1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 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 *******************************************************************************/
29 /******************************************************************************
30 Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code
31 ******************************************************************************/
33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
35 #include <linux/types.h>
36 #include <linux/bitops.h>
37 #include <linux/module.h>
38 #include <linux/pci.h>
39 #include <linux/netdevice.h>
40 #include <linux/vmalloc.h>
41 #include <linux/string.h>
44 #include <linux/tcp.h>
45 #include <linux/sctp.h>
46 #include <linux/ipv6.h>
47 #include <linux/slab.h>
48 #include <net/checksum.h>
49 #include <net/ip6_checksum.h>
50 #include <linux/ethtool.h>
52 #include <linux/if_vlan.h>
53 #include <linux/prefetch.h>
57 const char ixgbevf_driver_name
[] = "ixgbevf";
58 static const char ixgbevf_driver_string
[] =
59 "Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver";
61 #define DRV_VERSION "2.7.12-k"
62 const char ixgbevf_driver_version
[] = DRV_VERSION
;
63 static char ixgbevf_copyright
[] =
64 "Copyright (c) 2009 - 2012 Intel Corporation.";
66 static const struct ixgbevf_info
*ixgbevf_info_tbl
[] = {
67 [board_82599_vf
] = &ixgbevf_82599_vf_info
,
68 [board_X540_vf
] = &ixgbevf_X540_vf_info
,
71 /* ixgbevf_pci_tbl - PCI Device ID Table
73 * Wildcard entries (PCI_ANY_ID) should come last
74 * Last entry must be all 0s
76 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
77 * Class, Class Mask, private data (not used) }
79 static struct pci_device_id ixgbevf_pci_tbl
[] = {
80 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_VF
),
82 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X540_VF
),
85 /* required last entry */
88 MODULE_DEVICE_TABLE(pci
, ixgbevf_pci_tbl
);
90 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
91 MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
92 MODULE_LICENSE("GPL");
93 MODULE_VERSION(DRV_VERSION
);
95 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
96 static int debug
= -1;
97 module_param(debug
, int, 0);
98 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
101 static void ixgbevf_set_itr(struct ixgbevf_q_vector
*q_vector
);
102 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
);
104 static inline void ixgbevf_release_rx_desc(struct ixgbe_hw
*hw
,
105 struct ixgbevf_ring
*rx_ring
,
109 * Force memory writes to complete before letting h/w
110 * know there are new descriptors to fetch. (Only
111 * applicable for weak-ordered memory model archs,
115 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(rx_ring
->reg_idx
), val
);
119 * ixgbevf_set_ivar - set IVAR registers - maps interrupt causes to vectors
120 * @adapter: pointer to adapter struct
121 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
122 * @queue: queue to map the corresponding interrupt to
123 * @msix_vector: the vector to map to the corresponding queue
126 static void ixgbevf_set_ivar(struct ixgbevf_adapter
*adapter
, s8 direction
,
127 u8 queue
, u8 msix_vector
)
130 struct ixgbe_hw
*hw
= &adapter
->hw
;
131 if (direction
== -1) {
133 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
134 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR_MISC
);
137 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR_MISC
, ivar
);
139 /* tx or rx causes */
140 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
141 index
= ((16 * (queue
& 1)) + (8 * direction
));
142 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR(queue
>> 1));
143 ivar
&= ~(0xFF << index
);
144 ivar
|= (msix_vector
<< index
);
145 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR(queue
>> 1), ivar
);
149 static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_ring
*tx_ring
,
150 struct ixgbevf_tx_buffer
153 if (tx_buffer_info
->dma
) {
154 if (tx_buffer_info
->mapped_as_page
)
155 dma_unmap_page(tx_ring
->dev
,
