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
);
107 netdev
->last_rx
= jiffies
;
111 * e1000_rx_checksum - Receive Checksum Offload for 82543
112 * @adapter: board private structure
113 * @status_err: receive descriptor status and error fields
114 * @csum: receive descriptor csum field
115 * @sk_buff: socket buffer with received data
117 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
118 u32 csum
, struct sk_buff
*skb
)
120 u16 status
= (u16
)status_err
;
121 u8 errors
= (u8
)(status_err
>> 24);
122 skb
->ip_summed
= CHECKSUM_NONE
;
124 /* Ignore Checksum bit is set */
125 if (status
& E1000_RXD_STAT_IXSM
)
127 /* TCP/UDP checksum error bit is set */
128 if (errors
& E1000_RXD_ERR_TCPE
) {
129 /* let the stack verify checksum errors */
130 adapter
->hw_csum_err
++;
134 /* TCP/UDP Checksum has not been calculated */
135 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
138 /* It must be a TCP or UDP packet with a valid checksum */
139 if (status
& E1000_RXD_STAT_TCPCS
) {
140 /* TCP checksum is good */
141 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
144 * IP fragment with UDP payload
145 * Hardware complements the payload checksum, so we undo it
146 * and then put the value in host order for further stack use.
148 __sum16 sum
= (__force __sum16
)htons(csum
);
149 skb
->csum
= csum_unfold(~sum
);
150 skb
->ip_summed
= CHECKSUM_COMPLETE
;
152 adapter
->hw_csum_good
++;
156 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
157 * @adapter: address of board private structure
159 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
162 struct net_device
*netdev
= adapter
->netdev
;
163 struct pci_dev
*pdev
= adapter
->pdev
;
164 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
165 struct e1000_rx_desc
*rx_desc
;
166 struct e1000_buffer
*buffer_info
;
169 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
171 i
= rx_ring
->next_to_use
;
172 buffer_info
= &rx_ring
->buffer_info
[i
];
174 while (cleaned_count
--) {
175 skb
= buffer_info
->skb
;
181 skb
= netdev_alloc_skb(netdev
, bufsz
);
183 /* Better luck next round */
184 adapter
->alloc_rx_buff_failed
++;
189 * Make buffer alignment 2 beyond a 16 byte boundary
190 * this will result in a 16 byte aligned IP header after
191 * the 14 byte MAC header is removed
193 skb_reserve(skb
, NET_IP_ALIGN
);
195 buffer_info
->skb
= skb
;
197 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
198 adapter
->rx_buffer_len
,
200 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
201 dev_err(&pdev
->dev
, "RX DMA map failed\n");
202 adapter
->rx_dma_failed
++;
206 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
207 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
210 if (i
== rx_ring
->count
)
212 buffer_info
= &rx_ring
->buffer_info
[i
];
215 if (rx_ring
->next_to_use
!= i
) {
216 rx_ring
->next_to_use
= i
;
218 i
= (rx_ring
->count
- 1);
221 * Force memory writes to complete before letting h/w
222 * know there are new descriptors to fetch. (Only
223 * applicable for weak-ordered memory model archs,
227 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
232 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
233 * @adapter: address of board private structure
235 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
238 struct net_device
*netdev
= adapter
->netdev
;
239 struct pci_dev
*pdev
= adapter
->pdev
;
240 union e1000_rx_desc_packet_split
*rx_desc
;
241 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
242 struct e1000_buffer
*buffer_info
;
243 struct e1000_ps_page
*ps_page
;
247 i
= rx_ring
->next_to_use
;
248 buffer_info
= &rx_ring
->buffer_info
[i
];
250 while (cleaned_count
--) {
251 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
253 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
254 ps_page
= &buffer_info
->ps_pages
[j
];
255 if (j
>= adapter
->rx_ps_pages
) {
256 /* all unused desc entries get hw null ptr */
257 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
260 if (!ps_page
->page
) {
261 ps_page
->page
= alloc_page(GFP_ATOMIC
);
262 if (!ps_page
->page
) {
263 adapter
->alloc_rx_buff_failed
++;
266 ps_page
->dma
= pci_map_page(pdev
,
270 if (pci_dma_mapping_error(pdev
, ps_page
->dma
)) {
271 dev_err(&adapter
->pdev
->dev
,
272 "RX DMA page map failed\n");
273 adapter
->rx_dma_failed
++;
278 * Refresh the desc even if buffer_addrs
279 * didn't change because each write-back
282 rx_desc
->read
.buffer_addr
[j
+1] =
283 cpu_to_le64(ps_page
->dma
);
286 skb
= netdev_alloc_skb(netdev
,
287 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
290 adapter
->alloc_rx_buff_failed
++;
295 * Make buffer alignment 2 beyond a 16 byte boundary
296 * this will result in a 16 byte aligned IP header after
297 * the 14 byte MAC header is removed
299 skb_reserve(skb
, NET_IP_ALIGN
);
301 buffer_info
->skb
= skb
;
302 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
303 adapter
->rx_ps_bsize0
,
305 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
306 dev_err(&pdev
->dev
, "RX DMA map failed\n");
307 adapter
->rx_dma_failed
++;
309 dev_kfree_skb_any(skb
);
310 buffer_info
->skb
= NULL
;
314 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
317 if (i
== rx_ring
->count
)
319 buffer_info
= &rx_ring
->buffer_info
[i
];
323 if (rx_ring
->next_to_use
!= i
) {
324 rx_ring
->next_to_use
= i
;
327 i
= (rx_ring
->count
- 1);
330 * Force memory writes to complete before letting h/w
331 * know there are new descriptors to fetch. (Only
332 * applicable for weak-ordered memory model archs,
337 * Hardware increments by 16 bytes, but packet split
338 * descriptors are 32 bytes...so we increment tail
341 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
346 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
347 * @adapter: address of board private structure
348 * @rx_ring: pointer to receive ring structure
349 * @cleaned_count: number of buffers to allocate this pass
352 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
355 struct net_device
*netdev
= adapter
->netdev
;
356 struct pci_dev
*pdev
= adapter
->pdev
;
357 struct e1000_rx_desc
*rx_desc
;
358 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
359 struct e1000_buffer
*buffer_info
;
362 unsigned int bufsz
= 256 -
363 16 /* for skb_reserve */ -
366 i
= rx_ring
->next_to_use
;
367 buffer_info
= &rx_ring
->buffer_info
[i
];
369 while (cleaned_count
--) {
370 skb
= buffer_info
->skb
;
376 skb
= netdev_alloc_skb(netdev
, bufsz
);
377 if (unlikely(!skb
)) {
378 /* Better luck next round */
379 adapter
->alloc_rx_buff_failed
++;
383 /* Make buffer alignment 2 beyond a 16 byte boundary
384 * this will result in a 16 byte aligned IP header after
385 * the 14 byte MAC header is removed
387 skb_reserve(skb
, NET_IP_ALIGN
);
389 buffer_info
->skb
= skb
;
391 /* allocate a new page if necessary */
392 if (!buffer_info
->page
) {
393 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
394 if (unlikely(!buffer_info
->page
)) {
395 adapter
->alloc_rx_buff_failed
++;
400 if (!buffer_info
->dma
)
401 buffer_info
->dma
= pci_map_page(pdev
,
402 buffer_info
->page
, 0,
406 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
407 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
409 if (unlikely(++i
== rx_ring
->count
))
411 buffer_info
= &rx_ring
->buffer_info
[i
];
414 if (likely(rx_ring
->next_to_use
!= i
)) {
415 rx_ring
->next_to_use
= i
;
416 if (unlikely(i
-- == 0))
417 i
= (rx_ring
->count
- 1);
419 /* Force memory writes to complete before letting h/w
420 * know there are new descriptors to fetch. (Only
421 * applicable for weak-ordered memory model archs,
424 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
429 * e1000_clean_rx_irq - Send received data up the network stack; legacy
430 * @adapter: board private structure
432 * the return value indicates whether actual cleaning was done, there
433 * is no guarantee that everything was cleaned
435 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
436 int *work_done
, int work_to_do
)
438 struct net_device
*netdev
= adapter
->netdev
;
439 struct pci_dev
*pdev
= adapter
->pdev
;
440 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
441 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
442 struct e1000_buffer
*buffer_info
, *next_buffer
;
445 int cleaned_count
= 0;
447 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
449 i
= rx_ring
->next_to_clean
;
450 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
451 buffer_info
= &rx_ring
->buffer_info
[i
];
453 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
457 if (*work_done
>= work_to_do
)
461 status
= rx_desc
->status
;
462 skb
= buffer_info
->skb
;
463 buffer_info
->skb
= NULL
;
465 prefetch(skb
->data
- NET_IP_ALIGN
);
468 if (i
== rx_ring
->count
)
470 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
473 next_buffer
= &rx_ring
->buffer_info
[i
];
477 pci_unmap_single(pdev
,
479 adapter
->rx_buffer_len
,
481 buffer_info
->dma
= 0;
483 length
= le16_to_cpu(rx_desc
->length
);
485 /* !EOP means multiple descriptors were used to store a single
486 * packet, also make sure the frame isn't just CRC only */
487 if (!(status
& E1000_RXD_STAT_EOP
) || (length
<= 4)) {
488 /* All receives must fit into a single buffer */
489 e_dbg("%s: Receive packet consumed multiple buffers\n",
492 buffer_info
->skb
= skb
;
496 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
498 buffer_info
->skb
= skb
;
502 /* adjust length to remove Ethernet CRC */
503 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
506 total_rx_bytes
+= length
;
510 * code added for copybreak, this should improve
511 * performance for small packets with large amounts
512 * of reassembly being done in the stack
514 if (length
< copybreak
) {
515 struct sk_buff
*new_skb
=
516 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
518 skb_reserve(new_skb
, NET_IP_ALIGN
);
519 skb_copy_to_linear_data_offset(new_skb
,
525 /* save the skb in buffer_info as good */
526 buffer_info
->skb
= skb
;
529 /* else just continue with the old one */
531 /* end copybreak code */
532 skb_put(skb
, length
);
534 /* Receive Checksum Offload */
535 e1000_rx_checksum(adapter
,
537 ((u32
)(rx_desc
->errors
) << 24),
538 le16_to_cpu(rx_desc
->csum
), skb
);
540 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
545 /* return some buffers to hardware, one at a time is too slow */
546 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
547 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
551 /* use prefetched values */
553 buffer_info
= next_buffer
;
555 rx_ring
->next_to_clean
= i
;
557 cleaned_count
= e1000_desc_unused(rx_ring
);
559 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
561 adapter
->total_rx_bytes
+= total_rx_bytes
;
562 adapter
->total_rx_packets
+= total_rx_packets
;
563 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
564 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
568 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
569 struct e1000_buffer
*buffer_info
)
571 if (buffer_info
->dma
) {
572 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
573 buffer_info
->length
, PCI_DMA_TODEVICE
);
574 buffer_info
->dma
= 0;
576 if (buffer_info
->skb
) {
577 dev_kfree_skb_any(buffer_info
->skb
);
578 buffer_info
->skb
= NULL
;
582 static void e1000_print_tx_hang(struct e1000_adapter
*adapter
)
584 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
585 unsigned int i
= tx_ring
->next_to_clean
;
586 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
587 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
589 /* detected Tx unit hang */
590 e_err("Detected Tx Unit Hang:\n"
593 " next_to_use <%x>\n"
594 " next_to_clean <%x>\n"
595 "buffer_info[next_to_clean]:\n"
596 " time_stamp <%lx>\n"
597 " next_to_watch <%x>\n"
599 " next_to_watch.status <%x>\n",
600 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
601 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
602 tx_ring
->next_to_use
,
603 tx_ring
->next_to_clean
,
604 tx_ring
->buffer_info
[eop
].time_stamp
,
607 eop_desc
->upper
.fields
.status
);
611 * e1000_clean_tx_irq - Reclaim resources after transmit completes
612 * @adapter: board private structure
614 * the return value indicates whether actual cleaning was done, there
615 * is no guarantee that everything was cleaned
617 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
619 struct net_device
*netdev
= adapter
->netdev
;
620 struct e1000_hw
*hw
= &adapter
->hw
;
621 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
622 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
623 struct e1000_buffer
*buffer_info
;
625 unsigned int count
= 0;
627 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
629 i
= tx_ring
->next_to_clean
;
630 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
631 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
633 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
634 for (cleaned
= 0; !cleaned
; ) {
635 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
636 buffer_info
= &tx_ring
->buffer_info
[i
];
637 cleaned
= (i
== eop
);
640 struct sk_buff
*skb
= buffer_info
->skb
;
641 unsigned int segs
, bytecount
;
642 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
643 /* multiply data chunks by size of headers */
644 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
646 total_tx_packets
+= segs
;
647 total_tx_bytes
+= bytecount
;
650 e1000_put_txbuf(adapter
, buffer_info
);
651 tx_desc
->upper
.data
= 0;
654 if (i
== tx_ring
->count
)
658 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
659 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
660 #define E1000_TX_WEIGHT 64
661 /* weight of a sort for tx, to avoid endless transmit cleanup */
662 if (count
++ == E1000_TX_WEIGHT
)
666 tx_ring
->next_to_clean
= i
;
668 #define TX_WAKE_THRESHOLD 32
669 if (cleaned
&& netif_carrier_ok(netdev
) &&
670 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
671 /* Make sure that anybody stopping the queue after this
672 * sees the new next_to_clean.
