1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2009 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>
47 #include <linux/aer.h>
51 #define DRV_VERSION "1.0.2-k2"
52 char e1000e_driver_name
[] = "e1000e";
53 const char e1000e_driver_version
[] = DRV_VERSION
;
55 static const struct e1000_info
*e1000_info_tbl
[] = {
56 [board_82571
] = &e1000_82571_info
,
57 [board_82572
] = &e1000_82572_info
,
58 [board_82573
] = &e1000_82573_info
,
59 [board_82574
] = &e1000_82574_info
,
60 [board_82583
] = &e1000_82583_info
,
61 [board_80003es2lan
] = &e1000_es2_info
,
62 [board_ich8lan
] = &e1000_ich8_info
,
63 [board_ich9lan
] = &e1000_ich9_info
,
64 [board_ich10lan
] = &e1000_ich10_info
,
65 [board_pchlan
] = &e1000_pch_info
,
69 * e1000_desc_unused - calculate if we have unused descriptors
71 static int e1000_desc_unused(struct e1000_ring
*ring
)
73 if (ring
->next_to_clean
> ring
->next_to_use
)
74 return ring
->next_to_clean
- ring
->next_to_use
- 1;
76 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
80 * e1000_receive_skb - helper function to handle Rx indications
81 * @adapter: board private structure
82 * @status: descriptor status field as written by hardware
83 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
84 * @skb: pointer to sk_buff to be indicated to stack
86 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
87 struct net_device
*netdev
,
89 u8 status
, __le16 vlan
)
91 skb
->protocol
= eth_type_trans(skb
, netdev
);
93 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
94 vlan_gro_receive(&adapter
->napi
, adapter
->vlgrp
,
95 le16_to_cpu(vlan
), skb
);
97 napi_gro_receive(&adapter
->napi
, skb
);
101 * e1000_rx_checksum - Receive Checksum Offload for 82543
102 * @adapter: board private structure
103 * @status_err: receive descriptor status and error fields
104 * @csum: receive descriptor csum field
105 * @sk_buff: socket buffer with received data
107 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
108 u32 csum
, struct sk_buff
*skb
)
110 u16 status
= (u16
)status_err
;
111 u8 errors
= (u8
)(status_err
>> 24);
112 skb
->ip_summed
= CHECKSUM_NONE
;
114 /* Ignore Checksum bit is set */
115 if (status
& E1000_RXD_STAT_IXSM
)
117 /* TCP/UDP checksum error bit is set */
118 if (errors
& E1000_RXD_ERR_TCPE
) {
119 /* let the stack verify checksum errors */
120 adapter
->hw_csum_err
++;
124 /* TCP/UDP Checksum has not been calculated */
125 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
128 /* It must be a TCP or UDP packet with a valid checksum */
129 if (status
& E1000_RXD_STAT_TCPCS
) {
130 /* TCP checksum is good */
131 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
134 * IP fragment with UDP payload
135 * Hardware complements the payload checksum, so we undo it
136 * and then put the value in host order for further stack use.
138 __sum16 sum
= (__force __sum16
)htons(csum
);
139 skb
->csum
= csum_unfold(~sum
);
140 skb
->ip_summed
= CHECKSUM_COMPLETE
;
142 adapter
->hw_csum_good
++;
146 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
147 * @adapter: address of board private structure
149 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
152 struct net_device
*netdev
= adapter
->netdev
;
153 struct pci_dev
*pdev
= adapter
->pdev
;
154 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
155 struct e1000_rx_desc
*rx_desc
;
156 struct e1000_buffer
*buffer_info
;
159 unsigned int bufsz
= adapter
->rx_buffer_len
;
161 i
= rx_ring
->next_to_use
;
162 buffer_info
= &rx_ring
->buffer_info
[i
];
164 while (cleaned_count
--) {
165 skb
= buffer_info
->skb
;
171 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
173 /* Better luck next round */
174 adapter
->alloc_rx_buff_failed
++;
178 buffer_info
->skb
= skb
;
180 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
181 adapter
->rx_buffer_len
,
183 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
184 dev_err(&pdev
->dev
, "RX DMA map failed\n");
185 adapter
->rx_dma_failed
++;
189 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
190 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
193 if (i
== rx_ring
->count
)
195 buffer_info
= &rx_ring
->buffer_info
[i
];
198 if (rx_ring
->next_to_use
!= i
) {
199 rx_ring
->next_to_use
= i
;
201 i
= (rx_ring
->count
- 1);
204 * Force memory writes to complete before letting h/w
205 * know there are new descriptors to fetch. (Only
206 * applicable for weak-ordered memory model archs,
210 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
215 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
216 * @adapter: address of board private structure
218 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
221 struct net_device
*netdev
= adapter
->netdev
;
222 struct pci_dev
*pdev
= adapter
->pdev
;
223 union e1000_rx_desc_packet_split
*rx_desc
;
224 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
225 struct e1000_buffer
*buffer_info
;
226 struct e1000_ps_page
*ps_page
;
230 i
= rx_ring
->next_to_use
;
231 buffer_info
= &rx_ring
->buffer_info
[i
];
233 while (cleaned_count
--) {
234 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
236 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
237 ps_page
= &buffer_info
->ps_pages
[j
];
238 if (j
>= adapter
->rx_ps_pages
) {
239 /* all unused desc entries get hw null ptr */
240 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
243 if (!ps_page
->page
) {
244 ps_page
->page
= alloc_page(GFP_ATOMIC
);
245 if (!ps_page
->page
) {
246 adapter
->alloc_rx_buff_failed
++;
249 ps_page
->dma
= pci_map_page(pdev
,
253 if (pci_dma_mapping_error(pdev
, ps_page
->dma
)) {
254 dev_err(&adapter
->pdev
->dev
,
255 "RX DMA page map failed\n");
256 adapter
->rx_dma_failed
++;
261 * Refresh the desc even if buffer_addrs
262 * didn't change because each write-back
265 rx_desc
->read
.buffer_addr
[j
+1] =
266 cpu_to_le64(ps_page
->dma
);
269 skb
= netdev_alloc_skb_ip_align(netdev
,
270 adapter
->rx_ps_bsize0
);
273 adapter
->alloc_rx_buff_failed
++;
277 buffer_info
->skb
= skb
;
278 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
279 adapter
->rx_ps_bsize0
,
281 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
282 dev_err(&pdev
->dev
, "RX DMA map failed\n");
283 adapter
->rx_dma_failed
++;
285 dev_kfree_skb_any(skb
);
286 buffer_info
->skb
= NULL
;
290 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
293 if (i
== rx_ring
->count
)
295 buffer_info
= &rx_ring
->buffer_info
[i
];
299 if (rx_ring
->next_to_use
!= i
) {
300 rx_ring
->next_to_use
= i
;
303 i
= (rx_ring
->count
- 1);
306 * Force memory writes to complete before letting h/w
307 * know there are new descriptors to fetch. (Only
308 * applicable for weak-ordered memory model archs,
313 * Hardware increments by 16 bytes, but packet split
314 * descriptors are 32 bytes...so we increment tail
317 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
322 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
323 * @adapter: address of board private structure
324 * @cleaned_count: number of buffers to allocate this pass
327 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
330 struct net_device
*netdev
= adapter
->netdev
;
331 struct pci_dev
*pdev
= adapter
->pdev
;
332 struct e1000_rx_desc
*rx_desc
;
333 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
334 struct e1000_buffer
*buffer_info
;
337 unsigned int bufsz
= 256 - 16 /* for skb_reserve */;
339 i
= rx_ring
->next_to_use
;
340 buffer_info
= &rx_ring
->buffer_info
[i
];
342 while (cleaned_count
--) {
343 skb
= buffer_info
->skb
;
349 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
350 if (unlikely(!skb
)) {
351 /* Better luck next round */
352 adapter
->alloc_rx_buff_failed
++;
356 buffer_info
->skb
= skb
;
358 /* allocate a new page if necessary */
359 if (!buffer_info
->page
) {
360 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
361 if (unlikely(!buffer_info
->page
)) {
362 adapter
->alloc_rx_buff_failed
++;
367 if (!buffer_info
->dma
)
368 buffer_info
->dma
= pci_map_page(pdev
,
369 buffer_info
->page
, 0,
373 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
374 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
376 if (unlikely(++i
== rx_ring
->count
))
378 buffer_info
= &rx_ring
->buffer_info
[i
];
381 if (likely(rx_ring
->next_to_use
!= i
)) {
382 rx_ring
->next_to_use
= i
;
383 if (unlikely(i
-- == 0))
384 i
= (rx_ring
->count
- 1);
386 /* Force memory writes to complete before letting h/w
387 * know there are new descriptors to fetch. (Only
388 * applicable for weak-ordered memory model archs,
391 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
396 * e1000_clean_rx_irq - Send received data up the network stack; legacy
397 * @adapter: board private structure
399 * the return value indicates whether actual cleaning was done, there
400 * is no guarantee that everything was cleaned
402 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
403 int *work_done
, int work_to_do
)
405 struct net_device
*netdev
= adapter
->netdev
;
406 struct pci_dev
*pdev
= adapter
->pdev
;
407 struct e1000_hw
*hw
= &adapter
->hw
;
408 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
409 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
410 struct e1000_buffer
*buffer_info
, *next_buffer
;
413 int cleaned_count
= 0;
415 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
417 i
= rx_ring
->next_to_clean
;
418 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
419 buffer_info
= &rx_ring
->buffer_info
[i
];
421 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
425 if (*work_done
>= work_to_do
)
429 status
= rx_desc
->status
;
430 skb
= buffer_info
->skb
;
431 buffer_info
->skb
= NULL
;
433 prefetch(skb
->data
- NET_IP_ALIGN
);
436 if (i
== rx_ring
->count
)
438 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
441 next_buffer
= &rx_ring
->buffer_info
[i
];
445 pci_unmap_single(pdev
,
447 adapter
->rx_buffer_len
,
449 buffer_info
->dma
= 0;
451 length
= le16_to_cpu(rx_desc
->length
);
454 * !EOP means multiple descriptors were used to store a single
455 * packet, if that's the case we need to toss it. In fact, we
456 * need to toss every packet with the EOP bit clear and the
457 * next frame that _does_ have the EOP bit set, as it is by
458 * definition only a frame fragment
460 if (unlikely(!(status
& E1000_RXD_STAT_EOP
)))
461 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
463 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
464 /* All receives must fit into a single buffer */
465 e_dbg("Receive packet consumed multiple buffers\n");
467 buffer_info
->skb
= skb
;
468 if (status
& E1000_RXD_STAT_EOP
)
469 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
473 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
475 buffer_info
->skb
= skb
;
479 /* adjust length to remove Ethernet CRC */
480 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
483 total_rx_bytes
+= length
;
487 * code added for copybreak, this should improve
488 * performance for small packets with large amounts
489 * of reassembly being done in the stack
491 if (length
< copybreak
) {
492 struct sk_buff
*new_skb
=
493 netdev_alloc_skb_ip_align(netdev
, length
);
495 skb_copy_to_linear_data_offset(new_skb
,
501 /* save the skb in buffer_info as good */
502 buffer_info
->skb
= skb
;
505 /* else just continue with the old one */
507 /* end copybreak code */
508 skb_put(skb
, length
);
510 /* Receive Checksum Offload */
511 e1000_rx_checksum(adapter
,
513 ((u32
)(rx_desc
->errors
) << 24),
514 le16_to_cpu(rx_desc
->csum
), skb
);
516 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
521 /* return some buffers to hardware, one at a time is too slow */
522 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
523 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
527 /* use prefetched values */
529 buffer_info
= next_buffer
;
531 rx_ring
->next_to_clean
= i
;
533 cleaned_count
= e1000_desc_unused(rx_ring
);
535 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
537 adapter
->total_rx_bytes
+= total_rx_bytes
;
538 adapter
->total_rx_packets
+= total_rx_packets
;
539 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
540 netdev
->stats
.rx_packets
+= total_rx_packets
;
544 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
545 struct e1000_buffer
*buffer_info
)
547 if (buffer_info
->dma
) {
548 if (buffer_info
->mapped_as_page
)
549 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
550 buffer_info
->length
, PCI_DMA_TODEVICE
);
552 pci_unmap_single(adapter
->pdev
, buffer_info
->dma
,
555 buffer_info
->dma
= 0;
557 if (buffer_info
->skb
) {
558 dev_kfree_skb_any(buffer_info
->skb
);
559 buffer_info
->skb
= NULL
;
561 buffer_info
->time_stamp
= 0;
564 static void e1000_print_hw_hang(struct work_struct
*work
)
566 struct e1000_adapter
*adapter
= container_of(work
,
567 struct e1000_adapter
,
569 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
570 unsigned int i
= tx_ring
->next_to_clean
;
571 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
572 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
573 struct e1000_hw
*hw
= &adapter
->hw
;
574 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
577 e1e_rphy(hw
, PHY_STATUS
, &phy_status
);
578 e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_1000t_status
);
579 e1e_rphy(hw
, PHY_EXT_STATUS
, &phy_ext_status
);
581 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
583 /* detected Hardware unit hang */
584 e_err("Detected Hardware Unit Hang:\n"
587 " next_to_use <%x>\n"
588 " next_to_clean <%x>\n"
589 "buffer_info[next_to_clean]:\n"
590 " time_stamp <%lx>\n"
591 " next_to_watch <%x>\n"
593 " next_to_watch.status <%x>\n"
596 "PHY 1000BASE-T Status <%x>\n"
597 "PHY Extended Status <%x>\n"
599 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
600 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
601 tx_ring
->next_to_use
,
602 tx_ring
->next_to_clean
,
603 tx_ring
->buffer_info
[eop
].time_stamp
,
606 eop_desc
->upper
.fields
.status
,
615 * e1000_clean_tx_irq - Reclaim resources after transmit completes
616 * @adapter: board private structure
618 * the return value indicates whether actual cleaning was done, there
619 * is no guarantee that everything was cleaned
621 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
623 struct net_device
*netdev
= adapter
->netdev
;
624 struct e1000_hw
*hw
= &adapter
->hw
;
625 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
626 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
627 struct e1000_buffer
*buffer_info
;
629 unsigned int count
= 0;
630 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
632 i
= tx_ring
->next_to_clean
;
633 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
634 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
636 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
637 (count
< tx_ring
->count
)) {
638 bool cleaned
= false;
639 for (; !cleaned
; count
++) {
640 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
641 buffer_info
= &tx_ring
->buffer_info
[i
];
642 cleaned
= (i
== eop
);
645 struct sk_buff
*skb
= buffer_info
->skb
;
646 unsigned int segs
, bytecount
;
647 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
648 /* multiply data chunks by size of headers */
649 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
651 total_tx_packets
+= segs
;
652 total_tx_bytes
+= bytecount
;
655 e1000_put_txbuf(adapter
, buffer_info
);
656 tx_desc
->upper
.data
= 0;
659 if (i
== tx_ring
->count
)
663 if (i
== tx_ring
->next_to_use
)
665 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
666 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
669 tx_ring
->next_to_clean
= i
;
671 #define TX_WAKE_THRESHOLD 32
672 if (count
&& netif_carrier_ok(netdev
) &&
673 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
674 /* Make sure that anybody stopping the queue after this
675 * sees the new next_to_clean.