157 tx_buffer_info
->length
,
160 dma_unmap_single(tx_ring
->dev
,
162 tx_buffer_info
->length
,
164 tx_buffer_info
->dma
= 0;
166 if (tx_buffer_info
->skb
) {
167 dev_kfree_skb_any(tx_buffer_info
->skb
);
168 tx_buffer_info
->skb
= NULL
;
170 tx_buffer_info
->time_stamp
= 0;
171 /* tx_buffer_info must be completely set up in the transmit path */
174 #define IXGBE_MAX_TXD_PWR 14
175 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
177 /* Tx Descriptors needed, worst case */
178 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IXGBE_MAX_DATA_PER_TXD)
179 #define DESC_NEEDED (MAX_SKB_FRAGS + 4)
181 static void ixgbevf_tx_timeout(struct net_device
*netdev
);
184 * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
185 * @q_vector: board private structure
186 * @tx_ring: tx ring to clean
188 static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector
*q_vector
,
189 struct ixgbevf_ring
*tx_ring
)
191 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
192 union ixgbe_adv_tx_desc
*tx_desc
, *eop_desc
;
193 struct ixgbevf_tx_buffer
*tx_buffer_info
;
194 unsigned int i
, eop
, count
= 0;
195 unsigned int total_bytes
= 0, total_packets
= 0;
197 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
200 i
= tx_ring
->next_to_clean
;
201 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
202 eop_desc
= IXGBEVF_TX_DESC(tx_ring
, eop
);
204 while ((eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)) &&
205 (count
< tx_ring
->count
)) {
206 bool cleaned
= false;
207 rmb(); /* read buffer_info after eop_desc */
208 /* eop could change between read and DD-check */
209 if (unlikely(eop
!= tx_ring
->tx_buffer_info
[i
].next_to_watch
))
211 for ( ; !cleaned
; count
++) {
213 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
214 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
215 cleaned
= (i
== eop
);
216 skb
= tx_buffer_info
->skb
;
218 if (cleaned
&& skb
) {
219 unsigned int segs
, bytecount
;
221 /* gso_segs is currently only valid for tcp */
222 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
223 /* multiply data chunks by size of headers */
224 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
226 total_packets
+= segs
;
227 total_bytes
+= bytecount
;
230 ixgbevf_unmap_and_free_tx_resource(tx_ring
,
233 tx_desc
->wb
.status
= 0;
236 if (i
== tx_ring
->count
)
241 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
242 eop_desc
= IXGBEVF_TX_DESC(tx_ring
, eop
);
245 tx_ring
->next_to_clean
= i
;
247 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
248 if (unlikely(count
&& netif_carrier_ok(tx_ring
->netdev
) &&
249 (IXGBE_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
250 /* Make sure that anybody stopping the queue after this
251 * sees the new next_to_clean.
254 if (__netif_subqueue_stopped(tx_ring
->netdev
,
255 tx_ring
->queue_index
) &&
256 !test_bit(__IXGBEVF_DOWN
, &adapter
->state
)) {
257 netif_wake_subqueue(tx_ring
->netdev
,
258 tx_ring
->queue_index
);
259 ++adapter
->restart_queue
;
263 u64_stats_update_begin(&tx_ring
->syncp
);
264 tx_ring
->total_bytes
+= total_bytes
;
265 tx_ring
->total_packets
+= total_packets
;
266 u64_stats_update_end(&tx_ring
->syncp
);
267 q_vector
->tx
.total_bytes
+= total_bytes
;
268 q_vector
->tx
.total_packets
+= total_packets
;
270 return count
< tx_ring
->count
;
274 * ixgbevf_receive_skb - Send a completed packet up the stack
275 * @q_vector: structure containing interrupt and ring information
276 * @skb: packet to send up
277 * @status: hardware indication of status of receive
278 * @rx_desc: rx descriptor
280 static void ixgbevf_receive_skb(struct ixgbevf_q_vector
*q_vector
,
281 struct sk_buff
*skb
, u8 status
,
282 union ixgbe_adv_rx_desc
*rx_desc
)
284 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
285 bool is_vlan
= (status
& IXGBE_RXD_STAT_VP
);
286 u16 tag
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
288 if (is_vlan
&& test_bit(tag
& VLAN_VID_MASK
, adapter
->active_vlans
))
289 __vlan_hwaccel_put_tag(skb
, tag
);
291 if (!(adapter
->flags
