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Auke Kokbc7f75f2007-09-17 12:30:59 -07001/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
Bruce Allanad680762008-03-28 09:15:03 -07004 Copyright(c) 1999 - 2008 Intel Corporation.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005
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>
Bruce Allan97ac8ca2008-04-29 09:16:05 -070046#include <linux/pm_qos_params.h>
Auke Kokbc7f75f2007-09-17 12:30:59 -070047
48#include "e1000.h"
49
Jesse Brandeburg6f92a6a2008-10-02 16:33:45 -070050#define DRV_VERSION "0.3.3.3-k6"
Auke Kokbc7f75f2007-09-17 12:30:59 -070051char e1000e_driver_name[] = "e1000e";
52const char e1000e_driver_version[] = DRV_VERSION;
53
54static const struct e1000_info *e1000_info_tbl[] = {
55 [board_82571] = &e1000_82571_info,
56 [board_82572] = &e1000_82572_info,
57 [board_82573] = &e1000_82573_info,
Bruce Allan4662e822008-08-26 18:37:06 -070058 [board_82574] = &e1000_82574_info,
Auke Kokbc7f75f2007-09-17 12:30:59 -070059 [board_80003es2lan] = &e1000_es2_info,
60 [board_ich8lan] = &e1000_ich8_info,
61 [board_ich9lan] = &e1000_ich9_info,
Bruce Allanf4187b52008-08-26 18:36:50 -070062 [board_ich10lan] = &e1000_ich10_info,
Auke Kokbc7f75f2007-09-17 12:30:59 -070063};
64
65#ifdef DEBUG
66/**
67 * e1000_get_hw_dev_name - return device name string
68 * used by hardware layer to print debugging information
69 **/
70char *e1000e_get_hw_dev_name(struct e1000_hw *hw)
71{
Auke Kok589c0852007-10-04 11:38:43 -070072 return hw->adapter->netdev->name;
Auke Kokbc7f75f2007-09-17 12:30:59 -070073}
74#endif
75
76/**
77 * e1000_desc_unused - calculate if we have unused descriptors
78 **/
79static int e1000_desc_unused(struct e1000_ring *ring)
80{
81 if (ring->next_to_clean > ring->next_to_use)
82 return ring->next_to_clean - ring->next_to_use - 1;
83
84 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
85}
86
87/**
Bruce Allanad680762008-03-28 09:15:03 -070088 * e1000_receive_skb - helper function to handle Rx indications
Auke Kokbc7f75f2007-09-17 12:30:59 -070089 * @adapter: board private structure
90 * @status: descriptor status field as written by hardware
91 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
92 * @skb: pointer to sk_buff to be indicated to stack
93 **/
94static void e1000_receive_skb(struct e1000_adapter *adapter,
95 struct net_device *netdev,
96 struct sk_buff *skb,
Al Viroa39fe742007-12-11 19:50:34 +000097 u8 status, __le16 vlan)
Auke Kokbc7f75f2007-09-17 12:30:59 -070098{
99 skb->protocol = eth_type_trans(skb, netdev);
100
101 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
102 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
Patrick McHardy38b22192008-07-06 20:48:41 -0700103 le16_to_cpu(vlan));
Auke Kokbc7f75f2007-09-17 12:30:59 -0700104 else
105 netif_receive_skb(skb);
106
107 netdev->last_rx = jiffies;
108}
109
110/**
111 * e1000_rx_checksum - Receive Checksum Offload for 82543
112 * @adapter: board private structure
113 * @status_err: receive descriptor status and error fields
114 * @csum: receive descriptor csum field
115 * @sk_buff: socket buffer with received data
116 **/
117static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
118 u32 csum, struct sk_buff *skb)
119{
120 u16 status = (u16)status_err;
121 u8 errors = (u8)(status_err >> 24);
122 skb->ip_summed = CHECKSUM_NONE;
123
124 /* Ignore Checksum bit is set */
125 if (status & E1000_RXD_STAT_IXSM)
126 return;
127 /* TCP/UDP checksum error bit is set */
128 if (errors & E1000_RXD_ERR_TCPE) {
129 /* let the stack verify checksum errors */
130 adapter->hw_csum_err++;
131 return;
132 }
133
134 /* TCP/UDP Checksum has not been calculated */
135 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
136 return;
137
138 /* It must be a TCP or UDP packet with a valid checksum */
139 if (status & E1000_RXD_STAT_TCPCS) {
140 /* TCP checksum is good */
141 skb->ip_summed = CHECKSUM_UNNECESSARY;
142 } else {
Bruce Allanad680762008-03-28 09:15:03 -0700143 /*
144 * IP fragment with UDP payload
145 * Hardware complements the payload checksum, so we undo it
Auke Kokbc7f75f2007-09-17 12:30:59 -0700146 * and then put the value in host order for further stack use.
147 */
Al Viroa39fe742007-12-11 19:50:34 +0000148 __sum16 sum = (__force __sum16)htons(csum);
149 skb->csum = csum_unfold(~sum);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700150 skb->ip_summed = CHECKSUM_COMPLETE;
151 }
152 adapter->hw_csum_good++;
153}
154
155/**
156 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
157 * @adapter: address of board private structure
158 **/
159static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
160 int cleaned_count)
161{
162 struct net_device *netdev = adapter->netdev;
163 struct pci_dev *pdev = adapter->pdev;
164 struct e1000_ring *rx_ring = adapter->rx_ring;
165 struct e1000_rx_desc *rx_desc;
166 struct e1000_buffer *buffer_info;
167 struct sk_buff *skb;
168 unsigned int i;
169 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
170
171 i = rx_ring->next_to_use;
172 buffer_info = &rx_ring->buffer_info[i];
173
174 while (cleaned_count--) {
175 skb = buffer_info->skb;
176 if (skb) {
177 skb_trim(skb, 0);
178 goto map_skb;
179 }
180
181 skb = netdev_alloc_skb(netdev, bufsz);
182 if (!skb) {
183 /* Better luck next round */
184 adapter->alloc_rx_buff_failed++;
185 break;
186 }
187
Bruce Allanad680762008-03-28 09:15:03 -0700188 /*
189 * Make buffer alignment 2 beyond a 16 byte boundary
Auke Kokbc7f75f2007-09-17 12:30:59 -0700190 * this will result in a 16 byte aligned IP header after
191 * the 14 byte MAC header is removed
192 */
193 skb_reserve(skb, NET_IP_ALIGN);
194
195 buffer_info->skb = skb;
196map_skb:
197 buffer_info->dma = pci_map_single(pdev, skb->data,
198 adapter->rx_buffer_len,
199 PCI_DMA_FROMDEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -0700200 if (pci_dma_mapping_error(pdev, buffer_info->dma)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700201 dev_err(&pdev->dev, "RX DMA map failed\n");
202 adapter->rx_dma_failed++;
203 break;
204 }
205
206 rx_desc = E1000_RX_DESC(*rx_ring, i);
207 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
208
209 i++;
210 if (i == rx_ring->count)
211 i = 0;
212 buffer_info = &rx_ring->buffer_info[i];
213 }
214
215 if (rx_ring->next_to_use != i) {
216 rx_ring->next_to_use = i;
217 if (i-- == 0)
218 i = (rx_ring->count - 1);
219
Bruce Allanad680762008-03-28 09:15:03 -0700220 /*
221 * Force memory writes to complete before letting h/w
Auke Kokbc7f75f2007-09-17 12:30:59 -0700222 * know there are new descriptors to fetch. (Only
223 * applicable for weak-ordered memory model archs,
Bruce Allanad680762008-03-28 09:15:03 -0700224 * such as IA-64).
225 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700226 wmb();
227 writel(i, adapter->hw.hw_addr + rx_ring->tail);
228 }
229}
230
231/**
232 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
233 * @adapter: address of board private structure
234 **/
235static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
236 int cleaned_count)
237{
238 struct net_device *netdev = adapter->netdev;
239 struct pci_dev *pdev = adapter->pdev;
240 union e1000_rx_desc_packet_split *rx_desc;
241 struct e1000_ring *rx_ring = adapter->rx_ring;
242 struct e1000_buffer *buffer_info;
243 struct e1000_ps_page *ps_page;
244 struct sk_buff *skb;
245 unsigned int i, j;
246
247 i = rx_ring->next_to_use;
248 buffer_info = &rx_ring->buffer_info[i];
249
250 while (cleaned_count--) {
251 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
252
253 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -0700254 ps_page = &buffer_info->ps_pages[j];
255 if (j >= adapter->rx_ps_pages) {
256 /* all unused desc entries get hw null ptr */
Al Viroa39fe742007-12-11 19:50:34 +0000257 rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0);
Auke Kok47f44e42007-10-25 13:57:44 -0700258 continue;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700259 }
Auke Kok47f44e42007-10-25 13:57:44 -0700260 if (!ps_page->page) {
261 ps_page->page = alloc_page(GFP_ATOMIC);
262 if (!ps_page->page) {
263 adapter->alloc_rx_buff_failed++;
264 goto no_buffers;
265 }
266 ps_page->dma = pci_map_page(pdev,
267 ps_page->page,
268 0, PAGE_SIZE,
269 PCI_DMA_FROMDEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -0700270 if (pci_dma_mapping_error(pdev, ps_page->dma)) {
Auke Kok47f44e42007-10-25 13:57:44 -0700271 dev_err(&adapter->pdev->dev,
272 "RX DMA page map failed\n");
273 adapter->rx_dma_failed++;
274 goto no_buffers;
275 }
276 }
277 /*
278 * Refresh the desc even if buffer_addrs
279 * didn't change because each write-back
280 * erases this info.
281 */
282 rx_desc->read.buffer_addr[j+1] =
283 cpu_to_le64(ps_page->dma);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700284 }
285
286 skb = netdev_alloc_skb(netdev,
287 adapter->rx_ps_bsize0 + NET_IP_ALIGN);
288
289 if (!skb) {
290 adapter->alloc_rx_buff_failed++;
291 break;
292 }
293
Bruce Allanad680762008-03-28 09:15:03 -0700294 /*
295 * Make buffer alignment 2 beyond a 16 byte boundary
Auke Kokbc7f75f2007-09-17 12:30:59 -0700296 * this will result in a 16 byte aligned IP header after
297 * the 14 byte MAC header is removed
298 */
299 skb_reserve(skb, NET_IP_ALIGN);
300
301 buffer_info->skb = skb;
302 buffer_info->dma = pci_map_single(pdev, skb->data,
303 adapter->rx_ps_bsize0,
304 PCI_DMA_FROMDEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -0700305 if (pci_dma_mapping_error(pdev, buffer_info->dma)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700306 dev_err(&pdev->dev, "RX DMA map failed\n");
307 adapter->rx_dma_failed++;
308 /* cleanup skb */
309 dev_kfree_skb_any(skb);
310 buffer_info->skb = NULL;
311 break;
312 }
313
314 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
315
316 i++;
317 if (i == rx_ring->count)
318 i = 0;
319 buffer_info = &rx_ring->buffer_info[i];
320 }
321
322no_buffers:
323 if (rx_ring->next_to_use != i) {
324 rx_ring->next_to_use = i;
325
326 if (!(i--))
327 i = (rx_ring->count - 1);
328
Bruce Allanad680762008-03-28 09:15:03 -0700329 /*
330 * Force memory writes to complete before letting h/w
Auke Kokbc7f75f2007-09-17 12:30:59 -0700331 * know there are new descriptors to fetch. (Only
332 * applicable for weak-ordered memory model archs,
Bruce Allanad680762008-03-28 09:15:03 -0700333 * such as IA-64).
334 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700335 wmb();
Bruce Allanad680762008-03-28 09:15:03 -0700336 /*
337 * Hardware increments by 16 bytes, but packet split
Auke Kokbc7f75f2007-09-17 12:30:59 -0700338 * descriptors are 32 bytes...so we increment tail
339 * twice as much.
340 */
341 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
342 }
343}
344
345/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700346 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
347 * @adapter: address of board private structure
348 * @rx_ring: pointer to receive ring structure
349 * @cleaned_count: number of buffers to allocate this pass
350 **/
351
352static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
353 int cleaned_count)
354{
355 struct net_device *netdev = adapter->netdev;
356 struct pci_dev *pdev = adapter->pdev;
357 struct e1000_rx_desc *rx_desc;
358 struct e1000_ring *rx_ring = adapter->rx_ring;
359 struct e1000_buffer *buffer_info;
360 struct sk_buff *skb;
361 unsigned int i;
362 unsigned int bufsz = 256 -
363 16 /* for skb_reserve */ -
364 NET_IP_ALIGN;
365
366 i = rx_ring->next_to_use;
367 buffer_info = &rx_ring->buffer_info[i];
368
369 while (cleaned_count--) {
370 skb = buffer_info->skb;
371 if (skb) {
372 skb_trim(skb, 0);
373 goto check_page;
374 }
375
376 skb = netdev_alloc_skb(netdev, bufsz);
377 if (unlikely(!skb)) {
378 /* Better luck next round */
379 adapter->alloc_rx_buff_failed++;
380 break;
381 }
382
383 /* Make buffer alignment 2 beyond a 16 byte boundary
384 * this will result in a 16 byte aligned IP header after
385 * the 14 byte MAC header is removed
386 */
387 skb_reserve(skb, NET_IP_ALIGN);
388
389 buffer_info->skb = skb;
390check_page:
391 /* allocate a new page if necessary */
392 if (!buffer_info->page) {
393 buffer_info->page = alloc_page(GFP_ATOMIC);
394 if (unlikely(!buffer_info->page)) {
395 adapter->alloc_rx_buff_failed++;
396 break;
397 }
398 }
399
400 if (!buffer_info->dma)
401 buffer_info->dma = pci_map_page(pdev,
402 buffer_info->page, 0,
403 PAGE_SIZE,
404 PCI_DMA_FROMDEVICE);
405
406 rx_desc = E1000_RX_DESC(*rx_ring, i);
407 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
408
409 if (unlikely(++i == rx_ring->count))
410 i = 0;
411 buffer_info = &rx_ring->buffer_info[i];
412 }
413
414 if (likely(rx_ring->next_to_use != i)) {
415 rx_ring->next_to_use = i;
416 if (unlikely(i-- == 0))
417 i = (rx_ring->count - 1);
418
419 /* Force memory writes to complete before letting h/w
420 * know there are new descriptors to fetch. (Only
421 * applicable for weak-ordered memory model archs,
422 * such as IA-64). */
423 wmb();
424 writel(i, adapter->hw.hw_addr + rx_ring->tail);
425 }
426}
427
428/**
Auke Kokbc7f75f2007-09-17 12:30:59 -0700429 * e1000_clean_rx_irq - Send received data up the network stack; legacy
430 * @adapter: board private structure
431 *
432 * the return value indicates whether actual cleaning was done, there
433 * is no guarantee that everything was cleaned
434 **/
435static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
436 int *work_done, int work_to_do)
437{
438 struct net_device *netdev = adapter->netdev;
439 struct pci_dev *pdev = adapter->pdev;
440 struct e1000_ring *rx_ring = adapter->rx_ring;
441 struct e1000_rx_desc *rx_desc, *next_rxd;
442 struct e1000_buffer *buffer_info, *next_buffer;
443 u32 length;
444 unsigned int i;
445 int cleaned_count = 0;
446 bool cleaned = 0;
447 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
448
449 i = rx_ring->next_to_clean;
450 rx_desc = E1000_RX_DESC(*rx_ring, i);
451 buffer_info = &rx_ring->buffer_info[i];
452
453 while (rx_desc->status & E1000_RXD_STAT_DD) {
454 struct sk_buff *skb;
455 u8 status;
456
457 if (*work_done >= work_to_do)
458 break;
459 (*work_done)++;
460
461 status = rx_desc->status;
462 skb = buffer_info->skb;
463 buffer_info->skb = NULL;
464
465 prefetch(skb->data - NET_IP_ALIGN);
466
467 i++;
468 if (i == rx_ring->count)
469 i = 0;
470 next_rxd = E1000_RX_DESC(*rx_ring, i);
471 prefetch(next_rxd);
472
473 next_buffer = &rx_ring->buffer_info[i];
474
475 cleaned = 1;
476 cleaned_count++;
477 pci_unmap_single(pdev,
478 buffer_info->dma,
479 adapter->rx_buffer_len,
480 PCI_DMA_FROMDEVICE);
481 buffer_info->dma = 0;
482
483 length = le16_to_cpu(rx_desc->length);
484
485 /* !EOP means multiple descriptors were used to store a single
486 * packet, also make sure the frame isn't just CRC only */
487 if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) {
488 /* All receives must fit into a single buffer */
Jeff Kirsher44defeb2008-08-04 17:20:41 -0700489 e_dbg("%s: Receive packet consumed multiple buffers\n",
490 netdev->name);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700491 /* recycle */
492 buffer_info->skb = skb;
493 goto next_desc;
494 }
495
496 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
497 /* recycle */
498 buffer_info->skb = skb;
499 goto next_desc;
500 }
501
Auke Kokbc7f75f2007-09-17 12:30:59 -0700502 total_rx_bytes += length;
503 total_rx_packets++;
504
Bruce Allanad680762008-03-28 09:15:03 -0700505 /*
506 * code added for copybreak, this should improve
Auke Kokbc7f75f2007-09-17 12:30:59 -0700507 * performance for small packets with large amounts
Bruce Allanad680762008-03-28 09:15:03 -0700508 * of reassembly being done in the stack
509 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700510 if (length < copybreak) {
511 struct sk_buff *new_skb =
512 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
513 if (new_skb) {
514 skb_reserve(new_skb, NET_IP_ALIGN);
Bruce Allan808ff672008-08-08 18:35:56 -0700515 skb_copy_to_linear_data_offset(new_skb,
516 -NET_IP_ALIGN,
517 (skb->data -
518 NET_IP_ALIGN),
519 (length +
520 NET_IP_ALIGN));
Auke Kokbc7f75f2007-09-17 12:30:59 -0700521 /* save the skb in buffer_info as good */
522 buffer_info->skb = skb;
523 skb = new_skb;
524 }
525 /* else just continue with the old one */
526 }
527 /* end copybreak code */
528 skb_put(skb, length);
529
530 /* Receive Checksum Offload */
531 e1000_rx_checksum(adapter,
532 (u32)(status) |
533 ((u32)(rx_desc->errors) << 24),
534 le16_to_cpu(rx_desc->csum), skb);
535
536 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
537
538next_desc:
539 rx_desc->status = 0;
540
541 /* return some buffers to hardware, one at a time is too slow */
542 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
543 adapter->alloc_rx_buf(adapter, cleaned_count);
544 cleaned_count = 0;
545 }
546
547 /* use prefetched values */
548 rx_desc = next_rxd;
549 buffer_info = next_buffer;
550 }
551 rx_ring->next_to_clean = i;
552
553 cleaned_count = e1000_desc_unused(rx_ring);
554 if (cleaned_count)
555 adapter->alloc_rx_buf(adapter, cleaned_count);
556
Auke Kokbc7f75f2007-09-17 12:30:59 -0700557 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700558 adapter->total_rx_packets += total_rx_packets;
Auke Kok41988692007-11-13 20:48:36 -0800559 adapter->net_stats.rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700560 adapter->net_stats.rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700561 return cleaned;
562}
563
Auke Kokbc7f75f2007-09-17 12:30:59 -0700564static void e1000_put_txbuf(struct e1000_adapter *adapter,
565 struct e1000_buffer *buffer_info)
566{
567 if (buffer_info->dma) {
568 pci_unmap_page(adapter->pdev, buffer_info->dma,
569 buffer_info->length, PCI_DMA_TODEVICE);
570 buffer_info->dma = 0;
571 }
572 if (buffer_info->skb) {
573 dev_kfree_skb_any(buffer_info->skb);
574 buffer_info->skb = NULL;
575 }
576}
577
578static void e1000_print_tx_hang(struct e1000_adapter *adapter)
579{
580 struct e1000_ring *tx_ring = adapter->tx_ring;
581 unsigned int i = tx_ring->next_to_clean;
582 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
583 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700584
585 /* detected Tx unit hang */
Jeff Kirsher44defeb2008-08-04 17:20:41 -0700586 e_err("Detected Tx Unit Hang:\n"
587 " TDH <%x>\n"
588 " TDT <%x>\n"
589 " next_to_use <%x>\n"
590 " next_to_clean <%x>\n"
591 "buffer_info[next_to_clean]:\n"
592 " time_stamp <%lx>\n"
593 " next_to_watch <%x>\n"
594 " jiffies <%lx>\n"
595 " next_to_watch.status <%x>\n",
596 readl(adapter->hw.hw_addr + tx_ring->head),
597 readl(adapter->hw.hw_addr + tx_ring->tail),
598 tx_ring->next_to_use,
599 tx_ring->next_to_clean,
600 tx_ring->buffer_info[eop].time_stamp,
601 eop,
602 jiffies,
603 eop_desc->upper.fields.status);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700604}
605
606/**
607 * e1000_clean_tx_irq - Reclaim resources after transmit completes
608 * @adapter: board private structure
609 *
610 * the return value indicates whether actual cleaning was done, there
611 * is no guarantee that everything was cleaned
612 **/
613static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
614{
615 struct net_device *netdev = adapter->netdev;
616 struct e1000_hw *hw = &adapter->hw;
617 struct e1000_ring *tx_ring = adapter->tx_ring;
618 struct e1000_tx_desc *tx_desc, *eop_desc;
619 struct e1000_buffer *buffer_info;
620 unsigned int i, eop;
621 unsigned int count = 0;
622 bool cleaned = 0;
623 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
624
625 i = tx_ring->next_to_clean;
626 eop = tx_ring->buffer_info[i].next_to_watch;
627 eop_desc = E1000_TX_DESC(*tx_ring, eop);
628
629 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
630 for (cleaned = 0; !cleaned; ) {
631 tx_desc = E1000_TX_DESC(*tx_ring, i);
632 buffer_info = &tx_ring->buffer_info[i];
633 cleaned = (i == eop);
634
635 if (cleaned) {
636 struct sk_buff *skb = buffer_info->skb;
637 unsigned int segs, bytecount;
638 segs = skb_shinfo(skb)->gso_segs ?: 1;
639 /* multiply data chunks by size of headers */
640 bytecount = ((segs - 1) * skb_headlen(skb)) +
641 skb->len;
642 total_tx_packets += segs;
643 total_tx_bytes += bytecount;
644 }
645
646 e1000_put_txbuf(adapter, buffer_info);
647 tx_desc->upper.data = 0;
648
649 i++;
650 if (i == tx_ring->count)
651 i = 0;
652 }
653
654 eop = tx_ring->buffer_info[i].next_to_watch;
655 eop_desc = E1000_TX_DESC(*tx_ring, eop);
656#define E1000_TX_WEIGHT 64
657 /* weight of a sort for tx, to avoid endless transmit cleanup */
658 if (count++ == E1000_TX_WEIGHT)
659 break;
660 }
661
662 tx_ring->next_to_clean = i;
663
664#define TX_WAKE_THRESHOLD 32
665 if (cleaned && netif_carrier_ok(netdev) &&
666 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
667 /* Make sure that anybody stopping the queue after this
668 * sees the new next_to_clean.
