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>
47 #include <linux/aer.h>
51 #define DRV_VERSION "0.3.3.4-k4"
52 char e1000e_driver_name
[] = "e1000e";
53 const char e1000e_driver_version
[] = DRV_VERSION
;
55 static const struct e1000_info
*e1000_info_tbl
[] = {
56 [board_82571
] = &e1000_82571_info
,
57 [board_82572
] = &e1000_82572_info
,
58 [board_82573
] = &e1000_82573_info
,
59 [board_82574
] = &e1000_82574_info
,
60 [board_82583
] = &e1000_82583_info
,
61 [board_80003es2lan
] = &e1000_es2_info
,
62 [board_ich8lan
] = &e1000_ich8_info
,
63 [board_ich9lan
] = &e1000_ich9_info
,
64 [board_ich10lan
] = &e1000_ich10_info
,
69 * e1000_get_hw_dev_name - return device name string
70 * used by hardware layer to print debugging information
72 char *e1000e_get_hw_dev_name(struct e1000_hw
*hw
)
74 return hw
->adapter
->netdev
->name
;
79 * e1000_desc_unused - calculate if we have unused descriptors
81 static int e1000_desc_unused(struct e1000_ring
*ring
)
83 if (ring
->next_to_clean
> ring
->next_to_use
)
84 return ring
->next_to_clean
- ring
->next_to_use
- 1;
86 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
90 * e1000_receive_skb - helper function to handle Rx indications
91 * @adapter: board private structure
92 * @status: descriptor status field as written by hardware
93 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
94 * @skb: pointer to sk_buff to be indicated to stack
96 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
97 struct net_device
*netdev
,
99 u8 status
, __le16 vlan
)
101 skb
->protocol
= eth_type_trans(skb
, netdev
);
103 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
104 vlan_gro_receive(&adapter
->napi
, adapter
->vlgrp
,
105 le16_to_cpu(vlan
), skb
);
107 napi_gro_receive(&adapter
->napi
, skb
);
111 * e1000_rx_checksum - Receive Checksum Offload for 82543
112 * @adapter: board private structure
113 * @status_err: receive descriptor status and error fields
114 * @csum: receive descriptor csum field
115 * @sk_buff: socket buffer with received data
117 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
118 u32 csum
, struct sk_buff
*skb
)
120 u16 status
= (u16
)status_err
;
121 u8 errors
= (u8
)(status_err
>> 24);
122 skb
->ip_summed
= CHECKSUM_NONE
;
124 /* Ignore Checksum bit is set */
125 if (status
& E1000_RXD_STAT_IXSM
)
127 /* TCP/UDP checksum error bit is set */
128 if (errors
& E1000_RXD_ERR_TCPE
) {
129 /* let the stack verify checksum errors */
130 adapter
->hw_csum_err
++;
134 /* TCP/UDP Checksum has not been calculated */
135 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
138 /* It must be a TCP or UDP packet with a valid checksum */
139 if (status
& E1000_RXD_STAT_TCPCS
) {
140 /* TCP checksum is good */
141 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
144 * IP fragment with UDP payload
145 * Hardware complements the payload checksum, so we undo it
146 * and then put the value in host order for further stack use.
148 __sum16 sum
= (__force __sum16
)htons(csum
);
149 skb
->csum
= csum_unfold(~sum
);
150 skb
->ip_summed
= CHECKSUM_COMPLETE
;
152 adapter
->hw_csum_good
++;
156 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
157 * @adapter: address of board private structure
159 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
162 struct net_device
*netdev
= adapter
->netdev
;
163 struct pci_dev
*pdev
= adapter
->pdev
;
164 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
165 struct e1000_rx_desc
*rx_desc
;
166 struct e1000_buffer
*buffer_info
;
169 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
171 i
= rx_ring
->next_to_use
;
172 buffer_info
= &rx_ring
->buffer_info
[i
];
174 while (cleaned_count
--) {
175 skb
= buffer_info
->skb
;
181 skb
= netdev_alloc_skb(netdev
, bufsz
);
183 /* Better luck next round */
184 adapter
->alloc_rx_buff_failed
++;
189 * Make buffer alignment 2 beyond a 16 byte boundary
190 * this will result in a 16 byte aligned IP header after
191 * the 14 byte MAC header is removed
193 skb_reserve(skb
, NET_IP_ALIGN
);
195 buffer_info
->skb
= skb
;
197 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
198 adapter
->rx_buffer_len
,
200 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
201 dev_err(&pdev
->dev
, "RX DMA map failed\n");
202 adapter
->rx_dma_failed
++;
206 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
207 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
210 if (i
== rx_ring
->count
)
212 buffer_info
= &rx_ring
->buffer_info
[i
];
215 if (rx_ring
->next_to_use
!= i
) {
216 rx_ring
->next_to_use
= i
;
218 i
= (rx_ring
->count
- 1);
221 * Force memory writes to complete before letting h/w
222 * know there are new descriptors to fetch. (Only
223 * applicable for weak-ordered memory model archs,
227 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
232 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
233 * @adapter: address of board private structure
235 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
238 struct net_device
*netdev
= adapter
->netdev
;
239 struct pci_dev
*pdev
= adapter
->pdev
;
240 union e1000_rx_desc_packet_split
*rx_desc
;
241 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
242 struct e1000_buffer
*buffer_info
;
243 struct e1000_ps_page
*ps_page
;
247 i
= rx_ring
->next_to_use
;
248 buffer_info
= &rx_ring
->buffer_info
[i
];
250 while (cleaned_count
--) {
251 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
253 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
254 ps_page
= &buffer_info
->ps_pages
[j
];
255 if (j
>= adapter
->rx_ps_pages
) {
256 /* all unused desc entries get hw null ptr */
257 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
260 if (!ps_page
->page
) {
261 ps_page
->page
= alloc_page(GFP_ATOMIC
);
262 if (!ps_page
->page
) {
263 adapter
->alloc_rx_buff_failed
++;
266 ps_page
->dma
= pci_map_page(pdev
,
270 if (pci_dma_mapping_error(pdev
, ps_page
->dma
)) {
271 dev_err(&adapter
->pdev
->dev
,
272 "RX DMA page map failed\n");
273 adapter
->rx_dma_failed
++;
278 * Refresh the desc even if buffer_addrs
279 * didn't change because each write-back
282 rx_desc
->read
.buffer_addr
[j
+1] =
283 cpu_to_le64(ps_page
->dma
);
286 skb
= netdev_alloc_skb(netdev
,
287 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
290 adapter
->alloc_rx_buff_failed
++;
295 * Make buffer alignment 2 beyond a 16 byte boundary
296 * this will result in a 16 byte aligned IP header after
297 * the 14 byte MAC header is removed
299 skb_reserve(skb
, NET_IP_ALIGN
);
301 buffer_info
->skb
= skb
;
302 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
303 adapter
->rx_ps_bsize0
,
305 if (pci_dma_mapping_error(pdev
, buffer_info
->dma
)) {
306 dev_err(&pdev
->dev
, "RX DMA map failed\n");
307 adapter
->rx_dma_failed
++;
309 dev_kfree_skb_any(skb
);
310 buffer_info
->skb
= NULL
;
314 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
317 if (i
== rx_ring
->count
)
319 buffer_info
= &rx_ring
->buffer_info
[i
];
323 if (rx_ring
->next_to_use
!= i
) {
324 rx_ring
->next_to_use
= i
;
327 i
= (rx_ring
->count
- 1);
330 * Force memory writes to complete before letting h/w
331 * know there are new descriptors to fetch. (Only
332 * applicable for weak-ordered memory model archs,
337 * Hardware increments by 16 bytes, but packet split
338 * descriptors are 32 bytes...so we increment tail
341 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
346 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
347 * @adapter: address of board private structure
348 * @cleaned_count: number of buffers to allocate this pass
351 static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter
*adapter
,
354 struct net_device
*netdev
= adapter
->netdev
;
355 struct pci_dev
*pdev
= adapter
->pdev
;
356 struct e1000_rx_desc
*rx_desc
;
357 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
358 struct e1000_buffer
*buffer_info
;
361 unsigned int bufsz
= 256 -
362 16 /* for skb_reserve */ -
365 i
= rx_ring
->next_to_use
;
366 buffer_info
= &rx_ring
->buffer_info
[i
];
368 while (cleaned_count
--) {
369 skb
= buffer_info
->skb
;
375 skb
= netdev_alloc_skb(netdev
, bufsz
);
376 if (unlikely(!skb
)) {
377 /* Better luck next round */
378 adapter
->alloc_rx_buff_failed
++;
382 /* Make buffer alignment 2 beyond a 16 byte boundary
383 * this will result in a 16 byte aligned IP header after
384 * the 14 byte MAC header is removed
386 skb_reserve(skb
, NET_IP_ALIGN
);
388 buffer_info
->skb
= skb
;
390 /* allocate a new page if necessary */
391 if (!buffer_info
->page
) {
392 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
393 if (unlikely(!buffer_info
->page
)) {
394 adapter
->alloc_rx_buff_failed
++;
399 if (!buffer_info
->dma
)
400 buffer_info
->dma
= pci_map_page(pdev
,
401 buffer_info
->page
, 0,
405 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
406 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
408 if (unlikely(++i
== rx_ring
->count
))
410 buffer_info
= &rx_ring
->buffer_info
[i
];
413 if (likely(rx_ring
->next_to_use
!= i
)) {
414 rx_ring
->next_to_use
= i
;
415 if (unlikely(i
-- == 0))
416 i
= (rx_ring
->count
- 1);
418 /* Force memory writes to complete before letting h/w
419 * know there are new descriptors to fetch. (Only
420 * applicable for weak-ordered memory model archs,
423 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
428 * e1000_clean_rx_irq - Send received data up the network stack; legacy
429 * @adapter: board private structure
431 * the return value indicates whether actual cleaning was done, there
432 * is no guarantee that everything was cleaned
434 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
435 int *work_done
, int work_to_do
)
437 struct net_device
*netdev
= adapter
->netdev
;
438 struct pci_dev
*pdev
= adapter
->pdev
;
439 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
440 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
441 struct e1000_buffer
*buffer_info
, *next_buffer
;
444 int cleaned_count
= 0;
446 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
448 i
= rx_ring
->next_to_clean
;
449 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
450 buffer_info
= &rx_ring
->buffer_info
[i
];
452 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
456 if (*work_done
>= work_to_do
)
460 status
= rx_desc
->status
;
461 skb
= buffer_info
->skb
;
462 buffer_info
->skb
= NULL
;
464 prefetch(skb
->data
- NET_IP_ALIGN
);
467 if (i
== rx_ring
->count
)
469 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
472 next_buffer
= &rx_ring
->buffer_info
[i
];
476 pci_unmap_single(pdev
,
478 adapter
->rx_buffer_len
,
480 buffer_info
->dma
= 0;
482 length
= le16_to_cpu(rx_desc
->length
);
484 /* !EOP means multiple descriptors were used to store a single
485 * packet, also make sure the frame isn't just CRC only */
486 if (!(status
& E1000_RXD_STAT_EOP
) || (length
<= 4)) {
487 /* All receives must fit into a single buffer */
488 e_dbg("%s: Receive packet consumed multiple buffers\n",
491 buffer_info
->skb
= skb
;
495 if (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
) {
497 buffer_info
->skb
= skb
;
501 /* adjust length to remove Ethernet CRC */
502 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
505 total_rx_bytes
+= length
;
509 * code added for copybreak, this should improve
510 * performance for small packets with large amounts
511 * of reassembly being done in the stack
513 if (length
< copybreak
) {
514 struct sk_buff
*new_skb
=
515 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
517 skb_reserve(new_skb
, NET_IP_ALIGN
);
518 skb_copy_to_linear_data_offset(new_skb
,
524 /* save the skb in buffer_info as good */
525 buffer_info
->skb
= skb
;
528 /* else just continue with the old one */
530 /* end copybreak code */
531 skb_put(skb
, length
);
533 /* Receive Checksum Offload */
534 e1000_rx_checksum(adapter
,
536 ((u32
)(rx_desc
->errors
) << 24),
537 le16_to_cpu(rx_desc
->csum
), skb
);
539 e1000_receive_skb(adapter
, netdev
, skb
,status
,rx_desc
->special
);
544 /* return some buffers to hardware, one at a time is too slow */
545 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
546 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
550 /* use prefetched values */
552 buffer_info
= next_buffer
;
554 rx_ring
->next_to_clean
= i
;
556 cleaned_count
= e1000_desc_unused(rx_ring
);
558 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
560 adapter
->total_rx_bytes
+= total_rx_bytes
;
561 adapter
->total_rx_packets
+= total_rx_packets
;
562 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
563 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
567 static void e1000_put_txbuf(struct e1000_adapter
*adapter
,
568 struct e1000_buffer
*buffer_info
)
570 buffer_info
->dma
= 0;
571 if (buffer_info
->skb
) {
572 skb_dma_unmap(&adapter
->pdev
->dev
, buffer_info
->skb
,
574 dev_kfree_skb_any(buffer_info
->skb
);
575 buffer_info
->skb
= NULL
;
577 buffer_info
->time_stamp
= 0;
580 static void e1000_print_tx_hang(struct e1000_adapter
*adapter
)
582 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
583 unsigned int i
= tx_ring
->next_to_clean
;
584 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
585 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
587 /* detected Tx unit hang */
588 e_err("Detected Tx Unit Hang:\n"
591 " next_to_use <%x>\n"
592 " next_to_clean <%x>\n"
593 "buffer_info[next_to_clean]:\n"
594 " time_stamp <%lx>\n"
595 " next_to_watch <%x>\n"
597 " next_to_watch.status <%x>\n",
598 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
599 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
600 tx_ring
->next_to_use
,
601 tx_ring
->next_to_clean
,
602 tx_ring
->buffer_info
[eop
].time_stamp
,
605 eop_desc
->upper
.fields
.status
);
609 * e1000_clean_tx_irq - Reclaim resources after transmit completes
610 * @adapter: board private structure
612 * the return value indicates whether actual cleaning was done, there
613 * is no guarantee that everything was cleaned
615 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
617 struct net_device
*netdev
= adapter
->netdev
;
618 struct e1000_hw
*hw
= &adapter
->hw
;
619 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
620 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
621 struct e1000_buffer
*buffer_info
;
623 unsigned int count
= 0;
624 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
626 i
= tx_ring
->next_to_clean
;
627 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
628 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
630 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
631 (count
< tx_ring
->count
)) {
632 bool cleaned
= false;
633 for (; !cleaned
; count
++) {
634 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
635 buffer_info
= &tx_ring
->buffer_info
[i
];
636 cleaned
= (i
== eop
);
639 struct sk_buff
*skb
= buffer_info
->skb
;
640 unsigned int segs
, bytecount
;
641 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
642 /* multiply data chunks by size of headers */
643 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
645 total_tx_packets
+= segs
;
646 total_tx_bytes
+= bytecount
;
649 e1000_put_txbuf(adapter
, buffer_info
);
650 tx_desc
->upper
.data
= 0;
653 if (i
== tx_ring
->count
)
657 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
658 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
661 tx_ring
->next_to_clean
= i
;
663 #define TX_WAKE_THRESHOLD 32
664 if (count
&& netif_carrier_ok(netdev
) &&
665 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
666 /* Make sure that anybody stopping the queue after this
667 * sees the new next_to_clean.
