1 /*******************************************************************************
3 Intel(R) 82576 Virtual Function Linux driver
4 Copyright(c) 2009 - 2012 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 #include <linux/module.h>
31 #include <linux/types.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/vmalloc.h>
35 #include <linux/pagemap.h>
36 #include <linux/delay.h>
37 #include <linux/netdevice.h>
38 #include <linux/tcp.h>
39 #include <linux/ipv6.h>
40 #include <linux/slab.h>
41 #include <net/checksum.h>
42 #include <net/ip6_checksum.h>
43 #include <linux/mii.h>
44 #include <linux/ethtool.h>
45 #include <linux/if_vlan.h>
46 #include <linux/prefetch.h>
50 #define DRV_VERSION "2.0.1-k"
51 char igbvf_driver_name
[] = "igbvf";
52 const char igbvf_driver_version
[] = DRV_VERSION
;
53 static const char igbvf_driver_string
[] =
54 "Intel(R) Gigabit Virtual Function Network Driver";
55 static const char igbvf_copyright
[] =
56 "Copyright (c) 2009 - 2012 Intel Corporation.";
58 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
59 static int debug
= -1;
60 module_param(debug
, int, 0);
61 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
63 static int igbvf_poll(struct napi_struct
*napi
, int budget
);
64 static void igbvf_reset(struct igbvf_adapter
*);
65 static void igbvf_set_interrupt_capability(struct igbvf_adapter
*);
66 static void igbvf_reset_interrupt_capability(struct igbvf_adapter
*);
68 static struct igbvf_info igbvf_vf_info
= {
72 .init_ops
= e1000_init_function_pointers_vf
,
75 static struct igbvf_info igbvf_i350_vf_info
= {
76 .mac
= e1000_vfadapt_i350
,
79 .init_ops
= e1000_init_function_pointers_vf
,
82 static const struct igbvf_info
*igbvf_info_tbl
[] = {
83 [board_vf
] = &igbvf_vf_info
,
84 [board_i350_vf
] = &igbvf_i350_vf_info
,
88 * igbvf_desc_unused - calculate if we have unused descriptors
90 static int igbvf_desc_unused(struct igbvf_ring
*ring
)
92 if (ring
->next_to_clean
> ring
->next_to_use
)
93 return ring
->next_to_clean
- ring
->next_to_use
- 1;
95 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
99 * igbvf_receive_skb - helper function to handle Rx indications
100 * @adapter: board private structure
101 * @status: descriptor status field as written by hardware
102 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
103 * @skb: pointer to sk_buff to be indicated to stack
105 static void igbvf_receive_skb(struct igbvf_adapter
*adapter
,
106 struct net_device
*netdev
,
108 u32 status
, u16 vlan
)
110 if (status
& E1000_RXD_STAT_VP
) {
111 u16 vid
= le16_to_cpu(vlan
) & E1000_RXD_SPC_VLAN_MASK
;
112 if (test_bit(vid
, adapter
->active_vlans
))
113 __vlan_hwaccel_put_tag(skb
, vid
);
115 netif_receive_skb(skb
);
118 static inline void igbvf_rx_checksum_adv(struct igbvf_adapter
*adapter
,
119 u32 status_err
, struct sk_buff
*skb
)
121 skb_checksum_none_assert(skb
);
123 /* Ignore Checksum bit is set or checksum is disabled through ethtool */
124 if ((status_err
& E1000_RXD_STAT_IXSM
) ||
125 (adapter
->flags
& IGBVF_FLAG_RX_CSUM_DISABLED
))
128 /* TCP/UDP checksum error bit is set */
130 (E1000_RXDEXT_STATERR_TCPE
| E1000_RXDEXT_STATERR_IPE
)) {
131 /* let the stack verify checksum errors */
132 adapter
->hw_csum_err
++;
136 /* It must be a TCP or UDP packet with a valid checksum */
137 if (status_err
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
))
138 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
140 adapter
->hw_csum_good
++;
144 * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split
145 * @rx_ring: address of ring structure to repopulate
146 * @cleaned_count: number of buffers to repopulate
148 static void igbvf_alloc_rx_buffers(struct igbvf_ring
*rx_ring
,
151 struct igbvf_adapter
*adapter
= rx_ring
->adapter
;
152 struct net_device
*netdev
= adapter
->netdev
;
153 struct pci_dev
*pdev
= adapter
->pdev
;
154 union e1000_adv_rx_desc
*rx_desc
;
155 struct igbvf_buffer
*buffer_info
;
160 i
= rx_ring
->next_to_use
;
161 buffer_info
= &rx_ring
->buffer_info
[i
];
163 if (adapter
->rx_ps_hdr_size
)
164 bufsz
= adapter
->rx_ps_hdr_size
;
166 bufsz
= adapter
->rx_buffer_len
;
168 while (cleaned_count
--) {
169 rx_desc
= IGBVF_RX_DESC_ADV(*rx_ring
, i
);
171 if (adapter
->rx_ps_hdr_size
&& !buffer_info
->page_dma
) {
172 if (!buffer_info
->page
) {
173 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
174 if (!buffer_info
->page
) {
175 adapter
->alloc_rx_buff_failed
++;
178 buffer_info
->page_offset
= 0;
180 buffer_info
->page_offset
^= PAGE_SIZE
/ 2;
182 buffer_info
->page_dma
=
183 dma_map_page(&pdev
->dev
, buffer_info
->page
,
184 buffer_info
->page_offset
,
189 if (!buffer_info
->skb
) {
190 skb
= netdev_alloc_skb_ip_align(netdev
, bufsz
);
192 adapter
->alloc_rx_buff_failed
++;
196 buffer_info
->skb
= skb
;
197 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
201 /* Refresh the desc even if buffer_addrs didn't change because
202 * each write-back erases this info. */
203 if (adapter
->rx_ps_hdr_size
) {
204 rx_desc
->read
.pkt_addr
=
205 cpu_to_le64(buffer_info
->page_dma
);
206 rx_desc
->read
.hdr_addr
= cpu_to_le64(buffer_info
->dma
);
208 rx_desc
->read
.pkt_addr
=
209 cpu_to_le64(buffer_info
->dma
);
210 rx_desc
->read
.hdr_addr
= 0;
214 if (i
== rx_ring
->count
)
216 buffer_info
= &rx_ring
->buffer_info
[i
];
220 if (rx_ring
->next_to_use
!= i
) {
221 rx_ring
->next_to_use
= i
;
223 i
= (rx_ring
->count
- 1);
227 /* Force memory writes to complete before letting h/w
228 * know there are new descriptors to fetch. (Only
229 * applicable for weak-ordered memory model archs,
232 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
237 * igbvf_clean_rx_irq - Send received data up the network stack; legacy
238 * @adapter: board private structure
240 * the return value indicates whether actual cleaning was done, there
241 * is no guarantee that everything was cleaned
243 static bool igbvf_clean_rx_irq(struct igbvf_adapter
*adapter
,
244 int *work_done
, int work_to_do
)
246 struct igbvf_ring
*rx_ring
= adapter
->rx_ring
;
247 struct net_device
*netdev
= adapter
->netdev
;
248 struct pci_dev
*pdev
= adapter
->pdev
;
249 union e1000_adv_rx_desc
*rx_desc
, *next_rxd
;
250 struct igbvf_buffer
*buffer_info
, *next_buffer
;
252 bool cleaned
= false;
253 int cleaned_count
= 0;
254 unsigned int total_bytes
= 0, total_packets
= 0;
256 u32 length
, hlen
, staterr
;
258 i
= rx_ring
->next_to_clean
;
259 rx_desc
= IGBVF_RX_DESC_ADV(*rx_ring
, i
);
260 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
262 while (staterr
& E1000_RXD_STAT_DD
) {
263 if (*work_done
>= work_to_do
)
266 rmb(); /* read descriptor and rx_buffer_info after status DD */
268 buffer_info
= &rx_ring
->buffer_info
[i
];
270 /* HW will not DMA in data larger than the given buffer, even
271 * if it parses the (NFS, of course) header to be larger. In
272 * that case, it fills the header buffer and spills the rest
275 hlen
= (le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hs_rss
.hdr_info
) &
276 E1000_RXDADV_HDRBUFLEN_MASK
) >> E1000_RXDADV_HDRBUFLEN_SHIFT
;
277 if (hlen
> adapter
->rx_ps_hdr_size
)
278 hlen
= adapter
->rx_ps_hdr_size
;
280 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
284 skb
= buffer_info
->skb
;
285 prefetch(skb
->data
- NET_IP_ALIGN
);
286 buffer_info
->skb
= NULL
;
287 if (!adapter
->rx_ps_hdr_size
) {
288 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
289 adapter
->rx_buffer_len
,
291 buffer_info
->dma
= 0;
292 skb_put(skb
, length
);
296 if (!skb_shinfo(skb
)->nr_frags
) {
297 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
298 adapter
->rx_ps_hdr_size
,
304 dma_unmap_page(&pdev
->dev
, buffer_info
->page_dma
,
307 buffer_info
->page_dma
= 0;
309 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
,
311 buffer_info
->page_offset
,
314 if ((adapter
->rx_buffer_len
> (PAGE_SIZE
/ 2)) ||
315 (page_count(buffer_info
->page
) != 1))
316 buffer_info
->page
= NULL
;
318 get_page(buffer_info
->page
);
321 skb
->data_len
+= length
;
322 skb
->truesize
+= PAGE_SIZE
/ 2;
326 if (i
== rx_ring
->count
)
328 next_rxd
= IGBVF_RX_DESC_ADV(*rx_ring
, i
);
330 next_buffer
= &rx_ring
->buffer_info
[i
];
332 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
333 buffer_info
->skb
= next_buffer
->skb
;
334 buffer_info
->dma
= next_buffer
->dma
;
335 next_buffer
->skb
= skb
;
336 next_buffer
->dma
= 0;
340 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
341 dev_kfree_skb_irq(skb
);
345 total_bytes
+= skb
->len
;
348 igbvf_rx_checksum_adv(adapter
, staterr
, skb
);
350 skb
->protocol
= eth_type_trans(skb
, netdev
);
352 igbvf_receive_skb(adapter
, netdev
, skb
, staterr
,
353 rx_desc
->wb
.upper
.vlan
);
356 rx_desc
->wb
.upper
.status_error
= 0;
358 /* return some buffers to hardware, one at a time is too slow */
359 if (cleaned_count
>= IGBVF_RX_BUFFER_WRITE
) {
360 igbvf_alloc_rx_buffers(rx_ring
, cleaned_count
);
364 /* use prefetched values */
366 buffer_info
= next_buffer
;
368 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
371 rx_ring
->next_to_clean
= i
;
372 cleaned_count
= igbvf_desc_unused(rx_ring
);
375 igbvf_alloc_rx_buffers(rx_ring
, cleaned_count
);
377 adapter
->total_rx_packets
+= total_packets
;