& IXGBE_FLAG_IN_NETPOLL
))
292 napi_gro_receive(&q_vector
->napi
, skb
);
298 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
299 * @adapter: address of board private structure
300 * @status_err: hardware indication of status of receive
301 * @skb: skb currently being received and modified
303 static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter
*adapter
,
304 struct ixgbevf_ring
*ring
,
305 u32 status_err
, struct sk_buff
*skb
)
307 skb_checksum_none_assert(skb
);
309 /* Rx csum disabled */
310 if (!(ring
->netdev
->features
& NETIF_F_RXCSUM
))
313 /* if IP and error */
314 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
315 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
316 adapter
->hw_csum_rx_error
++;
320 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
323 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
324 adapter
->hw_csum_rx_error
++;
328 /* It must be a TCP or UDP packet with a valid checksum */
329 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
330 adapter
->hw_csum_rx_good
++;
334 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
335 * @adapter: address of board private structure
337 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter
*adapter
,
338 struct ixgbevf_ring
*rx_ring
,
341 struct pci_dev
*pdev
= adapter
->pdev
;
342 union ixgbe_adv_rx_desc
*rx_desc
;
343 struct ixgbevf_rx_buffer
*bi
;
345 unsigned int i
= rx_ring
->next_to_use
;
347 bi
= &rx_ring
->rx_buffer_info
[i
];
349 while (cleaned_count
--) {
350 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
353 skb
= netdev_alloc_skb_ip_align(rx_ring
->netdev
,
354 rx_ring
->rx_buf_len
);
356 adapter
->alloc_rx_buff_failed
++;
362 bi
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
365 if (dma_mapping_error(&pdev
->dev
, bi
->dma
)) {
368 dev_err(&pdev
->dev
, "RX DMA map failed\n");
372 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
375 if (i
== rx_ring
->count
)
377 bi
= &rx_ring
->rx_buffer_info
[i
];
381 if (rx_ring
->next_to_use
!= i
) {
382 rx_ring
->next_to_use
= i
;
384 ixgbevf_release_rx_desc(&adapter
->hw
, rx_ring
, i
);
388 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter
*adapter
,
391 struct ixgbe_hw
*hw
= &adapter
->hw
;
393 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, qmask
);
396 static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector
*q_vector
,
397 struct ixgbevf_ring
*rx_ring
,
400 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
401 struct pci_dev
*pdev
= adapter
->pdev
;
402 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
403 struct ixgbevf_rx_buffer
*rx_buffer_info
, *next_buffer
;
407 int cleaned_count
= 0;
408 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
410 i
= rx_ring
->next_to_clean
;
411 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
412 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
413 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
415 while (staterr
& IXGBE_RXD_STAT_DD
) {
420 rmb(); /* read descriptor and rx_buffer_info after status DD */
421 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
422 skb
= rx_buffer_info
->skb
;
423 prefetch(skb
->data
- NET_IP_ALIGN
);
424 rx_buffer_info
->skb
= NULL
;
426 if (rx_buffer_info
->dma
) {
427 dma_unmap_single(&pdev
->dev
, rx_buffer_info
->dma
,
430 rx_buffer_info
->dma
= 0;
435 if (i
== rx_ring
->count
)
438 next_rxd
= IXGBEVF_RX_DESC(rx_ring
, i
);
442 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
444 if (!(staterr
& IXGBE_RXD_STAT_EOP
)) {
445 skb
->next
= next_buffer
->skb
;
446 IXGBE_CB(skb
->next
)->prev
= skb
;
447 adapter
->non_eop_descs
++;
451 /* we should not be chaining buffers, if we did drop the skb */
452 if (IXGBE_CB(skb
)->prev
) {
454 struct sk_buff
*this = skb
;
455 skb
= IXGBE_CB(skb
)->prev
;
461 /* ERR_MASK will only have valid bits if EOP set */
462 if (unlikely(staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
)) {
463 dev_kfree_skb_irq(skb
);
467 ixgbevf_rx_checksum(adapter
, rx_ring
, staterr
, skb
);
469 /* probably a little skewed due to removing CRC */