679 if (netif_queue_stopped(netdev
) &&
680 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
681 netif_wake_queue(netdev
);
682 ++adapter
->restart_queue
;
686 if (adapter
->detect_tx_hung
) {
688 * Detect a transmit hang in hardware, this serializes the
689 * check with the clearing of time_stamp and movement of i
691 adapter
->detect_tx_hung
= 0;
692 if (tx_ring
->buffer_info
[i
].time_stamp
&&
693 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
694 + (adapter
->tx_timeout_factor
* HZ
)) &&
695 !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
696 schedule_work(&adapter
->print_hang_task
);
697 netif_stop_queue(netdev
);
700 adapter
->total_tx_bytes
+= total_tx_bytes
;
701 adapter
->total_tx_packets
+= total_tx_packets
;
702 netdev
->stats
.tx_bytes
+= total_tx_bytes
;
703 netdev
->stats
.tx_packets
+= total_tx_packets
;
704 return (count
< tx_ring
->count
);
708 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
709 * @adapter: board private structure
711 * the return value indicates whether actual cleaning was done, there
712 * is no guarantee that everything was cleaned
714 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
715 int *work_done
, int work_to_do
)
717 struct e1000_hw
*hw
= &adapter
->hw
;
718 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
719 struct net_device
*netdev
= adapter
->netdev
;
720 struct pci_dev
*pdev
= adapter
->pdev
;
721 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
722 struct e1000_buffer
*buffer_info
, *next_buffer
;
723 struct e1000_ps_page
*ps_page
;
727 int cleaned_count
= 0;
729 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
731 i
= rx_ring
->next_to_clean
;
732 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
733 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
734 buffer_info
= &rx_ring
->buffer_info
[i
];
736 while (staterr
& E1000_RXD_STAT_DD
) {
737 if (*work_done
>= work_to_do
)
740 skb
= buffer_info
->skb
;
742 /* in the packet split case this is header only */
743 prefetch(skb
->data
- NET_IP_ALIGN
);
746 if (i
== rx_ring
->count
)
748 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
751 next_buffer
= &rx_ring
->buffer_info
[i
];
755 pci_unmap_single(pdev
, buffer_info
->dma
,
756 adapter
->rx_ps_bsize0
,
758 buffer_info
->dma
= 0;
760 /* see !EOP comment in other rx routine */
761 if (!(staterr
& E1000_RXD_STAT_EOP
))
762 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
764 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
765 e_dbg("Packet Split buffers didn't pick up the full "
767 dev_kfree_skb_irq(skb
);
768 if (staterr
& E1000_RXD_STAT_EOP
)
769 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
773 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
774 dev_kfree_skb_irq(skb
);
778 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
781 e_dbg("Last part of the packet spanning multiple "
783 dev_kfree_skb_irq(skb
);
788 skb_put(skb
, length
);
792 * this looks ugly, but it seems compiler issues make it
793 * more efficient than reusing j
795 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
798 * page alloc/put takes too long and effects small packet
799 * throughput, so unsplit small packets and save the alloc/put
800 * only valid in softirq (napi) context to call kmap_*
802 if (l1
&& (l1
<= copybreak
) &&
803 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
806 ps_page
= &buffer_info
->ps_pages
[0];
809 * there is no documentation about how to call
810 * kmap_atomic, so we can't hold the mapping
813 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
814 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
815 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
816 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
817 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
818 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
819 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
822 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
830 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
831 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
835 ps_page
= &buffer_info
->ps_pages
[j
];
836 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
839 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
840 ps_page
->page
= NULL
;
842 skb
->data_len
+= length
;
843 skb
->truesize
+= length
;
846 /* strip the ethernet crc, problem is we're using pages now so
847 * this whole operation can get a little cpu intensive
849 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
850 pskb_trim(skb
, skb
->len
- 4);
853 total_rx_bytes
+= skb
->len
;
856 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
857 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
859 if (rx_desc
->wb
.upper
.header_status
&
860 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
861 adapter
->rx_hdr_split
++;
863 e1000_receive_skb(adapter
, netdev
, skb
,
864 staterr
, rx_desc
->wb
.middle
.vlan
);
867 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
868 buffer_info
->skb
= NULL
;
870 /* return some buffers to hardware, one at a time is too slow */
871 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
872 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
876 /* use prefetched values */
878 buffer_info
= next_buffer
;
880 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
882 rx_ring
->next_to_clean
= i
;
884 cleaned_count
= e1000_desc_unused(rx_ring
);
886 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
888 adapter
->total_rx_bytes
+= total_rx_bytes
;
889 adapter
->total_rx_packets
+= total_rx_packets
;
890 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
891 netdev
->stats
.rx_packets
+= total_rx_packets
;
896 * e1000_consume_page - helper function
898 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
903 skb
->data_len
+= length
;
904 skb
->truesize
+= length
;
908 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
909 * @adapter: board private structure
911 * the return value indicates whether actual cleaning was done, there
912 * is no guarantee that everything was cleaned
915 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
916 int *work_done
, int work_to_do
)
918 struct net_device
*netdev
= adapter
->netdev
;
919 struct pci_dev
*pdev
= adapter
->pdev
;
920 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
921 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
922 struct e1000_buffer
*buffer_info
, *next_buffer
;
925 int cleaned_count
= 0;
926 bool cleaned
= false;
927 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
929 i
= rx_ring
->next_to_clean
;
930 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
931 buffer_info
= &rx_ring
->buffer_info
[i
];
933 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
937 if (*work_done
>= work_to_do
)
941 status
= rx_desc
->status
;
942 skb
= buffer_info
->skb
;
943 buffer_info
->skb
= NULL
;
946 if (i
== rx_ring
->count
)
948 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
951 next_buffer
= &rx_ring
->buffer_info
[i
];
955 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
957 buffer_info
->dma
= 0;
959 length
= le16_to_cpu(rx_desc
->length
);
961 /* errors is only valid for DD + EOP descriptors */
962 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
963 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
964 /* recycle both page and skb */
965 buffer_info
->skb
= skb
;
966 /* an error means any chain goes out the window
968 if (rx_ring
->rx_skb_top
)
969 dev_kfree_skb(rx_ring
->rx_skb_top
);
970 rx_ring
->rx_skb_top
= NULL
;
974 #define rxtop rx_ring->rx_skb_top
975 if (!(status
& E1000_RXD_STAT_EOP
)) {
976 /* this descriptor is only the beginning (or middle) */
978 /* this is the beginning of a chain */
980 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
983 /* this is the middle of a chain */
984 skb_fill_page_desc(rxtop
,
985 skb_shinfo(rxtop
)->nr_frags
,
986 buffer_info
->page
, 0, length
);
987 /* re-use the skb, only consumed the page */
988 buffer_info
->skb
= skb
;
990 e1000_consume_page(buffer_info
, rxtop
, length
);
994 /* end of the chain */
995 skb_fill_page_desc(rxtop
,
996 skb_shinfo(rxtop
)->nr_frags
,
997 buffer_info
->page
, 0, length
);
998 /* re-use the current skb, we only consumed the
1000 buffer_info
->skb
= skb
;
1003 e1000_consume_page(buffer_info
, skb
, length
);
1005 /* no chain, got EOP, this buf is the packet
1006 * copybreak to save the put_page/alloc_page */
1007 if (length
<= copybreak
&&
1008 skb_tailroom(skb
) >= length
) {
1010 vaddr
= kmap_atomic(buffer_info
->page
,
1011 KM_SKB_DATA_SOFTIRQ
);
1012 memcpy(skb_tail_pointer(skb
), vaddr
,
1014 kunmap_atomic(vaddr
,
1015 KM_SKB_DATA_SOFTIRQ
);
1016 /* re-use the page, so don't erase
1017 * buffer_info->page */
1018 skb_put(skb
, length
);
1020 skb_fill_page_desc(skb
, 0,
1021 buffer_info
->page
, 0,
1023 e1000_consume_page(buffer_info
, skb
,
1029 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1030 e1000_rx_checksum(adapter
,
1032 ((u32
)(rx_desc
->errors
) << 24),
1033 le16_to_cpu(rx_desc
->csum
), skb
);
1035 /* probably a little skewed due to removing CRC */
1036 total_rx_bytes
+= skb
->len
;
1039 /* eth type trans needs skb->data to point to something */
1040 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1041 e_err("pskb_may_pull failed.\n");
1046 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1050 rx_desc
->status
= 0;
1052 /* return some buffers to hardware, one at a time is too slow */
1053 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1054 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1058 /* use prefetched values */
1060 buffer_info
= next_buffer
;
1062 rx_ring
->next_to_clean
= i
;
1064 cleaned_count
= e1000_desc_unused(rx_ring
);
1066 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1068 adapter
->total_rx_bytes
+= total_rx_bytes
;
1069 adapter
->total_rx_packets
+= total_rx_packets
;
1070 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
1071 netdev
->stats
.rx_packets
+= total_rx_packets
;
1076 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1077 * @adapter: board private structure
1079 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1081 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1082 struct e1000_buffer
*buffer_info
;
1083 struct e1000_ps_page
*ps_page
;
1084 struct pci_dev
*pdev
= adapter
->pdev
;
1087 /* Free all the Rx ring sk_buffs */
1088 for (i
= 0; i
< rx_ring
->count
; i
++) {
1089 buffer_info
= &rx_ring
->buffer_info
[i
];
1090 if (buffer_info
->dma
) {
1091 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1092 pci_unmap_single(pdev
, buffer_info
->dma
,
1093 adapter
->rx_buffer_len
,
1094 PCI_DMA_FROMDEVICE
);
1095 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1096 pci_unmap_page(pdev
, buffer_info
->dma
,
1098 PCI_DMA_FROMDEVICE
);
1099 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1100 pci_unmap_single(pdev
, buffer_info
->dma
,
1101 adapter
->rx_ps_bsize0
,
1102 PCI_DMA_FROMDEVICE
);
1103 buffer_info
->dma
= 0;
1106 if (buffer_info
->page
) {
1107 put_page(buffer_info
->page
);
1108 buffer_info
->page
= NULL
;
1111 if (buffer_info
->skb
) {
1112 dev_kfree_skb(buffer_info
->skb
);
1113 buffer_info
->skb
= NULL
;
1116 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1117 ps_page
= &buffer_info
->ps_pages
[j
];
1120 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1121 PCI_DMA_FROMDEVICE
);
1123 put_page(ps_page
->page
);
1124 ps_page
->page
= NULL
;
1128 /* there also may be some cached data from a chained receive */
1129 if (rx_ring
->rx_skb_top
) {
1130 dev_kfree_skb(rx_ring
->rx_skb_top
);
1131 rx_ring
->rx_skb_top
= NULL
;
1134 /* Zero out the descriptor ring */
1135 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1137 rx_ring
->next_to_clean
= 0;
1138 rx_ring
->next_to_use
= 0;
1139 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1141 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1142 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1145 static void e1000e_downshift_workaround(struct work_struct
*work
)
1147 struct e1000_adapter
*adapter
= container_of(work
,
1148 struct e1000_adapter
, downshift_task
);
1150 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1154 * e1000_intr_msi - Interrupt Handler
1155 * @irq: interrupt number
1156 * @data: pointer to a network interface device structure
1158 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1160 struct net_device
*netdev
= data
;
1161 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1162 struct e1000_hw
*hw
= &adapter
->hw
;
1163 u32 icr
= er32(ICR
);
1166 * read ICR disables interrupts using IAM
1169 if (icr
& E1000_ICR_LSC
) {
1170 hw
->mac
.get_link_status
= 1;
1172 * ICH8 workaround-- Call gig speed drop workaround on cable
1173 * disconnect (LSC) before accessing any PHY registers
1175 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1176 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1177 schedule_work(&adapter
->downshift_task
);
1180 * 80003ES2LAN workaround-- For packet buffer work-around on
1181 * link down event; disable receives here in the ISR and reset
1182 * adapter in watchdog
1184 if (netif_carrier_ok(netdev
) &&
1185 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1186 /* disable receives */
1187 u32 rctl
= er32(RCTL
);
1188 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1189 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1191 /* guard against interrupt when we're going down */
1192 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1193 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1196 if (napi_schedule_prep(&adapter
->napi
)) {
1197 adapter
->total_tx_bytes
= 0;
1198 adapter
->total_tx_packets
= 0;
1199 adapter
->total_rx_bytes
= 0;
1200 adapter
->total_rx_packets
= 0;
1201 __napi_schedule(&adapter
->napi
);
1208 * e1000_intr - Interrupt Handler
1209 * @irq: interrupt number
1210 * @data: pointer to a network interface device structure
1212 static irqreturn_t
e1000_intr(int irq
, void *data
)
1214 struct net_device
*netdev
= data
;
1215 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1216 struct e1000_hw
*hw
= &adapter
->hw
;
1217 u32 rctl
, icr
= er32(ICR
);
1219 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1220 return IRQ_NONE
; /* Not our interrupt */
1223 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1224 * not set, then the adapter didn't send an interrupt
1226 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1230 * Interrupt Auto-Mask...upon reading ICR,
1231 * interrupts are masked. No need for the
1235 if (icr
& E1000_ICR_LSC
) {
1236 hw
->mac
.get_link_status
= 1;
1238 * ICH8 workaround-- Call gig speed drop workaround on cable
1239 * disconnect (LSC) before accessing any PHY registers
1241 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1242 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1243 schedule_work(&adapter
->downshift_task
);
1246 * 80003ES2LAN workaround--
1247 * For packet buffer work-around on link down event;
1248 * disable receives here in the ISR and
1249 * reset adapter in watchdog
1251 if (netif_carrier_ok(netdev
) &&
1252 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1253 /* disable receives */
1255 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1256 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1258 /* guard against interrupt when we're going down */
1259 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1260 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1263 if (napi_schedule_prep(&adapter
->napi
)) {
1264 adapter
->total_tx_bytes
= 0;
1265 adapter
->total_tx_packets
= 0;
1266 adapter
->total_rx_bytes
= 0;
1267 adapter
->total_rx_packets
= 0;
1268 __napi_schedule(&adapter
->napi
);
1274 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1276 struct net_device
*netdev
= data
;
1277 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1278 struct e1000_hw
*hw
= &adapter
->hw
;
1279 u32 icr
= er32(ICR
);
1281 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1282 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1283 ew32(IMS
, E1000_IMS_OTHER
);
1287 if (icr
& adapter
->eiac_mask
)
1288 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1290 if (icr
& E1000_ICR_OTHER
) {
1291 if (!(icr
& E1000_ICR_LSC
))
1292 goto no_link_interrupt
;
1293 hw
->mac
.get_link_status
= 1;
1294 /* guard against interrupt when we're going down */
1295 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1296 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1300 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1301 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1307 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1309 struct net_device
*netdev
= data
;
1310 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1311 struct e1000_hw
*hw
= &adapter
->hw
;
1312 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1315 adapter
->total_tx_bytes
= 0;
1316 adapter
->total_tx_packets
= 0;
1318 if (!e1000_clean_tx_irq(adapter
))
1319 /* Ring was not completely cleaned, so fire another interrupt */
1320 ew32(ICS
, tx_ring
->ims_val
);
1325 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1327 struct net_device
*netdev
= data
;
1328 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1330 /* Write the ITR value calculated at the end of the
1331 * previous interrupt.
1333 if (adapter
->rx_ring
->set_itr
) {
1334 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1335 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1336 adapter
->rx_ring
->set_itr
= 0;
1339 if (napi_schedule_prep(&adapter
->napi
)) {
1340 adapter
->total_rx_bytes
= 0;
1341 adapter
->total_rx_packets
= 0;
1342 __napi_schedule(&adapter
->napi
);
1348 * e1000_configure_msix - Configure MSI-X hardware
1350 * e1000_configure_msix sets up the hardware to properly
1351 * generate MSI-X interrupts.
