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-k2"
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
;
579 static void e1000_print_tx_hang(struct e1000_adapter
*adapter
)
581 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
582 unsigned int i
= tx_ring
->next_to_clean
;
583 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
584 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
586 /* detected Tx unit hang */
587 e_err("Detected Tx Unit Hang:\n"
590 " next_to_use <%x>\n"
591 " next_to_clean <%x>\n"
592 "buffer_info[next_to_clean]:\n"
593 " time_stamp <%lx>\n"
594 " next_to_watch <%x>\n"
596 " next_to_watch.status <%x>\n",
597 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
598 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
599 tx_ring
->next_to_use
,
600 tx_ring
->next_to_clean
,
601 tx_ring
->buffer_info
[eop
].time_stamp
,
604 eop_desc
->upper
.fields
.status
);
608 * e1000_clean_tx_irq - Reclaim resources after transmit completes
609 * @adapter: board private structure
611 * the return value indicates whether actual cleaning was done, there
612 * is no guarantee that everything was cleaned
614 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
616 struct net_device
*netdev
= adapter
->netdev
;
617 struct e1000_hw
*hw
= &adapter
->hw
;
618 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
619 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
620 struct e1000_buffer
*buffer_info
;
622 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 for (cleaned
= 0; !cleaned
; ) {
632 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
633 buffer_info
= &tx_ring
->buffer_info
[i
];
634 cleaned
= (i
== eop
);
637 struct sk_buff
*skb
= buffer_info
->skb
;
638 unsigned int segs
, bytecount
;
639 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
640 /* multiply data chunks by size of headers */
641 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
643 total_tx_packets
+= segs
;
644 total_tx_bytes
+= bytecount
;
647 e1000_put_txbuf(adapter
, buffer_info
);
648 tx_desc
->upper
.data
= 0;
651 if (i
== tx_ring
->count
)
655 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
656 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
657 #define E1000_TX_WEIGHT 64
658 /* weight of a sort for tx, to avoid endless transmit cleanup */
659 if (count
++ == E1000_TX_WEIGHT
)
663 tx_ring
->next_to_clean
= i
;
665 #define TX_WAKE_THRESHOLD 32
666 if (cleaned
&& netif_carrier_ok(netdev
) &&
667 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
668 /* Make sure that anybody stopping the queue after this
669 * sees the new next_to_clean.
673 if (netif_queue_stopped(netdev
) &&
674 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
675 netif_wake_queue(netdev
);
676 ++adapter
->restart_queue
;
680 if (adapter
->detect_tx_hung
) {
682 * Detect a transmit hang in hardware, this serializes the
683 * check with the clearing of time_stamp and movement of i
685 adapter
->detect_tx_hung
= 0;
687 * read barrier to make sure that the ->dma member and time
688 * stamp are updated fully
691 if (tx_ring
->buffer_info
[eop
].dma
&&
692 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
693 + (adapter
->tx_timeout_factor
* HZ
))
694 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
695 e1000_print_tx_hang(adapter
);
696 netif_stop_queue(netdev
);
699 adapter
->total_tx_bytes
+= total_tx_bytes
;
700 adapter
->total_tx_packets
+= total_tx_packets
;
701 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
702 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
707 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
708 * @adapter: board private structure
710 * the return value indicates whether actual cleaning was done, there
711 * is no guarantee that everything was cleaned
713 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
714 int *work_done
, int work_to_do
)
716 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
717 struct net_device
*netdev
= adapter
->netdev
;
718 struct pci_dev
*pdev
= adapter
->pdev
;
719 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
720 struct e1000_buffer
*buffer_info
, *next_buffer
;
721 struct e1000_ps_page
*ps_page
;
725 int cleaned_count
= 0;
727 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
729 i
= rx_ring
->next_to_clean
;
730 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
731 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
732 buffer_info
= &rx_ring
->buffer_info
[i
];
734 while (staterr
& E1000_RXD_STAT_DD
) {
735 if (*work_done
>= work_to_do
)
738 skb
= buffer_info
->skb
;
740 /* in the packet split case this is header only */
741 prefetch(skb
->data
- NET_IP_ALIGN
);
744 if (i
== rx_ring
->count
)
746 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
749 next_buffer
= &rx_ring
->buffer_info
[i
];
753 pci_unmap_single(pdev
, buffer_info
->dma
,
754 adapter
->rx_ps_bsize0
,
756 buffer_info
->dma
= 0;
758 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
759 e_dbg("%s: Packet Split buffers didn't pick up the "
760 "full packet\n", netdev
->name
);
761 dev_kfree_skb_irq(skb
);
765 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
766 dev_kfree_skb_irq(skb
);
770 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
773 e_dbg("%s: Last part of the packet spanning multiple "
774 "descriptors\n", netdev
->name
);
775 dev_kfree_skb_irq(skb
);
780 skb_put(skb
, length
);
784 * this looks ugly, but it seems compiler issues make it
785 * more efficient than reusing j
787 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
790 * page alloc/put takes too long and effects small packet
791 * throughput, so unsplit small packets and save the alloc/put
792 * only valid in softirq (napi) context to call kmap_*
794 if (l1
&& (l1
<= copybreak
) &&
795 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
798 ps_page
= &buffer_info
->ps_pages
[0];
801 * there is no documentation about how to call
802 * kmap_atomic, so we can't hold the mapping
805 pci_dma_sync_single_for_cpu(pdev
, ps_page
->dma
,
806 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
807 vaddr
= kmap_atomic(ps_page
->page
, KM_SKB_DATA_SOFTIRQ
);
808 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
809 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
810 pci_dma_sync_single_for_device(pdev
, ps_page
->dma
,
811 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
814 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
822 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
823 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
827 ps_page
= &buffer_info
->ps_pages
[j
];
828 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
831 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
832 ps_page
->page
= NULL
;
834 skb
->data_len
+= length
;
835 skb
->truesize
+= length
;
838 /* strip the ethernet crc, problem is we're using pages now so
839 * this whole operation can get a little cpu intensive
841 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
))
842 pskb_trim(skb
, skb
->len
- 4);
845 total_rx_bytes
+= skb
->len
;
848 e1000_rx_checksum(adapter
, staterr
, le16_to_cpu(
849 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
851 if (rx_desc
->wb
.upper
.header_status
&
852 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
853 adapter
->rx_hdr_split
++;
855 e1000_receive_skb(adapter
, netdev
, skb
,
856 staterr
, rx_desc
->wb
.middle
.vlan
);
859 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
860 buffer_info
->skb
= NULL
;
862 /* return some buffers to hardware, one at a time is too slow */
863 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
864 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
868 /* use prefetched values */
870 buffer_info
= next_buffer
;
872 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
874 rx_ring
->next_to_clean
= i
;
876 cleaned_count
= e1000_desc_unused(rx_ring
);
878 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
880 adapter
->total_rx_bytes
+= total_rx_bytes
;
881 adapter
->total_rx_packets
+= total_rx_packets
;
882 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
883 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
888 * e1000_consume_page - helper function
890 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
895 skb
->data_len
+= length
;
896 skb
->truesize
+= length
;
900 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
901 * @adapter: board private structure
903 * the return value indicates whether actual cleaning was done, there
904 * is no guarantee that everything was cleaned
907 static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter
*adapter
,
908 int *work_done
, int work_to_do
)
910 struct net_device
*netdev
= adapter
->netdev
;
911 struct pci_dev
*pdev
= adapter
->pdev
;
912 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
913 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
914 struct e1000_buffer
*buffer_info
, *next_buffer
;
917 int cleaned_count
= 0;
918 bool cleaned
= false;
919 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
921 i
= rx_ring
->next_to_clean
;
922 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
923 buffer_info
= &rx_ring
->buffer_info
[i
];
925 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
929 if (*work_done
>= work_to_do
)
933 status
= rx_desc
->status
;
934 skb
= buffer_info
->skb
;
935 buffer_info
->skb
= NULL
;
938 if (i
== rx_ring
->count
)
940 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
943 next_buffer
= &rx_ring
->buffer_info
[i
];
947 pci_unmap_page(pdev
, buffer_info
->dma
, PAGE_SIZE
,
949 buffer_info
->dma
= 0;
951 length
= le16_to_cpu(rx_desc
->length
);
953 /* errors is only valid for DD + EOP descriptors */
954 if (unlikely((status
& E1000_RXD_STAT_EOP
) &&
955 (rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
))) {
956 /* recycle both page and skb */
957 buffer_info
->skb
= skb
;
958 /* an error means any chain goes out the window
960 if (rx_ring
->rx_skb_top
)
961 dev_kfree_skb(rx_ring
->rx_skb_top
);
962 rx_ring
->rx_skb_top
= NULL
;
966 #define rxtop rx_ring->rx_skb_top
967 if (!(status
& E1000_RXD_STAT_EOP
)) {
968 /* this descriptor is only the beginning (or middle) */
970 /* this is the beginning of a chain */
972 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
975 /* this is the middle of a chain */
976 skb_fill_page_desc(rxtop
,
977 skb_shinfo(rxtop
)->nr_frags
,
978 buffer_info
->page
, 0, length
);
979 /* re-use the skb, only consumed the page */
980 buffer_info
->skb
= skb
;
982 e1000_consume_page(buffer_info
, rxtop
, length
);
986 /* end of the chain */
987 skb_fill_page_desc(rxtop
,
988 skb_shinfo(rxtop
)->nr_frags
,
989 buffer_info
->page
, 0, length
);
990 /* re-use the current skb, we only consumed the
992 buffer_info
->skb
= skb
;
995 e1000_consume_page(buffer_info
, skb
, length
);
997 /* no chain, got EOP, this buf is the packet
998 * copybreak to save the put_page/alloc_page */
999 if (length
<= copybreak
&&
1000 skb_tailroom(skb
) >= length
) {
1002 vaddr
= kmap_atomic(buffer_info
->page
,
1003 KM_SKB_DATA_SOFTIRQ
);
1004 memcpy(skb_tail_pointer(skb
), vaddr
,
1006 kunmap_atomic(vaddr
,
1007 KM_SKB_DATA_SOFTIRQ
);
1008 /* re-use the page, so don't erase
1009 * buffer_info->page */
1010 skb_put(skb
, length
);
1012 skb_fill_page_desc(skb
, 0,
1013 buffer_info
->page
, 0,
1015 e1000_consume_page(buffer_info
, skb
,
1021 /* Receive Checksum Offload XXX recompute due to CRC strip? */
1022 e1000_rx_checksum(adapter
,
1024 ((u32
)(rx_desc
->errors
) << 24),
1025 le16_to_cpu(rx_desc
->csum
), skb
);
1027 /* probably a little skewed due to removing CRC */
1028 total_rx_bytes
+= skb
->len
;
1031 /* eth type trans needs skb->data to point to something */
1032 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1033 e_err("pskb_may_pull failed.\n");
1038 e1000_receive_skb(adapter
, netdev
, skb
, status
,
1042 rx_desc
->status
= 0;
1044 /* return some buffers to hardware, one at a time is too slow */
1045 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1046 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1050 /* use prefetched values */
1052 buffer_info
= next_buffer
;
1054 rx_ring
->next_to_clean
= i
;
1056 cleaned_count
= e1000_desc_unused(rx_ring
);
1058 adapter
->alloc_rx_buf(adapter
, cleaned_count
);
1060 adapter
->total_rx_bytes
+= total_rx_bytes
;
1061 adapter
->total_rx_packets
+= total_rx_packets
;
1062 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
1063 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
1068 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1069 * @adapter: board private structure
1071 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1073 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1074 struct e1000_buffer
*buffer_info
;
1075 struct e1000_ps_page
*ps_page
;
1076 struct pci_dev
*pdev
= adapter
->pdev
;
1079 /* Free all the Rx ring sk_buffs */
1080 for (i
= 0; i
< rx_ring
->count
; i
++) {
1081 buffer_info
= &rx_ring
->buffer_info
[i
];
1082 if (buffer_info
->dma
) {
1083 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1084 pci_unmap_single(pdev
, buffer_info
->dma
,
1085 adapter
->rx_buffer_len
,
1086 PCI_DMA_FROMDEVICE
);
1087 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1088 pci_unmap_page(pdev
, buffer_info
->dma
,
1090 PCI_DMA_FROMDEVICE
);
1091 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1092 pci_unmap_single(pdev
, buffer_info
->dma
,
1093 adapter
->rx_ps_bsize0
,
1094 PCI_DMA_FROMDEVICE
);
1095 buffer_info
->dma
= 0;
1098 if (buffer_info
->page
) {
1099 put_page(buffer_info
->page
);
1100 buffer_info
->page
= NULL
;
1103 if (buffer_info
->skb
) {
1104 dev_kfree_skb(buffer_info
->skb
);
1105 buffer_info
->skb
= NULL
;
1108 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1109 ps_page
= &buffer_info
->ps_pages
[j
];
1112 pci_unmap_page(pdev
, ps_page
->dma
, PAGE_SIZE
,
1113 PCI_DMA_FROMDEVICE
);
1115 put_page(ps_page
->page
);
1116 ps_page
->page
= NULL
;
1120 /* there also may be some cached data from a chained receive */
1121 if (rx_ring
->rx_skb_top
) {
1122 dev_kfree_skb(rx_ring
->rx_skb_top
);
1123 rx_ring
->rx_skb_top
= NULL
;
1126 /* Zero out the descriptor ring */
1127 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1129 rx_ring
->next_to_clean
= 0;
1130 rx_ring
->next_to_use
= 0;
1132 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1133 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1136 static void e1000e_downshift_workaround(struct work_struct
*work
)
1138 struct e1000_adapter
*adapter
= container_of(work
,
1139 struct e1000_adapter
, downshift_task
);
1141 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1145 * e1000_intr_msi - Interrupt Handler
1146 * @irq: interrupt number
1147 * @data: pointer to a network interface device structure
1149 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
1151 struct net_device
*netdev
= data
;
1152 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1153 struct e1000_hw
*hw
= &adapter
->hw
;
1154 u32 icr
= er32(ICR
);
1157 * read ICR disables interrupts using IAM
1160 if (icr
& E1000_ICR_LSC
) {
1161 hw
->mac
.get_link_status
= 1;
1163 * ICH8 workaround-- Call gig speed drop workaround on cable
1164 * disconnect (LSC) before accessing any PHY registers
1166 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1167 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1168 schedule_work(&adapter
->downshift_task
);
1171 * 80003ES2LAN workaround-- For packet buffer work-around on
1172 * link down event; disable receives here in the ISR and reset
1173 * adapter in watchdog
1175 if (netif_carrier_ok(netdev
) &&
1176 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1177 /* disable receives */
1178 u32 rctl
= er32(RCTL
);
1179 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1180 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1182 /* guard against interrupt when we're going down */
1183 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1184 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1187 if (napi_schedule_prep(&adapter
->napi
)) {
1188 adapter
->total_tx_bytes
= 0;
1189 adapter
->total_tx_packets
= 0;
1190 adapter
->total_rx_bytes
= 0;
1191 adapter
->total_rx_packets
= 0;
1192 __napi_schedule(&adapter
->napi
);
1199 * e1000_intr - Interrupt Handler
1200 * @irq: interrupt number
1201 * @data: pointer to a network interface device structure
1203 static irqreturn_t
e1000_intr(int irq
, void *data
)
1205 struct net_device
*netdev
= data
;
1206 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1207 struct e1000_hw
*hw
= &adapter
->hw
;
1208 u32 rctl
, icr
= er32(ICR
);
1211 return IRQ_NONE
; /* Not our interrupt */
1214 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1215 * not set, then the adapter didn't send an interrupt
1217 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1221 * Interrupt Auto-Mask...upon reading ICR,
1222 * interrupts are masked. No need for the
1226 if (icr
& E1000_ICR_LSC
) {
1227 hw
->mac
.get_link_status
= 1;
1229 * ICH8 workaround-- Call gig speed drop workaround on cable
1230 * disconnect (LSC) before accessing any PHY registers
1232 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1233 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1234 schedule_work(&adapter
->downshift_task
);
1237 * 80003ES2LAN workaround--
1238 * For packet buffer work-around on link down event;
1239 * disable receives here in the ISR and
1240 * reset adapter in watchdog
1242 if (netif_carrier_ok(netdev
) &&
1243 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1244 /* disable receives */
1246 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1247 adapter
->flags
|= FLAG_RX_RESTART_NOW
;
1249 /* guard against interrupt when we're going down */
1250 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1251 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1254 if (napi_schedule_prep(&adapter
->napi
)) {
1255 adapter
->total_tx_bytes
= 0;
1256 adapter
->total_tx_packets
= 0;
1257 adapter
->total_rx_bytes
= 0;
1258 adapter
->total_rx_packets
= 0;
1259 __napi_schedule(&adapter
->napi
);
1265 static irqreturn_t
e1000_msix_other(int irq
, void *data
)
1267 struct net_device
*netdev
= data
;
1268 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1269 struct e1000_hw
*hw
= &adapter
->hw
;
1270 u32 icr
= er32(ICR
);
1272 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1273 ew32(IMS
, E1000_IMS_OTHER
);
1277 if (icr
& adapter
->eiac_mask
)
1278 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1280 if (icr
& E1000_ICR_OTHER
) {
1281 if (!(icr
& E1000_ICR_LSC
))
1282 goto no_link_interrupt
;
1283 hw
->mac
.get_link_status
= 1;
1284 /* guard against interrupt when we're going down */
1285 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1286 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1290 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1296 static irqreturn_t
e1000_intr_msix_tx(int irq
, void *data
)
1298 struct net_device
*netdev
= data
;
1299 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1300 struct e1000_hw
*hw
= &adapter
->hw
;
1301 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1304 adapter
->total_tx_bytes
= 0;
1305 adapter
->total_tx_packets
= 0;
1307 if (!e1000_clean_tx_irq(adapter
))
1308 /* Ring was not completely cleaned, so fire another interrupt */
1309 ew32(ICS
, tx_ring
->ims_val
);
1314 static irqreturn_t
e1000_intr_msix_rx(int irq
, void *data
)
1316 struct net_device
*netdev
= data
;
1317 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1319 /* Write the ITR value calculated at the end of the
1320 * previous interrupt.
