1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2008 Intel Corporation.
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.
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
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.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
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
27 *******************************************************************************/
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 #include <linux/pm_qos_params.h>
50 #define DRV_VERSION "0.3.3.4-k2"
51 char e1000e_driver_name
[] = "e1000e";
52 const char e1000e_driver_version
[] = DRV_VERSION
;
54 static const struct e1000_info
*e1000_info_tbl
[] = {
55 [board_82571
] = &e1000_82571_info
,
56 [board_82572
] = &e1000_82572_info
,
57 [board_82573
] = &e1000_82573_info
,
58 [board_82574
] = &e1000_82574_info
,
59 [board_80003es2lan
] = &e1000_es2_info
,
60 [board_ich8lan
] = &e1000_ich8_info
,
61 [board_ich9lan
] = &e1000_ich9_info
,
62 [board_ich10lan
] = &e1000_ich10_info
,
67 * e1000_get_hw_dev_name - return device name string
68 * used by hardware layer to print debugging information
70 char *e1000e_get_hw_dev_name(struct e1000_hw
*hw
)
72 return hw
->adapter
->netdev
->name
;
77 * e1000_desc_unused - calculate if we have unused descriptors
79 static int e1000_desc_unused(struct e1000_ring
*ring
)
81 if (ring
->next_to_clean
> ring
->next_to_use
)
82 return ring
->next_to_clean
- ring
->next_to_use
- 1;
84 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
88 * e1000_receive_skb - helper function to handle Rx indications
89 * @adapter: board private structure
90 * @status: descriptor status field as written by hardware
91 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
92 * @skb: pointer to sk_buff to be indicated to stack
94 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
95 struct net_device
*netdev
,
97 u8 status
, __le16 vlan
)
99 skb
->protocol
= eth_type_trans(skb
, netdev
);
101 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
102 vlan_gro_receive(&adapter
->napi
, adapter
->vlgrp
,
103 le16_to_cpu(vlan
), skb
);
105 napi_gro_receive(&adapter
->napi
, skb
);
109 * e1000_rx_checksum - Receive Checksum Offload for 82543
110 * @adapter: board private structure
111 * @status_err: receive descriptor status and error fields
112 * @csum: receive descriptor csum field
113 * @sk_buff: socket buffer with received data
115 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
116 u32 csum
, struct sk_buff
*skb
)
118 u16 status
= (u16
)status_err
;
119 u8 errors
= (u8
)(status_err
>> 24);
120 skb
->ip_summed
= CHECKSUM_NONE
;
122 /* Ignore Checksum bit is set */
123 if (status
& E1000_RXD_STAT_IXSM
)
125 /* TCP/UDP checksum error bit is set */
126 if (errors
& E1000_RXD_ERR_TCPE
) {
127 /* let the stack verify checksum errors */
128 adapter
->hw_csum_err
++;
132 /* TCP/UDP Checksum has not been calculated */
133 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
136 /* It must be a TCP or UDP packet with a valid checksum */
137 if (status
& E1000_RXD_STAT_TCPCS
) {
138 /* TCP checksum is good */
139 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
142 * IP fragment with UDP payload
143 * Hardware complements the payload checksum, so we undo it
144 * and then put the value in host order for further stack use.
146 __sum16 sum
= (__force __sum16
)htons(csum
);
147 skb
->csum
= csum_unfold(~sum
);
148 skb
->ip_summed
= CHECKSUM_COMPLETE
;
150 adapter
->hw_csum_good
++;
154 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
155 * @adapter: address of board private structure
157 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
160 struct net_device
*netdev
= adapter
->netdev
;
161 struct pci_dev
*pdev
= adapter
->pdev
;
162 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
163 struct e1000_rx_desc
*rx_desc
;
164 struct e1000_buffer
*buffer_info
;
167 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
169 i
= rx_ring
->next_to_use
;
170 buffer_info
= &rx_ring
->buffer_info
[i
];
172 while (cleaned_count
--) {
173 skb
= buffer_info
->skb
;
179 skb
= netdev_alloc_skb(netdev
, bufsz
);
181 /* Better luck next round */
182 adapter
->alloc_rx_buff_failed
++;
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
191 skb_reserve(skb
, NET_IP_ALIGN
);
193 buffer_info
->skb
= skb
;
195 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
196 adapter
->rx_buffer_len
,
198 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
199 dev_err(&pdev
->dev
, "RX DMA map failed\n");
200 adapter
->rx_dma_failed
++;
204 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
205 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
208 if (i
== rx_ring
->count
)
210 buffer_info
= &rx_ring
->buffer_info
[i
];
213 if (rx_ring
->next_to_use
!= i
) {
214 rx_ring
->next_to_use
= i
;
216 i
= (rx_ring
->count
- 1);
219 * Force memory writes to complete before letting h/w
220 * know there are new descriptors to fetch. (Only
221 * applicable for weak-ordered memory model archs,
225 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
230 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
231 * @adapter: address of board private structure
233 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
236 struct net_device
*netdev
= adapter
->netdev
;
237 struct pci_dev
*pdev
= adapter
->pdev
;
238 union e1000_rx_desc_packet_split
*rx_desc
;
239 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
240 struct e1000_buffer
*buffer_info
;
241 struct e1000_ps_page
*ps_page
;
245 i
= rx_ring
->next_to_use
;
246 buffer_info
= &rx_ring
->buffer_info
[i
];
248 while (cleaned_count
--) {
249 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
251 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
252 ps_page
= &buffer_info
->ps_pages
[j
];
253 if (j
>= adapter
->rx_ps_pages
) {
254 /* all unused desc entries get hw null ptr */
255 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
258 if (!ps_page
->page
) {
259 ps_page
->page
= alloc_page(GFP_ATOMIC
);
260 if (!ps_page
->page
) {
261 adapter
->alloc_rx_buff_failed
++;
264 ps_page
->dma
= pci_map_page(pdev
,
268 if (pci_dma_mapping_error(pdev
, ps_page
->dma
)) {
269 dev_err(&adapter
->pdev
->dev
,
270 "RX DMA page map failed\n");
271 adapter
->rx_dma_failed
++;
276 * Refresh the desc even if buffer_addrs
277 * didn't change because each write-back
280 rx_desc
->read
.buffer_addr
[j
+1] =
281 cpu_to_le64(ps_page
->dma
);
284 skb
= netdev_alloc_skb(netdev
,
285 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
288 adapter
->alloc_rx_buff_failed
++;
293 * Make buffer alignment 2 beyond a 16 byte boundary
294 * this will result in a 16 byte aligned IP header after
295 * the 14 byte MAC header is removed
297 skb_reserve(skb
, NET_IP_ALIGN
);
299 buffer_info
->skb
= skb
;
300 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
301 adapter
->rx_ps_bsize0
,
303 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
304 dev_err(&pdev
->dev
, "RX DMA map failed\n");
305 adapter
->rx_dma_failed
++;
307 dev_kfree_skb_any(skb
);
308 buffer_info
->skb
= NULL
;
312 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
315 if (i
== rx_ring
->count
)
317 buffer_info
= &rx_ring
->buffer_info
[i
];
321 if (rx_ring
->next_to_use
!= i
) {
322 rx_ring
->next_to_use
= i
;
325 i
= (rx_ring
->count
- 1);
328 * Force memory writes to complete before letting h/w
329 * know there are new descriptors to fetch. (Only
330 * applicable for weak-ordered memory model archs,
335 * Hardware increments by 16 bytes, but packet split
336 * descriptors are 32 bytes...so we increment tail
339 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
344 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
345 * @adapter: address of board private structure
346 * @cleaned_count: number of buffers to allocate this pass
349 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
352 struct net_device
*netdev
= adapter
->netdev
;
353 struct pci_dev
*pdev
= adapter
->pdev
;
354 struct e1000_rx_desc
*rx_desc
;
355 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
356 struct e1000_buffer
*buffer_info
;
359 unsigned int bufsz
= 256 -
360 16 /* for skb_reserve */ -
363 i
= rx_ring
->next_to_use
;
364 buffer_info
= &rx_ring
->buffer_info
[i
];
366 while (cleaned_count
--) {
367 skb
= buffer_info
->skb
;
373 skb
= netdev_alloc_skb(netdev
, bufsz
);
374 if (unlikely(!skb
)) {
375 /* Better luck next round */
376 adapter
->alloc_rx_buff_failed
++;
380 /* Make buffer alignment 2 beyond a 16 byte boundary
381 * this will result in a 16 byte aligned IP header after
382 * the 14 byte MAC header is removed
384 skb_reserve(skb
, NET_IP_ALIGN
);
386 buffer_info
->skb
= skb
;
388 /* allocate a new page if necessary */
389 if (!buffer_info
->page
) {
390 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
391 if (unlikely(!buffer_info
->page
)) {
392 adapter
->alloc_rx_buff_failed
++;
397 if (!buffer_info
->dma
)
398 buffer_info
->dma
= pci_map_page(pdev
,
399 buffer_info
->page
, 0,
403 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
404 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
406 if (unlikely(++i
== rx_ring
->count
))
408 buffer_info
= &rx_ring
->buffer_info
[i
];
411 if (likely(rx_ring
->next_to_use
!= i
)) {
412 rx_ring
->next_to_use
= i
;
413 if (unlikely(i
-- == 0))
414 i
= (rx_ring
->count
- 1);
416 /* Force memory writes to complete before letting h/w
417 * know there are new descriptors to fetch. (Only
418 * applicable for weak-ordered memory model archs,
421 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
426 * e1000_clean_rx_irq - Send received data up the network stack; legacy
427 * @adapter: board private structure
429 * the return value indicates whether actual cleaning was done, there
430 * is no guarantee that everything was cleaned
432 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
433 int *work_done
, int work_to_do
)
435 struct net_device
*netdev
= adapter
->netdev
;
436 struct pci_dev
*pdev
= adapter
->pdev
;
437 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
438 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
439 struct e1000_buffer
*buffer_info
, *next_buffer
;
442 int cleaned_count
= 0;
444 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
446 i
= rx_ring
->next_to_clean
;
447 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
448 buffer_info
= &rx_ring
->buffer_info
[i
];
450 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
454 if (*work_done
>= work_to_do
)
458 status
= rx_desc
->status
;
459 skb
= buffer_info
->skb
;
460 buffer_info
->skb
= NULL
;
462 prefetch(skb
->data
- NET_IP_ALIGN
);
465 if (i
== rx_ring
->count
)
467 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
470 next_buffer
= &rx_ring
->buffer_info
[i
];
474 pci_unmap_single(pdev
,
476 adapter
->rx_buffer_len
,
478 buffer_info
->dma
= 0;
480 length
= le16_to_cpu(rx_desc
->length
);
482 /* !EOP means multiple descriptors were used to store a single
483 * packet, also make sure the frame isn't just CRC only */
484 if (!(status
& E1000_RXD_STAT_EOP
) || (length
<= 4)) {
485 /* All receives must fit into a single buffer */
486 e_dbg("%s: Receive packet consumed multiple buffers\n",
489 buffer_info
->skb
= skb
;
493 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
495 buffer_info
->skb
= skb
;
499 /* adjust length to remove Ethernet CRC */
500 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
503 total_rx_bytes
+= length
;
507 * code added for copybreak, this should improve
508 * performance for small packets with large amounts
509 * of reassembly being done in the stack
511 if (length
< copybreak
) {
512 struct sk_buff
*new_skb
=
513 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
515 skb_reserve(new_skb
, NET_IP_ALIGN
);
516 skb_copy_to_linear_data_offset(new_skb
,
522 /* save the skb in buffer_info as good */
523 buffer_info
->skb
= skb
;
526 /* else just continue with the old one */
528 /* end copybreak code */
529 skb_put(skb
, length
);
531 /* Receive Checksum Offload */
532 e1000_rx_checksum(adapter
,
534 ((u32
)(rx_desc
->errors
) << 24),
535 le16_to_cpu(rx_desc
->csum
), skb
);
537 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
542 /* return some buffers to hardware, one at a time is too slow */
543 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
544 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
548 /* use prefetched values */
550 buffer_info
= next_buffer
;
552 rx_ring
->next_to_clean
= i
;
554 cleaned_count
= e1000_desc_unused(rx_ring
);
556 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
558 adapter
->total_rx_bytes
+= total_rx_bytes
;
559 adapter
->total_rx_packets
+= total_rx_packets
;
560 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
561 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
565 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
566 struct e1000_buffer
*buffer_info
)
568 if (buffer_info
->dma
) {
569 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
570 buffer_info
->length
, PCI_DMA_TODEVICE
);
571 buffer_info
->dma
= 0;
573 if (buffer_info
->skb
) {
574 dev_kfree_skb_any(buffer_info
->skb
);
575 buffer_info
->skb
= NULL
;
579 static void e1000_print_tx_hang(struct e1000_adapter
*adapter
)
581 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
582 unsigned int i
= tx_ring
->next_to_clean
;
583 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
584 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
586 /* detected Tx unit hang */
587 e_err("Detected Tx Unit Hang:\n"
590 " next_to_use <%x>\n"
591 " next_to_clean <%x>\n"
592 "buffer_info[next_to_clean]:\n"
593 " time_stamp <%lx>\n"
594 " next_to_watch <%x>\n"
596 " next_to_watch.status <%x>\n",
597 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
598 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
599 tx_ring
->next_to_use
,
600 tx_ring
->next_to_clean
,
601 tx_ring
->buffer_info
[eop
].time_stamp
,
604 eop_desc
->upper
.fields
.status
);
608 * e1000_clean_tx_irq - Reclaim resources after transmit completes
609 * @adapter: board private structure
611 * the return value indicates whether actual cleaning was done, there
612 * is no guarantee that everything was cleaned
614 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
616 struct net_device
*netdev
= adapter
->netdev
;
617 struct e1000_hw
*hw
= &adapter
->hw
;
618 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
619 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
620 struct e1000_buffer
*buffer_info
;
622 unsigned int count
= 0;
624 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
626 i
= tx_ring
->next_to_clean
;
627 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
628 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
630 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
631 for (cleaned
= 0; !cleaned
; ) {
632 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
633 buffer_info
= &tx_ring
->buffer_info
[i
];
634 cleaned
= (i
== eop
);
637 struct sk_buff
*skb
= buffer_info
->skb
;
638 unsigned int segs
, bytecount
;
639 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
640 /* multiply data chunks by size of headers */
641 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
643 total_tx_packets
+= segs
;
644 total_tx_bytes
+= bytecount
;
647 e1000_put_txbuf(adapter
, buffer_info
);
648 tx_desc
->upper
.data
= 0;
651 if (i
== tx_ring
->count
)
655 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
656 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
657 #define E1000_TX_WEIGHT 64
658 /* weight of a sort for tx, to avoid endless transmit cleanup */
659 if (count
++ == E1000_TX_WEIGHT
)
663 tx_ring
->next_to_clean
= i
;
665 #define TX_WAKE_THRESHOLD 32
666 if (cleaned
&& netif_carrier_ok(netdev
) &&
667 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
668 /* Make sure that anybody stopping the queue after this
669 * sees the new next_to_clean.