1353 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1355 struct e1000_hw
*hw
= &adapter
->hw
;
1356 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1357 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1359 u32 ctrl_ext
, ivar
= 0;
1361 adapter
->eiac_mask
= 0;
1363 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1364 if (hw
->mac
.type
== e1000_82574
) {
1365 u32 rfctl
= er32(RFCTL
);
1366 rfctl
|= E1000_RFCTL_ACK_DIS
;
1370 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1371 /* Configure Rx vector */
1372 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1373 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1374 if (rx_ring
->itr_val
)
1375 writel(1000000000 / (rx_ring
->itr_val
* 256),
1376 hw
->hw_addr
+ rx_ring
->itr_register
);
1378 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1379 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1381 /* Configure Tx vector */
1382 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1384 if (tx_ring
->itr_val
)
1385 writel(1000000000 / (tx_ring
->itr_val
* 256),
1386 hw
->hw_addr
+ tx_ring
->itr_register
);
1388 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1389 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1390 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1392 /* set vector for Other Causes, e.g. link changes */
1394 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1395 if (rx_ring
->itr_val
)
1396 writel(1000000000 / (rx_ring
->itr_val
* 256),
1397 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1399 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1401 /* Cause Tx interrupts on every write back */
1406 /* enable MSI-X PBA support */
1407 ctrl_ext
= er32(CTRL_EXT
);
1408 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1410 /* Auto-Mask Other interrupts upon ICR read */
1411 #define E1000_EIAC_MASK_82574 0x01F00000
1412 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1413 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1414 ew32(CTRL_EXT
, ctrl_ext
);
1418 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1420 if (adapter
->msix_entries
) {
1421 pci_disable_msix(adapter
->pdev
);
1422 kfree(adapter
->msix_entries
);
1423 adapter
->msix_entries
= NULL
;
1424 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1425 pci_disable_msi(adapter
->pdev
);
1426 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1433 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1435 * Attempt to configure interrupts using the best available
1436 * capabilities of the hardware and kernel.
1438 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1444 switch (adapter
->int_mode
) {
1445 case E1000E_INT_MODE_MSIX
:
1446 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1447 numvecs
= 3; /* RxQ0, TxQ0 and other */
1448 adapter
->msix_entries
= kcalloc(numvecs
,
1449 sizeof(struct msix_entry
),
1451 if (adapter
->msix_entries
) {
1452 for (i
= 0; i
< numvecs
; i
++)
1453 adapter
->msix_entries
[i
].entry
= i
;
1455 err
= pci_enable_msix(adapter
->pdev
,
1456 adapter
->msix_entries
,
1461 /* MSI-X failed, so fall through and try MSI */
1462 e_err("Failed to initialize MSI-X interrupts. "
1463 "Falling back to MSI interrupts.\n");
1464 e1000e_reset_interrupt_capability(adapter
);
1466 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1468 case E1000E_INT_MODE_MSI
:
1469 if (!pci_enable_msi(adapter
->pdev
)) {
1470 adapter
->flags
|= FLAG_MSI_ENABLED
;
1472 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1473 e_err("Failed to initialize MSI interrupts. Falling "
1474 "back to legacy interrupts.\n");
1477 case E1000E_INT_MODE_LEGACY
:
1478 /* Don't do anything; this is the system default */
1486 * e1000_request_msix - Initialize MSI-X interrupts
1488 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1491 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1493 struct net_device
*netdev
= adapter
->netdev
;
1494 int err
= 0, vector
= 0;
1496 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1497 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1499 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1500 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1501 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1505 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1506 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1509 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1510 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1512 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1513 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1514 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1518 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1519 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1522 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1523 e1000_msix_other
, 0, netdev
->name
, netdev
);
1527 e1000_configure_msix(adapter
);
1534 * e1000_request_irq - initialize interrupts
1536 * Attempts to configure interrupts using the best available
1537 * capabilities of the hardware and kernel.
1539 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1541 struct net_device
*netdev
= adapter
->netdev
;
1544 if (adapter
->msix_entries
) {
1545 err
= e1000_request_msix(adapter
);
1548 /* fall back to MSI */
1549 e1000e_reset_interrupt_capability(adapter
);
1550 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1551 e1000e_set_interrupt_capability(adapter
);
1553 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1554 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
1555 netdev
->name
, netdev
);
1559 /* fall back to legacy interrupt */
1560 e1000e_reset_interrupt_capability(adapter
);
1561 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1564 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
1565 netdev
->name
, netdev
);
1567 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1572 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1574 struct net_device
*netdev
= adapter
->netdev
;
1576 if (adapter
->msix_entries
) {
1579 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1582 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1585 /* Other Causes interrupt vector */
1586 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1590 free_irq(adapter
->pdev
->irq
, netdev
);
1594 * e1000_irq_disable - Mask off interrupt generation on the NIC
1596 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1598 struct e1000_hw
*hw
= &adapter
->hw
;
1601 if (adapter
->msix_entries
)
1602 ew32(EIAC_82574
, 0);
1604 synchronize_irq(adapter
->pdev
->irq
);
1608 * e1000_irq_enable - Enable default interrupt generation settings
1610 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1612 struct e1000_hw
*hw
= &adapter
->hw
;
1614 if (adapter
->msix_entries
) {
1615 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1616 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1618 ew32(IMS
, IMS_ENABLE_MASK
);
1624 * e1000_get_hw_control - get control of the h/w from f/w
1625 * @adapter: address of board private structure
1627 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1628 * For ASF and Pass Through versions of f/w this means that
1629 * the driver is loaded. For AMT version (only with 82573)
1630 * of the f/w this means that the network i/f is open.
1632 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1634 struct e1000_hw
*hw
= &adapter
->hw
;
1638 /* Let firmware know the driver has taken over */
1639 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1641 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1642 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1643 ctrl_ext
= er32(CTRL_EXT
);
1644 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1649 * e1000_release_hw_control - release control of the h/w to f/w
1650 * @adapter: address of board private structure
1652 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1653 * For ASF and Pass Through versions of f/w this means that the
1654 * driver is no longer loaded. For AMT version (only with 82573) i
1655 * of the f/w this means that the network i/f is closed.
1658 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1660 struct e1000_hw
*hw
= &adapter
->hw
;
1664 /* Let firmware taken over control of h/w */
1665 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1667 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1668 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1669 ctrl_ext
= er32(CTRL_EXT
);
1670 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1675 * @e1000_alloc_ring - allocate memory for a ring structure
1677 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1678 struct e1000_ring
*ring
)
1680 struct pci_dev
*pdev
= adapter
->pdev
;
1682 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1691 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1692 * @adapter: board private structure
1694 * Return 0 on success, negative on failure
1696 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1698 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1699 int err
= -ENOMEM
, size
;
1701 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1702 tx_ring
->buffer_info
= vmalloc(size
);
1703 if (!tx_ring
->buffer_info
)
1705 memset(tx_ring
->buffer_info
, 0, size
);
1707 /* round up to nearest 4K */
1708 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1709 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1711 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1715 tx_ring
->next_to_use
= 0;
1716 tx_ring
->next_to_clean
= 0;
1720 vfree(tx_ring
->buffer_info
);
1721 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1726 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1727 * @adapter: board private structure
1729 * Returns 0 on success, negative on failure
1731 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1733 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1734 struct e1000_buffer
*buffer_info
;
1735 int i
, size
, desc_len
, err
= -ENOMEM
;
1737 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1738 rx_ring
->buffer_info
= vmalloc(size
);
1739 if (!rx_ring
->buffer_info
)
1741 memset(rx_ring
->buffer_info
, 0, size
);
1743 for (i
= 0; i
< rx_ring
->count
; i
++) {
1744 buffer_info
= &rx_ring
->buffer_info
[i
];
1745 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1746 sizeof(struct e1000_ps_page
),
1748 if (!buffer_info
->ps_pages
)
1752 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1754 /* Round up to nearest 4K */
1755 rx_ring
->size
= rx_ring
->count
* desc_len
;
1756 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1758 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1762 rx_ring
->next_to_clean
= 0;
1763 rx_ring
->next_to_use
= 0;
1764 rx_ring
->rx_skb_top
= NULL
;
1769 for (i
= 0; i
< rx_ring
->count
; i
++) {
1770 buffer_info
= &rx_ring
->buffer_info
[i
];
1771 kfree(buffer_info
->ps_pages
);
1774 vfree(rx_ring
->buffer_info
);
1775 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1780 * e1000_clean_tx_ring - Free Tx Buffers
1781 * @adapter: board private structure
1783 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1785 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1786 struct e1000_buffer
*buffer_info
;
1790 for (i
= 0; i
< tx_ring
->count
; i
++) {
1791 buffer_info
= &tx_ring
->buffer_info
[i
];
1792 e1000_put_txbuf(adapter
, buffer_info
);
1795 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1796 memset(tx_ring
->buffer_info
, 0, size
);
1798 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1800 tx_ring
->next_to_use
= 0;
1801 tx_ring
->next_to_clean
= 0;
1803 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1804 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1808 * e1000e_free_tx_resources - Free Tx Resources per Queue
1809 * @adapter: board private structure
1811 * Free all transmit software resources
1813 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1815 struct pci_dev
*pdev
= adapter
->pdev
;
1816 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1818 e1000_clean_tx_ring(adapter
);
1820 vfree(tx_ring
->buffer_info
);
1821 tx_ring
->buffer_info
= NULL
;
1823 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1825 tx_ring
->desc
= NULL
;
1829 * e1000e_free_rx_resources - Free Rx Resources
1830 * @adapter: board private structure
1832 * Free all receive software resources
1835 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1837 struct pci_dev
*pdev
= adapter
->pdev
;
1838 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1841 e1000_clean_rx_ring(adapter
);
1843 for (i
= 0; i
< rx_ring
->count
; i
++) {
1844 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1847 vfree(rx_ring
->buffer_info
);
1848 rx_ring
->buffer_info
= NULL
;
1850 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1852 rx_ring
->desc
= NULL
;
1856 * e1000_update_itr - update the dynamic ITR value based on statistics
1857 * @adapter: pointer to adapter
1858 * @itr_setting: current adapter->itr
1859 * @packets: the number of packets during this measurement interval
1860 * @bytes: the number of bytes during this measurement interval
1862 * Stores a new ITR value based on packets and byte
1863 * counts during the last interrupt. The advantage of per interrupt
1864 * computation is faster updates and more accurate ITR for the current
1865 * traffic pattern. Constants in this function were computed
1866 * based on theoretical maximum wire speed and thresholds were set based
1867 * on testing data as well as attempting to minimize response time
1868 * while increasing bulk throughput. This functionality is controlled
1869 * by the InterruptThrottleRate module parameter.
1871 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1872 u16 itr_setting
, int packets
,
1875 unsigned int retval
= itr_setting
;
1878 goto update_itr_done
;
1880 switch (itr_setting
) {
1881 case lowest_latency
:
1882 /* handle TSO and jumbo frames */
1883 if (bytes
/packets
> 8000)
1884 retval
= bulk_latency
;
1885 else if ((packets
< 5) && (bytes
> 512)) {
1886 retval
= low_latency
;
1889 case low_latency
: /* 50 usec aka 20000 ints/s */
1890 if (bytes
> 10000) {
1891 /* this if handles the TSO accounting */
1892 if (bytes
/packets
> 8000) {
1893 retval
= bulk_latency
;
1894 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1895 retval
= bulk_latency
;
1896 } else if ((packets
> 35)) {
1897 retval
= lowest_latency
;
1899 } else if (bytes
/packets
> 2000) {
1900 retval
= bulk_latency
;
1901 } else if (packets
<= 2 && bytes
< 512) {
1902 retval
= lowest_latency
;
1905 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1906 if (bytes
> 25000) {
1908 retval
= low_latency
;
1910 } else if (bytes
< 6000) {
1911 retval
= low_latency
;
1920 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1922 struct e1000_hw
*hw
= &adapter
->hw
;
1924 u32 new_itr
= adapter
->itr
;
1926 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1927 if (adapter
->link_speed
!= SPEED_1000
) {
1933 adapter
->tx_itr
= e1000_update_itr(adapter
,
1935 adapter
->total_tx_packets
,
1936 adapter
->total_tx_bytes
);
1937 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1938 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1939 adapter
->tx_itr
= low_latency
;
1941 adapter
->rx_itr
= e1000_update_itr(adapter
,
1943 adapter
->total_rx_packets
,
1944 adapter
->total_rx_bytes
);
1945 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1946 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1947 adapter
->rx_itr
= low_latency
;
1949 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1951 switch (current_itr
) {
1952 /* counts and packets in update_itr are dependent on these numbers */
1953 case lowest_latency
:
1957 new_itr
= 20000; /* aka hwitr = ~200 */
1967 if (new_itr
!= adapter
->itr
) {
1969 * this attempts to bias the interrupt rate towards Bulk
1970 * by adding intermediate steps when interrupt rate is
1973 new_itr
= new_itr
> adapter
->itr
?
1974 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1976 adapter
->itr
= new_itr
;
1977 adapter
->rx_ring
->itr_val
= new_itr
;
1978 if (adapter
->msix_entries
)
1979 adapter
->rx_ring
->set_itr
= 1;
1981 ew32(ITR
, 1000000000 / (new_itr
* 256));
1986 * e1000_alloc_queues - Allocate memory for all rings
1987 * @adapter: board private structure to initialize
1989 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1991 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1992 if (!adapter
->tx_ring
)
1995 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1996 if (!adapter
->rx_ring
)
2001 e_err("Unable to allocate memory for queues\n");
2002 kfree(adapter
->rx_ring
);
2003 kfree(adapter
->tx_ring
);
2008 * e1000_clean - NAPI Rx polling callback
2009 * @napi: struct associated with this polling callback
2010 * @budget: amount of packets driver is allowed to process this poll
2012 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2014 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2015 struct e1000_hw
*hw
= &adapter
->hw
;
2016 struct net_device
*poll_dev
= adapter
->netdev
;
2017 int tx_cleaned
= 1, work_done
= 0;
2019 adapter
= netdev_priv(poll_dev
);
2021 if (adapter
->msix_entries
&&
2022 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2025 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2028 adapter
->clean_rx(adapter
, &work_done
, budget
);
2033 /* If budget not fully consumed, exit the polling mode */
2034 if (work_done
< budget
) {
2035 if (adapter
->itr_setting
& 3)
2036 e1000_set_itr(adapter
);
2037 napi_complete(napi
);
2038 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2039 if (adapter
->msix_entries
)
2040 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2042 e1000_irq_enable(adapter
);
2049 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2051 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2052 struct e1000_hw
*hw
= &adapter
->hw
;
2055 /* don't update vlan cookie if already programmed */
2056 if ((adapter
->hw
.mng_cookie
.status
&
2057 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2058 (vid
== adapter
->mng_vlan_id
))
2061 /* add VID to filter table */
2062 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2063 index
= (vid
>> 5) & 0x7F;
2064 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2065 vfta
|= (1 << (vid
& 0x1F));
2066 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2070 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2072 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2073 struct e1000_hw
*hw
= &adapter
->hw
;
2076 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2077 e1000_irq_disable(adapter
);
2078 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2080 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2081 e1000_irq_enable(adapter
);
2083 if ((adapter
->hw
.mng_cookie
.status
&
2084 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2085 (vid
== adapter
->mng_vlan_id
)) {
2086 /* release control to f/w */
2087 e1000_release_hw_control(adapter
);
2091 /* remove VID from filter table */
2092 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2093 index
= (vid
>> 5) & 0x7F;
2094 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2095 vfta
&= ~(1 << (vid
& 0x1F));
2096 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2100 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2102 struct net_device
*netdev
= adapter
->netdev
;
2103 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2104 u16 old_vid
= adapter
->mng_vlan_id
;
2106 if (!adapter
->vlgrp
)
2109 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2110 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2111 if (adapter
->hw
.mng_cookie
.status
&
2112 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2113 e1000_vlan_rx_add_vid(netdev
, vid
);
2114 adapter
->mng_vlan_id
= vid
;
2117 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2119 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2120 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2122 adapter
->mng_vlan_id
= vid
;
2127 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2128 struct vlan_group
*grp
)
2130 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2131 struct e1000_hw
*hw
= &adapter
->hw
;
2134 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2135 e1000_irq_disable(adapter
);
2136 adapter
->vlgrp
= grp
;
2139 /* enable VLAN tag insert/strip */
2141 ctrl
|= E1000_CTRL_VME
;
2144 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2145 /* enable VLAN receive filtering */
2147 rctl
&= ~E1000_RCTL_CFIEN
;
2149 e1000_update_mng_vlan(adapter
);
2152 /* disable VLAN tag insert/strip */
2154 ctrl
&= ~E1000_CTRL_VME
;
2157 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2158 if (adapter
->mng_vlan_id
!=
2159 (u16
)E1000_MNG_VLAN_NONE
) {
2160 e1000_vlan_rx_kill_vid(netdev
,
2161 adapter
->mng_vlan_id
);
2162 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2167 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2168 e1000_irq_enable(adapter
);
2171 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2175 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2177 if (!adapter
->vlgrp
)
2180 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2181 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2183 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2187 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
2189 struct e1000_hw
*hw
= &adapter
->hw
;
2192 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2198 * enable receiving management packets to the host. this will probably
2199 * generate destination unreachable messages from the host OS, but
2200 * the packets will be handled on SMBUS
2202 manc
|= E1000_MANC_EN_MNG2HOST
;
2203 manc2h
= er32(MANC2H
);
2204 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2205 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2206 manc2h
|= E1000_MNG2HOST_PORT_623
;
2207 manc2h
|= E1000_MNG2HOST_PORT_664
;
2208 ew32(MANC2H
, manc2h
);
2213 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2214 * @adapter: board private structure
2216 * Configure the Tx unit of the MAC after a reset.