676 if (netif_queue_stopped(netdev
) &&
677 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
678 netif_wake_queue(netdev
);
679 ++adapter
->restart_queue
;
683 if (adapter
->detect_tx_hung
) {
685 * Detect a transmit hang in hardware, this serializes the
686 * check with the clearing of time_stamp and movement of i
688 adapter
->detect_tx_hung
= 0;
689 if (tx_ring
->buffer_info
[eop
].dma
&&
690 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
691 + (adapter
->tx_timeout_factor
* HZ
))
692 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
693 e1000_print_tx_hang(adapter
);
694 netif_stop_queue(netdev
);
697 adapter
->total_tx_bytes
+= total_tx_bytes
;
698 adapter
->total_tx_packets
+= total_tx_packets
;
699 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
700 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
705 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
706 * @adapter: board private structure
708 * the return value indicates whether actual cleaning was done, there
709 * is no guarantee that everything was cleaned
711 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
712 int *work_done
, int work_to_do
)
714 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
715 struct net_device
*netdev
= adapter
->netdev
;
716 struct pci_dev
*pdev
= adapter
->pdev
;
717 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
718 struct e1000_buffer
*buffer_info
, *next_buffer
;
719 struct e1000_ps_page
*ps_page
;
723 int cleaned_count
= 0;
725 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
727 i
= rx_ring
->next_to_clean
;
728 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
729 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
730 buffer_info
= &rx_ring
->buffer_info
[i
];
732 while (staterr
& E1000_RXD_STAT_DD
) {
733 if (*work_done
>= work_to_do
)
736 skb
= buffer_info
->skb
;
738 /* in the packet split case this is header only */
739 prefetch(skb
->data
- NET_IP_ALIGN
);
742 if (i
== rx_ring
->count
)
744 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
747 next_buffer
= &rx_ring
->buffer_info
[i
];
751 pci_unmap_single(pdev
, buffer_info
->dma
,
752 adapter
->rx_ps_bsize0
,
754 buffer_info
->dma
= 0;
756 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
757 e_dbg("%s: Packet Split buffers didn't pick up the "
758 "full packet\n", netdev
->name
);
759 dev_kfree_skb_irq(skb
);
763 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
764 dev_kfree_skb_irq(skb
);
768 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
771 e_dbg("%s: Last part of the packet spanning multiple "
772 "descriptors\n", netdev
->name
);
773 dev_kfree_skb_irq(skb
);
778 skb_put(skb
, length
);
782 * this looks ugly, but it seems compiler issues make it
783 * more efficient than reusing j
785 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
788 * page alloc/put takes too long and effects small packet
789 * throughput, so unsplit small packets and save the alloc/put
790 * only valid in softirq (napi) context to call kmap_*
792 if (l1
&& (l1
<= copybreak
) &&
793 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
796 ps_page
= &buffer_info
->ps_pages
[0];
799 * there is no documentation about how to call
800 * kmap_atomic, so we can't hold the mapping
803 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
804 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
805 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
806 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
807 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
808 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
809 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
812 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
820 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
821 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
825 ps_page
= &buffer_info
->ps_pages
[j
];
826 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
829 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
830 ps_page
->page
= NULL
;
832 skb
->data_len
+= length
;
833 skb
->truesize
+= length
;
836 /* strip the ethernet crc, problem is we're using pages now so
837 * this whole operation can get a little cpu intensive
839 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
840 pskb_trim(skb
, skb
->len
- 4);
843 total_rx_bytes
+= skb
->len
;
846 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
847 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
849 if (rx_desc
->wb
.upper
.header_status
&
850 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
851 adapter
->rx_hdr_split
++;
853 e1000_receive_skb(adapter
, netdev
, skb
,
854 staterr
, rx_desc
->wb
.middle
.vlan
);
857 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
858 buffer_info
->skb
= NULL
;
860 /* return some buffers to hardware, one at a time is too slow */
861 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
862 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
866 /* use prefetched values */
868 buffer_info
= next_buffer
;
870 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
872 rx_ring
->next_to_clean
= i
;
874 cleaned_count
= e1000_desc_unused(rx_ring
);
876 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
878 adapter
->total_rx_bytes
+= total_rx_bytes
;
879 adapter
->total_rx_packets
+= total_rx_packets
;
880 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
881 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
886 * e1000_consume_page - helper function
888 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
893 skb
->data_len
+= length
;
894 skb
->truesize
+= length
;
898 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
899 * @adapter: board private structure
901 * the return value indicates whether actual cleaning was done, there
902 * is no guarantee that everything was cleaned
905 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
906 int *work_done
, int work_to_do
)
908 struct net_device
*netdev
= adapter
->netdev
;
909 struct pci_dev
*pdev
= adapter
->pdev
;
910 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
911 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
912 struct e1000_buffer
*buffer_info
, *next_buffer
;
915 int cleaned_count
= 0;
916 bool cleaned
= false;
917 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
919 i
= rx_ring
->next_to_clean
;
920 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
921 buffer_info
= &rx_ring
->buffer_info
[i
];
923 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
927 if (*work_done
>= work_to_do
)
931 status
= rx_desc
->status
;
932 skb
= buffer_info
->skb
;
933 buffer_info
->skb
= NULL
;
936 if (i
== rx_ring
->count
)
938 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
941 next_buffer
= &rx_ring
->buffer_info
[i
];
945 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
947 buffer_info
->dma
= 0;
949 length
= le16_to_cpu(rx_desc
->length
);
951 /* errors is only valid for DD + EOP descriptors */
952 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
953 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
954 /* recycle both page and skb */
955 buffer_info
->skb
= skb
;
956 /* an error means any chain goes out the window
958 if (rx_ring
->rx_skb_top
)
959 dev_kfree_skb(rx_ring
->rx_skb_top
);
960 rx_ring
->rx_skb_top
= NULL
;
964 #define rxtop rx_ring->rx_skb_top
965 if (!(status
& E1000_RXD_STAT_EOP
)) {
966 /* this descriptor is only the beginning (or middle) */
968 /* this is the beginning of a chain */
970 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
973 /* this is the middle of a chain */
974 skb_fill_page_desc(rxtop
,
975 skb_shinfo(rxtop
)->nr_frags
,
976 buffer_info
->page
, 0, length
);
977 /* re-use the skb, only consumed the page */
978 buffer_info
->skb
= skb
;
980 e1000_consume_page(buffer_info
, rxtop
, length
);
984 /* end of the chain */
985 skb_fill_page_desc(rxtop
,
986 skb_shinfo(rxtop
)->nr_frags
,
987 buffer_info
->page
, 0, length
);
988 /* re-use the current skb, we only consumed the
990 buffer_info
->skb
= skb
;
993 e1000_consume_page(buffer_info
, skb
, length
);
995 /* no chain, got EOP, this buf is the packet
996 * copybreak to save the put_page/alloc_page */
997 if (length
<= copybreak
&&
998 skb_tailroom(skb
) >= length
) {
1000 vaddr
= kmap_atomic(buffer_info
->page
,
1001 KM_SKB_DATA_SOFTIRQ
);
1002 memcpy(skb_tail_pointer(skb
), vaddr
,
1004 kunmap_atomic(vaddr
,
1005 KM_SKB_DATA_SOFTIRQ
);
1006 /* re-use the page, so don't erase
1007 * buffer_info->page */
1008 skb_put(skb
, length
);
1010 skb_fill_page_desc(skb
, 0,
1011 buffer_info
->page
, 0,
1013 e1000_consume_page(buffer_info
, skb
,
1019 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1020 e1000_rx_checksum(adapter
,
1022 ((u32
)(rx_desc
->errors
) << 24),
1023 le16_to_cpu(rx_desc
->csum
), skb
);
1025 /* probably a little skewed due to removing CRC */
1026 total_rx_bytes
+= skb
->len
;
1029 /* eth type trans needs skb->data to point to something */
1030 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1031 e_err("pskb_may_pull failed.\n");
1036 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1040 rx_desc
->status
= 0;
1042 /* return some buffers to hardware, one at a time is too slow */
1043 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1044 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1048 /* use prefetched values */
1050 buffer_info
= next_buffer
;
1052 rx_ring
->next_to_clean
= i
;
1054 cleaned_count
= e1000_desc_unused(rx_ring
);
1056 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1058 adapter
->total_rx_bytes
+= total_rx_bytes
;
1059 adapter
->total_rx_packets
+= total_rx_packets
;
1060 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1061 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1066 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1067 * @adapter: board private structure
1069 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1071 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1072 struct e1000_buffer
*buffer_info
;
1073 struct e1000_ps_page
*ps_page
;
1074 struct pci_dev
*pdev
= adapter
->pdev
;
1077 /* Free all the Rx ring sk_buffs */
1078 for (i
= 0; i
< rx_ring
->count
; i
++) {
1079 buffer_info
= &rx_ring
->buffer_info
[i
];
1080 if (buffer_info
->dma
) {
1081 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1082 pci_unmap_single(pdev
, buffer_info
->dma
,
1083 adapter
->rx_buffer_len
,
1084 PCI_DMA_FROMDEVICE
);
1085 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1086 pci_unmap_page(pdev
, buffer_info
->dma
,
1088 PCI_DMA_FROMDEVICE
);
1089 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1090 pci_unmap_single(pdev
, buffer_info
->dma
,
1091 adapter
->rx_ps_bsize0
,
1092 PCI_DMA_FROMDEVICE
);
1093 buffer_info
->dma
= 0;
1096 if (buffer_info
->page
) {
1097 put_page(buffer_info
->page
);
1098 buffer_info
->page
= NULL
;
1101 if (buffer_info
->skb
) {
1102 dev_kfree_skb(buffer_info
->skb
);
1103 buffer_info
->skb
= NULL
;
1106 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1107 ps_page
= &buffer_info
->ps_pages
[j
];
1110 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1111 PCI_DMA_FROMDEVICE
);
1113 put_page(ps_page
->page
);
1114 ps_page
->page
= NULL
;
1118 /* there also may be some cached data from a chained receive */
1119 if (rx_ring
->rx_skb_top
) {
1120 dev_kfree_skb(rx_ring
->rx_skb_top
);
1121 rx_ring
->rx_skb_top
= NULL
;
1124 /* Zero out the descriptor ring */
1125 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1127 rx_ring
->next_to_clean
= 0;
1128 rx_ring
->next_to_use
= 0;
1130 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1131 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1134 static void e1000e_downshift_workaround(struct work_struct
*work
)
1136 struct e1000_adapter
*adapter
= container_of(work
,
1137 struct e1000_adapter
, downshift_task
);
1139 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1143 * e1000_intr_msi - Interrupt Handler
1144 * @irq: interrupt number
1145 * @data: pointer to a network interface device structure
1147 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1149 struct net_device
*netdev
= data
;
1150 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1151 struct e1000_hw
*hw
= &adapter
->hw
;
1152 u32 icr
= er32(ICR
);
1155 * read ICR disables interrupts using IAM
1158 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1159 hw
->mac
.get_link_status
= 1;
1161 * ICH8 workaround-- Call gig speed drop workaround on cable
1162 * disconnect (LSC) before accessing any PHY registers
1164 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1165 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1166 schedule_work(&adapter
->downshift_task
);
1169 * 80003ES2LAN workaround-- For packet buffer work-around on
1170 * link down event; disable receives here in the ISR and reset
1171 * adapter in watchdog
1173 if (netif_carrier_ok(netdev
) &&
1174 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1175 /* disable receives */
1176 u32 rctl
= er32(RCTL
);
1177 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1178 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1180 /* guard against interrupt when we're going down */
1181 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1182 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1185 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1186 adapter
->total_tx_bytes
= 0;
1187 adapter
->total_tx_packets
= 0;
1188 adapter
->total_rx_bytes
= 0;
1189 adapter
->total_rx_packets
= 0;
1190 __netif_rx_schedule(netdev
, &adapter
->napi
);
1197 * e1000_intr - Interrupt Handler
1198 * @irq: interrupt number
1199 * @data: pointer to a network interface device structure
1201 static irqreturn_t
e1000_intr(int irq
, void *data
)
1203 struct net_device
*netdev
= data
;
1204 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1205 struct e1000_hw
*hw
= &adapter
->hw
;
1206 u32 rctl
, icr
= er32(ICR
);
1209 return IRQ_NONE
; /* Not our interrupt */
1212 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1213 * not set, then the adapter didn't send an interrupt
1215 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1219 * Interrupt Auto-Mask...upon reading ICR,
1220 * interrupts are masked. No need for the
1224 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1225 hw
->mac
.get_link_status
= 1;
1227 * ICH8 workaround-- Call gig speed drop workaround on cable
1228 * disconnect (LSC) before accessing any PHY registers
1230 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1231 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1232 schedule_work(&adapter
->downshift_task
);
1235 * 80003ES2LAN workaround--
1236 * For packet buffer work-around on link down event;
1237 * disable receives here in the ISR and
1238 * reset adapter in watchdog
1240 if (netif_carrier_ok(netdev
) &&
1241 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1242 /* disable receives */
1244 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1245 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1247 /* guard against interrupt when we're going down */
1248 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1249 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1252 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1253 adapter
->total_tx_bytes
= 0;
1254 adapter
->total_tx_packets
= 0;
1255 adapter
->total_rx_bytes
= 0;
1256 adapter
->total_rx_packets
= 0;
1257 __netif_rx_schedule(netdev
, &adapter
->napi
);
1263 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1265 struct net_device
*netdev
= data
;
1266 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1267 struct e1000_hw
*hw
= &adapter
->hw
;
1268 u32 icr
= er32(ICR
);
1270 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1271 ew32(IMS
, E1000_IMS_OTHER
);
1275 if (icr
& adapter
->eiac_mask
)
1276 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1278 if (icr
& E1000_ICR_OTHER
) {
1279 if (!(icr
& E1000_ICR_LSC
))
1280 goto no_link_interrupt
;
1281 hw
->mac
.get_link_status
= 1;
1282 /* guard against interrupt when we're going down */
1283 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1284 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1288 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1294 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1296 struct net_device
*netdev
= data
;
1297 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1298 struct e1000_hw
*hw
= &adapter
->hw
;
1299 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1302 adapter
->total_tx_bytes
= 0;
1303 adapter
->total_tx_packets
= 0;
1305 if (!e1000_clean_tx_irq(adapter
))
1306 /* Ring was not completely cleaned, so fire another interrupt */
1307 ew32(ICS
, tx_ring
->ims_val
);
1312 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1314 struct net_device
*netdev
= data
;
1315 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1317 /* Write the ITR value calculated at the end of the
1318 * previous interrupt.
1320 if (adapter
->rx_ring
->set_itr
) {
1321 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1322 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1323 adapter
->rx_ring
->set_itr
= 0;
1326 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1327 adapter
->total_rx_bytes
= 0;
1328 adapter
->total_rx_packets
= 0;
1329 __netif_rx_schedule(netdev
, &adapter
->napi
);
1335 * e1000_configure_msix - Configure MSI-X hardware
1337 * e1000_configure_msix sets up the hardware to properly
1338 * generate MSI-X interrupts.
1340 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1342 struct e1000_hw
*hw
= &adapter
->hw
;
1343 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1344 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1346 u32 ctrl_ext
, ivar
= 0;
1348 adapter
->eiac_mask
= 0;
1350 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1351 if (hw
->mac
.type
== e1000_82574
) {
1352 u32 rfctl
= er32(RFCTL
);
1353 rfctl
|= E1000_RFCTL_ACK_DIS
;
1357 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1358 /* Configure Rx vector */
1359 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1360 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1361 if (rx_ring
->itr_val
)
1362 writel(1000000000 / (rx_ring
->itr_val
* 256),
1363 hw
->hw_addr
+ rx_ring
->itr_register
);
1365 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1366 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1368 /* Configure Tx vector */
1369 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1371 if (tx_ring
->itr_val
)
1372 writel(1000000000 / (tx_ring
->itr_val
* 256),
1373 hw
->hw_addr
+ tx_ring
->itr_register
);
1375 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1376 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1377 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1379 /* set vector for Other Causes, e.g. link changes */
1381 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1382 if (rx_ring
->itr_val
)
1383 writel(1000000000 / (rx_ring
->itr_val
* 256),
1384 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1386 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1388 /* Cause Tx interrupts on every write back */
1393 /* enable MSI-X PBA support */
1394 ctrl_ext
= er32(CTRL_EXT
);
1395 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1397 /* Auto-Mask Other interrupts upon ICR read */
1398 #define E1000_EIAC_MASK_82574 0x01F00000
1399 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1400 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1401 ew32(CTRL_EXT
, ctrl_ext
);
1405 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1407 if (adapter
->msix_entries
) {
1408 pci_disable_msix(adapter
->pdev
);
1409 kfree(adapter
->msix_entries
);
1410 adapter
->msix_entries
= NULL
;
1411 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1412 pci_disable_msi(adapter
->pdev
);
1413 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1420 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1422 * Attempt to configure interrupts using the best available
1423 * capabilities of the hardware and kernel.
