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(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(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(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 ndev_dbg(netdev
, "%s: Receive packet consumed "
488 "multiple buffers\n", netdev
->name
);
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
);
579 struct net_device
*netdev
= adapter
->netdev
;
581 /* detected Tx unit hang */
583 "Detected Tx Unit Hang:\n"
586 " next_to_use <%x>\n"
587 " next_to_clean <%x>\n"
588 "buffer_info[next_to_clean]:\n"
589 " time_stamp <%lx>\n"
590 " next_to_watch <%x>\n"
592 " next_to_watch.status <%x>\n",
593 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
594 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
595 tx_ring
->next_to_use
,
596 tx_ring
->next_to_clean
,
597 tx_ring
->buffer_info
[eop
].time_stamp
,
600 eop_desc
->upper
.fields
.status
);
604 * e1000_clean_tx_irq - Reclaim resources after transmit completes
605 * @adapter: board private structure
607 * the return value indicates whether actual cleaning was done, there
608 * is no guarantee that everything was cleaned
610 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
612 struct net_device
*netdev
= adapter
->netdev
;
613 struct e1000_hw
*hw
= &adapter
->hw
;
614 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
615 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
616 struct e1000_buffer
*buffer_info
;
618 unsigned int count
= 0;
620 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
622 i
= tx_ring
->next_to_clean
;
623 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
624 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
626 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
627 for (cleaned
= 0; !cleaned
; ) {
628 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
629 buffer_info
= &tx_ring
->buffer_info
[i
];
630 cleaned
= (i
== eop
);
633 struct sk_buff
*skb
= buffer_info
->skb
;
634 unsigned int segs
, bytecount
;
635 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
636 /* multiply data chunks by size of headers */
637 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
639 total_tx_packets
+= segs
;
640 total_tx_bytes
+= bytecount
;
643 e1000_put_txbuf(adapter
, buffer_info
);
644 tx_desc
->upper
.data
= 0;
647 if (i
== tx_ring
->count
)
651 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
652 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
653 #define E1000_TX_WEIGHT 64
654 /* weight of a sort for tx, to avoid endless transmit cleanup */
655 if (count
++ == E1000_TX_WEIGHT
)
659 tx_ring
->next_to_clean
= i
;
661 #define TX_WAKE_THRESHOLD 32
662 if (cleaned
&& netif_carrier_ok(netdev
) &&
663 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
664 /* Make sure that anybody stopping the queue after this
665 * sees the new next_to_clean.
669 if (netif_queue_stopped(netdev
) &&
670 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
671 netif_wake_queue(netdev
);
672 ++adapter
->restart_queue
;
676 if (adapter
->detect_tx_hung
) {
678 * Detect a transmit hang in hardware, this serializes the
679 * check with the clearing of time_stamp and movement of i
681 adapter
->detect_tx_hung
= 0;
682 if (tx_ring
->buffer_info
[eop
].dma
&&
683 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
684 + (adapter
->tx_timeout_factor
* HZ
))
685 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
686 e1000_print_tx_hang(adapter
);
687 netif_stop_queue(netdev
);
690 adapter
->total_tx_bytes
+= total_tx_bytes
;
691 adapter
->total_tx_packets
+= total_tx_packets
;
692 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
693 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
698 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
699 * @adapter: board private structure
701 * the return value indicates whether actual cleaning was done, there
702 * is no guarantee that everything was cleaned
704 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
705 int *work_done
, int work_to_do
)
707 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
708 struct net_device
*netdev
= adapter
->netdev
;
709 struct pci_dev
*pdev
= adapter
->pdev
;
710 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
711 struct e1000_buffer
*buffer_info
, *next_buffer
;
712 struct e1000_ps_page
*ps_page
;
716 int cleaned_count
= 0;
718 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
720 i
= rx_ring
->next_to_clean
;
721 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
722 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
723 buffer_info
= &rx_ring
->buffer_info
[i
];
725 while (staterr
& E1000_RXD_STAT_DD
) {
726 if (*work_done
>= work_to_do
)
729 skb
= buffer_info
->skb
;
731 /* in the packet split case this is header only */
732 prefetch(skb
->data
- NET_IP_ALIGN
);
735 if (i
== rx_ring
->count
)
737 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
740 next_buffer
= &rx_ring
->buffer_info
[i
];
744 pci_unmap_single(pdev
, buffer_info
->dma
,
745 adapter
->rx_ps_bsize0
,
747 buffer_info
->dma
= 0;
749 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
750 ndev_dbg(netdev
, "%s: Packet Split buffers didn't pick "
751 "up the full packet\n", netdev
->name
);
752 dev_kfree_skb_irq(skb
);
756 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
757 dev_kfree_skb_irq(skb
);
761 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
764 ndev_dbg(netdev
, "%s: Last part of the packet spanning"
765 " multiple descriptors\n", netdev
->name
);
766 dev_kfree_skb_irq(skb
);
771 skb_put(skb
, length
);
775 * this looks ugly, but it seems compiler issues make it
776 * more efficient than reusing j
778 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
781 * page alloc/put takes too long and effects small packet
782 * throughput, so unsplit small packets and save the alloc/put
783 * only valid in softirq (napi) context to call kmap_*
785 if (l1
&& (l1
<= copybreak
) &&
786 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
789 ps_page
= &buffer_info
->ps_pages
[0];
792 * there is no documentation about how to call
793 * kmap_atomic, so we can't hold the mapping
796 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
797 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
798 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
799 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
800 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
801 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
802 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
809 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
810 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
814 ps_page
= &buffer_info
->ps_pages
[j
];
815 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
818 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
819 ps_page
->page
= NULL
;
821 skb
->data_len
+= length
;
822 skb
->truesize
+= length
;
826 total_rx_bytes
+= skb
->len
;
829 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
830 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
832 if (rx_desc
->wb
.upper
.header_status
&
833 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
834 adapter
->rx_hdr_split
++;
836 e1000_receive_skb(adapter
, netdev
, skb
,
837 staterr
, rx_desc
->wb
.middle
.vlan
);
840 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
841 buffer_info
->skb
= NULL
;
843 /* return some buffers to hardware, one at a time is too slow */
844 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
845 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
849 /* use prefetched values */
851 buffer_info
= next_buffer
;
853 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
855 rx_ring
->next_to_clean
= i
;
857 cleaned_count
= e1000_desc_unused(rx_ring
);
859 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
861 adapter
->total_rx_bytes
+= total_rx_bytes
;
862 adapter
->total_rx_packets
+= total_rx_packets
;
863 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
864 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
869 * e1000_consume_page - helper function
871 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
876 skb
->data_len
+= length
;
877 skb
->truesize
+= length
;
881 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
882 * @adapter: board private structure
884 * the return value indicates whether actual cleaning was done, there
885 * is no guarantee that everything was cleaned
888 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
889 int *work_done
, int work_to_do
)
891 struct net_device
*netdev
= adapter
->netdev
;
892 struct pci_dev
*pdev
= adapter
->pdev
;
893 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
894 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
895 struct e1000_buffer
*buffer_info
, *next_buffer
;
898 int cleaned_count
= 0;
899 bool cleaned
= false;
900 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
902 i
= rx_ring
->next_to_clean
;
903 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
904 buffer_info
= &rx_ring
->buffer_info
[i
];
906 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
910 if (*work_done
>= work_to_do
)
914 status
= rx_desc
->status
;
915 skb
= buffer_info
->skb
;
916 buffer_info
->skb
= NULL
;
919 if (i
== rx_ring
->count
)
921 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
924 next_buffer
= &rx_ring
->buffer_info
[i
];
928 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
930 buffer_info
->dma
= 0;
932 length
= le16_to_cpu(rx_desc
->length
);
934 /* errors is only valid for DD + EOP descriptors */
935 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
936 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
937 /* recycle both page and skb */
938 buffer_info
->skb
= skb
;
939 /* an error means any chain goes out the window
941 if (rx_ring
->rx_skb_top
)
942 dev_kfree_skb(rx_ring
->rx_skb_top
);
943 rx_ring
->rx_skb_top
= NULL
;
947 #define rxtop rx_ring->rx_skb_top
948 if (!(status
& E1000_RXD_STAT_EOP
)) {
949 /* this descriptor is only the beginning (or middle) */
951 /* this is the beginning of a chain */
953 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
956 /* this is the middle of a chain */
957 skb_fill_page_desc(rxtop
,
958 skb_shinfo(rxtop
)->nr_frags
,
959 buffer_info
->page
, 0, length
);
960 /* re-use the skb, only consumed the page */
961 buffer_info
->skb
= skb
;
963 e1000_consume_page(buffer_info
, rxtop
, length
);
967 /* end of the chain */
968 skb_fill_page_desc(rxtop
,
969 skb_shinfo(rxtop
)->nr_frags
,
970 buffer_info
->page
, 0, length
);
971 /* re-use the current skb, we only consumed the
973 buffer_info
->skb
= skb
;
976 e1000_consume_page(buffer_info
, skb
, length
);
978 /* no chain, got EOP, this buf is the packet
979 * copybreak to save the put_page/alloc_page */
980 if (length
<= copybreak
&&
981 skb_tailroom(skb
) >= length
) {
983 vaddr
= kmap_atomic(buffer_info
->page
,
984 KM_SKB_DATA_SOFTIRQ
);
985 memcpy(skb_tail_pointer(skb
), vaddr
,
988 KM_SKB_DATA_SOFTIRQ
);
989 /* re-use the page, so don't erase
990 * buffer_info->page */
991 skb_put(skb
, length
);
993 skb_fill_page_desc(skb
, 0,
994 buffer_info
->page
, 0,
996 e1000_consume_page(buffer_info
, skb
,
1002 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1003 e1000_rx_checksum(adapter
,
1005 ((u32
)(rx_desc
->errors
) << 24),
1006 le16_to_cpu(rx_desc
->csum
), skb
);
1008 /* probably a little skewed due to removing CRC */
1009 total_rx_bytes
+= skb
->len
;
1012 /* eth type trans needs skb->data to point to something */
1013 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1014 ndev_err(netdev
, "pskb_may_pull failed.\n");
1019 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1023 rx_desc
->status
= 0;
1025 /* return some buffers to hardware, one at a time is too slow */
1026 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1027 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1031 /* use prefetched values */
1033 buffer_info
= next_buffer
;
1035 rx_ring
->next_to_clean
= i
;
1037 cleaned_count
= e1000_desc_unused(rx_ring
);
1039 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1041 adapter
->total_rx_bytes
+= total_rx_bytes
;
1042 adapter
->total_rx_packets
+= total_rx_packets
;
1043 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1044 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1049 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1050 * @adapter: board private structure
1052 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1054 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1055 struct e1000_buffer
*buffer_info
;
1056 struct e1000_ps_page
*ps_page
;
1057 struct pci_dev
*pdev
= adapter
->pdev
;
1060 /* Free all the Rx ring sk_buffs */
1061 for (i
= 0; i
< rx_ring
->count
; i
++) {
1062 buffer_info
= &rx_ring
->buffer_info
[i
];
1063 if (buffer_info
->dma
) {
1064 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1065 pci_unmap_single(pdev
, buffer_info
->dma
,
1066 adapter
->rx_buffer_len
,
1067 PCI_DMA_FROMDEVICE
);
1068 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1069 pci_unmap_page(pdev
, buffer_info
->dma
,
1071 PCI_DMA_FROMDEVICE
);
1072 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1073 pci_unmap_single(pdev
, buffer_info
->dma
,
1074 adapter
->rx_ps_bsize0
,
1075 PCI_DMA_FROMDEVICE
);
1076 buffer_info
->dma
= 0;
1079 if (buffer_info
->page
) {
1080 put_page(buffer_info
->page
);
1081 buffer_info
->page
= NULL
;
1084 if (buffer_info
->skb
) {
1085 dev_kfree_skb(buffer_info
->skb
);
1086 buffer_info
->skb
= NULL
;
1089 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1090 ps_page
= &buffer_info
->ps_pages
[j
];
1093 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1094 PCI_DMA_FROMDEVICE
);
1096 put_page(ps_page
->page
);
1097 ps_page
->page
= NULL
;
1101 /* there also may be some cached data from a chained receive */
1102 if (rx_ring
->rx_skb_top
) {
1103 dev_kfree_skb(rx_ring
->rx_skb_top
);
1104 rx_ring
->rx_skb_top
= NULL
;
1107 /* Zero out the descriptor ring */
1108 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1110 rx_ring
->next_to_clean
= 0;
1111 rx_ring
->next_to_use
= 0;