2218 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2220 struct e1000_hw
*hw
= &adapter
->hw
;
2221 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2223 u32 tdlen
, tctl
, tipg
, tarc
;
2226 /* Setup the HW Tx Head and Tail descriptor pointers */
2227 tdba
= tx_ring
->dma
;
2228 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2229 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2230 ew32(TDBAH
, (tdba
>> 32));
2234 tx_ring
->head
= E1000_TDH
;
2235 tx_ring
->tail
= E1000_TDT
;
2237 /* Set the default values for the Tx Inter Packet Gap timer */
2238 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2239 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2240 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2242 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2243 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2245 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2246 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2249 /* Set the Tx Interrupt Delay register */
2250 ew32(TIDV
, adapter
->tx_int_delay
);
2251 /* Tx irq moderation */
2252 ew32(TADV
, adapter
->tx_abs_int_delay
);
2254 /* Program the Transmit Control Register */
2256 tctl
&= ~E1000_TCTL_CT
;
2257 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2258 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2260 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2261 tarc
= er32(TARC(0));
2263 * set the speed mode bit, we'll clear it if we're not at
2264 * gigabit link later
2266 #define SPEED_MODE_BIT (1 << 21)
2267 tarc
|= SPEED_MODE_BIT
;
2268 ew32(TARC(0), tarc
);
2271 /* errata: program both queues to unweighted RR */
2272 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2273 tarc
= er32(TARC(0));
2275 ew32(TARC(0), tarc
);
2276 tarc
= er32(TARC(1));
2278 ew32(TARC(1), tarc
);
2281 /* Setup Transmit Descriptor Settings for eop descriptor */
2282 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2284 /* only set IDE if we are delaying interrupts using the timers */
2285 if (adapter
->tx_int_delay
)
2286 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2288 /* enable Report Status bit */
2289 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2293 e1000e_config_collision_dist(hw
);
2295 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
2299 * e1000_setup_rctl - configure the receive control registers
2300 * @adapter: Board private structure
2302 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2303 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2304 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2306 struct e1000_hw
*hw
= &adapter
->hw
;
2311 /* Program MC offset vector base */
2313 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2314 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2315 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2316 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2318 /* Do not Store bad packets */
2319 rctl
&= ~E1000_RCTL_SBP
;
2321 /* Enable Long Packet receive */
2322 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2323 rctl
&= ~E1000_RCTL_LPE
;
2325 rctl
|= E1000_RCTL_LPE
;
2327 /* Some systems expect that the CRC is included in SMBUS traffic. The
2328 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2329 * host memory when this is enabled
2331 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2332 rctl
|= E1000_RCTL_SECRC
;
2334 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2335 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
2338 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
2340 phy_data
|= (1 << 2);
2341 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
2343 e1e_rphy(hw
, 22, &phy_data
);
2345 phy_data
|= (1 << 14);
2346 e1e_wphy(hw
, 0x10, 0x2823);
2347 e1e_wphy(hw
, 0x11, 0x0003);
2348 e1e_wphy(hw
, 22, phy_data
);
2351 /* Setup buffer sizes */
2352 rctl
&= ~E1000_RCTL_SZ_4096
;
2353 rctl
|= E1000_RCTL_BSEX
;
2354 switch (adapter
->rx_buffer_len
) {
2357 rctl
|= E1000_RCTL_SZ_2048
;
2358 rctl
&= ~E1000_RCTL_BSEX
;
2361 rctl
|= E1000_RCTL_SZ_4096
;
2364 rctl
|= E1000_RCTL_SZ_8192
;
2367 rctl
|= E1000_RCTL_SZ_16384
;
2372 * 82571 and greater support packet-split where the protocol
2373 * header is placed in skb->data and the packet data is
2374 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2375 * In the case of a non-split, skb->data is linearly filled,
2376 * followed by the page buffers. Therefore, skb->data is
2377 * sized to hold the largest protocol header.
2379 * allocations using alloc_page take too long for regular MTU
2380 * so only enable packet split for jumbo frames
2382 * Using pages when the page size is greater than 16k wastes
2383 * a lot of memory, since we allocate 3 pages at all times
2386 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2387 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2388 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2389 adapter
->rx_ps_pages
= pages
;
2391 adapter
->rx_ps_pages
= 0;
2393 if (adapter
->rx_ps_pages
) {
2394 /* Configure extra packet-split registers */
2395 rfctl
= er32(RFCTL
);
2396 rfctl
|= E1000_RFCTL_EXTEN
;
2398 * disable packet split support for IPv6 extension headers,
2399 * because some malformed IPv6 headers can hang the Rx
2401 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2402 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2406 /* Enable Packet split descriptors */
2407 rctl
|= E1000_RCTL_DTYP_PS
;
2409 psrctl
|= adapter
->rx_ps_bsize0
>>
2410 E1000_PSRCTL_BSIZE0_SHIFT
;
2412 switch (adapter
->rx_ps_pages
) {
2414 psrctl
|= PAGE_SIZE
<<
2415 E1000_PSRCTL_BSIZE3_SHIFT
;
2417 psrctl
|= PAGE_SIZE
<<
2418 E1000_PSRCTL_BSIZE2_SHIFT
;
2420 psrctl
|= PAGE_SIZE
>>
2421 E1000_PSRCTL_BSIZE1_SHIFT
;
2425 ew32(PSRCTL
, psrctl
);
2429 /* just started the receive unit, no need to restart */
2430 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2434 * e1000_configure_rx - Configure Receive Unit after Reset
2435 * @adapter: board private structure
2437 * Configure the Rx unit of the MAC after a reset.
2439 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2441 struct e1000_hw
*hw
= &adapter
->hw
;
2442 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2444 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2446 if (adapter
->rx_ps_pages
) {
2447 /* this is a 32 byte descriptor */
2448 rdlen
= rx_ring
->count
*
2449 sizeof(union e1000_rx_desc_packet_split
);
2450 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2451 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2452 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2453 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2454 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2455 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2457 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2458 adapter
->clean_rx
= e1000_clean_rx_irq
;
2459 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2462 /* disable receives while setting up the descriptors */
2464 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2468 /* set the Receive Delay Timer Register */
2469 ew32(RDTR
, adapter
->rx_int_delay
);
2471 /* irq moderation */
2472 ew32(RADV
, adapter
->rx_abs_int_delay
);
2473 if (adapter
->itr_setting
!= 0)
2474 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2476 ctrl_ext
= er32(CTRL_EXT
);
2477 /* Auto-Mask interrupts upon ICR access */
2478 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2479 ew32(IAM
, 0xffffffff);
2480 ew32(CTRL_EXT
, ctrl_ext
);
2484 * Setup the HW Rx Head and Tail Descriptor Pointers and
2485 * the Base and Length of the Rx Descriptor Ring
2487 rdba
= rx_ring
->dma
;
2488 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
2489 ew32(RDBAH
, (rdba
>> 32));
2493 rx_ring
->head
= E1000_RDH
;
2494 rx_ring
->tail
= E1000_RDT
;
2496 /* Enable Receive Checksum Offload for TCP and UDP */
2497 rxcsum
= er32(RXCSUM
);
2498 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2499 rxcsum
|= E1000_RXCSUM_TUOFL
;
2502 * IPv4 payload checksum for UDP fragments must be
2503 * used in conjunction with packet-split.
2505 if (adapter
->rx_ps_pages
)
2506 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2508 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2509 /* no need to clear IPPCSE as it defaults to 0 */
2511 ew32(RXCSUM
, rxcsum
);
2514 * Enable early receives on supported devices, only takes effect when
2515 * packet size is equal or larger than the specified value (in 8 byte
2516 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2518 if (adapter
->flags
& FLAG_HAS_ERT
) {
2519 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2520 u32 rxdctl
= er32(RXDCTL(0));
2521 ew32(RXDCTL(0), rxdctl
| 0x3);
2522 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2524 * With jumbo frames and early-receive enabled,
2525 * excessive C-state transition latencies result in
2526 * dropped transactions.
2528 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2529 adapter
->netdev
->name
, 55);
2531 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2532 adapter
->netdev
->name
,
2533 PM_QOS_DEFAULT_VALUE
);
2537 /* Enable Receives */
2542 * e1000_update_mc_addr_list - Update Multicast addresses
2543 * @hw: pointer to the HW structure
2544 * @mc_addr_list: array of multicast addresses to program
2545 * @mc_addr_count: number of multicast addresses to program
2546 * @rar_used_count: the first RAR register free to program
2547 * @rar_count: total number of supported Receive Address Registers
2549 * Updates the Receive Address Registers and Multicast Table Array.
2550 * The caller must have a packed mc_addr_list of multicast addresses.
2551 * The parameter rar_count will usually be hw->mac.rar_entry_count
2552 * unless there are workarounds that change this. Currently no func pointer
2553 * exists and all implementations are handled in the generic version of this
2556 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2557 u32 mc_addr_count
, u32 rar_used_count
,
2560 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2561 rar_used_count
, rar_count
);
2565 * e1000_set_multi - Multicast and Promiscuous mode set
2566 * @netdev: network interface device structure
2568 * The set_multi entry point is called whenever the multicast address
2569 * list or the network interface flags are updated. This routine is
2570 * responsible for configuring the hardware for proper multicast,
2571 * promiscuous mode, and all-multi behavior.
2573 static void e1000_set_multi(struct net_device
*netdev
)
2575 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2576 struct e1000_hw
*hw
= &adapter
->hw
;
2577 struct e1000_mac_info
*mac
= &hw
->mac
;
2578 struct dev_mc_list
*mc_ptr
;
2583 /* Check for Promiscuous and All Multicast modes */
2587 if (netdev
->flags
& IFF_PROMISC
) {
2588 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2589 rctl
&= ~E1000_RCTL_VFE
;
2591 if (netdev
->flags
& IFF_ALLMULTI
) {
2592 rctl
|= E1000_RCTL_MPE
;
2593 rctl
&= ~E1000_RCTL_UPE
;
2595 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2597 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2598 rctl
|= E1000_RCTL_VFE
;
2603 if (netdev
->mc_count
) {
2604 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2608 /* prepare a packed array of only addresses. */
2609 mc_ptr
= netdev
->mc_list
;
2611 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2614 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2616 mc_ptr
= mc_ptr
->next
;
2619 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2620 mac
->rar_entry_count
);
2624 * if we're called from probe, we might not have
2625 * anything to do here, so clear out the list
2627 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2632 * e1000_configure - configure the hardware for Rx and Tx
2633 * @adapter: private board structure
2635 static void e1000_configure(struct e1000_adapter
*adapter
)
2637 e1000_set_multi(adapter
->netdev
);
2639 e1000_restore_vlan(adapter
);
2640 e1000_init_manageability(adapter
);
2642 e1000_configure_tx(adapter
);
2643 e1000_setup_rctl(adapter
);
2644 e1000_configure_rx(adapter
);
2645 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2649 * e1000e_power_up_phy - restore link in case the phy was powered down
2650 * @adapter: address of board private structure
2652 * The phy may be powered down to save power and turn off link when the
2653 * driver is unloaded and wake on lan is not enabled (among others)
2654 * *** this routine MUST be followed by a call to e1000e_reset ***
2656 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2658 if (adapter
->hw
.phy
.ops
.power_up
)
2659 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
2661 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2665 * e1000_power_down_phy - Power down the PHY
2667 * Power down the PHY so no link is implied when interface is down.
2668 * The PHY cannot be powered down if management or WoL is active.
2670 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2672 /* WoL is enabled */
2676 if (adapter
->hw
.phy
.ops
.power_down
)
2677 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
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 (hw
->mac
.type
== e1000_pchlan
) {
2764 * Workaround PCH LOM adapter hangs with certain network
2765 * loads. If hangs persist, try disabling Tx flow control.
2767 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2768 fc
->high_water
= 0x3500;
2769 fc
->low_water
= 0x1500;
2771 fc
->high_water
= 0x5000;
2772 fc
->low_water
= 0x3000;
2775 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2776 (adapter
->netdev
->mtu
> ETH_DATA_LEN
))
2777 hwm
= min(((pba
<< 10) * 9 / 10),
2778 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2780 hwm
= min(((pba
<< 10) * 9 / 10),
2781 ((pba
<< 10) - adapter
->max_frame_size
));
2783 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
2784 fc
->low_water
= fc
->high_water
- 8;
2787 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2788 fc
->pause_time
= 0xFFFF;
2790 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2792 fc
->current_mode
= fc
->requested_mode
;
2794 /* Allow time for pending master requests to run */
2795 mac
->ops
.reset_hw(hw
);
2798 * For parts with AMT enabled, let the firmware know
2799 * that the network interface is in control
2801 if (adapter
->flags
& FLAG_HAS_AMT
)
2802 e1000_get_hw_control(adapter
);
2805 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
)
2806 e1e_wphy(&adapter
->hw
, BM_WUC
, 0);
2808 if (mac
->ops
.init_hw(hw
))
2809 e_err("Hardware Error\n");
2811 /* additional part of the flow-control workaround above */
2812 if (hw
->mac
.type
== e1000_pchlan
)
2813 ew32(FCRTV_PCH
, 0x1000);
2815 e1000_update_mng_vlan(adapter
);
2817 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2818 ew32(VET
, ETH_P_8021Q
);
2820 e1000e_reset_adaptive(hw
);
2821 e1000_get_phy_info(hw
);
2823 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
2824 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2827 * speed up time to link by disabling smart power down, ignore
2828 * the return value of this function because there is nothing
2829 * different we would do if it failed
2831 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2832 phy_data
&= ~IGP02E1000_PM_SPD
;
2833 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2837 int e1000e_up(struct e1000_adapter
*adapter
)
2839 struct e1000_hw
*hw
= &adapter
->hw
;
2841 /* DMA latency requirement to workaround early-receive/jumbo issue */
2842 if (adapter
->flags
& FLAG_HAS_ERT
)
2843 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
,
2844 adapter
->netdev
->name
,
2845 PM_QOS_DEFAULT_VALUE
);
2847 /* hardware has been reset, we need to reload some things */
2848 e1000_configure(adapter
);
2850 clear_bit(__E1000_DOWN
, &adapter
->state
);
2852 napi_enable(&adapter
->napi
);
2853 if (adapter
->msix_entries
)
2854 e1000_configure_msix(adapter
);
2855 e1000_irq_enable(adapter
);
2857 netif_wake_queue(adapter
->netdev
);
2859 /* fire a link change interrupt to start the watchdog */
2860 ew32(ICS
, E1000_ICS_LSC
);
2864 void e1000e_down(struct e1000_adapter
*adapter
)
2866 struct net_device
*netdev
= adapter
->netdev
;
2867 struct e1000_hw
*hw
= &adapter
->hw
;
2871 * signal that we're down so the interrupt handler does not
2872 * reschedule our watchdog timer
2874 set_bit(__E1000_DOWN
, &adapter
->state
);
2876 /* disable receives in the hardware */
2878 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2879 /* flush and sleep below */
2881 netif_stop_queue(netdev
);
2883 /* disable transmits in the hardware */
2885 tctl
&= ~E1000_TCTL_EN
;
2887 /* flush both disables and wait for them to finish */
2891 napi_disable(&adapter
->napi
);
2892 e1000_irq_disable(adapter
);
2894 del_timer_sync(&adapter
->watchdog_timer
);
2895 del_timer_sync(&adapter
->phy_info_timer
);
2897 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2898 netif_carrier_off(netdev
);
2899 adapter
->link_speed
= 0;
2900 adapter
->link_duplex
= 0;
2902 if (!pci_channel_offline(adapter
->pdev
))
2903 e1000e_reset(adapter
);
2904 e1000_clean_tx_ring(adapter
);
2905 e1000_clean_rx_ring(adapter
);
2907 if (adapter
->flags
& FLAG_HAS_ERT
)
2908 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
,
2909 adapter
->netdev
->name
);
2912 * TODO: for power management, we could drop the link and
2913 * pci_disable_device here.