1425 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1431 switch (adapter
->int_mode
) {
1432 case E1000E_INT_MODE_MSIX
:
1433 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1434 numvecs
= 3; /* RxQ0, TxQ0 and other */
1435 adapter
->msix_entries
= kcalloc(numvecs
,
1436 sizeof(struct msix_entry
),
1438 if (adapter
->msix_entries
) {
1439 for (i
= 0; i
< numvecs
; i
++)
1440 adapter
->msix_entries
[i
].entry
= i
;
1442 err
= pci_enable_msix(adapter
->pdev
,
1443 adapter
->msix_entries
,
1448 /* MSI-X failed, so fall through and try MSI */
1449 e_err("Failed to initialize MSI-X interrupts. "
1450 "Falling back to MSI interrupts.\n");
1451 e1000e_reset_interrupt_capability(adapter
);
1453 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1455 case E1000E_INT_MODE_MSI
:
1456 if (!pci_enable_msi(adapter
->pdev
)) {
1457 adapter
->flags
|= FLAG_MSI_ENABLED
;
1459 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1460 e_err("Failed to initialize MSI interrupts. Falling "
1461 "back to legacy interrupts.\n");
1464 case E1000E_INT_MODE_LEGACY
:
1465 /* Don't do anything; this is the system default */
1473 * e1000_request_msix - Initialize MSI-X interrupts
1475 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1478 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1480 struct net_device
*netdev
= adapter
->netdev
;
1481 int err
= 0, vector
= 0;
1483 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1484 sprintf(adapter
->rx_ring
->name
, "%s-rx0", netdev
->name
);
1486 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1487 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1488 &e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1492 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1493 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1496 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1497 sprintf(adapter
->tx_ring
->name
, "%s-tx0", netdev
->name
);
1499 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1500 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1501 &e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1505 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1506 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1509 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1510 &e1000_msix_other
, 0, netdev
->name
, netdev
);
1514 e1000_configure_msix(adapter
);
1521 * e1000_request_irq - initialize interrupts
1523 * Attempts to configure interrupts using the best available
1524 * capabilities of the hardware and kernel.
1526 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1528 struct net_device
*netdev
= adapter
->netdev
;
1531 if (adapter
->msix_entries
) {
1532 err
= e1000_request_msix(adapter
);
1535 /* fall back to MSI */
1536 e1000e_reset_interrupt_capability(adapter
);
1537 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1538 e1000e_set_interrupt_capability(adapter
);
1540 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1541 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, 0,
1542 netdev
->name
, netdev
);
1546 /* fall back to legacy interrupt */
1547 e1000e_reset_interrupt_capability(adapter
);
1548 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1551 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, IRQF_SHARED
,
1552 netdev
->name
, netdev
);
1554 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1559 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1561 struct net_device
*netdev
= adapter
->netdev
;
1563 if (adapter
->msix_entries
) {
1566 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1569 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1572 /* Other Causes interrupt vector */
1573 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1577 free_irq(adapter
->pdev
->irq
, netdev
);
1581 * e1000_irq_disable - Mask off interrupt generation on the NIC
1583 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1585 struct e1000_hw
*hw
= &adapter
->hw
;
1588 if (adapter
->msix_entries
)
1589 ew32(EIAC_82574
, 0);
1591 synchronize_irq(adapter
->pdev
->irq
);
1595 * e1000_irq_enable - Enable default interrupt generation settings
1597 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1599 struct e1000_hw
*hw
= &adapter
->hw
;
1601 if (adapter
->msix_entries
) {
1602 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1603 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1605 ew32(IMS
, IMS_ENABLE_MASK
);
1611 * e1000_get_hw_control - get control of the h/w from f/w
1612 * @adapter: address of board private structure
1614 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1615 * For ASF and Pass Through versions of f/w this means that
1616 * the driver is loaded. For AMT version (only with 82573)
1617 * of the f/w this means that the network i/f is open.
1619 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1621 struct e1000_hw
*hw
= &adapter
->hw
;
1625 /* Let firmware know the driver has taken over */
1626 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1628 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1629 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1630 ctrl_ext
= er32(CTRL_EXT
);
1631 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1636 * e1000_release_hw_control - release control of the h/w to f/w
1637 * @adapter: address of board private structure
1639 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1640 * For ASF and Pass Through versions of f/w this means that the
1641 * driver is no longer loaded. For AMT version (only with 82573) i
1642 * of the f/w this means that the network i/f is closed.
1645 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1647 struct e1000_hw
*hw
= &adapter
->hw
;
1651 /* Let firmware taken over control of h/w */
1652 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1654 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1655 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1656 ctrl_ext
= er32(CTRL_EXT
);
1657 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1662 * @e1000_alloc_ring - allocate memory for a ring structure
1664 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1665 struct e1000_ring
*ring
)
1667 struct pci_dev
*pdev
= adapter
->pdev
;
1669 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1678 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1679 * @adapter: board private structure
1681 * Return 0 on success, negative on failure
1683 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1685 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1686 int err
= -ENOMEM
, size
;
1688 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1689 tx_ring
->buffer_info
= vmalloc(size
);
1690 if (!tx_ring
->buffer_info
)
1692 memset(tx_ring
->buffer_info
, 0, size
);
1694 /* round up to nearest 4K */
1695 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1696 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1698 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1702 tx_ring
->next_to_use
= 0;
1703 tx_ring
->next_to_clean
= 0;
1704 spin_lock_init(&adapter
->tx_queue_lock
);
1708 vfree(tx_ring
->buffer_info
);
1709 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1714 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1715 * @adapter: board private structure
1717 * Returns 0 on success, negative on failure
1719 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1721 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1722 struct e1000_buffer
*buffer_info
;
1723 int i
, size
, desc_len
, err
= -ENOMEM
;
1725 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1726 rx_ring
->buffer_info
= vmalloc(size
);
1727 if (!rx_ring
->buffer_info
)
1729 memset(rx_ring
->buffer_info
, 0, size
);
1731 for (i
= 0; i
< rx_ring
->count
; i
++) {
1732 buffer_info
= &rx_ring
->buffer_info
[i
];
1733 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1734 sizeof(struct e1000_ps_page
),
1736 if (!buffer_info
->ps_pages
)
1740 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1742 /* Round up to nearest 4K */
1743 rx_ring
->size
= rx_ring
->count
* desc_len
;
1744 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1746 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1750 rx_ring
->next_to_clean
= 0;
1751 rx_ring
->next_to_use
= 0;
1752 rx_ring
->rx_skb_top
= NULL
;
1757 for (i
= 0; i
< rx_ring
->count
; i
++) {
1758 buffer_info
= &rx_ring
->buffer_info
[i
];
1759 kfree(buffer_info
->ps_pages
);
1762 vfree(rx_ring
->buffer_info
);
1763 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1768 * e1000_clean_tx_ring - Free Tx Buffers
1769 * @adapter: board private structure
1771 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1773 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1774 struct e1000_buffer
*buffer_info
;
1778 for (i
= 0; i
< tx_ring
->count
; i
++) {
1779 buffer_info
= &tx_ring
->buffer_info
[i
];
1780 e1000_put_txbuf(adapter
, buffer_info
);
1783 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1784 memset(tx_ring
->buffer_info
, 0, size
);
1786 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1788 tx_ring
->next_to_use
= 0;
1789 tx_ring
->next_to_clean
= 0;
1791 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1792 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1796 * e1000e_free_tx_resources - Free Tx Resources per Queue
1797 * @adapter: board private structure
1799 * Free all transmit software resources
1801 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1803 struct pci_dev
*pdev
= adapter
->pdev
;
1804 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1806 e1000_clean_tx_ring(adapter
);
1808 vfree(tx_ring
->buffer_info
);
1809 tx_ring
->buffer_info
= NULL
;
1811 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1813 tx_ring
->desc
= NULL
;
1817 * e1000e_free_rx_resources - Free Rx Resources
1818 * @adapter: board private structure
1820 * Free all receive software resources
1823 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1825 struct pci_dev
*pdev
= adapter
->pdev
;
1826 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1829 e1000_clean_rx_ring(adapter
);
1831 for (i
= 0; i
< rx_ring
->count
; i
++) {
1832 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1835 vfree(rx_ring
->buffer_info
);
1836 rx_ring
->buffer_info
= NULL
;
1838 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1840 rx_ring
->desc
= NULL
;
1844 * e1000_update_itr - update the dynamic ITR value based on statistics
1845 * @adapter: pointer to adapter
1846 * @itr_setting: current adapter->itr
1847 * @packets: the number of packets during this measurement interval
1848 * @bytes: the number of bytes during this measurement interval
1850 * Stores a new ITR value based on packets and byte
1851 * counts during the last interrupt. The advantage of per interrupt
1852 * computation is faster updates and more accurate ITR for the current
1853 * traffic pattern. Constants in this function were computed
1854 * based on theoretical maximum wire speed and thresholds were set based
1855 * on testing data as well as attempting to minimize response time
1856 * while increasing bulk throughput. This functionality is controlled
1857 * by the InterruptThrottleRate module parameter.
1859 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1860 u16 itr_setting
, int packets
,
1863 unsigned int retval
= itr_setting
;
1866 goto update_itr_done
;
1868 switch (itr_setting
) {
1869 case lowest_latency
:
1870 /* handle TSO and jumbo frames */
1871 if (bytes
/packets
> 8000)
1872 retval
= bulk_latency
;
1873 else if ((packets
< 5) && (bytes
> 512)) {
1874 retval
= low_latency
;
1877 case low_latency
: /* 50 usec aka 20000 ints/s */
1878 if (bytes
> 10000) {
1879 /* this if handles the TSO accounting */
1880 if (bytes
/packets
> 8000) {
1881 retval
= bulk_latency
;
1882 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1883 retval
= bulk_latency
;
1884 } else if ((packets
> 35)) {
1885 retval
= lowest_latency
;
1887 } else if (bytes
/packets
> 2000) {
1888 retval
= bulk_latency
;
1889 } else if (packets
<= 2 && bytes
< 512) {
1890 retval
= lowest_latency
;
1893 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1894 if (bytes
> 25000) {
1896 retval
= low_latency
;
1898 } else if (bytes
< 6000) {
1899 retval
= low_latency
;
1908 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1910 struct e1000_hw
*hw
= &adapter
->hw
;
1912 u32 new_itr
= adapter
->itr
;
1914 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1915 if (adapter
->link_speed
!= SPEED_1000
) {
1921 adapter
->tx_itr
= e1000_update_itr(adapter
,
1923 adapter
->total_tx_packets
,
1924 adapter
->total_tx_bytes
);
1925 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1926 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1927 adapter
->tx_itr
= low_latency
;
1929 adapter
->rx_itr
= e1000_update_itr(adapter
,
1931 adapter
->total_rx_packets
,
1932 adapter
->total_rx_bytes
);
1933 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1934 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1935 adapter
->rx_itr
= low_latency
;
1937 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1939 switch (current_itr
) {
1940 /* counts and packets in update_itr are dependent on these numbers */
1941 case lowest_latency
:
1945 new_itr
= 20000; /* aka hwitr = ~200 */
1955 if (new_itr
!= adapter
->itr
) {
1957 * this attempts to bias the interrupt rate towards Bulk
1958 * by adding intermediate steps when interrupt rate is
1961 new_itr
= new_itr
> adapter
->itr
?
1962 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1964 adapter
->itr
= new_itr
;
1965 adapter
->rx_ring
->itr_val
= new_itr
;
1966 if (adapter
->msix_entries
)
1967 adapter
->rx_ring
->set_itr
= 1;
1969 ew32(ITR
, 1000000000 / (new_itr
* 256));
1974 * e1000_alloc_queues - Allocate memory for all rings
1975 * @adapter: board private structure to initialize
1977 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1979 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1980 if (!adapter
->tx_ring
)
1983 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1984 if (!adapter
->rx_ring
)
1989 e_err("Unable to allocate memory for queues\n");
1990 kfree(adapter
->rx_ring
);
1991 kfree(adapter
->tx_ring
);
1996 * e1000_clean - NAPI Rx polling callback
1997 * @napi: struct associated with this polling callback
1998 * @budget: amount of packets driver is allowed to process this poll
2000 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2002 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2003 struct e1000_hw
*hw
= &adapter
->hw
;
2004 struct net_device
*poll_dev
= adapter
->netdev
;
2005 int tx_cleaned
= 0, work_done
= 0;
2007 /* Must NOT use netdev_priv macro here. */
2008 adapter
= poll_dev
->priv
;
2010 if (adapter
->msix_entries
&&
2011 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2015 * e1000_clean is called per-cpu. This lock protects
2016 * tx_ring from being cleaned by multiple cpus
2017 * simultaneously. A failure obtaining the lock means
2018 * tx_ring is currently being cleaned anyway.