470 total_rx_bytes
+= skb
->len
;
474 * Work around issue of some types of VM to VM loop back
475 * packets not getting split correctly
477 if (staterr
& IXGBE_RXD_STAT_LB
) {
478 u32 header_fixup_len
= skb_headlen(skb
);
479 if (header_fixup_len
< 14)
480 skb_push(skb
, header_fixup_len
);
482 skb
->protocol
= eth_type_trans(skb
, rx_ring
->netdev
);
484 /* Workaround hardware that can't do proper VEPA multicast
487 if ((skb
->pkt_type
& (PACKET_BROADCAST
| PACKET_MULTICAST
)) &&
488 !(compare_ether_addr(adapter
->netdev
->dev_addr
,
489 eth_hdr(skb
)->h_source
))) {
490 dev_kfree_skb_irq(skb
);
494 ixgbevf_receive_skb(q_vector
, skb
, staterr
, rx_desc
);
497 rx_desc
->wb
.upper
.status_error
= 0;
499 /* return some buffers to hardware, one at a time is too slow */
500 if (cleaned_count
>= IXGBEVF_RX_BUFFER_WRITE
) {
501 ixgbevf_alloc_rx_buffers(adapter
, rx_ring
,
506 /* use prefetched values */
508 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
510 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
513 rx_ring
->next_to_clean
= i
;
514 cleaned_count
= IXGBE_DESC_UNUSED(rx_ring
);
517 ixgbevf_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
519 u64_stats_update_begin(&rx_ring
->syncp
);
520 rx_ring
->total_packets
+= total_rx_packets
;
521 rx_ring
->total_bytes
+= total_rx_bytes
;
522 u64_stats_update_end(&rx_ring
->syncp
);
523 q_vector
->rx
.total_packets
+= total_rx_packets
;
524 q_vector
->rx
.total_bytes
+= total_rx_bytes
;
530 * ixgbevf_poll - NAPI polling calback
531 * @napi: napi struct with our devices info in it
532 * @budget: amount of work driver is allowed to do this pass, in packets
534 * This function will clean more than one or more rings associated with a
537 static int ixgbevf_poll(struct napi_struct
*napi
, int budget
)
539 struct ixgbevf_q_vector
*q_vector
=
540 container_of(napi
, struct ixgbevf_q_vector
, napi
);
541 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
542 struct ixgbevf_ring
*ring
;
544 bool clean_complete
= true;
546 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
547 clean_complete
&= ixgbevf_clean_tx_irq(q_vector
, ring
);
549 /* attempt to distribute budget to each queue fairly, but don't allow
550 * the budget to go below 1 because we'll exit polling */
551 if (q_vector
->rx
.count
> 1)
552 per_ring_budget
= max(budget
/q_vector
->rx
.count
, 1);
554 per_ring_budget
= budget
;
556 adapter
->flags
|= IXGBE_FLAG_IN_NETPOLL
;
557 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
558 clean_complete
&= ixgbevf_clean_rx_irq(q_vector
, ring
,
560 adapter
->flags
&= ~IXGBE_FLAG_IN_NETPOLL
;
562 /* If all work not completed, return budget and keep polling */
565 /* all work done, exit the polling mode */
567 if (adapter
->rx_itr_setting
& 1)
568 ixgbevf_set_itr(q_vector
);
569 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
570 ixgbevf_irq_enable_queues(adapter
,
571 1 << q_vector
->v_idx
);
577 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
578 * @q_vector: structure containing interrupt and ring information
580 static void ixgbevf_write_eitr(struct ixgbevf_q_vector
*q_vector
)
582 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
583 struct ixgbe_hw
*hw
= &adapter
->hw
;
584 int v_idx
= q_vector
->v_idx
;
585 u32 itr_reg
= q_vector
->itr
& IXGBE_MAX_EITR
;
588 * set the WDIS bit to not clear the timer bits and cause an
589 * immediate assertion of the interrupt
591 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
593 IXGBE_WRITE_REG(hw
, IXGBE_VTEITR(v_idx
), itr_reg
);
597 * ixgbevf_configure_msix - Configure MSI-X hardware
598 * @adapter: board private structure
600 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
603 static void ixgbevf_configure_msix(struct ixgbevf_adapter
*adapter
)
605 struct ixgbevf_q_vector
*q_vector
;
606 int q_vectors
, v_idx
;
608 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
609 adapter
->eims_enable_mask
= 0;
612 * Populate the IVAR table and set the ITR values to the
613 * corresponding register.