1322 if (adapter
->rx_ring
->set_itr
) {
1323 writel(1000000000 / (adapter
->rx_ring
->itr_val
* 256),
1324 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
1325 adapter
->rx_ring
->set_itr
= 0;
1328 if (napi_schedule_prep(&adapter
->napi
)) {
1329 adapter
->total_rx_bytes
= 0;
1330 adapter
->total_rx_packets
= 0;
1331 __napi_schedule(&adapter
->napi
);
1337 * e1000_configure_msix - Configure MSI-X hardware
1339 * e1000_configure_msix sets up the hardware to properly
1340 * generate MSI-X interrupts.
1342 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1344 struct e1000_hw
*hw
= &adapter
->hw
;
1345 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1346 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1348 u32 ctrl_ext
, ivar
= 0;
1350 adapter
->eiac_mask
= 0;
1352 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1353 if (hw
->mac
.type
== e1000_82574
) {
1354 u32 rfctl
= er32(RFCTL
);
1355 rfctl
|= E1000_RFCTL_ACK_DIS
;
1359 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1360 /* Configure Rx vector */
1361 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
1362 adapter
->eiac_mask
|= rx_ring
->ims_val
;
1363 if (rx_ring
->itr_val
)
1364 writel(1000000000 / (rx_ring
->itr_val
* 256),
1365 hw
->hw_addr
+ rx_ring
->itr_register
);
1367 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
1368 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
1370 /* Configure Tx vector */
1371 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
1373 if (tx_ring
->itr_val
)
1374 writel(1000000000 / (tx_ring
->itr_val
* 256),
1375 hw
->hw_addr
+ tx_ring
->itr_register
);
1377 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
1378 adapter
->eiac_mask
|= tx_ring
->ims_val
;
1379 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
1381 /* set vector for Other Causes, e.g. link changes */
1383 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
1384 if (rx_ring
->itr_val
)
1385 writel(1000000000 / (rx_ring
->itr_val
* 256),
1386 hw
->hw_addr
+ E1000_EITR_82574(vector
));
1388 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
1390 /* Cause Tx interrupts on every write back */
1395 /* enable MSI-X PBA support */
1396 ctrl_ext
= er32(CTRL_EXT
);
1397 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
1399 /* Auto-Mask Other interrupts upon ICR read */
1400 #define E1000_EIAC_MASK_82574 0x01F00000
1401 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
1402 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
1403 ew32(CTRL_EXT
, ctrl_ext
);
1407 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
1409 if (adapter
->msix_entries
) {
1410 pci_disable_msix(adapter
->pdev
);
1411 kfree(adapter
->msix_entries
);
1412 adapter
->msix_entries
= NULL
;
1413 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1414 pci_disable_msi(adapter
->pdev
);
1415 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
1422 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1424 * Attempt to configure interrupts using the best available
1425 * capabilities of the hardware and kernel.
1427 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
1433 switch (adapter
->int_mode
) {
1434 case E1000E_INT_MODE_MSIX
:
1435 if (adapter
->flags
& FLAG_HAS_MSIX
) {
1436 numvecs
= 3; /* RxQ0, TxQ0 and other */
1437 adapter
->msix_entries
= kcalloc(numvecs
,
1438 sizeof(struct msix_entry
),
1440 if (adapter
->msix_entries
) {
1441 for (i
= 0; i
< numvecs
; i
++)
1442 adapter
->msix_entries
[i
].entry
= i
;
1444 err
= pci_enable_msix(adapter
->pdev
,
1445 adapter
->msix_entries
,
1450 /* MSI-X failed, so fall through and try MSI */
1451 e_err("Failed to initialize MSI-X interrupts. "
1452 "Falling back to MSI interrupts.\n");
1453 e1000e_reset_interrupt_capability(adapter
);
1455 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1457 case E1000E_INT_MODE_MSI
:
1458 if (!pci_enable_msi(adapter
->pdev
)) {
1459 adapter
->flags
|= FLAG_MSI_ENABLED
;
1461 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1462 e_err("Failed to initialize MSI interrupts. Falling "
1463 "back to legacy interrupts.\n");
1466 case E1000E_INT_MODE_LEGACY
:
1467 /* Don't do anything; this is the system default */
1475 * e1000_request_msix - Initialize MSI-X interrupts
1477 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1480 static int e1000_request_msix(struct e1000_adapter
*adapter
)
1482 struct net_device
*netdev
= adapter
->netdev
;
1483 int err
= 0, vector
= 0;
1485 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1486 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1488 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1489 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1490 &e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1494 adapter
->rx_ring
->itr_register
= E1000_EITR_82574(vector
);
1495 adapter
->rx_ring
->itr_val
= adapter
->itr
;
1498 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
1499 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1501 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1502 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1503 &e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1507 adapter
->tx_ring
->itr_register
= E1000_EITR_82574(vector
);
1508 adapter
->tx_ring
->itr_val
= adapter
->itr
;
1511 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1512 &e1000_msix_other
, 0, netdev
->name
, netdev
);
1516 e1000_configure_msix(adapter
);
1523 * e1000_request_irq - initialize interrupts
1525 * Attempts to configure interrupts using the best available
1526 * capabilities of the hardware and kernel.
1528 static int e1000_request_irq(struct e1000_adapter
*adapter
)
1530 struct net_device
*netdev
= adapter
->netdev
;
1533 if (adapter
->msix_entries
) {
1534 err
= e1000_request_msix(adapter
);
1537 /* fall back to MSI */
1538 e1000e_reset_interrupt_capability(adapter
);
1539 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
1540 e1000e_set_interrupt_capability(adapter
);
1542 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
1543 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, 0,
1544 netdev
->name
, netdev
);
1548 /* fall back to legacy interrupt */
1549 e1000e_reset_interrupt_capability(adapter
);
1550 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
1553 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, IRQF_SHARED
,
1554 netdev
->name
, netdev
);
1556 e_err("Unable to allocate interrupt, Error: %d\n", err
);
1561 static void e1000_free_irq(struct e1000_adapter
*adapter
)
1563 struct net_device
*netdev
= adapter
->netdev
;
1565 if (adapter
->msix_entries
) {
1568 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1571 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1574 /* Other Causes interrupt vector */
1575 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1579 free_irq(adapter
->pdev
->irq
, netdev
);
1583 * e1000_irq_disable - Mask off interrupt generation on the NIC
1585 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
1587 struct e1000_hw
*hw
= &adapter
->hw
;
1590 if (adapter
->msix_entries
)
1591 ew32(EIAC_82574
, 0);
1593 synchronize_irq(adapter
->pdev
->irq
);
1597 * e1000_irq_enable - Enable default interrupt generation settings
1599 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
1601 struct e1000_hw
*hw
= &adapter
->hw
;
1603 if (adapter
->msix_entries
) {
1604 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
1605 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
1607 ew32(IMS
, IMS_ENABLE_MASK
);
1613 * e1000_get_hw_control - get control of the h/w from f/w
1614 * @adapter: address of board private structure
1616 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1617 * For ASF and Pass Through versions of f/w this means that
1618 * the driver is loaded. For AMT version (only with 82573)
1619 * of the f/w this means that the network i/f is open.
1621 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
1623 struct e1000_hw
*hw
= &adapter
->hw
;
1627 /* Let firmware know the driver has taken over */
1628 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1630 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
1631 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1632 ctrl_ext
= er32(CTRL_EXT
);
1633 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
1638 * e1000_release_hw_control - release control of the h/w to f/w
1639 * @adapter: address of board private structure
1641 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
1642 * For ASF and Pass Through versions of f/w this means that the
1643 * driver is no longer loaded. For AMT version (only with 82573) i
1644 * of the f/w this means that the network i/f is closed.
1647 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
1649 struct e1000_hw
*hw
= &adapter
->hw
;
1653 /* Let firmware taken over control of h/w */
1654 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
1656 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
1657 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
1658 ctrl_ext
= er32(CTRL_EXT
);
1659 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
1664 * @e1000_alloc_ring - allocate memory for a ring structure
1666 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
1667 struct e1000_ring
*ring
)
1669 struct pci_dev
*pdev
= adapter
->pdev
;
1671 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
1680 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1681 * @adapter: board private structure
1683 * Return 0 on success, negative on failure
1685 int e1000e_setup_tx_resources(struct e1000_adapter
*adapter
)
1687 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1688 int err
= -ENOMEM
, size
;
1690 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1691 tx_ring
->buffer_info
= vmalloc(size
);
1692 if (!tx_ring
->buffer_info
)
1694 memset(tx_ring
->buffer_info
, 0, size
);
1696 /* round up to nearest 4K */
1697 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1698 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1700 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
1704 tx_ring
->next_to_use
= 0;
1705 tx_ring
->next_to_clean
= 0;
1709 vfree(tx_ring
->buffer_info
);
1710 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1715 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1716 * @adapter: board private structure
1718 * Returns 0 on success, negative on failure
1720 int e1000e_setup_rx_resources(struct e1000_adapter
*adapter
)
1722 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1723 struct e1000_buffer
*buffer_info
;
1724 int i
, size
, desc_len
, err
= -ENOMEM
;
1726 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1727 rx_ring
->buffer_info
= vmalloc(size
);
1728 if (!rx_ring
->buffer_info
)
1730 memset(rx_ring
->buffer_info
, 0, size
);
1732 for (i
= 0; i
< rx_ring
->count
; i
++) {
1733 buffer_info
= &rx_ring
->buffer_info
[i
];
1734 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
1735 sizeof(struct e1000_ps_page
),
1737 if (!buffer_info
->ps_pages
)
1741 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1743 /* Round up to nearest 4K */
1744 rx_ring
->size
= rx_ring
->count
* desc_len
;
1745 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1747 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
1751 rx_ring
->next_to_clean
= 0;
1752 rx_ring
->next_to_use
= 0;
1753 rx_ring
->rx_skb_top
= NULL
;
1758 for (i
= 0; i
< rx_ring
->count
; i
++) {
1759 buffer_info
= &rx_ring
->buffer_info
[i
];
1760 kfree(buffer_info
->ps_pages
);
1763 vfree(rx_ring
->buffer_info
);
1764 e_err("Unable to allocate memory for the transmit descriptor ring\n");
1769 * e1000_clean_tx_ring - Free Tx Buffers
1770 * @adapter: board private structure
1772 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1774 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1775 struct e1000_buffer
*buffer_info
;
1779 for (i
= 0; i
< tx_ring
->count
; i
++) {
1780 buffer_info
= &tx_ring
->buffer_info
[i
];
1781 e1000_put_txbuf(adapter
, buffer_info
);
1784 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1785 memset(tx_ring
->buffer_info
, 0, size
);
1787 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1789 tx_ring
->next_to_use
= 0;
1790 tx_ring
->next_to_clean
= 0;
1792 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1793 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1797 * e1000e_free_tx_resources - Free Tx Resources per Queue
1798 * @adapter: board private structure
1800 * Free all transmit software resources
1802 void e1000e_free_tx_resources(struct e1000_adapter
*adapter
)
1804 struct pci_dev
*pdev
= adapter
->pdev
;
1805 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1807 e1000_clean_tx_ring(adapter
);
1809 vfree(tx_ring
->buffer_info
);
1810 tx_ring
->buffer_info
= NULL
;
1812 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
1814 tx_ring
->desc
= NULL
;
1818 * e1000e_free_rx_resources - Free Rx Resources
1819 * @adapter: board private structure
1821 * Free all receive software resources
1824 void e1000e_free_rx_resources(struct e1000_adapter
*adapter
)
1826 struct pci_dev
*pdev
= adapter
->pdev
;
1827 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1830 e1000_clean_rx_ring(adapter
);
1832 for (i
= 0; i
< rx_ring
->count
; i
++) {
1833 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
1836 vfree(rx_ring
->buffer_info
);
1837 rx_ring
->buffer_info
= NULL
;
1839 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
1841 rx_ring
->desc
= NULL
;
1845 * e1000_update_itr - update the dynamic ITR value based on statistics
1846 * @adapter: pointer to adapter
1847 * @itr_setting: current adapter->itr
1848 * @packets: the number of packets during this measurement interval
1849 * @bytes: the number of bytes during this measurement interval
1851 * Stores a new ITR value based on packets and byte
1852 * counts during the last interrupt. The advantage of per interrupt
1853 * computation is faster updates and more accurate ITR for the current
1854 * traffic pattern. Constants in this function were computed
1855 * based on theoretical maximum wire speed and thresholds were set based
1856 * on testing data as well as attempting to minimize response time
1857 * while increasing bulk throughput. This functionality is controlled
1858 * by the InterruptThrottleRate module parameter.
