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-k2"
51 char e1000e_driver_name
[] = "e1000e";
52 const char e1000e_driver_version
[] = DRV_VERSION
;
54 static const struct e1000_info
*e1000_info_tbl
[] = {
55 [board_82571
] = &e1000_82571_info
,
56 [board_82572
] = &e1000_82572_info
,
57 [board_82573
] = &e1000_82573_info
,
58 [board_80003es2lan
] = &e1000_es2_info
,
59 [board_ich8lan
] = &e1000_ich8_info
,
60 [board_ich9lan
] = &e1000_ich9_info
,
65 * e1000_get_hw_dev_name - return device name string
66 * used by hardware layer to print debugging information
68 char *e1000e_get_hw_dev_name(struct e1000_hw
*hw
)
70 return hw
->adapter
->netdev
->name
;
75 * e1000_desc_unused - calculate if we have unused descriptors
77 static int e1000_desc_unused(struct e1000_ring
*ring
)
79 if (ring
->next_to_clean
> ring
->next_to_use
)
80 return ring
->next_to_clean
- ring
->next_to_use
- 1;
82 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
86 * e1000_receive_skb - helper function to handle Rx indications
87 * @adapter: board private structure
88 * @status: descriptor status field as written by hardware
89 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
90 * @skb: pointer to sk_buff to be indicated to stack
92 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
93 struct net_device
*netdev
,
95 u8 status
, __le16 vlan
)
97 skb
->protocol
= eth_type_trans(skb
, netdev
);
99 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
100 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
103 netif_receive_skb(skb
);
105 netdev
->last_rx
= jiffies
;
109 * e1000_rx_checksum - Receive Checksum Offload for 82543
110 * @adapter: board private structure
111 * @status_err: receive descriptor status and error fields
112 * @csum: receive descriptor csum field
113 * @sk_buff: socket buffer with received data
115 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
116 u32 csum
, struct sk_buff
*skb
)
118 u16 status
= (u16
)status_err
;
119 u8 errors
= (u8
)(status_err
>> 24);
120 skb
->ip_summed
= CHECKSUM_NONE
;
122 /* Ignore Checksum bit is set */
123 if (status
& E1000_RXD_STAT_IXSM
)
125 /* TCP/UDP checksum error bit is set */
126 if (errors
& E1000_RXD_ERR_TCPE
) {
127 /* let the stack verify checksum errors */
128 adapter
->hw_csum_err
++;
132 /* TCP/UDP Checksum has not been calculated */
133 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
136 /* It must be a TCP or UDP packet with a valid checksum */
137 if (status
& E1000_RXD_STAT_TCPCS
) {
138 /* TCP checksum is good */
139 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
142 * IP fragment with UDP payload
143 * Hardware complements the payload checksum, so we undo it
144 * and then put the value in host order for further stack use.
146 __sum16 sum
= (__force __sum16
)htons(csum
);
147 skb
->csum
= csum_unfold(~sum
);
148 skb
->ip_summed
= CHECKSUM_COMPLETE
;
150 adapter
->hw_csum_good
++;
154 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
155 * @adapter: address of board private structure
157 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
160 struct net_device
*netdev
= adapter
->netdev
;
161 struct pci_dev
*pdev
= adapter
->pdev
;
162 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
163 struct e1000_rx_desc
*rx_desc
;
164 struct e1000_buffer
*buffer_info
;
167 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
169 i
= rx_ring
->next_to_use
;
170 buffer_info
= &rx_ring
->buffer_info
[i
];
172 while (cleaned_count
--) {
173 skb
= buffer_info
->skb
;
179 skb
= netdev_alloc_skb(netdev
, bufsz
);
181 /* Better luck next round */
182 adapter
->alloc_rx_buff_failed
++;
187 * Make buffer alignment 2 beyond a 16 byte boundary
188 * this will result in a 16 byte aligned IP header after
189 * the 14 byte MAC header is removed
191 skb_reserve(skb
, NET_IP_ALIGN
);
193 buffer_info
->skb
= skb
;
195 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
196 adapter
->rx_buffer_len
,
198 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
199 dev_err(&pdev
->dev
, "RX DMA map failed\n");
200 adapter
->rx_dma_failed
++;
204 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
205 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
208 if (i
== rx_ring
->count
)
210 buffer_info
= &rx_ring
->buffer_info
[i
];
213 if (rx_ring
->next_to_use
!= i
) {
214 rx_ring
->next_to_use
= i
;
216 i
= (rx_ring
->count
- 1);
219 * Force memory writes to complete before letting h/w
220 * know there are new descriptors to fetch. (Only
221 * applicable for weak-ordered memory model archs,
225 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
230 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
231 * @adapter: address of board private structure
233 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
236 struct net_device
*netdev
= adapter
->netdev
;
237 struct pci_dev
*pdev
= adapter
->pdev
;
238 union e1000_rx_desc_packet_split
*rx_desc
;
239 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
240 struct e1000_buffer
*buffer_info
;
241 struct e1000_ps_page
*ps_page
;
245 i
= rx_ring
->next_to_use
;
246 buffer_info
= &rx_ring
->buffer_info
[i
];
248 while (cleaned_count
--) {
249 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
251 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
252 ps_page
= &buffer_info
->ps_pages
[j
];
253 if (j
>= adapter
->rx_ps_pages
) {
254 /* all unused desc entries get hw null ptr */
255 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
258 if (!ps_page
->page
) {
259 ps_page
->page
= alloc_page(GFP_ATOMIC
);
260 if (!ps_page
->page
) {
261 adapter
->alloc_rx_buff_failed
++;
264 ps_page
->dma
= pci_map_page(pdev
,
268 if (pci_dma_mapping_error(pdev
, ps_page
->dma
)) {
269 dev_err(&adapter
->pdev
->dev
,
270 "RX DMA page map failed\n");
271 adapter
->rx_dma_failed
++;
276 * Refresh the desc even if buffer_addrs
277 * didn't change because each write-back
280 rx_desc
->read
.buffer_addr
[j
+1] =
281 cpu_to_le64(ps_page
->dma
);
284 skb
= netdev_alloc_skb(netdev
,
285 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
288 adapter
->alloc_rx_buff_failed
++;
293 * Make buffer alignment 2 beyond a 16 byte boundary
294 * this will result in a 16 byte aligned IP header after
295 * the 14 byte MAC header is removed
297 skb_reserve(skb
, NET_IP_ALIGN
);
299 buffer_info
->skb
= skb
;
300 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
301 adapter
->rx_ps_bsize0
,
303 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
304 dev_err(&pdev
->dev
, "RX DMA map failed\n");
305 adapter
->rx_dma_failed
++;
307 dev_kfree_skb_any(skb
);
308 buffer_info
->skb
= NULL
;
312 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
315 if (i
== rx_ring
->count
)
317 buffer_info
= &rx_ring
->buffer_info
[i
];
321 if (rx_ring
->next_to_use
!= i
) {
322 rx_ring
->next_to_use
= i
;
325 i
= (rx_ring
->count
- 1);
328 * Force memory writes to complete before letting h/w
329 * know there are new descriptors to fetch. (Only
330 * applicable for weak-ordered memory model archs,
335 * Hardware increments by 16 bytes, but packet split
336 * descriptors are 32 bytes...so we increment tail
339 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
344 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
345 * @adapter: address of board private structure
346 * @rx_ring: pointer to receive ring structure
347 * @cleaned_count: number of buffers to allocate this pass
350 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
353 struct net_device
*netdev
= adapter
->netdev
;
354 struct pci_dev
*pdev
= adapter
->pdev
;
355 struct e1000_rx_desc
*rx_desc
;
356 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
357 struct e1000_buffer
*buffer_info
;
360 unsigned int bufsz
= 256 -
361 16 /* for skb_reserve */ -
364 i
= rx_ring
->next_to_use
;
365 buffer_info
= &rx_ring
->buffer_info
[i
];
367 while (cleaned_count
--) {
368 skb
= buffer_info
->skb
;
374 skb
= netdev_alloc_skb(netdev
, bufsz
);
375 if (unlikely(!skb
)) {
376 /* Better luck next round */
377 adapter
->alloc_rx_buff_failed
++;
381 /* Make buffer alignment 2 beyond a 16 byte boundary
382 * this will result in a 16 byte aligned IP header after
383 * the 14 byte MAC header is removed
385 skb_reserve(skb
, NET_IP_ALIGN
);
387 buffer_info
->skb
= skb
;
389 /* allocate a new page if necessary */
390 if (!buffer_info
->page
) {
391 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
392 if (unlikely(!buffer_info
->page
)) {
393 adapter
->alloc_rx_buff_failed
++;
398 if (!buffer_info
->dma
)
399 buffer_info
->dma
= pci_map_page(pdev
,
400 buffer_info
->page
, 0,
404 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
405 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
407 if (unlikely(++i
== rx_ring
->count
))
409 buffer_info
= &rx_ring
->buffer_info
[i
];
412 if (likely(rx_ring
->next_to_use
!= i
)) {
413 rx_ring
->next_to_use
= i
;
414 if (unlikely(i
-- == 0))
415 i
= (rx_ring
->count
- 1);
417 /* Force memory writes to complete before letting h/w
418 * know there are new descriptors to fetch. (Only
419 * applicable for weak-ordered memory model archs,
422 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
427 * e1000_clean_rx_irq - Send received data up the network stack; legacy
428 * @adapter: board private structure
430 * the return value indicates whether actual cleaning was done, there
431 * is no guarantee that everything was cleaned
433 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
434 int *work_done
, int work_to_do
)
436 struct net_device
*netdev
= adapter
->netdev
;
437 struct pci_dev
*pdev
= adapter
->pdev
;
438 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
439 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
440 struct e1000_buffer
*buffer_info
, *next_buffer
;
443 int cleaned_count
= 0;
445 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
447 i
= rx_ring
->next_to_clean
;
448 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
449 buffer_info
= &rx_ring
->buffer_info
[i
];
451 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
455 if (*work_done
>= work_to_do
)
459 status
= rx_desc
->status
;
460 skb
= buffer_info
->skb
;
461 buffer_info
->skb
= NULL
;
463 prefetch(skb
->data
- NET_IP_ALIGN
);
466 if (i
== rx_ring
->count
)
468 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
471 next_buffer
= &rx_ring
->buffer_info
[i
];
475 pci_unmap_single(pdev
,
477 adapter
->rx_buffer_len
,
479 buffer_info
->dma
= 0;
481 length
= le16_to_cpu(rx_desc
->length
);
483 /* !EOP means multiple descriptors were used to store a single
484 * packet, also make sure the frame isn't just CRC only */
485 if (!(status
& E1000_RXD_STAT_EOP
) || (length
<= 4)) {
486 /* All receives must fit into a single buffer */
487 e_dbg("%s: Receive packet consumed multiple buffers\n",
490 buffer_info
->skb
= skb
;
494 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
496 buffer_info
->skb
= skb
;
500 total_rx_bytes
+= length
;
504 * code added for copybreak, this should improve
505 * performance for small packets with large amounts
506 * of reassembly being done in the stack
508 if (length
< copybreak
) {
509 struct sk_buff
*new_skb
=
510 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
512 skb_reserve(new_skb
, NET_IP_ALIGN
);
513 memcpy(new_skb
->data
- NET_IP_ALIGN
,
514 skb
->data
- NET_IP_ALIGN
,
515 length
+ NET_IP_ALIGN
);
516 /* save the skb in buffer_info as good */
517 buffer_info
->skb
= skb
;
520 /* else just continue with the old one */
522 /* end copybreak code */
523 skb_put(skb
, length
);
525 /* Receive Checksum Offload */
526 e1000_rx_checksum(adapter
,
528 ((u32
)(rx_desc
->errors
) << 24),
529 le16_to_cpu(rx_desc
->csum
), skb
);
531 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
536 /* return some buffers to hardware, one at a time is too slow */
537 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
538 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
542 /* use prefetched values */
544 buffer_info
= next_buffer
;
546 rx_ring
->next_to_clean
= i
;
548 cleaned_count
= e1000_desc_unused(rx_ring
);
550 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
552 adapter
->total_rx_bytes
+= total_rx_bytes
;
553 adapter
->total_rx_packets
+= total_rx_packets
;
554 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
555 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
559 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
560 struct e1000_buffer
*buffer_info
)
562 if (buffer_info
->dma
) {
563 pci_unmap_page(adapter
->pdev
, buffer_info
->dma
,
564 buffer_info
->length
, PCI_DMA_TODEVICE
);
565 buffer_info
->dma
= 0;
567 if (buffer_info
->skb
) {
568 dev_kfree_skb_any(buffer_info
->skb
);
569 buffer_info
->skb
= NULL
;
573 static void e1000_print_tx_hang(struct e1000_adapter
*adapter
)
575 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
576 unsigned int i
= tx_ring
->next_to_clean
;
577 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
578 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
580 /* detected Tx unit hang */
581 e_err("Detected Tx Unit Hang:\n"
584 " next_to_use <%x>\n"
585 " next_to_clean <%x>\n"
586 "buffer_info[next_to_clean]:\n"
587 " time_stamp <%lx>\n"
588 " next_to_watch <%x>\n"
590 " next_to_watch.status <%x>\n",
591 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
592 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
593 tx_ring
->next_to_use
,
594 tx_ring
->next_to_clean
,
595 tx_ring
->buffer_info
[eop
].time_stamp
,
598 eop_desc
->upper
.fields
.status
);
602 * e1000_clean_tx_irq - Reclaim resources after transmit completes
603 * @adapter: board private structure
605 * the return value indicates whether actual cleaning was done, there
606 * is no guarantee that everything was cleaned
608 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
610 struct net_device
*netdev
= adapter
->netdev
;
611 struct e1000_hw
*hw
= &adapter
->hw
;
612 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
613 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
614 struct e1000_buffer
*buffer_info
;
616 unsigned int count
= 0;
618 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
620 i
= tx_ring
->next_to_clean
;
621 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
622 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
624 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
625 for (cleaned
= 0; !cleaned
; ) {
626 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
627 buffer_info
= &tx_ring
->buffer_info
[i
];
628 cleaned
= (i
== eop
);
631 struct sk_buff
*skb
= buffer_info
->skb
;
632 unsigned int segs
, bytecount
;
633 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
634 /* multiply data chunks by size of headers */
635 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
637 total_tx_packets
+= segs
;
638 total_tx_bytes
+= bytecount
;
641 e1000_put_txbuf(adapter
, buffer_info
);
642 tx_desc
->upper
.data
= 0;
645 if (i
== tx_ring
->count
)
649 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
650 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
651 #define E1000_TX_WEIGHT 64
652 /* weight of a sort for tx, to avoid endless transmit cleanup */
653 if (count
++ == E1000_TX_WEIGHT
)
657 tx_ring
->next_to_clean
= i
;
659 #define TX_WAKE_THRESHOLD 32
660 if (cleaned
&& netif_carrier_ok(netdev
) &&
661 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
662 /* Make sure that anybody stopping the queue after this
663 * sees the new next_to_clean.
