 | return 0; | |
1718 | err: | |
1719 | vfree(tx_ring->buffer_info); | |
44defeb3 | 1720 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
1721 | return err; |
1722 | } | |
1723 | ||
1724 | /** | |
1725 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
1726 | * @adapter: board private structure | |
1727 | * | |
1728 | * Returns 0 on success, negative on failure | |
1729 | **/ | |
1730 | int e1000e_setup_rx_resources(struct e1000_adapter *adapter) | |
1731 | { | |
1732 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 AK |
1733 | struct e1000_buffer *buffer_info; |
1734 | int i, size, desc_len, err = -ENOMEM; | |
bc7f75fa AK |
1735 | |
1736 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1737 | rx_ring->buffer_info = vmalloc(size); | |
1738 | if (!rx_ring->buffer_info) | |
1739 | goto err; | |
1740 | memset(rx_ring->buffer_info, 0, size); | |
1741 | ||
47f44e40 AK |
1742 | for (i = 0; i < rx_ring->count; i++) { |
1743 | buffer_info = &rx_ring->buffer_info[i]; | |
1744 | buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, | |
1745 | sizeof(struct e1000_ps_page), | |
1746 | GFP_KERNEL); | |
1747 | if (!buffer_info->ps_pages) | |
1748 | goto err_pages; | |
1749 | } | |
bc7f75fa AK |
1750 | |
1751 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1752 | ||
1753 | /* Round up to nearest 4K */ | |
1754 | rx_ring->size = rx_ring->count * desc_len; | |
1755 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
1756 | ||
1757 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
1758 | if (err) | |
47f44e40 | 1759 | goto err_pages; |
bc7f75fa AK |
1760 | |
1761 | rx_ring->next_to_clean = 0; | |
1762 | rx_ring->next_to_use = 0; | |
1763 | rx_ring->rx_skb_top = NULL; | |
1764 | ||
1765 | return 0; | |
47f44e40 AK |
1766 | |
1767 | err_pages: | |
1768 | for (i = 0; i < rx_ring->count; i++) { | |
1769 | buffer_info = &rx_ring->buffer_info[i]; | |
1770 | kfree(buffer_info->ps_pages); | |
1771 | } | |
bc7f75fa AK |
1772 | err: |
1773 | vfree(rx_ring->buffer_info); | |
44defeb3 | 1774 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
1775 | return err; |
1776 | } | |
1777 | ||
1778 | /** | |
1779 | * e1000_clean_tx_ring - Free Tx Buffers | |
1780 | * @adapter: board private structure | |
1781 | **/ | |
1782 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
1783 | { | |
1784 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1785 | struct e1000_buffer *buffer_info; | |
1786 | unsigned long size; | |
1787 | unsigned int i; | |
1788 | ||
1789 | for (i = 0; i < tx_ring->count; i++) { | |
1790 | buffer_info = &tx_ring->buffer_info[i]; | |
1791 | e1000_put_txbuf(adapter, buffer_info); | |
1792 | } | |
1793 | ||
1794 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1795 | memset(tx_ring->buffer_info, 0, size); | |
1796 | ||
1797 | memset(tx_ring->desc, 0, tx_ring->size); | |
1798 | ||
1799 | tx_ring->next_to_use = 0; | |
1800 | tx_ring->next_to_clean = 0; | |
1801 | ||
1802 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1803 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1804 | } | |
1805 | ||
1806 | /** | |
1807 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
1808 | * @adapter: board private structure | |
1809 | * | |
1810 | * Free all transmit software resources | |
1811 | **/ | |
1812 | void e1000e_free_tx_resources(struct e1000_adapter *adapter) | |
1813 | { | |
1814 | struct pci_dev *pdev = adapter->pdev; | |
1815 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1816 | ||
1817 | e1000_clean_tx_ring(adapter); | |
1818 | ||
1819 | vfree(tx_ring->buffer_info); | |
1820 | tx_ring->buffer_info = NULL; | |
1821 | ||
1822 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
1823 | tx_ring->dma); | |
1824 | tx_ring->desc = NULL; | |
1825 | } | |
1826 | ||
1827 | /** | |
1828 | * e1000e_free_rx_resources - Free Rx Resources | |
1829 | * @adapter: board private structure | |
1830 | * | |
1831 | * Free all receive software resources | |
1832 | **/ | |
1833 | ||
1834 | void e1000e_free_rx_resources(struct e1000_adapter *adapter) | |
1835 | { | |
1836 | struct pci_dev *pdev = adapter->pdev; | |
1837 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 | 1838 | int i; |
bc7f75fa AK |
1839 | |
1840 | e1000_clean_rx_ring(adapter); | |
1841 | ||
47f44e40 AK |
1842 | for (i = 0; i < rx_ring->count; i++) { |
1843 | kfree(rx_ring->buffer_info[i].ps_pages); | |
1844 | } | |
1845 | ||
bc7f75fa AK |
1846 | vfree(rx_ring->buffer_info); |
1847 | rx_ring->buffer_info = NULL; | |
1848 | ||
bc7f75fa AK |
1849 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
1850 | rx_ring->dma); | |
1851 | rx_ring->desc = NULL; | |
1852 | } | |
1853 | ||
1854 | /** | |
1855 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
489815ce AK |
1856 | * @adapter: pointer to adapter |
1857 | * @itr_setting: current adapter->itr | |
1858 | * @packets: the number of packets during this measurement interval | |
1859 | * @bytes: the number of bytes during this measurement interval | |
1860 | * | |
bc7f75fa AK |
1861 | * Stores a new ITR value based on packets and byte |
1862 | * counts during the last interrupt. The advantage of per interrupt | |
1863 | * computation is faster updates and more accurate ITR for the current | |
1864 | * traffic pattern. Constants in this function were computed | |
1865 | * based on theoretical maximum wire speed and thresholds were set based | |
1866 | * on testing data as well as attempting to minimize response time | |
4662e82b BA |
1867 | * while increasing bulk throughput. This functionality is controlled |
1868 | * by the InterruptThrottleRate module parameter. | |
bc7f75fa AK |
1869 | **/ |
1870 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
1871 | u16 itr_setting, int packets, | |
1872 | int bytes) | |
1873 | { | |
1874 | unsigned int retval = itr_setting; | |
1875 | ||
1876 | if (packets == 0) | |
1877 | goto update_itr_done; | |
1878 | ||
1879 | switch (itr_setting) { | |
1880 | case lowest_latency: | |
1881 | /* handle TSO and jumbo frames */ | |
1882 | if (bytes/packets > 8000) | |
1883 | retval = bulk_latency; | |
1884 | else if ((packets < 5) && (bytes > 512)) { | |
1885 | retval = low_latency; | |
1886 | } | |
1887 | break; | |
1888 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
1889 | if (bytes > 10000) { | |
1890 | /* this if handles the TSO accounting */ | |
1891 | if (bytes/packets > 8000) { | |
1892 | retval = bulk_latency; | |
1893 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
1894 | retval = bulk_latency; | |
1895 | } else if ((packets > 35)) { | |
1896 | retval = lowest_latency; | |
1897 | } | |
1898 | } else if (bytes/packets > 2000) { | |
1899 | retval = bulk_latency; | |
1900 | } else if (packets <= 2 && bytes < 512) { | |
1901 | retval = lowest_latency; | |
1902 | } | |
1903 | break; | |
1904 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
1905 | if (bytes > 25000) { | |
1906 | if (packets > 35) { | |
1907 | retval = low_latency; | |
1908 | } | |
1909 | } else if (bytes < 6000) { | |
1910 | retval = low_latency; | |
1911 | } | |
1912 | break; | |
1913 | } | |
1914 | ||
1915 | update_itr_done: | |
1916 | return retval; | |
1917 | } | |
1918 | ||
1919 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
1920 | { | |
1921 | struct e1000_hw *hw = &adapter->hw; | |
1922 | u16 current_itr; | |
1923 | u32 new_itr = adapter->itr; | |
1924 | ||
1925 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
1926 | if (adapter->link_speed != SPEED_1000) { | |
1927 | current_itr = 0; | |
1928 | new_itr = 4000; | |
1929 | goto set_itr_now; | |
1930 | } | |
1931 | ||
1932 | adapter->tx_itr = e1000_update_itr(adapter, | |
1933 | adapter->tx_itr, | |
1934 | adapter->total_tx_packets, | |
1935 | adapter->total_tx_bytes); | |
1936 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
1937 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
1938 | adapter->tx_itr = low_latency; | |
1939 | ||
1940 | adapter->rx_itr = e1000_update_itr(adapter, | |
1941 | adapter->rx_itr, | |
1942 | adapter->total_rx_packets, | |
1943 | adapter->total_rx_bytes); | |
1944 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
1945 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
1946 | adapter->rx_itr = low_latency; | |
1947 | ||
1948 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
1949 | ||
1950 | switch (current_itr) { | |
1951 | /* counts and packets in update_itr are dependent on these numbers */ | |
1952 | case lowest_latency: | |
1953 | new_itr = 70000; | |
1954 | break; | |
1955 | case low_latency: | |
1956 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1957 | break; | |
1958 | case bulk_latency: | |
1959 | new_itr = 4000; | |
1960 | break; | |
1961 | default: | |
1962 | break; | |
1963 | } | |
1964 | ||
1965 | set_itr_now: | |
1966 | if (new_itr != adapter->itr) { | |
ad68076e BA |
1967 | /* |
1968 | * this attempts to bias the interrupt rate towards Bulk | |
bc7f75fa | 1969 | * by adding intermediate steps when interrupt rate is |
ad68076e BA |
1970 | * increasing |
1971 | */ | |
bc7f75fa AK |
1972 | new_itr = new_itr > adapter->itr ? |
1973 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
1974 | new_itr; | |
1975 | adapter->itr = new_itr; | |
4662e82b BA |
1976 | adapter->rx_ring->itr_val = new_itr; |
1977 | if (adapter->msix_entries) | |
1978 | adapter->rx_ring->set_itr = 1; | |
1979 | else | |
1980 | ew32(ITR, 1000000000 / (new_itr * 256)); | |
bc7f75fa AK |
1981 | } |
1982 | } | |
1983 | ||
4662e82b BA |
1984 | /** |
1985 | * e1000_alloc_queues - Allocate memory for all rings | |
1986 | * @adapter: board private structure to initialize | |
1987 | **/ | |
1988 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) | |
1989 | { | |
1990 | adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
1991 | if (!adapter->tx_ring) | |
1992 | goto err; | |
1993 | ||
1994 | adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
1995 | if (!adapter->rx_ring) | |
1996 | goto err; | |
1997 | ||
1998 | return 0; | |
1999 | err: | |
2000 | e_err("Unable to allocate memory for queues\n"); | |
2001 | kfree(adapter->rx_ring); | |
2002 | kfree(adapter->tx_ring); | |
2003 | return -ENOMEM; | |
2004 | } | |
2005 | ||
bc7f75fa AK |
2006 | /** |
2007 | * e1000_clean - NAPI Rx polling callback | |
ad68076e | 2008 | * @napi: struct associated with this polling callback |
489815ce | 2009 | * @budget: amount of packets driver is allowed to process this poll |
bc7f75fa AK |
2010 | **/ |
2011 | static int e1000_clean(struct napi_struct *napi, int budget) | |
2012 | { | |
2013 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); | |
4662e82b | 2014 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa | 2015 | struct net_device *poll_dev = adapter->netdev; |
679e8a0f | 2016 | int tx_cleaned = 1, work_done = 0; |
bc7f75fa | 2017 | |
4cf1653a | 2018 | adapter = netdev_priv(poll_dev); |
bc7f75fa | 2019 | |
4662e82b BA |
2020 | if (adapter->msix_entries && |
2021 | !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) | |
2022 | goto clean_rx; | |
2023 | ||
92af3e95 | 2024 | tx_cleaned = e1000_clean_tx_irq(adapter); |
bc7f75fa | 2025 | |
4662e82b | 2026 | clean_rx: |
bc7f75fa | 2027 | adapter->clean_rx(adapter, &work_done, budget); |
d2c7ddd6 | 2028 | |
12d04a3c | 2029 | if (!tx_cleaned) |
d2c7ddd6 | 2030 | work_done = budget; |
bc7f75fa | 2031 | |
53e52c72 DM |
2032 | /* If budget not fully consumed, exit the polling mode */ |
2033 | if (work_done < budget) { | |
bc7f75fa AK |
2034 | if (adapter->itr_setting & 3) |
2035 | e1000_set_itr(adapter); | |
288379f0 | 2036 | napi_complete(napi); |
a3c69fef JB |
2037 | if (!test_bit(__E1000_DOWN, &adapter->state)) { |
2038 | if (adapter->msix_entries) | |
2039 | ew32(IMS, adapter->rx_ring->ims_val); | |
2040 | else | |
2041 | e1000_irq_enable(adapter); | |
2042 | } | |
bc7f75fa AK |
2043 | } |
2044 | ||
2045 | return work_done; | |
2046 | } | |
2047 | ||
2048 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
2049 | { | |
2050 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2051 | struct e1000_hw *hw = &adapter->hw; | |
2052 | u32 vfta, index; | |
2053 | ||
2054 | /* don't update vlan cookie if already programmed */ | |
2055 | if ((adapter->hw.mng_cookie.status & | |
2056 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2057 | (vid == adapter->mng_vlan_id)) | |
2058 | return; | |
caaddaf8 | 2059 | |
bc7f75fa | 2060 | /* add VID to filter table */ |
caaddaf8 BA |
2061 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2062 | index = (vid >> 5) & 0x7F; | |
2063 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2064 | vfta |= (1 << (vid & 0x1F)); | |
2065 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2066 | } | |
bc7f75fa AK |
2067 | } |
2068 | ||
2069 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
2070 | { | |
2071 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2072 | struct e1000_hw *hw = &adapter->hw; | |
2073 | u32 vfta, index; | |
2074 | ||
74ef9c39 JB |
2075 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2076 | e1000_irq_disable(adapter); | |
bc7f75fa | 2077 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
74ef9c39 JB |
2078 | |
2079 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
2080 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2081 | |
2082 | if ((adapter->hw.mng_cookie.status & | |
2083 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2084 | (vid == adapter->mng_vlan_id)) { | |
2085 | /* release control to f/w */ | |
2086 | e1000_release_hw_control(adapter); | |
2087 | return; | |
2088 | } | |
2089 | ||
2090 | /* remove VID from filter table */ | |
caaddaf8 BA |
2091 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2092 | index = (vid >> 5) & 0x7F; | |
2093 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2094 | vfta &= ~(1 << (vid & 0x1F)); | |
2095 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2096 | } | |
bc7f75fa AK |
2097 | } |
2098 | ||
2099 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
2100 | { | |
2101 | struct net_device *netdev = adapter->netdev; | |
2102 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
2103 | u16 old_vid = adapter->mng_vlan_id; | |
2104 | ||
2105 | if (!adapter->vlgrp) | |
2106 | return; | |
2107 | ||
2108 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
2109 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2110 | if (adapter->hw.mng_cookie.status & | |
2111 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
2112 | e1000_vlan_rx_add_vid(netdev, vid); | |
2113 | adapter->mng_vlan_id = vid; | |
2114 | } | |
2115 | ||
2116 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
2117 | (vid != old_vid) && | |
2118 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
2119 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
2120 | } else { | |
2121 | adapter->mng_vlan_id = vid; | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | ||
2126 | static void e1000_vlan_rx_register(struct net_device *netdev, | |
2127 | struct vlan_group *grp) | |
2128 | { | |
2129 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2130 | struct e1000_hw *hw = &adapter->hw; | |
2131 | u32 ctrl, rctl; | |
2132 | ||
74ef9c39 JB |
2133 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2134 | e1000_irq_disable(adapter); | |
bc7f75fa AK |
2135 | adapter->vlgrp = grp; |
2136 | ||
2137 | if (grp) { | |
2138 | /* enable VLAN tag insert/strip */ | |
2139 | ctrl = er32(CTRL); | |
2140 | ctrl |= E1000_CTRL_VME; | |
2141 | ew32(CTRL, ctrl); | |
2142 | ||
2143 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
2144 | /* enable VLAN receive filtering */ | |
2145 | rctl = er32(RCTL); | |
bc7f75fa AK |
2146 | rctl &= ~E1000_RCTL_CFIEN; |
2147 | ew32(RCTL, rctl); | |
2148 | e1000_update_mng_vlan(adapter); | |
2149 | } | |
2150 | } else { | |
2151 | /* disable VLAN tag insert/strip */ | |
2152 | ctrl = er32(CTRL); | |
2153 | ctrl &= ~E1000_CTRL_VME; | |
2154 | ew32(CTRL, ctrl); | |
2155 | ||
2156 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
bc7f75fa AK |
2157 | if (adapter->mng_vlan_id != |
2158 | (u16)E1000_MNG_VLAN_NONE) { | |
2159 | e1000_vlan_rx_kill_vid(netdev, | |
2160 | adapter->mng_vlan_id); | |
2161 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2162 | } | |
2163 | } | |
2164 | } | |
2165 | ||
74ef9c39 JB |
2166 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2167 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2168 | } |
2169 | ||
2170 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
2171 | { | |
2172 | u16 vid; | |
2173 | ||
2174 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2175 | ||
2176 | if (!adapter->vlgrp) | |
2177 | return; | |
2178 | ||
2179 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2180 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
2181 | continue; | |
2182 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | static void e1000_init_manageability(struct e1000_adapter *adapter) | |
2187 | { | |
2188 | struct e1000_hw *hw = &adapter->hw; | |
2189 | u32 manc, manc2h; | |
2190 | ||
2191 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
2192 | return; | |
2193 | ||
2194 | manc = er32(MANC); | |
2195 | ||
ad68076e BA |
2196 | /* |
2197 | * enable receiving management packets to the host. this will probably | |
bc7f75fa | 2198 | * generate destination unreachable messages from the host OS, but |
ad68076e BA |
2199 | * the packets will be handled on SMBUS |
2200 | */ | |
bc7f75fa AK |
2201 | manc |= E1000_MANC_EN_MNG2HOST; |
2202 | manc2h = er32(MANC2H); | |
2203 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
2204 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
2205 | manc2h |= E1000_MNG2HOST_PORT_623; | |
2206 | manc2h |= E1000_MNG2HOST_PORT_664; | |
2207 | ew32(MANC2H, manc2h); | |
2208 | ew32(MANC, manc); | |
2209 | } | |
2210 | ||
2211 | /** | |
2212 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
2213 | * @adapter: board private structure | |
2214 | * | |
2215 | * Configure the Tx unit of the MAC after a reset. | |
2216 | **/ | |
2217 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
2218 | { | |
2219 | struct e1000_hw *hw = &adapter->hw; | |
2220 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2221 | u64 tdba; | |
2222 | u32 tdlen, tctl, tipg, tarc; | |
2223 | u32 ipgr1, ipgr2; | |
2224 | ||
2225 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
2226 | tdba = tx_ring->dma; | |
2227 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
284901a9 | 2228 | ew32(TDBAL, (tdba & DMA_BIT_MASK(32))); |