1860 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
1861 u16 itr_setting
, int packets
,
1864 unsigned int retval
= itr_setting
;
1867 goto update_itr_done
;
1869 switch (itr_setting
) {
1870 case lowest_latency
:
1871 /* handle TSO and jumbo frames */
1872 if (bytes
/packets
> 8000)
1873 retval
= bulk_latency
;
1874 else if ((packets
< 5) && (bytes
> 512)) {
1875 retval
= low_latency
;
1878 case low_latency
: /* 50 usec aka 20000 ints/s */
1879 if (bytes
> 10000) {
1880 /* this if handles the TSO accounting */
1881 if (bytes
/packets
> 8000) {
1882 retval
= bulk_latency
;
1883 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
1884 retval
= bulk_latency
;
1885 } else if ((packets
> 35)) {
1886 retval
= lowest_latency
;
1888 } else if (bytes
/packets
> 2000) {
1889 retval
= bulk_latency
;
1890 } else if (packets
<= 2 && bytes
< 512) {
1891 retval
= lowest_latency
;
1894 case bulk_latency
: /* 250 usec aka 4000 ints/s */
1895 if (bytes
> 25000) {
1897 retval
= low_latency
;
1899 } else if (bytes
< 6000) {
1900 retval
= low_latency
;
1909 static void e1000_set_itr(struct e1000_adapter
*adapter
)
1911 struct e1000_hw
*hw
= &adapter
->hw
;
1913 u32 new_itr
= adapter
->itr
;
1915 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1916 if (adapter
->link_speed
!= SPEED_1000
) {
1922 adapter
->tx_itr
= e1000_update_itr(adapter
,
1924 adapter
->total_tx_packets
,
1925 adapter
->total_tx_bytes
);
1926 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1927 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
1928 adapter
->tx_itr
= low_latency
;
1930 adapter
->rx_itr
= e1000_update_itr(adapter
,
1932 adapter
->total_rx_packets
,
1933 adapter
->total_rx_bytes
);
1934 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1935 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
1936 adapter
->rx_itr
= low_latency
;
1938 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
1940 switch (current_itr
) {
1941 /* counts and packets in update_itr are dependent on these numbers */
1942 case lowest_latency
:
1946 new_itr
= 20000; /* aka hwitr = ~200 */
1956 if (new_itr
!= adapter
->itr
) {
1958 * this attempts to bias the interrupt rate towards Bulk
1959 * by adding intermediate steps when interrupt rate is
1962 new_itr
= new_itr
> adapter
->itr
?
1963 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
1965 adapter
->itr
= new_itr
;
1966 adapter
->rx_ring
->itr_val
= new_itr
;
1967 if (adapter
->msix_entries
)
1968 adapter
->rx_ring
->set_itr
= 1;
1970 ew32(ITR
, 1000000000 / (new_itr
* 256));
1975 * e1000_alloc_queues - Allocate memory for all rings
1976 * @adapter: board private structure to initialize
1978 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1980 adapter
->tx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1981 if (!adapter
->tx_ring
)
1984 adapter
->rx_ring
= kzalloc(sizeof(struct e1000_ring
), GFP_KERNEL
);
1985 if (!adapter
->rx_ring
)
1990 e_err("Unable to allocate memory for queues\n");
1991 kfree(adapter
->rx_ring
);
1992 kfree(adapter
->tx_ring
);
1997 * e1000_clean - NAPI Rx polling callback
1998 * @napi: struct associated with this polling callback
1999 * @budget: amount of packets driver is allowed to process this poll
2001 static int e1000_clean(struct napi_struct
*napi
, int budget
)
2003 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
2004 struct e1000_hw
*hw
= &adapter
->hw
;
2005 struct net_device
*poll_dev
= adapter
->netdev
;
2006 int tx_cleaned
= 0, work_done
= 0;
2008 adapter
= netdev_priv(poll_dev
);
2010 if (adapter
->msix_entries
&&
2011 !(adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2014 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2017 adapter
->clean_rx(adapter
, &work_done
, budget
);
2022 /* If budget not fully consumed, exit the polling mode */
2023 if (work_done
< budget
) {
2024 if (adapter
->itr_setting
& 3)
2025 e1000_set_itr(adapter
);
2026 napi_complete(napi
);
2027 if (adapter
->msix_entries
)
2028 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2030 e1000_irq_enable(adapter
);
2036 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2038 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2039 struct e1000_hw
*hw
= &adapter
->hw
;
2042 /* don't update vlan cookie if already programmed */
2043 if ((adapter
->hw
.mng_cookie
.status
&
2044 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2045 (vid
== adapter
->mng_vlan_id
))
2047 /* add VID to filter table */
2048 index
= (vid
>> 5) & 0x7F;
2049 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2050 vfta
|= (1 << (vid
& 0x1F));
2051 e1000e_write_vfta(hw
, index
, vfta
);
2054 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2056 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2057 struct e1000_hw
*hw
= &adapter
->hw
;
2060 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2061 e1000_irq_disable(adapter
);
2062 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2064 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2065 e1000_irq_enable(adapter
);
2067 if ((adapter
->hw
.mng_cookie
.status
&
2068 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2069 (vid
== adapter
->mng_vlan_id
)) {
2070 /* release control to f/w */
2071 e1000_release_hw_control(adapter
);
2075 /* remove VID from filter table */
2076 index
= (vid
>> 5) & 0x7F;
2077 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2078 vfta
&= ~(1 << (vid
& 0x1F));
2079 e1000e_write_vfta(hw
, index
, vfta
);
2082 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2084 struct net_device
*netdev
= adapter
->netdev
;
2085 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2086 u16 old_vid
= adapter
->mng_vlan_id
;
2088 if (!adapter
->vlgrp
)
2091 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
2092 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2093 if (adapter
->hw
.mng_cookie
.status
&
2094 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2095 e1000_vlan_rx_add_vid(netdev
, vid
);
2096 adapter
->mng_vlan_id
= vid
;
2099 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
2101 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
2102 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
2104 adapter
->mng_vlan_id
= vid
;
2109 static void e1000_vlan_rx_register(struct net_device
*netdev
,
2110 struct vlan_group
*grp
)
2112 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2113 struct e1000_hw
*hw
= &adapter
->hw
;
2116 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2117 e1000_irq_disable(adapter
);
2118 adapter
->vlgrp
= grp
;
2121 /* enable VLAN tag insert/strip */
2123 ctrl
|= E1000_CTRL_VME
;
2126 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2127 /* enable VLAN receive filtering */
2129 rctl
&= ~E1000_RCTL_CFIEN
;
2131 e1000_update_mng_vlan(adapter
);
2134 /* disable VLAN tag insert/strip */
2136 ctrl
&= ~E1000_CTRL_VME
;
2139 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2140 if (adapter
->mng_vlan_id
!=
2141 (u16
)E1000_MNG_VLAN_NONE
) {
2142 e1000_vlan_rx_kill_vid(netdev
,
2143 adapter
->mng_vlan_id
);
2144 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2149 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
2150 e1000_irq_enable(adapter
);
2153 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2157 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2159 if (!adapter
->vlgrp
)
2162 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2163 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2165 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
2169 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
2171 struct e1000_hw
*hw
= &adapter
->hw
;
2174 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2180 * enable receiving management packets to the host. this will probably
2181 * generate destination unreachable messages from the host OS, but
2182 * the packets will be handled on SMBUS
2184 manc
|= E1000_MANC_EN_MNG2HOST
;
2185 manc2h
= er32(MANC2H
);
2186 #define E1000_MNG2HOST_PORT_623 (1 << 5)
2187 #define E1000_MNG2HOST_PORT_664 (1 << 6)
2188 manc2h
|= E1000_MNG2HOST_PORT_623
;
2189 manc2h
|= E1000_MNG2HOST_PORT_664
;
2190 ew32(MANC2H
, manc2h
);
2195 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
2196 * @adapter: board private structure
2198 * Configure the Tx unit of the MAC after a reset.
2200 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2202 struct e1000_hw
*hw
= &adapter
->hw
;
2203 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2205 u32 tdlen
, tctl
, tipg
, tarc
;
2208 /* Setup the HW Tx Head and Tail descriptor pointers */
2209 tdba
= tx_ring
->dma
;
2210 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2211 ew32(TDBAL
, (tdba
& DMA_32BIT_MASK
));
2212 ew32(TDBAH
, (tdba
>> 32));
2216 tx_ring
->head
= E1000_TDH
;
2217 tx_ring
->tail
= E1000_TDT
;
2219 /* Set the default values for the Tx Inter Packet Gap timer */
2220 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
; /* 8 */
2221 ipgr1
= DEFAULT_82543_TIPG_IPGR1
; /* 8 */
2222 ipgr2
= DEFAULT_82543_TIPG_IPGR2
; /* 6 */
2224 if (adapter
->flags
& FLAG_TIPG_MEDIUM_FOR_80003ESLAN
)
2225 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
; /* 7 */
2227 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
2228 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
2231 /* Set the Tx Interrupt Delay register */
2232 ew32(TIDV
, adapter
->tx_int_delay
);
2233 /* Tx irq moderation */
2234 ew32(TADV
, adapter
->tx_abs_int_delay
);
2236 /* Program the Transmit Control Register */
2238 tctl
&= ~E1000_TCTL_CT
;
2239 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2240 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2242 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2243 tarc
= er32(TARC(0));
2245 * set the speed mode bit, we'll clear it if we're not at
2246 * gigabit link later
2248 #define SPEED_MODE_BIT (1 << 21)
2249 tarc
|= SPEED_MODE_BIT
;
2250 ew32(TARC(0), tarc
);
2253 /* errata: program both queues to unweighted RR */
2254 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2255 tarc
= er32(TARC(0));
2257 ew32(TARC(0), tarc
);
2258 tarc
= er32(TARC(1));
2260 ew32(TARC(1), tarc
);
2263 e1000e_config_collision_dist(hw
);
2265 /* Setup Transmit Descriptor Settings for eop descriptor */
2266 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
2268 /* only set IDE if we are delaying interrupts using the timers */
2269 if (adapter
->tx_int_delay
)
2270 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
2272 /* enable Report Status bit */
2273 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
2277 adapter
->tx_queue_len
= adapter
->netdev
->tx_queue_len
;
2281 * e1000_setup_rctl - configure the receive control registers
2282 * @adapter: Board private structure
2284 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2285 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2286 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
2288 struct e1000_hw
*hw
= &adapter
->hw
;
2293 /* Program MC offset vector base */
2295 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
2296 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
2297 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
2298 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
2300 /* Do not Store bad packets */
2301 rctl
&= ~E1000_RCTL_SBP
;
2303 /* Enable Long Packet receive */
2304 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2305 rctl
&= ~E1000_RCTL_LPE
;
2307 rctl
|= E1000_RCTL_LPE
;
2309 /* Some systems expect that the CRC is included in SMBUS traffic. The
2310 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2311 * host memory when this is enabled
2313 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
2314 rctl
|= E1000_RCTL_SECRC
;
2316 /* Setup buffer sizes */
2317 rctl
&= ~E1000_RCTL_SZ_4096
;
2318 rctl
|= E1000_RCTL_BSEX
;
2319 switch (adapter
->rx_buffer_len
) {
2321 rctl
|= E1000_RCTL_SZ_256
;
2322 rctl
&= ~E1000_RCTL_BSEX
;
2325 rctl
|= E1000_RCTL_SZ_512
;
2326 rctl
&= ~E1000_RCTL_BSEX
;
2329 rctl
|= E1000_RCTL_SZ_1024
;
2330 rctl
&= ~E1000_RCTL_BSEX
;
2334 rctl
|= E1000_RCTL_SZ_2048
;
2335 rctl
&= ~E1000_RCTL_BSEX
;
2338 rctl
|= E1000_RCTL_SZ_4096
;
2341 rctl
|= E1000_RCTL_SZ_8192
;
2344 rctl
|= E1000_RCTL_SZ_16384
;
2349 * 82571 and greater support packet-split where the protocol
2350 * header is placed in skb->data and the packet data is
2351 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2352 * In the case of a non-split, skb->data is linearly filled,
2353 * followed by the page buffers. Therefore, skb->data is
2354 * sized to hold the largest protocol header.
2356 * allocations using alloc_page take too long for regular MTU
2357 * so only enable packet split for jumbo frames
2359 * Using pages when the page size is greater than 16k wastes
2360 * a lot of memory, since we allocate 3 pages at all times
2363 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
2364 if (!(adapter
->flags
& FLAG_IS_ICH
) && (pages
<= 3) &&
2365 (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
2366 adapter
->rx_ps_pages
= pages
;
2368 adapter
->rx_ps_pages
= 0;
2370 if (adapter
->rx_ps_pages
) {
2371 /* Configure extra packet-split registers */
2372 rfctl
= er32(RFCTL
);
2373 rfctl
|= E1000_RFCTL_EXTEN
;
2375 * disable packet split support for IPv6 extension headers,
2376 * because some malformed IPv6 headers can hang the Rx
2378 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
2379 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
2383 /* Enable Packet split descriptors */
2384 rctl
|= E1000_RCTL_DTYP_PS
;
2386 psrctl
|= adapter
->rx_ps_bsize0
>>
2387 E1000_PSRCTL_BSIZE0_SHIFT
;
2389 switch (adapter
->rx_ps_pages
) {
2391 psrctl
|= PAGE_SIZE
<<
2392 E1000_PSRCTL_BSIZE3_SHIFT
;
2394 psrctl
|= PAGE_SIZE
<<
2395 E1000_PSRCTL_BSIZE2_SHIFT
;
2397 psrctl
|= PAGE_SIZE
>>
2398 E1000_PSRCTL_BSIZE1_SHIFT
;
2402 ew32(PSRCTL
, psrctl
);
2406 /* just started the receive unit, no need to restart */
2407 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
2411 * e1000_configure_rx - Configure Receive Unit after Reset
2412 * @adapter: board private structure
2414 * Configure the Rx unit of the MAC after a reset.