2020 if (spin_trylock(&adapter
->tx_queue_lock
)) {
2021 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2022 spin_unlock(&adapter
->tx_queue_lock
);
2026 adapter
->clean_rx(adapter
, &work_done
, budget
);
2031 /* If budget not fully consumed, exit the polling mode */
2032 if (work_done
< budget
) {
2033 if (adapter
->itr_setting
& 3)
2034 e1000_set_itr(adapter
);
2035 netif_rx_complete(poll_dev
, napi
);
2036 if (adapter
->msix_entries
)
2037 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2039 e1000_irq_enable(adapter
);
2045 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2047 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2048 struct e1000_hw
*hw
= &adapter
->hw
;
2051 /* don't update vlan cookie if already programmed */
2052 if ((adapter
->hw
.mng_cookie
.status
&
2053 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2054 (vid
== adapter
->mng_vlan_id
))
2056 /* add VID to filter table */
2057 index
= (vid
>> 5) & 0x7F;
2058 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2059 vfta
|= (1 << (vid
& 0x1F));
2060 e1000e_write_vfta(hw
, index
, vfta
);
2063 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2065 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2066 struct e1000_hw
*hw
= &adapter
->hw
;
2069 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2070 e1000_irq_disable(adapter
);
2071 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2073 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2074 e1000_irq_enable(adapter
);
2076 if ((adapter
->hw
.mng_cookie
.status
&
2077 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2078 (vid
== adapter
->mng_vlan_id
)) {
2079 /* release control to f/w */
2080 e1000_release_hw_control(adapter
);
2084 /* remove VID from filter table */
2085 index
= (vid
>> 5) & 0x7F;
2086 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2087 vfta
&= ~(1 << (vid
& 0x1F));
2088 e1000e_write_vfta(hw
, index
, vfta
);
2091 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2093 struct net_device
*netdev
= adapter
->netdev
;
2094 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2095 u16 old_vid
= adapter
->mng_vlan_id
;
2097 if (!adapter
->vlgrp
)
2100 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2101 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2102 if (adapter
->hw
.mng_cookie
.status
&
2103 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2104 e1000_vlan_rx_add_vid(netdev
, vid
);
2105 adapter
->mng_vlan_id
= vid
;
2108 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2110 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2111 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2113 adapter
->mng_vlan_id
= vid
;
2118 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2119 struct vlan_group
*grp
)
2121 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2122 struct e1000_hw
*hw
= &adapter
->hw
;
2125 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2126 e1000_irq_disable(adapter
);
2127 adapter
->vlgrp
= grp
;
2130 /* enable VLAN tag insert/strip */
2132 ctrl
|= E1000_CTRL_VME
;
2135 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2136 /* enable VLAN receive filtering */
2138 rctl
&= ~E1000_RCTL_CFIEN
;
2140 e1000_update_mng_vlan(adapter
);
2143 /* disable VLAN tag insert/strip */
2145 ctrl
&= ~E1000_CTRL_VME
;
2148 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2149 if (adapter
->mng_vlan_id
!=
2150 (u16
)E1000_MNG_VLAN_NONE
) {
2151 e1000_vlan_rx_kill_vid(netdev
,
2152 adapter
->mng_vlan_id
);
2153 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2158 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2159 e1000_irq_enable(adapter
);
2162 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2166 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2168 if (!adapter
->vlgrp
)
2171 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2172 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2174 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2178 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
2180 struct e1000_hw
*hw
= &adapter
->hw
;
2183 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2189 * enable receiving management packets to the host. this will probably
2190 * generate destination unreachable messages from the host OS, but
2191 * the packets will be handled on SMBUS
2193 manc
|= E1000_MANC_EN_MNG2HOST
;
2194 manc2h
= er32(MANC2H
);
2195 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2196 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2197 manc2h
|= E1000_MNG2HOST_PORT_623
;
2198 manc2h
|= E1000_MNG2HOST_PORT_664
;
2199 ew32(MANC2H
, manc2h
);
2204 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2205 * @adapter: board private structure
2207 * Configure the Tx unit of the MAC after a reset.
2209 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2211 struct e1000_hw
*hw
= &adapter
->hw
;
2212 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2214 u32 tdlen
, tctl
, tipg
, tarc
;
2217 /* Setup the HW Tx Head and Tail descriptor pointers */
2218 tdba
= tx_ring
->dma
;
2219 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2220 ew32(TDBAL
, (tdba
& DMA_32BIT_MASK
));
2221 ew32(TDBAH
, (tdba
>> 32));
2225 tx_ring
->head
= E1000_TDH
;
2226 tx_ring
->tail
= E1000_TDT
;
2228 /* Set the default values for the Tx Inter Packet Gap timer */
2229 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2230 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2231 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2233 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2234 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2236 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2237 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2240 /* Set the Tx Interrupt Delay register */
2241 ew32(TIDV
, adapter
->tx_int_delay
);
2242 /* Tx irq moderation */
2243 ew32(TADV
, adapter
->tx_abs_int_delay
);
2245 /* Program the Transmit Control Register */
2247 tctl
&= ~E1000_TCTL_CT
;
2248 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2249 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2251 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2252 tarc
= er32(TARC(0));
2254 * set the speed mode bit, we'll clear it if we're not at
2255 * gigabit link later
2257 #define SPEED_MODE_BIT (1 << 21)
2258 tarc
|= SPEED_MODE_BIT
;
2259 ew32(TARC(0), tarc
);
2262 /* errata: program both queues to unweighted RR */
2263 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2264 tarc
= er32(TARC(0));
2266 ew32(TARC(0), tarc
);
2267 tarc
= er32(TARC(1));
2269 ew32(TARC(1), tarc
);
2272 e1000e_config_collision_dist(hw
);
2274 /* Setup Transmit Descriptor Settings for eop descriptor */
2275 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2277 /* only set IDE if we are delaying interrupts using the timers */
2278 if (adapter
->tx_int_delay
)
2279 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2281 /* enable Report Status bit */
2282 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2286 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
2290 * e1000_setup_rctl - configure the receive control registers
2291 * @adapter: Board private structure
2293 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2294 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2295 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2297 struct e1000_hw
*hw
= &adapter
->hw
;
2302 /* Program MC offset vector base */
2304 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2305 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2306 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2307 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2309 /* Do not Store bad packets */
2310 rctl
&= ~E1000_RCTL_SBP
;
2312 /* Enable Long Packet receive */
2313 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2314 rctl
&= ~E1000_RCTL_LPE
;
2316 rctl
|= E1000_RCTL_LPE
;
2318 /* Some systems expect that the CRC is included in SMBUS traffic. The
2319 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2320 * host memory when this is enabled
2322 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2323 rctl
|= E1000_RCTL_SECRC
;
2325 /* Setup buffer sizes */
2326 rctl
&= ~E1000_RCTL_SZ_4096
;
2327 rctl
|= E1000_RCTL_BSEX
;
2328 switch (adapter
->rx_buffer_len
) {
2330 rctl
|= E1000_RCTL_SZ_256
;
2331 rctl
&= ~E1000_RCTL_BSEX
;
2334 rctl
|= E1000_RCTL_SZ_512
;
2335 rctl
&= ~E1000_RCTL_BSEX
;
2338 rctl
|= E1000_RCTL_SZ_1024
;
2339 rctl
&= ~E1000_RCTL_BSEX
;
2343 rctl
|= E1000_RCTL_SZ_2048
;
2344 rctl
&= ~E1000_RCTL_BSEX
;
2347 rctl
|= E1000_RCTL_SZ_4096
;
2350 rctl
|= E1000_RCTL_SZ_8192
;
2353 rctl
|= E1000_RCTL_SZ_16384
;
2358 * 82571 and greater support packet-split where the protocol
2359 * header is placed in skb->data and the packet data is
2360 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2361 * In the case of a non-split, skb->data is linearly filled,
2362 * followed by the page buffers. Therefore, skb->data is
2363 * sized to hold the largest protocol header.
2365 * allocations using alloc_page take too long for regular MTU
2366 * so only enable packet split for jumbo frames
2368 * Using pages when the page size is greater than 16k wastes
2369 * a lot of memory, since we allocate 3 pages at all times
2372 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2373 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2374 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2375 adapter
->rx_ps_pages
= pages
;
2377 adapter
->rx_ps_pages
= 0;
2379 if (adapter
->rx_ps_pages
) {
2380 /* Configure extra packet-split registers */
2381 rfctl
= er32(RFCTL
);
2382 rfctl
|= E1000_RFCTL_EXTEN
;
2384 * disable packet split support for IPv6 extension headers,
2385 * because some malformed IPv6 headers can hang the Rx
2387 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2388 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2392 /* Enable Packet split descriptors */
2393 rctl
|= E1000_RCTL_DTYP_PS
;
2395 psrctl
|= adapter
->rx_ps_bsize0
>>
2396 E1000_PSRCTL_BSIZE0_SHIFT
;
2398 switch (adapter
->rx_ps_pages
) {
2400 psrctl
|= PAGE_SIZE
<<
2401 E1000_PSRCTL_BSIZE3_SHIFT
;
2403 psrctl
|= PAGE_SIZE
<<
2404 E1000_PSRCTL_BSIZE2_SHIFT
;
2406 psrctl
|= PAGE_SIZE
>>
2407 E1000_PSRCTL_BSIZE1_SHIFT
;
2411 ew32(PSRCTL
, psrctl
);
2415 /* just started the receive unit, no need to restart */
2416 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2420 * e1000_configure_rx - Configure Receive Unit after Reset
2421 * @adapter: board private structure
2423 * Configure the Rx unit of the MAC after a reset.
2425 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2427 struct e1000_hw
*hw
= &adapter
->hw
;
2428 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2430 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2432 if (adapter
->rx_ps_pages
) {
2433 /* this is a 32 byte descriptor */
2434 rdlen
= rx_ring
->count
*
2435 sizeof(union e1000_rx_desc_packet_split
);
2436 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2437 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2438 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2439 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2440 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2441 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2443 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2444 adapter
->clean_rx
= e1000_clean_rx_irq
;
2445 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2448 /* disable receives while setting up the descriptors */
2450 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2454 /* set the Receive Delay Timer Register */
2455 ew32(RDTR
, adapter
->rx_int_delay
);
2457 /* irq moderation */
2458 ew32(RADV
, adapter
->rx_abs_int_delay
);
2459 if (adapter
->itr_setting
!= 0)
2460 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2462 ctrl_ext
= er32(CTRL_EXT
);
2463 /* Reset delay timers after every interrupt */
2464 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2465 /* Auto-Mask interrupts upon ICR access */
2466 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2467 ew32(IAM
, 0xffffffff);
2468 ew32(CTRL_EXT
, ctrl_ext
);
2472 * Setup the HW Rx Head and Tail Descriptor Pointers and
2473 * the Base and Length of the Rx Descriptor Ring
2475 rdba
= rx_ring
->dma
;
2476 ew32(RDBAL
, (rdba
& DMA_32BIT_MASK
));
2477 ew32(RDBAH
, (rdba
>> 32));
2481 rx_ring
->head
= E1000_RDH
;
2482 rx_ring
->tail
= E1000_RDT
;
2484 /* Enable Receive Checksum Offload for TCP and UDP */
2485 rxcsum
= er32(RXCSUM
);
2486 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2487 rxcsum
|= E1000_RXCSUM_TUOFL
;
2490 * IPv4 payload checksum for UDP fragments must be
2491 * used in conjunction with packet-split.
2493 if (adapter
->rx_ps_pages
)
2494 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2496 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2497 /* no need to clear IPPCSE as it defaults to 0 */
2499 ew32(RXCSUM
, rxcsum
);
2502 * Enable early receives on supported devices, only takes effect when
2503 * packet size is equal or larger than the specified value (in 8 byte
2504 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2506 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2507 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2508 u32 rxdctl
= er32(RXDCTL(0));
2509 ew32(RXDCTL(0), rxdctl
| 0x3);
2510 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2512 * With jumbo frames and early-receive enabled, excessive
2513 * C4->C2 latencies result in dropped transactions.
2515 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2516 e1000e_driver_name
, 55);
2518 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2520 PM_QOS_DEFAULT_VALUE
);
2523 /* Enable Receives */
2528 * e1000_update_mc_addr_list - Update Multicast addresses
2529 * @hw: pointer to the HW structure
2530 * @mc_addr_list: array of multicast addresses to program
2531 * @mc_addr_count: number of multicast addresses to program
2532 * @rar_used_count: the first RAR register free to program
2533 * @rar_count: total number of supported Receive Address Registers
2535 * Updates the Receive Address Registers and Multicast Table Array.
2536 * The caller must have a packed mc_addr_list of multicast addresses.
2537 * The parameter rar_count will usually be hw->mac.rar_entry_count
2538 * unless there are workarounds that change this. Currently no func pointer
2539 * exists and all implementations are handled in the generic version of this
2542 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2543 u32 mc_addr_count
, u32 rar_used_count
,
2546 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2547 rar_used_count
, rar_count
);
2551 * e1000_set_multi - Multicast and Promiscuous mode set
2552 * @netdev: network interface device structure
2554 * The set_multi entry point is called whenever the multicast address
2555 * list or the network interface flags are updated. This routine is
2556 * responsible for configuring the hardware for proper multicast,
2557 * promiscuous mode, and all-multi behavior.
2559 static void e1000_set_multi(struct net_device
*netdev
)
2561 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2562 struct e1000_hw
*hw
= &adapter
->hw
;
2563 struct e1000_mac_info
*mac
= &hw
->mac
;
2564 struct dev_mc_list
*mc_ptr
;
2569 /* Check for Promiscuous and All Multicast modes */
2573 if (netdev
->flags
& IFF_PROMISC
) {
2574 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2575 rctl
&= ~E1000_RCTL_VFE
;
2577 if (netdev
->flags
& IFF_ALLMULTI
) {
2578 rctl
|= E1000_RCTL_MPE
;
2579 rctl
&= ~E1000_RCTL_UPE
;
2581 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2583 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2584 rctl
|= E1000_RCTL_VFE
;
2589 if (netdev
->mc_count
) {
2590 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2594 /* prepare a packed array of only addresses. */
2595 mc_ptr
= netdev
->mc_list
;
2597 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2600 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2602 mc_ptr
= mc_ptr
->next
;
2605 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2606 mac
->rar_entry_count
);
2610 * if we're called from probe, we might not have
2611 * anything to do here, so clear out the list
2613 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2618 * e1000_configure - configure the hardware for Rx and Tx
2619 * @adapter: private board structure
2621 static void e1000_configure(struct e1000_adapter
*adapter
)
2623 e1000_set_multi(adapter
->netdev
);
2625 e1000_restore_vlan(adapter
);
2626 e1000_init_manageability(adapter
);
2628 e1000_configure_tx(adapter
);
2629 e1000_setup_rctl(adapter
);
2630 e1000_configure_rx(adapter
);
2631 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2635 * e1000e_power_up_phy - restore link in case the phy was powered down
2636 * @adapter: address of board private structure
2638 * The phy may be powered down to save power and turn off link when the
2639 * driver is unloaded and wake on lan is not enabled (among others)
2640 * *** this routine MUST be followed by a call to e1000e_reset ***
2642 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2646 /* Just clear the power down bit to wake the phy back up */
2647 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2649 * According to the manual, the phy will retain its
2650 * settings across a power-down/up cycle
2652 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2653 mii_reg
&= ~MII_CR_POWER_DOWN
;
2654 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2657 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2661 * e1000_power_down_phy - Power down the PHY
2663 * Power down the PHY so no link is implied when interface is down
2664 * The PHY cannot be powered down is management or WoL is active
2666 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2668 struct e1000_hw
*hw
= &adapter
->hw
;
2671 /* WoL is enabled */
2675 /* non-copper PHY? */
2676 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2679 /* reset is blocked because of a SoL/IDER session */
2680 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2683 /* manageability (AMT) is enabled */
2684 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2687 /* power down the PHY */
2688 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2689 mii_reg
|= MII_CR_POWER_DOWN
;
2690 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2695 * e1000e_reset - bring the hardware into a known good state
2697 * This function boots the hardware and enables some settings that
2698 * require a configuration cycle of the hardware - those cannot be
2699 * set/changed during runtime. After reset the device needs to be
2700 * properly configured for Rx, Tx etc.
