1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2008 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/module.h>
30 #include <linux/types.h>
31 #include <linux/init.h>
32 #include <linux/pci.h>
33 #include <linux/vmalloc.h>
34 #include <linux/pagemap.h>
35 #include <linux/delay.h>
36 #include <linux/netdevice.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #include <net/checksum.h>
40 #include <net/ip6_checksum.h>
41 #include <linux/mii.h>
42 #include <linux/ethtool.h>
43 #include <linux/if_vlan.h>
44 #include <linux/cpu.h>
45 #include <linux/smp.h>
46 #include <linux/pm_qos_params.h>
50 #define DRV_VERSION "0.3.3.3-k6"
51 char e1000e_driver_name
[] = "e1000e";
52 const char e1000e_driver_version
[] = DRV_VERSION
;
54 static const struct e1000_info
*e1000_info_tbl
[] = {
55 [board_82571
] = &e1000_82571_info
,
56 [board_82572
] = &e1000_82572_info
,
57 [board_82573
] = &e1000_82573_info
,
58 [board_82574
] = &e1000_82574_info
,
59 [board_80003es2lan
] = &e1000_es2_info
,
60 [board_ich8lan
] = &e1000_ich8_info
,
61 [board_ich9lan
] = &e1000_ich9_info
,
62 [board_ich10lan
] = &e1000_ich10_info
,
67 * e1000_get_hw_dev_name - return device name string
68 * used by hardware layer to print debugging information
70 char *e1000e_get_hw_dev_name(struct e1000_hw
*hw
)
72 return hw
->adapter
->netdev
->name
;
77 * e1000_desc_unused - calculate if we have unused descriptors
79 static int e1000_desc_unused(struct e1000_ring
*ring
)
81 if (ring
->next_to_clean
> ring
->next_to_use
)
82 return ring
->next_to_clean
- ring
->next_to_use
- 1;
84 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
88 * e1000_receive_skb - helper function to handle Rx indications
89 * @adapter: board private structure
90 * @status: descriptor status field as written by hardware
91 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
92 * @skb: pointer to sk_buff to be indicated to stack
94 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
95 struct net_device
*netdev
,
97 u8 status
, __le16 vlan
)
99 skb
->protocol
= eth_type_trans(skb
, netdev
);
101 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
102 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
105 netif_receive_skb(skb
);
109 * e1000_rx_checksum - Receive Checksum Offload for 82543
110 * @adapter: board private structure
111 * @status_err: receive descriptor status and error fields
112 * @csum: receive descriptor csum field
113 * @sk_buff: socket buffer with received data
115 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
116 u32 csum
, struct sk_buff
*skb
)
118 u16 status
= (u16
)status_err
;
119 u8 errors
= (u8
)(status_err
>> 24);
120 skb
->ip_summed
= CHECKSUM_NONE
;
122 /* Ignore Checksum bit is set */
123 if (status
& E1000_RXD_STAT_IXSM
)
125 /* TCP/UDP checksum error bit is set */
126 if (errors
& E1000_RXD_ERR_TCPE
) {
127 /* let the stack verify checksum errors */
128 adapter
->hw_csum_err
++;
132 /* TCP/UDP Checksum has not been calculated */
133 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
136 /* It must be a TCP or UDP packet with a valid checksum */
137 if (status
& E1000_RXD_STAT_TCPCS
) {
138 /* TCP checksum is good */
139 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
142 * IP fragment with UDP payload
143 * Hardware complements the payload checksum, so we undo it
144 * and then put the value in host order for further stack use.
146 __sum16 sum
= (__force __sum16
)htons(csum
);
147 skb
->csum
= csum_unfold(~sum
);
148 skb
->ip_summed
= CHECKSUM_COMPLETE
;
150 adapter
->hw_csum_good
++;
154 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
155 * @adapter: address of board private structure
157 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
160 struct net_device
*netdev
= adapter
->netdev
;
161 struct pci_dev
*pdev
= adapter
->pdev
;
162 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
163 struct e1000_rx_desc
*rx_desc
;
164 struct e1000_buffer
*buffer_info
;
167 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
169 i
= rx_ring
->next_to_use
;
170 buffer_info
= &rx_ring
->buffer_info
[i
];
172 while (cleaned_count
--) {
173 skb
= buffer_info
->skb
;
179 skb
= netdev_alloc_skb(netdev
, bufsz
);
181 /* Better luck next round */
182 adapter
->alloc_rx_buff_failed
++;
187 * Make buffer alignment 2 beyond a 16 byte boundary
188 * this will result in a 16 byte aligned IP header after
189 * the 14 byte MAC header is removed
191 skb_reserve(skb
, NET_IP_ALIGN
);
193 buffer_info
->skb
= skb
;
195 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
196 adapter
->rx_buffer_len
,
198 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
199 dev_err(&pdev
->dev
, "RX DMA map failed\n");
200 adapter
->rx_dma_failed
++;
204 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
205 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
208 if (i
== rx_ring
->count
)
210 buffer_info
= &rx_ring
->buffer_info
[i
];
213 if (rx_ring
->next_to_use
!= i
) {
214 rx_ring
->next_to_use
= i
;
216 i
= (rx_ring
->count
- 1);
219 * Force memory writes to complete before letting h/w
220 * know there are new descriptors to fetch. (Only
221 * applicable for weak-ordered memory model archs,
225 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
230 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
231 * @adapter: address of board private structure
233 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
236 struct net_device
*netdev
= adapter
->netdev
;
237 struct pci_dev
*pdev
= adapter
->pdev
;
238 union e1000_rx_desc_packet_split
*rx_desc
;
239 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
240 struct e1000_buffer
*buffer_info
;
241 struct e1000_ps_page
*ps_page
;
245 i
= rx_ring
->next_to_use
;
246 buffer_info
= &rx_ring
->buffer_info
[i
];
248 while (cleaned_count
--) {
249 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
251 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
252 ps_page
= &buffer_info
->ps_pages
[j
];
253 if (j
>= adapter
->rx_ps_pages
) {
254 /* all unused desc entries get hw null ptr */
255 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
258 if (!ps_page
->page
) {
259 ps_page
->page
= alloc_page(GFP_ATOMIC
);
260 if (!ps_page
->page
) {
261 adapter
->alloc_rx_buff_failed
++;
264 ps_page
->dma
= pci_map_page(pdev
,
268 if (pci_dma_mapping_error(pdev
, ps_page
->dma
)) {
269 dev_err(&adapter
->pdev
->dev
,
270 "RX DMA page map failed\n");
271 adapter
->rx_dma_failed
++;
276 * Refresh the desc even if buffer_addrs
277 * didn't change because each write-back
280 rx_desc
->read
.buffer_addr
[j
+1] =
281 cpu_to_le64(ps_page
->dma
);
284 skb
= netdev_alloc_skb(netdev
,
285 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
288 adapter
->alloc_rx_buff_failed
++;
293 * Make buffer alignment 2 beyond a 16 byte boundary
294 * this will result in a 16 byte aligned IP header after
295 * the 14 byte MAC header is removed
297 skb_reserve(skb
, NET_IP_ALIGN
);
299 buffer_info
->skb
= skb
;
300 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
301 adapter
->rx_ps_bsize0
,
303 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
304 dev_err(&pdev
->dev
, "RX DMA map failed\n");
305 adapter
->rx_dma_failed
++;
307 dev_kfree_skb_any(skb
);
308 buffer_info
->skb
= NULL
;
312 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
315 if (i
== rx_ring
->count
)
317 buffer_info
= &rx_ring
->buffer_info
[i
];
321 if (rx_ring
->next_to_use
!= i
) {
322 rx_ring
->next_to_use
= i
;
325 i
= (rx_ring
->count
- 1);
328 * Force memory writes to complete before letting h/w
329 * know there are new descriptors to fetch. (Only
330 * applicable for weak-ordered memory model archs,
335 * Hardware increments by 16 bytes, but packet split
336 * descriptors are 32 bytes...so we increment tail
339 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
344 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
345 * @adapter: address of board private structure
346 * @rx_ring: pointer to receive ring structure
347 * @cleaned_count: number of buffers to allocate this pass
350 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
353 struct net_device
*netdev
= adapter
->netdev
;
354 struct pci_dev
*pdev
= adapter
->pdev
;
355 struct e1000_rx_desc
*rx_desc
;
356 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
357 struct e1000_buffer
*buffer_info
;
360 unsigned int bufsz
= 256 -
361 16 /* for skb_reserve */ -
364 i
= rx_ring
->next_to_use
;
365 buffer_info
= &rx_ring
->buffer_info
[i
];
367 while (cleaned_count
--) {
368 skb
= buffer_info
->skb
;
374 skb
= netdev_alloc_skb(netdev
, bufsz
);
375 if (unlikely(!skb
)) {
376 /* Better luck next round */
377 adapter
->alloc_rx_buff_failed
++;
381 /* Make buffer alignment 2 beyond a 16 byte boundary
382 * this will result in a 16 byte aligned IP header after
383 * the 14 byte MAC header is removed
385 skb_reserve(skb
, NET_IP_ALIGN
);
387 buffer_info
->skb
= skb
;
389 /* allocate a new page if necessary */
390 if (!buffer_info
->page
) {
391 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
392 if (unlikely(!buffer_info
->page
)) {
393 adapter
->alloc_rx_buff_failed
++;
398 if (!buffer_info
->dma
)
399 buffer_info
->dma
= pci_map_page(pdev
,
400 buffer_info
->page
, 0,
404 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
405 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
407 if (unlikely(++i
== rx_ring
->count
))
409 buffer_info
= &rx_ring
->buffer_info
[i
];
412 if (likely(rx_ring
->next_to_use
!= i
)) {
413 rx_ring
->next_to_use
= i
;
414 if (unlikely(i
-- == 0))
415 i
= (rx_ring
->count
- 1);
417 /* Force memory writes to complete before letting h/w
418 * know there are new descriptors to fetch. (Only
419 * applicable for weak-ordered memory model archs,
422 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
427 * e1000_clean_rx_irq - Send received data up the network stack; legacy
428 * @adapter: board private structure
430 * the return value indicates whether actual cleaning was done, there
431 * is no guarantee that everything was cleaned
433 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
434 int *work_done
, int work_to_do
)
436 struct net_device
*netdev
= adapter
->netdev
;
437 struct pci_dev
*pdev
= adapter
->pdev
;
438 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
439 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
440 struct e1000_buffer
*buffer_info
, *next_buffer
;
443 int cleaned_count
= 0;
445 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
447 i
= rx_ring
->next_to_clean
;
448 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
449 buffer_info
= &rx_ring
->buffer_info
[i
];
451 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
455 if (*work_done
>= work_to_do
)
459 status
= rx_desc
->status
;
460 skb
= buffer_info
->skb
;
461 buffer_info
->skb
= NULL
;
463 prefetch(skb
->data
- NET_IP_ALIGN
);
466 if (i
== rx_ring
->count
)
468 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
471 next_buffer
= &rx_ring
->buffer_info
[i
];
475 pci_unmap_single(pdev
,
477 adapter
->rx_buffer_len
,
479 buffer_info
->dma
= 0;
481 length
= le16_to_cpu(rx_desc
->length
);
483 /* !EOP means multiple descriptors were used to store a single
484 * packet, also make sure the frame isn't just CRC only */
485 if (!(status
& E1000_RXD_STAT_EOP
) || (length
<= 4)) {
486 /* All receives must fit into a single buffer */
487 e_dbg("%s: Receive packet consumed multiple buffers\n",
490 buffer_info
->skb
= skb
;
494 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
496 buffer_info
->skb
= skb
;
500 total_rx_bytes
+= length
;
504 * code added for copybreak, this should improve
505 * performance for small packets with large amounts
506 * of reassembly being done in the stack
508 if (length
< copybreak
) {
509 struct sk_buff
*new_skb
=
510 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
512 skb_reserve(new_skb
, NET_IP_ALIGN
);
513 skb_copy_to_linear_data_offset(new_skb
,
519 /* save the skb in buffer_info as good */
520 buffer_info
->skb
= skb
;
523 /* else just continue with the old one */
525 /* end copybreak code */
526 skb_put(skb
, length
);
528 /* Receive Checksum Offload */
529 e1000_rx_checksum(adapter
,
531 ((u32
)(rx_desc
->errors
) << 24),
532 le16_to_cpu(rx_desc
->csum
), skb
);
534 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
539 /* return some buffers to hardware, one at a time is too slow */
540 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
541 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
545 /* use prefetched values */
547 buffer_info
= next_buffer
;
549 rx_ring
->next_to_clean
= i
;
551 cleaned_count
= e1000_desc_unused(rx_ring
);
553 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
555 adapter
->total_rx_bytes
+= total_rx_bytes
;
556 adapter
->total_rx_packets
+= total_rx_packets
;
557 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
558 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
562 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
563 struct e1000_buffer
*buffer_info
)
565 if (buffer_info
->dma
) {
566 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
567 buffer_info
->length
, PCI_DMA_TODEVICE
);
568 buffer_info
->dma
= 0;
570 if (buffer_info
->skb
) {
571 dev_kfree_skb_any(buffer_info
->skb
);
572 buffer_info
->skb
= NULL
;
576 static void e1000_print_tx_hang(struct e1000_adapter
*adapter
)
578 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
579 unsigned int i
= tx_ring
->next_to_clean
;
580 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
581 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
583 /* detected Tx unit hang */
584 e_err("Detected Tx 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",
594 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
595 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
596 tx_ring
->next_to_use
,
597 tx_ring
->next_to_clean
,
598 tx_ring
->buffer_info
[eop
].time_stamp
,
601 eop_desc
->upper
.fields
.status
);
605 * e1000_clean_tx_irq - Reclaim resources after transmit completes
606 * @adapter: board private structure
608 * the return value indicates whether actual cleaning was done, there
609 * is no guarantee that everything was cleaned
611 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
613 struct net_device
*netdev
= adapter
->netdev
;
614 struct e1000_hw
*hw
= &adapter
->hw
;
615 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
616 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
617 struct e1000_buffer
*buffer_info
;
619 unsigned int count
= 0;
621 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
623 i
= tx_ring
->next_to_clean
;
624 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
625 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
627 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
628 for (cleaned
= 0; !cleaned
; ) {
629 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
630 buffer_info
= &tx_ring
->buffer_info
[i
];
631 cleaned
= (i
== eop
);
634 struct sk_buff
*skb
= buffer_info
->skb
;
635 unsigned int segs
, bytecount
;
636 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
637 /* multiply data chunks by size of headers */
638 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
640 total_tx_packets
+= segs
;
641 total_tx_bytes
+= bytecount
;
644 e1000_put_txbuf(adapter
, buffer_info
);
645 tx_desc
->upper
.data
= 0;
648 if (i
== tx_ring
->count
)
652 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
653 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
654 #define E1000_TX_WEIGHT 64
655 /* weight of a sort for tx, to avoid endless transmit cleanup */
656 if (count
++ == E1000_TX_WEIGHT
)
660 tx_ring
->next_to_clean
= i
;
662 #define TX_WAKE_THRESHOLD 32
663 if (cleaned
&& netif_carrier_ok(netdev
) &&
664 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
665 /* Make sure that anybody stopping the queue after this
666 * sees the new next_to_clean.