2416 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
2418 struct e1000_hw
*hw
= &adapter
->hw
;
2419 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
2421 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2423 if (adapter
->rx_ps_pages
) {
2424 /* this is a 32 byte descriptor */
2425 rdlen
= rx_ring
->count
*
2426 sizeof(union e1000_rx_desc_packet_split
);
2427 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2428 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2429 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2430 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2431 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
2432 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
2434 rdlen
= rx_ring
->count
* sizeof(struct e1000_rx_desc
);
2435 adapter
->clean_rx
= e1000_clean_rx_irq
;
2436 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2439 /* disable receives while setting up the descriptors */
2441 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2445 /* set the Receive Delay Timer Register */
2446 ew32(RDTR
, adapter
->rx_int_delay
);
2448 /* irq moderation */
2449 ew32(RADV
, adapter
->rx_abs_int_delay
);
2450 if (adapter
->itr_setting
!= 0)
2451 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
2453 ctrl_ext
= er32(CTRL_EXT
);
2454 /* Reset delay timers after every interrupt */
2455 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2456 /* Auto-Mask interrupts upon ICR access */
2457 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2458 ew32(IAM
, 0xffffffff);
2459 ew32(CTRL_EXT
, ctrl_ext
);
2463 * Setup the HW Rx Head and Tail Descriptor Pointers and
2464 * the Base and Length of the Rx Descriptor Ring
2466 rdba
= rx_ring
->dma
;
2467 ew32(RDBAL
, (rdba
& DMA_32BIT_MASK
));
2468 ew32(RDBAH
, (rdba
>> 32));
2472 rx_ring
->head
= E1000_RDH
;
2473 rx_ring
->tail
= E1000_RDT
;
2475 /* Enable Receive Checksum Offload for TCP and UDP */
2476 rxcsum
= er32(RXCSUM
);
2477 if (adapter
->flags
& FLAG_RX_CSUM_ENABLED
) {
2478 rxcsum
|= E1000_RXCSUM_TUOFL
;
2481 * IPv4 payload checksum for UDP fragments must be
2482 * used in conjunction with packet-split.
2484 if (adapter
->rx_ps_pages
)
2485 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2487 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2488 /* no need to clear IPPCSE as it defaults to 0 */
2490 ew32(RXCSUM
, rxcsum
);
2493 * Enable early receives on supported devices, only takes effect when
2494 * packet size is equal or larger than the specified value (in 8 byte
2495 * units), e.g. using jumbo frames when setting to E1000_ERT_2048
2497 if ((adapter
->flags
& FLAG_HAS_ERT
) &&
2498 (adapter
->netdev
->mtu
> ETH_DATA_LEN
)) {
2499 u32 rxdctl
= er32(RXDCTL(0));
2500 ew32(RXDCTL(0), rxdctl
| 0x3);
2501 ew32(ERT
, E1000_ERT_2048
| (1 << 13));
2503 * With jumbo frames and early-receive enabled, excessive
2504 * C4->C2 latencies result in dropped transactions.
2506 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2507 e1000e_driver_name
, 55);
2509 pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY
,
2511 PM_QOS_DEFAULT_VALUE
);
2514 /* Enable Receives */
2519 * e1000_update_mc_addr_list - Update Multicast addresses
2520 * @hw: pointer to the HW structure
2521 * @mc_addr_list: array of multicast addresses to program
2522 * @mc_addr_count: number of multicast addresses to program
2523 * @rar_used_count: the first RAR register free to program
2524 * @rar_count: total number of supported Receive Address Registers
2526 * Updates the Receive Address Registers and Multicast Table Array.
2527 * The caller must have a packed mc_addr_list of multicast addresses.
2528 * The parameter rar_count will usually be hw->mac.rar_entry_count
2529 * unless there are workarounds that change this. Currently no func pointer
2530 * exists and all implementations are handled in the generic version of this
2533 static void e1000_update_mc_addr_list(struct e1000_hw
*hw
, u8
*mc_addr_list
,
2534 u32 mc_addr_count
, u32 rar_used_count
,
2537 hw
->mac
.ops
.update_mc_addr_list(hw
, mc_addr_list
, mc_addr_count
,
2538 rar_used_count
, rar_count
);
2542 * e1000_set_multi - Multicast and Promiscuous mode set
2543 * @netdev: network interface device structure
2545 * The set_multi entry point is called whenever the multicast address
2546 * list or the network interface flags are updated. This routine is
2547 * responsible for configuring the hardware for proper multicast,
2548 * promiscuous mode, and all-multi behavior.
2550 static void e1000_set_multi(struct net_device
*netdev
)
2552 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2553 struct e1000_hw
*hw
= &adapter
->hw
;
2554 struct e1000_mac_info
*mac
= &hw
->mac
;
2555 struct dev_mc_list
*mc_ptr
;
2560 /* Check for Promiscuous and All Multicast modes */
2564 if (netdev
->flags
& IFF_PROMISC
) {
2565 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2566 rctl
&= ~E1000_RCTL_VFE
;
2568 if (netdev
->flags
& IFF_ALLMULTI
) {
2569 rctl
|= E1000_RCTL_MPE
;
2570 rctl
&= ~E1000_RCTL_UPE
;
2572 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2574 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
2575 rctl
|= E1000_RCTL_VFE
;
2580 if (netdev
->mc_count
) {
2581 mta_list
= kmalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2585 /* prepare a packed array of only addresses. */
2586 mc_ptr
= netdev
->mc_list
;
2588 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2591 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
,
2593 mc_ptr
= mc_ptr
->next
;
2596 e1000_update_mc_addr_list(hw
, mta_list
, i
, 1,
2597 mac
->rar_entry_count
);
2601 * if we're called from probe, we might not have
2602 * anything to do here, so clear out the list
2604 e1000_update_mc_addr_list(hw
, NULL
, 0, 1, mac
->rar_entry_count
);
2609 * e1000_configure - configure the hardware for Rx and Tx
2610 * @adapter: private board structure
2612 static void e1000_configure(struct e1000_adapter
*adapter
)
2614 e1000_set_multi(adapter
->netdev
);
2616 e1000_restore_vlan(adapter
);
2617 e1000_init_manageability(adapter
);
2619 e1000_configure_tx(adapter
);
2620 e1000_setup_rctl(adapter
);
2621 e1000_configure_rx(adapter
);
2622 adapter
->alloc_rx_buf(adapter
, e1000_desc_unused(adapter
->rx_ring
));
2626 * e1000e_power_up_phy - restore link in case the phy was powered down
2627 * @adapter: address of board private structure
2629 * The phy may be powered down to save power and turn off link when the
2630 * driver is unloaded and wake on lan is not enabled (among others)
2631 * *** this routine MUST be followed by a call to e1000e_reset ***
2633 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
2637 /* Just clear the power down bit to wake the phy back up */
2638 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
2640 * According to the manual, the phy will retain its
2641 * settings across a power-down/up cycle
2643 e1e_rphy(&adapter
->hw
, PHY_CONTROL
, &mii_reg
);
2644 mii_reg
&= ~MII_CR_POWER_DOWN
;
2645 e1e_wphy(&adapter
->hw
, PHY_CONTROL
, mii_reg
);
2648 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
2652 * e1000_power_down_phy - Power down the PHY
2654 * Power down the PHY so no link is implied when interface is down
2655 * The PHY cannot be powered down is management or WoL is active
2657 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
2659 struct e1000_hw
*hw
= &adapter
->hw
;
2662 /* WoL is enabled */
2666 /* non-copper PHY? */
2667 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
2670 /* reset is blocked because of a SoL/IDER session */
2671 if (e1000e_check_mng_mode(hw
) || e1000_check_reset_block(hw
))
2674 /* manageability (AMT) is enabled */
2675 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
2678 /* power down the PHY */
2679 e1e_rphy(hw
, PHY_CONTROL
, &mii_reg
);
2680 mii_reg
|= MII_CR_POWER_DOWN
;
2681 e1e_wphy(hw
, PHY_CONTROL
, mii_reg
);
2686 * e1000e_reset - bring the hardware into a known good state
2688 * This function boots the hardware and enables some settings that
2689 * require a configuration cycle of the hardware - those cannot be
2690 * set/changed during runtime. After reset the device needs to be
2691 * properly configured for Rx, Tx etc.
2693 void e1000e_reset(struct e1000_adapter
*adapter
)
2695 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2696 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
2697 struct e1000_hw
*hw
= &adapter
->hw
;
2698 u32 tx_space
, min_tx_space
, min_rx_space
;
2699 u32 pba
= adapter
->pba
;
2702 /* reset Packet Buffer Allocation to default */
2705 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
2707 * To maintain wire speed transmits, the Tx FIFO should be
2708 * large enough to accommodate two full transmit packets,
2709 * rounded up to the next 1KB and expressed in KB. Likewise,
2710 * the Rx FIFO should be large enough to accommodate at least
2711 * one full receive packet and is similarly rounded up and
2715 /* upper 16 bits has Tx packet buffer allocation size in KB */
2716 tx_space
= pba
>> 16;
2717 /* lower 16 bits has Rx packet buffer allocation size in KB */
2720 * the Tx fifo also stores 16 bytes of information about the tx
2721 * but don't include ethernet FCS because hardware appends it
2723 min_tx_space
= (adapter
->max_frame_size
+
2724 sizeof(struct e1000_tx_desc
) -
2726 min_tx_space
= ALIGN(min_tx_space
, 1024);
2727 min_tx_space
>>= 10;
2728 /* software strips receive CRC, so leave room for it */
2729 min_rx_space
= adapter
->max_frame_size
;
2730 min_rx_space
= ALIGN(min_rx_space
, 1024);
2731 min_rx_space
>>= 10;
2734 * If current Tx allocation is less than the min Tx FIFO size,
2735 * and the min Tx FIFO size is less than the current Rx FIFO
2736 * allocation, take space away from current Rx allocation
2738 if ((tx_space
< min_tx_space
) &&
2739 ((min_tx_space
- tx_space
) < pba
)) {
2740 pba
-= min_tx_space
- tx_space
;
2743 * if short on Rx space, Rx wins and must trump tx
2744 * adjustment or use Early Receive if available
2746 if ((pba
< min_rx_space
) &&
2747 (!(adapter
->flags
& FLAG_HAS_ERT
)))
2748 /* ERT enabled in e1000_configure_rx */
2757 * flow control settings
2759 * The high water mark must be low enough to fit one full frame
2760 * (or the size used for early receive) above it in the Rx FIFO.
2761 * Set it to the lower of:
2762 * - 90% of the Rx FIFO size, and
2763 * - the full Rx FIFO size minus the early receive size (for parts
2764 * with ERT support assuming ERT set to E1000_ERT_2048), or
2765 * - the full Rx FIFO size minus one full frame
2767 if (adapter
->flags
& FLAG_HAS_ERT
)
2768 hwm
= min(((pba
<< 10) * 9 / 10),
2769 ((pba
<< 10) - (E1000_ERT_2048
<< 3)));
2771 hwm
= min(((pba
<< 10) * 9 / 10),
2772 ((pba
<< 10) - adapter
->max_frame_size
));
2774 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
2775 fc
->low_water
= fc
->high_water
- 8;
2777 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
2778 fc
->pause_time
= 0xFFFF;
2780 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
2782 fc
->current_mode
= fc
->requested_mode
;
2784 /* Allow time for pending master requests to run */
2785 mac
->ops
.reset_hw(hw
);
2788 * For parts with AMT enabled, let the firmware know
2789 * that the network interface is in control
2791 if (adapter
->flags
& FLAG_HAS_AMT
)
2792 e1000_get_hw_control(adapter
);
2796 if (mac
->ops
.init_hw(hw
))
2797 e_err("Hardware Error\n");
2799 e1000_update_mng_vlan(adapter
);
2801 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2802 ew32(VET
, ETH_P_8021Q
);
2804 e1000e_reset_adaptive(hw
);
2805 e1000_get_phy_info(hw
);
2807 if (!(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
2810 * speed up time to link by disabling smart power down, ignore
2811 * the return value of this function because there is nothing
2812 * different we would do if it failed
2814 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
2815 phy_data
&= ~IGP02E1000_PM_SPD
;
2816 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
2820 int e1000e_up(struct e1000_adapter
*adapter
)
2822 struct e1000_hw
*hw
= &adapter
->hw
;
2824 /* hardware has been reset, we need to reload some things */
2825 e1000_configure(adapter
);
2827 clear_bit(__E1000_DOWN
, &adapter
->state
);
2829 napi_enable(&adapter
->napi
);
2830 if (adapter
->msix_entries
)
2831 e1000_configure_msix(adapter
);
2832 e1000_irq_enable(adapter
);
2834 /* fire a link change interrupt to start the watchdog */
2835 ew32(ICS
, E1000_ICS_LSC
);
2839 void e1000e_down(struct e1000_adapter
*adapter
)
2841 struct net_device
*netdev
= adapter
->netdev
;
2842 struct e1000_hw
*hw
= &adapter
->hw
;
2846 * signal that we're down so the interrupt handler does not
2847 * reschedule our watchdog timer
2849 set_bit(__E1000_DOWN
, &adapter
->state
);
2851 /* disable receives in the hardware */
2853 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
2854 /* flush and sleep below */
2856 netif_tx_stop_all_queues(netdev
);
2858 /* disable transmits in the hardware */
2860 tctl
&= ~E1000_TCTL_EN
;
2862 /* flush both disables and wait for them to finish */
2866 napi_disable(&adapter
->napi
);
2867 e1000_irq_disable(adapter
);
2869 del_timer_sync(&adapter
->watchdog_timer
);
2870 del_timer_sync(&adapter
->phy_info_timer
);
2872 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2873 netif_carrier_off(netdev
);
2874 adapter
->link_speed
= 0;
2875 adapter
->link_duplex
= 0;
2877 if (!pci_channel_offline(adapter
->pdev
))
2878 e1000e_reset(adapter
);
2879 e1000_clean_tx_ring(adapter
);
2880 e1000_clean_rx_ring(adapter
);
2883 * TODO: for power management, we could drop the link and
2884 * pci_disable_device here.
2888 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
2891 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
2893 e1000e_down(adapter
);
2895 clear_bit(__E1000_RESETTING
, &adapter
->state
);
2899 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2900 * @adapter: board private structure to initialize
2902 * e1000_sw_init initializes the Adapter private data structure.