2917 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2920 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2922 e1000e_down(adapter
);
2924 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2928 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2929 * @adapter: board private structure to initialize
2931 * e1000_sw_init initializes the Adapter private data structure.
2932 * Fields are initialized based on PCI device information and
2933 * OS network device settings (MTU size).
2935 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2937 struct net_device
*netdev
= adapter
->netdev
;
2939 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2940 adapter
->rx_ps_bsize0
= 128;
2941 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2942 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2944 e1000e_set_interrupt_capability(adapter
);
2946 if (e1000_alloc_queues(adapter
))
2949 /* Explicitly disable IRQ since the NIC can be in any state. */
2950 e1000_irq_disable(adapter
);
2952 set_bit(__E1000_DOWN
, &adapter
->state
);
2957 * e1000_intr_msi_test - Interrupt Handler
2958 * @irq: interrupt number
2959 * @data: pointer to a network interface device structure
2961 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
2963 struct net_device
*netdev
= data
;
2964 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2965 struct e1000_hw
*hw
= &adapter
->hw
;
2966 u32 icr
= er32(ICR
);
2968 e_dbg("icr is %08X\n", icr
);
2969 if (icr
& E1000_ICR_RXSEQ
) {
2970 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
2978 * e1000_test_msi_interrupt - Returns 0 for successful test
2979 * @adapter: board private struct
2981 * code flow taken from tg3.c
2983 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
2985 struct net_device
*netdev
= adapter
->netdev
;
2986 struct e1000_hw
*hw
= &adapter
->hw
;
2989 /* poll_enable hasn't been called yet, so don't need disable */
2990 /* clear any pending events */
2993 /* free the real vector and request a test handler */
2994 e1000_free_irq(adapter
);
2995 e1000e_reset_interrupt_capability(adapter
);
2997 /* Assume that the test fails, if it succeeds then the test
2998 * MSI irq handler will unset this flag */
2999 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
3001 err
= pci_enable_msi(adapter
->pdev
);
3003 goto msi_test_failed
;
3005 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
3006 netdev
->name
, netdev
);
3008 pci_disable_msi(adapter
->pdev
);
3009 goto msi_test_failed
;
3014 e1000_irq_enable(adapter
);
3016 /* fire an unusual interrupt on the test handler */
3017 ew32(ICS
, E1000_ICS_RXSEQ
);
3021 e1000_irq_disable(adapter
);
3025 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3026 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3028 e_info("MSI interrupt test failed!\n");
3031 free_irq(adapter
->pdev
->irq
, netdev
);
3032 pci_disable_msi(adapter
->pdev
);
3035 goto msi_test_failed
;
3037 /* okay so the test worked, restore settings */
3038 e_dbg("MSI interrupt test succeeded!\n");
3040 e1000e_set_interrupt_capability(adapter
);
3041 e1000_request_irq(adapter
);
3046 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3047 * @adapter: board private struct
3049 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3051 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3056 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3059 /* disable SERR in case the MSI write causes a master abort */
3060 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3061 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3062 pci_cmd
& ~PCI_COMMAND_SERR
);
3064 err
= e1000_test_msi_interrupt(adapter
);
3066 /* restore previous setting of command word */
3067 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3073 /* EIO means MSI test failed */
3077 /* back to INTx mode */
3078 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3080 e1000_free_irq(adapter
);
3082 err
= e1000_request_irq(adapter
);
3088 * e1000_open - Called when a network interface is made active
3089 * @netdev: network interface device structure
3091 * Returns 0 on success, negative value on failure
3093 * The open entry point is called when a network interface is made
3094 * active by the system (IFF_UP). At this point all resources needed
3095 * for transmit and receive operations are allocated, the interrupt
3096 * handler is registered with the OS, the watchdog timer is started,
3097 * and the stack is notified that the interface is ready.
3099 static int e1000_open(struct net_device
*netdev
)
3101 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3102 struct e1000_hw
*hw
= &adapter
->hw
;
3105 /* disallow open during test */
3106 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3109 netif_carrier_off(netdev
);
3111 /* allocate transmit descriptors */
3112 err
= e1000e_setup_tx_resources(adapter
);
3116 /* allocate receive descriptors */
3117 err
= e1000e_setup_rx_resources(adapter
);
3121 e1000e_power_up_phy(adapter
);
3123 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3124 if ((adapter
->hw
.mng_cookie
.status
&
3125 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3126 e1000_update_mng_vlan(adapter
);
3129 * If AMT is enabled, let the firmware know that the network
3130 * interface is now open
3132 if (adapter
->flags
& FLAG_HAS_AMT
)
3133 e1000_get_hw_control(adapter
);
3136 * before we allocate an interrupt, we must be ready to handle it.
3137 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3138 * as soon as we call pci_request_irq, so we have to setup our
3139 * clean_rx handler before we do so.
3141 e1000_configure(adapter
);
3143 err
= e1000_request_irq(adapter
);
3148 * Work around PCIe errata with MSI interrupts causing some chipsets to
3149 * ignore e1000e MSI messages, which means we need to test our MSI
3152 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3153 err
= e1000_test_msi(adapter
);
3155 e_err("Interrupt allocation failed\n");
3160 /* From here on the code is the same as e1000e_up() */
3161 clear_bit(__E1000_DOWN
, &adapter
->state
);
3163 napi_enable(&adapter
->napi
);
3165 e1000_irq_enable(adapter
);
3167 netif_start_queue(netdev
);
3169 /* fire a link status change interrupt to start the watchdog */
3170 ew32(ICS
, E1000_ICS_LSC
);
3175 e1000_release_hw_control(adapter
);
3176 e1000_power_down_phy(adapter
);
3177 e1000e_free_rx_resources(adapter
);
3179 e1000e_free_tx_resources(adapter
);
3181 e1000e_reset(adapter
);
3187 * e1000_close - Disables a network interface
3188 * @netdev: network interface device structure
3190 * Returns 0, this is not allowed to fail
3192 * The close entry point is called when an interface is de-activated
3193 * by the OS. The hardware is still under the drivers control, but
3194 * needs to be disabled. A global MAC reset is issued to stop the
3195 * hardware, and all transmit and receive resources are freed.
3197 static int e1000_close(struct net_device
*netdev
)
3199 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3201 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3202 e1000e_down(adapter
);
3203 e1000_power_down_phy(adapter
);
3204 e1000_free_irq(adapter
);
3206 e1000e_free_tx_resources(adapter
);
3207 e1000e_free_rx_resources(adapter
);
3210 * kill manageability vlan ID if supported, but not if a vlan with
3211 * the same ID is registered on the host OS (let 8021q kill it)
3213 if ((adapter
->hw
.mng_cookie
.status
&
3214 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3216 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3217 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3220 * If AMT is enabled, let the firmware know that the network
3221 * interface is now closed
3223 if (adapter
->flags
& FLAG_HAS_AMT
)
3224 e1000_release_hw_control(adapter
);
3229 * e1000_set_mac - Change the Ethernet Address of the NIC
3230 * @netdev: network interface device structure
3231 * @p: pointer to an address structure
3233 * Returns 0 on success, negative on failure
3235 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3237 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3238 struct sockaddr
*addr
= p
;
3240 if (!is_valid_ether_addr(addr
->sa_data
))
3241 return -EADDRNOTAVAIL
;
3243 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3244 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3246 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3248 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3249 /* activate the work around */
3250 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3253 * Hold a copy of the LAA in RAR[14] This is done so that
3254 * between the time RAR[0] gets clobbered and the time it
3255 * gets fixed (in e1000_watchdog), the actual LAA is in one
3256 * of the RARs and no incoming packets directed to this port
3257 * are dropped. Eventually the LAA will be in RAR[0] and
3260 e1000e_rar_set(&adapter
->hw
,
3261 adapter
->hw
.mac
.addr
,
3262 adapter
->hw
.mac
.rar_entry_count
- 1);
3269 * e1000e_update_phy_task - work thread to update phy
3270 * @work: pointer to our work struct
3272 * this worker thread exists because we must acquire a
3273 * semaphore to read the phy, which we could msleep while
3274 * waiting for it, and we can't msleep in a timer.
3276 static void e1000e_update_phy_task(struct work_struct
*work
)
3278 struct e1000_adapter
*adapter
= container_of(work
,
3279 struct e1000_adapter
, update_phy_task
);
3280 e1000_get_phy_info(&adapter
->hw
);
3284 * Need to wait a few seconds after link up to get diagnostic information from
3287 static void e1000_update_phy_info(unsigned long data
)
3289 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3290 schedule_work(&adapter
->update_phy_task
);
3294 * e1000e_update_stats - Update the board statistics counters
3295 * @adapter: board private structure
3297 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3299 struct net_device
*netdev
= adapter
->netdev
;
3300 struct e1000_hw
*hw
= &adapter
->hw
;
3301 struct pci_dev
*pdev
= adapter
->pdev
;
3305 * Prevent stats update while adapter is being reset, or if the pci
3306 * connection is down.
3308 if (adapter
->link_speed
== 0)
3310 if (pci_channel_offline(pdev
))
3313 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3314 adapter
->stats
.gprc
+= er32(GPRC
);
3315 adapter
->stats
.gorc
+= er32(GORCL
);
3316 er32(GORCH
); /* Clear gorc */
3317 adapter
->stats
.bprc
+= er32(BPRC
);
3318 adapter
->stats
.mprc
+= er32(MPRC
);
3319 adapter
->stats
.roc
+= er32(ROC
);
3321 adapter
->stats
.mpc
+= er32(MPC
);
3322 if ((hw
->phy
.type
== e1000_phy_82578
) ||
3323 (hw
->phy
.type
== e1000_phy_82577
)) {
3324 e1e_rphy(hw
, HV_SCC_UPPER
, &phy_data
);
3325 if (!e1e_rphy(hw
, HV_SCC_LOWER
, &phy_data
))
3326 adapter
->stats
.scc
+= phy_data
;
3328 e1e_rphy(hw
, HV_ECOL_UPPER
, &phy_data
);
3329 if (!e1e_rphy(hw
, HV_ECOL_LOWER
, &phy_data
))
3330 adapter
->stats
.ecol
+= phy_data
;
3332 e1e_rphy(hw
, HV_MCC_UPPER
, &phy_data
);
3333 if (!e1e_rphy(hw
, HV_MCC_LOWER
, &phy_data
))
3334 adapter
->stats
.mcc
+= phy_data
;
3336 e1e_rphy(hw
, HV_LATECOL_UPPER
, &phy_data
);
3337 if (!e1e_rphy(hw
, HV_LATECOL_LOWER
, &phy_data
))
3338 adapter
->stats
.latecol
+= phy_data
;
3340 e1e_rphy(hw
, HV_DC_UPPER
, &phy_data
);
3341 if (!e1e_rphy(hw
, HV_DC_LOWER
, &phy_data
))
3342 adapter
->stats
.dc
+= phy_data
;
3344 adapter
->stats
.scc
+= er32(SCC
);
3345 adapter
->stats
.ecol
+= er32(ECOL
);
3346 adapter
->stats
.mcc
+= er32(MCC
);
3347 adapter
->stats
.latecol
+= er32(LATECOL
);
3348 adapter
->stats
.dc
+= er32(DC
);
3350 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3351 adapter
->stats
.xontxc
+= er32(XONTXC
);
3352 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3353 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3354 adapter
->stats
.gptc
+= er32(GPTC
);
3355 adapter
->stats
.gotc
+= er32(GOTCL
);
3356 er32(GOTCH
); /* Clear gotc */
3357 adapter
->stats
.rnbc
+= er32(RNBC
);
3358 adapter
->stats
.ruc
+= er32(RUC
);
3360 adapter
->stats
.mptc
+= er32(MPTC
);
3361 adapter
->stats
.bptc
+= er32(BPTC
);
3363 /* used for adaptive IFS */
3365 hw
->mac
.tx_packet_delta
= er32(TPT
);
3366 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3367 if ((hw
->phy
.type
== e1000_phy_82578
) ||
3368 (hw
->phy
.type
== e1000_phy_82577
)) {
3369 e1e_rphy(hw
, HV_COLC_UPPER
, &phy_data
);
3370 if (!e1e_rphy(hw
, HV_COLC_LOWER
, &phy_data
))
3371 hw
->mac
.collision_delta
= phy_data
;
3373 hw
->mac
.collision_delta
= er32(COLC
);
3375 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3377 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3378 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3379 if ((hw
->phy
.type
== e1000_phy_82578
) ||
3380 (hw
->phy
.type
== e1000_phy_82577
)) {
3381 e1e_rphy(hw
, HV_TNCRS_UPPER
, &phy_data
);
3382 if (!e1e_rphy(hw
, HV_TNCRS_LOWER
, &phy_data
))
3383 adapter
->stats
.tncrs
+= phy_data
;
3385 if ((hw
->mac
.type
!= e1000_82574
) &&
3386 (hw
->mac
.type
!= e1000_82583
))
3387 adapter
->stats
.tncrs
+= er32(TNCRS
);
3389 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3390 adapter
->stats
.tsctc
+= er32(TSCTC
);
3391 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3393 /* Fill out the OS statistics structure */
3394 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
3395 netdev
->stats
.collisions
= adapter
->stats
.colc
;
3400 * RLEC on some newer hardware can be incorrect so build
3401 * our own version based on RUC and ROC
3403 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
3404 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3405 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3406 adapter
->stats
.cexterr
;
3407 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
3409 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3410 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3411 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3414 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+
3415 adapter
->stats
.latecol
;
3416 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3417 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
3418 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3420 /* Tx Dropped needs to be maintained elsewhere */
3422 /* Management Stats */
3423 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3424 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3425 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3429 * e1000_phy_read_status - Update the PHY register status snapshot
3430 * @adapter: board private structure
3432 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3434 struct e1000_hw
*hw
= &adapter
->hw
;
3435 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3438 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3439 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3440 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3441 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3442 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3443 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3444 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3445 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3446 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3447 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3449 e_warn("Error reading PHY register\n");
3452 * Do not read PHY registers if link is not up
3453 * Set values to typical power-on defaults
3455 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3456 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3457 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3459 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3460 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3462 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3463 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3465 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3469 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3471 struct e1000_hw
*hw
= &adapter
->hw
;
3472 u32 ctrl
= er32(CTRL
);
3474 /* Link status message must follow this format for user tools */
3475 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