bc7f75fa AK |
2229 | ew32(TDBAH, (tdba >> 32)); |
2230 | ew32(TDLEN, tdlen); | |
2231 | ew32(TDH, 0); | |
2232 | ew32(TDT, 0); | |
2233 | tx_ring->head = E1000_TDH; | |
2234 | tx_ring->tail = E1000_TDT; | |
2235 | ||
2236 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
2237 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ | |
2238 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ | |
2239 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ | |
2240 | ||
2241 | if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) | |
2242 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ | |
2243 | ||
2244 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; | |
2245 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
2246 | ew32(TIPG, tipg); | |
2247 | ||
2248 | /* Set the Tx Interrupt Delay register */ | |
2249 | ew32(TIDV, adapter->tx_int_delay); | |
ad68076e | 2250 | /* Tx irq moderation */ |
bc7f75fa AK |
2251 | ew32(TADV, adapter->tx_abs_int_delay); |
2252 | ||
2253 | /* Program the Transmit Control Register */ | |
2254 | tctl = er32(TCTL); | |
2255 | tctl &= ~E1000_TCTL_CT; | |
2256 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2257 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2258 | ||
2259 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { | |
e9ec2c0f | 2260 | tarc = er32(TARC(0)); |
ad68076e BA |
2261 | /* |
2262 | * set the speed mode bit, we'll clear it if we're not at | |
2263 | * gigabit link later | |
2264 | */ | |
bc7f75fa AK |
2265 | #define SPEED_MODE_BIT (1 << 21) |
2266 | tarc |= SPEED_MODE_BIT; | |
e9ec2c0f | 2267 | ew32(TARC(0), tarc); |
bc7f75fa AK |
2268 | } |
2269 | ||
2270 | /* errata: program both queues to unweighted RR */ | |
2271 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
e9ec2c0f | 2272 | tarc = er32(TARC(0)); |
bc7f75fa | 2273 | tarc |= 1; |
e9ec2c0f JK |
2274 | ew32(TARC(0), tarc); |
2275 | tarc = er32(TARC(1)); | |
bc7f75fa | 2276 | tarc |= 1; |
e9ec2c0f | 2277 | ew32(TARC(1), tarc); |
bc7f75fa AK |
2278 | } |
2279 | ||
bc7f75fa AK |
2280 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
2281 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
2282 | ||
2283 | /* only set IDE if we are delaying interrupts using the timers */ | |
2284 | if (adapter->tx_int_delay) | |
2285 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
2286 | ||
2287 | /* enable Report Status bit */ | |
2288 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
2289 | ||
2290 | ew32(TCTL, tctl); | |
2291 | ||
edfea6e6 SH |
2292 | e1000e_config_collision_dist(hw); |
2293 | ||
bc7f75fa AK |
2294 | adapter->tx_queue_len = adapter->netdev->tx_queue_len; |
2295 | } | |
2296 | ||
2297 | /** | |
2298 | * e1000_setup_rctl - configure the receive control registers | |
2299 | * @adapter: Board private structure | |
2300 | **/ | |
2301 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
2302 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
2303 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
2304 | { | |
2305 | struct e1000_hw *hw = &adapter->hw; | |
2306 | u32 rctl, rfctl; | |
2307 | u32 psrctl = 0; | |
2308 | u32 pages = 0; | |
2309 | ||
2310 | /* Program MC offset vector base */ | |
2311 | rctl = er32(RCTL); | |
2312 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
2313 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
2314 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
2315 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
2316 | ||
2317 | /* Do not Store bad packets */ | |
2318 | rctl &= ~E1000_RCTL_SBP; | |
2319 | ||
2320 | /* Enable Long Packet receive */ | |
2321 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
2322 | rctl &= ~E1000_RCTL_LPE; | |
2323 | else | |
2324 | rctl |= E1000_RCTL_LPE; | |
2325 | ||
eb7c3adb JK |
2326 | /* Some systems expect that the CRC is included in SMBUS traffic. The |
2327 | * hardware strips the CRC before sending to both SMBUS (BMC) and to | |
2328 | * host memory when this is enabled | |
2329 | */ | |
2330 | if (adapter->flags2 & FLAG2_CRC_STRIPPING) | |
2331 | rctl |= E1000_RCTL_SECRC; | |
5918bd88 | 2332 | |
a4f58f54 BA |
2333 | /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
2334 | if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { | |
2335 | u16 phy_data; | |
2336 | ||
2337 | e1e_rphy(hw, PHY_REG(770, 26), &phy_data); | |
2338 | phy_data &= 0xfff8; | |
2339 | phy_data |= (1 << 2); | |
2340 | e1e_wphy(hw, PHY_REG(770, 26), phy_data); | |
2341 | ||
2342 | e1e_rphy(hw, 22, &phy_data); | |
2343 | phy_data &= 0x0fff; | |
2344 | phy_data |= (1 << 14); | |
2345 | e1e_wphy(hw, 0x10, 0x2823); | |
2346 | e1e_wphy(hw, 0x11, 0x0003); | |
2347 | e1e_wphy(hw, 22, phy_data); | |
2348 | } | |
2349 | ||
bc7f75fa AK |
2350 | /* Setup buffer sizes */ |
2351 | rctl &= ~E1000_RCTL_SZ_4096; | |
2352 | rctl |= E1000_RCTL_BSEX; | |
2353 | switch (adapter->rx_buffer_len) { | |
bc7f75fa AK |
2354 | case 2048: |
2355 | default: | |
2356 | rctl |= E1000_RCTL_SZ_2048; | |
2357 | rctl &= ~E1000_RCTL_BSEX; | |
2358 | break; | |
2359 | case 4096: | |
2360 | rctl |= E1000_RCTL_SZ_4096; | |
2361 | break; | |
2362 | case 8192: | |
2363 | rctl |= E1000_RCTL_SZ_8192; | |
2364 | break; | |
2365 | case 16384: | |
2366 | rctl |= E1000_RCTL_SZ_16384; | |
2367 | break; | |
2368 | } | |
2369 | ||
2370 | /* | |
2371 | * 82571 and greater support packet-split where the protocol | |
2372 | * header is placed in skb->data and the packet data is | |
2373 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
2374 | * In the case of a non-split, skb->data is linearly filled, | |
2375 | * followed by the page buffers. Therefore, skb->data is | |
2376 | * sized to hold the largest protocol header. | |
2377 | * | |
2378 | * allocations using alloc_page take too long for regular MTU | |
2379 | * so only enable packet split for jumbo frames | |
2380 | * | |
2381 | * Using pages when the page size is greater than 16k wastes | |
2382 | * a lot of memory, since we allocate 3 pages at all times | |
2383 | * per packet. | |
2384 | */ | |
bc7f75fa | 2385 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
97ac8cae BA |
2386 | if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) && |
2387 | (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) | |
bc7f75fa | 2388 | adapter->rx_ps_pages = pages; |
97ac8cae BA |
2389 | else |
2390 | adapter->rx_ps_pages = 0; | |
bc7f75fa AK |
2391 | |
2392 | if (adapter->rx_ps_pages) { | |
2393 | /* Configure extra packet-split registers */ | |
2394 | rfctl = er32(RFCTL); | |
2395 | rfctl |= E1000_RFCTL_EXTEN; | |
ad68076e BA |
2396 | /* |
2397 | * disable packet split support for IPv6 extension headers, | |
2398 | * because some malformed IPv6 headers can hang the Rx | |
2399 | */ | |
bc7f75fa AK |
2400 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
2401 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
2402 | ||
2403 | ew32(RFCTL, rfctl); | |
2404 | ||
140a7480 AK |
2405 | /* Enable Packet split descriptors */ |
2406 | rctl |= E1000_RCTL_DTYP_PS; | |
bc7f75fa AK |
2407 | |
2408 | psrctl |= adapter->rx_ps_bsize0 >> | |
2409 | E1000_PSRCTL_BSIZE0_SHIFT; | |
2410 | ||
2411 | switch (adapter->rx_ps_pages) { | |
2412 | case 3: | |
2413 | psrctl |= PAGE_SIZE << | |
2414 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2415 | case 2: | |
2416 | psrctl |= PAGE_SIZE << | |
2417 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2418 | case 1: | |
2419 | psrctl |= PAGE_SIZE >> | |
2420 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2421 | break; | |
2422 | } | |
2423 | ||
2424 | ew32(PSRCTL, psrctl); | |
2425 | } | |
2426 | ||
2427 | ew32(RCTL, rctl); | |
318a94d6 JK |
2428 | /* just started the receive unit, no need to restart */ |
2429 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
bc7f75fa AK |
2430 | } |
2431 | ||
2432 | /** | |
2433 | * e1000_configure_rx - Configure Receive Unit after Reset | |
2434 | * @adapter: board private structure | |
2435 | * | |
2436 | * Configure the Rx unit of the MAC after a reset. | |
2437 | **/ | |
2438 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
2439 | { | |
2440 | struct e1000_hw *hw = &adapter->hw; | |
2441 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
2442 | u64 rdba; | |
2443 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
2444 | ||
2445 | if (adapter->rx_ps_pages) { | |
2446 | /* this is a 32 byte descriptor */ | |
2447 | rdlen = rx_ring->count * | |
2448 | sizeof(union e1000_rx_desc_packet_split); | |
2449 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2450 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
97ac8cae BA |
2451 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
2452 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); | |
2453 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
2454 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
bc7f75fa | 2455 | } else { |
97ac8cae | 2456 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); |
bc7f75fa AK |
2457 | adapter->clean_rx = e1000_clean_rx_irq; |
2458 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2459 | } | |
2460 | ||
2461 | /* disable receives while setting up the descriptors */ | |
2462 | rctl = er32(RCTL); | |
2463 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2464 | e1e_flush(); | |
2465 | msleep(10); | |
2466 | ||
2467 | /* set the Receive Delay Timer Register */ | |
2468 | ew32(RDTR, adapter->rx_int_delay); | |
2469 | ||
2470 | /* irq moderation */ | |
2471 | ew32(RADV, adapter->rx_abs_int_delay); | |
2472 | if (adapter->itr_setting != 0) | |
ad68076e | 2473 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
bc7f75fa AK |
2474 | |
2475 | ctrl_ext = er32(CTRL_EXT); | |
bc7f75fa AK |
2476 | /* Auto-Mask interrupts upon ICR access */ |
2477 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
2478 | ew32(IAM, 0xffffffff); | |
2479 | ew32(CTRL_EXT, ctrl_ext); | |
2480 | e1e_flush(); | |
2481 | ||
ad68076e BA |
2482 | /* |
2483 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
2484 | * the Base and Length of the Rx Descriptor Ring | |
2485 | */ | |
bc7f75fa | 2486 | rdba = rx_ring->dma; |
284901a9 | 2487 | ew32(RDBAL, (rdba & DMA_BIT_MASK(32))); |
bc7f75fa AK |
2488 | ew32(RDBAH, (rdba >> 32)); |
2489 | ew32(RDLEN, rdlen); | |
2490 | ew32(RDH, 0); | |
2491 | ew32(RDT, 0); | |
2492 | rx_ring->head = E1000_RDH; | |
2493 | rx_ring->tail = E1000_RDT; | |
2494 | ||
2495 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
2496 | rxcsum = er32(RXCSUM); | |
2497 | if (adapter->flags & FLAG_RX_CSUM_ENABLED) { | |
2498 | rxcsum |= E1000_RXCSUM_TUOFL; | |
2499 | ||
ad68076e BA |
2500 | /* |
2501 | * IPv4 payload checksum for UDP fragments must be | |
2502 | * used in conjunction with packet-split. | |
2503 | */ | |
bc7f75fa AK |
2504 | if (adapter->rx_ps_pages) |
2505 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
2506 | } else { | |
2507 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2508 | /* no need to clear IPPCSE as it defaults to 0 */ | |
2509 | } | |
2510 | ew32(RXCSUM, rxcsum); | |
2511 | ||
ad68076e BA |
2512 | /* |
2513 | * Enable early receives on supported devices, only takes effect when | |
bc7f75fa | 2514 | * packet size is equal or larger than the specified value (in 8 byte |
ad68076e BA |
2515 | * units), e.g. using jumbo frames when setting to E1000_ERT_2048 |
2516 | */ | |
53ec5498 BA |
2517 | if (adapter->flags & FLAG_HAS_ERT) { |
2518 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
2519 | u32 rxdctl = er32(RXDCTL(0)); | |
2520 | ew32(RXDCTL(0), rxdctl | 0x3); | |
2521 | ew32(ERT, E1000_ERT_2048 | (1 << 13)); | |
2522 | /* | |
2523 | * With jumbo frames and early-receive enabled, | |
2524 | * excessive C-state transition latencies result in | |
2525 | * dropped transactions. | |
2526 | */ | |
2527 | pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, | |
2528 | adapter->netdev->name, 55); | |
2529 | } else { | |
2530 | pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, | |
2531 | adapter->netdev->name, | |
2532 | PM_QOS_DEFAULT_VALUE); | |
2533 | } | |
97ac8cae | 2534 | } |
bc7f75fa AK |
2535 | |
2536 | /* Enable Receives */ | |
2537 | ew32(RCTL, rctl); | |
2538 | } | |
2539 | ||
2540 | /** | |
e2de3eb6 | 2541 | * e1000_update_mc_addr_list - Update Multicast addresses |
bc7f75fa AK |
2542 | * @hw: pointer to the HW structure |
2543 | * @mc_addr_list: array of multicast addresses to program | |
2544 | * @mc_addr_count: number of multicast addresses to program | |
bc7f75fa | 2545 | * |
ab8932f3 | 2546 | * Updates the Multicast Table Array. |
bc7f75fa | 2547 | * The caller must have a packed mc_addr_list of multicast addresses. |
bc7f75fa | 2548 | **/ |
e2de3eb6 | 2549 | static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list, |
ab8932f3 | 2550 | u32 mc_addr_count) |
bc7f75fa | 2551 | { |
ab8932f3 | 2552 | hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count); |
bc7f75fa AK |
2553 | } |
2554 | ||
2555 | /** | |
2556 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2557 | * @netdev: network interface device structure | |
2558 | * | |
2559 | * The set_multi entry point is called whenever the multicast address | |
2560 | * list or the network interface flags are updated. This routine is | |
2561 | * responsible for configuring the hardware for proper multicast, | |
2562 | * promiscuous mode, and all-multi behavior. | |
2563 | **/ | |
2564 | static void e1000_set_multi(struct net_device *netdev) | |
2565 | { | |
2566 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2567 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa AK |
2568 | struct dev_mc_list *mc_ptr; |
2569 | u8 *mta_list; | |
2570 | u32 rctl; | |
2571 | int i; | |
2572 | ||
2573 | /* Check for Promiscuous and All Multicast modes */ | |
2574 | ||
2575 | rctl = er32(RCTL); | |
2576 | ||
2577 | if (netdev->flags & IFF_PROMISC) { | |
2578 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
746b9f02 | 2579 | rctl &= ~E1000_RCTL_VFE; |
bc7f75fa | 2580 | } else { |
746b9f02 PM |
2581 | if (netdev->flags & IFF_ALLMULTI) { |
2582 | rctl |= E1000_RCTL_MPE; | |
2583 | rctl &= ~E1000_RCTL_UPE; | |
2584 | } else { | |
2585 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2586 | } | |
78ed11a5 | 2587 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
746b9f02 | 2588 | rctl |= E1000_RCTL_VFE; |
bc7f75fa AK |
2589 | } |
2590 | ||
2591 | ew32(RCTL, rctl); | |
2592 | ||
7aeef972 JP |
2593 | if (!netdev_mc_empty(netdev)) { |
2594 | mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); | |
bc7f75fa AK |
2595 | if (!mta_list) |
2596 | return; | |
2597 | ||
2598 | /* prepare a packed array of only addresses. */ | |
7aeef972 JP |
2599 | i = 0; |
2600 | netdev_for_each_mc_addr(mc_ptr, netdev) | |
2601 | memcpy(mta_list + (i++ * ETH_ALEN), | |
2602 | mc_ptr->dmi_addr, ETH_ALEN); | |
bc7f75fa | 2603 | |
ab8932f3 | 2604 | e1000_update_mc_addr_list(hw, mta_list, i); |
bc7f75fa AK |
2605 | kfree(mta_list); |
2606 | } else { | |
2607 | /* | |
2608 | * if we're called from probe, we might not have | |
2609 | * anything to do here, so clear out the list | |
2610 | */ | |
ab8932f3 | 2611 | e1000_update_mc_addr_list(hw, NULL, 0); |
bc7f75fa AK |
2612 | } |
2613 | } | |
2614 | ||
2615 | /** | |
ad68076e | 2616 | * e1000_configure - configure the hardware for Rx and Tx |
bc7f75fa AK |
2617 | * @adapter: private board structure |
2618 | **/ | |
2619 | static void e1000_configure(struct e1000_adapter *adapter) | |
2620 | { | |
2621 | e1000_set_multi(adapter->netdev); | |
2622 | ||
2623 | e1000_restore_vlan(adapter); | |
2624 | e1000_init_manageability(adapter); | |
2625 | ||
2626 | e1000_configure_tx(adapter); | |
2627 | e1000_setup_rctl(adapter); | |
2628 | e1000_configure_rx(adapter); | |
ad68076e | 2629 | adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring)); |
bc7f75fa AK |
2630 | } |
2631 | ||
2632 | /** | |
2633 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
2634 | * @adapter: address of board private structure | |
2635 | * | |
2636 | * The phy may be powered down to save power and turn off link when the | |
2637 | * driver is unloaded and wake on lan is not enabled (among others) | |
2638 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
2639 | **/ | |
2640 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
2641 | { | |
17f208de BA |
2642 | if (adapter->hw.phy.ops.power_up) |
2643 | adapter->hw.phy.ops.power_up(&adapter->hw); | |
bc7f75fa AK |
2644 | |
2645 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
2646 | } | |
2647 | ||
2648 | /** | |
2649 | * e1000_power_down_phy - Power down the PHY | |
2650 | * | |
17f208de BA |
2651 | * Power down the PHY so no link is implied when interface is down. |
2652 | * The PHY cannot be powered down if management or WoL is active. | |
bc7f75fa AK |
2653 | */ |
2654 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
2655 | { | |
bc7f75fa | 2656 | /* WoL is enabled */ |
23b66e2b | 2657 | if (adapter->wol) |
bc7f75fa AK |
2658 | return; |
2659 | ||
17f208de BA |
2660 | if (adapter->hw.phy.ops.power_down) |
2661 | adapter->hw.phy.ops.power_down(&adapter->hw); | |
bc7f75fa AK |
2662 | } |
2663 | ||
2664 | /** | |
2665 | * e1000e_reset - bring the hardware into a known good state | |
2666 | * | |
2667 | * This function boots the hardware and enables some settings that | |
2668 | * require a configuration cycle of the hardware - those cannot be | |
2669 | * set/changed during runtime. After reset the device needs to be | |
ad68076e | 2670 | * properly configured for Rx, Tx etc. |
bc7f75fa AK |
2671 | */ |
2672 | void e1000e_reset(struct e1000_adapter *adapter) | |
2673 | { | |
2674 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
318a94d6 | 2675 | struct e1000_fc_info *fc = &adapter->hw.fc; |
bc7f75fa AK |
2676 | struct e1000_hw *hw = &adapter->hw; |
2677 | u32 tx_space, min_tx_space, min_rx_space; | |
318a94d6 | 2678 | u32 pba = adapter->pba; |
bc7f75fa AK |
2679 | u16 hwm; |
2680 | ||
ad68076e | 2681 | /* reset Packet Buffer Allocation to default */ |
318a94d6 | 2682 | ew32(PBA, pba); |
df762464 | 2683 | |
318a94d6 | 2684 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
ad68076e BA |
2685 | /* |
2686 | * To maintain wire speed transmits, the Tx FIFO should be | |
bc7f75fa AK |
2687 | * large enough to accommodate two full transmit packets, |
2688 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
2689 | * the Rx FIFO should be large enough to accommodate at least | |
2690 | * one full receive packet and is similarly rounded up and | |