670 if (netif_queue_stopped(netdev
) &&
671 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
672 netif_wake_queue(netdev
);
673 ++adapter
->restart_queue
;
677 if (adapter
->detect_tx_hung
) {
679 * Detect a transmit hang in hardware, this serializes the
680 * check with the clearing of time_stamp and movement of i
682 adapter
->detect_tx_hung
= 0;
683 if (tx_ring
->buffer_info
[eop
].dma
&&
684 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
685 + (adapter
->tx_timeout_factor
* HZ
))
686 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
687 e1000_print_tx_hang(adapter
);
688 netif_stop_queue(netdev
);
691 adapter
->total_tx_bytes
+= total_tx_bytes
;
692 adapter
->total_tx_packets
+= total_tx_packets
;
693 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
694 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
699 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
700 * @adapter: board private structure
702 * the return value indicates whether actual cleaning was done, there
703 * is no guarantee that everything was cleaned
705 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
706 int *work_done
, int work_to_do
)
708 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
709 struct net_device
*netdev
= adapter
->netdev
;
710 struct pci_dev
*pdev
= adapter
->pdev
;
711 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
712 struct e1000_buffer
*buffer_info
, *next_buffer
;
713 struct e1000_ps_page
*ps_page
;
717 int cleaned_count
= 0;
719 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
721 i
= rx_ring
->next_to_clean
;
722 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
723 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
724 buffer_info
= &rx_ring
->buffer_info
[i
];
726 while (staterr
& E1000_RXD_STAT_DD
) {
727 if (*work_done
>= work_to_do
)
730 skb
= buffer_info
->skb
;
732 /* in the packet split case this is header only */
733 prefetch(skb
->data
- NET_IP_ALIGN
);
736 if (i
== rx_ring
->count
)
738 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
741 next_buffer
= &rx_ring
->buffer_info
[i
];
745 pci_unmap_single(pdev
, buffer_info
->dma
,
746 adapter
->rx_ps_bsize0
,
748 buffer_info
->dma
= 0;
750 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
751 e_dbg("%s: Packet Split buffers didn't pick up the "
752 "full packet\n", netdev
->name
);
753 dev_kfree_skb_irq(skb
);
757 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
758 dev_kfree_skb_irq(skb
);
762 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
765 e_dbg("%s: Last part of the packet spanning multiple "
766 "descriptors\n", netdev
->name
);
767 dev_kfree_skb_irq(skb
);
772 skb_put(skb
, length
);
776 * this looks ugly, but it seems compiler issues make it
777 * more efficient than reusing j
779 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
782 * page alloc/put takes too long and effects small packet
783 * throughput, so unsplit small packets and save the alloc/put
784 * only valid in softirq (napi) context to call kmap_*
786 if (l1
&& (l1
<= copybreak
) &&
787 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
790 ps_page
= &buffer_info
->ps_pages
[0];
793 * there is no documentation about how to call
794 * kmap_atomic, so we can't hold the mapping
797 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
798 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
799 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
800 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
801 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
802 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
803 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
810 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
811 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
815 ps_page
= &buffer_info
->ps_pages
[j
];
816 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
819 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
820 ps_page
->page
= NULL
;
822 skb
->data_len
+= length
;
823 skb
->truesize
+= length
;
827 total_rx_bytes
+= skb
->len
;
830 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
831 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
833 if (rx_desc
->wb
.upper
.header_status
&
834 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
835 adapter
->rx_hdr_split
++;
837 e1000_receive_skb(adapter
, netdev
, skb
,
838 staterr
, rx_desc
->wb
.middle
.vlan
);
841 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
842 buffer_info
->skb
= NULL
;
844 /* return some buffers to hardware, one at a time is too slow */
845 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
846 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
850 /* use prefetched values */
852 buffer_info
= next_buffer
;
854 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
856 rx_ring
->next_to_clean
= i
;
858 cleaned_count
= e1000_desc_unused(rx_ring
);
860 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
862 adapter
->total_rx_bytes
+= total_rx_bytes
;
863 adapter
->total_rx_packets
+= total_rx_packets
;
864 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
865 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
870 * e1000_consume_page - helper function
872 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
877 skb
->data_len
+= length
;
878 skb
->truesize
+= length
;
882 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
883 * @adapter: board private structure
885 * the return value indicates whether actual cleaning was done, there
886 * is no guarantee that everything was cleaned
889 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
890 int *work_done
, int work_to_do
)
892 struct net_device
*netdev
= adapter
->netdev
;
893 struct pci_dev
*pdev
= adapter
->pdev
;
894 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
895 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
896 struct e1000_buffer
*buffer_info
, *next_buffer
;
899 int cleaned_count
= 0;
900 bool cleaned
= false;
901 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
903 i
= rx_ring
->next_to_clean
;
904 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
905 buffer_info
= &rx_ring
->buffer_info
[i
];
907 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
911 if (*work_done
>= work_to_do
)
915 status
= rx_desc
->status
;
916 skb
= buffer_info
->skb
;
917 buffer_info
->skb
= NULL
;
920 if (i
== rx_ring
->count
)
922 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
925 next_buffer
= &rx_ring
->buffer_info
[i
];
929 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
931 buffer_info
->dma
= 0;
933 length
= le16_to_cpu(rx_desc
->length
);
935 /* errors is only valid for DD + EOP descriptors */
936 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
937 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
938 /* recycle both page and skb */
939 buffer_info
->skb
= skb
;
940 /* an error means any chain goes out the window
942 if (rx_ring
->rx_skb_top
)
943 dev_kfree_skb(rx_ring
->rx_skb_top
);
944 rx_ring
->rx_skb_top
= NULL
;
948 #define rxtop rx_ring->rx_skb_top
949 if (!(status
& E1000_RXD_STAT_EOP
)) {
950 /* this descriptor is only the beginning (or middle) */
952 /* this is the beginning of a chain */
954 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
957 /* this is the middle of a chain */
958 skb_fill_page_desc(rxtop
,
959 skb_shinfo(rxtop
)->nr_frags
,
960 buffer_info
->page
, 0, length
);
961 /* re-use the skb, only consumed the page */
962 buffer_info
->skb
= skb
;
964 e1000_consume_page(buffer_info
, rxtop
, length
);
968 /* end of the chain */
969 skb_fill_page_desc(rxtop
,
970 skb_shinfo(rxtop
)->nr_frags
,
971 buffer_info
->page
, 0, length
);
972 /* re-use the current skb, we only consumed the
974 buffer_info
->skb
= skb
;
977 e1000_consume_page(buffer_info
, skb
, length
);
979 /* no chain, got EOP, this buf is the packet
980 * copybreak to save the put_page/alloc_page */
981 if (length
<= copybreak
&&
982 skb_tailroom(skb
) >= length
) {
984 vaddr
= kmap_atomic(buffer_info
->page
,
985 KM_SKB_DATA_SOFTIRQ
);
986 memcpy(skb_tail_pointer(skb
), vaddr
,
989 KM_SKB_DATA_SOFTIRQ
);
990 /* re-use the page, so don't erase
991 * buffer_info->page */
992 skb_put(skb
, length
);
994 skb_fill_page_desc(skb
, 0,
995 buffer_info
->page
, 0,
997 e1000_consume_page(buffer_info
, skb
,
1003 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1004 e1000_rx_checksum(adapter
,
1006 ((u32
)(rx_desc
->errors
) << 24),
1007 le16_to_cpu(rx_desc
->csum
), skb
);
1009 /* probably a little skewed due to removing CRC */
1010 total_rx_bytes
+= skb
->len
;
1013 /* eth type trans needs skb->data to point to something */
1014 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1015 e_err("pskb_may_pull failed.\n");
1020 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1024 rx_desc
->status
= 0;
1026 /* return some buffers to hardware, one at a time is too slow */
1027 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1028 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1032 /* use prefetched values */
1034 buffer_info
= next_buffer
;
1036 rx_ring
->next_to_clean
= i
;
1038 cleaned_count
= e1000_desc_unused(rx_ring
);
1040 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1042 adapter
->total_rx_bytes
+= total_rx_bytes
;
1043 adapter
->total_rx_packets
+= total_rx_packets
;
1044 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1045 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1050 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1051 * @adapter: board private structure
1053 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1055 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1056 struct e1000_buffer
*buffer_info
;
1057 struct e1000_ps_page
*ps_page
;
1058 struct pci_dev
*pdev
= adapter
->pdev
;
1061 /* Free all the Rx ring sk_buffs */
1062 for (i
= 0; i
< rx_ring
->count
; i
++) {
1063 buffer_info
= &rx_ring
->buffer_info
[i
];
1064 if (buffer_info
->dma
) {
1065 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1066 pci_unmap_single(pdev
, buffer_info
->dma
,
1067 adapter
->rx_buffer_len
,
1068 PCI_DMA_FROMDEVICE
);
1069 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1070 pci_unmap_page(pdev
, buffer_info
->dma
,
1072 PCI_DMA_FROMDEVICE
);
1073 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1074 pci_unmap_single(pdev
, buffer_info
->dma
,
1075 adapter
->rx_ps_bsize0
,
1076 PCI_DMA_FROMDEVICE
);
1077 buffer_info
->dma
= 0;
1080 if (buffer_info
->page
) {
1081 put_page(buffer_info
->page
);
1082 buffer_info
->page
= NULL
;
1085 if (buffer_info
->skb
) {
1086 dev_kfree_skb(buffer_info
->skb
);
1087 buffer_info
->skb
= NULL
;
1090 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1091 ps_page
= &buffer_info
->ps_pages
[j
];
1094 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1095 PCI_DMA_FROMDEVICE
);
1097 put_page(ps_page
->page
);
1098 ps_page
->page
= NULL
;
1102 /* there also may be some cached data from a chained receive */
1103 if (rx_ring
->rx_skb_top
) {
1104 dev_kfree_skb(rx_ring
->rx_skb_top
);
1105 rx_ring
->rx_skb_top
= NULL
;
1108 /* Zero out the descriptor ring */
1109 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1111 rx_ring
->next_to_clean
= 0;
1112 rx_ring
->next_to_use
= 0;
1114 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1115 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1118 static void e1000e_downshift_workaround(struct work_struct
*work
)
1120 struct e1000_adapter
*adapter
= container_of(work
,
1121 struct e1000_adapter
, downshift_task
);
1123 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1127 * e1000_intr_msi - Interrupt Handler
1128 * @irq: interrupt number
1129 * @data: pointer to a network interface device structure
1131 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1133 struct net_device
*netdev
= data
;
1134 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1135 struct e1000_hw
*hw
= &adapter
->hw
;
1136 u32 icr
= er32(ICR
);
1139 * read ICR disables interrupts using IAM
1142 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1143 hw
->mac
.get_link_status
= 1;
1145 * ICH8 workaround-- Call gig speed drop workaround on cable
1146 * disconnect (LSC) before accessing any PHY registers
1148 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1149 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1150 schedule_work(&adapter
->downshift_task
);
1153 * 80003ES2LAN workaround-- For packet buffer work-around on
1154 * link down event; disable receives here in the ISR and reset
1155 * adapter in watchdog
1157 if (netif_carrier_ok(netdev
) &&
1158 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1159 /* disable receives */
1160 u32 rctl
= er32(RCTL
);
1161 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1162 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1164 /* guard against interrupt when we're going down */
1165 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1166 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1169 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1170 adapter
->total_tx_bytes
= 0;
1171 adapter
->total_tx_packets
= 0;
1172 adapter
->total_rx_bytes
= 0;
1173 adapter
->total_rx_packets
= 0;
1174 __netif_rx_schedule(netdev
, &adapter
->napi
);
1181 * e1000_intr - Interrupt Handler
1182 * @irq: interrupt number
1183 * @data: pointer to a network interface device structure
1185 static irqreturn_t
e1000_intr(int irq
, void *data
)
1187 struct net_device
*netdev
= data
;
1188 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1189 struct e1000_hw
*hw
= &adapter
->hw
;
1190 u32 rctl
, icr
= er32(ICR
);
1193 return IRQ_NONE
; /* Not our interrupt */
1196 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1197 * not set, then the adapter didn't send an interrupt
1199 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1203 * Interrupt Auto-Mask...upon reading ICR,
1204 * interrupts are masked. No need for the
1208 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1209 hw
->mac
.get_link_status
= 1;
1211 * ICH8 workaround-- Call gig speed drop workaround on cable
1212 * disconnect (LSC) before accessing any PHY registers
1214 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1215 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1216 schedule_work(&adapter
->downshift_task
);
1219 * 80003ES2LAN workaround--
1220 * For packet buffer work-around on link down event;
1221 * disable receives here in the ISR and
1222 * reset adapter in watchdog
1224 if (netif_carrier_ok(netdev
) &&
1225 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1226 /* disable receives */
1228 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1229 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1231 /* guard against interrupt when we're going down */
1232 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1233 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1236 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1237 adapter
->total_tx_bytes
= 0;
1238 adapter
->total_tx_packets
= 0;
1239 adapter
->total_rx_bytes
= 0;
1240 adapter
->total_rx_packets
= 0;
1241 __netif_rx_schedule(netdev
, &adapter
->napi
);
1247 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1249 struct net_device
*netdev
= data
;
1250 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1251 struct e1000_hw
*hw
= &adapter
->hw
;
1252 u32 icr
= er32(ICR
);
1254 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1255 ew32(IMS
, E1000_IMS_OTHER
);
1259 if (icr
& adapter
->eiac_mask
)
1260 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1262 if (icr
& E1000_ICR_OTHER
) {
1263 if (!(icr
& E1000_ICR_LSC
))
1264 goto no_link_interrupt
;
1265 hw
->mac
.get_link_status
= 1;
1266 /* guard against interrupt when we're going down */
1267 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1268 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1272 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1278 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1280 struct net_device
*netdev
= data
;
1281 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1282 struct e1000_hw
*hw
= &adapter
->hw
;
1283 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1286 adapter
->total_tx_bytes
= 0;
1287 adapter
->total_tx_packets
= 0;
1289 if (!e1000_clean_tx_irq(adapter
))
1290 /* Ring was not completely cleaned, so fire another interrupt */
1291 ew32(ICS
, tx_ring
->ims_val
);
1296 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1298 struct net_device
*netdev
= data
;
1299 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1301 /* Write the ITR value calculated at the end of the
1302 * previous interrupt.
1304 if (adapter
->rx_ring
->set_itr
) {
1305 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1306 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1307 adapter
->rx_ring
->set_itr
= 0;
1310 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1311 adapter
->total_rx_bytes
= 0;
1312 adapter
->total_rx_packets
= 0;
1313 __netif_rx_schedule(netdev
, &adapter
->napi
);
1319 * e1000_configure_msix - Configure MSI-X hardware
1321 * e1000_configure_msix sets up the hardware to properly
1322 * generate MSI-X interrupts.