1113 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1114 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1118 * e1000_intr_msi - Interrupt Handler
1119 * @irq: interrupt number
1120 * @data: pointer to a network interface device structure
1122 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1124 struct net_device
*netdev
= data
;
1125 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1126 struct e1000_hw
*hw
= &adapter
->hw
;
1127 u32 icr
= er32(ICR
);
1130 * read ICR disables interrupts using IAM
1133 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1134 hw
->mac
.get_link_status
= 1;
1136 * ICH8 workaround-- Call gig speed drop workaround on cable
1137 * disconnect (LSC) before accessing any PHY registers
1139 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1140 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1141 e1000e_gig_downshift_workaround_ich8lan(hw
);
1144 * 80003ES2LAN workaround-- For packet buffer work-around on
1145 * link down event; disable receives here in the ISR and reset
1146 * adapter in watchdog
1148 if (netif_carrier_ok(netdev
) &&
1149 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1150 /* disable receives */
1151 u32 rctl
= er32(RCTL
);
1152 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1153 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1155 /* guard against interrupt when we're going down */
1156 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1157 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1160 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1161 adapter
->total_tx_bytes
= 0;
1162 adapter
->total_tx_packets
= 0;
1163 adapter
->total_rx_bytes
= 0;
1164 adapter
->total_rx_packets
= 0;
1165 __netif_rx_schedule(netdev
, &adapter
->napi
);
1172 * e1000_intr - Interrupt Handler
1173 * @irq: interrupt number
1174 * @data: pointer to a network interface device structure
1176 static irqreturn_t
e1000_intr(int irq
, void *data
)
1178 struct net_device
*netdev
= data
;
1179 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1180 struct e1000_hw
*hw
= &adapter
->hw
;
1182 u32 rctl
, icr
= er32(ICR
);
1184 return IRQ_NONE
; /* Not our interrupt */
1187 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1188 * not set, then the adapter didn't send an interrupt
1190 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1194 * Interrupt Auto-Mask...upon reading ICR,
1195 * interrupts are masked. No need for the
1199 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
1200 hw
->mac
.get_link_status
= 1;
1202 * ICH8 workaround-- Call gig speed drop workaround on cable
1203 * disconnect (LSC) before accessing any PHY registers
1205 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1206 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1207 e1000e_gig_downshift_workaround_ich8lan(hw
);
1210 * 80003ES2LAN workaround--
1211 * For packet buffer work-around on link down event;
1212 * disable receives here in the ISR and
1213 * reset adapter in watchdog
1215 if (netif_carrier_ok(netdev
) &&
1216 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1217 /* disable receives */
1219 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1220 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1222 /* guard against interrupt when we're going down */
1223 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1224 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1227 if (netif_rx_schedule_prep(netdev
, &adapter
->napi
)) {
1228 adapter
->total_tx_bytes
= 0;
1229 adapter
->total_tx_packets
= 0;
1230 adapter
->total_rx_bytes
= 0;
1231 adapter
->total_rx_packets
= 0;
1232 __netif_rx_schedule(netdev
, &adapter
->napi
);
1238 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1240 struct net_device
*netdev
= adapter
->netdev
;
1241 irq_handler_t handler
= e1000_intr
;
1242 int irq_flags
= IRQF_SHARED
;
1245 if (!pci_enable_msi(adapter
->pdev
)) {
1246 adapter
->flags
|= FLAG_MSI_ENABLED
;
1247 handler
= e1000_intr_msi
;
1251 err
= request_irq(adapter
->pdev
->irq
, handler
, irq_flags
, netdev
->name
,
1255 "Unable to allocate %s interrupt (return: %d)\n",
1256 adapter
->flags
& FLAG_MSI_ENABLED
? "MSI":"INTx",
1258 if (adapter
->flags
& FLAG_MSI_ENABLED
)
1259 pci_disable_msi(adapter
->pdev
);
1265 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1267 struct net_device
*netdev
= adapter
->netdev
;
1269 free_irq(adapter
->pdev
->irq
, netdev
);
1270 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1271 pci_disable_msi(adapter
->pdev
);
1272 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1277 * e1000_irq_disable - Mask off interrupt generation on the NIC
1279 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1281 struct e1000_hw
*hw
= &adapter
->hw
;
1285 synchronize_irq(adapter
->pdev
->irq
);
1289 * e1000_irq_enable - Enable default interrupt generation settings
1291 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1293 struct e1000_hw
*hw
= &adapter
->hw
;
1295 ew32(IMS
, IMS_ENABLE_MASK
);
1300 * e1000_get_hw_control - get control of the h/w from f/w
1301 * @adapter: address of board private structure
1303 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1304 * For ASF and Pass Through versions of f/w this means that
1305 * the driver is loaded. For AMT version (only with 82573)
1306 * of the f/w this means that the network i/f is open.
1308 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1310 struct e1000_hw
*hw
= &adapter
->hw
;
1314 /* Let firmware know the driver has taken over */
1315 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1317 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1318 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1319 ctrl_ext
= er32(CTRL_EXT
);
1320 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1325 * e1000_release_hw_control - release control of the h/w to f/w
1326 * @adapter: address of board private structure
1328 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1329 * For ASF and Pass Through versions of f/w this means that the
1330 * driver is no longer loaded. For AMT version (only with 82573) i
1331 * of the f/w this means that the network i/f is closed.
1334 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1336 struct e1000_hw
*hw
= &adapter
->hw
;
1340 /* Let firmware taken over control of h/w */
1341 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1343 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1344 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1345 ctrl_ext
= er32(CTRL_EXT
);
1346 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1351 * @e1000_alloc_ring - allocate memory for a ring structure
1353 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1354 struct e1000_ring
*ring
)
1356 struct pci_dev
*pdev
= adapter
->pdev
;
1358 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1367 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1368 * @adapter: board private structure
1370 * Return 0 on success, negative on failure
1372 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1374 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1375 int err
= -ENOMEM
, size
;
1377 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1378 tx_ring
->buffer_info
= vmalloc(size
);
1379 if (!tx_ring
->buffer_info
)
1381 memset(tx_ring
->buffer_info
, 0, size
);
1383 /* round up to nearest 4K */
1384 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1385 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1387 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1391 tx_ring
->next_to_use
= 0;
1392 tx_ring
->next_to_clean
= 0;
1393 spin_lock_init(&adapter
->tx_queue_lock
);
1397 vfree(tx_ring
->buffer_info
);
1398 ndev_err(adapter
->netdev
,
1399 "Unable to allocate memory for the transmit descriptor ring\n");
1404 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1405 * @adapter: board private structure
1407 * Returns 0 on success, negative on failure
1409 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1411 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1412 struct e1000_buffer
*buffer_info
;
1413 int i
, size
, desc_len
, err
= -ENOMEM
;
1415 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1416 rx_ring
->buffer_info
= vmalloc(size
);
1417 if (!rx_ring
->buffer_info
)
1419 memset(rx_ring
->buffer_info
, 0, size
);
1421 for (i
= 0; i
< rx_ring
->count
; i
++) {
1422 buffer_info
= &rx_ring
->buffer_info
[i
];
1423 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1424 sizeof(struct e1000_ps_page
),
1426 if (!buffer_info
->ps_pages
)
1430 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1432 /* Round up to nearest 4K */
1433 rx_ring
->size
= rx_ring
->count
* desc_len
;
1434 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1436 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1440 rx_ring
->next_to_clean
= 0;
1441 rx_ring
->next_to_use
= 0;
1442 rx_ring
->rx_skb_top
= NULL
;
1447 for (i
= 0; i
< rx_ring
->count
; i
++) {
1448 buffer_info
= &rx_ring
->buffer_info
[i
];
1449 kfree(buffer_info
->ps_pages
);
1452 vfree(rx_ring
->buffer_info
);
1453 ndev_err(adapter
->netdev
,
1454 "Unable to allocate memory for the transmit descriptor ring\n");
1459 * e1000_clean_tx_ring - Free Tx Buffers
1460 * @adapter: board private structure
1462 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1464 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1465 struct e1000_buffer
*buffer_info
;
1469 for (i
= 0; i
< tx_ring
->count
; i
++) {
1470 buffer_info
= &tx_ring
->buffer_info
[i
];
1471 e1000_put_txbuf(adapter
, buffer_info
);
1474 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1475 memset(tx_ring
->buffer_info
, 0, size
);
1477 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1479 tx_ring
->next_to_use
= 0;
1480 tx_ring
->next_to_clean
= 0;
1482 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1483 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1487 * e1000e_free_tx_resources - Free Tx Resources per Queue
1488 * @adapter: board private structure
1490 * Free all transmit software resources
1492 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1494 struct pci_dev
*pdev
= adapter
->pdev
;
1495 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1497 e1000_clean_tx_ring(adapter
);
1499 vfree(tx_ring
->buffer_info
);
1500 tx_ring
->buffer_info
= NULL
;
1502 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1504 tx_ring
->desc
= NULL
;
1508 * e1000e_free_rx_resources - Free Rx Resources
1509 * @adapter: board private structure
1511 * Free all receive software resources
1514 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1516 struct pci_dev
*pdev
= adapter
->pdev
;
1517 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1520 e1000_clean_rx_ring(adapter
);
1522 for (i
= 0; i
< rx_ring
->count
; i
++) {
1523 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1526 vfree(rx_ring
->buffer_info
);
1527 rx_ring
->buffer_info
= NULL
;
1529 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1531 rx_ring
->desc
= NULL
;
1535 * e1000_update_itr - update the dynamic ITR value based on statistics
1536 * @adapter: pointer to adapter
1537 * @itr_setting: current adapter->itr
1538 * @packets: the number of packets during this measurement interval
1539 * @bytes: the number of bytes during this measurement interval
1541 * Stores a new ITR value based on packets and byte
1542 * counts during the last interrupt. The advantage of per interrupt
1543 * computation is faster updates and more accurate ITR for the current
1544 * traffic pattern. Constants in this function were computed
1545 * based on theoretical maximum wire speed and thresholds were set based
1546 * on testing data as well as attempting to minimize response time
1547 * while increasing bulk throughput.
1548 * this functionality is controlled by the InterruptThrottleRate module
1549 * parameter (see e1000_param.c)
1551 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1552 u16 itr_setting
, int packets
,
1555 unsigned int retval
= itr_setting
;
1558 goto update_itr_done
;
1560 switch (itr_setting
) {
1561 case lowest_latency
:
1562 /* handle TSO and jumbo frames */
1563 if (bytes
/packets
> 8000)
1564 retval
= bulk_latency
;
1565 else if ((packets
< 5) && (bytes
> 512)) {
1566 retval
= low_latency
;
1569 case low_latency
: /* 50 usec aka 20000 ints/s */
1570 if (bytes
> 10000) {
1571 /* this if handles the TSO accounting */
1572 if (bytes
/packets
> 8000) {
1573 retval
= bulk_latency
;
1574 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1575 retval
= bulk_latency
;
1576 } else if ((packets
> 35)) {
1577 retval
= lowest_latency
;
1579 } else if (bytes
/packets
> 2000) {
1580 retval
= bulk_latency
;
1581 } else if (packets
<= 2 && bytes
< 512) {
1582 retval
= lowest_latency
;
1585 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1586 if (bytes
> 25000) {
1588 retval
= low_latency
;
1590 } else if (bytes
< 6000) {
1591 retval
= low_latency
;
1600 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1602 struct e1000_hw
*hw
= &adapter
->hw
;
1604 u32 new_itr
= adapter
->itr
;
1606 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1607 if (adapter
->link_speed
!= SPEED_1000
) {
1613 adapter
->tx_itr
= e1000_update_itr(adapter
,
1615 adapter
->total_tx_packets
,
1616 adapter
->total_tx_bytes
);
1617 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1618 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1619 adapter
->tx_itr
= low_latency
;
1621 adapter
->rx_itr
= e1000_update_itr(adapter
,
1623 adapter
->total_rx_packets
,
1624 adapter
->total_rx_bytes
);
1625 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1626 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1627 adapter
->rx_itr
= low_latency
;
1629 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1631 switch (current_itr
) {
1632 /* counts and packets in update_itr are dependent on these numbers */
1633 case lowest_latency
:
1637 new_itr
= 20000; /* aka hwitr = ~200 */
1647 if (new_itr
!= adapter
->itr
) {
1649 * this attempts to bias the interrupt rate towards Bulk
1650 * by adding intermediate steps when interrupt rate is
1653 new_itr
= new_itr
> adapter
->itr
?