3476 "Flow Control: %s\n",
3477 adapter
->netdev
->name
,
3478 adapter
->link_speed
,
3479 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3480 "Full Duplex" : "Half Duplex",
3481 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3483 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3484 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3487 bool e1000_has_link(struct e1000_adapter
*adapter
)
3489 struct e1000_hw
*hw
= &adapter
->hw
;
3490 bool link_active
= 0;
3494 * get_link_status is set on LSC (link status) interrupt or
3495 * Rx sequence error interrupt. get_link_status will stay
3496 * false until the check_for_link establishes link
3497 * for copper adapters ONLY
3499 switch (hw
->phy
.media_type
) {
3500 case e1000_media_type_copper
:
3501 if (hw
->mac
.get_link_status
) {
3502 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3503 link_active
= !hw
->mac
.get_link_status
;
3508 case e1000_media_type_fiber
:
3509 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3510 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
3512 case e1000_media_type_internal_serdes
:
3513 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3514 link_active
= adapter
->hw
.mac
.serdes_has_link
;
3517 case e1000_media_type_unknown
:
3521 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
3522 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
3523 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3524 e_info("Gigabit has been disabled, downgrading speed\n");
3530 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3532 /* make sure the receive unit is started */
3533 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3534 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3535 struct e1000_hw
*hw
= &adapter
->hw
;
3536 u32 rctl
= er32(RCTL
);
3537 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3538 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3543 * e1000_watchdog - Timer Call-back
3544 * @data: pointer to adapter cast into an unsigned long
3546 static void e1000_watchdog(unsigned long data
)
3548 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3550 /* Do the rest outside of interrupt context */
3551 schedule_work(&adapter
->watchdog_task
);
3553 /* TODO: make this use queue_delayed_work() */
3556 static void e1000_watchdog_task(struct work_struct
*work
)
3558 struct e1000_adapter
*adapter
= container_of(work
,
3559 struct e1000_adapter
, watchdog_task
);
3560 struct net_device
*netdev
= adapter
->netdev
;
3561 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3562 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
3563 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3564 struct e1000_hw
*hw
= &adapter
->hw
;
3568 link
= e1000_has_link(adapter
);
3569 if ((netif_carrier_ok(netdev
)) && link
) {
3570 e1000e_enable_receives(adapter
);
3574 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3575 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3576 e1000_update_mng_vlan(adapter
);
3579 if (!netif_carrier_ok(netdev
)) {
3581 /* update snapshot of PHY registers on LSC */
3582 e1000_phy_read_status(adapter
);
3583 mac
->ops
.get_link_up_info(&adapter
->hw
,
3584 &adapter
->link_speed
,
3585 &adapter
->link_duplex
);
3586 e1000_print_link_info(adapter
);
3588 * On supported PHYs, check for duplex mismatch only
3589 * if link has autonegotiated at 10/100 half
3591 if ((hw
->phy
.type
== e1000_phy_igp_3
||
3592 hw
->phy
.type
== e1000_phy_bm
) &&
3593 (hw
->mac
.autoneg
== true) &&
3594 (adapter
->link_speed
== SPEED_10
||
3595 adapter
->link_speed
== SPEED_100
) &&
3596 (adapter
->link_duplex
== HALF_DUPLEX
)) {
3599 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
3601 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
3602 e_info("Autonegotiated half duplex but"
3603 " link partner cannot autoneg. "
3604 " Try forcing full duplex if "
3605 "link gets many collisions.\n");
3609 * tweak tx_queue_len according to speed/duplex
3610 * and adjust the timeout factor
3612 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3613 adapter
->tx_timeout_factor
= 1;
3614 switch (adapter
->link_speed
) {
3617 netdev
->tx_queue_len
= 10;
3618 adapter
->tx_timeout_factor
= 16;
3622 netdev
->tx_queue_len
= 100;
3623 adapter
->tx_timeout_factor
= 10;
3628 * workaround: re-program speed mode bit after
3631 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3634 tarc0
= er32(TARC(0));
3635 tarc0
&= ~SPEED_MODE_BIT
;
3636 ew32(TARC(0), tarc0
);
3640 * disable TSO for pcie and 10/100 speeds, to avoid
3641 * some hardware issues
3643 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3644 switch (adapter
->link_speed
) {
3647 e_info("10/100 speed: disabling TSO\n");
3648 netdev
->features
&= ~NETIF_F_TSO
;
3649 netdev
->features
&= ~NETIF_F_TSO6
;
3652 netdev
->features
|= NETIF_F_TSO
;
3653 netdev
->features
|= NETIF_F_TSO6
;
3662 * enable transmits in the hardware, need to do this
3663 * after setting TARC(0)
3666 tctl
|= E1000_TCTL_EN
;
3670 * Perform any post-link-up configuration before
3671 * reporting link up.
3673 if (phy
->ops
.cfg_on_link_up
)
3674 phy
->ops
.cfg_on_link_up(hw
);
3676 netif_carrier_on(netdev
);
3678 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3679 mod_timer(&adapter
->phy_info_timer
,
3680 round_jiffies(jiffies
+ 2 * HZ
));
3683 if (netif_carrier_ok(netdev
)) {
3684 adapter
->link_speed
= 0;
3685 adapter
->link_duplex
= 0;
3686 /* Link status message must follow this format */
3687 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
3688 adapter
->netdev
->name
);
3689 netif_carrier_off(netdev
);
3690 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3691 mod_timer(&adapter
->phy_info_timer
,
3692 round_jiffies(jiffies
+ 2 * HZ
));
3694 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3695 schedule_work(&adapter
->reset_task
);
3700 e1000e_update_stats(adapter
);
3702 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3703 adapter
->tpt_old
= adapter
->stats
.tpt
;
3704 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3705 adapter
->colc_old
= adapter
->stats
.colc
;
3707 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3708 adapter
->gorc_old
= adapter
->stats
.gorc
;
3709 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3710 adapter
->gotc_old
= adapter
->stats
.gotc
;
3712 e1000e_update_adaptive(&adapter
->hw
);
3714 if (!netif_carrier_ok(netdev
)) {
3715 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3719 * We've lost link, so the controller stops DMA,
3720 * but we've got queued Tx work that's never going
3721 * to get done, so reset controller to flush Tx.
3722 * (Do the reset outside of interrupt context).
3724 adapter
->tx_timeout_count
++;
3725 schedule_work(&adapter
->reset_task
);
3726 /* return immediately since reset is imminent */
3731 /* Cause software interrupt to ensure Rx ring is cleaned */
3732 if (adapter
->msix_entries
)
3733 ew32(ICS
, adapter
->rx_ring
->ims_val
);
3735 ew32(ICS
, E1000_ICS_RXDMT0
);
3737 /* Force detection of hung controller every watchdog period */
3738 adapter
->detect_tx_hung
= 1;
3741 * With 82571 controllers, LAA may be overwritten due to controller
3742 * reset from the other port. Set the appropriate LAA in RAR[0]
3744 if (e1000e_get_laa_state_82571(hw
))
3745 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3747 /* Reset the timer */
3748 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3749 mod_timer(&adapter
->watchdog_timer
,
3750 round_jiffies(jiffies
+ 2 * HZ
));
3753 #define E1000_TX_FLAGS_CSUM 0x00000001
3754 #define E1000_TX_FLAGS_VLAN 0x00000002
3755 #define E1000_TX_FLAGS_TSO 0x00000004
3756 #define E1000_TX_FLAGS_IPV4 0x00000008
3757 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3758 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3760 static int e1000_tso(struct e1000_adapter
*adapter
,
3761 struct sk_buff
*skb
)
3763 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3764 struct e1000_context_desc
*context_desc
;
3765 struct e1000_buffer
*buffer_info
;
3768 u16 ipcse
= 0, tucse
, mss
;
3769 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3772 if (!skb_is_gso(skb
))
3775 if (skb_header_cloned(skb
)) {
3776 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3781 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3782 mss
= skb_shinfo(skb
)->gso_size
;
3783 if (skb
->protocol
== htons(ETH_P_IP
)) {
3784 struct iphdr
*iph
= ip_hdr(skb
);
3787 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
3789 cmd_length
= E1000_TXD_CMD_IP
;
3790 ipcse
= skb_transport_offset(skb
) - 1;
3791 } else if (skb_is_gso_v6(skb
)) {
3792 ipv6_hdr(skb
)->payload_len
= 0;
3793 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3794 &ipv6_hdr(skb
)->daddr
,
3798 ipcss
= skb_network_offset(skb
);
3799 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3800 tucss
= skb_transport_offset(skb
);
3801 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3804 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3805 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3807 i
= tx_ring
->next_to_use
;
3808 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3809 buffer_info
= &tx_ring
->buffer_info
[i
];
3811 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3812 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3813 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3814 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3815 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3816 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3817 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3818 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3819 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3821 buffer_info
->time_stamp
= jiffies
;
3822 buffer_info
->next_to_watch
= i
;
3825 if (i
== tx_ring
->count
)
3827 tx_ring
->next_to_use
= i
;
3832 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3834 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3835 struct e1000_context_desc
*context_desc
;
3836 struct e1000_buffer
*buffer_info
;
3839 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
3842 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
3845 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
3846 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
3848 protocol
= skb
->protocol
;
3851 case cpu_to_be16(ETH_P_IP
):
3852 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3853 cmd_len
|= E1000_TXD_CMD_TCP
;
3855 case cpu_to_be16(ETH_P_IPV6
):
3856 /* XXX not handling all IPV6 headers */
3857 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3858 cmd_len
|= E1000_TXD_CMD_TCP
;
3861 if (unlikely(net_ratelimit()))
3862 e_warn("checksum_partial proto=%x!\n",
3863 be16_to_cpu(protocol
));
3867 css
= skb_transport_offset(skb
);
3869 i
= tx_ring
->next_to_use
;
3870 buffer_info
= &tx_ring
->buffer_info
[i
];
3871 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3873 context_desc
->lower_setup
.ip_config
= 0;
3874 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3875 context_desc
->upper_setup
.tcp_fields
.tucso
=
3876 css
+ skb
->csum_offset
;
3877 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3878 context_desc
->tcp_seg_setup
.data
= 0;
3879 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
3881 buffer_info
->time_stamp
= jiffies
;
3882 buffer_info
->next_to_watch
= i
;
3885 if (i
== tx_ring
->count
)
3887 tx_ring
->next_to_use
= i
;
3892 #define E1000_MAX_PER_TXD 8192
3893 #define E1000_MAX_TXD_PWR 12
3895 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3896 struct sk_buff
*skb
, unsigned int first
,
3897 unsigned int max_per_txd
, unsigned int nr_frags
,
3900 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3901 struct pci_dev
*pdev
= adapter
->pdev
;
3902 struct e1000_buffer
*buffer_info
;
3903 unsigned int len
= skb_headlen(skb
);
3904 unsigned int offset
= 0, size
, count
= 0, i
;
3907 i
= tx_ring
->next_to_use
;
3910 buffer_info
= &tx_ring
->buffer_info
[i
];
3911 size
= min(len
, max_per_txd
);
3913 buffer_info
->length
= size
;
3914 buffer_info
->time_stamp
= jiffies
;
3915 buffer_info
->next_to_watch
= i
;
3916 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
+ offset
,
3917 size
, PCI_DMA_TODEVICE
);
3918 buffer_info
->mapped_as_page
= false;
3919 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
))
3928 if (i
== tx_ring
->count
)
3933 for (f
= 0; f
< nr_frags
; f
++) {
3934 struct skb_frag_struct
*frag
;
3936 frag
= &skb_shinfo(skb
)->frags
[f
];
3938 offset
= frag
->page_offset
;
3942 if (i
== tx_ring
->count
)
3945 buffer_info
= &tx_ring
->buffer_info
[i
];
3946 size
= min(len
, max_per_txd
);
3948 buffer_info
->length
= size
;
3949 buffer_info
->time_stamp
= jiffies
;
3950 buffer_info
->next_to_watch
= i
;
3951 buffer_info
->dma
= pci_map_page(pdev
, frag
->page
,
3954 buffer_info
->mapped_as_page
= true;
3955 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
))
3964 tx_ring
->buffer_info
[i
].skb
= skb
;
3965 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3970 dev_err(&pdev
->dev
, "TX DMA map failed\n");
3971 buffer_info
->dma
= 0;
3977 i
+= tx_ring
->count
;
3979 buffer_info
= &tx_ring
->buffer_info
[i
];
3980 e1000_put_txbuf(adapter
, buffer_info
);;
3986 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3987 int tx_flags
, int count
)
3989 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3990 struct e1000_tx_desc
*tx_desc
= NULL
;
3991 struct e1000_buffer
*buffer_info
;
3992 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3995 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3996 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3998 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4000 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
4001 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
4004 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
4005 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
4006 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
4009 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
4010 txd_lower
|= E1000_TXD_CMD_VLE
;
4011 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
4014 i
= tx_ring
->next_to_use
;
4017 buffer_info
= &tx_ring
->buffer_info
[i
];
4018 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4019 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4020 tx_desc
->lower
.data
=
4021 cpu_to_le32(txd_lower
| buffer_info
->length
);
4022 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
4025 if (i
== tx_ring
->count
)
4029 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
4032 * Force memory writes to complete before letting h/w
4033 * know there are new descriptors to fetch. (Only
4034 * applicable for weak-ordered memory model archs,
4039 tx_ring
->next_to_use
= i
;
4040 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
4042 * we need this if more than one processor can write to our tail
4043 * at a time, it synchronizes IO on IA64/Altix systems
4048 #define MINIMUM_DHCP_PACKET_SIZE 282
4049 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
4050 struct sk_buff
*skb
)
4052 struct e1000_hw
*hw
= &adapter
->hw
;
4055 if (vlan_tx_tag_present(skb
)) {
4056 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
4057 (adapter
->hw
.mng_cookie
.status
&
4058 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
4062 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
4065 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4069 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4072 if (ip
->protocol
!= IPPROTO_UDP
)
4075 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4076 if (ntohs(udp
->dest
) != 67)
4079 offset
= (u8
*)udp
+ 8 - skb
->data
;
4080 length
= skb
->len
- offset
;
4081 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4087 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4089 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4091 netif_stop_queue(netdev
);
4093 * Herbert's original patch had:
4094 * smp_mb__after_netif_stop_queue();
4095 * but since that doesn't exist yet, just open code it.
4100 * We need to check again in a case another CPU has just
4101 * made room available.
