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authorAuke Kok <auke-jan.h.kok@intel.com>2007-09-17 15:30:59 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:50:40 -0400
commitbc7f75fa97884d41efbfde1397b621fefb2550b4 (patch)
tree037910bdb72ae1c1fc179f47beb1f9d00803dbf5 /drivers/net/e1000e/netdev.c
parentcbdb9e43d1fc50cfa509b1006e7252dc4ea53aa0 (diff)
[E1000E]: New pci-express e1000 driver (currently for ICH9 devices only)
This driver implements support for the ICH9 on-board LAN ethernet device. The device is similar to ICH8. The driver encompasses code to support 82571/2/3, es2lan and ICH8 devices as well, but those device IDs are disabled and will be "lifted" from the e1000 driver over one at a time once this driver receives some more live time. Changes to the last snapshot posted are exclusively in the internal hardware API organization. Many thanks to Jeff Garzik for jumping in and getting this organized with a keen eye on the future layout. [ Integrated napi_struct patch from Auke as well... -DaveM ] Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/e1000e/netdev.c')
-rw-r--r--drivers/net/e1000e/netdev.c4441
1 files changed, 4441 insertions, 0 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
new file mode 100644
index 000000000000..eeb40ccbcb22
--- /dev/null
+++ b/drivers/net/e1000e/netdev.c
@@ -0,0 +1,4441 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#include <linux/module.h>
30#include <linux/types.h>
31#include <linux/init.h>
32#include <linux/pci.h>
33#include <linux/vmalloc.h>
34#include <linux/pagemap.h>
35#include <linux/delay.h>
36#include <linux/netdevice.h>
37#include <linux/tcp.h>
38#include <linux/ipv6.h>
39#include <net/checksum.h>
40#include <net/ip6_checksum.h>
41#include <linux/mii.h>
42#include <linux/ethtool.h>
43#include <linux/if_vlan.h>
44#include <linux/cpu.h>
45#include <linux/smp.h>
46
47#include "e1000.h"
48
49#define DRV_VERSION "0.2.0"
50char e1000e_driver_name[] = "e1000e";
51const char e1000e_driver_version[] = DRV_VERSION;
52
53static const struct e1000_info *e1000_info_tbl[] = {
54 [board_82571] = &e1000_82571_info,
55 [board_82572] = &e1000_82572_info,
56 [board_82573] = &e1000_82573_info,
57 [board_80003es2lan] = &e1000_es2_info,
58 [board_ich8lan] = &e1000_ich8_info,
59 [board_ich9lan] = &e1000_ich9_info,
60};
61
62#ifdef DEBUG
63/**
64 * e1000_get_hw_dev_name - return device name string
65 * used by hardware layer to print debugging information
66 **/
67char *e1000e_get_hw_dev_name(struct e1000_hw *hw)
68{
69 struct e1000_adapter *adapter = hw->back;
70 struct net_device *netdev = adapter->netdev;
71 return netdev->name;
72}
73#endif
74
75/**
76 * e1000_desc_unused - calculate if we have unused descriptors
77 **/
78static int e1000_desc_unused(struct e1000_ring *ring)
79{
80 if (ring->next_to_clean > ring->next_to_use)
81 return ring->next_to_clean - ring->next_to_use - 1;
82
83 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
84}
85
86/**
87 * e1000_receive_skb - helper function to handle rx indications
88 * @adapter: board private structure
89 * @status: descriptor status field as written by hardware
90 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
91 * @skb: pointer to sk_buff to be indicated to stack
92 **/
93static void e1000_receive_skb(struct e1000_adapter *adapter,
94 struct net_device *netdev,
95 struct sk_buff *skb,
96 u8 status, u16 vlan)
97{
98 skb->protocol = eth_type_trans(skb, netdev);
99
100 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
101 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
102 le16_to_cpu(vlan) &
103 E1000_RXD_SPC_VLAN_MASK);
104 else
105 netif_receive_skb(skb);
106
107 netdev->last_rx = jiffies;
108}
109
110/**
111 * e1000_rx_checksum - Receive Checksum Offload for 82543
112 * @adapter: board private structure
113 * @status_err: receive descriptor status and error fields
114 * @csum: receive descriptor csum field
115 * @sk_buff: socket buffer with received data
116 **/
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 {
143 /* IP fragment with UDP payload */
144 /* Hardware complements the payload checksum, so we undo it
145 * and then put the value in host order for further stack use.
146 */
147 csum = ntohl(csum ^ 0xFFFF);
148 skb->csum = csum;
149 skb->ip_summed = CHECKSUM_COMPLETE;
150 }
151 adapter->hw_csum_good++;
152}
153
154/**
155 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
156 * @adapter: address of board private structure
157 **/
158static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
159 int cleaned_count)
160{
161 struct net_device *netdev = adapter->netdev;
162 struct pci_dev *pdev = adapter->pdev;
163 struct e1000_ring *rx_ring = adapter->rx_ring;
164 struct e1000_rx_desc *rx_desc;
165 struct e1000_buffer *buffer_info;
166 struct sk_buff *skb;
167 unsigned int i;
168 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
169
170 i = rx_ring->next_to_use;
171 buffer_info = &rx_ring->buffer_info[i];
172
173 while (cleaned_count--) {
174 skb = buffer_info->skb;
175 if (skb) {
176 skb_trim(skb, 0);
177 goto map_skb;
178 }
179
180 skb = netdev_alloc_skb(netdev, bufsz);
181 if (!skb) {
182 /* Better luck next round */
183 adapter->alloc_rx_buff_failed++;
184 break;
185 }
186
187 /* Make buffer alignment 2 beyond a 16 byte boundary
188 * this will result in a 16 byte aligned IP header after
189 * the 14 byte MAC header is removed
190 */
191 skb_reserve(skb, NET_IP_ALIGN);
192
193 buffer_info->skb = skb;
194map_skb:
195 buffer_info->dma = pci_map_single(pdev, skb->data,
196 adapter->rx_buffer_len,
197 PCI_DMA_FROMDEVICE);
198 if (pci_dma_mapping_error(buffer_info->dma)) {
199 dev_err(&pdev->dev, "RX DMA map failed\n");
200 adapter->rx_dma_failed++;
201 break;
202 }
203
204 rx_desc = E1000_RX_DESC(*rx_ring, i);
205 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
206
207 i++;
208 if (i == rx_ring->count)
209 i = 0;
210 buffer_info = &rx_ring->buffer_info[i];
211 }
212
213 if (rx_ring->next_to_use != i) {
214 rx_ring->next_to_use = i;
215 if (i-- == 0)
216 i = (rx_ring->count - 1);
217
218 /* Force memory writes to complete before letting h/w
219 * know there are new descriptors to fetch. (Only
220 * applicable for weak-ordered memory model archs,
221 * such as IA-64). */
222 wmb();
223 writel(i, adapter->hw.hw_addr + rx_ring->tail);
224 }
225}
226
227/**
228 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
229 * @adapter: address of board private structure
230 **/
231static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
232 int cleaned_count)
233{
234 struct net_device *netdev = adapter->netdev;
235 struct pci_dev *pdev = adapter->pdev;
236 union e1000_rx_desc_packet_split *rx_desc;
237 struct e1000_ring *rx_ring = adapter->rx_ring;
238 struct e1000_buffer *buffer_info;
239 struct e1000_ps_page *ps_page;
240 struct sk_buff *skb;
241 unsigned int i, j;
242
243 i = rx_ring->next_to_use;
244 buffer_info = &rx_ring->buffer_info[i];
245
246 while (cleaned_count--) {
247 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
248
249 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
250 ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS)
251 + j];
252 if (j < adapter->rx_ps_pages) {
253 if (!ps_page->page) {
254 ps_page->page = alloc_page(GFP_ATOMIC);
255 if (!ps_page->page) {
256 adapter->alloc_rx_buff_failed++;
257 goto no_buffers;
258 }
259 ps_page->dma = pci_map_page(pdev,
260 ps_page->page,
261 0, PAGE_SIZE,
262 PCI_DMA_FROMDEVICE);
263 if (pci_dma_mapping_error(
264 ps_page->dma)) {
265 dev_err(&adapter->pdev->dev,
266 "RX DMA page map failed\n");
267 adapter->rx_dma_failed++;
268 goto no_buffers;
269 }
270 }
271 /*
272 * Refresh the desc even if buffer_addrs
273 * didn't change because each write-back
274 * erases this info.
275 */
276 rx_desc->read.buffer_addr[j+1] =
277 cpu_to_le64(ps_page->dma);
278 } else {
279 rx_desc->read.buffer_addr[j+1] = ~0;
280 }
281 }
282
283 skb = netdev_alloc_skb(netdev,
284 adapter->rx_ps_bsize0 + NET_IP_ALIGN);
285
286 if (!skb) {
287 adapter->alloc_rx_buff_failed++;
288 break;
289 }
290
291 /* Make buffer alignment 2 beyond a 16 byte boundary
292 * this will result in a 16 byte aligned IP header after
293 * the 14 byte MAC header is removed
294 */
295 skb_reserve(skb, NET_IP_ALIGN);
296
297 buffer_info->skb = skb;
298 buffer_info->dma = pci_map_single(pdev, skb->data,
299 adapter->rx_ps_bsize0,
300 PCI_DMA_FROMDEVICE);
301 if (pci_dma_mapping_error(buffer_info->dma)) {
302 dev_err(&pdev->dev, "RX DMA map failed\n");
303 adapter->rx_dma_failed++;
304 /* cleanup skb */
305 dev_kfree_skb_any(skb);
306 buffer_info->skb = NULL;
307 break;
308 }
309
310 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
311
312 i++;
313 if (i == rx_ring->count)
314 i = 0;
315 buffer_info = &rx_ring->buffer_info[i];
316 }
317
318no_buffers:
319 if (rx_ring->next_to_use != i) {
320 rx_ring->next_to_use = i;
321
322 if (!(i--))
323 i = (rx_ring->count - 1);
324
325 /* Force memory writes to complete before letting h/w
326 * know there are new descriptors to fetch. (Only
327 * applicable for weak-ordered memory model archs,
328 * such as IA-64). */
329 wmb();
330 /* Hardware increments by 16 bytes, but packet split
331 * descriptors are 32 bytes...so we increment tail
332 * twice as much.
333 */
334 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
335 }
336}
337
338/**
339 * e1000_alloc_rx_buffers_jumbo - Replace used jumbo receive buffers
340 *
341 * @adapter: address of board private structure
342 * @cleaned_count: number of buffers to allocate this pass
343 **/
344static void e1000_alloc_rx_buffers_jumbo(struct e1000_adapter *adapter,
345 int cleaned_count)
346{
347 struct net_device *netdev = adapter->netdev;
348 struct pci_dev *pdev = adapter->pdev;
349 struct e1000_ring *rx_ring = adapter->rx_ring;
350 struct e1000_rx_desc *rx_desc;
351 struct e1000_buffer *buffer_info;
352 struct sk_buff *skb;
353 unsigned int i;
354 unsigned int bufsz = 256 -
355 16 /*for skb_reserve */ -
356 NET_IP_ALIGN;
357
358 i = rx_ring->next_to_use;
359 buffer_info = &rx_ring->buffer_info[i];
360
361 while (cleaned_count--) {
362 skb = buffer_info->skb;
363 if (skb) {
364 skb_trim(skb, 0);
365 goto check_page;
366 }
367
368 skb = netdev_alloc_skb(netdev, bufsz);
369 if (!skb) {
370 /* Better luck next round */
371 adapter->alloc_rx_buff_failed++;
372 break;
373 }
374
375 /* Make buffer alignment 2 beyond a 16 byte boundary
376 * this will result in a 16 byte aligned IP header after
377 * the 14 byte MAC header is removed
378 */
379 skb_reserve(skb, NET_IP_ALIGN);
380
381 buffer_info->skb = skb;
382check_page:
383 /* allocate a new page if necessary */
384 if (!buffer_info->page) {
385 buffer_info->page = alloc_page(GFP_ATOMIC);
386 if (!buffer_info->page) {
387 adapter->alloc_rx_buff_failed++;
388 break;
389 }
390 }
391
392 if (!buffer_info->dma)
393 buffer_info->dma = pci_map_page(pdev,
394 buffer_info->page, 0,
395 PAGE_SIZE,
396 PCI_DMA_FROMDEVICE);
397 if (pci_dma_mapping_error(buffer_info->dma)) {
398 dev_err(&adapter->pdev->dev, "RX DMA page map failed\n");
399 adapter->rx_dma_failed++;
400 break;
401 }
402
403 rx_desc = E1000_RX_DESC(*rx_ring, i);
404 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
405
406 i++;
407 if (i == rx_ring->count)
408 i = 0;
409 buffer_info = &rx_ring->buffer_info[i];
410 }
411
412 if (rx_ring->next_to_use != i) {
413 rx_ring->next_to_use = i;
414 if (i-- == 0)
415 i = (rx_ring->count - 1);
416
417 /* Force memory writes to complete before letting h/w
418 * know there are new descriptors to fetch. (Only
419 * applicable for weak-ordered memory model archs,
420 * such as IA-64). */
421 wmb();
422 writel(i, adapter->hw.hw_addr + rx_ring->tail);
423 }
424}
425
426/**
427 * e1000_clean_rx_irq - Send received data up the network stack; legacy
428 * @adapter: board private structure
429 *
430 * the return value indicates whether actual cleaning was done, there
431 * is no guarantee that everything was cleaned
432 **/
433static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
434 int *work_done, int work_to_do)
435{
436 struct net_device *netdev = adapter->netdev;
437 struct pci_dev *pdev = adapter->pdev;
438 struct e1000_ring *rx_ring = adapter->rx_ring;
439 struct e1000_rx_desc *rx_desc, *next_rxd;
440 struct e1000_buffer *buffer_info, *next_buffer;
441 u32 length;
442 unsigned int i;
443 int cleaned_count = 0;
444 bool cleaned = 0;
445 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
446
447 i = rx_ring->next_to_clean;
448 rx_desc = E1000_RX_DESC(*rx_ring, i);
449 buffer_info = &rx_ring->buffer_info[i];
450
451 while (rx_desc->status & E1000_RXD_STAT_DD) {
452 struct sk_buff *skb;
453 u8 status;
454
455 if (*work_done >= work_to_do)
456 break;
457 (*work_done)++;
458
459 status = rx_desc->status;
460 skb = buffer_info->skb;
461 buffer_info->skb = NULL;
462
463 prefetch(skb->data - NET_IP_ALIGN);
464
465 i++;
466 if (i == rx_ring->count)
467 i = 0;
468 next_rxd = E1000_RX_DESC(*rx_ring, i);
469 prefetch(next_rxd);
470
471 next_buffer = &rx_ring->buffer_info[i];
472
473 cleaned = 1;
474 cleaned_count++;
475 pci_unmap_single(pdev,
476 buffer_info->dma,
477 adapter->rx_buffer_len,
478 PCI_DMA_FROMDEVICE);
479 buffer_info->dma = 0;
480
481 length = le16_to_cpu(rx_desc->length);
482
483 /* !EOP means multiple descriptors were used to store a single
484 * packet, also make sure the frame isn't just CRC only */
485 if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) {
486 /* All receives must fit into a single buffer */
487 ndev_dbg(netdev, "%s: Receive packet consumed "
488 "multiple buffers\n", netdev->name);
489 /* recycle */
490 buffer_info->skb = skb;
491 goto next_desc;
492 }
493
494 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
495 /* recycle */
496 buffer_info->skb = skb;
497 goto next_desc;
498 }
499
500 /* adjust length to remove Ethernet CRC */
501 length -= 4;
502
503 /* probably a little skewed due to removing CRC */
504 total_rx_bytes += length;
505 total_rx_packets++;
506
507 /* code added for copybreak, this should improve
508 * performance for small packets with large amounts
509 * of reassembly being done in the stack */
510 if (length < copybreak) {
511 struct sk_buff *new_skb =
512 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
513 if (new_skb) {
514 skb_reserve(new_skb, NET_IP_ALIGN);
515 memcpy(new_skb->data - NET_IP_ALIGN,
516 skb->data - NET_IP_ALIGN,
517 length + NET_IP_ALIGN);
518 /* save the skb in buffer_info as good */
519 buffer_info->skb = skb;
520 skb = new_skb;
521 }
522 /* else just continue with the old one */
523 }
524 /* end copybreak code */
525 skb_put(skb, length);
526
527 /* Receive Checksum Offload */
528 e1000_rx_checksum(adapter,
529 (u32)(status) |
530 ((u32)(rx_desc->errors) << 24),
531 le16_to_cpu(rx_desc->csum), skb);
532
533 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
534
535next_desc:
536 rx_desc->status = 0;
537
538 /* return some buffers to hardware, one at a time is too slow */
539 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
540 adapter->alloc_rx_buf(adapter, cleaned_count);
541 cleaned_count = 0;
542 }
543
544 /* use prefetched values */
545 rx_desc = next_rxd;
546 buffer_info = next_buffer;
547 }
548 rx_ring->next_to_clean = i;
549
550 cleaned_count = e1000_desc_unused(rx_ring);
551 if (cleaned_count)
552 adapter->alloc_rx_buf(adapter, cleaned_count);
553
554 adapter->total_rx_packets += total_rx_packets;
555 adapter->total_rx_bytes += total_rx_bytes;
556 return cleaned;
557}
558
559static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
560 u16 length)
561{
562 bi->page = NULL;
563 skb->len += length;
564 skb->data_len += length;
565 skb->truesize += length;
566}
567
568static void e1000_put_txbuf(struct e1000_adapter *adapter,
569 struct e1000_buffer *buffer_info)
570{
571 if (buffer_info->dma) {
572 pci_unmap_page(adapter->pdev, buffer_info->dma,
573 buffer_info->length, PCI_DMA_TODEVICE);
574 buffer_info->dma = 0;
575 }
576 if (buffer_info->skb) {
577 dev_kfree_skb_any(buffer_info->skb);
578 buffer_info->skb = NULL;
579 }
580}
581
582static void e1000_print_tx_hang(struct e1000_adapter *adapter)
583{
584 struct e1000_ring *tx_ring = adapter->tx_ring;
585 unsigned int i = tx_ring->next_to_clean;
586 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
587 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
588 struct net_device *netdev = adapter->netdev;
589
590 /* detected Tx unit hang */
591 ndev_err(netdev,
592 "Detected Tx Unit Hang:\n"
593 " TDH <%x>\n"
594 " TDT <%x>\n"
595 " next_to_use <%x>\n"
596 " next_to_clean <%x>\n"
597 "buffer_info[next_to_clean]:\n"
598 " time_stamp <%lx>\n"
599 " next_to_watch <%x>\n"
600 " jiffies <%lx>\n"
601 " next_to_watch.status <%x>\n",
602 readl(adapter->hw.hw_addr + tx_ring->head),
603 readl(adapter->hw.hw_addr + tx_ring->tail),
604 tx_ring->next_to_use,
605 tx_ring->next_to_clean,
606 tx_ring->buffer_info[eop].time_stamp,
607 eop,
608 jiffies,
609 eop_desc->upper.fields.status);
610}
611
612/**
613 * e1000_clean_tx_irq - Reclaim resources after transmit completes
614 * @adapter: board private structure
615 *
616 * the return value indicates whether actual cleaning was done, there
617 * is no guarantee that everything was cleaned
618 **/
619static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
620{
621 struct net_device *netdev = adapter->netdev;
622 struct e1000_hw *hw = &adapter->hw;
623 struct e1000_ring *tx_ring = adapter->tx_ring;
624 struct e1000_tx_desc *tx_desc, *eop_desc;
625 struct e1000_buffer *buffer_info;
626 unsigned int i, eop;
627 unsigned int count = 0;
628 bool cleaned = 0;
629 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
630
631 i = tx_ring->next_to_clean;
632 eop = tx_ring->buffer_info[i].next_to_watch;
633 eop_desc = E1000_TX_DESC(*tx_ring, eop);
634
635 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
636 for (cleaned = 0; !cleaned; ) {
637 tx_desc = E1000_TX_DESC(*tx_ring, i);
638 buffer_info = &tx_ring->buffer_info[i];
639 cleaned = (i == eop);
640
641 if (cleaned) {
642 struct sk_buff *skb = buffer_info->skb;
643 unsigned int segs, bytecount;
644 segs = skb_shinfo(skb)->gso_segs ?: 1;
645 /* multiply data chunks by size of headers */
646 bytecount = ((segs - 1) * skb_headlen(skb)) +
647 skb->len;
648 total_tx_packets += segs;
649 total_tx_bytes += bytecount;
650 }
651
652 e1000_put_txbuf(adapter, buffer_info);
653 tx_desc->upper.data = 0;
654
655 i++;
656 if (i == tx_ring->count)
657 i = 0;
658 }
659
660 eop = tx_ring->buffer_info[i].next_to_watch;
661 eop_desc = E1000_TX_DESC(*tx_ring, eop);
662#define E1000_TX_WEIGHT 64
663 /* weight of a sort for tx, to avoid endless transmit cleanup */
664 if (count++ == E1000_TX_WEIGHT)
665 break;
666 }
667
668 tx_ring->next_to_clean = i;
669
670#define TX_WAKE_THRESHOLD 32
671 if (cleaned && netif_carrier_ok(netdev) &&
672 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
673 /* Make sure that anybody stopping the queue after this
674 * sees the new next_to_clean.