667 if (netif_queue_stopped(netdev
) &&
668 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
669 netif_wake_queue(netdev
);
670 ++adapter
->restart_queue
;
674 if (adapter
->detect_tx_hung
) {
676 * Detect a transmit hang in hardware, this serializes the
677 * check with the clearing of time_stamp and movement of i
679 adapter
->detect_tx_hung
= 0;
680 if (tx_ring
->buffer_info
[eop
].dma
&&
681 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
682 + (adapter
->tx_timeout_factor
* HZ
))
683 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
684 e1000_print_tx_hang(adapter
);
685 netif_stop_queue(netdev
);
688 adapter
->total_tx_bytes
+= total_tx_bytes
;
689 adapter
->total_tx_packets
+= total_tx_packets
;
690 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
691 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
696 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
697 * @adapter: board private structure
699 * the return value indicates whether actual cleaning was done, there
700 * is no guarantee that everything was cleaned
702 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
703 int *work_done
, int work_to_do
)
705 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
706 struct net_device
*netdev
= adapter
->netdev
;
707 struct pci_dev
*pdev
= adapter
->pdev
;
708 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
709 struct e1000_buffer
*buffer_info
, *next_buffer
;
710 struct e1000_ps_page
*ps_page
;
714 int cleaned_count
= 0;
716 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
718 i
= rx_ring
->next_to_clean
;
719 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
720 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
721 buffer_info
= &rx_ring
->buffer_info
[i
];
723 while (staterr
& E1000_RXD_STAT_DD
) {
724 if (*work_done
>= work_to_do
)
727 skb
= buffer_info
->skb
;
729 /* in the packet split case this is header only */
730 prefetch(skb
->data
- NET_IP_ALIGN
);
733 if (i
== rx_ring
->count
)
735 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
738 next_buffer
= &rx_ring
->buffer_info
[i
];
742 pci_unmap_single(pdev
, buffer_info
->dma
,
743 adapter
->rx_ps_bsize0
,
745 buffer_info
->dma
= 0;
747 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
748 e_dbg("%s: Packet Split buffers didn't pick up the "
749 "full packet\n", netdev
->name
);
750 dev_kfree_skb_irq(skb
);
754 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
755 dev_kfree_skb_irq(skb
);
759 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
762 e_dbg("%s: Last part of the packet spanning multiple "
763 "descriptors\n", netdev
->name
);
764 dev_kfree_skb_irq(skb
);
769 skb_put(skb
, length
);
773 * this looks ugly, but it seems compiler issues make it
774 * more efficient than reusing j
776 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
779 * page alloc/put takes too long and effects small packet
780 * throughput, so unsplit small packets and save the alloc/put
781 * only valid in softirq (napi) context to call kmap_*
783 if (l1
&& (l1
<= copybreak
) &&
784 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
787 ps_page
= &buffer_info
->ps_pages
[0];
790 * there is no documentation about how to call
791 * kmap_atomic, so we can't hold the mapping
794 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
795 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
796 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
797 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
798 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
799 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
800 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
807 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
808 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
812 ps_page
= &buffer_info
->ps_pages
[j
];
813 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
816 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
817 ps_page
->page
= NULL
;
819 skb
->data_len
+= length
;
820 skb
->truesize
+= length
;
824 total_rx_bytes
+= skb
->len
;
827 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
828 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
830 if (rx_desc
->wb
.upper
.header_status
&
831 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
832 adapter
->rx_hdr_split
++;
834 e1000_receive_skb(adapter
, netdev
, skb
,
835 staterr
, rx_desc
->wb
.middle
.vlan
);
838 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
839 buffer_info
->skb
= NULL
;
841 /* return some buffers to hardware, one at a time is too slow */
842 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
843 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
847 /* use prefetched values */
849 buffer_info
= next_buffer
;
851 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
853 rx_ring
->next_to_clean
= i
;
855 cleaned_count
= e1000_desc_unused(rx_ring
);
857 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
859 adapter
->total_rx_bytes
+= total_rx_bytes
;
860 adapter
->total_rx_packets
+= total_rx_packets
;
861 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
862 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
867 * e1000_consume_page - helper function
869 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
874 skb
->data_len
+= length
;
875 skb
->truesize
+= length
;
879 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
880 * @adapter: board private structure
882 * the return value indicates whether actual cleaning was done, there
883 * is no guarantee that everything was cleaned
886 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
887 int *work_done
, int work_to_do
)
889 struct net_device
*netdev
= adapter
->netdev
;
890 struct pci_dev
*pdev
= adapter
->pdev
;
891 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
892 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
893 struct e1000_buffer
*buffer_info
, *next_buffer
;
896 int cleaned_count
= 0;
897 bool cleaned
= false;
898 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
900 i
= rx_ring
->next_to_clean
;
901 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
902 buffer_info
= &rx_ring
->buffer_info
[i
];
904 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
908 if (*work_done
>= work_to_do
)
912 status
= rx_desc
->status
;
913 skb
= buffer_info
->skb
;
914 buffer_info
->skb
= NULL
;
917 if (i
== rx_ring
->count
)
919 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
922 next_buffer
= &rx_ring
->buffer_info
[i
];
926 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
928 buffer_info
->dma
= 0;
930 length
= le16_to_cpu(rx_desc
->length
);
932 /* errors is only valid for DD + EOP descriptors */
933 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
934 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
935 /* recycle both page and skb */
936 buffer_info
->skb
= skb
;
937 /* an error means any chain goes out the window
939 if (rx_ring
->rx_skb_top
)
940 dev_kfree_skb(rx_ring
->rx_skb_top
);
941 rx_ring
->rx_skb_top
= NULL
;
945 #define rxtop rx_ring->rx_skb_top
946 if (!(status
& E1000_RXD_STAT_EOP
)) {
947 /* this descriptor is only the beginning (or middle) */
949 /* this is the beginning of a chain */
951 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
954 /* this is the middle of a chain */
955 skb_fill_page_desc(rxtop
,
956 skb_shinfo(rxtop
)->nr_frags
,
957 buffer_info
->page
, 0, length
);
958 /* re-use the skb, only consumed the page */
959 buffer_info
->skb
= skb
;
961 e1000_consume_page(buffer_info
, rxtop
, length
);
965 /* end of the chain */
966 skb_fill_page_desc(rxtop
,
967 skb_shinfo(rxtop
)->nr_frags
,
968 buffer_info
->page
, 0, length
);
969 /* re-use the current skb, we only consumed the
971 buffer_info
->skb
= skb
;
974 e1000_consume_page(buffer_info
, skb
, length
);
976 /* no chain, got EOP, this buf is the packet
977 * copybreak to save the put_page/alloc_page */
978 if (length
<= copybreak
&&
979 skb_tailroom(skb
) >= length
) {
981 vaddr
= kmap_atomic(buffer_info
->page
,
982 KM_SKB_DATA_SOFTIRQ
);
983 memcpy(skb_tail_pointer(skb
), vaddr
,
986 KM_SKB_DATA_SOFTIRQ
);
987 /* re-use the page, so don't erase
988 * buffer_info->page */
989 skb_put(skb
, length
);
991 skb_fill_page_desc(skb
, 0,
992 buffer_info
->page
, 0,
994 e1000_consume_page(buffer_info
, skb
,
1000 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1001 e1000_rx_checksum(adapter
,
1003 ((u32
)(rx_desc
->errors
) << 24),
1004 le16_to_cpu(rx_desc
->csum
), skb
);
1006 /* probably a little skewed due to removing CRC */
1007 total_rx_bytes
+= skb
->len
;
1010 /* eth type trans needs skb->data to point to something */
1011 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1012 e_err("pskb_may_pull failed.\n");
1017 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1021 rx_desc
->status
= 0;
1023 /* return some buffers to hardware, one at a time is too slow */
1024 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1025 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1029 /* use prefetched values */
1031 buffer_info
= next_buffer
;
1033 rx_ring
->next_to_clean
= i
;
1035 cleaned_count
= e1000_desc_unused(rx_ring
);
1037 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1039 adapter
->total_rx_bytes
+= total_rx_bytes
;
1040 adapter
->total_rx_packets
+= total_rx_packets
;
1041 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1042 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1047 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1048 * @adapter: board private structure
1050 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1052 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1053 struct e1000_buffer
*buffer_info
;
1054 struct e1000_ps_page
*ps_page
;
1055 struct pci_dev
*pdev
= adapter
->pdev
;
1058 /* Free all the Rx ring sk_buffs */
1059 for (i
= 0; i
< rx_ring
->count
; i
++) {
1060 buffer_info
= &rx_ring
->buffer_info
[i
];
1061 if (buffer_info
->dma
) {
1062 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1063 pci_unmap_single(pdev
, buffer_info
->dma
,
1064 adapter
->rx_buffer_len
,
1065 PCI_DMA_FROMDEVICE
);
1066 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1067 pci_unmap_page(pdev
, buffer_info
->dma
,
1069 PCI_DMA_FROMDEVICE
);
1070 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1071 pci_unmap_single(pdev
, buffer_info
->dma
,
1072 adapter
->rx_ps_bsize0
,
1073 PCI_DMA_FROMDEVICE
);
1074 buffer_info
->dma
= 0;
1077 if (buffer_info
->page
) {
1078 put_page(buffer_info
->page
);
1079 buffer_info
->page
= NULL
;
1082 if (buffer_info
->skb
) {
1083 dev_kfree_skb(buffer_info
->skb
);
1084 buffer_info
->skb
= NULL
;
1087 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1088 ps_page
= &buffer_info
->ps_pages
[j
];
1091 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1092 PCI_DMA_FROMDEVICE
);
1094 put_page(ps_page
->page
);
1095 ps_page
->page
= NULL
;
1099 /* there also may be some cached data from a chained receive */
1100 if (rx_ring
->rx_skb_top
) {
1101 dev_kfree_skb(rx_ring
->rx_skb_top
);
1102 rx_ring
->rx_skb_top
= NULL
;
1105 /* Zero out the descriptor ring */
1106 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1108 rx_ring
->next_to_clean
= 0;
1109 rx_ring
->next_to_use
= 0;
1111 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1112 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1116 * e1000_intr_msi - Interrupt Handler
1117 * @irq: interrupt number
1118 * @data: pointer to a network interface device structure
1120 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1122 struct net_device
*netdev
= data
;
1123 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1124 struct e1000_hw
*hw
= &adapter
->hw
;
1125 u32 icr
= er32(ICR
);
1128 * read ICR disables interrupts using IAM
1131 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1132 hw
->mac
.get_link_status
= 1;
1134 * ICH8 workaround-- Call gig speed drop workaround on cable
1135 * disconnect (LSC) before accessing any PHY registers
1137 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1138 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1139 e1000e_gig_downshift_workaround_ich8lan(hw
);
1142 * 80003ES2LAN workaround-- For packet buffer work-around on
1143 * link down event; disable receives here in the ISR and reset
1144 * adapter in watchdog
1146 if (netif_carrier_ok(netdev
) &&
1147 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1148 /* disable receives */
1149 u32 rctl
= er32(RCTL
);
1150 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1151 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1153 /* guard against interrupt when we're going down */
1154 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1155 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1158 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1159 adapter
->total_tx_bytes
= 0;
1160 adapter
->total_tx_packets
= 0;
1161 adapter
->total_rx_bytes
= 0;
1162 adapter
->total_rx_packets
= 0;
1163 __netif_rx_schedule(netdev
, &adapter
->napi
);
1170 * e1000_intr - Interrupt Handler
1171 * @irq: interrupt number
1172 * @data: pointer to a network interface device structure
1174 static irqreturn_t
e1000_intr(int irq
, void *data
)
1176 struct net_device
*netdev
= data
;
1177 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1178 struct e1000_hw
*hw
= &adapter
->hw
;
1180 u32 rctl
, icr
= er32(ICR
);
1182 return IRQ_NONE
; /* Not our interrupt */
1185 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1186 * not set, then the adapter didn't send an interrupt
1188 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1192 * Interrupt Auto-Mask...upon reading ICR,
1193 * interrupts are masked. No need for the
1197 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1198 hw
->mac
.get_link_status
= 1;
1200 * ICH8 workaround-- Call gig speed drop workaround on cable
1201 * disconnect (LSC) before accessing any PHY registers
1203 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1204 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1205 e1000e_gig_downshift_workaround_ich8lan(hw
);
1208 * 80003ES2LAN workaround--
1209 * For packet buffer work-around on link down event;
1210 * disable receives here in the ISR and
1211 * reset adapter in watchdog
1213 if (netif_carrier_ok(netdev
) &&
1214 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1215 /* disable receives */
1217 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1218 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1220 /* guard against interrupt when we're going down */
1221 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1222 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1225 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1226 adapter
->total_tx_bytes
= 0;
1227 adapter
->total_tx_packets
= 0;
1228 adapter
->total_rx_bytes
= 0;
1229 adapter
->total_rx_packets
= 0;
1230 __netif_rx_schedule(netdev
, &adapter
->napi
);
1236 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1238 struct net_device
*netdev
= adapter
->netdev
;
1239 irq_handler_t handler
= e1000_intr
;
1240 int irq_flags
= IRQF_SHARED
;
1243 if (!pci_enable_msi(adapter
->pdev
)) {
1244 adapter
->flags
|= FLAG_MSI_ENABLED
;
1245 handler
= e1000_intr_msi
;
1249 err
= request_irq(adapter
->pdev
->irq
, handler
, irq_flags
, netdev
->name
,
1252 e_err("Unable to allocate %s interrupt (return: %d)\n",
1253 adapter
->flags
& FLAG_MSI_ENABLED
? "MSI":"INTx", err
);
1254 if (adapter
->flags
& FLAG_MSI_ENABLED
)
1255 pci_disable_msi(adapter
->pdev
);
1261 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1263 struct net_device
*netdev
= adapter
->netdev
;
1265 free_irq(adapter
->pdev
->irq
, netdev
);
1266 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1267 pci_disable_msi(adapter
->pdev
);
1268 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1273 * e1000_irq_disable - Mask off interrupt generation on the NIC
1275 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1277 struct e1000_hw
*hw
= &adapter
->hw
;
1281 synchronize_irq(adapter
->pdev
->irq
);
1285 * e1000_irq_enable - Enable default interrupt generation settings
1287 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1289 struct e1000_hw
*hw
= &adapter
->hw
;
1291 ew32(IMS
, IMS_ENABLE_MASK
);
1296 * e1000_get_hw_control - get control of the h/w from f/w
1297 * @adapter: address of board private structure
1299 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1300 * For ASF and Pass Through versions of f/w this means that
1301 * the driver is loaded. For AMT version (only with 82573)
1302 * of the f/w this means that the network i/f is open.