ad68076e BA |
2691 | * expressed in KB. |
2692 | */ | |
df762464 | 2693 | pba = er32(PBA); |
bc7f75fa | 2694 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
df762464 | 2695 | tx_space = pba >> 16; |
bc7f75fa | 2696 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
df762464 | 2697 | pba &= 0xffff; |
ad68076e BA |
2698 | /* |
2699 | * the Tx fifo also stores 16 bytes of information about the tx | |
2700 | * but don't include ethernet FCS because hardware appends it | |
318a94d6 JK |
2701 | */ |
2702 | min_tx_space = (adapter->max_frame_size + | |
bc7f75fa AK |
2703 | sizeof(struct e1000_tx_desc) - |
2704 | ETH_FCS_LEN) * 2; | |
2705 | min_tx_space = ALIGN(min_tx_space, 1024); | |
2706 | min_tx_space >>= 10; | |
2707 | /* software strips receive CRC, so leave room for it */ | |
318a94d6 | 2708 | min_rx_space = adapter->max_frame_size; |
bc7f75fa AK |
2709 | min_rx_space = ALIGN(min_rx_space, 1024); |
2710 | min_rx_space >>= 10; | |
2711 | ||
ad68076e BA |
2712 | /* |
2713 | * If current Tx allocation is less than the min Tx FIFO size, | |
bc7f75fa | 2714 | * and the min Tx FIFO size is less than the current Rx FIFO |
ad68076e BA |
2715 | * allocation, take space away from current Rx allocation |
2716 | */ | |
df762464 AK |
2717 | if ((tx_space < min_tx_space) && |
2718 | ((min_tx_space - tx_space) < pba)) { | |
2719 | pba -= min_tx_space - tx_space; | |
bc7f75fa | 2720 | |
ad68076e BA |
2721 | /* |
2722 | * if short on Rx space, Rx wins and must trump tx | |
2723 | * adjustment or use Early Receive if available | |
2724 | */ | |
df762464 | 2725 | if ((pba < min_rx_space) && |
bc7f75fa AK |
2726 | (!(adapter->flags & FLAG_HAS_ERT))) |
2727 | /* ERT enabled in e1000_configure_rx */ | |
df762464 | 2728 | pba = min_rx_space; |
bc7f75fa | 2729 | } |
df762464 AK |
2730 | |
2731 | ew32(PBA, pba); | |
bc7f75fa AK |
2732 | } |
2733 | ||
bc7f75fa | 2734 | |
ad68076e BA |
2735 | /* |
2736 | * flow control settings | |
2737 | * | |
38eb394e | 2738 | * The high water mark must be low enough to fit one full frame |
bc7f75fa AK |
2739 | * (or the size used for early receive) above it in the Rx FIFO. |
2740 | * Set it to the lower of: | |
2741 | * - 90% of the Rx FIFO size, and | |
2742 | * - the full Rx FIFO size minus the early receive size (for parts | |
2743 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
38eb394e | 2744 | * - the full Rx FIFO size minus one full frame |
ad68076e | 2745 | */ |
38eb394e BA |
2746 | if (hw->mac.type == e1000_pchlan) { |
2747 | /* | |
2748 | * Workaround PCH LOM adapter hangs with certain network | |
2749 | * loads. If hangs persist, try disabling Tx flow control. | |
2750 | */ | |
2751 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
2752 | fc->high_water = 0x3500; | |
2753 | fc->low_water = 0x1500; | |
2754 | } else { | |
2755 | fc->high_water = 0x5000; | |
2756 | fc->low_water = 0x3000; | |
2757 | } | |
2758 | } else { | |
2759 | if ((adapter->flags & FLAG_HAS_ERT) && | |
2760 | (adapter->netdev->mtu > ETH_DATA_LEN)) | |
2761 | hwm = min(((pba << 10) * 9 / 10), | |
2762 | ((pba << 10) - (E1000_ERT_2048 << 3))); | |
2763 | else | |
2764 | hwm = min(((pba << 10) * 9 / 10), | |
2765 | ((pba << 10) - adapter->max_frame_size)); | |
bc7f75fa | 2766 | |
38eb394e BA |
2767 | fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
2768 | fc->low_water = fc->high_water - 8; | |
2769 | } | |
bc7f75fa AK |
2770 | |
2771 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) | |
318a94d6 | 2772 | fc->pause_time = 0xFFFF; |
bc7f75fa | 2773 | else |
318a94d6 JK |
2774 | fc->pause_time = E1000_FC_PAUSE_TIME; |
2775 | fc->send_xon = 1; | |
5c48ef3e | 2776 | fc->current_mode = fc->requested_mode; |
bc7f75fa AK |
2777 | |
2778 | /* Allow time for pending master requests to run */ | |
2779 | mac->ops.reset_hw(hw); | |
97ac8cae BA |
2780 | |
2781 | /* | |
2782 | * For parts with AMT enabled, let the firmware know | |
2783 | * that the network interface is in control | |
2784 | */ | |
c43bc57e | 2785 | if (adapter->flags & FLAG_HAS_AMT) |
97ac8cae BA |
2786 | e1000_get_hw_control(adapter); |
2787 | ||
bc7f75fa | 2788 | ew32(WUC, 0); |
a4f58f54 BA |
2789 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) |
2790 | e1e_wphy(&adapter->hw, BM_WUC, 0); | |
bc7f75fa AK |
2791 | |
2792 | if (mac->ops.init_hw(hw)) | |
44defeb3 | 2793 | e_err("Hardware Error\n"); |
bc7f75fa | 2794 | |
38eb394e BA |
2795 | /* additional part of the flow-control workaround above */ |
2796 | if (hw->mac.type == e1000_pchlan) | |
2797 | ew32(FCRTV_PCH, 0x1000); | |
2798 | ||
bc7f75fa AK |
2799 | e1000_update_mng_vlan(adapter); |
2800 | ||
2801 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
2802 | ew32(VET, ETH_P_8021Q); | |
2803 | ||
2804 | e1000e_reset_adaptive(hw); | |
2805 | e1000_get_phy_info(hw); | |
2806 | ||
918d7197 BA |
2807 | if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
2808 | !(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
bc7f75fa | 2809 | u16 phy_data = 0; |
ad68076e BA |
2810 | /* |
2811 | * speed up time to link by disabling smart power down, ignore | |
bc7f75fa | 2812 | * the return value of this function because there is nothing |
ad68076e BA |
2813 | * different we would do if it failed |
2814 | */ | |
bc7f75fa AK |
2815 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
2816 | phy_data &= ~IGP02E1000_PM_SPD; | |
2817 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
2818 | } | |
bc7f75fa AK |
2819 | } |
2820 | ||
2821 | int e1000e_up(struct e1000_adapter *adapter) | |
2822 | { | |
2823 | struct e1000_hw *hw = &adapter->hw; | |
2824 | ||
53ec5498 BA |
2825 | /* DMA latency requirement to workaround early-receive/jumbo issue */ |
2826 | if (adapter->flags & FLAG_HAS_ERT) | |
2827 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, | |
2828 | adapter->netdev->name, | |
2829 | PM_QOS_DEFAULT_VALUE); | |
2830 | ||
bc7f75fa AK |
2831 | /* hardware has been reset, we need to reload some things */ |
2832 | e1000_configure(adapter); | |
2833 | ||
2834 | clear_bit(__E1000_DOWN, &adapter->state); | |
2835 | ||
2836 | napi_enable(&adapter->napi); | |
4662e82b BA |
2837 | if (adapter->msix_entries) |
2838 | e1000_configure_msix(adapter); | |
bc7f75fa AK |
2839 | e1000_irq_enable(adapter); |
2840 | ||
4cb9be7a JB |
2841 | netif_wake_queue(adapter->netdev); |
2842 | ||
bc7f75fa AK |
2843 | /* fire a link change interrupt to start the watchdog */ |
2844 | ew32(ICS, E1000_ICS_LSC); | |
2845 | return 0; | |
2846 | } | |
2847 | ||
2848 | void e1000e_down(struct e1000_adapter *adapter) | |
2849 | { | |
2850 | struct net_device *netdev = adapter->netdev; | |
2851 | struct e1000_hw *hw = &adapter->hw; | |
2852 | u32 tctl, rctl; | |
2853 | ||
ad68076e BA |
2854 | /* |
2855 | * signal that we're down so the interrupt handler does not | |
2856 | * reschedule our watchdog timer | |
2857 | */ | |
bc7f75fa AK |
2858 | set_bit(__E1000_DOWN, &adapter->state); |
2859 | ||
2860 | /* disable receives in the hardware */ | |
2861 | rctl = er32(RCTL); | |
2862 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2863 | /* flush and sleep below */ | |
2864 | ||
4cb9be7a | 2865 | netif_stop_queue(netdev); |
bc7f75fa AK |
2866 | |
2867 | /* disable transmits in the hardware */ | |
2868 | tctl = er32(TCTL); | |
2869 | tctl &= ~E1000_TCTL_EN; | |
2870 | ew32(TCTL, tctl); | |
2871 | /* flush both disables and wait for them to finish */ | |
2872 | e1e_flush(); | |
2873 | msleep(10); | |
2874 | ||
2875 | napi_disable(&adapter->napi); | |
2876 | e1000_irq_disable(adapter); | |
2877 | ||
2878 | del_timer_sync(&adapter->watchdog_timer); | |
2879 | del_timer_sync(&adapter->phy_info_timer); | |
2880 | ||
2881 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2882 | netif_carrier_off(netdev); | |
2883 | adapter->link_speed = 0; | |
2884 | adapter->link_duplex = 0; | |
2885 | ||
52cc3086 JK |
2886 | if (!pci_channel_offline(adapter->pdev)) |
2887 | e1000e_reset(adapter); | |
bc7f75fa AK |
2888 | e1000_clean_tx_ring(adapter); |
2889 | e1000_clean_rx_ring(adapter); | |
2890 | ||
53ec5498 BA |
2891 | if (adapter->flags & FLAG_HAS_ERT) |
2892 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, | |
2893 | adapter->netdev->name); | |
2894 | ||
bc7f75fa AK |
2895 | /* |
2896 | * TODO: for power management, we could drop the link and | |
2897 | * pci_disable_device here. | |
2898 | */ | |
2899 | } | |
2900 | ||
2901 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
2902 | { | |
2903 | might_sleep(); | |
2904 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
2905 | msleep(1); | |
2906 | e1000e_down(adapter); | |
2907 | e1000e_up(adapter); | |
2908 | clear_bit(__E1000_RESETTING, &adapter->state); | |
2909 | } | |
2910 | ||
2911 | /** | |
2912 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
2913 | * @adapter: board private structure to initialize | |
2914 | * | |
2915 | * e1000_sw_init initializes the Adapter private data structure. | |
2916 | * Fields are initialized based on PCI device information and | |
2917 | * OS network device settings (MTU size). | |
2918 | **/ | |
2919 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) | |
2920 | { | |
bc7f75fa AK |
2921 | struct net_device *netdev = adapter->netdev; |
2922 | ||
2923 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
2924 | adapter->rx_ps_bsize0 = 128; | |
318a94d6 JK |
2925 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
2926 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
bc7f75fa | 2927 | |
4662e82b | 2928 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa | 2929 | |
4662e82b BA |
2930 | if (e1000_alloc_queues(adapter)) |
2931 | return -ENOMEM; | |
bc7f75fa | 2932 | |
bc7f75fa | 2933 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
bc7f75fa AK |
2934 | e1000_irq_disable(adapter); |
2935 | ||
bc7f75fa AK |
2936 | set_bit(__E1000_DOWN, &adapter->state); |
2937 | return 0; | |
bc7f75fa AK |
2938 | } |
2939 | ||
f8d59f78 BA |
2940 | /** |
2941 | * e1000_intr_msi_test - Interrupt Handler | |
2942 | * @irq: interrupt number | |
2943 | * @data: pointer to a network interface device structure | |
2944 | **/ | |
2945 | static irqreturn_t e1000_intr_msi_test(int irq, void *data) | |
2946 | { | |
2947 | struct net_device *netdev = data; | |
2948 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2949 | struct e1000_hw *hw = &adapter->hw; | |
2950 | u32 icr = er32(ICR); | |
2951 | ||
3bb99fe2 | 2952 | e_dbg("icr is %08X\n", icr); |
f8d59f78 BA |
2953 | if (icr & E1000_ICR_RXSEQ) { |
2954 | adapter->flags &= ~FLAG_MSI_TEST_FAILED; | |
2955 | wmb(); | |
2956 | } | |
2957 | ||
2958 | return IRQ_HANDLED; | |
2959 | } | |
2960 | ||
2961 | /** | |
2962 | * e1000_test_msi_interrupt - Returns 0 for successful test | |
2963 | * @adapter: board private struct | |
2964 | * | |
2965 | * code flow taken from tg3.c | |
2966 | **/ | |
2967 | static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) | |
2968 | { | |
2969 | struct net_device *netdev = adapter->netdev; | |
2970 | struct e1000_hw *hw = &adapter->hw; | |
2971 | int err; | |
2972 | ||
2973 | /* poll_enable hasn't been called yet, so don't need disable */ | |
2974 | /* clear any pending events */ | |
2975 | er32(ICR); | |
2976 | ||
2977 | /* free the real vector and request a test handler */ | |
2978 | e1000_free_irq(adapter); | |
4662e82b | 2979 | e1000e_reset_interrupt_capability(adapter); |
f8d59f78 BA |
2980 | |
2981 | /* Assume that the test fails, if it succeeds then the test | |
2982 | * MSI irq handler will unset this flag */ | |
2983 | adapter->flags |= FLAG_MSI_TEST_FAILED; | |
2984 | ||
2985 | err = pci_enable_msi(adapter->pdev); | |
2986 | if (err) | |
2987 | goto msi_test_failed; | |
2988 | ||
a0607fd3 | 2989 | err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
f8d59f78 BA |
2990 | netdev->name, netdev); |
2991 | if (err) { | |
2992 | pci_disable_msi(adapter->pdev); | |
2993 | goto msi_test_failed; | |
2994 | } | |
2995 | ||
2996 | wmb(); | |
2997 | ||
2998 | e1000_irq_enable(adapter); | |
2999 | ||
3000 | /* fire an unusual interrupt on the test handler */ | |
3001 | ew32(ICS, E1000_ICS_RXSEQ); | |
3002 | e1e_flush(); | |
3003 | msleep(50); | |
3004 | ||
3005 | e1000_irq_disable(adapter); | |
3006 | ||
3007 | rmb(); | |
3008 | ||
3009 | if (adapter->flags & FLAG_MSI_TEST_FAILED) { | |
4662e82b | 3010 | adapter->int_mode = E1000E_INT_MODE_LEGACY; |
f8d59f78 BA |
3011 | err = -EIO; |
3012 | e_info("MSI interrupt test failed!\n"); | |
3013 | } | |
3014 | ||
3015 | free_irq(adapter->pdev->irq, netdev); | |
3016 | pci_disable_msi(adapter->pdev); | |
3017 | ||
3018 | if (err == -EIO) | |
3019 | goto msi_test_failed; | |
3020 | ||
3021 | /* okay so the test worked, restore settings */ | |
3bb99fe2 | 3022 | e_dbg("MSI interrupt test succeeded!\n"); |
f8d59f78 | 3023 | msi_test_failed: |
4662e82b | 3024 | e1000e_set_interrupt_capability(adapter); |
f8d59f78 BA |
3025 | e1000_request_irq(adapter); |
3026 | return err; | |
3027 | } | |
3028 | ||
3029 | /** | |
3030 | * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored | |
3031 | * @adapter: board private struct | |
3032 | * | |
3033 | * code flow taken from tg3.c, called with e1000 interrupts disabled. | |
3034 | **/ | |
3035 | static int e1000_test_msi(struct e1000_adapter *adapter) | |
3036 | { | |
3037 | int err; | |
3038 | u16 pci_cmd; | |
3039 | ||
3040 | if (!(adapter->flags & FLAG_MSI_ENABLED)) | |
3041 | return 0; | |
3042 | ||
3043 | /* disable SERR in case the MSI write causes a master abort */ | |
3044 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
3045 | pci_write_config_word(adapter->pdev, PCI_COMMAND, | |
3046 | pci_cmd & ~PCI_COMMAND_SERR); | |
3047 | ||
3048 | err = e1000_test_msi_interrupt(adapter); | |
3049 | ||
3050 | /* restore previous setting of command word */ | |
3051 | pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); | |
3052 | ||
3053 | /* success ! */ | |
3054 | if (!err) | |
3055 | return 0; | |
3056 | ||
3057 | /* EIO means MSI test failed */ | |
3058 | if (err != -EIO) | |
3059 | return err; | |
3060 | ||
3061 | /* back to INTx mode */ | |
3062 | e_warn("MSI interrupt test failed, using legacy interrupt.\n"); | |
3063 | ||
3064 | e1000_free_irq(adapter); | |
3065 | ||
3066 | err = e1000_request_irq(adapter); | |
3067 | ||
3068 | return err; | |
3069 | } | |
3070 | ||
bc7f75fa AK |
3071 | /** |
3072 | * e1000_open - Called when a network interface is made active | |
3073 | * @netdev: network interface device structure | |
3074 | * | |
3075 | * Returns 0 on success, negative value on failure | |
3076 | * | |
3077 | * The open entry point is called when a network interface is made | |
3078 | * active by the system (IFF_UP). At this point all resources needed | |
3079 | * for transmit and receive operations are allocated, the interrupt | |
3080 | * handler is registered with the OS, the watchdog timer is started, | |
3081 | * and the stack is notified that the interface is ready. | |
3082 | **/ | |
3083 | static int e1000_open(struct net_device *netdev) | |
3084 | { | |
3085 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3086 | struct e1000_hw *hw = &adapter->hw; | |
23606cf5 | 3087 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
3088 | int err; |
3089 | ||
3090 | /* disallow open during test */ | |
3091 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
3092 | return -EBUSY; | |
3093 | ||
23606cf5 RW |
3094 | pm_runtime_get_sync(&pdev->dev); |
3095 | ||
9c563d20 JB |
3096 | netif_carrier_off(netdev); |
3097 | ||
bc7f75fa AK |
3098 | /* allocate transmit descriptors */ |
3099 | err = e1000e_setup_tx_resources(adapter); | |
3100 | if (err) | |
3101 | goto err_setup_tx; | |
3102 | ||
3103 | /* allocate receive descriptors */ | |
3104 | err = e1000e_setup_rx_resources(adapter); | |
3105 | if (err) | |
3106 | goto err_setup_rx; | |
3107 | ||
3108 | e1000e_power_up_phy(adapter); | |
3109 | ||
3110 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
3111 | if ((adapter->hw.mng_cookie.status & | |
3112 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
3113 | e1000_update_mng_vlan(adapter); | |
3114 | ||
ad68076e BA |
3115 | /* |
3116 | * If AMT is enabled, let the firmware know that the network | |
3117 | * interface is now open | |
3118 | */ | |
c43bc57e | 3119 | if (adapter->flags & FLAG_HAS_AMT) |
bc7f75fa AK |
3120 | e1000_get_hw_control(adapter); |
3121 | ||
ad68076e BA |
3122 | /* |
3123 | * before we allocate an interrupt, we must be ready to handle it. | |
bc7f75fa AK |
3124 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
3125 | * as soon as we call pci_request_irq, so we have to setup our | |
ad68076e BA |
3126 | * clean_rx handler before we do so. |
3127 | */ | |
bc7f75fa AK |
3128 | e1000_configure(adapter); |
3129 | ||
3130 | err = e1000_request_irq(adapter); | |
3131 | if (err) | |
3132 | goto err_req_irq; | |
3133 | ||
f8d59f78 BA |
3134 | /* |
3135 | * Work around PCIe errata with MSI interrupts causing some chipsets to | |
3136 | * ignore e1000e MSI messages, which means we need to test our MSI | |
3137 | * interrupt now | |
3138 | */ | |
4662e82b | 3139 | if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
f8d59f78 BA |
3140 | err = e1000_test_msi(adapter); |
3141 | if (err) { | |
3142 | e_err("Interrupt allocation failed\n"); | |
3143 | goto err_req_irq; | |
3144 | } | |
3145 | } | |
3146 | ||
bc7f75fa AK |
3147 | /* From here on the code is the same as e1000e_up() */ |
3148 | clear_bit(__E1000_DOWN, &adapter->state); | |
3149 | ||
3150 | napi_enable(&adapter->napi); | |
3151 | ||
3152 | e1000_irq_enable(adapter); | |
3153 | ||
4cb9be7a | 3154 | netif_start_queue(netdev); |
d55b53ff | 3155 | |
23606cf5 RW |
3156 | adapter->idle_check = true; |
3157 | pm_runtime_put(&pdev->dev); | |
3158 | ||
bc7f75fa AK |
3159 | /* fire a link status change interrupt to start the watchdog */ |
3160 | ew32(ICS, E1000_ICS_LSC); | |
3161 | ||
3162 | return 0; | |
3163 | ||
3164 | err_req_irq: | |
3165 | e1000_release_hw_control(adapter); | |
3166 | e1000_power_down_phy(adapter); | |
3167 | e1000e_free_rx_resources(adapter); | |
3168 | err_setup_rx: | |
3169 | e1000e_free_tx_resources(adapter); | |
3170 | err_setup_tx: | |
3171 | e1000e_reset(adapter); | |
23606cf5 | 3172 | pm_runtime_put_sync(&pdev->dev); |
bc7f75fa AK |
3173 | |
3174 | return err; | |
3175 | } | |
3176 | ||
3177 | /** | |
3178 | * e1000_close - Disables a network interface | |
3179 | * @netdev: network interface device structure | |