675 */
676 smp_mb();
677
678 if (netif_queue_stopped(netdev) &&
679 !(test_bit(__E1000_DOWN, &adapter->state))) {
680 netif_wake_queue(netdev);
681 ++adapter->restart_queue;
682 }
683 }
684
685 if (adapter->detect_tx_hung) {
686 /* Detect a transmit hang in hardware, this serializes the
687 * check with the clearing of time_stamp and movement of i */
688 adapter->detect_tx_hung = 0;
689 if (tx_ring->buffer_info[eop].dma &&
690 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp
691 + (adapter->tx_timeout_factor * HZ))
692 && !(er32(STATUS) &
693 E1000_STATUS_TXOFF)) {
694 e1000_print_tx_hang(adapter);
695 netif_stop_queue(netdev);
696 }
697 }
698 adapter->total_tx_bytes += total_tx_bytes;
699 adapter->total_tx_packets += total_tx_packets;
700 return cleaned;
701}
702
703/**
704 * e1000_clean_rx_irq_jumbo - Send received data up the network stack; legacy
705 * @adapter: board private structure
706 *
707 * the return value indicates whether actual cleaning was done, there
708 * is no guarantee that everything was cleaned
709 **/
710static bool e1000_clean_rx_irq_jumbo(struct e1000_adapter *adapter,
711 int *work_done, int work_to_do)
712{
713 struct net_device *netdev = adapter->netdev;
714 struct pci_dev *pdev = adapter->pdev;
715 struct e1000_ring *rx_ring = adapter->rx_ring;
716 struct e1000_rx_desc *rx_desc, *next_rxd;
717 struct e1000_buffer *buffer_info, *next_buffer;
718 u32 length;
719 unsigned int i;
720 int cleaned_count = 0;
721 bool cleaned = 0;
722 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
723
724 i = rx_ring->next_to_clean;
725 rx_desc = E1000_RX_DESC(*rx_ring, i);
726 buffer_info = &rx_ring->buffer_info[i];
727
728 while (rx_desc->status & E1000_RXD_STAT_DD) {
729 struct sk_buff *skb;
730 u8 status;
731
732 if (*work_done >= work_to_do)
733 break;
734 (*work_done)++;
735
736 status = rx_desc->status;
737 skb = buffer_info->skb;
738 buffer_info->skb = NULL;
739
740 i++;
741 if (i == rx_ring->count)
742 i = 0;
743 next_rxd = E1000_RX_DESC(*rx_ring, i);
744 prefetch(next_rxd);
745
746 next_buffer = &rx_ring->buffer_info[i];
747
748 cleaned = 1;
749 cleaned_count++;
750 pci_unmap_page(pdev,
751 buffer_info->dma,
752 PAGE_SIZE,
753 PCI_DMA_FROMDEVICE);
754 buffer_info->dma = 0;
755
756 length = le16_to_cpu(rx_desc->length);
757
758 /* errors is only valid for DD + EOP descriptors */
759 if ((status & E1000_RXD_STAT_EOP) &&
760 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
761 /* recycle both page and skb */
762 buffer_info->skb = skb;
763 /* an error means any chain goes out the window too */
764 if (rx_ring->rx_skb_top)
765 dev_kfree_skb(rx_ring->rx_skb_top);
766 rx_ring->rx_skb_top = NULL;
767 goto next_desc;
768 }
769
770#define rxtop rx_ring->rx_skb_top
771 if (!(status & E1000_RXD_STAT_EOP)) {
772 /* this descriptor is only the beginning (or middle) */
773 if (!rxtop) {
774 /* this is the beginning of a chain */
775 rxtop = skb;
776 skb_fill_page_desc(rxtop, 0, buffer_info->page,
777 0, length);
778 } else {
779 /* this is the middle of a chain */
780 skb_fill_page_desc(rxtop,
781 skb_shinfo(rxtop)->nr_frags,
782 buffer_info->page, 0,
783 length);
784 /* re-use the skb, only consumed the page */
785 buffer_info->skb = skb;
786 }
787 e1000_consume_page(buffer_info, rxtop, length);
788 goto next_desc;
789 } else {
790 if (rxtop) {
791 /* end of the chain */
792 skb_fill_page_desc(rxtop,
793 skb_shinfo(rxtop)->nr_frags,
794 buffer_info->page, 0, length);
795 /* re-use the current skb, we only consumed the
796 * page */
797 buffer_info->skb = skb;
798 skb = rxtop;
799 rxtop = NULL;
800 e1000_consume_page(buffer_info, skb, length);
801 } else {
802 /* no chain, got EOP, this buf is the packet
803 * copybreak to save the put_page/alloc_page */
804 if (length <= copybreak &&
805 skb_tailroom(skb) >= length) {
806 u8 *vaddr;
807 vaddr = kmap_atomic(buffer_info->page,
808 KM_SKB_DATA_SOFTIRQ);
809 memcpy(skb_tail_pointer(skb),
810 vaddr, length);
811 kunmap_atomic(vaddr,
812 KM_SKB_DATA_SOFTIRQ);
813 /* re-use the page, so don't erase
814 * buffer_info->page */
815 skb_put(skb, length);
816 } else {
817 skb_fill_page_desc(skb, 0,
818 buffer_info->page, 0,
819 length);
820 e1000_consume_page(buffer_info, skb,
821 length);
822 }
823 }
824 }
825
826 /* Receive Checksum Offload XXX recompute due to CRC strip? */
827 e1000_rx_checksum(adapter,
828 (u32)(status) |
829 ((u32)(rx_desc->errors) << 24),
830 le16_to_cpu(rx_desc->csum), skb);
831
832 pskb_trim(skb, skb->len - 4);
833
834 /* probably a little skewed due to removing CRC */
835 total_rx_bytes += skb->len;
836 total_rx_packets++;
837
838 /* eth type trans needs skb->data to point to something */
839 if (!pskb_may_pull(skb, ETH_HLEN)) {
840 ndev_err(netdev, "__pskb_pull_tail failed.\n");
841 dev_kfree_skb(skb);
842 goto next_desc;
843 }
844
845 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
846
847next_desc:
848 rx_desc->status = 0;
849
850 /* return some buffers to hardware, one at a time is too slow */
851 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
852 adapter->alloc_rx_buf(adapter, cleaned_count);
853 cleaned_count = 0;
854 }
855
856 /* use prefetched values */
857 rx_desc = next_rxd;
858 buffer_info = next_buffer;
859 }
860 rx_ring->next_to_clean = i;
861
862 cleaned_count = e1000_desc_unused(rx_ring);
863 if (cleaned_count)
864 adapter->alloc_rx_buf(adapter, cleaned_count);
865
866 adapter->total_rx_packets += total_rx_packets;
867 adapter->total_rx_bytes += total_rx_bytes;
868 return cleaned;
869}
870
871/**
872 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
873 * @adapter: board private structure
874 *
875 * the return value indicates whether actual cleaning was done, there
876 * is no guarantee that everything was cleaned
877 **/
878static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
879 int *work_done, int work_to_do)
880{
881 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
882 struct net_device *netdev = adapter->netdev;
883 struct pci_dev *pdev = adapter->pdev;
884 struct e1000_ring *rx_ring = adapter->rx_ring;
885 struct e1000_buffer *buffer_info, *next_buffer;
886 struct e1000_ps_page *ps_page;
887 struct sk_buff *skb;
888 unsigned int i, j;
889 u32 length, staterr;
890 int cleaned_count = 0;
891 bool cleaned = 0;
892 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
893
894 i = rx_ring->next_to_clean;
895 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
896 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
897 buffer_info = &rx_ring->buffer_info[i];
898
899 while (staterr & E1000_RXD_STAT_DD) {
900 if (*work_done >= work_to_do)
901 break;
902 (*work_done)++;
903 skb = buffer_info->skb;
904
905 /* in the packet split case this is header only */
906 prefetch(skb->data - NET_IP_ALIGN);
907
908 i++;
909 if (i == rx_ring->count)
910 i = 0;
911 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
912 prefetch(next_rxd);
913
914 next_buffer = &rx_ring->buffer_info[i];
915
916 cleaned = 1;
917 cleaned_count++;
918 pci_unmap_single(pdev, buffer_info->dma,
919 adapter->rx_ps_bsize0,
920 PCI_DMA_FROMDEVICE);
921 buffer_info->dma = 0;
922
923 if (!(staterr & E1000_RXD_STAT_EOP)) {
924 ndev_dbg(netdev, "%s: Packet Split buffers didn't pick "
925 "up the full packet\n", netdev->name);
926 dev_kfree_skb_irq(skb);
927 goto next_desc;
928 }
929
930 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
931 dev_kfree_skb_irq(skb);
932 goto next_desc;
933 }
934
935 length = le16_to_cpu(rx_desc->wb.middle.length0);
936
937 if (!length) {
938 ndev_dbg(netdev, "%s: Last part of the packet spanning"
939 " multiple descriptors\n", netdev->name);
940 dev_kfree_skb_irq(skb);
941 goto next_desc;
942 }
943
944 /* Good Receive */
945 skb_put(skb, length);
946
947 {
948 /* this looks ugly, but it seems compiler issues make it
949 more efficient than reusing j */
950 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
951
952 /* page alloc/put takes too long and effects small packet
953 * throughput, so unsplit small packets and save the alloc/put*/
954 if (l1 && (l1 <= copybreak) &&
955 ((length + l1) <= adapter->rx_ps_bsize0)) {
956 u8 *vaddr;
957
958 ps_page = &rx_ring->ps_pages[i * PS_PAGE_BUFFERS];
959
960 /* there is no documentation about how to call
961 * kmap_atomic, so we can't hold the mapping
962 * very long */
963 pci_dma_sync_single_for_cpu(pdev, ps_page->dma,
964 PAGE_SIZE, PCI_DMA_FROMDEVICE);
965 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
966 memcpy(skb_tail_pointer(skb), vaddr, l1);
967 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
968 pci_dma_sync_single_for_device(pdev, ps_page->dma,
969 PAGE_SIZE, PCI_DMA_FROMDEVICE);
970 /* remove the CRC */
971 l1 -= 4;
972 skb_put(skb, l1);
973 goto copydone;
974 } /* if */
975 }
976
977 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
978 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
979 if (!length)
980 break;
981
982 ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) + j];
983 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
984 PCI_DMA_FROMDEVICE);
985 ps_page->dma = 0;
986 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
987 ps_page->page = NULL;
988 skb->len += length;
989 skb->data_len += length;
990 skb->truesize += length;
991 }
992
993 /* strip the ethernet crc, problem is we're using pages now so
994 * this whole operation can get a little cpu intensive */
995 pskb_trim(skb, skb->len - 4);
996
997copydone:
998 total_rx_bytes += skb->len;
999 total_rx_packets++;
1000
1001 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
1002 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
1003
1004 if (rx_desc->wb.upper.header_status &
1005 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1006 adapter->rx_hdr_split++;
1007
1008 e1000_receive_skb(adapter, netdev, skb,
1009 staterr, rx_desc->wb.middle.vlan);
1010
1011next_desc:
1012 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1013 buffer_info->skb = NULL;
1014
1015 /* return some buffers to hardware, one at a time is too slow */
1016 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1017 adapter->alloc_rx_buf(adapter, cleaned_count);
1018 cleaned_count = 0;
1019 }
1020
1021 /* use prefetched values */
1022 rx_desc = next_rxd;
1023 buffer_info = next_buffer;
1024
1025 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1026 }
1027 rx_ring->next_to_clean = i;
1028
1029 cleaned_count = e1000_desc_unused(rx_ring);
1030 if (cleaned_count)
1031 adapter->alloc_rx_buf(adapter, cleaned_count);
1032
1033 adapter->total_rx_packets += total_rx_packets;
1034 adapter->total_rx_bytes += total_rx_bytes;
1035 return cleaned;
1036}
1037
1038/**
1039 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1040 * @adapter: board private structure
1041 **/
1042static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1043{
1044 struct e1000_ring *rx_ring = adapter->rx_ring;
1045 struct e1000_buffer *buffer_info;
1046 struct e1000_ps_page *ps_page;
1047 struct pci_dev *pdev = adapter->pdev;
1048 unsigned long size;
1049 unsigned int i, j;
1050
1051 /* Free all the Rx ring sk_buffs */
1052 for (i = 0; i < rx_ring->count; i++) {
1053 buffer_info = &rx_ring->buffer_info[i];
1054 if (buffer_info->dma) {
1055 if (adapter->clean_rx == e1000_clean_rx_irq)
1056 pci_unmap_single(pdev, buffer_info->dma,
1057 adapter->rx_buffer_len,
1058 PCI_DMA_FROMDEVICE);
1059 else if (adapter->clean_rx == e1000_clean_rx_irq_jumbo)
1060 pci_unmap_page(pdev, buffer_info->dma,
1061 PAGE_SIZE, PCI_DMA_FROMDEVICE);
1062 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1063 pci_unmap_single(pdev, buffer_info->dma,
1064 adapter->rx_ps_bsize0,
1065 PCI_DMA_FROMDEVICE);
1066 buffer_info->dma = 0;
1067 }
1068
1069 if (buffer_info->page) {
1070 put_page(buffer_info->page);
1071 buffer_info->page = NULL;
1072 }
1073
1074 if (buffer_info->skb) {
1075 dev_kfree_skb(buffer_info->skb);
1076 buffer_info->skb = NULL;
1077 }
1078
1079 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1080 ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS)
1081 + j];
1082 if (!ps_page->page)
1083 break;
1084 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
1085 PCI_DMA_FROMDEVICE);
1086 ps_page->dma = 0;
1087 put_page(ps_page->page);
1088 ps_page->page = NULL;
1089 }
1090 }
1091
1092 /* there also may be some cached data from a chained receive */
1093 if (rx_ring->rx_skb_top) {
1094 dev_kfree_skb(rx_ring->rx_skb_top);
1095 rx_ring->rx_skb_top = NULL;
1096 }
1097
1098 size = sizeof(struct e1000_buffer) * rx_ring->count;
1099 memset(rx_ring->buffer_info, 0, size);
1100 size = sizeof(struct e1000_ps_page)
1101 * (rx_ring->count * PS_PAGE_BUFFERS);
1102 memset(rx_ring->ps_pages, 0, size);
1103
1104 /* Zero out the descriptor ring */
1105 memset(rx_ring->desc, 0, rx_ring->size);
1106
1107 rx_ring->next_to_clean = 0;
1108 rx_ring->next_to_use = 0;
1109
1110 writel(0, adapter->hw.hw_addr + rx_ring->head);
1111 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1112}
1113
1114/**
1115 * e1000_intr_msi - Interrupt Handler
1116 * @irq: interrupt number
1117 * @data: pointer to a network interface device structure
1118 **/
1119static irqreturn_t e1000_intr_msi(int irq, void *data)
1120{
1121 struct net_device *netdev = data;
1122 struct e1000_adapter *adapter = netdev_priv(netdev);
1123 struct e1000_hw *hw = &adapter->hw;
1124 u32 icr = er32(ICR);
1125
1126 /* read ICR disables interrupts using IAM, so keep up with our
1127 * enable/disable accounting */
1128 atomic_inc(&adapter->irq_sem);
1129
1130 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1131 hw->mac.get_link_status = 1;
1132 /* ICH8 workaround-- Call gig speed drop workaround on cable
1133 * disconnect (LSC) before accessing any PHY registers */
1134 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1135 (!(er32(STATUS) & E1000_STATUS_LU)))
1136 e1000e_gig_downshift_workaround_ich8lan(hw);
1137
1138 /* 80003ES2LAN workaround-- For packet buffer work-around on
1139 * link down event; disable receives here in the ISR and reset
1140 * adapter in watchdog */
1141 if (netif_carrier_ok(netdev) &&
1142 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1143 /* disable receives */
1144 u32 rctl = er32(RCTL);
1145 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1146 }
1147 /* guard against interrupt when we're going down */
1148 if (!test_bit(__E1000_DOWN, &adapter->state))
1149 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1150 }
1151
1152 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1153 adapter->total_tx_bytes = 0;
1154 adapter->total_tx_packets = 0;
1155 adapter->total_rx_bytes = 0;
1156 adapter->total_rx_packets = 0;
1157 __netif_rx_schedule(netdev, &adapter->napi);
1158 } else {
1159 atomic_dec(&adapter->irq_sem);
1160 }
1161
1162 return IRQ_HANDLED;
1163}
1164
1165/**
1166 * e1000_intr - Interrupt Handler
1167 * @irq: interrupt number
1168 * @data: pointer to a network interface device structure
1169 **/
1170static irqreturn_t e1000_intr(int irq, void *data)
1171{
1172 struct net_device *netdev = data;
1173 struct e1000_adapter *adapter = netdev_priv(netdev);
1174 struct e1000_hw *hw = &adapter->hw;
1175
1176 u32 rctl, icr = er32(ICR);
1177 if (!icr)
1178 return IRQ_NONE; /* Not our interrupt */
1179
1180 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1181 * not set, then the adapter didn't send an interrupt */
1182 if (!(icr & E1000_ICR_INT_ASSERTED))
1183 return IRQ_NONE;
1184
1185 /* Interrupt Auto-Mask...upon reading ICR,
1186 * interrupts are masked. No need for the
1187 * IMC write, but it does mean we should
1188 * account for it ASAP. */
1189 atomic_inc(&adapter->irq_sem);
1190
1191 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1192 hw->mac.get_link_status = 1;
1193 /* ICH8 workaround-- Call gig speed drop workaround on cable
1194 * disconnect (LSC) before accessing any PHY registers */
1195 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1196 (!(er32(STATUS) & E1000_STATUS_LU)))
1197 e1000e_gig_downshift_workaround_ich8lan(hw);
1198
1199 /* 80003ES2LAN workaround--
1200 * For packet buffer work-around on link down event;
1201 * disable receives here in the ISR and
1202 * reset adapter in watchdog
1203 */
1204 if (netif_carrier_ok(netdev) &&
1205 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1206 /* disable receives */
1207 rctl = er32(RCTL);
1208 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1209 }
1210 /* guard against interrupt when we're going down */
1211 if (!test_bit(__E1000_DOWN, &adapter->state))
1212 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1213 }
1214
1215 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1216 adapter->total_tx_bytes = 0;
1217 adapter->total_tx_packets = 0;
1218 adapter->total_rx_bytes = 0;
1219 adapter->total_rx_packets = 0;
1220 __netif_rx_schedule(netdev, &adapter->napi);
1221 } else {
1222 atomic_dec(&adapter->irq_sem);
1223 }
1224
1225 return IRQ_HANDLED;
1226}
1227
1228static int e1000_request_irq(struct e1000_adapter *adapter)
1229{
1230 struct net_device *netdev = adapter->netdev;
1231 void (*handler) = &e1000_intr;
1232 int irq_flags = IRQF_SHARED;
1233 int err;
1234
1235 err = pci_enable_msi(adapter->pdev);
1236 if (err) {
1237 ndev_warn(netdev,
1238 "Unable to allocate MSI interrupt Error: %d\n", err);
1239 } else {
1240 adapter->flags |= FLAG_MSI_ENABLED;
1241 handler = &e1000_intr_msi;
1242 irq_flags = 0;
1243 }
1244
1245 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
1246 netdev);
1247 if (err) {
1248 if (adapter->flags & FLAG_MSI_ENABLED)
1249 pci_disable_msi(adapter->pdev);
1250 ndev_err(netdev,
1251 "Unable to allocate interrupt Error: %d\n", err);
1252 }
1253
1254 return err;
1255}
1256
1257static void e1000_free_irq(struct e1000_adapter *adapter)
1258{
1259 struct net_device *netdev = adapter->netdev;
1260
1261 free_irq(adapter->pdev->irq, netdev);
1262 if (adapter->flags & FLAG_MSI_ENABLED) {
1263 pci_disable_msi(adapter->pdev);
1264 adapter->flags &= ~FLAG_MSI_ENABLED;
1265 }
1266}
1267
1268/**
1269 * e1000_irq_disable - Mask off interrupt generation on the NIC
1270 **/
1271static void e1000_irq_disable(struct e1000_adapter *adapter)
1272{
1273 struct e1000_hw *hw = &adapter->hw;
1274
1275 atomic_inc(&adapter->irq_sem);
1276 ew32(IMC, ~0);
1277 e1e_flush();
1278 synchronize_irq(adapter->pdev->irq);
1279}
1280
1281/**
1282 * e1000_irq_enable - Enable default interrupt generation settings
1283 **/
1284static void e1000_irq_enable(struct e1000_adapter *adapter)
1285{
1286 struct e1000_hw *hw = &adapter->hw;
1287
1288 if (atomic_dec_and_test(&adapter->irq_sem)) {
1289 ew32(IMS, IMS_ENABLE_MASK);
1290 e1e_flush();
1291 }
1292}
1293
1294/**
1295 * e1000_get_hw_control - get control of the h/w from f/w
1296 * @adapter: address of board private structure
1297 *
1298 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1299 * For ASF and Pass Through versions of f/w this means that
1300 * the driver is loaded. For AMT version (only with 82573)
1301 * of the f/w this means that the network i/f is open.