1304 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1306 struct e1000_hw
*hw
= &adapter
->hw
;
1310 /* Let firmware know the driver has taken over */
1311 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1313 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1314 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1315 ctrl_ext
= er32(CTRL_EXT
);
1316 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1321 * e1000_release_hw_control - release control of the h/w to f/w
1322 * @adapter: address of board private structure
1324 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1325 * For ASF and Pass Through versions of f/w this means that the
1326 * driver is no longer loaded. For AMT version (only with 82573) i
1327 * of the f/w this means that the network i/f is closed.
1330 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1332 struct e1000_hw
*hw
= &adapter
->hw
;
1336 /* Let firmware taken over control of h/w */
1337 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1339 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1340 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1341 ctrl_ext
= er32(CTRL_EXT
);
1342 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1347 * @e1000_alloc_ring - allocate memory for a ring structure
1349 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1350 struct e1000_ring
*ring
)
1352 struct pci_dev
*pdev
= adapter
->pdev
;
1354 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1363 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1364 * @adapter: board private structure
1366 * Return 0 on success, negative on failure
1368 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1370 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1371 int err
= -ENOMEM
, size
;
1373 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1374 tx_ring
->buffer_info
= vmalloc(size
);
1375 if (!tx_ring
->buffer_info
)
1377 memset(tx_ring
->buffer_info
, 0, size
);
1379 /* round up to nearest 4K */
1380 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1381 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1383 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1387 tx_ring
->next_to_use
= 0;
1388 tx_ring
->next_to_clean
= 0;
1389 spin_lock_init(&adapter
->tx_queue_lock
);
1393 vfree(tx_ring
->buffer_info
);
1394 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1399 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1400 * @adapter: board private structure
1402 * Returns 0 on success, negative on failure
1404 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1406 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1407 struct e1000_buffer
*buffer_info
;
1408 int i
, size
, desc_len
, err
= -ENOMEM
;
1410 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1411 rx_ring
->buffer_info
= vmalloc(size
);
1412 if (!rx_ring
->buffer_info
)
1414 memset(rx_ring
->buffer_info
, 0, size
);
1416 for (i
= 0; i
< rx_ring
->count
; i
++) {
1417 buffer_info
= &rx_ring
->buffer_info
[i
];
1418 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1419 sizeof(struct e1000_ps_page
),
1421 if (!buffer_info
->ps_pages
)
1425 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1427 /* Round up to nearest 4K */
1428 rx_ring
->size
= rx_ring
->count
* desc_len
;
1429 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1431 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1435 rx_ring
->next_to_clean
= 0;
1436 rx_ring
->next_to_use
= 0;
1437 rx_ring
->rx_skb_top
= NULL
;
1442 for (i
= 0; i
< rx_ring
->count
; i
++) {
1443 buffer_info
= &rx_ring
->buffer_info
[i
];
1444 kfree(buffer_info
->ps_pages
);
1447 vfree(rx_ring
->buffer_info
);
1448 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1453 * e1000_clean_tx_ring - Free Tx Buffers
1454 * @adapter: board private structure
1456 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1458 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1459 struct e1000_buffer
*buffer_info
;
1463 for (i
= 0; i
< tx_ring
->count
; i
++) {
1464 buffer_info
= &tx_ring
->buffer_info
[i
];
1465 e1000_put_txbuf(adapter
, buffer_info
);
1468 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1469 memset(tx_ring
->buffer_info
, 0, size
);
1471 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1473 tx_ring
->next_to_use
= 0;
1474 tx_ring
->next_to_clean
= 0;
1476 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1477 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1481 * e1000e_free_tx_resources - Free Tx Resources per Queue
1482 * @adapter: board private structure
1484 * Free all transmit software resources
1486 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1488 struct pci_dev
*pdev
= adapter
->pdev
;
1489 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1491 e1000_clean_tx_ring(adapter
);
1493 vfree(tx_ring
->buffer_info
);
1494 tx_ring
->buffer_info
= NULL
;
1496 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1498 tx_ring
->desc
= NULL
;
1502 * e1000e_free_rx_resources - Free Rx Resources
1503 * @adapter: board private structure
1505 * Free all receive software resources
1508 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1510 struct pci_dev
*pdev
= adapter
->pdev
;
1511 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1514 e1000_clean_rx_ring(adapter
);
1516 for (i
= 0; i
< rx_ring
->count
; i
++) {
1517 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1520 vfree(rx_ring
->buffer_info
);
1521 rx_ring
->buffer_info
= NULL
;
1523 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1525 rx_ring
->desc
= NULL
;
1529 * e1000_update_itr - update the dynamic ITR value based on statistics
1530 * @adapter: pointer to adapter
1531 * @itr_setting: current adapter->itr
1532 * @packets: the number of packets during this measurement interval
1533 * @bytes: the number of bytes during this measurement interval
1535 * Stores a new ITR value based on packets and byte
1536 * counts during the last interrupt. The advantage of per interrupt
1537 * computation is faster updates and more accurate ITR for the current
1538 * traffic pattern. Constants in this function were computed
1539 * based on theoretical maximum wire speed and thresholds were set based
1540 * on testing data as well as attempting to minimize response time
1541 * while increasing bulk throughput.
1542 * this functionality is controlled by the InterruptThrottleRate module
1543 * parameter (see e1000_param.c)
1545 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1546 u16 itr_setting
, int packets
,
1549 unsigned int retval
= itr_setting
;
1552 goto update_itr_done
;
1554 switch (itr_setting
) {
1555 case lowest_latency
:
1556 /* handle TSO and jumbo frames */
1557 if (bytes
/packets
> 8000)
1558 retval
= bulk_latency
;
1559 else if ((packets
< 5) && (bytes
> 512)) {
1560 retval
= low_latency
;
1563 case low_latency
: /* 50 usec aka 20000 ints/s */
1564 if (bytes
> 10000) {
1565 /* this if handles the TSO accounting */
1566 if (bytes
/packets
> 8000) {
1567 retval
= bulk_latency
;
1568 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1569 retval
= bulk_latency
;
1570 } else if ((packets
> 35)) {
1571 retval
= lowest_latency
;
1573 } else if (bytes
/packets
> 2000) {
1574 retval
= bulk_latency
;
1575 } else if (packets
<= 2 && bytes
< 512) {
1576 retval
= lowest_latency
;
1579 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1580 if (bytes
> 25000) {
1582 retval
= low_latency
;
1584 } else if (bytes
< 6000) {
1585 retval
= low_latency
;
1594 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1596 struct e1000_hw
*hw
= &adapter
->hw
;
1598 u32 new_itr
= adapter
->itr
;
1600 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1601 if (adapter
->link_speed
!= SPEED_1000
) {
1607 adapter
->tx_itr
= e1000_update_itr(adapter
,
1609 adapter
->total_tx_packets
,
1610 adapter
->total_tx_bytes
);
1611 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1612 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1613 adapter
->tx_itr
= low_latency
;
1615 adapter
->rx_itr
= e1000_update_itr(adapter
,
1617 adapter
->total_rx_packets
,
1618 adapter
->total_rx_bytes
);
1619 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1620 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1621 adapter
->rx_itr
= low_latency
;
1623 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1625 switch (current_itr
) {
1626 /* counts and packets in update_itr are dependent on these numbers */
1627 case lowest_latency
:
1631 new_itr
= 20000; /* aka hwitr = ~200 */
1641 if (new_itr
!= adapter
->itr
) {
1643 * this attempts to bias the interrupt rate towards Bulk
1644 * by adding intermediate steps when interrupt rate is
1647 new_itr
= new_itr
> adapter
->itr
?
1648 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1650 adapter
->itr
= new_itr
;
1651 ew32(ITR
, 1000000000 / (new_itr
* 256));
1656 * e1000_clean - NAPI Rx polling callback
1657 * @napi: struct associated with this polling callback
1658 * @budget: amount of packets driver is allowed to process this poll
1660 static int e1000_clean(struct napi_struct
*napi
, int budget
)
1662 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
1663 struct net_device
*poll_dev
= adapter
->netdev
;
1664 int tx_cleaned
= 0, work_done
= 0;
1666 /* Must NOT use netdev_priv macro here. */
1667 adapter
= poll_dev
->priv
;
1670 * e1000_clean is called per-cpu. This lock protects
1671 * tx_ring from being cleaned by multiple cpus
1672 * simultaneously. A failure obtaining the lock means
1673 * tx_ring is currently being cleaned anyway.
1675 if (spin_trylock(&adapter
->tx_queue_lock
)) {
1676 tx_cleaned
= e1000_clean_tx_irq(adapter
);
1677 spin_unlock(&adapter
->tx_queue_lock
);
1680 adapter
->clean_rx(adapter
, &work_done
, budget
);
1685 /* If budget not fully consumed, exit the polling mode */
1686 if (work_done
< budget
) {
1687 if (adapter
->itr_setting
& 3)
1688 e1000_set_itr(adapter
);
1689 netif_rx_complete(poll_dev
, napi
);
1690 e1000_irq_enable(adapter
);
1696 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1698 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1699 struct e1000_hw
*hw
= &adapter
->hw
;
1702 /* don't update vlan cookie if already programmed */
1703 if ((adapter
->hw
.mng_cookie
.status
&
1704 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1705 (vid
== adapter
->mng_vlan_id
))
1707 /* add VID to filter table */
1708 index
= (vid
>> 5) & 0x7F;
1709 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
1710 vfta
|= (1 << (vid
& 0x1F));
1711 e1000e_write_vfta(hw
, index
, vfta
);
1714 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1716 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1717 struct e1000_hw
*hw
= &adapter
->hw
;
1720 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1721 e1000_irq_disable(adapter
);
1722 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
1724 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1725 e1000_irq_enable(adapter
);
1727 if ((adapter
->hw
.mng_cookie
.status
&
1728 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1729 (vid
== adapter
->mng_vlan_id
)) {
1730 /* release control to f/w */
1731 e1000_release_hw_control(adapter
);
1735 /* remove VID from filter table */
1736 index
= (vid
>> 5) & 0x7F;
1737 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
1738 vfta
&= ~(1 << (vid
& 0x1F));
1739 e1000e_write_vfta(hw
, index
, vfta
);
1742 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
1744 struct net_device
*netdev
= adapter
->netdev
;
1745 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
1746 u16 old_vid
= adapter
->mng_vlan_id
;
1748 if (!adapter
->vlgrp
)
1751 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
1752 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1753 if (adapter
->hw
.mng_cookie
.status
&
1754 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
1755 e1000_vlan_rx_add_vid(netdev
, vid
);
1756 adapter
->mng_vlan_id
= vid
;
1759 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
1761 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
1762 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
1764 adapter
->mng_vlan_id
= vid
;
1769 static void e1000_vlan_rx_register(struct net_device
*netdev
,
1770 struct vlan_group
*grp
)
1772 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1773 struct e1000_hw
*hw
= &adapter
->hw
;
1776 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1777 e1000_irq_disable(adapter
);
1778 adapter
->vlgrp
= grp
;
1781 /* enable VLAN tag insert/strip */
1783 ctrl
|= E1000_CTRL_VME
;
1786 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
1787 /* enable VLAN receive filtering */
1789 rctl
&= ~E1000_RCTL_CFIEN
;
1791 e1000_update_mng_vlan(adapter
);
1794 /* disable VLAN tag insert/strip */
1796 ctrl
&= ~E1000_CTRL_VME
;
1799 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
1800 if (adapter
->mng_vlan_id
!=
1801 (u16
)E1000_MNG_VLAN_NONE
) {
1802 e1000_vlan_rx_kill_vid(netdev
,
1803 adapter
->mng_vlan_id
);
1804 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1809 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1810 e1000_irq_enable(adapter
);
1813 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
1817 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1819 if (!adapter
->vlgrp
)
1822 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
1823 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
1825 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
1829 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
1831 struct e1000_hw
*hw
= &adapter
->hw
;
1834 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
1840 * enable receiving management packets to the host. this will probably
1841 * generate destination unreachable messages from the host OS, but
1842 * the packets will be handled on SMBUS
1844 manc
|= E1000_MANC_EN_MNG2HOST
;
1845 manc2h
= er32(MANC2H
);
1846 #define E1000_MNG2HOST_PORT_623 (1 << 5)
1847 #define E1000_MNG2HOST_PORT_664 (1 << 6)
1848 manc2h
|= E1000_MNG2HOST_PORT_623
;
1849 manc2h
|= E1000_MNG2HOST_PORT_664
;
1850 ew32(MANC2H
, manc2h
);
1855 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1856 * @adapter: board private structure
1858 * Configure the Tx unit of the MAC after a reset.