671 if (netif_queue_stopped(netdev
) &&
672 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
673 netif_wake_queue(netdev
);
674 ++adapter
->restart_queue
;
678 if (adapter
->detect_tx_hung
) {
679 /* Detect a transmit hang in hardware, this serializes the
680 * check with the clearing of time_stamp and movement of i */
681 adapter
->detect_tx_hung
= 0;
682 if (tx_ring
->buffer_info
[i
].time_stamp
&&
683 time_after(jiffies
, tx_ring
->buffer_info
[i
].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
;
694 return (count
< tx_ring
->count
);
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 e_dbg("%s: Packet Split buffers didn't pick up the "
751 "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 e_dbg("%s: Last part of the packet spanning multiple "
765 "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
);
805 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
813 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
814 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
818 ps_page
= &buffer_info
->ps_pages
[j
];
819 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
822 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
823 ps_page
->page
= NULL
;
825 skb
->data_len
+= length
;
826 skb
->truesize
+= length
;
829 /* strip the ethernet crc, problem is we're using pages now so
830 * this whole operation can get a little cpu intensive
832 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
833 pskb_trim(skb
, skb
->len
- 4);
836 total_rx_bytes
+= skb
->len
;
839 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
840 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
842 if (rx_desc
->wb
.upper
.header_status
&
843 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
844 adapter
->rx_hdr_split
++;
846 e1000_receive_skb(adapter
, netdev
, skb
,
847 staterr
, rx_desc
->wb
.middle
.vlan
);
850 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
851 buffer_info
->skb
= NULL
;
853 /* return some buffers to hardware, one at a time is too slow */
854 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
855 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
859 /* use prefetched values */
861 buffer_info
= next_buffer
;
863 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
865 rx_ring
->next_to_clean
= i
;
867 cleaned_count
= e1000_desc_unused(rx_ring
);
869 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
871 adapter
->total_rx_bytes
+= total_rx_bytes
;
872 adapter
->total_rx_packets
+= total_rx_packets
;
873 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
874 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
879 * e1000_consume_page - helper function
881 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
886 skb
->data_len
+= length
;
887 skb
->truesize
+= length
;
891 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
892 * @adapter: board private structure
894 * the return value indicates whether actual cleaning was done, there
895 * is no guarantee that everything was cleaned
898 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
899 int *work_done
, int work_to_do
)
901 struct net_device
*netdev
= adapter
->netdev
;
902 struct pci_dev
*pdev
= adapter
->pdev
;
903 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
904 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
905 struct e1000_buffer
*buffer_info
, *next_buffer
;
908 int cleaned_count
= 0;
909 bool cleaned
= false;
910 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
912 i
= rx_ring
->next_to_clean
;
913 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
914 buffer_info
= &rx_ring
->buffer_info
[i
];
916 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
920 if (*work_done
>= work_to_do
)
924 status
= rx_desc
->status
;
925 skb
= buffer_info
->skb
;
926 buffer_info
->skb
= NULL
;
929 if (i
== rx_ring
->count
)
931 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
934 next_buffer
= &rx_ring
->buffer_info
[i
];
938 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
940 buffer_info
->dma
= 0;
942 length
= le16_to_cpu(rx_desc
->length
);
944 /* errors is only valid for DD + EOP descriptors */
945 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
946 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
947 /* recycle both page and skb */
948 buffer_info
->skb
= skb
;
949 /* an error means any chain goes out the window
951 if (rx_ring
->rx_skb_top
)
952 dev_kfree_skb(rx_ring
->rx_skb_top
);
953 rx_ring
->rx_skb_top
= NULL
;
957 #define rxtop rx_ring->rx_skb_top
958 if (!(status
& E1000_RXD_STAT_EOP
)) {
959 /* this descriptor is only the beginning (or middle) */
961 /* this is the beginning of a chain */
963 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
966 /* this is the middle of a chain */
967 skb_fill_page_desc(rxtop
,
968 skb_shinfo(rxtop
)->nr_frags
,
969 buffer_info
->page
, 0, length
);
970 /* re-use the skb, only consumed the page */
971 buffer_info
->skb
= skb
;
973 e1000_consume_page(buffer_info
, rxtop
, length
);
977 /* end of the chain */
978 skb_fill_page_desc(rxtop
,
979 skb_shinfo(rxtop
)->nr_frags
,
980 buffer_info
->page
, 0, length
);
981 /* re-use the current skb, we only consumed the
983 buffer_info
->skb
= skb
;
986 e1000_consume_page(buffer_info
, skb
, length
);
988 /* no chain, got EOP, this buf is the packet
989 * copybreak to save the put_page/alloc_page */
990 if (length
<= copybreak
&&
991 skb_tailroom(skb
) >= length
) {
993 vaddr
= kmap_atomic(buffer_info
->page
,
994 KM_SKB_DATA_SOFTIRQ
);
995 memcpy(skb_tail_pointer(skb
), vaddr
,
998 KM_SKB_DATA_SOFTIRQ
);
999 /* re-use the page, so don't erase
1000 * buffer_info->page */
1001 skb_put(skb
, length
);
1003 skb_fill_page_desc(skb
, 0,
1004 buffer_info
->page
, 0,
1006 e1000_consume_page(buffer_info
, skb
,
1012 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1013 e1000_rx_checksum(adapter
,
1015 ((u32
)(rx_desc
->errors
) << 24),
1016 le16_to_cpu(rx_desc
->csum
), skb
);
1018 /* probably a little skewed due to removing CRC */
1019 total_rx_bytes
+= skb
->len
;
1022 /* eth type trans needs skb->data to point to something */
1023 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1024 e_err("pskb_may_pull failed.\n");
1029 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1033 rx_desc
->status
= 0;
1035 /* return some buffers to hardware, one at a time is too slow */
1036 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1037 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1041 /* use prefetched values */
1043 buffer_info
= next_buffer
;
1045 rx_ring
->next_to_clean
= i
;
1047 cleaned_count
= e1000_desc_unused(rx_ring
);
1049 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1051 adapter
->total_rx_bytes
+= total_rx_bytes
;
1052 adapter
->total_rx_packets
+= total_rx_packets
;
1053 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1054 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1059 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1060 * @adapter: board private structure
1062 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1064 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1065 struct e1000_buffer
*buffer_info
;
1066 struct e1000_ps_page
*ps_page
;
1067 struct pci_dev
*pdev
= adapter
->pdev
;
1070 /* Free all the Rx ring sk_buffs */
1071 for (i
= 0; i
< rx_ring
->count
; i
++) {
1072 buffer_info
= &rx_ring
->buffer_info
[i
];
1073 if (buffer_info
->dma
) {
1074 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1075 pci_unmap_single(pdev
, buffer_info
->dma
,
1076 adapter
->rx_buffer_len
,
1077 PCI_DMA_FROMDEVICE
);
1078 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1079 pci_unmap_page(pdev
, buffer_info
->dma
,
1081 PCI_DMA_FROMDEVICE
);
1082 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1083 pci_unmap_single(pdev
, buffer_info
->dma
,
1084 adapter
->rx_ps_bsize0
,
1085 PCI_DMA_FROMDEVICE
);
1086 buffer_info
->dma
= 0;
1089 if (buffer_info
->page
) {
1090 put_page(buffer_info
->page
);
1091 buffer_info
->page
= NULL
;
1094 if (buffer_info
->skb
) {
1095 dev_kfree_skb(buffer_info
->skb
);
1096 buffer_info
->skb
= NULL
;
1099 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1100 ps_page
= &buffer_info
->ps_pages
[j
];
1103 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1104 PCI_DMA_FROMDEVICE
);
1106 put_page(ps_page
->page
);
1107 ps_page
->page
= NULL
;
1111 /* there also may be some cached data from a chained receive */
1112 if (rx_ring
->rx_skb_top
) {
1113 dev_kfree_skb(rx_ring
->rx_skb_top
);
1114 rx_ring
->rx_skb_top
= NULL
;
1117 /* Zero out the descriptor ring */
1118 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1120 rx_ring
->next_to_clean
= 0;
1121 rx_ring
->next_to_use
= 0;
1123 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1124 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1127 static void e1000e_downshift_workaround(struct work_struct
*work
)
1129 struct e1000_adapter
*adapter
= container_of(work
,
1130 struct e1000_adapter
, downshift_task
);
1132 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1136 * e1000_intr_msi - Interrupt Handler
1137 * @irq: interrupt number
1138 * @data: pointer to a network interface device structure
1140 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1142 struct net_device
*netdev
= data
;
1143 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1144 struct e1000_hw
*hw
= &adapter
->hw
;
1145 u32 icr
= er32(ICR
);
1148 * read ICR disables interrupts using IAM
1151 if (icr
& E1000_ICR_LSC
) {
1152 hw
->mac
.get_link_status
= 1;
1154 * ICH8 workaround-- Call gig speed drop workaround on cable
1155 * disconnect (LSC) before accessing any PHY registers
1157 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1158 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1159 schedule_work(&adapter
->downshift_task
);
1162 * 80003ES2LAN workaround-- For packet buffer work-around on
1163 * link down event; disable receives here in the ISR and reset
1164 * adapter in watchdog
1166 if (netif_carrier_ok(netdev
) &&
1167 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1168 /* disable receives */
1169 u32 rctl
= er32(RCTL
);
1170 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1171 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1173 /* guard against interrupt when we're going down */
1174 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1175 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1178 if (napi_schedule_prep(&adapter
->napi
)) {
1179 adapter
->total_tx_bytes
= 0;
1180 adapter
->total_tx_packets
= 0;
1181 adapter
->total_rx_bytes
= 0;
1182 adapter
->total_rx_packets
= 0;
1183 __napi_schedule(&adapter
->napi
);
1190 * e1000_intr - Interrupt Handler
1191 * @irq: interrupt number
1192 * @data: pointer to a network interface device structure
1194 static irqreturn_t
e1000_intr(int irq
, void *data
)
1196 struct net_device
*netdev
= data
;
1197 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1198 struct e1000_hw
*hw
= &adapter
->hw
;
1199 u32 rctl
, icr
= er32(ICR
);
1202 return IRQ_NONE
; /* Not our interrupt */
1205 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1206 * not set, then the adapter didn't send an interrupt
1208 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1212 * Interrupt Auto-Mask...upon reading ICR,
1213 * interrupts are masked. No need for the
1217 if (icr
& E1000_ICR_LSC
) {
1218 hw
->mac
.get_link_status
= 1;
1220 * ICH8 workaround-- Call gig speed drop workaround on cable
1221 * disconnect (LSC) before accessing any PHY registers
1223 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1224 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1225 schedule_work(&adapter
->downshift_task
);
1228 * 80003ES2LAN workaround--
1229 * For packet buffer work-around on link down event;
1230 * disable receives here in the ISR and
1231 * reset adapter in watchdog
1233 if (netif_carrier_ok(netdev
) &&
1234 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1235 /* disable receives */
1237 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1238 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1240 /* guard against interrupt when we're going down */
1241 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1242 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1245 if (napi_schedule_prep(&adapter
->napi
)) {
1246 adapter
->total_tx_bytes
= 0;
1247 adapter
->total_tx_packets
= 0;
1248 adapter
->total_rx_bytes
= 0;
1249 adapter
->total_rx_packets
= 0;
1250 __napi_schedule(&adapter
->napi
);
1256 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1258 struct net_device
*netdev
= data
;
1259 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1260 struct e1000_hw
*hw
= &adapter
->hw
;
1261 u32 icr
= er32(ICR
);
1263 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1264 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1265 ew32(IMS
, E1000_IMS_OTHER
);
1269 if (icr
& adapter
->eiac_mask
)
1270 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1272 if (icr
& E1000_ICR_OTHER
) {
1273 if (!(icr
& E1000_ICR_LSC
))
1274 goto no_link_interrupt
;
1275 hw
->mac
.get_link_status
= 1;
1276 /* guard against interrupt when we're going down */
1277 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1278 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1282 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1283 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1289 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1291 struct net_device
*netdev
= data
;
1292 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1293 struct e1000_hw
*hw
= &adapter
->hw
;
1294 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1297 adapter
->total_tx_bytes
= 0;
1298 adapter
->total_tx_packets
= 0;
1300 if (!e1000_clean_tx_irq(adapter
))
1301 /* Ring was not completely cleaned, so fire another interrupt */
1302 ew32(ICS
, tx_ring
->ims_val
);
1307 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1309 struct net_device
*netdev
= data
;
1310 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1312 /* Write the ITR value calculated at the end of the
1313 * previous interrupt.
1315 if (adapter
->rx_ring
->set_itr
) {
1316 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1317 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1318 adapter
->rx_ring
->set_itr
= 0;
1321 if (napi_schedule_prep(&adapter
->napi
)) {
1322 adapter
->total_rx_bytes
= 0;
1323 adapter
->total_rx_packets
= 0;
1324 __napi_schedule(&adapter
->napi
);
1330 * e1000_configure_msix - Configure MSI-X hardware
1332 * e1000_configure_msix sets up the hardware to properly
1333 * generate MSI-X interrupts.
1335 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1337 struct e1000_hw
*hw
= &adapter
->hw
;
1338 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1339 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1341 u32 ctrl_ext
, ivar
= 0;
1343 adapter
->eiac_mask
= 0;
1345 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1346 if (hw
->mac
.type
== e1000_82574
) {
1347 u32 rfctl
= er32(RFCTL
);
1348 rfctl
|= E1000_RFCTL_ACK_DIS
;
1352 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1353 /* Configure Rx vector */
1354 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1355 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1356 if (rx_ring
->itr_val
)
1357 writel(1000000000 / (rx_ring
->itr_val
* 256),
1358 hw
->hw_addr
+ rx_ring
->itr_register
);
1360 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1361 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1363 /* Configure Tx vector */
1364 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1366 if (tx_ring
->itr_val
)
1367 writel(1000000000 / (tx_ring
->itr_val
* 256),
1368 hw
->hw_addr
+ tx_ring
->itr_register
);
1370 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1371 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1372 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1374 /* set vector for Other Causes, e.g. link changes */
1376 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1377 if (rx_ring
->itr_val
)
1378 writel(1000000000 / (rx_ring
->itr_val
* 256),
1379 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1381 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1383 /* Cause Tx interrupts on every write back */
1388 /* enable MSI-X PBA support */
1389 ctrl_ext
= er32(CTRL_EXT
);
1390 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1392 /* Auto-Mask Other interrupts upon ICR read */
1393 #define E1000_EIAC_MASK_82574 0x01F00000
1394 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1395 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1396 ew32(CTRL_EXT
, ctrl_ext
);
1400 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1402 if (adapter
->msix_entries
) {
1403 pci_disable_msix(adapter
->pdev
);
1404 kfree(adapter
->msix_entries
);
1405 adapter
->msix_entries
= NULL
;
1406 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1407 pci_disable_msi(adapter
->pdev
);
1408 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1415 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1417 * Attempt to configure interrupts using the best available
1418 * capabilities of the hardware and kernel.