3180 | * | |
3181 | * Returns 0, this is not allowed to fail | |
3182 | * | |
3183 | * The close entry point is called when an interface is de-activated | |
3184 | * by the OS. The hardware is still under the drivers control, but | |
3185 | * needs to be disabled. A global MAC reset is issued to stop the | |
3186 | * hardware, and all transmit and receive resources are freed. | |
3187 | **/ | |
3188 | static int e1000_close(struct net_device *netdev) | |
3189 | { | |
3190 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 | 3191 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
3192 | |
3193 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
23606cf5 RW |
3194 | |
3195 | pm_runtime_get_sync(&pdev->dev); | |
3196 | ||
3197 | if (!test_bit(__E1000_DOWN, &adapter->state)) { | |
3198 | e1000e_down(adapter); | |
3199 | e1000_free_irq(adapter); | |
3200 | } | |
bc7f75fa | 3201 | e1000_power_down_phy(adapter); |
bc7f75fa AK |
3202 | |
3203 | e1000e_free_tx_resources(adapter); | |
3204 | e1000e_free_rx_resources(adapter); | |
3205 | ||
ad68076e BA |
3206 | /* |
3207 | * kill manageability vlan ID if supported, but not if a vlan with | |
3208 | * the same ID is registered on the host OS (let 8021q kill it) | |
3209 | */ | |
bc7f75fa AK |
3210 | if ((adapter->hw.mng_cookie.status & |
3211 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
3212 | !(adapter->vlgrp && | |
3213 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
3214 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
3215 | ||
ad68076e BA |
3216 | /* |
3217 | * If AMT is enabled, let the firmware know that the network | |
3218 | * interface is now closed | |
3219 | */ | |
c43bc57e | 3220 | if (adapter->flags & FLAG_HAS_AMT) |
bc7f75fa AK |
3221 | e1000_release_hw_control(adapter); |
3222 | ||
23606cf5 RW |
3223 | pm_runtime_put_sync(&pdev->dev); |
3224 | ||
bc7f75fa AK |
3225 | return 0; |
3226 | } | |
3227 | /** | |
3228 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
3229 | * @netdev: network interface device structure | |
3230 | * @p: pointer to an address structure | |
3231 | * | |
3232 | * Returns 0 on success, negative on failure | |
3233 | **/ | |
3234 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
3235 | { | |
3236 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3237 | struct sockaddr *addr = p; | |
3238 | ||
3239 | if (!is_valid_ether_addr(addr->sa_data)) | |
3240 | return -EADDRNOTAVAIL; | |
3241 | ||
3242 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3243 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
3244 | ||
3245 | e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
3246 | ||
3247 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
3248 | /* activate the work around */ | |
3249 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
3250 | ||
ad68076e BA |
3251 | /* |
3252 | * Hold a copy of the LAA in RAR[14] This is done so that | |
bc7f75fa AK |
3253 | * between the time RAR[0] gets clobbered and the time it |
3254 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
3255 | * of the RARs and no incoming packets directed to this port | |
3256 | * are dropped. Eventually the LAA will be in RAR[0] and | |
ad68076e BA |
3257 | * RAR[14] |
3258 | */ | |
bc7f75fa AK |
3259 | e1000e_rar_set(&adapter->hw, |
3260 | adapter->hw.mac.addr, | |
3261 | adapter->hw.mac.rar_entry_count - 1); | |
3262 | } | |
3263 | ||
3264 | return 0; | |
3265 | } | |
3266 | ||
a8f88ff5 JB |
3267 | /** |
3268 | * e1000e_update_phy_task - work thread to update phy | |
3269 | * @work: pointer to our work struct | |
3270 | * | |
3271 | * this worker thread exists because we must acquire a | |
3272 | * semaphore to read the phy, which we could msleep while | |
3273 | * waiting for it, and we can't msleep in a timer. | |
3274 | **/ | |
3275 | static void e1000e_update_phy_task(struct work_struct *work) | |
3276 | { | |
3277 | struct e1000_adapter *adapter = container_of(work, | |
3278 | struct e1000_adapter, update_phy_task); | |
3279 | e1000_get_phy_info(&adapter->hw); | |
3280 | } | |
3281 | ||
ad68076e BA |
3282 | /* |
3283 | * Need to wait a few seconds after link up to get diagnostic information from | |
3284 | * the phy | |
3285 | */ | |
bc7f75fa AK |
3286 | static void e1000_update_phy_info(unsigned long data) |
3287 | { | |
3288 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
a8f88ff5 | 3289 | schedule_work(&adapter->update_phy_task); |
bc7f75fa AK |
3290 | } |
3291 | ||
3292 | /** | |
3293 | * e1000e_update_stats - Update the board statistics counters | |
3294 | * @adapter: board private structure | |
3295 | **/ | |
3296 | void e1000e_update_stats(struct e1000_adapter *adapter) | |
3297 | { | |
7274c20f | 3298 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
3299 | struct e1000_hw *hw = &adapter->hw; |
3300 | struct pci_dev *pdev = adapter->pdev; | |
a4f58f54 | 3301 | u16 phy_data; |
bc7f75fa AK |
3302 | |
3303 | /* | |
3304 | * Prevent stats update while adapter is being reset, or if the pci | |
3305 | * connection is down. | |
3306 | */ | |
3307 | if (adapter->link_speed == 0) | |
3308 | return; | |
3309 | if (pci_channel_offline(pdev)) | |
3310 | return; | |
3311 | ||
bc7f75fa AK |
3312 | adapter->stats.crcerrs += er32(CRCERRS); |
3313 | adapter->stats.gprc += er32(GPRC); | |
7c25769f BA |
3314 | adapter->stats.gorc += er32(GORCL); |
3315 | er32(GORCH); /* Clear gorc */ | |
bc7f75fa AK |
3316 | adapter->stats.bprc += er32(BPRC); |
3317 | adapter->stats.mprc += er32(MPRC); | |
3318 | adapter->stats.roc += er32(ROC); | |
3319 | ||
bc7f75fa | 3320 | adapter->stats.mpc += er32(MPC); |
a4f58f54 BA |
3321 | if ((hw->phy.type == e1000_phy_82578) || |
3322 | (hw->phy.type == e1000_phy_82577)) { | |
3323 | e1e_rphy(hw, HV_SCC_UPPER, &phy_data); | |
29477e24 BA |
3324 | if (!e1e_rphy(hw, HV_SCC_LOWER, &phy_data)) |
3325 | adapter->stats.scc += phy_data; | |
a4f58f54 BA |
3326 | |
3327 | e1e_rphy(hw, HV_ECOL_UPPER, &phy_data); | |
29477e24 BA |
3328 | if (!e1e_rphy(hw, HV_ECOL_LOWER, &phy_data)) |
3329 | adapter->stats.ecol += phy_data; | |
a4f58f54 BA |
3330 | |
3331 | e1e_rphy(hw, HV_MCC_UPPER, &phy_data); | |
29477e24 BA |
3332 | if (!e1e_rphy(hw, HV_MCC_LOWER, &phy_data)) |
3333 | adapter->stats.mcc += phy_data; | |
a4f58f54 BA |
3334 | |
3335 | e1e_rphy(hw, HV_LATECOL_UPPER, &phy_data); | |
29477e24 BA |
3336 | if (!e1e_rphy(hw, HV_LATECOL_LOWER, &phy_data)) |
3337 | adapter->stats.latecol += phy_data; | |
a4f58f54 BA |
3338 | |
3339 | e1e_rphy(hw, HV_DC_UPPER, &phy_data); | |
29477e24 BA |
3340 | if (!e1e_rphy(hw, HV_DC_LOWER, &phy_data)) |
3341 | adapter->stats.dc += phy_data; | |
a4f58f54 BA |
3342 | } else { |
3343 | adapter->stats.scc += er32(SCC); | |
3344 | adapter->stats.ecol += er32(ECOL); | |
3345 | adapter->stats.mcc += er32(MCC); | |
3346 | adapter->stats.latecol += er32(LATECOL); | |
3347 | adapter->stats.dc += er32(DC); | |
3348 | } | |
bc7f75fa AK |
3349 | adapter->stats.xonrxc += er32(XONRXC); |
3350 | adapter->stats.xontxc += er32(XONTXC); | |
3351 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3352 | adapter->stats.xofftxc += er32(XOFFTXC); | |
bc7f75fa | 3353 | adapter->stats.gptc += er32(GPTC); |
7c25769f BA |
3354 | adapter->stats.gotc += er32(GOTCL); |
3355 | er32(GOTCH); /* Clear gotc */ | |
bc7f75fa AK |
3356 | adapter->stats.rnbc += er32(RNBC); |
3357 | adapter->stats.ruc += er32(RUC); | |
bc7f75fa AK |
3358 | |
3359 | adapter->stats.mptc += er32(MPTC); | |
3360 | adapter->stats.bptc += er32(BPTC); | |
3361 | ||
3362 | /* used for adaptive IFS */ | |
3363 | ||
3364 | hw->mac.tx_packet_delta = er32(TPT); | |
3365 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
a4f58f54 BA |
3366 | if ((hw->phy.type == e1000_phy_82578) || |
3367 | (hw->phy.type == e1000_phy_82577)) { | |
3368 | e1e_rphy(hw, HV_COLC_UPPER, &phy_data); | |
29477e24 BA |
3369 | if (!e1e_rphy(hw, HV_COLC_LOWER, &phy_data)) |
3370 | hw->mac.collision_delta = phy_data; | |
a4f58f54 BA |
3371 | } else { |
3372 | hw->mac.collision_delta = er32(COLC); | |
3373 | } | |
bc7f75fa AK |
3374 | adapter->stats.colc += hw->mac.collision_delta; |
3375 | ||
3376 | adapter->stats.algnerrc += er32(ALGNERRC); | |
3377 | adapter->stats.rxerrc += er32(RXERRC); | |
a4f58f54 BA |
3378 | if ((hw->phy.type == e1000_phy_82578) || |
3379 | (hw->phy.type == e1000_phy_82577)) { | |
3380 | e1e_rphy(hw, HV_TNCRS_UPPER, &phy_data); | |
29477e24 BA |
3381 | if (!e1e_rphy(hw, HV_TNCRS_LOWER, &phy_data)) |
3382 | adapter->stats.tncrs += phy_data; | |
a4f58f54 BA |
3383 | } else { |
3384 | if ((hw->mac.type != e1000_82574) && | |
3385 | (hw->mac.type != e1000_82583)) | |
3386 | adapter->stats.tncrs += er32(TNCRS); | |
3387 | } | |
bc7f75fa AK |
3388 | adapter->stats.cexterr += er32(CEXTERR); |
3389 | adapter->stats.tsctc += er32(TSCTC); | |
3390 | adapter->stats.tsctfc += er32(TSCTFC); | |
3391 | ||
bc7f75fa | 3392 | /* Fill out the OS statistics structure */ |
7274c20f AK |
3393 | netdev->stats.multicast = adapter->stats.mprc; |
3394 | netdev->stats.collisions = adapter->stats.colc; | |
bc7f75fa AK |
3395 | |
3396 | /* Rx Errors */ | |
3397 | ||
ad68076e BA |
3398 | /* |
3399 | * RLEC on some newer hardware can be incorrect so build | |
3400 | * our own version based on RUC and ROC | |
3401 | */ | |
7274c20f | 3402 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
bc7f75fa AK |
3403 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
3404 | adapter->stats.ruc + adapter->stats.roc + | |
3405 | adapter->stats.cexterr; | |
7274c20f | 3406 | netdev->stats.rx_length_errors = adapter->stats.ruc + |
bc7f75fa | 3407 | adapter->stats.roc; |
7274c20f AK |
3408 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
3409 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3410 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
bc7f75fa AK |
3411 | |
3412 | /* Tx Errors */ | |
7274c20f | 3413 | netdev->stats.tx_errors = adapter->stats.ecol + |
bc7f75fa | 3414 | adapter->stats.latecol; |
7274c20f AK |
3415 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
3416 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3417 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
bc7f75fa AK |
3418 | |
3419 | /* Tx Dropped needs to be maintained elsewhere */ | |
3420 | ||
bc7f75fa AK |
3421 | /* Management Stats */ |
3422 | adapter->stats.mgptc += er32(MGTPTC); | |
3423 | adapter->stats.mgprc += er32(MGTPRC); | |
3424 | adapter->stats.mgpdc += er32(MGTPDC); | |
bc7f75fa AK |
3425 | } |
3426 | ||
7c25769f BA |
3427 | /** |
3428 | * e1000_phy_read_status - Update the PHY register status snapshot | |
3429 | * @adapter: board private structure | |
3430 | **/ | |
3431 | static void e1000_phy_read_status(struct e1000_adapter *adapter) | |
3432 | { | |
3433 | struct e1000_hw *hw = &adapter->hw; | |
3434 | struct e1000_phy_regs *phy = &adapter->phy_regs; | |
3435 | int ret_val; | |
7c25769f BA |
3436 | |
3437 | if ((er32(STATUS) & E1000_STATUS_LU) && | |
3438 | (adapter->hw.phy.media_type == e1000_media_type_copper)) { | |
3439 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); | |
3440 | ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); | |
3441 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); | |
3442 | ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); | |
3443 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); | |
3444 | ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); | |
3445 | ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); | |
3446 | ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); | |
3447 | if (ret_val) | |
44defeb3 | 3448 | e_warn("Error reading PHY register\n"); |
7c25769f BA |
3449 | } else { |
3450 | /* | |
3451 | * Do not read PHY registers if link is not up | |
3452 | * Set values to typical power-on defaults | |
3453 | */ | |
3454 | phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); | |
3455 | phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | | |
3456 | BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | | |
3457 | BMSR_ERCAP); | |
3458 | phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | | |
3459 | ADVERTISE_ALL | ADVERTISE_CSMA); | |
3460 | phy->lpa = 0; | |
3461 | phy->expansion = EXPANSION_ENABLENPAGE; | |
3462 | phy->ctrl1000 = ADVERTISE_1000FULL; | |
3463 | phy->stat1000 = 0; | |
3464 | phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); | |
3465 | } | |
7c25769f BA |
3466 | } |
3467 | ||
bc7f75fa AK |
3468 | static void e1000_print_link_info(struct e1000_adapter *adapter) |
3469 | { | |
bc7f75fa AK |
3470 | struct e1000_hw *hw = &adapter->hw; |
3471 | u32 ctrl = er32(CTRL); | |
3472 | ||
8f12fe86 BA |
3473 | /* Link status message must follow this format for user tools */ |
3474 | printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, " | |
3475 | "Flow Control: %s\n", | |
3476 | adapter->netdev->name, | |
44defeb3 JK |
3477 | adapter->link_speed, |
3478 | (adapter->link_duplex == FULL_DUPLEX) ? | |
3479 | "Full Duplex" : "Half Duplex", | |
3480 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? | |
3481 | "RX/TX" : | |
3482 | ((ctrl & E1000_CTRL_RFCE) ? "RX" : | |
3483 | ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
bc7f75fa AK |
3484 | } |
3485 | ||
b405e8df | 3486 | bool e1000e_has_link(struct e1000_adapter *adapter) |
318a94d6 JK |
3487 | { |
3488 | struct e1000_hw *hw = &adapter->hw; | |
3489 | bool link_active = 0; | |
3490 | s32 ret_val = 0; | |
3491 | ||
3492 | /* | |
3493 | * get_link_status is set on LSC (link status) interrupt or | |
3494 | * Rx sequence error interrupt. get_link_status will stay | |
3495 | * false until the check_for_link establishes link | |
3496 | * for copper adapters ONLY | |
3497 | */ | |
3498 | switch (hw->phy.media_type) { | |
3499 | case e1000_media_type_copper: | |
3500 | if (hw->mac.get_link_status) { | |
3501 | ret_val = hw->mac.ops.check_for_link(hw); | |
3502 | link_active = !hw->mac.get_link_status; | |
3503 | } else { | |
3504 | link_active = 1; | |
3505 | } | |
3506 | break; | |
3507 | case e1000_media_type_fiber: | |
3508 | ret_val = hw->mac.ops.check_for_link(hw); | |
3509 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); | |
3510 | break; | |
3511 | case e1000_media_type_internal_serdes: | |
3512 | ret_val = hw->mac.ops.check_for_link(hw); | |
3513 | link_active = adapter->hw.mac.serdes_has_link; | |
3514 | break; | |
3515 | default: | |
3516 | case e1000_media_type_unknown: | |
3517 | break; | |
3518 | } | |
3519 | ||
3520 | if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && | |
3521 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
3522 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
44defeb3 | 3523 | e_info("Gigabit has been disabled, downgrading speed\n"); |
318a94d6 JK |
3524 | } |
3525 | ||
3526 | return link_active; | |
3527 | } | |
3528 | ||
3529 | static void e1000e_enable_receives(struct e1000_adapter *adapter) | |
3530 | { | |
3531 | /* make sure the receive unit is started */ | |
3532 | if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && | |
3533 | (adapter->flags & FLAG_RX_RESTART_NOW)) { | |
3534 | struct e1000_hw *hw = &adapter->hw; | |
3535 | u32 rctl = er32(RCTL); | |
3536 | ew32(RCTL, rctl | E1000_RCTL_EN); | |
3537 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
3538 | } | |
3539 | } | |
3540 | ||
bc7f75fa AK |
3541 | /** |
3542 | * e1000_watchdog - Timer Call-back | |
3543 | * @data: pointer to adapter cast into an unsigned long | |
3544 | **/ | |
3545 | static void e1000_watchdog(unsigned long data) | |
3546 | { | |
3547 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
3548 | ||
3549 | /* Do the rest outside of interrupt context */ | |
3550 | schedule_work(&adapter->watchdog_task); | |
3551 | ||
3552 | /* TODO: make this use queue_delayed_work() */ | |
3553 | } | |
3554 | ||
3555 | static void e1000_watchdog_task(struct work_struct *work) | |
3556 | { | |
3557 | struct e1000_adapter *adapter = container_of(work, | |
3558 | struct e1000_adapter, watchdog_task); | |
bc7f75fa AK |
3559 | struct net_device *netdev = adapter->netdev; |
3560 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
75eb0fad | 3561 | struct e1000_phy_info *phy = &adapter->hw.phy; |
bc7f75fa AK |
3562 | struct e1000_ring *tx_ring = adapter->tx_ring; |
3563 | struct e1000_hw *hw = &adapter->hw; | |
3564 | u32 link, tctl; | |
bc7f75fa AK |
3565 | int tx_pending = 0; |
3566 | ||
b405e8df | 3567 | link = e1000e_has_link(adapter); |
318a94d6 | 3568 | if ((netif_carrier_ok(netdev)) && link) { |
23606cf5 RW |
3569 | /* Cancel scheduled suspend requests. */ |
3570 | pm_runtime_resume(netdev->dev.parent); | |
3571 | ||
318a94d6 | 3572 | e1000e_enable_receives(adapter); |
bc7f75fa | 3573 | goto link_up; |
bc7f75fa AK |
3574 | } |
3575 | ||
3576 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
3577 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
3578 | e1000_update_mng_vlan(adapter); | |
3579 | ||
bc7f75fa AK |
3580 | if (link) { |
3581 | if (!netif_carrier_ok(netdev)) { | |
3582 | bool txb2b = 1; | |
23606cf5 RW |
3583 | |
3584 | /* Cancel scheduled suspend requests. */ | |
3585 | pm_runtime_resume(netdev->dev.parent); | |
3586 | ||
318a94d6 | 3587 | /* update snapshot of PHY registers on LSC */ |
7c25769f | 3588 | e1000_phy_read_status(adapter); |
bc7f75fa AK |
3589 | mac->ops.get_link_up_info(&adapter->hw, |
3590 | &adapter->link_speed, | |
3591 | &adapter->link_duplex); | |
3592 | e1000_print_link_info(adapter); | |
f4187b56 BA |
3593 | /* |
3594 | * On supported PHYs, check for duplex mismatch only | |
3595 | * if link has autonegotiated at 10/100 half | |
3596 | */ | |
3597 | if ((hw->phy.type == e1000_phy_igp_3 || | |
3598 | hw->phy.type == e1000_phy_bm) && | |
3599 | (hw->mac.autoneg == true) && | |
3600 | (adapter->link_speed == SPEED_10 || | |
3601 | adapter->link_speed == SPEED_100) && | |
3602 | (adapter->link_duplex == HALF_DUPLEX)) { | |
3603 | u16 autoneg_exp; | |
3604 | ||
3605 | e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); | |
3606 | ||
3607 | if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) | |
3608 | e_info("Autonegotiated half duplex but" | |
3609 | " link partner cannot autoneg. " | |
3610 | " Try forcing full duplex if " | |
3611 | "link gets many collisions.\n"); | |
3612 | } | |
3613 | ||
ad68076e BA |
3614 | /* |
3615 | * tweak tx_queue_len according to speed/duplex | |
3616 | * and adjust the timeout factor | |
3617 | */ | |
bc7f75fa AK |
3618 | netdev->tx_queue_len = adapter->tx_queue_len; |