1324 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1326 struct e1000_hw
*hw
= &adapter
->hw
;
1327 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1328 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1330 u32 ctrl_ext
, ivar
= 0;
1332 adapter
->eiac_mask
= 0;
1334 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1335 if (hw
->mac
.type
== e1000_82574
) {
1336 u32 rfctl
= er32(RFCTL
);
1337 rfctl
|= E1000_RFCTL_ACK_DIS
;
1341 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1342 /* Configure Rx vector */
1343 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1344 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1345 if (rx_ring
->itr_val
)
1346 writel(1000000000 / (rx_ring
->itr_val
* 256),
1347 hw
->hw_addr
+ rx_ring
->itr_register
);
1349 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1350 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1352 /* Configure Tx vector */
1353 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1355 if (tx_ring
->itr_val
)
1356 writel(1000000000 / (tx_ring
->itr_val
* 256),
1357 hw
->hw_addr
+ tx_ring
->itr_register
);
1359 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1360 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1361 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1363 /* set vector for Other Causes, e.g. link changes */
1365 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1366 if (rx_ring
->itr_val
)
1367 writel(1000000000 / (rx_ring
->itr_val
* 256),
1368 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1370 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1372 /* Cause Tx interrupts on every write back */
1377 /* enable MSI-X PBA support */
1378 ctrl_ext
= er32(CTRL_EXT
);
1379 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1381 /* Auto-Mask Other interrupts upon ICR read */
1382 #define E1000_EIAC_MASK_82574 0x01F00000
1383 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1384 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1385 ew32(CTRL_EXT
, ctrl_ext
);
1389 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1391 if (adapter
->msix_entries
) {
1392 pci_disable_msix(adapter
->pdev
);
1393 kfree(adapter
->msix_entries
);
1394 adapter
->msix_entries
= NULL
;
1395 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1396 pci_disable_msi(adapter
->pdev
);
1397 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1404 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1406 * Attempt to configure interrupts using the best available
1407 * capabilities of the hardware and kernel.
1409 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1415 switch (adapter
->int_mode
) {
1416 case E1000E_INT_MODE_MSIX
:
1417 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1418 numvecs
= 3; /* RxQ0, TxQ0 and other */
1419 adapter
->msix_entries
= kcalloc(numvecs
,
1420 sizeof(struct msix_entry
),
1422 if (adapter
->msix_entries
) {
1423 for (i
= 0; i
< numvecs
; i
++)
1424 adapter
->msix_entries
[i
].entry
= i
;
1426 err
= pci_enable_msix(adapter
->pdev
,
1427 adapter
->msix_entries
,
1432 /* MSI-X failed, so fall through and try MSI */
1433 e_err("Failed to initialize MSI-X interrupts. "
1434 "Falling back to MSI interrupts.\n");
1435 e1000e_reset_interrupt_capability(adapter
);
1437 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1439 case E1000E_INT_MODE_MSI
:
1440 if (!pci_enable_msi(adapter
->pdev
)) {
1441 adapter
->flags
|= FLAG_MSI_ENABLED
;
1443 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1444 e_err("Failed to initialize MSI interrupts. Falling "
1445 "back to legacy interrupts.\n");
1448 case E1000E_INT_MODE_LEGACY
:
1449 /* Don't do anything; this is the system default */
1457 * e1000_request_msix - Initialize MSI-X interrupts
1459 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1462 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1464 struct net_device
*netdev
= adapter
->netdev
;
1465 int err
= 0, vector
= 0;
1467 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1468 sprintf(adapter
->rx_ring
->name
, "%s-rx0", netdev
->name
);
1470 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1471 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1472 &e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1476 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1477 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1480 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1481 sprintf(adapter
->tx_ring
->name
, "%s-tx0", netdev
->name
);
1483 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1484 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1485 &e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1489 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1490 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1493 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1494 &e1000_msix_other
, 0, netdev
->name
, netdev
);
1498 e1000_configure_msix(adapter
);
1505 * e1000_request_irq - initialize interrupts
1507 * Attempts to configure interrupts using the best available
1508 * capabilities of the hardware and kernel.
1510 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1512 struct net_device
*netdev
= adapter
->netdev
;
1515 if (adapter
->msix_entries
) {
1516 err
= e1000_request_msix(adapter
);
1519 /* fall back to MSI */
1520 e1000e_reset_interrupt_capability(adapter
);
1521 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1522 e1000e_set_interrupt_capability(adapter
);
1524 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1525 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, 0,
1526 netdev
->name
, netdev
);
1530 /* fall back to legacy interrupt */
1531 e1000e_reset_interrupt_capability(adapter
);
1532 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1535 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, IRQF_SHARED
,
1536 netdev
->name
, netdev
);
1538 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1543 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1545 struct net_device
*netdev
= adapter
->netdev
;
1547 if (adapter
->msix_entries
) {
1550 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1553 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1556 /* Other Causes interrupt vector */
1557 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1561 free_irq(adapter
->pdev
->irq
, netdev
);
1565 * e1000_irq_disable - Mask off interrupt generation on the NIC
1567 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1569 struct e1000_hw
*hw
= &adapter
->hw
;
1572 if (adapter
->msix_entries
)
1573 ew32(EIAC_82574
, 0);
1575 synchronize_irq(adapter
->pdev
->irq
);
1579 * e1000_irq_enable - Enable default interrupt generation settings
1581 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1583 struct e1000_hw
*hw
= &adapter
->hw
;
1585 if (adapter
->msix_entries
) {
1586 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1587 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1589 ew32(IMS
, IMS_ENABLE_MASK
);
1595 * e1000_get_hw_control - get control of the h/w from f/w
1596 * @adapter: address of board private structure
1598 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1599 * For ASF and Pass Through versions of f/w this means that
1600 * the driver is loaded. For AMT version (only with 82573)
1601 * of the f/w this means that the network i/f is open.
1603 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1605 struct e1000_hw
*hw
= &adapter
->hw
;
1609 /* Let firmware know the driver has taken over */
1610 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1612 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1613 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1614 ctrl_ext
= er32(CTRL_EXT
);
1615 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1620 * e1000_release_hw_control - release control of the h/w to f/w
1621 * @adapter: address of board private structure
1623 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1624 * For ASF and Pass Through versions of f/w this means that the
1625 * driver is no longer loaded. For AMT version (only with 82573) i
1626 * of the f/w this means that the network i/f is closed.
1629 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1631 struct e1000_hw
*hw
= &adapter
->hw
;
1635 /* Let firmware taken over control of h/w */
1636 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1638 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1639 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1640 ctrl_ext
= er32(CTRL_EXT
);
1641 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1646 * @e1000_alloc_ring - allocate memory for a ring structure
1648 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1649 struct e1000_ring
*ring
)
1651 struct pci_dev
*pdev
= adapter
->pdev
;
1653 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1662 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1663 * @adapter: board private structure
1665 * Return 0 on success, negative on failure
1667 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1669 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1670 int err
= -ENOMEM
, size
;
1672 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1673 tx_ring
->buffer_info
= vmalloc(size
);
1674 if (!tx_ring
->buffer_info
)
1676 memset(tx_ring
->buffer_info
, 0, size
);
1678 /* round up to nearest 4K */
1679 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1680 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1682 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1686 tx_ring
->next_to_use
= 0;
1687 tx_ring
->next_to_clean
= 0;
1688 spin_lock_init(&adapter
->tx_queue_lock
);
1692 vfree(tx_ring
->buffer_info
);
1693 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1698 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1699 * @adapter: board private structure
1701 * Returns 0 on success, negative on failure
1703 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1705 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1706 struct e1000_buffer
*buffer_info
;
1707 int i
, size
, desc_len
, err
= -ENOMEM
;
1709 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1710 rx_ring
->buffer_info
= vmalloc(size
);
1711 if (!rx_ring
->buffer_info
)
1713 memset(rx_ring
->buffer_info
, 0, size
);
1715 for (i
= 0; i
< rx_ring
->count
; i
++) {
1716 buffer_info
= &rx_ring
->buffer_info
[i
];
1717 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1718 sizeof(struct e1000_ps_page
),
1720 if (!buffer_info
->ps_pages
)
1724 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1726 /* Round up to nearest 4K */
1727 rx_ring
->size
= rx_ring
->count
* desc_len
;
1728 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1730 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1734 rx_ring
->next_to_clean
= 0;
1735 rx_ring
->next_to_use
= 0;
1736 rx_ring
->rx_skb_top
= NULL
;
1741 for (i
= 0; i
< rx_ring
->count
; i
++) {
1742 buffer_info
= &rx_ring
->buffer_info
[i
];
1743 kfree(buffer_info
->ps_pages
);
1746 vfree(rx_ring
->buffer_info
);
1747 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1752 * e1000_clean_tx_ring - Free Tx Buffers
1753 * @adapter: board private structure
1755 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1757 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1758 struct e1000_buffer
*buffer_info
;
1762 for (i
= 0; i
< tx_ring
->count
; i
++) {
1763 buffer_info
= &tx_ring
->buffer_info
[i
];
1764 e1000_put_txbuf(adapter
, buffer_info
);
1767 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1768 memset(tx_ring
->buffer_info
, 0, size
);
1770 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1772 tx_ring
->next_to_use
= 0;
1773 tx_ring
->next_to_clean
= 0;
1775 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1776 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1780 * e1000e_free_tx_resources - Free Tx Resources per Queue
1781 * @adapter: board private structure
1783 * Free all transmit software resources
1785 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1787 struct pci_dev
*pdev
= adapter
->pdev
;
1788 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1790 e1000_clean_tx_ring(adapter
);
1792 vfree(tx_ring
->buffer_info
);
1793 tx_ring
->buffer_info
= NULL
;
1795 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1797 tx_ring
->desc
= NULL
;
1801 * e1000e_free_rx_resources - Free Rx Resources
1802 * @adapter: board private structure
1804 * Free all receive software resources
1807 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1809 struct pci_dev
*pdev
= adapter
->pdev
;
1810 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1813 e1000_clean_rx_ring(adapter
);
1815 for (i
= 0; i
< rx_ring
->count
; i
++) {
1816 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1819 vfree(rx_ring
->buffer_info
);
1820 rx_ring
->buffer_info
= NULL
;
1822 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1824 rx_ring
->desc
= NULL
;
1828 * e1000_update_itr - update the dynamic ITR value based on statistics
1829 * @adapter: pointer to adapter
1830 * @itr_setting: current adapter->itr
1831 * @packets: the number of packets during this measurement interval
1832 * @bytes: the number of bytes during this measurement interval
1834 * Stores a new ITR value based on packets and byte
1835 * counts during the last interrupt. The advantage of per interrupt
1836 * computation is faster updates and more accurate ITR for the current
1837 * traffic pattern. Constants in this function were computed
1838 * based on theoretical maximum wire speed and thresholds were set based
1839 * on testing data as well as attempting to minimize response time
1840 * while increasing bulk throughput. This functionality is controlled
1841 * by the InterruptThrottleRate module parameter.
1843 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1844 u16 itr_setting
, int packets
,
1847 unsigned int retval
= itr_setting
;
1850 goto update_itr_done
;
1852 switch (itr_setting
) {
1853 case lowest_latency
:
1854 /* handle TSO and jumbo frames */
1855 if (bytes
/packets
> 8000)
1856 retval
= bulk_latency
;
1857 else if ((packets
< 5) && (bytes
> 512)) {
1858 retval
= low_latency
;
1861 case low_latency
: /* 50 usec aka 20000 ints/s */
1862 if (bytes
> 10000) {
1863 /* this if handles the TSO accounting */
1864 if (bytes
/packets
> 8000) {
1865 retval
= bulk_latency
;
1866 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1867 retval
= bulk_latency
;
1868 } else if ((packets
> 35)) {
1869 retval
= lowest_latency
;
1871 } else if (bytes
/packets
> 2000) {
1872 retval
= bulk_latency
;
1873 } else if (packets
<= 2 && bytes
< 512) {
1874 retval
= lowest_latency
;
1877 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1878 if (bytes
> 25000) {
1880 retval
= low_latency
;
1882 } else if (bytes
< 6000) {
1883 retval
= low_latency
;
1892 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1894 struct e1000_hw
*hw
= &adapter
->hw
;
1896 u32 new_itr
= adapter
->itr
;
1898 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1899 if (adapter
->link_speed
!= SPEED_1000
) {
1905 adapter
->tx_itr
= e1000_update_itr(adapter
,
1907 adapter
->total_tx_packets
,
1908 adapter
->total_tx_bytes
);
1909 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1910 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1911 adapter
->tx_itr
= low_latency
;
1913 adapter
->rx_itr
= e1000_update_itr(adapter
,
1915 adapter
->total_rx_packets
,
1916 adapter
->total_rx_bytes
);
1917 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1918 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1919 adapter
->rx_itr
= low_latency
;
1921 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1923 switch (current_itr
) {
1924 /* counts and packets in update_itr are dependent on these numbers */
1925 case lowest_latency
:
1929 new_itr
= 20000; /* aka hwitr = ~200 */
1939 if (new_itr
!= adapter
->itr
) {
1941 * this attempts to bias the interrupt rate towards Bulk
1942 * by adding intermediate steps when interrupt rate is
1945 new_itr
= new_itr
> adapter
->itr
?
1946 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1948 adapter
->itr
= new_itr
;
1949 adapter
->rx_ring
->itr_val
= new_itr
;
1950 if (adapter
->msix_entries
)
1951 adapter
->rx_ring
->set_itr
= 1;
1953 ew32(ITR
, 1000000000 / (new_itr
* 256));
1958 * e1000_alloc_queues - Allocate memory for all rings
1959 * @adapter: board private structure to initialize
1961 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1963 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1964 if (!adapter
->tx_ring
)
1967 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1968 if (!adapter
->rx_ring
)
1973 e_err("Unable to allocate memory for queues\n");
1974 kfree(adapter
->rx_ring
);
1975 kfree(adapter
->tx_ring
);
1980 * e1000_clean - NAPI Rx polling callback
1981 * @napi: struct associated with this polling callback
1982 * @budget: amount of packets driver is allowed to process this poll
1984 static int e1000_clean(struct napi_struct
*napi
, int budget
)
1986 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
1987 struct e1000_hw
*hw
= &adapter
->hw
;
1988 struct net_device
*poll_dev
= adapter
->netdev
;
1989 int tx_cleaned
= 0, work_done
= 0;
1991 /* Must NOT use netdev_priv macro here. */
1992 adapter
= poll_dev
->priv
;
1994 if (adapter
->msix_entries
&&
1995 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
1999 * e1000_clean is called per-cpu. This lock protects
2000 * tx_ring from being cleaned by multiple cpus
2001 * simultaneously. A failure obtaining the lock means
2002 * tx_ring is currently being cleaned anyway.