1654 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1656 adapter
->itr
= new_itr
;
1657 ew32(ITR
, 1000000000 / (new_itr
* 256));
1662 * e1000_clean - NAPI Rx polling callback
1663 * @napi: struct associated with this polling callback
1664 * @budget: amount of packets driver is allowed to process this poll
1666 static int e1000_clean(struct napi_struct
*napi
, int budget
)
1668 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
1669 struct net_device
*poll_dev
= adapter
->netdev
;
1670 int tx_cleaned
= 0, work_done
= 0;
1672 /* Must NOT use netdev_priv macro here. */
1673 adapter
= poll_dev
->priv
;
1676 * e1000_clean is called per-cpu. This lock protects
1677 * tx_ring from being cleaned by multiple cpus
1678 * simultaneously. A failure obtaining the lock means
1679 * tx_ring is currently being cleaned anyway.
1681 if (spin_trylock(&adapter
->tx_queue_lock
)) {
1682 tx_cleaned
= e1000_clean_tx_irq(adapter
);
1683 spin_unlock(&adapter
->tx_queue_lock
);
1686 adapter
->clean_rx(adapter
, &work_done
, budget
);
1691 /* If budget not fully consumed, exit the polling mode */
1692 if (work_done
< budget
) {
1693 if (adapter
->itr_setting
& 3)
1694 e1000_set_itr(adapter
);
1695 netif_rx_complete(poll_dev
, napi
);
1696 e1000_irq_enable(adapter
);
1702 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1704 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1705 struct e1000_hw
*hw
= &adapter
->hw
;
1708 /* don't update vlan cookie if already programmed */
1709 if ((adapter
->hw
.mng_cookie
.status
&
1710 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1711 (vid
== adapter
->mng_vlan_id
))
1713 /* add VID to filter table */
1714 index
= (vid
>> 5) & 0x7F;
1715 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
1716 vfta
|= (1 << (vid
& 0x1F));
1717 e1000e_write_vfta(hw
, index
, vfta
);
1720 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1722 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1723 struct e1000_hw
*hw
= &adapter
->hw
;
1726 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1727 e1000_irq_disable(adapter
);
1728 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
1730 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1731 e1000_irq_enable(adapter
);
1733 if ((adapter
->hw
.mng_cookie
.status
&
1734 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1735 (vid
== adapter
->mng_vlan_id
)) {
1736 /* release control to f/w */
1737 e1000_release_hw_control(adapter
);
1741 /* remove VID from filter table */
1742 index
= (vid
>> 5) & 0x7F;
1743 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
1744 vfta
&= ~(1 << (vid
& 0x1F));
1745 e1000e_write_vfta(hw
, index
, vfta
);
1748 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
1750 struct net_device
*netdev
= adapter
->netdev
;
1751 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
1752 u16 old_vid
= adapter
->mng_vlan_id
;
1754 if (!adapter
->vlgrp
)
1757 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
1758 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1759 if (adapter
->hw
.mng_cookie
.status
&
1760 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
1761 e1000_vlan_rx_add_vid(netdev
, vid
);
1762 adapter
->mng_vlan_id
= vid
;
1765 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
1767 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
1768 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
1770 adapter
->mng_vlan_id
= vid
;
1775 static void e1000_vlan_rx_register(struct net_device
*netdev
,
1776 struct vlan_group
*grp
)
1778 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1779 struct e1000_hw
*hw
= &adapter
->hw
;
1782 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1783 e1000_irq_disable(adapter
);
1784 adapter
->vlgrp
= grp
;
1787 /* enable VLAN tag insert/strip */
1789 ctrl
|= E1000_CTRL_VME
;
1792 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
1793 /* enable VLAN receive filtering */
1795 rctl
&= ~E1000_RCTL_CFIEN
;
1797 e1000_update_mng_vlan(adapter
);
1800 /* disable VLAN tag insert/strip */
1802 ctrl
&= ~E1000_CTRL_VME
;
1805 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
1806 if (adapter
->mng_vlan_id
!=
1807 (u16
)E1000_MNG_VLAN_NONE
) {
1808 e1000_vlan_rx_kill_vid(netdev
,
1809 adapter
->mng_vlan_id
);
1810 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1815 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1816 e1000_irq_enable(adapter
);
1819 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
1823 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1825 if (!adapter
->vlgrp
)
1828 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
1829 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
1831 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
1835 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
1837 struct e1000_hw
*hw
= &adapter
->hw
;
1840 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
1846 * enable receiving management packets to the host. this will probably
1847 * generate destination unreachable messages from the host OS, but
1848 * the packets will be handled on SMBUS
1850 manc
|= E1000_MANC_EN_MNG2HOST
;
1851 manc2h
= er32(MANC2H
);
1852 #define E1000_MNG2HOST_PORT_623 (1 << 5)
1853 #define E1000_MNG2HOST_PORT_664 (1 << 6)
1854 manc2h
|= E1000_MNG2HOST_PORT_623
;
1855 manc2h
|= E1000_MNG2HOST_PORT_664
;
1856 ew32(MANC2H
, manc2h
);
1861 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1862 * @adapter: board private structure
1864 * Configure the Tx unit of the MAC after a reset.
1866 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
1868 struct e1000_hw
*hw
= &adapter
->hw
;
1869 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1871 u32 tdlen
, tctl
, tipg
, tarc
;
1874 /* Setup the HW Tx Head and Tail descriptor pointers */
1875 tdba
= tx_ring
->dma
;
1876 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1877 ew32(TDBAL
, (tdba
& DMA_32BIT_MASK
));
1878 ew32(TDBAH
, (tdba
>> 32));
1882 tx_ring
->head
= E1000_TDH
;
1883 tx_ring
->tail
= E1000_TDT
;
1885 /* Set the default values for the Tx Inter Packet Gap timer */
1886 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
1887 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
1888 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
1890 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
1891 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
1893 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1894 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1897 /* Set the Tx Interrupt Delay register */
1898 ew32(TIDV
, adapter
->tx_int_delay
);
1899 /* Tx irq moderation */
1900 ew32(TADV
, adapter
->tx_abs_int_delay
);
1902 /* Program the Transmit Control Register */
1904 tctl
&= ~E1000_TCTL_CT
;
1905 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1906 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1908 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
1909 tarc
= er32(TARC(0));
1911 * set the speed mode bit, we'll clear it if we're not at
1912 * gigabit link later
1914 #define SPEED_MODE_BIT (1 << 21)
1915 tarc
|= SPEED_MODE_BIT
;
1916 ew32(TARC(0), tarc
);
1919 /* errata: program both queues to unweighted RR */
1920 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
1921 tarc
= er32(TARC(0));
1923 ew32(TARC(0), tarc
);
1924 tarc
= er32(TARC(1));
1926 ew32(TARC(1), tarc
);
1929 e1000e_config_collision_dist(hw
);
1931 /* Setup Transmit Descriptor Settings for eop descriptor */
1932 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1934 /* only set IDE if we are delaying interrupts using the timers */
1935 if (adapter
->tx_int_delay
)
1936 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1938 /* enable Report Status bit */
1939 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1943 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
1947 * e1000_setup_rctl - configure the receive control registers
1948 * @adapter: Board private structure
1950 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1951 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1952 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
1954 struct e1000_hw
*hw
= &adapter
->hw
;
1959 /* Program MC offset vector base */
1961 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1962 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1963 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1964 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1966 /* Do not Store bad packets */
1967 rctl
&= ~E1000_RCTL_SBP
;
1969 /* Enable Long Packet receive */
1970 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1971 rctl
&= ~E1000_RCTL_LPE
;
1973 rctl
|= E1000_RCTL_LPE
;
1975 /* Enable hardware CRC frame stripping */
1976 rctl
|= E1000_RCTL_SECRC
;
1978 /* Setup buffer sizes */
1979 rctl
&= ~E1000_RCTL_SZ_4096
;
1980 rctl
|= E1000_RCTL_BSEX
;
1981 switch (adapter
->rx_buffer_len
) {
1983 rctl
|= E1000_RCTL_SZ_256
;
1984 rctl
&= ~E1000_RCTL_BSEX
;
1987 rctl
|= E1000_RCTL_SZ_512
;
1988 rctl
&= ~E1000_RCTL_BSEX
;
1991 rctl
|= E1000_RCTL_SZ_1024
;
1992 rctl
&= ~E1000_RCTL_BSEX
;
1996 rctl
|= E1000_RCTL_SZ_2048
;
1997 rctl
&= ~E1000_RCTL_BSEX
;
2000 rctl
|= E1000_RCTL_SZ_4096
;
2003 rctl
|= E1000_RCTL_SZ_8192
;
2006 rctl
|= E1000_RCTL_SZ_16384
;
2011 * 82571 and greater support packet-split where the protocol
2012 * header is placed in skb->data and the packet data is
2013 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2014 * In the case of a non-split, skb->data is linearly filled,
2015 * followed by the page buffers. Therefore, skb->data is
2016 * sized to hold the largest protocol header.
2018 * allocations using alloc_page take too long for regular MTU
2019 * so only enable packet split for jumbo frames
2021 * Using pages when the page size is greater than 16k wastes
2022 * a lot of memory, since we allocate 3 pages at all times
2025 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2026 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2027 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2028 adapter
->rx_ps_pages
= pages
;
2030 adapter
->rx_ps_pages
= 0;
2032 if (adapter
->rx_ps_pages
) {
2033 /* Configure extra packet-split registers */
2034 rfctl
= er32(RFCTL
);
2035 rfctl
|= E1000_RFCTL_EXTEN
;
2037 * disable packet split support for IPv6 extension headers,
2038 * because some malformed IPv6 headers can hang the Rx
2040 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2041 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2045 /* Enable Packet split descriptors */
2046 rctl
|= E1000_RCTL_DTYP_PS
;
2048 psrctl
|= adapter
->rx_ps_bsize0
>>
2049 E1000_PSRCTL_BSIZE0_SHIFT
;
2051 switch (adapter
->rx_ps_pages
) {
2053 psrctl
|= PAGE_SIZE
<<
2054 E1000_PSRCTL_BSIZE3_SHIFT
;
2056 psrctl
|= PAGE_SIZE
<<
2057 E1000_PSRCTL_BSIZE2_SHIFT
;
2059 psrctl
|= PAGE_SIZE
>>
2060 E1000_PSRCTL_BSIZE1_SHIFT
;
2064 ew32(PSRCTL
, psrctl
);
2068 /* just started the receive unit, no need to restart */
2069 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2073 * e1000_configure_rx - Configure Receive Unit after Reset
2074 * @adapter: board private structure
2076 * Configure the Rx unit of the MAC after a reset.
2078 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2080 struct e1000_hw
*hw
= &adapter
->hw
;
2081 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2083 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2085 if (adapter
->rx_ps_pages
) {
2086 /* this is a 32 byte descriptor */
2087 rdlen
= rx_ring
->count
*
2088 sizeof(union e1000_rx_desc_packet_split
);
2089 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2090 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2091 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2092 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2093 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2094 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2096 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2097 adapter
->clean_rx
= e1000_clean_rx_irq
;
2098 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2101 /* disable receives while setting up the descriptors */
2103 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2107 /* set the Receive Delay Timer Register */
2108 ew32(RDTR
, adapter
->rx_int_delay
);
2110 /* irq moderation */
2111 ew32(RADV
, adapter
->rx_abs_int_delay
);
2112 if (adapter
->itr_setting
!= 0)
2113 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2115 ctrl_ext
= er32(CTRL_EXT
);
2116 /* Reset delay timers after every interrupt */
2117 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2118 /* Auto-Mask interrupts upon ICR access */
2119 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2120 ew32(IAM
, 0xffffffff);
2121 ew32(CTRL_EXT
, ctrl_ext
);
2125 * Setup the HW Rx Head and Tail Descriptor Pointers and
2126 * the Base and Length of the Rx Descriptor Ring
2128 rdba
= rx_ring
->dma
;
2129 ew32(RDBAL
, (rdba
& DMA_32BIT_MASK
));
2130 ew32(RDBAH
, (rdba
>> 32));
2134 rx_ring
->head
= E1000_RDH
;
2135 rx_ring
->tail
= E1000_RDT
;
2137 /* Enable Receive Checksum Offload for TCP and UDP */
2138 rxcsum
= er32(RXCSUM
);
2139 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2140 rxcsum
|= E1000_RXCSUM_TUOFL
;
2143 * IPv4 payload checksum for UDP fragments must be
2144 * used in conjunction with packet-split.