3619 | adapter->tx_timeout_factor = 1; | |
3620 | switch (adapter->link_speed) { | |
3621 | case SPEED_10: | |
3622 | txb2b = 0; | |
3623 | netdev->tx_queue_len = 10; | |
10f1b492 | 3624 | adapter->tx_timeout_factor = 16; |
bc7f75fa AK |
3625 | break; |
3626 | case SPEED_100: | |
3627 | txb2b = 0; | |
3628 | netdev->tx_queue_len = 100; | |
4c86e0b9 | 3629 | adapter->tx_timeout_factor = 10; |
bc7f75fa AK |
3630 | break; |
3631 | } | |
3632 | ||
ad68076e BA |
3633 | /* |
3634 | * workaround: re-program speed mode bit after | |
3635 | * link-up event | |
3636 | */ | |
bc7f75fa AK |
3637 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
3638 | !txb2b) { | |
3639 | u32 tarc0; | |
e9ec2c0f | 3640 | tarc0 = er32(TARC(0)); |
bc7f75fa | 3641 | tarc0 &= ~SPEED_MODE_BIT; |
e9ec2c0f | 3642 | ew32(TARC(0), tarc0); |
bc7f75fa AK |
3643 | } |
3644 | ||
ad68076e BA |
3645 | /* |
3646 | * disable TSO for pcie and 10/100 speeds, to avoid | |
3647 | * some hardware issues | |
3648 | */ | |
bc7f75fa AK |
3649 | if (!(adapter->flags & FLAG_TSO_FORCE)) { |
3650 | switch (adapter->link_speed) { | |
3651 | case SPEED_10: | |
3652 | case SPEED_100: | |
44defeb3 | 3653 | e_info("10/100 speed: disabling TSO\n"); |
bc7f75fa AK |
3654 | netdev->features &= ~NETIF_F_TSO; |
3655 | netdev->features &= ~NETIF_F_TSO6; | |
3656 | break; | |
3657 | case SPEED_1000: | |
3658 | netdev->features |= NETIF_F_TSO; | |
3659 | netdev->features |= NETIF_F_TSO6; | |
3660 | break; | |
3661 | default: | |
3662 | /* oops */ | |
3663 | break; | |
3664 | } | |
3665 | } | |
3666 | ||
ad68076e BA |
3667 | /* |
3668 | * enable transmits in the hardware, need to do this | |
3669 | * after setting TARC(0) | |
3670 | */ | |
bc7f75fa AK |
3671 | tctl = er32(TCTL); |
3672 | tctl |= E1000_TCTL_EN; | |
3673 | ew32(TCTL, tctl); | |
3674 | ||
75eb0fad BA |
3675 | /* |
3676 | * Perform any post-link-up configuration before | |
3677 | * reporting link up. | |
3678 | */ | |
3679 | if (phy->ops.cfg_on_link_up) | |
3680 | phy->ops.cfg_on_link_up(hw); | |
3681 | ||
bc7f75fa | 3682 | netif_carrier_on(netdev); |
bc7f75fa AK |
3683 | |
3684 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3685 | mod_timer(&adapter->phy_info_timer, | |
3686 | round_jiffies(jiffies + 2 * HZ)); | |
bc7f75fa AK |
3687 | } |
3688 | } else { | |
3689 | if (netif_carrier_ok(netdev)) { | |
3690 | adapter->link_speed = 0; | |
3691 | adapter->link_duplex = 0; | |
8f12fe86 BA |
3692 | /* Link status message must follow this format */ |
3693 | printk(KERN_INFO "e1000e: %s NIC Link is Down\n", | |
3694 | adapter->netdev->name); | |
bc7f75fa | 3695 | netif_carrier_off(netdev); |
bc7f75fa AK |
3696 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
3697 | mod_timer(&adapter->phy_info_timer, | |
3698 | round_jiffies(jiffies + 2 * HZ)); | |
3699 | ||
3700 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) | |
3701 | schedule_work(&adapter->reset_task); | |
23606cf5 RW |
3702 | else |
3703 | pm_schedule_suspend(netdev->dev.parent, | |
3704 | LINK_TIMEOUT); | |
bc7f75fa AK |
3705 | } |
3706 | } | |
3707 | ||
3708 | link_up: | |
3709 | e1000e_update_stats(adapter); | |
3710 | ||
3711 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
3712 | adapter->tpt_old = adapter->stats.tpt; | |
3713 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
3714 | adapter->colc_old = adapter->stats.colc; | |
3715 | ||
7c25769f BA |
3716 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
3717 | adapter->gorc_old = adapter->stats.gorc; | |
3718 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
3719 | adapter->gotc_old = adapter->stats.gotc; | |
bc7f75fa AK |
3720 | |
3721 | e1000e_update_adaptive(&adapter->hw); | |
3722 | ||
3723 | if (!netif_carrier_ok(netdev)) { | |
3724 | tx_pending = (e1000_desc_unused(tx_ring) + 1 < | |
3725 | tx_ring->count); | |
3726 | if (tx_pending) { | |
ad68076e BA |
3727 | /* |
3728 | * We've lost link, so the controller stops DMA, | |
bc7f75fa AK |
3729 | * but we've got queued Tx work that's never going |
3730 | * to get done, so reset controller to flush Tx. | |
ad68076e BA |
3731 | * (Do the reset outside of interrupt context). |
3732 | */ | |
bc7f75fa AK |
3733 | adapter->tx_timeout_count++; |
3734 | schedule_work(&adapter->reset_task); | |
c2d5ab49 JB |
3735 | /* return immediately since reset is imminent */ |
3736 | return; | |
bc7f75fa AK |
3737 | } |
3738 | } | |
3739 | ||
ad68076e | 3740 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
4662e82b BA |
3741 | if (adapter->msix_entries) |
3742 | ew32(ICS, adapter->rx_ring->ims_val); | |
3743 | else | |
3744 | ew32(ICS, E1000_ICS_RXDMT0); | |
bc7f75fa AK |
3745 | |
3746 | /* Force detection of hung controller every watchdog period */ | |
3747 | adapter->detect_tx_hung = 1; | |
3748 | ||
ad68076e BA |
3749 | /* |
3750 | * With 82571 controllers, LAA may be overwritten due to controller | |
3751 | * reset from the other port. Set the appropriate LAA in RAR[0] | |
3752 | */ | |
bc7f75fa AK |
3753 | if (e1000e_get_laa_state_82571(hw)) |
3754 | e1000e_rar_set(hw, adapter->hw.mac.addr, 0); | |
3755 | ||
3756 | /* Reset the timer */ | |
3757 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
3758 | mod_timer(&adapter->watchdog_timer, | |
3759 | round_jiffies(jiffies + 2 * HZ)); | |
3760 | } | |
3761 | ||
3762 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
3763 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
3764 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
3765 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
3766 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 | |
3767 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
3768 | ||
3769 | static int e1000_tso(struct e1000_adapter *adapter, | |
3770 | struct sk_buff *skb) | |
3771 | { | |
3772 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3773 | struct e1000_context_desc *context_desc; | |
3774 | struct e1000_buffer *buffer_info; | |
3775 | unsigned int i; | |
3776 | u32 cmd_length = 0; | |
3777 | u16 ipcse = 0, tucse, mss; | |
3778 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
3779 | int err; | |
3780 | ||
3d5e33c9 BA |
3781 | if (!skb_is_gso(skb)) |
3782 | return 0; | |
bc7f75fa | 3783 | |
3d5e33c9 BA |
3784 | if (skb_header_cloned(skb)) { |
3785 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
3786 | if (err) | |
3787 | return err; | |
bc7f75fa AK |
3788 | } |
3789 | ||
3d5e33c9 BA |
3790 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
3791 | mss = skb_shinfo(skb)->gso_size; | |
3792 | if (skb->protocol == htons(ETH_P_IP)) { | |
3793 | struct iphdr *iph = ip_hdr(skb); | |
3794 | iph->tot_len = 0; | |
3795 | iph->check = 0; | |
3796 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, | |
3797 | 0, IPPROTO_TCP, 0); | |
3798 | cmd_length = E1000_TXD_CMD_IP; | |
3799 | ipcse = skb_transport_offset(skb) - 1; | |
8e1e8a47 | 3800 | } else if (skb_is_gso_v6(skb)) { |
3d5e33c9 BA |
3801 | ipv6_hdr(skb)->payload_len = 0; |
3802 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
3803 | &ipv6_hdr(skb)->daddr, | |
3804 | 0, IPPROTO_TCP, 0); | |
3805 | ipcse = 0; | |
3806 | } | |
3807 | ipcss = skb_network_offset(skb); | |
3808 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
3809 | tucss = skb_transport_offset(skb); | |
3810 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
3811 | tucse = 0; | |
3812 | ||
3813 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
3814 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); | |
3815 | ||
3816 | i = tx_ring->next_to_use; | |
3817 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
3818 | buffer_info = &tx_ring->buffer_info[i]; | |
3819 | ||
3820 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
3821 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
3822 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
3823 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
3824 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
3825 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
3826 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
3827 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
3828 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
3829 | ||
3830 | buffer_info->time_stamp = jiffies; | |
3831 | buffer_info->next_to_watch = i; | |
3832 | ||
3833 | i++; | |
3834 | if (i == tx_ring->count) | |
3835 | i = 0; | |
3836 | tx_ring->next_to_use = i; | |
3837 | ||
3838 | return 1; | |
bc7f75fa AK |
3839 | } |
3840 | ||
3841 | static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
3842 | { | |
3843 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3844 | struct e1000_context_desc *context_desc; | |
3845 | struct e1000_buffer *buffer_info; | |
3846 | unsigned int i; | |
3847 | u8 css; | |
af807c82 | 3848 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
5f66f208 | 3849 | __be16 protocol; |
bc7f75fa | 3850 | |
af807c82 DG |
3851 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
3852 | return 0; | |
bc7f75fa | 3853 | |
5f66f208 AJ |
3854 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
3855 | protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; | |
3856 | else | |
3857 | protocol = skb->protocol; | |
3858 | ||
3f518390 | 3859 | switch (protocol) { |
09640e63 | 3860 | case cpu_to_be16(ETH_P_IP): |
af807c82 DG |
3861 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
3862 | cmd_len |= E1000_TXD_CMD_TCP; | |
3863 | break; | |
09640e63 | 3864 | case cpu_to_be16(ETH_P_IPV6): |
af807c82 DG |
3865 | /* XXX not handling all IPV6 headers */ |
3866 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
3867 | cmd_len |= E1000_TXD_CMD_TCP; | |
3868 | break; | |
3869 | default: | |
3870 | if (unlikely(net_ratelimit())) | |
5f66f208 AJ |
3871 | e_warn("checksum_partial proto=%x!\n", |
3872 | be16_to_cpu(protocol)); | |
af807c82 | 3873 | break; |
bc7f75fa AK |
3874 | } |
3875 | ||
af807c82 DG |
3876 | css = skb_transport_offset(skb); |
3877 | ||
3878 | i = tx_ring->next_to_use; | |
3879 | buffer_info = &tx_ring->buffer_info[i]; | |
3880 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
3881 | ||
3882 | context_desc->lower_setup.ip_config = 0; | |
3883 | context_desc->upper_setup.tcp_fields.tucss = css; | |
3884 | context_desc->upper_setup.tcp_fields.tucso = | |
3885 | css + skb->csum_offset; | |
3886 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
3887 | context_desc->tcp_seg_setup.data = 0; | |
3888 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
3889 | ||
3890 | buffer_info->time_stamp = jiffies; | |
3891 | buffer_info->next_to_watch = i; | |
3892 | ||
3893 | i++; | |
3894 | if (i == tx_ring->count) | |
3895 | i = 0; | |
3896 | tx_ring->next_to_use = i; | |
3897 | ||
3898 | return 1; | |
bc7f75fa AK |
3899 | } |
3900 | ||
3901 | #define E1000_MAX_PER_TXD 8192 | |
3902 | #define E1000_MAX_TXD_PWR 12 | |
3903 | ||
3904 | static int e1000_tx_map(struct e1000_adapter *adapter, | |
3905 | struct sk_buff *skb, unsigned int first, | |
3906 | unsigned int max_per_txd, unsigned int nr_frags, | |
3907 | unsigned int mss) | |
3908 | { | |
3909 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
03b1320d | 3910 | struct pci_dev *pdev = adapter->pdev; |
1b7719c4 | 3911 | struct e1000_buffer *buffer_info; |
8ddc951c | 3912 | unsigned int len = skb_headlen(skb); |
03b1320d | 3913 | unsigned int offset = 0, size, count = 0, i; |
bc7f75fa AK |
3914 | unsigned int f; |
3915 | ||
3916 | i = tx_ring->next_to_use; | |
3917 | ||
3918 | while (len) { | |
1b7719c4 | 3919 | buffer_info = &tx_ring->buffer_info[i]; |
bc7f75fa AK |
3920 | size = min(len, max_per_txd); |
3921 | ||
bc7f75fa | 3922 | buffer_info->length = size; |
bc7f75fa | 3923 | buffer_info->time_stamp = jiffies; |
bc7f75fa | 3924 | buffer_info->next_to_watch = i; |
03b1320d AD |
3925 | buffer_info->dma = pci_map_single(pdev, skb->data + offset, |
3926 | size, PCI_DMA_TODEVICE); | |
3927 | buffer_info->mapped_as_page = false; | |
3928 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) | |
3929 | goto dma_error; | |
bc7f75fa AK |
3930 | |
3931 | len -= size; | |
3932 | offset += size; | |
03b1320d | 3933 | count++; |
1b7719c4 AD |
3934 | |
3935 | if (len) { | |
3936 | i++; | |
3937 | if (i == tx_ring->count) | |
3938 | i = 0; | |
3939 | } | |
bc7f75fa AK |
3940 | } |
3941 | ||
3942 | for (f = 0; f < nr_frags; f++) { | |
3943 | struct skb_frag_struct *frag; | |
3944 | ||
3945 | frag = &skb_shinfo(skb)->frags[f]; | |
3946 | len = frag->size; | |
03b1320d | 3947 | offset = frag->page_offset; |
bc7f75fa AK |
3948 | |
3949 | while (len) { | |
1b7719c4 AD |
3950 | i++; |
3951 | if (i == tx_ring->count) | |
3952 | i = 0; | |
3953 | ||
bc7f75fa AK |
3954 | buffer_info = &tx_ring->buffer_info[i]; |
3955 | size = min(len, max_per_txd); | |
bc7f75fa AK |
3956 | |
3957 | buffer_info->length = size; | |
3958 | buffer_info->time_stamp = jiffies; | |
bc7f75fa | 3959 | buffer_info->next_to_watch = i; |
03b1320d AD |
3960 | buffer_info->dma = pci_map_page(pdev, frag->page, |
3961 | offset, size, | |
3962 | PCI_DMA_TODEVICE); | |
3963 | buffer_info->mapped_as_page = true; | |
3964 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) | |
3965 | goto dma_error; | |
bc7f75fa AK |
3966 | |
3967 | len -= size; | |
3968 | offset += size; | |
3969 | count++; | |
bc7f75fa AK |
3970 | } |
3971 | } | |
3972 | ||
bc7f75fa AK |
3973 | tx_ring->buffer_info[i].skb = skb; |
3974 | tx_ring->buffer_info[first].next_to_watch = i; | |
3975 | ||
3976 | return count; | |
03b1320d AD |
3977 | |
3978 | dma_error: | |
3979 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
3980 | buffer_info->dma = 0; | |
c1fa347f | 3981 | if (count) |
03b1320d | 3982 | count--; |
c1fa347f RK |
3983 | |
3984 | while (count--) { | |
3985 | if (i==0) | |
03b1320d | 3986 | i += tx_ring->count; |
c1fa347f | 3987 | i--; |
03b1320d AD |
3988 | buffer_info = &tx_ring->buffer_info[i]; |
3989 | e1000_put_txbuf(adapter, buffer_info);; | |
3990 | } | |
3991 | ||
3992 | return 0; | |
bc7f75fa AK |
3993 | } |
3994 | ||
3995 | static void e1000_tx_queue(struct e1000_adapter *adapter, | |
3996 | int tx_flags, int count) | |
3997 | { | |
3998 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
3999 | struct e1000_tx_desc *tx_desc = NULL; | |
4000 | struct e1000_buffer *buffer_info; | |
4001 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
4002 | unsigned int i; | |
4003 | ||
4004 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
4005 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
4006 | E1000_TXD_CMD_TSE; | |
4007 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
4008 | ||
4009 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
4010 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
4011 | } | |
4012 | ||
4013 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
4014 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
4015 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
4016 | } | |
4017 | ||
4018 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
4019 | txd_lower |= E1000_TXD_CMD_VLE; | |
4020 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
4021 | } | |
4022 | ||
4023 | i = tx_ring->next_to_use; | |
4024 | ||
4025 | while (count--) { | |
4026 | buffer_info = &tx_ring->buffer_info[i]; | |
4027 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
4028 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4029 | tx_desc->lower.data = | |
4030 | cpu_to_le32(txd_lower | buffer_info->length); | |
4031 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
4032 | ||
4033 | i++; | |
4034 | if (i == tx_ring->count) | |
4035 | i = 0; | |
4036 | } | |
4037 | ||
4038 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
4039 | ||
ad68076e BA |
4040 | /* |
4041 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
4042 | * know there are new descriptors to fetch. (Only |
4043 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
4044 | * such as IA-64). |
4045 | */ | |
bc7f75fa AK |
4046 | wmb(); |
4047 | ||
4048 | tx_ring->next_to_use = i; | |
4049 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
ad68076e BA |
4050 | /* |
4051 | * we need this if more than one processor can write to our tail | |
4052 | * at a time, it synchronizes IO on IA64/Altix systems | |
4053 | */ | |
bc7f75fa AK |
4054 | mmiowb(); |
4055 | } | |
4056 | ||
4057 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
4058 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
4059 | struct sk_buff *skb) | |
4060 | { | |
4061 | struct e1000_hw *hw = &adapter->hw; | |
4062 | u16 length, offset; | |
4063 | ||
4064 | if (vlan_tx_tag_present(skb)) { | |
8e95a202 JP |
4065 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
4066 | (adapter->hw.mng_cookie.status & | |
bc7f75fa AK |
4067 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
4068 | return 0; | |
4069 | } | |
4070 | ||
4071 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
4072 | return 0; | |
4073 | ||
4074 | if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) | |
4075 | return 0; | |
4076 | ||
4077 | { | |
4078 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); | |
4079 | struct udphdr *udp; | |
4080 | ||
4081 | if (ip->protocol != IPPROTO_UDP) | |
4082 | return 0; | |
4083 | ||
4084 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
4085 | if (ntohs(udp->dest) != 67) | |
4086 | return 0; | |
4087 | ||
4088 | offset = (u8 *)udp + 8 - skb->data; | |
4089 | length = skb->len - offset; | |
4090 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
4091 | } | |
4092 | ||
4093 | return 0; | |
4094 | } | |
4095 | ||
4096 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4097 | { | |
4098 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4099 | ||
4100 | netif_stop_queue(netdev); | |
ad68076e BA |
4101 | /* |
4102 | * Herbert's original patch had: | |
bc7f75fa | 4103 | * smp_mb__after_netif_stop_queue(); |
ad68076e BA |
4104 | * but since that doesn't exist yet, just open code it. |
4105 | */ | |
bc7f75fa AK |
4106 | smp_mb(); |
4107 | ||
ad68076e BA |
4108 | /* |
4109 | * We need to check again in a case another CPU has just | |
4110 | * made room available. | |
4111 | */ | |
bc7f75fa AK |
4112 | if (e1000_desc_unused(adapter->tx_ring) < size) |
4113 | return -EBUSY; | |
4114 | ||
4115 | /* A reprieve! */ | |
4116 | netif_start_queue(netdev); | |
4117 | ++adapter->restart_queue; | |
4118 | return 0; | |
4119 | } | |
4120 | ||
4121 | static int e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4122 | { | |