2004 if (spin_trylock(&adapter
->tx_queue_lock
)) {
2005 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2006 spin_unlock(&adapter
->tx_queue_lock
);
2010 adapter
->clean_rx(adapter
, &work_done
, budget
);
2015 /* If budget not fully consumed, exit the polling mode */
2016 if (work_done
< budget
) {
2017 if (adapter
->itr_setting
& 3)
2018 e1000_set_itr(adapter
);
2019 netif_rx_complete(poll_dev
, napi
);
2020 if (adapter
->msix_entries
)
2021 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2023 e1000_irq_enable(adapter
);
2029 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2031 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2032 struct e1000_hw
*hw
= &adapter
->hw
;
2035 /* don't update vlan cookie if already programmed */
2036 if ((adapter
->hw
.mng_cookie
.status
&
2037 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2038 (vid
== adapter
->mng_vlan_id
))
2040 /* add VID to filter table */
2041 index
= (vid
>> 5) & 0x7F;
2042 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2043 vfta
|= (1 << (vid
& 0x1F));
2044 e1000e_write_vfta(hw
, index
, vfta
);
2047 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2049 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2050 struct e1000_hw
*hw
= &adapter
->hw
;
2053 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2054 e1000_irq_disable(adapter
);
2055 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2057 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2058 e1000_irq_enable(adapter
);
2060 if ((adapter
->hw
.mng_cookie
.status
&
2061 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2062 (vid
== adapter
->mng_vlan_id
)) {
2063 /* release control to f/w */
2064 e1000_release_hw_control(adapter
);
2068 /* remove VID from filter table */
2069 index
= (vid
>> 5) & 0x7F;
2070 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2071 vfta
&= ~(1 << (vid
& 0x1F));
2072 e1000e_write_vfta(hw
, index
, vfta
);
2075 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2077 struct net_device
*netdev
= adapter
->netdev
;
2078 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2079 u16 old_vid
= adapter
->mng_vlan_id
;
2081 if (!adapter
->vlgrp
)
2084 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2085 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2086 if (adapter
->hw
.mng_cookie
.status
&
2087 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2088 e1000_vlan_rx_add_vid(netdev
, vid
);
2089 adapter
->mng_vlan_id
= vid
;
2092 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2094 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2095 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2097 adapter
->mng_vlan_id
= vid
;
2102 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2103 struct vlan_group
*grp
)
2105 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2106 struct e1000_hw
*hw
= &adapter
->hw
;
2109 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2110 e1000_irq_disable(adapter
);
2111 adapter
->vlgrp
= grp
;
2114 /* enable VLAN tag insert/strip */
2116 ctrl
|= E1000_CTRL_VME
;
2119 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2120 /* enable VLAN receive filtering */
2122 rctl
&= ~E1000_RCTL_CFIEN
;
2124 e1000_update_mng_vlan(adapter
);
2127 /* disable VLAN tag insert/strip */
2129 ctrl
&= ~E1000_CTRL_VME
;
2132 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2133 if (adapter
->mng_vlan_id
!=
2134 (u16
)E1000_MNG_VLAN_NONE
) {
2135 e1000_vlan_rx_kill_vid(netdev
,
2136 adapter
->mng_vlan_id
);
2137 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2142 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2143 e1000_irq_enable(adapter
);
2146 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2150 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2152 if (!adapter
->vlgrp
)
2155 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2156 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2158 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2162 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
2164 struct e1000_hw
*hw
= &adapter
->hw
;
2167 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2173 * enable receiving management packets to the host. this will probably
2174 * generate destination unreachable messages from the host OS, but
2175 * the packets will be handled on SMBUS
2177 manc
|= E1000_MANC_EN_MNG2HOST
;
2178 manc2h
= er32(MANC2H
);
2179 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2180 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2181 manc2h
|= E1000_MNG2HOST_PORT_623
;
2182 manc2h
|= E1000_MNG2HOST_PORT_664
;
2183 ew32(MANC2H
, manc2h
);
2188 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2189 * @adapter: board private structure
2191 * Configure the Tx unit of the MAC after a reset.
2193 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2195 struct e1000_hw
*hw
= &adapter
->hw
;
2196 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2198 u32 tdlen
, tctl
, tipg
, tarc
;
2201 /* Setup the HW Tx Head and Tail descriptor pointers */
2202 tdba
= tx_ring
->dma
;
2203 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2204 ew32(TDBAL
, (tdba
& DMA_32BIT_MASK
));
2205 ew32(TDBAH
, (tdba
>> 32));
2209 tx_ring
->head
= E1000_TDH
;
2210 tx_ring
->tail
= E1000_TDT
;
2212 /* Set the default values for the Tx Inter Packet Gap timer */
2213 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2214 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2215 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2217 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2218 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2220 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2221 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2224 /* Set the Tx Interrupt Delay register */
2225 ew32(TIDV
, adapter
->tx_int_delay
);
2226 /* Tx irq moderation */
2227 ew32(TADV
, adapter
->tx_abs_int_delay
);
2229 /* Program the Transmit Control Register */
2231 tctl
&= ~E1000_TCTL_CT
;
2232 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2233 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2235 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2236 tarc
= er32(TARC(0));
2238 * set the speed mode bit, we'll clear it if we're not at
2239 * gigabit link later
2241 #define SPEED_MODE_BIT (1 << 21)
2242 tarc
|= SPEED_MODE_BIT
;
2243 ew32(TARC(0), tarc
);
2246 /* errata: program both queues to unweighted RR */
2247 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2248 tarc
= er32(TARC(0));
2250 ew32(TARC(0), tarc
);
2251 tarc
= er32(TARC(1));
2253 ew32(TARC(1), tarc
);
2256 e1000e_config_collision_dist(hw
);
2258 /* Setup Transmit Descriptor Settings for eop descriptor */
2259 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2261 /* only set IDE if we are delaying interrupts using the timers */
2262 if (adapter
->tx_int_delay
)
2263 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2265 /* enable Report Status bit */
2266 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2270 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
2274 * e1000_setup_rctl - configure the receive control registers
2275 * @adapter: Board private structure
2277 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2278 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2279 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2281 struct e1000_hw
*hw
= &adapter
->hw
;
2286 /* Program MC offset vector base */
2288 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2289 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2290 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2291 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2293 /* Do not Store bad packets */
2294 rctl
&= ~E1000_RCTL_SBP
;
2296 /* Enable Long Packet receive */
2297 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2298 rctl
&= ~E1000_RCTL_LPE
;
2300 rctl
|= E1000_RCTL_LPE
;
2302 /* Enable hardware CRC frame stripping */
2303 rctl
|= E1000_RCTL_SECRC
;
2305 /* Setup buffer sizes */
2306 rctl
&= ~E1000_RCTL_SZ_4096
;
2307 rctl
|= E1000_RCTL_BSEX
;
2308 switch (adapter
->rx_buffer_len
) {
2310 rctl
|= E1000_RCTL_SZ_256
;
2311 rctl
&= ~E1000_RCTL_BSEX
;
2314 rctl
|= E1000_RCTL_SZ_512
;
2315 rctl
&= ~E1000_RCTL_BSEX
;
2318 rctl
|= E1000_RCTL_SZ_1024
;
2319 rctl
&= ~E1000_RCTL_BSEX
;
2323 rctl
|= E1000_RCTL_SZ_2048
;
2324 rctl
&= ~E1000_RCTL_BSEX
;
2327 rctl
|= E1000_RCTL_SZ_4096
;
2330 rctl
|= E1000_RCTL_SZ_8192
;
2333 rctl
|= E1000_RCTL_SZ_16384
;
2338 * 82571 and greater support packet-split where the protocol
2339 * header is placed in skb->data and the packet data is
2340 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2341 * In the case of a non-split, skb->data is linearly filled,
2342 * followed by the page buffers. Therefore, skb->data is
2343 * sized to hold the largest protocol header.
2345 * allocations using alloc_page take too long for regular MTU
2346 * so only enable packet split for jumbo frames
2348 * Using pages when the page size is greater than 16k wastes
2349 * a lot of memory, since we allocate 3 pages at all times
2352 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2353 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2354 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2355 adapter
->rx_ps_pages
= pages
;
2357 adapter
->rx_ps_pages
= 0;
2359 if (adapter
->rx_ps_pages
) {
2360 /* Configure extra packet-split registers */
2361 rfctl
= er32(RFCTL
);
2362 rfctl
|= E1000_RFCTL_EXTEN
;
2364 * disable packet split support for IPv6 extension headers,
2365 * because some malformed IPv6 headers can hang the Rx
2367 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2368 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2372 /* Enable Packet split descriptors */
2373 rctl
|= E1000_RCTL_DTYP_PS
;
2375 psrctl
|= adapter
->rx_ps_bsize0
>>
2376 E1000_PSRCTL_BSIZE0_SHIFT
;
2378 switch (adapter
->rx_ps_pages
) {
2380 psrctl
|= PAGE_SIZE
<<
2381 E1000_PSRCTL_BSIZE3_SHIFT
;
2383 psrctl
|= PAGE_SIZE
<<
2384 E1000_PSRCTL_BSIZE2_SHIFT
;
2386 psrctl
|= PAGE_SIZE
>>
2387 E1000_PSRCTL_BSIZE1_SHIFT
;
2391 ew32(PSRCTL
, psrctl
);
2395 /* just started the receive unit, no need to restart */
2396 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2400 * e1000_configure_rx - Configure Receive Unit after Reset
2401 * @adapter: board private structure
2403 * Configure the Rx unit of the MAC after a reset.
2405 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2407 struct e1000_hw
*hw
= &adapter
->hw
;
2408 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2410 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2412 if (adapter
->rx_ps_pages
) {
2413 /* this is a 32 byte descriptor */
2414 rdlen
= rx_ring
->count
*
2415 sizeof(union e1000_rx_desc_packet_split
);
2416 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2417 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2418 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2419 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2420 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2421 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2423 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2424 adapter
->clean_rx
= e1000_clean_rx_irq
;
2425 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2428 /* disable receives while setting up the descriptors */
2430 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2434 /* set the Receive Delay Timer Register */
2435 ew32(RDTR
, adapter
->rx_int_delay
);
2437 /* irq moderation */
2438 ew32(RADV
, adapter
->rx_abs_int_delay
);
2439 if (adapter
->itr_setting
!= 0)
2440 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2442 ctrl_ext
= er32(CTRL_EXT
);
2443 /* Reset delay timers after every interrupt */
2444 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2445 /* Auto-Mask interrupts upon ICR access */
2446 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2447 ew32(IAM
, 0xffffffff);
2448 ew32(CTRL_EXT
, ctrl_ext
);
2452 * Setup the HW Rx Head and Tail Descriptor Pointers and
2453 * the Base and Length of the Rx Descriptor Ring
2455 rdba
= rx_ring
->dma
;
2456 ew32(RDBAL
, (rdba
& DMA_32BIT_MASK
));
2457 ew32(RDBAH
, (rdba
>> 32));
2461 rx_ring
->head
= E1000_RDH
;
2462 rx_ring
->tail
= E1000_RDT
;
2464 /* Enable Receive Checksum Offload for TCP and UDP */
2465 rxcsum
= er32(RXCSUM
);
2466 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2467 rxcsum
|= E1000_RXCSUM_TUOFL
;
2470 * IPv4 payload checksum for UDP fragments must be
2471 * used in conjunction with packet-split.
2473 if (adapter
->rx_ps_pages
)
2474 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2476 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2477 /* no need to clear IPPCSE as it defaults to 0 */
2479 ew32(RXCSUM
, rxcsum
);
2482 * Enable early receives on supported devices, only takes effect when
2483 * packet size is equal or larger than the specified value (in 8 byte
2484 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2486 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2487 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2488 u32 rxdctl
= er32(RXDCTL(0));
2489 ew32(RXDCTL(0), rxdctl
| 0x3);
2490 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2492 * With jumbo frames and early-receive enabled, excessive
2493 * C4->C2 latencies result in dropped transactions.
2495 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2496 e1000e_driver_name
, 55);
2498 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2500 PM_QOS_DEFAULT_VALUE
);
2503 /* Enable Receives */
2508 * e1000_update_mc_addr_list - Update Multicast addresses
2509 * @hw: pointer to the HW structure
2510 * @mc_addr_list: array of multicast addresses to program
2511 * @mc_addr_count: number of multicast addresses to program
2512 * @rar_used_count: the first RAR register free to program
2513 * @rar_count: total number of supported Receive Address Registers
2515 * Updates the Receive Address Registers and Multicast Table Array.
2516 * The caller must have a packed mc_addr_list of multicast addresses.
2517 * The parameter rar_count will usually be hw->mac.rar_entry_count
2518 * unless there are workarounds that change this. Currently no func pointer
2519 * exists and all implementations are handled in the generic version of this
2522 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2523 u32 mc_addr_count
, u32 rar_used_count
,
2526 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2527 rar_used_count
, rar_count
);
2531 * e1000_set_multi - Multicast and Promiscuous mode set
2532 * @netdev: network interface device structure
2534 * The set_multi entry point is called whenever the multicast address
2535 * list or the network interface flags are updated. This routine is
2536 * responsible for configuring the hardware for proper multicast,
2537 * promiscuous mode, and all-multi behavior.
2539 static void e1000_set_multi(struct net_device
*netdev
)
2541 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2542 struct e1000_hw
*hw
= &adapter
->hw
;
2543 struct e1000_mac_info
*mac
= &hw
->mac
;
2544 struct dev_mc_list
*mc_ptr
;
2549 /* Check for Promiscuous and All Multicast modes */
2553 if (netdev
->flags
& IFF_PROMISC
) {
2554 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2555 rctl
&= ~E1000_RCTL_VFE
;
2557 if (netdev
->flags
& IFF_ALLMULTI
) {
2558 rctl
|= E1000_RCTL_MPE
;
2559 rctl
&= ~E1000_RCTL_UPE
;
2561 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2563 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2564 rctl
|= E1000_RCTL_VFE
;
2569 if (netdev
->mc_count
) {
2570 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2574 /* prepare a packed array of only addresses. */
2575 mc_ptr
= netdev
->mc_list
;
2577 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2580 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2582 mc_ptr
= mc_ptr
->next
;
2585 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2586 mac
->rar_entry_count
);
2590 * if we're called from probe, we might not have
2591 * anything to do here, so clear out the list
2593 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2598 * e1000_configure - configure the hardware for Rx and Tx
2599 * @adapter: private board structure
2601 static void e1000_configure(struct e1000_adapter
*adapter
)
2603 e1000_set_multi(adapter
->netdev
);
2605 e1000_restore_vlan(adapter
);
2606 e1000_init_manageability(adapter
);
2608 e1000_configure_tx(adapter
);
2609 e1000_setup_rctl(adapter
);
2610 e1000_configure_rx(adapter
);
2611 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2615 * e1000e_power_up_phy - restore link in case the phy was powered down
2616 * @adapter: address of board private structure
2618 * The phy may be powered down to save power and turn off link when the
2619 * driver is unloaded and wake on lan is not enabled (among others)
2620 * *** this routine MUST be followed by a call to e1000e_reset ***
2622 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2626 /* Just clear the power down bit to wake the phy back up */
2627 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2629 * According to the manual, the phy will retain its
2630 * settings across a power-down/up cycle
2632 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2633 mii_reg
&= ~MII_CR_POWER_DOWN
;
2634 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2637 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2641 * e1000_power_down_phy - Power down the PHY
2643 * Power down the PHY so no link is implied when interface is down
2644 * The PHY cannot be powered down is management or WoL is active
2646 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2648 struct e1000_hw
*hw
= &adapter
->hw
;
2651 /* WoL is enabled */
2655 /* non-copper PHY? */
2656 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2659 /* reset is blocked because of a SoL/IDER session */
2660 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2663 /* manageability (AMT) is enabled */
2664 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2667 /* power down the PHY */
2668 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2669 mii_reg
|= MII_CR_POWER_DOWN
;
2670 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2675 * e1000e_reset - bring the hardware into a known good state
2677 * This function boots the hardware and enables some settings that
2678 * require a configuration cycle of the hardware - those cannot be
2679 * set/changed during runtime. After reset the device needs to be
2680 * properly configured for Rx, Tx etc.