669 */
670 smp_mb();
671
672 if (netif_queue_stopped(netdev) &&
673 !(test_bit(__E1000_DOWN, &adapter->state))) {
674 netif_wake_queue(netdev);
675 ++adapter->restart_queue;
676 }
677 }
678
679 if (adapter->detect_tx_hung) {
Bruce Allanad680762008-03-28 09:15:03 -0700680 /*
681 * Detect a transmit hang in hardware, this serializes the
682 * check with the clearing of time_stamp and movement of i
683 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700684 adapter->detect_tx_hung = 0;
685 if (tx_ring->buffer_info[eop].dma &&
686 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp
687 + (adapter->tx_timeout_factor * HZ))
Bruce Allanad680762008-03-28 09:15:03 -0700688 && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700689 e1000_print_tx_hang(adapter);
690 netif_stop_queue(netdev);
691 }
692 }
693 adapter->total_tx_bytes += total_tx_bytes;
694 adapter->total_tx_packets += total_tx_packets;
Auke Kok41988692007-11-13 20:48:36 -0800695 adapter->net_stats.tx_bytes += total_tx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700696 adapter->net_stats.tx_packets += total_tx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700697 return cleaned;
698}
699
700/**
Auke Kokbc7f75f2007-09-17 12:30:59 -0700701 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
702 * @adapter: board private structure
703 *
704 * the return value indicates whether actual cleaning was done, there
705 * is no guarantee that everything was cleaned
706 **/
707static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
708 int *work_done, int work_to_do)
709{
710 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
711 struct net_device *netdev = adapter->netdev;
712 struct pci_dev *pdev = adapter->pdev;
713 struct e1000_ring *rx_ring = adapter->rx_ring;
714 struct e1000_buffer *buffer_info, *next_buffer;
715 struct e1000_ps_page *ps_page;
716 struct sk_buff *skb;
717 unsigned int i, j;
718 u32 length, staterr;
719 int cleaned_count = 0;
720 bool cleaned = 0;
721 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
722
723 i = rx_ring->next_to_clean;
724 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
725 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
726 buffer_info = &rx_ring->buffer_info[i];
727
728 while (staterr & E1000_RXD_STAT_DD) {
729 if (*work_done >= work_to_do)
730 break;
731 (*work_done)++;
732 skb = buffer_info->skb;
733
734 /* in the packet split case this is header only */
735 prefetch(skb->data - NET_IP_ALIGN);
736
737 i++;
738 if (i == rx_ring->count)
739 i = 0;
740 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
741 prefetch(next_rxd);
742
743 next_buffer = &rx_ring->buffer_info[i];
744
745 cleaned = 1;
746 cleaned_count++;
747 pci_unmap_single(pdev, buffer_info->dma,
748 adapter->rx_ps_bsize0,
749 PCI_DMA_FROMDEVICE);
750 buffer_info->dma = 0;
751
752 if (!(staterr & E1000_RXD_STAT_EOP)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -0700753 e_dbg("%s: Packet Split buffers didn't pick up the "
754 "full packet\n", netdev->name);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700755 dev_kfree_skb_irq(skb);
756 goto next_desc;
757 }
758
759 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
760 dev_kfree_skb_irq(skb);
761 goto next_desc;
762 }
763
764 length = le16_to_cpu(rx_desc->wb.middle.length0);
765
766 if (!length) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -0700767 e_dbg("%s: Last part of the packet spanning multiple "
768 "descriptors\n", netdev->name);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700769 dev_kfree_skb_irq(skb);
770 goto next_desc;
771 }
772
773 /* Good Receive */
774 skb_put(skb, length);
775
776 {
Bruce Allanad680762008-03-28 09:15:03 -0700777 /*
778 * this looks ugly, but it seems compiler issues make it
779 * more efficient than reusing j
780 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700781 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
782
Bruce Allanad680762008-03-28 09:15:03 -0700783 /*
784 * page alloc/put takes too long and effects small packet
785 * throughput, so unsplit small packets and save the alloc/put
786 * only valid in softirq (napi) context to call kmap_*
787 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700788 if (l1 && (l1 <= copybreak) &&
789 ((length + l1) <= adapter->rx_ps_bsize0)) {
790 u8 *vaddr;
791
Auke Kok47f44e42007-10-25 13:57:44 -0700792 ps_page = &buffer_info->ps_pages[0];
Auke Kokbc7f75f2007-09-17 12:30:59 -0700793
Bruce Allanad680762008-03-28 09:15:03 -0700794 /*
795 * there is no documentation about how to call
Auke Kokbc7f75f2007-09-17 12:30:59 -0700796 * kmap_atomic, so we can't hold the mapping
Bruce Allanad680762008-03-28 09:15:03 -0700797 * very long
798 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700799 pci_dma_sync_single_for_cpu(pdev, ps_page->dma,
800 PAGE_SIZE, PCI_DMA_FROMDEVICE);
801 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
802 memcpy(skb_tail_pointer(skb), vaddr, l1);
803 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
804 pci_dma_sync_single_for_device(pdev, ps_page->dma,
805 PAGE_SIZE, PCI_DMA_FROMDEVICE);
Auke Kok140a7482007-10-25 13:57:58 -0700806
Auke Kokbc7f75f2007-09-17 12:30:59 -0700807 skb_put(skb, l1);
808 goto copydone;
809 } /* if */
810 }
811
812 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
813 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
814 if (!length)
815 break;
816
Auke Kok47f44e42007-10-25 13:57:44 -0700817 ps_page = &buffer_info->ps_pages[j];
Auke Kokbc7f75f2007-09-17 12:30:59 -0700818 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
819 PCI_DMA_FROMDEVICE);
820 ps_page->dma = 0;
821 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
822 ps_page->page = NULL;
823 skb->len += length;
824 skb->data_len += length;
825 skb->truesize += length;
826 }
827
Auke Kokbc7f75f2007-09-17 12:30:59 -0700828copydone:
829 total_rx_bytes += skb->len;
830 total_rx_packets++;
831
832 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
833 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
834
835 if (rx_desc->wb.upper.header_status &
836 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
837 adapter->rx_hdr_split++;
838
839 e1000_receive_skb(adapter, netdev, skb,
840 staterr, rx_desc->wb.middle.vlan);
841
842next_desc:
843 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
844 buffer_info->skb = NULL;
845
846 /* return some buffers to hardware, one at a time is too slow */
847 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
848 adapter->alloc_rx_buf(adapter, cleaned_count);
849 cleaned_count = 0;
850 }
851
852 /* use prefetched values */
853 rx_desc = next_rxd;
854 buffer_info = next_buffer;
855
856 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
857 }
858 rx_ring->next_to_clean = i;
859
860 cleaned_count = e1000_desc_unused(rx_ring);
861 if (cleaned_count)
862 adapter->alloc_rx_buf(adapter, cleaned_count);
863
Auke Kokbc7f75f2007-09-17 12:30:59 -0700864 adapter->total_rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700865 adapter->total_rx_packets += total_rx_packets;
Auke Kok41988692007-11-13 20:48:36 -0800866 adapter->net_stats.rx_bytes += total_rx_bytes;
Bruce Allan7c257692008-04-23 11:09:00 -0700867 adapter->net_stats.rx_packets += total_rx_packets;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700868 return cleaned;
869}
870
871/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700872 * e1000_consume_page - helper function
873 **/
874static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
875 u16 length)
876{
877 bi->page = NULL;
878 skb->len += length;
879 skb->data_len += length;
880 skb->truesize += length;
881}
882
883/**
884 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
885 * @adapter: board private structure
886 *
887 * the return value indicates whether actual cleaning was done, there
888 * is no guarantee that everything was cleaned
889 **/
890
891static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
892 int *work_done, int work_to_do)
893{
894 struct net_device *netdev = adapter->netdev;
895 struct pci_dev *pdev = adapter->pdev;
896 struct e1000_ring *rx_ring = adapter->rx_ring;
897 struct e1000_rx_desc *rx_desc, *next_rxd;
898 struct e1000_buffer *buffer_info, *next_buffer;
899 u32 length;
900 unsigned int i;
901 int cleaned_count = 0;
902 bool cleaned = false;
903 unsigned int total_rx_bytes=0, total_rx_packets=0;
904
905 i = rx_ring->next_to_clean;
906 rx_desc = E1000_RX_DESC(*rx_ring, i);
907 buffer_info = &rx_ring->buffer_info[i];
908
909 while (rx_desc->status & E1000_RXD_STAT_DD) {
910 struct sk_buff *skb;
911 u8 status;
912
913 if (*work_done >= work_to_do)
914 break;
915 (*work_done)++;
916
917 status = rx_desc->status;
918 skb = buffer_info->skb;
919 buffer_info->skb = NULL;
920
921 ++i;
922 if (i == rx_ring->count)
923 i = 0;
924 next_rxd = E1000_RX_DESC(*rx_ring, i);
925 prefetch(next_rxd);
926
927 next_buffer = &rx_ring->buffer_info[i];
928
929 cleaned = true;
930 cleaned_count++;
931 pci_unmap_page(pdev, buffer_info->dma, PAGE_SIZE,
932 PCI_DMA_FROMDEVICE);
933 buffer_info->dma = 0;
934
935 length = le16_to_cpu(rx_desc->length);
936
937 /* errors is only valid for DD + EOP descriptors */
938 if (unlikely((status & E1000_RXD_STAT_EOP) &&
939 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
940 /* recycle both page and skb */
941 buffer_info->skb = skb;
942 /* an error means any chain goes out the window
943 * too */
944 if (rx_ring->rx_skb_top)
945 dev_kfree_skb(rx_ring->rx_skb_top);
946 rx_ring->rx_skb_top = NULL;
947 goto next_desc;
948 }
949
950#define rxtop rx_ring->rx_skb_top
951 if (!(status & E1000_RXD_STAT_EOP)) {
952 /* this descriptor is only the beginning (or middle) */
953 if (!rxtop) {
954 /* this is the beginning of a chain */
955 rxtop = skb;
956 skb_fill_page_desc(rxtop, 0, buffer_info->page,
957 0, length);
958 } else {
959 /* this is the middle of a chain */
960 skb_fill_page_desc(rxtop,
961 skb_shinfo(rxtop)->nr_frags,
962 buffer_info->page, 0, length);
963 /* re-use the skb, only consumed the page */
964 buffer_info->skb = skb;
965 }
966 e1000_consume_page(buffer_info, rxtop, length);
967 goto next_desc;
968 } else {
969 if (rxtop) {
970 /* end of the chain */
971 skb_fill_page_desc(rxtop,
972 skb_shinfo(rxtop)->nr_frags,
973 buffer_info->page, 0, length);
974 /* re-use the current skb, we only consumed the
975 * page */
976 buffer_info->skb = skb;
977 skb = rxtop;
978 rxtop = NULL;
979 e1000_consume_page(buffer_info, skb, length);
980 } else {
981 /* no chain, got EOP, this buf is the packet
982 * copybreak to save the put_page/alloc_page */
983 if (length <= copybreak &&
984 skb_tailroom(skb) >= length) {
985 u8 *vaddr;
986 vaddr = kmap_atomic(buffer_info->page,
987 KM_SKB_DATA_SOFTIRQ);
988 memcpy(skb_tail_pointer(skb), vaddr,
989 length);
990 kunmap_atomic(vaddr,
991 KM_SKB_DATA_SOFTIRQ);
992 /* re-use the page, so don't erase
993 * buffer_info->page */
994 skb_put(skb, length);
995 } else {
996 skb_fill_page_desc(skb, 0,
997 buffer_info->page, 0,
998 length);
999 e1000_consume_page(buffer_info, skb,
1000 length);
1001 }
1002 }
1003 }
1004
1005 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1006 e1000_rx_checksum(adapter,
1007 (u32)(status) |
1008 ((u32)(rx_desc->errors) << 24),
1009 le16_to_cpu(rx_desc->csum), skb);
1010
1011 /* probably a little skewed due to removing CRC */
1012 total_rx_bytes += skb->len;
1013 total_rx_packets++;
1014
1015 /* eth type trans needs skb->data to point to something */
1016 if (!pskb_may_pull(skb, ETH_HLEN)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001017 e_err("pskb_may_pull failed.\n");
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001018 dev_kfree_skb(skb);
1019 goto next_desc;
1020 }
1021
1022 e1000_receive_skb(adapter, netdev, skb, status,
1023 rx_desc->special);
1024
1025next_desc:
1026 rx_desc->status = 0;
1027
1028 /* return some buffers to hardware, one at a time is too slow */
1029 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1030 adapter->alloc_rx_buf(adapter, cleaned_count);
1031 cleaned_count = 0;
1032 }
1033
1034 /* use prefetched values */
1035 rx_desc = next_rxd;
1036 buffer_info = next_buffer;
1037 }
1038 rx_ring->next_to_clean = i;
1039
1040 cleaned_count = e1000_desc_unused(rx_ring);
1041 if (cleaned_count)
1042 adapter->alloc_rx_buf(adapter, cleaned_count);
1043
1044 adapter->total_rx_bytes += total_rx_bytes;
1045 adapter->total_rx_packets += total_rx_packets;
1046 adapter->net_stats.rx_bytes += total_rx_bytes;
1047 adapter->net_stats.rx_packets += total_rx_packets;
1048 return cleaned;
1049}
1050
1051/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001052 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1053 * @adapter: board private structure
1054 **/
1055static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1056{
1057 struct e1000_ring *rx_ring = adapter->rx_ring;
1058 struct e1000_buffer *buffer_info;
1059 struct e1000_ps_page *ps_page;
1060 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001061 unsigned int i, j;
1062
1063 /* Free all the Rx ring sk_buffs */
1064 for (i = 0; i < rx_ring->count; i++) {
1065 buffer_info = &rx_ring->buffer_info[i];
1066 if (buffer_info->dma) {
1067 if (adapter->clean_rx == e1000_clean_rx_irq)
1068 pci_unmap_single(pdev, buffer_info->dma,
1069 adapter->rx_buffer_len,
1070 PCI_DMA_FROMDEVICE);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001071 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1072 pci_unmap_page(pdev, buffer_info->dma,
1073 PAGE_SIZE,
1074 PCI_DMA_FROMDEVICE);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001075 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1076 pci_unmap_single(pdev, buffer_info->dma,
1077 adapter->rx_ps_bsize0,
1078 PCI_DMA_FROMDEVICE);
1079 buffer_info->dma = 0;
1080 }
1081
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001082 if (buffer_info->page) {
1083 put_page(buffer_info->page);
1084 buffer_info->page = NULL;
1085 }
1086
Auke Kokbc7f75f2007-09-17 12:30:59 -07001087 if (buffer_info->skb) {
1088 dev_kfree_skb(buffer_info->skb);
1089 buffer_info->skb = NULL;
1090 }
1091
1092 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
Auke Kok47f44e42007-10-25 13:57:44 -07001093 ps_page = &buffer_info->ps_pages[j];
Auke Kokbc7f75f2007-09-17 12:30:59 -07001094 if (!ps_page->page)
1095 break;
1096 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
1097 PCI_DMA_FROMDEVICE);
1098 ps_page->dma = 0;
1099 put_page(ps_page->page);
1100 ps_page->page = NULL;
1101 }
1102 }
1103
1104 /* there also may be some cached data from a chained receive */
1105 if (rx_ring->rx_skb_top) {
1106 dev_kfree_skb(rx_ring->rx_skb_top);
1107 rx_ring->rx_skb_top = NULL;
1108 }
1109
Auke Kokbc7f75f2007-09-17 12:30:59 -07001110 /* Zero out the descriptor ring */
1111 memset(rx_ring->desc, 0, rx_ring->size);
1112
1113 rx_ring->next_to_clean = 0;
1114 rx_ring->next_to_use = 0;
1115
1116 writel(0, adapter->hw.hw_addr + rx_ring->head);
1117 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1118}
1119
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001120static void e1000e_downshift_workaround(struct work_struct *work)
1121{
1122 struct e1000_adapter *adapter = container_of(work,
1123 struct e1000_adapter, downshift_task);
1124
1125 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1126}
1127
Auke Kokbc7f75f2007-09-17 12:30:59 -07001128/**
1129 * e1000_intr_msi - Interrupt Handler
1130 * @irq: interrupt number
1131 * @data: pointer to a network interface device structure
1132 **/
1133static irqreturn_t e1000_intr_msi(int irq, void *data)
1134{
1135 struct net_device *netdev = data;
1136 struct e1000_adapter *adapter = netdev_priv(netdev);
1137 struct e1000_hw *hw = &adapter->hw;
1138 u32 icr = er32(ICR);
1139
Bruce Allanad680762008-03-28 09:15:03 -07001140 /*
1141 * read ICR disables interrupts using IAM
1142 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001143
1144 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1145 hw->mac.get_link_status = 1;
Bruce Allanad680762008-03-28 09:15:03 -07001146 /*
1147 * ICH8 workaround-- Call gig speed drop workaround on cable
1148 * disconnect (LSC) before accessing any PHY registers
1149 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001150 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1151 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001152 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001153
Bruce Allanad680762008-03-28 09:15:03 -07001154 /*
1155 * 80003ES2LAN workaround-- For packet buffer work-around on
Auke Kokbc7f75f2007-09-17 12:30:59 -07001156 * link down event; disable receives here in the ISR and reset
Bruce Allanad680762008-03-28 09:15:03 -07001157 * adapter in watchdog
1158 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001159 if (netif_carrier_ok(netdev) &&
1160 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1161 /* disable receives */
1162 u32 rctl = er32(RCTL);
1163 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001164 adapter->flags |= FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001165 }
1166 /* guard against interrupt when we're going down */
1167 if (!test_bit(__E1000_DOWN, &adapter->state))
1168 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1169 }
1170
1171 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1172 adapter->total_tx_bytes = 0;
1173 adapter->total_tx_packets = 0;
1174 adapter->total_rx_bytes = 0;
1175 adapter->total_rx_packets = 0;
1176 __netif_rx_schedule(netdev, &adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001177 }
1178
1179 return IRQ_HANDLED;
1180}
1181
1182/**
1183 * e1000_intr - Interrupt Handler
1184 * @irq: interrupt number
1185 * @data: pointer to a network interface device structure
1186 **/
1187static irqreturn_t e1000_intr(int irq, void *data)
1188{
1189 struct net_device *netdev = data;
1190 struct e1000_adapter *adapter = netdev_priv(netdev);
1191 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001192 u32 rctl, icr = er32(ICR);
Bruce Allan4662e822008-08-26 18:37:06 -07001193
Auke Kokbc7f75f2007-09-17 12:30:59 -07001194 if (!icr)
1195 return IRQ_NONE; /* Not our interrupt */
1196
Bruce Allanad680762008-03-28 09:15:03 -07001197 /*
1198 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1199 * not set, then the adapter didn't send an interrupt
1200 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001201 if (!(icr & E1000_ICR_INT_ASSERTED))
1202 return IRQ_NONE;
1203
Bruce Allanad680762008-03-28 09:15:03 -07001204 /*
1205 * Interrupt Auto-Mask...upon reading ICR,
1206 * interrupts are masked. No need for the
1207 * IMC write
1208 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001209
1210 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1211 hw->mac.get_link_status = 1;
Bruce Allanad680762008-03-28 09:15:03 -07001212 /*
1213 * ICH8 workaround-- Call gig speed drop workaround on cable
1214 * disconnect (LSC) before accessing any PHY registers
1215 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001216 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1217 (!(er32(STATUS) & E1000_STATUS_LU)))
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07001218 schedule_work(&adapter->downshift_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001219
Bruce Allanad680762008-03-28 09:15:03 -07001220 /*
1221 * 80003ES2LAN workaround--
Auke Kokbc7f75f2007-09-17 12:30:59 -07001222 * For packet buffer work-around on link down event;
1223 * disable receives here in the ISR and
1224 * reset adapter in watchdog
1225 */
1226 if (netif_carrier_ok(netdev) &&
1227 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1228 /* disable receives */
1229 rctl = er32(RCTL);
1230 ew32(RCTL, rctl & ~E1000_RCTL_EN);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001231 adapter->flags |= FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001232 }
1233 /* guard against interrupt when we're going down */
1234 if (!test_bit(__E1000_DOWN, &adapter->state))
1235 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1236 }
1237
1238 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1239 adapter->total_tx_bytes = 0;
1240 adapter->total_tx_packets = 0;
1241 adapter->total_rx_bytes = 0;
1242 adapter->total_rx_packets = 0;
1243 __netif_rx_schedule(netdev, &adapter->napi);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001244 }
1245
1246 return IRQ_HANDLED;
1247}
1248
Bruce Allan4662e822008-08-26 18:37:06 -07001249static irqreturn_t e1000_msix_other(int irq, void *data)
1250{
1251 struct net_device *netdev = data;
1252 struct e1000_adapter *adapter = netdev_priv(netdev);
1253 struct e1000_hw *hw = &adapter->hw;
1254 u32 icr = er32(ICR);
1255
1256 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1257 ew32(IMS, E1000_IMS_OTHER);
1258 return IRQ_NONE;
1259 }
1260
1261 if (icr & adapter->eiac_mask)
1262 ew32(ICS, (icr & adapter->eiac_mask));
1263
1264 if (icr & E1000_ICR_OTHER) {
1265 if (!(icr & E1000_ICR_LSC))
1266 goto no_link_interrupt;
1267 hw->mac.get_link_status = 1;
1268 /* guard against interrupt when we're going down */
1269 if (!test_bit(__E1000_DOWN, &adapter->state))
1270 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1271 }
1272
1273no_link_interrupt:
1274 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1275
1276 return IRQ_HANDLED;
1277}
1278
1279
1280static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1281{
1282 struct net_device *netdev = data;
1283 struct e1000_adapter *adapter = netdev_priv(netdev);
1284 struct e1000_hw *hw = &adapter->hw;
1285 struct e1000_ring *tx_ring = adapter->tx_ring;
1286
1287
1288 adapter->total_tx_bytes = 0;
1289 adapter->total_tx_packets = 0;
1290
1291 if (!e1000_clean_tx_irq(adapter))
1292 /* Ring was not completely cleaned, so fire another interrupt */
1293 ew32(ICS, tx_ring->ims_val);
1294
1295 return IRQ_HANDLED;
1296}
1297
1298static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1299{
1300 struct net_device *netdev = data;
1301 struct e1000_adapter *adapter = netdev_priv(netdev);
1302
1303 /* Write the ITR value calculated at the end of the
1304 * previous interrupt.
1305 */
1306 if (adapter->rx_ring->set_itr) {
1307 writel(1000000000 / (adapter->rx_ring->itr_val * 256),
1308 adapter->hw.hw_addr + adapter->rx_ring->itr_register);
1309 adapter->rx_ring->set_itr = 0;
1310 }
1311
1312 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1313 adapter->total_rx_bytes = 0;
1314 adapter->total_rx_packets = 0;
1315 __netif_rx_schedule(netdev, &adapter->napi);
1316 }
1317 return IRQ_HANDLED;
1318}
1319
1320/**
1321 * e1000_configure_msix - Configure MSI-X hardware
1322 *
1323 * e1000_configure_msix sets up the hardware to properly
1324 * generate MSI-X interrupts.
1325 **/
1326static void e1000_configure_msix(struct e1000_adapter *adapter)
1327{
1328 struct e1000_hw *hw = &adapter->hw;
1329 struct e1000_ring *rx_ring = adapter->rx_ring;
1330 struct e1000_ring *tx_ring = adapter->tx_ring;
1331 int vector = 0;
1332 u32 ctrl_ext, ivar = 0;
1333
1334 adapter->eiac_mask = 0;
1335
1336 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1337 if (hw->mac.type == e1000_82574) {
1338 u32 rfctl = er32(RFCTL);
1339 rfctl |= E1000_RFCTL_ACK_DIS;
1340 ew32(RFCTL, rfctl);
1341 }
1342
1343#define E1000_IVAR_INT_ALLOC_VALID 0x8
1344 /* Configure Rx vector */
1345 rx_ring->ims_val = E1000_IMS_RXQ0;
1346 adapter->eiac_mask |= rx_ring->ims_val;
1347 if (rx_ring->itr_val)
1348 writel(1000000000 / (rx_ring->itr_val * 256),
1349 hw->hw_addr + rx_ring->itr_register);
1350 else
1351 writel(1, hw->hw_addr + rx_ring->itr_register);
1352 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1353
1354 /* Configure Tx vector */
1355 tx_ring->ims_val = E1000_IMS_TXQ0;
1356 vector++;
1357 if (tx_ring->itr_val)
1358 writel(1000000000 / (tx_ring->itr_val * 256),
1359 hw->hw_addr + tx_ring->itr_register);
1360 else
1361 writel(1, hw->hw_addr + tx_ring->itr_register);
1362 adapter->eiac_mask |= tx_ring->ims_val;
1363 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1364
1365 /* set vector for Other Causes, e.g. link changes */
1366 vector++;
1367 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1368 if (rx_ring->itr_val)
1369 writel(1000000000 / (rx_ring->itr_val * 256),
1370 hw->hw_addr + E1000_EITR_82574(vector));
1371 else
1372 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1373
1374 /* Cause Tx interrupts on every write back */
1375 ivar |= (1 << 31);
1376
1377 ew32(IVAR, ivar);
1378
1379 /* enable MSI-X PBA support */
1380 ctrl_ext = er32(CTRL_EXT);
1381 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1382
1383 /* Auto-Mask Other interrupts upon ICR read */
1384#define E1000_EIAC_MASK_82574 0x01F00000
1385 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1386 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1387 ew32(CTRL_EXT, ctrl_ext);
1388 e1e_flush();
1389}
1390
1391void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1392{
1393 if (adapter->msix_entries) {
1394 pci_disable_msix(adapter->pdev);
1395 kfree(adapter->msix_entries);
1396 adapter->msix_entries = NULL;
1397 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1398 pci_disable_msi(adapter->pdev);
1399 adapter->flags &= ~FLAG_MSI_ENABLED;
1400 }
1401
1402 return;
1403}
1404
1405/**
1406 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1407 *
1408 * Attempt to configure interrupts using the best available
1409 * capabilities of the hardware and kernel.