1302 **/
1303static void e1000_get_hw_control(struct e1000_adapter *adapter)
1304{
1305 struct e1000_hw *hw = &adapter->hw;
1306 u32 ctrl_ext;
1307 u32 swsm;
1308
1309 /* Let firmware know the driver has taken over */
1310 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1311 swsm = er32(SWSM);
1312 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1313 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1314 ctrl_ext = er32(CTRL_EXT);
1315 ew32(CTRL_EXT,
1316 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1317 }
1318}
1319
1320/**
1321 * e1000_release_hw_control - release control of the h/w to f/w
1322 * @adapter: address of board private structure
1323 *
1324 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1325 * For ASF and Pass Through versions of f/w this means that the
1326 * driver is no longer loaded. For AMT version (only with 82573) i
1327 * of the f/w this means that the network i/f is closed.
1328 *
1329 **/
1330static void e1000_release_hw_control(struct e1000_adapter *adapter)
1331{
1332 struct e1000_hw *hw = &adapter->hw;
1333 u32 ctrl_ext;
1334 u32 swsm;
1335
1336 /* Let firmware taken over control of h/w */
1337 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1338 swsm = er32(SWSM);
1339 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
1340 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1341 ctrl_ext = er32(CTRL_EXT);
1342 ew32(CTRL_EXT,
1343 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1344 }
1345}
1346
1347static void e1000_release_manageability(struct e1000_adapter *adapter)
1348{
1349 if (adapter->flags & FLAG_MNG_PT_ENABLED) {
1350 struct e1000_hw *hw = &adapter->hw;
1351
1352 u32 manc = er32(MANC);
1353
1354 /* re-enable hardware interception of ARP */
1355 manc |= E1000_MANC_ARP_EN;
1356 manc &= ~E1000_MANC_EN_MNG2HOST;
1357
1358 /* don't explicitly have to mess with MANC2H since
1359 * MANC has an enable disable that gates MANC2H */
1360 ew32(MANC, manc);
1361 }
1362}
1363
1364/**
1365 * @e1000_alloc_ring - allocate memory for a ring structure
1366 **/
1367static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
1368 struct e1000_ring *ring)
1369{
1370 struct pci_dev *pdev = adapter->pdev;
1371
1372 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
1373 GFP_KERNEL);
1374 if (!ring->desc)
1375 return -ENOMEM;
1376
1377 return 0;
1378}
1379
1380/**
1381 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1382 * @adapter: board private structure
1383 *
1384 * Return 0 on success, negative on failure
1385 **/
1386int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
1387{
1388 struct e1000_ring *tx_ring = adapter->tx_ring;
1389 int err = -ENOMEM, size;
1390
1391 size = sizeof(struct e1000_buffer) * tx_ring->count;
1392 tx_ring->buffer_info = vmalloc(size);
1393 if (!tx_ring->buffer_info)
1394 goto err;
1395 memset(tx_ring->buffer_info, 0, size);
1396
1397 /* round up to nearest 4K */
1398 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1399 tx_ring->size = ALIGN(tx_ring->size, 4096);
1400
1401 err = e1000_alloc_ring_dma(adapter, tx_ring);
1402 if (err)
1403 goto err;
1404
1405 tx_ring->next_to_use = 0;
1406 tx_ring->next_to_clean = 0;
1407 spin_lock_init(&adapter->tx_queue_lock);
1408
1409 return 0;
1410err:
1411 vfree(tx_ring->buffer_info);
1412 ndev_err(adapter->netdev,
1413 "Unable to allocate memory for the transmit descriptor ring\n");
1414 return err;
1415}
1416
1417/**
1418 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1419 * @adapter: board private structure
1420 *
1421 * Returns 0 on success, negative on failure
1422 **/
1423int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
1424{
1425 struct e1000_ring *rx_ring = adapter->rx_ring;
1426 int size, desc_len, err = -ENOMEM;
1427
1428 size = sizeof(struct e1000_buffer) * rx_ring->count;
1429 rx_ring->buffer_info = vmalloc(size);
1430 if (!rx_ring->buffer_info)
1431 goto err;
1432 memset(rx_ring->buffer_info, 0, size);
1433
1434 rx_ring->ps_pages = kcalloc(rx_ring->count * PS_PAGE_BUFFERS,
1435 sizeof(struct e1000_ps_page),
1436 GFP_KERNEL);
1437 if (!rx_ring->ps_pages)
1438 goto err;
1439
1440 desc_len = sizeof(union e1000_rx_desc_packet_split);
1441
1442 /* Round up to nearest 4K */
1443 rx_ring->size = rx_ring->count * desc_len;
1444 rx_ring->size = ALIGN(rx_ring->size, 4096);
1445
1446 err = e1000_alloc_ring_dma(adapter, rx_ring);
1447 if (err)
1448 goto err;
1449
1450 rx_ring->next_to_clean = 0;
1451 rx_ring->next_to_use = 0;
1452 rx_ring->rx_skb_top = NULL;
1453
1454 return 0;
1455err:
1456 vfree(rx_ring->buffer_info);
1457 kfree(rx_ring->ps_pages);
1458 ndev_err(adapter->netdev,
1459 "Unable to allocate memory for the transmit descriptor ring\n");
1460 return err;
1461}
1462
1463/**
1464 * e1000_clean_tx_ring - Free Tx Buffers
1465 * @adapter: board private structure
1466 **/
1467static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
1468{
1469 struct e1000_ring *tx_ring = adapter->tx_ring;
1470 struct e1000_buffer *buffer_info;
1471 unsigned long size;
1472 unsigned int i;
1473
1474 for (i = 0; i < tx_ring->count; i++) {
1475 buffer_info = &tx_ring->buffer_info[i];
1476 e1000_put_txbuf(adapter, buffer_info);
1477 }
1478
1479 size = sizeof(struct e1000_buffer) * tx_ring->count;
1480 memset(tx_ring->buffer_info, 0, size);
1481
1482 memset(tx_ring->desc, 0, tx_ring->size);
1483
1484 tx_ring->next_to_use = 0;
1485 tx_ring->next_to_clean = 0;
1486
1487 writel(0, adapter->hw.hw_addr + tx_ring->head);
1488 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1489}
1490
1491/**
1492 * e1000e_free_tx_resources - Free Tx Resources per Queue
1493 * @adapter: board private structure
1494 *
1495 * Free all transmit software resources
1496 **/
1497void e1000e_free_tx_resources(struct e1000_adapter *adapter)
1498{
1499 struct pci_dev *pdev = adapter->pdev;
1500 struct e1000_ring *tx_ring = adapter->tx_ring;
1501
1502 e1000_clean_tx_ring(adapter);
1503
1504 vfree(tx_ring->buffer_info);
1505 tx_ring->buffer_info = NULL;
1506
1507 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1508 tx_ring->dma);
1509 tx_ring->desc = NULL;
1510}
1511
1512/**
1513 * e1000e_free_rx_resources - Free Rx Resources
1514 * @adapter: board private structure
1515 *
1516 * Free all receive software resources
1517 **/
1518
1519void e1000e_free_rx_resources(struct e1000_adapter *adapter)
1520{
1521 struct pci_dev *pdev = adapter->pdev;
1522 struct e1000_ring *rx_ring = adapter->rx_ring;
1523
1524 e1000_clean_rx_ring(adapter);
1525
1526 vfree(rx_ring->buffer_info);
1527 rx_ring->buffer_info = NULL;
1528
1529 kfree(rx_ring->ps_pages);
1530 rx_ring->ps_pages = NULL;
1531
1532 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1533 rx_ring->dma);
1534 rx_ring->desc = NULL;
1535}
1536
1537/**
1538 * e1000_update_itr - update the dynamic ITR value based on statistics
1539 * Stores a new ITR value based on packets and byte
1540 * counts during the last interrupt. The advantage of per interrupt
1541 * computation is faster updates and more accurate ITR for the current
1542 * traffic pattern. Constants in this function were computed
1543 * based on theoretical maximum wire speed and thresholds were set based
1544 * on testing data as well as attempting to minimize response time
1545 * while increasing bulk throughput.
1546 * this functionality is controlled by the InterruptThrottleRate module
1547 * parameter (see e1000_param.c)
1548 * @adapter: pointer to adapter
1549 * @itr_setting: current adapter->itr
1550 * @packets: the number of packets during this measurement interval
1551 * @bytes: the number of bytes during this measurement interval
1552 **/
1553static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
1554 u16 itr_setting, int packets,
1555 int bytes)
1556{
1557 unsigned int retval = itr_setting;
1558
1559 if (packets == 0)
1560 goto update_itr_done;
1561
1562 switch (itr_setting) {
1563 case lowest_latency:
1564 /* handle TSO and jumbo frames */
1565 if (bytes/packets > 8000)
1566 retval = bulk_latency;
1567 else if ((packets < 5) && (bytes > 512)) {
1568 retval = low_latency;
1569 }
1570 break;
1571 case low_latency: /* 50 usec aka 20000 ints/s */
1572 if (bytes > 10000) {
1573 /* this if handles the TSO accounting */
1574 if (bytes/packets > 8000) {
1575 retval = bulk_latency;
1576 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
1577 retval = bulk_latency;
1578 } else if ((packets > 35)) {
1579 retval = lowest_latency;
1580 }
1581 } else if (bytes/packets > 2000) {
1582 retval = bulk_latency;
1583 } else if (packets <= 2 && bytes < 512) {
1584 retval = lowest_latency;
1585 }
1586 break;
1587 case bulk_latency: /* 250 usec aka 4000 ints/s */
1588 if (bytes > 25000) {
1589 if (packets > 35) {
1590 retval = low_latency;
1591 }
1592 } else if (bytes < 6000) {
1593 retval = low_latency;
1594 }
1595 break;
1596 }
1597
1598update_itr_done:
1599 return retval;
1600}
1601
1602static void e1000_set_itr(struct e1000_adapter *adapter)
1603{
1604 struct e1000_hw *hw = &adapter->hw;
1605 u16 current_itr;
1606 u32 new_itr = adapter->itr;
1607
1608 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1609 if (adapter->link_speed != SPEED_1000) {
1610 current_itr = 0;
1611 new_itr = 4000;
1612 goto set_itr_now;
1613 }
1614
1615 adapter->tx_itr = e1000_update_itr(adapter,
1616 adapter->tx_itr,
1617 adapter->total_tx_packets,
1618 adapter->total_tx_bytes);
1619 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1620 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
1621 adapter->tx_itr = low_latency;
1622
1623 adapter->rx_itr = e1000_update_itr(adapter,
1624 adapter->rx_itr,
1625 adapter->total_rx_packets,
1626 adapter->total_rx_bytes);
1627 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1628 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
1629 adapter->rx_itr = low_latency;
1630
1631 current_itr = max(adapter->rx_itr, adapter->tx_itr);
1632
1633 switch (current_itr) {
1634 /* counts and packets in update_itr are dependent on these numbers */
1635 case lowest_latency:
1636 new_itr = 70000;
1637 break;
1638 case low_latency:
1639 new_itr = 20000; /* aka hwitr = ~200 */
1640 break;
1641 case bulk_latency:
1642 new_itr = 4000;
1643 break;
1644 default:
1645 break;
1646 }
1647
1648set_itr_now:
1649 if (new_itr != adapter->itr) {
1650 /* this attempts to bias the interrupt rate towards Bulk
1651 * by adding intermediate steps when interrupt rate is
1652 * increasing */
1653 new_itr = new_itr > adapter->itr ?