1860 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
1862 struct e1000_hw
*hw
= &adapter
->hw
;
1863 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1865 u32 tdlen
, tctl
, tipg
, tarc
;
1868 /* Setup the HW Tx Head and Tail descriptor pointers */
1869 tdba
= tx_ring
->dma
;
1870 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1871 ew32(TDBAL
, (tdba
& DMA_32BIT_MASK
));
1872 ew32(TDBAH
, (tdba
>> 32));
1876 tx_ring
->head
= E1000_TDH
;
1877 tx_ring
->tail
= E1000_TDT
;
1879 /* Set the default values for the Tx Inter Packet Gap timer */
1880 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
1881 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
1882 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
1884 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
1885 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
1887 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1888 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1891 /* Set the Tx Interrupt Delay register */
1892 ew32(TIDV
, adapter
->tx_int_delay
);
1893 /* Tx irq moderation */
1894 ew32(TADV
, adapter
->tx_abs_int_delay
);
1896 /* Program the Transmit Control Register */
1898 tctl
&= ~E1000_TCTL_CT
;
1899 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1900 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1902 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
1903 tarc
= er32(TARC(0));
1905 * set the speed mode bit, we'll clear it if we're not at
1906 * gigabit link later
1908 #define SPEED_MODE_BIT (1 << 21)
1909 tarc
|= SPEED_MODE_BIT
;
1910 ew32(TARC(0), tarc
);
1913 /* errata: program both queues to unweighted RR */
1914 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
1915 tarc
= er32(TARC(0));
1917 ew32(TARC(0), tarc
);
1918 tarc
= er32(TARC(1));
1920 ew32(TARC(1), tarc
);
1923 e1000e_config_collision_dist(hw
);
1925 /* Setup Transmit Descriptor Settings for eop descriptor */
1926 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1928 /* only set IDE if we are delaying interrupts using the timers */
1929 if (adapter
->tx_int_delay
)
1930 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1932 /* enable Report Status bit */
1933 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1937 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
1941 * e1000_setup_rctl - configure the receive control registers
1942 * @adapter: Board private structure
1944 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1945 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1946 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
1948 struct e1000_hw
*hw
= &adapter
->hw
;
1953 /* Program MC offset vector base */
1955 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1956 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1957 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1958 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1960 /* Do not Store bad packets */
1961 rctl
&= ~E1000_RCTL_SBP
;
1963 /* Enable Long Packet receive */
1964 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1965 rctl
&= ~E1000_RCTL_LPE
;
1967 rctl
|= E1000_RCTL_LPE
;
1969 /* Enable hardware CRC frame stripping */
1970 rctl
|= E1000_RCTL_SECRC
;
1972 /* Setup buffer sizes */
1973 rctl
&= ~E1000_RCTL_SZ_4096
;
1974 rctl
|= E1000_RCTL_BSEX
;
1975 switch (adapter
->rx_buffer_len
) {
1977 rctl
|= E1000_RCTL_SZ_256
;
1978 rctl
&= ~E1000_RCTL_BSEX
;
1981 rctl
|= E1000_RCTL_SZ_512
;
1982 rctl
&= ~E1000_RCTL_BSEX
;
1985 rctl
|= E1000_RCTL_SZ_1024
;
1986 rctl
&= ~E1000_RCTL_BSEX
;
1990 rctl
|= E1000_RCTL_SZ_2048
;
1991 rctl
&= ~E1000_RCTL_BSEX
;
1994 rctl
|= E1000_RCTL_SZ_4096
;
1997 rctl
|= E1000_RCTL_SZ_8192
;
2000 rctl
|= E1000_RCTL_SZ_16384
;
2005 * 82571 and greater support packet-split where the protocol
2006 * header is placed in skb->data and the packet data is
2007 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2008 * In the case of a non-split, skb->data is linearly filled,
2009 * followed by the page buffers. Therefore, skb->data is
2010 * sized to hold the largest protocol header.
2012 * allocations using alloc_page take too long for regular MTU
2013 * so only enable packet split for jumbo frames
2015 * Using pages when the page size is greater than 16k wastes
2016 * a lot of memory, since we allocate 3 pages at all times
2019 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2020 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2021 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2022 adapter
->rx_ps_pages
= pages
;
2024 adapter
->rx_ps_pages
= 0;
2026 if (adapter
->rx_ps_pages
) {
2027 /* Configure extra packet-split registers */
2028 rfctl
= er32(RFCTL
);
2029 rfctl
|= E1000_RFCTL_EXTEN
;
2031 * disable packet split support for IPv6 extension headers,
2032 * because some malformed IPv6 headers can hang the Rx
2034 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2035 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2039 /* Enable Packet split descriptors */
2040 rctl
|= E1000_RCTL_DTYP_PS
;
2042 psrctl
|= adapter
->rx_ps_bsize0
>>
2043 E1000_PSRCTL_BSIZE0_SHIFT
;
2045 switch (adapter
->rx_ps_pages
) {
2047 psrctl
|= PAGE_SIZE
<<
2048 E1000_PSRCTL_BSIZE3_SHIFT
;
2050 psrctl
|= PAGE_SIZE
<<
2051 E1000_PSRCTL_BSIZE2_SHIFT
;
2053 psrctl
|= PAGE_SIZE
>>
2054 E1000_PSRCTL_BSIZE1_SHIFT
;
2058 ew32(PSRCTL
, psrctl
);
2062 /* just started the receive unit, no need to restart */
2063 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2067 * e1000_configure_rx - Configure Receive Unit after Reset
2068 * @adapter: board private structure
2070 * Configure the Rx unit of the MAC after a reset.
2072 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2074 struct e1000_hw
*hw
= &adapter
->hw
;
2075 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2077 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2079 if (adapter
->rx_ps_pages
) {
2080 /* this is a 32 byte descriptor */
2081 rdlen
= rx_ring
->count
*
2082 sizeof(union e1000_rx_desc_packet_split
);
2083 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2084 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2085 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2086 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2087 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2088 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2090 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2091 adapter
->clean_rx
= e1000_clean_rx_irq
;
2092 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2095 /* disable receives while setting up the descriptors */
2097 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2101 /* set the Receive Delay Timer Register */
2102 ew32(RDTR
, adapter
->rx_int_delay
);
2104 /* irq moderation */
2105 ew32(RADV
, adapter
->rx_abs_int_delay
);
2106 if (adapter
->itr_setting
!= 0)
2107 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2109 ctrl_ext
= er32(CTRL_EXT
);
2110 /* Reset delay timers after every interrupt */
2111 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2112 /* Auto-Mask interrupts upon ICR access */
2113 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2114 ew32(IAM
, 0xffffffff);
2115 ew32(CTRL_EXT
, ctrl_ext
);
2119 * Setup the HW Rx Head and Tail Descriptor Pointers and
2120 * the Base and Length of the Rx Descriptor Ring
2122 rdba
= rx_ring
->dma
;
2123 ew32(RDBAL
, (rdba
& DMA_32BIT_MASK
));
2124 ew32(RDBAH
, (rdba
>> 32));
2128 rx_ring
->head
= E1000_RDH
;
2129 rx_ring
->tail
= E1000_RDT
;
2131 /* Enable Receive Checksum Offload for TCP and UDP */
2132 rxcsum
= er32(RXCSUM
);
2133 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2134 rxcsum
|= E1000_RXCSUM_TUOFL
;
2137 * IPv4 payload checksum for UDP fragments must be
2138 * used in conjunction with packet-split.
2140 if (adapter
->rx_ps_pages
)
2141 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2143 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2144 /* no need to clear IPPCSE as it defaults to 0 */
2146 ew32(RXCSUM
, rxcsum
);
2149 * Enable early receives on supported devices, only takes effect when
2150 * packet size is equal or larger than the specified value (in 8 byte
2151 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2153 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2154 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2155 u32 rxdctl
= er32(RXDCTL(0));
2156 ew32(RXDCTL(0), rxdctl
| 0x3);
2157 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2159 * With jumbo frames and early-receive enabled, excessive
2160 * C4->C2 latencies result in dropped transactions.
2162 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2163 e1000e_driver_name
, 55);
2165 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2167 PM_QOS_DEFAULT_VALUE
);
2170 /* Enable Receives */
2175 * e1000_update_mc_addr_list - Update Multicast addresses
2176 * @hw: pointer to the HW structure
2177 * @mc_addr_list: array of multicast addresses to program
2178 * @mc_addr_count: number of multicast addresses to program
2179 * @rar_used_count: the first RAR register free to program
2180 * @rar_count: total number of supported Receive Address Registers
2182 * Updates the Receive Address Registers and Multicast Table Array.
2183 * The caller must have a packed mc_addr_list of multicast addresses.
2184 * The parameter rar_count will usually be hw->mac.rar_entry_count
2185 * unless there are workarounds that change this. Currently no func pointer
2186 * exists and all implementations are handled in the generic version of this
2189 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2190 u32 mc_addr_count
, u32 rar_used_count
,
2193 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2194 rar_used_count
, rar_count
);
2198 * e1000_set_multi - Multicast and Promiscuous mode set
2199 * @netdev: network interface device structure
2201 * The set_multi entry point is called whenever the multicast address
2202 * list or the network interface flags are updated. This routine is
2203 * responsible for configuring the hardware for proper multicast,
2204 * promiscuous mode, and all-multi behavior.
2206 static void e1000_set_multi(struct net_device
*netdev
)
2208 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2209 struct e1000_hw
*hw
= &adapter
->hw
;
2210 struct e1000_mac_info
*mac
= &hw
->mac
;
2211 struct dev_mc_list
*mc_ptr
;
2216 /* Check for Promiscuous and All Multicast modes */
2220 if (netdev
->flags
& IFF_PROMISC
) {
2221 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2222 rctl
&= ~E1000_RCTL_VFE
;
2224 if (netdev
->flags
& IFF_ALLMULTI
) {
2225 rctl
|= E1000_RCTL_MPE
;
2226 rctl
&= ~E1000_RCTL_UPE
;
2228 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2230 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2231 rctl
|= E1000_RCTL_VFE
;
2236 if (netdev
->mc_count
) {
2237 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2241 /* prepare a packed array of only addresses. */
2242 mc_ptr
= netdev
->mc_list
;
2244 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2247 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2249 mc_ptr
= mc_ptr
->next
;
2252 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2253 mac
->rar_entry_count
);
2257 * if we're called from probe, we might not have
2258 * anything to do here, so clear out the list
2260 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2265 * e1000_configure - configure the hardware for Rx and Tx
2266 * @adapter: private board structure
2268 static void e1000_configure(struct e1000_adapter
*adapter
)
2270 e1000_set_multi(adapter
->netdev
);
2272 e1000_restore_vlan(adapter
);
2273 e1000_init_manageability(adapter
);
2275 e1000_configure_tx(adapter
);
2276 e1000_setup_rctl(adapter
);
2277 e1000_configure_rx(adapter
);
2278 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2282 * e1000e_power_up_phy - restore link in case the phy was powered down
2283 * @adapter: address of board private structure
2285 * The phy may be powered down to save power and turn off link when the
2286 * driver is unloaded and wake on lan is not enabled (among others)
2287 * *** this routine MUST be followed by a call to e1000e_reset ***
2289 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2293 /* Just clear the power down bit to wake the phy back up */
2294 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2296 * According to the manual, the phy will retain its
2297 * settings across a power-down/up cycle
2299 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2300 mii_reg
&= ~MII_CR_POWER_DOWN
;
2301 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2304 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2308 * e1000_power_down_phy - Power down the PHY
2310 * Power down the PHY so no link is implied when interface is down
2311 * The PHY cannot be powered down is management or WoL is active
2313 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2315 struct e1000_hw
*hw
= &adapter
->hw
;
2318 /* WoL is enabled */
2322 /* non-copper PHY? */
2323 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2326 /* reset is blocked because of a SoL/IDER session */
2327 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2330 /* manageability (AMT) is enabled */
2331 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2334 /* power down the PHY */
2335 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2336 mii_reg
|= MII_CR_POWER_DOWN
;
2337 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2342 * e1000e_reset - bring the hardware into a known good state
2344 * This function boots the hardware and enables some settings that
2345 * require a configuration cycle of the hardware - those cannot be
2346 * set/changed during runtime. After reset the device needs to be
2347 * properly configured for Rx, Tx etc.
2349 void e1000e_reset(struct e1000_adapter
*adapter
)
2351 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2352 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2353 struct e1000_hw
*hw
= &adapter
->hw
;
2354 u32 tx_space
, min_tx_space
, min_rx_space
;
2355 u32 pba
= adapter
->pba
;
2358 /* reset Packet Buffer Allocation to default */
2361 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2363 * To maintain wire speed transmits, the Tx FIFO should be
2364 * large enough to accommodate two full transmit packets,
2365 * rounded up to the next 1KB and expressed in KB. Likewise,
2366 * the Rx FIFO should be large enough to accommodate at least
2367 * one full receive packet and is similarly rounded up and
2371 /* upper 16 bits has Tx packet buffer allocation size in KB */
2372 tx_space
= pba
>> 16;
2373 /* lower 16 bits has Rx packet buffer allocation size in KB */
2376 * the Tx fifo also stores 16 bytes of information about the tx
2377 * but don't include ethernet FCS because hardware appends it
2379 min_tx_space
= (adapter
->max_frame_size
+
2380 sizeof(struct e1000_tx_desc
) -
2382 min_tx_space
= ALIGN(min_tx_space
, 1024);
2383 min_tx_space
>>= 10;
2384 /* software strips receive CRC, so leave room for it */
2385 min_rx_space
= adapter
->max_frame_size
;
2386 min_rx_space
= ALIGN(min_rx_space
, 1024);
2387 min_rx_space
>>= 10;
2390 * If current Tx allocation is less than the min Tx FIFO size,
2391 * and the min Tx FIFO size is less than the current Rx FIFO
2392 * allocation, take space away from current Rx allocation
2394 if ((tx_space
< min_tx_space
) &&
2395 ((min_tx_space
- tx_space
) < pba
)) {
2396 pba
-= min_tx_space
- tx_space
;
2399 * if short on Rx space, Rx wins and must trump tx
2400 * adjustment or use Early Receive if available
2402 if ((pba
< min_rx_space
) &&
2403 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2404 /* ERT enabled in e1000_configure_rx */
2413 * flow control settings
2415 * The high water mark must be low enough to fit one full frame
2416 * (or the size used for early receive) above it in the Rx FIFO.