1410 **/
1411void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1412{
1413 int err;
1414 int numvecs, i;
1415
1416
1417 switch (adapter->int_mode) {
1418 case E1000E_INT_MODE_MSIX:
1419 if (adapter->flags & FLAG_HAS_MSIX) {
1420 numvecs = 3; /* RxQ0, TxQ0 and other */
1421 adapter->msix_entries = kcalloc(numvecs,
1422 sizeof(struct msix_entry),
1423 GFP_KERNEL);
1424 if (adapter->msix_entries) {
1425 for (i = 0; i < numvecs; i++)
1426 adapter->msix_entries[i].entry = i;
1427
1428 err = pci_enable_msix(adapter->pdev,
1429 adapter->msix_entries,
1430 numvecs);
1431 if (err == 0)
1432 return;
1433 }
1434 /* MSI-X failed, so fall through and try MSI */
1435 e_err("Failed to initialize MSI-X interrupts. "
1436 "Falling back to MSI interrupts.\n");
1437 e1000e_reset_interrupt_capability(adapter);
1438 }
1439 adapter->int_mode = E1000E_INT_MODE_MSI;
1440 /* Fall through */
1441 case E1000E_INT_MODE_MSI:
1442 if (!pci_enable_msi(adapter->pdev)) {
1443 adapter->flags |= FLAG_MSI_ENABLED;
1444 } else {
1445 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1446 e_err("Failed to initialize MSI interrupts. Falling "
1447 "back to legacy interrupts.\n");
1448 }
1449 /* Fall through */
1450 case E1000E_INT_MODE_LEGACY:
1451 /* Don't do anything; this is the system default */
1452 break;
1453 }
1454
1455 return;
1456}
1457
1458/**
1459 * e1000_request_msix - Initialize MSI-X interrupts
1460 *
1461 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1462 * kernel.
1463 **/
1464static int e1000_request_msix(struct e1000_adapter *adapter)
1465{
1466 struct net_device *netdev = adapter->netdev;
1467 int err = 0, vector = 0;
1468
1469 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1470 sprintf(adapter->rx_ring->name, "%s-rx0", netdev->name);
1471 else
1472 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1473 err = request_irq(adapter->msix_entries[vector].vector,
1474 &e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1475 netdev);
1476 if (err)
1477 goto out;
1478 adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
1479 adapter->rx_ring->itr_val = adapter->itr;
1480 vector++;
1481
1482 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1483 sprintf(adapter->tx_ring->name, "%s-tx0", netdev->name);
1484 else
1485 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1486 err = request_irq(adapter->msix_entries[vector].vector,
1487 &e1000_intr_msix_tx, 0, adapter->tx_ring->name,
1488 netdev);
1489 if (err)
1490 goto out;
1491 adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
1492 adapter->tx_ring->itr_val = adapter->itr;
1493 vector++;
1494
1495 err = request_irq(adapter->msix_entries[vector].vector,
1496 &e1000_msix_other, 0, netdev->name, netdev);
1497 if (err)
1498 goto out;
1499
1500 e1000_configure_msix(adapter);
1501 return 0;
1502out:
1503 return err;
1504}
1505
Bruce Allanf8d59f72008-08-08 18:36:11 -07001506/**
1507 * e1000_request_irq - initialize interrupts
1508 *
1509 * Attempts to configure interrupts using the best available
1510 * capabilities of the hardware and kernel.
1511 **/
Auke Kokbc7f75f2007-09-17 12:30:59 -07001512static int e1000_request_irq(struct e1000_adapter *adapter)
1513{
1514 struct net_device *netdev = adapter->netdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001515 int err;
1516
Bruce Allan4662e822008-08-26 18:37:06 -07001517 if (adapter->msix_entries) {
1518 err = e1000_request_msix(adapter);
1519 if (!err)
1520 return err;
1521 /* fall back to MSI */
1522 e1000e_reset_interrupt_capability(adapter);
1523 adapter->int_mode = E1000E_INT_MODE_MSI;
1524 e1000e_set_interrupt_capability(adapter);
1525 }
1526 if (adapter->flags & FLAG_MSI_ENABLED) {
1527 err = request_irq(adapter->pdev->irq, &e1000_intr_msi, 0,
1528 netdev->name, netdev);
1529 if (!err)
1530 return err;
1531
1532 /* fall back to legacy interrupt */
1533 e1000e_reset_interrupt_capability(adapter);
1534 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001535 }
1536
Bruce Allan4662e822008-08-26 18:37:06 -07001537 err = request_irq(adapter->pdev->irq, &e1000_intr, IRQF_SHARED,
1538 netdev->name, netdev);
1539 if (err)
Bruce Allanf8d59f72008-08-08 18:36:11 -07001540 e_err("Unable to allocate interrupt, Error: %d\n", err);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001541
1542 return err;
1543}
1544
1545static void e1000_free_irq(struct e1000_adapter *adapter)
1546{
1547 struct net_device *netdev = adapter->netdev;
1548
Bruce Allan4662e822008-08-26 18:37:06 -07001549 if (adapter->msix_entries) {
1550 int vector = 0;
1551
1552 free_irq(adapter->msix_entries[vector].vector, netdev);
1553 vector++;
1554
1555 free_irq(adapter->msix_entries[vector].vector, netdev);
1556 vector++;
1557
1558 /* Other Causes interrupt vector */
1559 free_irq(adapter->msix_entries[vector].vector, netdev);
1560 return;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001561 }
Bruce Allan4662e822008-08-26 18:37:06 -07001562
1563 free_irq(adapter->pdev->irq, netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001564}
1565
1566/**
1567 * e1000_irq_disable - Mask off interrupt generation on the NIC
1568 **/
1569static void e1000_irq_disable(struct e1000_adapter *adapter)
1570{
1571 struct e1000_hw *hw = &adapter->hw;
1572
Auke Kokbc7f75f2007-09-17 12:30:59 -07001573 ew32(IMC, ~0);
Bruce Allan4662e822008-08-26 18:37:06 -07001574 if (adapter->msix_entries)
1575 ew32(EIAC_82574, 0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001576 e1e_flush();
1577 synchronize_irq(adapter->pdev->irq);
1578}
1579
1580/**
1581 * e1000_irq_enable - Enable default interrupt generation settings
1582 **/
1583static void e1000_irq_enable(struct e1000_adapter *adapter)
1584{
1585 struct e1000_hw *hw = &adapter->hw;
1586
Bruce Allan4662e822008-08-26 18:37:06 -07001587 if (adapter->msix_entries) {
1588 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
1589 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
1590 } else {
1591 ew32(IMS, IMS_ENABLE_MASK);
1592 }
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07001593 e1e_flush();
Auke Kokbc7f75f2007-09-17 12:30:59 -07001594}
1595
1596/**
1597 * e1000_get_hw_control - get control of the h/w from f/w
1598 * @adapter: address of board private structure
1599 *
Auke Kok489815c2008-02-21 15:11:07 -08001600 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07001601 * For ASF and Pass Through versions of f/w this means that
1602 * the driver is loaded. For AMT version (only with 82573)
1603 * of the f/w this means that the network i/f is open.
1604 **/
1605static void e1000_get_hw_control(struct e1000_adapter *adapter)
1606{
1607 struct e1000_hw *hw = &adapter->hw;
1608 u32 ctrl_ext;
1609 u32 swsm;
1610
1611 /* Let firmware know the driver has taken over */
1612 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1613 swsm = er32(SWSM);
1614 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1615 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1616 ctrl_ext = er32(CTRL_EXT);
Bruce Allanad680762008-03-28 09:15:03 -07001617 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001618 }
1619}
1620
1621/**
1622 * e1000_release_hw_control - release control of the h/w to f/w
1623 * @adapter: address of board private structure
1624 *
Auke Kok489815c2008-02-21 15:11:07 -08001625 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
Auke Kokbc7f75f2007-09-17 12:30:59 -07001626 * For ASF and Pass Through versions of f/w this means that the
1627 * driver is no longer loaded. For AMT version (only with 82573) i
1628 * of the f/w this means that the network i/f is closed.
1629 *
1630 **/
1631static void e1000_release_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 taken over control of h/w */
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);
Bruce Allanad680762008-03-28 09:15:03 -07001643 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001644 }
1645}
1646
Auke Kokbc7f75f2007-09-17 12:30:59 -07001647/**
1648 * @e1000_alloc_ring - allocate memory for a ring structure
1649 **/
1650static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
1651 struct e1000_ring *ring)
1652{
1653 struct pci_dev *pdev = adapter->pdev;
1654
1655 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
1656 GFP_KERNEL);
1657 if (!ring->desc)
1658 return -ENOMEM;
1659
1660 return 0;
1661}
1662
1663/**
1664 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1665 * @adapter: board private structure
1666 *
1667 * Return 0 on success, negative on failure
1668 **/
1669int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
1670{
1671 struct e1000_ring *tx_ring = adapter->tx_ring;
1672 int err = -ENOMEM, size;
1673
1674 size = sizeof(struct e1000_buffer) * tx_ring->count;
1675 tx_ring->buffer_info = vmalloc(size);
1676 if (!tx_ring->buffer_info)
1677 goto err;
1678 memset(tx_ring->buffer_info, 0, size);
1679
1680 /* round up to nearest 4K */
1681 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1682 tx_ring->size = ALIGN(tx_ring->size, 4096);
1683
1684 err = e1000_alloc_ring_dma(adapter, tx_ring);
1685 if (err)
1686 goto err;
1687
1688 tx_ring->next_to_use = 0;
1689 tx_ring->next_to_clean = 0;
1690 spin_lock_init(&adapter->tx_queue_lock);
1691
1692 return 0;
1693err:
1694 vfree(tx_ring->buffer_info);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001695 e_err("Unable to allocate memory for the transmit descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001696 return err;
1697}
1698
1699/**
1700 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1701 * @adapter: board private structure
1702 *
1703 * Returns 0 on success, negative on failure
1704 **/
1705int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
1706{
1707 struct e1000_ring *rx_ring = adapter->rx_ring;
Auke Kok47f44e42007-10-25 13:57:44 -07001708 struct e1000_buffer *buffer_info;
1709 int i, size, desc_len, err = -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001710
1711 size = sizeof(struct e1000_buffer) * rx_ring->count;
1712 rx_ring->buffer_info = vmalloc(size);
1713 if (!rx_ring->buffer_info)
1714 goto err;
1715 memset(rx_ring->buffer_info, 0, size);
1716
Auke Kok47f44e42007-10-25 13:57:44 -07001717 for (i = 0; i < rx_ring->count; i++) {
1718 buffer_info = &rx_ring->buffer_info[i];
1719 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
1720 sizeof(struct e1000_ps_page),
1721 GFP_KERNEL);
1722 if (!buffer_info->ps_pages)
1723 goto err_pages;
1724 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001725
1726 desc_len = sizeof(union e1000_rx_desc_packet_split);
1727
1728 /* Round up to nearest 4K */
1729 rx_ring->size = rx_ring->count * desc_len;
1730 rx_ring->size = ALIGN(rx_ring->size, 4096);
1731
1732 err = e1000_alloc_ring_dma(adapter, rx_ring);
1733 if (err)
Auke Kok47f44e42007-10-25 13:57:44 -07001734 goto err_pages;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001735
1736 rx_ring->next_to_clean = 0;
1737 rx_ring->next_to_use = 0;
1738 rx_ring->rx_skb_top = NULL;
1739
1740 return 0;
Auke Kok47f44e42007-10-25 13:57:44 -07001741
1742err_pages:
1743 for (i = 0; i < rx_ring->count; i++) {
1744 buffer_info = &rx_ring->buffer_info[i];
1745 kfree(buffer_info->ps_pages);
1746 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07001747err:
1748 vfree(rx_ring->buffer_info);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07001749 e_err("Unable to allocate memory for the transmit descriptor ring\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07001750 return err;
1751}
1752
1753/**
1754 * e1000_clean_tx_ring - Free Tx Buffers
1755 * @adapter: board private structure
1756 **/
1757static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
1758{
1759 struct e1000_ring *tx_ring = adapter->tx_ring;
1760 struct e1000_buffer *buffer_info;
1761 unsigned long size;
1762 unsigned int i;
1763
1764 for (i = 0; i < tx_ring->count; i++) {
1765 buffer_info = &tx_ring->buffer_info[i];
1766 e1000_put_txbuf(adapter, buffer_info);
1767 }
1768
1769 size = sizeof(struct e1000_buffer) * tx_ring->count;
1770 memset(tx_ring->buffer_info, 0, size);
1771
1772 memset(tx_ring->desc, 0, tx_ring->size);
1773
1774 tx_ring->next_to_use = 0;
1775 tx_ring->next_to_clean = 0;
1776
1777 writel(0, adapter->hw.hw_addr + tx_ring->head);
1778 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1779}
1780
1781/**
1782 * e1000e_free_tx_resources - Free Tx Resources per Queue
1783 * @adapter: board private structure
1784 *
1785 * Free all transmit software resources
1786 **/
1787void e1000e_free_tx_resources(struct e1000_adapter *adapter)
1788{
1789 struct pci_dev *pdev = adapter->pdev;
1790 struct e1000_ring *tx_ring = adapter->tx_ring;
1791
1792 e1000_clean_tx_ring(adapter);
1793
1794 vfree(tx_ring->buffer_info);
1795 tx_ring->buffer_info = NULL;
1796
1797 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1798 tx_ring->dma);
1799 tx_ring->desc = NULL;
1800}
1801
1802/**
1803 * e1000e_free_rx_resources - Free Rx Resources
1804 * @adapter: board private structure
1805 *
1806 * Free all receive software resources
1807 **/
1808
1809void e1000e_free_rx_resources(struct e1000_adapter *adapter)
1810{
1811 struct pci_dev *pdev = adapter->pdev;
1812 struct e1000_ring *rx_ring = adapter->rx_ring;
Auke Kok47f44e42007-10-25 13:57:44 -07001813 int i;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001814
1815 e1000_clean_rx_ring(adapter);
1816
Auke Kok47f44e42007-10-25 13:57:44 -07001817 for (i = 0; i < rx_ring->count; i++) {
1818 kfree(rx_ring->buffer_info[i].ps_pages);
1819 }
1820
Auke Kokbc7f75f2007-09-17 12:30:59 -07001821 vfree(rx_ring->buffer_info);
1822 rx_ring->buffer_info = NULL;
1823
Auke Kokbc7f75f2007-09-17 12:30:59 -07001824 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1825 rx_ring->dma);
1826 rx_ring->desc = NULL;
1827}
1828
1829/**
1830 * e1000_update_itr - update the dynamic ITR value based on statistics
Auke Kok489815c2008-02-21 15:11:07 -08001831 * @adapter: pointer to adapter
1832 * @itr_setting: current adapter->itr
1833 * @packets: the number of packets during this measurement interval
1834 * @bytes: the number of bytes during this measurement interval
1835 *
Auke Kokbc7f75f2007-09-17 12:30:59 -07001836 * Stores a new ITR value based on packets and byte
1837 * counts during the last interrupt. The advantage of per interrupt
1838 * computation is faster updates and more accurate ITR for the current
1839 * traffic pattern. Constants in this function were computed
1840 * based on theoretical maximum wire speed and thresholds were set based
1841 * on testing data as well as attempting to minimize response time
Bruce Allan4662e822008-08-26 18:37:06 -07001842 * while increasing bulk throughput. This functionality is controlled
1843 * by the InterruptThrottleRate module parameter.
Auke Kokbc7f75f2007-09-17 12:30:59 -07001844 **/
1845static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
1846 u16 itr_setting, int packets,
1847 int bytes)
1848{
1849 unsigned int retval = itr_setting;
1850
1851 if (packets == 0)
1852 goto update_itr_done;
1853
1854 switch (itr_setting) {
1855 case lowest_latency:
1856 /* handle TSO and jumbo frames */
1857 if (bytes/packets > 8000)
1858 retval = bulk_latency;
1859 else if ((packets < 5) && (bytes > 512)) {
1860 retval = low_latency;
1861 }
1862 break;
1863 case low_latency: /* 50 usec aka 20000 ints/s */
1864 if (bytes > 10000) {
1865 /* this if handles the TSO accounting */
1866 if (bytes/packets > 8000) {
1867 retval = bulk_latency;
1868 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
1869 retval = bulk_latency;
1870 } else if ((packets > 35)) {
1871 retval = lowest_latency;
1872 }
1873 } else if (bytes/packets > 2000) {
1874 retval = bulk_latency;
1875 } else if (packets <= 2 && bytes < 512) {
1876 retval = lowest_latency;
1877 }
1878 break;
1879 case bulk_latency: /* 250 usec aka 4000 ints/s */
1880 if (bytes > 25000) {
1881 if (packets > 35) {
1882 retval = low_latency;
1883 }
1884 } else if (bytes < 6000) {
1885 retval = low_latency;
1886 }
1887 break;
1888 }
1889
1890update_itr_done:
1891 return retval;
1892}
1893
1894static void e1000_set_itr(struct e1000_adapter *adapter)
1895{
1896 struct e1000_hw *hw = &adapter->hw;
1897 u16 current_itr;
1898 u32 new_itr = adapter->itr;
1899
1900 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1901 if (adapter->link_speed != SPEED_1000) {
1902 current_itr = 0;
1903 new_itr = 4000;
1904 goto set_itr_now;
1905 }
1906
1907 adapter->tx_itr = e1000_update_itr(adapter,
1908 adapter->tx_itr,
1909 adapter->total_tx_packets,
1910 adapter->total_tx_bytes);
1911 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1912 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
1913 adapter->tx_itr = low_latency;
1914
1915 adapter->rx_itr = e1000_update_itr(adapter,
1916 adapter->rx_itr,
1917 adapter->total_rx_packets,
1918 adapter->total_rx_bytes);
1919 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1920 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
1921 adapter->rx_itr = low_latency;
1922
1923 current_itr = max(adapter->rx_itr, adapter->tx_itr);
1924
1925 switch (current_itr) {
1926 /* counts and packets in update_itr are dependent on these numbers */
1927 case lowest_latency:
1928 new_itr = 70000;
1929 break;
1930 case low_latency:
1931 new_itr = 20000; /* aka hwitr = ~200 */
1932 break;
1933 case bulk_latency:
1934 new_itr = 4000;
1935 break;
1936 default:
1937 break;
1938 }
1939
1940set_itr_now:
1941 if (new_itr != adapter->itr) {
Bruce Allanad680762008-03-28 09:15:03 -07001942 /*
1943 * this attempts to bias the interrupt rate towards Bulk
Auke Kokbc7f75f2007-09-17 12:30:59 -07001944 * by adding intermediate steps when interrupt rate is
Bruce Allanad680762008-03-28 09:15:03 -07001945 * increasing
1946 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001947 new_itr = new_itr > adapter->itr ?
1948 min(adapter->itr + (new_itr >> 2), new_itr) :
1949 new_itr;
1950 adapter->itr = new_itr;
Bruce Allan4662e822008-08-26 18:37:06 -07001951 adapter->rx_ring->itr_val = new_itr;
1952 if (adapter->msix_entries)
1953 adapter->rx_ring->set_itr = 1;
1954 else
1955 ew32(ITR, 1000000000 / (new_itr * 256));
Auke Kokbc7f75f2007-09-17 12:30:59 -07001956 }
1957}
1958
1959/**
Bruce Allan4662e822008-08-26 18:37:06 -07001960 * e1000_alloc_queues - Allocate memory for all rings
1961 * @adapter: board private structure to initialize
1962 **/
1963static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
1964{
1965 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
1966 if (!adapter->tx_ring)
1967 goto err;
1968
1969 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
1970 if (!adapter->rx_ring)
1971 goto err;
1972
1973 return 0;
1974err:
1975 e_err("Unable to allocate memory for queues\n");
1976 kfree(adapter->rx_ring);
1977 kfree(adapter->tx_ring);
1978 return -ENOMEM;
1979}
1980
1981/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07001982 * e1000_clean - NAPI Rx polling callback
Bruce Allanad680762008-03-28 09:15:03 -07001983 * @napi: struct associated with this polling callback
Auke Kok489815c2008-02-21 15:11:07 -08001984 * @budget: amount of packets driver is allowed to process this poll
Auke Kokbc7f75f2007-09-17 12:30:59 -07001985 **/
1986static int e1000_clean(struct napi_struct *napi, int budget)
1987{
1988 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
Bruce Allan4662e822008-08-26 18:37:06 -07001989 struct e1000_hw *hw = &adapter->hw;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001990 struct net_device *poll_dev = adapter->netdev;
David S. Millerd2c7ddd2008-01-15 22:43:24 -08001991 int tx_cleaned = 0, work_done = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001992
1993 /* Must NOT use netdev_priv macro here. */
1994 adapter = poll_dev->priv;
1995
Bruce Allan4662e822008-08-26 18:37:06 -07001996 if (adapter->msix_entries &&
1997 !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
1998 goto clean_rx;
1999
Bruce Allanad680762008-03-28 09:15:03 -07002000 /*
2001 * e1000_clean is called per-cpu. This lock protects
Auke Kokbc7f75f2007-09-17 12:30:59 -07002002 * tx_ring from being cleaned by multiple cpus
2003 * simultaneously. A failure obtaining the lock means
Bruce Allanad680762008-03-28 09:15:03 -07002004 * tx_ring is currently being cleaned anyway.