4123 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4124 | ||
4125 | if (e1000_desc_unused(adapter->tx_ring) >= size) | |
4126 | return 0; | |
4127 | return __e1000_maybe_stop_tx(netdev, size); | |
4128 | } | |
4129 | ||
4130 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) | |
3b29a56d SH |
4131 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
4132 | struct net_device *netdev) | |
bc7f75fa AK |
4133 | { |
4134 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4135 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4136 | unsigned int first; | |
4137 | unsigned int max_per_txd = E1000_MAX_PER_TXD; | |
4138 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
4139 | unsigned int tx_flags = 0; | |
4e6c709c | 4140 | unsigned int len = skb->len - skb->data_len; |
4e6c709c AK |
4141 | unsigned int nr_frags; |
4142 | unsigned int mss; | |
bc7f75fa AK |
4143 | int count = 0; |
4144 | int tso; | |
4145 | unsigned int f; | |
bc7f75fa AK |
4146 | |
4147 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
4148 | dev_kfree_skb_any(skb); | |
4149 | return NETDEV_TX_OK; | |
4150 | } | |
4151 | ||
4152 | if (skb->len <= 0) { | |
4153 | dev_kfree_skb_any(skb); | |
4154 | return NETDEV_TX_OK; | |
4155 | } | |
4156 | ||
4157 | mss = skb_shinfo(skb)->gso_size; | |
ad68076e BA |
4158 | /* |
4159 | * The controller does a simple calculation to | |
bc7f75fa AK |
4160 | * make sure there is enough room in the FIFO before |
4161 | * initiating the DMA for each buffer. The calc is: | |
4162 | * 4 = ceil(buffer len/mss). To make sure we don't | |
4163 | * overrun the FIFO, adjust the max buffer len if mss | |
ad68076e BA |
4164 | * drops. |
4165 | */ | |
bc7f75fa AK |
4166 | if (mss) { |
4167 | u8 hdr_len; | |
4168 | max_per_txd = min(mss << 2, max_per_txd); | |
4169 | max_txd_pwr = fls(max_per_txd) - 1; | |
4170 | ||
ad68076e BA |
4171 | /* |
4172 | * TSO Workaround for 82571/2/3 Controllers -- if skb->data | |
4173 | * points to just header, pull a few bytes of payload from | |
4174 | * frags into skb->data | |
4175 | */ | |
bc7f75fa | 4176 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
ad68076e BA |
4177 | /* |
4178 | * we do this workaround for ES2LAN, but it is un-necessary, | |
4179 | * avoiding it could save a lot of cycles | |
4180 | */ | |
4e6c709c | 4181 | if (skb->data_len && (hdr_len == len)) { |
bc7f75fa AK |
4182 | unsigned int pull_size; |
4183 | ||
4184 | pull_size = min((unsigned int)4, skb->data_len); | |
4185 | if (!__pskb_pull_tail(skb, pull_size)) { | |
44defeb3 | 4186 | e_err("__pskb_pull_tail failed.\n"); |
bc7f75fa AK |
4187 | dev_kfree_skb_any(skb); |
4188 | return NETDEV_TX_OK; | |
4189 | } | |
4190 | len = skb->len - skb->data_len; | |
4191 | } | |
4192 | } | |
4193 | ||
4194 | /* reserve a descriptor for the offload context */ | |
4195 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
4196 | count++; | |
4197 | count++; | |
4198 | ||
4199 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
4200 | ||
4201 | nr_frags = skb_shinfo(skb)->nr_frags; | |
4202 | for (f = 0; f < nr_frags; f++) | |
4203 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
4204 | max_txd_pwr); | |
4205 | ||
4206 | if (adapter->hw.mac.tx_pkt_filtering) | |
4207 | e1000_transfer_dhcp_info(adapter, skb); | |
4208 | ||
ad68076e BA |
4209 | /* |
4210 | * need: count + 2 desc gap to keep tail from touching | |
4211 | * head, otherwise try next time | |
4212 | */ | |
92af3e95 | 4213 | if (e1000_maybe_stop_tx(netdev, count + 2)) |
bc7f75fa | 4214 | return NETDEV_TX_BUSY; |
bc7f75fa AK |
4215 | |
4216 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
4217 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
4218 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
4219 | } | |
4220 | ||
4221 | first = tx_ring->next_to_use; | |
4222 | ||
4223 | tso = e1000_tso(adapter, skb); | |
4224 | if (tso < 0) { | |
4225 | dev_kfree_skb_any(skb); | |
bc7f75fa AK |
4226 | return NETDEV_TX_OK; |
4227 | } | |
4228 | ||
4229 | if (tso) | |
4230 | tx_flags |= E1000_TX_FLAGS_TSO; | |
4231 | else if (e1000_tx_csum(adapter, skb)) | |
4232 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
4233 | ||
ad68076e BA |
4234 | /* |
4235 | * Old method was to assume IPv4 packet by default if TSO was enabled. | |
bc7f75fa | 4236 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
ad68076e BA |
4237 | * no longer assume, we must. |
4238 | */ | |
bc7f75fa AK |
4239 | if (skb->protocol == htons(ETH_P_IP)) |
4240 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
4241 | ||
1b7719c4 | 4242 | /* if count is 0 then mapping error has occured */ |
bc7f75fa | 4243 | count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); |
1b7719c4 AD |
4244 | if (count) { |
4245 | e1000_tx_queue(adapter, tx_flags, count); | |
1b7719c4 AD |
4246 | /* Make sure there is space in the ring for the next send. */ |
4247 | e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); | |
4248 | ||
4249 | } else { | |
bc7f75fa | 4250 | dev_kfree_skb_any(skb); |
1b7719c4 AD |
4251 | tx_ring->buffer_info[first].time_stamp = 0; |
4252 | tx_ring->next_to_use = first; | |
bc7f75fa AK |
4253 | } |
4254 | ||
bc7f75fa AK |
4255 | return NETDEV_TX_OK; |
4256 | } | |
4257 | ||
4258 | /** | |
4259 | * e1000_tx_timeout - Respond to a Tx Hang | |
4260 | * @netdev: network interface device structure | |
4261 | **/ | |
4262 | static void e1000_tx_timeout(struct net_device *netdev) | |
4263 | { | |
4264 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4265 | ||
4266 | /* Do the reset outside of interrupt context */ | |
4267 | adapter->tx_timeout_count++; | |
4268 | schedule_work(&adapter->reset_task); | |
4269 | } | |
4270 | ||
4271 | static void e1000_reset_task(struct work_struct *work) | |
4272 | { | |
4273 | struct e1000_adapter *adapter; | |
4274 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
4275 | ||
4276 | e1000e_reinit_locked(adapter); | |
4277 | } | |
4278 | ||
4279 | /** | |
4280 | * e1000_get_stats - Get System Network Statistics | |
4281 | * @netdev: network interface device structure | |
4282 | * | |
4283 | * Returns the address of the device statistics structure. | |
4284 | * The statistics are actually updated from the timer callback. | |
4285 | **/ | |
4286 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) | |
4287 | { | |
bc7f75fa | 4288 | /* only return the current stats */ |
7274c20f | 4289 | return &netdev->stats; |
bc7f75fa AK |
4290 | } |
4291 | ||
4292 | /** | |
4293 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
4294 | * @netdev: network interface device structure | |
4295 | * @new_mtu: new value for maximum frame size | |
4296 | * | |
4297 | * Returns 0 on success, negative on failure | |
4298 | **/ | |
4299 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
4300 | { | |
4301 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4302 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
4303 | ||
2adc55c9 BA |
4304 | /* Jumbo frame support */ |
4305 | if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && | |
4306 | !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
4307 | e_err("Jumbo Frames not supported.\n"); | |
bc7f75fa AK |
4308 | return -EINVAL; |
4309 | } | |
4310 | ||
2adc55c9 BA |
4311 | /* Supported frame sizes */ |
4312 | if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || | |
4313 | (max_frame > adapter->max_hw_frame_size)) { | |
4314 | e_err("Unsupported MTU setting\n"); | |
bc7f75fa AK |
4315 | return -EINVAL; |
4316 | } | |
4317 | ||
4318 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
4319 | msleep(1); | |
610c9928 | 4320 | /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
318a94d6 | 4321 | adapter->max_frame_size = max_frame; |
610c9928 BA |
4322 | e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
4323 | netdev->mtu = new_mtu; | |
bc7f75fa AK |
4324 | if (netif_running(netdev)) |
4325 | e1000e_down(adapter); | |
4326 | ||
ad68076e BA |
4327 | /* |
4328 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
bc7f75fa AK |
4329 | * means we reserve 2 more, this pushes us to allocate from the next |
4330 | * larger slab size. | |
ad68076e | 4331 | * i.e. RXBUFFER_2048 --> size-4096 slab |
97ac8cae BA |
4332 | * However with the new *_jumbo_rx* routines, jumbo receives will use |
4333 | * fragmented skbs | |
ad68076e | 4334 | */ |
bc7f75fa | 4335 | |
9926146b | 4336 | if (max_frame <= 2048) |
bc7f75fa AK |
4337 | adapter->rx_buffer_len = 2048; |
4338 | else | |
4339 | adapter->rx_buffer_len = 4096; | |
4340 | ||
4341 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
4342 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
4343 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
4344 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN | |
ad68076e | 4345 | + ETH_FCS_LEN; |
bc7f75fa | 4346 | |
bc7f75fa AK |
4347 | if (netif_running(netdev)) |
4348 | e1000e_up(adapter); | |
4349 | else | |
4350 | e1000e_reset(adapter); | |
4351 | ||
4352 | clear_bit(__E1000_RESETTING, &adapter->state); | |
4353 | ||
4354 | return 0; | |
4355 | } | |
4356 | ||
4357 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
4358 | int cmd) | |
4359 | { | |
4360 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4361 | struct mii_ioctl_data *data = if_mii(ifr); | |
bc7f75fa | 4362 | |
318a94d6 | 4363 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
4364 | return -EOPNOTSUPP; |
4365 | ||
4366 | switch (cmd) { | |
4367 | case SIOCGMIIPHY: | |
4368 | data->phy_id = adapter->hw.phy.addr; | |
4369 | break; | |
4370 | case SIOCGMIIREG: | |
b16a002e BA |
4371 | e1000_phy_read_status(adapter); |
4372 | ||
7c25769f BA |
4373 | switch (data->reg_num & 0x1F) { |
4374 | case MII_BMCR: | |
4375 | data->val_out = adapter->phy_regs.bmcr; | |
4376 | break; | |
4377 | case MII_BMSR: | |
4378 | data->val_out = adapter->phy_regs.bmsr; | |
4379 | break; | |
4380 | case MII_PHYSID1: | |
4381 | data->val_out = (adapter->hw.phy.id >> 16); | |
4382 | break; | |
4383 | case MII_PHYSID2: | |
4384 | data->val_out = (adapter->hw.phy.id & 0xFFFF); | |
4385 | break; | |
4386 | case MII_ADVERTISE: | |
4387 | data->val_out = adapter->phy_regs.advertise; | |
4388 | break; | |
4389 | case MII_LPA: | |
4390 | data->val_out = adapter->phy_regs.lpa; | |
4391 | break; | |
4392 | case MII_EXPANSION: | |
4393 | data->val_out = adapter->phy_regs.expansion; | |
4394 | break; | |
4395 | case MII_CTRL1000: | |
4396 | data->val_out = adapter->phy_regs.ctrl1000; | |
4397 | break; | |
4398 | case MII_STAT1000: | |
4399 | data->val_out = adapter->phy_regs.stat1000; | |
4400 | break; | |
4401 | case MII_ESTATUS: | |
4402 | data->val_out = adapter->phy_regs.estatus; | |
4403 | break; | |
4404 | default: | |
bc7f75fa AK |
4405 | return -EIO; |
4406 | } | |
bc7f75fa AK |
4407 | break; |
4408 | case SIOCSMIIREG: | |
4409 | default: | |
4410 | return -EOPNOTSUPP; | |
4411 | } | |
4412 | return 0; | |
4413 | } | |
4414 | ||
4415 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4416 | { | |
4417 | switch (cmd) { | |
4418 | case SIOCGMIIPHY: | |
4419 | case SIOCGMIIREG: | |
4420 | case SIOCSMIIREG: | |
4421 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4422 | default: | |
4423 | return -EOPNOTSUPP; | |
4424 | } | |
4425 | } | |
4426 | ||
a4f58f54 BA |
4427 | static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
4428 | { | |
4429 | struct e1000_hw *hw = &adapter->hw; | |
4430 | u32 i, mac_reg; | |
4431 | u16 phy_reg; | |
4432 | int retval = 0; | |
4433 | ||
4434 | /* copy MAC RARs to PHY RARs */ | |
4435 | for (i = 0; i < adapter->hw.mac.rar_entry_count; i++) { | |
4436 | mac_reg = er32(RAL(i)); | |
4437 | e1e_wphy(hw, BM_RAR_L(i), (u16)(mac_reg & 0xFFFF)); | |
4438 | e1e_wphy(hw, BM_RAR_M(i), (u16)((mac_reg >> 16) & 0xFFFF)); | |
4439 | mac_reg = er32(RAH(i)); | |
4440 | e1e_wphy(hw, BM_RAR_H(i), (u16)(mac_reg & 0xFFFF)); | |
4441 | e1e_wphy(hw, BM_RAR_CTRL(i), (u16)((mac_reg >> 16) & 0xFFFF)); | |
4442 | } | |
4443 | ||
4444 | /* copy MAC MTA to PHY MTA */ | |
4445 | for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { | |
4446 | mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); | |
4447 | e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF)); | |
4448 | e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF)); | |
4449 | } | |
4450 | ||
4451 | /* configure PHY Rx Control register */ | |
4452 | e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg); | |
4453 | mac_reg = er32(RCTL); | |
4454 | if (mac_reg & E1000_RCTL_UPE) | |
4455 | phy_reg |= BM_RCTL_UPE; | |
4456 | if (mac_reg & E1000_RCTL_MPE) | |
4457 | phy_reg |= BM_RCTL_MPE; | |
4458 | phy_reg &= ~(BM_RCTL_MO_MASK); | |
4459 | if (mac_reg & E1000_RCTL_MO_3) | |
4460 | phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) | |
4461 | << BM_RCTL_MO_SHIFT); | |
4462 | if (mac_reg & E1000_RCTL_BAM) | |
4463 | phy_reg |= BM_RCTL_BAM; | |
4464 | if (mac_reg & E1000_RCTL_PMCF) | |
4465 | phy_reg |= BM_RCTL_PMCF; | |
4466 | mac_reg = er32(CTRL); | |
4467 | if (mac_reg & E1000_CTRL_RFCE) | |
4468 | phy_reg |= BM_RCTL_RFCE; | |
4469 | e1e_wphy(&adapter->hw, BM_RCTL, phy_reg); | |
4470 | ||
4471 | /* enable PHY wakeup in MAC register */ | |
4472 | ew32(WUFC, wufc); | |
4473 | ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); | |
4474 | ||
4475 | /* configure and enable PHY wakeup in PHY registers */ | |
4476 | e1e_wphy(&adapter->hw, BM_WUFC, wufc); | |
4477 | e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); | |
4478 | ||
4479 | /* activate PHY wakeup */ | |
94d8186a | 4480 | retval = hw->phy.ops.acquire(hw); |
a4f58f54 BA |
4481 | if (retval) { |
4482 | e_err("Could not acquire PHY\n"); | |
4483 | return retval; | |
4484 | } | |
4485 | e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, | |
4486 | (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); | |
4487 | retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg); | |
4488 | if (retval) { | |
4489 | e_err("Could not read PHY page 769\n"); | |
4490 | goto out; | |
4491 | } | |
4492 | phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; | |
4493 | retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); | |
4494 | if (retval) | |
4495 | e_err("Could not set PHY Host Wakeup bit\n"); | |
4496 | out: | |
94d8186a | 4497 | hw->phy.ops.release(hw); |
a4f58f54 BA |
4498 | |
4499 | return retval; | |
4500 | } | |
4501 | ||
23606cf5 RW |
4502 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
4503 | bool runtime) | |
bc7f75fa AK |
4504 | { |
4505 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4506 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4507 | struct e1000_hw *hw = &adapter->hw; | |
4508 | u32 ctrl, ctrl_ext, rctl, status; | |
23606cf5 RW |
4509 | /* Runtime suspend should only enable wakeup for link changes */ |
4510 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; | |
bc7f75fa AK |
4511 | int retval = 0; |
4512 | ||
4513 | netif_device_detach(netdev); | |
4514 | ||
4515 | if (netif_running(netdev)) { | |
4516 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
4517 | e1000e_down(adapter); | |
4518 | e1000_free_irq(adapter); | |
4519 | } | |
4662e82b | 4520 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
4521 | |
4522 | retval = pci_save_state(pdev); | |
4523 | if (retval) | |
4524 | return retval; | |
4525 | ||
4526 | status = er32(STATUS); | |
4527 | if (status & E1000_STATUS_LU) | |
4528 | wufc &= ~E1000_WUFC_LNKC; | |
4529 | ||
4530 | if (wufc) { | |
4531 | e1000_setup_rctl(adapter); | |
4532 | e1000_set_multi(netdev); | |
4533 | ||
4534 | /* turn on all-multi mode if wake on multicast is enabled */ | |
4535 | if (wufc & E1000_WUFC_MC) { | |
4536 | rctl = er32(RCTL); | |
4537 | rctl |= E1000_RCTL_MPE; | |
4538 | ew32(RCTL, rctl); | |
4539 | } | |
4540 | ||
4541 | ctrl = er32(CTRL); | |
4542 | /* advertise wake from D3Cold */ | |
4543 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4544 | /* phy power management enable */ | |
4545 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
a4f58f54 BA |
4546 | ctrl |= E1000_CTRL_ADVD3WUC; |
4547 | if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) | |
4548 | ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; | |
bc7f75fa AK |
4549 | ew32(CTRL, ctrl); |
4550 | ||
318a94d6 JK |
4551 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
4552 | adapter->hw.phy.media_type == | |
4553 | e1000_media_type_internal_serdes) { | |
bc7f75fa AK |
4554 | /* keep the laser running in D3 */ |
4555 | ctrl_ext = er32(CTRL_EXT); | |
93a23f48 | 4556 | ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
bc7f75fa AK |
4557 | ew32(CTRL_EXT, ctrl_ext); |
4558 | } | |
4559 | ||
97ac8cae BA |
4560 | if (adapter->flags & FLAG_IS_ICH) |
4561 | e1000e_disable_gig_wol_ich8lan(&adapter->hw); | |
4562 | ||
bc7f75fa AK |
4563 | /* Allow time for pending master requests to run */ |
4564 | e1000e_disable_pcie_master(&adapter->hw); | |
4565 | ||
82776a4b | 4566 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
a4f58f54 BA |
4567 | /* enable wakeup by the PHY */ |
4568 | retval = e1000_init_phy_wakeup(adapter, wufc); | |
4569 | if (retval) | |
4570 | return retval; | |
4571 | } else { | |
4572 | /* enable wakeup by the MAC */ | |
4573 | ew32(WUFC, wufc); | |
4574 | ew32(WUC, E1000_WUC_PME_EN); | |
4575 | } | |
bc7f75fa AK |
4576 | } else { |
4577 | ew32(WUC, 0); | |
4578 | ew32(WUFC, 0); | |
bc7f75fa AK |
4579 | } |
4580 | ||
4f9de721 RW |
4581 | *enable_wake = !!wufc; |
4582 | ||
bc7f75fa | 4583 | /* make sure adapter isn't asleep if manageability is enabled */ |
82776a4b BA |
4584 | if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
4585 | (hw->mac.ops.check_mng_mode(hw))) | |
4f9de721 | 4586 | *enable_wake = true; |
bc7f75fa AK |
4587 | |
4588 | if (adapter->hw.phy.type == e1000_phy_igp_3) | |
4589 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); | |
4590 | ||
ad68076e BA |
4591 | /* |
4592 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
4593 | * would have already happened in close and is redundant. | |
4594 | */ | |
bc7f75fa AK |
4595 | e1000_release_hw_control(adapter); |
4596 | ||
4597 | pci_disable_device(pdev); | |
4598 | ||
4f9de721 RW |
4599 | return 0; |
4600 | } | |
4601 | ||
4602 | static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) | |
4603 | { | |
4604 | if (sleep && wake) { | |
4605 | pci_prepare_to_sleep(pdev); | |
4606 | return; | |
4607 | } | |
4608 | ||
4609 | pci_wake_from_d3(pdev, wake); | |
4610 | pci_set_power_state(pdev, PCI_D3hot); | |
4611 | } | |
4612 | ||