673 if (netif_queue_stopped(netdev
) &&
674 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
675 netif_wake_queue(netdev
);
676 ++adapter
->restart_queue
;
680 if (adapter
->detect_tx_hung
) {
682 * Detect a transmit hang in hardware, this serializes the
683 * check with the clearing of time_stamp and movement of i
685 adapter
->detect_tx_hung
= 0;
686 if (tx_ring
->buffer_info
[eop
].dma
&&
687 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
688 + (adapter
->tx_timeout_factor
* HZ
))
689 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
690 e1000_print_tx_hang(adapter
);
691 netif_stop_queue(netdev
);
694 adapter
->total_tx_bytes
+= total_tx_bytes
;
695 adapter
->total_tx_packets
+= total_tx_packets
;
696 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
697 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
702 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
703 * @adapter: board private structure
705 * the return value indicates whether actual cleaning was done, there
706 * is no guarantee that everything was cleaned
708 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
709 int *work_done
, int work_to_do
)
711 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
712 struct net_device
*netdev
= adapter
->netdev
;
713 struct pci_dev
*pdev
= adapter
->pdev
;
714 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
715 struct e1000_buffer
*buffer_info
, *next_buffer
;
716 struct e1000_ps_page
*ps_page
;
720 int cleaned_count
= 0;
722 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
724 i
= rx_ring
->next_to_clean
;
725 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
726 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
727 buffer_info
= &rx_ring
->buffer_info
[i
];
729 while (staterr
& E1000_RXD_STAT_DD
) {
730 if (*work_done
>= work_to_do
)
733 skb
= buffer_info
->skb
;
735 /* in the packet split case this is header only */
736 prefetch(skb
->data
- NET_IP_ALIGN
);
739 if (i
== rx_ring
->count
)
741 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
744 next_buffer
= &rx_ring
->buffer_info
[i
];
748 pci_unmap_single(pdev
, buffer_info
->dma
,
749 adapter
->rx_ps_bsize0
,
751 buffer_info
->dma
= 0;
753 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
754 e_dbg("%s: Packet Split buffers didn't pick up the "
755 "full packet\n", netdev
->name
);
756 dev_kfree_skb_irq(skb
);
760 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
761 dev_kfree_skb_irq(skb
);
765 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
768 e_dbg("%s: Last part of the packet spanning multiple "
769 "descriptors\n", netdev
->name
);
770 dev_kfree_skb_irq(skb
);
775 skb_put(skb
, length
);
779 * this looks ugly, but it seems compiler issues make it
780 * more efficient than reusing j
782 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
785 * page alloc/put takes too long and effects small packet
786 * throughput, so unsplit small packets and save the alloc/put
787 * only valid in softirq (napi) context to call kmap_*
789 if (l1
&& (l1
<= copybreak
) &&
790 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
793 ps_page
= &buffer_info
->ps_pages
[0];
796 * there is no documentation about how to call
797 * kmap_atomic, so we can't hold the mapping
800 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
801 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
802 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
803 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
804 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
805 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
806 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
809 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
817 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
818 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
822 ps_page
= &buffer_info
->ps_pages
[j
];
823 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
826 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
827 ps_page
->page
= NULL
;
829 skb
->data_len
+= length
;
830 skb
->truesize
+= length
;
833 /* strip the ethernet crc, problem is we're using pages now so
834 * this whole operation can get a little cpu intensive
836 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
837 pskb_trim(skb
, skb
->len
- 4);
840 total_rx_bytes
+= skb
->len
;
843 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
844 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
846 if (rx_desc
->wb
.upper
.header_status
&
847 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
848 adapter
->rx_hdr_split
++;
850 e1000_receive_skb(adapter
, netdev
, skb
,
851 staterr
, rx_desc
->wb
.middle
.vlan
);
854 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
855 buffer_info
->skb
= NULL
;
857 /* return some buffers to hardware, one at a time is too slow */
858 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
859 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
863 /* use prefetched values */
865 buffer_info
= next_buffer
;
867 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
869 rx_ring
->next_to_clean
= i
;
871 cleaned_count
= e1000_desc_unused(rx_ring
);
873 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
875 adapter
->total_rx_bytes
+= total_rx_bytes
;
876 adapter
->total_rx_packets
+= total_rx_packets
;
877 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
878 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
883 * e1000_consume_page - helper function
885 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
890 skb
->data_len
+= length
;
891 skb
->truesize
+= length
;
895 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
896 * @adapter: board private structure
898 * the return value indicates whether actual cleaning was done, there
899 * is no guarantee that everything was cleaned
902 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
903 int *work_done
, int work_to_do
)
905 struct net_device
*netdev
= adapter
->netdev
;
906 struct pci_dev
*pdev
= adapter
->pdev
;
907 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
908 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
909 struct e1000_buffer
*buffer_info
, *next_buffer
;
912 int cleaned_count
= 0;
913 bool cleaned
= false;
914 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
916 i
= rx_ring
->next_to_clean
;
917 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
918 buffer_info
= &rx_ring
->buffer_info
[i
];
920 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
924 if (*work_done
>= work_to_do
)
928 status
= rx_desc
->status
;
929 skb
= buffer_info
->skb
;
930 buffer_info
->skb
= NULL
;
933 if (i
== rx_ring
->count
)
935 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
938 next_buffer
= &rx_ring
->buffer_info
[i
];
942 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
944 buffer_info
->dma
= 0;
946 length
= le16_to_cpu(rx_desc
->length
);
948 /* errors is only valid for DD + EOP descriptors */
949 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
950 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
951 /* recycle both page and skb */
952 buffer_info
->skb
= skb
;
953 /* an error means any chain goes out the window
955 if (rx_ring
->rx_skb_top
)
956 dev_kfree_skb(rx_ring
->rx_skb_top
);
957 rx_ring
->rx_skb_top
= NULL
;
961 #define rxtop rx_ring->rx_skb_top
962 if (!(status
& E1000_RXD_STAT_EOP
)) {
963 /* this descriptor is only the beginning (or middle) */
965 /* this is the beginning of a chain */
967 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
970 /* this is the middle of a chain */
971 skb_fill_page_desc(rxtop
,
972 skb_shinfo(rxtop
)->nr_frags
,
973 buffer_info
->page
, 0, length
);
974 /* re-use the skb, only consumed the page */
975 buffer_info
->skb
= skb
;
977 e1000_consume_page(buffer_info
, rxtop
, length
);
981 /* end of the chain */
982 skb_fill_page_desc(rxtop
,
983 skb_shinfo(rxtop
)->nr_frags
,
984 buffer_info
->page
, 0, length
);
985 /* re-use the current skb, we only consumed the
987 buffer_info
->skb
= skb
;
990 e1000_consume_page(buffer_info
, skb
, length
);
992 /* no chain, got EOP, this buf is the packet
993 * copybreak to save the put_page/alloc_page */
994 if (length
<= copybreak
&&
995 skb_tailroom(skb
) >= length
) {
997 vaddr
= kmap_atomic(buffer_info
->page
,
998 KM_SKB_DATA_SOFTIRQ
);
999 memcpy(skb_tail_pointer(skb
), vaddr
,
1001 kunmap_atomic(vaddr
,
1002 KM_SKB_DATA_SOFTIRQ
);
1003 /* re-use the page, so don't erase
1004 * buffer_info->page */
1005 skb_put(skb
, length
);
1007 skb_fill_page_desc(skb
, 0,
1008 buffer_info
->page
, 0,
1010 e1000_consume_page(buffer_info
, skb
,
1016 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1017 e1000_rx_checksum(adapter
,
1019 ((u32
)(rx_desc
->errors
) << 24),
1020 le16_to_cpu(rx_desc
->csum
), skb
);
1022 /* probably a little skewed due to removing CRC */
1023 total_rx_bytes
+= skb
->len
;
1026 /* eth type trans needs skb->data to point to something */
1027 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1028 e_err("pskb_may_pull failed.\n");
1033 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1037 rx_desc
->status
= 0;
1039 /* return some buffers to hardware, one at a time is too slow */
1040 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1041 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1045 /* use prefetched values */
1047 buffer_info
= next_buffer
;
1049 rx_ring
->next_to_clean
= i
;
1051 cleaned_count
= e1000_desc_unused(rx_ring
);
1053 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1055 adapter
->total_rx_bytes
+= total_rx_bytes
;
1056 adapter
->total_rx_packets
+= total_rx_packets
;
1057 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1058 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1063 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1064 * @adapter: board private structure
1066 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1068 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1069 struct e1000_buffer
*buffer_info
;
1070 struct e1000_ps_page
*ps_page
;
1071 struct pci_dev
*pdev
= adapter
->pdev
;
1074 /* Free all the Rx ring sk_buffs */
1075 for (i
= 0; i
< rx_ring
->count
; i
++) {
1076 buffer_info
= &rx_ring
->buffer_info
[i
];
1077 if (buffer_info
->dma
) {
1078 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1079 pci_unmap_single(pdev
, buffer_info
->dma
,
1080 adapter
->rx_buffer_len
,
1081 PCI_DMA_FROMDEVICE
);
1082 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1083 pci_unmap_page(pdev
, buffer_info
->dma
,
1085 PCI_DMA_FROMDEVICE
);
1086 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1087 pci_unmap_single(pdev
, buffer_info
->dma
,
1088 adapter
->rx_ps_bsize0
,
1089 PCI_DMA_FROMDEVICE
);
1090 buffer_info
->dma
= 0;
1093 if (buffer_info
->page
) {
1094 put_page(buffer_info
->page
);
1095 buffer_info
->page
= NULL
;
1098 if (buffer_info
->skb
) {
1099 dev_kfree_skb(buffer_info
->skb
);
1100 buffer_info
->skb
= NULL
;
1103 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1104 ps_page
= &buffer_info
->ps_pages
[j
];
1107 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1108 PCI_DMA_FROMDEVICE
);
1110 put_page(ps_page
->page
);
1111 ps_page
->page
= NULL
;
1115 /* there also may be some cached data from a chained receive */
1116 if (rx_ring
->rx_skb_top
) {
1117 dev_kfree_skb(rx_ring
->rx_skb_top
);
1118 rx_ring
->rx_skb_top
= NULL
;
1121 /* Zero out the descriptor ring */
1122 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1124 rx_ring
->next_to_clean
= 0;
1125 rx_ring
->next_to_use
= 0;
1127 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1128 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1131 static void e1000e_downshift_workaround(struct work_struct
*work
)
1133 struct e1000_adapter
*adapter
= container_of(work
,
1134 struct e1000_adapter
, downshift_task
);
1136 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1140 * e1000_intr_msi - Interrupt Handler
1141 * @irq: interrupt number
1142 * @data: pointer to a network interface device structure
1144 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1146 struct net_device
*netdev
= data
;
1147 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1148 struct e1000_hw
*hw
= &adapter
->hw
;
1149 u32 icr
= er32(ICR
);
1152 * read ICR disables interrupts using IAM
1155 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1156 hw
->mac
.get_link_status
= 1;
1158 * ICH8 workaround-- Call gig speed drop workaround on cable
1159 * disconnect (LSC) before accessing any PHY registers
1161 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1162 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1163 schedule_work(&adapter
->downshift_task
);
1166 * 80003ES2LAN workaround-- For packet buffer work-around on
1167 * link down event; disable receives here in the ISR and reset
1168 * adapter in watchdog
1170 if (netif_carrier_ok(netdev
) &&
1171 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1172 /* disable receives */
1173 u32 rctl
= er32(RCTL
);
1174 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1175 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1177 /* guard against interrupt when we're going down */
1178 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1179 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1182 if (napi_schedule_prep(&adapter
->napi
)) {
1183 adapter
->total_tx_bytes
= 0;
1184 adapter
->total_tx_packets
= 0;
1185 adapter
->total_rx_bytes
= 0;
1186 adapter
->total_rx_packets
= 0;
1187 __napi_schedule(&adapter
->napi
);
1194 * e1000_intr - Interrupt Handler
1195 * @irq: interrupt number
1196 * @data: pointer to a network interface device structure
1198 static irqreturn_t
e1000_intr(int irq
, void *data
)
1200 struct net_device
*netdev
= data
;
1201 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1202 struct e1000_hw
*hw
= &adapter
->hw
;
1203 u32 rctl
, icr
= er32(ICR
);
1206 return IRQ_NONE
; /* Not our interrupt */
1209 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1210 * not set, then the adapter didn't send an interrupt
1212 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1216 * Interrupt Auto-Mask...upon reading ICR,
1217 * interrupts are masked. No need for the
1221 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1222 hw
->mac
.get_link_status
= 1;
1224 * ICH8 workaround-- Call gig speed drop workaround on cable
1225 * disconnect (LSC) before accessing any PHY registers
1227 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1228 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1229 schedule_work(&adapter
->downshift_task
);
1232 * 80003ES2LAN workaround--
1233 * For packet buffer work-around on link down event;
1234 * disable receives here in the ISR and
1235 * reset adapter in watchdog
1237 if (netif_carrier_ok(netdev
) &&
1238 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1239 /* disable receives */
1241 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1242 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1244 /* guard against interrupt when we're going down */
1245 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1246 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1249 if (napi_schedule_prep(&adapter
->napi
)) {
1250 adapter
->total_tx_bytes
= 0;
1251 adapter
->total_tx_packets
= 0;
1252 adapter
->total_rx_bytes
= 0;
1253 adapter
->total_rx_packets
= 0;
1254 __napi_schedule(&adapter
->napi
);
1260 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1262 struct net_device
*netdev
= data
;
1263 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1264 struct e1000_hw
*hw
= &adapter
->hw
;
1265 u32 icr
= er32(ICR
);
1267 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1268 ew32(IMS
, E1000_IMS_OTHER
);
1272 if (icr
& adapter
->eiac_mask
)
1273 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1275 if (icr
& E1000_ICR_OTHER
) {
1276 if (!(icr
& E1000_ICR_LSC
))
1277 goto no_link_interrupt
;
1278 hw
->mac
.get_link_status
= 1;
1279 /* guard against interrupt when we're going down */
1280 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1281 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1285 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1291 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1293 struct net_device
*netdev
= data
;
1294 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1295 struct e1000_hw
*hw
= &adapter
->hw
;
1296 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1299 adapter
->total_tx_bytes
= 0;
1300 adapter
->total_tx_packets
= 0;
1302 if (!e1000_clean_tx_irq(adapter
))
1303 /* Ring was not completely cleaned, so fire another interrupt */
1304 ew32(ICS
, tx_ring
->ims_val
);
1309 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1311 struct net_device
*netdev
= data
;
1312 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1314 /* Write the ITR value calculated at the end of the
1315 * previous interrupt.