378 adapter
->total_rx_bytes
+= total_bytes
;
379 adapter
->net_stats
.rx_bytes
+= total_bytes
;
380 adapter
->net_stats
.rx_packets
+= total_packets
;
384 static void igbvf_put_txbuf(struct igbvf_adapter
*adapter
,
385 struct igbvf_buffer
*buffer_info
)
387 if (buffer_info
->dma
) {
388 if (buffer_info
->mapped_as_page
)
389 dma_unmap_page(&adapter
->pdev
->dev
,
394 dma_unmap_single(&adapter
->pdev
->dev
,
398 buffer_info
->dma
= 0;
400 if (buffer_info
->skb
) {
401 dev_kfree_skb_any(buffer_info
->skb
);
402 buffer_info
->skb
= NULL
;
404 buffer_info
->time_stamp
= 0;
408 * igbvf_setup_tx_resources - allocate Tx resources (Descriptors)
409 * @adapter: board private structure
411 * Return 0 on success, negative on failure
413 int igbvf_setup_tx_resources(struct igbvf_adapter
*adapter
,
414 struct igbvf_ring
*tx_ring
)
416 struct pci_dev
*pdev
= adapter
->pdev
;
419 size
= sizeof(struct igbvf_buffer
) * tx_ring
->count
;
420 tx_ring
->buffer_info
= vzalloc(size
);
421 if (!tx_ring
->buffer_info
)
424 /* round up to nearest 4K */
425 tx_ring
->size
= tx_ring
->count
* sizeof(union e1000_adv_tx_desc
);
426 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
428 tx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, tx_ring
->size
,
429 &tx_ring
->dma
, GFP_KERNEL
);
434 tx_ring
->adapter
= adapter
;
435 tx_ring
->next_to_use
= 0;
436 tx_ring
->next_to_clean
= 0;
440 vfree(tx_ring
->buffer_info
);
441 dev_err(&adapter
->pdev
->dev
,
442 "Unable to allocate memory for the transmit descriptor ring\n");
447 * igbvf_setup_rx_resources - allocate Rx resources (Descriptors)
448 * @adapter: board private structure
450 * Returns 0 on success, negative on failure
452 int igbvf_setup_rx_resources(struct igbvf_adapter
*adapter
,
453 struct igbvf_ring
*rx_ring
)
455 struct pci_dev
*pdev
= adapter
->pdev
;
458 size
= sizeof(struct igbvf_buffer
) * rx_ring
->count
;
459 rx_ring
->buffer_info
= vzalloc(size
);
460 if (!rx_ring
->buffer_info
)
463 desc_len
= sizeof(union e1000_adv_rx_desc
);
465 /* Round up to nearest 4K */
466 rx_ring
->size
= rx_ring
->count
* desc_len
;
467 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
469 rx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, rx_ring
->size
,
470 &rx_ring
->dma
, GFP_KERNEL
);
475 rx_ring
->next_to_clean
= 0;
476 rx_ring
->next_to_use
= 0;
478 rx_ring
->adapter
= adapter
;
483 vfree(rx_ring
->buffer_info
);
484 rx_ring
->buffer_info
= NULL
;
485 dev_err(&adapter
->pdev
->dev
,
486 "Unable to allocate memory for the receive descriptor ring\n");
491 * igbvf_clean_tx_ring - Free Tx Buffers
492 * @tx_ring: ring to be cleaned
494 static void igbvf_clean_tx_ring(struct igbvf_ring
*tx_ring
)
496 struct igbvf_adapter
*adapter
= tx_ring
->adapter
;
497 struct igbvf_buffer
*buffer_info
;
501 if (!tx_ring
->buffer_info
)
504 /* Free all the Tx ring sk_buffs */
505 for (i
= 0; i
< tx_ring
->count
; i
++) {
506 buffer_info
= &tx_ring
->buffer_info
[i
];
507 igbvf_put_txbuf(adapter
, buffer_info
);
510 size
= sizeof(struct igbvf_buffer
) * tx_ring
->count
;
511 memset(tx_ring
->buffer_info
, 0, size
);
513 /* Zero out the descriptor ring */
514 memset(tx_ring
->desc
, 0, tx_ring
->size
);
516 tx_ring
->next_to_use
= 0;
517 tx_ring
->next_to_clean
= 0;
519 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
520 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
524 * igbvf_free_tx_resources - Free Tx Resources per Queue
525 * @tx_ring: ring to free resources from
527 * Free all transmit software resources
529 void igbvf_free_tx_resources(struct igbvf_ring
*tx_ring
)
531 struct pci_dev
*pdev
= tx_ring
->adapter
->pdev
;
533 igbvf_clean_tx_ring(tx_ring
);
535 vfree(tx_ring
->buffer_info
);
536 tx_ring
->buffer_info
= NULL
;
538 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
541 tx_ring
->desc
= NULL
;
545 * igbvf_clean_rx_ring - Free Rx Buffers per Queue
546 * @adapter: board private structure
548 static void igbvf_clean_rx_ring(struct igbvf_ring
*rx_ring
)
550 struct igbvf_adapter
*adapter
= rx_ring
->adapter
;
551 struct igbvf_buffer
*buffer_info
;
552 struct pci_dev
*pdev
= adapter
->pdev
;
556 if (!rx_ring
->buffer_info
)
559 /* Free all the Rx ring sk_buffs */
560 for (i
= 0; i
< rx_ring
->count
; i
++) {
561 buffer_info
= &rx_ring
->buffer_info
[i
];
562 if (buffer_info
->dma
) {
563 if (adapter
->rx_ps_hdr_size
){
564 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
565 adapter
->rx_ps_hdr_size
,
568 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
569 adapter
->rx_buffer_len
,
572 buffer_info
->dma
= 0;
575 if (buffer_info
->skb
) {
576 dev_kfree_skb(buffer_info
->skb
);
577 buffer_info
->skb
= NULL
;
580 if (buffer_info
->page
) {
581 if (buffer_info
->page_dma
)
582 dma_unmap_page(&pdev
->dev
,
583 buffer_info
->page_dma
,
586 put_page(buffer_info
->page
);
587 buffer_info
->page
= NULL
;
588 buffer_info
->page_dma
= 0;
589 buffer_info
->page_offset
= 0;
593 size
= sizeof(struct igbvf_buffer
) * rx_ring
->count
;
594 memset(rx_ring
->buffer_info
, 0, size
);
596 /* Zero out the descriptor ring */
597 memset(rx_ring
->desc
, 0, rx_ring
->size
);
599 rx_ring
->next_to_clean
= 0;
600 rx_ring
->next_to_use
= 0;
602 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
603 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
607 * igbvf_free_rx_resources - Free Rx Resources
608 * @rx_ring: ring to clean the resources from
610 * Free all receive software resources
613 void igbvf_free_rx_resources(struct igbvf_ring
*rx_ring
)
615 struct pci_dev
*pdev
= rx_ring
->adapter
->pdev
;
617 igbvf_clean_rx_ring(rx_ring
);
619 vfree(rx_ring
->buffer_info
);
620 rx_ring
->buffer_info
= NULL
;
622 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
624 rx_ring
->desc
= NULL
;
628 * igbvf_update_itr - update the dynamic ITR value based on statistics
629 * @adapter: pointer to adapter
630 * @itr_setting: current adapter->itr
631 * @packets: the number of packets during this measurement interval
632 * @bytes: the number of bytes during this measurement interval
634 * Stores a new ITR value based on packets and byte
635 * counts during the last interrupt. The advantage of per interrupt
636 * computation is faster updates and more accurate ITR for the current
637 * traffic pattern. Constants in this function were computed
638 * based on theoretical maximum wire speed and thresholds were set based
639 * on testing data as well as attempting to minimize response time
640 * while increasing bulk throughput.
642 static enum latency_range
igbvf_update_itr(struct igbvf_adapter
*adapter
,
643 enum latency_range itr_setting
,
644 int packets
, int bytes
)
646 enum latency_range retval
= itr_setting
;
649 goto update_itr_done
;
651 switch (itr_setting
) {
653 /* handle TSO and jumbo frames */
654 if (bytes
/packets
> 8000)
655 retval
= bulk_latency
;
656 else if ((packets
< 5) && (bytes
> 512))
657 retval
= low_latency
;
659 case low_latency
: /* 50 usec aka 20000 ints/s */
661 /* this if handles the TSO accounting */
662 if (bytes
/packets
> 8000)
663 retval
= bulk_latency
;
664 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
665 retval
= bulk_latency
;
666 else if ((packets
> 35))
667 retval
= lowest_latency
;
668 } else if (bytes
/packets
> 2000) {
669 retval
= bulk_latency
;
670 } else if (packets
<= 2 && bytes
< 512) {
671 retval
= lowest_latency
;
674 case bulk_latency
: /* 250 usec aka 4000 ints/s */
677 retval
= low_latency
;
678 } else if (bytes
< 6000) {
679 retval
= low_latency
;
690 static int igbvf_range_to_itr(enum latency_range current_range
)
694 switch (current_range
) {
695 /* counts and packets in update_itr are dependent on these numbers */
697 new_itr
= IGBVF_70K_ITR
;
700 new_itr
= IGBVF_20K_ITR
;
703 new_itr
= IGBVF_4K_ITR
;
706 new_itr
= IGBVF_START_ITR
;
712 static void igbvf_set_itr(struct igbvf_adapter
*adapter
)
716 adapter
->tx_ring
->itr_range
=
717 igbvf_update_itr(adapter
,
718 adapter
->tx_ring
->itr_val
,
719 adapter
->total_tx_packets
,
720 adapter
->total_tx_bytes
);
722 /* conservative mode (itr 3) eliminates the lowest_latency setting */
723 if (adapter
->requested_itr
== 3 &&
724 adapter
->tx_ring
->itr_range
== lowest_latency
)
725 adapter
->tx_ring
->itr_range
= low_latency
;
727 new_itr
= igbvf_range_to_itr(adapter
->tx_ring
->itr_range
);
730 if (new_itr
!= adapter
->tx_ring
->itr_val
) {
731 u32 current_itr
= adapter
->tx_ring
->itr_val
;
733 * this attempts to bias the interrupt rate towards Bulk
734 * by adding intermediate steps when interrupt rate is
737 new_itr
= new_itr
> current_itr
?
738 min(current_itr
+ (new_itr
>> 2), new_itr
) :
740 adapter
->tx_ring
->itr_val
= new_itr
;
742 adapter
->tx_ring
->set_itr
= 1;
745 adapter
->rx_ring
->itr_range
=
746 igbvf_update_itr(adapter
, adapter
->rx_ring
->itr_val
,
747 adapter
->total_rx_packets
,
748 adapter
->total_rx_bytes
);
749 if (adapter
->requested_itr
== 3 &&
750 adapter
->rx_ring
->itr_range
== lowest_latency
)
751 adapter
->rx_ring
->itr_range
= low_latency
;
753 new_itr
= igbvf_range_to_itr(adapter
->rx_ring
->itr_range
);
755 if (new_itr
!= adapter
->rx_ring
->itr_val
) {
756 u32 current_itr
= adapter
->rx_ring
->itr_val
;
757 new_itr
= new_itr
> current_itr
?