615 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
616 struct ixgbevf_ring
*ring
;
617 q_vector
= adapter
->q_vector
[v_idx
];
619 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
620 ixgbevf_set_ivar(adapter
, 0, ring
->reg_idx
, v_idx
);
622 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
623 ixgbevf_set_ivar(adapter
, 1, ring
->reg_idx
, v_idx
);
625 if (q_vector
->tx
.ring
&& !q_vector
->rx
.ring
) {
627 if (adapter
->tx_itr_setting
== 1)
628 q_vector
->itr
= IXGBE_10K_ITR
;
630 q_vector
->itr
= adapter
->tx_itr_setting
;
632 /* rx or rx/tx vector */
633 if (adapter
->rx_itr_setting
== 1)
634 q_vector
->itr
= IXGBE_20K_ITR
;
636 q_vector
->itr
= adapter
->rx_itr_setting
;
639 /* add q_vector eims value to global eims_enable_mask */
640 adapter
->eims_enable_mask
|= 1 << v_idx
;
642 ixgbevf_write_eitr(q_vector
);
645 ixgbevf_set_ivar(adapter
, -1, 1, v_idx
);
646 /* setup eims_other and add value to global eims_enable_mask */
647 adapter
->eims_other
= 1 << v_idx
;
648 adapter
->eims_enable_mask
|= adapter
->eims_other
;
655 latency_invalid
= 255
659 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
660 * @q_vector: structure containing interrupt and ring information
661 * @ring_container: structure containing ring performance data
663 * Stores a new ITR value based on packets and byte
664 * counts during the last interrupt. The advantage of per interrupt
665 * computation is faster updates and more accurate ITR for the current
666 * traffic pattern. Constants in this function were computed
667 * based on theoretical maximum wire speed and thresholds were set based
668 * on testing data as well as attempting to minimize response time
669 * while increasing bulk throughput.
671 static void ixgbevf_update_itr(struct ixgbevf_q_vector
*q_vector
,
672 struct ixgbevf_ring_container
*ring_container
)
674 int bytes
= ring_container
->total_bytes
;
675 int packets
= ring_container
->total_packets
;
678 u8 itr_setting
= ring_container
->itr
;
683 /* simple throttlerate management
684 * 0-20MB/s lowest (100000 ints/s)
685 * 20-100MB/s low (20000 ints/s)
686 * 100-1249MB/s bulk (8000 ints/s)
688 /* what was last interrupt timeslice? */
689 timepassed_us
= q_vector
->itr
>> 2;
690 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
692 switch (itr_setting
) {
694 if (bytes_perint
> 10)
695 itr_setting
= low_latency
;
698 if (bytes_perint
> 20)
699 itr_setting
= bulk_latency
;
700 else if (bytes_perint
<= 10)
701 itr_setting
= lowest_latency
;
704 if (bytes_perint
<= 20)
705 itr_setting
= low_latency
;
709 /* clear work counters since we have the values we need */
710 ring_container
->total_bytes
= 0;
711 ring_container
->total_packets
= 0;
713 /* write updated itr to ring container */
714 ring_container
->itr
= itr_setting
;
717 static void ixgbevf_set_itr(struct ixgbevf_q_vector
*q_vector
)
719 u32 new_itr
= q_vector
->itr
;
722 ixgbevf_update_itr(q_vector
, &q_vector
->tx
);
723 ixgbevf_update_itr(q_vector
, &q_vector
->rx
);
725 current_itr
= max(q_vector
->rx
.itr
, q_vector
->tx
.itr
);
727 switch (current_itr
) {
728 /* counts and packets in update_itr are dependent on these numbers */
730 new_itr
= IXGBE_100K_ITR
;
733 new_itr
= IXGBE_20K_ITR
;
737 new_itr
= IXGBE_8K_ITR
;
741 if (new_itr
!= q_vector
->itr
) {
742 /* do an exponential smoothing */
743 new_itr
= (10 * new_itr
* q_vector
->itr
) /
744 ((9 * new_itr
) + q_vector
->itr
);
746 /* save the algorithm value here */
747 q_vector
->itr
= new_itr
;
749 ixgbevf_write_eitr(q_vector
);
753 static irqreturn_t
ixgbevf_msix_other(int irq
, void *data
)
755 struct ixgbevf_adapter
*adapter
= data
;
756 struct ixgbe_hw
*hw
= &adapter
->hw
;
758 hw
->mac
.get_link_status
= 1;
760 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
761 mod_timer(&adapter
->watchdog_timer
, jiffies
);
763 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_other
);
770 * ixgbevf_msix_clean_rings - single unshared vector rx clean (all queues)
772 * @data: pointer to our q_vector struct for this interrupt vector
774 static irqreturn_t
ixgbevf_msix_clean_rings(int irq
, void *data
)
776 struct ixgbevf_q_vector
*q_vector
= data
;
778 /* EIAM disabled interrupts (on this vector) for us */
779 if (q_vector
->rx
.ring
|| q_vector
->tx
.ring
)
780 napi_schedule(&q_vector
->napi
);