4613 | static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, | |
4614 | bool wake) | |
4615 | { | |
4616 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4617 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4618 | ||
005cbdfc AD |
4619 | /* |
4620 | * The pci-e switch on some quad port adapters will report a | |
4621 | * correctable error when the MAC transitions from D0 to D3. To | |
4622 | * prevent this we need to mask off the correctable errors on the | |
4623 | * downstream port of the pci-e switch. | |
4624 | */ | |
4625 | if (adapter->flags & FLAG_IS_QUAD_PORT) { | |
4626 | struct pci_dev *us_dev = pdev->bus->self; | |
4627 | int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); | |
4628 | u16 devctl; | |
4629 | ||
4630 | pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); | |
4631 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, | |
4632 | (devctl & ~PCI_EXP_DEVCTL_CERE)); | |
4633 | ||
4f9de721 | 4634 | e1000_power_off(pdev, sleep, wake); |
005cbdfc AD |
4635 | |
4636 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); | |
4637 | } else { | |
4f9de721 | 4638 | e1000_power_off(pdev, sleep, wake); |
005cbdfc | 4639 | } |
bc7f75fa AK |
4640 | } |
4641 | ||
1eae4eb2 AK |
4642 | static void e1000e_disable_l1aspm(struct pci_dev *pdev) |
4643 | { | |
4644 | int pos; | |
1eae4eb2 AK |
4645 | u16 val; |
4646 | ||
4647 | /* | |
4648 | * 82573 workaround - disable L1 ASPM on mobile chipsets | |
4649 | * | |
4650 | * L1 ASPM on various mobile (ich7) chipsets do not behave properly | |
4651 | * resulting in lost data or garbage information on the pci-e link | |
4652 | * level. This could result in (false) bad EEPROM checksum errors, | |
4653 | * long ping times (up to 2s) or even a system freeze/hang. | |
4654 | * | |
4655 | * Unfortunately this feature saves about 1W power consumption when | |
4656 | * active. | |
4657 | */ | |
4658 | pos = pci_find_capability(pdev, PCI_CAP_ID_EXP); | |
1eae4eb2 AK |
4659 | pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val); |
4660 | if (val & 0x2) { | |
4661 | dev_warn(&pdev->dev, "Disabling L1 ASPM\n"); | |
4662 | val &= ~0x2; | |
4663 | pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val); | |
4664 | } | |
4665 | } | |
4666 | ||
bc7f75fa | 4667 | #ifdef CONFIG_PM |
23606cf5 RW |
4668 | static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
4669 | { | |
4670 | return !!adapter->tx_ring->buffer_info; | |
4671 | } | |
4672 | ||
4673 | static int e1000_idle(struct device *dev) | |
4f9de721 | 4674 | { |
23606cf5 RW |
4675 | struct pci_dev *pdev = to_pci_dev(dev); |
4676 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4677 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4678 | ||
4679 | if (!e1000e_pm_ready(adapter)) | |
4680 | return 0; | |
4681 | ||
4682 | if (adapter->idle_check) { | |
4683 | adapter->idle_check = false; | |
4684 | if (!e1000e_has_link(adapter)) | |
4685 | pm_schedule_suspend(dev, MSEC_PER_SEC); | |
4686 | } | |
4687 | ||
4688 | return -EBUSY; | |
4689 | } | |
4690 | ||
4691 | static int e1000_suspend(struct device *dev) | |
4692 | { | |
4693 | struct pci_dev *pdev = to_pci_dev(dev); | |
4f9de721 RW |
4694 | int retval; |
4695 | bool wake; | |
4696 | ||
23606cf5 | 4697 | retval = __e1000_shutdown(pdev, &wake, false); |
4f9de721 RW |
4698 | if (!retval) |
4699 | e1000_complete_shutdown(pdev, true, wake); | |
4700 | ||
4701 | return retval; | |
4702 | } | |
4703 | ||
23606cf5 | 4704 | static int e1000_runtime_suspend(struct device *dev) |
bc7f75fa | 4705 | { |
23606cf5 | 4706 | struct pci_dev *pdev = to_pci_dev(dev); |
bc7f75fa AK |
4707 | struct net_device *netdev = pci_get_drvdata(pdev); |
4708 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
bc7f75fa | 4709 | |
23606cf5 RW |
4710 | if (e1000e_pm_ready(adapter)) { |
4711 | bool wake; | |
6e4f6f6b | 4712 | |
23606cf5 | 4713 | __e1000_shutdown(pdev, &wake, true); |
bc7f75fa AK |
4714 | } |
4715 | ||
23606cf5 RW |
4716 | return 0; |
4717 | } | |
bc7f75fa | 4718 | |
23606cf5 RW |
4719 | static int __e1000_resume(struct pci_dev *pdev) |
4720 | { | |
4721 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4722 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4723 | struct e1000_hw *hw = &adapter->hw; | |
4724 | u32 err; | |
4725 | ||
4726 | e1000e_disable_l1aspm(pdev); | |
bc7f75fa | 4727 | |
4662e82b | 4728 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa AK |
4729 | if (netif_running(netdev)) { |
4730 | err = e1000_request_irq(adapter); | |
4731 | if (err) | |
4732 | return err; | |
4733 | } | |
4734 | ||
4735 | e1000e_power_up_phy(adapter); | |
a4f58f54 BA |
4736 | |
4737 | /* report the system wakeup cause from S3/S4 */ | |
4738 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { | |
4739 | u16 phy_data; | |
4740 | ||
4741 | e1e_rphy(&adapter->hw, BM_WUS, &phy_data); | |
4742 | if (phy_data) { | |
4743 | e_info("PHY Wakeup cause - %s\n", | |
4744 | phy_data & E1000_WUS_EX ? "Unicast Packet" : | |
4745 | phy_data & E1000_WUS_MC ? "Multicast Packet" : | |
4746 | phy_data & E1000_WUS_BC ? "Broadcast Packet" : | |
4747 | phy_data & E1000_WUS_MAG ? "Magic Packet" : | |
4748 | phy_data & E1000_WUS_LNKC ? "Link Status " | |
4749 | " Change" : "other"); | |
4750 | } | |
4751 | e1e_wphy(&adapter->hw, BM_WUS, ~0); | |
4752 | } else { | |
4753 | u32 wus = er32(WUS); | |
4754 | if (wus) { | |
4755 | e_info("MAC Wakeup cause - %s\n", | |
4756 | wus & E1000_WUS_EX ? "Unicast Packet" : | |
4757 | wus & E1000_WUS_MC ? "Multicast Packet" : | |
4758 | wus & E1000_WUS_BC ? "Broadcast Packet" : | |
4759 | wus & E1000_WUS_MAG ? "Magic Packet" : | |
4760 | wus & E1000_WUS_LNKC ? "Link Status Change" : | |
4761 | "other"); | |
4762 | } | |
4763 | ew32(WUS, ~0); | |
4764 | } | |
4765 | ||
bc7f75fa | 4766 | e1000e_reset(adapter); |
bc7f75fa AK |
4767 | |
4768 | e1000_init_manageability(adapter); | |
4769 | ||
4770 | if (netif_running(netdev)) | |
4771 | e1000e_up(adapter); | |
4772 | ||
4773 | netif_device_attach(netdev); | |
4774 | ||
ad68076e BA |
4775 | /* |
4776 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 4777 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
4778 | * under the control of the driver. |
4779 | */ | |
c43bc57e | 4780 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
4781 | e1000_get_hw_control(adapter); |
4782 | ||
4783 | return 0; | |
4784 | } | |
23606cf5 RW |
4785 | |
4786 | static int e1000_resume(struct device *dev) | |
4787 | { | |
4788 | struct pci_dev *pdev = to_pci_dev(dev); | |
4789 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4790 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4791 | ||
4792 | if (e1000e_pm_ready(adapter)) | |
4793 | adapter->idle_check = true; | |
4794 | ||
4795 | return __e1000_resume(pdev); | |
4796 | } | |
4797 | ||
4798 | static int e1000_runtime_resume(struct device *dev) | |
4799 | { | |
4800 | struct pci_dev *pdev = to_pci_dev(dev); | |
4801 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4802 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4803 | ||
4804 | if (!e1000e_pm_ready(adapter)) | |
4805 | return 0; | |
4806 | ||
4807 | adapter->idle_check = !dev->power.runtime_auto; | |
4808 | return __e1000_resume(pdev); | |
4809 | } | |
bc7f75fa AK |
4810 | #endif |
4811 | ||
4812 | static void e1000_shutdown(struct pci_dev *pdev) | |
4813 | { | |
4f9de721 RW |
4814 | bool wake = false; |
4815 | ||
23606cf5 | 4816 | __e1000_shutdown(pdev, &wake, false); |
4f9de721 RW |
4817 | |
4818 | if (system_state == SYSTEM_POWER_OFF) | |
4819 | e1000_complete_shutdown(pdev, false, wake); | |
bc7f75fa AK |
4820 | } |
4821 | ||
4822 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4823 | /* | |
4824 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4825 | * without having to re-enable interrupts. It's not called while | |
4826 | * the interrupt routine is executing. | |
4827 | */ | |
4828 | static void e1000_netpoll(struct net_device *netdev) | |
4829 | { | |
4830 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4831 | ||
4832 | disable_irq(adapter->pdev->irq); | |
4833 | e1000_intr(adapter->pdev->irq, netdev); | |
4834 | ||
bc7f75fa AK |
4835 | enable_irq(adapter->pdev->irq); |
4836 | } | |
4837 | #endif | |
4838 | ||
4839 | /** | |
4840 | * e1000_io_error_detected - called when PCI error is detected | |
4841 | * @pdev: Pointer to PCI device | |
4842 | * @state: The current pci connection state | |
4843 | * | |
4844 | * This function is called after a PCI bus error affecting | |
4845 | * this device has been detected. | |
4846 | */ | |
4847 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
4848 | pci_channel_state_t state) | |
4849 | { | |
4850 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4851 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4852 | ||
4853 | netif_device_detach(netdev); | |
4854 | ||
c93b5a76 MM |
4855 | if (state == pci_channel_io_perm_failure) |
4856 | return PCI_ERS_RESULT_DISCONNECT; | |
4857 | ||
bc7f75fa AK |
4858 | if (netif_running(netdev)) |
4859 | e1000e_down(adapter); | |
4860 | pci_disable_device(pdev); | |
4861 | ||
4862 | /* Request a slot slot reset. */ | |
4863 | return PCI_ERS_RESULT_NEED_RESET; | |
4864 | } | |
4865 | ||
4866 | /** | |
4867 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4868 | * @pdev: Pointer to PCI device | |
4869 | * | |
4870 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4871 | * resembles the first-half of the e1000_resume routine. | |
4872 | */ | |
4873 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4874 | { | |
4875 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4876 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4877 | struct e1000_hw *hw = &adapter->hw; | |
6e4f6f6b | 4878 | int err; |
111b9dc5 | 4879 | pci_ers_result_t result; |
bc7f75fa | 4880 | |
1eae4eb2 | 4881 | e1000e_disable_l1aspm(pdev); |
f0f422e5 | 4882 | err = pci_enable_device_mem(pdev); |
6e4f6f6b | 4883 | if (err) { |
bc7f75fa AK |
4884 | dev_err(&pdev->dev, |
4885 | "Cannot re-enable PCI device after reset.\n"); | |
111b9dc5 JB |
4886 | result = PCI_ERS_RESULT_DISCONNECT; |
4887 | } else { | |
4888 | pci_set_master(pdev); | |
23606cf5 | 4889 | pdev->state_saved = true; |
111b9dc5 | 4890 | pci_restore_state(pdev); |
bc7f75fa | 4891 | |
111b9dc5 JB |
4892 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4893 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
bc7f75fa | 4894 | |
111b9dc5 JB |
4895 | e1000e_reset(adapter); |
4896 | ew32(WUS, ~0); | |
4897 | result = PCI_ERS_RESULT_RECOVERED; | |
4898 | } | |
bc7f75fa | 4899 | |
111b9dc5 JB |
4900 | pci_cleanup_aer_uncorrect_error_status(pdev); |
4901 | ||
4902 | return result; | |
bc7f75fa AK |
4903 | } |
4904 | ||
4905 | /** | |
4906 | * e1000_io_resume - called when traffic can start flowing again. | |
4907 | * @pdev: Pointer to PCI device | |
4908 | * | |
4909 | * This callback is called when the error recovery driver tells us that | |
4910 | * its OK to resume normal operation. Implementation resembles the | |
4911 | * second-half of the e1000_resume routine. | |
4912 | */ | |
4913 | static void e1000_io_resume(struct pci_dev *pdev) | |
4914 | { | |
4915 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4916 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4917 | ||
4918 | e1000_init_manageability(adapter); | |
4919 | ||
4920 | if (netif_running(netdev)) { | |
4921 | if (e1000e_up(adapter)) { | |
4922 | dev_err(&pdev->dev, | |
4923 | "can't bring device back up after reset\n"); | |
4924 | return; | |
4925 | } | |
4926 | } | |
4927 | ||
4928 | netif_device_attach(netdev); | |
4929 | ||
ad68076e BA |
4930 | /* |
4931 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 4932 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
4933 | * under the control of the driver. |
4934 | */ | |
c43bc57e | 4935 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
4936 | e1000_get_hw_control(adapter); |
4937 | ||
4938 | } | |
4939 | ||
4940 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
4941 | { | |
4942 | struct e1000_hw *hw = &adapter->hw; | |
4943 | struct net_device *netdev = adapter->netdev; | |
69e3fd8c | 4944 | u32 pba_num; |
bc7f75fa AK |
4945 | |
4946 | /* print bus type/speed/width info */ | |
7c510e4b | 4947 | e_info("(PCI Express:2.5GB/s:%s) %pM\n", |
44defeb3 JK |
4948 | /* bus width */ |
4949 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
4950 | "Width x1"), | |
4951 | /* MAC address */ | |
7c510e4b | 4952 | netdev->dev_addr); |
44defeb3 JK |
4953 | e_info("Intel(R) PRO/%s Network Connection\n", |
4954 | (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); | |
69e3fd8c | 4955 | e1000e_read_pba_num(hw, &pba_num); |
44defeb3 JK |
4956 | e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
4957 | hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff)); | |
bc7f75fa AK |
4958 | } |
4959 | ||
10aa4c04 AK |
4960 | static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
4961 | { | |
4962 | struct e1000_hw *hw = &adapter->hw; | |
4963 | int ret_val; | |
4964 | u16 buf = 0; | |
4965 | ||
4966 | if (hw->mac.type != e1000_82573) | |
4967 | return; | |
4968 | ||
4969 | ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); | |
e243455d | 4970 | if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) { |
10aa4c04 | 4971 | /* Deep Smart Power Down (DSPD) */ |
6c2a9efa FP |
4972 | dev_warn(&adapter->pdev->dev, |
4973 | "Warning: detected DSPD enabled in EEPROM\n"); | |
10aa4c04 AK |
4974 | } |
4975 | ||
4976 | ret_val = e1000_read_nvm(hw, NVM_INIT_3GIO_3, 1, &buf); | |
e243455d | 4977 | if (!ret_val && (le16_to_cpu(buf) & (3 << 2))) { |
10aa4c04 | 4978 | /* ASPM enable */ |
6c2a9efa FP |
4979 | dev_warn(&adapter->pdev->dev, |
4980 | "Warning: detected ASPM enabled in EEPROM\n"); | |
10aa4c04 AK |
4981 | } |
4982 | } | |
4983 | ||
651c2466 SH |
4984 | static const struct net_device_ops e1000e_netdev_ops = { |
4985 | .ndo_open = e1000_open, | |
4986 | .ndo_stop = e1000_close, | |
00829823 | 4987 | .ndo_start_xmit = e1000_xmit_frame, |
651c2466 SH |
4988 | .ndo_get_stats = e1000_get_stats, |
4989 | .ndo_set_multicast_list = e1000_set_multi, | |
4990 | .ndo_set_mac_address = e1000_set_mac, | |
4991 | .ndo_change_mtu = e1000_change_mtu, | |
4992 | .ndo_do_ioctl = e1000_ioctl, | |
4993 | .ndo_tx_timeout = e1000_tx_timeout, | |
4994 | .ndo_validate_addr = eth_validate_addr, | |
4995 | ||
4996 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
4997 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
4998 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
4999 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5000 | .ndo_poll_controller = e1000_netpoll, | |
5001 | #endif | |
5002 | }; | |
5003 | ||
bc7f75fa AK |
5004 | /** |
5005 | * e1000_probe - Device Initialization Routine | |
5006 | * @pdev: PCI device information struct | |
5007 | * @ent: entry in e1000_pci_tbl | |
5008 | * | |
5009 | * Returns 0 on success, negative on failure | |
5010 | * | |
5011 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
5012 | * The OS initialization, configuring of the adapter private structure, | |
5013 | * and a hardware reset occur. | |
5014 | **/ | |
5015 | static int __devinit e1000_probe(struct pci_dev *pdev, | |
5016 | const struct pci_device_id *ent) | |
5017 | { | |
5018 | struct net_device *netdev; | |
5019 | struct e1000_adapter *adapter; | |
5020 | struct e1000_hw *hw; | |
5021 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
f47e81fc BB |
5022 | resource_size_t mmio_start, mmio_len; |
5023 | resource_size_t flash_start, flash_len; | |
bc7f75fa AK |
5024 | |
5025 | static int cards_found; | |
5026 | int i, err, pci_using_dac; | |
5027 | u16 eeprom_data = 0; | |
5028 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
5029 | ||
1eae4eb2 | 5030 | e1000e_disable_l1aspm(pdev); |
6e4f6f6b | 5031 | |
f0f422e5 | 5032 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
5033 | if (err) |
5034 | return err; | |
5035 | ||
5036 | pci_using_dac = 0; | |
6a35528a | 5037 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
bc7f75fa | 5038 | if (!err) { |
6a35528a | 5039 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
bc7f75fa AK |
5040 | if (!err) |
5041 | pci_using_dac = 1; | |
5042 | } else { | |
284901a9 | 5043 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
bc7f75fa AK |
5044 | if (err) { |
5045 | err = pci_set_consistent_dma_mask(pdev, | |
284901a9 | 5046 | DMA_BIT_MASK(32)); |
bc7f75fa AK |
5047 | if (err) { |
5048 | dev_err(&pdev->dev, "No usable DMA " | |
5049 | "configuration, aborting\n"); | |
5050 | goto err_dma; | |
5051 | } | |
5052 | } | |
5053 | } | |
5054 | ||
e8de1481 | 5055 | err = pci_request_selected_regions_exclusive(pdev, |
f0f422e5 BA |
5056 | pci_select_bars(pdev, IORESOURCE_MEM), |
5057 | e1000e_driver_name); | |
bc7f75fa AK |
5058 | if (err) |
5059 | goto err_pci_reg; | |
5060 | ||
68eac460 | 5061 | /* AER (Advanced Error Reporting) hooks */ |
19d5afd4 | 5062 | pci_enable_pcie_error_reporting(pdev); |
68eac460 | 5063 | |
bc7f75fa | 5064 | pci_set_master(pdev); |
438b365a BA |
5065 | /* PCI config space info */ |
5066 | err = pci_save_state(pdev); | |
5067 | if (err) | |
5068 | goto err_alloc_etherdev; | |
bc7f75fa AK |
5069 | |
5070 | err = -ENOMEM; | |
5071 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
5072 | if (!netdev) | |
5073 | goto err_alloc_etherdev; | |
5074 | ||
bc7f75fa AK |
5075 | SET_NETDEV_DEV(netdev, &pdev->dev); |
5076 | ||
5077 | pci_set_drvdata(pdev, netdev); | |
5078 | adapter = netdev_priv(netdev); | |
5079 | hw = &adapter->hw; | |
5080 | adapter->netdev = netdev; | |
5081 | adapter->pdev = pdev; | |
5082 | adapter->ei = ei; | |
5083 | adapter->pba = ei->pba; | |
5084 | adapter->flags = ei->flags; | |
eb7c3adb | 5085 | adapter->flags2 = ei->flags2; |
bc7f75fa AK |
5086 | adapter->hw.adapter = adapter; |
5087 | adapter->hw.mac.type = ei->mac; | |
2adc55c9 | 5088 | adapter->max_hw_frame_size = ei->max_hw_frame_size; |
bc7f75fa AK |
5089 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; |
5090 | ||
5091 | mmio_start = pci_resource_start(pdev, 0); | |
5092 | mmio_len = pci_resource_len(pdev, 0); | |
5093 | ||
5094 | err = -EIO; | |
5095 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
5096 | if (!adapter->hw.hw_addr) | |
5097 | goto err_ioremap; | |
5098 | ||
5099 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
5100 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
5101 | flash_start = pci_resource_start(pdev, 1); | |