2903 * Fields are initialized based on PCI device information and
2904 * OS network device settings (MTU size).
2906 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
2908 struct net_device
*netdev
= adapter
->netdev
;
2910 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
2911 adapter
->rx_ps_bsize0
= 128;
2912 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2913 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
2915 e1000e_set_interrupt_capability(adapter
);
2917 if (e1000_alloc_queues(adapter
))
2920 /* Explicitly disable IRQ since the NIC can be in any state. */
2921 e1000_irq_disable(adapter
);
2923 set_bit(__E1000_DOWN
, &adapter
->state
);
2928 * e1000_intr_msi_test - Interrupt Handler
2929 * @irq: interrupt number
2930 * @data: pointer to a network interface device structure
2932 static irqreturn_t
e1000_intr_msi_test(int irq
, void *data
)
2934 struct net_device
*netdev
= data
;
2935 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2936 struct e1000_hw
*hw
= &adapter
->hw
;
2937 u32 icr
= er32(ICR
);
2939 e_dbg("%s: icr is %08X\n", netdev
->name
, icr
);
2940 if (icr
& E1000_ICR_RXSEQ
) {
2941 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
2949 * e1000_test_msi_interrupt - Returns 0 for successful test
2950 * @adapter: board private struct
2952 * code flow taken from tg3.c
2954 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
2956 struct net_device
*netdev
= adapter
->netdev
;
2957 struct e1000_hw
*hw
= &adapter
->hw
;
2960 /* poll_enable hasn't been called yet, so don't need disable */
2961 /* clear any pending events */
2964 /* free the real vector and request a test handler */
2965 e1000_free_irq(adapter
);
2966 e1000e_reset_interrupt_capability(adapter
);
2968 /* Assume that the test fails, if it succeeds then the test
2969 * MSI irq handler will unset this flag */
2970 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
2972 err
= pci_enable_msi(adapter
->pdev
);
2974 goto msi_test_failed
;
2976 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi_test
, 0,
2977 netdev
->name
, netdev
);
2979 pci_disable_msi(adapter
->pdev
);
2980 goto msi_test_failed
;
2985 e1000_irq_enable(adapter
);
2987 /* fire an unusual interrupt on the test handler */
2988 ew32(ICS
, E1000_ICS_RXSEQ
);
2992 e1000_irq_disable(adapter
);
2996 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
2997 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2999 e_info("MSI interrupt test failed!\n");
3002 free_irq(adapter
->pdev
->irq
, netdev
);
3003 pci_disable_msi(adapter
->pdev
);
3006 goto msi_test_failed
;
3008 /* okay so the test worked, restore settings */
3009 e_dbg("%s: MSI interrupt test succeeded!\n", netdev
->name
);
3011 e1000e_set_interrupt_capability(adapter
);
3012 e1000_request_irq(adapter
);
3017 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3018 * @adapter: board private struct
3020 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3022 static int e1000_test_msi(struct e1000_adapter
*adapter
)
3027 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
3030 /* disable SERR in case the MSI write causes a master abort */
3031 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
3032 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
3033 pci_cmd
& ~PCI_COMMAND_SERR
);
3035 err
= e1000_test_msi_interrupt(adapter
);
3037 /* restore previous setting of command word */
3038 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
3044 /* EIO means MSI test failed */
3048 /* back to INTx mode */
3049 e_warn("MSI interrupt test failed, using legacy interrupt.\n");
3051 e1000_free_irq(adapter
);
3053 err
= e1000_request_irq(adapter
);
3059 * e1000_open - Called when a network interface is made active
3060 * @netdev: network interface device structure
3062 * Returns 0 on success, negative value on failure
3064 * The open entry point is called when a network interface is made
3065 * active by the system (IFF_UP). At this point all resources needed
3066 * for transmit and receive operations are allocated, the interrupt
3067 * handler is registered with the OS, the watchdog timer is started,
3068 * and the stack is notified that the interface is ready.
3070 static int e1000_open(struct net_device
*netdev
)
3072 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3073 struct e1000_hw
*hw
= &adapter
->hw
;
3076 /* disallow open during test */
3077 if (test_bit(__E1000_TESTING
, &adapter
->state
))
3080 /* allocate transmit descriptors */
3081 err
= e1000e_setup_tx_resources(adapter
);
3085 /* allocate receive descriptors */
3086 err
= e1000e_setup_rx_resources(adapter
);
3090 e1000e_power_up_phy(adapter
);
3092 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3093 if ((adapter
->hw
.mng_cookie
.status
&
3094 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
3095 e1000_update_mng_vlan(adapter
);
3098 * If AMT is enabled, let the firmware know that the network
3099 * interface is now open
3101 if (adapter
->flags
& FLAG_HAS_AMT
)
3102 e1000_get_hw_control(adapter
);
3105 * before we allocate an interrupt, we must be ready to handle it.
3106 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3107 * as soon as we call pci_request_irq, so we have to setup our
3108 * clean_rx handler before we do so.
3110 e1000_configure(adapter
);
3112 err
= e1000_request_irq(adapter
);
3117 * Work around PCIe errata with MSI interrupts causing some chipsets to
3118 * ignore e1000e MSI messages, which means we need to test our MSI
3121 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
3122 err
= e1000_test_msi(adapter
);
3124 e_err("Interrupt allocation failed\n");
3129 /* From here on the code is the same as e1000e_up() */
3130 clear_bit(__E1000_DOWN
, &adapter
->state
);
3132 napi_enable(&adapter
->napi
);
3134 e1000_irq_enable(adapter
);
3136 netif_tx_start_all_queues(netdev
);
3138 /* fire a link status change interrupt to start the watchdog */
3139 ew32(ICS
, E1000_ICS_LSC
);
3144 e1000_release_hw_control(adapter
);
3145 e1000_power_down_phy(adapter
);
3146 e1000e_free_rx_resources(adapter
);
3148 e1000e_free_tx_resources(adapter
);
3150 e1000e_reset(adapter
);
3156 * e1000_close - Disables a network interface
3157 * @netdev: network interface device structure
3159 * Returns 0, this is not allowed to fail
3161 * The close entry point is called when an interface is de-activated
3162 * by the OS. The hardware is still under the drivers control, but
3163 * needs to be disabled. A global MAC reset is issued to stop the
3164 * hardware, and all transmit and receive resources are freed.
3166 static int e1000_close(struct net_device
*netdev
)
3168 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3170 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
3171 e1000e_down(adapter
);
3172 e1000_power_down_phy(adapter
);
3173 e1000_free_irq(adapter
);
3175 e1000e_free_tx_resources(adapter
);
3176 e1000e_free_rx_resources(adapter
);
3179 * kill manageability vlan ID if supported, but not if a vlan with
3180 * the same ID is registered on the host OS (let 8021q kill it)
3182 if ((adapter
->hw
.mng_cookie
.status
&
3183 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3185 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
3186 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3189 * If AMT is enabled, let the firmware know that the network
3190 * interface is now closed
3192 if (adapter
->flags
& FLAG_HAS_AMT
)
3193 e1000_release_hw_control(adapter
);
3198 * e1000_set_mac - Change the Ethernet Address of the NIC
3199 * @netdev: network interface device structure
3200 * @p: pointer to an address structure
3202 * Returns 0 on success, negative on failure
3204 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
3206 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3207 struct sockaddr
*addr
= p
;
3209 if (!is_valid_ether_addr(addr
->sa_data
))
3210 return -EADDRNOTAVAIL
;
3212 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3213 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3215 e1000e_rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
3217 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
3218 /* activate the work around */
3219 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
3222 * Hold a copy of the LAA in RAR[14] This is done so that
3223 * between the time RAR[0] gets clobbered and the time it
3224 * gets fixed (in e1000_watchdog), the actual LAA is in one
3225 * of the RARs and no incoming packets directed to this port
3226 * are dropped. Eventually the LAA will be in RAR[0] and
3229 e1000e_rar_set(&adapter
->hw
,
3230 adapter
->hw
.mac
.addr
,
3231 adapter
->hw
.mac
.rar_entry_count
- 1);
3238 * e1000e_update_phy_task - work thread to update phy
3239 * @work: pointer to our work struct
3241 * this worker thread exists because we must acquire a
3242 * semaphore to read the phy, which we could msleep while
3243 * waiting for it, and we can't msleep in a timer.
3245 static void e1000e_update_phy_task(struct work_struct
*work
)
3247 struct e1000_adapter
*adapter
= container_of(work
,
3248 struct e1000_adapter
, update_phy_task
);
3249 e1000_get_phy_info(&adapter
->hw
);
3253 * Need to wait a few seconds after link up to get diagnostic information from
3256 static void e1000_update_phy_info(unsigned long data
)
3258 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3259 schedule_work(&adapter
->update_phy_task
);
3263 * e1000e_update_stats - Update the board statistics counters
3264 * @adapter: board private structure
3266 void e1000e_update_stats(struct e1000_adapter
*adapter
)
3268 struct e1000_hw
*hw
= &adapter
->hw
;
3269 struct pci_dev
*pdev
= adapter
->pdev
;
3272 * Prevent stats update while adapter is being reset, or if the pci
3273 * connection is down.
3275 if (adapter
->link_speed
== 0)
3277 if (pci_channel_offline(pdev
))
3280 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3281 adapter
->stats
.gprc
+= er32(GPRC
);
3282 adapter
->stats
.gorc
+= er32(GORCL
);
3283 er32(GORCH
); /* Clear gorc */
3284 adapter
->stats
.bprc
+= er32(BPRC
);
3285 adapter
->stats
.mprc
+= er32(MPRC
);
3286 adapter
->stats
.roc
+= er32(ROC
);
3288 adapter
->stats
.mpc
+= er32(MPC
);
3289 adapter
->stats
.scc
+= er32(SCC
);
3290 adapter
->stats
.ecol
+= er32(ECOL
);
3291 adapter
->stats
.mcc
+= er32(MCC
);
3292 adapter
->stats
.latecol
+= er32(LATECOL
);
3293 adapter
->stats
.dc
+= er32(DC
);
3294 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3295 adapter
->stats
.xontxc
+= er32(XONTXC
);
3296 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3297 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3298 adapter
->stats
.gptc
+= er32(GPTC
);
3299 adapter
->stats
.gotc
+= er32(GOTCL
);
3300 er32(GOTCH
); /* Clear gotc */
3301 adapter
->stats
.rnbc
+= er32(RNBC
);
3302 adapter
->stats
.ruc
+= er32(RUC
);
3304 adapter
->stats
.mptc
+= er32(MPTC
);
3305 adapter
->stats
.bptc
+= er32(BPTC
);
3307 /* used for adaptive IFS */
3309 hw
->mac
.tx_packet_delta
= er32(TPT
);
3310 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3311 hw
->mac
.collision_delta
= er32(COLC
);
3312 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3314 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3315 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3316 if ((hw
->mac
.type
!= e1000_82574
) && (hw
->mac
.type
!= e1000_82583
))
3317 adapter
->stats
.tncrs
+= er32(TNCRS
);
3318 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3319 adapter
->stats
.tsctc
+= er32(TSCTC
);
3320 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3322 /* Fill out the OS statistics structure */
3323 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3324 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3329 * RLEC on some newer hardware can be incorrect so build
3330 * our own version based on RUC and ROC
3332 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3333 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3334 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3335 adapter
->stats
.cexterr
;
3336 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3338 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3339 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3340 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3343 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3344 adapter
->stats
.latecol
;
3345 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3346 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3347 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3349 /* Tx Dropped needs to be maintained elsewhere */
3351 /* Management Stats */
3352 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3353 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3354 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3358 * e1000_phy_read_status - Update the PHY register status snapshot
3359 * @adapter: board private structure
3361 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
3363 struct e1000_hw
*hw
= &adapter
->hw
;
3364 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
3367 if ((er32(STATUS
) & E1000_STATUS_LU
) &&
3368 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
3369 ret_val
= e1e_rphy(hw
, PHY_CONTROL
, &phy
->bmcr
);
3370 ret_val
|= e1e_rphy(hw
, PHY_STATUS
, &phy
->bmsr
);
3371 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_ADV
, &phy
->advertise
);
3372 ret_val
|= e1e_rphy(hw
, PHY_LP_ABILITY
, &phy
->lpa
);
3373 ret_val
|= e1e_rphy(hw
, PHY_AUTONEG_EXP
, &phy
->expansion
);
3374 ret_val
|= e1e_rphy(hw
, PHY_1000T_CTRL
, &phy
->ctrl1000
);
3375 ret_val
|= e1e_rphy(hw
, PHY_1000T_STATUS
, &phy
->stat1000
);
3376 ret_val
|= e1e_rphy(hw
, PHY_EXT_STATUS
, &phy
->estatus
);
3378 e_warn("Error reading PHY register\n");
3381 * Do not read PHY registers if link is not up
3382 * Set values to typical power-on defaults
3384 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
3385 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
3386 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
3388 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
3389 ADVERTISE_ALL
| ADVERTISE_CSMA
);
3391 phy
->expansion
= EXPANSION_ENABLENPAGE
;
3392 phy
->ctrl1000
= ADVERTISE_1000FULL
;
3394 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
3398 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
3400 struct e1000_hw
*hw
= &adapter
->hw
;
3401 u32 ctrl
= er32(CTRL
);
3403 /* Link status message must follow this format for user tools */
3404 printk(KERN_INFO
"e1000e: %s NIC Link is Up %d Mbps %s, "
3405 "Flow Control: %s\n",
3406 adapter
->netdev
->name
,
3407 adapter
->link_speed
,
3408 (adapter
->link_duplex
== FULL_DUPLEX
) ?
3409 "Full Duplex" : "Half Duplex",
3410 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
)) ?