2146 if (adapter
->rx_ps_pages
)
2147 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2149 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2150 /* no need to clear IPPCSE as it defaults to 0 */
2152 ew32(RXCSUM
, rxcsum
);
2155 * Enable early receives on supported devices, only takes effect when
2156 * packet size is equal or larger than the specified value (in 8 byte
2157 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2159 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2160 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2161 u32 rxdctl
= er32(RXDCTL(0));
2162 ew32(RXDCTL(0), rxdctl
| 0x3);
2163 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2165 * With jumbo frames and early-receive enabled, excessive
2166 * C4->C2 latencies result in dropped transactions.
2168 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2169 e1000e_driver_name
, 55);
2171 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2173 PM_QOS_DEFAULT_VALUE
);
2176 /* Enable Receives */
2181 * e1000_update_mc_addr_list - Update Multicast addresses
2182 * @hw: pointer to the HW structure
2183 * @mc_addr_list: array of multicast addresses to program
2184 * @mc_addr_count: number of multicast addresses to program
2185 * @rar_used_count: the first RAR register free to program
2186 * @rar_count: total number of supported Receive Address Registers
2188 * Updates the Receive Address Registers and Multicast Table Array.
2189 * The caller must have a packed mc_addr_list of multicast addresses.
2190 * The parameter rar_count will usually be hw->mac.rar_entry_count
2191 * unless there are workarounds that change this. Currently no func pointer
2192 * exists and all implementations are handled in the generic version of this
2195 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2196 u32 mc_addr_count
, u32 rar_used_count
,
2199 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2200 rar_used_count
, rar_count
);
2204 * e1000_set_multi - Multicast and Promiscuous mode set
2205 * @netdev: network interface device structure
2207 * The set_multi entry point is called whenever the multicast address
2208 * list or the network interface flags are updated. This routine is
2209 * responsible for configuring the hardware for proper multicast,
2210 * promiscuous mode, and all-multi behavior.
2212 static void e1000_set_multi(struct net_device
*netdev
)
2214 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2215 struct e1000_hw
*hw
= &adapter
->hw
;
2216 struct e1000_mac_info
*mac
= &hw
->mac
;
2217 struct dev_mc_list
*mc_ptr
;
2222 /* Check for Promiscuous and All Multicast modes */
2226 if (netdev
->flags
& IFF_PROMISC
) {
2227 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2228 rctl
&= ~E1000_RCTL_VFE
;
2230 if (netdev
->flags
& IFF_ALLMULTI
) {
2231 rctl
|= E1000_RCTL_MPE
;
2232 rctl
&= ~E1000_RCTL_UPE
;
2234 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2236 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2237 rctl
|= E1000_RCTL_VFE
;
2242 if (netdev
->mc_count
) {
2243 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2247 /* prepare a packed array of only addresses. */
2248 mc_ptr
= netdev
->mc_list
;
2250 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2253 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2255 mc_ptr
= mc_ptr
->next
;
2258 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2259 mac
->rar_entry_count
);
2263 * if we're called from probe, we might not have
2264 * anything to do here, so clear out the list
2266 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2271 * e1000_configure - configure the hardware for Rx and Tx
2272 * @adapter: private board structure
2274 static void e1000_configure(struct e1000_adapter
*adapter
)
2276 e1000_set_multi(adapter
->netdev
);
2278 e1000_restore_vlan(adapter
);
2279 e1000_init_manageability(adapter
);
2281 e1000_configure_tx(adapter
);
2282 e1000_setup_rctl(adapter
);
2283 e1000_configure_rx(adapter
);
2284 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2288 * e1000e_power_up_phy - restore link in case the phy was powered down
2289 * @adapter: address of board private structure
2291 * The phy may be powered down to save power and turn off link when the
2292 * driver is unloaded and wake on lan is not enabled (among others)
2293 * *** this routine MUST be followed by a call to e1000e_reset ***
2295 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2299 /* Just clear the power down bit to wake the phy back up */
2300 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2302 * According to the manual, the phy will retain its
2303 * settings across a power-down/up cycle
2305 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2306 mii_reg
&= ~MII_CR_POWER_DOWN
;
2307 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2310 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2314 * e1000_power_down_phy - Power down the PHY
2316 * Power down the PHY so no link is implied when interface is down
2317 * The PHY cannot be powered down is management or WoL is active
2319 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2321 struct e1000_hw
*hw
= &adapter
->hw
;
2324 /* WoL is enabled */
2328 /* non-copper PHY? */
2329 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2332 /* reset is blocked because of a SoL/IDER session */
2333 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2336 /* manageability (AMT) is enabled */
2337 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2340 /* power down the PHY */
2341 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2342 mii_reg
|= MII_CR_POWER_DOWN
;
2343 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2348 * e1000e_reset - bring the hardware into a known good state
2350 * This function boots the hardware and enables some settings that
2351 * require a configuration cycle of the hardware - those cannot be
2352 * set/changed during runtime. After reset the device needs to be
2353 * properly configured for Rx, Tx etc.
2355 void e1000e_reset(struct e1000_adapter
*adapter
)
2357 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2358 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2359 struct e1000_hw
*hw
= &adapter
->hw
;
2360 u32 tx_space
, min_tx_space
, min_rx_space
;
2361 u32 pba
= adapter
->pba
;
2364 /* reset Packet Buffer Allocation to default */
2367 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2369 * To maintain wire speed transmits, the Tx FIFO should be
2370 * large enough to accommodate two full transmit packets,
2371 * rounded up to the next 1KB and expressed in KB. Likewise,
2372 * the Rx FIFO should be large enough to accommodate at least
2373 * one full receive packet and is similarly rounded up and
2377 /* upper 16 bits has Tx packet buffer allocation size in KB */
2378 tx_space
= pba
>> 16;
2379 /* lower 16 bits has Rx packet buffer allocation size in KB */
2382 * the Tx fifo also stores 16 bytes of information about the tx
2383 * but don't include ethernet FCS because hardware appends it
2385 min_tx_space
= (adapter
->max_frame_size
+
2386 sizeof(struct e1000_tx_desc
) -
2388 min_tx_space
= ALIGN(min_tx_space
, 1024);
2389 min_tx_space
>>= 10;
2390 /* software strips receive CRC, so leave room for it */
2391 min_rx_space
= adapter
->max_frame_size
;
2392 min_rx_space
= ALIGN(min_rx_space
, 1024);
2393 min_rx_space
>>= 10;
2396 * If current Tx allocation is less than the min Tx FIFO size,
2397 * and the min Tx FIFO size is less than the current Rx FIFO
2398 * allocation, take space away from current Rx allocation
2400 if ((tx_space
< min_tx_space
) &&
2401 ((min_tx_space
- tx_space
) < pba
)) {
2402 pba
-= min_tx_space
- tx_space
;
2405 * if short on Rx space, Rx wins and must trump tx
2406 * adjustment or use Early Receive if available
2408 if ((pba
< min_rx_space
) &&
2409 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2410 /* ERT enabled in e1000_configure_rx */
2419 * flow control settings
2421 * The high water mark must be low enough to fit one full frame
2422 * (or the size used for early receive) above it in the Rx FIFO.
2423 * Set it to the lower of:
2424 * - 90% of the Rx FIFO size, and
2425 * - the full Rx FIFO size minus the early receive size (for parts
2426 * with ERT support assuming ERT set to E1000_ERT_2048), or
2427 * - the full Rx FIFO size minus one full frame
2429 if (adapter
->flags
& FLAG_HAS_ERT
)
2430 hwm
= min(((pba
<< 10) * 9 / 10),
2431 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2433 hwm
= min(((pba
<< 10) * 9 / 10),
2434 ((pba
<< 10) - adapter
->max_frame_size
));
2436 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2437 fc
->low_water
= fc
->high_water
- 8;
2439 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2440 fc
->pause_time
= 0xFFFF;
2442 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2444 fc
->type
= fc
->original_type
;
2446 /* Allow time for pending master requests to run */
2447 mac
->ops
.reset_hw(hw
);
2450 * For parts with AMT enabled, let the firmware know
2451 * that the network interface is in control
2453 if ((adapter
->flags
& FLAG_HAS_AMT
) && e1000e_check_mng_mode(hw
))
2454 e1000_get_hw_control(adapter
);
2458 if (mac
->ops
.init_hw(hw
))
2459 ndev_err(adapter
->netdev
, "Hardware Error\n");
2461 e1000_update_mng_vlan(adapter
);
2463 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2464 ew32(VET
, ETH_P_8021Q
);
2466 e1000e_reset_adaptive(hw
);
2467 e1000_get_phy_info(hw
);
2469 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2472 * speed up time to link by disabling smart power down, ignore
2473 * the return value of this function because there is nothing
2474 * different we would do if it failed
2476 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2477 phy_data
&= ~IGP02E1000_PM_SPD
;
2478 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2482 int e1000e_up(struct e1000_adapter
*adapter
)
2484 struct e1000_hw
*hw
= &adapter
->hw
;
2486 /* hardware has been reset, we need to reload some things */
2487 e1000_configure(adapter
);
2489 clear_bit(__E1000_DOWN
, &adapter
->state
);
2491 napi_enable(&adapter
->napi
);
2492 e1000_irq_enable(adapter
);
2494 /* fire a link change interrupt to start the watchdog */
2495 ew32(ICS
, E1000_ICS_LSC
);
2499 void e1000e_down(struct e1000_adapter
*adapter
)
2501 struct net_device
*netdev
= adapter
->netdev
;
2502 struct e1000_hw
*hw
= &adapter
->hw
;
2506 * signal that we're down so the interrupt handler does not
2507 * reschedule our watchdog timer
2509 set_bit(__E1000_DOWN
, &adapter
->state
);
2511 /* disable receives in the hardware */
2513 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2514 /* flush and sleep below */
2516 netif_tx_stop_all_queues(netdev
);
2518 /* disable transmits in the hardware */
2520 tctl
&= ~E1000_TCTL_EN
;
2522 /* flush both disables and wait for them to finish */
2526 napi_disable(&adapter
->napi
);
2527 e1000_irq_disable(adapter
);
2529 del_timer_sync(&adapter
->watchdog_timer
);
2530 del_timer_sync(&adapter
->phy_info_timer
);
2532 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2533 netif_carrier_off(netdev
);
2534 adapter
->link_speed
= 0;
2535 adapter
->link_duplex
= 0;
2537 if (!pci_channel_offline(adapter
->pdev
))
2538 e1000e_reset(adapter
);
2539 e1000_clean_tx_ring(adapter
);
2540 e1000_clean_rx_ring(adapter
);
2543 * TODO: for power management, we could drop the link and
2544 * pci_disable_device here.
2548 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2551 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2553 e1000e_down(adapter
);
2555 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2559 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2560 * @adapter: board private structure to initialize
2562 * e1000_sw_init initializes the Adapter private data structure.
2563 * Fields are initialized based on PCI device information and
2564 * OS network device settings (MTU size).
2566 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2568 struct net_device
*netdev
= adapter
->netdev
;
2570 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2571 adapter
->rx_ps_bsize0
= 128;
2572 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2573 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2575 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2576 if (!adapter
->tx_ring
)
2579 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
2580 if (!adapter
->rx_ring
)
2583 spin_lock_init(&adapter
->tx_queue_lock
);
2585 /* Explicitly disable IRQ since the NIC can be in any state. */
2586 e1000_irq_disable(adapter
);
2588 spin_lock_init(&adapter
->stats_lock
);
2590 set_bit(__E1000_DOWN
, &adapter
->state
);
2594 ndev_err(netdev
, "Unable to allocate memory for queues\n");
2595 kfree(adapter
->rx_ring
);
2596 kfree(adapter
->tx_ring
);
2601 * e1000_open - Called when a network interface is made active
2602 * @netdev: network interface device structure
2604 * Returns 0 on success, negative value on failure
2606 * The open entry point is called when a network interface is made
2607 * active by the system (IFF_UP). At this point all resources needed
2608 * for transmit and receive operations are allocated, the interrupt
2609 * handler is registered with the OS, the watchdog timer is started,
2610 * and the stack is notified that the interface is ready.
2612 static int e1000_open(struct net_device
*netdev
)
2614 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2615 struct e1000_hw
*hw
= &adapter
->hw
;
2618 /* disallow open during test */
2619 if (test_bit(__E1000_TESTING
, &adapter
->state
))
2622 /* allocate transmit descriptors */
2623 err
= e1000e_setup_tx_resources(adapter
);
2627 /* allocate receive descriptors */
2628 err
= e1000e_setup_rx_resources(adapter
);
2632 e1000e_power_up_phy(adapter
);
2634 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2635 if ((adapter
->hw
.mng_cookie
.status
&
2636 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
2637 e1000_update_mng_vlan(adapter
);
2640 * If AMT is enabled, let the firmware know that the network
2641 * interface is now open
2643 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
2644 e1000e_check_mng_mode(&adapter
->hw
))
2645 e1000_get_hw_control(adapter
);
2648 * before we allocate an interrupt, we must be ready to handle it.