1654 min(adapter->itr + (new_itr >> 2), new_itr) :
1655 new_itr;
1656 adapter->itr = new_itr;
1657 ew32(ITR, 1000000000 / (new_itr * 256));
1658 }
1659}
1660
1661/**
1662 * e1000_clean - NAPI Rx polling callback
1663 * @adapter: board private structure
1664 **/
1665static int e1000_clean(struct napi_struct *napi, int budget)
1666{
1667 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
1668 struct net_device *poll_dev = adapter->netdev;
1669 int tx_cleaned = 0, work_done = 0;
1670
1671 /* Must NOT use netdev_priv macro here. */
1672 adapter = poll_dev->priv;
1673
1674 /* Keep link state information with original netdev */
1675 if (!netif_carrier_ok(poll_dev))
1676 goto quit_polling;
1677
1678 /* e1000_clean is called per-cpu. This lock protects
1679 * tx_ring from being cleaned by multiple cpus
1680 * simultaneously. A failure obtaining the lock means
1681 * tx_ring is currently being cleaned anyway. */
1682 if (spin_trylock(&adapter->tx_queue_lock)) {
1683 tx_cleaned = e1000_clean_tx_irq(adapter);
1684 spin_unlock(&adapter->tx_queue_lock);
1685 }
1686
1687 adapter->clean_rx(adapter, &work_done, budget);
1688
1689 /* If no Tx and not enough Rx work done, exit the polling mode */
1690 if ((!tx_cleaned && (work_done < budget)) ||
1691 !netif_running(poll_dev)) {
1692quit_polling:
1693 if (adapter->itr_setting & 3)
1694 e1000_set_itr(adapter);
1695 netif_rx_complete(poll_dev, napi);
1696 e1000_irq_enable(adapter);
1697 }
1698
1699 return work_done;
1700}
1701
1702static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1703{
1704 struct e1000_adapter *adapter = netdev_priv(netdev);
1705 struct e1000_hw *hw = &adapter->hw;
1706 u32 vfta, index;
1707
1708 /* don't update vlan cookie if already programmed */
1709 if ((adapter->hw.mng_cookie.status &
1710 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1711 (vid == adapter->mng_vlan_id))
1712 return;
1713 /* add VID to filter table */
1714 index = (vid >> 5) & 0x7F;
1715 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
1716 vfta |= (1 << (vid & 0x1F));
1717 e1000e_write_vfta(hw, index, vfta);
1718}
1719
1720static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1721{
1722 struct e1000_adapter *adapter = netdev_priv(netdev);
1723 struct e1000_hw *hw = &adapter->hw;
1724 u32 vfta, index;
1725
1726 e1000_irq_disable(adapter);
1727 vlan_group_set_device(adapter->vlgrp, vid, NULL);
1728 e1000_irq_enable(adapter);
1729
1730 if ((adapter->hw.mng_cookie.status &
1731 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1732 (vid == adapter->mng_vlan_id)) {
1733 /* release control to f/w */
1734 e1000_release_hw_control(adapter);
1735 return;
1736 }
1737
1738 /* remove VID from filter table */
1739 index = (vid >> 5) & 0x7F;
1740 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
1741 vfta &= ~(1 << (vid & 0x1F));
1742 e1000e_write_vfta(hw, index, vfta);
1743}
1744
1745static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
1746{
1747 struct net_device *netdev = adapter->netdev;
1748 u16 vid = adapter->hw.mng_cookie.vlan_id;
1749 u16 old_vid = adapter->mng_vlan_id;
1750
1751 if (!adapter->vlgrp)
1752 return;
1753
1754 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
1755 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1756 if (adapter->hw.mng_cookie.status &
1757 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
1758 e1000_vlan_rx_add_vid(netdev, vid);
1759 adapter->mng_vlan_id = vid;
1760 }
1761
1762 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
1763 (vid != old_vid) &&
1764 !vlan_group_get_device(adapter->vlgrp, old_vid))
1765 e1000_vlan_rx_kill_vid(netdev, old_vid);
1766 } else {
1767 adapter->mng_vlan_id = vid;
1768 }
1769}
1770
1771
1772static void e1000_vlan_rx_register(struct net_device *netdev,
1773 struct vlan_group *grp)
1774{
1775 struct e1000_adapter *adapter = netdev_priv(netdev);
1776 struct e1000_hw *hw = &adapter->hw;
1777 u32 ctrl, rctl;
1778
1779 e1000_irq_disable(adapter);
1780 adapter->vlgrp = grp;
1781
1782 if (grp) {
1783 /* enable VLAN tag insert/strip */
1784 ctrl = er32(CTRL);
1785 ctrl |= E1000_CTRL_VME;
1786 ew32(CTRL, ctrl);
1787
1788 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
1789 /* enable VLAN receive filtering */
1790 rctl = er32(RCTL);
1791 rctl |= E1000_RCTL_VFE;
1792 rctl &= ~E1000_RCTL_CFIEN;
1793 ew32(RCTL, rctl);
1794 e1000_update_mng_vlan(adapter);
1795 }
1796 } else {
1797 /* disable VLAN tag insert/strip */
1798 ctrl = er32(CTRL);
1799 ctrl &= ~E1000_CTRL_VME;
1800 ew32(CTRL, ctrl);
1801
1802 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
1803 /* disable VLAN filtering */
1804 rctl = er32(RCTL);
1805 rctl &= ~E1000_RCTL_VFE;
1806 ew32(RCTL, rctl);
1807 if (adapter->mng_vlan_id !=
1808 (u16)E1000_MNG_VLAN_NONE) {
1809 e1000_vlan_rx_kill_vid(netdev,
1810 adapter->mng_vlan_id);
1811 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1812 }
1813 }
1814 }
1815
1816 e1000_irq_enable(adapter);
1817}
1818
1819static void e1000_restore_vlan(struct e1000_adapter *adapter)
1820{
1821 u16 vid;
1822
1823 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1824
1825 if (!adapter->vlgrp)
1826 return;
1827
1828 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1829 if (!vlan_group_get_device(adapter->vlgrp, vid))
1830 continue;
1831 e1000_vlan_rx_add_vid(adapter->netdev, vid);
1832 }
1833}
1834
1835static void e1000_init_manageability(struct e1000_adapter *adapter)
1836{
1837 struct e1000_hw *hw = &adapter->hw;
1838 u32 manc, manc2h;
1839
1840 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
1841 return;
1842
1843 manc = er32(MANC);
1844
1845 /* disable hardware interception of ARP */
1846 manc &= ~(E1000_MANC_ARP_EN);
1847
1848 /* enable receiving management packets to the host. this will probably
1849 * generate destination unreachable messages from the host OS, but
1850 * the packets will be handled on SMBUS */
1851 manc |= E1000_MANC_EN_MNG2HOST;
1852 manc2h = er32(MANC2H);
1853#define E1000_MNG2HOST_PORT_623 (1 << 5)
1854#define E1000_MNG2HOST_PORT_664 (1 << 6)
1855 manc2h |= E1000_MNG2HOST_PORT_623;
1856 manc2h |= E1000_MNG2HOST_PORT_664;
1857 ew32(MANC2H, manc2h);
1858 ew32(MANC, manc);
1859}
1860
1861/**
1862 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1863 * @adapter: board private structure
1864 *
1865 * Configure the Tx unit of the MAC after a reset.
1866 **/
1867static void e1000_configure_tx(struct e1000_adapter *adapter)
1868{
1869 struct e1000_hw *hw = &adapter->hw;
1870 struct e1000_ring *tx_ring = adapter->tx_ring;
1871 u64 tdba;
1872 u32 tdlen, tctl, tipg, tarc;
1873 u32 ipgr1, ipgr2;
1874
1875 /* Setup the HW Tx Head and Tail descriptor pointers */
1876 tdba = tx_ring->dma;
1877 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
1878 ew32(TDBAL, (tdba & DMA_32BIT_MASK));
1879 ew32(TDBAH, (tdba >> 32));
1880 ew32(TDLEN, tdlen);
1881 ew32(TDH, 0);
1882 ew32(TDT, 0);
1883 tx_ring->head = E1000_TDH;
1884 tx_ring->tail = E1000_TDT;
1885
1886 /* Set the default values for the Tx Inter Packet Gap timer */
1887 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
1888 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
1889 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
1890
1891 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
1892 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
1893
1894 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1895 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1896 ew32(TIPG, tipg);
1897
1898 /* Set the Tx Interrupt Delay register */
1899 ew32(TIDV, adapter->tx_int_delay);
1900 /* tx irq moderation */
1901 ew32(TADV, adapter->tx_abs_int_delay);
1902
1903 /* Program the Transmit Control Register */
1904 tctl = er32(TCTL);
1905 tctl &= ~E1000_TCTL_CT;
1906 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1907 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1908
1909 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
1910 tarc = er32(TARC0);
1911 /* set the speed mode bit, we'll clear it if we're not at
1912 * gigabit link later */
1913#define SPEED_MODE_BIT (1 << 21)
1914 tarc |= SPEED_MODE_BIT;
1915 ew32(TARC0, tarc);
1916 }
1917
1918 /* errata: program both queues to unweighted RR */
1919 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
1920 tarc = er32(TARC0);
1921 tarc |= 1;
1922 ew32(TARC0, tarc);
1923 tarc = er32(TARC1);
1924 tarc |= 1;
1925 ew32(TARC1, tarc);
1926 }
1927
1928 e1000e_config_collision_dist(hw);
1929
1930 /* Setup Transmit Descriptor Settings for eop descriptor */
1931 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1932
1933 /* only set IDE if we are delaying interrupts using the timers */
1934 if (adapter->tx_int_delay)
1935 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1936
1937 /* enable Report Status bit */
1938 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1939
1940 ew32(TCTL, tctl);
1941
1942 adapter->tx_queue_len = adapter->netdev->tx_queue_len;
1943}
1944
1945/**
1946 * e1000_setup_rctl - configure the receive control registers
1947 * @adapter: Board private structure
1948 **/
1949#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1950 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1951static void e1000_setup_rctl(struct e1000_adapter *adapter)
1952{
1953 struct e1000_hw *hw = &adapter->hw;
1954 u32 rctl, rfctl;
1955 u32 psrctl = 0;
1956 u32 pages = 0;
1957
1958 /* Program MC offset vector base */
1959 rctl = er32(RCTL);
1960 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1961 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1962 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1963 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1964
1965 /* Do not Store bad packets */
1966 rctl &= ~E1000_RCTL_SBP;
1967
1968 /* Enable Long Packet receive */
1969 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1970 rctl &= ~E1000_RCTL_LPE;
1971 else
1972 rctl |= E1000_RCTL_LPE;
1973
1974 /* Setup buffer sizes */
1975 rctl &= ~E1000_RCTL_SZ_4096;
1976 rctl |= E1000_RCTL_BSEX;
1977 switch (adapter->rx_buffer_len) {
1978 case 256:
1979 rctl |= E1000_RCTL_SZ_256;
1980 rctl &= ~E1000_RCTL_BSEX;
1981 break;
1982 case 512:
1983 rctl |= E1000_RCTL_SZ_512;
1984 rctl &= ~E1000_RCTL_BSEX;
1985 break;
1986 case 1024:
1987 rctl |= E1000_RCTL_SZ_1024;
1988 rctl &= ~E1000_RCTL_BSEX;
1989 break;
1990 case 2048:
1991 default:
1992 rctl |= E1000_RCTL_SZ_2048;
1993 rctl &= ~E1000_RCTL_BSEX;
1994 break;
1995 case 4096:
1996 rctl |= E1000_RCTL_SZ_4096;
1997 break;
1998 case 8192:
1999 rctl |= E1000_RCTL_SZ_8192;
2000 break;
2001 case 16384:
2002 rctl |= E1000_RCTL_SZ_16384;
2003 break;
2004 }
2005
2006 /*
2007 * 82571 and greater support packet-split where the protocol
2008 * header is placed in skb->data and the packet data is
2009 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2010 * In the case of a non-split, skb->data is linearly filled,
2011 * followed by the page buffers. Therefore, skb->data is
2012 * sized to hold the largest protocol header.
2013 *
2014 * allocations using alloc_page take too long for regular MTU
2015 * so only enable packet split for jumbo frames
2016 *
2017 * Using pages when the page size is greater than 16k wastes
2018 * a lot of memory, since we allocate 3 pages at all times
2019 * per packet.
2020 */
2021 adapter->rx_ps_pages = 0;
2022 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2023 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2024 adapter->rx_ps_pages = pages;
2025
2026 if (adapter->rx_ps_pages) {
2027 /* Configure extra packet-split registers */
2028 rfctl = er32(RFCTL);
2029 rfctl |= E1000_RFCTL_EXTEN;
2030 /* disable packet split support for IPv6 extension headers,
2031 * because some malformed IPv6 headers can hang the RX */
2032 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2033 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2034
2035 ew32(RFCTL, rfctl);
2036
2037 /* disable the stripping of CRC because it breaks
2038 * BMC firmware connected over SMBUS */
2039 rctl |= E1000_RCTL_DTYP_PS /* | E1000_RCTL_SECRC */;
2040
2041 psrctl |= adapter->rx_ps_bsize0 >>
2042 E1000_PSRCTL_BSIZE0_SHIFT;
2043
2044 switch (adapter->rx_ps_pages) {
2045 case 3:
2046 psrctl |= PAGE_SIZE <<
2047 E1000_PSRCTL_BSIZE3_SHIFT;
2048 case 2:
2049 psrctl |= PAGE_SIZE <<
2050 E1000_PSRCTL_BSIZE2_SHIFT;
2051 case 1:
2052 psrctl |= PAGE_SIZE >>
2053 E1000_PSRCTL_BSIZE1_SHIFT;
2054 break;
2055 }
2056
2057 ew32(PSRCTL, psrctl);
2058 }
2059
2060 ew32(RCTL, rctl);
2061}
2062
2063/**
2064 * e1000_configure_rx - Configure Receive Unit after Reset
2065 * @adapter: board private structure
2066 *
2067 * Configure the Rx unit of the MAC after a reset.
2068 **/
2069static void e1000_configure_rx(struct e1000_adapter *adapter)
2070{
2071 struct e1000_hw *hw = &adapter->hw;
2072 struct e1000_ring *rx_ring = adapter->rx_ring;
2073 u64 rdba;
2074 u32 rdlen, rctl, rxcsum, ctrl_ext;
2075
2076 if (adapter->rx_ps_pages) {
2077 /* this is a 32 byte descriptor */
2078 rdlen = rx_ring->count *
2079 sizeof(union e1000_rx_desc_packet_split);
2080 adapter->clean_rx = e1000_clean_rx_irq_ps;
2081 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
2082 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + VLAN_HLEN + 4) {
2083 rdlen = rx_ring->count *
2084 sizeof(struct e1000_rx_desc);
2085 adapter->clean_rx = e1000_clean_rx_irq_jumbo;
2086 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_jumbo;
2087 } else {
2088 rdlen = rx_ring->count *
2089 sizeof(struct e1000_rx_desc);
2090 adapter->clean_rx = e1000_clean_rx_irq;
2091 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2092 }
2093
2094 /* disable receives while setting up the descriptors */
2095 rctl = er32(RCTL);
2096 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2097 e1e_flush();
2098 msleep(10);
2099
2100 /* set the Receive Delay Timer Register */
2101 ew32(RDTR, adapter->rx_int_delay);
2102
2103 /* irq moderation */
2104 ew32(RADV, adapter->rx_abs_int_delay);
2105 if (adapter->itr_setting != 0)
2106 ew32(ITR,
2107 1000000000 / (adapter->itr * 256));
2108
2109 ctrl_ext = er32(CTRL_EXT);
2110 /* Reset delay timers after every interrupt */
2111 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
2112 /* Auto-Mask interrupts upon ICR access */
2113 ctrl_ext |= E1000_CTRL_EXT_IAME;
2114 ew32(IAM, 0xffffffff);
2115 ew32(CTRL_EXT, ctrl_ext);
2116 e1e_flush();
2117
2118 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2119 * the Base and Length of the Rx Descriptor Ring */
2120 rdba = rx_ring->dma;
2121 ew32(RDBAL, (rdba & DMA_32BIT_MASK));
2122 ew32(RDBAH, (rdba >> 32));
2123 ew32(RDLEN, rdlen);
2124 ew32(RDH, 0);
2125 ew32(RDT, 0);
2126 rx_ring->head = E1000_RDH;
2127 rx_ring->tail = E1000_RDT;
2128
2129 /* Enable Receive Checksum Offload for TCP and UDP */
2130 rxcsum = er32(RXCSUM);
2131 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2132 rxcsum |= E1000_RXCSUM_TUOFL;
2133
2134 /* IPv4 payload checksum for UDP fragments must be
2135 * used in conjunction with packet-split. */
2136 if (adapter->rx_ps_pages)
2137 rxcsum |= E1000_RXCSUM_IPPCSE;
2138 } else {
2139 rxcsum &= ~E1000_RXCSUM_TUOFL;
2140 /* no need to clear IPPCSE as it defaults to 0 */
2141 }
2142 ew32(RXCSUM, rxcsum);
2143
2144 /* Enable early receives on supported devices, only takes effect when
2145 * packet size is equal or larger than the specified value (in 8 byte
2146 * units), e.g. using jumbo frames when setting to E1000_ERT_2048 */
2147 if ((adapter->flags & FLAG_HAS_ERT) &&
2148 (adapter->netdev->mtu > ETH_DATA_LEN))
2149 ew32(ERT, E1000_ERT_2048);
2150
2151 /* Enable Receives */
2152 ew32(RCTL, rctl);
2153}
2154
2155/**
2156 * e1000_mc_addr_list_update - Update Multicast addresses
2157 * @hw: pointer to the HW structure
2158 * @mc_addr_list: array of multicast addresses to program
2159 * @mc_addr_count: number of multicast addresses to program
2160 * @rar_used_count: the first RAR register free to program
2161 * @rar_count: total number of supported Receive Address Registers
2162 *
2163 * Updates the Receive Address Registers and Multicast Table Array.
2164 * The caller must have a packed mc_addr_list of multicast addresses.
2165 * The parameter rar_count will usually be hw->mac.rar_entry_count
2166 * unless there are workarounds that change this. Currently no func pointer
2167 * exists and all implementations are handled in the generic version of this
2168 * function.
2169 **/
2170static void e1000_mc_addr_list_update(struct e1000_hw *hw, u8 *mc_addr_list,
2171 u32 mc_addr_count, u32 rar_used_count,
2172 u32 rar_count)
2173{
2174 hw->mac.ops.mc_addr_list_update(hw, mc_addr_list, mc_addr_count,
2175 rar_used_count, rar_count);
2176}
2177
2178/**
2179 * e1000_set_multi - Multicast and Promiscuous mode set
2180 * @netdev: network interface device structure
2181 *
2182 * The set_multi entry point is called whenever the multicast address
2183 * list or the network interface flags are updated. This routine is
2184 * responsible for configuring the hardware for proper multicast,
2185 * promiscuous mode, and all-multi behavior.
2186 **/
2187static void e1000_set_multi(struct net_device *netdev)
2188{
2189 struct e1000_adapter *adapter = netdev_priv(netdev);
2190 struct e1000_hw *hw = &adapter->hw;
2191 struct e1000_mac_info *mac = &hw->mac;
2192 struct dev_mc_list *mc_ptr;
2193 u8 *mta_list;
2194 u32 rctl;
2195 int i;
2196
2197 /* Check for Promiscuous and All Multicast modes */
2198
2199 rctl = er32(RCTL);
2200
2201 if (netdev->flags & IFF_PROMISC) {
2202 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2203 } else if (netdev->flags & IFF_ALLMULTI) {
2204 rctl |= E1000_RCTL_MPE;
2205 rctl &= ~E1000_RCTL_UPE;
2206 } else {
2207 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2208 }
2209
2210 ew32(RCTL, rctl);
2211
2212 if (netdev->mc_count) {
2213 mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
2214 if (!mta_list)
2215 return;
2216
2217 /* prepare a packed array of only addresses. */
2218 mc_ptr = netdev->mc_list;
2219
2220 for (i = 0; i < netdev->mc_count; i++) {
2221 if (!mc_ptr)
2222 break;
2223 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
2224 ETH_ALEN);
2225 mc_ptr = mc_ptr->next;
2226 }
2227
2228 e1000_mc_addr_list_update(hw, mta_list, i, 1,
2229 mac->rar_entry_count);
2230 kfree(mta_list);
2231 } else {
2232 /*
2233 * if we're called from probe, we might not have
2234 * anything to do here, so clear out the list
2235 */
2236 e1000_mc_addr_list_update(hw, NULL, 0, 1,
2237 mac->rar_entry_count);
2238 }
2239}
2240
2241/**
2242 * e1000_configure - configure the hardware for RX and TX
2243 * @adapter: private board structure
2244 **/
2245static void e1000_configure(struct e1000_adapter *adapter)
2246{
2247 e1000_set_multi(adapter->netdev);
2248
2249 e1000_restore_vlan(adapter);
2250 e1000_init_manageability(adapter);
2251
2252 e1000_configure_tx(adapter);
2253 e1000_setup_rctl(adapter);
2254 e1000_configure_rx(adapter);
2255 adapter->alloc_rx_buf(adapter,
2256 e1000_desc_unused(adapter->rx_ring));
2257}
2258
2259/**
2260 * e1000e_power_up_phy - restore link in case the phy was powered down
2261 * @adapter: address of board private structure
2262 *
2263 * The phy may be powered down to save power and turn off link when the
2264 * driver is unloaded and wake on lan is not enabled (among others)
2265 * *** this routine MUST be followed by a call to e1000e_reset ***
2266 **/
2267void e1000e_power_up_phy(struct e1000_adapter *adapter)
2268{
2269 u16 mii_reg = 0;
2270
2271 /* Just clear the power down bit to wake the phy back up */
2272 if (adapter->hw.media_type == e1000_media_type_copper) {
2273 /* according to the manual, the phy will retain its
2274 * settings across a power-down/up cycle */
2275 e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg);
2276 mii_reg &= ~MII_CR_POWER_DOWN;
2277 e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg);
2278 }
2279
2280 adapter->hw.mac.ops.setup_link(&adapter->hw);
2281}
2282
2283/**
2284 * e1000_power_down_phy - Power down the PHY
2285 *
2286 * Power down the PHY so no link is implied when interface is down
2287 * The PHY cannot be powered down is management or WoL is active
2288 */
2289static void e1000_power_down_phy(struct e1000_adapter *adapter)
2290{
2291 struct e1000_hw *hw = &adapter->hw;
2292 u16 mii_reg;
2293
2294 /* WoL is enabled */
2295 if (!adapter->wol)
2296 return;
2297
2298 /* non-copper PHY? */
2299 if (adapter->hw.media_type != e1000_media_type_copper)
2300 return;
2301
2302 /* reset is blocked because of a SoL/IDER session */
2303 if (e1000e_check_mng_mode(hw) ||
2304 e1000_check_reset_block(hw))
2305 return;
2306
2307 /* managebility (AMT) is enabled */
2308 if (er32(MANC) & E1000_MANC_SMBUS_EN)
2309 return;
2310
2311 /* power down the PHY */
2312 e1e_rphy(hw, PHY_CONTROL, &mii_reg);
2313 mii_reg |= MII_CR_POWER_DOWN;
2314 e1e_wphy(hw, PHY_CONTROL, mii_reg);
2315 mdelay(1);
2316}
2317
2318/**
2319 * e1000e_reset - bring the hardware into a known good state
2320 *
2321 * This function boots the hardware and enables some settings that
2322 * require a configuration cycle of the hardware - those cannot be
2323 * set/changed during runtime. After reset the device needs to be
2324 * properly configured for rx, tx etc.