2005 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002006 if (spin_trylock(&adapter->tx_queue_lock)) {
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002007 tx_cleaned = e1000_clean_tx_irq(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002008 spin_unlock(&adapter->tx_queue_lock);
2009 }
2010
Bruce Allan4662e822008-08-26 18:37:06 -07002011clean_rx:
Auke Kokbc7f75f2007-09-17 12:30:59 -07002012 adapter->clean_rx(adapter, &work_done, budget);
2013
David S. Millerd2c7ddd2008-01-15 22:43:24 -08002014 if (tx_cleaned)
2015 work_done = budget;
2016
David S. Miller53e52c72008-01-07 21:06:12 -08002017 /* If budget not fully consumed, exit the polling mode */
2018 if (work_done < budget) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002019 if (adapter->itr_setting & 3)
2020 e1000_set_itr(adapter);
2021 netif_rx_complete(poll_dev, napi);
Bruce Allan4662e822008-08-26 18:37:06 -07002022 if (adapter->msix_entries)
2023 ew32(IMS, adapter->rx_ring->ims_val);
2024 else
2025 e1000_irq_enable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002026 }
2027
2028 return work_done;
2029}
2030
2031static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2032{
2033 struct e1000_adapter *adapter = netdev_priv(netdev);
2034 struct e1000_hw *hw = &adapter->hw;
2035 u32 vfta, index;
2036
2037 /* don't update vlan cookie if already programmed */
2038 if ((adapter->hw.mng_cookie.status &
2039 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2040 (vid == adapter->mng_vlan_id))
2041 return;
2042 /* add VID to filter table */
2043 index = (vid >> 5) & 0x7F;
2044 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2045 vfta |= (1 << (vid & 0x1F));
2046 e1000e_write_vfta(hw, index, vfta);
2047}
2048
2049static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2050{
2051 struct e1000_adapter *adapter = netdev_priv(netdev);
2052 struct e1000_hw *hw = &adapter->hw;
2053 u32 vfta, index;
2054
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002055 if (!test_bit(__E1000_DOWN, &adapter->state))
2056 e1000_irq_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002057 vlan_group_set_device(adapter->vlgrp, vid, NULL);
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002058
2059 if (!test_bit(__E1000_DOWN, &adapter->state))
2060 e1000_irq_enable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002061
2062 if ((adapter->hw.mng_cookie.status &
2063 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2064 (vid == adapter->mng_vlan_id)) {
2065 /* release control to f/w */
2066 e1000_release_hw_control(adapter);
2067 return;
2068 }
2069
2070 /* remove VID from filter table */
2071 index = (vid >> 5) & 0x7F;
2072 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2073 vfta &= ~(1 << (vid & 0x1F));
2074 e1000e_write_vfta(hw, index, vfta);
2075}
2076
2077static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2078{
2079 struct net_device *netdev = adapter->netdev;
2080 u16 vid = adapter->hw.mng_cookie.vlan_id;
2081 u16 old_vid = adapter->mng_vlan_id;
2082
2083 if (!adapter->vlgrp)
2084 return;
2085
2086 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
2087 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2088 if (adapter->hw.mng_cookie.status &
2089 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2090 e1000_vlan_rx_add_vid(netdev, vid);
2091 adapter->mng_vlan_id = vid;
2092 }
2093
2094 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
2095 (vid != old_vid) &&
2096 !vlan_group_get_device(adapter->vlgrp, old_vid))
2097 e1000_vlan_rx_kill_vid(netdev, old_vid);
2098 } else {
2099 adapter->mng_vlan_id = vid;
2100 }
2101}
2102
2103
2104static void e1000_vlan_rx_register(struct net_device *netdev,
2105 struct vlan_group *grp)
2106{
2107 struct e1000_adapter *adapter = netdev_priv(netdev);
2108 struct e1000_hw *hw = &adapter->hw;
2109 u32 ctrl, rctl;
2110
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002111 if (!test_bit(__E1000_DOWN, &adapter->state))
2112 e1000_irq_disable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002113 adapter->vlgrp = grp;
2114
2115 if (grp) {
2116 /* enable VLAN tag insert/strip */
2117 ctrl = er32(CTRL);
2118 ctrl |= E1000_CTRL_VME;
2119 ew32(CTRL, ctrl);
2120
2121 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2122 /* enable VLAN receive filtering */
2123 rctl = er32(RCTL);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002124 rctl &= ~E1000_RCTL_CFIEN;
2125 ew32(RCTL, rctl);
2126 e1000_update_mng_vlan(adapter);
2127 }
2128 } else {
2129 /* disable VLAN tag insert/strip */
2130 ctrl = er32(CTRL);
2131 ctrl &= ~E1000_CTRL_VME;
2132 ew32(CTRL, ctrl);
2133
2134 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07002135 if (adapter->mng_vlan_id !=
2136 (u16)E1000_MNG_VLAN_NONE) {
2137 e1000_vlan_rx_kill_vid(netdev,
2138 adapter->mng_vlan_id);
2139 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2140 }
2141 }
2142 }
2143
Jesse Brandeburg74ef9c32008-03-21 11:06:52 -07002144 if (!test_bit(__E1000_DOWN, &adapter->state))
2145 e1000_irq_enable(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002146}
2147
2148static void e1000_restore_vlan(struct e1000_adapter *adapter)
2149{
2150 u16 vid;
2151
2152 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2153
2154 if (!adapter->vlgrp)
2155 return;
2156
2157 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2158 if (!vlan_group_get_device(adapter->vlgrp, vid))
2159 continue;
2160 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2161 }
2162}
2163
2164static void e1000_init_manageability(struct e1000_adapter *adapter)
2165{
2166 struct e1000_hw *hw = &adapter->hw;
2167 u32 manc, manc2h;
2168
2169 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2170 return;
2171
2172 manc = er32(MANC);
2173
Bruce Allanad680762008-03-28 09:15:03 -07002174 /*
2175 * enable receiving management packets to the host. this will probably
Auke Kokbc7f75f2007-09-17 12:30:59 -07002176 * generate destination unreachable messages from the host OS, but
Bruce Allanad680762008-03-28 09:15:03 -07002177 * the packets will be handled on SMBUS
2178 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002179 manc |= E1000_MANC_EN_MNG2HOST;
2180 manc2h = er32(MANC2H);
2181#define E1000_MNG2HOST_PORT_623 (1 << 5)
2182#define E1000_MNG2HOST_PORT_664 (1 << 6)
2183 manc2h |= E1000_MNG2HOST_PORT_623;
2184 manc2h |= E1000_MNG2HOST_PORT_664;
2185 ew32(MANC2H, manc2h);
2186 ew32(MANC, manc);
2187}
2188
2189/**
2190 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2191 * @adapter: board private structure
2192 *
2193 * Configure the Tx unit of the MAC after a reset.
2194 **/
2195static void e1000_configure_tx(struct e1000_adapter *adapter)
2196{
2197 struct e1000_hw *hw = &adapter->hw;
2198 struct e1000_ring *tx_ring = adapter->tx_ring;
2199 u64 tdba;
2200 u32 tdlen, tctl, tipg, tarc;
2201 u32 ipgr1, ipgr2;
2202
2203 /* Setup the HW Tx Head and Tail descriptor pointers */
2204 tdba = tx_ring->dma;
2205 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2206 ew32(TDBAL, (tdba & DMA_32BIT_MASK));
2207 ew32(TDBAH, (tdba >> 32));
2208 ew32(TDLEN, tdlen);
2209 ew32(TDH, 0);
2210 ew32(TDT, 0);
2211 tx_ring->head = E1000_TDH;
2212 tx_ring->tail = E1000_TDT;
2213
2214 /* Set the default values for the Tx Inter Packet Gap timer */
2215 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
2216 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
2217 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
2218
2219 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
2220 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
2221
2222 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
2223 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
2224 ew32(TIPG, tipg);
2225
2226 /* Set the Tx Interrupt Delay register */
2227 ew32(TIDV, adapter->tx_int_delay);
Bruce Allanad680762008-03-28 09:15:03 -07002228 /* Tx irq moderation */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002229 ew32(TADV, adapter->tx_abs_int_delay);
2230
2231 /* Program the Transmit Control Register */
2232 tctl = er32(TCTL);
2233 tctl &= ~E1000_TCTL_CT;
2234 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
2235 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
2236
2237 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002238 tarc = er32(TARC(0));
Bruce Allanad680762008-03-28 09:15:03 -07002239 /*
2240 * set the speed mode bit, we'll clear it if we're not at
2241 * gigabit link later
2242 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002243#define SPEED_MODE_BIT (1 << 21)
2244 tarc |= SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002245 ew32(TARC(0), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002246 }
2247
2248 /* errata: program both queues to unweighted RR */
2249 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002250 tarc = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002251 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002252 ew32(TARC(0), tarc);
2253 tarc = er32(TARC(1));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002254 tarc |= 1;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07002255 ew32(TARC(1), tarc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002256 }
2257
2258 e1000e_config_collision_dist(hw);
2259
2260 /* Setup Transmit Descriptor Settings for eop descriptor */
2261 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2262
2263 /* only set IDE if we are delaying interrupts using the timers */
2264 if (adapter->tx_int_delay)
2265 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2266
2267 /* enable Report Status bit */
2268 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2269
2270 ew32(TCTL, tctl);
2271
2272 adapter->tx_queue_len = adapter->netdev->tx_queue_len;
2273}
2274
2275/**
2276 * e1000_setup_rctl - configure the receive control registers
2277 * @adapter: Board private structure
2278 **/
2279#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2280 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2281static void e1000_setup_rctl(struct e1000_adapter *adapter)
2282{
2283 struct e1000_hw *hw = &adapter->hw;
2284 u32 rctl, rfctl;
2285 u32 psrctl = 0;
2286 u32 pages = 0;
2287
2288 /* Program MC offset vector base */
2289 rctl = er32(RCTL);
2290 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2291 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2292 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2293 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2294
2295 /* Do not Store bad packets */
2296 rctl &= ~E1000_RCTL_SBP;
2297
2298 /* Enable Long Packet receive */
2299 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2300 rctl &= ~E1000_RCTL_LPE;
2301 else
2302 rctl |= E1000_RCTL_LPE;
2303
Auke Kok5918bd82008-02-12 15:20:24 -08002304 /* Enable hardware CRC frame stripping */
2305 rctl |= E1000_RCTL_SECRC;
2306
Auke Kokbc7f75f2007-09-17 12:30:59 -07002307 /* Setup buffer sizes */
2308 rctl &= ~E1000_RCTL_SZ_4096;
2309 rctl |= E1000_RCTL_BSEX;
2310 switch (adapter->rx_buffer_len) {
2311 case 256:
2312 rctl |= E1000_RCTL_SZ_256;
2313 rctl &= ~E1000_RCTL_BSEX;
2314 break;
2315 case 512:
2316 rctl |= E1000_RCTL_SZ_512;
2317 rctl &= ~E1000_RCTL_BSEX;
2318 break;
2319 case 1024:
2320 rctl |= E1000_RCTL_SZ_1024;
2321 rctl &= ~E1000_RCTL_BSEX;
2322 break;
2323 case 2048:
2324 default:
2325 rctl |= E1000_RCTL_SZ_2048;
2326 rctl &= ~E1000_RCTL_BSEX;
2327 break;
2328 case 4096:
2329 rctl |= E1000_RCTL_SZ_4096;
2330 break;
2331 case 8192:
2332 rctl |= E1000_RCTL_SZ_8192;
2333 break;
2334 case 16384:
2335 rctl |= E1000_RCTL_SZ_16384;
2336 break;
2337 }
2338
2339 /*
2340 * 82571 and greater support packet-split where the protocol
2341 * header is placed in skb->data and the packet data is
2342 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2343 * In the case of a non-split, skb->data is linearly filled,
2344 * followed by the page buffers. Therefore, skb->data is
2345 * sized to hold the largest protocol header.
2346 *
2347 * allocations using alloc_page take too long for regular MTU
2348 * so only enable packet split for jumbo frames
2349 *
2350 * Using pages when the page size is greater than 16k wastes
2351 * a lot of memory, since we allocate 3 pages at all times
2352 * per packet.
2353 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002354 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002355 if (!(adapter->flags & FLAG_IS_ICH) && (pages <= 3) &&
2356 (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002357 adapter->rx_ps_pages = pages;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002358 else
2359 adapter->rx_ps_pages = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002360
2361 if (adapter->rx_ps_pages) {
2362 /* Configure extra packet-split registers */
2363 rfctl = er32(RFCTL);
2364 rfctl |= E1000_RFCTL_EXTEN;
Bruce Allanad680762008-03-28 09:15:03 -07002365 /*
2366 * disable packet split support for IPv6 extension headers,
2367 * because some malformed IPv6 headers can hang the Rx
2368 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002369 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2370 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2371
2372 ew32(RFCTL, rfctl);
2373
Auke Kok140a7482007-10-25 13:57:58 -07002374 /* Enable Packet split descriptors */
2375 rctl |= E1000_RCTL_DTYP_PS;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002376
2377 psrctl |= adapter->rx_ps_bsize0 >>
2378 E1000_PSRCTL_BSIZE0_SHIFT;
2379
2380 switch (adapter->rx_ps_pages) {
2381 case 3:
2382 psrctl |= PAGE_SIZE <<
2383 E1000_PSRCTL_BSIZE3_SHIFT;
2384 case 2:
2385 psrctl |= PAGE_SIZE <<
2386 E1000_PSRCTL_BSIZE2_SHIFT;
2387 case 1:
2388 psrctl |= PAGE_SIZE >>
2389 E1000_PSRCTL_BSIZE1_SHIFT;
2390 break;
2391 }
2392
2393 ew32(PSRCTL, psrctl);
2394 }
2395
2396 ew32(RCTL, rctl);
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002397 /* just started the receive unit, no need to restart */
2398 adapter->flags &= ~FLAG_RX_RESTART_NOW;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002399}
2400
2401/**
2402 * e1000_configure_rx - Configure Receive Unit after Reset
2403 * @adapter: board private structure
2404 *
2405 * Configure the Rx unit of the MAC after a reset.
2406 **/
2407static void e1000_configure_rx(struct e1000_adapter *adapter)
2408{
2409 struct e1000_hw *hw = &adapter->hw;
2410 struct e1000_ring *rx_ring = adapter->rx_ring;
2411 u64 rdba;
2412 u32 rdlen, rctl, rxcsum, ctrl_ext;
2413
2414 if (adapter->rx_ps_pages) {
2415 /* this is a 32 byte descriptor */
2416 rdlen = rx_ring->count *
2417 sizeof(union e1000_rx_desc_packet_split);
2418 adapter->clean_rx = e1000_clean_rx_irq_ps;
2419 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002420 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
2421 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
2422 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
2423 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002424 } else {
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002425 rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002426 adapter->clean_rx = e1000_clean_rx_irq;
2427 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2428 }
2429
2430 /* disable receives while setting up the descriptors */
2431 rctl = er32(RCTL);
2432 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2433 e1e_flush();
2434 msleep(10);
2435
2436 /* set the Receive Delay Timer Register */
2437 ew32(RDTR, adapter->rx_int_delay);
2438
2439 /* irq moderation */
2440 ew32(RADV, adapter->rx_abs_int_delay);
2441 if (adapter->itr_setting != 0)
Bruce Allanad680762008-03-28 09:15:03 -07002442 ew32(ITR, 1000000000 / (adapter->itr * 256));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002443
2444 ctrl_ext = er32(CTRL_EXT);
2445 /* Reset delay timers after every interrupt */
2446 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
2447 /* Auto-Mask interrupts upon ICR access */
2448 ctrl_ext |= E1000_CTRL_EXT_IAME;
2449 ew32(IAM, 0xffffffff);
2450 ew32(CTRL_EXT, ctrl_ext);
2451 e1e_flush();
2452
Bruce Allanad680762008-03-28 09:15:03 -07002453 /*
2454 * Setup the HW Rx Head and Tail Descriptor Pointers and
2455 * the Base and Length of the Rx Descriptor Ring
2456 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002457 rdba = rx_ring->dma;
2458 ew32(RDBAL, (rdba & DMA_32BIT_MASK));
2459 ew32(RDBAH, (rdba >> 32));
2460 ew32(RDLEN, rdlen);
2461 ew32(RDH, 0);
2462 ew32(RDT, 0);
2463 rx_ring->head = E1000_RDH;
2464 rx_ring->tail = E1000_RDT;
2465
2466 /* Enable Receive Checksum Offload for TCP and UDP */
2467 rxcsum = er32(RXCSUM);
2468 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2469 rxcsum |= E1000_RXCSUM_TUOFL;
2470
Bruce Allanad680762008-03-28 09:15:03 -07002471 /*
2472 * IPv4 payload checksum for UDP fragments must be
2473 * used in conjunction with packet-split.
2474 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002475 if (adapter->rx_ps_pages)
2476 rxcsum |= E1000_RXCSUM_IPPCSE;
2477 } else {
2478 rxcsum &= ~E1000_RXCSUM_TUOFL;
2479 /* no need to clear IPPCSE as it defaults to 0 */
2480 }
2481 ew32(RXCSUM, rxcsum);
2482
Bruce Allanad680762008-03-28 09:15:03 -07002483 /*
2484 * Enable early receives on supported devices, only takes effect when
Auke Kokbc7f75f2007-09-17 12:30:59 -07002485 * packet size is equal or larger than the specified value (in 8 byte
Bruce Allanad680762008-03-28 09:15:03 -07002486 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2487 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002488 if ((adapter->flags & FLAG_HAS_ERT) &&
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002489 (adapter->netdev->mtu > ETH_DATA_LEN)) {
2490 u32 rxdctl = er32(RXDCTL(0));
2491 ew32(RXDCTL(0), rxdctl | 0x3);
2492 ew32(ERT, E1000_ERT_2048 | (1 << 13));
2493 /*
2494 * With jumbo frames and early-receive enabled, excessive
2495 * C4->C2 latencies result in dropped transactions.
2496 */
2497 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
2498 e1000e_driver_name, 55);
2499 } else {
2500 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
2501 e1000e_driver_name,
2502 PM_QOS_DEFAULT_VALUE);
2503 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002504
2505 /* Enable Receives */
2506 ew32(RCTL, rctl);
2507}
2508
2509/**
Jeff Kirshere2de3eb2008-03-28 09:15:11 -07002510 * e1000_update_mc_addr_list - Update Multicast addresses
Auke Kokbc7f75f2007-09-17 12:30:59 -07002511 * @hw: pointer to the HW structure
2512 * @mc_addr_list: array of multicast addresses to program
2513 * @mc_addr_count: number of multicast addresses to program
2514 * @rar_used_count: the first RAR register free to program
2515 * @rar_count: total number of supported Receive Address Registers
2516 *
2517 * Updates the Receive Address Registers and Multicast Table Array.
2518 * The caller must have a packed mc_addr_list of multicast addresses.
2519 * The parameter rar_count will usually be hw->mac.rar_entry_count
2520 * unless there are workarounds that change this. Currently no func pointer
2521 * exists and all implementations are handled in the generic version of this
2522 * function.
2523 **/
Jeff Kirshere2de3eb2008-03-28 09:15:11 -07002524static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
2525 u32 mc_addr_count, u32 rar_used_count,
2526 u32 rar_count)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002527{
Jeff Kirshere2de3eb2008-03-28 09:15:11 -07002528 hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count,
Auke Kokbc7f75f2007-09-17 12:30:59 -07002529 rar_used_count, rar_count);
2530}
2531
2532/**
2533 * e1000_set_multi - Multicast and Promiscuous mode set
2534 * @netdev: network interface device structure
2535 *
2536 * The set_multi entry point is called whenever the multicast address
2537 * list or the network interface flags are updated. This routine is
2538 * responsible for configuring the hardware for proper multicast,
2539 * promiscuous mode, and all-multi behavior.
2540 **/
2541static void e1000_set_multi(struct net_device *netdev)
2542{
2543 struct e1000_adapter *adapter = netdev_priv(netdev);
2544 struct e1000_hw *hw = &adapter->hw;
2545 struct e1000_mac_info *mac = &hw->mac;
2546 struct dev_mc_list *mc_ptr;
2547 u8 *mta_list;
2548 u32 rctl;
2549 int i;
2550
2551 /* Check for Promiscuous and All Multicast modes */
2552
2553 rctl = er32(RCTL);
2554
2555 if (netdev->flags & IFF_PROMISC) {
2556 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
Patrick McHardy746b9f02008-07-16 20:15:45 -07002557 rctl &= ~E1000_RCTL_VFE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002558 } else {
Patrick McHardy746b9f02008-07-16 20:15:45 -07002559 if (netdev->flags & IFF_ALLMULTI) {
2560 rctl |= E1000_RCTL_MPE;
2561 rctl &= ~E1000_RCTL_UPE;
2562 } else {
2563 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2564 }
Patrick McHardy78ed11a2008-07-16 20:16:14 -07002565 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
Patrick McHardy746b9f02008-07-16 20:15:45 -07002566 rctl |= E1000_RCTL_VFE;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002567 }
2568
2569 ew32(RCTL, rctl);
2570
2571 if (netdev->mc_count) {
2572 mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
2573 if (!mta_list)
2574 return;
2575
2576 /* prepare a packed array of only addresses. */
2577 mc_ptr = netdev->mc_list;
2578
2579 for (i = 0; i < netdev->mc_count; i++) {
2580 if (!mc_ptr)
2581 break;
2582 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
2583 ETH_ALEN);
2584 mc_ptr = mc_ptr->next;
2585 }
2586
Jeff Kirshere2de3eb2008-03-28 09:15:11 -07002587 e1000_update_mc_addr_list(hw, mta_list, i, 1,
Auke Kokbc7f75f2007-09-17 12:30:59 -07002588 mac->rar_entry_count);
2589 kfree(mta_list);
2590 } else {
2591 /*
2592 * if we're called from probe, we might not have
2593 * anything to do here, so clear out the list
2594 */
Jeff Kirshere2de3eb2008-03-28 09:15:11 -07002595 e1000_update_mc_addr_list(hw, NULL, 0, 1, mac->rar_entry_count);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002596 }
2597}
2598
2599/**
Bruce Allanad680762008-03-28 09:15:03 -07002600 * e1000_configure - configure the hardware for Rx and Tx
Auke Kokbc7f75f2007-09-17 12:30:59 -07002601 * @adapter: private board structure
2602 **/
2603static void e1000_configure(struct e1000_adapter *adapter)
2604{
2605 e1000_set_multi(adapter->netdev);
2606
2607 e1000_restore_vlan(adapter);
2608 e1000_init_manageability(adapter);
2609
2610 e1000_configure_tx(adapter);
2611 e1000_setup_rctl(adapter);
2612 e1000_configure_rx(adapter);
Bruce Allanad680762008-03-28 09:15:03 -07002613 adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002614}
2615
2616/**
2617 * e1000e_power_up_phy - restore link in case the phy was powered down
2618 * @adapter: address of board private structure
2619 *
2620 * The phy may be powered down to save power and turn off link when the
2621 * driver is unloaded and wake on lan is not enabled (among others)
2622 * *** this routine MUST be followed by a call to e1000e_reset ***
2623 **/
2624void e1000e_power_up_phy(struct e1000_adapter *adapter)
2625{
2626 u16 mii_reg = 0;
2627
2628 /* Just clear the power down bit to wake the phy back up */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002629 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
Bruce Allanad680762008-03-28 09:15:03 -07002630 /*
2631 * According to the manual, the phy will retain its
2632 * settings across a power-down/up cycle
2633 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002634 e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg);
2635 mii_reg &= ~MII_CR_POWER_DOWN;
2636 e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg);
2637 }
2638
2639 adapter->hw.mac.ops.setup_link(&adapter->hw);
2640}
2641
2642/**
2643 * e1000_power_down_phy - Power down the PHY
2644 *
2645 * Power down the PHY so no link is implied when interface is down
2646 * The PHY cannot be powered down is management or WoL is active
2647 */
2648static void e1000_power_down_phy(struct e1000_adapter *adapter)
2649{
2650 struct e1000_hw *hw = &adapter->hw;
2651 u16 mii_reg;
2652
2653 /* WoL is enabled */
Auke Kok23b66e22008-02-11 09:25:51 -08002654 if (adapter->wol)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002655 return;
2656
2657 /* non-copper PHY? */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002658 if (adapter->hw.phy.media_type != e1000_media_type_copper)
Auke Kokbc7f75f2007-09-17 12:30:59 -07002659 return;
2660
2661 /* reset is blocked because of a SoL/IDER session */
Bruce Allanad680762008-03-28 09:15:03 -07002662 if (e1000e_check_mng_mode(hw) || e1000_check_reset_block(hw))
Auke Kokbc7f75f2007-09-17 12:30:59 -07002663 return;
2664
Auke Kok489815c2008-02-21 15:11:07 -08002665 /* manageability (AMT) is enabled */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002666 if (er32(MANC) & E1000_MANC_SMBUS_EN)
2667 return;
2668
2669 /* power down the PHY */
2670 e1e_rphy(hw, PHY_CONTROL, &mii_reg);
2671 mii_reg |= MII_CR_POWER_DOWN;
2672 e1e_wphy(hw, PHY_CONTROL, mii_reg);
2673 mdelay(1);
2674}
2675
2676/**
2677 * e1000e_reset - bring the hardware into a known good state
2678 *
2679 * This function boots the hardware and enables some settings that
2680 * require a configuration cycle of the hardware - those cannot be
2681 * set/changed during runtime. After reset the device needs to be
Bruce Allanad680762008-03-28 09:15:03 -07002682 * properly configured for Rx, Tx etc.