758 min(current_itr
+ (new_itr
>> 2), new_itr
) :
760 adapter
->rx_ring
->itr_val
= new_itr
;
762 adapter
->rx_ring
->set_itr
= 1;
767 * igbvf_clean_tx_irq - Reclaim resources after transmit completes
768 * @adapter: board private structure
769 * returns true if ring is completely cleaned
771 static bool igbvf_clean_tx_irq(struct igbvf_ring
*tx_ring
)
773 struct igbvf_adapter
*adapter
= tx_ring
->adapter
;
774 struct net_device
*netdev
= adapter
->netdev
;
775 struct igbvf_buffer
*buffer_info
;
777 union e1000_adv_tx_desc
*tx_desc
, *eop_desc
;
778 unsigned int total_bytes
= 0, total_packets
= 0;
779 unsigned int i
, eop
, count
= 0;
780 bool cleaned
= false;
782 i
= tx_ring
->next_to_clean
;
783 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
784 eop_desc
= IGBVF_TX_DESC_ADV(*tx_ring
, eop
);
786 while ((eop_desc
->wb
.status
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
787 (count
< tx_ring
->count
)) {
788 rmb(); /* read buffer_info after eop_desc status */
789 for (cleaned
= false; !cleaned
; count
++) {
790 tx_desc
= IGBVF_TX_DESC_ADV(*tx_ring
, i
);
791 buffer_info
= &tx_ring
->buffer_info
[i
];
792 cleaned
= (i
== eop
);
793 skb
= buffer_info
->skb
;
796 unsigned int segs
, bytecount
;
798 /* gso_segs is currently only valid for tcp */
799 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
800 /* multiply data chunks by size of headers */
801 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
803 total_packets
+= segs
;
804 total_bytes
+= bytecount
;
807 igbvf_put_txbuf(adapter
, buffer_info
);
808 tx_desc
->wb
.status
= 0;
811 if (i
== tx_ring
->count
)
814 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
815 eop_desc
= IGBVF_TX_DESC_ADV(*tx_ring
, eop
);
818 tx_ring
->next_to_clean
= i
;
820 if (unlikely(count
&&
821 netif_carrier_ok(netdev
) &&
822 igbvf_desc_unused(tx_ring
) >= IGBVF_TX_QUEUE_WAKE
)) {
823 /* Make sure that anybody stopping the queue after this
824 * sees the new next_to_clean.
827 if (netif_queue_stopped(netdev
) &&
828 !(test_bit(__IGBVF_DOWN
, &adapter
->state
))) {
829 netif_wake_queue(netdev
);
830 ++adapter
->restart_queue
;
834 adapter
->net_stats
.tx_bytes
+= total_bytes
;
835 adapter
->net_stats
.tx_packets
+= total_packets
;
836 return count
< tx_ring
->count
;
839 static irqreturn_t
igbvf_msix_other(int irq
, void *data
)
841 struct net_device
*netdev
= data
;
842 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
843 struct e1000_hw
*hw
= &adapter
->hw
;
845 adapter
->int_counter1
++;
847 netif_carrier_off(netdev
);
848 hw
->mac
.get_link_status
= 1;
849 if (!test_bit(__IGBVF_DOWN
, &adapter
->state
))
850 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
852 ew32(EIMS
, adapter
->eims_other
);
857 static irqreturn_t
igbvf_intr_msix_tx(int irq
, void *data
)
859 struct net_device
*netdev
= data
;
860 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
861 struct e1000_hw
*hw
= &adapter
->hw
;
862 struct igbvf_ring
*tx_ring
= adapter
->tx_ring
;
864 if (tx_ring
->set_itr
) {
865 writel(tx_ring
->itr_val
,
866 adapter
->hw
.hw_addr
+ tx_ring
->itr_register
);
867 adapter
->tx_ring
->set_itr
= 0;
870 adapter
->total_tx_bytes
= 0;
871 adapter
->total_tx_packets
= 0;
873 /* auto mask will automatically reenable the interrupt when we write
875 if (!igbvf_clean_tx_irq(tx_ring
))
876 /* Ring was not completely cleaned, so fire another interrupt */
877 ew32(EICS
, tx_ring
->eims_value
);
879 ew32(EIMS
, tx_ring
->eims_value
);
884 static irqreturn_t
igbvf_intr_msix_rx(int irq
, void *data
)
886 struct net_device
*netdev
= data
;
887 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
889 adapter
->int_counter0
++;
891 /* Write the ITR value calculated at the end of the
892 * previous interrupt.
894 if (adapter
->rx_ring
->set_itr
) {
895 writel(adapter
->rx_ring
->itr_val
,
896 adapter
->hw
.hw_addr
+ adapter
->rx_ring
->itr_register
);
897 adapter
->rx_ring
->set_itr
= 0;
900 if (napi_schedule_prep(&adapter
->rx_ring
->napi
)) {
901 adapter
->total_rx_bytes
= 0;
902 adapter
->total_rx_packets
= 0;
903 __napi_schedule(&adapter
->rx_ring
->napi
);
909 #define IGBVF_NO_QUEUE -1
911 static void igbvf_assign_vector(struct igbvf_adapter
*adapter
, int rx_queue
,
912 int tx_queue
, int msix_vector
)
914 struct e1000_hw
*hw
= &adapter
->hw
;
917 /* 82576 uses a table-based method for assigning vectors.
918 Each queue has a single entry in the table to which we write
919 a vector number along with a "valid" bit. Sadly, the layout
920 of the table is somewhat counterintuitive. */
921 if (rx_queue
> IGBVF_NO_QUEUE
) {
922 index
= (rx_queue
>> 1);
923 ivar
= array_er32(IVAR0
, index
);
924 if (rx_queue
& 0x1) {
925 /* vector goes into third byte of register */
926 ivar
= ivar
& 0xFF00FFFF;
927 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 16;
929 /* vector goes into low byte of register */
930 ivar
= ivar
& 0xFFFFFF00;
931 ivar
|= msix_vector
| E1000_IVAR_VALID
;
933 adapter
->rx_ring
[rx_queue
].eims_value
= 1 << msix_vector
;
934 array_ew32(IVAR0
, index
, ivar
);
936 if (tx_queue
> IGBVF_NO_QUEUE
) {
937 index
= (tx_queue
>> 1);
938 ivar
= array_er32(IVAR0
, index
);
939 if (tx_queue
& 0x1) {
940 /* vector goes into high byte of register */
941 ivar
= ivar
& 0x00FFFFFF;
942 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 24;
944 /* vector goes into second byte of register */
945 ivar
= ivar
& 0xFFFF00FF;
946 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 8;
948 adapter
->tx_ring
[tx_queue
].eims_value
= 1 << msix_vector
;
949 array_ew32(IVAR0
, index
, ivar
);
954 * igbvf_configure_msix - Configure MSI-X hardware
956 * igbvf_configure_msix sets up the hardware to properly
957 * generate MSI-X interrupts.
959 static void igbvf_configure_msix(struct igbvf_adapter
*adapter
)
962 struct e1000_hw
*hw
= &adapter
->hw
;
963 struct igbvf_ring
*tx_ring
= adapter
->tx_ring
;
964 struct igbvf_ring
*rx_ring
= adapter
->rx_ring
;
967 adapter
->eims_enable_mask
= 0;
969 igbvf_assign_vector(adapter
, IGBVF_NO_QUEUE
, 0, vector
++);
970 adapter
->eims_enable_mask
|= tx_ring
->eims_value
;
971 writel(tx_ring
->itr_val
, hw
->hw_addr
+ tx_ring
->itr_register
);
972 igbvf_assign_vector(adapter
, 0, IGBVF_NO_QUEUE
, vector
++);
973 adapter
->eims_enable_mask
|= rx_ring
->eims_value
;
974 writel(rx_ring
->itr_val
, hw
->hw_addr
+ rx_ring
->itr_register
);
976 /* set vector for other causes, i.e. link changes */
978 tmp
= (vector
++ | E1000_IVAR_VALID
);
980 ew32(IVAR_MISC
, tmp
);
982 adapter
->eims_enable_mask
= (1 << (vector
)) - 1;
983 adapter
->eims_other
= 1 << (vector
- 1);
987 static void igbvf_reset_interrupt_capability(struct igbvf_adapter
*adapter
)
989 if (adapter
->msix_entries
) {
990 pci_disable_msix(adapter
->pdev
);
991 kfree(adapter
->msix_entries
);
992 adapter
->msix_entries
= NULL
;
997 * igbvf_set_interrupt_capability - set MSI or MSI-X if supported
999 * Attempt to configure interrupts using the best available
1000 * capabilities of the hardware and kernel.
1002 static void igbvf_set_interrupt_capability(struct igbvf_adapter
*adapter
)
1007 /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */
1008 adapter
->msix_entries
= kcalloc(3, sizeof(struct msix_entry
),
1010 if (adapter
->msix_entries
) {
1011 for (i
= 0; i
< 3; i
++)
1012 adapter
->msix_entries
[i
].entry
= i
;
1014 err
= pci_enable_msix(adapter
->pdev
,
1015 adapter
->msix_entries
, 3);
1020 dev_err(&adapter
->pdev
->dev
,
1021 "Failed to initialize MSI-X interrupts.\n");
1022 igbvf_reset_interrupt_capability(adapter
);
1027 * igbvf_request_msix - Initialize MSI-X interrupts
1029 * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the
1032 static int igbvf_request_msix(struct igbvf_adapter
*adapter
)
1034 struct net_device
*netdev
= adapter
->netdev
;
1035 int err
= 0, vector
= 0;
1037 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5)) {
1038 sprintf(adapter
->tx_ring
->name
, "%s-tx-0", netdev
->name
);
1039 sprintf(adapter
->rx_ring
->name
, "%s-rx-0", netdev
->name
);
1041 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1042 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
1045 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1046 igbvf_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
1051 adapter
->tx_ring
->itr_register
= E1000_EITR(vector
);
1052 adapter
->tx_ring
->itr_val
= adapter
->current_itr
;
1055 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1056 igbvf_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
1061 adapter
->rx_ring
->itr_register
= E1000_EITR(vector
);
1062 adapter
->rx_ring
->itr_val
= adapter
->current_itr
;
1065 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1066 igbvf_msix_other
, 0, netdev
->name
, netdev
);
1070 igbvf_configure_msix(adapter
);
1077 * igbvf_alloc_queues - Allocate memory for all rings
1078 * @adapter: board private structure to initialize
1080 static int __devinit
igbvf_alloc_queues(struct igbvf_adapter
*adapter
)
1082 struct net_device
*netdev
= adapter
->netdev
;
1084 adapter
->tx_ring
= kzalloc(sizeof(struct igbvf_ring
), GFP_KERNEL
);
1085 if (!adapter
->tx_ring
)
1088 adapter
->rx_ring
= kzalloc(sizeof(struct igbvf_ring
), GFP_KERNEL
);
1089 if (!adapter
->rx_ring
) {
1090 kfree(adapter
->tx_ring
);
1094 netif_napi_add(netdev
, &adapter
->rx_ring
->napi
, igbvf_poll
, 64);
1100 * igbvf_request_irq - initialize interrupts
1102 * Attempts to configure interrupts using the best available
1103 * capabilities of the hardware and kernel.