2325 */
2326void e1000e_reset(struct e1000_adapter *adapter)
2327{
2328 struct e1000_mac_info *mac = &adapter->hw.mac;
2329 struct e1000_hw *hw = &adapter->hw;
2330 u32 tx_space, min_tx_space, min_rx_space;
2331 u16 hwm;
2332
2333 if (mac->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN ) {
2334 /* To maintain wire speed transmits, the Tx FIFO should be
2335 * large enough to accommodate two full transmit packets,
2336 * rounded up to the next 1KB and expressed in KB. Likewise,
2337 * the Rx FIFO should be large enough to accommodate at least
2338 * one full receive packet and is similarly rounded up and
2339 * expressed in KB. */
2340 adapter->pba = er32(PBA);
2341 /* upper 16 bits has Tx packet buffer allocation size in KB */
2342 tx_space = adapter->pba >> 16;
2343 /* lower 16 bits has Rx packet buffer allocation size in KB */
2344 adapter->pba &= 0xffff;
2345 /* the tx fifo also stores 16 bytes of information about the tx
2346 * but don't include ethernet FCS because hardware appends it */
2347 min_tx_space = (mac->max_frame_size +
2348 sizeof(struct e1000_tx_desc) -
2349 ETH_FCS_LEN) * 2;
2350 min_tx_space = ALIGN(min_tx_space, 1024);
2351 min_tx_space >>= 10;
2352 /* software strips receive CRC, so leave room for it */
2353 min_rx_space = mac->max_frame_size;
2354 min_rx_space = ALIGN(min_rx_space, 1024);
2355 min_rx_space >>= 10;
2356
2357 /* If current Tx allocation is less than the min Tx FIFO size,
2358 * and the min Tx FIFO size is less than the current Rx FIFO
2359 * allocation, take space away from current Rx allocation */
2360 if (tx_space < min_tx_space &&
2361 ((min_tx_space - tx_space) < adapter->pba)) {
2362 adapter->pba -= - (min_tx_space - tx_space);
2363
2364 /* if short on rx space, rx wins and must trump tx
2365 * adjustment or use Early Receive if available */
2366 if ((adapter->pba < min_rx_space) &&
2367 (!(adapter->flags & FLAG_HAS_ERT)))
2368 /* ERT enabled in e1000_configure_rx */
2369 adapter->pba = min_rx_space;
2370 }
2371 }
2372
2373 ew32(PBA, adapter->pba);
2374
2375 /* flow control settings */
2376 /* The high water mark must be low enough to fit one full frame
2377 * (or the size used for early receive) above it in the Rx FIFO.
2378 * Set it to the lower of:
2379 * - 90% of the Rx FIFO size, and
2380 * - the full Rx FIFO size minus the early receive size (for parts
2381 * with ERT support assuming ERT set to E1000_ERT_2048), or
2382 * - the full Rx FIFO size minus one full frame */
2383 if (adapter->flags & FLAG_HAS_ERT)
2384 hwm = min(((adapter->pba << 10) * 9 / 10),
2385 ((adapter->pba << 10) - (E1000_ERT_2048 << 3)));
2386 else
2387 hwm = min(((adapter->pba << 10) * 9 / 10),
2388 ((adapter->pba << 10) - mac->max_frame_size));
2389
2390 mac->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */
2391 mac->fc_low_water = mac->fc_high_water - 8;
2392
2393 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
2394 mac->fc_pause_time = 0xFFFF;
2395 else
2396 mac->fc_pause_time = E1000_FC_PAUSE_TIME;
2397 mac->fc = mac->original_fc;
2398
2399 /* Allow time for pending master requests to run */
2400 mac->ops.reset_hw(hw);
2401 ew32(WUC, 0);
2402
2403 if (mac->ops.init_hw(hw))
2404 ndev_err(adapter->netdev, "Hardware Error\n");
2405
2406 e1000_update_mng_vlan(adapter);
2407
2408 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2409 ew32(VET, ETH_P_8021Q);
2410
2411 e1000e_reset_adaptive(hw);
2412 e1000_get_phy_info(hw);
2413
2414 if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) {
2415 u16 phy_data = 0;
2416 /* speed up time to link by disabling smart power down, ignore
2417 * the return value of this function because there is nothing
2418 * different we would do if it failed */
2419 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
2420 phy_data &= ~IGP02E1000_PM_SPD;
2421 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
2422 }
2423
2424 e1000_release_manageability(adapter);
2425}
2426
2427int e1000e_up(struct e1000_adapter *adapter)
2428{
2429 struct e1000_hw *hw = &adapter->hw;
2430
2431 /* hardware has been reset, we need to reload some things */
2432 e1000_configure(adapter);
2433
2434 clear_bit(__E1000_DOWN, &adapter->state);
2435
2436 napi_enable(&adapter->napi);
2437 e1000_irq_enable(adapter);
2438
2439 /* fire a link change interrupt to start the watchdog */
2440 ew32(ICS, E1000_ICS_LSC);
2441 return 0;
2442}
2443
2444void e1000e_down(struct e1000_adapter *adapter)
2445{
2446 struct net_device *netdev = adapter->netdev;
2447 struct e1000_hw *hw = &adapter->hw;
2448 u32 tctl, rctl;
2449
2450 /* signal that we're down so the interrupt handler does not
2451 * reschedule our watchdog timer */
2452 set_bit(__E1000_DOWN, &adapter->state);
2453
2454 /* disable receives in the hardware */
2455 rctl = er32(RCTL);
2456 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2457 /* flush and sleep below */
2458
2459 netif_stop_queue(netdev);
2460
2461 /* disable transmits in the hardware */
2462 tctl = er32(TCTL);
2463 tctl &= ~E1000_TCTL_EN;
2464 ew32(TCTL, tctl);
2465 /* flush both disables and wait for them to finish */
2466 e1e_flush();
2467 msleep(10);
2468
2469 napi_disable(&adapter->napi);
2470 e1000_irq_disable(adapter);
2471
2472 del_timer_sync(&adapter->watchdog_timer);
2473 del_timer_sync(&adapter->phy_info_timer);
2474
2475 netdev->tx_queue_len = adapter->tx_queue_len;
2476 netif_carrier_off(netdev);
2477 adapter->link_speed = 0;
2478 adapter->link_duplex = 0;
2479
2480 e1000e_reset(adapter);
2481 e1000_clean_tx_ring(adapter);
2482 e1000_clean_rx_ring(adapter);
2483
2484 /*
2485 * TODO: for power management, we could drop the link and
2486 * pci_disable_device here.
2487 */
2488}
2489
2490void e1000e_reinit_locked(struct e1000_adapter *adapter)
2491{
2492 might_sleep();
2493 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
2494 msleep(1);
2495 e1000e_down(adapter);
2496 e1000e_up(adapter);
2497 clear_bit(__E1000_RESETTING, &adapter->state);
2498}
2499
2500/**
2501 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2502 * @adapter: board private structure to initialize
2503 *
2504 * e1000_sw_init initializes the Adapter private data structure.
2505 * Fields are initialized based on PCI device information and
2506 * OS network device settings (MTU size).
2507 **/
2508static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
2509{
2510 struct e1000_hw *hw = &adapter->hw;
2511 struct net_device *netdev = adapter->netdev;
2512
2513 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
2514 adapter->rx_ps_bsize0 = 128;
2515 hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2516 hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2517
2518 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2519 if (!adapter->tx_ring)
2520 goto err;
2521
2522 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2523 if (!adapter->rx_ring)
2524 goto err;
2525
2526 spin_lock_init(&adapter->tx_queue_lock);
2527
2528 /* Explicitly disable IRQ since the NIC can be in any state. */
2529 atomic_set(&adapter->irq_sem, 0);
2530 e1000_irq_disable(adapter);
2531
2532 spin_lock_init(&adapter->stats_lock);
2533
2534 set_bit(__E1000_DOWN, &adapter->state);
2535 return 0;
2536
2537err:
2538 ndev_err(netdev, "Unable to allocate memory for queues\n");
2539 kfree(adapter->rx_ring);
2540 kfree(adapter->tx_ring);
2541 return -ENOMEM;
2542}
2543
2544/**
2545 * e1000_open - Called when a network interface is made active
2546 * @netdev: network interface device structure
2547 *
2548 * Returns 0 on success, negative value on failure
2549 *
2550 * The open entry point is called when a network interface is made
2551 * active by the system (IFF_UP). At this point all resources needed
2552 * for transmit and receive operations are allocated, the interrupt
2553 * handler is registered with the OS, the watchdog timer is started,
2554 * and the stack is notified that the interface is ready.
2555 **/
2556static int e1000_open(struct net_device *netdev)
2557{
2558 struct e1000_adapter *adapter = netdev_priv(netdev);
2559 struct e1000_hw *hw = &adapter->hw;
2560 int err;
2561
2562 /* disallow open during test */
2563 if (test_bit(__E1000_TESTING, &adapter->state))
2564 return -EBUSY;
2565
2566 /* allocate transmit descriptors */
2567 err = e1000e_setup_tx_resources(adapter);
2568 if (err)
2569 goto err_setup_tx;
2570
2571 /* allocate receive descriptors */
2572 err = e1000e_setup_rx_resources(adapter);
2573 if (err)
2574 goto err_setup_rx;
2575
2576 e1000e_power_up_phy(adapter);
2577
2578 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2579 if ((adapter->hw.mng_cookie.status &
2580 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
2581 e1000_update_mng_vlan(adapter);
2582
2583 /* If AMT is enabled, let the firmware know that the network
2584 * interface is now open */
2585 if ((adapter->flags & FLAG_HAS_AMT) &&
2586 e1000e_check_mng_mode(&adapter->hw))
2587 e1000_get_hw_control(adapter);
2588
2589 /* before we allocate an interrupt, we must be ready to handle it.
2590 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
2591 * as soon as we call pci_request_irq, so we have to setup our
2592 * clean_rx handler before we do so. */
2593 e1000_configure(adapter);
2594
2595 err = e1000_request_irq(adapter);
2596 if (err)
2597 goto err_req_irq;
2598
2599 /* From here on the code is the same as e1000e_up() */
2600 clear_bit(__E1000_DOWN, &adapter->state);
2601
2602 napi_enable(&adapter->napi);
2603
2604 e1000_irq_enable(adapter);
2605
2606 /* fire a link status change interrupt to start the watchdog */
2607 ew32(ICS, E1000_ICS_LSC);
2608
2609 return 0;
2610
2611err_req_irq:
2612 e1000_release_hw_control(adapter);
2613 e1000_power_down_phy(adapter);
2614 e1000e_free_rx_resources(adapter);
2615err_setup_rx:
2616 e1000e_free_tx_resources(adapter);
2617err_setup_tx:
2618 e1000e_reset(adapter);
2619
2620 return err;
2621}
2622
2623/**
2624 * e1000_close - Disables a network interface
2625 * @netdev: network interface device structure
2626 *
2627 * Returns 0, this is not allowed to fail
2628 *
2629 * The close entry point is called when an interface is de-activated
2630 * by the OS. The hardware is still under the drivers control, but
2631 * needs to be disabled. A global MAC reset is issued to stop the
2632 * hardware, and all transmit and receive resources are freed.
2633 **/
2634static int e1000_close(struct net_device *netdev)
2635{
2636 struct e1000_adapter *adapter = netdev_priv(netdev);
2637
2638 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
2639 e1000e_down(adapter);
2640 e1000_power_down_phy(adapter);
2641 e1000_free_irq(adapter);
2642
2643 e1000e_free_tx_resources(adapter);
2644 e1000e_free_rx_resources(adapter);
2645
2646 /* kill manageability vlan ID if supported, but not if a vlan with
2647 * the same ID is registered on the host OS (let 8021q kill it) */
2648 if ((adapter->hw.mng_cookie.status &
2649 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2650 !(adapter->vlgrp &&
2651 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
2652 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2653
2654 /* If AMT is enabled, let the firmware know that the network
2655 * interface is now closed */
2656 if ((adapter->flags & FLAG_HAS_AMT) &&
2657 e1000e_check_mng_mode(&adapter->hw))
2658 e1000_release_hw_control(adapter);
2659
2660 return 0;
2661}
2662/**
2663 * e1000_set_mac - Change the Ethernet Address of the NIC
2664 * @netdev: network interface device structure
2665 * @p: pointer to an address structure
2666 *
2667 * Returns 0 on success, negative on failure
2668 **/
2669static int e1000_set_mac(struct net_device *netdev, void *p)
2670{
2671 struct e1000_adapter *adapter = netdev_priv(netdev);
2672 struct sockaddr *addr = p;
2673
2674 if (!is_valid_ether_addr(addr->sa_data))
2675 return -EADDRNOTAVAIL;
2676
2677 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2678 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
2679
2680 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
2681
2682 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
2683 /* activate the work around */
2684 e1000e_set_laa_state_82571(&adapter->hw, 1);
2685
2686 /* Hold a copy of the LAA in RAR[14] This is done so that
2687 * between the time RAR[0] gets clobbered and the time it
2688 * gets fixed (in e1000_watchdog), the actual LAA is in one
2689 * of the RARs and no incoming packets directed to this port
2690 * are dropped. Eventually the LAA will be in RAR[0] and
2691 * RAR[14] */
2692 e1000e_rar_set(&adapter->hw,
2693 adapter->hw.mac.addr,
2694 adapter->hw.mac.rar_entry_count - 1);
2695 }
2696
2697 return 0;
2698}
2699
2700/* Need to wait a few seconds after link up to get diagnostic information from
2701 * the phy */
2702static void e1000_update_phy_info(unsigned long data)
2703{
2704 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2705 e1000_get_phy_info(&adapter->hw);
2706}
2707
2708/**
2709 * e1000e_update_stats - Update the board statistics counters
2710 * @adapter: board private structure
2711 **/
2712void e1000e_update_stats(struct e1000_adapter *adapter)
2713{
2714 struct e1000_hw *hw = &adapter->hw;
2715 struct pci_dev *pdev = adapter->pdev;
2716 unsigned long irq_flags;
2717 u16 phy_tmp;
2718
2719#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2720
2721 /*
2722 * Prevent stats update while adapter is being reset, or if the pci
2723 * connection is down.