Auke Kokbc7f75f2007-09-17 12:30:59 -07002683 */
2684void e1000e_reset(struct e1000_adapter *adapter)
2685{
2686 struct e1000_mac_info *mac = &adapter->hw.mac;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002687 struct e1000_fc_info *fc = &adapter->hw.fc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002688 struct e1000_hw *hw = &adapter->hw;
2689 u32 tx_space, min_tx_space, min_rx_space;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002690 u32 pba = adapter->pba;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002691 u16 hwm;
2692
Bruce Allanad680762008-03-28 09:15:03 -07002693 /* reset Packet Buffer Allocation to default */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002694 ew32(PBA, pba);
Auke Kokdf762462007-10-25 13:57:53 -07002695
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002696 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
Bruce Allanad680762008-03-28 09:15:03 -07002697 /*
2698 * To maintain wire speed transmits, the Tx FIFO should be
Auke Kokbc7f75f2007-09-17 12:30:59 -07002699 * large enough to accommodate two full transmit packets,
2700 * rounded up to the next 1KB and expressed in KB. Likewise,
2701 * the Rx FIFO should be large enough to accommodate at least
2702 * one full receive packet and is similarly rounded up and
Bruce Allanad680762008-03-28 09:15:03 -07002703 * expressed in KB.
2704 */
Auke Kokdf762462007-10-25 13:57:53 -07002705 pba = er32(PBA);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002706 /* upper 16 bits has Tx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07002707 tx_space = pba >> 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002708 /* lower 16 bits has Rx packet buffer allocation size in KB */
Auke Kokdf762462007-10-25 13:57:53 -07002709 pba &= 0xffff;
Bruce Allanad680762008-03-28 09:15:03 -07002710 /*
2711 * the Tx fifo also stores 16 bytes of information about the tx
2712 * but don't include ethernet FCS because hardware appends it
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002713 */
2714 min_tx_space = (adapter->max_frame_size +
Auke Kokbc7f75f2007-09-17 12:30:59 -07002715 sizeof(struct e1000_tx_desc) -
2716 ETH_FCS_LEN) * 2;
2717 min_tx_space = ALIGN(min_tx_space, 1024);
2718 min_tx_space >>= 10;
2719 /* software strips receive CRC, so leave room for it */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002720 min_rx_space = adapter->max_frame_size;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002721 min_rx_space = ALIGN(min_rx_space, 1024);
2722 min_rx_space >>= 10;
2723
Bruce Allanad680762008-03-28 09:15:03 -07002724 /*
2725 * If current Tx allocation is less than the min Tx FIFO size,
Auke Kokbc7f75f2007-09-17 12:30:59 -07002726 * and the min Tx FIFO size is less than the current Rx FIFO
Bruce Allanad680762008-03-28 09:15:03 -07002727 * allocation, take space away from current Rx allocation
2728 */
Auke Kokdf762462007-10-25 13:57:53 -07002729 if ((tx_space < min_tx_space) &&
2730 ((min_tx_space - tx_space) < pba)) {
2731 pba -= min_tx_space - tx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002732
Bruce Allanad680762008-03-28 09:15:03 -07002733 /*
2734 * if short on Rx space, Rx wins and must trump tx
2735 * adjustment or use Early Receive if available
2736 */
Auke Kokdf762462007-10-25 13:57:53 -07002737 if ((pba < min_rx_space) &&
Auke Kokbc7f75f2007-09-17 12:30:59 -07002738 (!(adapter->flags & FLAG_HAS_ERT)))
2739 /* ERT enabled in e1000_configure_rx */
Auke Kokdf762462007-10-25 13:57:53 -07002740 pba = min_rx_space;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002741 }
Auke Kokdf762462007-10-25 13:57:53 -07002742
2743 ew32(PBA, pba);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002744 }
2745
Auke Kokbc7f75f2007-09-17 12:30:59 -07002746
Bruce Allanad680762008-03-28 09:15:03 -07002747 /*
2748 * flow control settings
2749 *
2750 * The high water mark must be low enough to fit one full frame
Auke Kokbc7f75f2007-09-17 12:30:59 -07002751 * (or the size used for early receive) above it in the Rx FIFO.
2752 * Set it to the lower of:
2753 * - 90% of the Rx FIFO size, and
2754 * - the full Rx FIFO size minus the early receive size (for parts
2755 * with ERT support assuming ERT set to E1000_ERT_2048), or
Bruce Allanad680762008-03-28 09:15:03 -07002756 * - the full Rx FIFO size minus one full frame
2757 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002758 if (adapter->flags & FLAG_HAS_ERT)
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002759 hwm = min(((pba << 10) * 9 / 10),
2760 ((pba << 10) - (E1000_ERT_2048 << 3)));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002761 else
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002762 hwm = min(((pba << 10) * 9 / 10),
2763 ((pba << 10) - adapter->max_frame_size));
Auke Kokbc7f75f2007-09-17 12:30:59 -07002764
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002765 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
2766 fc->low_water = fc->high_water - 8;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002767
2768 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002769 fc->pause_time = 0xFFFF;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002770 else
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002771 fc->pause_time = E1000_FC_PAUSE_TIME;
2772 fc->send_xon = 1;
2773 fc->type = fc->original_type;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002774
2775 /* Allow time for pending master requests to run */
2776 mac->ops.reset_hw(hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002777
2778 /*
2779 * For parts with AMT enabled, let the firmware know
2780 * that the network interface is in control
2781 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07002782 if (adapter->flags & FLAG_HAS_AMT)
Bruce Allan97ac8ca2008-04-29 09:16:05 -07002783 e1000_get_hw_control(adapter);
2784
Auke Kokbc7f75f2007-09-17 12:30:59 -07002785 ew32(WUC, 0);
2786
2787 if (mac->ops.init_hw(hw))
Jeff Kirsher44defeb2008-08-04 17:20:41 -07002788 e_err("Hardware Error\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07002789
2790 e1000_update_mng_vlan(adapter);
2791
2792 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2793 ew32(VET, ETH_P_8021Q);
2794
2795 e1000e_reset_adaptive(hw);
2796 e1000_get_phy_info(hw);
2797
2798 if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) {
2799 u16 phy_data = 0;
Bruce Allanad680762008-03-28 09:15:03 -07002800 /*
2801 * speed up time to link by disabling smart power down, ignore
Auke Kokbc7f75f2007-09-17 12:30:59 -07002802 * the return value of this function because there is nothing
Bruce Allanad680762008-03-28 09:15:03 -07002803 * different we would do if it failed
2804 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002805 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
2806 phy_data &= ~IGP02E1000_PM_SPD;
2807 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
2808 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07002809}
2810
2811int e1000e_up(struct e1000_adapter *adapter)
2812{
2813 struct e1000_hw *hw = &adapter->hw;
2814
2815 /* hardware has been reset, we need to reload some things */
2816 e1000_configure(adapter);
2817
2818 clear_bit(__E1000_DOWN, &adapter->state);
2819
2820 napi_enable(&adapter->napi);
Bruce Allan4662e822008-08-26 18:37:06 -07002821 if (adapter->msix_entries)
2822 e1000_configure_msix(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002823 e1000_irq_enable(adapter);
2824
2825 /* fire a link change interrupt to start the watchdog */
2826 ew32(ICS, E1000_ICS_LSC);
2827 return 0;
2828}
2829
2830void e1000e_down(struct e1000_adapter *adapter)
2831{
2832 struct net_device *netdev = adapter->netdev;
2833 struct e1000_hw *hw = &adapter->hw;
2834 u32 tctl, rctl;
2835
Bruce Allanad680762008-03-28 09:15:03 -07002836 /*
2837 * signal that we're down so the interrupt handler does not
2838 * reschedule our watchdog timer
2839 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002840 set_bit(__E1000_DOWN, &adapter->state);
2841
2842 /* disable receives in the hardware */
2843 rctl = er32(RCTL);
2844 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2845 /* flush and sleep below */
2846
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07002847 netif_tx_stop_all_queues(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002848
2849 /* disable transmits in the hardware */
2850 tctl = er32(TCTL);
2851 tctl &= ~E1000_TCTL_EN;
2852 ew32(TCTL, tctl);
2853 /* flush both disables and wait for them to finish */
2854 e1e_flush();
2855 msleep(10);
2856
2857 napi_disable(&adapter->napi);
2858 e1000_irq_disable(adapter);
2859
2860 del_timer_sync(&adapter->watchdog_timer);
2861 del_timer_sync(&adapter->phy_info_timer);
2862
2863 netdev->tx_queue_len = adapter->tx_queue_len;
2864 netif_carrier_off(netdev);
2865 adapter->link_speed = 0;
2866 adapter->link_duplex = 0;
2867
Jeff Kirsher52cc3082008-06-24 17:01:29 -07002868 if (!pci_channel_offline(adapter->pdev))
2869 e1000e_reset(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002870 e1000_clean_tx_ring(adapter);
2871 e1000_clean_rx_ring(adapter);
2872
2873 /*
2874 * TODO: for power management, we could drop the link and
2875 * pci_disable_device here.
2876 */
2877}
2878
2879void e1000e_reinit_locked(struct e1000_adapter *adapter)
2880{
2881 might_sleep();
2882 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
2883 msleep(1);
2884 e1000e_down(adapter);
2885 e1000e_up(adapter);
2886 clear_bit(__E1000_RESETTING, &adapter->state);
2887}
2888
2889/**
2890 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2891 * @adapter: board private structure to initialize
2892 *
2893 * e1000_sw_init initializes the Adapter private data structure.
2894 * Fields are initialized based on PCI device information and
2895 * OS network device settings (MTU size).
2896 **/
2897static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
2898{
Auke Kokbc7f75f2007-09-17 12:30:59 -07002899 struct net_device *netdev = adapter->netdev;
2900
2901 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
2902 adapter->rx_ps_bsize0 = 128;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07002903 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2904 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002905
Bruce Allan4662e822008-08-26 18:37:06 -07002906 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07002907
Bruce Allan4662e822008-08-26 18:37:06 -07002908 if (e1000_alloc_queues(adapter))
2909 return -ENOMEM;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002910
2911 spin_lock_init(&adapter->tx_queue_lock);
2912
2913 /* Explicitly disable IRQ since the NIC can be in any state. */
Auke Kokbc7f75f2007-09-17 12:30:59 -07002914 e1000_irq_disable(adapter);
2915
Auke Kokbc7f75f2007-09-17 12:30:59 -07002916 set_bit(__E1000_DOWN, &adapter->state);
2917 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07002918}
2919
2920/**
Bruce Allanf8d59f72008-08-08 18:36:11 -07002921 * e1000_intr_msi_test - Interrupt Handler
2922 * @irq: interrupt number
2923 * @data: pointer to a network interface device structure
2924 **/
2925static irqreturn_t e1000_intr_msi_test(int irq, void *data)
2926{
2927 struct net_device *netdev = data;
2928 struct e1000_adapter *adapter = netdev_priv(netdev);
2929 struct e1000_hw *hw = &adapter->hw;
2930 u32 icr = er32(ICR);
2931
2932 e_dbg("%s: icr is %08X\n", netdev->name, icr);
2933 if (icr & E1000_ICR_RXSEQ) {
2934 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
2935 wmb();
2936 }
2937
2938 return IRQ_HANDLED;
2939}
2940
2941/**
2942 * e1000_test_msi_interrupt - Returns 0 for successful test
2943 * @adapter: board private struct
2944 *
2945 * code flow taken from tg3.c
2946 **/
2947static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
2948{
2949 struct net_device *netdev = adapter->netdev;
2950 struct e1000_hw *hw = &adapter->hw;
2951 int err;
2952
2953 /* poll_enable hasn't been called yet, so don't need disable */
2954 /* clear any pending events */
2955 er32(ICR);
2956
2957 /* free the real vector and request a test handler */
2958 e1000_free_irq(adapter);
Bruce Allan4662e822008-08-26 18:37:06 -07002959 e1000e_reset_interrupt_capability(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07002960
2961 /* Assume that the test fails, if it succeeds then the test
2962 * MSI irq handler will unset this flag */
2963 adapter->flags |= FLAG_MSI_TEST_FAILED;
2964
2965 err = pci_enable_msi(adapter->pdev);
2966 if (err)
2967 goto msi_test_failed;
2968
2969 err = request_irq(adapter->pdev->irq, &e1000_intr_msi_test, 0,
2970 netdev->name, netdev);
2971 if (err) {
2972 pci_disable_msi(adapter->pdev);
2973 goto msi_test_failed;
2974 }
2975
2976 wmb();
2977
2978 e1000_irq_enable(adapter);
2979
2980 /* fire an unusual interrupt on the test handler */
2981 ew32(ICS, E1000_ICS_RXSEQ);
2982 e1e_flush();
2983 msleep(50);
2984
2985 e1000_irq_disable(adapter);
2986
2987 rmb();
2988
2989 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
Bruce Allan4662e822008-08-26 18:37:06 -07002990 adapter->int_mode = E1000E_INT_MODE_LEGACY;
Bruce Allanf8d59f72008-08-08 18:36:11 -07002991 err = -EIO;
2992 e_info("MSI interrupt test failed!\n");
2993 }
2994
2995 free_irq(adapter->pdev->irq, netdev);
2996 pci_disable_msi(adapter->pdev);
2997
2998 if (err == -EIO)
2999 goto msi_test_failed;
3000
3001 /* okay so the test worked, restore settings */
3002 e_dbg("%s: MSI interrupt test succeeded!\n", netdev->name);
3003msi_test_failed:
Bruce Allan4662e822008-08-26 18:37:06 -07003004 e1000e_set_interrupt_capability(adapter);
Bruce Allanf8d59f72008-08-08 18:36:11 -07003005 e1000_request_irq(adapter);
3006 return err;
3007}
3008
3009/**
3010 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3011 * @adapter: board private struct
3012 *
3013 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3014 **/
3015static int e1000_test_msi(struct e1000_adapter *adapter)
3016{
3017 int err;
3018 u16 pci_cmd;
3019
3020 if (!(adapter->flags & FLAG_MSI_ENABLED))
3021 return 0;
3022
3023 /* disable SERR in case the MSI write causes a master abort */
3024 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3025 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3026 pci_cmd & ~PCI_COMMAND_SERR);
3027
3028 err = e1000_test_msi_interrupt(adapter);
3029
3030 /* restore previous setting of command word */
3031 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3032
3033 /* success ! */
3034 if (!err)
3035 return 0;
3036
3037 /* EIO means MSI test failed */
3038 if (err != -EIO)
3039 return err;
3040
3041 /* back to INTx mode */
3042 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3043
3044 e1000_free_irq(adapter);
3045
3046 err = e1000_request_irq(adapter);
3047
3048 return err;
3049}
3050
3051/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07003052 * e1000_open - Called when a network interface is made active
3053 * @netdev: network interface device structure
3054 *
3055 * Returns 0 on success, negative value on failure
3056 *
3057 * The open entry point is called when a network interface is made
3058 * active by the system (IFF_UP). At this point all resources needed
3059 * for transmit and receive operations are allocated, the interrupt
3060 * handler is registered with the OS, the watchdog timer is started,
3061 * and the stack is notified that the interface is ready.
3062 **/
3063static int e1000_open(struct net_device *netdev)
3064{
3065 struct e1000_adapter *adapter = netdev_priv(netdev);
3066 struct e1000_hw *hw = &adapter->hw;
3067 int err;
3068
3069 /* disallow open during test */
3070 if (test_bit(__E1000_TESTING, &adapter->state))
3071 return -EBUSY;
3072
3073 /* allocate transmit descriptors */
3074 err = e1000e_setup_tx_resources(adapter);
3075 if (err)
3076 goto err_setup_tx;
3077
3078 /* allocate receive descriptors */
3079 err = e1000e_setup_rx_resources(adapter);
3080 if (err)
3081 goto err_setup_rx;
3082
3083 e1000e_power_up_phy(adapter);
3084
3085 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3086 if ((adapter->hw.mng_cookie.status &
3087 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3088 e1000_update_mng_vlan(adapter);
3089
Bruce Allanad680762008-03-28 09:15:03 -07003090 /*
3091 * If AMT is enabled, let the firmware know that the network
3092 * interface is now open
3093 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07003094 if (adapter->flags & FLAG_HAS_AMT)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003095 e1000_get_hw_control(adapter);
3096
Bruce Allanad680762008-03-28 09:15:03 -07003097 /*
3098 * before we allocate an interrupt, we must be ready to handle it.
Auke Kokbc7f75f2007-09-17 12:30:59 -07003099 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3100 * as soon as we call pci_request_irq, so we have to setup our
Bruce Allanad680762008-03-28 09:15:03 -07003101 * clean_rx handler before we do so.
3102 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003103 e1000_configure(adapter);
3104
3105 err = e1000_request_irq(adapter);
3106 if (err)
3107 goto err_req_irq;
3108
Bruce Allanf8d59f72008-08-08 18:36:11 -07003109 /*
3110 * Work around PCIe errata with MSI interrupts causing some chipsets to
3111 * ignore e1000e MSI messages, which means we need to test our MSI
3112 * interrupt now
3113 */
Bruce Allan4662e822008-08-26 18:37:06 -07003114 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
Bruce Allanf8d59f72008-08-08 18:36:11 -07003115 err = e1000_test_msi(adapter);
3116 if (err) {
3117 e_err("Interrupt allocation failed\n");
3118 goto err_req_irq;
3119 }
3120 }
3121
Auke Kokbc7f75f2007-09-17 12:30:59 -07003122 /* From here on the code is the same as e1000e_up() */
3123 clear_bit(__E1000_DOWN, &adapter->state);
3124
3125 napi_enable(&adapter->napi);
3126
3127 e1000_irq_enable(adapter);
3128
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003129 netif_tx_start_all_queues(netdev);
3130
Auke Kokbc7f75f2007-09-17 12:30:59 -07003131 /* fire a link status change interrupt to start the watchdog */
3132 ew32(ICS, E1000_ICS_LSC);
3133
3134 return 0;
3135
3136err_req_irq:
3137 e1000_release_hw_control(adapter);
3138 e1000_power_down_phy(adapter);
3139 e1000e_free_rx_resources(adapter);
3140err_setup_rx:
3141 e1000e_free_tx_resources(adapter);
3142err_setup_tx:
3143 e1000e_reset(adapter);
3144
3145 return err;
3146}
3147
3148/**
3149 * e1000_close - Disables a network interface
3150 * @netdev: network interface device structure
3151 *
3152 * Returns 0, this is not allowed to fail
3153 *
3154 * The close entry point is called when an interface is de-activated
3155 * by the OS. The hardware is still under the drivers control, but
3156 * needs to be disabled. A global MAC reset is issued to stop the
3157 * hardware, and all transmit and receive resources are freed.
3158 **/
3159static int e1000_close(struct net_device *netdev)
3160{
3161 struct e1000_adapter *adapter = netdev_priv(netdev);
3162
3163 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3164 e1000e_down(adapter);
3165 e1000_power_down_phy(adapter);
3166 e1000_free_irq(adapter);
3167
3168 e1000e_free_tx_resources(adapter);
3169 e1000e_free_rx_resources(adapter);
3170
Bruce Allanad680762008-03-28 09:15:03 -07003171 /*
3172 * kill manageability vlan ID if supported, but not if a vlan with
3173 * the same ID is registered on the host OS (let 8021q kill it)
3174 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003175 if ((adapter->hw.mng_cookie.status &
3176 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
3177 !(adapter->vlgrp &&
3178 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
3179 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
3180
Bruce Allanad680762008-03-28 09:15:03 -07003181 /*
3182 * If AMT is enabled, let the firmware know that the network
3183 * interface is now closed
3184 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07003185 if (adapter->flags & FLAG_HAS_AMT)
Auke Kokbc7f75f2007-09-17 12:30:59 -07003186 e1000_release_hw_control(adapter);
3187
3188 return 0;
3189}
3190/**
3191 * e1000_set_mac - Change the Ethernet Address of the NIC
3192 * @netdev: network interface device structure
3193 * @p: pointer to an address structure
3194 *
3195 * Returns 0 on success, negative on failure
3196 **/
3197static int e1000_set_mac(struct net_device *netdev, void *p)
3198{
3199 struct e1000_adapter *adapter = netdev_priv(netdev);
3200 struct sockaddr *addr = p;
3201
3202 if (!is_valid_ether_addr(addr->sa_data))
3203 return -EADDRNOTAVAIL;
3204
3205 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3206 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
3207
3208 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
3209
3210 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
3211 /* activate the work around */
3212 e1000e_set_laa_state_82571(&adapter->hw, 1);
3213
Bruce Allanad680762008-03-28 09:15:03 -07003214 /*
3215 * Hold a copy of the LAA in RAR[14] This is done so that
Auke Kokbc7f75f2007-09-17 12:30:59 -07003216 * between the time RAR[0] gets clobbered and the time it
3217 * gets fixed (in e1000_watchdog), the actual LAA is in one
3218 * of the RARs and no incoming packets directed to this port
3219 * are dropped. Eventually the LAA will be in RAR[0] and
Bruce Allanad680762008-03-28 09:15:03 -07003220 * RAR[14]
3221 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003222 e1000e_rar_set(&adapter->hw,
3223 adapter->hw.mac.addr,
3224 adapter->hw.mac.rar_entry_count - 1);
3225 }
3226
3227 return 0;
3228}
3229
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07003230/**
3231 * e1000e_update_phy_task - work thread to update phy
3232 * @work: pointer to our work struct
3233 *
3234 * this worker thread exists because we must acquire a
3235 * semaphore to read the phy, which we could msleep while
3236 * waiting for it, and we can't msleep in a timer.
3237 **/
3238static void e1000e_update_phy_task(struct work_struct *work)
3239{
3240 struct e1000_adapter *adapter = container_of(work,
3241 struct e1000_adapter, update_phy_task);
3242 e1000_get_phy_info(&adapter->hw);
3243}
3244
Bruce Allanad680762008-03-28 09:15:03 -07003245/*
3246 * Need to wait a few seconds after link up to get diagnostic information from
3247 * the phy
3248 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003249static void e1000_update_phy_info(unsigned long data)
3250{
3251 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07003252 schedule_work(&adapter->update_phy_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003253}
3254
3255/**
3256 * e1000e_update_stats - Update the board statistics counters
3257 * @adapter: board private structure
3258 **/
3259void e1000e_update_stats(struct e1000_adapter *adapter)
3260{
3261 struct e1000_hw *hw = &adapter->hw;
3262 struct pci_dev *pdev = adapter->pdev;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003263
3264 /*
3265 * Prevent stats update while adapter is being reset, or if the pci
3266 * connection is down.