5102 | flash_len = pci_resource_len(pdev, 1); | |
5103 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
5104 | if (!adapter->hw.flash_address) | |
5105 | goto err_flashmap; | |
5106 | } | |
5107 | ||
5108 | /* construct the net_device struct */ | |
651c2466 | 5109 | netdev->netdev_ops = &e1000e_netdev_ops; |
bc7f75fa | 5110 | e1000e_set_ethtool_ops(netdev); |
bc7f75fa AK |
5111 | netdev->watchdog_timeo = 5 * HZ; |
5112 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); | |
bc7f75fa AK |
5113 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
5114 | ||
5115 | netdev->mem_start = mmio_start; | |
5116 | netdev->mem_end = mmio_start + mmio_len; | |
5117 | ||
5118 | adapter->bd_number = cards_found++; | |
5119 | ||
4662e82b BA |
5120 | e1000e_check_options(adapter); |
5121 | ||
bc7f75fa AK |
5122 | /* setup adapter struct */ |
5123 | err = e1000_sw_init(adapter); | |
5124 | if (err) | |
5125 | goto err_sw_init; | |
5126 | ||
5127 | err = -EIO; | |
5128 | ||
5129 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
5130 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
5131 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
5132 | ||
69e3fd8c | 5133 | err = ei->get_variants(adapter); |
bc7f75fa AK |
5134 | if (err) |
5135 | goto err_hw_init; | |
5136 | ||
4a770358 BA |
5137 | if ((adapter->flags & FLAG_IS_ICH) && |
5138 | (adapter->flags & FLAG_READ_ONLY_NVM)) | |
5139 | e1000e_write_protect_nvm_ich8lan(&adapter->hw); | |
5140 | ||
bc7f75fa AK |
5141 | hw->mac.ops.get_bus_info(&adapter->hw); |
5142 | ||
318a94d6 | 5143 | adapter->hw.phy.autoneg_wait_to_complete = 0; |
bc7f75fa AK |
5144 | |
5145 | /* Copper options */ | |
318a94d6 | 5146 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
bc7f75fa AK |
5147 | adapter->hw.phy.mdix = AUTO_ALL_MODES; |
5148 | adapter->hw.phy.disable_polarity_correction = 0; | |
5149 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
5150 | } | |
5151 | ||
5152 | if (e1000_check_reset_block(&adapter->hw)) | |
44defeb3 | 5153 | e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
bc7f75fa AK |
5154 | |
5155 | netdev->features = NETIF_F_SG | | |
5156 | NETIF_F_HW_CSUM | | |
5157 | NETIF_F_HW_VLAN_TX | | |
5158 | NETIF_F_HW_VLAN_RX; | |
5159 | ||
5160 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
5161 | netdev->features |= NETIF_F_HW_VLAN_FILTER; | |
5162 | ||
5163 | netdev->features |= NETIF_F_TSO; | |
5164 | netdev->features |= NETIF_F_TSO6; | |
5165 | ||
a5136e23 JK |
5166 | netdev->vlan_features |= NETIF_F_TSO; |
5167 | netdev->vlan_features |= NETIF_F_TSO6; | |
5168 | netdev->vlan_features |= NETIF_F_HW_CSUM; | |
5169 | netdev->vlan_features |= NETIF_F_SG; | |
5170 | ||
bc7f75fa AK |
5171 | if (pci_using_dac) |
5172 | netdev->features |= NETIF_F_HIGHDMA; | |
5173 | ||
bc7f75fa AK |
5174 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
5175 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
5176 | ||
ad68076e BA |
5177 | /* |
5178 | * before reading the NVM, reset the controller to | |
5179 | * put the device in a known good starting state | |
5180 | */ | |
bc7f75fa AK |
5181 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
5182 | ||
5183 | /* | |
5184 | * systems with ASPM and others may see the checksum fail on the first | |
5185 | * attempt. Let's give it a few tries | |
5186 | */ | |
5187 | for (i = 0;; i++) { | |
5188 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
5189 | break; | |
5190 | if (i == 2) { | |
44defeb3 | 5191 | e_err("The NVM Checksum Is Not Valid\n"); |
bc7f75fa AK |
5192 | err = -EIO; |
5193 | goto err_eeprom; | |
5194 | } | |
5195 | } | |
5196 | ||
10aa4c04 AK |
5197 | e1000_eeprom_checks(adapter); |
5198 | ||
608f8a0d | 5199 | /* copy the MAC address */ |
bc7f75fa | 5200 | if (e1000e_read_mac_addr(&adapter->hw)) |
44defeb3 | 5201 | e_err("NVM Read Error while reading MAC address\n"); |
bc7f75fa AK |
5202 | |
5203 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
5204 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
5205 | ||
5206 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
7c510e4b | 5207 | e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
bc7f75fa AK |
5208 | err = -EIO; |
5209 | goto err_eeprom; | |
5210 | } | |
5211 | ||
5212 | init_timer(&adapter->watchdog_timer); | |
5213 | adapter->watchdog_timer.function = &e1000_watchdog; | |
5214 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
5215 | ||
5216 | init_timer(&adapter->phy_info_timer); | |
5217 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
5218 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
5219 | ||
5220 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
5221 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
a8f88ff5 JB |
5222 | INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
5223 | INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); | |
41cec6f1 | 5224 | INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
bc7f75fa | 5225 | |
bc7f75fa AK |
5226 | /* Initialize link parameters. User can change them with ethtool */ |
5227 | adapter->hw.mac.autoneg = 1; | |
309af40b | 5228 | adapter->fc_autoneg = 1; |
5c48ef3e BA |
5229 | adapter->hw.fc.requested_mode = e1000_fc_default; |
5230 | adapter->hw.fc.current_mode = e1000_fc_default; | |
bc7f75fa AK |
5231 | adapter->hw.phy.autoneg_advertised = 0x2f; |
5232 | ||
5233 | /* ring size defaults */ | |
5234 | adapter->rx_ring->count = 256; | |
5235 | adapter->tx_ring->count = 256; | |
5236 | ||
5237 | /* | |
5238 | * Initial Wake on LAN setting - If APM wake is enabled in | |
5239 | * the EEPROM, enable the ACPI Magic Packet filter | |
5240 | */ | |
5241 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
5242 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
5243 | eeprom_data = er32(WUC); | |
5244 | eeprom_apme_mask = E1000_WUC_APME; | |
a4f58f54 BA |
5245 | if (eeprom_data & E1000_WUC_PHY_WAKE) |
5246 | adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; | |
bc7f75fa AK |
5247 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
5248 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
5249 | (adapter->hw.bus.func == 1)) | |
5250 | e1000_read_nvm(&adapter->hw, | |
5251 | NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
5252 | else | |
5253 | e1000_read_nvm(&adapter->hw, | |
5254 | NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
5255 | } | |
5256 | ||
5257 | /* fetch WoL from EEPROM */ | |
5258 | if (eeprom_data & eeprom_apme_mask) | |
5259 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
5260 | ||
5261 | /* | |
5262 | * now that we have the eeprom settings, apply the special cases | |
5263 | * where the eeprom may be wrong or the board simply won't support | |
5264 | * wake on lan on a particular port | |
5265 | */ | |
5266 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
5267 | adapter->eeprom_wol = 0; | |
5268 | ||
5269 | /* initialize the wol settings based on the eeprom settings */ | |
5270 | adapter->wol = adapter->eeprom_wol; | |
6ff68026 | 5271 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
bc7f75fa | 5272 | |
84527590 BA |
5273 | /* save off EEPROM version number */ |
5274 | e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); | |
5275 | ||
bc7f75fa AK |
5276 | /* reset the hardware with the new settings */ |
5277 | e1000e_reset(adapter); | |
5278 | ||
ad68076e BA |
5279 | /* |
5280 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5281 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5282 | * under the control of the driver. |
5283 | */ | |
c43bc57e | 5284 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5285 | e1000_get_hw_control(adapter); |
5286 | ||
bc7f75fa AK |
5287 | strcpy(netdev->name, "eth%d"); |
5288 | err = register_netdev(netdev); | |
5289 | if (err) | |
5290 | goto err_register; | |
5291 | ||
9c563d20 JB |
5292 | /* carrier off reporting is important to ethtool even BEFORE open */ |
5293 | netif_carrier_off(netdev); | |
5294 | ||
bc7f75fa AK |
5295 | e1000_print_device_info(adapter); |
5296 | ||
23606cf5 RW |
5297 | if (pci_dev_run_wake(pdev)) { |
5298 | pm_runtime_set_active(&pdev->dev); | |
5299 | pm_runtime_enable(&pdev->dev); | |
5300 | } | |
5301 | pm_schedule_suspend(&pdev->dev, MSEC_PER_SEC); | |
5302 | ||
bc7f75fa AK |
5303 | return 0; |
5304 | ||
5305 | err_register: | |
c43bc57e JB |
5306 | if (!(adapter->flags & FLAG_HAS_AMT)) |
5307 | e1000_release_hw_control(adapter); | |
bc7f75fa AK |
5308 | err_eeprom: |
5309 | if (!e1000_check_reset_block(&adapter->hw)) | |
5310 | e1000_phy_hw_reset(&adapter->hw); | |
c43bc57e | 5311 | err_hw_init: |
bc7f75fa | 5312 | |
bc7f75fa AK |
5313 | kfree(adapter->tx_ring); |
5314 | kfree(adapter->rx_ring); | |
5315 | err_sw_init: | |
c43bc57e JB |
5316 | if (adapter->hw.flash_address) |
5317 | iounmap(adapter->hw.flash_address); | |
e82f54ba | 5318 | e1000e_reset_interrupt_capability(adapter); |
c43bc57e | 5319 | err_flashmap: |
bc7f75fa AK |
5320 | iounmap(adapter->hw.hw_addr); |
5321 | err_ioremap: | |
5322 | free_netdev(netdev); | |
5323 | err_alloc_etherdev: | |
f0f422e5 BA |
5324 | pci_release_selected_regions(pdev, |
5325 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5326 | err_pci_reg: |
5327 | err_dma: | |
5328 | pci_disable_device(pdev); | |
5329 | return err; | |
5330 | } | |
5331 | ||
5332 | /** | |
5333 | * e1000_remove - Device Removal Routine | |
5334 | * @pdev: PCI device information struct | |
5335 | * | |
5336 | * e1000_remove is called by the PCI subsystem to alert the driver | |
5337 | * that it should release a PCI device. The could be caused by a | |
5338 | * Hot-Plug event, or because the driver is going to be removed from | |
5339 | * memory. | |
5340 | **/ | |
5341 | static void __devexit e1000_remove(struct pci_dev *pdev) | |
5342 | { | |
5343 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5344 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 RW |
5345 | bool down = test_bit(__E1000_DOWN, &adapter->state); |
5346 | ||
5347 | pm_runtime_get_sync(&pdev->dev); | |
bc7f75fa | 5348 | |
ad68076e BA |
5349 | /* |
5350 | * flush_scheduled work may reschedule our watchdog task, so | |
5351 | * explicitly disable watchdog tasks from being rescheduled | |
5352 | */ | |
23606cf5 RW |
5353 | if (!down) |
5354 | set_bit(__E1000_DOWN, &adapter->state); | |
bc7f75fa AK |
5355 | del_timer_sync(&adapter->watchdog_timer); |
5356 | del_timer_sync(&adapter->phy_info_timer); | |
5357 | ||
41cec6f1 BA |
5358 | cancel_work_sync(&adapter->reset_task); |
5359 | cancel_work_sync(&adapter->watchdog_task); | |
5360 | cancel_work_sync(&adapter->downshift_task); | |
5361 | cancel_work_sync(&adapter->update_phy_task); | |
5362 | cancel_work_sync(&adapter->print_hang_task); | |
bc7f75fa AK |
5363 | flush_scheduled_work(); |
5364 | ||
17f208de BA |
5365 | if (!(netdev->flags & IFF_UP)) |
5366 | e1000_power_down_phy(adapter); | |
5367 | ||
23606cf5 RW |
5368 | /* Don't lie to e1000_close() down the road. */ |
5369 | if (!down) | |
5370 | clear_bit(__E1000_DOWN, &adapter->state); | |
17f208de BA |
5371 | unregister_netdev(netdev); |
5372 | ||
23606cf5 RW |
5373 | if (pci_dev_run_wake(pdev)) { |
5374 | pm_runtime_disable(&pdev->dev); | |
5375 | pm_runtime_set_suspended(&pdev->dev); | |
5376 | } | |
5377 | pm_runtime_put_noidle(&pdev->dev); | |
5378 | ||
ad68076e BA |
5379 | /* |
5380 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
5381 | * would have already happened in close and is redundant. | |
5382 | */ | |
bc7f75fa AK |
5383 | e1000_release_hw_control(adapter); |
5384 | ||
4662e82b | 5385 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
5386 | kfree(adapter->tx_ring); |
5387 | kfree(adapter->rx_ring); | |
5388 | ||
5389 | iounmap(adapter->hw.hw_addr); | |
5390 | if (adapter->hw.flash_address) | |
5391 | iounmap(adapter->hw.flash_address); | |
f0f422e5 BA |
5392 | pci_release_selected_regions(pdev, |
5393 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5394 | |
5395 | free_netdev(netdev); | |
5396 | ||
111b9dc5 | 5397 | /* AER disable */ |
19d5afd4 | 5398 | pci_disable_pcie_error_reporting(pdev); |
111b9dc5 | 5399 | |
bc7f75fa AK |
5400 | pci_disable_device(pdev); |
5401 | } | |
5402 | ||
5403 | /* PCI Error Recovery (ERS) */ | |
5404 | static struct pci_error_handlers e1000_err_handler = { | |
5405 | .error_detected = e1000_io_error_detected, | |
5406 | .slot_reset = e1000_io_slot_reset, | |
5407 | .resume = e1000_io_resume, | |
5408 | }; | |
5409 | ||
a3aa1884 | 5410 | static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
bc7f75fa AK |
5411 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
5412 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
5413 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
5414 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, | |
5415 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, | |
5416 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
040babf9 AK |
5417 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
5418 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, | |
5419 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, | |
ad68076e | 5420 | |
bc7f75fa AK |
5421 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
5422 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
5423 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
5424 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
ad68076e | 5425 | |
bc7f75fa AK |
5426 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
5427 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
5428 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
ad68076e | 5429 | |
4662e82b | 5430 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
bef28b11 | 5431 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
8c81c9c3 | 5432 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
4662e82b | 5433 | |
bc7f75fa AK |
5434 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
5435 | board_80003es2lan }, | |
5436 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
5437 | board_80003es2lan }, | |
5438 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
5439 | board_80003es2lan }, | |
5440 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
5441 | board_80003es2lan }, | |
ad68076e | 5442 | |
bc7f75fa AK |
5443 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
5444 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
5445 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
5446 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
5447 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
5448 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
5449 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
9e135a2e | 5450 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
ad68076e | 5451 | |
bc7f75fa AK |
5452 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
5453 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
5454 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
5455 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
5456 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
2f15f9d6 | 5457 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
97ac8cae BA |
5458 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
5459 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, | |
5460 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, | |
5461 | ||
5462 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, | |
5463 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, | |
5464 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, | |
bc7f75fa | 5465 | |
f4187b56 BA |
5466 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
5467 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, | |
5468 | ||
a4f58f54 BA |
5469 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
5470 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, | |
5471 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, | |
5472 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, | |
5473 | ||
bc7f75fa AK |
5474 | { } /* terminate list */ |
5475 | }; | |
5476 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
5477 | ||
e50208a0 | 5478 | #ifdef CONFIG_PM |
23606cf5 RW |
5479 | static const struct dev_pm_ops e1000_pm_ops = { |
5480 | .suspend = e1000_suspend, | |
5481 | .resume = e1000_resume, | |
5482 | .freeze = e1000_suspend, | |
5483 | .thaw = e1000_resume, | |
5484 | .poweroff = e1000_suspend, | |
5485 | .restore = e1000_resume, | |
5486 | .runtime_suspend = e1000_runtime_suspend, | |
5487 | .runtime_resume = e1000_runtime_resume, | |
5488 | .runtime_idle = e1000_idle, | |
5489 | }; | |
e50208a0 | 5490 | #endif |
23606cf5 | 5491 | |
bc7f75fa AK |
5492 | /* PCI Device API Driver */ |
5493 | static struct pci_driver e1000_driver = { | |
5494 | .name = e1000e_driver_name, | |
5495 | .id_table = e1000_pci_tbl, | |
5496 | .probe = e1000_probe, | |
5497 | .remove = __devexit_p(e1000_remove), | |
5498 | #ifdef CONFIG_PM | |
23606cf5 | 5499 | .driver.pm = &e1000_pm_ops, |
bc7f75fa AK |
5500 | #endif |
5501 | .shutdown = e1000_shutdown, | |
5502 | .err_handler = &e1000_err_handler | |
5503 | }; | |
5504 | ||
5505 | /** | |
5506 | * e1000_init_module - Driver Registration Routine | |
5507 | * | |
5508 | * e1000_init_module is the first routine called when the driver is | |
5509 | * loaded. All it does is register with the PCI subsystem. | |
5510 | **/ | |
5511 | static int __init e1000_init_module(void) | |
5512 | { | |
5513 | int ret; | |
5514 | printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n", | |
5515 | e1000e_driver_name, e1000e_driver_version); | |
c7e54b1b | 5516 | printk(KERN_INFO "%s: Copyright (c) 1999 - 2009 Intel Corporation.\n", |
bc7f75fa AK |
5517 | e1000e_driver_name); |
5518 | ret = pci_register_driver(&e1000_driver); | |
53ec5498 | 5519 | |
bc7f75fa AK |
5520 | return ret; |
5521 | } | |
5522 | module_init(e1000_init_module); | |
5523 | ||
5524 | /** | |
5525 | * e1000_exit_module - Driver Exit Cleanup Routine | |
5526 | * | |
5527 | * e1000_exit_module is called just before the driver is removed | |
5528 | * from memory. | |
5529 | **/ | |
5530 | static void __exit e1000_exit_module(void) | |
5531 | { | |
5532 | pci_unregister_driver(&e1000_driver); | |
5533 | } | |
5534 | module_exit(e1000_exit_module); | |
5535 | ||
5536 | ||
5537 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
5538 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
5539 | MODULE_LICENSE("GPL"); | |
5540 | MODULE_VERSION(DRV_VERSION); | |
5541 | ||
5542 | /* e1000_main.c */ |