1105 static int igbvf_request_irq(struct igbvf_adapter
*adapter
)
1109 /* igbvf supports msi-x only */
1110 if (adapter
->msix_entries
)
1111 err
= igbvf_request_msix(adapter
);
1116 dev_err(&adapter
->pdev
->dev
,
1117 "Unable to allocate interrupt, Error: %d\n", err
);
1122 static void igbvf_free_irq(struct igbvf_adapter
*adapter
)
1124 struct net_device
*netdev
= adapter
->netdev
;
1127 if (adapter
->msix_entries
) {
1128 for (vector
= 0; vector
< 3; vector
++)
1129 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
1134 * igbvf_irq_disable - Mask off interrupt generation on the NIC
1136 static void igbvf_irq_disable(struct igbvf_adapter
*adapter
)
1138 struct e1000_hw
*hw
= &adapter
->hw
;
1142 if (adapter
->msix_entries
)
1147 * igbvf_irq_enable - Enable default interrupt generation settings
1149 static void igbvf_irq_enable(struct igbvf_adapter
*adapter
)
1151 struct e1000_hw
*hw
= &adapter
->hw
;
1153 ew32(EIAC
, adapter
->eims_enable_mask
);
1154 ew32(EIAM
, adapter
->eims_enable_mask
);
1155 ew32(EIMS
, adapter
->eims_enable_mask
);
1159 * igbvf_poll - NAPI Rx polling callback
1160 * @napi: struct associated with this polling callback
1161 * @budget: amount of packets driver is allowed to process this poll
1163 static int igbvf_poll(struct napi_struct
*napi
, int budget
)
1165 struct igbvf_ring
*rx_ring
= container_of(napi
, struct igbvf_ring
, napi
);
1166 struct igbvf_adapter
*adapter
= rx_ring
->adapter
;
1167 struct e1000_hw
*hw
= &adapter
->hw
;
1170 igbvf_clean_rx_irq(adapter
, &work_done
, budget
);
1172 /* If not enough Rx work done, exit the polling mode */
1173 if (work_done
< budget
) {
1174 napi_complete(napi
);
1176 if (adapter
->requested_itr
& 3)
1177 igbvf_set_itr(adapter
);
1179 if (!test_bit(__IGBVF_DOWN
, &adapter
->state
))
1180 ew32(EIMS
, adapter
->rx_ring
->eims_value
);
1187 * igbvf_set_rlpml - set receive large packet maximum length
1188 * @adapter: board private structure
1190 * Configure the maximum size of packets that will be received
1192 static void igbvf_set_rlpml(struct igbvf_adapter
*adapter
)
1195 struct e1000_hw
*hw
= &adapter
->hw
;
1197 max_frame_size
= adapter
->max_frame_size
+ VLAN_TAG_SIZE
;
1198 e1000_rlpml_set_vf(hw
, max_frame_size
);
1201 static int igbvf_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1203 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
1204 struct e1000_hw
*hw
= &adapter
->hw
;
1206 if (hw
->mac
.ops
.set_vfta(hw
, vid
, true)) {
1207 dev_err(&adapter
->pdev
->dev
, "Failed to add vlan id %d\n", vid
);
1210 set_bit(vid
, adapter
->active_vlans
);
1214 static int igbvf_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1216 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
1217 struct e1000_hw
*hw
= &adapter
->hw
;
1219 if (hw
->mac
.ops
.set_vfta(hw
, vid
, false)) {
1220 dev_err(&adapter
->pdev
->dev
,
1221 "Failed to remove vlan id %d\n", vid
);
1224 clear_bit(vid
, adapter
->active_vlans
);
1228 static void igbvf_restore_vlan(struct igbvf_adapter
*adapter
)
1232 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
1233 igbvf_vlan_rx_add_vid(adapter
->netdev
, vid
);
1237 * igbvf_configure_tx - Configure Transmit Unit after Reset
1238 * @adapter: board private structure
1240 * Configure the Tx unit of the MAC after a reset.
1242 static void igbvf_configure_tx(struct igbvf_adapter
*adapter
)
1244 struct e1000_hw
*hw
= &adapter
->hw
;
1245 struct igbvf_ring
*tx_ring
= adapter
->tx_ring
;
1247 u32 txdctl
, dca_txctrl
;
1249 /* disable transmits */
1250 txdctl
= er32(TXDCTL(0));
1251 ew32(TXDCTL(0), txdctl
& ~E1000_TXDCTL_QUEUE_ENABLE
);
1255 /* Setup the HW Tx Head and Tail descriptor pointers */
1256 ew32(TDLEN(0), tx_ring
->count
* sizeof(union e1000_adv_tx_desc
));
1257 tdba
= tx_ring
->dma
;
1258 ew32(TDBAL(0), (tdba
& DMA_BIT_MASK(32)));
1259 ew32(TDBAH(0), (tdba
>> 32));
1262 tx_ring
->head
= E1000_TDH(0);
1263 tx_ring
->tail
= E1000_TDT(0);
1265 /* Turn off Relaxed Ordering on head write-backs. The writebacks
1266 * MUST be delivered in order or it will completely screw up
1269 dca_txctrl
= er32(DCA_TXCTRL(0));
1270 dca_txctrl
&= ~E1000_DCA_TXCTRL_TX_WB_RO_EN
;
1271 ew32(DCA_TXCTRL(0), dca_txctrl
);
1273 /* enable transmits */
1274 txdctl
|= E1000_TXDCTL_QUEUE_ENABLE
;
1275 ew32(TXDCTL(0), txdctl
);
1277 /* Setup Transmit Descriptor Settings for eop descriptor */
1278 adapter
->txd_cmd
= E1000_ADVTXD_DCMD_EOP
| E1000_ADVTXD_DCMD_IFCS
;
1280 /* enable Report Status bit */
1281 adapter
->txd_cmd
|= E1000_ADVTXD_DCMD_RS
;
1285 * igbvf_setup_srrctl - configure the receive control registers
1286 * @adapter: Board private structure
1288 static void igbvf_setup_srrctl(struct igbvf_adapter
*adapter
)
1290 struct e1000_hw
*hw
= &adapter
->hw
;
1293 srrctl
&= ~(E1000_SRRCTL_DESCTYPE_MASK
|
1294 E1000_SRRCTL_BSIZEHDR_MASK
|
1295 E1000_SRRCTL_BSIZEPKT_MASK
);
1297 /* Enable queue drop to avoid head of line blocking */
1298 srrctl
|= E1000_SRRCTL_DROP_EN
;
1300 /* Setup buffer sizes */
1301 srrctl
|= ALIGN(adapter
->rx_buffer_len
, 1024) >>
1302 E1000_SRRCTL_BSIZEPKT_SHIFT
;
1304 if (adapter
->rx_buffer_len
< 2048) {
1305 adapter
->rx_ps_hdr_size
= 0;
1306 srrctl
|= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1308 adapter
->rx_ps_hdr_size
= 128;
1309 srrctl
|= adapter
->rx_ps_hdr_size
<<
1310 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT
;
1311 srrctl
|= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
1314 ew32(SRRCTL(0), srrctl
);
1318 * igbvf_configure_rx - Configure Receive Unit after Reset
1319 * @adapter: board private structure
1321 * Configure the Rx unit of the MAC after a reset.
1323 static void igbvf_configure_rx(struct igbvf_adapter
*adapter
)
1325 struct e1000_hw
*hw
= &adapter
->hw
;
1326 struct igbvf_ring
*rx_ring
= adapter
->rx_ring
;
1330 /* disable receives */
1331 rxdctl
= er32(RXDCTL(0));
1332 ew32(RXDCTL(0), rxdctl
& ~E1000_RXDCTL_QUEUE_ENABLE
);
1336 rdlen
= rx_ring
->count
* sizeof(union e1000_adv_rx_desc
);
1339 * Setup the HW Rx Head and Tail Descriptor Pointers and
1340 * the Base and Length of the Rx Descriptor Ring
1342 rdba
= rx_ring
->dma
;
1343 ew32(RDBAL(0), (rdba
& DMA_BIT_MASK(32)));
1344 ew32(RDBAH(0), (rdba
>> 32));
1345 ew32(RDLEN(0), rx_ring
->count
* sizeof(union e1000_adv_rx_desc
));
1346 rx_ring
->head
= E1000_RDH(0);
1347 rx_ring
->tail
= E1000_RDT(0);
1351 rxdctl
|= E1000_RXDCTL_QUEUE_ENABLE
;
1352 rxdctl
&= 0xFFF00000;
1353 rxdctl
|= IGBVF_RX_PTHRESH
;
1354 rxdctl
|= IGBVF_RX_HTHRESH
<< 8;
1355 rxdctl
|= IGBVF_RX_WTHRESH
<< 16;
1357 igbvf_set_rlpml(adapter
);
1359 /* enable receives */
1360 ew32(RXDCTL(0), rxdctl
);
1364 * igbvf_set_multi - Multicast and Promiscuous mode set
1365 * @netdev: network interface device structure
1367 * The set_multi entry point is called whenever the multicast address
1368 * list or the network interface flags are updated. This routine is
1369 * responsible for configuring the hardware for proper multicast,
1370 * promiscuous mode, and all-multi behavior.
1372 static void igbvf_set_multi(struct net_device
*netdev
)
1374 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
1375 struct e1000_hw
*hw
= &adapter
->hw
;
1376 struct netdev_hw_addr
*ha
;
1377 u8
*mta_list
= NULL
;
1380 if (!netdev_mc_empty(netdev
)) {
1381 mta_list
= kmalloc(netdev_mc_count(netdev
) * 6, GFP_ATOMIC
);
1383 dev_err(&adapter
->pdev
->dev
,
1384 "failed to allocate multicast filter list\n");
1389 /* prepare a packed array of only addresses. */
1391 netdev_for_each_mc_addr(ha
, netdev
)
1392 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
1394 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
, 0, 0);
1399 * igbvf_configure - configure the hardware for Rx and Tx
1400 * @adapter: private board structure
1402 static void igbvf_configure(struct igbvf_adapter
*adapter
)
1404 igbvf_set_multi(adapter
->netdev
);
1406 igbvf_restore_vlan(adapter
);
1408 igbvf_configure_tx(adapter
);
1409 igbvf_setup_srrctl(adapter
);
1410 igbvf_configure_rx(adapter
);
1411 igbvf_alloc_rx_buffers(adapter
->rx_ring
,
1412 igbvf_desc_unused(adapter
->rx_ring
));
1415 /* igbvf_reset - bring the hardware into a known good state
1417 * This function boots the hardware and enables some settings that
1418 * require a configuration cycle of the hardware - those cannot be
1419 * set/changed during runtime. After reset the device needs to be
1420 * properly configured for Rx, Tx etc.