3412 ((ctrl
& E1000_CTRL_RFCE
) ? "RX" :
3413 ((ctrl
& E1000_CTRL_TFCE
) ? "TX" : "None" )));
3416 bool e1000_has_link(struct e1000_adapter
*adapter
)
3418 struct e1000_hw
*hw
= &adapter
->hw
;
3419 bool link_active
= 0;
3423 * get_link_status is set on LSC (link status) interrupt or
3424 * Rx sequence error interrupt. get_link_status will stay
3425 * false until the check_for_link establishes link
3426 * for copper adapters ONLY
3428 switch (hw
->phy
.media_type
) {
3429 case e1000_media_type_copper
:
3430 if (hw
->mac
.get_link_status
) {
3431 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3432 link_active
= !hw
->mac
.get_link_status
;
3437 case e1000_media_type_fiber
:
3438 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3439 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
3441 case e1000_media_type_internal_serdes
:
3442 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
3443 link_active
= adapter
->hw
.mac
.serdes_has_link
;
3446 case e1000_media_type_unknown
:
3450 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
3451 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
3452 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
3453 e_info("Gigabit has been disabled, downgrading speed\n");
3459 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
3461 /* make sure the receive unit is started */
3462 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
3463 (adapter
->flags
& FLAG_RX_RESTART_NOW
)) {
3464 struct e1000_hw
*hw
= &adapter
->hw
;
3465 u32 rctl
= er32(RCTL
);
3466 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
3467 adapter
->flags
&= ~FLAG_RX_RESTART_NOW
;
3472 * e1000_watchdog - Timer Call-back
3473 * @data: pointer to adapter cast into an unsigned long
3475 static void e1000_watchdog(unsigned long data
)
3477 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
3479 /* Do the rest outside of interrupt context */
3480 schedule_work(&adapter
->watchdog_task
);
3482 /* TODO: make this use queue_delayed_work() */
3485 static void e1000_watchdog_task(struct work_struct
*work
)
3487 struct e1000_adapter
*adapter
= container_of(work
,
3488 struct e1000_adapter
, watchdog_task
);
3489 struct net_device
*netdev
= adapter
->netdev
;
3490 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3491 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
3492 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3493 struct e1000_hw
*hw
= &adapter
->hw
;
3497 link
= e1000_has_link(adapter
);
3498 if ((netif_carrier_ok(netdev
)) && link
) {
3499 e1000e_enable_receives(adapter
);
3503 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
3504 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
3505 e1000_update_mng_vlan(adapter
);
3508 if (!netif_carrier_ok(netdev
)) {
3510 /* update snapshot of PHY registers on LSC */
3511 e1000_phy_read_status(adapter
);
3512 mac
->ops
.get_link_up_info(&adapter
->hw
,
3513 &adapter
->link_speed
,
3514 &adapter
->link_duplex
);
3515 e1000_print_link_info(adapter
);
3517 * On supported PHYs, check for duplex mismatch only
3518 * if link has autonegotiated at 10/100 half
3520 if ((hw
->phy
.type
== e1000_phy_igp_3
||
3521 hw
->phy
.type
== e1000_phy_bm
) &&
3522 (hw
->mac
.autoneg
== true) &&
3523 (adapter
->link_speed
== SPEED_10
||
3524 adapter
->link_speed
== SPEED_100
) &&
3525 (adapter
->link_duplex
== HALF_DUPLEX
)) {
3528 e1e_rphy(hw
, PHY_AUTONEG_EXP
, &autoneg_exp
);
3530 if (!(autoneg_exp
& NWAY_ER_LP_NWAY_CAPS
))
3531 e_info("Autonegotiated half duplex but"
3532 " link partner cannot autoneg. "
3533 " Try forcing full duplex if "
3534 "link gets many collisions.\n");
3538 * tweak tx_queue_len according to speed/duplex
3539 * and adjust the timeout factor
3541 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
3542 adapter
->tx_timeout_factor
= 1;
3543 switch (adapter
->link_speed
) {
3546 netdev
->tx_queue_len
= 10;
3547 adapter
->tx_timeout_factor
= 16;
3551 netdev
->tx_queue_len
= 100;
3552 /* maybe add some timeout factor ? */
3557 * workaround: re-program speed mode bit after
3560 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
3563 tarc0
= er32(TARC(0));
3564 tarc0
&= ~SPEED_MODE_BIT
;
3565 ew32(TARC(0), tarc0
);
3569 * disable TSO for pcie and 10/100 speeds, to avoid
3570 * some hardware issues
3572 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
3573 switch (adapter
->link_speed
) {
3576 e_info("10/100 speed: disabling TSO\n");
3577 netdev
->features
&= ~NETIF_F_TSO
;
3578 netdev
->features
&= ~NETIF_F_TSO6
;
3581 netdev
->features
|= NETIF_F_TSO
;
3582 netdev
->features
|= NETIF_F_TSO6
;
3591 * enable transmits in the hardware, need to do this
3592 * after setting TARC(0)
3595 tctl
|= E1000_TCTL_EN
;
3599 * Perform any post-link-up configuration before
3600 * reporting link up.
3602 if (phy
->ops
.cfg_on_link_up
)
3603 phy
->ops
.cfg_on_link_up(hw
);
3605 netif_carrier_on(netdev
);
3606 netif_tx_wake_all_queues(netdev
);
3608 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3609 mod_timer(&adapter
->phy_info_timer
,
3610 round_jiffies(jiffies
+ 2 * HZ
));
3613 if (netif_carrier_ok(netdev
)) {
3614 adapter
->link_speed
= 0;
3615 adapter
->link_duplex
= 0;
3616 /* Link status message must follow this format */
3617 printk(KERN_INFO
"e1000e: %s NIC Link is Down\n",
3618 adapter
->netdev
->name
);
3619 netif_carrier_off(netdev
);
3620 netif_tx_stop_all_queues(netdev
);
3621 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3622 mod_timer(&adapter
->phy_info_timer
,
3623 round_jiffies(jiffies
+ 2 * HZ
));
3625 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
3626 schedule_work(&adapter
->reset_task
);
3631 e1000e_update_stats(adapter
);
3633 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
3634 adapter
->tpt_old
= adapter
->stats
.tpt
;
3635 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
3636 adapter
->colc_old
= adapter
->stats
.colc
;
3638 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
3639 adapter
->gorc_old
= adapter
->stats
.gorc
;
3640 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
3641 adapter
->gotc_old
= adapter
->stats
.gotc
;
3643 e1000e_update_adaptive(&adapter
->hw
);
3645 if (!netif_carrier_ok(netdev
)) {
3646 tx_pending
= (e1000_desc_unused(tx_ring
) + 1 <
3650 * We've lost link, so the controller stops DMA,
3651 * but we've got queued Tx work that's never going
3652 * to get done, so reset controller to flush Tx.
3653 * (Do the reset outside of interrupt context).
3655 adapter
->tx_timeout_count
++;
3656 schedule_work(&adapter
->reset_task
);
3660 /* Cause software interrupt to ensure Rx ring is cleaned */
3661 if (adapter
->msix_entries
)
3662 ew32(ICS
, adapter
->rx_ring
->ims_val
);
3664 ew32(ICS
, E1000_ICS_RXDMT0
);
3666 /* Force detection of hung controller every watchdog period */
3667 adapter
->detect_tx_hung
= 1;
3670 * With 82571 controllers, LAA may be overwritten due to controller
3671 * reset from the other port. Set the appropriate LAA in RAR[0]
3673 if (e1000e_get_laa_state_82571(hw
))
3674 e1000e_rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
3676 /* Reset the timer */
3677 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
3678 mod_timer(&adapter
->watchdog_timer
,
3679 round_jiffies(jiffies
+ 2 * HZ
));
3682 #define E1000_TX_FLAGS_CSUM 0x00000001
3683 #define E1000_TX_FLAGS_VLAN 0x00000002
3684 #define E1000_TX_FLAGS_TSO 0x00000004
3685 #define E1000_TX_FLAGS_IPV4 0x00000008
3686 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3687 #define E1000_TX_FLAGS_VLAN_SHIFT 16
3689 static int e1000_tso(struct e1000_adapter
*adapter
,
3690 struct sk_buff
*skb
)
3692 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3693 struct e1000_context_desc
*context_desc
;
3694 struct e1000_buffer
*buffer_info
;
3697 u16 ipcse
= 0, tucse
, mss
;
3698 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
3701 if (skb_is_gso(skb
)) {
3702 if (skb_header_cloned(skb
)) {
3703 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
3708 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3709 mss
= skb_shinfo(skb
)->gso_size
;
3710 if (skb
->protocol
== htons(ETH_P_IP
)) {
3711 struct iphdr
*iph
= ip_hdr(skb
);
3714 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
3718 cmd_length
= E1000_TXD_CMD_IP
;
3719 ipcse
= skb_transport_offset(skb
) - 1;
3720 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
3721 ipv6_hdr(skb
)->payload_len
= 0;
3722 tcp_hdr(skb
)->check
=
3723 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
3724 &ipv6_hdr(skb
)->daddr
,
3728 ipcss
= skb_network_offset(skb
);
3729 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
3730 tucss
= skb_transport_offset(skb
);
3731 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
3734 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
3735 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
3737 i
= tx_ring
->next_to_use
;
3738 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3739 buffer_info
= &tx_ring
->buffer_info
[i
];
3741 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
3742 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
3743 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
3744 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
3745 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
3746 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
3747 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
3748 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
3749 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
3751 buffer_info
->time_stamp
= jiffies
;
3752 buffer_info
->next_to_watch
= i
;
3755 if (i
== tx_ring
->count
)
3757 tx_ring
->next_to_use
= i
;
3765 static bool e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3767 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3768 struct e1000_context_desc
*context_desc
;
3769 struct e1000_buffer
*buffer_info
;
3772 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
3774 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
3777 switch (skb
->protocol
) {
3778 case cpu_to_be16(ETH_P_IP
):
3779 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3780 cmd_len
|= E1000_TXD_CMD_TCP
;
3782 case cpu_to_be16(ETH_P_IPV6
):
3783 /* XXX not handling all IPV6 headers */
3784 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3785 cmd_len
|= E1000_TXD_CMD_TCP
;
3788 if (unlikely(net_ratelimit()))
3789 e_warn("checksum_partial proto=%x!\n", skb
->protocol
);
3793 css
= skb_transport_offset(skb
);
3795 i
= tx_ring
->next_to_use
;
3796 buffer_info
= &tx_ring
->buffer_info
[i
];
3797 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3799 context_desc
->lower_setup
.ip_config
= 0;
3800 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3801 context_desc
->upper_setup
.tcp_fields
.tucso
=
3802 css
+ skb
->csum_offset
;
3803 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3804 context_desc
->tcp_seg_setup
.data
= 0;
3805 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
3807 buffer_info
->time_stamp
= jiffies
;
3808 buffer_info
->next_to_watch
= i
;
3811 if (i
== tx_ring
->count
)
3813 tx_ring
->next_to_use
= i
;
3818 #define E1000_MAX_PER_TXD 8192
3819 #define E1000_MAX_TXD_PWR 12
3821 static int e1000_tx_map(struct e1000_adapter
*adapter
,
3822 struct sk_buff
*skb
, unsigned int first
,
3823 unsigned int max_per_txd
, unsigned int nr_frags
,
3826 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3827 unsigned int len
= skb_headlen(skb
);
3828 unsigned int offset
, size
, count
= 0, i
;
3832 i
= tx_ring
->next_to_use
;
3834 if (skb_dma_map(&adapter
->pdev
->dev
, skb
, DMA_TO_DEVICE
)) {
3835 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
3836 adapter
->tx_dma_failed
++;
3841 map
= skb_shinfo(skb
)->dma_maps
[0];
3845 struct e1000_buffer
*buffer_info
= &tx_ring
->buffer_info
[i
];
3846 size
= min(len
, max_per_txd
);
3848 buffer_info
->length
= size
;
3849 /* set time_stamp *before* dma to help avoid a possible race */
3850 buffer_info
->time_stamp
= jiffies
;
3851 buffer_info
->dma
= map
+ offset
;
3852 buffer_info
->next_to_watch
= i
;
3858 if (i
== tx_ring
->count
)
3862 for (f
= 0; f
< nr_frags
; f
++) {
3863 struct skb_frag_struct
*frag
;
3865 frag
= &skb_shinfo(skb
)->frags
[f
];
3867 map
= skb_shinfo(skb
)->dma_maps
[f
+ 1];
3871 struct e1000_buffer
*buffer_info
;
3872 buffer_info
= &tx_ring
->buffer_info
[i
];
3873 size
= min(len
, max_per_txd
);
3875 buffer_info
->length
= size
;
3876 buffer_info
->time_stamp
= jiffies
;
3877 buffer_info
->dma
= map
+ offset
;
3878 buffer_info
->next_to_watch
= i
;
3885 if (i
== tx_ring
->count
)
3891 i
= tx_ring
->count
- 1;
3895 tx_ring
->buffer_info
[i
].skb
= skb
;
3896 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3902 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3903 int tx_flags
, int count
)
3905 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
3906 struct e1000_tx_desc
*tx_desc
= NULL
;
3907 struct e1000_buffer
*buffer_info
;
3908 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3911 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
3912 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3914 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3916 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
3917 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3920 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
3921 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3922 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3925 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
3926 txd_lower
|= E1000_TXD_CMD_VLE
;
3927 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3930 i
= tx_ring
->next_to_use
;
3933 buffer_info
= &tx_ring
->buffer_info
[i
];
3934 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3935 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3936 tx_desc
->lower
.data
=
3937 cpu_to_le32(txd_lower
| buffer_info
->length
);
3938 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3941 if (i
== tx_ring
->count
)
3945 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3948 * Force memory writes to complete before letting h/w
3949 * know there are new descriptors to fetch. (Only
3950 * applicable for weak-ordered memory model archs,
3955 tx_ring
->next_to_use
= i
;
3956 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3958 * we need this if more than one processor can write to our tail
3959 * at a time, it synchronizes IO on IA64/Altix systems
3964 #define MINIMUM_DHCP_PACKET_SIZE 282
3965 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3966 struct sk_buff
*skb
)
3968 struct e1000_hw
*hw
= &adapter
->hw
;
3971 if (vlan_tx_tag_present(skb
)) {
3972 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
)
3973 && (adapter
->hw
.mng_cookie
.status
&
3974 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
3978 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
3981 if (((struct ethhdr
*) skb
->data
)->h_proto
!= htons(ETH_P_IP
))
3985 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+14);
3988 if (ip
->protocol
!= IPPROTO_UDP
)
3991 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
3992 if (ntohs(udp
->dest
) != 67)
3995 offset
= (u8
*)udp
+ 8 - skb
->data
;
3996 length
= skb
->len
- offset
;
3997 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
4003 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4005 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4007 netif_stop_queue(netdev
);
4009 * Herbert's original patch had:
4010 * smp_mb__after_netif_stop_queue();
4011 * but since that doesn't exist yet, just open code it.
4016 * We need to check again in a case another CPU has just
4017 * made room available.