2724 */
2725 if (adapter->link_speed == 0)
2726 return;
2727 if (pci_channel_offline(pdev))
2728 return;
2729
2730 spin_lock_irqsave(&adapter->stats_lock, irq_flags);
2731
2732 /* these counters are modified from e1000_adjust_tbi_stats,
2733 * called from the interrupt context, so they must only
2734 * be written while holding adapter->stats_lock
2735 */
2736
2737 adapter->stats.crcerrs += er32(CRCERRS);
2738 adapter->stats.gprc += er32(GPRC);
2739 adapter->stats.gorcl += er32(GORCL);
2740 adapter->stats.gorch += er32(GORCH);
2741 adapter->stats.bprc += er32(BPRC);
2742 adapter->stats.mprc += er32(MPRC);
2743 adapter->stats.roc += er32(ROC);
2744
2745 if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) {
2746 adapter->stats.prc64 += er32(PRC64);
2747 adapter->stats.prc127 += er32(PRC127);
2748 adapter->stats.prc255 += er32(PRC255);
2749 adapter->stats.prc511 += er32(PRC511);
2750 adapter->stats.prc1023 += er32(PRC1023);
2751 adapter->stats.prc1522 += er32(PRC1522);
2752 adapter->stats.symerrs += er32(SYMERRS);
2753 adapter->stats.sec += er32(SEC);
2754 }
2755
2756 adapter->stats.mpc += er32(MPC);
2757 adapter->stats.scc += er32(SCC);
2758 adapter->stats.ecol += er32(ECOL);
2759 adapter->stats.mcc += er32(MCC);
2760 adapter->stats.latecol += er32(LATECOL);
2761 adapter->stats.dc += er32(DC);
2762 adapter->stats.rlec += er32(RLEC);
2763 adapter->stats.xonrxc += er32(XONRXC);
2764 adapter->stats.xontxc += er32(XONTXC);
2765 adapter->stats.xoffrxc += er32(XOFFRXC);
2766 adapter->stats.xofftxc += er32(XOFFTXC);
2767 adapter->stats.fcruc += er32(FCRUC);
2768 adapter->stats.gptc += er32(GPTC);
2769 adapter->stats.gotcl += er32(GOTCL);
2770 adapter->stats.gotch += er32(GOTCH);
2771 adapter->stats.rnbc += er32(RNBC);
2772 adapter->stats.ruc += er32(RUC);
2773 adapter->stats.rfc += er32(RFC);
2774 adapter->stats.rjc += er32(RJC);
2775 adapter->stats.torl += er32(TORL);
2776 adapter->stats.torh += er32(TORH);
2777 adapter->stats.totl += er32(TOTL);
2778 adapter->stats.toth += er32(TOTH);
2779 adapter->stats.tpr += er32(TPR);
2780
2781 if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) {
2782 adapter->stats.ptc64 += er32(PTC64);
2783 adapter->stats.ptc127 += er32(PTC127);
2784 adapter->stats.ptc255 += er32(PTC255);
2785 adapter->stats.ptc511 += er32(PTC511);
2786 adapter->stats.ptc1023 += er32(PTC1023);
2787 adapter->stats.ptc1522 += er32(PTC1522);
2788 }
2789
2790 adapter->stats.mptc += er32(MPTC);
2791 adapter->stats.bptc += er32(BPTC);
2792
2793 /* used for adaptive IFS */
2794
2795 hw->mac.tx_packet_delta = er32(TPT);
2796 adapter->stats.tpt += hw->mac.tx_packet_delta;
2797 hw->mac.collision_delta = er32(COLC);
2798 adapter->stats.colc += hw->mac.collision_delta;
2799
2800 adapter->stats.algnerrc += er32(ALGNERRC);
2801 adapter->stats.rxerrc += er32(RXERRC);
2802 adapter->stats.tncrs += er32(TNCRS);
2803 adapter->stats.cexterr += er32(CEXTERR);
2804 adapter->stats.tsctc += er32(TSCTC);
2805 adapter->stats.tsctfc += er32(TSCTFC);
2806
2807 adapter->stats.iac += er32(IAC);
2808
2809 if (adapter->flags & FLAG_HAS_STATS_ICR_ICT) {
2810 adapter->stats.icrxoc += er32(ICRXOC);
2811 adapter->stats.icrxptc += er32(ICRXPTC);
2812 adapter->stats.icrxatc += er32(ICRXATC);
2813 adapter->stats.ictxptc += er32(ICTXPTC);
2814 adapter->stats.ictxatc += er32(ICTXATC);
2815 adapter->stats.ictxqec += er32(ICTXQEC);
2816 adapter->stats.ictxqmtc += er32(ICTXQMTC);
2817 adapter->stats.icrxdmtc += er32(ICRXDMTC);
2818 }
2819
2820 /* Fill out the OS statistics structure */
2821 adapter->net_stats.rx_packets = adapter->stats.gprc;
2822 adapter->net_stats.tx_packets = adapter->stats.gptc;
2823 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
2824 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
2825 adapter->net_stats.multicast = adapter->stats.mprc;
2826 adapter->net_stats.collisions = adapter->stats.colc;
2827
2828 /* Rx Errors */
2829
2830 /* RLEC on some newer hardware can be incorrect so build
2831 * our own version based on RUC and ROC */
2832 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
2833 adapter->stats.crcerrs + adapter->stats.algnerrc +
2834 adapter->stats.ruc + adapter->stats.roc +
2835 adapter->stats.cexterr;
2836 adapter->net_stats.rx_length_errors = adapter->stats.ruc +
2837 adapter->stats.roc;
2838 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
2839 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
2840 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
2841
2842 /* Tx Errors */
2843 adapter->net_stats.tx_errors = adapter->stats.ecol +
2844 adapter->stats.latecol;
2845 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
2846 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
2847 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
2848
2849 /* Tx Dropped needs to be maintained elsewhere */
2850
2851 /* Phy Stats */
2852 if (hw->media_type == e1000_media_type_copper) {
2853 if ((adapter->link_speed == SPEED_1000) &&
2854 (!e1e_rphy(hw, PHY_1000T_STATUS, &phy_tmp))) {
2855 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
2856 adapter->phy_stats.idle_errors += phy_tmp;
2857 }
2858 }
2859
2860 /* Management Stats */
2861 adapter->stats.mgptc += er32(MGTPTC);
2862 adapter->stats.mgprc += er32(MGTPRC);
2863 adapter->stats.mgpdc += er32(MGTPDC);
2864
2865 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
2866}
2867
2868static void e1000_print_link_info(struct e1000_adapter *adapter)
2869{
2870 struct net_device *netdev = adapter->netdev;
2871 struct e1000_hw *hw = &adapter->hw;
2872 u32 ctrl = er32(CTRL);
2873
2874 ndev_info(netdev,
2875 "Link is Up %d Mbps %s, Flow Control: %s\n",
2876 adapter->link_speed,
2877 (adapter->link_duplex == FULL_DUPLEX) ?
2878 "Full Duplex" : "Half Duplex",
2879 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
2880 "RX/TX" :
2881 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
2882 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
2883}
2884
2885/**
2886 * e1000_watchdog - Timer Call-back
2887 * @data: pointer to adapter cast into an unsigned long
2888 **/
2889static void e1000_watchdog(unsigned long data)
2890{
2891 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2892
2893 /* Do the rest outside of interrupt context */
2894 schedule_work(&adapter->watchdog_task);
2895
2896 /* TODO: make this use queue_delayed_work() */
2897}
2898
2899static void e1000_watchdog_task(struct work_struct *work)
2900{
2901 struct e1000_adapter *adapter = container_of(work,
2902 struct e1000_adapter, watchdog_task);
2903
2904 struct net_device *netdev = adapter->netdev;
2905 struct e1000_mac_info *mac = &adapter->hw.mac;
2906 struct e1000_ring *tx_ring = adapter->tx_ring;
2907 struct e1000_hw *hw = &adapter->hw;
2908 u32 link, tctl;
2909 s32 ret_val;
2910 int tx_pending = 0;
2911
2912 if ((netif_carrier_ok(netdev)) &&
2913 (er32(STATUS) & E1000_STATUS_LU))
2914 goto link_up;
2915
2916 ret_val = mac->ops.check_for_link(hw);
2917 if ((ret_val == E1000_ERR_PHY) &&
2918 (adapter->hw.phy.type == e1000_phy_igp_3) &&
2919 (er32(CTRL) &
2920 E1000_PHY_CTRL_GBE_DISABLE)) {
2921 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
2922 ndev_info(netdev,
2923 "Gigabit has been disabled, downgrading speed\n");
2924 }
2925
2926 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
2927 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
2928 e1000_update_mng_vlan(adapter);
2929
2930 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2931 !(er32(TXCW) & E1000_TXCW_ANE))
2932 link = adapter->hw.mac.serdes_has_link;
2933 else
2934 link = er32(STATUS) & E1000_STATUS_LU;
2935
2936 if (link) {
2937 if (!netif_carrier_ok(netdev)) {
2938 bool txb2b = 1;
2939 mac->ops.get_link_up_info(&adapter->hw,
2940 &adapter->link_speed,
2941 &adapter->link_duplex);
2942 e1000_print_link_info(adapter);
2943 /* tweak tx_queue_len according to speed/duplex
2944 * and adjust the timeout factor */
2945 netdev->tx_queue_len = adapter->tx_queue_len;
2946 adapter->tx_timeout_factor = 1;
2947 switch (adapter->link_speed) {
2948 case SPEED_10:
2949 txb2b = 0;
2950 netdev->tx_queue_len = 10;
2951 adapter->tx_timeout_factor = 14;
2952 break;
2953 case SPEED_100:
2954 txb2b = 0;
2955 netdev->tx_queue_len = 100;
2956 /* maybe add some timeout factor ? */
2957 break;
2958 }
2959
2960 /* workaround: re-program speed mode bit after
2961 * link-up event */
2962 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
2963 !txb2b) {
2964 u32 tarc0;
2965 tarc0 = er32(TARC0);
2966 tarc0 &= ~SPEED_MODE_BIT;
2967 ew32(TARC0, tarc0);
2968 }
2969
2970 /* disable TSO for pcie and 10/100 speeds, to avoid
2971 * some hardware issues */
2972 if (!(adapter->flags & FLAG_TSO_FORCE)) {
2973 switch (adapter->link_speed) {
2974 case SPEED_10:
2975 case SPEED_100:
2976 ndev_info(netdev,
2977 "10/100 speed: disabling TSO\n");
2978 netdev->features &= ~NETIF_F_TSO;
2979 netdev->features &= ~NETIF_F_TSO6;
2980 break;
2981 case SPEED_1000:
2982 netdev->features |= NETIF_F_TSO;
2983 netdev->features |= NETIF_F_TSO6;
2984 break;
2985 default:
2986 /* oops */
2987 break;
2988 }
2989 }
2990
2991 /* enable transmits in the hardware, need to do this
2992 * after setting TARC0 */
2993 tctl = er32(TCTL);
2994 tctl |= E1000_TCTL_EN;
2995 ew32(TCTL, tctl);
2996
2997 netif_carrier_on(netdev);
2998 netif_wake_queue(netdev);
2999
3000 if (!test_bit(__E1000_DOWN, &adapter->state))
3001 mod_timer(&adapter->phy_info_timer,
3002 round_jiffies(jiffies + 2 * HZ));
3003 } else {
3004 /* make sure the receive unit is started */
3005 if (adapter->flags & FLAG_RX_NEEDS_RESTART) {
3006 u32 rctl = er32(RCTL);
3007 ew32(RCTL, rctl |
3008 E1000_RCTL_EN);
3009 }
3010 }
3011 } else {
3012 if (netif_carrier_ok(netdev)) {
3013 adapter->link_speed = 0;
3014 adapter->link_duplex = 0;
3015 ndev_info(netdev, "Link is Down\n");
3016 netif_carrier_off(netdev);
3017 netif_stop_queue(netdev);
3018 if (!test_bit(__E1000_DOWN, &adapter->state))
3019 mod_timer(&adapter->phy_info_timer,
3020 round_jiffies(jiffies + 2 * HZ));
3021
3022 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
3023 schedule_work(&adapter->reset_task);
3024 }
3025 }
3026
3027link_up:
3028 e1000e_update_stats(adapter);
3029
3030 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
3031 adapter->tpt_old = adapter->stats.tpt;
3032 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
3033 adapter->colc_old = adapter->stats.colc;
3034
3035 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
3036 adapter->gorcl_old = adapter->stats.gorcl;
3037 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
3038 adapter->gotcl_old = adapter->stats.gotcl;
3039
3040 e1000e_update_adaptive(&adapter->hw);
3041
3042 if (!netif_carrier_ok(netdev)) {
3043 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
3044 tx_ring->count);
3045 if (tx_pending) {
3046 /* We've lost link, so the controller stops DMA,
3047 * but we've got queued Tx work that's never going
3048 * to get done, so reset controller to flush Tx.
3049 * (Do the reset outside of interrupt context). */
3050 adapter->tx_timeout_count++;
3051 schedule_work(&adapter->reset_task);
3052 }
3053 }
3054
3055 /* Cause software interrupt to ensure rx ring is cleaned */
3056 ew32(ICS, E1000_ICS_RXDMT0);
3057
3058 /* Force detection of hung controller every watchdog period */
3059 adapter->detect_tx_hung = 1;
3060
3061 /* With 82571 controllers, LAA may be overwritten due to controller
3062 * reset from the other port. Set the appropriate LAA in RAR[0] */
3063 if (e1000e_get_laa_state_82571(hw))
3064 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
3065
3066 /* Reset the timer */
3067 if (!test_bit(__E1000_DOWN, &adapter->state))
3068 mod_timer(&adapter->watchdog_timer,
3069 round_jiffies(jiffies + 2 * HZ));
3070}
3071
3072#define E1000_TX_FLAGS_CSUM 0x00000001
3073#define E1000_TX_FLAGS_VLAN 0x00000002
3074#define E1000_TX_FLAGS_TSO 0x00000004
3075#define E1000_TX_FLAGS_IPV4 0x00000008
3076#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3077#define E1000_TX_FLAGS_VLAN_SHIFT 16
3078
3079static int e1000_tso(struct e1000_adapter *adapter,
3080 struct sk_buff *skb)
3081{
3082 struct e1000_ring *tx_ring = adapter->tx_ring;
3083 struct e1000_context_desc *context_desc;
3084 struct e1000_buffer *buffer_info;
3085 unsigned int i;
3086 u32 cmd_length = 0;
3087 u16 ipcse = 0, tucse, mss;
3088 u8 ipcss, ipcso, tucss, tucso, hdr_len;
3089 int err;
3090
3091 if (skb_is_gso(skb)) {
3092 if (skb_header_cloned(skb)) {
3093 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
3094 if (err)
3095 return err;
3096 }
3097
3098 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3099 mss = skb_shinfo(skb)->gso_size;
3100 if (skb->protocol == htons(ETH_P_IP)) {
3101 struct iphdr *iph = ip_hdr(skb);
3102 iph->tot_len = 0;
3103 iph->check = 0;
3104 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
3105 iph->daddr, 0,
3106 IPPROTO_TCP,
3107 0);
3108 cmd_length = E1000_TXD_CMD_IP;
3109 ipcse = skb_transport_offset(skb) - 1;
3110 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
3111 ipv6_hdr(skb)->payload_len = 0;
3112 tcp_hdr(skb)->check =
3113 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3114 &ipv6_hdr(skb)->daddr,
3115 0, IPPROTO_TCP, 0);
3116 ipcse = 0;
3117 }
3118 ipcss = skb_network_offset(skb);
3119 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
3120 tucss = skb_transport_offset(skb);
3121 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
3122 tucse = 0;
3123
3124 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
3125 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
3126
3127 i = tx_ring->next_to_use;
3128 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3129 buffer_info = &tx_ring->buffer_info[i];
3130
3131 context_desc->lower_setup.ip_fields.ipcss = ipcss;
3132 context_desc->lower_setup.ip_fields.ipcso = ipcso;
3133 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
3134 context_desc->upper_setup.tcp_fields.tucss = tucss;
3135 context_desc->upper_setup.tcp_fields.tucso = tucso;
3136 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
3137 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
3138 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
3139 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
3140
3141 buffer_info->time_stamp = jiffies;
3142 buffer_info->next_to_watch = i;
3143
3144 i++;
3145 if (i == tx_ring->count)
3146 i = 0;
3147 tx_ring->next_to_use = i;
3148
3149 return 1;
3150 }
3151
3152 return 0;
3153}
3154
3155static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
3156{
3157 struct e1000_ring *tx_ring = adapter->tx_ring;
3158 struct e1000_context_desc *context_desc;
3159 struct e1000_buffer *buffer_info;
3160 unsigned int i;
3161 u8 css;
3162
3163 if (skb->ip_summed == CHECKSUM_PARTIAL) {
3164 css = skb_transport_offset(skb);
3165
3166 i = tx_ring->next_to_use;
3167 buffer_info = &tx_ring->buffer_info[i];
3168 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3169
3170 context_desc->lower_setup.ip_config = 0;
3171 context_desc->upper_setup.tcp_fields.tucss = css;
3172 context_desc->upper_setup.tcp_fields.tucso =
3173 css + skb->csum_offset;
3174 context_desc->upper_setup.tcp_fields.tucse = 0;
3175 context_desc->tcp_seg_setup.data = 0;
3176 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
3177
3178 buffer_info->time_stamp = jiffies;
3179 buffer_info->next_to_watch = i;
3180
3181 i++;
3182 if (i == tx_ring->count)
3183 i = 0;
3184 tx_ring->next_to_use = i;
3185
3186 return 1;
3187 }
3188
3189 return 0;
3190}
3191
3192#define E1000_MAX_PER_TXD 8192
3193#define E1000_MAX_TXD_PWR 12
3194
3195static int e1000_tx_map(struct e1000_adapter *adapter,
3196 struct sk_buff *skb, unsigned int first,
3197 unsigned int max_per_txd, unsigned int nr_frags,
3198 unsigned int mss)
3199{
3200 struct e1000_ring *tx_ring = adapter->tx_ring;
3201 struct e1000_buffer *buffer_info;
3202 unsigned int len = skb->len - skb->data_len;
3203 unsigned int offset = 0, size, count = 0, i;
3204 unsigned int f;
3205
3206 i = tx_ring->next_to_use;
3207
3208 while (len) {
3209 buffer_info = &tx_ring->buffer_info[i];
3210 size = min(len, max_per_txd);
3211
3212 /* Workaround for premature desc write-backs
3213 * in TSO mode. Append 4-byte sentinel desc */
3214 if (mss && !nr_frags && size == len && size > 8)
3215 size -= 4;
3216
3217 buffer_info->length = size;
3218 /* set time_stamp *before* dma to help avoid a possible race */
3219 buffer_info->time_stamp = jiffies;
3220 buffer_info->dma =
3221 pci_map_single(adapter->pdev,
3222 skb->data + offset,
3223 size,
3224 PCI_DMA_TODEVICE);
3225 if (pci_dma_mapping_error(buffer_info->dma)) {
3226 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
3227 adapter->tx_dma_failed++;
3228 return -1;
3229 }
3230 buffer_info->next_to_watch = i;
3231
3232 len -= size;
3233 offset += size;
3234 count++;
3235 i++;
3236 if (i == tx_ring->count)
3237 i = 0;
3238 }
3239
3240 for (f = 0; f < nr_frags; f++) {
3241 struct skb_frag_struct *frag;
3242
3243 frag = &skb_shinfo(skb)->frags[f];
3244 len = frag->size;
3245 offset = frag->page_offset;
3246
3247 while (len) {
3248 buffer_info = &tx_ring->buffer_info[i];
3249 size = min(len, max_per_txd);
3250 /* Workaround for premature desc write-backs
3251 * in TSO mode. Append 4-byte sentinel desc */
3252 if (mss && f == (nr_frags-1) && size == len && size > 8)
3253 size -= 4;
3254
3255 buffer_info->length = size;
3256 buffer_info->time_stamp = jiffies;
3257 buffer_info->dma =
3258 pci_map_page(adapter->pdev,
3259 frag->page,
3260 offset,
3261 size,
3262 PCI_DMA_TODEVICE);
3263 if (pci_dma_mapping_error(buffer_info->dma)) {
3264 dev_err(&adapter->pdev->dev,
3265 "TX DMA page map failed\n");
3266 adapter->tx_dma_failed++;
3267 return -1;
3268 }
3269
3270 buffer_info->next_to_watch = i;
3271
3272 len -= size;
3273 offset += size;
3274 count++;
3275
3276 i++;
3277 if (i == tx_ring->count)
3278 i = 0;
3279 }
3280 }
3281
3282 if (i == 0)
3283 i = tx_ring->count - 1;
3284 else
3285 i--;
3286
3287 tx_ring->buffer_info[i].skb = skb;
3288 tx_ring->buffer_info[first].next_to_watch = i;
3289
3290 return count;
3291}
3292
3293static void e1000_tx_queue(struct e1000_adapter *adapter,