2702 void e1000e_reset(struct e1000_adapter
*adapter
)
2704 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2705 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2706 struct e1000_hw
*hw
= &adapter
->hw
;
2707 u32 tx_space
, min_tx_space
, min_rx_space
;
2708 u32 pba
= adapter
->pba
;
2711 /* reset Packet Buffer Allocation to default */
2714 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2716 * To maintain wire speed transmits, the Tx FIFO should be
2717 * large enough to accommodate two full transmit packets,
2718 * rounded up to the next 1KB and expressed in KB. Likewise,
2719 * the Rx FIFO should be large enough to accommodate at least
2720 * one full receive packet and is similarly rounded up and
2724 /* upper 16 bits has Tx packet buffer allocation size in KB */
2725 tx_space
= pba
>> 16;
2726 /* lower 16 bits has Rx packet buffer allocation size in KB */
2729 * the Tx fifo also stores 16 bytes of information about the tx
2730 * but don't include ethernet FCS because hardware appends it
2732 min_tx_space
= (adapter
->max_frame_size
+
2733 sizeof(struct e1000_tx_desc
) -
2735 min_tx_space
= ALIGN(min_tx_space
, 1024);
2736 min_tx_space
>>= 10;
2737 /* software strips receive CRC, so leave room for it */
2738 min_rx_space
= adapter
->max_frame_size
;
2739 min_rx_space
= ALIGN(min_rx_space
, 1024);
2740 min_rx_space
>>= 10;
2743 * If current Tx allocation is less than the min Tx FIFO size,
2744 * and the min Tx FIFO size is less than the current Rx FIFO
2745 * allocation, take space away from current Rx allocation
2747 if ((tx_space
< min_tx_space
) &&
2748 ((min_tx_space
- tx_space
) < pba
)) {
2749 pba
-= min_tx_space
- tx_space
;
2752 * if short on Rx space, Rx wins and must trump tx
2753 * adjustment or use Early Receive if available
2755 if ((pba
< min_rx_space
) &&
2756 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2757 /* ERT enabled in e1000_configure_rx */
2766 * flow control settings
2768 * The high water mark must be low enough to fit one full frame
2769 * (or the size used for early receive) above it in the Rx FIFO.
2770 * Set it to the lower of:
2771 * - 90% of the Rx FIFO size, and
2772 * - the full Rx FIFO size minus the early receive size (for parts
2773 * with ERT support assuming ERT set to E1000_ERT_2048), or
2774 * - the full Rx FIFO size minus one full frame
2776 if (adapter
->flags
& FLAG_HAS_ERT
)
2777 hwm
= min(((pba
<< 10) * 9 / 10),
2778 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2780 hwm
= min(((pba
<< 10) * 9 / 10),
2781 ((pba
<< 10) - adapter
->max_frame_size
));
2783 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2784 fc
->low_water
= fc
->high_water
- 8;
2786 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2787 fc
->pause_time
= 0xFFFF;
2789 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2791 fc
->type
= fc
->original_type
;
2793 /* Allow time for pending master requests to run */
2794 mac
->ops
.reset_hw(hw
);
2797 * For parts with AMT enabled, let the firmware know
2798 * that the network interface is in control
2800 if (adapter
->flags
& FLAG_HAS_AMT
)
2801 e1000_get_hw_control(adapter
);
2805 if (mac
->ops
.init_hw(hw
))
2806 e_err("Hardware Error\n");
2808 e1000_update_mng_vlan(adapter
);
2810 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2811 ew32(VET
, ETH_P_8021Q
);
2813 e1000e_reset_adaptive(hw
);
2814 e1000_get_phy_info(hw
);
2816 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2819 * speed up time to link by disabling smart power down, ignore
2820 * the return value of this function because there is nothing
2821 * different we would do if it failed
2823 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2824 phy_data
&= ~IGP02E1000_PM_SPD
;
2825 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2829 int e1000e_up(struct e1000_adapter
*adapter
)
2831 struct e1000_hw
*hw
= &adapter
->hw
;
2833 /* hardware has been reset, we need to reload some things */
2834 e1000_configure(adapter
);
2836 clear_bit(__E1000_DOWN
, &adapter
->state
);
2838 napi_enable(&adapter
->napi
);
2839 if (adapter
->msix_entries
)
2840 e1000_configure_msix(adapter
);
2841 e1000_irq_enable(adapter
);
2843 /* fire a link change interrupt to start the watchdog */
2844 ew32(ICS
, E1000_ICS_LSC
);
2848 void e1000e_down(struct e1000_adapter
*adapter
)
2850 struct net_device
*netdev
= adapter
->netdev
;
2851 struct e1000_hw
*hw
= &adapter
->hw
;
2855 * signal that we're down so the interrupt handler does not
2856 * reschedule our watchdog timer
2858 set_bit(__E1000_DOWN
, &adapter
->state
);
2860 /* disable receives in the hardware */
2862 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2863 /* flush and sleep below */
2865 netif_tx_stop_all_queues(netdev
);
2867 /* disable transmits in the hardware */
2869 tctl
&= ~E1000_TCTL_EN
;
2871 /* flush both disables and wait for them to finish */
2875 napi_disable(&adapter
->napi
);
2876 e1000_irq_disable(adapter
);
2878 del_timer_sync(&adapter
->watchdog_timer
);
2879 del_timer_sync(&adapter
->phy_info_timer
);
2881 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2882 netif_carrier_off(netdev
);
2883 adapter
->link_speed
= 0;
2884 adapter
->link_duplex
= 0;
2886 if (!pci_channel_offline(adapter
->pdev
))
2887 e1000e_reset(adapter
);
2888 e1000_clean_tx_ring(adapter
);
2889 e1000_clean_rx_ring(adapter
);
2892 * TODO: for power management, we could drop the link and
2893 * pci_disable_device here.
2897 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2900 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2902 e1000e_down(adapter
);
2904 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2908 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2909 * @adapter: board private structure to initialize
2911 * e1000_sw_init initializes the Adapter private data structure.
2912 * Fields are initialized based on PCI device information and
2913 * OS network device settings (MTU size).
2915 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2917 struct net_device
*netdev
= adapter
->netdev
;
2919 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2920 adapter
->rx_ps_bsize0
= 128;
2921 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2922 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2924 e1000e_set_interrupt_capability(adapter
);
2926 if (e1000_alloc_queues(adapter
))
2929 spin_lock_init(&adapter
->tx_queue_lock
);
2931 /* Explicitly disable IRQ since the NIC can be in any state. */
2932 e1000_irq_disable(adapter
);
2934 set_bit(__E1000_DOWN
, &adapter
->state
);
2939 * e1000_intr_msi_test - Interrupt Handler
2940 * @irq: interrupt number
2941 * @data: pointer to a network interface device structure
2943 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
2945 struct net_device
*netdev
= data
;
2946 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2947 struct e1000_hw
*hw
= &adapter
->hw
;
2948 u32 icr
= er32(ICR
);
2950 e_dbg("%s: icr is %08X\n", netdev
->name
, icr
);
2951 if (icr
& E1000_ICR_RXSEQ
) {
2952 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
2960 * e1000_test_msi_interrupt - Returns 0 for successful test
2961 * @adapter: board private struct
2963 * code flow taken from tg3.c
2965 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
2967 struct net_device
*netdev
= adapter
->netdev
;
2968 struct e1000_hw
*hw
= &adapter
->hw
;
2971 /* poll_enable hasn't been called yet, so don't need disable */
2972 /* clear any pending events */
2975 /* free the real vector and request a test handler */
2976 e1000_free_irq(adapter
);
2977 e1000e_reset_interrupt_capability(adapter
);
2979 /* Assume that the test fails, if it succeeds then the test
2980 * MSI irq handler will unset this flag */
2981 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
2983 err
= pci_enable_msi(adapter
->pdev
);
2985 goto msi_test_failed
;
2987 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi_test
, 0,
2988 netdev
->name
, netdev
);
2990 pci_disable_msi(adapter
->pdev
);
2991 goto msi_test_failed
;
2996 e1000_irq_enable(adapter
);
2998 /* fire an unusual interrupt on the test handler */
2999 ew32(ICS
, E1000_ICS_RXSEQ
);
3003 e1000_irq_disable(adapter
);
3007 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
3008 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
3010 e_info("MSI interrupt test failed!\n");
3013 free_irq(adapter
->pdev
->irq
, netdev
);
3014 pci_disable_msi(adapter
->pdev
);
3017 goto msi_test_failed
;
3019 /* okay so the test worked, restore settings */
3020 e_dbg("%s: MSI interrupt test succeeded!\n", netdev
->name
);
3022 e1000e_set_interrupt_capability(adapter
);
3023 e1000_request_irq(adapter
);
3028 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3029 * @adapter: board private struct
3031 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3033 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3038 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3041 /* disable SERR in case the MSI write causes a master abort */
3042 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3043 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3044 pci_cmd
& ~PCI_COMMAND_SERR
);
3046 err
= e1000_test_msi_interrupt(adapter
);
3048 /* restore previous setting of command word */
3049 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3055 /* EIO means MSI test failed */
3059 /* back to INTx mode */
3060 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3062 e1000_free_irq(adapter
);
3064 err
= e1000_request_irq(adapter
);
3070 * e1000_open - Called when a network interface is made active
3071 * @netdev: network interface device structure
3073 * Returns 0 on success, negative value on failure
3075 * The open entry point is called when a network interface is made
3076 * active by the system (IFF_UP). At this point all resources needed
3077 * for transmit and receive operations are allocated, the interrupt
3078 * handler is registered with the OS, the watchdog timer is started,
3079 * and the stack is notified that the interface is ready.
3081 static int e1000_open(struct net_device
*netdev
)
3083 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3084 struct e1000_hw
*hw
= &adapter
->hw
;
3087 /* disallow open during test */
3088 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3091 /* allocate transmit descriptors */
3092 err
= e1000e_setup_tx_resources(adapter
);
3096 /* allocate receive descriptors */
3097 err
= e1000e_setup_rx_resources(adapter
);
3101 e1000e_power_up_phy(adapter
);
3103 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3104 if ((adapter
->hw
.mng_cookie
.status
&
3105 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3106 e1000_update_mng_vlan(adapter
);
3109 * If AMT is enabled, let the firmware know that the network
3110 * interface is now open
3112 if (adapter
->flags
& FLAG_HAS_AMT
)
3113 e1000_get_hw_control(adapter
);
3116 * before we allocate an interrupt, we must be ready to handle it.
3117 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3118 * as soon as we call pci_request_irq, so we have to setup our
3119 * clean_rx handler before we do so.
3121 e1000_configure(adapter
);
3123 err
= e1000_request_irq(adapter
);
3128 * Work around PCIe errata with MSI interrupts causing some chipsets to
3129 * ignore e1000e MSI messages, which means we need to test our MSI
3132 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3133 err
= e1000_test_msi(adapter
);
3135 e_err("Interrupt allocation failed\n");
3140 /* From here on the code is the same as e1000e_up() */
3141 clear_bit(__E1000_DOWN
, &adapter
->state
);
3143 napi_enable(&adapter
->napi
);
3145 e1000_irq_enable(adapter
);
3147 netif_tx_start_all_queues(netdev
);
3149 /* fire a link status change interrupt to start the watchdog */
3150 ew32(ICS
, E1000_ICS_LSC
);
3155 e1000_release_hw_control(adapter
);
3156 e1000_power_down_phy(adapter
);
3157 e1000e_free_rx_resources(adapter
);
3159 e1000e_free_tx_resources(adapter
);
3161 e1000e_reset(adapter
);
3167 * e1000_close - Disables a network interface
3168 * @netdev: network interface device structure
3170 * Returns 0, this is not allowed to fail
3172 * The close entry point is called when an interface is de-activated
3173 * by the OS. The hardware is still under the drivers control, but
3174 * needs to be disabled. A global MAC reset is issued to stop the
3175 * hardware, and all transmit and receive resources are freed.
3177 static int e1000_close(struct net_device
*netdev
)
3179 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3181 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3182 e1000e_down(adapter
);
3183 e1000_power_down_phy(adapter
);
3184 e1000_free_irq(adapter
);
3186 e1000e_free_tx_resources(adapter
);
3187 e1000e_free_rx_resources(adapter
);
3190 * kill manageability vlan ID if supported, but not if a vlan with
3191 * the same ID is registered on the host OS (let 8021q kill it)
3193 if ((adapter
->hw
.mng_cookie
.status
&
3194 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3196 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3197 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3200 * If AMT is enabled, let the firmware know that the network
3201 * interface is now closed
3203 if (adapter
->flags
& FLAG_HAS_AMT
)
3204 e1000_release_hw_control(adapter
);
3209 * e1000_set_mac - Change the Ethernet Address of the NIC
3210 * @netdev: network interface device structure
3211 * @p: pointer to an address structure
3213 * Returns 0 on success, negative on failure
3215 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3217 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3218 struct sockaddr
*addr
= p
;
3220 if (!is_valid_ether_addr(addr
->sa_data
))
3221 return -EADDRNOTAVAIL
;
3223 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3224 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3226 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3228 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3229 /* activate the work around */
3230 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3233 * Hold a copy of the LAA in RAR[14] This is done so that
3234 * between the time RAR[0] gets clobbered and the time it
3235 * gets fixed (in e1000_watchdog), the actual LAA is in one
3236 * of the RARs and no incoming packets directed to this port
3237 * are dropped. Eventually the LAA will be in RAR[0] and
3240 e1000e_rar_set(&adapter
->hw
,
3241 adapter
->hw
.mac
.addr
,
3242 adapter
->hw
.mac
.rar_entry_count
- 1);
3249 * e1000e_update_phy_task - work thread to update phy
3250 * @work: pointer to our work struct
3252 * this worker thread exists because we must acquire a
3253 * semaphore to read the phy, which we could msleep while
3254 * waiting for it, and we can't msleep in a timer.
3256 static void e1000e_update_phy_task(struct work_struct
*work
)
3258 struct e1000_adapter
*adapter
= container_of(work
,
3259 struct e1000_adapter
, update_phy_task
);
3260 e1000_get_phy_info(&adapter
->hw
);
3264 * Need to wait a few seconds after link up to get diagnostic information from
3267 static void e1000_update_phy_info(unsigned long data
)
3269 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3270 schedule_work(&adapter
->update_phy_task
);
3274 * e1000e_update_stats - Update the board statistics counters
3275 * @adapter: board private structure
3277 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3279 struct e1000_hw
*hw
= &adapter
->hw
;
3280 struct pci_dev
*pdev
= adapter
->pdev
;
3283 * Prevent stats update while adapter is being reset, or if the pci
3284 * connection is down.