1420 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1426 switch (adapter
->int_mode
) {
1427 case E1000E_INT_MODE_MSIX
:
1428 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1429 numvecs
= 3; /* RxQ0, TxQ0 and other */
1430 adapter
->msix_entries
= kcalloc(numvecs
,
1431 sizeof(struct msix_entry
),
1433 if (adapter
->msix_entries
) {
1434 for (i
= 0; i
< numvecs
; i
++)
1435 adapter
->msix_entries
[i
].entry
= i
;
1437 err
= pci_enable_msix(adapter
->pdev
,
1438 adapter
->msix_entries
,
1443 /* MSI-X failed, so fall through and try MSI */
1444 e_err("Failed to initialize MSI-X interrupts. "
1445 "Falling back to MSI interrupts.\n");
1446 e1000e_reset_interrupt_capability(adapter
);
1448 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1450 case E1000E_INT_MODE_MSI
:
1451 if (!pci_enable_msi(adapter
->pdev
)) {
1452 adapter
->flags
|= FLAG_MSI_ENABLED
;
1454 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1455 e_err("Failed to initialize MSI interrupts. Falling "
1456 "back to legacy interrupts.\n");
1459 case E1000E_INT_MODE_LEGACY
:
1460 /* Don't do anything; this is the system default */
1468 * e1000_request_msix - Initialize MSI-X interrupts
1470 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1473 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1475 struct net_device
*netdev
= adapter
->netdev
;
1476 int err
= 0, vector
= 0;
1478 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1479 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1481 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1482 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1483 &e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1487 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1488 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1491 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1492 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1494 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1495 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1496 &e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1500 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1501 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1504 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1505 &e1000_msix_other
, 0, netdev
->name
, netdev
);
1509 e1000_configure_msix(adapter
);
1516 * e1000_request_irq - initialize interrupts
1518 * Attempts to configure interrupts using the best available
1519 * capabilities of the hardware and kernel.
1521 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1523 struct net_device
*netdev
= adapter
->netdev
;
1526 if (adapter
->msix_entries
) {
1527 err
= e1000_request_msix(adapter
);
1530 /* fall back to MSI */
1531 e1000e_reset_interrupt_capability(adapter
);
1532 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1533 e1000e_set_interrupt_capability(adapter
);
1535 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1536 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, 0,
1537 netdev
->name
, netdev
);
1541 /* fall back to legacy interrupt */
1542 e1000e_reset_interrupt_capability(adapter
);
1543 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1546 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, IRQF_SHARED
,
1547 netdev
->name
, netdev
);
1549 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1554 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1556 struct net_device
*netdev
= adapter
->netdev
;
1558 if (adapter
->msix_entries
) {
1561 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1564 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1567 /* Other Causes interrupt vector */
1568 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1572 free_irq(adapter
->pdev
->irq
, netdev
);
1576 * e1000_irq_disable - Mask off interrupt generation on the NIC
1578 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1580 struct e1000_hw
*hw
= &adapter
->hw
;
1583 if (adapter
->msix_entries
)
1584 ew32(EIAC_82574
, 0);
1586 synchronize_irq(adapter
->pdev
->irq
);
1590 * e1000_irq_enable - Enable default interrupt generation settings
1592 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1594 struct e1000_hw
*hw
= &adapter
->hw
;
1596 if (adapter
->msix_entries
) {
1597 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1598 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1600 ew32(IMS
, IMS_ENABLE_MASK
);
1606 * e1000_get_hw_control - get control of the h/w from f/w
1607 * @adapter: address of board private structure
1609 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1610 * For ASF and Pass Through versions of f/w this means that
1611 * the driver is loaded. For AMT version (only with 82573)
1612 * of the f/w this means that the network i/f is open.
1614 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1616 struct e1000_hw
*hw
= &adapter
->hw
;
1620 /* Let firmware know the driver has taken over */
1621 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1623 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1624 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1625 ctrl_ext
= er32(CTRL_EXT
);
1626 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1631 * e1000_release_hw_control - release control of the h/w to f/w
1632 * @adapter: address of board private structure
1634 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1635 * For ASF and Pass Through versions of f/w this means that the
1636 * driver is no longer loaded. For AMT version (only with 82573) i
1637 * of the f/w this means that the network i/f is closed.
1640 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1642 struct e1000_hw
*hw
= &adapter
->hw
;
1646 /* Let firmware taken over control of h/w */
1647 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1649 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1650 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1651 ctrl_ext
= er32(CTRL_EXT
);
1652 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1657 * @e1000_alloc_ring - allocate memory for a ring structure
1659 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1660 struct e1000_ring
*ring
)
1662 struct pci_dev
*pdev
= adapter
->pdev
;
1664 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1673 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1674 * @adapter: board private structure
1676 * Return 0 on success, negative on failure
1678 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1680 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1681 int err
= -ENOMEM
, size
;
1683 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1684 tx_ring
->buffer_info
= vmalloc(size
);
1685 if (!tx_ring
->buffer_info
)
1687 memset(tx_ring
->buffer_info
, 0, size
);
1689 /* round up to nearest 4K */
1690 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1691 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1693 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1697 tx_ring
->next_to_use
= 0;
1698 tx_ring
->next_to_clean
= 0;
1702 vfree(tx_ring
->buffer_info
);
1703 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1708 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1709 * @adapter: board private structure
1711 * Returns 0 on success, negative on failure
1713 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1715 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1716 struct e1000_buffer
*buffer_info
;
1717 int i
, size
, desc_len
, err
= -ENOMEM
;
1719 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1720 rx_ring
->buffer_info
= vmalloc(size
);
1721 if (!rx_ring
->buffer_info
)
1723 memset(rx_ring
->buffer_info
, 0, size
);
1725 for (i
= 0; i
< rx_ring
->count
; i
++) {
1726 buffer_info
= &rx_ring
->buffer_info
[i
];
1727 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1728 sizeof(struct e1000_ps_page
),
1730 if (!buffer_info
->ps_pages
)
1734 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1736 /* Round up to nearest 4K */
1737 rx_ring
->size
= rx_ring
->count
* desc_len
;
1738 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1740 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1744 rx_ring
->next_to_clean
= 0;
1745 rx_ring
->next_to_use
= 0;
1746 rx_ring
->rx_skb_top
= NULL
;
1751 for (i
= 0; i
< rx_ring
->count
; i
++) {
1752 buffer_info
= &rx_ring
->buffer_info
[i
];
1753 kfree(buffer_info
->ps_pages
);
1756 vfree(rx_ring
->buffer_info
);
1757 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1762 * e1000_clean_tx_ring - Free Tx Buffers
1763 * @adapter: board private structure
1765 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1767 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1768 struct e1000_buffer
*buffer_info
;
1772 for (i
= 0; i
< tx_ring
->count
; i
++) {
1773 buffer_info
= &tx_ring
->buffer_info
[i
];
1774 e1000_put_txbuf(adapter
, buffer_info
);
1777 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1778 memset(tx_ring
->buffer_info
, 0, size
);
1780 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1782 tx_ring
->next_to_use
= 0;
1783 tx_ring
->next_to_clean
= 0;
1785 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1786 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1790 * e1000e_free_tx_resources - Free Tx Resources per Queue
1791 * @adapter: board private structure
1793 * Free all transmit software resources
1795 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1797 struct pci_dev
*pdev
= adapter
->pdev
;
1798 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1800 e1000_clean_tx_ring(adapter
);
1802 vfree(tx_ring
->buffer_info
);
1803 tx_ring
->buffer_info
= NULL
;
1805 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1807 tx_ring
->desc
= NULL
;
1811 * e1000e_free_rx_resources - Free Rx Resources
1812 * @adapter: board private structure
1814 * Free all receive software resources
1817 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1819 struct pci_dev
*pdev
= adapter
->pdev
;
1820 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1823 e1000_clean_rx_ring(adapter
);
1825 for (i
= 0; i
< rx_ring
->count
; i
++) {
1826 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1829 vfree(rx_ring
->buffer_info
);
1830 rx_ring
->buffer_info
= NULL
;
1832 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1834 rx_ring
->desc
= NULL
;
1838 * e1000_update_itr - update the dynamic ITR value based on statistics
1839 * @adapter: pointer to adapter
1840 * @itr_setting: current adapter->itr
1841 * @packets: the number of packets during this measurement interval
1842 * @bytes: the number of bytes during this measurement interval
1844 * Stores a new ITR value based on packets and byte
1845 * counts during the last interrupt. The advantage of per interrupt
1846 * computation is faster updates and more accurate ITR for the current
1847 * traffic pattern. Constants in this function were computed
1848 * based on theoretical maximum wire speed and thresholds were set based
1849 * on testing data as well as attempting to minimize response time
1850 * while increasing bulk throughput. This functionality is controlled
1851 * by the InterruptThrottleRate module parameter.
1853 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1854 u16 itr_setting
, int packets
,
1857 unsigned int retval
= itr_setting
;
1860 goto update_itr_done
;
1862 switch (itr_setting
) {
1863 case lowest_latency
:
1864 /* handle TSO and jumbo frames */
1865 if (bytes
/packets
> 8000)
1866 retval
= bulk_latency
;
1867 else if ((packets
< 5) && (bytes
> 512)) {
1868 retval
= low_latency
;
1871 case low_latency
: /* 50 usec aka 20000 ints/s */
1872 if (bytes
> 10000) {
1873 /* this if handles the TSO accounting */
1874 if (bytes
/packets
> 8000) {
1875 retval
= bulk_latency
;
1876 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1877 retval
= bulk_latency
;
1878 } else if ((packets
> 35)) {
1879 retval
= lowest_latency
;
1881 } else if (bytes
/packets
> 2000) {
1882 retval
= bulk_latency
;
1883 } else if (packets
<= 2 && bytes
< 512) {
1884 retval
= lowest_latency
;
1887 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1888 if (bytes
> 25000) {
1890 retval
= low_latency
;
1892 } else if (bytes
< 6000) {
1893 retval
= low_latency
;
1902 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1904 struct e1000_hw
*hw
= &adapter
->hw
;
1906 u32 new_itr
= adapter
->itr
;
1908 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1909 if (adapter
->link_speed
!= SPEED_1000
) {
1915 adapter
->tx_itr
= e1000_update_itr(adapter
,
1917 adapter
->total_tx_packets
,
1918 adapter
->total_tx_bytes
);
1919 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1920 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1921 adapter
->tx_itr
= low_latency
;
1923 adapter
->rx_itr
= e1000_update_itr(adapter
,
1925 adapter
->total_rx_packets
,
1926 adapter
->total_rx_bytes
);
1927 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1928 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1929 adapter
->rx_itr
= low_latency
;
1931 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1933 switch (current_itr
) {
1934 /* counts and packets in update_itr are dependent on these numbers */
1935 case lowest_latency
:
1939 new_itr
= 20000; /* aka hwitr = ~200 */
1949 if (new_itr
!= adapter
->itr
) {
1951 * this attempts to bias the interrupt rate towards Bulk
1952 * by adding intermediate steps when interrupt rate is
1955 new_itr
= new_itr
> adapter
->itr
?
1956 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1958 adapter
->itr
= new_itr
;
1959 adapter
->rx_ring
->itr_val
= new_itr
;
1960 if (adapter
->msix_entries
)
1961 adapter
->rx_ring
->set_itr
= 1;
1963 ew32(ITR
, 1000000000 / (new_itr
* 256));
1968 * e1000_alloc_queues - Allocate memory for all rings
1969 * @adapter: board private structure to initialize
1971 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1973 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1974 if (!adapter
->tx_ring
)
1977 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1978 if (!adapter
->rx_ring
)
1983 e_err("Unable to allocate memory for queues\n");
1984 kfree(adapter
->rx_ring
);
1985 kfree(adapter
->tx_ring
);
1990 * e1000_clean - NAPI Rx polling callback
1991 * @napi: struct associated with this polling callback
1992 * @budget: amount of packets driver is allowed to process this poll
1994 static int e1000_clean(struct napi_struct
*napi
, int budget
)
1996 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
1997 struct e1000_hw
*hw
= &adapter
->hw
;
1998 struct net_device
*poll_dev
= adapter
->netdev
;
1999 int tx_cleaned
= 0, work_done
= 0;
2001 adapter
= netdev_priv(poll_dev
);
2003 if (adapter
->msix_entries
&&
2004 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2007 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2010 adapter
->clean_rx(adapter
, &work_done
, budget
);
2015 /* If budget not fully consumed, exit the polling mode */
2016 if (work_done
< budget
) {
2017 if (adapter
->itr_setting
& 3)
2018 e1000_set_itr(adapter
);
2019 napi_complete(napi
);
2020 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2021 if (adapter
->msix_entries
)
2022 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2024 e1000_irq_enable(adapter
);
2031 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2033 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2034 struct e1000_hw
*hw
= &adapter
->hw
;
2037 /* don't update vlan cookie if already programmed */
2038 if ((adapter
->hw
.mng_cookie
.status
&
2039 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2040 (vid
== adapter
->mng_vlan_id
))
2042 /* add VID to filter table */
2043 index
= (vid
>> 5) & 0x7F;
2044 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2045 vfta
|= (1 << (vid
& 0x1F));
2046 e1000e_write_vfta(hw
, index
, vfta
);
2049 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2051 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2052 struct e1000_hw
*hw
= &adapter
->hw
;
2055 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2056 e1000_irq_disable(adapter
);
2057 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2059 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2060 e1000_irq_enable(adapter
);
2062 if ((adapter
->hw
.mng_cookie
.status
&
2063 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2064 (vid
== adapter
->mng_vlan_id
)) {
2065 /* release control to f/w */
2066 e1000_release_hw_control(adapter
);
2070 /* remove VID from filter table */
2071 index
= (vid
>> 5) & 0x7F;
2072 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2073 vfta
&= ~(1 << (vid
& 0x1F));
2074 e1000e_write_vfta(hw
, index
, vfta
);
2077 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2079 struct net_device
*netdev
= adapter
->netdev
;
2080 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2081 u16 old_vid
= adapter
->mng_vlan_id
;
2083 if (!adapter
->vlgrp
)
2086 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2087 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2088 if (adapter
->hw
.mng_cookie
.status
&
2089 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2090 e1000_vlan_rx_add_vid(netdev
, vid
);
2091 adapter
->mng_vlan_id
= vid
;
2094 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2096 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2097 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2099 adapter
->mng_vlan_id
= vid
;
2104 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2105 struct vlan_group
*grp
)
2107 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2108 struct e1000_hw
*hw
= &adapter
->hw
;
2111 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2112 e1000_irq_disable(adapter
);
2113 adapter
->vlgrp
= grp
;
2116 /* enable VLAN tag insert/strip */
2118 ctrl
|= E1000_CTRL_VME
;
2121 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2122 /* enable VLAN receive filtering */
2124 rctl
&= ~E1000_RCTL_CFIEN
;
2126 e1000_update_mng_vlan(adapter
);
2129 /* disable VLAN tag insert/strip */
2131 ctrl
&= ~E1000_CTRL_VME
;
2134 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2135 if (adapter
->mng_vlan_id
!=
2136 (u16
)E1000_MNG_VLAN_NONE
) {
2137 e1000_vlan_rx_kill_vid(netdev
,
2138 adapter
->mng_vlan_id
);
2139 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2144 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2145 e1000_irq_enable(adapter
);
2148 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2152 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2154 if (!adapter
->vlgrp
)
2157 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2158 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2160 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2164 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
2166 struct e1000_hw
*hw
= &adapter
->hw
;
2169 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2175 * enable receiving management packets to the host. this will probably
2176 * generate destination unreachable messages from the host OS, but
2177 * the packets will be handled on SMBUS
2179 manc
|= E1000_MANC_EN_MNG2HOST
;
2180 manc2h
= er32(MANC2H
);
2181 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2182 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2183 manc2h
|= E1000_MNG2HOST_PORT_623
;
2184 manc2h
|= E1000_MNG2HOST_PORT_664
;
2185 ew32(MANC2H
, manc2h
);
2190 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2191 * @adapter: board private structure
2193 * Configure the Tx unit of the MAC after a reset.