4019 if (e1000_desc_unused(adapter
->tx_ring
) < size
)
4023 netif_start_queue(netdev
);
4024 ++adapter
->restart_queue
;
4028 static int e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
4030 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4032 if (e1000_desc_unused(adapter
->tx_ring
) >= size
)
4034 return __e1000_maybe_stop_tx(netdev
, size
);
4037 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
4038 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
4040 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4041 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4043 unsigned int max_per_txd
= E1000_MAX_PER_TXD
;
4044 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
4045 unsigned int tx_flags
= 0;
4046 unsigned int len
= skb
->len
- skb
->data_len
;
4047 unsigned int nr_frags
;
4053 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
4054 dev_kfree_skb_any(skb
);
4055 return NETDEV_TX_OK
;
4058 if (skb
->len
<= 0) {
4059 dev_kfree_skb_any(skb
);
4060 return NETDEV_TX_OK
;
4063 mss
= skb_shinfo(skb
)->gso_size
;
4065 * The controller does a simple calculation to
4066 * make sure there is enough room in the FIFO before
4067 * initiating the DMA for each buffer. The calc is:
4068 * 4 = ceil(buffer len/mss). To make sure we don't
4069 * overrun the FIFO, adjust the max buffer len if mss
4074 max_per_txd
= min(mss
<< 2, max_per_txd
);
4075 max_txd_pwr
= fls(max_per_txd
) - 1;
4078 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
4079 * points to just header, pull a few bytes of payload from
4080 * frags into skb->data
4082 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
4084 * we do this workaround for ES2LAN, but it is un-necessary,
4085 * avoiding it could save a lot of cycles
4087 if (skb
->data_len
&& (hdr_len
== len
)) {
4088 unsigned int pull_size
;
4090 pull_size
= min((unsigned int)4, skb
->data_len
);
4091 if (!__pskb_pull_tail(skb
, pull_size
)) {
4092 e_err("__pskb_pull_tail failed.\n");
4093 dev_kfree_skb_any(skb
);
4094 return NETDEV_TX_OK
;
4096 len
= skb
->len
- skb
->data_len
;
4100 /* reserve a descriptor for the offload context */
4101 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
4105 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
4107 nr_frags
= skb_shinfo(skb
)->nr_frags
;
4108 for (f
= 0; f
< nr_frags
; f
++)
4109 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
4112 if (adapter
->hw
.mac
.tx_pkt_filtering
)
4113 e1000_transfer_dhcp_info(adapter
, skb
);
4116 * need: count + 2 desc gap to keep tail from touching
4117 * head, otherwise try next time
4119 if (e1000_maybe_stop_tx(netdev
, count
+ 2))
4120 return NETDEV_TX_BUSY
;
4122 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
4123 tx_flags
|= E1000_TX_FLAGS_VLAN
;
4124 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
4127 first
= tx_ring
->next_to_use
;
4129 tso
= e1000_tso(adapter
, skb
);
4131 dev_kfree_skb_any(skb
);
4132 return NETDEV_TX_OK
;
4136 tx_flags
|= E1000_TX_FLAGS_TSO
;
4137 else if (e1000_tx_csum(adapter
, skb
))
4138 tx_flags
|= E1000_TX_FLAGS_CSUM
;
4141 * Old method was to assume IPv4 packet by default if TSO was enabled.
4142 * 82571 hardware supports TSO capabilities for IPv6 as well...
4143 * no longer assume, we must.
4145 if (skb
->protocol
== htons(ETH_P_IP
))
4146 tx_flags
|= E1000_TX_FLAGS_IPV4
;
4148 count
= e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
);
4150 /* handle pci_map_single() error in e1000_tx_map */
4151 dev_kfree_skb_any(skb
);
4152 return NETDEV_TX_OK
;
4155 e1000_tx_queue(adapter
, tx_flags
, count
);
4157 netdev
->trans_start
= jiffies
;
4159 /* Make sure there is space in the ring for the next send. */
4160 e1000_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 2);
4162 return NETDEV_TX_OK
;
4166 * e1000_tx_timeout - Respond to a Tx Hang
4167 * @netdev: network interface device structure
4169 static void e1000_tx_timeout(struct net_device
*netdev
)
4171 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4173 /* Do the reset outside of interrupt context */
4174 adapter
->tx_timeout_count
++;
4175 schedule_work(&adapter
->reset_task
);
4178 static void e1000_reset_task(struct work_struct
*work
)
4180 struct e1000_adapter
*adapter
;
4181 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
4183 e1000e_reinit_locked(adapter
);
4187 * e1000_get_stats - Get System Network Statistics
4188 * @netdev: network interface device structure
4190 * Returns the address of the device statistics structure.
4191 * The statistics are actually updated from the timer callback.
4193 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
4195 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4197 /* only return the current stats */
4198 return &adapter
->net_stats
;
4202 * e1000_change_mtu - Change the Maximum Transfer Unit
4203 * @netdev: network interface device structure
4204 * @new_mtu: new value for maximum frame size
4206 * Returns 0 on success, negative on failure
4208 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
4210 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4211 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4213 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
4214 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
4215 e_err("Invalid MTU setting\n");
4219 /* Jumbo frame size limits */
4220 if (max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
4221 if (!(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
4222 e_err("Jumbo Frames not supported.\n");
4225 if (adapter
->hw
.phy
.type
== e1000_phy_ife
) {
4226 e_err("Jumbo Frames not supported.\n");
4231 #define MAX_STD_JUMBO_FRAME_SIZE 9234
4232 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
4233 e_err("MTU > 9216 not supported.\n");
4237 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4239 /* e1000e_down has a dependency on max_frame_size */
4240 adapter
->max_frame_size
= max_frame
;
4241 if (netif_running(netdev
))
4242 e1000e_down(adapter
);
4245 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
4246 * means we reserve 2 more, this pushes us to allocate from the next
4248 * i.e. RXBUFFER_2048 --> size-4096 slab
4249 * However with the new *_jumbo_rx* routines, jumbo receives will use
4253 if (max_frame
<= 256)
4254 adapter
->rx_buffer_len
= 256;
4255 else if (max_frame
<= 512)
4256 adapter
->rx_buffer_len
= 512;
4257 else if (max_frame
<= 1024)
4258 adapter
->rx_buffer_len
= 1024;
4259 else if (max_frame
<= 2048)
4260 adapter
->rx_buffer_len
= 2048;
4262 adapter
->rx_buffer_len
= 4096;
4264 /* adjust allocation if LPE protects us, and we aren't using SBP */
4265 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
4266 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
4267 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
4270 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
4271 netdev
->mtu
= new_mtu
;
4273 if (netif_running(netdev
))
4276 e1000e_reset(adapter
);
4278 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4283 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4286 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4287 struct mii_ioctl_data
*data
= if_mii(ifr
);
4289 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4294 data
->phy_id
= adapter
->hw
.phy
.addr
;
4297 if (!capable(CAP_NET_ADMIN
))
4299 switch (data
->reg_num
& 0x1F) {
4301 data
->val_out
= adapter
->phy_regs
.bmcr
;
4304 data
->val_out
= adapter
->phy_regs
.bmsr
;
4307 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
4310 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
4313 data
->val_out
= adapter
->phy_regs
.advertise
;
4316 data
->val_out
= adapter
->phy_regs
.lpa
;
4319 data
->val_out
= adapter
->phy_regs
.expansion
;
4322 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
4325 data
->val_out
= adapter
->phy_regs
.stat1000
;
4328 data
->val_out
= adapter
->phy_regs
.estatus
;
4341 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4347 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4353 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4355 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4356 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4357 struct e1000_hw
*hw
= &adapter
->hw
;
4358 u32 ctrl
, ctrl_ext
, rctl
, status
;
4359 u32 wufc
= adapter
->wol
;
4362 netif_device_detach(netdev
);
4364 if (netif_running(netdev
)) {
4365 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4366 e1000e_down(adapter
);
4367 e1000_free_irq(adapter
);
4369 e1000e_reset_interrupt_capability(adapter
);
4371 retval
= pci_save_state(pdev
);
4375 status
= er32(STATUS
);
4376 if (status
& E1000_STATUS_LU
)
4377 wufc
&= ~E1000_WUFC_LNKC
;
4380 e1000_setup_rctl(adapter
);
4381 e1000_set_multi(netdev
);
4383 /* turn on all-multi mode if wake on multicast is enabled */
4384 if (wufc
& E1000_WUFC_MC
) {
4386 rctl
|= E1000_RCTL_MPE
;
4391 /* advertise wake from D3Cold */
4392 #define E1000_CTRL_ADVD3WUC 0x00100000
4393 /* phy power management enable */
4394 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4395 ctrl
|= E1000_CTRL_ADVD3WUC
|
4396 E1000_CTRL_EN_PHY_PWR_MGMT
;
4399 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
4400 adapter
->hw
.phy
.media_type
==
4401 e1000_media_type_internal_serdes
) {
4402 /* keep the laser running in D3 */
4403 ctrl_ext
= er32(CTRL_EXT
);
4404 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4405 ew32(CTRL_EXT
, ctrl_ext
);
4408 if (adapter
->flags
& FLAG_IS_ICH
)
4409 e1000e_disable_gig_wol_ich8lan(&adapter
->hw
);
4411 /* Allow time for pending master requests to run */
4412 e1000e_disable_pcie_master(&adapter
->hw
);
4414 ew32(WUC
, E1000_WUC_PME_EN
);
4416 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4417 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4421 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4422 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4425 /* make sure adapter isn't asleep if manageability is enabled */
4426 if (adapter
->flags
& FLAG_MNG_PT_ENABLED
) {
4427 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4428 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4431 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
)
4432 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
4435 * Release control of h/w to f/w. If f/w is AMT enabled, this
4436 * would have already happened in close and is redundant.
4438 e1000_release_hw_control(adapter
);
4440 pci_disable_device(pdev
);
4443 * The pci-e switch on some quad port adapters will report a
4444 * correctable error when the MAC transitions from D0 to D3. To
4445 * prevent this we need to mask off the correctable errors on the
4446 * downstream port of the pci-e switch.
4448 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
4449 struct pci_dev
*us_dev
= pdev
->bus
->self
;
4450 int pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
4453 pci_read_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, &devctl
);
4454 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
,
4455 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
4457 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4459 pci_write_config_word(us_dev
, pos
+ PCI_EXP_DEVCTL
, devctl
);
4461 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4467 static void e1000e_disable_l1aspm(struct pci_dev
*pdev
)
4473 * 82573 workaround - disable L1 ASPM on mobile chipsets
4475 * L1 ASPM on various mobile (ich7) chipsets do not behave properly
4476 * resulting in lost data or garbage information on the pci-e link
4477 * level. This could result in (false) bad EEPROM checksum errors,
4478 * long ping times (up to 2s) or even a system freeze/hang.
4480 * Unfortunately this feature saves about 1W power consumption when
4483 pos
= pci_find_capability(pdev
, PCI_CAP_ID_EXP
);
4484 pci_read_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, &val
);
4486 dev_warn(&pdev
->dev
, "Disabling L1 ASPM\n");
4488 pci_write_config_word(pdev
, pos
+ PCI_EXP_LNKCTL
, val
);
4493 static int e1000_resume(struct pci_dev
*pdev
)
4495 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4496 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4497 struct e1000_hw
*hw
= &adapter
->hw
;
4500 pci_set_power_state(pdev
, PCI_D0
);
4501 pci_restore_state(pdev
);
4502 e1000e_disable_l1aspm(pdev
);
4504 err
= pci_enable_device_mem(pdev
);
4507 "Cannot enable PCI device from suspend\n");
4511 /* AER (Advanced Error Reporting) hooks */
4512 err
= pci_enable_pcie_error_reporting(pdev
);
4514 dev_err(&pdev
->dev
, "pci_enable_pcie_error_reporting failed "
4516 /* non-fatal, continue */
4519 pci_set_master(pdev
);
4521 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4522 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4524 e1000e_set_interrupt_capability(adapter
);
4525 if (netif_running(netdev
)) {
4526 err
= e1000_request_irq(adapter
);
4531 e1000e_power_up_phy(adapter
);
4532 e1000e_reset(adapter
);
4535 e1000_init_manageability(adapter
);
4537 if (netif_running(netdev
))
4540 netif_device_attach(netdev
);
4543 * If the controller has AMT, do not set DRV_LOAD until the interface
4544 * is up. For all other cases, let the f/w know that the h/w is now
4545 * under the control of the driver.
4547 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4548 e1000_get_hw_control(adapter
);
4554 static void e1000_shutdown(struct pci_dev
*pdev
)
4556 e1000_suspend(pdev
, PMSG_SUSPEND
);
4559 #ifdef CONFIG_NET_POLL_CONTROLLER
4561 * Polling 'interrupt' - used by things like netconsole to send skbs
4562 * without having to re-enable interrupts. It's not called while
4563 * the interrupt routine is executing.
4565 static void e1000_netpoll(struct net_device
*netdev
)
4567 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4569 disable_irq(adapter
->pdev
->irq
);
4570 e1000_intr(adapter
->pdev
->irq
, netdev
);
4572 enable_irq(adapter
->pdev
->irq
);
4577 * e1000_io_error_detected - called when PCI error is detected
4578 * @pdev: Pointer to PCI device
4579 * @state: The current pci connection state
4581 * This function is called after a PCI bus error affecting
4582 * this device has been detected.
4584 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4585 pci_channel_state_t state
)
4587 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4588 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4590 netif_device_detach(netdev
);
4592 if (netif_running(netdev
))
4593 e1000e_down(adapter
);
4594 pci_disable_device(pdev
);
4596 /* Request a slot slot reset. */
4597 return PCI_ERS_RESULT_NEED_RESET
;
4601 * e1000_io_slot_reset - called after the pci bus has been reset.
4602 * @pdev: Pointer to PCI device
4604 * Restart the card from scratch, as if from a cold-boot. Implementation
4605 * resembles the first-half of the e1000_resume routine.
4607 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4609 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4610 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4611 struct e1000_hw
*hw
= &adapter
->hw
;
4613 pci_ers_result_t result
;
4615 e1000e_disable_l1aspm(pdev
);
4616 err
= pci_enable_device_mem(pdev
);
4619 "Cannot re-enable PCI device after reset.\n");
4620 result
= PCI_ERS_RESULT_DISCONNECT
;
4622 pci_set_master(pdev
);
4623 pci_restore_state(pdev
);
4625 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4626 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4628 e1000e_reset(adapter
);
4630 result
= PCI_ERS_RESULT_RECOVERED
;
4633 pci_cleanup_aer_uncorrect_error_status(pdev
);
4639 * e1000_io_resume - called when traffic can start flowing again.
4640 * @pdev: Pointer to PCI device
4642 * This callback is called when the error recovery driver tells us that
4643 * its OK to resume normal operation. Implementation resembles the
4644 * second-half of the e1000_resume routine.
4646 static void e1000_io_resume(struct pci_dev
*pdev
)
4648 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4649 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4651 e1000_init_manageability(adapter
);
4653 if (netif_running(netdev
)) {
4654 if (e1000e_up(adapter
)) {
4656 "can't bring device back up after reset\n");
4661 netif_device_attach(netdev
);
4664 * If the controller has AMT, do not set DRV_LOAD until the interface
4665 * is up. For all other cases, let the f/w know that the h/w is now
4666 * under the control of the driver.