3267 */
3268 if (adapter->link_speed == 0)
3269 return;
3270 if (pci_channel_offline(pdev))
3271 return;
3272
Auke Kokbc7f75f2007-09-17 12:30:59 -07003273 adapter->stats.crcerrs += er32(CRCERRS);
3274 adapter->stats.gprc += er32(GPRC);
Bruce Allan7c257692008-04-23 11:09:00 -07003275 adapter->stats.gorc += er32(GORCL);
3276 er32(GORCH); /* Clear gorc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003277 adapter->stats.bprc += er32(BPRC);
3278 adapter->stats.mprc += er32(MPRC);
3279 adapter->stats.roc += er32(ROC);
3280
Auke Kokbc7f75f2007-09-17 12:30:59 -07003281 adapter->stats.mpc += er32(MPC);
3282 adapter->stats.scc += er32(SCC);
3283 adapter->stats.ecol += er32(ECOL);
3284 adapter->stats.mcc += er32(MCC);
3285 adapter->stats.latecol += er32(LATECOL);
3286 adapter->stats.dc += er32(DC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003287 adapter->stats.xonrxc += er32(XONRXC);
3288 adapter->stats.xontxc += er32(XONTXC);
3289 adapter->stats.xoffrxc += er32(XOFFRXC);
3290 adapter->stats.xofftxc += er32(XOFFTXC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003291 adapter->stats.gptc += er32(GPTC);
Bruce Allan7c257692008-04-23 11:09:00 -07003292 adapter->stats.gotc += er32(GOTCL);
3293 er32(GOTCH); /* Clear gotc */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003294 adapter->stats.rnbc += er32(RNBC);
3295 adapter->stats.ruc += er32(RUC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003296
3297 adapter->stats.mptc += er32(MPTC);
3298 adapter->stats.bptc += er32(BPTC);
3299
3300 /* used for adaptive IFS */
3301
3302 hw->mac.tx_packet_delta = er32(TPT);
3303 adapter->stats.tpt += hw->mac.tx_packet_delta;
3304 hw->mac.collision_delta = er32(COLC);
3305 adapter->stats.colc += hw->mac.collision_delta;
3306
3307 adapter->stats.algnerrc += er32(ALGNERRC);
3308 adapter->stats.rxerrc += er32(RXERRC);
Bruce Allan4662e822008-08-26 18:37:06 -07003309 if (hw->mac.type != e1000_82574)
3310 adapter->stats.tncrs += er32(TNCRS);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003311 adapter->stats.cexterr += er32(CEXTERR);
3312 adapter->stats.tsctc += er32(TSCTC);
3313 adapter->stats.tsctfc += er32(TSCTFC);
3314
Auke Kokbc7f75f2007-09-17 12:30:59 -07003315 /* Fill out the OS statistics structure */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003316 adapter->net_stats.multicast = adapter->stats.mprc;
3317 adapter->net_stats.collisions = adapter->stats.colc;
3318
3319 /* Rx Errors */
3320
Bruce Allanad680762008-03-28 09:15:03 -07003321 /*
3322 * RLEC on some newer hardware can be incorrect so build
3323 * our own version based on RUC and ROC
3324 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003325 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3326 adapter->stats.crcerrs + adapter->stats.algnerrc +
3327 adapter->stats.ruc + adapter->stats.roc +
3328 adapter->stats.cexterr;
3329 adapter->net_stats.rx_length_errors = adapter->stats.ruc +
3330 adapter->stats.roc;
3331 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3332 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3333 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3334
3335 /* Tx Errors */
3336 adapter->net_stats.tx_errors = adapter->stats.ecol +
3337 adapter->stats.latecol;
3338 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3339 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3340 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3341
3342 /* Tx Dropped needs to be maintained elsewhere */
3343
Auke Kokbc7f75f2007-09-17 12:30:59 -07003344 /* Management Stats */
3345 adapter->stats.mgptc += er32(MGTPTC);
3346 adapter->stats.mgprc += er32(MGTPRC);
3347 adapter->stats.mgpdc += er32(MGTPDC);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003348}
3349
Bruce Allan7c257692008-04-23 11:09:00 -07003350/**
3351 * e1000_phy_read_status - Update the PHY register status snapshot
3352 * @adapter: board private structure
3353 **/
3354static void e1000_phy_read_status(struct e1000_adapter *adapter)
3355{
3356 struct e1000_hw *hw = &adapter->hw;
3357 struct e1000_phy_regs *phy = &adapter->phy_regs;
3358 int ret_val;
Bruce Allan7c257692008-04-23 11:09:00 -07003359
3360 if ((er32(STATUS) & E1000_STATUS_LU) &&
3361 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
3362 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
3363 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
3364 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
3365 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
3366 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
3367 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
3368 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
3369 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
3370 if (ret_val)
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003371 e_warn("Error reading PHY register\n");
Bruce Allan7c257692008-04-23 11:09:00 -07003372 } else {
3373 /*
3374 * Do not read PHY registers if link is not up
3375 * Set values to typical power-on defaults
3376 */
3377 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
3378 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
3379 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
3380 BMSR_ERCAP);
3381 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
3382 ADVERTISE_ALL | ADVERTISE_CSMA);
3383 phy->lpa = 0;
3384 phy->expansion = EXPANSION_ENABLENPAGE;
3385 phy->ctrl1000 = ADVERTISE_1000FULL;
3386 phy->stat1000 = 0;
3387 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
3388 }
Bruce Allan7c257692008-04-23 11:09:00 -07003389}
3390
Auke Kokbc7f75f2007-09-17 12:30:59 -07003391static void e1000_print_link_info(struct e1000_adapter *adapter)
3392{
Auke Kokbc7f75f2007-09-17 12:30:59 -07003393 struct e1000_hw *hw = &adapter->hw;
3394 u32 ctrl = er32(CTRL);
3395
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003396 e_info("Link is Up %d Mbps %s, Flow Control: %s\n",
3397 adapter->link_speed,
3398 (adapter->link_duplex == FULL_DUPLEX) ?
3399 "Full Duplex" : "Half Duplex",
3400 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
3401 "RX/TX" :
3402 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
3403 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
Auke Kokbc7f75f2007-09-17 12:30:59 -07003404}
3405
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003406static bool e1000_has_link(struct e1000_adapter *adapter)
3407{
3408 struct e1000_hw *hw = &adapter->hw;
3409 bool link_active = 0;
3410 s32 ret_val = 0;
3411
3412 /*
3413 * get_link_status is set on LSC (link status) interrupt or
3414 * Rx sequence error interrupt. get_link_status will stay
3415 * false until the check_for_link establishes link
3416 * for copper adapters ONLY
3417 */
3418 switch (hw->phy.media_type) {
3419 case e1000_media_type_copper:
3420 if (hw->mac.get_link_status) {
3421 ret_val = hw->mac.ops.check_for_link(hw);
3422 link_active = !hw->mac.get_link_status;
3423 } else {
3424 link_active = 1;
3425 }
3426 break;
3427 case e1000_media_type_fiber:
3428 ret_val = hw->mac.ops.check_for_link(hw);
3429 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
3430 break;
3431 case e1000_media_type_internal_serdes:
3432 ret_val = hw->mac.ops.check_for_link(hw);
3433 link_active = adapter->hw.mac.serdes_has_link;
3434 break;
3435 default:
3436 case e1000_media_type_unknown:
3437 break;
3438 }
3439
3440 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
3441 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
3442 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003443 e_info("Gigabit has been disabled, downgrading speed\n");
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003444 }
3445
3446 return link_active;
3447}
3448
3449static void e1000e_enable_receives(struct e1000_adapter *adapter)
3450{
3451 /* make sure the receive unit is started */
3452 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
3453 (adapter->flags & FLAG_RX_RESTART_NOW)) {
3454 struct e1000_hw *hw = &adapter->hw;
3455 u32 rctl = er32(RCTL);
3456 ew32(RCTL, rctl | E1000_RCTL_EN);
3457 adapter->flags &= ~FLAG_RX_RESTART_NOW;
3458 }
3459}
3460
Auke Kokbc7f75f2007-09-17 12:30:59 -07003461/**
3462 * e1000_watchdog - Timer Call-back
3463 * @data: pointer to adapter cast into an unsigned long
3464 **/
3465static void e1000_watchdog(unsigned long data)
3466{
3467 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
3468
3469 /* Do the rest outside of interrupt context */
3470 schedule_work(&adapter->watchdog_task);
3471
3472 /* TODO: make this use queue_delayed_work() */
3473}
3474
3475static void e1000_watchdog_task(struct work_struct *work)
3476{
3477 struct e1000_adapter *adapter = container_of(work,
3478 struct e1000_adapter, watchdog_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003479 struct net_device *netdev = adapter->netdev;
3480 struct e1000_mac_info *mac = &adapter->hw.mac;
3481 struct e1000_ring *tx_ring = adapter->tx_ring;
3482 struct e1000_hw *hw = &adapter->hw;
3483 u32 link, tctl;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003484 int tx_pending = 0;
3485
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003486 link = e1000_has_link(adapter);
3487 if ((netif_carrier_ok(netdev)) && link) {
3488 e1000e_enable_receives(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003489 goto link_up;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003490 }
3491
3492 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
3493 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
3494 e1000_update_mng_vlan(adapter);
3495
Auke Kokbc7f75f2007-09-17 12:30:59 -07003496 if (link) {
3497 if (!netif_carrier_ok(netdev)) {
3498 bool txb2b = 1;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07003499 /* update snapshot of PHY registers on LSC */
Bruce Allan7c257692008-04-23 11:09:00 -07003500 e1000_phy_read_status(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003501 mac->ops.get_link_up_info(&adapter->hw,
3502 &adapter->link_speed,
3503 &adapter->link_duplex);
3504 e1000_print_link_info(adapter);
Bruce Allanad680762008-03-28 09:15:03 -07003505 /*
Bruce Allanf4187b52008-08-26 18:36:50 -07003506 * On supported PHYs, check for duplex mismatch only
3507 * if link has autonegotiated at 10/100 half
3508 */
3509 if ((hw->phy.type == e1000_phy_igp_3 ||
3510 hw->phy.type == e1000_phy_bm) &&
3511 (hw->mac.autoneg == true) &&
3512 (adapter->link_speed == SPEED_10 ||
3513 adapter->link_speed == SPEED_100) &&
3514 (adapter->link_duplex == HALF_DUPLEX)) {
3515 u16 autoneg_exp;
3516
3517 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
3518
3519 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
3520 e_info("Autonegotiated half duplex but"
3521 " link partner cannot autoneg. "
3522 " Try forcing full duplex if "
3523 "link gets many collisions.\n");
3524 }
3525
3526 /*
Bruce Allanad680762008-03-28 09:15:03 -07003527 * tweak tx_queue_len according to speed/duplex
3528 * and adjust the timeout factor
3529 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003530 netdev->tx_queue_len = adapter->tx_queue_len;
3531 adapter->tx_timeout_factor = 1;
3532 switch (adapter->link_speed) {
3533 case SPEED_10:
3534 txb2b = 0;
3535 netdev->tx_queue_len = 10;
Bruce Allan10f1b492008-08-08 18:36:01 -07003536 adapter->tx_timeout_factor = 16;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003537 break;
3538 case SPEED_100:
3539 txb2b = 0;
3540 netdev->tx_queue_len = 100;
3541 /* maybe add some timeout factor ? */
3542 break;
3543 }
3544
Bruce Allanad680762008-03-28 09:15:03 -07003545 /*
3546 * workaround: re-program speed mode bit after
3547 * link-up event
3548 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003549 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
3550 !txb2b) {
3551 u32 tarc0;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07003552 tarc0 = er32(TARC(0));
Auke Kokbc7f75f2007-09-17 12:30:59 -07003553 tarc0 &= ~SPEED_MODE_BIT;
Jeff Kirshere9ec2c02008-04-02 13:48:13 -07003554 ew32(TARC(0), tarc0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003555 }
3556
Bruce Allanad680762008-03-28 09:15:03 -07003557 /*
3558 * disable TSO for pcie and 10/100 speeds, to avoid
3559 * some hardware issues
3560 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003561 if (!(adapter->flags & FLAG_TSO_FORCE)) {
3562 switch (adapter->link_speed) {
3563 case SPEED_10:
3564 case SPEED_100:
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003565 e_info("10/100 speed: disabling TSO\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07003566 netdev->features &= ~NETIF_F_TSO;
3567 netdev->features &= ~NETIF_F_TSO6;
3568 break;
3569 case SPEED_1000:
3570 netdev->features |= NETIF_F_TSO;
3571 netdev->features |= NETIF_F_TSO6;
3572 break;
3573 default:
3574 /* oops */
3575 break;
3576 }
3577 }
3578
Bruce Allanad680762008-03-28 09:15:03 -07003579 /*
3580 * enable transmits in the hardware, need to do this
3581 * after setting TARC(0)
3582 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003583 tctl = er32(TCTL);
3584 tctl |= E1000_TCTL_EN;
3585 ew32(TCTL, tctl);
3586
3587 netif_carrier_on(netdev);
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003588 netif_tx_wake_all_queues(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003589
3590 if (!test_bit(__E1000_DOWN, &adapter->state))
3591 mod_timer(&adapter->phy_info_timer,
3592 round_jiffies(jiffies + 2 * HZ));
Auke Kokbc7f75f2007-09-17 12:30:59 -07003593 }
3594 } else {
3595 if (netif_carrier_ok(netdev)) {
3596 adapter->link_speed = 0;
3597 adapter->link_duplex = 0;
Jeff Kirsher44defeb2008-08-04 17:20:41 -07003598 e_info("Link is Down\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07003599 netif_carrier_off(netdev);
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07003600 netif_tx_stop_all_queues(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003601 if (!test_bit(__E1000_DOWN, &adapter->state))
3602 mod_timer(&adapter->phy_info_timer,
3603 round_jiffies(jiffies + 2 * HZ));
3604
3605 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
3606 schedule_work(&adapter->reset_task);
3607 }
3608 }
3609
3610link_up:
3611 e1000e_update_stats(adapter);
3612
3613 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
3614 adapter->tpt_old = adapter->stats.tpt;
3615 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
3616 adapter->colc_old = adapter->stats.colc;
3617
Bruce Allan7c257692008-04-23 11:09:00 -07003618 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
3619 adapter->gorc_old = adapter->stats.gorc;
3620 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
3621 adapter->gotc_old = adapter->stats.gotc;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003622
3623 e1000e_update_adaptive(&adapter->hw);
3624
3625 if (!netif_carrier_ok(netdev)) {
3626 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
3627 tx_ring->count);
3628 if (tx_pending) {
Bruce Allanad680762008-03-28 09:15:03 -07003629 /*
3630 * We've lost link, so the controller stops DMA,
Auke Kokbc7f75f2007-09-17 12:30:59 -07003631 * but we've got queued Tx work that's never going
3632 * to get done, so reset controller to flush Tx.
Bruce Allanad680762008-03-28 09:15:03 -07003633 * (Do the reset outside of interrupt context).
3634 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003635 adapter->tx_timeout_count++;
3636 schedule_work(&adapter->reset_task);
3637 }
3638 }
3639
Bruce Allanad680762008-03-28 09:15:03 -07003640 /* Cause software interrupt to ensure Rx ring is cleaned */
Bruce Allan4662e822008-08-26 18:37:06 -07003641 if (adapter->msix_entries)
3642 ew32(ICS, adapter->rx_ring->ims_val);
3643 else
3644 ew32(ICS, E1000_ICS_RXDMT0);
Auke Kokbc7f75f2007-09-17 12:30:59 -07003645
3646 /* Force detection of hung controller every watchdog period */
3647 adapter->detect_tx_hung = 1;
3648
Bruce Allanad680762008-03-28 09:15:03 -07003649 /*
3650 * With 82571 controllers, LAA may be overwritten due to controller
3651 * reset from the other port. Set the appropriate LAA in RAR[0]
3652 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003653 if (e1000e_get_laa_state_82571(hw))
3654 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
3655
3656 /* Reset the timer */
3657 if (!test_bit(__E1000_DOWN, &adapter->state))
3658 mod_timer(&adapter->watchdog_timer,
3659 round_jiffies(jiffies + 2 * HZ));
3660}
3661
3662#define E1000_TX_FLAGS_CSUM 0x00000001
3663#define E1000_TX_FLAGS_VLAN 0x00000002
3664#define E1000_TX_FLAGS_TSO 0x00000004
3665#define E1000_TX_FLAGS_IPV4 0x00000008
3666#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3667#define E1000_TX_FLAGS_VLAN_SHIFT 16
3668
3669static int e1000_tso(struct e1000_adapter *adapter,
3670 struct sk_buff *skb)
3671{
3672 struct e1000_ring *tx_ring = adapter->tx_ring;
3673 struct e1000_context_desc *context_desc;
3674 struct e1000_buffer *buffer_info;
3675 unsigned int i;
3676 u32 cmd_length = 0;
3677 u16 ipcse = 0, tucse, mss;
3678 u8 ipcss, ipcso, tucss, tucso, hdr_len;
3679 int err;
3680
3681 if (skb_is_gso(skb)) {
3682 if (skb_header_cloned(skb)) {
3683 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
3684 if (err)
3685 return err;
3686 }
3687
3688 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3689 mss = skb_shinfo(skb)->gso_size;
3690 if (skb->protocol == htons(ETH_P_IP)) {
3691 struct iphdr *iph = ip_hdr(skb);
3692 iph->tot_len = 0;
3693 iph->check = 0;
3694 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
3695 iph->daddr, 0,
3696 IPPROTO_TCP,
3697 0);
3698 cmd_length = E1000_TXD_CMD_IP;
3699 ipcse = skb_transport_offset(skb) - 1;
3700 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
3701 ipv6_hdr(skb)->payload_len = 0;
3702 tcp_hdr(skb)->check =
3703 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3704 &ipv6_hdr(skb)->daddr,
3705 0, IPPROTO_TCP, 0);
3706 ipcse = 0;
3707 }
3708 ipcss = skb_network_offset(skb);
3709 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
3710 tucss = skb_transport_offset(skb);
3711 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
3712 tucse = 0;
3713
3714 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
3715 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
3716
3717 i = tx_ring->next_to_use;
3718 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3719 buffer_info = &tx_ring->buffer_info[i];
3720
3721 context_desc->lower_setup.ip_fields.ipcss = ipcss;
3722 context_desc->lower_setup.ip_fields.ipcso = ipcso;
3723 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
3724 context_desc->upper_setup.tcp_fields.tucss = tucss;
3725 context_desc->upper_setup.tcp_fields.tucso = tucso;
3726 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
3727 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
3728 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
3729 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
3730
3731 buffer_info->time_stamp = jiffies;
3732 buffer_info->next_to_watch = i;
3733
3734 i++;
3735 if (i == tx_ring->count)
3736 i = 0;
3737 tx_ring->next_to_use = i;
3738
3739 return 1;
3740 }
3741
3742 return 0;
3743}
3744
3745static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
3746{
3747 struct e1000_ring *tx_ring = adapter->tx_ring;
3748 struct e1000_context_desc *context_desc;
3749 struct e1000_buffer *buffer_info;
3750 unsigned int i;
3751 u8 css;
Dave Grahamaf807c82008-10-09 14:28:58 -07003752 u32 cmd_len = E1000_TXD_CMD_DEXT;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003753
Dave Grahamaf807c82008-10-09 14:28:58 -07003754 if (skb->ip_summed != CHECKSUM_PARTIAL)
3755 return 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003756
Dave Grahamaf807c82008-10-09 14:28:58 -07003757 switch (skb->protocol) {
3758 case __constant_htons(ETH_P_IP):
3759 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
3760 cmd_len |= E1000_TXD_CMD_TCP;
3761 break;
3762 case __constant_htons(ETH_P_IPV6):
3763 /* XXX not handling all IPV6 headers */
3764 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3765 cmd_len |= E1000_TXD_CMD_TCP;
3766 break;
3767 default:
3768 if (unlikely(net_ratelimit()))
3769 e_warn("checksum_partial proto=%x!\n", skb->protocol);
3770 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003771 }
3772
Dave Grahamaf807c82008-10-09 14:28:58 -07003773 css = skb_transport_offset(skb);
3774
3775 i = tx_ring->next_to_use;
3776 buffer_info = &tx_ring->buffer_info[i];
3777 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3778
3779 context_desc->lower_setup.ip_config = 0;
3780 context_desc->upper_setup.tcp_fields.tucss = css;
3781 context_desc->upper_setup.tcp_fields.tucso =
3782 css + skb->csum_offset;
3783 context_desc->upper_setup.tcp_fields.tucse = 0;
3784 context_desc->tcp_seg_setup.data = 0;
3785 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
3786
3787 buffer_info->time_stamp = jiffies;
3788 buffer_info->next_to_watch = i;
3789
3790 i++;
3791 if (i == tx_ring->count)
3792 i = 0;
3793 tx_ring->next_to_use = i;
3794
3795 return 1;
Auke Kokbc7f75f2007-09-17 12:30:59 -07003796}
3797
3798#define E1000_MAX_PER_TXD 8192
3799#define E1000_MAX_TXD_PWR 12
3800
3801static int e1000_tx_map(struct e1000_adapter *adapter,
3802 struct sk_buff *skb, unsigned int first,
3803 unsigned int max_per_txd, unsigned int nr_frags,
3804 unsigned int mss)
3805{
3806 struct e1000_ring *tx_ring = adapter->tx_ring;
3807 struct e1000_buffer *buffer_info;
3808 unsigned int len = skb->len - skb->data_len;
3809 unsigned int offset = 0, size, count = 0, i;
3810 unsigned int f;
3811
3812 i = tx_ring->next_to_use;
3813
3814 while (len) {
3815 buffer_info = &tx_ring->buffer_info[i];
3816 size = min(len, max_per_txd);
3817
3818 /* Workaround for premature desc write-backs
3819 * in TSO mode. Append 4-byte sentinel desc */
3820 if (mss && !nr_frags && size == len && size > 8)
3821 size -= 4;
3822
3823 buffer_info->length = size;
3824 /* set time_stamp *before* dma to help avoid a possible race */
3825 buffer_info->time_stamp = jiffies;
3826 buffer_info->dma =
3827 pci_map_single(adapter->pdev,
3828 skb->data + offset,
3829 size,
3830 PCI_DMA_TODEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -07003831 if (pci_dma_mapping_error(adapter->pdev, buffer_info->dma)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07003832 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
3833 adapter->tx_dma_failed++;
3834 return -1;
3835 }
3836 buffer_info->next_to_watch = i;
3837
3838 len -= size;
3839 offset += size;
3840 count++;
3841 i++;
3842 if (i == tx_ring->count)
3843 i = 0;
3844 }
3845
3846 for (f = 0; f < nr_frags; f++) {
3847 struct skb_frag_struct *frag;
3848
3849 frag = &skb_shinfo(skb)->frags[f];
3850 len = frag->size;
3851 offset = frag->page_offset;
3852
3853 while (len) {
3854 buffer_info = &tx_ring->buffer_info[i];
3855 size = min(len, max_per_txd);
3856 /* Workaround for premature desc write-backs
3857 * in TSO mode. Append 4-byte sentinel desc */
3858 if (mss && f == (nr_frags-1) && size == len && size > 8)
3859 size -= 4;
3860
3861 buffer_info->length = size;
3862 buffer_info->time_stamp = jiffies;
3863 buffer_info->dma =
3864 pci_map_page(adapter->pdev,
3865 frag->page,
3866 offset,
3867 size,
3868 PCI_DMA_TODEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -07003869 if (pci_dma_mapping_error(adapter->pdev,
3870 buffer_info->dma)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07003871 dev_err(&adapter->pdev->dev,
3872 "TX DMA page map failed\n");
3873 adapter->tx_dma_failed++;
3874 return -1;
3875 }
3876
3877 buffer_info->next_to_watch = i;
3878
3879 len -= size;
3880 offset += size;
3881 count++;
3882
3883 i++;
3884 if (i == tx_ring->count)
3885 i = 0;
3886 }
3887 }
3888
3889 if (i == 0)
3890 i = tx_ring->count - 1;
3891 else
3892 i--;
3893
3894 tx_ring->buffer_info[i].skb = skb;
3895 tx_ring->buffer_info[first].next_to_watch = i;
3896
3897 return count;
3898}
3899
3900static void e1000_tx_queue(struct e1000_adapter *adapter,
3901 int tx_flags, int count)
3902{
3903 struct e1000_ring *tx_ring = adapter->tx_ring;
3904 struct e1000_tx_desc *tx_desc = NULL;
3905 struct e1000_buffer *buffer_info;
3906 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3907 unsigned int i;
3908
3909 if (tx_flags & E1000_TX_FLAGS_TSO) {
3910 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3911 E1000_TXD_CMD_TSE;
3912 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3913
3914 if (tx_flags & E1000_TX_FLAGS_IPV4)
3915 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
3916 }
3917
3918 if (tx_flags & E1000_TX_FLAGS_CSUM) {
3919 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3920 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3921 }
3922
3923 if (tx_flags & E1000_TX_FLAGS_VLAN) {
3924 txd_lower |= E1000_TXD_CMD_VLE;
3925 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3926 }
3927
3928 i = tx_ring->next_to_use;
3929
3930 while (count--) {
3931 buffer_info = &tx_ring->buffer_info[i];
3932 tx_desc = E1000_TX_DESC(*tx_ring, i);
3933 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3934 tx_desc->lower.data =
3935 cpu_to_le32(txd_lower | buffer_info->length);
3936 tx_desc->upper.data = cpu_to_le32(txd_upper);
3937
3938 i++;
3939 if (i == tx_ring->count)
3940 i = 0;
3941 }
3942
3943 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3944
Bruce Allanad680762008-03-28 09:15:03 -07003945 /*
3946 * Force memory writes to complete before letting h/w
Auke Kokbc7f75f2007-09-17 12:30:59 -07003947 * know there are new descriptors to fetch. (Only
3948 * applicable for weak-ordered memory model archs,
Bruce Allanad680762008-03-28 09:15:03 -07003949 * such as IA-64).