1317 if (adapter
->rx_ring
->set_itr
) {
1318 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1319 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1320 adapter
->rx_ring
->set_itr
= 0;
1323 if (napi_schedule_prep(&adapter
->napi
)) {
1324 adapter
->total_rx_bytes
= 0;
1325 adapter
->total_rx_packets
= 0;
1326 __napi_schedule(&adapter
->napi
);
1332 * e1000_configure_msix - Configure MSI-X hardware
1334 * e1000_configure_msix sets up the hardware to properly
1335 * generate MSI-X interrupts.
1337 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1339 struct e1000_hw
*hw
= &adapter
->hw
;
1340 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1341 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1343 u32 ctrl_ext
, ivar
= 0;
1345 adapter
->eiac_mask
= 0;
1347 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1348 if (hw
->mac
.type
== e1000_82574
) {
1349 u32 rfctl
= er32(RFCTL
);
1350 rfctl
|= E1000_RFCTL_ACK_DIS
;
1354 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1355 /* Configure Rx vector */
1356 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1357 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1358 if (rx_ring
->itr_val
)
1359 writel(1000000000 / (rx_ring
->itr_val
* 256),
1360 hw
->hw_addr
+ rx_ring
->itr_register
);
1362 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1363 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1365 /* Configure Tx vector */
1366 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1368 if (tx_ring
->itr_val
)
1369 writel(1000000000 / (tx_ring
->itr_val
* 256),
1370 hw
->hw_addr
+ tx_ring
->itr_register
);
1372 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1373 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1374 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1376 /* set vector for Other Causes, e.g. link changes */
1378 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1379 if (rx_ring
->itr_val
)
1380 writel(1000000000 / (rx_ring
->itr_val
* 256),
1381 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1383 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1385 /* Cause Tx interrupts on every write back */
1390 /* enable MSI-X PBA support */
1391 ctrl_ext
= er32(CTRL_EXT
);
1392 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1394 /* Auto-Mask Other interrupts upon ICR read */
1395 #define E1000_EIAC_MASK_82574 0x01F00000
1396 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1397 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1398 ew32(CTRL_EXT
, ctrl_ext
);
1402 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1404 if (adapter
->msix_entries
) {
1405 pci_disable_msix(adapter
->pdev
);
1406 kfree(adapter
->msix_entries
);
1407 adapter
->msix_entries
= NULL
;
1408 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1409 pci_disable_msi(adapter
->pdev
);
1410 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1417 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1419 * Attempt to configure interrupts using the best available
1420 * capabilities of the hardware and kernel.
1422 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1428 switch (adapter
->int_mode
) {
1429 case E1000E_INT_MODE_MSIX
:
1430 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1431 numvecs
= 3; /* RxQ0, TxQ0 and other */
1432 adapter
->msix_entries
= kcalloc(numvecs
,
1433 sizeof(struct msix_entry
),
1435 if (adapter
->msix_entries
) {
1436 for (i
= 0; i
< numvecs
; i
++)
1437 adapter
->msix_entries
[i
].entry
= i
;
1439 err
= pci_enable_msix(adapter
->pdev
,
1440 adapter
->msix_entries
,
1445 /* MSI-X failed, so fall through and try MSI */
1446 e_err("Failed to initialize MSI-X interrupts. "
1447 "Falling back to MSI interrupts.\n");
1448 e1000e_reset_interrupt_capability(adapter
);
1450 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1452 case E1000E_INT_MODE_MSI
:
1453 if (!pci_enable_msi(adapter
->pdev
)) {
1454 adapter
->flags
|= FLAG_MSI_ENABLED
;
1456 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1457 e_err("Failed to initialize MSI interrupts. Falling "
1458 "back to legacy interrupts.\n");
1461 case E1000E_INT_MODE_LEGACY
:
1462 /* Don't do anything; this is the system default */
1470 * e1000_request_msix - Initialize MSI-X interrupts
1472 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1475 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1477 struct net_device
*netdev
= adapter
->netdev
;
1478 int err
= 0, vector
= 0;
1480 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1481 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1483 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1484 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1485 &e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1489 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1490 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1493 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1494 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1496 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1497 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1498 &e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1502 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1503 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1506 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1507 &e1000_msix_other
, 0, netdev
->name
, netdev
);
1511 e1000_configure_msix(adapter
);
1518 * e1000_request_irq - initialize interrupts
1520 * Attempts to configure interrupts using the best available
1521 * capabilities of the hardware and kernel.
1523 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1525 struct net_device
*netdev
= adapter
->netdev
;
1528 if (adapter
->msix_entries
) {
1529 err
= e1000_request_msix(adapter
);
1532 /* fall back to MSI */
1533 e1000e_reset_interrupt_capability(adapter
);
1534 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1535 e1000e_set_interrupt_capability(adapter
);
1537 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1538 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, 0,
1539 netdev
->name
, netdev
);
1543 /* fall back to legacy interrupt */
1544 e1000e_reset_interrupt_capability(adapter
);
1545 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1548 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, IRQF_SHARED
,
1549 netdev
->name
, netdev
);
1551 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1556 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1558 struct net_device
*netdev
= adapter
->netdev
;
1560 if (adapter
->msix_entries
) {
1563 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1566 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1569 /* Other Causes interrupt vector */
1570 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1574 free_irq(adapter
->pdev
->irq
, netdev
);
1578 * e1000_irq_disable - Mask off interrupt generation on the NIC
1580 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1582 struct e1000_hw
*hw
= &adapter
->hw
;
1585 if (adapter
->msix_entries
)
1586 ew32(EIAC_82574
, 0);
1588 synchronize_irq(adapter
->pdev
->irq
);
1592 * e1000_irq_enable - Enable default interrupt generation settings
1594 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1596 struct e1000_hw
*hw
= &adapter
->hw
;
1598 if (adapter
->msix_entries
) {
1599 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1600 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1602 ew32(IMS
, IMS_ENABLE_MASK
);
1608 * e1000_get_hw_control - get control of the h/w from f/w
1609 * @adapter: address of board private structure
1611 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1612 * For ASF and Pass Through versions of f/w this means that
1613 * the driver is loaded. For AMT version (only with 82573)
1614 * of the f/w this means that the network i/f is open.
1616 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1618 struct e1000_hw
*hw
= &adapter
->hw
;
1622 /* Let firmware know the driver has taken over */
1623 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1625 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1626 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1627 ctrl_ext
= er32(CTRL_EXT
);
1628 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1633 * e1000_release_hw_control - release control of the h/w to f/w
1634 * @adapter: address of board private structure
1636 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1637 * For ASF and Pass Through versions of f/w this means that the
1638 * driver is no longer loaded. For AMT version (only with 82573) i
1639 * of the f/w this means that the network i/f is closed.
1642 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1644 struct e1000_hw
*hw
= &adapter
->hw
;
1648 /* Let firmware taken over control of h/w */
1649 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1651 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1652 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1653 ctrl_ext
= er32(CTRL_EXT
);
1654 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1659 * @e1000_alloc_ring - allocate memory for a ring structure
1661 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1662 struct e1000_ring
*ring
)
1664 struct pci_dev
*pdev
= adapter
->pdev
;
1666 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1675 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1676 * @adapter: board private structure
1678 * Return 0 on success, negative on failure
1680 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1682 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1683 int err
= -ENOMEM
, size
;
1685 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1686 tx_ring
->buffer_info
= vmalloc(size
);
1687 if (!tx_ring
->buffer_info
)
1689 memset(tx_ring
->buffer_info
, 0, size
);
1691 /* round up to nearest 4K */
1692 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1693 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1695 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1699 tx_ring
->next_to_use
= 0;
1700 tx_ring
->next_to_clean
= 0;
1704 vfree(tx_ring
->buffer_info
);
1705 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1710 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1711 * @adapter: board private structure
1713 * Returns 0 on success, negative on failure
1715 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1717 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1718 struct e1000_buffer
*buffer_info
;
1719 int i
, size
, desc_len
, err
= -ENOMEM
;
1721 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1722 rx_ring
->buffer_info
= vmalloc(size
);
1723 if (!rx_ring
->buffer_info
)
1725 memset(rx_ring
->buffer_info
, 0, size
);
1727 for (i
= 0; i
< rx_ring
->count
; i
++) {
1728 buffer_info
= &rx_ring
->buffer_info
[i
];
1729 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1730 sizeof(struct e1000_ps_page
),
1732 if (!buffer_info
->ps_pages
)
1736 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1738 /* Round up to nearest 4K */
1739 rx_ring
->size
= rx_ring
->count
* desc_len
;
1740 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1742 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1746 rx_ring
->next_to_clean
= 0;
1747 rx_ring
->next_to_use
= 0;
1748 rx_ring
->rx_skb_top
= NULL
;
1753 for (i
= 0; i
< rx_ring
->count
; i
++) {
1754 buffer_info
= &rx_ring
->buffer_info
[i
];
1755 kfree(buffer_info
->ps_pages
);
1758 vfree(rx_ring
->buffer_info
);
1759 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1764 * e1000_clean_tx_ring - Free Tx Buffers
1765 * @adapter: board private structure
1767 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1769 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1770 struct e1000_buffer
*buffer_info
;
1774 for (i
= 0; i
< tx_ring
->count
; i
++) {
1775 buffer_info
= &tx_ring
->buffer_info
[i
];
1776 e1000_put_txbuf(adapter
, buffer_info
);
1779 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1780 memset(tx_ring
->buffer_info
, 0, size
);
1782 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1784 tx_ring
->next_to_use
= 0;
1785 tx_ring
->next_to_clean
= 0;
1787 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1788 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1792 * e1000e_free_tx_resources - Free Tx Resources per Queue
1793 * @adapter: board private structure
1795 * Free all transmit software resources
1797 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1799 struct pci_dev
*pdev
= adapter
->pdev
;
1800 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1802 e1000_clean_tx_ring(adapter
);
1804 vfree(tx_ring
->buffer_info
);
1805 tx_ring
->buffer_info
= NULL
;
1807 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1809 tx_ring
->desc
= NULL
;
1813 * e1000e_free_rx_resources - Free Rx Resources
1814 * @adapter: board private structure
1816 * Free all receive software resources
1819 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1821 struct pci_dev
*pdev
= adapter
->pdev
;
1822 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1825 e1000_clean_rx_ring(adapter
);
1827 for (i
= 0; i
< rx_ring
->count
; i
++) {
1828 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1831 vfree(rx_ring
->buffer_info
);
1832 rx_ring
->buffer_info
= NULL
;
1834 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1836 rx_ring
->desc
= NULL
;
1840 * e1000_update_itr - update the dynamic ITR value based on statistics
1841 * @adapter: pointer to adapter
1842 * @itr_setting: current adapter->itr
1843 * @packets: the number of packets during this measurement interval
1844 * @bytes: the number of bytes during this measurement interval
1846 * Stores a new ITR value based on packets and byte
1847 * counts during the last interrupt. The advantage of per interrupt
1848 * computation is faster updates and more accurate ITR for the current
1849 * traffic pattern. Constants in this function were computed
1850 * based on theoretical maximum wire speed and thresholds were set based
1851 * on testing data as well as attempting to minimize response time
1852 * while increasing bulk throughput. This functionality is controlled
1853 * by the InterruptThrottleRate module parameter.
1855 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1856 u16 itr_setting
, int packets
,
1859 unsigned int retval
= itr_setting
;
1862 goto update_itr_done
;
1864 switch (itr_setting
) {
1865 case lowest_latency
:
1866 /* handle TSO and jumbo frames */
1867 if (bytes
/packets
> 8000)
1868 retval
= bulk_latency
;
1869 else if ((packets
< 5) && (bytes
> 512)) {
1870 retval
= low_latency
;
1873 case low_latency
: /* 50 usec aka 20000 ints/s */
1874 if (bytes
> 10000) {
1875 /* this if handles the TSO accounting */
1876 if (bytes
/packets
> 8000) {
1877 retval
= bulk_latency
;
1878 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1879 retval
= bulk_latency
;
1880 } else if ((packets
> 35)) {
1881 retval
= lowest_latency
;
1883 } else if (bytes
/packets
> 2000) {
1884 retval
= bulk_latency
;
1885 } else if (packets
<= 2 && bytes
< 512) {
1886 retval
= lowest_latency
;
1889 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1890 if (bytes
> 25000) {
1892 retval
= low_latency
;
1894 } else if (bytes
< 6000) {
1895 retval
= low_latency
;
1904 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1906 struct e1000_hw
*hw
= &adapter
->hw
;
1908 u32 new_itr
= adapter
->itr
;
1910 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1911 if (adapter
->link_speed
!= SPEED_1000
) {
1917 adapter
->tx_itr
= e1000_update_itr(adapter
,
1919 adapter
->total_tx_packets
,
1920 adapter
->total_tx_bytes
);
1921 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1922 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1923 adapter
->tx_itr
= low_latency
;
1925 adapter
->rx_itr
= e1000_update_itr(adapter
,
1927 adapter
->total_rx_packets
,
1928 adapter
->total_rx_bytes
);
1929 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1930 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1931 adapter
->rx_itr
= low_latency
;
1933 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1935 switch (current_itr
) {
1936 /* counts and packets in update_itr are dependent on these numbers */
1937 case lowest_latency
:
1941 new_itr
= 20000; /* aka hwitr = ~200 */
1951 if (new_itr
!= adapter
->itr
) {
1953 * this attempts to bias the interrupt rate towards Bulk
1954 * by adding intermediate steps when interrupt rate is
1957 new_itr
= new_itr
> adapter
->itr
?