1422 static void igbvf_reset(struct igbvf_adapter
*adapter
)
1424 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
1425 struct net_device
*netdev
= adapter
->netdev
;
1426 struct e1000_hw
*hw
= &adapter
->hw
;
1428 /* Allow time for pending master requests to run */
1429 if (mac
->ops
.reset_hw(hw
))
1430 dev_err(&adapter
->pdev
->dev
, "PF still resetting\n");
1432 mac
->ops
.init_hw(hw
);
1434 if (is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
1435 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
1437 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
,
1441 adapter
->last_reset
= jiffies
;
1444 int igbvf_up(struct igbvf_adapter
*adapter
)
1446 struct e1000_hw
*hw
= &adapter
->hw
;
1448 /* hardware has been reset, we need to reload some things */
1449 igbvf_configure(adapter
);
1451 clear_bit(__IGBVF_DOWN
, &adapter
->state
);
1453 napi_enable(&adapter
->rx_ring
->napi
);
1454 if (adapter
->msix_entries
)
1455 igbvf_configure_msix(adapter
);
1457 /* Clear any pending interrupts. */
1459 igbvf_irq_enable(adapter
);
1461 /* start the watchdog */
1462 hw
->mac
.get_link_status
= 1;
1463 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1469 void igbvf_down(struct igbvf_adapter
*adapter
)
1471 struct net_device
*netdev
= adapter
->netdev
;
1472 struct e1000_hw
*hw
= &adapter
->hw
;
1476 * signal that we're down so the interrupt handler does not
1477 * reschedule our watchdog timer
1479 set_bit(__IGBVF_DOWN
, &adapter
->state
);
1481 /* disable receives in the hardware */
1482 rxdctl
= er32(RXDCTL(0));
1483 ew32(RXDCTL(0), rxdctl
& ~E1000_RXDCTL_QUEUE_ENABLE
);
1485 netif_stop_queue(netdev
);
1487 /* disable transmits in the hardware */
1488 txdctl
= er32(TXDCTL(0));
1489 ew32(TXDCTL(0), txdctl
& ~E1000_TXDCTL_QUEUE_ENABLE
);
1491 /* flush both disables and wait for them to finish */
1495 napi_disable(&adapter
->rx_ring
->napi
);
1497 igbvf_irq_disable(adapter
);
1499 del_timer_sync(&adapter
->watchdog_timer
);
1501 netif_carrier_off(netdev
);
1503 /* record the stats before reset*/
1504 igbvf_update_stats(adapter
);
1506 adapter
->link_speed
= 0;
1507 adapter
->link_duplex
= 0;
1509 igbvf_reset(adapter
);
1510 igbvf_clean_tx_ring(adapter
->tx_ring
);
1511 igbvf_clean_rx_ring(adapter
->rx_ring
);
1514 void igbvf_reinit_locked(struct igbvf_adapter
*adapter
)
1517 while (test_and_set_bit(__IGBVF_RESETTING
, &adapter
->state
))
1519 igbvf_down(adapter
);
1521 clear_bit(__IGBVF_RESETTING
, &adapter
->state
);
1525 * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter)
1526 * @adapter: board private structure to initialize
1528 * igbvf_sw_init initializes the Adapter private data structure.
1529 * Fields are initialized based on PCI device information and
1530 * OS network device settings (MTU size).
1532 static int __devinit
igbvf_sw_init(struct igbvf_adapter
*adapter
)
1534 struct net_device
*netdev
= adapter
->netdev
;
1537 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
1538 adapter
->rx_ps_hdr_size
= 0;
1539 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1540 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
1542 adapter
->tx_int_delay
= 8;
1543 adapter
->tx_abs_int_delay
= 32;
1544 adapter
->rx_int_delay
= 0;
1545 adapter
->rx_abs_int_delay
= 8;
1546 adapter
->requested_itr
= 3;
1547 adapter
->current_itr
= IGBVF_START_ITR
;
1549 /* Set various function pointers */
1550 adapter
->ei
->init_ops(&adapter
->hw
);
1552 rc
= adapter
->hw
.mac
.ops
.init_params(&adapter
->hw
);
1556 rc
= adapter
->hw
.mbx
.ops
.init_params(&adapter
->hw
);
1560 igbvf_set_interrupt_capability(adapter
);
1562 if (igbvf_alloc_queues(adapter
))
1565 spin_lock_init(&adapter
->tx_queue_lock
);
1567 /* Explicitly disable IRQ since the NIC can be in any state. */
1568 igbvf_irq_disable(adapter
);
1570 spin_lock_init(&adapter
->stats_lock
);
1572 set_bit(__IGBVF_DOWN
, &adapter
->state
);
1576 static void igbvf_initialize_last_counter_stats(struct igbvf_adapter
*adapter
)
1578 struct e1000_hw
*hw
= &adapter
->hw
;
1580 adapter
->stats
.last_gprc
= er32(VFGPRC
);
1581 adapter
->stats
.last_gorc
= er32(VFGORC
);
1582 adapter
->stats
.last_gptc
= er32(VFGPTC
);
1583 adapter
->stats
.last_gotc
= er32(VFGOTC
);
1584 adapter
->stats
.last_mprc
= er32(VFMPRC
);
1585 adapter
->stats
.last_gotlbc
= er32(VFGOTLBC
);
1586 adapter
->stats
.last_gptlbc
= er32(VFGPTLBC
);
1587 adapter
->stats
.last_gorlbc
= er32(VFGORLBC
);
1588 adapter
->stats
.last_gprlbc
= er32(VFGPRLBC
);
1590 adapter
->stats
.base_gprc
= er32(VFGPRC
);
1591 adapter
->stats
.base_gorc
= er32(VFGORC
);
1592 adapter
->stats
.base_gptc
= er32(VFGPTC
);
1593 adapter
->stats
.base_gotc
= er32(VFGOTC
);
1594 adapter
->stats
.base_mprc
= er32(VFMPRC
);
1595 adapter
->stats
.base_gotlbc
= er32(VFGOTLBC
);
1596 adapter
->stats
.base_gptlbc
= er32(VFGPTLBC
);
1597 adapter
->stats
.base_gorlbc
= er32(VFGORLBC
);
1598 adapter
->stats
.base_gprlbc
= er32(VFGPRLBC
);
1602 * igbvf_open - Called when a network interface is made active
1603 * @netdev: network interface device structure
1605 * Returns 0 on success, negative value on failure
1607 * The open entry point is called when a network interface is made
1608 * active by the system (IFF_UP). At this point all resources needed
1609 * for transmit and receive operations are allocated, the interrupt
1610 * handler is registered with the OS, the watchdog timer is started,
1611 * and the stack is notified that the interface is ready.
1613 static int igbvf_open(struct net_device
*netdev
)
1615 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
1616 struct e1000_hw
*hw
= &adapter
->hw
;
1619 /* disallow open during test */
1620 if (test_bit(__IGBVF_TESTING
, &adapter
->state
))
1623 /* allocate transmit descriptors */
1624 err
= igbvf_setup_tx_resources(adapter
, adapter
->tx_ring
);
1628 /* allocate receive descriptors */
1629 err
= igbvf_setup_rx_resources(adapter
, adapter
->rx_ring
);
1634 * before we allocate an interrupt, we must be ready to handle it.
1635 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1636 * as soon as we call pci_request_irq, so we have to setup our
1637 * clean_rx handler before we do so.
1639 igbvf_configure(adapter
);
1641 err
= igbvf_request_irq(adapter
);
1645 /* From here on the code is the same as igbvf_up() */
1646 clear_bit(__IGBVF_DOWN
, &adapter
->state
);
1648 napi_enable(&adapter
->rx_ring
->napi
);
1650 /* clear any pending interrupts */
1653 igbvf_irq_enable(adapter
);
1655 /* start the watchdog */
1656 hw
->mac
.get_link_status
= 1;
1657 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1662 igbvf_free_rx_resources(adapter
->rx_ring
);
1664 igbvf_free_tx_resources(adapter
->tx_ring
);
1666 igbvf_reset(adapter
);
1672 * igbvf_close - Disables a network interface
1673 * @netdev: network interface device structure
1675 * Returns 0, this is not allowed to fail
1677 * The close entry point is called when an interface is de-activated
1678 * by the OS. The hardware is still under the drivers control, but
1679 * needs to be disabled. A global MAC reset is issued to stop the
1680 * hardware, and all transmit and receive resources are freed.
1682 static int igbvf_close(struct net_device
*netdev
)
1684 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
1686 WARN_ON(test_bit(__IGBVF_RESETTING
, &adapter
->state
));
1687 igbvf_down(adapter
);
1689 igbvf_free_irq(adapter
);
1691 igbvf_free_tx_resources(adapter
->tx_ring
);
1692 igbvf_free_rx_resources(adapter
->rx_ring
);
1697 * igbvf_set_mac - Change the Ethernet Address of the NIC
1698 * @netdev: network interface device structure
1699 * @p: pointer to an address structure
1701 * Returns 0 on success, negative on failure
1703 static int igbvf_set_mac(struct net_device
*netdev
, void *p
)
1705 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
1706 struct e1000_hw
*hw
= &adapter
->hw
;
1707 struct sockaddr
*addr
= p
;
1709 if (!is_valid_ether_addr(addr
->sa_data
))
1710 return -EADDRNOTAVAIL
;
1712 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
1714 hw
->mac
.ops
.rar_set(hw
, hw
->mac
.addr
, 0);
1716 if (memcmp(addr
->sa_data
, hw
->mac
.addr
, 6))
1717 return -EADDRNOTAVAIL
;
1719 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
1720 netdev
->addr_assign_type
&= ~NET_ADDR_RANDOM
;
1725 #define UPDATE_VF_COUNTER(reg, name) \
1727 u32 current_counter = er32(reg); \
1728 if (current_counter < adapter->stats.last_##name) \
1729 adapter->stats.name += 0x100000000LL; \
1730 adapter->stats.last_##name = current_counter; \
1731 adapter->stats.name &= 0xFFFFFFFF00000000LL; \
1732 adapter->stats.name |= current_counter; \
1736 * igbvf_update_stats - Update the board statistics counters
1737 * @adapter: board private structure
1739 void igbvf_update_stats(struct igbvf_adapter
*adapter
)
1741 struct e1000_hw
*hw
= &adapter
->hw
;
1742 struct pci_dev
*pdev
= adapter
->pdev
;
1745 * Prevent stats update while adapter is being reset, link is down
1746 * or if the pci connection is down.