2649 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
2650 * as soon as we call pci_request_irq, so we have to setup our
2651 * clean_rx handler before we do so.
2653 e1000_configure(adapter
);
2655 err
= e1000_request_irq(adapter
);
2659 /* From here on the code is the same as e1000e_up() */
2660 clear_bit(__E1000_DOWN
, &adapter
->state
);
2662 napi_enable(&adapter
->napi
);
2664 e1000_irq_enable(adapter
);
2666 netif_tx_start_all_queues(netdev
);
2668 /* fire a link status change interrupt to start the watchdog */
2669 ew32(ICS
, E1000_ICS_LSC
);
2674 e1000_release_hw_control(adapter
);
2675 e1000_power_down_phy(adapter
);
2676 e1000e_free_rx_resources(adapter
);
2678 e1000e_free_tx_resources(adapter
);
2680 e1000e_reset(adapter
);
2686 * e1000_close - Disables a network interface
2687 * @netdev: network interface device structure
2689 * Returns 0, this is not allowed to fail
2691 * The close entry point is called when an interface is de-activated
2692 * by the OS. The hardware is still under the drivers control, but
2693 * needs to be disabled. A global MAC reset is issued to stop the
2694 * hardware, and all transmit and receive resources are freed.
2696 static int e1000_close(struct net_device
*netdev
)
2698 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2700 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
2701 e1000e_down(adapter
);
2702 e1000_power_down_phy(adapter
);
2703 e1000_free_irq(adapter
);
2705 e1000e_free_tx_resources(adapter
);
2706 e1000e_free_rx_resources(adapter
);
2709 * kill manageability vlan ID if supported, but not if a vlan with
2710 * the same ID is registered on the host OS (let 8021q kill it)
2712 if ((adapter
->hw
.mng_cookie
.status
&
2713 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2715 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
2716 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
2719 * If AMT is enabled, let the firmware know that the network
2720 * interface is now closed
2722 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
2723 e1000e_check_mng_mode(&adapter
->hw
))
2724 e1000_release_hw_control(adapter
);
2729 * e1000_set_mac - Change the Ethernet Address of the NIC
2730 * @netdev: network interface device structure
2731 * @p: pointer to an address structure
2733 * Returns 0 on success, negative on failure
2735 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
2737 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2738 struct sockaddr
*addr
= p
;
2740 if (!is_valid_ether_addr(addr
->sa_data
))
2741 return -EADDRNOTAVAIL
;
2743 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2744 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
2746 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
2748 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
2749 /* activate the work around */
2750 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
2753 * Hold a copy of the LAA in RAR[14] This is done so that
2754 * between the time RAR[0] gets clobbered and the time it
2755 * gets fixed (in e1000_watchdog), the actual LAA is in one
2756 * of the RARs and no incoming packets directed to this port
2757 * are dropped. Eventually the LAA will be in RAR[0] and
2760 e1000e_rar_set(&adapter
->hw
,
2761 adapter
->hw
.mac
.addr
,
2762 adapter
->hw
.mac
.rar_entry_count
- 1);
2769 * Need to wait a few seconds after link up to get diagnostic information from
2772 static void e1000_update_phy_info(unsigned long data
)
2774 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2775 e1000_get_phy_info(&adapter
->hw
);
2779 * e1000e_update_stats - Update the board statistics counters
2780 * @adapter: board private structure
2782 void e1000e_update_stats(struct e1000_adapter
*adapter
)
2784 struct e1000_hw
*hw
= &adapter
->hw
;
2785 struct pci_dev
*pdev
= adapter
->pdev
;
2786 unsigned long irq_flags
;
2789 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2792 * Prevent stats update while adapter is being reset, or if the pci
2793 * connection is down.
2795 if (adapter
->link_speed
== 0)
2797 if (pci_channel_offline(pdev
))
2800 spin_lock_irqsave(&adapter
->stats_lock
, irq_flags
);
2803 * these counters are modified from e1000_adjust_tbi_stats,
2804 * called from the interrupt context, so they must only
2805 * be written while holding adapter->stats_lock
2808 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
2809 adapter
->stats
.gprc
+= er32(GPRC
);
2810 adapter
->stats
.gorc
+= er32(GORCL
);
2811 er32(GORCH
); /* Clear gorc */
2812 adapter
->stats
.bprc
+= er32(BPRC
);
2813 adapter
->stats
.mprc
+= er32(MPRC
);
2814 adapter
->stats
.roc
+= er32(ROC
);
2816 adapter
->stats
.mpc
+= er32(MPC
);
2817 adapter
->stats
.scc
+= er32(SCC
);
2818 adapter
->stats
.ecol
+= er32(ECOL
);
2819 adapter
->stats
.mcc
+= er32(MCC
);
2820 adapter
->stats
.latecol
+= er32(LATECOL
);
2821 adapter
->stats
.dc
+= er32(DC
);
2822 adapter
->stats
.xonrxc
+= er32(XONRXC
);
2823 adapter
->stats
.xontxc
+= er32(XONTXC
);
2824 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
2825 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
2826 adapter
->stats
.gptc
+= er32(GPTC
);
2827 adapter
->stats
.gotc
+= er32(GOTCL
);
2828 er32(GOTCH
); /* Clear gotc */
2829 adapter
->stats
.rnbc
+= er32(RNBC
);
2830 adapter
->stats
.ruc
+= er32(RUC
);
2832 adapter
->stats
.mptc
+= er32(MPTC
);
2833 adapter
->stats
.bptc
+= er32(BPTC
);
2835 /* used for adaptive IFS */
2837 hw
->mac
.tx_packet_delta
= er32(TPT
);
2838 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
2839 hw
->mac
.collision_delta
= er32(COLC
);
2840 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
2842 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
2843 adapter
->stats
.rxerrc
+= er32(RXERRC
);
2844 adapter
->stats
.tncrs
+= er32(TNCRS
);
2845 adapter
->stats
.cexterr
+= er32(CEXTERR
);
2846 adapter
->stats
.tsctc
+= er32(TSCTC
);
2847 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
2849 /* Fill out the OS statistics structure */
2850 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
2851 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
2856 * RLEC on some newer hardware can be incorrect so build
2857 * our own version based on RUC and ROC
2859 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
2860 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
2861 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
2862 adapter
->stats
.cexterr
;
2863 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
2865 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
2866 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
2867 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
2870 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
2871 adapter
->stats
.latecol
;
2872 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
2873 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
2874 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
2876 /* Tx Dropped needs to be maintained elsewhere */
2879 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
2880 if ((adapter
->link_speed
== SPEED_1000
) &&
2881 (!e1e_rphy(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
2882 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
2883 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
2887 /* Management Stats */
2888 adapter
->stats
.mgptc
+= er32(MGTPTC
);
2889 adapter
->stats
.mgprc
+= er32(MGTPRC
);
2890 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
2892 spin_unlock_irqrestore(&adapter
->stats_lock
, irq_flags
);
2896 * e1000_phy_read_status - Update the PHY register status snapshot
2897 * @adapter: board private structure
2899 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
2901 struct e1000_hw
*hw
= &adapter
->hw
;
2902 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
2904 unsigned long irq_flags
;
2907 spin_lock_irqsave(&adapter
->stats_lock
, irq_flags
);
2909 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
2910 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
2911 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
2912 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
2913 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
2914 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
2915 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
2916 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
2917 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
2918 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
2920 ndev_warn(adapter
->netdev
,
2921 "Error reading PHY register\n");
2924 * Do not read PHY registers if link is not up
2925 * Set values to typical power-on defaults
2927 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
2928 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
2929 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
2931 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
2932 ADVERTISE_ALL
| ADVERTISE_CSMA
);
2934 phy
->expansion
= EXPANSION_ENABLENPAGE
;
2935 phy
->ctrl1000
= ADVERTISE_1000FULL
;
2937 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
2940 spin_unlock_irqrestore(&adapter
->stats_lock
, irq_flags
);
2943 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
2945 struct e1000_hw
*hw
= &adapter
->hw
;
2946 struct net_device
*netdev
= adapter
->netdev
;
2947 u32 ctrl
= er32(CTRL
);
2950 "Link is Up %d Mbps %s, Flow Control: %s\n",
2951 adapter
->link_speed
,
2952 (adapter
->link_duplex
== FULL_DUPLEX
) ?
2953 "Full Duplex" : "Half Duplex",
2954 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
2956 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
2957 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
2960 static bool e1000_has_link(struct e1000_adapter
*adapter
)
2962 struct e1000_hw
*hw
= &adapter
->hw
;
2963 bool link_active
= 0;
2967 * get_link_status is set on LSC (link status) interrupt or
2968 * Rx sequence error interrupt. get_link_status will stay
2969 * false until the check_for_link establishes link
2970 * for copper adapters ONLY
2972 switch (hw
->phy
.media_type
) {
2973 case e1000_media_type_copper
:
2974 if (hw
->mac
.get_link_status
) {
2975 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2976 link_active
= !hw
->mac
.get_link_status
;
2981 case e1000_media_type_fiber
:
2982 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2983 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
2985 case e1000_media_type_internal_serdes
:
2986 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2987 link_active
= adapter
->hw
.mac
.serdes_has_link
;
2990 case e1000_media_type_unknown
:
2994 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
2995 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2996 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
2997 ndev_info(adapter
->netdev
,
2998 "Gigabit has been disabled, downgrading speed\n");
3004 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3006 /* make sure the receive unit is started */
3007 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3008 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3009 struct e1000_hw
*hw
= &adapter
->hw
;
3010 u32 rctl
= er32(RCTL
);
3011 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3012 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3017 * e1000_watchdog - Timer Call-back
3018 * @data: pointer to adapter cast into an unsigned long
3020 static void e1000_watchdog(unsigned long data
)
3022 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3024 /* Do the rest outside of interrupt context */
3025 schedule_work(&adapter
->watchdog_task
);
3027 /* TODO: make this use queue_delayed_work() */
3030 static void e1000_watchdog_task(struct work_struct
*work
)
3032 struct e1000_adapter
*adapter
= container_of(work
,
3033 struct e1000_adapter
, watchdog_task
);
3034 struct net_device
*netdev
= adapter
->netdev
;
3035 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3036 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3037 struct e1000_hw
*hw
= &adapter
->hw
;
3041 link
= e1000_has_link(adapter
);
3042 if ((netif_carrier_ok(netdev
)) && link
) {
3043 e1000e_enable_receives(adapter
);
3047 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3048 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3049 e1000_update_mng_vlan(adapter
);
3052 if (!netif_carrier_ok(netdev
)) {
3054 /* update snapshot of PHY registers on LSC */
3055 e1000_phy_read_status(adapter
);
3056 mac
->ops
.get_link_up_info(&adapter
->hw
,
3057 &adapter
->link_speed
,
3058 &adapter
->link_duplex
);
3059 e1000_print_link_info(adapter
);
3061 * tweak tx_queue_len according to speed/duplex
3062 * and adjust the timeout factor
3064 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3065 adapter
->tx_timeout_factor
= 1;
3066 switch (adapter
->link_speed
) {
3069 netdev
->tx_queue_len
= 10;
3070 adapter
->tx_timeout_factor
= 14;
3074 netdev
->tx_queue_len
= 100;
3075 /* maybe add some timeout factor ? */
3080 * workaround: re-program speed mode bit after
3083 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3086 tarc0
= er32(TARC(0));
3087 tarc0
&= ~SPEED_MODE_BIT
;
3088 ew32(TARC(0), tarc0
);
3092 * disable TSO for pcie and 10/100 speeds, to avoid
3093 * some hardware issues
3095 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3096 switch (adapter
->link_speed
) {
3100 "10/100 speed: disabling TSO\n");
3101 netdev
->features
&= ~NETIF_F_TSO
;
3102 netdev
->features
&= ~NETIF_F_TSO6
;
3105 netdev
->features
|= NETIF_F_TSO
;
3106 netdev
->features
|= NETIF_F_TSO6
;
3115 * enable transmits in the hardware, need to do this
3116 * after setting TARC(0)
3119 tctl
|= E1000_TCTL_EN
;
3122 netif_carrier_on(netdev
);
3123 netif_tx_wake_all_queues(netdev
);
3125 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3126 mod_timer(&adapter
->phy_info_timer
,
3127 round_jiffies(jiffies
+ 2 * HZ
));
3130 if (netif_carrier_ok(netdev
)) {
3131 adapter
->link_speed
= 0;
3132 adapter
->link_duplex
= 0;
3133 ndev_info(netdev
, "Link is Down\n");
3134 netif_carrier_off(netdev
);
3135 netif_tx_stop_all_queues(netdev
);
3136 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3137 mod_timer(&adapter
->phy_info_timer
,
3138 round_jiffies(jiffies
+ 2 * HZ
));
3140 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3141 schedule_work(&adapter
->reset_task
);
3146 e1000e_update_stats(adapter
);
3148 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3149 adapter
->tpt_old
= adapter
->stats
.tpt
;
3150 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3151 adapter
->colc_old
= adapter
->stats
.colc
;
3153 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3154 adapter
->gorc_old
= adapter
->stats
.gorc
;
3155 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3156 adapter
->gotc_old
= adapter
->stats
.gotc
;
3158 e1000e_update_adaptive(&adapter
->hw
);
3160 if (!netif_carrier_ok(netdev
)) {
3161 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3165 * We've lost link, so the controller stops DMA,
3166 * but we've got queued Tx work that's never going
3167 * to get done, so reset controller to flush Tx.