1958 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1960 adapter
->itr
= new_itr
;
1961 adapter
->rx_ring
->itr_val
= new_itr
;
1962 if (adapter
->msix_entries
)
1963 adapter
->rx_ring
->set_itr
= 1;
1965 ew32(ITR
, 1000000000 / (new_itr
* 256));
1970 * e1000_alloc_queues - Allocate memory for all rings
1971 * @adapter: board private structure to initialize
1973 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1975 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1976 if (!adapter
->tx_ring
)
1979 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1980 if (!adapter
->rx_ring
)
1985 e_err("Unable to allocate memory for queues\n");
1986 kfree(adapter
->rx_ring
);
1987 kfree(adapter
->tx_ring
);
1992 * e1000_clean - NAPI Rx polling callback
1993 * @napi: struct associated with this polling callback
1994 * @budget: amount of packets driver is allowed to process this poll
1996 static int e1000_clean(struct napi_struct
*napi
, int budget
)
1998 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
1999 struct e1000_hw
*hw
= &adapter
->hw
;
2000 struct net_device
*poll_dev
= adapter
->netdev
;
2001 int tx_cleaned
= 0, work_done
= 0;
2003 adapter
= netdev_priv(poll_dev
);
2005 if (adapter
->msix_entries
&&
2006 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2009 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2012 adapter
->clean_rx(adapter
, &work_done
, budget
);
2017 /* If budget not fully consumed, exit the polling mode */
2018 if (work_done
< budget
) {
2019 if (adapter
->itr_setting
& 3)
2020 e1000_set_itr(adapter
);
2021 napi_complete(napi
);
2022 if (adapter
->msix_entries
)
2023 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2025 e1000_irq_enable(adapter
);
2031 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2033 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2034 struct e1000_hw
*hw
= &adapter
->hw
;
2037 /* don't update vlan cookie if already programmed */
2038 if ((adapter
->hw
.mng_cookie
.status
&
2039 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2040 (vid
== adapter
->mng_vlan_id
))
2042 /* add VID to filter table */
2043 index
= (vid
>> 5) & 0x7F;
2044 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2045 vfta
|= (1 << (vid
& 0x1F));
2046 e1000e_write_vfta(hw
, index
, vfta
);
2049 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2051 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2052 struct e1000_hw
*hw
= &adapter
->hw
;
2055 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2056 e1000_irq_disable(adapter
);
2057 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2059 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2060 e1000_irq_enable(adapter
);
2062 if ((adapter
->hw
.mng_cookie
.status
&
2063 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2064 (vid
== adapter
->mng_vlan_id
)) {
2065 /* release control to f/w */
2066 e1000_release_hw_control(adapter
);
2070 /* remove VID from filter table */
2071 index
= (vid
>> 5) & 0x7F;
2072 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2073 vfta
&= ~(1 << (vid
& 0x1F));
2074 e1000e_write_vfta(hw
, index
, vfta
);
2077 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2079 struct net_device
*netdev
= adapter
->netdev
;
2080 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2081 u16 old_vid
= adapter
->mng_vlan_id
;
2083 if (!adapter
->vlgrp
)
2086 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2087 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2088 if (adapter
->hw
.mng_cookie
.status
&
2089 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2090 e1000_vlan_rx_add_vid(netdev
, vid
);
2091 adapter
->mng_vlan_id
= vid
;
2094 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2096 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2097 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2099 adapter
->mng_vlan_id
= vid
;
2104 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2105 struct vlan_group
*grp
)
2107 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2108 struct e1000_hw
*hw
= &adapter
->hw
;
2111 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2112 e1000_irq_disable(adapter
);
2113 adapter
->vlgrp
= grp
;
2116 /* enable VLAN tag insert/strip */
2118 ctrl
|= E1000_CTRL_VME
;
2121 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2122 /* enable VLAN receive filtering */
2124 rctl
&= ~E1000_RCTL_CFIEN
;
2126 e1000_update_mng_vlan(adapter
);
2129 /* disable VLAN tag insert/strip */
2131 ctrl
&= ~E1000_CTRL_VME
;
2134 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2135 if (adapter
->mng_vlan_id
!=
2136 (u16
)E1000_MNG_VLAN_NONE
) {
2137 e1000_vlan_rx_kill_vid(netdev
,
2138 adapter
->mng_vlan_id
);
2139 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2144 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2145 e1000_irq_enable(adapter
);
2148 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2152 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2154 if (!adapter
->vlgrp
)
2157 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2158 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2160 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2164 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
2166 struct e1000_hw
*hw
= &adapter
->hw
;
2169 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2175 * enable receiving management packets to the host. this will probably
2176 * generate destination unreachable messages from the host OS, but
2177 * the packets will be handled on SMBUS
2179 manc
|= E1000_MANC_EN_MNG2HOST
;
2180 manc2h
= er32(MANC2H
);
2181 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2182 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2183 manc2h
|= E1000_MNG2HOST_PORT_623
;
2184 manc2h
|= E1000_MNG2HOST_PORT_664
;
2185 ew32(MANC2H
, manc2h
);
2190 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2191 * @adapter: board private structure
2193 * Configure the Tx unit of the MAC after a reset.
2195 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2197 struct e1000_hw
*hw
= &adapter
->hw
;
2198 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2200 u32 tdlen
, tctl
, tipg
, tarc
;
2203 /* Setup the HW Tx Head and Tail descriptor pointers */
2204 tdba
= tx_ring
->dma
;
2205 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2206 ew32(TDBAL
, (tdba
& DMA_32BIT_MASK
));
2207 ew32(TDBAH
, (tdba
>> 32));
2211 tx_ring
->head
= E1000_TDH
;
2212 tx_ring
->tail
= E1000_TDT
;
2214 /* Set the default values for the Tx Inter Packet Gap timer */
2215 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2216 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2217 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2219 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2220 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2222 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2223 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2226 /* Set the Tx Interrupt Delay register */
2227 ew32(TIDV
, adapter
->tx_int_delay
);
2228 /* Tx irq moderation */
2229 ew32(TADV
, adapter
->tx_abs_int_delay
);
2231 /* Program the Transmit Control Register */
2233 tctl
&= ~E1000_TCTL_CT
;
2234 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2235 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2237 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2238 tarc
= er32(TARC(0));
2240 * set the speed mode bit, we'll clear it if we're not at
2241 * gigabit link later
2243 #define SPEED_MODE_BIT (1 << 21)
2244 tarc
|= SPEED_MODE_BIT
;
2245 ew32(TARC(0), tarc
);
2248 /* errata: program both queues to unweighted RR */
2249 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2250 tarc
= er32(TARC(0));
2252 ew32(TARC(0), tarc
);
2253 tarc
= er32(TARC(1));
2255 ew32(TARC(1), tarc
);
2258 e1000e_config_collision_dist(hw
);
2260 /* Setup Transmit Descriptor Settings for eop descriptor */
2261 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2263 /* only set IDE if we are delaying interrupts using the timers */
2264 if (adapter
->tx_int_delay
)
2265 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2267 /* enable Report Status bit */
2268 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2272 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
2276 * e1000_setup_rctl - configure the receive control registers
2277 * @adapter: Board private structure
2279 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2280 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2281 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2283 struct e1000_hw
*hw
= &adapter
->hw
;
2288 /* Program MC offset vector base */
2290 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2291 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2292 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2293 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2295 /* Do not Store bad packets */
2296 rctl
&= ~E1000_RCTL_SBP
;
2298 /* Enable Long Packet receive */
2299 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2300 rctl
&= ~E1000_RCTL_LPE
;
2302 rctl
|= E1000_RCTL_LPE
;
2304 /* Some systems expect that the CRC is included in SMBUS traffic. The
2305 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2306 * host memory when this is enabled
2308 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2309 rctl
|= E1000_RCTL_SECRC
;
2311 /* Setup buffer sizes */
2312 rctl
&= ~E1000_RCTL_SZ_4096
;
2313 rctl
|= E1000_RCTL_BSEX
;
2314 switch (adapter
->rx_buffer_len
) {
2316 rctl
|= E1000_RCTL_SZ_256
;
2317 rctl
&= ~E1000_RCTL_BSEX
;
2320 rctl
|= E1000_RCTL_SZ_512
;
2321 rctl
&= ~E1000_RCTL_BSEX
;
2324 rctl
|= E1000_RCTL_SZ_1024
;
2325 rctl
&= ~E1000_RCTL_BSEX
;
2329 rctl
|= E1000_RCTL_SZ_2048
;
2330 rctl
&= ~E1000_RCTL_BSEX
;
2333 rctl
|= E1000_RCTL_SZ_4096
;
2336 rctl
|= E1000_RCTL_SZ_8192
;
2339 rctl
|= E1000_RCTL_SZ_16384
;
2344 * 82571 and greater support packet-split where the protocol
2345 * header is placed in skb->data and the packet data is
2346 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2347 * In the case of a non-split, skb->data is linearly filled,
2348 * followed by the page buffers. Therefore, skb->data is
2349 * sized to hold the largest protocol header.
2351 * allocations using alloc_page take too long for regular MTU
2352 * so only enable packet split for jumbo frames
2354 * Using pages when the page size is greater than 16k wastes
2355 * a lot of memory, since we allocate 3 pages at all times
2358 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2359 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2360 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2361 adapter
->rx_ps_pages
= pages
;
2363 adapter
->rx_ps_pages
= 0;
2365 if (adapter
->rx_ps_pages
) {
2366 /* Configure extra packet-split registers */
2367 rfctl
= er32(RFCTL
);
2368 rfctl
|= E1000_RFCTL_EXTEN
;
2370 * disable packet split support for IPv6 extension headers,
2371 * because some malformed IPv6 headers can hang the Rx
2373 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2374 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2378 /* Enable Packet split descriptors */
2379 rctl
|= E1000_RCTL_DTYP_PS
;
2381 psrctl
|= adapter
->rx_ps_bsize0
>>
2382 E1000_PSRCTL_BSIZE0_SHIFT
;
2384 switch (adapter
->rx_ps_pages
) {
2386 psrctl
|= PAGE_SIZE
<<
2387 E1000_PSRCTL_BSIZE3_SHIFT
;
2389 psrctl
|= PAGE_SIZE
<<
2390 E1000_PSRCTL_BSIZE2_SHIFT
;
2392 psrctl
|= PAGE_SIZE
>>
2393 E1000_PSRCTL_BSIZE1_SHIFT
;
2397 ew32(PSRCTL
, psrctl
);
2401 /* just started the receive unit, no need to restart */
2402 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2406 * e1000_configure_rx - Configure Receive Unit after Reset
2407 * @adapter: board private structure
2409 * Configure the Rx unit of the MAC after a reset.
2411 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2413 struct e1000_hw
*hw
= &adapter
->hw
;
2414 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2416 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2418 if (adapter
->rx_ps_pages
) {
2419 /* this is a 32 byte descriptor */
2420 rdlen
= rx_ring
->count
*
2421 sizeof(union e1000_rx_desc_packet_split
);
2422 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2423 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2424 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2425 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2426 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2427 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2429 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2430 adapter
->clean_rx
= e1000_clean_rx_irq
;
2431 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2434 /* disable receives while setting up the descriptors */
2436 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2440 /* set the Receive Delay Timer Register */
2441 ew32(RDTR
, adapter
->rx_int_delay
);
2443 /* irq moderation */
2444 ew32(RADV
, adapter
->rx_abs_int_delay
);
2445 if (adapter
->itr_setting
!= 0)
2446 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2448 ctrl_ext
= er32(CTRL_EXT
);
2449 /* Reset delay timers after every interrupt */
2450 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2451 /* Auto-Mask interrupts upon ICR access */
2452 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2453 ew32(IAM
, 0xffffffff);
2454 ew32(CTRL_EXT
, ctrl_ext
);
2458 * Setup the HW Rx Head and Tail Descriptor Pointers and
2459 * the Base and Length of the Rx Descriptor Ring
2461 rdba
= rx_ring
->dma
;
2462 ew32(RDBAL
, (rdba
& DMA_32BIT_MASK
));
2463 ew32(RDBAH
, (rdba
>> 32));
2467 rx_ring
->head
= E1000_RDH
;
2468 rx_ring
->tail
= E1000_RDT
;
2470 /* Enable Receive Checksum Offload for TCP and UDP */
2471 rxcsum
= er32(RXCSUM
);
2472 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2473 rxcsum
|= E1000_RXCSUM_TUOFL
;
2476 * IPv4 payload checksum for UDP fragments must be
2477 * used in conjunction with packet-split.
2479 if (adapter
->rx_ps_pages
)
2480 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2482 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2483 /* no need to clear IPPCSE as it defaults to 0 */
2485 ew32(RXCSUM
, rxcsum
);
2488 * Enable early receives on supported devices, only takes effect when
2489 * packet size is equal or larger than the specified value (in 8 byte
2490 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2492 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2493 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2494 u32 rxdctl
= er32(RXDCTL(0));
2495 ew32(RXDCTL(0), rxdctl
| 0x3);
2496 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2498 * With jumbo frames and early-receive enabled, excessive
2499 * C4->C2 latencies result in dropped transactions.
2501 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2502 e1000e_driver_name
, 55);
2504 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2506 PM_QOS_DEFAULT_VALUE
);
2509 /* Enable Receives */
2514 * e1000_update_mc_addr_list - Update Multicast addresses
2515 * @hw: pointer to the HW structure
2516 * @mc_addr_list: array of multicast addresses to program
2517 * @mc_addr_count: number of multicast addresses to program
2518 * @rar_used_count: the first RAR register free to program
2519 * @rar_count: total number of supported Receive Address Registers
2521 * Updates the Receive Address Registers and Multicast Table Array.
2522 * The caller must have a packed mc_addr_list of multicast addresses.
2523 * The parameter rar_count will usually be hw->mac.rar_entry_count
2524 * unless there are workarounds that change this. Currently no func pointer
2525 * exists and all implementations are handled in the generic version of this
2528 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2529 u32 mc_addr_count
, u32 rar_used_count
,
2532 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2533 rar_used_count
, rar_count
);
2537 * e1000_set_multi - Multicast and Promiscuous mode set
2538 * @netdev: network interface device structure
2540 * The set_multi entry point is called whenever the multicast address
2541 * list or the network interface flags are updated. This routine is
2542 * responsible for configuring the hardware for proper multicast,
2543 * promiscuous mode, and all-multi behavior.
2545 static void e1000_set_multi(struct net_device
*netdev
)
2547 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2548 struct e1000_hw
*hw
= &adapter
->hw
;
2549 struct e1000_mac_info
*mac
= &hw
->mac
;
2550 struct dev_mc_list
*mc_ptr
;
2555 /* Check for Promiscuous and All Multicast modes */
2559 if (netdev
->flags
& IFF_PROMISC
) {
2560 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2561 rctl
&= ~E1000_RCTL_VFE
;
2563 if (netdev
->flags
& IFF_ALLMULTI
) {
2564 rctl
|= E1000_RCTL_MPE
;
2565 rctl
&= ~E1000_RCTL_UPE
;
2567 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2569 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2570 rctl
|= E1000_RCTL_VFE
;
2575 if (netdev
->mc_count
) {
2576 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2580 /* prepare a packed array of only addresses. */
2581 mc_ptr
= netdev
->mc_list
;
2583 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2586 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2588 mc_ptr
= mc_ptr
->next
;
2591 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2592 mac
->rar_entry_count
);
2596 * if we're called from probe, we might not have
2597 * anything to do here, so clear out the list
2599 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2604 * e1000_configure - configure the hardware for Rx and Tx
2605 * @adapter: private board structure
2607 static void e1000_configure(struct e1000_adapter
*adapter
)
2609 e1000_set_multi(adapter
->netdev
);
2611 e1000_restore_vlan(adapter
);
2612 e1000_init_manageability(adapter
);
2614 e1000_configure_tx(adapter
);
2615 e1000_setup_rctl(adapter
);
2616 e1000_configure_rx(adapter
);
2617 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2621 * e1000e_power_up_phy - restore link in case the phy was powered down
2622 * @adapter: address of board private structure
2624 * The phy may be powered down to save power and turn off link when the
2625 * driver is unloaded and wake on lan is not enabled (among others)
2626 * *** this routine MUST be followed by a call to e1000e_reset ***
2628 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2632 /* Just clear the power down bit to wake the phy back up */
2633 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2635 * According to the manual, the phy will retain its
2636 * settings across a power-down/up cycle
2638 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2639 mii_reg
&= ~MII_CR_POWER_DOWN
;
2640 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2643 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2647 * e1000_power_down_phy - Power down the PHY
2649 * Power down the PHY so no link is implied when interface is down
2650 * The PHY cannot be powered down is management or WoL is active
2652 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2654 struct e1000_hw
*hw
= &adapter
->hw
;
2657 /* WoL is enabled */
2661 /* non-copper PHY? */
2662 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2665 /* reset is blocked because of a SoL/IDER session */
2666 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2669 /* manageability (AMT) is enabled */
2670 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2673 /* power down the PHY */
2674 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2675 mii_reg
|= MII_CR_POWER_DOWN
;
2676 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2681 * e1000e_reset - bring the hardware into a known good state
2683 * This function boots the hardware and enables some settings that
2684 * require a configuration cycle of the hardware - those cannot be
2685 * set/changed during runtime. After reset the device needs to be
2686 * properly configured for Rx, Tx etc.