785 static inline void map_vector_to_rxq(struct ixgbevf_adapter
*a
, int v_idx
,
788 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
790 a
->rx_ring
[r_idx
].next
= q_vector
->rx
.ring
;
791 q_vector
->rx
.ring
= &a
->rx_ring
[r_idx
];
792 q_vector
->rx
.count
++;
795 static inline void map_vector_to_txq(struct ixgbevf_adapter
*a
, int v_idx
,
798 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
800 a
->tx_ring
[t_idx
].next
= q_vector
->tx
.ring
;
801 q_vector
->tx
.ring
= &a
->tx_ring
[t_idx
];
802 q_vector
->tx
.count
++;
806 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
807 * @adapter: board private structure to initialize
809 * This function maps descriptor rings to the queue-specific vectors
810 * we were allotted through the MSI-X enabling code. Ideally, we'd have
811 * one vector per ring/queue, but on a constrained vector budget, we
812 * group the rings as "efficiently" as possible. You would add new
813 * mapping configurations in here.
815 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter
*adapter
)
819 int rxr_idx
= 0, txr_idx
= 0;
820 int rxr_remaining
= adapter
->num_rx_queues
;
821 int txr_remaining
= adapter
->num_tx_queues
;
826 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
829 * The ideal configuration...
830 * We have enough vectors to map one per queue.
832 if (q_vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
833 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
834 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
836 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
837 map_vector_to_txq(adapter
, v_start
, txr_idx
);
842 * If we don't have enough vectors for a 1-to-1
843 * mapping, we'll have to group them so there are
844 * multiple queues per vector.
846 /* Re-adjusting *qpv takes care of the remainder. */
847 for (i
= v_start
; i
< q_vectors
; i
++) {
848 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
849 for (j
= 0; j
< rqpv
; j
++) {
850 map_vector_to_rxq(adapter
, i
, rxr_idx
);
855 for (i
= v_start
; i
< q_vectors
; i
++) {
856 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
857 for (j
= 0; j
< tqpv
; j
++) {
858 map_vector_to_txq(adapter
, i
, txr_idx
);
869 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
870 * @adapter: board private structure
872 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
873 * interrupts from the kernel.
875 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter
*adapter
)
877 struct net_device
*netdev
= adapter
->netdev
;
878 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
882 for (vector
= 0; vector
< q_vectors
; vector
++) {
883 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[vector
];
884 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
886 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
887 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
888 "%s-%s-%d", netdev
->name
, "TxRx", ri
++);
890 } else if (q_vector
->rx
.ring
) {
891 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
892 "%s-%s-%d", netdev
->name
, "rx", ri
++);
893 } else if (q_vector
->tx
.ring
) {
894 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
895 "%s-%s-%d", netdev
->name
, "tx", ti
++);
897 /* skip this unused q_vector */
900 err
= request_irq(entry
->vector
, &ixgbevf_msix_clean_rings
, 0,
901 q_vector
->name
, q_vector
);
904 "request_irq failed for MSIX interrupt "
906 goto free_queue_irqs
;
910 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
911 &ixgbevf_msix_other
, 0, netdev
->name
, adapter
);
914 "request_irq for msix_other failed: %d\n", err
);
915 goto free_queue_irqs
;
923 free_irq(adapter
->msix_entries
[vector
].vector
,
924 adapter
->q_vector
[vector
]);
926 pci_disable_msix(adapter
->pdev
);
927 kfree(adapter
->msix_entries
);
928 adapter
->msix_entries
= NULL
;
932 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter
*adapter
)
934 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
936 for (i
= 0; i
< q_vectors
; i
++) {
937 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[i
];
938 q_vector
->rx
.ring
= NULL
;
939 q_vector
->tx
.ring
= NULL
;
940 q_vector
->rx
.count
= 0;
941 q_vector
->tx
.count
= 0;
946 * ixgbevf_request_irq - initialize interrupts
947 * @adapter: board private structure
949 * Attempts to configure interrupts using the best available
950 * capabilities of the hardware and kernel.