2682 void e1000e_reset(struct e1000_adapter
*adapter
)
2684 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2685 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2686 struct e1000_hw
*hw
= &adapter
->hw
;
2687 u32 tx_space
, min_tx_space
, min_rx_space
;
2688 u32 pba
= adapter
->pba
;
2691 /* reset Packet Buffer Allocation to default */
2694 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2696 * To maintain wire speed transmits, the Tx FIFO should be
2697 * large enough to accommodate two full transmit packets,
2698 * rounded up to the next 1KB and expressed in KB. Likewise,
2699 * the Rx FIFO should be large enough to accommodate at least
2700 * one full receive packet and is similarly rounded up and
2704 /* upper 16 bits has Tx packet buffer allocation size in KB */
2705 tx_space
= pba
>> 16;
2706 /* lower 16 bits has Rx packet buffer allocation size in KB */
2709 * the Tx fifo also stores 16 bytes of information about the tx
2710 * but don't include ethernet FCS because hardware appends it
2712 min_tx_space
= (adapter
->max_frame_size
+
2713 sizeof(struct e1000_tx_desc
) -
2715 min_tx_space
= ALIGN(min_tx_space
, 1024);
2716 min_tx_space
>>= 10;
2717 /* software strips receive CRC, so leave room for it */
2718 min_rx_space
= adapter
->max_frame_size
;
2719 min_rx_space
= ALIGN(min_rx_space
, 1024);
2720 min_rx_space
>>= 10;
2723 * If current Tx allocation is less than the min Tx FIFO size,
2724 * and the min Tx FIFO size is less than the current Rx FIFO
2725 * allocation, take space away from current Rx allocation
2727 if ((tx_space
< min_tx_space
) &&
2728 ((min_tx_space
- tx_space
) < pba
)) {
2729 pba
-= min_tx_space
- tx_space
;
2732 * if short on Rx space, Rx wins and must trump tx
2733 * adjustment or use Early Receive if available
2735 if ((pba
< min_rx_space
) &&
2736 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2737 /* ERT enabled in e1000_configure_rx */
2746 * flow control settings
2748 * The high water mark must be low enough to fit one full frame
2749 * (or the size used for early receive) above it in the Rx FIFO.
2750 * Set it to the lower of:
2751 * - 90% of the Rx FIFO size, and
2752 * - the full Rx FIFO size minus the early receive size (for parts
2753 * with ERT support assuming ERT set to E1000_ERT_2048), or
2754 * - the full Rx FIFO size minus one full frame
2756 if (adapter
->flags
& FLAG_HAS_ERT
)
2757 hwm
= min(((pba
<< 10) * 9 / 10),
2758 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2760 hwm
= min(((pba
<< 10) * 9 / 10),
2761 ((pba
<< 10) - adapter
->max_frame_size
));
2763 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2764 fc
->low_water
= fc
->high_water
- 8;
2766 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2767 fc
->pause_time
= 0xFFFF;
2769 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2771 fc
->type
= fc
->original_type
;
2773 /* Allow time for pending master requests to run */
2774 mac
->ops
.reset_hw(hw
);
2777 * For parts with AMT enabled, let the firmware know
2778 * that the network interface is in control
2780 if (adapter
->flags
& FLAG_HAS_AMT
)
2781 e1000_get_hw_control(adapter
);
2785 if (mac
->ops
.init_hw(hw
))
2786 e_err("Hardware Error\n");
2788 e1000_update_mng_vlan(adapter
);
2790 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2791 ew32(VET
, ETH_P_8021Q
);
2793 e1000e_reset_adaptive(hw
);
2794 e1000_get_phy_info(hw
);
2796 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2799 * speed up time to link by disabling smart power down, ignore
2800 * the return value of this function because there is nothing
2801 * different we would do if it failed
2803 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2804 phy_data
&= ~IGP02E1000_PM_SPD
;
2805 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2809 int e1000e_up(struct e1000_adapter
*adapter
)
2811 struct e1000_hw
*hw
= &adapter
->hw
;
2813 /* hardware has been reset, we need to reload some things */
2814 e1000_configure(adapter
);
2816 clear_bit(__E1000_DOWN
, &adapter
->state
);
2818 napi_enable(&adapter
->napi
);
2819 if (adapter
->msix_entries
)
2820 e1000_configure_msix(adapter
);
2821 e1000_irq_enable(adapter
);
2823 /* fire a link change interrupt to start the watchdog */
2824 ew32(ICS
, E1000_ICS_LSC
);
2828 void e1000e_down(struct e1000_adapter
*adapter
)
2830 struct net_device
*netdev
= adapter
->netdev
;
2831 struct e1000_hw
*hw
= &adapter
->hw
;
2835 * signal that we're down so the interrupt handler does not
2836 * reschedule our watchdog timer
2838 set_bit(__E1000_DOWN
, &adapter
->state
);
2840 /* disable receives in the hardware */
2842 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2843 /* flush and sleep below */
2845 netif_tx_stop_all_queues(netdev
);
2847 /* disable transmits in the hardware */
2849 tctl
&= ~E1000_TCTL_EN
;
2851 /* flush both disables and wait for them to finish */
2855 napi_disable(&adapter
->napi
);
2856 e1000_irq_disable(adapter
);
2858 del_timer_sync(&adapter
->watchdog_timer
);
2859 del_timer_sync(&adapter
->phy_info_timer
);
2861 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2862 netif_carrier_off(netdev
);
2863 adapter
->link_speed
= 0;
2864 adapter
->link_duplex
= 0;
2866 if (!pci_channel_offline(adapter
->pdev
))
2867 e1000e_reset(adapter
);
2868 e1000_clean_tx_ring(adapter
);
2869 e1000_clean_rx_ring(adapter
);
2872 * TODO: for power management, we could drop the link and
2873 * pci_disable_device here.
2877 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2880 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2882 e1000e_down(adapter
);
2884 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2888 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2889 * @adapter: board private structure to initialize
2891 * e1000_sw_init initializes the Adapter private data structure.
2892 * Fields are initialized based on PCI device information and
2893 * OS network device settings (MTU size).
2895 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2897 struct net_device
*netdev
= adapter
->netdev
;
2899 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2900 adapter
->rx_ps_bsize0
= 128;
2901 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2902 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2904 e1000e_set_interrupt_capability(adapter
);
2906 if (e1000_alloc_queues(adapter
))
2909 spin_lock_init(&adapter
->tx_queue_lock
);
2911 /* Explicitly disable IRQ since the NIC can be in any state. */
2912 e1000_irq_disable(adapter
);
2914 set_bit(__E1000_DOWN
, &adapter
->state
);
2919 * e1000_intr_msi_test - Interrupt Handler
2920 * @irq: interrupt number
2921 * @data: pointer to a network interface device structure
2923 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
2925 struct net_device
*netdev
= data
;
2926 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2927 struct e1000_hw
*hw
= &adapter
->hw
;
2928 u32 icr
= er32(ICR
);
2930 e_dbg("%s: icr is %08X\n", netdev
->name
, icr
);
2931 if (icr
& E1000_ICR_RXSEQ
) {
2932 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
2940 * e1000_test_msi_interrupt - Returns 0 for successful test
2941 * @adapter: board private struct
2943 * code flow taken from tg3.c
2945 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
2947 struct net_device
*netdev
= adapter
->netdev
;
2948 struct e1000_hw
*hw
= &adapter
->hw
;
2951 /* poll_enable hasn't been called yet, so don't need disable */
2952 /* clear any pending events */
2955 /* free the real vector and request a test handler */
2956 e1000_free_irq(adapter
);
2957 e1000e_reset_interrupt_capability(adapter
);
2959 /* Assume that the test fails, if it succeeds then the test
2960 * MSI irq handler will unset this flag */
2961 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
2963 err
= pci_enable_msi(adapter
->pdev
);
2965 goto msi_test_failed
;
2967 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi_test
, 0,
2968 netdev
->name
, netdev
);
2970 pci_disable_msi(adapter
->pdev
);
2971 goto msi_test_failed
;
2976 e1000_irq_enable(adapter
);
2978 /* fire an unusual interrupt on the test handler */
2979 ew32(ICS
, E1000_ICS_RXSEQ
);
2983 e1000_irq_disable(adapter
);
2987 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
2988 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2990 e_info("MSI interrupt test failed!\n");
2993 free_irq(adapter
->pdev
->irq
, netdev
);
2994 pci_disable_msi(adapter
->pdev
);
2997 goto msi_test_failed
;
2999 /* okay so the test worked, restore settings */
3000 e_dbg("%s: MSI interrupt test succeeded!\n", netdev
->name
);
3002 e1000e_set_interrupt_capability(adapter
);
3003 e1000_request_irq(adapter
);
3008 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3009 * @adapter: board private struct
3011 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3013 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3018 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3021 /* disable SERR in case the MSI write causes a master abort */
3022 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3023 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3024 pci_cmd
& ~PCI_COMMAND_SERR
);
3026 err
= e1000_test_msi_interrupt(adapter
);
3028 /* restore previous setting of command word */
3029 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3035 /* EIO means MSI test failed */
3039 /* back to INTx mode */
3040 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3042 e1000_free_irq(adapter
);
3044 err
= e1000_request_irq(adapter
);
3050 * e1000_open - Called when a network interface is made active
3051 * @netdev: network interface device structure
3053 * Returns 0 on success, negative value on failure
3055 * The open entry point is called when a network interface is made
3056 * active by the system (IFF_UP). At this point all resources needed
3057 * for transmit and receive operations are allocated, the interrupt
3058 * handler is registered with the OS, the watchdog timer is started,
3059 * and the stack is notified that the interface is ready.
3061 static int e1000_open(struct net_device
*netdev
)
3063 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3064 struct e1000_hw
*hw
= &adapter
->hw
;
3067 /* disallow open during test */
3068 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3071 /* allocate transmit descriptors */
3072 err
= e1000e_setup_tx_resources(adapter
);
3076 /* allocate receive descriptors */
3077 err
= e1000e_setup_rx_resources(adapter
);
3081 e1000e_power_up_phy(adapter
);
3083 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3084 if ((adapter
->hw
.mng_cookie
.status
&
3085 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3086 e1000_update_mng_vlan(adapter
);
3089 * If AMT is enabled, let the firmware know that the network
3090 * interface is now open
3092 if (adapter
->flags
& FLAG_HAS_AMT
)
3093 e1000_get_hw_control(adapter
);
3096 * before we allocate an interrupt, we must be ready to handle it.
3097 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3098 * as soon as we call pci_request_irq, so we have to setup our
3099 * clean_rx handler before we do so.
3101 e1000_configure(adapter
);
3103 err
= e1000_request_irq(adapter
);
3108 * Work around PCIe errata with MSI interrupts causing some chipsets to
3109 * ignore e1000e MSI messages, which means we need to test our MSI
3112 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3113 err
= e1000_test_msi(adapter
);
3115 e_err("Interrupt allocation failed\n");
3120 /* From here on the code is the same as e1000e_up() */
3121 clear_bit(__E1000_DOWN
, &adapter
->state
);
3123 napi_enable(&adapter
->napi
);
3125 e1000_irq_enable(adapter
);
3127 netif_tx_start_all_queues(netdev
);
3129 /* fire a link status change interrupt to start the watchdog */
3130 ew32(ICS
, E1000_ICS_LSC
);
3135 e1000_release_hw_control(adapter
);
3136 e1000_power_down_phy(adapter
);
3137 e1000e_free_rx_resources(adapter
);
3139 e1000e_free_tx_resources(adapter
);
3141 e1000e_reset(adapter
);
3147 * e1000_close - Disables a network interface
3148 * @netdev: network interface device structure
3150 * Returns 0, this is not allowed to fail
3152 * The close entry point is called when an interface is de-activated
3153 * by the OS. The hardware is still under the drivers control, but
3154 * needs to be disabled. A global MAC reset is issued to stop the
3155 * hardware, and all transmit and receive resources are freed.
3157 static int e1000_close(struct net_device
*netdev
)
3159 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3161 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3162 e1000e_down(adapter
);
3163 e1000_power_down_phy(adapter
);
3164 e1000_free_irq(adapter
);
3166 e1000e_free_tx_resources(adapter
);
3167 e1000e_free_rx_resources(adapter
);
3170 * kill manageability vlan ID if supported, but not if a vlan with
3171 * the same ID is registered on the host OS (let 8021q kill it)
3173 if ((adapter
->hw
.mng_cookie
.status
&
3174 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3176 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3177 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3180 * If AMT is enabled, let the firmware know that the network
3181 * interface is now closed
3183 if (adapter
->flags
& FLAG_HAS_AMT
)
3184 e1000_release_hw_control(adapter
);
3189 * e1000_set_mac - Change the Ethernet Address of the NIC
3190 * @netdev: network interface device structure
3191 * @p: pointer to an address structure
3193 * Returns 0 on success, negative on failure
3195 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3197 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3198 struct sockaddr
*addr
= p
;
3200 if (!is_valid_ether_addr(addr
->sa_data
))
3201 return -EADDRNOTAVAIL
;
3203 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3204 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3206 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3208 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3209 /* activate the work around */
3210 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3213 * Hold a copy of the LAA in RAR[14] This is done so that
3214 * between the time RAR[0] gets clobbered and the time it
3215 * gets fixed (in e1000_watchdog), the actual LAA is in one
3216 * of the RARs and no incoming packets directed to this port
3217 * are dropped. Eventually the LAA will be in RAR[0] and
3220 e1000e_rar_set(&adapter
->hw
,
3221 adapter
->hw
.mac
.addr
,
3222 adapter
->hw
.mac
.rar_entry_count
- 1);
3229 * e1000e_update_phy_task - work thread to update phy
3230 * @work: pointer to our work struct
3232 * this worker thread exists because we must acquire a
3233 * semaphore to read the phy, which we could msleep while
3234 * waiting for it, and we can't msleep in a timer.