3286 if (adapter
->link_speed
== 0)
3288 if (pci_channel_offline(pdev
))
3291 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3292 adapter
->stats
.gprc
+= er32(GPRC
);
3293 adapter
->stats
.gorc
+= er32(GORCL
);
3294 er32(GORCH
); /* Clear gorc */
3295 adapter
->stats
.bprc
+= er32(BPRC
);
3296 adapter
->stats
.mprc
+= er32(MPRC
);
3297 adapter
->stats
.roc
+= er32(ROC
);
3299 adapter
->stats
.mpc
+= er32(MPC
);
3300 adapter
->stats
.scc
+= er32(SCC
);
3301 adapter
->stats
.ecol
+= er32(ECOL
);
3302 adapter
->stats
.mcc
+= er32(MCC
);
3303 adapter
->stats
.latecol
+= er32(LATECOL
);
3304 adapter
->stats
.dc
+= er32(DC
);
3305 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3306 adapter
->stats
.xontxc
+= er32(XONTXC
);
3307 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3308 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3309 adapter
->stats
.gptc
+= er32(GPTC
);
3310 adapter
->stats
.gotc
+= er32(GOTCL
);
3311 er32(GOTCH
); /* Clear gotc */
3312 adapter
->stats
.rnbc
+= er32(RNBC
);
3313 adapter
->stats
.ruc
+= er32(RUC
);
3315 adapter
->stats
.mptc
+= er32(MPTC
);
3316 adapter
->stats
.bptc
+= er32(BPTC
);
3318 /* used for adaptive IFS */
3320 hw
->mac
.tx_packet_delta
= er32(TPT
);
3321 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3322 hw
->mac
.collision_delta
= er32(COLC
);
3323 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3325 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3326 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3327 if (hw
->mac
.type
!= e1000_82574
)
3328 adapter
->stats
.tncrs
+= er32(TNCRS
);
3329 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3330 adapter
->stats
.tsctc
+= er32(TSCTC
);
3331 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3333 /* Fill out the OS statistics structure */
3334 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3335 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3340 * RLEC on some newer hardware can be incorrect so build
3341 * our own version based on RUC and ROC
3343 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3344 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3345 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3346 adapter
->stats
.cexterr
;
3347 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3349 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3350 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3351 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3354 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3355 adapter
->stats
.latecol
;
3356 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3357 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3358 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3360 /* Tx Dropped needs to be maintained elsewhere */
3362 /* Management Stats */
3363 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3364 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3365 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3369 * e1000_phy_read_status - Update the PHY register status snapshot
3370 * @adapter: board private structure
3372 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3374 struct e1000_hw
*hw
= &adapter
->hw
;
3375 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3378 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3379 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3380 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3381 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3382 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3383 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3384 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3385 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3386 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3387 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3389 e_warn("Error reading PHY register\n");
3392 * Do not read PHY registers if link is not up
3393 * Set values to typical power-on defaults
3395 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3396 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3397 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3399 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3400 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3402 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3403 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3405 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3409 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3411 struct e1000_hw
*hw
= &adapter
->hw
;
3412 u32 ctrl
= er32(CTRL
);
3414 e_info("Link is Up %d Mbps %s, Flow Control: %s\n",
3415 adapter
->link_speed
,
3416 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3417 "Full Duplex" : "Half Duplex",
3418 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3420 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3421 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3424 static bool e1000_has_link(struct e1000_adapter
*adapter
)
3426 struct e1000_hw
*hw
= &adapter
->hw
;
3427 bool link_active
= 0;
3431 * get_link_status is set on LSC (link status) interrupt or
3432 * Rx sequence error interrupt. get_link_status will stay
3433 * false until the check_for_link establishes link
3434 * for copper adapters ONLY
3436 switch (hw
->phy
.media_type
) {
3437 case e1000_media_type_copper
:
3438 if (hw
->mac
.get_link_status
) {
3439 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3440 link_active
= !hw
->mac
.get_link_status
;
3445 case e1000_media_type_fiber
:
3446 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3447 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
3449 case e1000_media_type_internal_serdes
:
3450 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3451 link_active
= adapter
->hw
.mac
.serdes_has_link
;
3454 case e1000_media_type_unknown
:
3458 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
3459 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
3460 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3461 e_info("Gigabit has been disabled, downgrading speed\n");
3467 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3469 /* make sure the receive unit is started */
3470 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3471 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3472 struct e1000_hw
*hw
= &adapter
->hw
;
3473 u32 rctl
= er32(RCTL
);
3474 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3475 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3480 * e1000_watchdog - Timer Call-back
3481 * @data: pointer to adapter cast into an unsigned long
3483 static void e1000_watchdog(unsigned long data
)
3485 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3487 /* Do the rest outside of interrupt context */
3488 schedule_work(&adapter
->watchdog_task
);
3490 /* TODO: make this use queue_delayed_work() */
3493 static void e1000_watchdog_task(struct work_struct
*work
)
3495 struct e1000_adapter
*adapter
= container_of(work
,
3496 struct e1000_adapter
, watchdog_task
);
3497 struct net_device
*netdev
= adapter
->netdev
;
3498 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3499 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3500 struct e1000_hw
*hw
= &adapter
->hw
;
3504 link
= e1000_has_link(adapter
);
3505 if ((netif_carrier_ok(netdev
)) && link
) {
3506 e1000e_enable_receives(adapter
);
3510 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3511 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3512 e1000_update_mng_vlan(adapter
);
3515 if (!netif_carrier_ok(netdev
)) {
3517 /* update snapshot of PHY registers on LSC */
3518 e1000_phy_read_status(adapter
);
3519 mac
->ops
.get_link_up_info(&adapter
->hw
,
3520 &adapter
->link_speed
,
3521 &adapter
->link_duplex
);
3522 e1000_print_link_info(adapter
);
3524 * On supported PHYs, check for duplex mismatch only
3525 * if link has autonegotiated at 10/100 half
3527 if ((hw
->phy
.type
== e1000_phy_igp_3
||
3528 hw
->phy
.type
== e1000_phy_bm
) &&
3529 (hw
->mac
.autoneg
== true) &&
3530 (adapter
->link_speed
== SPEED_10
||
3531 adapter
->link_speed
== SPEED_100
) &&
3532 (adapter
->link_duplex
== HALF_DUPLEX
)) {
3535 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
3537 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
3538 e_info("Autonegotiated half duplex but"
3539 " link partner cannot autoneg. "
3540 " Try forcing full duplex if "
3541 "link gets many collisions.\n");
3545 * tweak tx_queue_len according to speed/duplex
3546 * and adjust the timeout factor
3548 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3549 adapter
->tx_timeout_factor
= 1;
3550 switch (adapter
->link_speed
) {
3553 netdev
->tx_queue_len
= 10;
3554 adapter
->tx_timeout_factor
= 16;
3558 netdev
->tx_queue_len
= 100;
3559 /* maybe add some timeout factor ? */
3564 * workaround: re-program speed mode bit after
3567 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3570 tarc0
= er32(TARC(0));
3571 tarc0
&= ~SPEED_MODE_BIT
;
3572 ew32(TARC(0), tarc0
);
3576 * disable TSO for pcie and 10/100 speeds, to avoid
3577 * some hardware issues
3579 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3580 switch (adapter
->link_speed
) {
3583 e_info("10/100 speed: disabling TSO\n");
3584 netdev
->features
&= ~NETIF_F_TSO
;
3585 netdev
->features
&= ~NETIF_F_TSO6
;
3588 netdev
->features
|= NETIF_F_TSO
;
3589 netdev
->features
|= NETIF_F_TSO6
;
3598 * enable transmits in the hardware, need to do this
3599 * after setting TARC(0)
3602 tctl
|= E1000_TCTL_EN
;
3605 netif_carrier_on(netdev
);
3606 netif_tx_wake_all_queues(netdev
);
3608 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3609 mod_timer(&adapter
->phy_info_timer
,
3610 round_jiffies(jiffies
+ 2 * HZ
));
3613 if (netif_carrier_ok(netdev
)) {
3614 adapter
->link_speed
= 0;
3615 adapter
->link_duplex
= 0;
3616 e_info("Link is Down\n");
3617 netif_carrier_off(netdev
);
3618 netif_tx_stop_all_queues(netdev
);
3619 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3620 mod_timer(&adapter
->phy_info_timer
,
3621 round_jiffies(jiffies
+ 2 * HZ
));
3623 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3624 schedule_work(&adapter
->reset_task
);
3629 e1000e_update_stats(adapter
);
3631 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3632 adapter
->tpt_old
= adapter
->stats
.tpt
;
3633 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3634 adapter
->colc_old
= adapter
->stats
.colc
;
3636 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3637 adapter
->gorc_old
= adapter
->stats
.gorc
;
3638 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3639 adapter
->gotc_old
= adapter
->stats
.gotc
;
3641 e1000e_update_adaptive(&adapter
->hw
);
3643 if (!netif_carrier_ok(netdev
)) {
3644 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3648 * We've lost link, so the controller stops DMA,
3649 * but we've got queued Tx work that's never going
3650 * to get done, so reset controller to flush Tx.
3651 * (Do the reset outside of interrupt context).
3653 adapter
->tx_timeout_count
++;
3654 schedule_work(&adapter
->reset_task
);
3658 /* Cause software interrupt to ensure Rx ring is cleaned */
3659 if (adapter
->msix_entries
)
3660 ew32(ICS
, adapter
->rx_ring
->ims_val
);
3662 ew32(ICS
, E1000_ICS_RXDMT0
);
3664 /* Force detection of hung controller every watchdog period */
3665 adapter
->detect_tx_hung
= 1;
3668 * With 82571 controllers, LAA may be overwritten due to controller
3669 * reset from the other port. Set the appropriate LAA in RAR[0]
3671 if (e1000e_get_laa_state_82571(hw
))
3672 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3674 /* Reset the timer */
3675 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3676 mod_timer(&adapter
->watchdog_timer
,
3677 round_jiffies(jiffies
+ 2 * HZ
));
3680 #define E1000_TX_FLAGS_CSUM 0x00000001
3681 #define E1000_TX_FLAGS_VLAN 0x00000002
3682 #define E1000_TX_FLAGS_TSO 0x00000004
3683 #define E1000_TX_FLAGS_IPV4 0x00000008
3684 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3685 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3687 static int e1000_tso(struct e1000_adapter
*adapter
,
3688 struct sk_buff
*skb
)
3690 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3691 struct e1000_context_desc
*context_desc
;
3692 struct e1000_buffer
*buffer_info
;
3695 u16 ipcse
= 0, tucse
, mss
;
3696 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3699 if (skb_is_gso(skb
)) {
3700 if (skb_header_cloned(skb
)) {
3701 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3706 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3707 mss
= skb_shinfo(skb
)->gso_size
;
3708 if (skb
->protocol
== htons(ETH_P_IP
)) {
3709 struct iphdr
*iph
= ip_hdr(skb
);
3712 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3716 cmd_length
= E1000_TXD_CMD_IP
;
3717 ipcse
= skb_transport_offset(skb
) - 1;
3718 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3719 ipv6_hdr(skb
)->payload_len
= 0;
3720 tcp_hdr(skb
)->check
=
3721 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3722 &ipv6_hdr(skb
)->daddr
,
3726 ipcss
= skb_network_offset(skb
);
3727 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3728 tucss
= skb_transport_offset(skb
);
3729 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3732 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3733 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3735 i
= tx_ring
->next_to_use
;
3736 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3737 buffer_info
= &tx_ring
->buffer_info
[i
];
3739 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3740 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3741 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3742 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3743 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3744 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3745 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3746 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3747 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3749 buffer_info
->time_stamp
= jiffies
;
3750 buffer_info
->next_to_watch
= i
;
3753 if (i
== tx_ring
->count
)
3755 tx_ring
->next_to_use
= i
;
3763 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3765 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3766 struct e1000_context_desc
*context_desc
;
3767 struct e1000_buffer
*buffer_info
;
3770 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
3772 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
3775 switch (skb
->protocol
) {
3776 case __constant_htons(ETH_P_IP
):
3777 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3778 cmd_len
|= E1000_TXD_CMD_TCP
;
3780 case __constant_htons(ETH_P_IPV6
):
3781 /* XXX not handling all IPV6 headers */
3782 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3783 cmd_len
|= E1000_TXD_CMD_TCP
;
3786 if (unlikely(net_ratelimit()))
3787 e_warn("checksum_partial proto=%x!\n", skb
->protocol
);
3791 css
= skb_transport_offset(skb
);
3793 i
= tx_ring
->next_to_use
;
3794 buffer_info
= &tx_ring
->buffer_info
[i
];
3795 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3797 context_desc
->lower_setup
.ip_config
= 0;
3798 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3799 context_desc
->upper_setup
.tcp_fields
.tucso
=
3800 css
+ skb
->csum_offset
;
3801 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3802 context_desc
->tcp_seg_setup
.data
= 0;
3803 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
3805 buffer_info
->time_stamp
= jiffies
;
3806 buffer_info
->next_to_watch
= i
;
3809 if (i
== tx_ring
->count
)
3811 tx_ring
->next_to_use
= i
;
3816 #define E1000_MAX_PER_TXD 8192
3817 #define E1000_MAX_TXD_PWR 12
3819 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3820 struct sk_buff
*skb
, unsigned int first
,
3821 unsigned int max_per_txd
, unsigned int nr_frags
,
3824 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3825 struct e1000_buffer
*buffer_info
;
3826 unsigned int len
= skb
->len
- skb
->data_len
;
3827 unsigned int offset
= 0, size
, count
= 0, i
;
3830 i
= tx_ring
->next_to_use
;
3833 buffer_info
= &tx_ring
->buffer_info
[i
];
3834 size
= min(len
, max_per_txd
);
3836 /* Workaround for premature desc write-backs
3837 * in TSO mode. Append 4-byte sentinel desc */
3838 if (mss
&& !nr_frags
&& size
== len
&& size
> 8)
3841 buffer_info
->length
= size
;
3842 /* set time_stamp *before* dma to help avoid a possible race */
3843 buffer_info
->time_stamp
= jiffies
;
3845 pci_map_single(adapter
->pdev
,
3849 if (pci_dma_mapping_error(adapter
->pdev
, buffer_info
->dma
)) {
3850 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3851 adapter
->tx_dma_failed
++;
3854 buffer_info
->next_to_watch
= i
;
3860 if (i
== tx_ring
->count
)
3864 for (f
= 0; f
< nr_frags
; f
++) {
3865 struct skb_frag_struct
*frag
;
3867 frag
= &skb_shinfo(skb
)->frags
[f
];
3869 offset
= frag
->page_offset
;
3872 buffer_info
= &tx_ring
->buffer_info
[i
];
3873 size
= min(len
, max_per_txd
);
3874 /* Workaround for premature desc write-backs
3875 * in TSO mode. Append 4-byte sentinel desc */
3876 if (mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8)
3879 buffer_info
->length
= size
;
3880 buffer_info
->time_stamp
= jiffies
;
3882 pci_map_page(adapter
->pdev
,
3887 if (pci_dma_mapping_error(adapter
->pdev
,
3888 buffer_info
->dma
)) {
3889 dev_err(&adapter
->pdev
->dev
,
3890 "TX DMA page map failed\n");
3891 adapter
->tx_dma_failed
++;
3895 buffer_info
->next_to_watch
= i
;
3902 if (i
== tx_ring
->count
)
3908 i
= tx_ring
->count
- 1;
3912 tx_ring
->buffer_info
[i
].skb
= skb
;
3913 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3918 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3919 int tx_flags
, int count
)
3921 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3922 struct e1000_tx_desc
*tx_desc
= NULL
;
3923 struct e1000_buffer
*buffer_info
;
3924 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3927 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3928 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3930 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3932 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3933 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3936 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3937 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3938 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3941 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3942 txd_lower
|= E1000_TXD_CMD_VLE
;
3943 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3946 i
= tx_ring
->next_to_use
;
3949 buffer_info
= &tx_ring
->buffer_info
[i
];
3950 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3951 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3952 tx_desc
->lower
.data
=
3953 cpu_to_le32(txd_lower
| buffer_info
->length
);
3954 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3957 if (i
== tx_ring
->count
)
3961 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3964 * Force memory writes to complete before letting h/w
3965 * know there are new descriptors to fetch. (Only
3966 * applicable for weak-ordered memory model archs,
3971 tx_ring
->next_to_use
= i
;
3972 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3974 * we need this if more than one processor can write to our tail
3975 * at a time, it synchronizes IO on IA64/Altix systems
3980 #define MINIMUM_DHCP_PACKET_SIZE 282
3981 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3982 struct sk_buff
*skb
)
3984 struct e1000_hw
*hw
= &adapter
->hw
;
3987 if (vlan_tx_tag_present(skb
)) {
3988 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3989 && (adapter
->hw
.mng_cookie
.status
&
3990 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3994 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3997 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
4001 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
4004 if (ip
->protocol
!= IPPROTO_UDP
)
4007 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
4008 if (ntohs(udp
->dest
) != 67)
4011 offset
= (u8
*)udp
+ 8 - skb
->data
;
4012 length
= skb
->len
- offset
;
4013 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4019 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4021 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4023 netif_stop_queue(netdev
);
4025 * Herbert's original patch had:
4026 * smp_mb__after_netif_stop_queue();
4027 * but since that doesn't exist yet, just open code it.