952 static int ixgbevf_request_irq(struct ixgbevf_adapter
*adapter
)
956 err
= ixgbevf_request_msix_irqs(adapter
);
960 "request_irq failed, Error %d\n", err
);
965 static void ixgbevf_free_irq(struct ixgbevf_adapter
*adapter
)
969 q_vectors
= adapter
->num_msix_vectors
;
972 free_irq(adapter
->msix_entries
[i
].vector
, adapter
);
975 for (; i
>= 0; i
--) {
976 /* free only the irqs that were actually requested */
977 if (!adapter
->q_vector
[i
]->rx
.ring
&&
978 !adapter
->q_vector
[i
]->tx
.ring
)
981 free_irq(adapter
->msix_entries
[i
].vector
,
982 adapter
->q_vector
[i
]);
985 ixgbevf_reset_q_vectors(adapter
);
989 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
990 * @adapter: board private structure
992 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter
*adapter
)
994 struct ixgbe_hw
*hw
= &adapter
->hw
;
997 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, 0);
998 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMC
, ~0);
999 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, 0);
1001 IXGBE_WRITE_FLUSH(hw
);
1003 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
1004 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1008 * ixgbevf_irq_enable - Enable default interrupt generation settings
1009 * @adapter: board private structure
1011 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter
*adapter
)
1013 struct ixgbe_hw
*hw
= &adapter
->hw
;
1015 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, adapter
->eims_enable_mask
);
1016 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, adapter
->eims_enable_mask
);
1017 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_enable_mask
);
1021 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1022 * @adapter: board private structure
1024 * Configure the Tx unit of the MAC after a reset.
1026 static void ixgbevf_configure_tx(struct ixgbevf_adapter
*adapter
)
1029 struct ixgbe_hw
*hw
= &adapter
->hw
;
1030 u32 i
, j
, tdlen
, txctrl
;
1032 /* Setup the HW Tx Head and Tail descriptor pointers */
1033 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1034 struct ixgbevf_ring
*ring
= &adapter
->tx_ring
[i
];
1037 tdlen
= ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
1038 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAL(j
),
1039 (tdba
& DMA_BIT_MASK(32)));
1040 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAH(j
), (tdba
>> 32));
1041 IXGBE_WRITE_REG(hw
, IXGBE_VFTDLEN(j
), tdlen
);
1042 IXGBE_WRITE_REG(hw
, IXGBE_VFTDH(j
), 0);
1043 IXGBE_WRITE_REG(hw
, IXGBE_VFTDT(j
), 0);
1044 adapter
->tx_ring
[i
].head
= IXGBE_VFTDH(j
);
1045 adapter
->tx_ring
[i
].tail
= IXGBE_VFTDT(j
);
1046 /* Disable Tx Head Writeback RO bit, since this hoses
1047 * bookkeeping if things aren't delivered in order.