2417 * Set it to the lower of:
2418 * - 90% of the Rx FIFO size, and
2419 * - the full Rx FIFO size minus the early receive size (for parts
2420 * with ERT support assuming ERT set to E1000_ERT_2048), or
2421 * - the full Rx FIFO size minus one full frame
2423 if (adapter
->flags
& FLAG_HAS_ERT
)
2424 hwm
= min(((pba
<< 10) * 9 / 10),
2425 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2427 hwm
= min(((pba
<< 10) * 9 / 10),
2428 ((pba
<< 10) - adapter
->max_frame_size
));
2430 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2431 fc
->low_water
= fc
->high_water
- 8;
2433 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2434 fc
->pause_time
= 0xFFFF;
2436 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2438 fc
->type
= fc
->original_type
;
2440 /* Allow time for pending master requests to run */
2441 mac
->ops
.reset_hw(hw
);
2444 * For parts with AMT enabled, let the firmware know
2445 * that the network interface is in control
2447 if (adapter
->flags
& FLAG_HAS_AMT
)
2448 e1000_get_hw_control(adapter
);
2452 if (mac
->ops
.init_hw(hw
))
2453 e_err("Hardware Error\n");
2455 e1000_update_mng_vlan(adapter
);
2457 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2458 ew32(VET
, ETH_P_8021Q
);
2460 e1000e_reset_adaptive(hw
);
2461 e1000_get_phy_info(hw
);
2463 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2466 * speed up time to link by disabling smart power down, ignore
2467 * the return value of this function because there is nothing
2468 * different we would do if it failed
2470 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2471 phy_data
&= ~IGP02E1000_PM_SPD
;
2472 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2476 int e1000e_up(struct e1000_adapter
*adapter
)
2478 struct e1000_hw
*hw
= &adapter
->hw
;
2480 /* hardware has been reset, we need to reload some things */
2481 e1000_configure(adapter
);
2483 clear_bit(__E1000_DOWN
, &adapter
->state
);
2485 napi_enable(&adapter
->napi
);
2486 e1000_irq_enable(adapter
);
2488 /* fire a link change interrupt to start the watchdog */
2489 ew32(ICS
, E1000_ICS_LSC
);
2493 void e1000e_down(struct e1000_adapter
*adapter
)
2495 struct net_device
*netdev
= adapter
->netdev
;
2496 struct e1000_hw
*hw
= &adapter
->hw
;
2500 * signal that we're down so the interrupt handler does not
2501 * reschedule our watchdog timer
2503 set_bit(__E1000_DOWN
, &adapter
->state
);
2505 /* disable receives in the hardware */
2507 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2508 /* flush and sleep below */
2510 netif_tx_stop_all_queues(netdev
);
2512 /* disable transmits in the hardware */
2514 tctl
&= ~E1000_TCTL_EN
;
2516 /* flush both disables and wait for them to finish */
2520 napi_disable(&adapter
->napi
);
2521 e1000_irq_disable(adapter
);
2523 del_timer_sync(&adapter
->watchdog_timer
);
2524 del_timer_sync(&adapter
->phy_info_timer
);
2526 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2527 netif_carrier_off(netdev
);
2528 adapter
->link_speed
= 0;
2529 adapter
->link_duplex
= 0;
2531 if (!pci_channel_offline(adapter
->pdev
))
2532 e1000e_reset(adapter
);
2533 e1000_clean_tx_ring(adapter
);
2534 e1000_clean_rx_ring(adapter
);
2537 * TODO: for power management, we could drop the link and
2538 * pci_disable_device here.
2542 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2545 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2547 e1000e_down(adapter
);
2549 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2553 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2554 * @adapter: board private structure to initialize
2556 * e1000_sw_init initializes the Adapter private data structure.
2557 * Fields are initialized based on PCI device information and
2558 * OS network device settings (MTU size).
2560 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2562 struct net_device
*netdev
= adapter
->netdev
;
2564 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2565 adapter
->rx_ps_bsize0
= 128;
2566 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2567 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2569 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2570 if (!adapter
->tx_ring
)
2573 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2574 if (!adapter
->rx_ring
)
2577 spin_lock_init(&adapter
->tx_queue_lock
);
2579 /* Explicitly disable IRQ since the NIC can be in any state. */
2580 e1000_irq_disable(adapter
);
2582 spin_lock_init(&adapter
->stats_lock
);
2584 set_bit(__E1000_DOWN
, &adapter
->state
);
2588 e_err("Unable to allocate memory for queues\n");
2589 kfree(adapter
->rx_ring
);
2590 kfree(adapter
->tx_ring
);
2595 * e1000_open - Called when a network interface is made active
2596 * @netdev: network interface device structure
2598 * Returns 0 on success, negative value on failure
2600 * The open entry point is called when a network interface is made
2601 * active by the system (IFF_UP). At this point all resources needed
2602 * for transmit and receive operations are allocated, the interrupt
2603 * handler is registered with the OS, the watchdog timer is started,
2604 * and the stack is notified that the interface is ready.
2606 static int e1000_open(struct net_device
*netdev
)
2608 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2609 struct e1000_hw
*hw
= &adapter
->hw
;
2612 /* disallow open during test */
2613 if (test_bit(__E1000_TESTING
, &adapter
->state
))
2616 /* allocate transmit descriptors */
2617 err
= e1000e_setup_tx_resources(adapter
);
2621 /* allocate receive descriptors */
2622 err
= e1000e_setup_rx_resources(adapter
);
2626 e1000e_power_up_phy(adapter
);
2628 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2629 if ((adapter
->hw
.mng_cookie
.status
&
2630 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
2631 e1000_update_mng_vlan(adapter
);
2634 * If AMT is enabled, let the firmware know that the network
2635 * interface is now open
2637 if (adapter
->flags
& FLAG_HAS_AMT
)
2638 e1000_get_hw_control(adapter
);
2641 * before we allocate an interrupt, we must be ready to handle it.
2642 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
2643 * as soon as we call pci_request_irq, so we have to setup our
2644 * clean_rx handler before we do so.
2646 e1000_configure(adapter
);
2648 err
= e1000_request_irq(adapter
);
2652 /* From here on the code is the same as e1000e_up() */
2653 clear_bit(__E1000_DOWN
, &adapter
->state
);
2655 napi_enable(&adapter
->napi
);
2657 e1000_irq_enable(adapter
);
2659 netif_tx_start_all_queues(netdev
);
2661 /* fire a link status change interrupt to start the watchdog */
2662 ew32(ICS
, E1000_ICS_LSC
);
2667 e1000_release_hw_control(adapter
);
2668 e1000_power_down_phy(adapter
);
2669 e1000e_free_rx_resources(adapter
);
2671 e1000e_free_tx_resources(adapter
);
2673 e1000e_reset(adapter
);
2679 * e1000_close - Disables a network interface
2680 * @netdev: network interface device structure
2682 * Returns 0, this is not allowed to fail
2684 * The close entry point is called when an interface is de-activated
2685 * by the OS. The hardware is still under the drivers control, but
2686 * needs to be disabled. A global MAC reset is issued to stop the
2687 * hardware, and all transmit and receive resources are freed.
2689 static int e1000_close(struct net_device
*netdev
)
2691 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2693 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
2694 e1000e_down(adapter
);
2695 e1000_power_down_phy(adapter
);
2696 e1000_free_irq(adapter
);
2698 e1000e_free_tx_resources(adapter
);
2699 e1000e_free_rx_resources(adapter
);
2702 * kill manageability vlan ID if supported, but not if a vlan with
2703 * the same ID is registered on the host OS (let 8021q kill it)
2705 if ((adapter
->hw
.mng_cookie
.status
&
2706 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2708 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
2709 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2712 * If AMT is enabled, let the firmware know that the network
2713 * interface is now closed
2715 if (adapter
->flags
& FLAG_HAS_AMT
)
2716 e1000_release_hw_control(adapter
);
2721 * e1000_set_mac - Change the Ethernet Address of the NIC
2722 * @netdev: network interface device structure
2723 * @p: pointer to an address structure
2725 * Returns 0 on success, negative on failure
2727 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
2729 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2730 struct sockaddr
*addr
= p
;
2732 if (!is_valid_ether_addr(addr
->sa_data
))
2733 return -EADDRNOTAVAIL
;
2735 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2736 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
2738 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
2740 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
2741 /* activate the work around */
2742 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
2745 * Hold a copy of the LAA in RAR[14] This is done so that
2746 * between the time RAR[0] gets clobbered and the time it
2747 * gets fixed (in e1000_watchdog), the actual LAA is in one
2748 * of the RARs and no incoming packets directed to this port
2749 * are dropped. Eventually the LAA will be in RAR[0] and
2752 e1000e_rar_set(&adapter
->hw
,
2753 adapter
->hw
.mac
.addr
,
2754 adapter
->hw
.mac
.rar_entry_count
- 1);
2761 * Need to wait a few seconds after link up to get diagnostic information from
2764 static void e1000_update_phy_info(unsigned long data
)
2766 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2767 e1000_get_phy_info(&adapter
->hw
);
2771 * e1000e_update_stats - Update the board statistics counters
2772 * @adapter: board private structure
2774 void e1000e_update_stats(struct e1000_adapter
*adapter
)
2776 struct e1000_hw
*hw
= &adapter
->hw
;
2777 struct pci_dev
*pdev
= adapter
->pdev
;
2778 unsigned long irq_flags
;
2781 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2784 * Prevent stats update while adapter is being reset, or if the pci
2785 * connection is down.
2787 if (adapter
->link_speed
== 0)
2789 if (pci_channel_offline(pdev
))
2792 spin_lock_irqsave(&adapter
->stats_lock
, irq_flags
);
2795 * these counters are modified from e1000_adjust_tbi_stats,
2796 * called from the interrupt context, so they must only
2797 * be written while holding adapter->stats_lock
2800 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
2801 adapter
->stats
.gprc
+= er32(GPRC
);
2802 adapter
->stats
.gorc
+= er32(GORCL
);
2803 er32(GORCH
); /* Clear gorc */
2804 adapter
->stats
.bprc
+= er32(BPRC
);
2805 adapter
->stats
.mprc
+= er32(MPRC
);
2806 adapter
->stats
.roc
+= er32(ROC
);
2808 adapter
->stats
.mpc
+= er32(MPC
);
2809 adapter
->stats
.scc
+= er32(SCC
);
2810 adapter
->stats
.ecol
+= er32(ECOL
);
2811 adapter
->stats
.mcc
+= er32(MCC
);
2812 adapter
->stats
.latecol
+= er32(LATECOL
);
2813 adapter
->stats
.dc
+= er32(DC
);
2814 adapter
->stats
.xonrxc
+= er32(XONRXC
);
2815 adapter
->stats
.xontxc
+= er32(XONTXC
);
2816 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
2817 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
2818 adapter
->stats
.gptc
+= er32(GPTC
);
2819 adapter
->stats
.gotc
+= er32(GOTCL
);
2820 er32(GOTCH
); /* Clear gotc */
2821 adapter
->stats
.rnbc
+= er32(RNBC
);
2822 adapter
->stats
.ruc
+= er32(RUC
);
2824 adapter
->stats
.mptc
+= er32(MPTC
);
2825 adapter
->stats
.bptc
+= er32(BPTC
);
2827 /* used for adaptive IFS */
2829 hw
->mac
.tx_packet_delta
= er32(TPT
);
2830 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
2831 hw
->mac
.collision_delta
= er32(COLC
);
2832 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
2834 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
2835 adapter
->stats
.rxerrc
+= er32(RXERRC
);
2836 adapter
->stats
.tncrs
+= er32(TNCRS
);
2837 adapter
->stats
.cexterr
+= er32(CEXTERR
);
2838 adapter
->stats
.tsctc
+= er32(TSCTC
);
2839 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
2841 /* Fill out the OS statistics structure */
2842 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
2843 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
2848 * RLEC on some newer hardware can be incorrect so build
2849 * our own version based on RUC and ROC
2851 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
2852 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
2853 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
2854 adapter
->stats
.cexterr
;
2855 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
2857 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
2858 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
2859 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
2862 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
2863 adapter
->stats
.latecol
;
2864 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
2865 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
2866 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
2868 /* Tx Dropped needs to be maintained elsewhere */
2871 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
2872 if ((adapter
->link_speed
== SPEED_1000
) &&
2873 (!e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
2874 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
2875 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
2879 /* Management Stats */
2880 adapter
->stats
.mgptc
+= er32(MGTPTC
);
2881 adapter
->stats
.mgprc
+= er32(MGTPRC
);
2882 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
2884 spin_unlock_irqrestore(&adapter
->stats_lock
, irq_flags
);
2888 * e1000_phy_read_status - Update the PHY register status snapshot
2889 * @adapter: board private structure
2891 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
2893 struct e1000_hw
*hw
= &adapter
->hw
;
2894 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
2896 unsigned long irq_flags
;
2899 spin_lock_irqsave(&adapter
->stats_lock
, irq_flags
);
2901 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
2902 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
2903 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
2904 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
2905 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
2906 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
2907 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
2908 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
2909 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
2910 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
2912 e_warn("Error reading PHY register\n");
2915 * Do not read PHY registers if link is not up
2916 * Set values to typical power-on defaults
2918 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
2919 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
2920 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
2922 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
2923 ADVERTISE_ALL
| ADVERTISE_CSMA
);
2925 phy
->expansion
= EXPANSION_ENABLENPAGE
;
2926 phy
->ctrl1000
= ADVERTISE_1000FULL
;
2928 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
2931 spin_unlock_irqrestore(&adapter
->stats_lock
, irq_flags
);
2934 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
2936 struct e1000_hw
*hw
= &adapter
->hw
;
2937 u32 ctrl
= er32(CTRL
);
2939 e_info("Link is Up %d Mbps %s, Flow Control: %s\n",
2940 adapter
->link_speed
,
2941 (adapter
->link_duplex
== FULL_DUPLEX
) ?