2195 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2197 struct e1000_hw
*hw
= &adapter
->hw
;
2198 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2200 u32 tdlen
, tctl
, tipg
, tarc
;
2203 /* Setup the HW Tx Head and Tail descriptor pointers */
2204 tdba
= tx_ring
->dma
;
2205 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2206 ew32(TDBAL
, (tdba
& DMA_BIT_MASK(32)));
2207 ew32(TDBAH
, (tdba
>> 32));
2211 tx_ring
->head
= E1000_TDH
;
2212 tx_ring
->tail
= E1000_TDT
;
2214 /* Set the default values for the Tx Inter Packet Gap timer */
2215 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2216 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2217 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2219 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2220 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2222 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2223 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2226 /* Set the Tx Interrupt Delay register */
2227 ew32(TIDV
, adapter
->tx_int_delay
);
2228 /* Tx irq moderation */
2229 ew32(TADV
, adapter
->tx_abs_int_delay
);
2231 /* Program the Transmit Control Register */
2233 tctl
&= ~E1000_TCTL_CT
;
2234 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2235 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2237 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2238 tarc
= er32(TARC(0));
2240 * set the speed mode bit, we'll clear it if we're not at
2241 * gigabit link later
2243 #define SPEED_MODE_BIT (1 << 21)
2244 tarc
|= SPEED_MODE_BIT
;
2245 ew32(TARC(0), tarc
);
2248 /* errata: program both queues to unweighted RR */
2249 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2250 tarc
= er32(TARC(0));
2252 ew32(TARC(0), tarc
);
2253 tarc
= er32(TARC(1));
2255 ew32(TARC(1), tarc
);
2258 e1000e_config_collision_dist(hw
);
2260 /* Setup Transmit Descriptor Settings for eop descriptor */
2261 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2263 /* only set IDE if we are delaying interrupts using the timers */
2264 if (adapter
->tx_int_delay
)
2265 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2267 /* enable Report Status bit */
2268 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2272 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
2276 * e1000_setup_rctl - configure the receive control registers
2277 * @adapter: Board private structure
2279 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2280 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2281 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2283 struct e1000_hw
*hw
= &adapter
->hw
;
2288 /* Program MC offset vector base */
2290 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2291 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2292 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2293 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2295 /* Do not Store bad packets */
2296 rctl
&= ~E1000_RCTL_SBP
;
2298 /* Enable Long Packet receive */
2299 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2300 rctl
&= ~E1000_RCTL_LPE
;
2302 rctl
|= E1000_RCTL_LPE
;
2304 /* Some systems expect that the CRC is included in SMBUS traffic. The
2305 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2306 * host memory when this is enabled
2308 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2309 rctl
|= E1000_RCTL_SECRC
;
2311 /* Setup buffer sizes */
2312 rctl
&= ~E1000_RCTL_SZ_4096
;
2313 rctl
|= E1000_RCTL_BSEX
;
2314 switch (adapter
->rx_buffer_len
) {
2316 rctl
|= E1000_RCTL_SZ_256
;
2317 rctl
&= ~E1000_RCTL_BSEX
;
2320 rctl
|= E1000_RCTL_SZ_512
;
2321 rctl
&= ~E1000_RCTL_BSEX
;
2324 rctl
|= E1000_RCTL_SZ_1024
;
2325 rctl
&= ~E1000_RCTL_BSEX
;
2329 rctl
|= E1000_RCTL_SZ_2048
;
2330 rctl
&= ~E1000_RCTL_BSEX
;
2333 rctl
|= E1000_RCTL_SZ_4096
;
2336 rctl
|= E1000_RCTL_SZ_8192
;
2339 rctl
|= E1000_RCTL_SZ_16384
;
2344 * 82571 and greater support packet-split where the protocol
2345 * header is placed in skb->data and the packet data is
2346 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2347 * In the case of a non-split, skb->data is linearly filled,
2348 * followed by the page buffers. Therefore, skb->data is
2349 * sized to hold the largest protocol header.
2351 * allocations using alloc_page take too long for regular MTU
2352 * so only enable packet split for jumbo frames
2354 * Using pages when the page size is greater than 16k wastes
2355 * a lot of memory, since we allocate 3 pages at all times
2358 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2359 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2360 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2361 adapter
->rx_ps_pages
= pages
;
2363 adapter
->rx_ps_pages
= 0;
2365 if (adapter
->rx_ps_pages
) {
2366 /* Configure extra packet-split registers */
2367 rfctl
= er32(RFCTL
);
2368 rfctl
|= E1000_RFCTL_EXTEN
;
2370 * disable packet split support for IPv6 extension headers,
2371 * because some malformed IPv6 headers can hang the Rx
2373 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2374 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2378 /* Enable Packet split descriptors */
2379 rctl
|= E1000_RCTL_DTYP_PS
;
2381 psrctl
|= adapter
->rx_ps_bsize0
>>
2382 E1000_PSRCTL_BSIZE0_SHIFT
;
2384 switch (adapter
->rx_ps_pages
) {
2386 psrctl
|= PAGE_SIZE
<<
2387 E1000_PSRCTL_BSIZE3_SHIFT
;
2389 psrctl
|= PAGE_SIZE
<<
2390 E1000_PSRCTL_BSIZE2_SHIFT
;
2392 psrctl
|= PAGE_SIZE
>>
2393 E1000_PSRCTL_BSIZE1_SHIFT
;
2397 ew32(PSRCTL
, psrctl
);
2401 /* just started the receive unit, no need to restart */
2402 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2406 * e1000_configure_rx - Configure Receive Unit after Reset
2407 * @adapter: board private structure
2409 * Configure the Rx unit of the MAC after a reset.
2411 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2413 struct e1000_hw
*hw
= &adapter
->hw
;
2414 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2416 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2418 if (adapter
->rx_ps_pages
) {
2419 /* this is a 32 byte descriptor */
2420 rdlen
= rx_ring
->count
*
2421 sizeof(union e1000_rx_desc_packet_split
);
2422 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2423 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2424 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2425 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2426 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2427 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2429 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2430 adapter
->clean_rx
= e1000_clean_rx_irq
;
2431 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2434 /* disable receives while setting up the descriptors */
2436 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2440 /* set the Receive Delay Timer Register */
2441 ew32(RDTR
, adapter
->rx_int_delay
);
2443 /* irq moderation */
2444 ew32(RADV
, adapter
->rx_abs_int_delay
);
2445 if (adapter
->itr_setting
!= 0)
2446 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2448 ctrl_ext
= er32(CTRL_EXT
);
2449 /* Reset delay timers after every interrupt */
2450 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2451 /* Auto-Mask interrupts upon ICR access */
2452 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2453 ew32(IAM
, 0xffffffff);
2454 ew32(CTRL_EXT
, ctrl_ext
);
2458 * Setup the HW Rx Head and Tail Descriptor Pointers and
2459 * the Base and Length of the Rx Descriptor Ring
2461 rdba
= rx_ring
->dma
;
2462 ew32(RDBAL
, (rdba
& DMA_BIT_MASK(32)));
2463 ew32(RDBAH
, (rdba
>> 32));
2467 rx_ring
->head
= E1000_RDH
;
2468 rx_ring
->tail
= E1000_RDT
;
2470 /* Enable Receive Checksum Offload for TCP and UDP */
2471 rxcsum
= er32(RXCSUM
);
2472 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2473 rxcsum
|= E1000_RXCSUM_TUOFL
;
2476 * IPv4 payload checksum for UDP fragments must be
2477 * used in conjunction with packet-split.
2479 if (adapter
->rx_ps_pages
)
2480 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2482 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2483 /* no need to clear IPPCSE as it defaults to 0 */
2485 ew32(RXCSUM
, rxcsum
);
2488 * Enable early receives on supported devices, only takes effect when
2489 * packet size is equal or larger than the specified value (in 8 byte
2490 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2492 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2493 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2494 u32 rxdctl
= er32(RXDCTL(0));
2495 ew32(RXDCTL(0), rxdctl
| 0x3);
2496 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2498 * With jumbo frames and early-receive enabled, excessive
2499 * C4->C2 latencies result in dropped transactions.
2501 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2502 e1000e_driver_name
, 55);
2504 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2506 PM_QOS_DEFAULT_VALUE
);
2509 /* Enable Receives */
2514 * e1000_update_mc_addr_list - Update Multicast addresses
2515 * @hw: pointer to the HW structure
2516 * @mc_addr_list: array of multicast addresses to program
2517 * @mc_addr_count: number of multicast addresses to program
2518 * @rar_used_count: the first RAR register free to program
2519 * @rar_count: total number of supported Receive Address Registers
2521 * Updates the Receive Address Registers and Multicast Table Array.
2522 * The caller must have a packed mc_addr_list of multicast addresses.
2523 * The parameter rar_count will usually be hw->mac.rar_entry_count
2524 * unless there are workarounds that change this. Currently no func pointer
2525 * exists and all implementations are handled in the generic version of this
2528 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2529 u32 mc_addr_count
, u32 rar_used_count
,
2532 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2533 rar_used_count
, rar_count
);
2537 * e1000_set_multi - Multicast and Promiscuous mode set
2538 * @netdev: network interface device structure
2540 * The set_multi entry point is called whenever the multicast address
2541 * list or the network interface flags are updated. This routine is
2542 * responsible for configuring the hardware for proper multicast,
2543 * promiscuous mode, and all-multi behavior.
2545 static void e1000_set_multi(struct net_device
*netdev
)
2547 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2548 struct e1000_hw
*hw
= &adapter
->hw
;
2549 struct e1000_mac_info
*mac
= &hw
->mac
;
2550 struct dev_mc_list
*mc_ptr
;
2555 /* Check for Promiscuous and All Multicast modes */
2559 if (netdev
->flags
& IFF_PROMISC
) {
2560 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2561 rctl
&= ~E1000_RCTL_VFE
;
2563 if (netdev
->flags
& IFF_ALLMULTI
) {
2564 rctl
|= E1000_RCTL_MPE
;
2565 rctl
&= ~E1000_RCTL_UPE
;
2567 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2569 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2570 rctl
|= E1000_RCTL_VFE
;
2575 if (netdev
->mc_count
) {
2576 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2580 /* prepare a packed array of only addresses. */
2581 mc_ptr
= netdev
->mc_list
;
2583 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2586 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2588 mc_ptr
= mc_ptr
->next
;
2591 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2592 mac
->rar_entry_count
);
2596 * if we're called from probe, we might not have
2597 * anything to do here, so clear out the list
2599 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2604 * e1000_configure - configure the hardware for Rx and Tx
2605 * @adapter: private board structure
2607 static void e1000_configure(struct e1000_adapter
*adapter
)
2609 e1000_set_multi(adapter
->netdev
);
2611 e1000_restore_vlan(adapter
);
2612 e1000_init_manageability(adapter
);
2614 e1000_configure_tx(adapter
);
2615 e1000_setup_rctl(adapter
);
2616 e1000_configure_rx(adapter
);
2617 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2621 * e1000e_power_up_phy - restore link in case the phy was powered down
2622 * @adapter: address of board private structure
2624 * The phy may be powered down to save power and turn off link when the
2625 * driver is unloaded and wake on lan is not enabled (among others)
2626 * *** this routine MUST be followed by a call to e1000e_reset ***
2628 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2632 /* Just clear the power down bit to wake the phy back up */
2633 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2635 * According to the manual, the phy will retain its
2636 * settings across a power-down/up cycle
2638 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2639 mii_reg
&= ~MII_CR_POWER_DOWN
;
2640 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2643 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2647 * e1000_power_down_phy - Power down the PHY
2649 * Power down the PHY so no link is implied when interface is down
2650 * The PHY cannot be powered down is management or WoL is active
2652 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2654 struct e1000_hw
*hw
= &adapter
->hw
;
2657 /* WoL is enabled */
2661 /* non-copper PHY? */
2662 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2665 /* reset is blocked because of a SoL/IDER session */
2666 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2669 /* manageability (AMT) is enabled */
2670 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2673 /* power down the PHY */
2674 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2675 mii_reg
|= MII_CR_POWER_DOWN
;
2676 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2681 * e1000e_reset - bring the hardware into a known good state
2683 * This function boots the hardware and enables some settings that
2684 * require a configuration cycle of the hardware - those cannot be
2685 * set/changed during runtime. After reset the device needs to be
2686 * properly configured for Rx, Tx etc.