1748 if (adapter
->link_speed
== 0)
1751 if (test_bit(__IGBVF_RESETTING
, &adapter
->state
))
1754 if (pci_channel_offline(pdev
))
1757 UPDATE_VF_COUNTER(VFGPRC
, gprc
);
1758 UPDATE_VF_COUNTER(VFGORC
, gorc
);
1759 UPDATE_VF_COUNTER(VFGPTC
, gptc
);
1760 UPDATE_VF_COUNTER(VFGOTC
, gotc
);
1761 UPDATE_VF_COUNTER(VFMPRC
, mprc
);
1762 UPDATE_VF_COUNTER(VFGOTLBC
, gotlbc
);
1763 UPDATE_VF_COUNTER(VFGPTLBC
, gptlbc
);
1764 UPDATE_VF_COUNTER(VFGORLBC
, gorlbc
);
1765 UPDATE_VF_COUNTER(VFGPRLBC
, gprlbc
);
1767 /* Fill out the OS statistics structure */
1768 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
1771 static void igbvf_print_link_info(struct igbvf_adapter
*adapter
)
1773 dev_info(&adapter
->pdev
->dev
, "Link is Up %d Mbps %s Duplex\n",
1774 adapter
->link_speed
,
1775 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half");
1778 static bool igbvf_has_link(struct igbvf_adapter
*adapter
)
1780 struct e1000_hw
*hw
= &adapter
->hw
;
1781 s32 ret_val
= E1000_SUCCESS
;
1784 /* If interface is down, stay link down */
1785 if (test_bit(__IGBVF_DOWN
, &adapter
->state
))
1788 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
1789 link_active
= !hw
->mac
.get_link_status
;
1791 /* if check for link returns error we will need to reset */
1792 if (ret_val
&& time_after(jiffies
, adapter
->last_reset
+ (10 * HZ
)))
1793 schedule_work(&adapter
->reset_task
);
1799 * igbvf_watchdog - Timer Call-back
1800 * @data: pointer to adapter cast into an unsigned long
1802 static void igbvf_watchdog(unsigned long data
)
1804 struct igbvf_adapter
*adapter
= (struct igbvf_adapter
*) data
;
1806 /* Do the rest outside of interrupt context */
1807 schedule_work(&adapter
->watchdog_task
);
1810 static void igbvf_watchdog_task(struct work_struct
*work
)
1812 struct igbvf_adapter
*adapter
= container_of(work
,
1813 struct igbvf_adapter
,
1815 struct net_device
*netdev
= adapter
->netdev
;
1816 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
1817 struct igbvf_ring
*tx_ring
= adapter
->tx_ring
;
1818 struct e1000_hw
*hw
= &adapter
->hw
;
1822 link
= igbvf_has_link(adapter
);
1825 if (!netif_carrier_ok(netdev
)) {
1826 mac
->ops
.get_link_up_info(&adapter
->hw
,
1827 &adapter
->link_speed
,
1828 &adapter
->link_duplex
);
1829 igbvf_print_link_info(adapter
);
1831 netif_carrier_on(netdev
);
1832 netif_wake_queue(netdev
);
1835 if (netif_carrier_ok(netdev
)) {
1836 adapter
->link_speed
= 0;
1837 adapter
->link_duplex
= 0;
1838 dev_info(&adapter
->pdev
->dev
, "Link is Down\n");
1839 netif_carrier_off(netdev
);
1840 netif_stop_queue(netdev
);
1844 if (netif_carrier_ok(netdev
)) {
1845 igbvf_update_stats(adapter
);
1847 tx_pending
= (igbvf_desc_unused(tx_ring
) + 1 <
1851 * We've lost link, so the controller stops DMA,
1852 * but we've got queued Tx work that's never going
1853 * to get done, so reset controller to flush Tx.
1854 * (Do the reset outside of interrupt context).
1856 adapter
->tx_timeout_count
++;
1857 schedule_work(&adapter
->reset_task
);
1861 /* Cause software interrupt to ensure Rx ring is cleaned */
1862 ew32(EICS
, adapter
->rx_ring
->eims_value
);
1864 /* Reset the timer */
1865 if (!test_bit(__IGBVF_DOWN
, &adapter
->state
))
1866 mod_timer(&adapter
->watchdog_timer
,
1867 round_jiffies(jiffies
+ (2 * HZ
)));
1870 #define IGBVF_TX_FLAGS_CSUM 0x00000001
1871 #define IGBVF_TX_FLAGS_VLAN 0x00000002
1872 #define IGBVF_TX_FLAGS_TSO 0x00000004
1873 #define IGBVF_TX_FLAGS_IPV4 0x00000008
1874 #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000
1875 #define IGBVF_TX_FLAGS_VLAN_SHIFT 16
1877 static int igbvf_tso(struct igbvf_adapter
*adapter
,
1878 struct igbvf_ring
*tx_ring
,
1879 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
1881 struct e1000_adv_tx_context_desc
*context_desc
;
1884 struct igbvf_buffer
*buffer_info
;
1885 u32 info
= 0, tu_cmd
= 0;
1886 u32 mss_l4len_idx
, l4len
;
1889 if (skb_header_cloned(skb
)) {
1890 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1892 dev_err(&adapter
->pdev
->dev
,
1893 "igbvf_tso returning an error\n");
1898 l4len
= tcp_hdrlen(skb
);
1901 if (skb
->protocol
== htons(ETH_P_IP
)) {
1902 struct iphdr
*iph
= ip_hdr(skb
);
1905 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
1909 } else if (skb_is_gso_v6(skb
)) {
1910 ipv6_hdr(skb
)->payload_len
= 0;
1911 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
1912 &ipv6_hdr(skb
)->daddr
,
1916 i
= tx_ring
->next_to_use
;
1918 buffer_info
= &tx_ring
->buffer_info
[i
];
1919 context_desc
= IGBVF_TX_CTXTDESC_ADV(*tx_ring
, i
);
1920 /* VLAN MACLEN IPLEN */
1921 if (tx_flags
& IGBVF_TX_FLAGS_VLAN
)
1922 info
|= (tx_flags
& IGBVF_TX_FLAGS_VLAN_MASK
);
1923 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
1924 *hdr_len
+= skb_network_offset(skb
);
1925 info
|= (skb_transport_header(skb
) - skb_network_header(skb
));
1926 *hdr_len
+= (skb_transport_header(skb
) - skb_network_header(skb
));
1927 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
1929 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
1930 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
1932 if (skb
->protocol
== htons(ETH_P_IP
))
1933 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
1934 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
1936 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
1939 mss_l4len_idx
= (skb_shinfo(skb
)->gso_size
<< E1000_ADVTXD_MSS_SHIFT
);
1940 mss_l4len_idx
|= (l4len
<< E1000_ADVTXD_L4LEN_SHIFT
);
1942 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
1943 context_desc
->seqnum_seed
= 0;
1945 buffer_info
->time_stamp
= jiffies
;
1946 buffer_info
->next_to_watch
= i
;
1947 buffer_info
->dma
= 0;
1949 if (i
== tx_ring
->count
)
1952 tx_ring
->next_to_use
= i
;
1957 static inline bool igbvf_tx_csum(struct igbvf_adapter
*adapter
,
1958 struct igbvf_ring
*tx_ring
,
1959 struct sk_buff
*skb
, u32 tx_flags
)
1961 struct e1000_adv_tx_context_desc
*context_desc
;
1963 struct igbvf_buffer
*buffer_info
;
1964 u32 info
= 0, tu_cmd
= 0;
1966 if ((skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
1967 (tx_flags
& IGBVF_TX_FLAGS_VLAN
)) {
1968 i
= tx_ring
->next_to_use
;
1969 buffer_info
= &tx_ring
->buffer_info
[i
];
1970 context_desc
= IGBVF_TX_CTXTDESC_ADV(*tx_ring
, i
);
1972 if (tx_flags
& IGBVF_TX_FLAGS_VLAN
)
1973 info
|= (tx_flags
& IGBVF_TX_FLAGS_VLAN_MASK
);
1975 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
1976 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
1977 info
|= (skb_transport_header(skb
) -
1978 skb_network_header(skb
));
1981 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
1983 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
1985 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1986 switch (skb
->protocol
) {
1987 case __constant_htons(ETH_P_IP
):
1988 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
1989 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
1990 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
1992 case __constant_htons(ETH_P_IPV6
):
1993 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
1994 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2001 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2002 context_desc
->seqnum_seed
= 0;
2003 context_desc
->mss_l4len_idx
= 0;
2005 buffer_info
->time_stamp
= jiffies
;
2006 buffer_info
->next_to_watch
= i
;
2007 buffer_info
->dma
= 0;
2009 if (i
== tx_ring
->count
)
2011 tx_ring
->next_to_use
= i
;
2019 static int igbvf_maybe_stop_tx(struct net_device
*netdev
, int size
)
2021 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2023 /* there is enough descriptors then we don't need to worry */
2024 if (igbvf_desc_unused(adapter
->tx_ring
) >= size
)
2027 netif_stop_queue(netdev
);
2031 /* We need to check again just in case room has been made available */
2032 if (igbvf_desc_unused(adapter
->tx_ring
) < size
)
2035 netif_wake_queue(netdev
);
2037 ++adapter
->restart_queue
;
2041 #define IGBVF_MAX_TXD_PWR 16
2042 #define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR)
2044 static inline int igbvf_tx_map_adv(struct igbvf_adapter
*adapter
,
2045 struct igbvf_ring
*tx_ring
,
2046 struct sk_buff
*skb
,
2049 struct igbvf_buffer
*buffer_info
;
2050 struct pci_dev
*pdev
= adapter
->pdev
;
2051 unsigned int len
= skb_headlen(skb
);
2052 unsigned int count
= 0, i
;
2055 i
= tx_ring
->next_to_use
;
2057 buffer_info
= &tx_ring
->buffer_info
[i
];
2058 BUG_ON(len
>= IGBVF_MAX_DATA_PER_TXD
);
2059 buffer_info
->length
= len
;
2060 /* set time_stamp *before* dma to help avoid a possible race */
2061 buffer_info
->time_stamp
= jiffies
;
2062 buffer_info
->next_to_watch
= i
;
2063 buffer_info
->mapped_as_page
= false;
2064 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
, len
,
2066 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
2070 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++) {
2071 const struct skb_frag_struct
*frag
;
2075 if (i
== tx_ring
->count
)
2078 frag
= &skb_shinfo(skb
)->frags
[f
];
2079 len
= skb_frag_size(frag
);
2081 buffer_info
= &tx_ring
->buffer_info
[i
];
2082 BUG_ON(len
>= IGBVF_MAX_DATA_PER_TXD
);
2083 buffer_info
->length
= len
;
2084 buffer_info
->time_stamp
= jiffies
;
2085 buffer_info
->next_to_watch
= i
;
2086 buffer_info
->mapped_as_page
= true;
2087 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
, 0, len
,
2089 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
2093 tx_ring
->buffer_info
[i
].skb
= skb
;
2094 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2099 dev_err(&pdev
->dev
, "TX DMA map failed\n");
2101 /* clear timestamp and dma mappings for failed buffer_info mapping */
2102 buffer_info
->dma
= 0;
2103 buffer_info
->time_stamp
= 0;
2104 buffer_info
->length
= 0;
2105 buffer_info
->next_to_watch
= 0;
2106 buffer_info
->mapped_as_page
= false;
2110 /* clear timestamp and dma mappings for remaining portion of packet */
2113 i
+= tx_ring
->count
;
2115 buffer_info
= &tx_ring
->buffer_info
[i
];
2116 igbvf_put_txbuf(adapter
, buffer_info
);
2122 static inline void igbvf_tx_queue_adv(struct igbvf_adapter
*adapter
,
2123 struct igbvf_ring
*tx_ring
,
2124 int tx_flags
, int count
, u32 paylen
,
2127 union e1000_adv_tx_desc
*tx_desc
= NULL
;
2128 struct igbvf_buffer
*buffer_info
;
2129 u32 olinfo_status
= 0, cmd_type_len
;
2132 cmd_type_len
= (E1000_ADVTXD_DTYP_DATA
| E1000_ADVTXD_DCMD_IFCS
|
2133 E1000_ADVTXD_DCMD_DEXT
);
2135 if (tx_flags
& IGBVF_TX_FLAGS_VLAN
)
2136 cmd_type_len
|= E1000_ADVTXD_DCMD_VLE
;
2138 if (tx_flags
& IGBVF_TX_FLAGS_TSO
) {
2139 cmd_type_len
|= E1000_ADVTXD_DCMD_TSE
;
2141 /* insert tcp checksum */
2142 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2144 /* insert ip checksum */
2145 if (tx_flags
& IGBVF_TX_FLAGS_IPV4
)
2146 olinfo_status
|= E1000_TXD_POPTS_IXSM
<< 8;
2148 } else if (tx_flags
& IGBVF_TX_FLAGS_CSUM
) {
2149 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2152 olinfo_status
|= ((paylen
- hdr_len
) << E1000_ADVTXD_PAYLEN_SHIFT
);
2154 i
= tx_ring
->next_to_use
;
2156 buffer_info
= &tx_ring
->buffer_info
[i
];
2157 tx_desc
= IGBVF_TX_DESC_ADV(*tx_ring
, i
);
2158 tx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2159 tx_desc
->read
.cmd_type_len
=
2160 cpu_to_le32(cmd_type_len
| buffer_info
->length
);
2161 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
2163 if (i
== tx_ring
->count
)
2167 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(adapter
->txd_cmd
);
2168 /* Force memory writes to complete before letting h/w
2169 * know there are new descriptors to fetch. (Only
2170 * applicable for weak-ordered memory model archs,
2171 * such as IA-64). */
2174 tx_ring
->next_to_use
= i
;
2175 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2176 /* we need this if more than one processor can write to our tail
2177 * at a time, it syncronizes IO on IA64/Altix systems */
2181 static netdev_tx_t
igbvf_xmit_frame_ring_adv(struct sk_buff
*skb
,
2182 struct net_device
*netdev
,
2183 struct igbvf_ring
*tx_ring
)
2185 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2186 unsigned int first
, tx_flags
= 0;
2191 if (test_bit(__IGBVF_DOWN
, &adapter
->state
)) {
2192 dev_kfree_skb_any(skb
);
2193 return NETDEV_TX_OK
;
2196 if (skb
->len
<= 0) {
2197 dev_kfree_skb_any(skb
);
2198 return NETDEV_TX_OK
;
2202 * need: count + 4 desc gap to keep tail from touching
2203 * + 2 desc gap to keep tail from touching head,
2204 * + 1 desc for skb->data,
2205 * + 1 desc for context descriptor,
2206 * head, otherwise try next time
2208 if (igbvf_maybe_stop_tx(netdev
, skb_shinfo(skb
)->nr_frags
+ 4)) {
2209 /* this is a hard error */
2210 return NETDEV_TX_BUSY
;
2213 if (vlan_tx_tag_present(skb
)) {
2214 tx_flags
|= IGBVF_TX_FLAGS_VLAN
;
2215 tx_flags
|= (vlan_tx_tag_get(skb
) << IGBVF_TX_FLAGS_VLAN_SHIFT
);
2218 if (skb
->protocol
== htons(ETH_P_IP
))
2219 tx_flags
|= IGBVF_TX_FLAGS_IPV4
;
2221 first
= tx_ring
->next_to_use
;
2223 tso
= skb_is_gso(skb
) ?