3168 * (Do the reset outside of interrupt context).
3170 adapter
->tx_timeout_count
++;
3171 schedule_work(&adapter
->reset_task
);
3175 /* Cause software interrupt to ensure Rx ring is cleaned */
3176 ew32(ICS
, E1000_ICS_RXDMT0
);
3178 /* Force detection of hung controller every watchdog period */
3179 adapter
->detect_tx_hung
= 1;
3182 * With 82571 controllers, LAA may be overwritten due to controller
3183 * reset from the other port. Set the appropriate LAA in RAR[0]
3185 if (e1000e_get_laa_state_82571(hw
))
3186 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3188 /* Reset the timer */
3189 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3190 mod_timer(&adapter
->watchdog_timer
,
3191 round_jiffies(jiffies
+ 2 * HZ
));
3194 #define E1000_TX_FLAGS_CSUM 0x00000001
3195 #define E1000_TX_FLAGS_VLAN 0x00000002
3196 #define E1000_TX_FLAGS_TSO 0x00000004
3197 #define E1000_TX_FLAGS_IPV4 0x00000008
3198 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3199 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3201 static int e1000_tso(struct e1000_adapter
*adapter
,
3202 struct sk_buff
*skb
)
3204 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3205 struct e1000_context_desc
*context_desc
;
3206 struct e1000_buffer
*buffer_info
;
3209 u16 ipcse
= 0, tucse
, mss
;
3210 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3213 if (skb_is_gso(skb
)) {
3214 if (skb_header_cloned(skb
)) {
3215 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3220 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3221 mss
= skb_shinfo(skb
)->gso_size
;
3222 if (skb
->protocol
== htons(ETH_P_IP
)) {
3223 struct iphdr
*iph
= ip_hdr(skb
);
3226 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3230 cmd_length
= E1000_TXD_CMD_IP
;
3231 ipcse
= skb_transport_offset(skb
) - 1;
3232 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3233 ipv6_hdr(skb
)->payload_len
= 0;
3234 tcp_hdr(skb
)->check
=
3235 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3236 &ipv6_hdr(skb
)->daddr
,
3240 ipcss
= skb_network_offset(skb
);
3241 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3242 tucss
= skb_transport_offset(skb
);
3243 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3246 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3247 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3249 i
= tx_ring
->next_to_use
;
3250 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3251 buffer_info
= &tx_ring
->buffer_info
[i
];
3253 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3254 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3255 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3256 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3257 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3258 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3259 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3260 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3261 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3263 buffer_info
->time_stamp
= jiffies
;
3264 buffer_info
->next_to_watch
= i
;
3267 if (i
== tx_ring
->count
)
3269 tx_ring
->next_to_use
= i
;
3277 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3279 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3280 struct e1000_context_desc
*context_desc
;
3281 struct e1000_buffer
*buffer_info
;
3285 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
3286 css
= skb_transport_offset(skb
);
3288 i
= tx_ring
->next_to_use
;
3289 buffer_info
= &tx_ring
->buffer_info
[i
];
3290 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3292 context_desc
->lower_setup
.ip_config
= 0;
3293 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3294 context_desc
->upper_setup
.tcp_fields
.tucso
=
3295 css
+ skb
->csum_offset
;
3296 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3297 context_desc
->tcp_seg_setup
.data
= 0;
3298 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
3300 buffer_info
->time_stamp
= jiffies
;
3301 buffer_info
->next_to_watch
= i
;
3304 if (i
== tx_ring
->count
)
3306 tx_ring
->next_to_use
= i
;
3314 #define E1000_MAX_PER_TXD 8192
3315 #define E1000_MAX_TXD_PWR 12
3317 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3318 struct sk_buff
*skb
, unsigned int first
,
3319 unsigned int max_per_txd
, unsigned int nr_frags
,
3322 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3323 struct e1000_buffer
*buffer_info
;
3324 unsigned int len
= skb
->len
- skb
->data_len
;
3325 unsigned int offset
= 0, size
, count
= 0, i
;
3328 i
= tx_ring
->next_to_use
;
3331 buffer_info
= &tx_ring
->buffer_info
[i
];
3332 size
= min(len
, max_per_txd
);
3334 /* Workaround for premature desc write-backs
3335 * in TSO mode. Append 4-byte sentinel desc */
3336 if (mss
&& !nr_frags
&& size
== len
&& size
> 8)
3339 buffer_info
->length
= size
;
3340 /* set time_stamp *before* dma to help avoid a possible race */
3341 buffer_info
->time_stamp
= jiffies
;
3343 pci_map_single(adapter
->pdev
,
3347 if (pci_dma_mapping_error(buffer_info
->dma
)) {
3348 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3349 adapter
->tx_dma_failed
++;
3352 buffer_info
->next_to_watch
= i
;
3358 if (i
== tx_ring
->count
)
3362 for (f
= 0; f
< nr_frags
; f
++) {
3363 struct skb_frag_struct
*frag
;
3365 frag
= &skb_shinfo(skb
)->frags
[f
];
3367 offset
= frag
->page_offset
;
3370 buffer_info
= &tx_ring
->buffer_info
[i
];
3371 size
= min(len
, max_per_txd
);
3372 /* Workaround for premature desc write-backs
3373 * in TSO mode. Append 4-byte sentinel desc */
3374 if (mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8)
3377 buffer_info
->length
= size
;
3378 buffer_info
->time_stamp
= jiffies
;
3380 pci_map_page(adapter
->pdev
,
3385 if (pci_dma_mapping_error(buffer_info
->dma
)) {
3386 dev_err(&adapter
->pdev
->dev
,
3387 "TX DMA page map failed\n");
3388 adapter
->tx_dma_failed
++;
3392 buffer_info
->next_to_watch
= i
;
3399 if (i
== tx_ring
->count
)
3405 i
= tx_ring
->count
- 1;
3409 tx_ring
->buffer_info
[i
].skb
= skb
;
3410 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3415 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3416 int tx_flags
, int count
)
3418 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3419 struct e1000_tx_desc
*tx_desc
= NULL
;
3420 struct e1000_buffer
*buffer_info
;
3421 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3424 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3425 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3427 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3429 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3430 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3433 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3434 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3435 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3438 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3439 txd_lower
|= E1000_TXD_CMD_VLE
;
3440 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3443 i
= tx_ring
->next_to_use
;
3446 buffer_info
= &tx_ring
->buffer_info
[i
];
3447 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3448 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3449 tx_desc
->lower
.data
=
3450 cpu_to_le32(txd_lower
| buffer_info
->length
);
3451 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3454 if (i
== tx_ring
->count
)
3458 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3461 * Force memory writes to complete before letting h/w
3462 * know there are new descriptors to fetch. (Only
3463 * applicable for weak-ordered memory model archs,
3468 tx_ring
->next_to_use
= i
;
3469 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3471 * we need this if more than one processor can write to our tail
3472 * at a time, it synchronizes IO on IA64/Altix systems
3477 #define MINIMUM_DHCP_PACKET_SIZE 282
3478 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3479 struct sk_buff
*skb
)
3481 struct e1000_hw
*hw
= &adapter
->hw
;
3484 if (vlan_tx_tag_present(skb
)) {
3485 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3486 && (adapter
->hw
.mng_cookie
.status
&
3487 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3491 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3494 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
3498 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
3501 if (ip
->protocol
!= IPPROTO_UDP
)
3504 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
3505 if (ntohs(udp
->dest
) != 67)
3508 offset
= (u8
*)udp
+ 8 - skb
->data
;
3509 length
= skb
->len
- offset
;
3510 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
3516 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3518 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3520 netif_stop_queue(netdev
);
3522 * Herbert's original patch had:
3523 * smp_mb__after_netif_stop_queue();
3524 * but since that doesn't exist yet, just open code it.
3529 * We need to check again in a case another CPU has just
3530 * made room available.
3532 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
3536 netif_start_queue(netdev
);
3537 ++adapter
->restart_queue
;
3541 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3543 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3545 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
3547 return __e1000_maybe_stop_tx(netdev
, size
);
3550 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3551 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3553 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3554 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3556 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
3557 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3558 unsigned int tx_flags
= 0;
3559 unsigned int len
= skb
->len
- skb
->data_len
;
3560 unsigned long irq_flags
;
3561 unsigned int nr_frags
;
3567 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
3568 dev_kfree_skb_any(skb
);
3569 return NETDEV_TX_OK
;
3572 if (skb
->len
<= 0) {
3573 dev_kfree_skb_any(skb
);
3574 return NETDEV_TX_OK
;
3577 mss
= skb_shinfo(skb
)->gso_size
;
3579 * The controller does a simple calculation to
3580 * make sure there is enough room in the FIFO before
3581 * initiating the DMA for each buffer. The calc is:
3582 * 4 = ceil(buffer len/mss). To make sure we don't
3583 * overrun the FIFO, adjust the max buffer len if mss
3588 max_per_txd
= min(mss
<< 2, max_per_txd
);
3589 max_txd_pwr
= fls(max_per_txd
) - 1;
3592 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
3593 * points to just header, pull a few bytes of payload from
3594 * frags into skb->data
3596 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3598 * we do this workaround for ES2LAN, but it is un-necessary,
3599 * avoiding it could save a lot of cycles
3601 if (skb
->data_len
&& (hdr_len
== len
)) {
3602 unsigned int pull_size
;
3604 pull_size
= min((unsigned int)4, skb
->data_len
);
3605 if (!__pskb_pull_tail(skb
, pull_size
)) {
3607 "__pskb_pull_tail failed.\n");
3608 dev_kfree_skb_any(skb
);
3609 return NETDEV_TX_OK
;
3611 len
= skb
->len
- skb
->data_len
;
3615 /* reserve a descriptor for the offload context */
3616 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3620 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3622 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3623 for (f
= 0; f
< nr_frags
; f
++)
3624 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3627 if (adapter
->hw
.mac
.tx_pkt_filtering
)
3628 e1000_transfer_dhcp_info(adapter
, skb
);
3630 if (!spin_trylock_irqsave(&adapter
->tx_queue_lock
, irq_flags
))
3631 /* Collision - tell upper layer to requeue */
3632 return NETDEV_TX_LOCKED
;
3635 * need: count + 2 desc gap to keep tail from touching
3636 * head, otherwise try next time
3638 if (e1000_maybe_stop_tx(netdev
, count
+ 2)) {
3639 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3640 return NETDEV_TX_BUSY
;
3643 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
3644 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3645 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3648 first
= tx_ring
->next_to_use
;
3650 tso
= e1000_tso(adapter
, skb
);
3652 dev_kfree_skb_any(skb
);
3653 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3654 return NETDEV_TX_OK
;
3658 tx_flags
|= E1000_TX_FLAGS_TSO
;
3659 else if (e1000_tx_csum(adapter
, skb
))
3660 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3663 * Old method was to assume IPv4 packet by default if TSO was enabled.
3664 * 82571 hardware supports TSO capabilities for IPv6 as well...
3665 * no longer assume, we must.