4103 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4107 netif_start_queue(netdev
);
4108 ++adapter
->restart_queue
;
4112 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4114 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4116 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4118 return __e1000_maybe_stop_tx(netdev
, size
);
4121 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4122 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
4123 struct net_device
*netdev
)
4125 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4126 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4128 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4129 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4130 unsigned int tx_flags
= 0;
4131 unsigned int len
= skb
->len
- skb
->data_len
;
4132 unsigned int nr_frags
;
4138 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4139 dev_kfree_skb_any(skb
);
4140 return NETDEV_TX_OK
;
4143 if (skb
->len
<= 0) {
4144 dev_kfree_skb_any(skb
);
4145 return NETDEV_TX_OK
;
4148 mss
= skb_shinfo(skb
)->gso_size
;
4150 * The controller does a simple calculation to
4151 * make sure there is enough room in the FIFO before
4152 * initiating the DMA for each buffer. The calc is:
4153 * 4 = ceil(buffer len/mss). To make sure we don't
4154 * overrun the FIFO, adjust the max buffer len if mss
4159 max_per_txd
= min(mss
<< 2, max_per_txd
);
4160 max_txd_pwr
= fls(max_per_txd
) - 1;
4163 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4164 * points to just header, pull a few bytes of payload from
4165 * frags into skb->data
4167 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4169 * we do this workaround for ES2LAN, but it is un-necessary,
4170 * avoiding it could save a lot of cycles
4172 if (skb
->data_len
&& (hdr_len
== len
)) {
4173 unsigned int pull_size
;
4175 pull_size
= min((unsigned int)4, skb
->data_len
);
4176 if (!__pskb_pull_tail(skb
, pull_size
)) {
4177 e_err("__pskb_pull_tail failed.\n");
4178 dev_kfree_skb_any(skb
);
4179 return NETDEV_TX_OK
;
4181 len
= skb
->len
- skb
->data_len
;
4185 /* reserve a descriptor for the offload context */
4186 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4190 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4192 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4193 for (f
= 0; f
< nr_frags
; f
++)
4194 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4197 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4198 e1000_transfer_dhcp_info(adapter
, skb
);
4201 * need: count + 2 desc gap to keep tail from touching
4202 * head, otherwise try next time
4204 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4205 return NETDEV_TX_BUSY
;
4207 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4208 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4209 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4212 first
= tx_ring
->next_to_use
;
4214 tso
= e1000_tso(adapter
, skb
);
4216 dev_kfree_skb_any(skb
);
4217 return NETDEV_TX_OK
;
4221 tx_flags
|= E1000_TX_FLAGS_TSO
;
4222 else if (e1000_tx_csum(adapter
, skb
))
4223 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4226 * Old method was to assume IPv4 packet by default if TSO was enabled.
4227 * 82571 hardware supports TSO capabilities for IPv6 as well...
4228 * no longer assume, we must.
4230 if (skb
->protocol
== htons(ETH_P_IP
))
4231 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4233 /* if count is 0 then mapping error has occured */
4234 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4236 e1000_tx_queue(adapter
, tx_flags
, count
);
4237 /* Make sure there is space in the ring for the next send. */
4238 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4241 dev_kfree_skb_any(skb
);
4242 tx_ring
->buffer_info
[first
].time_stamp
= 0;
4243 tx_ring
->next_to_use
= first
;
4246 return NETDEV_TX_OK
;
4250 * e1000_tx_timeout - Respond to a Tx Hang
4251 * @netdev: network interface device structure
4253 static void e1000_tx_timeout(struct net_device
*netdev
)
4255 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4257 /* Do the reset outside of interrupt context */
4258 adapter
->tx_timeout_count
++;
4259 schedule_work(&adapter
->reset_task
);
4262 static void e1000_reset_task(struct work_struct
*work
)
4264 struct e1000_adapter
*adapter
;
4265 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4267 e1000e_reinit_locked(adapter
);
4271 * e1000_get_stats - Get System Network Statistics
4272 * @netdev: network interface device structure
4274 * Returns the address of the device statistics structure.
4275 * The statistics are actually updated from the timer callback.
4277 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4279 /* only return the current stats */
4280 return &netdev
->stats
;
4284 * e1000_change_mtu - Change the Maximum Transfer Unit
4285 * @netdev: network interface device structure
4286 * @new_mtu: new value for maximum frame size
4288 * Returns 0 on success, negative on failure
4290 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4292 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4293 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4295 /* Jumbo frame support */
4296 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
4297 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4298 e_err("Jumbo Frames not supported.\n");
4302 /* Supported frame sizes */
4303 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4304 (max_frame
> adapter
->max_hw_frame_size
)) {
4305 e_err("Unsupported MTU setting\n");
4309 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4311 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
4312 adapter
->max_frame_size
= max_frame
;
4313 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4314 netdev
->mtu
= new_mtu
;
4315 if (netif_running(netdev
))
4316 e1000e_down(adapter
);
4319 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4320 * means we reserve 2 more, this pushes us to allocate from the next
4322 * i.e. RXBUFFER_2048 --> size-4096 slab
4323 * However with the new *_jumbo_rx* routines, jumbo receives will use
4327 if (max_frame
<= 2048)
4328 adapter
->rx_buffer_len
= 2048;
4330 adapter
->rx_buffer_len
= 4096;
4332 /* adjust allocation if LPE protects us, and we aren't using SBP */
4333 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4334 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4335 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4338 if (netif_running(netdev
))
4341 e1000e_reset(adapter
);
4343 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4348 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4351 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4352 struct mii_ioctl_data
*data
= if_mii(ifr
);
4354 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4359 data
->phy_id
= adapter
->hw
.phy
.addr
;
4362 e1000_phy_read_status(adapter
);
4364 switch (data
->reg_num
& 0x1F) {
4366 data
->val_out
= adapter
->phy_regs
.bmcr
;
4369 data
->val_out
= adapter
->phy_regs
.bmsr
;
4372 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4375 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4378 data
->val_out
= adapter
->phy_regs
.advertise
;
4381 data
->val_out
= adapter
->phy_regs
.lpa
;
4384 data
->val_out
= adapter
->phy_regs
.expansion
;
4387 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4390 data
->val_out
= adapter
->phy_regs
.stat1000
;
4393 data
->val_out
= adapter
->phy_regs
.estatus
;
4406 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4412 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4418 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
4420 struct e1000_hw
*hw
= &adapter
->hw
;
4425 /* copy MAC RARs to PHY RARs */
4426 for (i
= 0; i
< adapter
->hw
.mac
.rar_entry_count
; i
++) {
4427 mac_reg
= er32(RAL(i
));
4428 e1e_wphy(hw
, BM_RAR_L(i
), (u16
)(mac_reg
& 0xFFFF));
4429 e1e_wphy(hw
, BM_RAR_M(i
), (u16
)((mac_reg
>> 16) & 0xFFFF));
4430 mac_reg
= er32(RAH(i
));
4431 e1e_wphy(hw
, BM_RAR_H(i
), (u16
)(mac_reg
& 0xFFFF));
4432 e1e_wphy(hw
, BM_RAR_CTRL(i
), (u16
)((mac_reg
>> 16) & 0xFFFF));
4435 /* copy MAC MTA to PHY MTA */
4436 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
4437 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
4438 e1e_wphy(hw
, BM_MTA(i
), (u16
)(mac_reg
& 0xFFFF));
4439 e1e_wphy(hw
, BM_MTA(i
) + 1, (u16
)((mac_reg
>> 16) & 0xFFFF));
4442 /* configure PHY Rx Control register */
4443 e1e_rphy(&adapter
->hw
, BM_RCTL
, &phy_reg
);
4444 mac_reg
= er32(RCTL
);
4445 if (mac_reg
& E1000_RCTL_UPE
)
4446 phy_reg
|= BM_RCTL_UPE
;
4447 if (mac_reg
& E1000_RCTL_MPE
)
4448 phy_reg
|= BM_RCTL_MPE
;
4449 phy_reg
&= ~(BM_RCTL_MO_MASK
);
4450 if (mac_reg
& E1000_RCTL_MO_3
)
4451 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
4452 << BM_RCTL_MO_SHIFT
);
4453 if (mac_reg
& E1000_RCTL_BAM
)
4454 phy_reg
|= BM_RCTL_BAM
;
4455 if (mac_reg
& E1000_RCTL_PMCF
)
4456 phy_reg
|= BM_RCTL_PMCF
;
4457 mac_reg
= er32(CTRL
);
4458 if (mac_reg
& E1000_CTRL_RFCE
)
4459 phy_reg
|= BM_RCTL_RFCE
;
4460 e1e_wphy(&adapter
->hw
, BM_RCTL
, phy_reg
);
4462 /* enable PHY wakeup in MAC register */
4464 ew32(WUC
, E1000_WUC_PHY_WAKE
| E1000_WUC_PME_EN
);
4466 /* configure and enable PHY wakeup in PHY registers */
4467 e1e_wphy(&adapter
->hw
, BM_WUFC
, wufc
);
4468 e1e_wphy(&adapter
->hw
, BM_WUC
, E1000_WUC_PME_EN
);
4470 /* activate PHY wakeup */
4471 retval
= hw
->phy
.ops
.acquire(hw
);
4473 e_err("Could not acquire PHY\n");
4476 e1000e_write_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4477 (BM_WUC_ENABLE_PAGE
<< IGP_PAGE_SHIFT
));
4478 retval
= e1000e_read_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, &phy_reg
);
4480 e_err("Could not read PHY page 769\n");
4483 phy_reg
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
4484 retval
= e1000e_write_phy_reg_mdic(hw
, BM_WUC_ENABLE_REG
, phy_reg
);
4486 e_err("Could not set PHY Host Wakeup bit\n");
4488 hw
->phy
.ops
.release(hw
);
4493 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
4495 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4496 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4497 struct e1000_hw
*hw
= &adapter
->hw
;
4498 u32 ctrl
, ctrl_ext
, rctl
, status
;
4499 u32 wufc
= adapter
->wol
;
4502 netif_device_detach(netdev
);
4504 if (netif_running(netdev
)) {
4505 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4506 e1000e_down(adapter
);
4507 e1000_free_irq(adapter
);
4509 e1000e_reset_interrupt_capability(adapter
);
4511 retval
= pci_save_state(pdev
);
4515 status
= er32(STATUS
);
4516 if (status
& E1000_STATUS_LU
)
4517 wufc
&= ~E1000_WUFC_LNKC
;
4520 e1000_setup_rctl(adapter
);
4521 e1000_set_multi(netdev
);
4523 /* turn on all-multi mode if wake on multicast is enabled */
4524 if (wufc
& E1000_WUFC_MC
) {
4526 rctl
|= E1000_RCTL_MPE
;
4531 /* advertise wake from D3Cold */
4532 #define E1000_CTRL_ADVD3WUC 0x00100000
4533 /* phy power management enable */
4534 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4535 ctrl
|= E1000_CTRL_ADVD3WUC
;
4536 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
4537 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
4540 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
4541 adapter
->hw
.phy
.media_type
==
4542 e1000_media_type_internal_serdes
) {
4543 /* keep the laser running in D3 */
4544 ctrl_ext
= er32(CTRL_EXT
);
4545 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
4546 ew32(CTRL_EXT
, ctrl_ext
);
4549 if (adapter
->flags
& FLAG_IS_ICH
)
4550 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
4552 /* Allow time for pending master requests to run */
4553 e1000e_disable_pcie_master(&adapter
->hw
);
4555 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
4556 /* enable wakeup by the PHY */
4557 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
4561 /* enable wakeup by the MAC */
4563 ew32(WUC
, E1000_WUC_PME_EN
);
4570 *enable_wake
= !!wufc
;
4572 /* make sure adapter isn't asleep if manageability is enabled */
4573 if ((adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
4574 (hw
->mac
.ops
.check_mng_mode(hw
)))
4575 *enable_wake
= true;
4577 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
4578 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
4581 * Release control of h/w to f/w. If f/w is AMT enabled, this
4582 * would have already happened in close and is redundant.
4584 e1000_release_hw_control(adapter
);
4586 pci_disable_device(pdev
);
4591 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
4593 if (sleep
&& wake
) {
4594 pci_prepare_to_sleep(pdev
);
4598 pci_wake_from_d3(pdev
, wake
);
4599 pci_set_power_state(pdev
, PCI_D3hot
);
4602 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
4605 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4606 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4609 * The pci-e switch on some quad port adapters will report a
4610 * correctable error when the MAC transitions from D0 to D3. To
4611 * prevent this we need to mask off the correctable errors on the
4612 * downstream port of the pci-e switch.
4614 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
4615 struct pci_dev
*us_dev
= pdev
->bus
->self
;
4616 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
4619 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
4620 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
4621 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
4623 e1000_power_off(pdev
, sleep
, wake
);
4625 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
4627 e1000_power_off(pdev
, sleep
, wake
);
4631 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
4637 * 82573 workaround - disable L1 ASPM on mobile chipsets
4639 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4640 * resulting in lost data or garbage information on the pci-e link
4641 * level. This could result in (false) bad EEPROM checksum errors,
4642 * long ping times (up to 2s) or even a system freeze/hang.
4644 * Unfortunately this feature saves about 1W power consumption when
4647 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
4648 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
4650 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
4652 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
4657 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4662 retval
= __e1000_shutdown(pdev
, &wake
);
4664 e1000_complete_shutdown(pdev
, true, wake
);
4669 static int e1000_resume(struct pci_dev
*pdev
)
4671 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4672 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4673 struct e1000_hw
*hw
= &adapter
->hw
;
4676 pci_set_power_state(pdev
, PCI_D0
);
4677 pci_restore_state(pdev
);
4678 pci_save_state(pdev
);
4679 e1000e_disable_l1aspm(pdev
);
4681 err
= pci_enable_device_mem(pdev
);
4684 "Cannot enable PCI device from suspend\n");
4688 pci_set_master(pdev
);
4690 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4691 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4693 e1000e_set_interrupt_capability(adapter
);
4694 if (netif_running(netdev
)) {
4695 err
= e1000_request_irq(adapter
);
4700 e1000e_power_up_phy(adapter
);
4702 /* report the system wakeup cause from S3/S4 */
4703 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
4706 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
4708 e_info("PHY Wakeup cause - %s\n",
4709 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
4710 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
4711 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
4712 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
4713 phy_data
& E1000_WUS_LNKC
? "Link Status "
4714 " Change" : "other");
4716 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
4718 u32 wus
= er32(WUS
);
4720 e_info("MAC Wakeup cause - %s\n",
4721 wus
& E1000_WUS_EX
? "Unicast Packet" :
4722 wus
& E1000_WUS_MC
? "Multicast Packet" :
4723 wus
& E1000_WUS_BC
? "Broadcast Packet" :
4724 wus
& E1000_WUS_MAG
? "Magic Packet" :
4725 wus
& E1000_WUS_LNKC
? "Link Status Change" :
4731 e1000e_reset(adapter
);
4733 e1000_init_manageability(adapter
);
4735 if (netif_running(netdev
))
4738 netif_device_attach(netdev
);
4741 * If the controller has AMT, do not set DRV_LOAD until the interface
4742 * is up. For all other cases, let the f/w know that the h/w is now
4743 * under the control of the driver.
4745 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4746 e1000_get_hw_control(adapter
);
4752 static void e1000_shutdown(struct pci_dev
*pdev
)
4756 __e1000_shutdown(pdev
, &wake
);
4758 if (system_state
== SYSTEM_POWER_OFF
)
4759 e1000_complete_shutdown(pdev
, false, wake
);
4762 #ifdef CONFIG_NET_POLL_CONTROLLER
4764 * Polling 'interrupt' - used by things like netconsole to send skbs
4765 * without having to re-enable interrupts. It's not called while
4766 * the interrupt routine is executing.
4768 static void e1000_netpoll(struct net_device
*netdev
)
4770 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4772 disable_irq(adapter
->pdev
->irq
);
4773 e1000_intr(adapter
->pdev
->irq
, netdev
);
4775 enable_irq(adapter
->pdev
->irq
);
4780 * e1000_io_error_detected - called when PCI error is detected
4781 * @pdev: Pointer to PCI device
4782 * @state: The current pci connection state
4784 * This function is called after a PCI bus error affecting
4785 * this device has been detected.
4787 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4788 pci_channel_state_t state
)
4790 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4791 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4793 netif_device_detach(netdev
);
4795 if (state
== pci_channel_io_perm_failure
)
4796 return PCI_ERS_RESULT_DISCONNECT
;
4798 if (netif_running(netdev
))
4799 e1000e_down(adapter
);
4800 pci_disable_device(pdev
);
4802 /* Request a slot slot reset. */
4803 return PCI_ERS_RESULT_NEED_RESET
;
4807 * e1000_io_slot_reset - called after the pci bus has been reset.