2688 void e1000e_reset(struct e1000_adapter
*adapter
)
2690 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2691 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2692 struct e1000_hw
*hw
= &adapter
->hw
;
2693 u32 tx_space
, min_tx_space
, min_rx_space
;
2694 u32 pba
= adapter
->pba
;
2697 /* reset Packet Buffer Allocation to default */
2700 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2702 * To maintain wire speed transmits, the Tx FIFO should be
2703 * large enough to accommodate two full transmit packets,
2704 * rounded up to the next 1KB and expressed in KB. Likewise,
2705 * the Rx FIFO should be large enough to accommodate at least
2706 * one full receive packet and is similarly rounded up and
2710 /* upper 16 bits has Tx packet buffer allocation size in KB */
2711 tx_space
= pba
>> 16;
2712 /* lower 16 bits has Rx packet buffer allocation size in KB */
2715 * the Tx fifo also stores 16 bytes of information about the tx
2716 * but don't include ethernet FCS because hardware appends it
2718 min_tx_space
= (adapter
->max_frame_size
+
2719 sizeof(struct e1000_tx_desc
) -
2721 min_tx_space
= ALIGN(min_tx_space
, 1024);
2722 min_tx_space
>>= 10;
2723 /* software strips receive CRC, so leave room for it */
2724 min_rx_space
= adapter
->max_frame_size
;
2725 min_rx_space
= ALIGN(min_rx_space
, 1024);
2726 min_rx_space
>>= 10;
2729 * If current Tx allocation is less than the min Tx FIFO size,
2730 * and the min Tx FIFO size is less than the current Rx FIFO
2731 * allocation, take space away from current Rx allocation
2733 if ((tx_space
< min_tx_space
) &&
2734 ((min_tx_space
- tx_space
) < pba
)) {
2735 pba
-= min_tx_space
- tx_space
;
2738 * if short on Rx space, Rx wins and must trump tx
2739 * adjustment or use Early Receive if available
2741 if ((pba
< min_rx_space
) &&
2742 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2743 /* ERT enabled in e1000_configure_rx */
2752 * flow control settings
2754 * The high water mark must be low enough to fit one full frame
2755 * (or the size used for early receive) above it in the Rx FIFO.
2756 * Set it to the lower of:
2757 * - 90% of the Rx FIFO size, and
2758 * - the full Rx FIFO size minus the early receive size (for parts
2759 * with ERT support assuming ERT set to E1000_ERT_2048), or
2760 * - the full Rx FIFO size minus one full frame
2762 if (adapter
->flags
& FLAG_HAS_ERT
)
2763 hwm
= min(((pba
<< 10) * 9 / 10),
2764 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2766 hwm
= min(((pba
<< 10) * 9 / 10),
2767 ((pba
<< 10) - adapter
->max_frame_size
));
2769 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2770 fc
->low_water
= fc
->high_water
- 8;
2772 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2773 fc
->pause_time
= 0xFFFF;
2775 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2777 fc
->current_mode
= fc
->requested_mode
;
2779 /* Allow time for pending master requests to run */
2780 mac
->ops
.reset_hw(hw
);
2783 * For parts with AMT enabled, let the firmware know
2784 * that the network interface is in control
2786 if (adapter
->flags
& FLAG_HAS_AMT
)
2787 e1000_get_hw_control(adapter
);
2791 if (mac
->ops
.init_hw(hw
))
2792 e_err("Hardware Error\n");
2794 e1000_update_mng_vlan(adapter
);
2796 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2797 ew32(VET
, ETH_P_8021Q
);
2799 e1000e_reset_adaptive(hw
);
2800 e1000_get_phy_info(hw
);
2802 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2805 * speed up time to link by disabling smart power down, ignore
2806 * the return value of this function because there is nothing
2807 * different we would do if it failed
2809 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2810 phy_data
&= ~IGP02E1000_PM_SPD
;
2811 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2815 int e1000e_up(struct e1000_adapter
*adapter
)
2817 struct e1000_hw
*hw
= &adapter
->hw
;
2819 /* hardware has been reset, we need to reload some things */
2820 e1000_configure(adapter
);
2822 clear_bit(__E1000_DOWN
, &adapter
->state
);
2824 napi_enable(&adapter
->napi
);
2825 if (adapter
->msix_entries
)
2826 e1000_configure_msix(adapter
);
2827 e1000_irq_enable(adapter
);
2829 /* fire a link change interrupt to start the watchdog */
2830 ew32(ICS
, E1000_ICS_LSC
);
2834 void e1000e_down(struct e1000_adapter
*adapter
)
2836 struct net_device
*netdev
= adapter
->netdev
;
2837 struct e1000_hw
*hw
= &adapter
->hw
;
2841 * signal that we're down so the interrupt handler does not
2842 * reschedule our watchdog timer
2844 set_bit(__E1000_DOWN
, &adapter
->state
);
2846 /* disable receives in the hardware */
2848 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2849 /* flush and sleep below */
2851 netif_tx_stop_all_queues(netdev
);
2853 /* disable transmits in the hardware */
2855 tctl
&= ~E1000_TCTL_EN
;
2857 /* flush both disables and wait for them to finish */
2861 napi_disable(&adapter
->napi
);
2862 e1000_irq_disable(adapter
);
2864 del_timer_sync(&adapter
->watchdog_timer
);
2865 del_timer_sync(&adapter
->phy_info_timer
);
2867 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2868 netif_carrier_off(netdev
);
2869 adapter
->link_speed
= 0;
2870 adapter
->link_duplex
= 0;
2872 if (!pci_channel_offline(adapter
->pdev
))
2873 e1000e_reset(adapter
);
2874 e1000_clean_tx_ring(adapter
);
2875 e1000_clean_rx_ring(adapter
);
2878 * TODO: for power management, we could drop the link and
2879 * pci_disable_device here.
2883 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2886 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2888 e1000e_down(adapter
);
2890 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2894 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2895 * @adapter: board private structure to initialize
2897 * e1000_sw_init initializes the Adapter private data structure.
2898 * Fields are initialized based on PCI device information and
2899 * OS network device settings (MTU size).
2901 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2903 struct net_device
*netdev
= adapter
->netdev
;
2905 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2906 adapter
->rx_ps_bsize0
= 128;
2907 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2908 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2910 e1000e_set_interrupt_capability(adapter
);
2912 if (e1000_alloc_queues(adapter
))
2915 /* Explicitly disable IRQ since the NIC can be in any state. */
2916 e1000_irq_disable(adapter
);
2918 set_bit(__E1000_DOWN
, &adapter
->state
);
2923 * e1000_intr_msi_test - Interrupt Handler
2924 * @irq: interrupt number
2925 * @data: pointer to a network interface device structure
2927 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
2929 struct net_device
*netdev
= data
;
2930 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2931 struct e1000_hw
*hw
= &adapter
->hw
;
2932 u32 icr
= er32(ICR
);
2934 e_dbg("%s: icr is %08X\n", netdev
->name
, icr
);
2935 if (icr
& E1000_ICR_RXSEQ
) {
2936 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
2944 * e1000_test_msi_interrupt - Returns 0 for successful test
2945 * @adapter: board private struct
2947 * code flow taken from tg3.c
2949 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
2951 struct net_device
*netdev
= adapter
->netdev
;
2952 struct e1000_hw
*hw
= &adapter
->hw
;
2955 /* poll_enable hasn't been called yet, so don't need disable */
2956 /* clear any pending events */
2959 /* free the real vector and request a test handler */
2960 e1000_free_irq(adapter
);
2961 e1000e_reset_interrupt_capability(adapter
);
2963 /* Assume that the test fails, if it succeeds then the test
2964 * MSI irq handler will unset this flag */
2965 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
2967 err
= pci_enable_msi(adapter
->pdev
);
2969 goto msi_test_failed
;
2971 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi_test
, 0,
2972 netdev
->name
, netdev
);
2974 pci_disable_msi(adapter
->pdev
);
2975 goto msi_test_failed
;
2980 e1000_irq_enable(adapter
);
2982 /* fire an unusual interrupt on the test handler */
2983 ew32(ICS
, E1000_ICS_RXSEQ
);
2987 e1000_irq_disable(adapter
);
2991 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
2992 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2994 e_info("MSI interrupt test failed!\n");
2997 free_irq(adapter
->pdev
->irq
, netdev
);
2998 pci_disable_msi(adapter
->pdev
);
3001 goto msi_test_failed
;
3003 /* okay so the test worked, restore settings */
3004 e_dbg("%s: MSI interrupt test succeeded!\n", netdev
->name
);
3006 e1000e_set_interrupt_capability(adapter
);
3007 e1000_request_irq(adapter
);
3012 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3013 * @adapter: board private struct
3015 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3017 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3022 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3025 /* disable SERR in case the MSI write causes a master abort */
3026 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3027 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3028 pci_cmd
& ~PCI_COMMAND_SERR
);
3030 err
= e1000_test_msi_interrupt(adapter
);
3032 /* restore previous setting of command word */
3033 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3039 /* EIO means MSI test failed */
3043 /* back to INTx mode */
3044 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3046 e1000_free_irq(adapter
);
3048 err
= e1000_request_irq(adapter
);
3054 * e1000_open - Called when a network interface is made active
3055 * @netdev: network interface device structure
3057 * Returns 0 on success, negative value on failure
3059 * The open entry point is called when a network interface is made
3060 * active by the system (IFF_UP). At this point all resources needed
3061 * for transmit and receive operations are allocated, the interrupt
3062 * handler is registered with the OS, the watchdog timer is started,
3063 * and the stack is notified that the interface is ready.
3065 static int e1000_open(struct net_device
*netdev
)
3067 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3068 struct e1000_hw
*hw
= &adapter
->hw
;
3071 /* disallow open during test */
3072 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3075 /* allocate transmit descriptors */
3076 err
= e1000e_setup_tx_resources(adapter
);
3080 /* allocate receive descriptors */
3081 err
= e1000e_setup_rx_resources(adapter
);
3085 e1000e_power_up_phy(adapter
);
3087 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3088 if ((adapter
->hw
.mng_cookie
.status
&
3089 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3090 e1000_update_mng_vlan(adapter
);
3093 * If AMT is enabled, let the firmware know that the network
3094 * interface is now open
3096 if (adapter
->flags
& FLAG_HAS_AMT
)
3097 e1000_get_hw_control(adapter
);
3100 * before we allocate an interrupt, we must be ready to handle it.
3101 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3102 * as soon as we call pci_request_irq, so we have to setup our
3103 * clean_rx handler before we do so.
3105 e1000_configure(adapter
);
3107 err
= e1000_request_irq(adapter
);
3112 * Work around PCIe errata with MSI interrupts causing some chipsets to
3113 * ignore e1000e MSI messages, which means we need to test our MSI
3116 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3117 err
= e1000_test_msi(adapter
);
3119 e_err("Interrupt allocation failed\n");
3124 /* From here on the code is the same as e1000e_up() */
3125 clear_bit(__E1000_DOWN
, &adapter
->state
);
3127 napi_enable(&adapter
->napi
);
3129 e1000_irq_enable(adapter
);
3131 netif_tx_start_all_queues(netdev
);
3133 /* fire a link status change interrupt to start the watchdog */
3134 ew32(ICS
, E1000_ICS_LSC
);
3139 e1000_release_hw_control(adapter
);
3140 e1000_power_down_phy(adapter
);
3141 e1000e_free_rx_resources(adapter
);
3143 e1000e_free_tx_resources(adapter
);
3145 e1000e_reset(adapter
);
3151 * e1000_close - Disables a network interface
3152 * @netdev: network interface device structure
3154 * Returns 0, this is not allowed to fail
3156 * The close entry point is called when an interface is de-activated
3157 * by the OS. The hardware is still under the drivers control, but
3158 * needs to be disabled. A global MAC reset is issued to stop the
3159 * hardware, and all transmit and receive resources are freed.
3161 static int e1000_close(struct net_device
*netdev
)
3163 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3165 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3166 e1000e_down(adapter
);
3167 e1000_power_down_phy(adapter
);
3168 e1000_free_irq(adapter
);
3170 e1000e_free_tx_resources(adapter
);
3171 e1000e_free_rx_resources(adapter
);
3174 * kill manageability vlan ID if supported, but not if a vlan with
3175 * the same ID is registered on the host OS (let 8021q kill it)
3177 if ((adapter
->hw
.mng_cookie
.status
&
3178 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3180 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3181 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3184 * If AMT is enabled, let the firmware know that the network
3185 * interface is now closed
3187 if (adapter
->flags
& FLAG_HAS_AMT
)
3188 e1000_release_hw_control(adapter
);
3193 * e1000_set_mac - Change the Ethernet Address of the NIC
3194 * @netdev: network interface device structure
3195 * @p: pointer to an address structure
3197 * Returns 0 on success, negative on failure
3199 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3201 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3202 struct sockaddr
*addr
= p
;
3204 if (!is_valid_ether_addr(addr
->sa_data
))
3205 return -EADDRNOTAVAIL
;
3207 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3208 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3210 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3212 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3213 /* activate the work around */
3214 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3217 * Hold a copy of the LAA in RAR[14] This is done so that
3218 * between the time RAR[0] gets clobbered and the time it
3219 * gets fixed (in e1000_watchdog), the actual LAA is in one
3220 * of the RARs and no incoming packets directed to this port
3221 * are dropped. Eventually the LAA will be in RAR[0] and
3224 e1000e_rar_set(&adapter
->hw
,
3225 adapter
->hw
.mac
.addr
,
3226 adapter
->hw
.mac
.rar_entry_count
- 1);
3233 * e1000e_update_phy_task - work thread to update phy
3234 * @work: pointer to our work struct
3236 * this worker thread exists because we must acquire a
3237 * semaphore to read the phy, which we could msleep while
3238 * waiting for it, and we can't msleep in a timer.
3240 static void e1000e_update_phy_task(struct work_struct
*work
)
3242 struct e1000_adapter
*adapter
= container_of(work
,
3243 struct e1000_adapter
, update_phy_task
);
3244 e1000_get_phy_info(&adapter
->hw
);
3248 * Need to wait a few seconds after link up to get diagnostic information from
3251 static void e1000_update_phy_info(unsigned long data
)
3253 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3254 schedule_work(&adapter
->update_phy_task
);
3258 * e1000e_update_stats - Update the board statistics counters
3259 * @adapter: board private structure
3261 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3263 struct e1000_hw
*hw
= &adapter
->hw
;
3264 struct pci_dev
*pdev
= adapter
->pdev
;
3267 * Prevent stats update while adapter is being reset, or if the pci
3268 * connection is down.