3236 static void e1000e_update_phy_task(struct work_struct
*work
)
3238 struct e1000_adapter
*adapter
= container_of(work
,
3239 struct e1000_adapter
, update_phy_task
);
3240 e1000_get_phy_info(&adapter
->hw
);
3244 * Need to wait a few seconds after link up to get diagnostic information from
3247 static void e1000_update_phy_info(unsigned long data
)
3249 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3250 schedule_work(&adapter
->update_phy_task
);
3254 * e1000e_update_stats - Update the board statistics counters
3255 * @adapter: board private structure
3257 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3259 struct e1000_hw
*hw
= &adapter
->hw
;
3260 struct pci_dev
*pdev
= adapter
->pdev
;
3263 * Prevent stats update while adapter is being reset, or if the pci
3264 * connection is down.
3266 if (adapter
->link_speed
== 0)
3268 if (pci_channel_offline(pdev
))
3271 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3272 adapter
->stats
.gprc
+= er32(GPRC
);
3273 adapter
->stats
.gorc
+= er32(GORCL
);
3274 er32(GORCH
); /* Clear gorc */
3275 adapter
->stats
.bprc
+= er32(BPRC
);
3276 adapter
->stats
.mprc
+= er32(MPRC
);
3277 adapter
->stats
.roc
+= er32(ROC
);
3279 adapter
->stats
.mpc
+= er32(MPC
);
3280 adapter
->stats
.scc
+= er32(SCC
);
3281 adapter
->stats
.ecol
+= er32(ECOL
);
3282 adapter
->stats
.mcc
+= er32(MCC
);
3283 adapter
->stats
.latecol
+= er32(LATECOL
);
3284 adapter
->stats
.dc
+= er32(DC
);
3285 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3286 adapter
->stats
.xontxc
+= er32(XONTXC
);
3287 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3288 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3289 adapter
->stats
.gptc
+= er32(GPTC
);
3290 adapter
->stats
.gotc
+= er32(GOTCL
);
3291 er32(GOTCH
); /* Clear gotc */
3292 adapter
->stats
.rnbc
+= er32(RNBC
);
3293 adapter
->stats
.ruc
+= er32(RUC
);
3295 adapter
->stats
.mptc
+= er32(MPTC
);
3296 adapter
->stats
.bptc
+= er32(BPTC
);
3298 /* used for adaptive IFS */
3300 hw
->mac
.tx_packet_delta
= er32(TPT
);
3301 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3302 hw
->mac
.collision_delta
= er32(COLC
);
3303 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3305 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3306 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3307 if (hw
->mac
.type
!= e1000_82574
)
3308 adapter
->stats
.tncrs
+= er32(TNCRS
);
3309 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3310 adapter
->stats
.tsctc
+= er32(TSCTC
);
3311 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3313 /* Fill out the OS statistics structure */
3314 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3315 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3320 * RLEC on some newer hardware can be incorrect so build
3321 * our own version based on RUC and ROC
3323 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3324 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3325 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3326 adapter
->stats
.cexterr
;
3327 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3329 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3330 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3331 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3334 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3335 adapter
->stats
.latecol
;
3336 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3337 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3338 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3340 /* Tx Dropped needs to be maintained elsewhere */
3342 /* Management Stats */
3343 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3344 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3345 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3349 * e1000_phy_read_status - Update the PHY register status snapshot
3350 * @adapter: board private structure
3352 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3354 struct e1000_hw
*hw
= &adapter
->hw
;
3355 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3358 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3359 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3360 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3361 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3362 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3363 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3364 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3365 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3366 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3367 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3369 e_warn("Error reading PHY register\n");
3372 * Do not read PHY registers if link is not up
3373 * Set values to typical power-on defaults
3375 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3376 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3377 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3379 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3380 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3382 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3383 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3385 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3389 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3391 struct e1000_hw
*hw
= &adapter
->hw
;
3392 u32 ctrl
= er32(CTRL
);
3394 e_info("Link is Up %d Mbps %s, Flow Control: %s\n",
3395 adapter
->link_speed
,
3396 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3397 "Full Duplex" : "Half Duplex",
3398 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3400 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3401 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3404 static bool e1000_has_link(struct e1000_adapter
*adapter
)
3406 struct e1000_hw
*hw
= &adapter
->hw
;
3407 bool link_active
= 0;
3411 * get_link_status is set on LSC (link status) interrupt or
3412 * Rx sequence error interrupt. get_link_status will stay
3413 * false until the check_for_link establishes link
3414 * for copper adapters ONLY
3416 switch (hw
->phy
.media_type
) {
3417 case e1000_media_type_copper
:
3418 if (hw
->mac
.get_link_status
) {
3419 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3420 link_active
= !hw
->mac
.get_link_status
;
3425 case e1000_media_type_fiber
:
3426 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3427 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
3429 case e1000_media_type_internal_serdes
:
3430 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3431 link_active
= adapter
->hw
.mac
.serdes_has_link
;
3434 case e1000_media_type_unknown
:
3438 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
3439 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
3440 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3441 e_info("Gigabit has been disabled, downgrading speed\n");
3447 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3449 /* make sure the receive unit is started */
3450 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3451 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3452 struct e1000_hw
*hw
= &adapter
->hw
;
3453 u32 rctl
= er32(RCTL
);
3454 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3455 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3460 * e1000_watchdog - Timer Call-back
3461 * @data: pointer to adapter cast into an unsigned long
3463 static void e1000_watchdog(unsigned long data
)
3465 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3467 /* Do the rest outside of interrupt context */
3468 schedule_work(&adapter
->watchdog_task
);
3470 /* TODO: make this use queue_delayed_work() */
3473 static void e1000_watchdog_task(struct work_struct
*work
)
3475 struct e1000_adapter
*adapter
= container_of(work
,
3476 struct e1000_adapter
, watchdog_task
);
3477 struct net_device
*netdev
= adapter
->netdev
;
3478 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3479 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3480 struct e1000_hw
*hw
= &adapter
->hw
;
3484 link
= e1000_has_link(adapter
);
3485 if ((netif_carrier_ok(netdev
)) && link
) {
3486 e1000e_enable_receives(adapter
);
3490 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3491 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3492 e1000_update_mng_vlan(adapter
);
3495 if (!netif_carrier_ok(netdev
)) {
3497 /* update snapshot of PHY registers on LSC */
3498 e1000_phy_read_status(adapter
);
3499 mac
->ops
.get_link_up_info(&adapter
->hw
,
3500 &adapter
->link_speed
,
3501 &adapter
->link_duplex
);
3502 e1000_print_link_info(adapter
);
3504 * On supported PHYs, check for duplex mismatch only
3505 * if link has autonegotiated at 10/100 half
3507 if ((hw
->phy
.type
== e1000_phy_igp_3
||
3508 hw
->phy
.type
== e1000_phy_bm
) &&
3509 (hw
->mac
.autoneg
== true) &&
3510 (adapter
->link_speed
== SPEED_10
||
3511 adapter
->link_speed
== SPEED_100
) &&
3512 (adapter
->link_duplex
== HALF_DUPLEX
)) {
3515 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
3517 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
3518 e_info("Autonegotiated half duplex but"
3519 " link partner cannot autoneg. "
3520 " Try forcing full duplex if "
3521 "link gets many collisions.\n");
3525 * tweak tx_queue_len according to speed/duplex
3526 * and adjust the timeout factor
3528 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3529 adapter
->tx_timeout_factor
= 1;
3530 switch (adapter
->link_speed
) {
3533 netdev
->tx_queue_len
= 10;
3534 adapter
->tx_timeout_factor
= 16;
3538 netdev
->tx_queue_len
= 100;
3539 /* maybe add some timeout factor ? */
3544 * workaround: re-program speed mode bit after
3547 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3550 tarc0
= er32(TARC(0));
3551 tarc0
&= ~SPEED_MODE_BIT
;
3552 ew32(TARC(0), tarc0
);
3556 * disable TSO for pcie and 10/100 speeds, to avoid
3557 * some hardware issues
3559 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3560 switch (adapter
->link_speed
) {
3563 e_info("10/100 speed: disabling TSO\n");
3564 netdev
->features
&= ~NETIF_F_TSO
;
3565 netdev
->features
&= ~NETIF_F_TSO6
;
3568 netdev
->features
|= NETIF_F_TSO
;
3569 netdev
->features
|= NETIF_F_TSO6
;
3578 * enable transmits in the hardware, need to do this
3579 * after setting TARC(0)
3582 tctl
|= E1000_TCTL_EN
;
3585 netif_carrier_on(netdev
);
3586 netif_tx_wake_all_queues(netdev
);
3588 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3589 mod_timer(&adapter
->phy_info_timer
,
3590 round_jiffies(jiffies
+ 2 * HZ
));
3593 if (netif_carrier_ok(netdev
)) {
3594 adapter
->link_speed
= 0;
3595 adapter
->link_duplex
= 0;
3596 e_info("Link is Down\n");
3597 netif_carrier_off(netdev
);
3598 netif_tx_stop_all_queues(netdev
);
3599 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3600 mod_timer(&adapter
->phy_info_timer
,
3601 round_jiffies(jiffies
+ 2 * HZ
));
3603 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3604 schedule_work(&adapter
->reset_task
);
3609 e1000e_update_stats(adapter
);
3611 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3612 adapter
->tpt_old
= adapter
->stats
.tpt
;
3613 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3614 adapter
->colc_old
= adapter
->stats
.colc
;
3616 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3617 adapter
->gorc_old
= adapter
->stats
.gorc
;
3618 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3619 adapter
->gotc_old
= adapter
->stats
.gotc
;
3621 e1000e_update_adaptive(&adapter
->hw
);
3623 if (!netif_carrier_ok(netdev
)) {
3624 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3628 * We've lost link, so the controller stops DMA,
3629 * but we've got queued Tx work that's never going
3630 * to get done, so reset controller to flush Tx.
3631 * (Do the reset outside of interrupt context).
3633 adapter
->tx_timeout_count
++;
3634 schedule_work(&adapter
->reset_task
);
3638 /* Cause software interrupt to ensure Rx ring is cleaned */
3639 if (adapter
->msix_entries
)
3640 ew32(ICS
, adapter
->rx_ring
->ims_val
);
3642 ew32(ICS
, E1000_ICS_RXDMT0
);
3644 /* Force detection of hung controller every watchdog period */
3645 adapter
->detect_tx_hung
= 1;
3648 * With 82571 controllers, LAA may be overwritten due to controller
3649 * reset from the other port. Set the appropriate LAA in RAR[0]
3651 if (e1000e_get_laa_state_82571(hw
))
3652 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3654 /* Reset the timer */
3655 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3656 mod_timer(&adapter
->watchdog_timer
,
3657 round_jiffies(jiffies
+ 2 * HZ
));
3660 #define E1000_TX_FLAGS_CSUM 0x00000001
3661 #define E1000_TX_FLAGS_VLAN 0x00000002
3662 #define E1000_TX_FLAGS_TSO 0x00000004
3663 #define E1000_TX_FLAGS_IPV4 0x00000008
3664 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3665 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3667 static int e1000_tso(struct e1000_adapter
*adapter
,
3668 struct sk_buff
*skb
)
3670 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3671 struct e1000_context_desc
*context_desc
;
3672 struct e1000_buffer
*buffer_info
;
3675 u16 ipcse
= 0, tucse
, mss
;
3676 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3679 if (skb_is_gso(skb
)) {
3680 if (skb_header_cloned(skb
)) {
3681 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3686 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3687 mss
= skb_shinfo(skb
)->gso_size
;
3688 if (skb
->protocol
== htons(ETH_P_IP
)) {
3689 struct iphdr
*iph
= ip_hdr(skb
);
3692 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3696 cmd_length
= E1000_TXD_CMD_IP
;
3697 ipcse
= skb_transport_offset(skb
) - 1;
3698 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3699 ipv6_hdr(skb
)->payload_len
= 0;
3700 tcp_hdr(skb
)->check
=
3701 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3702 &ipv6_hdr(skb
)->daddr
,
3706 ipcss
= skb_network_offset(skb
);
3707 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3708 tucss
= skb_transport_offset(skb
);
3709 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3712 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3713 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3715 i
= tx_ring
->next_to_use
;
3716 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3717 buffer_info
= &tx_ring
->buffer_info
[i
];
3719 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3720 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3721 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3722 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3723 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3724 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3725 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3726 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3727 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3729 buffer_info
->time_stamp
= jiffies
;
3730 buffer_info
->next_to_watch
= i
;
3733 if (i
== tx_ring
->count
)
3735 tx_ring
->next_to_use
= i
;
3743 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3745 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3746 struct e1000_context_desc
*context_desc
;
3747 struct e1000_buffer
*buffer_info
;
3750 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
3752 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
3755 switch (skb
->protocol
) {
3756 case __constant_htons(ETH_P_IP
):
3757 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3758 cmd_len
|= E1000_TXD_CMD_TCP
;
3760 case __constant_htons(ETH_P_IPV6
):
3761 /* XXX not handling all IPV6 headers */
3762 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3763 cmd_len
|= E1000_TXD_CMD_TCP
;
3766 if (unlikely(net_ratelimit()))
3767 e_warn("checksum_partial proto=%x!\n", skb
->protocol
);
3771 css
= skb_transport_offset(skb
);
3773 i
= tx_ring
->next_to_use
;
3774 buffer_info
= &tx_ring
->buffer_info
[i
];
3775 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3777 context_desc
->lower_setup
.ip_config
= 0;
3778 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3779 context_desc
->upper_setup
.tcp_fields
.tucso
=
3780 css
+ skb
->csum_offset
;
3781 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3782 context_desc
->tcp_seg_setup
.data
= 0;
3783 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
3785 buffer_info
->time_stamp
= jiffies
;
3786 buffer_info
->next_to_watch
= i
;
3789 if (i
== tx_ring
->count
)
3791 tx_ring
->next_to_use
= i
;
3796 #define E1000_MAX_PER_TXD 8192
3797 #define E1000_MAX_TXD_PWR 12
3799 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3800 struct sk_buff
*skb
, unsigned int first
,
3801 unsigned int max_per_txd
, unsigned int nr_frags
,
3804 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3805 struct e1000_buffer
*buffer_info
;
3806 unsigned int len
= skb
->len
- skb
->data_len
;
3807 unsigned int offset
= 0, size
, count
= 0, i
;
3810 i
= tx_ring
->next_to_use
;
3813 buffer_info
= &tx_ring
->buffer_info
[i
];
3814 size
= min(len
, max_per_txd
);
3816 /* Workaround for premature desc write-backs
3817 * in TSO mode. Append 4-byte sentinel desc */
3818 if (mss
&& !nr_frags
&& size
== len
&& size
> 8)
3821 buffer_info
->length
= size
;
3822 /* set time_stamp *before* dma to help avoid a possible race */
3823 buffer_info
->time_stamp
= jiffies
;
3825 pci_map_single(adapter
->pdev
,
3829 if (pci_dma_mapping_error(adapter
->pdev
, buffer_info
->dma
)) {
3830 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3831 adapter
->tx_dma_failed
++;
3834 buffer_info
->next_to_watch
= i
;
3840 if (i
== tx_ring
->count
)
3844 for (f
= 0; f
< nr_frags
; f
++) {
3845 struct skb_frag_struct
*frag
;
3847 frag
= &skb_shinfo(skb
)->frags
[f
];
3849 offset
= frag
->page_offset
;
3852 buffer_info
= &tx_ring
->buffer_info
[i
];
3853 size
= min(len
, max_per_txd
);
3854 /* Workaround for premature desc write-backs
3855 * in TSO mode. Append 4-byte sentinel desc */
3856 if (mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8)
3859 buffer_info
->length
= size
;
3860 buffer_info
->time_stamp
= jiffies
;
3862 pci_map_page(adapter
->pdev
,
3867 if (pci_dma_mapping_error(adapter
->pdev
,
3868 buffer_info
->dma
)) {
3869 dev_err(&adapter
->pdev
->dev
,
3870 "TX DMA page map failed\n");
3871 adapter
->tx_dma_failed
++;
3875 buffer_info
->next_to_watch
= i
;
3882 if (i
== tx_ring
->count
)
3888 i
= tx_ring
->count
- 1;
3892 tx_ring
->buffer_info
[i
].skb
= skb
;
3893 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3898 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3899 int tx_flags
, int count
)
3901 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3902 struct e1000_tx_desc
*tx_desc
= NULL
;
3903 struct e1000_buffer
*buffer_info
;
3904 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3907 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3908 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3910 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3912 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3913 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3916 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3917 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3918 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3921 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3922 txd_lower
|= E1000_TXD_CMD_VLE
;
3923 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3926 i
= tx_ring
->next_to_use
;
3929 buffer_info
= &tx_ring
->buffer_info
[i
];
3930 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3931 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3932 tx_desc
->lower
.data
=
3933 cpu_to_le32(txd_lower
| buffer_info
->length
);
3934 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3937 if (i
== tx_ring
->count
)
3941 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3944 * Force memory writes to complete before letting h/w
3945 * know there are new descriptors to fetch. (Only
3946 * applicable for weak-ordered memory model archs,
3951 tx_ring
->next_to_use
= i
;
3952 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3954 * we need this if more than one processor can write to our tail
3955 * at a time, it synchronizes IO on IA64/Altix systems
3960 #define MINIMUM_DHCP_PACKET_SIZE 282
3961 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3962 struct sk_buff
*skb
)
3964 struct e1000_hw
*hw
= &adapter
->hw
;
3967 if (vlan_tx_tag_present(skb
)) {
3968 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3969 && (adapter
->hw
.mng_cookie
.status
&
3970 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3974 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3977 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
3981 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
3984 if (ip
->protocol
!= IPPROTO_UDP
)
3987 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
3988 if (ntohs(udp
->dest
) != 67)
3991 offset
= (u8
*)udp
+ 8 - skb
->data
;
3992 length
= skb
->len
- offset
;
3993 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
3999 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4001 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4003 netif_stop_queue(netdev
);
4005 * Herbert's original patch had:
4006 * smp_mb__after_netif_stop_queue();
4007 * but since that doesn't exist yet, just open code it.