3294 int tx_flags, int count)
3295{
3296 struct e1000_ring *tx_ring = adapter->tx_ring;
3297 struct e1000_tx_desc *tx_desc = NULL;
3298 struct e1000_buffer *buffer_info;
3299 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3300 unsigned int i;
3301
3302 if (tx_flags & E1000_TX_FLAGS_TSO) {
3303 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3304 E1000_TXD_CMD_TSE;
3305 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3306
3307 if (tx_flags & E1000_TX_FLAGS_IPV4)
3308 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
3309 }
3310
3311 if (tx_flags & E1000_TX_FLAGS_CSUM) {
3312 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3313 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3314 }
3315
3316 if (tx_flags & E1000_TX_FLAGS_VLAN) {
3317 txd_lower |= E1000_TXD_CMD_VLE;
3318 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3319 }
3320
3321 i = tx_ring->next_to_use;
3322
3323 while (count--) {
3324 buffer_info = &tx_ring->buffer_info[i];
3325 tx_desc = E1000_TX_DESC(*tx_ring, i);
3326 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3327 tx_desc->lower.data =
3328 cpu_to_le32(txd_lower | buffer_info->length);
3329 tx_desc->upper.data = cpu_to_le32(txd_upper);
3330
3331 i++;
3332 if (i == tx_ring->count)
3333 i = 0;
3334 }
3335
3336 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3337
3338 /* Force memory writes to complete before letting h/w
3339 * know there are new descriptors to fetch. (Only
3340 * applicable for weak-ordered memory model archs,
3341 * such as IA-64). */
3342 wmb();
3343
3344 tx_ring->next_to_use = i;
3345 writel(i, adapter->hw.hw_addr + tx_ring->tail);
3346 /* we need this if more than one processor can write to our tail
3347 * at a time, it synchronizes IO on IA64/Altix systems */
3348 mmiowb();
3349}
3350
3351#define MINIMUM_DHCP_PACKET_SIZE 282
3352static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
3353 struct sk_buff *skb)
3354{
3355 struct e1000_hw *hw = &adapter->hw;
3356 u16 length, offset;
3357
3358 if (vlan_tx_tag_present(skb)) {
3359 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id)
3360 && (adapter->hw.mng_cookie.status &
3361 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
3362 return 0;
3363 }
3364
3365 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
3366 return 0;
3367
3368 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
3369 return 0;
3370
3371 {
3372 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
3373 struct udphdr *udp;
3374
3375 if (ip->protocol != IPPROTO_UDP)
3376 return 0;
3377
3378 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
3379 if (ntohs(udp->dest) != 67)
3380 return 0;
3381
3382 offset = (u8 *)udp + 8 - skb->data;
3383 length = skb->len - offset;
3384 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
3385 }
3386
3387 return 0;
3388}
3389
3390static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3391{
3392 struct e1000_adapter *adapter = netdev_priv(netdev);
3393
3394 netif_stop_queue(netdev);
3395 /* Herbert's original patch had:
3396 * smp_mb__after_netif_stop_queue();
3397 * but since that doesn't exist yet, just open code it. */
3398 smp_mb();
3399
3400 /* We need to check again in a case another CPU has just
3401 * made room available. */
3402 if (e1000_desc_unused(adapter->tx_ring) < size)
3403 return -EBUSY;
3404
3405 /* A reprieve! */
3406 netif_start_queue(netdev);
3407 ++adapter->restart_queue;
3408 return 0;
3409}
3410
3411static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
3412{
3413 struct e1000_adapter *adapter = netdev_priv(netdev);
3414
3415 if (e1000_desc_unused(adapter->tx_ring) >= size)
3416 return 0;
3417 return __e1000_maybe_stop_tx(netdev, size);
3418}
3419
3420#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3421static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3422{
3423 struct e1000_adapter *adapter = netdev_priv(netdev);
3424 struct e1000_ring *tx_ring = adapter->tx_ring;
3425 unsigned int first;
3426 unsigned int max_per_txd = E1000_MAX_PER_TXD;
3427 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3428 unsigned int tx_flags = 0;
3429 unsigned int len = skb->len;
3430 unsigned long irq_flags;
3431 unsigned int nr_frags = 0;
3432 unsigned int mss = 0;
3433 int count = 0;
3434 int tso;
3435 unsigned int f;
3436 len -= skb->data_len;
3437
3438 if (test_bit(__E1000_DOWN, &adapter->state)) {
3439 dev_kfree_skb_any(skb);
3440 return NETDEV_TX_OK;
3441 }
3442
3443 if (skb->len <= 0) {
3444 dev_kfree_skb_any(skb);
3445 return NETDEV_TX_OK;
3446 }
3447
3448 mss = skb_shinfo(skb)->gso_size;
3449 /* The controller does a simple calculation to
3450 * make sure there is enough room in the FIFO before
3451 * initiating the DMA for each buffer. The calc is:
3452 * 4 = ceil(buffer len/mss). To make sure we don't
3453 * overrun the FIFO, adjust the max buffer len if mss
3454 * drops. */
3455 if (mss) {
3456 u8 hdr_len;
3457 max_per_txd = min(mss << 2, max_per_txd);
3458 max_txd_pwr = fls(max_per_txd) - 1;
3459
3460 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3461 * points to just header, pull a few bytes of payload from
3462 * frags into skb->data */
3463 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3464 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {
3465 unsigned int pull_size;
3466
3467 pull_size = min((unsigned int)4, skb->data_len);
3468 if (!__pskb_pull_tail(skb, pull_size)) {
3469 ndev_err(netdev,
3470 "__pskb_pull_tail failed.\n");
3471 dev_kfree_skb_any(skb);
3472 return NETDEV_TX_OK;
3473 }
3474 len = skb->len - skb->data_len;
3475 }
3476 }
3477
3478 /* reserve a descriptor for the offload context */
3479 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3480 count++;
3481 count++;
3482
3483 count += TXD_USE_COUNT(len, max_txd_pwr);
3484
3485 nr_frags = skb_shinfo(skb)->nr_frags;
3486 for (f = 0; f < nr_frags; f++)
3487 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3488 max_txd_pwr);
3489
3490 if (adapter->hw.mac.tx_pkt_filtering)
3491 e1000_transfer_dhcp_info(adapter, skb);
3492
3493 if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags))
3494 /* Collision - tell upper layer to requeue */
3495 return NETDEV_TX_LOCKED;
3496
3497 /* need: count + 2 desc gap to keep tail from touching
3498 * head, otherwise try next time */
3499 if (e1000_maybe_stop_tx(netdev, count + 2)) {
3500 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3501 return NETDEV_TX_BUSY;
3502 }
3503
3504 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
3505 tx_flags |= E1000_TX_FLAGS_VLAN;
3506 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3507 }
3508
3509 first = tx_ring->next_to_use;
3510
3511 tso = e1000_tso(adapter, skb);
3512 if (tso < 0) {
3513 dev_kfree_skb_any(skb);
3514 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3515 return NETDEV_TX_OK;
3516 }
3517
3518 if (tso)
3519 tx_flags |= E1000_TX_FLAGS_TSO;
3520 else if (e1000_tx_csum(adapter, skb))
3521 tx_flags |= E1000_TX_FLAGS_CSUM;
3522
3523 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3524 * 82571 hardware supports TSO capabilities for IPv6 as well...
3525 * no longer assume, we must. */
3526 if (skb->protocol == htons(ETH_P_IP))
3527 tx_flags |= E1000_TX_FLAGS_IPV4;
3528
3529 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
3530 if (count < 0) {
3531 /* handle pci_map_single() error in e1000_tx_map */
3532 dev_kfree_skb_any(skb);
3533 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3534 return NETDEV_TX_BUSY;
3535 }
3536
3537 e1000_tx_queue(adapter, tx_flags, count);
3538
3539 netdev->trans_start = jiffies;
3540
3541 /* Make sure there is space in the ring for the next send. */
3542 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
3543
3544 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3545 return NETDEV_TX_OK;
3546}
3547
3548/**
3549 * e1000_tx_timeout - Respond to a Tx Hang
3550 * @netdev: network interface device structure
3551 **/
3552static void e1000_tx_timeout(struct net_device *netdev)
3553{
3554 struct e1000_adapter *adapter = netdev_priv(netdev);
3555
3556 /* Do the reset outside of interrupt context */
3557 adapter->tx_timeout_count++;
3558 schedule_work(&adapter->reset_task);
3559}
3560
3561static void e1000_reset_task(struct work_struct *work)
3562{
3563 struct e1000_adapter *adapter;
3564 adapter = container_of(work, struct e1000_adapter, reset_task);
3565
3566 e1000e_reinit_locked(adapter);
3567}
3568
3569/**
3570 * e1000_get_stats - Get System Network Statistics
3571 * @netdev: network interface device structure
3572 *
3573 * Returns the address of the device statistics structure.
3574 * The statistics are actually updated from the timer callback.
3575 **/
3576static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
3577{
3578 struct e1000_adapter *adapter = netdev_priv(netdev);
3579
3580 /* only return the current stats */
3581 return &adapter->net_stats;
3582}
3583
3584/**
3585 * e1000_change_mtu - Change the Maximum Transfer Unit
3586 * @netdev: network interface device structure
3587 * @new_mtu: new value for maximum frame size
3588 *
3589 * Returns 0 on success, negative on failure
3590 **/
3591static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
3592{
3593 struct e1000_adapter *adapter = netdev_priv(netdev);
3594 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3595
3596 if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
3597 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3598 ndev_err(netdev, "Invalid MTU setting\n");
3599 return -EINVAL;
3600 }
3601
3602 /* Jumbo frame size limits */
3603 if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) {
3604 if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
3605 ndev_err(netdev, "Jumbo Frames not supported.\n");
3606 return -EINVAL;
3607 }
3608 if (adapter->hw.phy.type == e1000_phy_ife) {
3609 ndev_err(netdev, "Jumbo Frames not supported.\n");
3610 return -EINVAL;
3611 }
3612 }
3613
3614#define MAX_STD_JUMBO_FRAME_SIZE 9234
3615 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3616 ndev_err(netdev, "MTU > 9216 not supported.\n");
3617 return -EINVAL;
3618 }
3619
3620 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3621 msleep(1);
3622 /* e1000e_down has a dependency on max_frame_size */
3623 adapter->hw.mac.max_frame_size = max_frame;
3624 if (netif_running(netdev))
3625 e1000e_down(adapter);
3626
3627 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3628 * means we reserve 2 more, this pushes us to allocate from the next
3629 * larger slab size.
3630 * i.e. RXBUFFER_2048 --> size-4096 slab
3631 * however with the new *_jumbo* routines, jumbo receives will use
3632 * fragmented skbs */
3633
3634 if (max_frame <= 256)
3635 adapter->rx_buffer_len = 256;
3636 else if (max_frame <= 512)
3637 adapter->rx_buffer_len = 512;
3638 else if (max_frame <= 1024)
3639 adapter->rx_buffer_len = 1024;
3640 else if (max_frame <= 2048)
3641 adapter->rx_buffer_len = 2048;
3642 else
3643 adapter->rx_buffer_len = 4096;
3644
3645 /* adjust allocation if LPE protects us, and we aren't using SBP */
3646 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
3647 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
3648 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
3649 + ETH_FCS_LEN ;
3650
3651 ndev_info(netdev, "changing MTU from %d to %d\n",
3652 netdev->mtu, new_mtu);
3653 netdev->mtu = new_mtu;
3654
3655 if (netif_running(netdev))
3656 e1000e_up(adapter);
3657 else
3658 e1000e_reset(adapter);
3659
3660 clear_bit(__E1000_RESETTING, &adapter->state);
3661
3662 return 0;
3663}
3664
3665static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
3666 int cmd)
3667{
3668 struct e1000_adapter *adapter = netdev_priv(netdev);
3669 struct mii_ioctl_data *data = if_mii(ifr);
3670 unsigned long irq_flags;
3671
3672 if (adapter->hw.media_type != e1000_media_type_copper)
3673 return -EOPNOTSUPP;
3674
3675 switch (cmd) {
3676 case SIOCGMIIPHY:
3677 data->phy_id = adapter->hw.phy.addr;
3678 break;
3679 case SIOCGMIIREG:
3680 if (!capable(CAP_NET_ADMIN))
3681 return -EPERM;
3682 spin_lock_irqsave(&adapter->stats_lock, irq_flags);
3683 if (e1e_rphy(&adapter->hw, data->reg_num & 0x1F,
3684 &data->val_out)) {
3685 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
3686 return -EIO;
3687 }
3688 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
3689 break;
3690 case SIOCSMIIREG:
3691 default:
3692 return -EOPNOTSUPP;
3693 }
3694 return 0;
3695}
3696
3697static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
3698{
3699 switch (cmd) {
3700 case SIOCGMIIPHY:
3701 case SIOCGMIIREG:
3702 case SIOCSMIIREG:
3703 return e1000_mii_ioctl(netdev, ifr, cmd);
3704 default:
3705 return -EOPNOTSUPP;
3706 }
3707}
3708
3709static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
3710{
3711 struct net_device *netdev = pci_get_drvdata(pdev);
3712 struct e1000_adapter *adapter = netdev_priv(netdev);
3713 struct e1000_hw *hw = &adapter->hw;
3714 u32 ctrl, ctrl_ext, rctl, status;
3715 u32 wufc = adapter->wol;
3716 int retval = 0;
3717
3718 netif_device_detach(netdev);
3719
3720 if (netif_running(netdev)) {
3721 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3722 e1000e_down(adapter);
3723 e1000_free_irq(adapter);
3724 }
3725
3726 retval = pci_save_state(pdev);
3727 if (retval)
3728 return retval;
3729
3730 status = er32(STATUS);
3731 if (status & E1000_STATUS_LU)
3732 wufc &= ~E1000_WUFC_LNKC;
3733
3734 if (wufc) {
3735 e1000_setup_rctl(adapter);
3736 e1000_set_multi(netdev);
3737
3738 /* turn on all-multi mode if wake on multicast is enabled */
3739 if (wufc & E1000_WUFC_MC) {
3740 rctl = er32(RCTL);
3741 rctl |= E1000_RCTL_MPE;
3742 ew32(RCTL, rctl);
3743 }
3744
3745 ctrl = er32(CTRL);
3746 /* advertise wake from D3Cold */
3747 #define E1000_CTRL_ADVD3WUC 0x00100000
3748 /* phy power management enable */
3749 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3750 ctrl |= E1000_CTRL_ADVD3WUC |
3751 E1000_CTRL_EN_PHY_PWR_MGMT;
3752 ew32(CTRL, ctrl);
3753
3754 if (adapter->hw.media_type == e1000_media_type_fiber ||
3755 adapter->hw.media_type == e1000_media_type_internal_serdes) {
3756 /* keep the laser running in D3 */
3757 ctrl_ext = er32(CTRL_EXT);
3758 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
3759 ew32(CTRL_EXT, ctrl_ext);
3760 }
3761
3762 /* Allow time for pending master requests to run */
3763 e1000e_disable_pcie_master(&adapter->hw);
3764
3765 ew32(WUC, E1000_WUC_PME_EN);
3766 ew32(WUFC, wufc);
3767 pci_enable_wake(pdev, PCI_D3hot, 1);
3768 pci_enable_wake(pdev, PCI_D3cold, 1);
3769 } else {
3770 ew32(WUC, 0);
3771 ew32(WUFC, 0);
3772 pci_enable_wake(pdev, PCI_D3hot, 0);
3773 pci_enable_wake(pdev, PCI_D3cold, 0);
3774 }
3775
3776 e1000_release_manageability(adapter);
3777
3778 /* make sure adapter isn't asleep if manageability is enabled */
3779 if (adapter->flags & FLAG_MNG_PT_ENABLED) {
3780 pci_enable_wake(pdev, PCI_D3hot, 1);
3781 pci_enable_wake(pdev, PCI_D3cold, 1);
3782 }
3783
3784 if (adapter->hw.phy.type == e1000_phy_igp_3)
3785 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
3786
3787 /* Release control of h/w to f/w. If f/w is AMT enabled, this
3788 * would have already happened in close and is redundant. */
3789 e1000_release_hw_control(adapter);
3790
3791 pci_disable_device(pdev);
3792
3793 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3794
3795 return 0;
3796}
3797
3798#ifdef CONFIG_PM
3799static int e1000_resume(struct pci_dev *pdev)
3800{
3801 struct net_device *netdev = pci_get_drvdata(pdev);
3802 struct e1000_adapter *adapter = netdev_priv(netdev);
3803 struct e1000_hw *hw = &adapter->hw;
3804 u32 err;
3805
3806 pci_set_power_state(pdev, PCI_D0);
3807 pci_restore_state(pdev);
3808 err = pci_enable_device(pdev);
3809 if (err) {
3810 dev_err(&pdev->dev,
3811 "Cannot enable PCI device from suspend\n");
3812 return err;
3813 }
3814
3815 pci_set_master(pdev);
3816
3817 pci_enable_wake(pdev, PCI_D3hot, 0);
3818 pci_enable_wake(pdev, PCI_D3cold, 0);
3819
3820 if (netif_running(netdev)) {
3821 err = e1000_request_irq(adapter);
3822 if (err)
3823 return err;
3824 }
3825
3826 e1000e_power_up_phy(adapter);
3827 e1000e_reset(adapter);
3828 ew32(WUS, ~0);
3829
3830 e1000_init_manageability(adapter);
3831
3832 if (netif_running(netdev))
3833 e1000e_up(adapter);
3834
3835 netif_device_attach(netdev);
3836
3837 /* If the controller has AMT, do not set DRV_LOAD until the interface
3838 * is up. For all other cases, let the f/w know that the h/w is now
3839 * under the control of the driver. */
3840 if (!(adapter->flags & FLAG_HAS_AMT) || !e1000e_check_mng_mode(&adapter->hw))
3841 e1000_get_hw_control(adapter);
3842
3843 return 0;
3844}
3845#endif
3846
3847static void e1000_shutdown(struct pci_dev *pdev)
3848{
3849 e1000_suspend(pdev, PMSG_SUSPEND);
3850}
3851
3852#ifdef CONFIG_NET_POLL_CONTROLLER
3853/*
3854 * Polling 'interrupt' - used by things like netconsole to send skbs
3855 * without having to re-enable interrupts. It's not called while
3856 * the interrupt routine is executing.
3857 */
3858static void e1000_netpoll(struct net_device *netdev)
3859{
3860 struct e1000_adapter *adapter = netdev_priv(netdev);
3861
3862 disable_irq(adapter->pdev->irq);
3863 e1000_intr(adapter->pdev->irq, netdev);
3864
3865 e1000_clean_tx_irq(adapter);
3866
3867 enable_irq(adapter->pdev->irq);
3868}
3869#endif
3870
3871/**
3872 * e1000_io_error_detected - called when PCI error is detected
3873 * @pdev: Pointer to PCI device
3874 * @state: The current pci connection state
3875 *
3876 * This function is called after a PCI bus error affecting
3877 * this device has been detected.
3878 */
3879static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
3880 pci_channel_state_t state)
3881{
3882 struct net_device *netdev = pci_get_drvdata(pdev);
3883 struct e1000_adapter *adapter = netdev_priv(netdev);
3884
3885 netif_device_detach(netdev);
3886
3887 if (netif_running(netdev))
3888 e1000e_down(adapter);
3889 pci_disable_device(pdev);
3890
3891 /* Request a slot slot reset. */
3892 return PCI_ERS_RESULT_NEED_RESET;
3893}
3894
3895/**
3896 * e1000_io_slot_reset - called after the pci bus has been reset.