2224 igbvf_tso(adapter
, tx_ring
, skb
, tx_flags
, &hdr_len
) : 0;
2225 if (unlikely(tso
< 0)) {
2226 dev_kfree_skb_any(skb
);
2227 return NETDEV_TX_OK
;
2231 tx_flags
|= IGBVF_TX_FLAGS_TSO
;
2232 else if (igbvf_tx_csum(adapter
, tx_ring
, skb
, tx_flags
) &&
2233 (skb
->ip_summed
== CHECKSUM_PARTIAL
))
2234 tx_flags
|= IGBVF_TX_FLAGS_CSUM
;
2237 * count reflects descriptors mapped, if 0 then mapping error
2238 * has occurred and we need to rewind the descriptor queue
2240 count
= igbvf_tx_map_adv(adapter
, tx_ring
, skb
, first
);
2243 igbvf_tx_queue_adv(adapter
, tx_ring
, tx_flags
, count
,
2245 /* Make sure there is space in the ring for the next send. */
2246 igbvf_maybe_stop_tx(netdev
, MAX_SKB_FRAGS
+ 4);
2248 dev_kfree_skb_any(skb
);
2249 tx_ring
->buffer_info
[first
].time_stamp
= 0;
2250 tx_ring
->next_to_use
= first
;
2253 return NETDEV_TX_OK
;
2256 static netdev_tx_t
igbvf_xmit_frame(struct sk_buff
*skb
,
2257 struct net_device
*netdev
)
2259 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2260 struct igbvf_ring
*tx_ring
;
2262 if (test_bit(__IGBVF_DOWN
, &adapter
->state
)) {
2263 dev_kfree_skb_any(skb
);
2264 return NETDEV_TX_OK
;
2267 tx_ring
= &adapter
->tx_ring
[0];
2269 return igbvf_xmit_frame_ring_adv(skb
, netdev
, tx_ring
);
2273 * igbvf_tx_timeout - Respond to a Tx Hang
2274 * @netdev: network interface device structure
2276 static void igbvf_tx_timeout(struct net_device
*netdev
)
2278 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2280 /* Do the reset outside of interrupt context */
2281 adapter
->tx_timeout_count
++;
2282 schedule_work(&adapter
->reset_task
);
2285 static void igbvf_reset_task(struct work_struct
*work
)
2287 struct igbvf_adapter
*adapter
;
2288 adapter
= container_of(work
, struct igbvf_adapter
, reset_task
);
2290 igbvf_reinit_locked(adapter
);
2294 * igbvf_get_stats - Get System Network Statistics
2295 * @netdev: network interface device structure
2297 * Returns the address of the device statistics structure.
2298 * The statistics are actually updated from the timer callback.
2300 static struct net_device_stats
*igbvf_get_stats(struct net_device
*netdev
)
2302 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2304 /* only return the current stats */
2305 return &adapter
->net_stats
;
2309 * igbvf_change_mtu - Change the Maximum Transfer Unit
2310 * @netdev: network interface device structure
2311 * @new_mtu: new value for maximum frame size
2313 * Returns 0 on success, negative on failure
2315 static int igbvf_change_mtu(struct net_device
*netdev
, int new_mtu
)
2317 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2318 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2320 if ((new_mtu
< 68) || (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2321 dev_err(&adapter
->pdev
->dev
, "Invalid MTU setting\n");
2325 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2326 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2327 dev_err(&adapter
->pdev
->dev
, "MTU > 9216 not supported.\n");
2331 while (test_and_set_bit(__IGBVF_RESETTING
, &adapter
->state
))
2333 /* igbvf_down has a dependency on max_frame_size */
2334 adapter
->max_frame_size
= max_frame
;
2335 if (netif_running(netdev
))
2336 igbvf_down(adapter
);
2339 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
2340 * means we reserve 2 more, this pushes us to allocate from the next
2342 * i.e. RXBUFFER_2048 --> size-4096 slab
2343 * However with the new *_jumbo_rx* routines, jumbo receives will use
2347 if (max_frame
<= 1024)
2348 adapter
->rx_buffer_len
= 1024;
2349 else if (max_frame
<= 2048)
2350 adapter
->rx_buffer_len
= 2048;
2352 #if (PAGE_SIZE / 2) > 16384
2353 adapter
->rx_buffer_len
= 16384;
2355 adapter
->rx_buffer_len
= PAGE_SIZE
/ 2;
2359 /* adjust allocation if LPE protects us, and we aren't using SBP */
2360 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
2361 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
2362 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+
2365 dev_info(&adapter
->pdev
->dev
, "changing MTU from %d to %d\n",
2366 netdev
->mtu
, new_mtu
);
2367 netdev
->mtu
= new_mtu
;
2369 if (netif_running(netdev
))
2372 igbvf_reset(adapter
);
2374 clear_bit(__IGBVF_RESETTING
, &adapter
->state
);
2379 static int igbvf_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
2387 static int igbvf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2389 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2390 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2395 netif_device_detach(netdev
);
2397 if (netif_running(netdev
)) {
2398 WARN_ON(test_bit(__IGBVF_RESETTING
, &adapter
->state
));
2399 igbvf_down(adapter
);
2400 igbvf_free_irq(adapter
);
2404 retval
= pci_save_state(pdev
);
2409 pci_disable_device(pdev
);
2415 static int igbvf_resume(struct pci_dev
*pdev
)
2417 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2418 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2421 pci_restore_state(pdev
);
2422 err
= pci_enable_device_mem(pdev
);
2424 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
2428 pci_set_master(pdev
);
2430 if (netif_running(netdev
)) {
2431 err
= igbvf_request_irq(adapter
);
2436 igbvf_reset(adapter
);
2438 if (netif_running(netdev
))
2441 netif_device_attach(netdev
);
2447 static void igbvf_shutdown(struct pci_dev
*pdev
)
2449 igbvf_suspend(pdev
, PMSG_SUSPEND
);
2452 #ifdef CONFIG_NET_POLL_CONTROLLER
2454 * Polling 'interrupt' - used by things like netconsole to send skbs
2455 * without having to re-enable interrupts. It's not called while
2456 * the interrupt routine is executing.
2458 static void igbvf_netpoll(struct net_device
*netdev
)
2460 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2462 disable_irq(adapter
->pdev
->irq
);
2464 igbvf_clean_tx_irq(adapter
->tx_ring
);
2466 enable_irq(adapter
->pdev
->irq
);
2471 * igbvf_io_error_detected - called when PCI error is detected
2472 * @pdev: Pointer to PCI device
2473 * @state: The current pci connection state
2475 * This function is called after a PCI bus error affecting
2476 * this device has been detected.
2478 static pci_ers_result_t
igbvf_io_error_detected(struct pci_dev
*pdev
,
2479 pci_channel_state_t state
)
2481 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2482 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2484 netif_device_detach(netdev
);
2486 if (state
== pci_channel_io_perm_failure
)
2487 return PCI_ERS_RESULT_DISCONNECT
;
2489 if (netif_running(netdev
))
2490 igbvf_down(adapter
);
2491 pci_disable_device(pdev
);
2493 /* Request a slot slot reset. */
2494 return PCI_ERS_RESULT_NEED_RESET
;
2498 * igbvf_io_slot_reset - called after the pci bus has been reset.
2499 * @pdev: Pointer to PCI device
2501 * Restart the card from scratch, as if from a cold-boot. Implementation
2502 * resembles the first-half of the igbvf_resume routine.
2504 static pci_ers_result_t
igbvf_io_slot_reset(struct pci_dev
*pdev
)
2506 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2507 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2509 if (pci_enable_device_mem(pdev
)) {
2511 "Cannot re-enable PCI device after reset.\n");
2512 return PCI_ERS_RESULT_DISCONNECT
;
2514 pci_set_master(pdev
);
2516 igbvf_reset(adapter
);
2518 return PCI_ERS_RESULT_RECOVERED
;
2522 * igbvf_io_resume - called when traffic can start flowing again.
2523 * @pdev: Pointer to PCI device
2525 * This callback is called when the error recovery driver tells us that
2526 * its OK to resume normal operation. Implementation resembles the
2527 * second-half of the igbvf_resume routine.