4668 if (!(adapter
->flags
& FLAG_HAS_AMT
))
4669 e1000_get_hw_control(adapter
);
4673 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
4675 struct e1000_hw
*hw
= &adapter
->hw
;
4676 struct net_device
*netdev
= adapter
->netdev
;
4679 /* print bus type/speed/width info */
4680 e_info("(PCI Express:2.5GB/s:%s) %pM\n",
4682 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
4686 e_info("Intel(R) PRO/%s Network Connection\n",
4687 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
4688 e1000e_read_pba_num(hw
, &pba_num
);
4689 e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
4690 hw
->mac
.type
, hw
->phy
.type
, (pba_num
>> 8), (pba_num
& 0xff));
4693 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
4695 struct e1000_hw
*hw
= &adapter
->hw
;
4699 if (hw
->mac
.type
!= e1000_82573
)
4702 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
4703 if (!ret_val
&& (!(le16_to_cpu(buf
) & (1 << 0)))) {
4704 /* Deep Smart Power Down (DSPD) */
4705 dev_warn(&adapter
->pdev
->dev
,
4706 "Warning: detected DSPD enabled in EEPROM\n");
4709 ret_val
= e1000_read_nvm(hw
, NVM_INIT_3GIO_3
, 1, &buf
);
4710 if (!ret_val
&& (le16_to_cpu(buf
) & (3 << 2))) {
4712 dev_warn(&adapter
->pdev
->dev
,
4713 "Warning: detected ASPM enabled in EEPROM\n");
4717 static const struct net_device_ops e1000e_netdev_ops
= {
4718 .ndo_open
= e1000_open
,
4719 .ndo_stop
= e1000_close
,
4720 .ndo_start_xmit
= e1000_xmit_frame
,
4721 .ndo_get_stats
= e1000_get_stats
,
4722 .ndo_set_multicast_list
= e1000_set_multi
,
4723 .ndo_set_mac_address
= e1000_set_mac
,
4724 .ndo_change_mtu
= e1000_change_mtu
,
4725 .ndo_do_ioctl
= e1000_ioctl
,
4726 .ndo_tx_timeout
= e1000_tx_timeout
,
4727 .ndo_validate_addr
= eth_validate_addr
,
4729 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
4730 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
4731 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
4732 #ifdef CONFIG_NET_POLL_CONTROLLER
4733 .ndo_poll_controller
= e1000_netpoll
,
4738 * e1000_probe - Device Initialization Routine
4739 * @pdev: PCI device information struct
4740 * @ent: entry in e1000_pci_tbl
4742 * Returns 0 on success, negative on failure
4744 * e1000_probe initializes an adapter identified by a pci_dev structure.
4745 * The OS initialization, configuring of the adapter private structure,
4746 * and a hardware reset occur.
4748 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
4749 const struct pci_device_id
*ent
)
4751 struct net_device
*netdev
;
4752 struct e1000_adapter
*adapter
;
4753 struct e1000_hw
*hw
;
4754 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
4755 resource_size_t mmio_start
, mmio_len
;
4756 resource_size_t flash_start
, flash_len
;
4758 static int cards_found
;
4759 int i
, err
, pci_using_dac
;
4760 u16 eeprom_data
= 0;
4761 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
4763 e1000e_disable_l1aspm(pdev
);
4765 err
= pci_enable_device_mem(pdev
);
4770 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
4772 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
4776 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
4778 err
= pci_set_consistent_dma_mask(pdev
,
4781 dev_err(&pdev
->dev
, "No usable DMA "
4782 "configuration, aborting\n");
4788 err
= pci_request_selected_regions_exclusive(pdev
,
4789 pci_select_bars(pdev
, IORESOURCE_MEM
),
4790 e1000e_driver_name
);
4794 pci_set_master(pdev
);
4795 /* PCI config space info */
4796 err
= pci_save_state(pdev
);
4798 goto err_alloc_etherdev
;
4801 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
4803 goto err_alloc_etherdev
;
4805 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
4807 pci_set_drvdata(pdev
, netdev
);
4808 adapter
= netdev_priv(netdev
);
4810 adapter
->netdev
= netdev
;
4811 adapter
->pdev
= pdev
;
4813 adapter
->pba
= ei
->pba
;
4814 adapter
->flags
= ei
->flags
;
4815 adapter
->flags2
= ei
->flags2
;
4816 adapter
->hw
.adapter
= adapter
;
4817 adapter
->hw
.mac
.type
= ei
->mac
;
4818 adapter
->msg_enable
= (1 << NETIF_MSG_DRV
| NETIF_MSG_PROBE
) - 1;
4820 mmio_start
= pci_resource_start(pdev
, 0);
4821 mmio_len
= pci_resource_len(pdev
, 0);
4824 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
4825 if (!adapter
->hw
.hw_addr
)
4828 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
4829 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
4830 flash_start
= pci_resource_start(pdev
, 1);
4831 flash_len
= pci_resource_len(pdev
, 1);
4832 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
4833 if (!adapter
->hw
.flash_address
)
4837 /* construct the net_device struct */
4838 netdev
->netdev_ops
= &e1000e_netdev_ops
;
4839 e1000e_set_ethtool_ops(netdev
);
4840 netdev
->watchdog_timeo
= 5 * HZ
;
4841 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
4842 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
4844 netdev
->mem_start
= mmio_start
;
4845 netdev
->mem_end
= mmio_start
+ mmio_len
;
4847 adapter
->bd_number
= cards_found
++;
4849 e1000e_check_options(adapter
);
4851 /* setup adapter struct */
4852 err
= e1000_sw_init(adapter
);
4858 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
4859 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
4860 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
4862 err
= ei
->get_variants(adapter
);
4866 if ((adapter
->flags
& FLAG_IS_ICH
) &&
4867 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
4868 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
4870 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
4872 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
4874 /* Copper options */
4875 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
4876 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
4877 adapter
->hw
.phy
.disable_polarity_correction
= 0;
4878 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
4881 if (e1000_check_reset_block(&adapter
->hw
))
4882 e_info("PHY reset is blocked due to SOL/IDER session.\n");
4884 netdev
->features
= NETIF_F_SG
|
4886 NETIF_F_HW_VLAN_TX
|
4889 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
4890 netdev
->features
|= NETIF_F_HW_VLAN_FILTER
;
4892 netdev
->features
|= NETIF_F_TSO
;
4893 netdev
->features
|= NETIF_F_TSO6
;
4895 netdev
->vlan_features
|= NETIF_F_TSO
;
4896 netdev
->vlan_features
|= NETIF_F_TSO6
;
4897 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
4898 netdev
->vlan_features
|= NETIF_F_SG
;
4901 netdev
->features
|= NETIF_F_HIGHDMA
;
4903 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
4904 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
4907 * before reading the NVM, reset the controller to
4908 * put the device in a known good starting state
4910 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
4913 * systems with ASPM and others may see the checksum fail on the first
4914 * attempt. Let's give it a few tries
4917 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
4920 e_err("The NVM Checksum Is Not Valid\n");
4926 e1000_eeprom_checks(adapter
);
4928 /* copy the MAC address out of the NVM */
4929 if (e1000e_read_mac_addr(&adapter
->hw
))
4930 e_err("NVM Read Error while reading MAC address\n");
4932 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4933 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
4935 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
4936 e_err("Invalid MAC Address: %pM\n", netdev
->perm_addr
);
4941 init_timer(&adapter
->watchdog_timer
);
4942 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
4943 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
4945 init_timer(&adapter
->phy_info_timer
);
4946 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
4947 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
4949 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
4950 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
4951 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
4952 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
4954 /* Initialize link parameters. User can change them with ethtool */
4955 adapter
->hw
.mac
.autoneg
= 1;
4956 adapter
->fc_autoneg
= 1;
4957 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
4958 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
4959 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
4961 /* ring size defaults */
4962 adapter
->rx_ring
->count
= 256;
4963 adapter
->tx_ring
->count
= 256;
4966 * Initial Wake on LAN setting - If APM wake is enabled in
4967 * the EEPROM, enable the ACPI Magic Packet filter
4969 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
4970 /* APME bit in EEPROM is mapped to WUC.APME */
4971 eeprom_data
= er32(WUC
);
4972 eeprom_apme_mask
= E1000_WUC_APME
;
4973 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
4974 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
4975 (adapter
->hw
.bus
.func
== 1))
4976 e1000_read_nvm(&adapter
->hw
,
4977 NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
4979 e1000_read_nvm(&adapter
->hw
,
4980 NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
4983 /* fetch WoL from EEPROM */
4984 if (eeprom_data
& eeprom_apme_mask
)
4985 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
4988 * now that we have the eeprom settings, apply the special cases
4989 * where the eeprom may be wrong or the board simply won't support
4990 * wake on lan on a particular port
4992 if (!(adapter
->flags
& FLAG_HAS_WOL
))
4993 adapter
->eeprom_wol
= 0;
4995 /* initialize the wol settings based on the eeprom settings */
4996 adapter
->wol
= adapter
->eeprom_wol
;
4997 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
4999 /* save off EEPROM version number */
5000 e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
5002 /* reset the hardware with the new settings */
5003 e1000e_reset(adapter
);
5006 * If the controller has AMT, do not set DRV_LOAD until the interface
5007 * is up. For all other cases, let the f/w know that the h/w is now
5008 * under the control of the driver.
5010 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5011 e1000_get_hw_control(adapter
);
5013 /* tell the stack to leave us alone until e1000_open() is called */
5014 netif_carrier_off(netdev
);
5015 netif_tx_stop_all_queues(netdev
);
5017 strcpy(netdev
->name
, "eth%d");
5018 err
= register_netdev(netdev
);
5022 e1000_print_device_info(adapter
);
5027 if (!(adapter
->flags
& FLAG_HAS_AMT
))
5028 e1000_release_hw_control(adapter
);
5030 if (!e1000_check_reset_block(&adapter
->hw
))
5031 e1000_phy_hw_reset(&adapter
->hw
);
5034 kfree(adapter
->tx_ring
);
5035 kfree(adapter
->rx_ring
);
5037 if (adapter
->hw
.flash_address
)
5038 iounmap(adapter
->hw
.flash_address
);
5039 e1000e_reset_interrupt_capability(adapter
);
5041 iounmap(adapter
->hw
.hw_addr
);
5043 free_netdev(netdev
);
5045 pci_release_selected_regions(pdev
,
5046 pci_select_bars(pdev
, IORESOURCE_MEM
));
5049 pci_disable_device(pdev
);
5054 * e1000_remove - Device Removal Routine
5055 * @pdev: PCI device information struct
5057 * e1000_remove is called by the PCI subsystem to alert the driver
5058 * that it should release a PCI device. The could be caused by a
5059 * Hot-Plug event, or because the driver is going to be removed from
5062 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
5064 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5065 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5069 * flush_scheduled work may reschedule our watchdog task, so
5070 * explicitly disable watchdog tasks from being rescheduled
5072 set_bit(__E1000_DOWN
, &adapter
->state
);
5073 del_timer_sync(&adapter
->watchdog_timer
);
5074 del_timer_sync(&adapter
->phy_info_timer
);
5076 flush_scheduled_work();
5079 * Release control of h/w to f/w. If f/w is AMT enabled, this
5080 * would have already happened in close and is redundant.
5082 e1000_release_hw_control(adapter
);
5084 unregister_netdev(netdev
);
5086 if (!e1000_check_reset_block(&adapter
->hw
))
5087 e1000_phy_hw_reset(&adapter
->hw
);
5089 e1000e_reset_interrupt_capability(adapter
);
5090 kfree(adapter
->tx_ring
);
5091 kfree(adapter
->rx_ring
);
5093 iounmap(adapter
->hw
.hw_addr
);
5094 if (adapter
->hw
.flash_address
)
5095 iounmap(adapter
->hw
.flash_address
);
5096 pci_release_selected_regions(pdev
,
5097 pci_select_bars(pdev
, IORESOURCE_MEM
));
5099 free_netdev(netdev
);
5102 err
= pci_disable_pcie_error_reporting(pdev
);
5105 "pci_disable_pcie_error_reporting failed 0x%x\n", err
);
5107 pci_disable_device(pdev
);
5110 /* PCI Error Recovery (ERS) */
5111 static struct pci_error_handlers e1000_err_handler
= {
5112 .error_detected
= e1000_io_error_detected
,
5113 .slot_reset
= e1000_io_slot_reset
,
5114 .resume
= e1000_io_resume
,
5117 static struct pci_device_id e1000_pci_tbl
[] = {
5118 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
5119 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
5120 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
5121 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
), board_82571
},
5122 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
5123 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
5124 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
5125 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
5126 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
5128 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
5129 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
5130 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
5131 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
5133 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
5134 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
5135 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
5137 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
5138 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
5140 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
5141 board_80003es2lan
},
5142 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
5143 board_80003es2lan
},
5144 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
5145 board_80003es2lan
},
5146 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
5147 board_80003es2lan
},
5149 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
5150 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
5151 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
5152 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
5153 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
5154 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
5155 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
5157 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
5158 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
5159 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
5160 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
5161 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
5162 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
5163 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
5164 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
5165 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
5167 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
5168 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
5169 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
5171 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
5172 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
5174 { } /* terminate list */
5176 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
5178 /* PCI Device API Driver */
5179 static struct pci_driver e1000_driver
= {
5180 .name
= e1000e_driver_name
,
5181 .id_table
= e1000_pci_tbl
,
5182 .probe
= e1000_probe
,
5183 .remove
= __devexit_p(e1000_remove
),
5185 /* Power Management Hooks */
5186 .suspend
= e1000_suspend
,
5187 .resume
= e1000_resume
,
5189 .shutdown
= e1000_shutdown
,
5190 .err_handler
= &e1000_err_handler
5194 * e1000_init_module - Driver Registration Routine
5196 * e1000_init_module is the first routine called when the driver is
5197 * loaded. All it does is register with the PCI subsystem.
5199 static int __init
e1000_init_module(void)
5202 printk(KERN_INFO
"%s: Intel(R) PRO/1000 Network Driver - %s\n",
5203 e1000e_driver_name
, e1000e_driver_version
);
5204 printk(KERN_INFO
"%s: Copyright (c) 1999-2008 Intel Corporation.\n",
5205 e1000e_driver_name
);
5206 ret
= pci_register_driver(&e1000_driver
);
5207 pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
,
5208 PM_QOS_DEFAULT_VALUE
);
5212 module_init(e1000_init_module
);
5215 * e1000_exit_module - Driver Exit Cleanup Routine
5217 * e1000_exit_module is called just before the driver is removed
5220 static void __exit
e1000_exit_module(void)
5222 pci_unregister_driver(&e1000_driver
);
5223 pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY
, e1000e_driver_name
);
5225 module_exit(e1000_exit_module
);
5228 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
5229 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
5230 MODULE_LICENSE("GPL");
5231 MODULE_VERSION(DRV_VERSION
);