4032 * We need to check again in a case another CPU has just
4033 * made room available.
4035 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4039 netif_start_queue(netdev
);
4040 ++adapter
->restart_queue
;
4044 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4046 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4048 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4050 return __e1000_maybe_stop_tx(netdev
, size
);
4053 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4054 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
4056 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4057 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4059 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4060 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4061 unsigned int tx_flags
= 0;
4062 unsigned int len
= skb
->len
- skb
->data_len
;
4063 unsigned long irq_flags
;
4064 unsigned int nr_frags
;
4070 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4071 dev_kfree_skb_any(skb
);
4072 return NETDEV_TX_OK
;
4075 if (skb
->len
<= 0) {
4076 dev_kfree_skb_any(skb
);
4077 return NETDEV_TX_OK
;
4080 mss
= skb_shinfo(skb
)->gso_size
;
4082 * The controller does a simple calculation to
4083 * make sure there is enough room in the FIFO before
4084 * initiating the DMA for each buffer. The calc is:
4085 * 4 = ceil(buffer len/mss). To make sure we don't
4086 * overrun the FIFO, adjust the max buffer len if mss
4091 max_per_txd
= min(mss
<< 2, max_per_txd
);
4092 max_txd_pwr
= fls(max_per_txd
) - 1;
4095 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4096 * points to just header, pull a few bytes of payload from
4097 * frags into skb->data
4099 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4101 * we do this workaround for ES2LAN, but it is un-necessary,
4102 * avoiding it could save a lot of cycles
4104 if (skb
->data_len
&& (hdr_len
== len
)) {
4105 unsigned int pull_size
;
4107 pull_size
= min((unsigned int)4, skb
->data_len
);
4108 if (!__pskb_pull_tail(skb
, pull_size
)) {
4109 e_err("__pskb_pull_tail failed.\n");
4110 dev_kfree_skb_any(skb
);
4111 return NETDEV_TX_OK
;
4113 len
= skb
->len
- skb
->data_len
;
4117 /* reserve a descriptor for the offload context */
4118 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4122 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4124 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4125 for (f
= 0; f
< nr_frags
; f
++)
4126 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4129 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4130 e1000_transfer_dhcp_info(adapter
, skb
);
4132 if (!spin_trylock_irqsave(&adapter
->tx_queue_lock
, irq_flags
))
4133 /* Collision - tell upper layer to requeue */
4134 return NETDEV_TX_LOCKED
;
4137 * need: count + 2 desc gap to keep tail from touching
4138 * head, otherwise try next time
4140 if (e1000_maybe_stop_tx(netdev
, count
+ 2)) {
4141 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4142 return NETDEV_TX_BUSY
;
4145 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4146 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4147 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4150 first
= tx_ring
->next_to_use
;
4152 tso
= e1000_tso(adapter
, skb
);
4154 dev_kfree_skb_any(skb
);
4155 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4156 return NETDEV_TX_OK
;
4160 tx_flags
|= E1000_TX_FLAGS_TSO
;
4161 else if (e1000_tx_csum(adapter
, skb
))
4162 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4165 * Old method was to assume IPv4 packet by default if TSO was enabled.
4166 * 82571 hardware supports TSO capabilities for IPv6 as well...
4167 * no longer assume, we must.
4169 if (skb
->protocol
== htons(ETH_P_IP
))
4170 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4172 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4174 /* handle pci_map_single() error in e1000_tx_map */
4175 dev_kfree_skb_any(skb
);
4176 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4177 return NETDEV_TX_OK
;
4180 e1000_tx_queue(adapter
, tx_flags
, count
);
4182 netdev
->trans_start
= jiffies
;
4184 /* Make sure there is space in the ring for the next send. */
4185 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4187 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
4188 return NETDEV_TX_OK
;
4192 * e1000_tx_timeout - Respond to a Tx Hang
4193 * @netdev: network interface device structure
4195 static void e1000_tx_timeout(struct net_device
*netdev
)
4197 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4199 /* Do the reset outside of interrupt context */
4200 adapter
->tx_timeout_count
++;
4201 schedule_work(&adapter
->reset_task
);
4204 static void e1000_reset_task(struct work_struct
*work
)
4206 struct e1000_adapter
*adapter
;
4207 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4209 e1000e_reinit_locked(adapter
);
4213 * e1000_get_stats - Get System Network Statistics
4214 * @netdev: network interface device structure
4216 * Returns the address of the device statistics structure.
4217 * The statistics are actually updated from the timer callback.
4219 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4221 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4223 /* only return the current stats */
4224 return &adapter
->net_stats
;
4228 * e1000_change_mtu - Change the Maximum Transfer Unit
4229 * @netdev: network interface device structure
4230 * @new_mtu: new value for maximum frame size
4232 * Returns 0 on success, negative on failure
4234 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4236 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4237 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4239 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4240 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
4241 e_err("Invalid MTU setting\n");
4245 /* Jumbo frame size limits */
4246 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
4247 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4248 e_err("Jumbo Frames not supported.\n");
4251 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
4252 e_err("Jumbo Frames not supported.\n");
4257 #define MAX_STD_JUMBO_FRAME_SIZE 9234
4258 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
4259 e_err("MTU > 9216 not supported.\n");
4263 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4265 /* e1000e_down has a dependency on max_frame_size */
4266 adapter
->max_frame_size
= max_frame
;
4267 if (netif_running(netdev
))
4268 e1000e_down(adapter
);
4271 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4272 * means we reserve 2 more, this pushes us to allocate from the next
4274 * i.e. RXBUFFER_2048 --> size-4096 slab
4275 * However with the new *_jumbo_rx* routines, jumbo receives will use
4279 if (max_frame
<= 256)
4280 adapter
->rx_buffer_len
= 256;
4281 else if (max_frame
<= 512)
4282 adapter
->rx_buffer_len
= 512;
4283 else if (max_frame
<= 1024)
4284 adapter
->rx_buffer_len
= 1024;
4285 else if (max_frame
<= 2048)
4286 adapter
->rx_buffer_len
= 2048;
4288 adapter
->rx_buffer_len
= 4096;
4290 /* adjust allocation if LPE protects us, and we aren't using SBP */
4291 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4292 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4293 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4296 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4297 netdev
->mtu
= new_mtu
;
4299 if (netif_running(netdev
))
4302 e1000e_reset(adapter
);
4304 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4309 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4312 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4313 struct mii_ioctl_data
*data
= if_mii(ifr
);
4315 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4320 data
->phy_id
= adapter
->hw
.phy
.addr
;
4323 if (!capable(CAP_NET_ADMIN
))
4325 switch (data
->reg_num
& 0x1F) {
4327 data
->val_out
= adapter
->phy_regs
.bmcr
;
4330 data
->val_out
= adapter
->phy_regs
.bmsr
;
4333 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4336 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4339 data
->val_out
= adapter
->phy_regs
.advertise
;
4342 data
->val_out
= adapter
->phy_regs
.lpa
;
4345 data
->val_out
= adapter
->phy_regs
.expansion
;
4348 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4351 data
->val_out
= adapter
->phy_regs
.stat1000
;
4354 data
->val_out
= adapter
->phy_regs
.estatus
;
4367 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4373 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4379 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4381 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4382 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4383 struct e1000_hw
*hw
= &adapter
->hw
;
4384 u32 ctrl
, ctrl_ext
, rctl
, status
;
4385 u32 wufc
= adapter
->wol
;
4388 netif_device_detach(netdev
);
4390 if (netif_running(netdev
)) {
4391 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4392 e1000e_down(adapter
);
4393 e1000_free_irq(adapter
);
4395 e1000e_reset_interrupt_capability(adapter
);
4397 retval
= pci_save_state(pdev
);
4401 status
= er32(STATUS
);
4402 if (status
& E1000_STATUS_LU
)
4403 wufc
&= ~E1000_WUFC_LNKC
;
4406 e1000_setup_rctl(adapter
);
4407 e1000_set_multi(netdev
);
4409 /* turn on all-multi mode if wake on multicast is enabled */
4410 if (wufc
& E1000_WUFC_MC
) {
4412 rctl
|= E1000_RCTL_MPE
;
4417 /* advertise wake from D3Cold */
4418 #define E1000_CTRL_ADVD3WUC 0x00100000
4419 /* phy power management enable */
4420 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4421 ctrl
|= E1000_CTRL_ADVD3WUC
|
4422 E1000_CTRL_EN_PHY_PWR_MGMT
;
4425 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
4426 adapter
->hw
.phy
.media_type
==
4427 e1000_media_type_internal_serdes
) {
4428 /* keep the laser running in D3 */
4429 ctrl_ext
= er32(CTRL_EXT
);
4430 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4431 ew32(CTRL_EXT
, ctrl_ext
);
4434 if (adapter
->flags
& FLAG_IS_ICH
)
4435 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
4437 /* Allow time for pending master requests to run */
4438 e1000e_disable_pcie_master(&adapter
->hw
);
4440 ew32(WUC
, E1000_WUC_PME_EN
);
4442 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4443 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4447 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4448 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4451 /* make sure adapter isn't asleep if manageability is enabled */
4452 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
) {
4453 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4454 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4457 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
4458 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
4461 * Release control of h/w to f/w. If f/w is AMT enabled, this
4462 * would have already happened in close and is redundant.
4464 e1000_release_hw_control(adapter
);
4466 pci_disable_device(pdev
);
4468 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4473 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
4479 * 82573 workaround - disable L1 ASPM on mobile chipsets
4481 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4482 * resulting in lost data or garbage information on the pci-e link
4483 * level. This could result in (false) bad EEPROM checksum errors,
4484 * long ping times (up to 2s) or even a system freeze/hang.
4486 * Unfortunately this feature saves about 1W power consumption when
4489 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
4490 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
4492 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
4494 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
4499 static int e1000_resume(struct pci_dev
*pdev
)
4501 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4502 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4503 struct e1000_hw
*hw
= &adapter
->hw
;
4506 pci_set_power_state(pdev
, PCI_D0
);
4507 pci_restore_state(pdev
);
4508 e1000e_disable_l1aspm(pdev
);
4510 err
= pci_enable_device_mem(pdev
);
4513 "Cannot enable PCI device from suspend\n");
4517 pci_set_master(pdev
);
4519 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4520 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4522 e1000e_set_interrupt_capability(adapter
);
4523 if (netif_running(netdev
)) {
4524 err
= e1000_request_irq(adapter
);
4529 e1000e_power_up_phy(adapter
);
4530 e1000e_reset(adapter
);
4533 e1000_init_manageability(adapter
);
4535 if (netif_running(netdev
))
4538 netif_device_attach(netdev
);
4541 * If the controller has AMT, do not set DRV_LOAD until the interface
4542 * is up. For all other cases, let the f/w know that the h/w is now
4543 * under the control of the driver.
4545 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4546 e1000_get_hw_control(adapter
);
4552 static void e1000_shutdown(struct pci_dev
*pdev
)
4554 e1000_suspend(pdev
, PMSG_SUSPEND
);
4557 #ifdef CONFIG_NET_POLL_CONTROLLER
4559 * Polling 'interrupt' - used by things like netconsole to send skbs
4560 * without having to re-enable interrupts. It's not called while
4561 * the interrupt routine is executing.
4563 static void e1000_netpoll(struct net_device
*netdev
)
4565 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4567 disable_irq(adapter
->pdev
->irq
);
4568 e1000_intr(adapter
->pdev
->irq
, netdev
);
4570 enable_irq(adapter
->pdev
->irq
);
4575 * e1000_io_error_detected - called when PCI error is detected
4576 * @pdev: Pointer to PCI device
4577 * @state: The current pci connection state
4579 * This function is called after a PCI bus error affecting
4580 * this device has been detected.
4582 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4583 pci_channel_state_t state
)
4585 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4586 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4588 netif_device_detach(netdev
);
4590 if (netif_running(netdev
))
4591 e1000e_down(adapter
);
4592 pci_disable_device(pdev
);
4594 /* Request a slot slot reset. */
4595 return PCI_ERS_RESULT_NEED_RESET
;
4599 * e1000_io_slot_reset - called after the pci bus has been reset.
4600 * @pdev: Pointer to PCI device
4602 * Restart the card from scratch, as if from a cold-boot. Implementation
4603 * resembles the first-half of the e1000_resume routine.
4605 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4607 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4608 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4609 struct e1000_hw
*hw
= &adapter
->hw
;
4612 e1000e_disable_l1aspm(pdev
);
4613 err
= pci_enable_device_mem(pdev
);
4616 "Cannot re-enable PCI device after reset.\n");
4617 return PCI_ERS_RESULT_DISCONNECT
;
4619 pci_set_master(pdev
);
4620 pci_restore_state(pdev
);
4622 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4623 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4625 e1000e_reset(adapter
);
4628 return PCI_ERS_RESULT_RECOVERED
;
4632 * e1000_io_resume - called when traffic can start flowing again.