2688 void e1000e_reset(struct e1000_adapter
*adapter
)
2690 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2691 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2692 struct e1000_hw
*hw
= &adapter
->hw
;
2693 u32 tx_space
, min_tx_space
, min_rx_space
;
2694 u32 pba
= adapter
->pba
;
2697 /* reset Packet Buffer Allocation to default */
2700 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2702 * To maintain wire speed transmits, the Tx FIFO should be
2703 * large enough to accommodate two full transmit packets,
2704 * rounded up to the next 1KB and expressed in KB. Likewise,
2705 * the Rx FIFO should be large enough to accommodate at least
2706 * one full receive packet and is similarly rounded up and
2710 /* upper 16 bits has Tx packet buffer allocation size in KB */
2711 tx_space
= pba
>> 16;
2712 /* lower 16 bits has Rx packet buffer allocation size in KB */
2715 * the Tx fifo also stores 16 bytes of information about the tx
2716 * but don't include ethernet FCS because hardware appends it
2718 min_tx_space
= (adapter
->max_frame_size
+
2719 sizeof(struct e1000_tx_desc
) -
2721 min_tx_space
= ALIGN(min_tx_space
, 1024);
2722 min_tx_space
>>= 10;
2723 /* software strips receive CRC, so leave room for it */
2724 min_rx_space
= adapter
->max_frame_size
;
2725 min_rx_space
= ALIGN(min_rx_space
, 1024);
2726 min_rx_space
>>= 10;
2729 * If current Tx allocation is less than the min Tx FIFO size,
2730 * and the min Tx FIFO size is less than the current Rx FIFO
2731 * allocation, take space away from current Rx allocation
2733 if ((tx_space
< min_tx_space
) &&
2734 ((min_tx_space
- tx_space
) < pba
)) {
2735 pba
-= min_tx_space
- tx_space
;
2738 * if short on Rx space, Rx wins and must trump tx
2739 * adjustment or use Early Receive if available
2741 if ((pba
< min_rx_space
) &&
2742 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2743 /* ERT enabled in e1000_configure_rx */
2752 * flow control settings
2754 * The high water mark must be low enough to fit one full frame
2755 * (or the size used for early receive) above it in the Rx FIFO.
2756 * Set it to the lower of:
2757 * - 90% of the Rx FIFO size, and
2758 * - the full Rx FIFO size minus the early receive size (for parts
2759 * with ERT support assuming ERT set to E1000_ERT_2048), or
2760 * - the full Rx FIFO size minus one full frame
2762 if (adapter
->flags
& FLAG_HAS_ERT
)
2763 hwm
= min(((pba
<< 10) * 9 / 10),
2764 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2766 hwm
= min(((pba
<< 10) * 9 / 10),
2767 ((pba
<< 10) - adapter
->max_frame_size
));
2769 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2770 fc
->low_water
= fc
->high_water
- 8;
2772 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2773 fc
->pause_time
= 0xFFFF;
2775 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2777 fc
->current_mode
= fc
->requested_mode
;
2779 /* Allow time for pending master requests to run */
2780 mac
->ops
.reset_hw(hw
);
2783 * For parts with AMT enabled, let the firmware know
2784 * that the network interface is in control
2786 if (adapter
->flags
& FLAG_HAS_AMT
)
2787 e1000_get_hw_control(adapter
);
2791 if (mac
->ops
.init_hw(hw
))
2792 e_err("Hardware Error\n");
2794 e1000_update_mng_vlan(adapter
);
2796 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2797 ew32(VET
, ETH_P_8021Q
);
2799 e1000e_reset_adaptive(hw
);
2800 e1000_get_phy_info(hw
);
2802 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2805 * speed up time to link by disabling smart power down, ignore
2806 * the return value of this function because there is nothing
2807 * different we would do if it failed
2809 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2810 phy_data
&= ~IGP02E1000_PM_SPD
;
2811 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2815 int e1000e_up(struct e1000_adapter
*adapter
)
2817 struct e1000_hw
*hw
= &adapter
->hw
;
2819 /* hardware has been reset, we need to reload some things */
2820 e1000_configure(adapter
);
2822 clear_bit(__E1000_DOWN
, &adapter
->state
);
2824 napi_enable(&adapter
->napi
);
2825 if (adapter
->msix_entries
)
2826 e1000_configure_msix(adapter
);
2827 e1000_irq_enable(adapter
);
2829 /* fire a link change interrupt to start the watchdog */
2830 ew32(ICS
, E1000_ICS_LSC
);
2834 void e1000e_down(struct e1000_adapter
*adapter
)
2836 struct net_device
*netdev
= adapter
->netdev
;
2837 struct e1000_hw
*hw
= &adapter
->hw
;
2841 * signal that we're down so the interrupt handler does not
2842 * reschedule our watchdog timer
2844 set_bit(__E1000_DOWN
, &adapter
->state
);
2846 /* disable receives in the hardware */
2848 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2849 /* flush and sleep below */
2851 netif_tx_stop_all_queues(netdev
);
2853 /* disable transmits in the hardware */
2855 tctl
&= ~E1000_TCTL_EN
;
2857 /* flush both disables and wait for them to finish */
2861 napi_disable(&adapter
->napi
);
2862 e1000_irq_disable(adapter
);
2864 del_timer_sync(&adapter
->watchdog_timer
);
2865 del_timer_sync(&adapter
->phy_info_timer
);
2867 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2868 netif_carrier_off(netdev
);
2869 adapter
->link_speed
= 0;
2870 adapter
->link_duplex
= 0;
2872 if (!pci_channel_offline(adapter
->pdev
))
2873 e1000e_reset(adapter
);
2874 e1000_clean_tx_ring(adapter
);
2875 e1000_clean_rx_ring(adapter
);
2878 * TODO: for power management, we could drop the link and
2879 * pci_disable_device here.
2883 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2886 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2888 e1000e_down(adapter
);
2890 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2894 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2895 * @adapter: board private structure to initialize
2897 * e1000_sw_init initializes the Adapter private data structure.
2898 * Fields are initialized based on PCI device information and
2899 * OS network device settings (MTU size).
2901 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2903 struct net_device
*netdev
= adapter
->netdev
;
2905 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2906 adapter
->rx_ps_bsize0
= 128;
2907 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2908 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2910 e1000e_set_interrupt_capability(adapter
);
2912 if (e1000_alloc_queues(adapter
))
2915 /* Explicitly disable IRQ since the NIC can be in any state. */
2916 e1000_irq_disable(adapter
);
2918 set_bit(__E1000_DOWN
, &adapter
->state
);
2923 * e1000_intr_msi_test - Interrupt Handler
2924 * @irq: interrupt number
2925 * @data: pointer to a network interface device structure
2927 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
2929 struct net_device
*netdev
= data
;
2930 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2931 struct e1000_hw
*hw
= &adapter
->hw
;
2932 u32 icr
= er32(ICR
);
2934 e_dbg("%s: icr is %08X\n", netdev
->name
, icr
);
2935 if (icr
& E1000_ICR_RXSEQ
) {
2936 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
2944 * e1000_test_msi_interrupt - Returns 0 for successful test
2945 * @adapter: board private struct
2947 * code flow taken from tg3.c
2949 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
2951 struct net_device
*netdev
= adapter
->netdev
;
2952 struct e1000_hw
*hw
= &adapter
->hw
;
2955 /* poll_enable hasn't been called yet, so don't need disable */
2956 /* clear any pending events */
2959 /* free the real vector and request a test handler */
2960 e1000_free_irq(adapter
);
2961 e1000e_reset_interrupt_capability(adapter
);
2963 /* Assume that the test fails, if it succeeds then the test
2964 * MSI irq handler will unset this flag */
2965 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
2967 err
= pci_enable_msi(adapter
->pdev
);
2969 goto msi_test_failed
;
2971 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi_test
, 0,
2972 netdev
->name
, netdev
);
2974 pci_disable_msi(adapter
->pdev
);
2975 goto msi_test_failed
;
2980 e1000_irq_enable(adapter
);
2982 /* fire an unusual interrupt on the test handler */
2983 ew32(ICS
, E1000_ICS_RXSEQ
);
2987 e1000_irq_disable(adapter
);
2991 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
2992 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2994 e_info("MSI interrupt test failed!\n");
2997 free_irq(adapter
->pdev
->irq
, netdev
);
2998 pci_disable_msi(adapter
->pdev
);
3001 goto msi_test_failed
;
3003 /* okay so the test worked, restore settings */
3004 e_dbg("%s: MSI interrupt test succeeded!\n", netdev
->name
);
3006 e1000e_set_interrupt_capability(adapter
);
3007 e1000_request_irq(adapter
);
3012 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3013 * @adapter: board private struct
3015 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3017 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3022 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3025 /* disable SERR in case the MSI write causes a master abort */
3026 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3027 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3028 pci_cmd
& ~PCI_COMMAND_SERR
);
3030 err
= e1000_test_msi_interrupt(adapter
);
3032 /* restore previous setting of command word */
3033 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3039 /* EIO means MSI test failed */
3043 /* back to INTx mode */
3044 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3046 e1000_free_irq(adapter
);
3048 err
= e1000_request_irq(adapter
);
3054 * e1000_open - Called when a network interface is made active
3055 * @netdev: network interface device structure
3057 * Returns 0 on success, negative value on failure
3059 * The open entry point is called when a network interface is made
3060 * active by the system (IFF_UP). At this point all resources needed
3061 * for transmit and receive operations are allocated, the interrupt
3062 * handler is registered with the OS, the watchdog timer is started,
3063 * and the stack is notified that the interface is ready.
3065 static int e1000_open(struct net_device
*netdev
)
3067 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3068 struct e1000_hw
*hw
= &adapter
->hw
;
3071 /* disallow open during test */
3072 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3075 /* allocate transmit descriptors */
3076 err
= e1000e_setup_tx_resources(adapter
);
3080 /* allocate receive descriptors */
3081 err
= e1000e_setup_rx_resources(adapter
);
3085 e1000e_power_up_phy(adapter
);
3087 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3088 if ((adapter
->hw
.mng_cookie
.status
&
3089 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3090 e1000_update_mng_vlan(adapter
);
3093 * If AMT is enabled, let the firmware know that the network
3094 * interface is now open
3096 if (adapter
->flags
& FLAG_HAS_AMT
)
3097 e1000_get_hw_control(adapter
);
3100 * before we allocate an interrupt, we must be ready to handle it.
3101 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3102 * as soon as we call pci_request_irq, so we have to setup our
3103 * clean_rx handler before we do so.
3105 e1000_configure(adapter
);
3107 err
= e1000_request_irq(adapter
);
3112 * Work around PCIe errata with MSI interrupts causing some chipsets to
3113 * ignore e1000e MSI messages, which means we need to test our MSI
3116 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3117 err
= e1000_test_msi(adapter
);
3119 e_err("Interrupt allocation failed\n");
3124 /* From here on the code is the same as e1000e_up() */
3125 clear_bit(__E1000_DOWN
, &adapter
->state
);
3127 napi_enable(&adapter
->napi
);
3129 e1000_irq_enable(adapter
);
3131 netif_tx_start_all_queues(netdev
);
3133 /* fire a link status change interrupt to start the watchdog */
3134 ew32(ICS
, E1000_ICS_LSC
);
3139 e1000_release_hw_control(adapter
);
3140 e1000_power_down_phy(adapter
);
3141 e1000e_free_rx_resources(adapter
);
3143 e1000e_free_tx_resources(adapter
);
3145 e1000e_reset(adapter
);
3151 * e1000_close - Disables a network interface
3152 * @netdev: network interface device structure
3154 * Returns 0, this is not allowed to fail
3156 * The close entry point is called when an interface is de-activated
3157 * by the OS. The hardware is still under the drivers control, but
3158 * needs to be disabled. A global MAC reset is issued to stop the
3159 * hardware, and all transmit and receive resources are freed.
3161 static int e1000_close(struct net_device
*netdev
)
3163 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3165 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3166 e1000e_down(adapter
);
3167 e1000_power_down_phy(adapter
);
3168 e1000_free_irq(adapter
);
3170 e1000e_free_tx_resources(adapter
);
3171 e1000e_free_rx_resources(adapter
);
3174 * kill manageability vlan ID if supported, but not if a vlan with
3175 * the same ID is registered on the host OS (let 8021q kill it)
3177 if ((adapter
->hw
.mng_cookie
.status
&
3178 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3180 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3181 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3184 * If AMT is enabled, let the firmware know that the network
3185 * interface is now closed
3187 if (adapter
->flags
& FLAG_HAS_AMT
)
3188 e1000_release_hw_control(adapter
);
3193 * e1000_set_mac - Change the Ethernet Address of the NIC
3194 * @netdev: network interface device structure
3195 * @p: pointer to an address structure
3197 * Returns 0 on success, negative on failure
3199 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3201 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3202 struct sockaddr
*addr
= p
;
3204 if (!is_valid_ether_addr(addr
->sa_data
))
3205 return -EADDRNOTAVAIL
;
3207 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3208 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3210 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3212 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3213 /* activate the work around */
3214 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3217 * Hold a copy of the LAA in RAR[14] This is done so that
3218 * between the time RAR[0] gets clobbered and the time it
3219 * gets fixed (in e1000_watchdog), the actual LAA is in one
3220 * of the RARs and no incoming packets directed to this port
3221 * are dropped. Eventually the LAA will be in RAR[0] and
3224 e1000e_rar_set(&adapter
->hw
,
3225 adapter
->hw
.mac
.addr
,
3226 adapter
->hw
.mac
.rar_entry_count
- 1);
3233 * e1000e_update_phy_task - work thread to update phy
3234 * @work: pointer to our work struct
3236 * this worker thread exists because we must acquire a
3237 * semaphore to read the phy, which we could msleep while
3238 * waiting for it, and we can't msleep in a timer.
3240 static void e1000e_update_phy_task(struct work_struct
*work
)
3242 struct e1000_adapter
*adapter
= container_of(work
,
3243 struct e1000_adapter
, update_phy_task
);
3244 e1000_get_phy_info(&adapter
->hw
);
3248 * Need to wait a few seconds after link up to get diagnostic information from
3251 static void e1000_update_phy_info(unsigned long data
)
3253 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3254 schedule_work(&adapter
->update_phy_task
);
3258 * e1000e_update_stats - Update the board statistics counters
3259 * @adapter: board private structure
3261 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3263 struct e1000_hw
*hw
= &adapter
->hw
;
3264 struct pci_dev
*pdev
= adapter
->pdev
;
3267 * Prevent stats update while adapter is being reset, or if the pci
3268 * connection is down.