2942 "Full Duplex" : "Half Duplex",
2943 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
2945 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
2946 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
2949 static bool e1000_has_link(struct e1000_adapter
*adapter
)
2951 struct e1000_hw
*hw
= &adapter
->hw
;
2952 bool link_active
= 0;
2956 * get_link_status is set on LSC (link status) interrupt or
2957 * Rx sequence error interrupt. get_link_status will stay
2958 * false until the check_for_link establishes link
2959 * for copper adapters ONLY
2961 switch (hw
->phy
.media_type
) {
2962 case e1000_media_type_copper
:
2963 if (hw
->mac
.get_link_status
) {
2964 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2965 link_active
= !hw
->mac
.get_link_status
;
2970 case e1000_media_type_fiber
:
2971 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2972 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
2974 case e1000_media_type_internal_serdes
:
2975 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2976 link_active
= adapter
->hw
.mac
.serdes_has_link
;
2979 case e1000_media_type_unknown
:
2983 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
2984 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2985 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
2986 e_info("Gigabit has been disabled, downgrading speed\n");
2992 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
2994 /* make sure the receive unit is started */
2995 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
2996 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
2997 struct e1000_hw
*hw
= &adapter
->hw
;
2998 u32 rctl
= er32(RCTL
);
2999 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3000 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3005 * e1000_watchdog - Timer Call-back
3006 * @data: pointer to adapter cast into an unsigned long
3008 static void e1000_watchdog(unsigned long data
)
3010 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3012 /* Do the rest outside of interrupt context */
3013 schedule_work(&adapter
->watchdog_task
);
3015 /* TODO: make this use queue_delayed_work() */
3018 static void e1000_watchdog_task(struct work_struct
*work
)
3020 struct e1000_adapter
*adapter
= container_of(work
,
3021 struct e1000_adapter
, watchdog_task
);
3022 struct net_device
*netdev
= adapter
->netdev
;
3023 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3024 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3025 struct e1000_hw
*hw
= &adapter
->hw
;
3029 link
= e1000_has_link(adapter
);
3030 if ((netif_carrier_ok(netdev
)) && link
) {
3031 e1000e_enable_receives(adapter
);
3035 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3036 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3037 e1000_update_mng_vlan(adapter
);
3040 if (!netif_carrier_ok(netdev
)) {
3042 /* update snapshot of PHY registers on LSC */
3043 e1000_phy_read_status(adapter
);
3044 mac
->ops
.get_link_up_info(&adapter
->hw
,
3045 &adapter
->link_speed
,
3046 &adapter
->link_duplex
);
3047 e1000_print_link_info(adapter
);
3049 * tweak tx_queue_len according to speed/duplex
3050 * and adjust the timeout factor
3052 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3053 adapter
->tx_timeout_factor
= 1;
3054 switch (adapter
->link_speed
) {
3057 netdev
->tx_queue_len
= 10;
3058 adapter
->tx_timeout_factor
= 14;
3062 netdev
->tx_queue_len
= 100;
3063 /* maybe add some timeout factor ? */
3068 * workaround: re-program speed mode bit after
3071 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3074 tarc0
= er32(TARC(0));
3075 tarc0
&= ~SPEED_MODE_BIT
;
3076 ew32(TARC(0), tarc0
);
3080 * disable TSO for pcie and 10/100 speeds, to avoid
3081 * some hardware issues
3083 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3084 switch (adapter
->link_speed
) {
3087 e_info("10/100 speed: disabling TSO\n");
3088 netdev
->features
&= ~NETIF_F_TSO
;
3089 netdev
->features
&= ~NETIF_F_TSO6
;
3092 netdev
->features
|= NETIF_F_TSO
;
3093 netdev
->features
|= NETIF_F_TSO6
;
3102 * enable transmits in the hardware, need to do this
3103 * after setting TARC(0)
3106 tctl
|= E1000_TCTL_EN
;
3109 netif_carrier_on(netdev
);
3110 netif_tx_wake_all_queues(netdev
);
3112 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3113 mod_timer(&adapter
->phy_info_timer
,
3114 round_jiffies(jiffies
+ 2 * HZ
));
3117 if (netif_carrier_ok(netdev
)) {
3118 adapter
->link_speed
= 0;
3119 adapter
->link_duplex
= 0;
3120 e_info("Link is Down\n");
3121 netif_carrier_off(netdev
);
3122 netif_tx_stop_all_queues(netdev
);
3123 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3124 mod_timer(&adapter
->phy_info_timer
,
3125 round_jiffies(jiffies
+ 2 * HZ
));
3127 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3128 schedule_work(&adapter
->reset_task
);
3133 e1000e_update_stats(adapter
);
3135 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3136 adapter
->tpt_old
= adapter
->stats
.tpt
;
3137 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3138 adapter
->colc_old
= adapter
->stats
.colc
;
3140 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3141 adapter
->gorc_old
= adapter
->stats
.gorc
;
3142 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3143 adapter
->gotc_old
= adapter
->stats
.gotc
;
3145 e1000e_update_adaptive(&adapter
->hw
);
3147 if (!netif_carrier_ok(netdev
)) {
3148 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3152 * We've lost link, so the controller stops DMA,
3153 * but we've got queued Tx work that's never going
3154 * to get done, so reset controller to flush Tx.
3155 * (Do the reset outside of interrupt context).
3157 adapter
->tx_timeout_count
++;
3158 schedule_work(&adapter
->reset_task
);
3162 /* Cause software interrupt to ensure Rx ring is cleaned */
3163 ew32(ICS
, E1000_ICS_RXDMT0
);
3165 /* Force detection of hung controller every watchdog period */
3166 adapter
->detect_tx_hung
= 1;
3169 * With 82571 controllers, LAA may be overwritten due to controller
3170 * reset from the other port. Set the appropriate LAA in RAR[0]
3172 if (e1000e_get_laa_state_82571(hw
))
3173 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3175 /* Reset the timer */
3176 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3177 mod_timer(&adapter
->watchdog_timer
,
3178 round_jiffies(jiffies
+ 2 * HZ
));
3181 #define E1000_TX_FLAGS_CSUM 0x00000001
3182 #define E1000_TX_FLAGS_VLAN 0x00000002
3183 #define E1000_TX_FLAGS_TSO 0x00000004
3184 #define E1000_TX_FLAGS_IPV4 0x00000008
3185 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3186 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3188 static int e1000_tso(struct e1000_adapter
*adapter
,
3189 struct sk_buff
*skb
)
3191 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3192 struct e1000_context_desc
*context_desc
;
3193 struct e1000_buffer
*buffer_info
;
3196 u16 ipcse
= 0, tucse
, mss
;
3197 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3200 if (skb_is_gso(skb
)) {
3201 if (skb_header_cloned(skb
)) {
3202 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3207 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3208 mss
= skb_shinfo(skb
)->gso_size
;
3209 if (skb
->protocol
== htons(ETH_P_IP
)) {
3210 struct iphdr
*iph
= ip_hdr(skb
);
3213 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3217 cmd_length
= E1000_TXD_CMD_IP
;
3218 ipcse
= skb_transport_offset(skb
) - 1;
3219 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3220 ipv6_hdr(skb
)->payload_len
= 0;
3221 tcp_hdr(skb
)->check
=
3222 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3223 &ipv6_hdr(skb
)->daddr
,
3227 ipcss
= skb_network_offset(skb
);
3228 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3229 tucss
= skb_transport_offset(skb
);
3230 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3233 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3234 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3236 i
= tx_ring
->next_to_use
;
3237 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3238 buffer_info
= &tx_ring
->buffer_info
[i
];
3240 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3241 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3242 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3243 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3244 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3245 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3246 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3247 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3248 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3250 buffer_info
->time_stamp
= jiffies
;
3251 buffer_info
->next_to_watch
= i
;
3254 if (i
== tx_ring
->count
)
3256 tx_ring
->next_to_use
= i
;
3264 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3266 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3267 struct e1000_context_desc
*context_desc
;
3268 struct e1000_buffer
*buffer_info
;
3272 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
3273 css
= skb_transport_offset(skb
);
3275 i
= tx_ring
->next_to_use
;
3276 buffer_info
= &tx_ring
->buffer_info
[i
];
3277 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3279 context_desc
->lower_setup
.ip_config
= 0;
3280 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3281 context_desc
->upper_setup
.tcp_fields
.tucso
=
3282 css
+ skb
->csum_offset
;
3283 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3284 context_desc
->tcp_seg_setup
.data
= 0;
3285 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
3287 buffer_info
->time_stamp
= jiffies
;
3288 buffer_info
->next_to_watch
= i
;
3291 if (i
== tx_ring
->count
)
3293 tx_ring
->next_to_use
= i
;
3301 #define E1000_MAX_PER_TXD 8192
3302 #define E1000_MAX_TXD_PWR 12
3304 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3305 struct sk_buff
*skb
, unsigned int first
,
3306 unsigned int max_per_txd
, unsigned int nr_frags
,
3309 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3310 struct e1000_buffer
*buffer_info
;
3311 unsigned int len
= skb
->len
- skb
->data_len
;
3312 unsigned int offset
= 0, size
, count
= 0, i
;
3315 i
= tx_ring
->next_to_use
;
3318 buffer_info
= &tx_ring
->buffer_info
[i
];
3319 size
= min(len
, max_per_txd
);
3321 /* Workaround for premature desc write-backs
3322 * in TSO mode. Append 4-byte sentinel desc */
3323 if (mss
&& !nr_frags
&& size
== len
&& size
> 8)
3326 buffer_info
->length
= size
;
3327 /* set time_stamp *before* dma to help avoid a possible race */
3328 buffer_info
->time_stamp
= jiffies
;
3330 pci_map_single(adapter
->pdev
,
3334 if (pci_dma_mapping_error(adapter
->pdev
, buffer_info
->dma
)) {
3335 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3336 adapter
->tx_dma_failed
++;
3339 buffer_info
->next_to_watch
= i
;
3345 if (i
== tx_ring
->count
)
3349 for (f
= 0; f
< nr_frags
; f
++) {
3350 struct skb_frag_struct
*frag
;
3352 frag
= &skb_shinfo(skb
)->frags
[f
];
3354 offset
= frag
->page_offset
;
3357 buffer_info
= &tx_ring
->buffer_info
[i
];
3358 size
= min(len
, max_per_txd
);
3359 /* Workaround for premature desc write-backs
3360 * in TSO mode. Append 4-byte sentinel desc */
3361 if (mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8)
3364 buffer_info
->length
= size
;
3365 buffer_info
->time_stamp
= jiffies
;
3367 pci_map_page(adapter
->pdev
,
3372 if (pci_dma_mapping_error(adapter
->pdev
,
3373 buffer_info
->dma
)) {
3374 dev_err(&adapter
->pdev
->dev
,
3375 "TX DMA page map failed\n");
3376 adapter
->tx_dma_failed
++;
3380 buffer_info
->next_to_watch
= i
;
3387 if (i
== tx_ring
->count
)
3393 i
= tx_ring
->count
- 1;
3397 tx_ring
->buffer_info
[i
].skb
= skb
;
3398 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3403 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3404 int tx_flags
, int count
)
3406 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3407 struct e1000_tx_desc
*tx_desc
= NULL
;
3408 struct e1000_buffer
*buffer_info
;
3409 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3412 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3413 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3415 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3417 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3418 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3421 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3422 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3423 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3426 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3427 txd_lower
|= E1000_TXD_CMD_VLE
;
3428 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3431 i
= tx_ring
->next_to_use
;
3434 buffer_info
= &tx_ring
->buffer_info
[i
];
3435 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3436 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3437 tx_desc
->lower
.data
=
3438 cpu_to_le32(txd_lower
| buffer_info
->length
);
3439 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3442 if (i
== tx_ring
->count
)
3446 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3449 * Force memory writes to complete before letting h/w
3450 * know there are new descriptors to fetch. (Only
3451 * applicable for weak-ordered memory model archs,
3456 tx_ring
->next_to_use
= i
;
3457 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3459 * we need this if more than one processor can write to our tail
3460 * at a time, it synchronizes IO on IA64/Altix systems
3465 #define MINIMUM_DHCP_PACKET_SIZE 282
3466 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3467 struct sk_buff
*skb
)
3469 struct e1000_hw
*hw
= &adapter
->hw
;
3472 if (vlan_tx_tag_present(skb
)) {
3473 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3474 && (adapter
->hw
.mng_cookie
.status
&
3475 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3479 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3482 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
3486 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
3489 if (ip
->protocol
!= IPPROTO_UDP
)
3492 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
3493 if (ntohs(udp
->dest
) != 67)
3496 offset
= (u8
*)udp
+ 8 - skb
->data
;
3497 length
= skb
->len
- offset
;
3498 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
3504 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3506 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3508 netif_stop_queue(netdev
);
3510 * Herbert's original patch had:
3511 * smp_mb__after_netif_stop_queue();
3512 * but since that doesn't exist yet, just open code it.
3517 * We need to check again in a case another CPU has just
3518 * made room available.