3667 if (skb
->protocol
== htons(ETH_P_IP
))
3668 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3670 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
3672 /* handle pci_map_single() error in e1000_tx_map */
3673 dev_kfree_skb_any(skb
);
3674 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3675 return NETDEV_TX_OK
;
3678 e1000_tx_queue(adapter
, tx_flags
, count
);
3680 netdev
->trans_start
= jiffies
;
3682 /* Make sure there is space in the ring for the next send. */
3683 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
3685 spin_unlock_irqrestore(&adapter
->tx_queue_lock
, irq_flags
);
3686 return NETDEV_TX_OK
;
3690 * e1000_tx_timeout - Respond to a Tx Hang
3691 * @netdev: network interface device structure
3693 static void e1000_tx_timeout(struct net_device
*netdev
)
3695 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3697 /* Do the reset outside of interrupt context */
3698 adapter
->tx_timeout_count
++;
3699 schedule_work(&adapter
->reset_task
);
3702 static void e1000_reset_task(struct work_struct
*work
)
3704 struct e1000_adapter
*adapter
;
3705 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
3707 e1000e_reinit_locked(adapter
);
3711 * e1000_get_stats - Get System Network Statistics
3712 * @netdev: network interface device structure
3714 * Returns the address of the device statistics structure.
3715 * The statistics are actually updated from the timer callback.
3717 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
3719 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3721 /* only return the current stats */
3722 return &adapter
->net_stats
;
3726 * e1000_change_mtu - Change the Maximum Transfer Unit
3727 * @netdev: network interface device structure
3728 * @new_mtu: new value for maximum frame size
3730 * Returns 0 on success, negative on failure
3732 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3734 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3735 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3737 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
3738 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3739 ndev_err(netdev
, "Invalid MTU setting\n");
3743 /* Jumbo frame size limits */
3744 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3745 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
3746 ndev_err(netdev
, "Jumbo Frames not supported.\n");
3749 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
3750 ndev_err(netdev
, "Jumbo Frames not supported.\n");
3755 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3756 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3757 ndev_err(netdev
, "MTU > 9216 not supported.\n");
3761 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
3763 /* e1000e_down has a dependency on max_frame_size */
3764 adapter
->max_frame_size
= max_frame
;
3765 if (netif_running(netdev
))
3766 e1000e_down(adapter
);
3769 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3770 * means we reserve 2 more, this pushes us to allocate from the next
3772 * i.e. RXBUFFER_2048 --> size-4096 slab
3773 * However with the new *_jumbo_rx* routines, jumbo receives will use
3777 if (max_frame
<= 256)
3778 adapter
->rx_buffer_len
= 256;
3779 else if (max_frame
<= 512)
3780 adapter
->rx_buffer_len
= 512;
3781 else if (max_frame
<= 1024)
3782 adapter
->rx_buffer_len
= 1024;
3783 else if (max_frame
<= 2048)
3784 adapter
->rx_buffer_len
= 2048;
3786 adapter
->rx_buffer_len
= 4096;
3788 /* adjust allocation if LPE protects us, and we aren't using SBP */
3789 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
3790 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
3791 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
3794 ndev_info(netdev
, "changing MTU from %d to %d\n",
3795 netdev
->mtu
, new_mtu
);
3796 netdev
->mtu
= new_mtu
;
3798 if (netif_running(netdev
))
3801 e1000e_reset(adapter
);
3803 clear_bit(__E1000_RESETTING
, &adapter
->state
);
3808 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
3811 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3812 struct mii_ioctl_data
*data
= if_mii(ifr
);
3814 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
3819 data
->phy_id
= adapter
->hw
.phy
.addr
;
3822 if (!capable(CAP_NET_ADMIN
))
3824 switch (data
->reg_num
& 0x1F) {
3826 data
->val_out
= adapter
->phy_regs
.bmcr
;
3829 data
->val_out
= adapter
->phy_regs
.bmsr
;
3832 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
3835 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
3838 data
->val_out
= adapter
->phy_regs
.advertise
;
3841 data
->val_out
= adapter
->phy_regs
.lpa
;
3844 data
->val_out
= adapter
->phy_regs
.expansion
;
3847 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
3850 data
->val_out
= adapter
->phy_regs
.stat1000
;
3853 data
->val_out
= adapter
->phy_regs
.estatus
;
3866 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3872 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3878 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3880 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3881 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3882 struct e1000_hw
*hw
= &adapter
->hw
;
3883 u32 ctrl
, ctrl_ext
, rctl
, status
;
3884 u32 wufc
= adapter
->wol
;
3887 netif_device_detach(netdev
);
3889 if (netif_running(netdev
)) {
3890 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3891 e1000e_down(adapter
);
3892 e1000_free_irq(adapter
);
3895 retval
= pci_save_state(pdev
);
3899 status
= er32(STATUS
);
3900 if (status
& E1000_STATUS_LU
)
3901 wufc
&= ~E1000_WUFC_LNKC
;
3904 e1000_setup_rctl(adapter
);
3905 e1000_set_multi(netdev
);
3907 /* turn on all-multi mode if wake on multicast is enabled */
3908 if (wufc
& E1000_WUFC_MC
) {
3910 rctl
|= E1000_RCTL_MPE
;
3915 /* advertise wake from D3Cold */
3916 #define E1000_CTRL_ADVD3WUC 0x00100000
3917 /* phy power management enable */
3918 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3919 ctrl
|= E1000_CTRL_ADVD3WUC
|
3920 E1000_CTRL_EN_PHY_PWR_MGMT
;
3923 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
3924 adapter
->hw
.phy
.media_type
==
3925 e1000_media_type_internal_serdes
) {
3926 /* keep the laser running in D3 */
3927 ctrl_ext
= er32(CTRL_EXT
);
3928 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
3929 ew32(CTRL_EXT
, ctrl_ext
);
3932 if (adapter
->flags
& FLAG_IS_ICH
)
3933 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
3935 /* Allow time for pending master requests to run */
3936 e1000e_disable_pcie_master(&adapter
->hw
);
3938 ew32(WUC
, E1000_WUC_PME_EN
);
3940 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3941 pci_enable_wake(pdev
, PCI_D3cold
, 1);
3945 pci_enable_wake(pdev
, PCI_D3hot
, 0);
3946 pci_enable_wake(pdev
, PCI_D3cold
, 0);
3949 /* make sure adapter isn't asleep if manageability is enabled */
3950 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
) {
3951 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3952 pci_enable_wake(pdev
, PCI_D3cold
, 1);
3955 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
3956 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
3959 * Release control of h/w to f/w. If f/w is AMT enabled, this
3960 * would have already happened in close and is redundant.
3962 e1000_release_hw_control(adapter
);
3964 pci_disable_device(pdev
);
3966 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3971 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
3977 * 82573 workaround - disable L1 ASPM on mobile chipsets
3979 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
3980 * resulting in lost data or garbage information on the pci-e link
3981 * level. This could result in (false) bad EEPROM checksum errors,
3982 * long ping times (up to 2s) or even a system freeze/hang.
3984 * Unfortunately this feature saves about 1W power consumption when
3987 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
3988 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
3990 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
3992 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
3997 static int e1000_resume(struct pci_dev
*pdev
)
3999 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4000 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4001 struct e1000_hw
*hw
= &adapter
->hw
;
4004 pci_set_power_state(pdev
, PCI_D0
);
4005 pci_restore_state(pdev
);
4006 e1000e_disable_l1aspm(pdev
);
4008 if (adapter
->need_ioport
)
4009 err
= pci_enable_device(pdev
);
4011 err
= pci_enable_device_mem(pdev
);
4014 "Cannot enable PCI device from suspend\n");
4018 pci_set_master(pdev
);
4020 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4021 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4023 if (netif_running(netdev
)) {
4024 err
= e1000_request_irq(adapter
);
4029 e1000e_power_up_phy(adapter
);
4030 e1000e_reset(adapter
);
4033 e1000_init_manageability(adapter
);
4035 if (netif_running(netdev
))
4038 netif_device_attach(netdev
);
4041 * If the controller has AMT, do not set DRV_LOAD until the interface
4042 * is up. For all other cases, let the f/w know that the h/w is now
4043 * under the control of the driver.
4045 if (!(adapter
->flags
& FLAG_HAS_AMT
) || !e1000e_check_mng_mode(&adapter
->hw
))
4046 e1000_get_hw_control(adapter
);
4052 static void e1000_shutdown(struct pci_dev
*pdev
)
4054 e1000_suspend(pdev
, PMSG_SUSPEND
);
4057 #ifdef CONFIG_NET_POLL_CONTROLLER
4059 * Polling 'interrupt' - used by things like netconsole to send skbs
4060 * without having to re-enable interrupts. It's not called while
4061 * the interrupt routine is executing.
4063 static void e1000_netpoll(struct net_device
*netdev
)
4065 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4067 disable_irq(adapter
->pdev
->irq
);
4068 e1000_intr(adapter
->pdev
->irq
, netdev
);
4070 enable_irq(adapter
->pdev
->irq
);
4075 * e1000_io_error_detected - called when PCI error is detected
4076 * @pdev: Pointer to PCI device
4077 * @state: The current pci connection state
4079 * This function is called after a PCI bus error affecting
4080 * this device has been detected.
4082 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4083 pci_channel_state_t state
)
4085 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4086 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4088 netif_device_detach(netdev
);
4090 if (netif_running(netdev
))
4091 e1000e_down(adapter
);
4092 pci_disable_device(pdev
);
4094 /* Request a slot slot reset. */
4095 return PCI_ERS_RESULT_NEED_RESET
;
4099 * e1000_io_slot_reset - called after the pci bus has been reset.
4100 * @pdev: Pointer to PCI device
4102 * Restart the card from scratch, as if from a cold-boot. Implementation
4103 * resembles the first-half of the e1000_resume routine.
4105 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4107 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4108 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4109 struct e1000_hw
*hw
= &adapter
->hw
;
4112 e1000e_disable_l1aspm(pdev
);
4113 if (adapter
->need_ioport
)
4114 err
= pci_enable_device(pdev
);
4116 err
= pci_enable_device_mem(pdev
);
4119 "Cannot re-enable PCI device after reset.\n");
4120 return PCI_ERS_RESULT_DISCONNECT
;
4122 pci_set_master(pdev
);
4123 pci_restore_state(pdev
);
4125 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4126 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4128 e1000e_reset(adapter
);
4131 return PCI_ERS_RESULT_RECOVERED
;
4135 * e1000_io_resume - called when traffic can start flowing again.
4136 * @pdev: Pointer to PCI device
4138 * This callback is called when the error recovery driver tells us that
4139 * its OK to resume normal operation. Implementation resembles the
4140 * second-half of the e1000_resume routine.
4142 static void e1000_io_resume(struct pci_dev
*pdev
)
4144 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4145 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4147 e1000_init_manageability(adapter
);
4149 if (netif_running(netdev
)) {
4150 if (e1000e_up(adapter
)) {
4152 "can't bring device back up after reset\n");
4157 netif_device_attach(netdev
);
4160 * If the controller has AMT, do not set DRV_LOAD until the interface
4161 * is up. For all other cases, let the f/w know that the h/w is now
4162 * under the control of the driver.
4164 if (!(adapter
->flags
& FLAG_HAS_AMT
) ||
4165 !e1000e_check_mng_mode(&adapter
->hw
))
4166 e1000_get_hw_control(adapter
);
4170 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4172 struct e1000_hw
*hw
= &adapter
->hw
;
4173 struct net_device
*netdev
= adapter
->netdev
;
4176 /* print bus type/speed/width info */
4177 ndev_info(netdev
, "(PCI Express:2.5GB/s:%s) "
4178 "%02x:%02x:%02x:%02x:%02x:%02x\n",
4180 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4183 netdev
->dev_addr
[0], netdev
->dev_addr
[1],
4184 netdev
->dev_addr
[2], netdev
->dev_addr
[3],
4185 netdev
->dev_addr
[4], netdev
->dev_addr
[5]);
4186 ndev_info(netdev
, "Intel(R) PRO/%s Network Connection\n",
4187 (hw
->phy
.type
== e1000_phy_ife
)
4188 ? "10/100" : "1000");
4189 e1000e_read_pba_num(hw
, &pba_num
);
4190 ndev_info(netdev
, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4191 hw
->mac
.type
, hw
->phy
.type
,
4192 (pba_num
>> 8), (pba_num
& 0xff));
4196 * e1000e_is_need_ioport - determine if an adapter needs ioport resources or not
4197 * @pdev: PCI device information struct
4199 * Returns true if an adapters needs ioport resources
4201 static int e1000e_is_need_ioport(struct pci_dev
*pdev
)
4203 switch (pdev
->device
) {
4204 /* Currently there are no adapters that need ioport resources */
4211 * e1000_probe - Device Initialization Routine
4212 * @pdev: PCI device information struct
4213 * @ent: entry in e1000_pci_tbl
4215 * Returns 0 on success, negative on failure
4217 * e1000_probe initializes an adapter identified by a pci_dev structure.