3270 if (adapter
->link_speed
== 0)
3272 if (pci_channel_offline(pdev
))
3275 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3276 adapter
->stats
.gprc
+= er32(GPRC
);
3277 adapter
->stats
.gorc
+= er32(GORCL
);
3278 er32(GORCH
); /* Clear gorc */
3279 adapter
->stats
.bprc
+= er32(BPRC
);
3280 adapter
->stats
.mprc
+= er32(MPRC
);
3281 adapter
->stats
.roc
+= er32(ROC
);
3283 adapter
->stats
.mpc
+= er32(MPC
);
3284 adapter
->stats
.scc
+= er32(SCC
);
3285 adapter
->stats
.ecol
+= er32(ECOL
);
3286 adapter
->stats
.mcc
+= er32(MCC
);
3287 adapter
->stats
.latecol
+= er32(LATECOL
);
3288 adapter
->stats
.dc
+= er32(DC
);
3289 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3290 adapter
->stats
.xontxc
+= er32(XONTXC
);
3291 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3292 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3293 adapter
->stats
.gptc
+= er32(GPTC
);
3294 adapter
->stats
.gotc
+= er32(GOTCL
);
3295 er32(GOTCH
); /* Clear gotc */
3296 adapter
->stats
.rnbc
+= er32(RNBC
);
3297 adapter
->stats
.ruc
+= er32(RUC
);
3299 adapter
->stats
.mptc
+= er32(MPTC
);
3300 adapter
->stats
.bptc
+= er32(BPTC
);
3302 /* used for adaptive IFS */
3304 hw
->mac
.tx_packet_delta
= er32(TPT
);
3305 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3306 hw
->mac
.collision_delta
= er32(COLC
);
3307 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3309 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3310 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3311 if ((hw
->mac
.type
!= e1000_82574
) && (hw
->mac
.type
!= e1000_82583
))
3312 adapter
->stats
.tncrs
+= er32(TNCRS
);
3313 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3314 adapter
->stats
.tsctc
+= er32(TSCTC
);
3315 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3317 /* Fill out the OS statistics structure */
3318 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3319 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3324 * RLEC on some newer hardware can be incorrect so build
3325 * our own version based on RUC and ROC
3327 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3328 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3329 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3330 adapter
->stats
.cexterr
;
3331 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3333 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3334 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3335 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3338 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3339 adapter
->stats
.latecol
;
3340 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3341 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3342 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3344 /* Tx Dropped needs to be maintained elsewhere */
3346 /* Management Stats */
3347 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3348 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3349 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3353 * e1000_phy_read_status - Update the PHY register status snapshot
3354 * @adapter: board private structure
3356 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3358 struct e1000_hw
*hw
= &adapter
->hw
;
3359 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3362 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3363 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3364 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3365 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3366 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3367 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3368 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3369 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3370 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3371 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3373 e_warn("Error reading PHY register\n");
3376 * Do not read PHY registers if link is not up
3377 * Set values to typical power-on defaults
3379 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3380 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3381 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3383 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3384 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3386 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3387 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3389 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3393 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3395 struct e1000_hw
*hw
= &adapter
->hw
;
3396 u32 ctrl
= er32(CTRL
);
3398 /* Link status message must follow this format for user tools */
3399 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
3400 "Flow Control: %s\n",
3401 adapter
->netdev
->name
,
3402 adapter
->link_speed
,
3403 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3404 "Full Duplex" : "Half Duplex",
3405 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3407 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3408 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3411 bool e1000_has_link(struct e1000_adapter
*adapter
)
3413 struct e1000_hw
*hw
= &adapter
->hw
;
3414 bool link_active
= 0;
3418 * get_link_status is set on LSC (link status) interrupt or
3419 * Rx sequence error interrupt. get_link_status will stay
3420 * false until the check_for_link establishes link
3421 * for copper adapters ONLY
3423 switch (hw
->phy
.media_type
) {
3424 case e1000_media_type_copper
:
3425 if (hw
->mac
.get_link_status
) {
3426 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3427 link_active
= !hw
->mac
.get_link_status
;
3432 case e1000_media_type_fiber
:
3433 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3434 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
3436 case e1000_media_type_internal_serdes
:
3437 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3438 link_active
= adapter
->hw
.mac
.serdes_has_link
;
3441 case e1000_media_type_unknown
:
3445 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
3446 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
3447 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3448 e_info("Gigabit has been disabled, downgrading speed\n");
3454 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3456 /* make sure the receive unit is started */
3457 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3458 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3459 struct e1000_hw
*hw
= &adapter
->hw
;
3460 u32 rctl
= er32(RCTL
);
3461 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3462 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3467 * e1000_watchdog - Timer Call-back
3468 * @data: pointer to adapter cast into an unsigned long
3470 static void e1000_watchdog(unsigned long data
)
3472 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3474 /* Do the rest outside of interrupt context */
3475 schedule_work(&adapter
->watchdog_task
);
3477 /* TODO: make this use queue_delayed_work() */
3480 static void e1000_watchdog_task(struct work_struct
*work
)
3482 struct e1000_adapter
*adapter
= container_of(work
,
3483 struct e1000_adapter
, watchdog_task
);
3484 struct net_device
*netdev
= adapter
->netdev
;
3485 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3486 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
3487 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3488 struct e1000_hw
*hw
= &adapter
->hw
;
3492 link
= e1000_has_link(adapter
);
3493 if ((netif_carrier_ok(netdev
)) && link
) {
3494 e1000e_enable_receives(adapter
);
3498 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3499 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3500 e1000_update_mng_vlan(adapter
);
3503 if (!netif_carrier_ok(netdev
)) {
3505 /* update snapshot of PHY registers on LSC */
3506 e1000_phy_read_status(adapter
);
3507 mac
->ops
.get_link_up_info(&adapter
->hw
,
3508 &adapter
->link_speed
,
3509 &adapter
->link_duplex
);
3510 e1000_print_link_info(adapter
);
3512 * On supported PHYs, check for duplex mismatch only
3513 * if link has autonegotiated at 10/100 half
3515 if ((hw
->phy
.type
== e1000_phy_igp_3
||
3516 hw
->phy
.type
== e1000_phy_bm
) &&
3517 (hw
->mac
.autoneg
== true) &&
3518 (adapter
->link_speed
== SPEED_10
||
3519 adapter
->link_speed
== SPEED_100
) &&
3520 (adapter
->link_duplex
== HALF_DUPLEX
)) {
3523 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
3525 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
3526 e_info("Autonegotiated half duplex but"
3527 " link partner cannot autoneg. "
3528 " Try forcing full duplex if "
3529 "link gets many collisions.\n");
3533 * tweak tx_queue_len according to speed/duplex
3534 * and adjust the timeout factor
3536 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3537 adapter
->tx_timeout_factor
= 1;
3538 switch (adapter
->link_speed
) {
3541 netdev
->tx_queue_len
= 10;
3542 adapter
->tx_timeout_factor
= 16;
3546 netdev
->tx_queue_len
= 100;
3547 /* maybe add some timeout factor ? */
3552 * workaround: re-program speed mode bit after
3555 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3558 tarc0
= er32(TARC(0));
3559 tarc0
&= ~SPEED_MODE_BIT
;
3560 ew32(TARC(0), tarc0
);
3564 * disable TSO for pcie and 10/100 speeds, to avoid
3565 * some hardware issues
3567 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3568 switch (adapter
->link_speed
) {
3571 e_info("10/100 speed: disabling TSO\n");
3572 netdev
->features
&= ~NETIF_F_TSO
;
3573 netdev
->features
&= ~NETIF_F_TSO6
;
3576 netdev
->features
|= NETIF_F_TSO
;
3577 netdev
->features
|= NETIF_F_TSO6
;
3586 * enable transmits in the hardware, need to do this
3587 * after setting TARC(0)
3590 tctl
|= E1000_TCTL_EN
;
3594 * Perform any post-link-up configuration before
3595 * reporting link up.
3597 if (phy
->ops
.cfg_on_link_up
)
3598 phy
->ops
.cfg_on_link_up(hw
);
3600 netif_carrier_on(netdev
);
3601 netif_tx_wake_all_queues(netdev
);
3603 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3604 mod_timer(&adapter
->phy_info_timer
,
3605 round_jiffies(jiffies
+ 2 * HZ
));
3608 if (netif_carrier_ok(netdev
)) {
3609 adapter
->link_speed
= 0;
3610 adapter
->link_duplex
= 0;
3611 /* Link status message must follow this format */
3612 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
3613 adapter
->netdev
->name
);
3614 netif_carrier_off(netdev
);
3615 netif_tx_stop_all_queues(netdev
);
3616 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3617 mod_timer(&adapter
->phy_info_timer
,
3618 round_jiffies(jiffies
+ 2 * HZ
));
3620 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3621 schedule_work(&adapter
->reset_task
);
3626 e1000e_update_stats(adapter
);
3628 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3629 adapter
->tpt_old
= adapter
->stats
.tpt
;
3630 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3631 adapter
->colc_old
= adapter
->stats
.colc
;
3633 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3634 adapter
->gorc_old
= adapter
->stats
.gorc
;
3635 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3636 adapter
->gotc_old
= adapter
->stats
.gotc
;
3638 e1000e_update_adaptive(&adapter
->hw
);
3640 if (!netif_carrier_ok(netdev
)) {
3641 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3645 * We've lost link, so the controller stops DMA,
3646 * but we've got queued Tx work that's never going
3647 * to get done, so reset controller to flush Tx.
3648 * (Do the reset outside of interrupt context).
3650 adapter
->tx_timeout_count
++;
3651 schedule_work(&adapter
->reset_task
);
3655 /* Cause software interrupt to ensure Rx ring is cleaned */
3656 if (adapter
->msix_entries
)
3657 ew32(ICS
, adapter
->rx_ring
->ims_val
);
3659 ew32(ICS
, E1000_ICS_RXDMT0
);
3661 /* Force detection of hung controller every watchdog period */
3662 adapter
->detect_tx_hung
= 1;
3665 * With 82571 controllers, LAA may be overwritten due to controller
3666 * reset from the other port. Set the appropriate LAA in RAR[0]
3668 if (e1000e_get_laa_state_82571(hw
))
3669 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3671 /* Reset the timer */
3672 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3673 mod_timer(&adapter
->watchdog_timer
,
3674 round_jiffies(jiffies
+ 2 * HZ
));
3677 #define E1000_TX_FLAGS_CSUM 0x00000001
3678 #define E1000_TX_FLAGS_VLAN 0x00000002
3679 #define E1000_TX_FLAGS_TSO 0x00000004
3680 #define E1000_TX_FLAGS_IPV4 0x00000008
3681 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3682 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3684 static int e1000_tso(struct e1000_adapter
*adapter
,
3685 struct sk_buff
*skb
)
3687 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3688 struct e1000_context_desc
*context_desc
;
3689 struct e1000_buffer
*buffer_info
;
3692 u16 ipcse
= 0, tucse
, mss
;
3693 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3696 if (skb_is_gso(skb
)) {
3697 if (skb_header_cloned(skb
)) {
3698 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3703 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3704 mss
= skb_shinfo(skb
)->gso_size
;
3705 if (skb
->protocol
== htons(ETH_P_IP
)) {
3706 struct iphdr
*iph
= ip_hdr(skb
);
3709 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3713 cmd_length
= E1000_TXD_CMD_IP
;
3714 ipcse
= skb_transport_offset(skb
) - 1;
3715 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3716 ipv6_hdr(skb
)->payload_len
= 0;
3717 tcp_hdr(skb
)->check
=
3718 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3719 &ipv6_hdr(skb
)->daddr
,
3723 ipcss
= skb_network_offset(skb
);
3724 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3725 tucss
= skb_transport_offset(skb
);
3726 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3729 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3730 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3732 i
= tx_ring
->next_to_use
;
3733 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3734 buffer_info
= &tx_ring
->buffer_info
[i
];
3736 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3737 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3738 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3739 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3740 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3741 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3742 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3743 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3744 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3746 buffer_info
->time_stamp
= jiffies
;
3747 buffer_info
->next_to_watch
= i
;
3750 if (i
== tx_ring
->count
)
3752 tx_ring
->next_to_use
= i
;
3760 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3762 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3763 struct e1000_context_desc
*context_desc
;
3764 struct e1000_buffer
*buffer_info
;
3767 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
3770 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
3773 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
3774 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
3776 protocol
= skb
->protocol
;
3779 case cpu_to_be16(ETH_P_IP
):
3780 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3781 cmd_len
|= E1000_TXD_CMD_TCP
;
3783 case cpu_to_be16(ETH_P_IPV6
):
3784 /* XXX not handling all IPV6 headers */
3785 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3786 cmd_len
|= E1000_TXD_CMD_TCP
;
3789 if (unlikely(net_ratelimit()))
3790 e_warn("checksum_partial proto=%x!\n",
3791 be16_to_cpu(protocol
));
3795 css
= skb_transport_offset(skb
);
3797 i
= tx_ring
->next_to_use
;
3798 buffer_info
= &tx_ring
->buffer_info
[i
];
3799 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3801 context_desc
->lower_setup
.ip_config
= 0;
3802 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3803 context_desc
->upper_setup
.tcp_fields
.tucso
=
3804 css
+ skb
->csum_offset
;
3805 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3806 context_desc
->tcp_seg_setup
.data
= 0;
3807 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
3809 buffer_info
->time_stamp
= jiffies
;
3810 buffer_info
->next_to_watch
= i
;
3813 if (i
== tx_ring
->count
)
3815 tx_ring
->next_to_use
= i
;
3820 #define E1000_MAX_PER_TXD 8192
3821 #define E1000_MAX_TXD_PWR 12
3823 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3824 struct sk_buff
*skb
, unsigned int first
,
3825 unsigned int max_per_txd
, unsigned int nr_frags
,
3828 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3829 struct e1000_buffer
*buffer_info
;
3830 unsigned int len
= skb_headlen(skb
);
3831 unsigned int offset
, size
, count
= 0, i
;
3835 i
= tx_ring
->next_to_use
;
3837 if (skb_dma_map(&adapter
->pdev
->dev
, skb
, DMA_TO_DEVICE
)) {
3838 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3839 adapter
->tx_dma_failed
++;
3843 map
= skb_shinfo(skb
)->dma_maps
;
3847 buffer_info
= &tx_ring
->buffer_info
[i
];
3848 size
= min(len
, max_per_txd
);
3850 buffer_info
->length
= size
;
3851 buffer_info
->time_stamp
= jiffies
;
3852 buffer_info
->next_to_watch
= i
;
3853 buffer_info
->dma
= map
[0] + offset
;
3861 if (i
== tx_ring
->count
)
3866 for (f
= 0; f
< nr_frags
; f
++) {
3867 struct skb_frag_struct
*frag
;
3869 frag
= &skb_shinfo(skb
)->frags
[f
];
3875 if (i
== tx_ring
->count
)
3878 buffer_info
= &tx_ring
->buffer_info
[i
];
3879 size
= min(len
, max_per_txd
);
3881 buffer_info
->length
= size
;
3882 buffer_info
->time_stamp
= jiffies
;
3883 buffer_info
->next_to_watch
= i
;
3884 buffer_info
->dma
= map
[f
+ 1] + offset
;
3892 tx_ring
->buffer_info
[i
].skb
= skb
;
3893 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3898 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3899 int tx_flags
, int count
)
3901 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3902 struct e1000_tx_desc
*tx_desc
= NULL
;
3903 struct e1000_buffer
*buffer_info
;
3904 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3907 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3908 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3910 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3912 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3913 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3916 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3917 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3918 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3921 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3922 txd_lower
|= E1000_TXD_CMD_VLE
;
3923 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3926 i
= tx_ring
->next_to_use
;
3929 buffer_info
= &tx_ring
->buffer_info
[i
];
3930 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3931 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3932 tx_desc
->lower
.data
=
3933 cpu_to_le32(txd_lower
| buffer_info
->length
);
3934 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3937 if (i
== tx_ring
->count
)
3941 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3944 * Force memory writes to complete before letting h/w
3945 * know there are new descriptors to fetch. (Only
3946 * applicable for weak-ordered memory model archs,
3951 tx_ring
->next_to_use
= i
;
3952 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3954 * we need this if more than one processor can write to our tail
3955 * at a time, it synchronizes IO on IA64/Altix systems
3960 #define MINIMUM_DHCP_PACKET_SIZE 282
3961 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3962 struct sk_buff
*skb
)
3964 struct e1000_hw
*hw
= &adapter
->hw
;
3967 if (vlan_tx_tag_present(skb
)) {
3968 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3969 && (adapter
->hw
.mng_cookie
.status
&
3970 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3974 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3977 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
3981 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
3984 if (ip
->protocol
!= IPPROTO_UDP
)
3987 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
3988 if (ntohs(udp
->dest
) != 67)
3991 offset
= (u8
*)udp
+ 8 - skb
->data
;
3992 length
= skb
->len
- offset
;
3993 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
3999 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4001 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4003 netif_stop_queue(netdev
);
4005 * Herbert's original patch had:
4006 * smp_mb__after_netif_stop_queue();
4007 * but since that doesn't exist yet, just open code it.