3520 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
3524 netif_start_queue(netdev
);
3525 ++adapter
->restart_queue
;
3529 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3531 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3533 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
3535 return __e1000_maybe_stop_tx(netdev
, size
);
3538 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3539 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3541 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3542 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3544 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
3545 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3546 unsigned int tx_flags
= 0;
3547 unsigned int len
= skb
->len
- skb
->data_len
;
3548 unsigned long irq_flags
;
3549 unsigned int nr_frags
;
3555 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
3556 dev_kfree_skb_any(skb
);
3557 return NETDEV_TX_OK
;
3560 if (skb
->len
<= 0) {
3561 dev_kfree_skb_any(skb
);
3562 return NETDEV_TX_OK
;
3565 mss
= skb_shinfo(skb
)->gso_size
;
3567 * The controller does a simple calculation to
3568 * make sure there is enough room in the FIFO before
3569 * initiating the DMA for each buffer. The calc is:
3570 * 4 = ceil(buffer len/mss). To make sure we don't
3571 * overrun the FIFO, adjust the max buffer len if mss
3576 max_per_txd
= min(mss
<< 2, max_per_txd
);
3577 max_txd_pwr
= fls(max_per_txd
) - 1;
3580 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
3581 * points to just header, pull a few bytes of payload from
3582 * frags into skb->data
3584 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3586 * we do this workaround for ES2LAN, but it is un-necessary,
3587 * avoiding it could save a lot of cycles
3589 if (skb
->data_len
&& (hdr_len
== len
)) {
3590 unsigned int pull_size
;
3592 pull_size
= min((unsigned int)4, skb
->data_len
);
3593 if (!__pskb_pull_tail(skb
, pull_size
)) {
3594 e_err("__pskb_pull_tail failed.\n");
3595 dev_kfree_skb_any(skb
);
3596 return NETDEV_TX_OK
;
3598 len
= skb
->len
- skb
->data_len
;
3602 /* reserve a descriptor for the offload context */
3603 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3607 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3609 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3610 for (f
= 0; f
< nr_frags
; f
++)
3611 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3614 if (adapter
->hw
.mac
.tx_pkt_filtering
)
3615 e1000_transfer_dhcp_info(adapter
, skb
);
3617 if (!spin_trylock_irqsave(&adapter
->tx_queue_lock
, irq_flags
))
3618 /* Collision - tell upper layer to requeue */
3619 return NETDEV_TX_LOCKED
;
3622 * need: count + 2 desc gap to keep tail from touching
3623 * head, otherwise try next time
3625 if (e1000_maybe_stop_tx(netdev
, count
+ 2)) {
3626 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3627 return NETDEV_TX_BUSY
;
3630 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
3631 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3632 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3635 first
= tx_ring
->next_to_use
;
3637 tso
= e1000_tso(adapter
, skb
);
3639 dev_kfree_skb_any(skb
);
3640 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3641 return NETDEV_TX_OK
;
3645 tx_flags
|= E1000_TX_FLAGS_TSO
;
3646 else if (e1000_tx_csum(adapter
, skb
))
3647 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3650 * Old method was to assume IPv4 packet by default if TSO was enabled.
3651 * 82571 hardware supports TSO capabilities for IPv6 as well...
3652 * no longer assume, we must.
3654 if (skb
->protocol
== htons(ETH_P_IP
))
3655 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3657 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
3659 /* handle pci_map_single() error in e1000_tx_map */
3660 dev_kfree_skb_any(skb
);
3661 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3662 return NETDEV_TX_OK
;
3665 e1000_tx_queue(adapter
, tx_flags
, count
);
3667 netdev
->trans_start
= jiffies
;
3669 /* Make sure there is space in the ring for the next send. */
3670 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
3672 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3673 return NETDEV_TX_OK
;
3677 * e1000_tx_timeout - Respond to a Tx Hang
3678 * @netdev: network interface device structure
3680 static void e1000_tx_timeout(struct net_device
*netdev
)
3682 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3684 /* Do the reset outside of interrupt context */
3685 adapter
->tx_timeout_count
++;
3686 schedule_work(&adapter
->reset_task
);
3689 static void e1000_reset_task(struct work_struct
*work
)
3691 struct e1000_adapter
*adapter
;
3692 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
3694 e1000e_reinit_locked(adapter
);
3698 * e1000_get_stats - Get System Network Statistics
3699 * @netdev: network interface device structure
3701 * Returns the address of the device statistics structure.
3702 * The statistics are actually updated from the timer callback.
3704 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
3706 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3708 /* only return the current stats */
3709 return &adapter
->net_stats
;
3713 * e1000_change_mtu - Change the Maximum Transfer Unit
3714 * @netdev: network interface device structure
3715 * @new_mtu: new value for maximum frame size
3717 * Returns 0 on success, negative on failure
3719 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3721 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3722 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3724 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
3725 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3726 e_err("Invalid MTU setting\n");
3730 /* Jumbo frame size limits */
3731 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3732 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
3733 e_err("Jumbo Frames not supported.\n");
3736 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
3737 e_err("Jumbo Frames not supported.\n");
3742 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3743 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3744 e_err("MTU > 9216 not supported.\n");
3748 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3750 /* e1000e_down has a dependency on max_frame_size */
3751 adapter
->max_frame_size
= max_frame
;
3752 if (netif_running(netdev
))
3753 e1000e_down(adapter
);
3756 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3757 * means we reserve 2 more, this pushes us to allocate from the next
3759 * i.e. RXBUFFER_2048 --> size-4096 slab
3760 * However with the new *_jumbo_rx* routines, jumbo receives will use
3764 if (max_frame
<= 256)
3765 adapter
->rx_buffer_len
= 256;
3766 else if (max_frame
<= 512)
3767 adapter
->rx_buffer_len
= 512;
3768 else if (max_frame
<= 1024)
3769 adapter
->rx_buffer_len
= 1024;
3770 else if (max_frame
<= 2048)
3771 adapter
->rx_buffer_len
= 2048;
3773 adapter
->rx_buffer_len
= 4096;
3775 /* adjust allocation if LPE protects us, and we aren't using SBP */
3776 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
3777 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
3778 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
3781 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
3782 netdev
->mtu
= new_mtu
;
3784 if (netif_running(netdev
))
3787 e1000e_reset(adapter
);
3789 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3794 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
3797 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3798 struct mii_ioctl_data
*data
= if_mii(ifr
);
3800 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
3805 data
->phy_id
= adapter
->hw
.phy
.addr
;
3808 if (!capable(CAP_NET_ADMIN
))
3810 switch (data
->reg_num
& 0x1F) {
3812 data
->val_out
= adapter
->phy_regs
.bmcr
;
3815 data
->val_out
= adapter
->phy_regs
.bmsr
;
3818 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
3821 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
3824 data
->val_out
= adapter
->phy_regs
.advertise
;
3827 data
->val_out
= adapter
->phy_regs
.lpa
;
3830 data
->val_out
= adapter
->phy_regs
.expansion
;
3833 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
3836 data
->val_out
= adapter
->phy_regs
.stat1000
;
3839 data
->val_out
= adapter
->phy_regs
.estatus
;
3852 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3858 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3864 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3866 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3867 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3868 struct e1000_hw
*hw
= &adapter
->hw
;
3869 u32 ctrl
, ctrl_ext
, rctl
, status
;
3870 u32 wufc
= adapter
->wol
;
3873 netif_device_detach(netdev
);
3875 if (netif_running(netdev
)) {
3876 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3877 e1000e_down(adapter
);
3878 e1000_free_irq(adapter
);
3881 retval
= pci_save_state(pdev
);
3885 status
= er32(STATUS
);
3886 if (status
& E1000_STATUS_LU
)
3887 wufc
&= ~E1000_WUFC_LNKC
;
3890 e1000_setup_rctl(adapter
);
3891 e1000_set_multi(netdev
);
3893 /* turn on all-multi mode if wake on multicast is enabled */
3894 if (wufc
& E1000_WUFC_MC
) {
3896 rctl
|= E1000_RCTL_MPE
;
3901 /* advertise wake from D3Cold */
3902 #define E1000_CTRL_ADVD3WUC 0x00100000
3903 /* phy power management enable */
3904 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3905 ctrl
|= E1000_CTRL_ADVD3WUC
|
3906 E1000_CTRL_EN_PHY_PWR_MGMT
;
3909 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
3910 adapter
->hw
.phy
.media_type
==
3911 e1000_media_type_internal_serdes
) {
3912 /* keep the laser running in D3 */
3913 ctrl_ext
= er32(CTRL_EXT
);
3914 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
3915 ew32(CTRL_EXT
, ctrl_ext
);
3918 if (adapter
->flags
& FLAG_IS_ICH
)
3919 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
3921 /* Allow time for pending master requests to run */
3922 e1000e_disable_pcie_master(&adapter
->hw
);
3924 ew32(WUC
, E1000_WUC_PME_EN
);
3926 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3927 pci_enable_wake(pdev
, PCI_D3cold
, 1);
3931 pci_enable_wake(pdev
, PCI_D3hot
, 0);
3932 pci_enable_wake(pdev
, PCI_D3cold
, 0);
3935 /* make sure adapter isn't asleep if manageability is enabled */
3936 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
) {
3937 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3938 pci_enable_wake(pdev
, PCI_D3cold
, 1);
3941 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
3942 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
3945 * Release control of h/w to f/w. If f/w is AMT enabled, this
3946 * would have already happened in close and is redundant.
3948 e1000_release_hw_control(adapter
);
3950 pci_disable_device(pdev
);
3952 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3957 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
3963 * 82573 workaround - disable L1 ASPM on mobile chipsets
3965 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
3966 * resulting in lost data or garbage information on the pci-e link
3967 * level. This could result in (false) bad EEPROM checksum errors,
3968 * long ping times (up to 2s) or even a system freeze/hang.
3970 * Unfortunately this feature saves about 1W power consumption when
3973 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
3974 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
3976 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
3978 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
3983 static int e1000_resume(struct pci_dev
*pdev
)
3985 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3986 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3987 struct e1000_hw
*hw
= &adapter
->hw
;
3990 pci_set_power_state(pdev
, PCI_D0
);
3991 pci_restore_state(pdev
);
3992 e1000e_disable_l1aspm(pdev
);
3994 if (adapter
->need_ioport
)
3995 err
= pci_enable_device(pdev
);
3997 err
= pci_enable_device_mem(pdev
);
4000 "Cannot enable PCI device from suspend\n");
4004 pci_set_master(pdev
);
4006 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4007 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4009 if (netif_running(netdev
)) {
4010 err
= e1000_request_irq(adapter
);
4015 e1000e_power_up_phy(adapter
);
4016 e1000e_reset(adapter
);
4019 e1000_init_manageability(adapter
);
4021 if (netif_running(netdev
))
4024 netif_device_attach(netdev
);
4027 * If the controller has AMT, do not set DRV_LOAD until the interface
4028 * is up. For all other cases, let the f/w know that the h/w is now
4029 * under the control of the driver.
4031 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4032 e1000_get_hw_control(adapter
);
4038 static void e1000_shutdown(struct pci_dev
*pdev
)
4040 e1000_suspend(pdev
, PMSG_SUSPEND
);
4043 #ifdef CONFIG_NET_POLL_CONTROLLER
4045 * Polling 'interrupt' - used by things like netconsole to send skbs
4046 * without having to re-enable interrupts. It's not called while
4047 * the interrupt routine is executing.
4049 static void e1000_netpoll(struct net_device
*netdev
)
4051 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4053 disable_irq(adapter
->pdev
->irq
);
4054 e1000_intr(adapter
->pdev
->irq
, netdev
);
4056 enable_irq(adapter
->pdev
->irq
);
4061 * e1000_io_error_detected - called when PCI error is detected
4062 * @pdev: Pointer to PCI device
4063 * @state: The current pci connection state
4065 * This function is called after a PCI bus error affecting
4066 * this device has been detected.
4068 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4069 pci_channel_state_t state
)
4071 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4072 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4074 netif_device_detach(netdev
);
4076 if (netif_running(netdev
))
4077 e1000e_down(adapter
);
4078 pci_disable_device(pdev
);
4080 /* Request a slot slot reset. */
4081 return PCI_ERS_RESULT_NEED_RESET
;
4085 * e1000_io_slot_reset - called after the pci bus has been reset.
4086 * @pdev: Pointer to PCI device
4088 * Restart the card from scratch, as if from a cold-boot. Implementation
4089 * resembles the first-half of the e1000_resume routine.
4091 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4093 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4094 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4095 struct e1000_hw
*hw
= &adapter
->hw
;
4098 e1000e_disable_l1aspm(pdev
);
4099 if (adapter
->need_ioport
)
4100 err
= pci_enable_device(pdev
);
4102 err
= pci_enable_device_mem(pdev
);
4105 "Cannot re-enable PCI device after reset.\n");
4106 return PCI_ERS_RESULT_DISCONNECT
;
4108 pci_set_master(pdev
);
4109 pci_restore_state(pdev
);
4111 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4112 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4114 e1000e_reset(adapter
);
4117 return PCI_ERS_RESULT_RECOVERED
;
4121 * e1000_io_resume - called when traffic can start flowing again.
4122 * @pdev: Pointer to PCI device
4124 * This callback is called when the error recovery driver tells us that
4125 * its OK to resume normal operation. Implementation resembles the
4126 * second-half of the e1000_resume routine.
4128 static void e1000_io_resume(struct pci_dev
*pdev
)
4130 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4131 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4133 e1000_init_manageability(adapter
);
4135 if (netif_running(netdev
)) {
4136 if (e1000e_up(adapter
)) {
4138 "can't bring device back up after reset\n");
4143 netif_device_attach(netdev
);
4146 * If the controller has AMT, do not set DRV_LOAD until the interface
4147 * is up. For all other cases, let the f/w know that the h/w is now
4148 * under the control of the driver.