4218 * The OS initialization, configuring of the adapter private structure,
4219 * and a hardware reset occur.
4221 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4222 const struct pci_device_id
*ent
)
4224 struct net_device
*netdev
;
4225 struct e1000_adapter
*adapter
;
4226 struct e1000_hw
*hw
;
4227 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4228 resource_size_t mmio_start
, mmio_len
;
4229 resource_size_t flash_start
, flash_len
;
4231 static int cards_found
;
4232 int i
, err
, pci_using_dac
;
4233 u16 eeprom_data
= 0;
4234 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4235 int bars
, need_ioport
;
4237 e1000e_disable_l1aspm(pdev
);
4239 /* do not allocate ioport bars when not needed */
4240 need_ioport
= e1000e_is_need_ioport(pdev
);
4242 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
4243 err
= pci_enable_device(pdev
);
4245 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
4246 err
= pci_enable_device_mem(pdev
);
4252 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
4254 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
4258 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
4260 err
= pci_set_consistent_dma_mask(pdev
,
4263 dev_err(&pdev
->dev
, "No usable DMA "
4264 "configuration, aborting\n");
4270 err
= pci_request_selected_regions(pdev
, bars
, e1000e_driver_name
);
4274 pci_set_master(pdev
);
4275 pci_save_state(pdev
);
4278 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4280 goto err_alloc_etherdev
;
4282 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4284 pci_set_drvdata(pdev
, netdev
);
4285 adapter
= netdev_priv(netdev
);
4287 adapter
->netdev
= netdev
;
4288 adapter
->pdev
= pdev
;
4290 adapter
->pba
= ei
->pba
;
4291 adapter
->flags
= ei
->flags
;
4292 adapter
->hw
.adapter
= adapter
;
4293 adapter
->hw
.mac
.type
= ei
->mac
;
4294 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4295 adapter
->bars
= bars
;
4296 adapter
->need_ioport
= need_ioport
;
4298 mmio_start
= pci_resource_start(pdev
, 0);
4299 mmio_len
= pci_resource_len(pdev
, 0);
4302 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4303 if (!adapter
->hw
.hw_addr
)
4306 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4307 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4308 flash_start
= pci_resource_start(pdev
, 1);
4309 flash_len
= pci_resource_len(pdev
, 1);
4310 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4311 if (!adapter
->hw
.flash_address
)
4315 /* construct the net_device struct */
4316 netdev
->open
= &e1000_open
;
4317 netdev
->stop
= &e1000_close
;
4318 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
4319 netdev
->get_stats
= &e1000_get_stats
;
4320 netdev
->set_multicast_list
= &e1000_set_multi
;
4321 netdev
->set_mac_address
= &e1000_set_mac
;
4322 netdev
->change_mtu
= &e1000_change_mtu
;
4323 netdev
->do_ioctl
= &e1000_ioctl
;
4324 e1000e_set_ethtool_ops(netdev
);
4325 netdev
->tx_timeout
= &e1000_tx_timeout
;
4326 netdev
->watchdog_timeo
= 5 * HZ
;
4327 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4328 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
4329 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
4330 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
4331 #ifdef CONFIG_NET_POLL_CONTROLLER
4332 netdev
->poll_controller
= e1000_netpoll
;
4334 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4336 netdev
->mem_start
= mmio_start
;
4337 netdev
->mem_end
= mmio_start
+ mmio_len
;
4339 adapter
->bd_number
= cards_found
++;
4341 /* setup adapter struct */
4342 err
= e1000_sw_init(adapter
);
4348 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4349 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4350 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4352 err
= ei
->get_variants(adapter
);
4356 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4358 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4360 /* Copper options */
4361 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4362 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4363 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4364 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4367 if (e1000_check_reset_block(&adapter
->hw
))
4369 "PHY reset is blocked due to SOL/IDER session.\n");
4371 netdev
->features
= NETIF_F_SG
|
4373 NETIF_F_HW_VLAN_TX
|
4376 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4377 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4379 netdev
->features
|= NETIF_F_TSO
;
4380 netdev
->features
|= NETIF_F_TSO6
;
4382 netdev
->vlan_features
|= NETIF_F_TSO
;
4383 netdev
->vlan_features
|= NETIF_F_TSO6
;
4384 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4385 netdev
->vlan_features
|= NETIF_F_SG
;
4388 netdev
->features
|= NETIF_F_HIGHDMA
;
4391 * We should not be using LLTX anymore, but we are still Tx faster with
4394 netdev
->features
|= NETIF_F_LLTX
;
4396 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4397 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4400 * before reading the NVM, reset the controller to
4401 * put the device in a known good starting state
4403 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4406 * systems with ASPM and others may see the checksum fail on the first
4407 * attempt. Let's give it a few tries
4410 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4413 ndev_err(netdev
, "The NVM Checksum Is Not Valid\n");
4419 /* copy the MAC address out of the NVM */
4420 if (e1000e_read_mac_addr(&adapter
->hw
))
4421 ndev_err(netdev
, "NVM Read Error while reading MAC address\n");
4423 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4424 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4426 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4427 ndev_err(netdev
, "Invalid MAC Address: "
4428 "%02x:%02x:%02x:%02x:%02x:%02x\n",
4429 netdev
->perm_addr
[0], netdev
->perm_addr
[1],
4430 netdev
->perm_addr
[2], netdev
->perm_addr
[3],
4431 netdev
->perm_addr
[4], netdev
->perm_addr
[5]);
4436 init_timer(&adapter
->watchdog_timer
);
4437 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4438 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4440 init_timer(&adapter
->phy_info_timer
);
4441 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4442 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4444 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4445 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4447 e1000e_check_options(adapter
);
4449 /* Initialize link parameters. User can change them with ethtool */
4450 adapter
->hw
.mac
.autoneg
= 1;
4451 adapter
->fc_autoneg
= 1;
4452 adapter
->hw
.fc
.original_type
= e1000_fc_default
;
4453 adapter
->hw
.fc
.type
= e1000_fc_default
;
4454 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4456 /* ring size defaults */
4457 adapter
->rx_ring
->count
= 256;
4458 adapter
->tx_ring
->count
= 256;
4461 * Initial Wake on LAN setting - If APM wake is enabled in
4462 * the EEPROM, enable the ACPI Magic Packet filter
4464 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4465 /* APME bit in EEPROM is mapped to WUC.APME */
4466 eeprom_data
= er32(WUC
);
4467 eeprom_apme_mask
= E1000_WUC_APME
;
4468 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
4469 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
4470 (adapter
->hw
.bus
.func
== 1))
4471 e1000_read_nvm(&adapter
->hw
,
4472 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
4474 e1000_read_nvm(&adapter
->hw
,
4475 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
4478 /* fetch WoL from EEPROM */
4479 if (eeprom_data
& eeprom_apme_mask
)
4480 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
4483 * now that we have the eeprom settings, apply the special cases
4484 * where the eeprom may be wrong or the board simply won't support
4485 * wake on lan on a particular port
4487 if (!(adapter
->flags
& FLAG_HAS_WOL
))
4488 adapter
->eeprom_wol
= 0;
4490 /* initialize the wol settings based on the eeprom settings */
4491 adapter
->wol
= adapter
->eeprom_wol
;
4493 /* reset the hardware with the new settings */
4494 e1000e_reset(adapter
);
4497 * If the controller has AMT, do not set DRV_LOAD until the interface
4498 * is up. For all other cases, let the f/w know that the h/w is now
4499 * under the control of the driver.
4501 if (!(adapter
->flags
& FLAG_HAS_AMT
) ||
4502 !e1000e_check_mng_mode(&adapter
->hw
))
4503 e1000_get_hw_control(adapter
);
4505 /* tell the stack to leave us alone until e1000_open() is called */
4506 netif_carrier_off(netdev
);
4507 netif_tx_stop_all_queues(netdev
);
4509 strcpy(netdev
->name
, "eth%d");
4510 err
= register_netdev(netdev
);
4514 e1000_print_device_info(adapter
);
4520 e1000_release_hw_control(adapter
);
4522 if (!e1000_check_reset_block(&adapter
->hw
))
4523 e1000_phy_hw_reset(&adapter
->hw
);
4525 if (adapter
->hw
.flash_address
)
4526 iounmap(adapter
->hw
.flash_address
);
4529 kfree(adapter
->tx_ring
);
4530 kfree(adapter
->rx_ring
);
4532 iounmap(adapter
->hw
.hw_addr
);
4534 free_netdev(netdev
);
4536 pci_release_selected_regions(pdev
, bars
);
4539 pci_disable_device(pdev
);
4544 * e1000_remove - Device Removal Routine
4545 * @pdev: PCI device information struct
4547 * e1000_remove is called by the PCI subsystem to alert the driver
4548 * that it should release a PCI device. The could be caused by a
4549 * Hot-Plug event, or because the driver is going to be removed from
4552 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
4554 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4555 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4558 * flush_scheduled work may reschedule our watchdog task, so
4559 * explicitly disable watchdog tasks from being rescheduled
4561 set_bit(__E1000_DOWN
, &adapter
->state
);
4562 del_timer_sync(&adapter
->watchdog_timer
);
4563 del_timer_sync(&adapter
->phy_info_timer
);
4565 flush_scheduled_work();
4568 * Release control of h/w to f/w. If f/w is AMT enabled, this
4569 * would have already happened in close and is redundant.
4571 e1000_release_hw_control(adapter
);
4573 unregister_netdev(netdev
);
4575 if (!e1000_check_reset_block(&adapter
->hw
))
4576 e1000_phy_hw_reset(&adapter
->hw
);
4578 kfree(adapter
->tx_ring
);
4579 kfree(adapter
->rx_ring
);
4581 iounmap(adapter
->hw
.hw_addr
);
4582 if (adapter
->hw
.flash_address
)
4583 iounmap(adapter
->hw
.flash_address
);
4584 pci_release_selected_regions(pdev
, adapter
->bars
);
4586 free_netdev(netdev
);
4588 pci_disable_device(pdev
);
4591 /* PCI Error Recovery (ERS) */
4592 static struct pci_error_handlers e1000_err_handler
= {
4593 .error_detected
= e1000_io_error_detected
,
4594 .slot_reset
= e1000_io_slot_reset
,
4595 .resume
= e1000_io_resume
,
4598 static struct pci_device_id e1000_pci_tbl
[] = {
4599 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
4600 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
4601 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
4602 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
4603 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
4604 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
4605 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
4606 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
4607 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
4609 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
4610 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
4611 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
4612 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
4614 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
4615 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
4616 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
4618 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
4619 board_80003es2lan
},
4620 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
4621 board_80003es2lan
},
4622 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
4623 board_80003es2lan
},
4624 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
4625 board_80003es2lan
},
4627 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
4628 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
4629 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
4630 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
4631 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
4632 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
4633 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
4635 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
4636 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
4637 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
4638 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
4639 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
4640 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
4641 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
4642 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
4644 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
4645 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
4646 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
4648 { } /* terminate list */
4650 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
4652 /* PCI Device API Driver */
4653 static struct pci_driver e1000_driver
= {
4654 .name
= e1000e_driver_name
,
4655 .id_table
= e1000_pci_tbl
,
4656 .probe
= e1000_probe
,
4657 .remove
= __devexit_p(e1000_remove
),
4659 /* Power Management Hooks */
4660 .suspend
= e1000_suspend
,
4661 .resume
= e1000_resume
,
4663 .shutdown
= e1000_shutdown
,
4664 .err_handler
= &e1000_err_handler
4668 * e1000_init_module - Driver Registration Routine
4670 * e1000_init_module is the first routine called when the driver is
4671 * loaded. All it does is register with the PCI subsystem.
4673 static int __init
e1000_init_module(void)
4676 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
4677 e1000e_driver_name
, e1000e_driver_version
);
4678 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
4679 e1000e_driver_name
);
4680 ret
= pci_register_driver(&e1000_driver
);
4681 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
4682 PM_QOS_DEFAULT_VALUE
);
4686 module_init(e1000_init_module
);
4689 * e1000_exit_module - Driver Exit Cleanup Routine
4691 * e1000_exit_module is called just before the driver is removed
4694 static void __exit
e1000_exit_module(void)
4696 pci_unregister_driver(&e1000_driver
);
4697 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
4699 module_exit(e1000_exit_module
);
4702 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
4703 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
4704 MODULE_LICENSE("GPL");
4705 MODULE_VERSION(DRV_VERSION
);