4012 * We need to check again in a case another CPU has just
4013 * made room available.
4015 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4019 netif_start_queue(netdev
);
4020 ++adapter
->restart_queue
;
4024 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4026 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4028 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4030 return __e1000_maybe_stop_tx(netdev
, size
);
4033 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4034 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
4036 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4037 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4039 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4040 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4041 unsigned int tx_flags
= 0;
4042 unsigned int len
= skb
->len
- skb
->data_len
;
4043 unsigned int nr_frags
;
4049 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4050 dev_kfree_skb_any(skb
);
4051 return NETDEV_TX_OK
;
4054 if (skb
->len
<= 0) {
4055 dev_kfree_skb_any(skb
);
4056 return NETDEV_TX_OK
;
4059 mss
= skb_shinfo(skb
)->gso_size
;
4061 * The controller does a simple calculation to
4062 * make sure there is enough room in the FIFO before
4063 * initiating the DMA for each buffer. The calc is:
4064 * 4 = ceil(buffer len/mss). To make sure we don't
4065 * overrun the FIFO, adjust the max buffer len if mss
4070 max_per_txd
= min(mss
<< 2, max_per_txd
);
4071 max_txd_pwr
= fls(max_per_txd
) - 1;
4074 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4075 * points to just header, pull a few bytes of payload from
4076 * frags into skb->data
4078 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4080 * we do this workaround for ES2LAN, but it is un-necessary,
4081 * avoiding it could save a lot of cycles
4083 if (skb
->data_len
&& (hdr_len
== len
)) {
4084 unsigned int pull_size
;
4086 pull_size
= min((unsigned int)4, skb
->data_len
);
4087 if (!__pskb_pull_tail(skb
, pull_size
)) {
4088 e_err("__pskb_pull_tail failed.\n");
4089 dev_kfree_skb_any(skb
);
4090 return NETDEV_TX_OK
;
4092 len
= skb
->len
- skb
->data_len
;
4096 /* reserve a descriptor for the offload context */
4097 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4101 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4103 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4104 for (f
= 0; f
< nr_frags
; f
++)
4105 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4108 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4109 e1000_transfer_dhcp_info(adapter
, skb
);
4112 * need: count + 2 desc gap to keep tail from touching
4113 * head, otherwise try next time
4115 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4116 return NETDEV_TX_BUSY
;
4118 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4119 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4120 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4123 first
= tx_ring
->next_to_use
;
4125 tso
= e1000_tso(adapter
, skb
);
4127 dev_kfree_skb_any(skb
);
4128 return NETDEV_TX_OK
;
4132 tx_flags
|= E1000_TX_FLAGS_TSO
;
4133 else if (e1000_tx_csum(adapter
, skb
))
4134 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4137 * Old method was to assume IPv4 packet by default if TSO was enabled.
4138 * 82571 hardware supports TSO capabilities for IPv6 as well...
4139 * no longer assume, we must.
4141 if (skb
->protocol
== htons(ETH_P_IP
))
4142 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4144 /* if count is 0 then mapping error has occured */
4145 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4147 e1000_tx_queue(adapter
, tx_flags
, count
);
4148 netdev
->trans_start
= jiffies
;
4149 /* Make sure there is space in the ring for the next send. */
4150 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4153 dev_kfree_skb_any(skb
);
4154 tx_ring
->buffer_info
[first
].time_stamp
= 0;
4155 tx_ring
->next_to_use
= first
;
4158 return NETDEV_TX_OK
;
4162 * e1000_tx_timeout - Respond to a Tx Hang
4163 * @netdev: network interface device structure
4165 static void e1000_tx_timeout(struct net_device
*netdev
)
4167 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4169 /* Do the reset outside of interrupt context */
4170 adapter
->tx_timeout_count
++;
4171 schedule_work(&adapter
->reset_task
);
4174 static void e1000_reset_task(struct work_struct
*work
)
4176 struct e1000_adapter
*adapter
;
4177 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4179 e1000e_reinit_locked(adapter
);
4183 * e1000_get_stats - Get System Network Statistics
4184 * @netdev: network interface device structure
4186 * Returns the address of the device statistics structure.
4187 * The statistics are actually updated from the timer callback.
4189 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4191 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4193 /* only return the current stats */
4194 return &adapter
->net_stats
;
4198 * e1000_change_mtu - Change the Maximum Transfer Unit
4199 * @netdev: network interface device structure
4200 * @new_mtu: new value for maximum frame size
4202 * Returns 0 on success, negative on failure
4204 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4206 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4207 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4209 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4210 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
4211 e_err("Invalid MTU setting\n");
4215 /* Jumbo frame size limits */
4216 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
4217 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4218 e_err("Jumbo Frames not supported.\n");
4221 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
4222 e_err("Jumbo Frames not supported.\n");
4227 #define MAX_STD_JUMBO_FRAME_SIZE 9234
4228 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
4229 e_err("MTU > 9216 not supported.\n");
4233 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4235 /* e1000e_down has a dependency on max_frame_size */
4236 adapter
->max_frame_size
= max_frame
;
4237 if (netif_running(netdev
))
4238 e1000e_down(adapter
);
4241 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4242 * means we reserve 2 more, this pushes us to allocate from the next
4244 * i.e. RXBUFFER_2048 --> size-4096 slab
4245 * However with the new *_jumbo_rx* routines, jumbo receives will use
4249 if (max_frame
<= 256)
4250 adapter
->rx_buffer_len
= 256;
4251 else if (max_frame
<= 512)
4252 adapter
->rx_buffer_len
= 512;
4253 else if (max_frame
<= 1024)
4254 adapter
->rx_buffer_len
= 1024;
4255 else if (max_frame
<= 2048)
4256 adapter
->rx_buffer_len
= 2048;
4258 adapter
->rx_buffer_len
= 4096;
4260 /* adjust allocation if LPE protects us, and we aren't using SBP */
4261 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4262 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4263 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4266 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4267 netdev
->mtu
= new_mtu
;
4269 if (netif_running(netdev
))
4272 e1000e_reset(adapter
);
4274 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4279 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4282 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4283 struct mii_ioctl_data
*data
= if_mii(ifr
);
4285 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4290 data
->phy_id
= adapter
->hw
.phy
.addr
;
4293 if (!capable(CAP_NET_ADMIN
))
4295 switch (data
->reg_num
& 0x1F) {
4297 data
->val_out
= adapter
->phy_regs
.bmcr
;
4300 data
->val_out
= adapter
->phy_regs
.bmsr
;
4303 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4306 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4309 data
->val_out
= adapter
->phy_regs
.advertise
;
4312 data
->val_out
= adapter
->phy_regs
.lpa
;
4315 data
->val_out
= adapter
->phy_regs
.expansion
;
4318 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4321 data
->val_out
= adapter
->phy_regs
.stat1000
;
4324 data
->val_out
= adapter
->phy_regs
.estatus
;
4337 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4343 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4349 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
4351 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4352 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4353 struct e1000_hw
*hw
= &adapter
->hw
;
4354 u32 ctrl
, ctrl_ext
, rctl
, status
;
4355 u32 wufc
= adapter
->wol
;
4358 netif_device_detach(netdev
);
4360 if (netif_running(netdev
)) {
4361 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4362 e1000e_down(adapter
);
4363 e1000_free_irq(adapter
);
4365 e1000e_reset_interrupt_capability(adapter
);
4367 retval
= pci_save_state(pdev
);
4371 status
= er32(STATUS
);
4372 if (status
& E1000_STATUS_LU
)
4373 wufc
&= ~E1000_WUFC_LNKC
;
4376 e1000_setup_rctl(adapter
);
4377 e1000_set_multi(netdev
);
4379 /* turn on all-multi mode if wake on multicast is enabled */
4380 if (wufc
& E1000_WUFC_MC
) {
4382 rctl
|= E1000_RCTL_MPE
;
4387 /* advertise wake from D3Cold */
4388 #define E1000_CTRL_ADVD3WUC 0x00100000
4389 /* phy power management enable */
4390 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4391 ctrl
|= E1000_CTRL_ADVD3WUC
|
4392 E1000_CTRL_EN_PHY_PWR_MGMT
;
4395 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
4396 adapter
->hw
.phy
.media_type
==
4397 e1000_media_type_internal_serdes
) {
4398 /* keep the laser running in D3 */
4399 ctrl_ext
= er32(CTRL_EXT
);
4400 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4401 ew32(CTRL_EXT
, ctrl_ext
);
4404 if (adapter
->flags
& FLAG_IS_ICH
)
4405 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
4407 /* Allow time for pending master requests to run */
4408 e1000e_disable_pcie_master(&adapter
->hw
);
4410 ew32(WUC
, E1000_WUC_PME_EN
);
4417 *enable_wake
= !!wufc
;
4419 /* make sure adapter isn't asleep if manageability is enabled */
4420 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
)
4421 *enable_wake
= true;
4423 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
4424 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
4427 * Release control of h/w to f/w. If f/w is AMT enabled, this
4428 * would have already happened in close and is redundant.
4430 e1000_release_hw_control(adapter
);
4432 pci_disable_device(pdev
);
4437 static void e1000_power_off(struct pci_dev
*pdev
, bool sleep
, bool wake
)
4439 if (sleep
&& wake
) {
4440 pci_prepare_to_sleep(pdev
);
4444 pci_wake_from_d3(pdev
, wake
);
4445 pci_set_power_state(pdev
, PCI_D3hot
);
4448 static void e1000_complete_shutdown(struct pci_dev
*pdev
, bool sleep
,
4451 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4452 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4455 * The pci-e switch on some quad port adapters will report a
4456 * correctable error when the MAC transitions from D0 to D3. To
4457 * prevent this we need to mask off the correctable errors on the
4458 * downstream port of the pci-e switch.
4460 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
4461 struct pci_dev
*us_dev
= pdev
->bus
->self
;
4462 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
4465 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
4466 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
4467 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
4469 e1000_power_off(pdev
, sleep
, wake
);
4471 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
4473 e1000_power_off(pdev
, sleep
, wake
);
4477 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
4483 * 82573 workaround - disable L1 ASPM on mobile chipsets
4485 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4486 * resulting in lost data or garbage information on the pci-e link
4487 * level. This could result in (false) bad EEPROM checksum errors,
4488 * long ping times (up to 2s) or even a system freeze/hang.
4490 * Unfortunately this feature saves about 1W power consumption when
4493 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
4494 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
4496 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
4498 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
4503 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4508 retval
= __e1000_shutdown(pdev
, &wake
);
4510 e1000_complete_shutdown(pdev
, true, wake
);
4515 static int e1000_resume(struct pci_dev
*pdev
)
4517 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4518 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4519 struct e1000_hw
*hw
= &adapter
->hw
;
4522 pci_set_power_state(pdev
, PCI_D0
);
4523 pci_restore_state(pdev
);
4524 e1000e_disable_l1aspm(pdev
);
4526 err
= pci_enable_device_mem(pdev
);
4529 "Cannot enable PCI device from suspend\n");
4533 /* AER (Advanced Error Reporting) hooks */
4534 err
= pci_enable_pcie_error_reporting(pdev
);
4536 dev_err(&pdev
->dev
, "pci_enable_pcie_error_reporting failed "
4538 /* non-fatal, continue */
4541 pci_set_master(pdev
);
4543 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4544 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4546 e1000e_set_interrupt_capability(adapter
);
4547 if (netif_running(netdev
)) {
4548 err
= e1000_request_irq(adapter
);
4553 e1000e_power_up_phy(adapter
);
4554 e1000e_reset(adapter
);
4557 e1000_init_manageability(adapter
);
4559 if (netif_running(netdev
))
4562 netif_device_attach(netdev
);
4565 * If the controller has AMT, do not set DRV_LOAD until the interface
4566 * is up. For all other cases, let the f/w know that the h/w is now
4567 * under the control of the driver.
4569 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4570 e1000_get_hw_control(adapter
);
4576 static void e1000_shutdown(struct pci_dev
*pdev
)
4580 __e1000_shutdown(pdev
, &wake
);
4582 if (system_state
== SYSTEM_POWER_OFF
)
4583 e1000_complete_shutdown(pdev
, false, wake
);
4586 #ifdef CONFIG_NET_POLL_CONTROLLER
4588 * Polling 'interrupt' - used by things like netconsole to send skbs
4589 * without having to re-enable interrupts. It's not called while
4590 * the interrupt routine is executing.
4592 static void e1000_netpoll(struct net_device
*netdev
)
4594 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4596 disable_irq(adapter
->pdev
->irq
);
4597 e1000_intr(adapter
->pdev
->irq
, netdev
);
4599 enable_irq(adapter
->pdev
->irq
);
4604 * e1000_io_error_detected - called when PCI error is detected
4605 * @pdev: Pointer to PCI device
4606 * @state: The current pci connection state
4608 * This function is called after a PCI bus error affecting
4609 * this device has been detected.
4611 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4612 pci_channel_state_t state
)
4614 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4615 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4617 netif_device_detach(netdev
);
4619 if (netif_running(netdev
))
4620 e1000e_down(adapter
);
4621 pci_disable_device(pdev
);
4623 /* Request a slot slot reset. */
4624 return PCI_ERS_RESULT_NEED_RESET
;
4628 * e1000_io_slot_reset - called after the pci bus has been reset.
4629 * @pdev: Pointer to PCI device
4631 * Restart the card from scratch, as if from a cold-boot. Implementation
4632 * resembles the first-half of the e1000_resume routine.