4012 * We need to check again in a case another CPU has just
4013 * made room available.
4015 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4019 netif_start_queue(netdev
);
4020 ++adapter
->restart_queue
;
4024 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4026 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4028 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4030 return __e1000_maybe_stop_tx(netdev
, size
);
4033 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4034 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
4036 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4037 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4039 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4040 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4041 unsigned int tx_flags
= 0;
4042 unsigned int len
= skb
->len
- skb
->data_len
;
4043 unsigned long irq_flags
;
4044 unsigned int nr_frags
;
4050 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4051 dev_kfree_skb_any(skb
);
4052 return NETDEV_TX_OK
;
4055 if (skb
->len
<= 0) {
4056 dev_kfree_skb_any(skb
);
4057 return NETDEV_TX_OK
;
4060 mss
= skb_shinfo(skb
)->gso_size
;
4062 * The controller does a simple calculation to
4063 * make sure there is enough room in the FIFO before
4064 * initiating the DMA for each buffer. The calc is:
4065 * 4 = ceil(buffer len/mss). To make sure we don't
4066 * overrun the FIFO, adjust the max buffer len if mss
4071 max_per_txd
= min(mss
<< 2, max_per_txd
);
4072 max_txd_pwr
= fls(max_per_txd
) - 1;
4075 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4076 * points to just header, pull a few bytes of payload from
4077 * frags into skb->data
4079 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4081 * we do this workaround for ES2LAN, but it is un-necessary,
4082 * avoiding it could save a lot of cycles
4084 if (skb
->data_len
&& (hdr_len
== len
)) {
4085 unsigned int pull_size
;
4087 pull_size
= min((unsigned int)4, skb
->data_len
);
4088 if (!__pskb_pull_tail(skb
, pull_size
)) {
4089 e_err("__pskb_pull_tail failed.\n");
4090 dev_kfree_skb_any(skb
);
4091 return NETDEV_TX_OK
;
4093 len
= skb
->len
- skb
->data_len
;
4097 /* reserve a descriptor for the offload context */
4098 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4102 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4104 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4105 for (f
= 0; f
< nr_frags
; f
++)
4106 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4109 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4110 e1000_transfer_dhcp_info(adapter
, skb
);
4112 if (!spin_trylock_irqsave(&adapter
->tx_queue_lock
, irq_flags
))
4113 /* Collision - tell upper layer to requeue */
4114 return NETDEV_TX_LOCKED
;
4117 * need: count + 2 desc gap to keep tail from touching
4118 * head, otherwise try next time
4120 if (e1000_maybe_stop_tx(netdev
, count
+ 2)) {
4121 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4122 return NETDEV_TX_BUSY
;
4125 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4126 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4127 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4130 first
= tx_ring
->next_to_use
;
4132 tso
= e1000_tso(adapter
, skb
);
4134 dev_kfree_skb_any(skb
);
4135 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4136 return NETDEV_TX_OK
;
4140 tx_flags
|= E1000_TX_FLAGS_TSO
;
4141 else if (e1000_tx_csum(adapter
, skb
))
4142 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4145 * Old method was to assume IPv4 packet by default if TSO was enabled.
4146 * 82571 hardware supports TSO capabilities for IPv6 as well...
4147 * no longer assume, we must.
4149 if (skb
->protocol
== htons(ETH_P_IP
))
4150 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4152 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4154 /* handle pci_map_single() error in e1000_tx_map */
4155 dev_kfree_skb_any(skb
);
4156 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4157 return NETDEV_TX_OK
;
4160 e1000_tx_queue(adapter
, tx_flags
, count
);
4162 netdev
->trans_start
= jiffies
;
4164 /* Make sure there is space in the ring for the next send. */
4165 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4167 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4168 return NETDEV_TX_OK
;
4172 * e1000_tx_timeout - Respond to a Tx Hang
4173 * @netdev: network interface device structure
4175 static void e1000_tx_timeout(struct net_device
*netdev
)
4177 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4179 /* Do the reset outside of interrupt context */
4180 adapter
->tx_timeout_count
++;
4181 schedule_work(&adapter
->reset_task
);
4184 static void e1000_reset_task(struct work_struct
*work
)
4186 struct e1000_adapter
*adapter
;
4187 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4189 e1000e_reinit_locked(adapter
);
4193 * e1000_get_stats - Get System Network Statistics
4194 * @netdev: network interface device structure
4196 * Returns the address of the device statistics structure.
4197 * The statistics are actually updated from the timer callback.
4199 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4201 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4203 /* only return the current stats */
4204 return &adapter
->net_stats
;
4208 * e1000_change_mtu - Change the Maximum Transfer Unit
4209 * @netdev: network interface device structure
4210 * @new_mtu: new value for maximum frame size
4212 * Returns 0 on success, negative on failure
4214 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4216 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4217 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4219 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4220 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
4221 e_err("Invalid MTU setting\n");
4225 /* Jumbo frame size limits */
4226 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
4227 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4228 e_err("Jumbo Frames not supported.\n");
4231 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
4232 e_err("Jumbo Frames not supported.\n");
4237 #define MAX_STD_JUMBO_FRAME_SIZE 9234
4238 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
4239 e_err("MTU > 9216 not supported.\n");
4243 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4245 /* e1000e_down has a dependency on max_frame_size */
4246 adapter
->max_frame_size
= max_frame
;
4247 if (netif_running(netdev
))
4248 e1000e_down(adapter
);
4251 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4252 * means we reserve 2 more, this pushes us to allocate from the next
4254 * i.e. RXBUFFER_2048 --> size-4096 slab
4255 * However with the new *_jumbo_rx* routines, jumbo receives will use
4259 if (max_frame
<= 256)
4260 adapter
->rx_buffer_len
= 256;
4261 else if (max_frame
<= 512)
4262 adapter
->rx_buffer_len
= 512;
4263 else if (max_frame
<= 1024)
4264 adapter
->rx_buffer_len
= 1024;
4265 else if (max_frame
<= 2048)
4266 adapter
->rx_buffer_len
= 2048;
4268 adapter
->rx_buffer_len
= 4096;
4270 /* adjust allocation if LPE protects us, and we aren't using SBP */
4271 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4272 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4273 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4276 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4277 netdev
->mtu
= new_mtu
;
4279 if (netif_running(netdev
))
4282 e1000e_reset(adapter
);
4284 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4289 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4292 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4293 struct mii_ioctl_data
*data
= if_mii(ifr
);
4295 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4300 data
->phy_id
= adapter
->hw
.phy
.addr
;
4303 if (!capable(CAP_NET_ADMIN
))
4305 switch (data
->reg_num
& 0x1F) {
4307 data
->val_out
= adapter
->phy_regs
.bmcr
;
4310 data
->val_out
= adapter
->phy_regs
.bmsr
;
4313 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4316 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4319 data
->val_out
= adapter
->phy_regs
.advertise
;
4322 data
->val_out
= adapter
->phy_regs
.lpa
;
4325 data
->val_out
= adapter
->phy_regs
.expansion
;
4328 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4331 data
->val_out
= adapter
->phy_regs
.stat1000
;
4334 data
->val_out
= adapter
->phy_regs
.estatus
;
4347 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4353 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4359 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4361 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4362 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4363 struct e1000_hw
*hw
= &adapter
->hw
;
4364 u32 ctrl
, ctrl_ext
, rctl
, status
;
4365 u32 wufc
= adapter
->wol
;
4368 netif_device_detach(netdev
);
4370 if (netif_running(netdev
)) {
4371 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4372 e1000e_down(adapter
);
4373 e1000_free_irq(adapter
);
4375 e1000e_reset_interrupt_capability(adapter
);
4377 retval
= pci_save_state(pdev
);
4381 status
= er32(STATUS
);
4382 if (status
& E1000_STATUS_LU
)
4383 wufc
&= ~E1000_WUFC_LNKC
;
4386 e1000_setup_rctl(adapter
);
4387 e1000_set_multi(netdev
);
4389 /* turn on all-multi mode if wake on multicast is enabled */
4390 if (wufc
& E1000_WUFC_MC
) {
4392 rctl
|= E1000_RCTL_MPE
;
4397 /* advertise wake from D3Cold */
4398 #define E1000_CTRL_ADVD3WUC 0x00100000
4399 /* phy power management enable */
4400 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4401 ctrl
|= E1000_CTRL_ADVD3WUC
|
4402 E1000_CTRL_EN_PHY_PWR_MGMT
;
4405 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
4406 adapter
->hw
.phy
.media_type
==
4407 e1000_media_type_internal_serdes
) {
4408 /* keep the laser running in D3 */
4409 ctrl_ext
= er32(CTRL_EXT
);
4410 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4411 ew32(CTRL_EXT
, ctrl_ext
);
4414 if (adapter
->flags
& FLAG_IS_ICH
)
4415 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
4417 /* Allow time for pending master requests to run */
4418 e1000e_disable_pcie_master(&adapter
->hw
);
4420 ew32(WUC
, E1000_WUC_PME_EN
);
4422 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4423 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4427 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4428 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4431 /* make sure adapter isn't asleep if manageability is enabled */
4432 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
) {
4433 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4434 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4437 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
4438 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
4441 * Release control of h/w to f/w. If f/w is AMT enabled, this
4442 * would have already happened in close and is redundant.
4444 e1000_release_hw_control(adapter
);
4446 pci_disable_device(pdev
);
4448 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4453 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
4459 * 82573 workaround - disable L1 ASPM on mobile chipsets
4461 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4462 * resulting in lost data or garbage information on the pci-e link
4463 * level. This could result in (false) bad EEPROM checksum errors,
4464 * long ping times (up to 2s) or even a system freeze/hang.
4466 * Unfortunately this feature saves about 1W power consumption when
4469 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
4470 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
4472 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
4474 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
4479 static int e1000_resume(struct pci_dev
*pdev
)
4481 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4482 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4483 struct e1000_hw
*hw
= &adapter
->hw
;
4486 pci_set_power_state(pdev
, PCI_D0
);
4487 pci_restore_state(pdev
);
4488 e1000e_disable_l1aspm(pdev
);
4490 err
= pci_enable_device_mem(pdev
);
4493 "Cannot enable PCI device from suspend\n");
4497 pci_set_master(pdev
);
4499 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4500 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4502 e1000e_set_interrupt_capability(adapter
);
4503 if (netif_running(netdev
)) {
4504 err
= e1000_request_irq(adapter
);
4509 e1000e_power_up_phy(adapter
);
4510 e1000e_reset(adapter
);
4513 e1000_init_manageability(adapter
);
4515 if (netif_running(netdev
))
4518 netif_device_attach(netdev
);
4521 * If the controller has AMT, do not set DRV_LOAD until the interface
4522 * is up. For all other cases, let the f/w know that the h/w is now
4523 * under the control of the driver.
4525 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4526 e1000_get_hw_control(adapter
);
4532 static void e1000_shutdown(struct pci_dev
*pdev
)
4534 e1000_suspend(pdev
, PMSG_SUSPEND
);
4537 #ifdef CONFIG_NET_POLL_CONTROLLER
4539 * Polling 'interrupt' - used by things like netconsole to send skbs
4540 * without having to re-enable interrupts. It's not called while
4541 * the interrupt routine is executing.
4543 static void e1000_netpoll(struct net_device
*netdev
)
4545 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4547 disable_irq(adapter
->pdev
->irq
);
4548 e1000_intr(adapter
->pdev
->irq
, netdev
);
4550 enable_irq(adapter
->pdev
->irq
);
4555 * e1000_io_error_detected - called when PCI error is detected
4556 * @pdev: Pointer to PCI device
4557 * @state: The current pci connection state
4559 * This function is called after a PCI bus error affecting
4560 * this device has been detected.