2529 static void igbvf_io_resume(struct pci_dev
*pdev
)
2531 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2532 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2534 if (netif_running(netdev
)) {
2535 if (igbvf_up(adapter
)) {
2537 "can't bring device back up after reset\n");
2542 netif_device_attach(netdev
);
2545 static void igbvf_print_device_info(struct igbvf_adapter
*adapter
)
2547 struct e1000_hw
*hw
= &adapter
->hw
;
2548 struct net_device
*netdev
= adapter
->netdev
;
2549 struct pci_dev
*pdev
= adapter
->pdev
;
2551 if (hw
->mac
.type
== e1000_vfadapt_i350
)
2552 dev_info(&pdev
->dev
, "Intel(R) I350 Virtual Function\n");
2554 dev_info(&pdev
->dev
, "Intel(R) 82576 Virtual Function\n");
2555 dev_info(&pdev
->dev
, "Address: %pM\n", netdev
->dev_addr
);
2558 static int igbvf_set_features(struct net_device
*netdev
,
2559 netdev_features_t features
)
2561 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2563 if (features
& NETIF_F_RXCSUM
)
2564 adapter
->flags
&= ~IGBVF_FLAG_RX_CSUM_DISABLED
;
2566 adapter
->flags
|= IGBVF_FLAG_RX_CSUM_DISABLED
;
2571 static const struct net_device_ops igbvf_netdev_ops
= {
2572 .ndo_open
= igbvf_open
,
2573 .ndo_stop
= igbvf_close
,
2574 .ndo_start_xmit
= igbvf_xmit_frame
,
2575 .ndo_get_stats
= igbvf_get_stats
,
2576 .ndo_set_rx_mode
= igbvf_set_multi
,
2577 .ndo_set_mac_address
= igbvf_set_mac
,
2578 .ndo_change_mtu
= igbvf_change_mtu
,
2579 .ndo_do_ioctl
= igbvf_ioctl
,
2580 .ndo_tx_timeout
= igbvf_tx_timeout
,
2581 .ndo_vlan_rx_add_vid
= igbvf_vlan_rx_add_vid
,
2582 .ndo_vlan_rx_kill_vid
= igbvf_vlan_rx_kill_vid
,
2583 #ifdef CONFIG_NET_POLL_CONTROLLER
2584 .ndo_poll_controller
= igbvf_netpoll
,
2586 .ndo_set_features
= igbvf_set_features
,
2590 * igbvf_probe - Device Initialization Routine
2591 * @pdev: PCI device information struct
2592 * @ent: entry in igbvf_pci_tbl
2594 * Returns 0 on success, negative on failure
2596 * igbvf_probe initializes an adapter identified by a pci_dev structure.
2597 * The OS initialization, configuring of the adapter private structure,
2598 * and a hardware reset occur.
2600 static int __devinit
igbvf_probe(struct pci_dev
*pdev
,
2601 const struct pci_device_id
*ent
)
2603 struct net_device
*netdev
;
2604 struct igbvf_adapter
*adapter
;
2605 struct e1000_hw
*hw
;
2606 const struct igbvf_info
*ei
= igbvf_info_tbl
[ent
->driver_data
];
2608 static int cards_found
;
2609 int err
, pci_using_dac
;
2611 err
= pci_enable_device_mem(pdev
);
2616 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64));
2618 err
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64));
2622 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
2624 err
= dma_set_coherent_mask(&pdev
->dev
,
2627 dev_err(&pdev
->dev
, "No usable DMA "
2628 "configuration, aborting\n");
2634 err
= pci_request_regions(pdev
, igbvf_driver_name
);
2638 pci_set_master(pdev
);
2641 netdev
= alloc_etherdev(sizeof(struct igbvf_adapter
));
2643 goto err_alloc_etherdev
;
2645 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2647 pci_set_drvdata(pdev
, netdev
);
2648 adapter
= netdev_priv(netdev
);
2650 adapter
->netdev
= netdev
;
2651 adapter
->pdev
= pdev
;
2653 adapter
->pba
= ei
->pba
;
2654 adapter
->flags
= ei
->flags
;
2655 adapter
->hw
.back
= adapter
;
2656 adapter
->hw
.mac
.type
= ei
->mac
;
2657 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
2659 /* PCI config space info */
2661 hw
->vendor_id
= pdev
->vendor
;
2662 hw
->device_id
= pdev
->device
;
2663 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2664 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2665 hw
->revision_id
= pdev
->revision
;
2668 adapter
->hw
.hw_addr
= ioremap(pci_resource_start(pdev
, 0),
2669 pci_resource_len(pdev
, 0));
2671 if (!adapter
->hw
.hw_addr
)
2674 if (ei
->get_variants
) {
2675 err
= ei
->get_variants(adapter
);
2680 /* setup adapter struct */
2681 err
= igbvf_sw_init(adapter
);
2685 /* construct the net_device struct */
2686 netdev
->netdev_ops
= &igbvf_netdev_ops
;
2688 igbvf_set_ethtool_ops(netdev
);
2689 netdev
->watchdog_timeo
= 5 * HZ
;
2690 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
2692 adapter
->bd_number
= cards_found
++;
2694 netdev
->hw_features
= NETIF_F_SG
|
2701 netdev
->features
= netdev
->hw_features
|
2702 NETIF_F_HW_VLAN_TX
|
2703 NETIF_F_HW_VLAN_RX
|
2704 NETIF_F_HW_VLAN_FILTER
;
2707 netdev
->features
|= NETIF_F_HIGHDMA
;
2709 netdev
->vlan_features
|= NETIF_F_TSO
;
2710 netdev
->vlan_features
|= NETIF_F_TSO6
;
2711 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
2712 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
2713 netdev
->vlan_features
|= NETIF_F_SG
;
2715 /*reset the controller to put the device in a known good state */
2716 err
= hw
->mac
.ops
.reset_hw(hw
);
2718 dev_info(&pdev
->dev
,
2719 "PF still in reset state, assigning new address."
2720 " Is the PF interface up?\n");
2721 eth_hw_addr_random(netdev
);
2722 memcpy(adapter
->hw
.mac
.addr
, netdev
->dev_addr
,
2725 err
= hw
->mac
.ops
.read_mac_addr(hw
);
2727 dev_err(&pdev
->dev
, "Error reading MAC address\n");
2730 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
2734 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
2735 dev_err(&pdev
->dev
, "Invalid MAC Address: %pM\n",
2741 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
2743 setup_timer(&adapter
->watchdog_timer
, &igbvf_watchdog
,
2744 (unsigned long) adapter
);
2746 INIT_WORK(&adapter
->reset_task
, igbvf_reset_task
);
2747 INIT_WORK(&adapter
->watchdog_task
, igbvf_watchdog_task
);
2749 /* ring size defaults */
2750 adapter
->rx_ring
->count
= 1024;
2751 adapter
->tx_ring
->count
= 1024;
2753 /* reset the hardware with the new settings */
2754 igbvf_reset(adapter
);
2756 strcpy(netdev
->name
, "eth%d");
2757 err
= register_netdev(netdev
);
2761 /* tell the stack to leave us alone until igbvf_open() is called */
2762 netif_carrier_off(netdev
);
2763 netif_stop_queue(netdev
);
2765 igbvf_print_device_info(adapter
);
2767 igbvf_initialize_last_counter_stats(adapter
);
2772 kfree(adapter
->tx_ring
);
2773 kfree(adapter
->rx_ring
);
2775 igbvf_reset_interrupt_capability(adapter
);
2776 iounmap(adapter
->hw
.hw_addr
);
2778 free_netdev(netdev
);
2780 pci_release_regions(pdev
);
2783 pci_disable_device(pdev
);
2788 * igbvf_remove - Device Removal Routine
2789 * @pdev: PCI device information struct
2791 * igbvf_remove is called by the PCI subsystem to alert the driver
2792 * that it should release a PCI device. The could be caused by a
2793 * Hot-Plug event, or because the driver is going to be removed from
2796 static void __devexit
igbvf_remove(struct pci_dev
*pdev
)
2798 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2799 struct igbvf_adapter
*adapter
= netdev_priv(netdev
);
2800 struct e1000_hw
*hw
= &adapter
->hw
;
2803 * The watchdog timer may be rescheduled, so explicitly
2804 * disable it from being rescheduled.
2806 set_bit(__IGBVF_DOWN
, &adapter
->state
);
2807 del_timer_sync(&adapter
->watchdog_timer
);
2809 cancel_work_sync(&adapter
->reset_task
);
2810 cancel_work_sync(&adapter
->watchdog_task
);
2812 unregister_netdev(netdev
);
2814 igbvf_reset_interrupt_capability(adapter
);
2817 * it is important to delete the napi struct prior to freeing the
2818 * rx ring so that you do not end up with null pointer refs
2820 netif_napi_del(&adapter
->rx_ring
->napi
);
2821 kfree(adapter
->tx_ring
);
2822 kfree(adapter
->rx_ring
);
2824 iounmap(hw
->hw_addr
);
2825 if (hw
->flash_address
)
2826 iounmap(hw
->flash_address
);
2827 pci_release_regions(pdev
);
2829 free_netdev(netdev
);
2831 pci_disable_device(pdev
);
2834 /* PCI Error Recovery (ERS) */
2835 static struct pci_error_handlers igbvf_err_handler
= {
2836 .error_detected
= igbvf_io_error_detected
,
2837 .slot_reset
= igbvf_io_slot_reset
,
2838 .resume
= igbvf_io_resume
,
2841 static DEFINE_PCI_DEVICE_TABLE(igbvf_pci_tbl
) = {
2842 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_VF
), board_vf
},
2843 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_I350_VF
), board_i350_vf
},
2844 { } /* terminate list */
2846 MODULE_DEVICE_TABLE(pci
, igbvf_pci_tbl
);
2848 /* PCI Device API Driver */
2849 static struct pci_driver igbvf_driver
= {
2850 .name
= igbvf_driver_name
,
2851 .id_table
= igbvf_pci_tbl
,
2852 .probe
= igbvf_probe
,
2853 .remove
= __devexit_p(igbvf_remove
),
2855 /* Power Management Hooks */
2856 .suspend
= igbvf_suspend
,
2857 .resume
= igbvf_resume
,
2859 .shutdown
= igbvf_shutdown
,
2860 .err_handler
= &igbvf_err_handler
2864 * igbvf_init_module - Driver Registration Routine
2866 * igbvf_init_module is the first routine called when the driver is
2867 * loaded. All it does is register with the PCI subsystem.
2869 static int __init
igbvf_init_module(void)
2872 pr_info("%s - version %s\n", igbvf_driver_string
, igbvf_driver_version
);
2873 pr_info("%s\n", igbvf_copyright
);
2875 ret
= pci_register_driver(&igbvf_driver
);
2879 module_init(igbvf_init_module
);
2882 * igbvf_exit_module - Driver Exit Cleanup Routine
2884 * igbvf_exit_module is called just before the driver is removed
2887 static void __exit
igbvf_exit_module(void)
2889 pci_unregister_driver(&igbvf_driver
);
2891 module_exit(igbvf_exit_module
);
2894 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
2895 MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver");
2896 MODULE_LICENSE("GPL");
2897 MODULE_VERSION(DRV_VERSION
);