3950 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003951 wmb();
3952
3953 tx_ring->next_to_use = i;
3954 writel(i, adapter->hw.hw_addr + tx_ring->tail);
Bruce Allanad680762008-03-28 09:15:03 -07003955 /*
3956 * we need this if more than one processor can write to our tail
3957 * at a time, it synchronizes IO on IA64/Altix systems
3958 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07003959 mmiowb();
3960}
3961
3962#define MINIMUM_DHCP_PACKET_SIZE 282
3963static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
3964 struct sk_buff *skb)
3965{
3966 struct e1000_hw *hw = &adapter->hw;
3967 u16 length, offset;
3968
3969 if (vlan_tx_tag_present(skb)) {
3970 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id)
3971 && (adapter->hw.mng_cookie.status &
3972 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
3973 return 0;
3974 }
3975
3976 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
3977 return 0;
3978
3979 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
3980 return 0;
3981
3982 {
3983 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
3984 struct udphdr *udp;
3985
3986 if (ip->protocol != IPPROTO_UDP)
3987 return 0;
3988
3989 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
3990 if (ntohs(udp->dest) != 67)
3991 return 0;
3992
3993 offset = (u8 *)udp + 8 - skb->data;
3994 length = skb->len - offset;
3995 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
3996 }
3997
3998 return 0;
3999}
4000
4001static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
4002{
4003 struct e1000_adapter *adapter = netdev_priv(netdev);
4004
4005 netif_stop_queue(netdev);
Bruce Allanad680762008-03-28 09:15:03 -07004006 /*
4007 * Herbert's original patch had:
Auke Kokbc7f75f2007-09-17 12:30:59 -07004008 * smp_mb__after_netif_stop_queue();
Bruce Allanad680762008-03-28 09:15:03 -07004009 * but since that doesn't exist yet, just open code it.
4010 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004011 smp_mb();
4012
Bruce Allanad680762008-03-28 09:15:03 -07004013 /*
4014 * We need to check again in a case another CPU has just
4015 * made room available.
4016 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004017 if (e1000_desc_unused(adapter->tx_ring) < size)
4018 return -EBUSY;
4019
4020 /* A reprieve! */
4021 netif_start_queue(netdev);
4022 ++adapter->restart_queue;
4023 return 0;
4024}
4025
4026static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
4027{
4028 struct e1000_adapter *adapter = netdev_priv(netdev);
4029
4030 if (e1000_desc_unused(adapter->tx_ring) >= size)
4031 return 0;
4032 return __e1000_maybe_stop_tx(netdev, size);
4033}
4034
4035#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4036static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
4037{
4038 struct e1000_adapter *adapter = netdev_priv(netdev);
4039 struct e1000_ring *tx_ring = adapter->tx_ring;
4040 unsigned int first;
4041 unsigned int max_per_txd = E1000_MAX_PER_TXD;
4042 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
4043 unsigned int tx_flags = 0;
Auke Kok4e6c7092007-10-05 14:15:23 -07004044 unsigned int len = skb->len - skb->data_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004045 unsigned long irq_flags;
Auke Kok4e6c7092007-10-05 14:15:23 -07004046 unsigned int nr_frags;
4047 unsigned int mss;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004048 int count = 0;
4049 int tso;
4050 unsigned int f;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004051
4052 if (test_bit(__E1000_DOWN, &adapter->state)) {
4053 dev_kfree_skb_any(skb);
4054 return NETDEV_TX_OK;
4055 }
4056
4057 if (skb->len <= 0) {
4058 dev_kfree_skb_any(skb);
4059 return NETDEV_TX_OK;
4060 }
4061
4062 mss = skb_shinfo(skb)->gso_size;
Bruce Allanad680762008-03-28 09:15:03 -07004063 /*
4064 * The controller does a simple calculation to
Auke Kokbc7f75f2007-09-17 12:30:59 -07004065 * make sure there is enough room in the FIFO before
4066 * initiating the DMA for each buffer. The calc is:
4067 * 4 = ceil(buffer len/mss). To make sure we don't
4068 * overrun the FIFO, adjust the max buffer len if mss
Bruce Allanad680762008-03-28 09:15:03 -07004069 * drops.
4070 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004071 if (mss) {
4072 u8 hdr_len;
4073 max_per_txd = min(mss << 2, max_per_txd);
4074 max_txd_pwr = fls(max_per_txd) - 1;
4075
Bruce Allanad680762008-03-28 09:15:03 -07004076 /*
4077 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4078 * points to just header, pull a few bytes of payload from
4079 * frags into skb->data
4080 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004081 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
Bruce Allanad680762008-03-28 09:15:03 -07004082 /*
4083 * we do this workaround for ES2LAN, but it is un-necessary,
4084 * avoiding it could save a lot of cycles
4085 */
Auke Kok4e6c7092007-10-05 14:15:23 -07004086 if (skb->data_len && (hdr_len == len)) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07004087 unsigned int pull_size;
4088
4089 pull_size = min((unsigned int)4, skb->data_len);
4090 if (!__pskb_pull_tail(skb, pull_size)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004091 e_err("__pskb_pull_tail failed.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004092 dev_kfree_skb_any(skb);
4093 return NETDEV_TX_OK;
4094 }
4095 len = skb->len - skb->data_len;
4096 }
4097 }
4098
4099 /* reserve a descriptor for the offload context */
4100 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
4101 count++;
4102 count++;
4103
4104 count += TXD_USE_COUNT(len, max_txd_pwr);
4105
4106 nr_frags = skb_shinfo(skb)->nr_frags;
4107 for (f = 0; f < nr_frags; f++)
4108 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
4109 max_txd_pwr);
4110
4111 if (adapter->hw.mac.tx_pkt_filtering)
4112 e1000_transfer_dhcp_info(adapter, skb);
4113
4114 if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags))
4115 /* Collision - tell upper layer to requeue */
4116 return NETDEV_TX_LOCKED;
4117
Bruce Allanad680762008-03-28 09:15:03 -07004118 /*
4119 * need: count + 2 desc gap to keep tail from touching
4120 * head, otherwise try next time
4121 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004122 if (e1000_maybe_stop_tx(netdev, count + 2)) {
4123 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
4124 return NETDEV_TX_BUSY;
4125 }
4126
4127 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
4128 tx_flags |= E1000_TX_FLAGS_VLAN;
4129 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
4130 }
4131
4132 first = tx_ring->next_to_use;
4133
4134 tso = e1000_tso(adapter, skb);
4135 if (tso < 0) {
4136 dev_kfree_skb_any(skb);
4137 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
4138 return NETDEV_TX_OK;
4139 }
4140
4141 if (tso)
4142 tx_flags |= E1000_TX_FLAGS_TSO;
4143 else if (e1000_tx_csum(adapter, skb))
4144 tx_flags |= E1000_TX_FLAGS_CSUM;
4145
Bruce Allanad680762008-03-28 09:15:03 -07004146 /*
4147 * Old method was to assume IPv4 packet by default if TSO was enabled.
Auke Kokbc7f75f2007-09-17 12:30:59 -07004148 * 82571 hardware supports TSO capabilities for IPv6 as well...
Bruce Allanad680762008-03-28 09:15:03 -07004149 * no longer assume, we must.
4150 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004151 if (skb->protocol == htons(ETH_P_IP))
4152 tx_flags |= E1000_TX_FLAGS_IPV4;
4153
4154 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
4155 if (count < 0) {
4156 /* handle pci_map_single() error in e1000_tx_map */
4157 dev_kfree_skb_any(skb);
4158 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
Krishna Kumar7b5dfe1a2007-09-21 09:41:15 -07004159 return NETDEV_TX_OK;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004160 }
4161
4162 e1000_tx_queue(adapter, tx_flags, count);
4163
4164 netdev->trans_start = jiffies;
4165
4166 /* Make sure there is space in the ring for the next send. */
4167 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
4168
4169 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
4170 return NETDEV_TX_OK;
4171}
4172
4173/**
4174 * e1000_tx_timeout - Respond to a Tx Hang
4175 * @netdev: network interface device structure
4176 **/
4177static void e1000_tx_timeout(struct net_device *netdev)
4178{
4179 struct e1000_adapter *adapter = netdev_priv(netdev);
4180
4181 /* Do the reset outside of interrupt context */
4182 adapter->tx_timeout_count++;
4183 schedule_work(&adapter->reset_task);
4184}
4185
4186static void e1000_reset_task(struct work_struct *work)
4187{
4188 struct e1000_adapter *adapter;
4189 adapter = container_of(work, struct e1000_adapter, reset_task);
4190
4191 e1000e_reinit_locked(adapter);
4192}
4193
4194/**
4195 * e1000_get_stats - Get System Network Statistics
4196 * @netdev: network interface device structure
4197 *
4198 * Returns the address of the device statistics structure.
4199 * The statistics are actually updated from the timer callback.
4200 **/
4201static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
4202{
4203 struct e1000_adapter *adapter = netdev_priv(netdev);
4204
4205 /* only return the current stats */
4206 return &adapter->net_stats;
4207}
4208
4209/**
4210 * e1000_change_mtu - Change the Maximum Transfer Unit
4211 * @netdev: network interface device structure
4212 * @new_mtu: new value for maximum frame size
4213 *
4214 * Returns 0 on success, negative on failure
4215 **/
4216static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
4217{
4218 struct e1000_adapter *adapter = netdev_priv(netdev);
4219 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4220
Bruce Alland53f7062008-08-08 18:36:06 -07004221 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
Auke Kokbc7f75f2007-09-17 12:30:59 -07004222 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004223 e_err("Invalid MTU setting\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004224 return -EINVAL;
4225 }
4226
4227 /* Jumbo frame size limits */
4228 if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) {
4229 if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004230 e_err("Jumbo Frames not supported.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004231 return -EINVAL;
4232 }
4233 if (adapter->hw.phy.type == e1000_phy_ife) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004234 e_err("Jumbo Frames not supported.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004235 return -EINVAL;
4236 }
4237 }
4238
4239#define MAX_STD_JUMBO_FRAME_SIZE 9234
4240 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004241 e_err("MTU > 9216 not supported.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004242 return -EINVAL;
4243 }
4244
4245 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
4246 msleep(1);
4247 /* e1000e_down has a dependency on max_frame_size */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004248 adapter->max_frame_size = max_frame;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004249 if (netif_running(netdev))
4250 e1000e_down(adapter);
4251
Bruce Allanad680762008-03-28 09:15:03 -07004252 /*
4253 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
Auke Kokbc7f75f2007-09-17 12:30:59 -07004254 * means we reserve 2 more, this pushes us to allocate from the next
4255 * larger slab size.
Bruce Allanad680762008-03-28 09:15:03 -07004256 * i.e. RXBUFFER_2048 --> size-4096 slab
Bruce Allan97ac8ca2008-04-29 09:16:05 -07004257 * However with the new *_jumbo_rx* routines, jumbo receives will use
4258 * fragmented skbs
Bruce Allanad680762008-03-28 09:15:03 -07004259 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004260
4261 if (max_frame <= 256)
4262 adapter->rx_buffer_len = 256;
4263 else if (max_frame <= 512)
4264 adapter->rx_buffer_len = 512;
4265 else if (max_frame <= 1024)
4266 adapter->rx_buffer_len = 1024;
4267 else if (max_frame <= 2048)
4268 adapter->rx_buffer_len = 2048;
4269 else
4270 adapter->rx_buffer_len = 4096;
4271
4272 /* adjust allocation if LPE protects us, and we aren't using SBP */
4273 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
4274 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
4275 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
Bruce Allanad680762008-03-28 09:15:03 -07004276 + ETH_FCS_LEN;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004277
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004278 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004279 netdev->mtu = new_mtu;
4280
4281 if (netif_running(netdev))
4282 e1000e_up(adapter);
4283 else
4284 e1000e_reset(adapter);
4285
4286 clear_bit(__E1000_RESETTING, &adapter->state);
4287
4288 return 0;
4289}
4290
4291static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4292 int cmd)
4293{
4294 struct e1000_adapter *adapter = netdev_priv(netdev);
4295 struct mii_ioctl_data *data = if_mii(ifr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004296
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004297 if (adapter->hw.phy.media_type != e1000_media_type_copper)
Auke Kokbc7f75f2007-09-17 12:30:59 -07004298 return -EOPNOTSUPP;
4299
4300 switch (cmd) {
4301 case SIOCGMIIPHY:
4302 data->phy_id = adapter->hw.phy.addr;
4303 break;
4304 case SIOCGMIIREG:
4305 if (!capable(CAP_NET_ADMIN))
4306 return -EPERM;
Bruce Allan7c257692008-04-23 11:09:00 -07004307 switch (data->reg_num & 0x1F) {
4308 case MII_BMCR:
4309 data->val_out = adapter->phy_regs.bmcr;
4310 break;
4311 case MII_BMSR:
4312 data->val_out = adapter->phy_regs.bmsr;
4313 break;
4314 case MII_PHYSID1:
4315 data->val_out = (adapter->hw.phy.id >> 16);
4316 break;
4317 case MII_PHYSID2:
4318 data->val_out = (adapter->hw.phy.id & 0xFFFF);
4319 break;
4320 case MII_ADVERTISE:
4321 data->val_out = adapter->phy_regs.advertise;
4322 break;
4323 case MII_LPA:
4324 data->val_out = adapter->phy_regs.lpa;
4325 break;
4326 case MII_EXPANSION:
4327 data->val_out = adapter->phy_regs.expansion;
4328 break;
4329 case MII_CTRL1000:
4330 data->val_out = adapter->phy_regs.ctrl1000;
4331 break;
4332 case MII_STAT1000:
4333 data->val_out = adapter->phy_regs.stat1000;
4334 break;
4335 case MII_ESTATUS:
4336 data->val_out = adapter->phy_regs.estatus;
4337 break;
4338 default:
Auke Kokbc7f75f2007-09-17 12:30:59 -07004339 return -EIO;
4340 }
Auke Kokbc7f75f2007-09-17 12:30:59 -07004341 break;
4342 case SIOCSMIIREG:
4343 default:
4344 return -EOPNOTSUPP;
4345 }
4346 return 0;
4347}
4348
4349static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4350{
4351 switch (cmd) {
4352 case SIOCGMIIPHY:
4353 case SIOCGMIIREG:
4354 case SIOCSMIIREG:
4355 return e1000_mii_ioctl(netdev, ifr, cmd);
4356 default:
4357 return -EOPNOTSUPP;
4358 }
4359}
4360
4361static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4362{
4363 struct net_device *netdev = pci_get_drvdata(pdev);
4364 struct e1000_adapter *adapter = netdev_priv(netdev);
4365 struct e1000_hw *hw = &adapter->hw;
4366 u32 ctrl, ctrl_ext, rctl, status;
4367 u32 wufc = adapter->wol;
4368 int retval = 0;
4369
4370 netif_device_detach(netdev);
4371
4372 if (netif_running(netdev)) {
4373 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
4374 e1000e_down(adapter);
4375 e1000_free_irq(adapter);
4376 }
Bruce Allan4662e822008-08-26 18:37:06 -07004377 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004378
4379 retval = pci_save_state(pdev);
4380 if (retval)
4381 return retval;
4382
4383 status = er32(STATUS);
4384 if (status & E1000_STATUS_LU)
4385 wufc &= ~E1000_WUFC_LNKC;
4386
4387 if (wufc) {
4388 e1000_setup_rctl(adapter);
4389 e1000_set_multi(netdev);
4390
4391 /* turn on all-multi mode if wake on multicast is enabled */
4392 if (wufc & E1000_WUFC_MC) {
4393 rctl = er32(RCTL);
4394 rctl |= E1000_RCTL_MPE;
4395 ew32(RCTL, rctl);
4396 }
4397
4398 ctrl = er32(CTRL);
4399 /* advertise wake from D3Cold */
4400 #define E1000_CTRL_ADVD3WUC 0x00100000
4401 /* phy power management enable */
4402 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4403 ctrl |= E1000_CTRL_ADVD3WUC |
4404 E1000_CTRL_EN_PHY_PWR_MGMT;
4405 ew32(CTRL, ctrl);
4406
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004407 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
4408 adapter->hw.phy.media_type ==
4409 e1000_media_type_internal_serdes) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07004410 /* keep the laser running in D3 */
4411 ctrl_ext = er32(CTRL_EXT);
4412 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4413 ew32(CTRL_EXT, ctrl_ext);
4414 }
4415
Bruce Allan97ac8ca2008-04-29 09:16:05 -07004416 if (adapter->flags & FLAG_IS_ICH)
4417 e1000e_disable_gig_wol_ich8lan(&adapter->hw);
4418
Auke Kokbc7f75f2007-09-17 12:30:59 -07004419 /* Allow time for pending master requests to run */
4420 e1000e_disable_pcie_master(&adapter->hw);
4421
4422 ew32(WUC, E1000_WUC_PME_EN);
4423 ew32(WUFC, wufc);
4424 pci_enable_wake(pdev, PCI_D3hot, 1);
4425 pci_enable_wake(pdev, PCI_D3cold, 1);
4426 } else {
4427 ew32(WUC, 0);
4428 ew32(WUFC, 0);
4429 pci_enable_wake(pdev, PCI_D3hot, 0);
4430 pci_enable_wake(pdev, PCI_D3cold, 0);
4431 }
4432
Auke Kokbc7f75f2007-09-17 12:30:59 -07004433 /* make sure adapter isn't asleep if manageability is enabled */
4434 if (adapter->flags & FLAG_MNG_PT_ENABLED) {
4435 pci_enable_wake(pdev, PCI_D3hot, 1);
4436 pci_enable_wake(pdev, PCI_D3cold, 1);
4437 }
4438
4439 if (adapter->hw.phy.type == e1000_phy_igp_3)
4440 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
4441
Bruce Allanad680762008-03-28 09:15:03 -07004442 /*
4443 * Release control of h/w to f/w. If f/w is AMT enabled, this
4444 * would have already happened in close and is redundant.
4445 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004446 e1000_release_hw_control(adapter);
4447
4448 pci_disable_device(pdev);
4449
4450 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4451
4452 return 0;
4453}
4454
Auke Kok1eae4eb2007-10-31 15:22:00 -07004455static void e1000e_disable_l1aspm(struct pci_dev *pdev)
4456{
4457 int pos;
Auke Kok1eae4eb2007-10-31 15:22:00 -07004458 u16 val;
4459
4460 /*
4461 * 82573 workaround - disable L1 ASPM on mobile chipsets
4462 *
4463 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4464 * resulting in lost data or garbage information on the pci-e link
4465 * level. This could result in (false) bad EEPROM checksum errors,
4466 * long ping times (up to 2s) or even a system freeze/hang.
4467 *
4468 * Unfortunately this feature saves about 1W power consumption when
4469 * active.
4470 */
4471 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
Auke Kok1eae4eb2007-10-31 15:22:00 -07004472 pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val);
4473 if (val & 0x2) {
4474 dev_warn(&pdev->dev, "Disabling L1 ASPM\n");
4475 val &= ~0x2;
4476 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val);
4477 }
4478}
4479
Auke Kokbc7f75f2007-09-17 12:30:59 -07004480#ifdef CONFIG_PM
4481static int e1000_resume(struct pci_dev *pdev)
4482{
4483 struct net_device *netdev = pci_get_drvdata(pdev);
4484 struct e1000_adapter *adapter = netdev_priv(netdev);
4485 struct e1000_hw *hw = &adapter->hw;
4486 u32 err;
4487
4488 pci_set_power_state(pdev, PCI_D0);
4489 pci_restore_state(pdev);
Auke Kok1eae4eb2007-10-31 15:22:00 -07004490 e1000e_disable_l1aspm(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09004491
Bruce Allanf0f422e2008-08-04 17:21:53 -07004492 err = pci_enable_device_mem(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004493 if (err) {
4494 dev_err(&pdev->dev,
4495 "Cannot enable PCI device from suspend\n");
4496 return err;
4497 }
4498
4499 pci_set_master(pdev);
4500
4501 pci_enable_wake(pdev, PCI_D3hot, 0);
4502 pci_enable_wake(pdev, PCI_D3cold, 0);
4503
Bruce Allan4662e822008-08-26 18:37:06 -07004504 e1000e_set_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004505 if (netif_running(netdev)) {
4506 err = e1000_request_irq(adapter);
4507 if (err)
4508 return err;
4509 }
4510
4511 e1000e_power_up_phy(adapter);
4512 e1000e_reset(adapter);
4513 ew32(WUS, ~0);
4514
4515 e1000_init_manageability(adapter);
4516
4517 if (netif_running(netdev))
4518 e1000e_up(adapter);
4519
4520 netif_device_attach(netdev);
4521
Bruce Allanad680762008-03-28 09:15:03 -07004522 /*
4523 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07004524 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07004525 * under the control of the driver.
4526 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07004527 if (!(adapter->flags & FLAG_HAS_AMT))
Auke Kokbc7f75f2007-09-17 12:30:59 -07004528 e1000_get_hw_control(adapter);
4529
4530 return 0;
4531}
4532#endif
4533
4534static void e1000_shutdown(struct pci_dev *pdev)
4535{
4536 e1000_suspend(pdev, PMSG_SUSPEND);
4537}
4538
4539#ifdef CONFIG_NET_POLL_CONTROLLER
4540/*
4541 * Polling 'interrupt' - used by things like netconsole to send skbs
4542 * without having to re-enable interrupts. It's not called while
4543 * the interrupt routine is executing.
4544 */
4545static void e1000_netpoll(struct net_device *netdev)
4546{
4547 struct e1000_adapter *adapter = netdev_priv(netdev);
4548
4549 disable_irq(adapter->pdev->irq);
4550 e1000_intr(adapter->pdev->irq, netdev);
4551
Auke Kokbc7f75f2007-09-17 12:30:59 -07004552 enable_irq(adapter->pdev->irq);
4553}
4554#endif
4555
4556/**
4557 * e1000_io_error_detected - called when PCI error is detected
4558 * @pdev: Pointer to PCI device
4559 * @state: The current pci connection state
4560 *
4561 * This function is called after a PCI bus error affecting
4562 * this device has been detected.
4563 */
4564static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
4565 pci_channel_state_t state)
4566{
4567 struct net_device *netdev = pci_get_drvdata(pdev);
4568 struct e1000_adapter *adapter = netdev_priv(netdev);
4569
4570 netif_device_detach(netdev);
4571
4572 if (netif_running(netdev))
4573 e1000e_down(adapter);
4574 pci_disable_device(pdev);
4575
4576 /* Request a slot slot reset. */
4577 return PCI_ERS_RESULT_NEED_RESET;
4578}
4579
4580/**
4581 * e1000_io_slot_reset - called after the pci bus has been reset.
4582 * @pdev: Pointer to PCI device
4583 *
4584 * Restart the card from scratch, as if from a cold-boot. Implementation
4585 * resembles the first-half of the e1000_resume routine.
4586 */
4587static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4588{
4589 struct net_device *netdev = pci_get_drvdata(pdev);
4590 struct e1000_adapter *adapter = netdev_priv(netdev);
4591 struct e1000_hw *hw = &adapter->hw;
Taku Izumi6e4f6f62008-06-20 11:57:02 +09004592 int err;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004593
Auke Kok1eae4eb2007-10-31 15:22:00 -07004594 e1000e_disable_l1aspm(pdev);
Bruce Allanf0f422e2008-08-04 17:21:53 -07004595 err = pci_enable_device_mem(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09004596 if (err) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07004597 dev_err(&pdev->dev,
4598 "Cannot re-enable PCI device after reset.\n");
4599 return PCI_ERS_RESULT_DISCONNECT;
4600 }
4601 pci_set_master(pdev);
Wendy Xiongaad32732008-04-23 11:09:29 -07004602 pci_restore_state(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004603
4604 pci_enable_wake(pdev, PCI_D3hot, 0);
4605 pci_enable_wake(pdev, PCI_D3cold, 0);
4606
4607 e1000e_reset(adapter);
4608 ew32(WUS, ~0);
4609
4610 return PCI_ERS_RESULT_RECOVERED;
4611}
4612
4613/**
4614 * e1000_io_resume - called when traffic can start flowing again.