3897 * @pdev: Pointer to PCI device
3898 *
3899 * Restart the card from scratch, as if from a cold-boot. Implementation
3900 * resembles the first-half of the e1000_resume routine.
3901 */
3902static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
3903{
3904 struct net_device *netdev = pci_get_drvdata(pdev);
3905 struct e1000_adapter *adapter = netdev_priv(netdev);
3906 struct e1000_hw *hw = &adapter->hw;
3907
3908 if (pci_enable_device(pdev)) {
3909 dev_err(&pdev->dev,
3910 "Cannot re-enable PCI device after reset.\n");
3911 return PCI_ERS_RESULT_DISCONNECT;
3912 }
3913 pci_set_master(pdev);
3914
3915 pci_enable_wake(pdev, PCI_D3hot, 0);
3916 pci_enable_wake(pdev, PCI_D3cold, 0);
3917
3918 e1000e_reset(adapter);
3919 ew32(WUS, ~0);
3920
3921 return PCI_ERS_RESULT_RECOVERED;
3922}
3923
3924/**
3925 * e1000_io_resume - called when traffic can start flowing again.
3926 * @pdev: Pointer to PCI device
3927 *
3928 * This callback is called when the error recovery driver tells us that
3929 * its OK to resume normal operation. Implementation resembles the
3930 * second-half of the e1000_resume routine.
3931 */
3932static void e1000_io_resume(struct pci_dev *pdev)
3933{
3934 struct net_device *netdev = pci_get_drvdata(pdev);
3935 struct e1000_adapter *adapter = netdev_priv(netdev);
3936
3937 e1000_init_manageability(adapter);
3938
3939 if (netif_running(netdev)) {
3940 if (e1000e_up(adapter)) {
3941 dev_err(&pdev->dev,
3942 "can't bring device back up after reset\n");
3943 return;
3944 }
3945 }
3946
3947 netif_device_attach(netdev);
3948
3949 /* If the controller has AMT, do not set DRV_LOAD until the interface
3950 * is up. For all other cases, let the f/w know that the h/w is now
3951 * under the control of the driver. */
3952 if (!(adapter->flags & FLAG_HAS_AMT) ||
3953 !e1000e_check_mng_mode(&adapter->hw))
3954 e1000_get_hw_control(adapter);
3955
3956}
3957
3958static void e1000_print_device_info(struct e1000_adapter *adapter)
3959{
3960 struct e1000_hw *hw = &adapter->hw;
3961 struct net_device *netdev = adapter->netdev;
3962 u32 part_num;
3963
3964 /* print bus type/speed/width info */
3965 ndev_info(netdev, "(PCI Express:2.5GB/s:%s) "
3966 "%02x:%02x:%02x:%02x:%02x:%02x\n",
3967 /* bus width */
3968 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
3969 "Width x1"),
3970 /* MAC address */
3971 netdev->dev_addr[0], netdev->dev_addr[1],
3972 netdev->dev_addr[2], netdev->dev_addr[3],
3973 netdev->dev_addr[4], netdev->dev_addr[5]);
3974 ndev_info(netdev, "Intel(R) PRO/%s Network Connection\n",
3975 (hw->phy.type == e1000_phy_ife)
3976 ? "10/100" : "1000");
3977 e1000e_read_part_num(hw, &part_num);
3978 ndev_info(netdev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
3979 hw->mac.type, hw->phy.type,
3980 (part_num >> 8), (part_num & 0xff));
3981}
3982
3983/**
3984 * e1000_probe - Device Initialization Routine
3985 * @pdev: PCI device information struct
3986 * @ent: entry in e1000_pci_tbl
3987 *
3988 * Returns 0 on success, negative on failure
3989 *
3990 * e1000_probe initializes an adapter identified by a pci_dev structure.
3991 * The OS initialization, configuring of the adapter private structure,
3992 * and a hardware reset occur.
3993 **/
3994static int __devinit e1000_probe(struct pci_dev *pdev,
3995 const struct pci_device_id *ent)
3996{
3997 struct net_device *netdev;
3998 struct e1000_adapter *adapter;
3999 struct e1000_hw *hw;
4000 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
4001 unsigned long mmio_start, mmio_len;
4002 unsigned long flash_start, flash_len;
4003
4004 static int cards_found;
4005 int i, err, pci_using_dac;
4006 u16 eeprom_data = 0;
4007 u16 eeprom_apme_mask = E1000_EEPROM_APME;
4008
4009 err = pci_enable_device(pdev);
4010 if (err)
4011 return err;
4012
4013 pci_using_dac = 0;
4014 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4015 if (!err) {
4016 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4017 if (!err)
4018 pci_using_dac = 1;
4019 } else {
4020 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4021 if (err) {
4022 err = pci_set_consistent_dma_mask(pdev,
4023 DMA_32BIT_MASK);
4024 if (err) {
4025 dev_err(&pdev->dev, "No usable DMA "
4026 "configuration, aborting\n");
4027 goto err_dma;
4028 }
4029 }
4030 }
4031
4032 err = pci_request_regions(pdev, e1000e_driver_name);
4033 if (err)
4034 goto err_pci_reg;
4035
4036 pci_set_master(pdev);
4037
4038 err = -ENOMEM;
4039 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
4040 if (!netdev)
4041 goto err_alloc_etherdev;
4042
4043 SET_MODULE_OWNER(netdev);
4044 SET_NETDEV_DEV(netdev, &pdev->dev);
4045
4046 pci_set_drvdata(pdev, netdev);
4047 adapter = netdev_priv(netdev);
4048 hw = &adapter->hw;
4049 adapter->netdev = netdev;
4050 adapter->pdev = pdev;
4051 adapter->ei = ei;
4052 adapter->pba = ei->pba;
4053 adapter->flags = ei->flags;
4054 adapter->hw.adapter = adapter;
4055 adapter->hw.mac.type = ei->mac;
4056 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
4057
4058 mmio_start = pci_resource_start(pdev, 0);
4059 mmio_len = pci_resource_len(pdev, 0);
4060
4061 err = -EIO;
4062 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
4063 if (!adapter->hw.hw_addr)
4064 goto err_ioremap;
4065
4066 if ((adapter->flags & FLAG_HAS_FLASH) &&
4067 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
4068 flash_start = pci_resource_start(pdev, 1);
4069 flash_len = pci_resource_len(pdev, 1);
4070 adapter->hw.flash_address = ioremap(flash_start, flash_len);
4071 if (!adapter->hw.flash_address)
4072 goto err_flashmap;
4073 }
4074
4075 /* construct the net_device struct */
4076 netdev->open = &e1000_open;
4077 netdev->stop = &e1000_close;
4078 netdev->hard_start_xmit = &e1000_xmit_frame;
4079 netdev->get_stats = &e1000_get_stats;
4080 netdev->set_multicast_list = &e1000_set_multi;
4081 netdev->set_mac_address = &e1000_set_mac;
4082 netdev->change_mtu = &e1000_change_mtu;
4083 netdev->do_ioctl = &e1000_ioctl;
4084 e1000e_set_ethtool_ops(netdev);
4085 netdev->tx_timeout = &e1000_tx_timeout;
4086 netdev->watchdog_timeo = 5 * HZ;
4087 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
4088 netdev->vlan_rx_register = e1000_vlan_rx_register;
4089 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
4090 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
4091#ifdef CONFIG_NET_POLL_CONTROLLER
4092 netdev->poll_controller = e1000_netpoll;
4093#endif
4094 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
4095
4096 netdev->mem_start = mmio_start;
4097 netdev->mem_end = mmio_start + mmio_len;
4098
4099 adapter->bd_number = cards_found++;
4100
4101 /* setup adapter struct */
4102 err = e1000_sw_init(adapter);
4103 if (err)
4104 goto err_sw_init;
4105
4106 err = -EIO;
4107
4108 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
4109 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
4110 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
4111
4112 err = ei->get_invariants(adapter);
4113 if (err)
4114 goto err_hw_init;
4115
4116 hw->mac.ops.get_bus_info(&adapter->hw);
4117
4118 adapter->hw.phy.wait_for_link = 0;
4119
4120 /* Copper options */
4121 if (adapter->hw.media_type == e1000_media_type_copper) {
4122 adapter->hw.phy.mdix = AUTO_ALL_MODES;
4123 adapter->hw.phy.disable_polarity_correction = 0;
4124 adapter->hw.phy.ms_type = e1000_ms_hw_default;
4125 }
4126
4127 if (e1000_check_reset_block(&adapter->hw))
4128 ndev_info(netdev,
4129 "PHY reset is blocked due to SOL/IDER session.\n");
4130
4131 netdev->features = NETIF_F_SG |
4132 NETIF_F_HW_CSUM |
4133 NETIF_F_HW_VLAN_TX |
4134 NETIF_F_HW_VLAN_RX;
4135
4136 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
4137 netdev->features |= NETIF_F_HW_VLAN_FILTER;
4138
4139 netdev->features |= NETIF_F_TSO;
4140 netdev->features |= NETIF_F_TSO6;
4141
4142 if (pci_using_dac)
4143 netdev->features |= NETIF_F_HIGHDMA;
4144
4145 /* We should not be using LLTX anymore, but we are still TX faster with
4146 * it. */
4147 netdev->features |= NETIF_F_LLTX;
4148
4149 if (e1000e_enable_mng_pass_thru(&adapter->hw))
4150 adapter->flags |= FLAG_MNG_PT_ENABLED;
4151
4152 /* before reading the NVM, reset the controller to
4153 * put the device in a known good starting state */
4154 adapter->hw.mac.ops.reset_hw(&adapter->hw);
4155
4156 /*
4157 * systems with ASPM and others may see the checksum fail on the first
4158 * attempt. Let's give it a few tries
4159 */
4160 for (i = 0;; i++) {
4161 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
4162 break;
4163 if (i == 2) {
4164 ndev_err(netdev, "The NVM Checksum Is Not Valid\n");
4165 err = -EIO;
4166 goto err_eeprom;
4167 }
4168 }
4169
4170 /* copy the MAC address out of the NVM */
4171 if (e1000e_read_mac_addr(&adapter->hw))
4172 ndev_err(netdev, "NVM Read Error while reading MAC address\n");
4173
4174 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
4175 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
4176
4177 if (!is_valid_ether_addr(netdev->perm_addr)) {
4178 ndev_err(netdev, "Invalid MAC Address: "
4179 "%02x:%02x:%02x:%02x:%02x:%02x\n",
4180 netdev->perm_addr[0], netdev->perm_addr[1],
4181 netdev->perm_addr[2], netdev->perm_addr[3],
4182 netdev->perm_addr[4], netdev->perm_addr[5]);
4183 err = -EIO;
4184 goto err_eeprom;
4185 }
4186
4187 init_timer(&adapter->watchdog_timer);
4188 adapter->watchdog_timer.function = &e1000_watchdog;
4189 adapter->watchdog_timer.data = (unsigned long) adapter;
4190
4191 init_timer(&adapter->phy_info_timer);
4192 adapter->phy_info_timer.function = &e1000_update_phy_info;
4193 adapter->phy_info_timer.data = (unsigned long) adapter;
4194
4195 INIT_WORK(&adapter->reset_task, e1000_reset_task);
4196 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
4197
4198 e1000e_check_options(adapter);
4199
4200 /* Initialize link parameters. User can change them with ethtool */
4201 adapter->hw.mac.autoneg = 1;
4202 adapter->hw.mac.original_fc = e1000_fc_default;
4203 adapter->hw.mac.fc = e1000_fc_default;
4204 adapter->hw.phy.autoneg_advertised = 0x2f;
4205
4206 /* ring size defaults */
4207 adapter->rx_ring->count = 256;
4208 adapter->tx_ring->count = 256;
4209
4210 /*
4211 * Initial Wake on LAN setting - If APM wake is enabled in
4212 * the EEPROM, enable the ACPI Magic Packet filter
4213 */
4214 if (adapter->flags & FLAG_APME_IN_WUC) {
4215 /* APME bit in EEPROM is mapped to WUC.APME */
4216 eeprom_data = er32(WUC);
4217 eeprom_apme_mask = E1000_WUC_APME;
4218 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
4219 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
4220 (adapter->hw.bus.func == 1))
4221 e1000_read_nvm(&adapter->hw,
4222 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
4223 else
4224 e1000_read_nvm(&adapter->hw,
4225 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
4226 }
4227
4228 /* fetch WoL from EEPROM */
4229 if (eeprom_data & eeprom_apme_mask)
4230 adapter->eeprom_wol |= E1000_WUFC_MAG;
4231
4232 /*
4233 * now that we have the eeprom settings, apply the special cases
4234 * where the eeprom may be wrong or the board simply won't support
4235 * wake on lan on a particular port
4236 */
4237 if (!(adapter->flags & FLAG_HAS_WOL))
4238 adapter->eeprom_wol = 0;
4239
4240 /* initialize the wol settings based on the eeprom settings */
4241 adapter->wol = adapter->eeprom_wol;
4242
4243 /* reset the hardware with the new settings */
4244 e1000e_reset(adapter);
4245
4246 /* If the controller has AMT, do not set DRV_LOAD until the interface
4247 * is up. For all other cases, let the f/w know that the h/w is now
4248 * under the control of the driver. */
4249 if (!(adapter->flags & FLAG_HAS_AMT) ||
4250 !e1000e_check_mng_mode(&adapter->hw))
4251 e1000_get_hw_control(adapter);
4252
4253 /* tell the stack to leave us alone until e1000_open() is called */
4254 netif_carrier_off(netdev);
4255 netif_stop_queue(netdev);
4256
4257 strcpy(netdev->name, "eth%d");
4258 err = register_netdev(netdev);
4259 if (err)
4260 goto err_register;
4261
4262 e1000_print_device_info(adapter);
4263
4264 return 0;
4265
4266err_register:
4267err_hw_init:
4268 e1000_release_hw_control(adapter);
4269err_eeprom:
4270 if (!e1000_check_reset_block(&adapter->hw))
4271 e1000_phy_hw_reset(&adapter->hw);
4272
4273 if (adapter->hw.flash_address)
4274 iounmap(adapter->hw.flash_address);
4275
4276err_flashmap:
4277 kfree(adapter->tx_ring);
4278 kfree(adapter->rx_ring);
4279err_sw_init:
4280 iounmap(adapter->hw.hw_addr);
4281err_ioremap:
4282 free_netdev(netdev);
4283err_alloc_etherdev:
4284 pci_release_regions(pdev);
4285err_pci_reg:
4286err_dma:
4287 pci_disable_device(pdev);
4288 return err;
4289}
4290
4291/**
4292 * e1000_remove - Device Removal Routine
4293 * @pdev: PCI device information struct
4294 *
4295 * e1000_remove is called by the PCI subsystem to alert the driver
4296 * that it should release a PCI device. The could be caused by a
4297 * Hot-Plug event, or because the driver is going to be removed from
4298 * memory.
4299 **/
4300static void __devexit e1000_remove(struct pci_dev *pdev)
4301{
4302 struct net_device *netdev = pci_get_drvdata(pdev);
4303 struct e1000_adapter *adapter = netdev_priv(netdev);
4304
4305 /* flush_scheduled work may reschedule our watchdog task, so
4306 * explicitly disable watchdog tasks from being rescheduled */
4307 set_bit(__E1000_DOWN, &adapter->state);
4308 del_timer_sync(&adapter->watchdog_timer);
4309 del_timer_sync(&adapter->phy_info_timer);
4310
4311 flush_scheduled_work();
4312
4313 e1000_release_manageability(adapter);
4314
4315 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4316 * would have already happened in close and is redundant. */
4317 e1000_release_hw_control(adapter);
4318
4319 unregister_netdev(netdev);
4320
4321 if (!e1000_check_reset_block(&adapter->hw))
4322 e1000_phy_hw_reset(&adapter->hw);
4323
4324 kfree(adapter->tx_ring);
4325 kfree(adapter->rx_ring);
4326
4327 iounmap(adapter->hw.hw_addr);
4328 if (adapter->hw.flash_address)
4329 iounmap(adapter->hw.flash_address);
4330 pci_release_regions(pdev);
4331
4332 free_netdev(netdev);
4333
4334 pci_disable_device(pdev);
4335}
4336
4337/* PCI Error Recovery (ERS) */
4338static struct pci_error_handlers e1000_err_handler = {
4339 .error_detected = e1000_io_error_detected,
4340 .slot_reset = e1000_io_slot_reset,
4341 .resume = e1000_io_resume,
4342};
4343
4344static struct pci_device_id e1000_pci_tbl[] = {
4345 /*
4346 * Support for 82571/2/3, es2lan and ich8 will be phased in
4347 * stepwise.
4348
4349 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
4350 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
4351 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
4352 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
4353 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
4354 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
4355 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
4356 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
4357 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
4358 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
4359 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
4360 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
4361 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
4362 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
4363 board_80003es2lan },
4364 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
4365 board_80003es2lan },
4366 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
4367 board_80003es2lan },
4368 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
4369 board_80003es2lan },
4370 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
4371 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
4372 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
4373 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
4374 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
4375 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
4376 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
4377 */
4378
4379 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
4380 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
4381 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
4382 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
4383 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
4384
4385 { } /* terminate list */
4386};
4387MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
4388
4389/* PCI Device API Driver */
4390static struct pci_driver e1000_driver = {
4391 .name = e1000e_driver_name,
4392 .id_table = e1000_pci_tbl,
4393 .probe = e1000_probe,
4394 .remove = __devexit_p(e1000_remove),
4395#ifdef CONFIG_PM
4396 /* Power Managment Hooks */
4397 .suspend = e1000_suspend,
4398 .resume = e1000_resume,
4399#endif
4400 .shutdown = e1000_shutdown,
4401 .err_handler = &e1000_err_handler
4402};
4403
4404/**
4405 * e1000_init_module - Driver Registration Routine
4406 *
4407 * e1000_init_module is the first routine called when the driver is
4408 * loaded. All it does is register with the PCI subsystem.
4409 **/
4410static int __init e1000_init_module(void)
4411{
4412 int ret;
4413 printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n",
4414 e1000e_driver_name, e1000e_driver_version);
4415 printk(KERN_INFO "%s: Copyright (c) 1999-2007 Intel Corporation.\n",
4416 e1000e_driver_name);
4417 ret = pci_register_driver(&e1000_driver);
4418
4419 return ret;
4420}
4421module_init(e1000_init_module);
4422
4423/**
4424 * e1000_exit_module - Driver Exit Cleanup Routine
4425 *
4426 * e1000_exit_module is called just before the driver is removed
4427 * from memory.
4428 **/
4429static void __exit e1000_exit_module(void)
4430{
4431 pci_unregister_driver(&e1000_driver);
4432}
4433module_exit(e1000_exit_module);
4434
4435
4436MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
4437MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
4438MODULE_LICENSE("GPL");
4439MODULE_VERSION(DRV_VERSION);
4440
4441/* e1000_main.c */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-08 02:00:56 -0500