3270 if (adapter
->link_speed
== 0)
3272 if (pci_channel_offline(pdev
))
3275 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3276 adapter
->stats
.gprc
+= er32(GPRC
);
3277 adapter
->stats
.gorc
+= er32(GORCL
);
3278 er32(GORCH
); /* Clear gorc */
3279 adapter
->stats
.bprc
+= er32(BPRC
);
3280 adapter
->stats
.mprc
+= er32(MPRC
);
3281 adapter
->stats
.roc
+= er32(ROC
);
3283 adapter
->stats
.mpc
+= er32(MPC
);
3284 adapter
->stats
.scc
+= er32(SCC
);
3285 adapter
->stats
.ecol
+= er32(ECOL
);
3286 adapter
->stats
.mcc
+= er32(MCC
);
3287 adapter
->stats
.latecol
+= er32(LATECOL
);
3288 adapter
->stats
.dc
+= er32(DC
);
3289 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3290 adapter
->stats
.xontxc
+= er32(XONTXC
);
3291 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3292 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3293 adapter
->stats
.gptc
+= er32(GPTC
);
3294 adapter
->stats
.gotc
+= er32(GOTCL
);
3295 er32(GOTCH
); /* Clear gotc */
3296 adapter
->stats
.rnbc
+= er32(RNBC
);
3297 adapter
->stats
.ruc
+= er32(RUC
);
3299 adapter
->stats
.mptc
+= er32(MPTC
);
3300 adapter
->stats
.bptc
+= er32(BPTC
);
3302 /* used for adaptive IFS */
3304 hw
->mac
.tx_packet_delta
= er32(TPT
);
3305 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3306 hw
->mac
.collision_delta
= er32(COLC
);
3307 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3309 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3310 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3311 if (hw
->mac
.type
!= e1000_82574
)
3312 adapter
->stats
.tncrs
+= er32(TNCRS
);
3313 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3314 adapter
->stats
.tsctc
+= er32(TSCTC
);
3315 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3317 /* Fill out the OS statistics structure */
3318 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3319 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3324 * RLEC on some newer hardware can be incorrect so build
3325 * our own version based on RUC and ROC
3327 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3328 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3329 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3330 adapter
->stats
.cexterr
;
3331 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3333 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3334 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3335 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3338 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3339 adapter
->stats
.latecol
;
3340 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3341 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3342 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3344 /* Tx Dropped needs to be maintained elsewhere */
3346 /* Management Stats */
3347 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3348 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3349 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3353 * e1000_phy_read_status - Update the PHY register status snapshot
3354 * @adapter: board private structure
3356 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3358 struct e1000_hw
*hw
= &adapter
->hw
;
3359 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3362 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3363 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3364 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3365 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3366 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3367 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3368 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3369 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3370 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3371 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3373 e_warn("Error reading PHY register\n");
3376 * Do not read PHY registers if link is not up
3377 * Set values to typical power-on defaults
3379 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3380 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3381 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3383 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3384 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3386 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3387 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3389 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3393 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3395 struct e1000_hw
*hw
= &adapter
->hw
;
3396 u32 ctrl
= er32(CTRL
);
3398 /* Link status message must follow this format for user tools */
3399 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
3400 "Flow Control: %s\n",
3401 adapter
->netdev
->name
,
3402 adapter
->link_speed
,
3403 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3404 "Full Duplex" : "Half Duplex",
3405 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3407 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3408 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3411 bool e1000_has_link(struct e1000_adapter
*adapter
)
3413 struct e1000_hw
*hw
= &adapter
->hw
;
3414 bool link_active
= 0;
3418 * get_link_status is set on LSC (link status) interrupt or
3419 * Rx sequence error interrupt. get_link_status will stay
3420 * false until the check_for_link establishes link
3421 * for copper adapters ONLY
3423 switch (hw
->phy
.media_type
) {
3424 case e1000_media_type_copper
:
3425 if (hw
->mac
.get_link_status
) {
3426 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3427 link_active
= !hw
->mac
.get_link_status
;
3432 case e1000_media_type_fiber
:
3433 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3434 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
3436 case e1000_media_type_internal_serdes
:
3437 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3438 link_active
= adapter
->hw
.mac
.serdes_has_link
;
3441 case e1000_media_type_unknown
:
3445 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
3446 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
3447 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3448 e_info("Gigabit has been disabled, downgrading speed\n");
3454 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3456 /* make sure the receive unit is started */
3457 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3458 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3459 struct e1000_hw
*hw
= &adapter
->hw
;
3460 u32 rctl
= er32(RCTL
);
3461 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3462 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3467 * e1000_watchdog - Timer Call-back
3468 * @data: pointer to adapter cast into an unsigned long
3470 static void e1000_watchdog(unsigned long data
)
3472 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3474 /* Do the rest outside of interrupt context */
3475 schedule_work(&adapter
->watchdog_task
);
3477 /* TODO: make this use queue_delayed_work() */
3480 static void e1000_watchdog_task(struct work_struct
*work
)
3482 struct e1000_adapter
*adapter
= container_of(work
,
3483 struct e1000_adapter
, watchdog_task
);
3484 struct net_device
*netdev
= adapter
->netdev
;
3485 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3486 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
3487 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3488 struct e1000_hw
*hw
= &adapter
->hw
;
3492 link
= e1000_has_link(adapter
);
3493 if ((netif_carrier_ok(netdev
)) && link
) {
3494 e1000e_enable_receives(adapter
);
3498 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3499 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3500 e1000_update_mng_vlan(adapter
);
3503 if (!netif_carrier_ok(netdev
)) {
3505 /* update snapshot of PHY registers on LSC */
3506 e1000_phy_read_status(adapter
);
3507 mac
->ops
.get_link_up_info(&adapter
->hw
,
3508 &adapter
->link_speed
,
3509 &adapter
->link_duplex
);
3510 e1000_print_link_info(adapter
);
3512 * On supported PHYs, check for duplex mismatch only
3513 * if link has autonegotiated at 10/100 half
3515 if ((hw
->phy
.type
== e1000_phy_igp_3
||
3516 hw
->phy
.type
== e1000_phy_bm
) &&
3517 (hw
->mac
.autoneg
== true) &&
3518 (adapter
->link_speed
== SPEED_10
||
3519 adapter
->link_speed
== SPEED_100
) &&
3520 (adapter
->link_duplex
== HALF_DUPLEX
)) {
3523 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
3525 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
3526 e_info("Autonegotiated half duplex but"
3527 " link partner cannot autoneg. "
3528 " Try forcing full duplex if "
3529 "link gets many collisions.\n");
3533 * tweak tx_queue_len according to speed/duplex
3534 * and adjust the timeout factor
3536 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3537 adapter
->tx_timeout_factor
= 1;
3538 switch (adapter
->link_speed
) {
3541 netdev
->tx_queue_len
= 10;
3542 adapter
->tx_timeout_factor
= 16;
3546 netdev
->tx_queue_len
= 100;
3547 /* maybe add some timeout factor ? */
3552 * workaround: re-program speed mode bit after
3555 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3558 tarc0
= er32(TARC(0));
3559 tarc0
&= ~SPEED_MODE_BIT
;
3560 ew32(TARC(0), tarc0
);
3564 * disable TSO for pcie and 10/100 speeds, to avoid
3565 * some hardware issues
3567 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3568 switch (adapter
->link_speed
) {
3571 e_info("10/100 speed: disabling TSO\n");
3572 netdev
->features
&= ~NETIF_F_TSO
;
3573 netdev
->features
&= ~NETIF_F_TSO6
;
3576 netdev
->features
|= NETIF_F_TSO
;
3577 netdev
->features
|= NETIF_F_TSO6
;
3586 * enable transmits in the hardware, need to do this
3587 * after setting TARC(0)
3590 tctl
|= E1000_TCTL_EN
;
3594 * Perform any post-link-up configuration before
3595 * reporting link up.
3597 if (phy
->ops
.cfg_on_link_up
)
3598 phy
->ops
.cfg_on_link_up(hw
);
3600 netif_carrier_on(netdev
);
3601 netif_tx_wake_all_queues(netdev
);
3603 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3604 mod_timer(&adapter
->phy_info_timer
,
3605 round_jiffies(jiffies
+ 2 * HZ
));
3608 if (netif_carrier_ok(netdev
)) {
3609 adapter
->link_speed
= 0;
3610 adapter
->link_duplex
= 0;
3611 /* Link status message must follow this format */
3612 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
3613 adapter
->netdev
->name
);
3614 netif_carrier_off(netdev
);
3615 netif_tx_stop_all_queues(netdev
);
3616 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3617 mod_timer(&adapter
->phy_info_timer
,
3618 round_jiffies(jiffies
+ 2 * HZ
));
3620 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3621 schedule_work(&adapter
->reset_task
);
3626 e1000e_update_stats(adapter
);
3628 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3629 adapter
->tpt_old
= adapter
->stats
.tpt
;
3630 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3631 adapter
->colc_old
= adapter
->stats
.colc
;
3633 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3634 adapter
->gorc_old
= adapter
->stats
.gorc
;
3635 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3636 adapter
->gotc_old
= adapter
->stats
.gotc
;
3638 e1000e_update_adaptive(&adapter
->hw
);
3640 if (!netif_carrier_ok(netdev
)) {
3641 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3645 * We've lost link, so the controller stops DMA,
3646 * but we've got queued Tx work that's never going
3647 * to get done, so reset controller to flush Tx.
3648 * (Do the reset outside of interrupt context).
3650 adapter
->tx_timeout_count
++;
3651 schedule_work(&adapter
->reset_task
);
3655 /* Cause software interrupt to ensure Rx ring is cleaned */
3656 if (adapter
->msix_entries
)
3657 ew32(ICS
, adapter
->rx_ring
->ims_val
);
3659 ew32(ICS
, E1000_ICS_RXDMT0
);
3661 /* Force detection of hung controller every watchdog period */
3662 adapter
->detect_tx_hung
= 1;
3665 * With 82571 controllers, LAA may be overwritten due to controller
3666 * reset from the other port. Set the appropriate LAA in RAR[0]
3668 if (e1000e_get_laa_state_82571(hw
))
3669 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3671 /* Reset the timer */
3672 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3673 mod_timer(&adapter
->watchdog_timer
,
3674 round_jiffies(jiffies
+ 2 * HZ
));
3677 #define E1000_TX_FLAGS_CSUM 0x00000001
3678 #define E1000_TX_FLAGS_VLAN 0x00000002
3679 #define E1000_TX_FLAGS_TSO 0x00000004
3680 #define E1000_TX_FLAGS_IPV4 0x00000008
3681 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3682 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3684 static int e1000_tso(struct e1000_adapter
*adapter
,
3685 struct sk_buff
*skb
)
3687 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3688 struct e1000_context_desc
*context_desc
;
3689 struct e1000_buffer
*buffer_info
;
3692 u16 ipcse
= 0, tucse
, mss
;
3693 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3696 if (skb_is_gso(skb
)) {
3697 if (skb_header_cloned(skb
)) {
3698 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3703 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3704 mss
= skb_shinfo(skb
)->gso_size
;
3705 if (skb
->protocol
== htons(ETH_P_IP
)) {
3706 struct iphdr
*iph
= ip_hdr(skb
);
3709 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3713 cmd_length
= E1000_TXD_CMD_IP
;
3714 ipcse
= skb_transport_offset(skb
) - 1;
3715 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3716 ipv6_hdr(skb
)->payload_len
= 0;
3717 tcp_hdr(skb
)->check
=
3718 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3719 &ipv6_hdr(skb
)->daddr
,
3723 ipcss
= skb_network_offset(skb
);
3724 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3725 tucss
= skb_transport_offset(skb
);
3726 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3729 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3730 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3732 i
= tx_ring
->next_to_use
;
3733 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3734 buffer_info
= &tx_ring
->buffer_info
[i
];
3736 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3737 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3738 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3739 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3740 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3741 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3742 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3743 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3744 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3746 buffer_info
->time_stamp
= jiffies
;
3747 buffer_info
->next_to_watch
= i
;
3750 if (i
== tx_ring
->count
)
3752 tx_ring
->next_to_use
= i
;
3760 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3762 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3763 struct e1000_context_desc
*context_desc
;
3764 struct e1000_buffer
*buffer_info
;
3767 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
3769 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
3772 switch (skb
->protocol
) {
3773 case cpu_to_be16(ETH_P_IP
):
3774 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3775 cmd_len
|= E1000_TXD_CMD_TCP
;
3777 case cpu_to_be16(ETH_P_IPV6
):
3778 /* XXX not handling all IPV6 headers */
3779 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3780 cmd_len
|= E1000_TXD_CMD_TCP
;
3783 if (unlikely(net_ratelimit()))
3784 e_warn("checksum_partial proto=%x!\n", skb
->protocol
);
3788 css
= skb_transport_offset(skb
);
3790 i
= tx_ring
->next_to_use
;
3791 buffer_info
= &tx_ring
->buffer_info
[i
];
3792 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3794 context_desc
->lower_setup
.ip_config
= 0;
3795 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3796 context_desc
->upper_setup
.tcp_fields
.tucso
=
3797 css
+ skb
->csum_offset
;
3798 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3799 context_desc
->tcp_seg_setup
.data
= 0;
3800 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
3802 buffer_info
->time_stamp
= jiffies
;
3803 buffer_info
->next_to_watch
= i
;
3806 if (i
== tx_ring
->count
)
3808 tx_ring
->next_to_use
= i
;
3813 #define E1000_MAX_PER_TXD 8192
3814 #define E1000_MAX_TXD_PWR 12
3816 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3817 struct sk_buff
*skb
, unsigned int first
,
3818 unsigned int max_per_txd
, unsigned int nr_frags
,
3821 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3822 struct e1000_buffer
*buffer_info
;
3823 unsigned int len
= skb
->len
- skb
->data_len
;
3824 unsigned int offset
= 0, size
, count
= 0, i
;
3827 i
= tx_ring
->next_to_use
;
3830 buffer_info
= &tx_ring
->buffer_info
[i
];
3831 size
= min(len
, max_per_txd
);
3833 /* Workaround for premature desc write-backs
3834 * in TSO mode. Append 4-byte sentinel desc */
3835 if (mss
&& !nr_frags
&& size
== len
&& size
> 8)
3838 buffer_info
->length
= size
;
3839 /* set time_stamp *before* dma to help avoid a possible race */
3840 buffer_info
->time_stamp
= jiffies
;
3842 pci_map_single(adapter
->pdev
,
3846 if (pci_dma_mapping_error(adapter
->pdev
, buffer_info
->dma
)) {
3847 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3848 adapter
->tx_dma_failed
++;
3851 buffer_info
->next_to_watch
= i
;
3857 if (i
== tx_ring
->count
)
3861 for (f
= 0; f
< nr_frags
; f
++) {
3862 struct skb_frag_struct
*frag
;
3864 frag
= &skb_shinfo(skb
)->frags
[f
];
3866 offset
= frag
->page_offset
;
3869 buffer_info
= &tx_ring
->buffer_info
[i
];
3870 size
= min(len
, max_per_txd
);
3871 /* Workaround for premature desc write-backs
3872 * in TSO mode. Append 4-byte sentinel desc */
3873 if (mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8)
3876 buffer_info
->length
= size
;
3877 buffer_info
->time_stamp
= jiffies
;
3879 pci_map_page(adapter
->pdev
,
3884 if (pci_dma_mapping_error(adapter
->pdev
,
3885 buffer_info
->dma
)) {
3886 dev_err(&adapter
->pdev
->dev
,
3887 "TX DMA page map failed\n");
3888 adapter
->tx_dma_failed
++;
3892 buffer_info
->next_to_watch
= i
;
3899 if (i
== tx_ring
->count
)
3905 i
= tx_ring
->count
- 1;
3909 tx_ring
->buffer_info
[i
].skb
= skb
;
3910 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3915 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3916 int tx_flags
, int count
)
3918 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3919 struct e1000_tx_desc
*tx_desc
= NULL
;
3920 struct e1000_buffer
*buffer_info
;
3921 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3924 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3925 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3927 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3929 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3930 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3933 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3934 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3935 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3938 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3939 txd_lower
|= E1000_TXD_CMD_VLE
;
3940 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3943 i
= tx_ring
->next_to_use
;
3946 buffer_info
= &tx_ring
->buffer_info
[i
];
3947 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3948 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3949 tx_desc
->lower
.data
=
3950 cpu_to_le32(txd_lower
| buffer_info
->length
);
3951 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3954 if (i
== tx_ring
->count
)
3958 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3961 * Force memory writes to complete before letting h/w
3962 * know there are new descriptors to fetch. (Only
3963 * applicable for weak-ordered memory model archs,
3968 tx_ring
->next_to_use
= i
;
3969 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3971 * we need this if more than one processor can write to our tail
3972 * at a time, it synchronizes IO on IA64/Altix systems
3977 #define MINIMUM_DHCP_PACKET_SIZE 282
3978 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3979 struct sk_buff
*skb
)
3981 struct e1000_hw
*hw
= &adapter
->hw
;
3984 if (vlan_tx_tag_present(skb
)) {
3985 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3986 && (adapter
->hw
.mng_cookie
.status
&
3987 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3991 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3994 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
3998 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4001 if (ip
->protocol
!= IPPROTO_UDP
)
4004 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4005 if (ntohs(udp
->dest
) != 67)
4008 offset
= (u8
*)udp
+ 8 - skb
->data
;
4009 length
= skb
->len
- offset
;
4010 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4016 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4018 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4020 netif_stop_queue(netdev
);
4022 * Herbert's original patch had:
4023 * smp_mb__after_netif_stop_queue();
4024 * but since that doesn't exist yet, just open code it.