4150 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4151 e1000_get_hw_control(adapter
);
4155 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4157 struct e1000_hw
*hw
= &adapter
->hw
;
4158 struct net_device
*netdev
= adapter
->netdev
;
4161 /* print bus type/speed/width info */
4162 e_info("(PCI Express:2.5GB/s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n",
4164 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4167 netdev
->dev_addr
[0], netdev
->dev_addr
[1],
4168 netdev
->dev_addr
[2], netdev
->dev_addr
[3],
4169 netdev
->dev_addr
[4], netdev
->dev_addr
[5]);
4170 e_info("Intel(R) PRO/%s Network Connection\n",
4171 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4172 e1000e_read_pba_num(hw
, &pba_num
);
4173 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4174 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4177 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4179 struct e1000_hw
*hw
= &adapter
->hw
;
4183 if (hw
->mac
.type
!= e1000_82573
)
4186 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4187 if (!(le16_to_cpu(buf
) & (1 << 0))) {
4188 /* Deep Smart Power Down (DSPD) */
4189 e_warn("Warning: detected DSPD enabled in EEPROM\n");
4192 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4193 if (le16_to_cpu(buf
) & (3 << 2)) {
4195 e_warn("Warning: detected ASPM enabled in EEPROM\n");
4200 * e1000e_is_need_ioport - determine if an adapter needs ioport resources or not
4201 * @pdev: PCI device information struct
4203 * Returns true if an adapters needs ioport resources
4205 static int e1000e_is_need_ioport(struct pci_dev
*pdev
)
4207 switch (pdev
->device
) {
4208 /* Currently there are no adapters that need ioport resources */
4215 * e1000_probe - Device Initialization Routine
4216 * @pdev: PCI device information struct
4217 * @ent: entry in e1000_pci_tbl
4219 * Returns 0 on success, negative on failure
4221 * e1000_probe initializes an adapter identified by a pci_dev structure.
4222 * The OS initialization, configuring of the adapter private structure,
4223 * and a hardware reset occur.
4225 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4226 const struct pci_device_id
*ent
)
4228 struct net_device
*netdev
;
4229 struct e1000_adapter
*adapter
;
4230 struct e1000_hw
*hw
;
4231 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4232 resource_size_t mmio_start
, mmio_len
;
4233 resource_size_t flash_start
, flash_len
;
4235 static int cards_found
;
4236 int i
, err
, pci_using_dac
;
4237 u16 eeprom_data
= 0;
4238 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4239 int bars
, need_ioport
;
4241 e1000e_disable_l1aspm(pdev
);
4243 /* do not allocate ioport bars when not needed */
4244 need_ioport
= e1000e_is_need_ioport(pdev
);
4246 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
4247 err
= pci_enable_device(pdev
);
4249 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
4250 err
= pci_enable_device_mem(pdev
);
4256 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
4258 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
4262 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
4264 err
= pci_set_consistent_dma_mask(pdev
,
4267 dev_err(&pdev
->dev
, "No usable DMA "
4268 "configuration, aborting\n");
4274 err
= pci_request_selected_regions(pdev
, bars
, e1000e_driver_name
);
4278 pci_set_master(pdev
);
4279 pci_save_state(pdev
);
4282 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4284 goto err_alloc_etherdev
;
4286 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4288 pci_set_drvdata(pdev
, netdev
);
4289 adapter
= netdev_priv(netdev
);
4291 adapter
->netdev
= netdev
;
4292 adapter
->pdev
= pdev
;
4294 adapter
->pba
= ei
->pba
;
4295 adapter
->flags
= ei
->flags
;
4296 adapter
->hw
.adapter
= adapter
;
4297 adapter
->hw
.mac
.type
= ei
->mac
;
4298 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4299 adapter
->bars
= bars
;
4300 adapter
->need_ioport
= need_ioport
;
4302 mmio_start
= pci_resource_start(pdev
, 0);
4303 mmio_len
= pci_resource_len(pdev
, 0);
4306 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4307 if (!adapter
->hw
.hw_addr
)
4310 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4311 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4312 flash_start
= pci_resource_start(pdev
, 1);
4313 flash_len
= pci_resource_len(pdev
, 1);
4314 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4315 if (!adapter
->hw
.flash_address
)
4319 /* construct the net_device struct */
4320 netdev
->open
= &e1000_open
;
4321 netdev
->stop
= &e1000_close
;
4322 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
4323 netdev
->get_stats
= &e1000_get_stats
;
4324 netdev
->set_multicast_list
= &e1000_set_multi
;
4325 netdev
->set_mac_address
= &e1000_set_mac
;
4326 netdev
->change_mtu
= &e1000_change_mtu
;
4327 netdev
->do_ioctl
= &e1000_ioctl
;
4328 e1000e_set_ethtool_ops(netdev
);
4329 netdev
->tx_timeout
= &e1000_tx_timeout
;
4330 netdev
->watchdog_timeo
= 5 * HZ
;
4331 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4332 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
4333 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
4334 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
4335 #ifdef CONFIG_NET_POLL_CONTROLLER
4336 netdev
->poll_controller
= e1000_netpoll
;
4338 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4340 netdev
->mem_start
= mmio_start
;
4341 netdev
->mem_end
= mmio_start
+ mmio_len
;
4343 adapter
->bd_number
= cards_found
++;
4345 /* setup adapter struct */
4346 err
= e1000_sw_init(adapter
);
4352 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4353 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4354 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4356 err
= ei
->get_variants(adapter
);
4360 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4362 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4364 /* Copper options */
4365 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4366 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4367 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4368 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4371 if (e1000_check_reset_block(&adapter
->hw
))
4372 e_info("PHY reset is blocked due to SOL/IDER session.\n");
4374 netdev
->features
= NETIF_F_SG
|
4376 NETIF_F_HW_VLAN_TX
|
4379 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4380 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4382 netdev
->features
|= NETIF_F_TSO
;
4383 netdev
->features
|= NETIF_F_TSO6
;
4385 netdev
->vlan_features
|= NETIF_F_TSO
;
4386 netdev
->vlan_features
|= NETIF_F_TSO6
;
4387 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4388 netdev
->vlan_features
|= NETIF_F_SG
;
4391 netdev
->features
|= NETIF_F_HIGHDMA
;
4394 * We should not be using LLTX anymore, but we are still Tx faster with
4397 netdev
->features
|= NETIF_F_LLTX
;
4399 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4400 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4403 * before reading the NVM, reset the controller to
4404 * put the device in a known good starting state
4406 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4409 * systems with ASPM and others may see the checksum fail on the first
4410 * attempt. Let's give it a few tries
4413 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4416 e_err("The NVM Checksum Is Not Valid\n");
4422 e1000_eeprom_checks(adapter
);
4424 /* copy the MAC address out of the NVM */
4425 if (e1000e_read_mac_addr(&adapter
->hw
))
4426 e_err("NVM Read Error while reading MAC address\n");
4428 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4429 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4431 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4432 e_err("Invalid MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
4433 netdev
->perm_addr
[0], netdev
->perm_addr
[1],
4434 netdev
->perm_addr
[2], netdev
->perm_addr
[3],
4435 netdev
->perm_addr
[4], netdev
->perm_addr
[5]);
4440 init_timer(&adapter
->watchdog_timer
);
4441 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4442 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4444 init_timer(&adapter
->phy_info_timer
);
4445 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4446 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4448 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4449 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4451 e1000e_check_options(adapter
);
4453 /* Initialize link parameters. User can change them with ethtool */
4454 adapter
->hw
.mac
.autoneg
= 1;
4455 adapter
->fc_autoneg
= 1;
4456 adapter
->hw
.fc
.original_type
= e1000_fc_default
;
4457 adapter
->hw
.fc
.type
= e1000_fc_default
;
4458 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4460 /* ring size defaults */
4461 adapter
->rx_ring
->count
= 256;
4462 adapter
->tx_ring
->count
= 256;
4465 * Initial Wake on LAN setting - If APM wake is enabled in
4466 * the EEPROM, enable the ACPI Magic Packet filter
4468 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4469 /* APME bit in EEPROM is mapped to WUC.APME */
4470 eeprom_data
= er32(WUC
);
4471 eeprom_apme_mask
= E1000_WUC_APME
;
4472 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
4473 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
4474 (adapter
->hw
.bus
.func
== 1))
4475 e1000_read_nvm(&adapter
->hw
,
4476 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
4478 e1000_read_nvm(&adapter
->hw
,
4479 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
4482 /* fetch WoL from EEPROM */
4483 if (eeprom_data
& eeprom_apme_mask
)
4484 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
4487 * now that we have the eeprom settings, apply the special cases
4488 * where the eeprom may be wrong or the board simply won't support
4489 * wake on lan on a particular port
4491 if (!(adapter
->flags
& FLAG_HAS_WOL
))
4492 adapter
->eeprom_wol
= 0;
4494 /* initialize the wol settings based on the eeprom settings */
4495 adapter
->wol
= adapter
->eeprom_wol
;
4497 /* reset the hardware with the new settings */
4498 e1000e_reset(adapter
);
4501 * If the controller has AMT, do not set DRV_LOAD until the interface
4502 * is up. For all other cases, let the f/w know that the h/w is now
4503 * under the control of the driver.
4505 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4506 e1000_get_hw_control(adapter
);
4508 /* tell the stack to leave us alone until e1000_open() is called */
4509 netif_carrier_off(netdev
);
4510 netif_tx_stop_all_queues(netdev
);
4512 strcpy(netdev
->name
, "eth%d");
4513 err
= register_netdev(netdev
);
4517 e1000_print_device_info(adapter
);
4522 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4523 e1000_release_hw_control(adapter
);
4525 if (!e1000_check_reset_block(&adapter
->hw
))
4526 e1000_phy_hw_reset(&adapter
->hw
);
4529 kfree(adapter
->tx_ring
);
4530 kfree(adapter
->rx_ring
);
4532 if (adapter
->hw
.flash_address
)
4533 iounmap(adapter
->hw
.flash_address
);
4535 iounmap(adapter
->hw
.hw_addr
);
4537 free_netdev(netdev
);
4539 pci_release_selected_regions(pdev
, bars
);
4542 pci_disable_device(pdev
);
4547 * e1000_remove - Device Removal Routine
4548 * @pdev: PCI device information struct
4550 * e1000_remove is called by the PCI subsystem to alert the driver
4551 * that it should release a PCI device. The could be caused by a
4552 * Hot-Plug event, or because the driver is going to be removed from
4555 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
4557 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4558 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4561 * flush_scheduled work may reschedule our watchdog task, so
4562 * explicitly disable watchdog tasks from being rescheduled
4564 set_bit(__E1000_DOWN
, &adapter
->state
);
4565 del_timer_sync(&adapter
->watchdog_timer
);
4566 del_timer_sync(&adapter
->phy_info_timer
);
4568 flush_scheduled_work();
4571 * Release control of h/w to f/w. If f/w is AMT enabled, this
4572 * would have already happened in close and is redundant.
4574 e1000_release_hw_control(adapter
);
4576 unregister_netdev(netdev
);
4578 if (!e1000_check_reset_block(&adapter
->hw
))
4579 e1000_phy_hw_reset(&adapter
->hw
);
4581 kfree(adapter
->tx_ring
);
4582 kfree(adapter
->rx_ring
);
4584 iounmap(adapter
->hw
.hw_addr
);
4585 if (adapter
->hw
.flash_address
)
4586 iounmap(adapter
->hw
.flash_address
);
4587 pci_release_selected_regions(pdev
, adapter
->bars
);
4589 free_netdev(netdev
);
4591 pci_disable_device(pdev
);
4594 /* PCI Error Recovery (ERS) */
4595 static struct pci_error_handlers e1000_err_handler
= {
4596 .error_detected
= e1000_io_error_detected
,
4597 .slot_reset
= e1000_io_slot_reset
,
4598 .resume
= e1000_io_resume
,
4601 static struct pci_device_id e1000_pci_tbl
[] = {
4602 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
4603 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
4604 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
4605 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
4606 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
4607 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
4608 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
4609 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
4610 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
4612 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
4613 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
4614 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
4615 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
4617 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
4618 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
4619 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
4621 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
4622 board_80003es2lan
},
4623 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
4624 board_80003es2lan
},
4625 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
4626 board_80003es2lan
},
4627 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
4628 board_80003es2lan
},
4630 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
4631 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
4632 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
4633 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
4634 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
4635 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
4636 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
4638 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
4639 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
4640 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
4641 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
4642 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
4643 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
4644 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
4645 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
4647 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
4648 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
4649 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
4651 { } /* terminate list */
4653 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
4655 /* PCI Device API Driver */
4656 static struct pci_driver e1000_driver
= {
4657 .name
= e1000e_driver_name
,
4658 .id_table
= e1000_pci_tbl
,
4659 .probe
= e1000_probe
,
4660 .remove
= __devexit_p(e1000_remove
),
4662 /* Power Management Hooks */
4663 .suspend
= e1000_suspend
,
4664 .resume
= e1000_resume
,
4666 .shutdown
= e1000_shutdown
,
4667 .err_handler
= &e1000_err_handler
4671 * e1000_init_module - Driver Registration Routine
4673 * e1000_init_module is the first routine called when the driver is
4674 * loaded. All it does is register with the PCI subsystem.
4676 static int __init
e1000_init_module(void)
4679 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
4680 e1000e_driver_name
, e1000e_driver_version
);
4681 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
4682 e1000e_driver_name
);
4683 ret
= pci_register_driver(&e1000_driver
);
4684 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
4685 PM_QOS_DEFAULT_VALUE
);
4689 module_init(e1000_init_module
);
4692 * e1000_exit_module - Driver Exit Cleanup Routine
4694 * e1000_exit_module is called just before the driver is removed
4697 static void __exit
e1000_exit_module(void)
4699 pci_unregister_driver(&e1000_driver
);
4700 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
4702 module_exit(e1000_exit_module
);
4705 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
4706 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
4707 MODULE_LICENSE("GPL");
4708 MODULE_VERSION(DRV_VERSION
);