4562 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4563 pci_channel_state_t state
)
4565 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4566 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4568 netif_device_detach(netdev
);
4570 if (netif_running(netdev
))
4571 e1000e_down(adapter
);
4572 pci_disable_device(pdev
);
4574 /* Request a slot slot reset. */
4575 return PCI_ERS_RESULT_NEED_RESET
;
4579 * e1000_io_slot_reset - called after the pci bus has been reset.
4580 * @pdev: Pointer to PCI device
4582 * Restart the card from scratch, as if from a cold-boot. Implementation
4583 * resembles the first-half of the e1000_resume routine.
4585 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4587 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4588 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4589 struct e1000_hw
*hw
= &adapter
->hw
;
4592 e1000e_disable_l1aspm(pdev
);
4593 err
= pci_enable_device_mem(pdev
);
4596 "Cannot re-enable PCI device after reset.\n");
4597 return PCI_ERS_RESULT_DISCONNECT
;
4599 pci_set_master(pdev
);
4600 pci_restore_state(pdev
);
4602 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4603 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4605 e1000e_reset(adapter
);
4608 return PCI_ERS_RESULT_RECOVERED
;
4612 * e1000_io_resume - called when traffic can start flowing again.
4613 * @pdev: Pointer to PCI device
4615 * This callback is called when the error recovery driver tells us that
4616 * its OK to resume normal operation. Implementation resembles the
4617 * second-half of the e1000_resume routine.
4619 static void e1000_io_resume(struct pci_dev
*pdev
)
4621 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4622 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4624 e1000_init_manageability(adapter
);
4626 if (netif_running(netdev
)) {
4627 if (e1000e_up(adapter
)) {
4629 "can't bring device back up after reset\n");
4634 netif_device_attach(netdev
);
4637 * If the controller has AMT, do not set DRV_LOAD until the interface
4638 * is up. For all other cases, let the f/w know that the h/w is now
4639 * under the control of the driver.
4641 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4642 e1000_get_hw_control(adapter
);
4646 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4648 struct e1000_hw
*hw
= &adapter
->hw
;
4649 struct net_device
*netdev
= adapter
->netdev
;
4652 /* print bus type/speed/width info */
4653 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4655 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4659 e_info("Intel(R) PRO/%s Network Connection\n",
4660 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4661 e1000e_read_pba_num(hw
, &pba_num
);
4662 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4663 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4666 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4668 struct e1000_hw
*hw
= &adapter
->hw
;
4672 if (hw
->mac
.type
!= e1000_82573
)
4675 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4676 if (!(le16_to_cpu(buf
) & (1 << 0))) {
4677 /* Deep Smart Power Down (DSPD) */
4678 dev_warn(&adapter
->pdev
->dev
,
4679 "Warning: detected DSPD enabled in EEPROM\n");
4682 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4683 if (le16_to_cpu(buf
) & (3 << 2)) {
4685 dev_warn(&adapter
->pdev
->dev
,
4686 "Warning: detected ASPM enabled in EEPROM\n");
4691 * e1000_probe - Device Initialization Routine
4692 * @pdev: PCI device information struct
4693 * @ent: entry in e1000_pci_tbl
4695 * Returns 0 on success, negative on failure
4697 * e1000_probe initializes an adapter identified by a pci_dev structure.
4698 * The OS initialization, configuring of the adapter private structure,
4699 * and a hardware reset occur.
4701 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4702 const struct pci_device_id
*ent
)
4704 struct net_device
*netdev
;
4705 struct e1000_adapter
*adapter
;
4706 struct e1000_hw
*hw
;
4707 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4708 resource_size_t mmio_start
, mmio_len
;
4709 resource_size_t flash_start
, flash_len
;
4711 static int cards_found
;
4712 int i
, err
, pci_using_dac
;
4713 u16 eeprom_data
= 0;
4714 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4716 e1000e_disable_l1aspm(pdev
);
4718 err
= pci_enable_device_mem(pdev
);
4723 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
4725 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
4729 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
4731 err
= pci_set_consistent_dma_mask(pdev
,
4734 dev_err(&pdev
->dev
, "No usable DMA "
4735 "configuration, aborting\n");
4741 err
= pci_request_selected_regions(pdev
,
4742 pci_select_bars(pdev
, IORESOURCE_MEM
),
4743 e1000e_driver_name
);
4747 pci_set_master(pdev
);
4748 pci_save_state(pdev
);
4751 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4753 goto err_alloc_etherdev
;
4755 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4757 pci_set_drvdata(pdev
, netdev
);
4758 adapter
= netdev_priv(netdev
);
4760 adapter
->netdev
= netdev
;
4761 adapter
->pdev
= pdev
;
4763 adapter
->pba
= ei
->pba
;
4764 adapter
->flags
= ei
->flags
;
4765 adapter
->hw
.adapter
= adapter
;
4766 adapter
->hw
.mac
.type
= ei
->mac
;
4767 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4769 mmio_start
= pci_resource_start(pdev
, 0);
4770 mmio_len
= pci_resource_len(pdev
, 0);
4773 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4774 if (!adapter
->hw
.hw_addr
)
4777 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4778 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4779 flash_start
= pci_resource_start(pdev
, 1);
4780 flash_len
= pci_resource_len(pdev
, 1);
4781 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4782 if (!adapter
->hw
.flash_address
)
4786 /* construct the net_device struct */
4787 netdev
->open
= &e1000_open
;
4788 netdev
->stop
= &e1000_close
;
4789 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
4790 netdev
->get_stats
= &e1000_get_stats
;
4791 netdev
->set_multicast_list
= &e1000_set_multi
;
4792 netdev
->set_mac_address
= &e1000_set_mac
;
4793 netdev
->change_mtu
= &e1000_change_mtu
;
4794 netdev
->do_ioctl
= &e1000_ioctl
;
4795 e1000e_set_ethtool_ops(netdev
);
4796 netdev
->tx_timeout
= &e1000_tx_timeout
;
4797 netdev
->watchdog_timeo
= 5 * HZ
;
4798 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4799 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
4800 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
4801 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
4802 #ifdef CONFIG_NET_POLL_CONTROLLER
4803 netdev
->poll_controller
= e1000_netpoll
;
4805 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4807 netdev
->mem_start
= mmio_start
;
4808 netdev
->mem_end
= mmio_start
+ mmio_len
;
4810 adapter
->bd_number
= cards_found
++;
4812 e1000e_check_options(adapter
);
4814 /* setup adapter struct */
4815 err
= e1000_sw_init(adapter
);
4821 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4822 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4823 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4825 err
= ei
->get_variants(adapter
);
4829 if ((adapter
->flags
& FLAG_IS_ICH
) &&
4830 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
4831 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
4833 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4835 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4837 /* Copper options */
4838 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4839 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4840 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4841 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4844 if (e1000_check_reset_block(&adapter
->hw
))
4845 e_info("PHY reset is blocked due to SOL/IDER session.\n");
4847 netdev
->features
= NETIF_F_SG
|
4849 NETIF_F_HW_VLAN_TX
|
4852 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4853 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4855 netdev
->features
|= NETIF_F_TSO
;
4856 netdev
->features
|= NETIF_F_TSO6
;
4858 netdev
->vlan_features
|= NETIF_F_TSO
;
4859 netdev
->vlan_features
|= NETIF_F_TSO6
;
4860 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4861 netdev
->vlan_features
|= NETIF_F_SG
;
4864 netdev
->features
|= NETIF_F_HIGHDMA
;
4867 * We should not be using LLTX anymore, but we are still Tx faster with
4870 netdev
->features
|= NETIF_F_LLTX
;
4872 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4873 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4876 * before reading the NVM, reset the controller to
4877 * put the device in a known good starting state
4879 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4882 * systems with ASPM and others may see the checksum fail on the first
4883 * attempt. Let's give it a few tries
4886 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4889 e_err("The NVM Checksum Is Not Valid\n");
4895 e1000_eeprom_checks(adapter
);
4897 /* copy the MAC address out of the NVM */
4898 if (e1000e_read_mac_addr(&adapter
->hw
))
4899 e_err("NVM Read Error while reading MAC address\n");
4901 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4902 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4904 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4905 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
4910 init_timer(&adapter
->watchdog_timer
);
4911 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4912 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4914 init_timer(&adapter
->phy_info_timer
);
4915 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4916 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4918 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4919 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4920 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
4921 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
4923 /* Initialize link parameters. User can change them with ethtool */
4924 adapter
->hw
.mac
.autoneg
= 1;
4925 adapter
->fc_autoneg
= 1;
4926 adapter
->hw
.fc
.original_type
= e1000_fc_default
;
4927 adapter
->hw
.fc
.type
= e1000_fc_default
;
4928 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4930 /* ring size defaults */
4931 adapter
->rx_ring
->count
= 256;
4932 adapter
->tx_ring
->count
= 256;
4935 * Initial Wake on LAN setting - If APM wake is enabled in
4936 * the EEPROM, enable the ACPI Magic Packet filter
4938 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4939 /* APME bit in EEPROM is mapped to WUC.APME */
4940 eeprom_data
= er32(WUC
);
4941 eeprom_apme_mask
= E1000_WUC_APME
;
4942 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
4943 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
4944 (adapter
->hw
.bus
.func
== 1))
4945 e1000_read_nvm(&adapter
->hw
,
4946 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
4948 e1000_read_nvm(&adapter
->hw
,
4949 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
4952 /* fetch WoL from EEPROM */
4953 if (eeprom_data
& eeprom_apme_mask
)
4954 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
4957 * now that we have the eeprom settings, apply the special cases
4958 * where the eeprom may be wrong or the board simply won't support
4959 * wake on lan on a particular port
4961 if (!(adapter
->flags
& FLAG_HAS_WOL
))
4962 adapter
->eeprom_wol
= 0;
4964 /* initialize the wol settings based on the eeprom settings */
4965 adapter
->wol
= adapter
->eeprom_wol
;
4967 /* reset the hardware with the new settings */
4968 e1000e_reset(adapter
);
4971 * If the controller has AMT, do not set DRV_LOAD until the interface
4972 * is up. For all other cases, let the f/w know that the h/w is now
4973 * under the control of the driver.
4975 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4976 e1000_get_hw_control(adapter
);
4978 /* tell the stack to leave us alone until e1000_open() is called */
4979 netif_carrier_off(netdev
);
4980 netif_tx_stop_all_queues(netdev
);
4982 strcpy(netdev
->name
, "eth%d");
4983 err
= register_netdev(netdev
);
4987 e1000_print_device_info(adapter
);
4992 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4993 e1000_release_hw_control(adapter
);
4995 if (!e1000_check_reset_block(&adapter
->hw
))
4996 e1000_phy_hw_reset(&adapter
->hw
);
4999 kfree(adapter
->tx_ring
);
5000 kfree(adapter
->rx_ring
);
5002 if (adapter
->hw
.flash_address
)
5003 iounmap(adapter
->hw
.flash_address
);
5005 iounmap(adapter
->hw
.hw_addr
);
5007 free_netdev(netdev
);
5009 pci_release_selected_regions(pdev
,
5010 pci_select_bars(pdev
, IORESOURCE_MEM
));
5013 pci_disable_device(pdev
);
5018 * e1000_remove - Device Removal Routine
5019 * @pdev: PCI device information struct
5021 * e1000_remove is called by the PCI subsystem to alert the driver
5022 * that it should release a PCI device. The could be caused by a
5023 * Hot-Plug event, or because the driver is going to be removed from
5026 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5028 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5029 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5032 * flush_scheduled work may reschedule our watchdog task, so
5033 * explicitly disable watchdog tasks from being rescheduled
5035 set_bit(__E1000_DOWN
, &adapter
->state
);
5036 del_timer_sync(&adapter
->watchdog_timer
);
5037 del_timer_sync(&adapter
->phy_info_timer
);
5039 flush_scheduled_work();
5042 * Release control of h/w to f/w. If f/w is AMT enabled, this
5043 * would have already happened in close and is redundant.
5045 e1000_release_hw_control(adapter
);
5047 unregister_netdev(netdev
);
5049 if (!e1000_check_reset_block(&adapter
->hw
))
5050 e1000_phy_hw_reset(&adapter
->hw
);
5052 e1000e_reset_interrupt_capability(adapter
);
5053 kfree(adapter
->tx_ring
);
5054 kfree(adapter
->rx_ring
);
5056 iounmap(adapter
->hw
.hw_addr
);
5057 if (adapter
->hw
.flash_address
)
5058 iounmap(adapter
->hw
.flash_address
);
5059 pci_release_selected_regions(pdev
,
5060 pci_select_bars(pdev
, IORESOURCE_MEM
));
5062 free_netdev(netdev
);
5064 pci_disable_device(pdev
);
5067 /* PCI Error Recovery (ERS) */
5068 static struct pci_error_handlers e1000_err_handler
= {
5069 .error_detected
= e1000_io_error_detected
,
5070 .slot_reset
= e1000_io_slot_reset
,
5071 .resume
= e1000_io_resume
,
5074 static struct pci_device_id e1000_pci_tbl
[] = {
5075 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5076 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5077 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5078 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5079 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5080 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5081 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5082 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5083 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5085 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5086 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5087 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5088 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5090 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5091 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5092 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5094 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5096 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5097 board_80003es2lan
},
5098 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5099 board_80003es2lan
},
5100 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5101 board_80003es2lan
},
5102 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5103 board_80003es2lan
},
5105 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5106 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5107 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5108 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5109 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5110 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5111 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5113 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5114 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5115 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5116 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5117 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5118 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5119 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5120 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5121 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5123 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5124 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5125 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5127 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5128 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5130 { } /* terminate list */
5132 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
5134 /* PCI Device API Driver */
5135 static struct pci_driver e1000_driver
= {
5136 .name
= e1000e_driver_name
,
5137 .id_table
= e1000_pci_tbl
,
5138 .probe
= e1000_probe
,
5139 .remove
= __devexit_p(e1000_remove
),
5141 /* Power Management Hooks */
5142 .suspend
= e1000_suspend
,
5143 .resume
= e1000_resume
,
5145 .shutdown
= e1000_shutdown
,
5146 .err_handler
= &e1000_err_handler
5150 * e1000_init_module - Driver Registration Routine
5152 * e1000_init_module is the first routine called when the driver is
5153 * loaded. All it does is register with the PCI subsystem.
5155 static int __init
e1000_init_module(void)
5158 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
5159 e1000e_driver_name
, e1000e_driver_version
);
5160 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
5161 e1000e_driver_name
);
5162 ret
= pci_register_driver(&e1000_driver
);
5163 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
5164 PM_QOS_DEFAULT_VALUE
);
5168 module_init(e1000_init_module
);
5171 * e1000_exit_module - Driver Exit Cleanup Routine
5173 * e1000_exit_module is called just before the driver is removed
5176 static void __exit
e1000_exit_module(void)
5178 pci_unregister_driver(&e1000_driver
);
5179 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
5181 module_exit(e1000_exit_module
);
5184 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5185 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5186 MODULE_LICENSE("GPL");
5187 MODULE_VERSION(DRV_VERSION
);