4615 * @pdev: Pointer to PCI device
4616 *
4617 * This callback is called when the error recovery driver tells us that
4618 * its OK to resume normal operation. Implementation resembles the
4619 * second-half of the e1000_resume routine.
4620 */
4621static void e1000_io_resume(struct pci_dev *pdev)
4622{
4623 struct net_device *netdev = pci_get_drvdata(pdev);
4624 struct e1000_adapter *adapter = netdev_priv(netdev);
4625
4626 e1000_init_manageability(adapter);
4627
4628 if (netif_running(netdev)) {
4629 if (e1000e_up(adapter)) {
4630 dev_err(&pdev->dev,
4631 "can't bring device back up after reset\n");
4632 return;
4633 }
4634 }
4635
4636 netif_device_attach(netdev);
4637
Bruce Allanad680762008-03-28 09:15:03 -07004638 /*
4639 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07004640 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07004641 * under the control of the driver.
4642 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07004643 if (!(adapter->flags & FLAG_HAS_AMT))
Auke Kokbc7f75f2007-09-17 12:30:59 -07004644 e1000_get_hw_control(adapter);
4645
4646}
4647
4648static void e1000_print_device_info(struct e1000_adapter *adapter)
4649{
4650 struct e1000_hw *hw = &adapter->hw;
4651 struct net_device *netdev = adapter->netdev;
Jeff Kirsher69e3fd82008-04-02 13:48:18 -07004652 u32 pba_num;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004653
4654 /* print bus type/speed/width info */
Johannes Berg7c510e42008-10-27 17:47:26 -07004655 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004656 /* bus width */
4657 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
4658 "Width x1"),
4659 /* MAC address */
Johannes Berg7c510e42008-10-27 17:47:26 -07004660 netdev->dev_addr);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004661 e_info("Intel(R) PRO/%s Network Connection\n",
4662 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
Jeff Kirsher69e3fd82008-04-02 13:48:18 -07004663 e1000e_read_pba_num(hw, &pba_num);
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004664 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4665 hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff));
Auke Kokbc7f75f2007-09-17 12:30:59 -07004666}
4667
Auke Kok10aa4c02008-08-04 17:21:20 -07004668static void e1000_eeprom_checks(struct e1000_adapter *adapter)
4669{
4670 struct e1000_hw *hw = &adapter->hw;
4671 int ret_val;
4672 u16 buf = 0;
4673
4674 if (hw->mac.type != e1000_82573)
4675 return;
4676
4677 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
4678 if (!(le16_to_cpu(buf) & (1 << 0))) {
4679 /* Deep Smart Power Down (DSPD) */
Frans Pop6c2a9ef2008-09-22 14:52:22 -07004680 dev_warn(&adapter->pdev->dev,
4681 "Warning: detected DSPD enabled in EEPROM\n");
Auke Kok10aa4c02008-08-04 17:21:20 -07004682 }
4683
4684 ret_val = e1000_read_nvm(hw, NVM_INIT_3GIO_3, 1, &buf);
4685 if (le16_to_cpu(buf) & (3 << 2)) {
4686 /* ASPM enable */
Frans Pop6c2a9ef2008-09-22 14:52:22 -07004687 dev_warn(&adapter->pdev->dev,
4688 "Warning: detected ASPM enabled in EEPROM\n");
Auke Kok10aa4c02008-08-04 17:21:20 -07004689 }
4690}
4691
Auke Kokbc7f75f2007-09-17 12:30:59 -07004692/**
4693 * e1000_probe - Device Initialization Routine
4694 * @pdev: PCI device information struct
4695 * @ent: entry in e1000_pci_tbl
4696 *
4697 * Returns 0 on success, negative on failure
4698 *
4699 * e1000_probe initializes an adapter identified by a pci_dev structure.
4700 * The OS initialization, configuring of the adapter private structure,
4701 * and a hardware reset occur.
4702 **/
4703static int __devinit e1000_probe(struct pci_dev *pdev,
4704 const struct pci_device_id *ent)
4705{
4706 struct net_device *netdev;
4707 struct e1000_adapter *adapter;
4708 struct e1000_hw *hw;
4709 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
Becky Brucef47e81f2008-05-01 18:03:11 -05004710 resource_size_t mmio_start, mmio_len;
4711 resource_size_t flash_start, flash_len;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004712
4713 static int cards_found;
4714 int i, err, pci_using_dac;
4715 u16 eeprom_data = 0;
4716 u16 eeprom_apme_mask = E1000_EEPROM_APME;
4717
Auke Kok1eae4eb2007-10-31 15:22:00 -07004718 e1000e_disable_l1aspm(pdev);
Taku Izumi6e4f6f62008-06-20 11:57:02 +09004719
Bruce Allanf0f422e2008-08-04 17:21:53 -07004720 err = pci_enable_device_mem(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004721 if (err)
4722 return err;
4723
4724 pci_using_dac = 0;
4725 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4726 if (!err) {
4727 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4728 if (!err)
4729 pci_using_dac = 1;
4730 } else {
4731 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4732 if (err) {
4733 err = pci_set_consistent_dma_mask(pdev,
4734 DMA_32BIT_MASK);
4735 if (err) {
4736 dev_err(&pdev->dev, "No usable DMA "
4737 "configuration, aborting\n");
4738 goto err_dma;
4739 }
4740 }
4741 }
4742
Bruce Allanf0f422e2008-08-04 17:21:53 -07004743 err = pci_request_selected_regions(pdev,
4744 pci_select_bars(pdev, IORESOURCE_MEM),
4745 e1000e_driver_name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004746 if (err)
4747 goto err_pci_reg;
4748
4749 pci_set_master(pdev);
Wendy Xiongaad32732008-04-23 11:09:29 -07004750 pci_save_state(pdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004751
4752 err = -ENOMEM;
4753 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
4754 if (!netdev)
4755 goto err_alloc_etherdev;
4756
Auke Kokbc7f75f2007-09-17 12:30:59 -07004757 SET_NETDEV_DEV(netdev, &pdev->dev);
4758
4759 pci_set_drvdata(pdev, netdev);
4760 adapter = netdev_priv(netdev);
4761 hw = &adapter->hw;
4762 adapter->netdev = netdev;
4763 adapter->pdev = pdev;
4764 adapter->ei = ei;
4765 adapter->pba = ei->pba;
4766 adapter->flags = ei->flags;
4767 adapter->hw.adapter = adapter;
4768 adapter->hw.mac.type = ei->mac;
4769 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
4770
4771 mmio_start = pci_resource_start(pdev, 0);
4772 mmio_len = pci_resource_len(pdev, 0);
4773
4774 err = -EIO;
4775 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
4776 if (!adapter->hw.hw_addr)
4777 goto err_ioremap;
4778
4779 if ((adapter->flags & FLAG_HAS_FLASH) &&
4780 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
4781 flash_start = pci_resource_start(pdev, 1);
4782 flash_len = pci_resource_len(pdev, 1);
4783 adapter->hw.flash_address = ioremap(flash_start, flash_len);
4784 if (!adapter->hw.flash_address)
4785 goto err_flashmap;
4786 }
4787
4788 /* construct the net_device struct */
4789 netdev->open = &e1000_open;
4790 netdev->stop = &e1000_close;
4791 netdev->hard_start_xmit = &e1000_xmit_frame;
4792 netdev->get_stats = &e1000_get_stats;
4793 netdev->set_multicast_list = &e1000_set_multi;
4794 netdev->set_mac_address = &e1000_set_mac;
4795 netdev->change_mtu = &e1000_change_mtu;
4796 netdev->do_ioctl = &e1000_ioctl;
4797 e1000e_set_ethtool_ops(netdev);
4798 netdev->tx_timeout = &e1000_tx_timeout;
4799 netdev->watchdog_timeo = 5 * HZ;
4800 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
4801 netdev->vlan_rx_register = e1000_vlan_rx_register;
4802 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
4803 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
4804#ifdef CONFIG_NET_POLL_CONTROLLER
4805 netdev->poll_controller = e1000_netpoll;
4806#endif
4807 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
4808
4809 netdev->mem_start = mmio_start;
4810 netdev->mem_end = mmio_start + mmio_len;
4811
4812 adapter->bd_number = cards_found++;
4813
Bruce Allan4662e822008-08-26 18:37:06 -07004814 e1000e_check_options(adapter);
4815
Auke Kokbc7f75f2007-09-17 12:30:59 -07004816 /* setup adapter struct */
4817 err = e1000_sw_init(adapter);
4818 if (err)
4819 goto err_sw_init;
4820
4821 err = -EIO;
4822
4823 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
4824 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
4825 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
4826
Jeff Kirsher69e3fd82008-04-02 13:48:18 -07004827 err = ei->get_variants(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004828 if (err)
4829 goto err_hw_init;
4830
Bruce Allan4a770352008-10-01 17:18:35 -07004831 if ((adapter->flags & FLAG_IS_ICH) &&
4832 (adapter->flags & FLAG_READ_ONLY_NVM))
4833 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
4834
Auke Kokbc7f75f2007-09-17 12:30:59 -07004835 hw->mac.ops.get_bus_info(&adapter->hw);
4836
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004837 adapter->hw.phy.autoneg_wait_to_complete = 0;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004838
4839 /* Copper options */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004840 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07004841 adapter->hw.phy.mdix = AUTO_ALL_MODES;
4842 adapter->hw.phy.disable_polarity_correction = 0;
4843 adapter->hw.phy.ms_type = e1000_ms_hw_default;
4844 }
4845
4846 if (e1000_check_reset_block(&adapter->hw))
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004847 e_info("PHY reset is blocked due to SOL/IDER session.\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004848
4849 netdev->features = NETIF_F_SG |
4850 NETIF_F_HW_CSUM |
4851 NETIF_F_HW_VLAN_TX |
4852 NETIF_F_HW_VLAN_RX;
4853
4854 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
4855 netdev->features |= NETIF_F_HW_VLAN_FILTER;
4856
4857 netdev->features |= NETIF_F_TSO;
4858 netdev->features |= NETIF_F_TSO6;
4859
Jeff Kirshera5136e22008-06-05 04:07:28 -07004860 netdev->vlan_features |= NETIF_F_TSO;
4861 netdev->vlan_features |= NETIF_F_TSO6;
4862 netdev->vlan_features |= NETIF_F_HW_CSUM;
4863 netdev->vlan_features |= NETIF_F_SG;
4864
Auke Kokbc7f75f2007-09-17 12:30:59 -07004865 if (pci_using_dac)
4866 netdev->features |= NETIF_F_HIGHDMA;
4867
Bruce Allanad680762008-03-28 09:15:03 -07004868 /*
4869 * We should not be using LLTX anymore, but we are still Tx faster with
4870 * it.
4871 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004872 netdev->features |= NETIF_F_LLTX;
4873
4874 if (e1000e_enable_mng_pass_thru(&adapter->hw))
4875 adapter->flags |= FLAG_MNG_PT_ENABLED;
4876
Bruce Allanad680762008-03-28 09:15:03 -07004877 /*
4878 * before reading the NVM, reset the controller to
4879 * put the device in a known good starting state
4880 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07004881 adapter->hw.mac.ops.reset_hw(&adapter->hw);
4882
4883 /*
4884 * systems with ASPM and others may see the checksum fail on the first
4885 * attempt. Let's give it a few tries
4886 */
4887 for (i = 0;; i++) {
4888 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
4889 break;
4890 if (i == 2) {
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004891 e_err("The NVM Checksum Is Not Valid\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004892 err = -EIO;
4893 goto err_eeprom;
4894 }
4895 }
4896
Auke Kok10aa4c02008-08-04 17:21:20 -07004897 e1000_eeprom_checks(adapter);
4898
Auke Kokbc7f75f2007-09-17 12:30:59 -07004899 /* copy the MAC address out of the NVM */
4900 if (e1000e_read_mac_addr(&adapter->hw))
Jeff Kirsher44defeb2008-08-04 17:20:41 -07004901 e_err("NVM Read Error while reading MAC address\n");
Auke Kokbc7f75f2007-09-17 12:30:59 -07004902
4903 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
4904 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
4905
4906 if (!is_valid_ether_addr(netdev->perm_addr)) {
Johannes Berg7c510e42008-10-27 17:47:26 -07004907 e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004908 err = -EIO;
4909 goto err_eeprom;
4910 }
4911
4912 init_timer(&adapter->watchdog_timer);
4913 adapter->watchdog_timer.function = &e1000_watchdog;
4914 adapter->watchdog_timer.data = (unsigned long) adapter;
4915
4916 init_timer(&adapter->phy_info_timer);
4917 adapter->phy_info_timer.function = &e1000_update_phy_info;
4918 adapter->phy_info_timer.data = (unsigned long) adapter;
4919
4920 INIT_WORK(&adapter->reset_task, e1000_reset_task);
4921 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
Jesse Brandeburga8f88ff2008-10-02 16:33:25 -07004922 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
4923 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004924
Auke Kokbc7f75f2007-09-17 12:30:59 -07004925 /* Initialize link parameters. User can change them with ethtool */
4926 adapter->hw.mac.autoneg = 1;
Auke Kok309af402007-10-05 15:22:02 -07004927 adapter->fc_autoneg = 1;
Jeff Kirsher318a94d2008-03-28 09:15:16 -07004928 adapter->hw.fc.original_type = e1000_fc_default;
4929 adapter->hw.fc.type = e1000_fc_default;
Auke Kokbc7f75f2007-09-17 12:30:59 -07004930 adapter->hw.phy.autoneg_advertised = 0x2f;
4931
4932 /* ring size defaults */
4933 adapter->rx_ring->count = 256;
4934 adapter->tx_ring->count = 256;
4935
4936 /*
4937 * Initial Wake on LAN setting - If APM wake is enabled in
4938 * the EEPROM, enable the ACPI Magic Packet filter
4939 */
4940 if (adapter->flags & FLAG_APME_IN_WUC) {
4941 /* APME bit in EEPROM is mapped to WUC.APME */
4942 eeprom_data = er32(WUC);
4943 eeprom_apme_mask = E1000_WUC_APME;
4944 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
4945 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
4946 (adapter->hw.bus.func == 1))
4947 e1000_read_nvm(&adapter->hw,
4948 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
4949 else
4950 e1000_read_nvm(&adapter->hw,
4951 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
4952 }
4953
4954 /* fetch WoL from EEPROM */
4955 if (eeprom_data & eeprom_apme_mask)
4956 adapter->eeprom_wol |= E1000_WUFC_MAG;
4957
4958 /*
4959 * now that we have the eeprom settings, apply the special cases
4960 * where the eeprom may be wrong or the board simply won't support
4961 * wake on lan on a particular port
4962 */
4963 if (!(adapter->flags & FLAG_HAS_WOL))
4964 adapter->eeprom_wol = 0;
4965
4966 /* initialize the wol settings based on the eeprom settings */
4967 adapter->wol = adapter->eeprom_wol;
4968
4969 /* reset the hardware with the new settings */
4970 e1000e_reset(adapter);
4971
Bruce Allanad680762008-03-28 09:15:03 -07004972 /*
4973 * If the controller has AMT, do not set DRV_LOAD until the interface
Auke Kokbc7f75f2007-09-17 12:30:59 -07004974 * is up. For all other cases, let the f/w know that the h/w is now
Bruce Allanad680762008-03-28 09:15:03 -07004975 * under the control of the driver.
4976 */
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07004977 if (!(adapter->flags & FLAG_HAS_AMT))
Auke Kokbc7f75f2007-09-17 12:30:59 -07004978 e1000_get_hw_control(adapter);
4979
4980 /* tell the stack to leave us alone until e1000_open() is called */
4981 netif_carrier_off(netdev);
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07004982 netif_tx_stop_all_queues(netdev);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004983
4984 strcpy(netdev->name, "eth%d");
4985 err = register_netdev(netdev);
4986 if (err)
4987 goto err_register;
4988
4989 e1000_print_device_info(adapter);
4990
4991 return 0;
4992
4993err_register:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07004994 if (!(adapter->flags & FLAG_HAS_AMT))
4995 e1000_release_hw_control(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07004996err_eeprom:
4997 if (!e1000_check_reset_block(&adapter->hw))
4998 e1000_phy_hw_reset(&adapter->hw);
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07004999err_hw_init:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005000
Auke Kokbc7f75f2007-09-17 12:30:59 -07005001 kfree(adapter->tx_ring);
5002 kfree(adapter->rx_ring);
5003err_sw_init:
Jesse Brandeburgc43bc57e2008-08-04 17:21:40 -07005004 if (adapter->hw.flash_address)
5005 iounmap(adapter->hw.flash_address);
5006err_flashmap:
Auke Kokbc7f75f2007-09-17 12:30:59 -07005007 iounmap(adapter->hw.hw_addr);
5008err_ioremap:
5009 free_netdev(netdev);
5010err_alloc_etherdev:
Bruce Allanf0f422e2008-08-04 17:21:53 -07005011 pci_release_selected_regions(pdev,
5012 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07005013err_pci_reg:
5014err_dma:
5015 pci_disable_device(pdev);
5016 return err;
5017}
5018
5019/**
5020 * e1000_remove - Device Removal Routine
5021 * @pdev: PCI device information struct
5022 *
5023 * e1000_remove is called by the PCI subsystem to alert the driver
5024 * that it should release a PCI device. The could be caused by a
5025 * Hot-Plug event, or because the driver is going to be removed from
5026 * memory.
5027 **/
5028static void __devexit e1000_remove(struct pci_dev *pdev)
5029{
5030 struct net_device *netdev = pci_get_drvdata(pdev);
5031 struct e1000_adapter *adapter = netdev_priv(netdev);
5032
Bruce Allanad680762008-03-28 09:15:03 -07005033 /*
5034 * flush_scheduled work may reschedule our watchdog task, so
5035 * explicitly disable watchdog tasks from being rescheduled
5036 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005037 set_bit(__E1000_DOWN, &adapter->state);
5038 del_timer_sync(&adapter->watchdog_timer);
5039 del_timer_sync(&adapter->phy_info_timer);
5040
5041 flush_scheduled_work();
5042
Bruce Allanad680762008-03-28 09:15:03 -07005043 /*
5044 * Release control of h/w to f/w. If f/w is AMT enabled, this
5045 * would have already happened in close and is redundant.
5046 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005047 e1000_release_hw_control(adapter);
5048
5049 unregister_netdev(netdev);
5050
5051 if (!e1000_check_reset_block(&adapter->hw))
5052 e1000_phy_hw_reset(&adapter->hw);
5053
Bruce Allan4662e822008-08-26 18:37:06 -07005054 e1000e_reset_interrupt_capability(adapter);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005055 kfree(adapter->tx_ring);
5056 kfree(adapter->rx_ring);
5057
5058 iounmap(adapter->hw.hw_addr);
5059 if (adapter->hw.flash_address)
5060 iounmap(adapter->hw.flash_address);
Bruce Allanf0f422e2008-08-04 17:21:53 -07005061 pci_release_selected_regions(pdev,
5062 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kokbc7f75f2007-09-17 12:30:59 -07005063
5064 free_netdev(netdev);
5065
5066 pci_disable_device(pdev);
5067}
5068
5069/* PCI Error Recovery (ERS) */
5070static struct pci_error_handlers e1000_err_handler = {
5071 .error_detected = e1000_io_error_detected,
5072 .slot_reset = e1000_io_slot_reset,
5073 .resume = e1000_io_resume,
5074};
5075
5076static struct pci_device_id e1000_pci_tbl[] = {
Auke Kokbc7f75f2007-09-17 12:30:59 -07005077 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
5078 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
5079 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
5080 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
5081 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
5082 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
Auke Kok040babf2007-10-31 15:22:05 -07005083 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
5084 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
5085 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
Bruce Allanad680762008-03-28 09:15:03 -07005086
Auke Kokbc7f75f2007-09-17 12:30:59 -07005087 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
5088 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
5089 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
5090 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
Bruce Allanad680762008-03-28 09:15:03 -07005091
Auke Kokbc7f75f2007-09-17 12:30:59 -07005092 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
5093 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
5094 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
Bruce Allanad680762008-03-28 09:15:03 -07005095
Bruce Allan4662e822008-08-26 18:37:06 -07005096 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
5097
Auke Kokbc7f75f2007-09-17 12:30:59 -07005098 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
5099 board_80003es2lan },
5100 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
5101 board_80003es2lan },
5102 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
5103 board_80003es2lan },
5104 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
5105 board_80003es2lan },
Bruce Allanad680762008-03-28 09:15:03 -07005106
Auke Kokbc7f75f2007-09-17 12:30:59 -07005107 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
5108 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
5109 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
5110 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
5111 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
5112 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
5113 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
Bruce Allanad680762008-03-28 09:15:03 -07005114
Auke Kokbc7f75f2007-09-17 12:30:59 -07005115 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
5116 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
5117 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
5118 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
5119 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
Bruce Allan2f15f9d2008-08-26 18:36:36 -07005120 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005121 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
5122 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
5123 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
5124
5125 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
5126 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
5127 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
Auke Kokbc7f75f2007-09-17 12:30:59 -07005128
Bruce Allanf4187b52008-08-26 18:36:50 -07005129 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
5130 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
5131
Auke Kokbc7f75f2007-09-17 12:30:59 -07005132 { } /* terminate list */
5133};
5134MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
5135
5136/* PCI Device API Driver */
5137static struct pci_driver e1000_driver = {
5138 .name = e1000e_driver_name,
5139 .id_table = e1000_pci_tbl,
5140 .probe = e1000_probe,
5141 .remove = __devexit_p(e1000_remove),
5142#ifdef CONFIG_PM
Bruce Allanad680762008-03-28 09:15:03 -07005143 /* Power Management Hooks */
Auke Kokbc7f75f2007-09-17 12:30:59 -07005144 .suspend = e1000_suspend,
5145 .resume = e1000_resume,
5146#endif
5147 .shutdown = e1000_shutdown,
5148 .err_handler = &e1000_err_handler
5149};
5150
5151/**
5152 * e1000_init_module - Driver Registration Routine
5153 *
5154 * e1000_init_module is the first routine called when the driver is
5155 * loaded. All it does is register with the PCI subsystem.
5156 **/
5157static int __init e1000_init_module(void)
5158{
5159 int ret;
5160 printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n",
5161 e1000e_driver_name, e1000e_driver_version);
Bruce Allanad680762008-03-28 09:15:03 -07005162 printk(KERN_INFO "%s: Copyright (c) 1999-2008 Intel Corporation.\n",
Auke Kokbc7f75f2007-09-17 12:30:59 -07005163 e1000e_driver_name);
5164 ret = pci_register_driver(&e1000_driver);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005165 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, e1000e_driver_name,
5166 PM_QOS_DEFAULT_VALUE);
5167
Auke Kokbc7f75f2007-09-17 12:30:59 -07005168 return ret;
5169}
5170module_init(e1000_init_module);
5171
5172/**
5173 * e1000_exit_module - Driver Exit Cleanup Routine
5174 *
5175 * e1000_exit_module is called just before the driver is removed
5176 * from memory.
5177 **/
5178static void __exit e1000_exit_module(void)
5179{
5180 pci_unregister_driver(&e1000_driver);
Bruce Allan97ac8ca2008-04-29 09:16:05 -07005181 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, e1000e_driver_name);
Auke Kokbc7f75f2007-09-17 12:30:59 -07005182}
5183module_exit(e1000_exit_module);
5184
5185
5186MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5187MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5188MODULE_LICENSE("GPL");
5189MODULE_VERSION(DRV_VERSION);
5190
5191/* e1000_main.c */