4029 * We need to check again in a case another CPU has just
4030 * made room available.
4032 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4036 netif_start_queue(netdev
);
4037 ++adapter
->restart_queue
;
4041 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4043 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4045 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4047 return __e1000_maybe_stop_tx(netdev
, size
);
4050 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4051 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
4053 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4054 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4056 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4057 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4058 unsigned int tx_flags
= 0;
4059 unsigned int len
= skb
->len
- skb
->data_len
;
4060 unsigned int nr_frags
;
4066 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4067 dev_kfree_skb_any(skb
);
4068 return NETDEV_TX_OK
;
4071 if (skb
->len
<= 0) {
4072 dev_kfree_skb_any(skb
);
4073 return NETDEV_TX_OK
;
4076 mss
= skb_shinfo(skb
)->gso_size
;
4078 * The controller does a simple calculation to
4079 * make sure there is enough room in the FIFO before
4080 * initiating the DMA for each buffer. The calc is:
4081 * 4 = ceil(buffer len/mss). To make sure we don't
4082 * overrun the FIFO, adjust the max buffer len if mss
4087 max_per_txd
= min(mss
<< 2, max_per_txd
);
4088 max_txd_pwr
= fls(max_per_txd
) - 1;
4091 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4092 * points to just header, pull a few bytes of payload from
4093 * frags into skb->data
4095 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4097 * we do this workaround for ES2LAN, but it is un-necessary,
4098 * avoiding it could save a lot of cycles
4100 if (skb
->data_len
&& (hdr_len
== len
)) {
4101 unsigned int pull_size
;
4103 pull_size
= min((unsigned int)4, skb
->data_len
);
4104 if (!__pskb_pull_tail(skb
, pull_size
)) {
4105 e_err("__pskb_pull_tail failed.\n");
4106 dev_kfree_skb_any(skb
);
4107 return NETDEV_TX_OK
;
4109 len
= skb
->len
- skb
->data_len
;
4113 /* reserve a descriptor for the offload context */
4114 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4118 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4120 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4121 for (f
= 0; f
< nr_frags
; f
++)
4122 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4125 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4126 e1000_transfer_dhcp_info(adapter
, skb
);
4129 * need: count + 2 desc gap to keep tail from touching
4130 * head, otherwise try next time
4132 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4133 return NETDEV_TX_BUSY
;
4135 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4136 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4137 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4140 first
= tx_ring
->next_to_use
;
4142 tso
= e1000_tso(adapter
, skb
);
4144 dev_kfree_skb_any(skb
);
4145 return NETDEV_TX_OK
;
4149 tx_flags
|= E1000_TX_FLAGS_TSO
;
4150 else if (e1000_tx_csum(adapter
, skb
))
4151 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4154 * Old method was to assume IPv4 packet by default if TSO was enabled.
4155 * 82571 hardware supports TSO capabilities for IPv6 as well...
4156 * no longer assume, we must.
4158 if (skb
->protocol
== htons(ETH_P_IP
))
4159 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4161 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4163 /* handle pci_map_single() error in e1000_tx_map */
4164 dev_kfree_skb_any(skb
);
4165 return NETDEV_TX_OK
;
4168 e1000_tx_queue(adapter
, tx_flags
, count
);
4170 netdev
->trans_start
= jiffies
;
4172 /* Make sure there is space in the ring for the next send. */
4173 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4175 return NETDEV_TX_OK
;
4179 * e1000_tx_timeout - Respond to a Tx Hang
4180 * @netdev: network interface device structure
4182 static void e1000_tx_timeout(struct net_device
*netdev
)
4184 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4186 /* Do the reset outside of interrupt context */
4187 adapter
->tx_timeout_count
++;
4188 schedule_work(&adapter
->reset_task
);
4191 static void e1000_reset_task(struct work_struct
*work
)
4193 struct e1000_adapter
*adapter
;
4194 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4196 e1000e_reinit_locked(adapter
);
4200 * e1000_get_stats - Get System Network Statistics
4201 * @netdev: network interface device structure
4203 * Returns the address of the device statistics structure.
4204 * The statistics are actually updated from the timer callback.
4206 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4208 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4210 /* only return the current stats */
4211 return &adapter
->net_stats
;
4215 * e1000_change_mtu - Change the Maximum Transfer Unit
4216 * @netdev: network interface device structure
4217 * @new_mtu: new value for maximum frame size
4219 * Returns 0 on success, negative on failure
4221 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4223 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4224 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4226 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4227 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
4228 e_err("Invalid MTU setting\n");
4232 /* Jumbo frame size limits */
4233 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
4234 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4235 e_err("Jumbo Frames not supported.\n");
4238 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
4239 e_err("Jumbo Frames not supported.\n");
4244 #define MAX_STD_JUMBO_FRAME_SIZE 9234
4245 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
4246 e_err("MTU > 9216 not supported.\n");
4250 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4252 /* e1000e_down has a dependency on max_frame_size */
4253 adapter
->max_frame_size
= max_frame
;
4254 if (netif_running(netdev
))
4255 e1000e_down(adapter
);
4258 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4259 * means we reserve 2 more, this pushes us to allocate from the next
4261 * i.e. RXBUFFER_2048 --> size-4096 slab
4262 * However with the new *_jumbo_rx* routines, jumbo receives will use
4266 if (max_frame
<= 256)
4267 adapter
->rx_buffer_len
= 256;
4268 else if (max_frame
<= 512)
4269 adapter
->rx_buffer_len
= 512;
4270 else if (max_frame
<= 1024)
4271 adapter
->rx_buffer_len
= 1024;
4272 else if (max_frame
<= 2048)
4273 adapter
->rx_buffer_len
= 2048;
4275 adapter
->rx_buffer_len
= 4096;
4277 /* adjust allocation if LPE protects us, and we aren't using SBP */
4278 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4279 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4280 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4283 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4284 netdev
->mtu
= new_mtu
;
4286 if (netif_running(netdev
))
4289 e1000e_reset(adapter
);
4291 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4296 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4299 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4300 struct mii_ioctl_data
*data
= if_mii(ifr
);
4302 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4307 data
->phy_id
= adapter
->hw
.phy
.addr
;
4310 if (!capable(CAP_NET_ADMIN
))
4312 switch (data
->reg_num
& 0x1F) {
4314 data
->val_out
= adapter
->phy_regs
.bmcr
;
4317 data
->val_out
= adapter
->phy_regs
.bmsr
;
4320 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4323 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4326 data
->val_out
= adapter
->phy_regs
.advertise
;
4329 data
->val_out
= adapter
->phy_regs
.lpa
;
4332 data
->val_out
= adapter
->phy_regs
.expansion
;
4335 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4338 data
->val_out
= adapter
->phy_regs
.stat1000
;
4341 data
->val_out
= adapter
->phy_regs
.estatus
;
4354 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4360 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4366 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4368 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4369 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4370 struct e1000_hw
*hw
= &adapter
->hw
;
4371 u32 ctrl
, ctrl_ext
, rctl
, status
;
4372 u32 wufc
= adapter
->wol
;
4375 netif_device_detach(netdev
);
4377 if (netif_running(netdev
)) {
4378 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4379 e1000e_down(adapter
);
4380 e1000_free_irq(adapter
);
4382 e1000e_reset_interrupt_capability(adapter
);
4384 retval
= pci_save_state(pdev
);
4388 status
= er32(STATUS
);
4389 if (status
& E1000_STATUS_LU
)
4390 wufc
&= ~E1000_WUFC_LNKC
;
4393 e1000_setup_rctl(adapter
);
4394 e1000_set_multi(netdev
);
4396 /* turn on all-multi mode if wake on multicast is enabled */
4397 if (wufc
& E1000_WUFC_MC
) {
4399 rctl
|= E1000_RCTL_MPE
;
4404 /* advertise wake from D3Cold */
4405 #define E1000_CTRL_ADVD3WUC 0x00100000
4406 /* phy power management enable */
4407 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4408 ctrl
|= E1000_CTRL_ADVD3WUC
|
4409 E1000_CTRL_EN_PHY_PWR_MGMT
;
4412 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
4413 adapter
->hw
.phy
.media_type
==
4414 e1000_media_type_internal_serdes
) {
4415 /* keep the laser running in D3 */
4416 ctrl_ext
= er32(CTRL_EXT
);
4417 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4418 ew32(CTRL_EXT
, ctrl_ext
);
4421 if (adapter
->flags
& FLAG_IS_ICH
)
4422 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
4424 /* Allow time for pending master requests to run */
4425 e1000e_disable_pcie_master(&adapter
->hw
);
4427 ew32(WUC
, E1000_WUC_PME_EN
);
4429 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4430 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4434 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4435 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4438 /* make sure adapter isn't asleep if manageability is enabled */
4439 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
) {
4440 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4441 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4444 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
4445 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
4448 * Release control of h/w to f/w. If f/w is AMT enabled, this
4449 * would have already happened in close and is redundant.
4451 e1000_release_hw_control(adapter
);
4453 pci_disable_device(pdev
);
4456 * The pci-e switch on some quad port adapters will report a
4457 * correctable error when the MAC transitions from D0 to D3. To
4458 * prevent this we need to mask off the correctable errors on the
4459 * downstream port of the pci-e switch.
4461 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
4462 struct pci_dev
*us_dev
= pdev
->bus
->self
;
4463 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
4466 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
4467 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
4468 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
4470 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4472 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
4474 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4480 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
4486 * 82573 workaround - disable L1 ASPM on mobile chipsets
4488 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4489 * resulting in lost data or garbage information on the pci-e link
4490 * level. This could result in (false) bad EEPROM checksum errors,
4491 * long ping times (up to 2s) or even a system freeze/hang.
4493 * Unfortunately this feature saves about 1W power consumption when
4496 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
4497 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
4499 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
4501 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
4506 static int e1000_resume(struct pci_dev
*pdev
)
4508 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4509 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4510 struct e1000_hw
*hw
= &adapter
->hw
;
4513 pci_set_power_state(pdev
, PCI_D0
);
4514 pci_restore_state(pdev
);
4515 e1000e_disable_l1aspm(pdev
);
4517 err
= pci_enable_device_mem(pdev
);
4520 "Cannot enable PCI device from suspend\n");
4524 pci_set_master(pdev
);
4526 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4527 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4529 e1000e_set_interrupt_capability(adapter
);
4530 if (netif_running(netdev
)) {
4531 err
= e1000_request_irq(adapter
);
4536 e1000e_power_up_phy(adapter
);
4537 e1000e_reset(adapter
);
4540 e1000_init_manageability(adapter
);
4542 if (netif_running(netdev
))
4545 netif_device_attach(netdev
);
4548 * If the controller has AMT, do not set DRV_LOAD until the interface
4549 * is up. For all other cases, let the f/w know that the h/w is now
4550 * under the control of the driver.
4552 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4553 e1000_get_hw_control(adapter
);
4559 static void e1000_shutdown(struct pci_dev
*pdev
)
4561 e1000_suspend(pdev
, PMSG_SUSPEND
);
4564 #ifdef CONFIG_NET_POLL_CONTROLLER
4566 * Polling 'interrupt' - used by things like netconsole to send skbs
4567 * without having to re-enable interrupts. It's not called while
4568 * the interrupt routine is executing.
4570 static void e1000_netpoll(struct net_device
*netdev
)
4572 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4574 disable_irq(adapter
->pdev
->irq
);
4575 e1000_intr(adapter
->pdev
->irq
, netdev
);
4577 enable_irq(adapter
->pdev
->irq
);
4582 * e1000_io_error_detected - called when PCI error is detected
4583 * @pdev: Pointer to PCI device
4584 * @state: The current pci connection state
4586 * This function is called after a PCI bus error affecting
4587 * this device has been detected.
4589 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4590 pci_channel_state_t state
)
4592 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4593 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4595 netif_device_detach(netdev
);
4597 if (netif_running(netdev
))
4598 e1000e_down(adapter
);
4599 pci_disable_device(pdev
);
4601 /* Request a slot slot reset. */
4602 return PCI_ERS_RESULT_NEED_RESET
;
4606 * e1000_io_slot_reset - called after the pci bus has been reset.