4808 * @pdev: Pointer to PCI device
4810 * Restart the card from scratch, as if from a cold-boot. Implementation
4811 * resembles the first-half of the e1000_resume routine.
4813 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4815 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4816 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4817 struct e1000_hw
*hw
= &adapter
->hw
;
4819 pci_ers_result_t result
;
4821 e1000e_disable_l1aspm(pdev
);
4822 err
= pci_enable_device_mem(pdev
);
4825 "Cannot re-enable PCI device after reset.\n");
4826 result
= PCI_ERS_RESULT_DISCONNECT
;
4828 pci_set_master(pdev
);
4829 pci_restore_state(pdev
);
4830 pci_save_state(pdev
);
4832 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4833 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4835 e1000e_reset(adapter
);
4837 result
= PCI_ERS_RESULT_RECOVERED
;
4840 pci_cleanup_aer_uncorrect_error_status(pdev
);
4846 * e1000_io_resume - called when traffic can start flowing again.
4847 * @pdev: Pointer to PCI device
4849 * This callback is called when the error recovery driver tells us that
4850 * its OK to resume normal operation. Implementation resembles the
4851 * second-half of the e1000_resume routine.
4853 static void e1000_io_resume(struct pci_dev
*pdev
)
4855 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4856 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4858 e1000_init_manageability(adapter
);
4860 if (netif_running(netdev
)) {
4861 if (e1000e_up(adapter
)) {
4863 "can't bring device back up after reset\n");
4868 netif_device_attach(netdev
);
4871 * If the controller has AMT, do not set DRV_LOAD until the interface
4872 * is up. For all other cases, let the f/w know that the h/w is now
4873 * under the control of the driver.
4875 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4876 e1000_get_hw_control(adapter
);
4880 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4882 struct e1000_hw
*hw
= &adapter
->hw
;
4883 struct net_device
*netdev
= adapter
->netdev
;
4886 /* print bus type/speed/width info */
4887 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4889 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4893 e_info("Intel(R) PRO/%s Network Connection\n",
4894 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4895 e1000e_read_pba_num(hw
, &pba_num
);
4896 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4897 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4900 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4902 struct e1000_hw
*hw
= &adapter
->hw
;
4906 if (hw
->mac
.type
!= e1000_82573
)
4909 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4910 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
4911 /* Deep Smart Power Down (DSPD) */
4912 dev_warn(&adapter
->pdev
->dev
,
4913 "Warning: detected DSPD enabled in EEPROM\n");
4916 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4917 if (!ret_val
&& (le16_to_cpu(buf
) & (3 << 2))) {
4919 dev_warn(&adapter
->pdev
->dev
,
4920 "Warning: detected ASPM enabled in EEPROM\n");
4924 static const struct net_device_ops e1000e_netdev_ops
= {
4925 .ndo_open
= e1000_open
,
4926 .ndo_stop
= e1000_close
,
4927 .ndo_start_xmit
= e1000_xmit_frame
,
4928 .ndo_get_stats
= e1000_get_stats
,
4929 .ndo_set_multicast_list
= e1000_set_multi
,
4930 .ndo_set_mac_address
= e1000_set_mac
,
4931 .ndo_change_mtu
= e1000_change_mtu
,
4932 .ndo_do_ioctl
= e1000_ioctl
,
4933 .ndo_tx_timeout
= e1000_tx_timeout
,
4934 .ndo_validate_addr
= eth_validate_addr
,
4936 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
4937 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
4938 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
4939 #ifdef CONFIG_NET_POLL_CONTROLLER
4940 .ndo_poll_controller
= e1000_netpoll
,
4945 * e1000_probe - Device Initialization Routine
4946 * @pdev: PCI device information struct
4947 * @ent: entry in e1000_pci_tbl
4949 * Returns 0 on success, negative on failure
4951 * e1000_probe initializes an adapter identified by a pci_dev structure.
4952 * The OS initialization, configuring of the adapter private structure,
4953 * and a hardware reset occur.
4955 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4956 const struct pci_device_id
*ent
)
4958 struct net_device
*netdev
;
4959 struct e1000_adapter
*adapter
;
4960 struct e1000_hw
*hw
;
4961 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4962 resource_size_t mmio_start
, mmio_len
;
4963 resource_size_t flash_start
, flash_len
;
4965 static int cards_found
;
4966 int i
, err
, pci_using_dac
;
4967 u16 eeprom_data
= 0;
4968 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4970 e1000e_disable_l1aspm(pdev
);
4972 err
= pci_enable_device_mem(pdev
);
4977 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
4979 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
4983 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4985 err
= pci_set_consistent_dma_mask(pdev
,
4988 dev_err(&pdev
->dev
, "No usable DMA "
4989 "configuration, aborting\n");
4995 err
= pci_request_selected_regions_exclusive(pdev
,
4996 pci_select_bars(pdev
, IORESOURCE_MEM
),
4997 e1000e_driver_name
);
5001 /* AER (Advanced Error Reporting) hooks */
5002 pci_enable_pcie_error_reporting(pdev
);
5004 pci_set_master(pdev
);
5005 /* PCI config space info */
5006 err
= pci_save_state(pdev
);
5008 goto err_alloc_etherdev
;
5011 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
5013 goto err_alloc_etherdev
;
5015 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
5017 pci_set_drvdata(pdev
, netdev
);
5018 adapter
= netdev_priv(netdev
);
5020 adapter
->netdev
= netdev
;
5021 adapter
->pdev
= pdev
;
5023 adapter
->pba
= ei
->pba
;
5024 adapter
->flags
= ei
->flags
;
5025 adapter
->flags2
= ei
->flags2
;
5026 adapter
->hw
.adapter
= adapter
;
5027 adapter
->hw
.mac
.type
= ei
->mac
;
5028 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
5029 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
5031 mmio_start
= pci_resource_start(pdev
, 0);
5032 mmio_len
= pci_resource_len(pdev
, 0);
5035 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
5036 if (!adapter
->hw
.hw_addr
)
5039 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
5040 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
5041 flash_start
= pci_resource_start(pdev
, 1);
5042 flash_len
= pci_resource_len(pdev
, 1);
5043 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
5044 if (!adapter
->hw
.flash_address
)
5048 /* construct the net_device struct */
5049 netdev
->netdev_ops
= &e1000e_netdev_ops
;
5050 e1000e_set_ethtool_ops(netdev
);
5051 netdev
->watchdog_timeo
= 5 * HZ
;
5052 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
5053 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
5055 netdev
->mem_start
= mmio_start
;
5056 netdev
->mem_end
= mmio_start
+ mmio_len
;
5058 adapter
->bd_number
= cards_found
++;
5060 e1000e_check_options(adapter
);
5062 /* setup adapter struct */
5063 err
= e1000_sw_init(adapter
);
5069 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
5070 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
5071 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
5073 err
= ei
->get_variants(adapter
);
5077 if ((adapter
->flags
& FLAG_IS_ICH
) &&
5078 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
5079 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
5081 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
5083 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
5085 /* Copper options */
5086 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
5087 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
5088 adapter
->hw
.phy
.disable_polarity_correction
= 0;
5089 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
5092 if (e1000_check_reset_block(&adapter
->hw
))
5093 e_info("PHY reset is blocked due to SOL/IDER session.\n");
5095 netdev
->features
= NETIF_F_SG
|
5097 NETIF_F_HW_VLAN_TX
|
5100 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
5101 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
5103 netdev
->features
|= NETIF_F_TSO
;
5104 netdev
->features
|= NETIF_F_TSO6
;
5106 netdev
->vlan_features
|= NETIF_F_TSO
;
5107 netdev
->vlan_features
|= NETIF_F_TSO6
;
5108 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
5109 netdev
->vlan_features
|= NETIF_F_SG
;
5112 netdev
->features
|= NETIF_F_HIGHDMA
;
5114 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
5115 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
5118 * before reading the NVM, reset the controller to
5119 * put the device in a known good starting state
5121 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
5124 * systems with ASPM and others may see the checksum fail on the first
5125 * attempt. Let's give it a few tries
5128 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
5131 e_err("The NVM Checksum Is Not Valid\n");
5137 e1000_eeprom_checks(adapter
);
5139 /* copy the MAC address out of the NVM */
5140 if (e1000e_read_mac_addr(&adapter
->hw
))
5141 e_err("NVM Read Error while reading MAC address\n");
5143 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5144 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
5146 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
5147 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
5152 init_timer(&adapter
->watchdog_timer
);
5153 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
5154 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
5156 init_timer(&adapter
->phy_info_timer
);
5157 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
5158 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
5160 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
5161 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
5162 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
5163 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
5164 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
5166 /* Initialize link parameters. User can change them with ethtool */
5167 adapter
->hw
.mac
.autoneg
= 1;
5168 adapter
->fc_autoneg
= 1;
5169 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
5170 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
5171 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
5173 /* ring size defaults */
5174 adapter
->rx_ring
->count
= 256;
5175 adapter
->tx_ring
->count
= 256;
5178 * Initial Wake on LAN setting - If APM wake is enabled in
5179 * the EEPROM, enable the ACPI Magic Packet filter
5181 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
5182 /* APME bit in EEPROM is mapped to WUC.APME */
5183 eeprom_data
= er32(WUC
);
5184 eeprom_apme_mask
= E1000_WUC_APME
;
5185 if (eeprom_data
& E1000_WUC_PHY_WAKE
)
5186 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
5187 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
5188 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
5189 (adapter
->hw
.bus
.func
== 1))
5190 e1000_read_nvm(&adapter
->hw
,
5191 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
5193 e1000_read_nvm(&adapter
->hw
,
5194 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
5197 /* fetch WoL from EEPROM */
5198 if (eeprom_data
& eeprom_apme_mask
)
5199 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
5202 * now that we have the eeprom settings, apply the special cases
5203 * where the eeprom may be wrong or the board simply won't support
5204 * wake on lan on a particular port
5206 if (!(adapter
->flags
& FLAG_HAS_WOL
))
5207 adapter
->eeprom_wol
= 0;
5209 /* initialize the wol settings based on the eeprom settings */
5210 adapter
->wol
= adapter
->eeprom_wol
;
5211 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
5213 /* save off EEPROM version number */
5214 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
5216 /* reset the hardware with the new settings */
5217 e1000e_reset(adapter
);
5220 * If the controller has AMT, do not set DRV_LOAD until the interface
5221 * is up. For all other cases, let the f/w know that the h/w is now
5222 * under the control of the driver.
5224 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5225 e1000_get_hw_control(adapter
);
5227 strcpy(netdev
->name
, "eth%d");
5228 err
= register_netdev(netdev
);
5232 /* carrier off reporting is important to ethtool even BEFORE open */
5233 netif_carrier_off(netdev
);
5235 e1000_print_device_info(adapter
);
5240 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5241 e1000_release_hw_control(adapter
);
5243 if (!e1000_check_reset_block(&adapter
->hw
))
5244 e1000_phy_hw_reset(&adapter
->hw
);
5247 kfree(adapter
->tx_ring
);
5248 kfree(adapter
->rx_ring
);
5250 if (adapter
->hw
.flash_address
)
5251 iounmap(adapter
->hw
.flash_address
);
5252 e1000e_reset_interrupt_capability(adapter
);
5254 iounmap(adapter
->hw
.hw_addr
);
5256 free_netdev(netdev
);
5258 pci_release_selected_regions(pdev
,
5259 pci_select_bars(pdev
, IORESOURCE_MEM
));
5262 pci_disable_device(pdev
);
5267 * e1000_remove - Device Removal Routine
5268 * @pdev: PCI device information struct
5270 * e1000_remove is called by the PCI subsystem to alert the driver
5271 * that it should release a PCI device. The could be caused by a
5272 * Hot-Plug event, or because the driver is going to be removed from
5275 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5277 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5278 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5281 * flush_scheduled work may reschedule our watchdog task, so
5282 * explicitly disable watchdog tasks from being rescheduled
5284 set_bit(__E1000_DOWN
, &adapter
->state
);
5285 del_timer_sync(&adapter
->watchdog_timer
);
5286 del_timer_sync(&adapter
->phy_info_timer
);
5288 cancel_work_sync(&adapter
->reset_task
);
5289 cancel_work_sync(&adapter
->watchdog_task
);
5290 cancel_work_sync(&adapter
->downshift_task
);
5291 cancel_work_sync(&adapter
->update_phy_task
);
5292 cancel_work_sync(&adapter
->print_hang_task
);
5293 flush_scheduled_work();
5295 if (!(netdev
->flags
& IFF_UP
))
5296 e1000_power_down_phy(adapter
);
5298 unregister_netdev(netdev
);
5301 * Release control of h/w to f/w. If f/w is AMT enabled, this
5302 * would have already happened in close and is redundant.
5304 e1000_release_hw_control(adapter
);
5306 e1000e_reset_interrupt_capability(adapter
);
5307 kfree(adapter
->tx_ring
);
5308 kfree(adapter
->rx_ring
);
5310 iounmap(adapter
->hw
.hw_addr
);
5311 if (adapter
->hw
.flash_address
)
5312 iounmap(adapter
->hw
.flash_address
);
5313 pci_release_selected_regions(pdev
,
5314 pci_select_bars(pdev
, IORESOURCE_MEM
));
5316 free_netdev(netdev
);
5319 pci_disable_pcie_error_reporting(pdev
);
5321 pci_disable_device(pdev
);
5324 /* PCI Error Recovery (ERS) */
5325 static struct pci_error_handlers e1000_err_handler
= {
5326 .error_detected
= e1000_io_error_detected
,
5327 .slot_reset
= e1000_io_slot_reset
,
5328 .resume
= e1000_io_resume
,
5331 static struct pci_device_id e1000_pci_tbl
[] = {
5332 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5333 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5334 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5335 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5336 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5337 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5338 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5339 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5340 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5342 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5343 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5344 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5345 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5347 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5348 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5349 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5351 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5352 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
5353 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
5355 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5356 board_80003es2lan
},
5357 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5358 board_80003es2lan
},
5359 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5360 board_80003es2lan
},
5361 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5362 board_80003es2lan
},
5364 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5365 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5366 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5367 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5368 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5369 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5370 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5371 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
5373 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5374 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5375 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5376 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5377 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5378 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5379 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5380 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5381 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5383 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5384 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5385 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5387 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5388 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5390 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
5391 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
5392 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
5393 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
5395 { } /* terminate list */
5397 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
5399 /* PCI Device API Driver */
5400 static struct pci_driver e1000_driver
= {
5401 .name
= e1000e_driver_name
,
5402 .id_table
= e1000_pci_tbl
,
5403 .probe
= e1000_probe
,
5404 .remove
= __devexit_p(e1000_remove
),
5406 /* Power Management Hooks */
5407 .suspend
= e1000_suspend
,
5408 .resume
= e1000_resume
,
5410 .shutdown
= e1000_shutdown
,
5411 .err_handler
= &e1000_err_handler
5415 * e1000_init_module - Driver Registration Routine
5417 * e1000_init_module is the first routine called when the driver is
5418 * loaded. All it does is register with the PCI subsystem.
5420 static int __init
e1000_init_module(void)
5423 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
5424 e1000e_driver_name
, e1000e_driver_version
);
5425 printk(KERN_INFO
"%s: Copyright (c) 1999 - 2009 Intel Corporation.\n",
5426 e1000e_driver_name
);
5427 ret
= pci_register_driver(&e1000_driver
);
5431 module_init(e1000_init_module
);
5434 * e1000_exit_module - Driver Exit Cleanup Routine
5436 * e1000_exit_module is called just before the driver is removed
5439 static void __exit
e1000_exit_module(void)
5441 pci_unregister_driver(&e1000_driver
);
5443 module_exit(e1000_exit_module
);
5446 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5447 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5448 MODULE_LICENSE("GPL");
5449 MODULE_VERSION(DRV_VERSION
);