4633 * @pdev: Pointer to PCI device
4635 * This callback is called when the error recovery driver tells us that
4636 * its OK to resume normal operation. Implementation resembles the
4637 * second-half of the e1000_resume routine.
4639 static void e1000_io_resume(struct pci_dev
*pdev
)
4641 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4642 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4644 e1000_init_manageability(adapter
);
4646 if (netif_running(netdev
)) {
4647 if (e1000e_up(adapter
)) {
4649 "can't bring device back up after reset\n");
4654 netif_device_attach(netdev
);
4657 * If the controller has AMT, do not set DRV_LOAD until the interface
4658 * is up. For all other cases, let the f/w know that the h/w is now
4659 * under the control of the driver.
4661 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4662 e1000_get_hw_control(adapter
);
4666 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4668 struct e1000_hw
*hw
= &adapter
->hw
;
4669 struct net_device
*netdev
= adapter
->netdev
;
4672 /* print bus type/speed/width info */
4673 e_info("(PCI Express:2.5GB/s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n",
4675 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4678 netdev
->dev_addr
[0], netdev
->dev_addr
[1],
4679 netdev
->dev_addr
[2], netdev
->dev_addr
[3],
4680 netdev
->dev_addr
[4], netdev
->dev_addr
[5]);
4681 e_info("Intel(R) PRO/%s Network Connection\n",
4682 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4683 e1000e_read_pba_num(hw
, &pba_num
);
4684 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4685 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4688 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4690 struct e1000_hw
*hw
= &adapter
->hw
;
4694 if (hw
->mac
.type
!= e1000_82573
)
4697 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4698 if (!(le16_to_cpu(buf
) & (1 << 0))) {
4699 /* Deep Smart Power Down (DSPD) */
4700 dev_warn(&adapter
->pdev
->dev
,
4701 "Warning: detected DSPD enabled in EEPROM\n");
4704 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4705 if (le16_to_cpu(buf
) & (3 << 2)) {
4707 dev_warn(&adapter
->pdev
->dev
,
4708 "Warning: detected ASPM enabled in EEPROM\n");
4713 * e1000_probe - Device Initialization Routine
4714 * @pdev: PCI device information struct
4715 * @ent: entry in e1000_pci_tbl
4717 * Returns 0 on success, negative on failure
4719 * e1000_probe initializes an adapter identified by a pci_dev structure.
4720 * The OS initialization, configuring of the adapter private structure,
4721 * and a hardware reset occur.
4723 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4724 const struct pci_device_id
*ent
)
4726 struct net_device
*netdev
;
4727 struct e1000_adapter
*adapter
;
4728 struct e1000_hw
*hw
;
4729 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4730 resource_size_t mmio_start
, mmio_len
;
4731 resource_size_t flash_start
, flash_len
;
4733 static int cards_found
;
4734 int i
, err
, pci_using_dac
;
4735 u16 eeprom_data
= 0;
4736 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4738 e1000e_disable_l1aspm(pdev
);
4740 err
= pci_enable_device_mem(pdev
);
4745 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
4747 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
4751 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
4753 err
= pci_set_consistent_dma_mask(pdev
,
4756 dev_err(&pdev
->dev
, "No usable DMA "
4757 "configuration, aborting\n");
4763 err
= pci_request_selected_regions(pdev
,
4764 pci_select_bars(pdev
, IORESOURCE_MEM
),
4765 e1000e_driver_name
);
4769 pci_set_master(pdev
);
4770 pci_save_state(pdev
);
4773 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4775 goto err_alloc_etherdev
;
4777 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4779 pci_set_drvdata(pdev
, netdev
);
4780 adapter
= netdev_priv(netdev
);
4782 adapter
->netdev
= netdev
;
4783 adapter
->pdev
= pdev
;
4785 adapter
->pba
= ei
->pba
;
4786 adapter
->flags
= ei
->flags
;
4787 adapter
->flags2
= ei
->flags2
;
4788 adapter
->hw
.adapter
= adapter
;
4789 adapter
->hw
.mac
.type
= ei
->mac
;
4790 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4792 mmio_start
= pci_resource_start(pdev
, 0);
4793 mmio_len
= pci_resource_len(pdev
, 0);
4796 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4797 if (!adapter
->hw
.hw_addr
)
4800 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4801 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4802 flash_start
= pci_resource_start(pdev
, 1);
4803 flash_len
= pci_resource_len(pdev
, 1);
4804 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4805 if (!adapter
->hw
.flash_address
)
4809 /* construct the net_device struct */
4810 netdev
->open
= &e1000_open
;
4811 netdev
->stop
= &e1000_close
;
4812 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
4813 netdev
->get_stats
= &e1000_get_stats
;
4814 netdev
->set_multicast_list
= &e1000_set_multi
;
4815 netdev
->set_mac_address
= &e1000_set_mac
;
4816 netdev
->change_mtu
= &e1000_change_mtu
;
4817 netdev
->do_ioctl
= &e1000_ioctl
;
4818 e1000e_set_ethtool_ops(netdev
);
4819 netdev
->tx_timeout
= &e1000_tx_timeout
;
4820 netdev
->watchdog_timeo
= 5 * HZ
;
4821 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4822 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
4823 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
4824 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
4825 #ifdef CONFIG_NET_POLL_CONTROLLER
4826 netdev
->poll_controller
= e1000_netpoll
;
4828 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4830 netdev
->mem_start
= mmio_start
;
4831 netdev
->mem_end
= mmio_start
+ mmio_len
;
4833 adapter
->bd_number
= cards_found
++;
4835 e1000e_check_options(adapter
);
4837 /* setup adapter struct */
4838 err
= e1000_sw_init(adapter
);
4844 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4845 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4846 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4848 err
= ei
->get_variants(adapter
);
4852 if ((adapter
->flags
& FLAG_IS_ICH
) &&
4853 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
4854 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
4856 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4858 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4860 /* Copper options */
4861 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4862 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4863 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4864 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4867 if (e1000_check_reset_block(&adapter
->hw
))
4868 e_info("PHY reset is blocked due to SOL/IDER session.\n");
4870 netdev
->features
= NETIF_F_SG
|
4872 NETIF_F_HW_VLAN_TX
|
4875 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4876 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4878 netdev
->features
|= NETIF_F_TSO
;
4879 netdev
->features
|= NETIF_F_TSO6
;
4881 netdev
->vlan_features
|= NETIF_F_TSO
;
4882 netdev
->vlan_features
|= NETIF_F_TSO6
;
4883 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4884 netdev
->vlan_features
|= NETIF_F_SG
;
4887 netdev
->features
|= NETIF_F_HIGHDMA
;
4890 * We should not be using LLTX anymore, but we are still Tx faster with
4893 netdev
->features
|= NETIF_F_LLTX
;
4895 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4896 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4899 * before reading the NVM, reset the controller to
4900 * put the device in a known good starting state
4902 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4905 * systems with ASPM and others may see the checksum fail on the first
4906 * attempt. Let's give it a few tries
4909 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4912 e_err("The NVM Checksum Is Not Valid\n");
4918 e1000_eeprom_checks(adapter
);
4920 /* copy the MAC address out of the NVM */
4921 if (e1000e_read_mac_addr(&adapter
->hw
))
4922 e_err("NVM Read Error while reading MAC address\n");
4924 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4925 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4927 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4928 e_err("Invalid MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
4929 netdev
->perm_addr
[0], netdev
->perm_addr
[1],
4930 netdev
->perm_addr
[2], netdev
->perm_addr
[3],
4931 netdev
->perm_addr
[4], netdev
->perm_addr
[5]);
4936 init_timer(&adapter
->watchdog_timer
);
4937 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4938 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4940 init_timer(&adapter
->phy_info_timer
);
4941 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4942 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4944 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4945 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4946 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
4947 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
4949 /* Initialize link parameters. User can change them with ethtool */
4950 adapter
->hw
.mac
.autoneg
= 1;
4951 adapter
->fc_autoneg
= 1;
4952 adapter
->hw
.fc
.original_type
= e1000_fc_default
;
4953 adapter
->hw
.fc
.type
= e1000_fc_default
;
4954 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4956 /* ring size defaults */
4957 adapter
->rx_ring
->count
= 256;
4958 adapter
->tx_ring
->count
= 256;
4961 * Initial Wake on LAN setting - If APM wake is enabled in
4962 * the EEPROM, enable the ACPI Magic Packet filter
4964 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4965 /* APME bit in EEPROM is mapped to WUC.APME */
4966 eeprom_data
= er32(WUC
);
4967 eeprom_apme_mask
= E1000_WUC_APME
;
4968 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
4969 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
4970 (adapter
->hw
.bus
.func
== 1))
4971 e1000_read_nvm(&adapter
->hw
,
4972 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
4974 e1000_read_nvm(&adapter
->hw
,
4975 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
4978 /* fetch WoL from EEPROM */
4979 if (eeprom_data
& eeprom_apme_mask
)
4980 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
4983 * now that we have the eeprom settings, apply the special cases
4984 * where the eeprom may be wrong or the board simply won't support
4985 * wake on lan on a particular port
4987 if (!(adapter
->flags
& FLAG_HAS_WOL
))
4988 adapter
->eeprom_wol
= 0;
4990 /* initialize the wol settings based on the eeprom settings */
4991 adapter
->wol
= adapter
->eeprom_wol
;
4992 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
4994 /* reset the hardware with the new settings */
4995 e1000e_reset(adapter
);
4998 * If the controller has AMT, do not set DRV_LOAD until the interface
4999 * is up. For all other cases, let the f/w know that the h/w is now
5000 * under the control of the driver.
5002 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5003 e1000_get_hw_control(adapter
);
5005 /* tell the stack to leave us alone until e1000_open() is called */
5006 netif_carrier_off(netdev
);
5007 netif_tx_stop_all_queues(netdev
);
5009 strcpy(netdev
->name
, "eth%d");
5010 err
= register_netdev(netdev
);
5014 e1000_print_device_info(adapter
);
5019 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5020 e1000_release_hw_control(adapter
);
5022 if (!e1000_check_reset_block(&adapter
->hw
))
5023 e1000_phy_hw_reset(&adapter
->hw
);
5026 kfree(adapter
->tx_ring
);
5027 kfree(adapter
->rx_ring
);
5029 if (adapter
->hw
.flash_address
)
5030 iounmap(adapter
->hw
.flash_address
);
5031 e1000e_reset_interrupt_capability(adapter
);
5033 iounmap(adapter
->hw
.hw_addr
);
5035 free_netdev(netdev
);
5037 pci_release_selected_regions(pdev
,
5038 pci_select_bars(pdev
, IORESOURCE_MEM
));
5041 pci_disable_device(pdev
);
5046 * e1000_remove - Device Removal Routine
5047 * @pdev: PCI device information struct
5049 * e1000_remove is called by the PCI subsystem to alert the driver
5050 * that it should release a PCI device. The could be caused by a
5051 * Hot-Plug event, or because the driver is going to be removed from
5054 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5056 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5057 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5060 * flush_scheduled work may reschedule our watchdog task, so
5061 * explicitly disable watchdog tasks from being rescheduled
5063 set_bit(__E1000_DOWN
, &adapter
->state
);
5064 del_timer_sync(&adapter
->watchdog_timer
);
5065 del_timer_sync(&adapter
->phy_info_timer
);
5067 flush_scheduled_work();
5070 * Release control of h/w to f/w. If f/w is AMT enabled, this
5071 * would have already happened in close and is redundant.
5073 e1000_release_hw_control(adapter
);
5075 unregister_netdev(netdev
);
5077 if (!e1000_check_reset_block(&adapter
->hw
))
5078 e1000_phy_hw_reset(&adapter
->hw
);
5080 e1000e_reset_interrupt_capability(adapter
);
5081 kfree(adapter
->tx_ring
);
5082 kfree(adapter
->rx_ring
);
5084 iounmap(adapter
->hw
.hw_addr
);
5085 if (adapter
->hw
.flash_address
)
5086 iounmap(adapter
->hw
.flash_address
);
5087 pci_release_selected_regions(pdev
,
5088 pci_select_bars(pdev
, IORESOURCE_MEM
));
5090 free_netdev(netdev
);
5092 pci_disable_device(pdev
);
5095 /* PCI Error Recovery (ERS) */
5096 static struct pci_error_handlers e1000_err_handler
= {
5097 .error_detected
= e1000_io_error_detected
,
5098 .slot_reset
= e1000_io_slot_reset
,
5099 .resume
= e1000_io_resume
,
5102 static struct pci_device_id e1000_pci_tbl
[] = {
5103 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5104 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5105 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5106 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5107 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5108 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5109 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5110 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5111 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5113 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5114 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5115 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5116 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5118 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5119 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5120 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5122 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5124 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5125 board_80003es2lan
},
5126 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5127 board_80003es2lan
},
5128 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5129 board_80003es2lan
},
5130 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5131 board_80003es2lan
},
5133 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5134 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5135 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5136 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5137 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5138 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5139 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5141 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5142 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5143 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5144 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5145 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5146 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5147 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5148 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5149 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5151 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5152 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5153 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5155 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5156 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5158 { } /* terminate list */
5160 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
5162 /* PCI Device API Driver */
5163 static struct pci_driver e1000_driver
= {
5164 .name
= e1000e_driver_name
,
5165 .id_table
= e1000_pci_tbl
,
5166 .probe
= e1000_probe
,
5167 .remove
= __devexit_p(e1000_remove
),
5169 /* Power Management Hooks */
5170 .suspend
= e1000_suspend
,
5171 .resume
= e1000_resume
,
5173 .shutdown
= e1000_shutdown
,
5174 .err_handler
= &e1000_err_handler
5178 * e1000_init_module - Driver Registration Routine
5180 * e1000_init_module is the first routine called when the driver is
5181 * loaded. All it does is register with the PCI subsystem.
5183 static int __init
e1000_init_module(void)
5186 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
5187 e1000e_driver_name
, e1000e_driver_version
);
5188 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
5189 e1000e_driver_name
);
5190 ret
= pci_register_driver(&e1000_driver
);
5191 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
5192 PM_QOS_DEFAULT_VALUE
);
5196 module_init(e1000_init_module
);
5199 * e1000_exit_module - Driver Exit Cleanup Routine
5201 * e1000_exit_module is called just before the driver is removed
5204 static void __exit
e1000_exit_module(void)
5206 pci_unregister_driver(&e1000_driver
);
5207 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
5209 module_exit(e1000_exit_module
);
5212 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5213 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5214 MODULE_LICENSE("GPL");
5215 MODULE_VERSION(DRV_VERSION
);