4607 * @pdev: Pointer to PCI device
4609 * Restart the card from scratch, as if from a cold-boot. Implementation
4610 * resembles the first-half of the e1000_resume routine.
4612 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4614 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4615 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4616 struct e1000_hw
*hw
= &adapter
->hw
;
4619 e1000e_disable_l1aspm(pdev
);
4620 err
= pci_enable_device_mem(pdev
);
4623 "Cannot re-enable PCI device after reset.\n");
4624 return PCI_ERS_RESULT_DISCONNECT
;
4626 pci_set_master(pdev
);
4627 pci_restore_state(pdev
);
4629 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4630 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4632 e1000e_reset(adapter
);
4635 return PCI_ERS_RESULT_RECOVERED
;
4639 * e1000_io_resume - called when traffic can start flowing again.
4640 * @pdev: Pointer to PCI device
4642 * This callback is called when the error recovery driver tells us that
4643 * its OK to resume normal operation. Implementation resembles the
4644 * second-half of the e1000_resume routine.
4646 static void e1000_io_resume(struct pci_dev
*pdev
)
4648 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4649 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4651 e1000_init_manageability(adapter
);
4653 if (netif_running(netdev
)) {
4654 if (e1000e_up(adapter
)) {
4656 "can't bring device back up after reset\n");
4661 netif_device_attach(netdev
);
4664 * If the controller has AMT, do not set DRV_LOAD until the interface
4665 * is up. For all other cases, let the f/w know that the h/w is now
4666 * under the control of the driver.
4668 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4669 e1000_get_hw_control(adapter
);
4673 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4675 struct e1000_hw
*hw
= &adapter
->hw
;
4676 struct net_device
*netdev
= adapter
->netdev
;
4679 /* print bus type/speed/width info */
4680 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4682 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4686 e_info("Intel(R) PRO/%s Network Connection\n",
4687 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4688 e1000e_read_pba_num(hw
, &pba_num
);
4689 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4690 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4693 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4695 struct e1000_hw
*hw
= &adapter
->hw
;
4699 if (hw
->mac
.type
!= e1000_82573
)
4702 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4703 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
4704 /* Deep Smart Power Down (DSPD) */
4705 dev_warn(&adapter
->pdev
->dev
,
4706 "Warning: detected DSPD enabled in EEPROM\n");
4709 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4710 if (!ret_val
&& (le16_to_cpu(buf
) & (3 << 2))) {
4712 dev_warn(&adapter
->pdev
->dev
,
4713 "Warning: detected ASPM enabled in EEPROM\n");
4717 static const struct net_device_ops e1000e_netdev_ops
= {
4718 .ndo_open
= e1000_open
,
4719 .ndo_stop
= e1000_close
,
4720 .ndo_start_xmit
= e1000_xmit_frame
,
4721 .ndo_get_stats
= e1000_get_stats
,
4722 .ndo_set_multicast_list
= e1000_set_multi
,
4723 .ndo_set_mac_address
= e1000_set_mac
,
4724 .ndo_change_mtu
= e1000_change_mtu
,
4725 .ndo_do_ioctl
= e1000_ioctl
,
4726 .ndo_tx_timeout
= e1000_tx_timeout
,
4727 .ndo_validate_addr
= eth_validate_addr
,
4729 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
4730 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
4731 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
4732 #ifdef CONFIG_NET_POLL_CONTROLLER
4733 .ndo_poll_controller
= e1000_netpoll
,
4738 * e1000_probe - Device Initialization Routine
4739 * @pdev: PCI device information struct
4740 * @ent: entry in e1000_pci_tbl
4742 * Returns 0 on success, negative on failure
4744 * e1000_probe initializes an adapter identified by a pci_dev structure.
4745 * The OS initialization, configuring of the adapter private structure,
4746 * and a hardware reset occur.
4748 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4749 const struct pci_device_id
*ent
)
4751 struct net_device
*netdev
;
4752 struct e1000_adapter
*adapter
;
4753 struct e1000_hw
*hw
;
4754 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4755 resource_size_t mmio_start
, mmio_len
;
4756 resource_size_t flash_start
, flash_len
;
4758 static int cards_found
;
4759 int i
, err
, pci_using_dac
;
4760 u16 eeprom_data
= 0;
4761 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4763 e1000e_disable_l1aspm(pdev
);
4765 err
= pci_enable_device_mem(pdev
);
4770 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
4772 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
4776 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
4778 err
= pci_set_consistent_dma_mask(pdev
,
4781 dev_err(&pdev
->dev
, "No usable DMA "
4782 "configuration, aborting\n");
4788 err
= pci_request_selected_regions_exclusive(pdev
,
4789 pci_select_bars(pdev
, IORESOURCE_MEM
),
4790 e1000e_driver_name
);
4794 pci_set_master(pdev
);
4795 /* PCI config space info */
4796 err
= pci_save_state(pdev
);
4798 goto err_alloc_etherdev
;
4801 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4803 goto err_alloc_etherdev
;
4805 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4807 pci_set_drvdata(pdev
, netdev
);
4808 adapter
= netdev_priv(netdev
);
4810 adapter
->netdev
= netdev
;
4811 adapter
->pdev
= pdev
;
4813 adapter
->pba
= ei
->pba
;
4814 adapter
->flags
= ei
->flags
;
4815 adapter
->flags2
= ei
->flags2
;
4816 adapter
->hw
.adapter
= adapter
;
4817 adapter
->hw
.mac
.type
= ei
->mac
;
4818 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4820 mmio_start
= pci_resource_start(pdev
, 0);
4821 mmio_len
= pci_resource_len(pdev
, 0);
4824 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4825 if (!adapter
->hw
.hw_addr
)
4828 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4829 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4830 flash_start
= pci_resource_start(pdev
, 1);
4831 flash_len
= pci_resource_len(pdev
, 1);
4832 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4833 if (!adapter
->hw
.flash_address
)
4837 /* construct the net_device struct */
4838 netdev
->netdev_ops
= &e1000e_netdev_ops
;
4839 e1000e_set_ethtool_ops(netdev
);
4840 netdev
->watchdog_timeo
= 5 * HZ
;
4841 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4842 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4844 netdev
->mem_start
= mmio_start
;
4845 netdev
->mem_end
= mmio_start
+ mmio_len
;
4847 adapter
->bd_number
= cards_found
++;
4849 e1000e_check_options(adapter
);
4851 /* setup adapter struct */
4852 err
= e1000_sw_init(adapter
);
4858 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4859 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4860 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4862 err
= ei
->get_variants(adapter
);
4866 if ((adapter
->flags
& FLAG_IS_ICH
) &&
4867 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
4868 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
4870 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4872 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4874 /* Copper options */
4875 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4876 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4877 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4878 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4881 if (e1000_check_reset_block(&adapter
->hw
))
4882 e_info("PHY reset is blocked due to SOL/IDER session.\n");
4884 netdev
->features
= NETIF_F_SG
|
4886 NETIF_F_HW_VLAN_TX
|
4889 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4890 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4892 netdev
->features
|= NETIF_F_TSO
;
4893 netdev
->features
|= NETIF_F_TSO6
;
4895 netdev
->vlan_features
|= NETIF_F_TSO
;
4896 netdev
->vlan_features
|= NETIF_F_TSO6
;
4897 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4898 netdev
->vlan_features
|= NETIF_F_SG
;
4901 netdev
->features
|= NETIF_F_HIGHDMA
;
4903 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4904 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4907 * before reading the NVM, reset the controller to
4908 * put the device in a known good starting state
4910 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4913 * systems with ASPM and others may see the checksum fail on the first
4914 * attempt. Let's give it a few tries
4917 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4920 e_err("The NVM Checksum Is Not Valid\n");
4926 e1000_eeprom_checks(adapter
);
4928 /* copy the MAC address out of the NVM */
4929 if (e1000e_read_mac_addr(&adapter
->hw
))
4930 e_err("NVM Read Error while reading MAC address\n");
4932 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4933 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4935 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4936 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
4941 init_timer(&adapter
->watchdog_timer
);
4942 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4943 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4945 init_timer(&adapter
->phy_info_timer
);
4946 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4947 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4949 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4950 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4951 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
4952 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
4954 /* Initialize link parameters. User can change them with ethtool */
4955 adapter
->hw
.mac
.autoneg
= 1;
4956 adapter
->fc_autoneg
= 1;
4957 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
4958 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
4959 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4961 /* ring size defaults */
4962 adapter
->rx_ring
->count
= 256;
4963 adapter
->tx_ring
->count
= 256;
4966 * Initial Wake on LAN setting - If APM wake is enabled in
4967 * the EEPROM, enable the ACPI Magic Packet filter
4969 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4970 /* APME bit in EEPROM is mapped to WUC.APME */
4971 eeprom_data
= er32(WUC
);
4972 eeprom_apme_mask
= E1000_WUC_APME
;
4973 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
4974 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
4975 (adapter
->hw
.bus
.func
== 1))
4976 e1000_read_nvm(&adapter
->hw
,
4977 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
4979 e1000_read_nvm(&adapter
->hw
,
4980 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
4983 /* fetch WoL from EEPROM */
4984 if (eeprom_data
& eeprom_apme_mask
)
4985 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
4988 * now that we have the eeprom settings, apply the special cases
4989 * where the eeprom may be wrong or the board simply won't support
4990 * wake on lan on a particular port
4992 if (!(adapter
->flags
& FLAG_HAS_WOL
))
4993 adapter
->eeprom_wol
= 0;
4995 /* initialize the wol settings based on the eeprom settings */
4996 adapter
->wol
= adapter
->eeprom_wol
;
4997 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
4999 /* save off EEPROM version number */
5000 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
5002 /* reset the hardware with the new settings */
5003 e1000e_reset(adapter
);
5006 * If the controller has AMT, do not set DRV_LOAD until the interface
5007 * is up. For all other cases, let the f/w know that the h/w is now
5008 * under the control of the driver.
5010 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5011 e1000_get_hw_control(adapter
);
5013 /* tell the stack to leave us alone until e1000_open() is called */
5014 netif_carrier_off(netdev
);
5015 netif_tx_stop_all_queues(netdev
);
5017 strcpy(netdev
->name
, "eth%d");
5018 err
= register_netdev(netdev
);
5022 e1000_print_device_info(adapter
);
5027 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5028 e1000_release_hw_control(adapter
);
5030 if (!e1000_check_reset_block(&adapter
->hw
))
5031 e1000_phy_hw_reset(&adapter
->hw
);
5034 kfree(adapter
->tx_ring
);
5035 kfree(adapter
->rx_ring
);
5037 if (adapter
->hw
.flash_address
)
5038 iounmap(adapter
->hw
.flash_address
);
5039 e1000e_reset_interrupt_capability(adapter
);
5041 iounmap(adapter
->hw
.hw_addr
);
5043 free_netdev(netdev
);
5045 pci_release_selected_regions(pdev
,
5046 pci_select_bars(pdev
, IORESOURCE_MEM
));
5049 pci_disable_device(pdev
);
5054 * e1000_remove - Device Removal Routine
5055 * @pdev: PCI device information struct
5057 * e1000_remove is called by the PCI subsystem to alert the driver
5058 * that it should release a PCI device. The could be caused by a
5059 * Hot-Plug event, or because the driver is going to be removed from
5062 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5064 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5065 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5068 * flush_scheduled work may reschedule our watchdog task, so
5069 * explicitly disable watchdog tasks from being rescheduled
5071 set_bit(__E1000_DOWN
, &adapter
->state
);
5072 del_timer_sync(&adapter
->watchdog_timer
);
5073 del_timer_sync(&adapter
->phy_info_timer
);
5075 flush_scheduled_work();
5078 * Release control of h/w to f/w. If f/w is AMT enabled, this
5079 * would have already happened in close and is redundant.
5081 e1000_release_hw_control(adapter
);
5083 unregister_netdev(netdev
);
5085 if (!e1000_check_reset_block(&adapter
->hw
))
5086 e1000_phy_hw_reset(&adapter
->hw
);
5088 e1000e_reset_interrupt_capability(adapter
);
5089 kfree(adapter
->tx_ring
);
5090 kfree(adapter
->rx_ring
);
5092 iounmap(adapter
->hw
.hw_addr
);
5093 if (adapter
->hw
.flash_address
)
5094 iounmap(adapter
->hw
.flash_address
);
5095 pci_release_selected_regions(pdev
,
5096 pci_select_bars(pdev
, IORESOURCE_MEM
));
5098 free_netdev(netdev
);
5100 pci_disable_device(pdev
);
5103 /* PCI Error Recovery (ERS) */
5104 static struct pci_error_handlers e1000_err_handler
= {
5105 .error_detected
= e1000_io_error_detected
,
5106 .slot_reset
= e1000_io_slot_reset
,
5107 .resume
= e1000_io_resume
,
5110 static struct pci_device_id e1000_pci_tbl
[] = {
5111 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5112 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5113 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5114 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5115 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5116 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5117 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5118 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5119 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5121 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5122 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5123 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5124 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5126 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5127 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5128 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5130 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5132 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5133 board_80003es2lan
},
5134 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5135 board_80003es2lan
},
5136 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5137 board_80003es2lan
},
5138 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5139 board_80003es2lan
},
5141 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5142 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5143 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5144 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5145 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5146 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5147 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5149 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5150 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5151 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5152 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5153 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5154 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5155 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5156 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5157 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5159 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5160 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5161 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5163 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5164 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5166 { } /* terminate list */
5168 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
5170 /* PCI Device API Driver */
5171 static struct pci_driver e1000_driver
= {
5172 .name
= e1000e_driver_name
,
5173 .id_table
= e1000_pci_tbl
,
5174 .probe
= e1000_probe
,
5175 .remove
= __devexit_p(e1000_remove
),
5177 /* Power Management Hooks */
5178 .suspend
= e1000_suspend
,
5179 .resume
= e1000_resume
,
5181 .shutdown
= e1000_shutdown
,
5182 .err_handler
= &e1000_err_handler
5186 * e1000_init_module - Driver Registration Routine
5188 * e1000_init_module is the first routine called when the driver is
5189 * loaded. All it does is register with the PCI subsystem.
5191 static int __init
e1000_init_module(void)
5194 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
5195 e1000e_driver_name
, e1000e_driver_version
);
5196 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
5197 e1000e_driver_name
);
5198 ret
= pci_register_driver(&e1000_driver
);
5199 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
5200 PM_QOS_DEFAULT_VALUE
);
5204 module_init(e1000_init_module
);
5207 * e1000_exit_module - Driver Exit Cleanup Routine
5209 * e1000_exit_module is called just before the driver is removed
5212 static void __exit
e1000_exit_module(void)
5214 pci_unregister_driver(&e1000_driver
);
5215 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
5217 module_exit(e1000_exit_module
);
5220 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5221 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5222 MODULE_LICENSE("GPL");
5223 MODULE_VERSION(DRV_VERSION
);