4634 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4636 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4637 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4638 struct e1000_hw
*hw
= &adapter
->hw
;
4640 pci_ers_result_t result
;
4642 e1000e_disable_l1aspm(pdev
);
4643 err
= pci_enable_device_mem(pdev
);
4646 "Cannot re-enable PCI device after reset.\n");
4647 result
= PCI_ERS_RESULT_DISCONNECT
;
4649 pci_set_master(pdev
);
4650 pci_restore_state(pdev
);
4652 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4653 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4655 e1000e_reset(adapter
);
4657 result
= PCI_ERS_RESULT_RECOVERED
;
4660 pci_cleanup_aer_uncorrect_error_status(pdev
);
4666 * e1000_io_resume - called when traffic can start flowing again.
4667 * @pdev: Pointer to PCI device
4669 * This callback is called when the error recovery driver tells us that
4670 * its OK to resume normal operation. Implementation resembles the
4671 * second-half of the e1000_resume routine.
4673 static void e1000_io_resume(struct pci_dev
*pdev
)
4675 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4676 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4678 e1000_init_manageability(adapter
);
4680 if (netif_running(netdev
)) {
4681 if (e1000e_up(adapter
)) {
4683 "can't bring device back up after reset\n");
4688 netif_device_attach(netdev
);
4691 * If the controller has AMT, do not set DRV_LOAD until the interface
4692 * is up. For all other cases, let the f/w know that the h/w is now
4693 * under the control of the driver.
4695 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4696 e1000_get_hw_control(adapter
);
4700 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4702 struct e1000_hw
*hw
= &adapter
->hw
;
4703 struct net_device
*netdev
= adapter
->netdev
;
4706 /* print bus type/speed/width info */
4707 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4709 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4713 e_info("Intel(R) PRO/%s Network Connection\n",
4714 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4715 e1000e_read_pba_num(hw
, &pba_num
);
4716 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4717 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4720 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4722 struct e1000_hw
*hw
= &adapter
->hw
;
4726 if (hw
->mac
.type
!= e1000_82573
)
4729 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4730 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
4731 /* Deep Smart Power Down (DSPD) */
4732 dev_warn(&adapter
->pdev
->dev
,
4733 "Warning: detected DSPD enabled in EEPROM\n");
4736 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4737 if (!ret_val
&& (le16_to_cpu(buf
) & (3 << 2))) {
4739 dev_warn(&adapter
->pdev
->dev
,
4740 "Warning: detected ASPM enabled in EEPROM\n");
4744 static const struct net_device_ops e1000e_netdev_ops
= {
4745 .ndo_open
= e1000_open
,
4746 .ndo_stop
= e1000_close
,
4747 .ndo_start_xmit
= e1000_xmit_frame
,
4748 .ndo_get_stats
= e1000_get_stats
,
4749 .ndo_set_multicast_list
= e1000_set_multi
,
4750 .ndo_set_mac_address
= e1000_set_mac
,
4751 .ndo_change_mtu
= e1000_change_mtu
,
4752 .ndo_do_ioctl
= e1000_ioctl
,
4753 .ndo_tx_timeout
= e1000_tx_timeout
,
4754 .ndo_validate_addr
= eth_validate_addr
,
4756 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
4757 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
4758 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
4759 #ifdef CONFIG_NET_POLL_CONTROLLER
4760 .ndo_poll_controller
= e1000_netpoll
,
4765 * e1000_probe - Device Initialization Routine
4766 * @pdev: PCI device information struct
4767 * @ent: entry in e1000_pci_tbl
4769 * Returns 0 on success, negative on failure
4771 * e1000_probe initializes an adapter identified by a pci_dev structure.
4772 * The OS initialization, configuring of the adapter private structure,
4773 * and a hardware reset occur.
4775 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4776 const struct pci_device_id
*ent
)
4778 struct net_device
*netdev
;
4779 struct e1000_adapter
*adapter
;
4780 struct e1000_hw
*hw
;
4781 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4782 resource_size_t mmio_start
, mmio_len
;
4783 resource_size_t flash_start
, flash_len
;
4785 static int cards_found
;
4786 int i
, err
, pci_using_dac
;
4787 u16 eeprom_data
= 0;
4788 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4790 e1000e_disable_l1aspm(pdev
);
4792 err
= pci_enable_device_mem(pdev
);
4797 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
4799 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
4803 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4805 err
= pci_set_consistent_dma_mask(pdev
,
4808 dev_err(&pdev
->dev
, "No usable DMA "
4809 "configuration, aborting\n");
4815 err
= pci_request_selected_regions_exclusive(pdev
,
4816 pci_select_bars(pdev
, IORESOURCE_MEM
),
4817 e1000e_driver_name
);
4821 pci_set_master(pdev
);
4822 /* PCI config space info */
4823 err
= pci_save_state(pdev
);
4825 goto err_alloc_etherdev
;
4828 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4830 goto err_alloc_etherdev
;
4832 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4834 pci_set_drvdata(pdev
, netdev
);
4835 adapter
= netdev_priv(netdev
);
4837 adapter
->netdev
= netdev
;
4838 adapter
->pdev
= pdev
;
4840 adapter
->pba
= ei
->pba
;
4841 adapter
->flags
= ei
->flags
;
4842 adapter
->flags2
= ei
->flags2
;
4843 adapter
->hw
.adapter
= adapter
;
4844 adapter
->hw
.mac
.type
= ei
->mac
;
4845 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4847 mmio_start
= pci_resource_start(pdev
, 0);
4848 mmio_len
= pci_resource_len(pdev
, 0);
4851 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4852 if (!adapter
->hw
.hw_addr
)
4855 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4856 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4857 flash_start
= pci_resource_start(pdev
, 1);
4858 flash_len
= pci_resource_len(pdev
, 1);
4859 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4860 if (!adapter
->hw
.flash_address
)
4864 /* construct the net_device struct */
4865 netdev
->netdev_ops
= &e1000e_netdev_ops
;
4866 e1000e_set_ethtool_ops(netdev
);
4867 netdev
->watchdog_timeo
= 5 * HZ
;
4868 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4869 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4871 netdev
->mem_start
= mmio_start
;
4872 netdev
->mem_end
= mmio_start
+ mmio_len
;
4874 adapter
->bd_number
= cards_found
++;
4876 e1000e_check_options(adapter
);
4878 /* setup adapter struct */
4879 err
= e1000_sw_init(adapter
);
4885 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4886 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4887 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4889 err
= ei
->get_variants(adapter
);
4893 if ((adapter
->flags
& FLAG_IS_ICH
) &&
4894 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
4895 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
4897 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4899 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4901 /* Copper options */
4902 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4903 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4904 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4905 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4908 if (e1000_check_reset_block(&adapter
->hw
))
4909 e_info("PHY reset is blocked due to SOL/IDER session.\n");
4911 netdev
->features
= NETIF_F_SG
|
4913 NETIF_F_HW_VLAN_TX
|
4916 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4917 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4919 netdev
->features
|= NETIF_F_TSO
;
4920 netdev
->features
|= NETIF_F_TSO6
;
4922 netdev
->vlan_features
|= NETIF_F_TSO
;
4923 netdev
->vlan_features
|= NETIF_F_TSO6
;
4924 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4925 netdev
->vlan_features
|= NETIF_F_SG
;
4928 netdev
->features
|= NETIF_F_HIGHDMA
;
4930 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4931 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4934 * before reading the NVM, reset the controller to
4935 * put the device in a known good starting state
4937 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4940 * systems with ASPM and others may see the checksum fail on the first
4941 * attempt. Let's give it a few tries
4944 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4947 e_err("The NVM Checksum Is Not Valid\n");
4953 e1000_eeprom_checks(adapter
);
4955 /* copy the MAC address out of the NVM */
4956 if (e1000e_read_mac_addr(&adapter
->hw
))
4957 e_err("NVM Read Error while reading MAC address\n");
4959 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4960 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4962 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4963 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
4968 init_timer(&adapter
->watchdog_timer
);
4969 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4970 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4972 init_timer(&adapter
->phy_info_timer
);
4973 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4974 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4976 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4977 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4978 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
4979 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
4981 /* Initialize link parameters. User can change them with ethtool */
4982 adapter
->hw
.mac
.autoneg
= 1;
4983 adapter
->fc_autoneg
= 1;
4984 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
4985 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
4986 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4988 /* ring size defaults */
4989 adapter
->rx_ring
->count
= 256;
4990 adapter
->tx_ring
->count
= 256;
4993 * Initial Wake on LAN setting - If APM wake is enabled in
4994 * the EEPROM, enable the ACPI Magic Packet filter
4996 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4997 /* APME bit in EEPROM is mapped to WUC.APME */
4998 eeprom_data
= er32(WUC
);
4999 eeprom_apme_mask
= E1000_WUC_APME
;
5000 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
5001 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
5002 (adapter
->hw
.bus
.func
== 1))
5003 e1000_read_nvm(&adapter
->hw
,
5004 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
5006 e1000_read_nvm(&adapter
->hw
,
5007 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
5010 /* fetch WoL from EEPROM */
5011 if (eeprom_data
& eeprom_apme_mask
)
5012 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
5015 * now that we have the eeprom settings, apply the special cases
5016 * where the eeprom may be wrong or the board simply won't support
5017 * wake on lan on a particular port
5019 if (!(adapter
->flags
& FLAG_HAS_WOL
))
5020 adapter
->eeprom_wol
= 0;
5022 /* initialize the wol settings based on the eeprom settings */
5023 adapter
->wol
= adapter
->eeprom_wol
;
5024 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
5026 /* save off EEPROM version number */
5027 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
5029 /* reset the hardware with the new settings */
5030 e1000e_reset(adapter
);
5033 * If the controller has AMT, do not set DRV_LOAD until the interface
5034 * is up. For all other cases, let the f/w know that the h/w is now
5035 * under the control of the driver.
5037 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5038 e1000_get_hw_control(adapter
);
5040 /* tell the stack to leave us alone until e1000_open() is called */
5041 netif_carrier_off(netdev
);
5042 netif_tx_stop_all_queues(netdev
);
5044 strcpy(netdev
->name
, "eth%d");
5045 err
= register_netdev(netdev
);
5049 e1000_print_device_info(adapter
);
5054 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5055 e1000_release_hw_control(adapter
);
5057 if (!e1000_check_reset_block(&adapter
->hw
))
5058 e1000_phy_hw_reset(&adapter
->hw
);
5061 kfree(adapter
->tx_ring
);
5062 kfree(adapter
->rx_ring
);
5064 if (adapter
->hw
.flash_address
)
5065 iounmap(adapter
->hw
.flash_address
);
5066 e1000e_reset_interrupt_capability(adapter
);
5068 iounmap(adapter
->hw
.hw_addr
);
5070 free_netdev(netdev
);
5072 pci_release_selected_regions(pdev
,
5073 pci_select_bars(pdev
, IORESOURCE_MEM
));
5076 pci_disable_device(pdev
);
5081 * e1000_remove - Device Removal Routine
5082 * @pdev: PCI device information struct
5084 * e1000_remove is called by the PCI subsystem to alert the driver
5085 * that it should release a PCI device. The could be caused by a
5086 * Hot-Plug event, or because the driver is going to be removed from
5089 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5091 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5092 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5096 * flush_scheduled work may reschedule our watchdog task, so
5097 * explicitly disable watchdog tasks from being rescheduled
5099 set_bit(__E1000_DOWN
, &adapter
->state
);
5100 del_timer_sync(&adapter
->watchdog_timer
);
5101 del_timer_sync(&adapter
->phy_info_timer
);
5103 flush_scheduled_work();
5106 * Release control of h/w to f/w. If f/w is AMT enabled, this
5107 * would have already happened in close and is redundant.
5109 e1000_release_hw_control(adapter
);
5111 unregister_netdev(netdev
);
5113 if (!e1000_check_reset_block(&adapter
->hw
))
5114 e1000_phy_hw_reset(&adapter
->hw
);
5116 e1000e_reset_interrupt_capability(adapter
);
5117 kfree(adapter
->tx_ring
);
5118 kfree(adapter
->rx_ring
);
5120 iounmap(adapter
->hw
.hw_addr
);
5121 if (adapter
->hw
.flash_address
)
5122 iounmap(adapter
->hw
.flash_address
);
5123 pci_release_selected_regions(pdev
,
5124 pci_select_bars(pdev
, IORESOURCE_MEM
));
5126 free_netdev(netdev
);
5129 err
= pci_disable_pcie_error_reporting(pdev
);
5132 "pci_disable_pcie_error_reporting failed 0x%x\n", err
);
5134 pci_disable_device(pdev
);
5137 /* PCI Error Recovery (ERS) */
5138 static struct pci_error_handlers e1000_err_handler
= {
5139 .error_detected
= e1000_io_error_detected
,
5140 .slot_reset
= e1000_io_slot_reset
,
5141 .resume
= e1000_io_resume
,
5144 static struct pci_device_id e1000_pci_tbl
[] = {
5145 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5146 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5147 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5148 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5149 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5150 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5151 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5152 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5153 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5155 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5156 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5157 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5158 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5160 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5161 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5162 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5164 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5165 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
5166 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
5168 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5169 board_80003es2lan
},
5170 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5171 board_80003es2lan
},
5172 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5173 board_80003es2lan
},
5174 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5175 board_80003es2lan
},
5177 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5178 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5179 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5180 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5181 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5182 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5183 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5185 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5186 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5187 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5188 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5189 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5190 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5191 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5192 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5193 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5195 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5196 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5197 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5199 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5200 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5202 { } /* terminate list */
5204 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
5206 /* PCI Device API Driver */
5207 static struct pci_driver e1000_driver
= {
5208 .name
= e1000e_driver_name
,
5209 .id_table
= e1000_pci_tbl
,
5210 .probe
= e1000_probe
,
5211 .remove
= __devexit_p(e1000_remove
),
5213 /* Power Management Hooks */
5214 .suspend
= e1000_suspend
,
5215 .resume
= e1000_resume
,
5217 .shutdown
= e1000_shutdown
,
5218 .err_handler
= &e1000_err_handler
5222 * e1000_init_module - Driver Registration Routine
5224 * e1000_init_module is the first routine called when the driver is
5225 * loaded. All it does is register with the PCI subsystem.
5227 static int __init
e1000_init_module(void)
5230 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
5231 e1000e_driver_name
, e1000e_driver_version
);
5232 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
5233 e1000e_driver_name
);
5234 ret
= pci_register_driver(&e1000_driver
);
5235 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
5236 PM_QOS_DEFAULT_VALUE
);
5240 module_init(e1000_init_module
);
5243 * e1000_exit_module - Driver Exit Cleanup Routine
5245 * e1000_exit_module is called just before the driver is removed
5248 static void __exit
e1000_exit_module(void)
5250 pci_unregister_driver(&e1000_driver
);
5251 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
5253 module_exit(e1000_exit_module
);
5256 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5257 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5258 MODULE_LICENSE("GPL");
5259 MODULE_VERSION(DRV_VERSION
);