1049 txctrl
= IXGBE_READ_REG(hw
, IXGBE_VFDCA_TXCTRL(j
));
1050 txctrl
&= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN
;
1051 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_TXCTRL(j
), txctrl
);
1055 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1057 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter
*adapter
, int index
)
1059 struct ixgbevf_ring
*rx_ring
;
1060 struct ixgbe_hw
*hw
= &adapter
->hw
;
1063 rx_ring
= &adapter
->rx_ring
[index
];
1065 srrctl
= IXGBE_SRRCTL_DROP_EN
;
1067 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1069 srrctl
|= ALIGN(rx_ring
->rx_buf_len
, 1024) >>
1070 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1072 IXGBE_WRITE_REG(hw
, IXGBE_VFSRRCTL(index
), srrctl
);
1075 static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter
*adapter
)
1077 struct ixgbe_hw
*hw
= &adapter
->hw
;
1078 struct net_device
*netdev
= adapter
->netdev
;
1079 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1083 /* notify the PF of our intent to use this size of frame */
1084 ixgbevf_rlpml_set_vf(hw
, max_frame
);
1086 /* PF will allow an extra 4 bytes past for vlan tagged frames */
1087 max_frame
+= VLAN_HLEN
;
1090 * Allocate buffer sizes that fit well into 32K and
1091 * take into account max frame size of 9.5K
1093 if ((hw
->mac
.type
== ixgbe_mac_X540_vf
) &&
1094 (max_frame
<= MAXIMUM_ETHERNET_VLAN_SIZE
))
1095 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1096 else if (max_frame
<= IXGBEVF_RXBUFFER_2K
)
1097 rx_buf_len
= IXGBEVF_RXBUFFER_2K
;
1098 else if (max_frame
<= IXGBEVF_RXBUFFER_4K
)
1099 rx_buf_len
= IXGBEVF_RXBUFFER_4K
;
1100 else if (max_frame
<= IXGBEVF_RXBUFFER_8K
)
1101 rx_buf_len
= IXGBEVF_RXBUFFER_8K
;
1103 rx_buf_len
= IXGBEVF_RXBUFFER_10K
;
1105 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1106 adapter
->rx_ring
[i
].rx_buf_len
= rx_buf_len
;
1110 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1111 * @adapter: board private structure
1113 * Configure the Rx unit of the MAC after a reset.
1115 static void ixgbevf_configure_rx(struct ixgbevf_adapter
*adapter
)
1118 struct ixgbe_hw
*hw
= &adapter
->hw
;
1122 /* PSRTYPE must be initialized in 82599 */
1123 IXGBE_WRITE_REG(hw
, IXGBE_VFPSRTYPE
, 0);
1125 /* set_rx_buffer_len must be called before ring initialization */
1126 ixgbevf_set_rx_buffer_len(adapter
);
1128 rdlen
= adapter
->rx_ring
[0].count
* sizeof(union ixgbe_adv_rx_desc
);
1129 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1130 * the Base and Length of the Rx Descriptor Ring */
1131 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1132 rdba
= adapter
->rx_ring
[i
].dma
;
1133 j
= adapter
->rx_ring
[i
].reg_idx
;
1134 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAL(j
),
1135 (rdba
& DMA_BIT_MASK(32)));
1136 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAH(j
), (rdba
>> 32));
1137 IXGBE_WRITE_REG(hw
, IXGBE_VFRDLEN(j
), rdlen
);
1138 IXGBE_WRITE_REG(hw
, IXGBE_VFRDH(j
), 0);
1139 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(j
), 0);
1140 adapter
->rx_ring
[i
].head
= IXGBE_VFRDH(j
);
1141 adapter
->rx_ring
[i
].tail
= IXGBE_VFRDT(j
);
1143 ixgbevf_configure_srrctl(adapter
, j
);
1147 static int ixgbevf_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1149 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1150 struct ixgbe_hw
*hw
= &adapter
->hw
;
1153 if (!hw
->mac
.ops
.set_vfta
)
1156 spin_lock_bh(&adapter
->mbx_lock
);
1158 /* add VID to filter table */
1159 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, true);
1161 spin_unlock_bh(&adapter
->mbx_lock
);
1163 /* translate error return types so error makes sense */
1164 if (err
== IXGBE_ERR_MBX
)
1167 if (err
== IXGBE_ERR_INVALID_ARGUMENT
)
1170 set_bit(vid
, adapter
->active_vlans
);
1175 static int ixgbevf_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1177 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1178 struct ixgbe_hw
*hw
= &adapter
->hw
;
1179 int err
= -EOPNOTSUPP
;
1181 spin_lock_bh(&adapter
->mbx_lock
);
1183 /* remove VID from filter table */
1184 if (hw
->mac
.ops
.set_vfta
)
1185 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, false);
1187 spin_unlock_bh(&adapter
->mbx_lock
);
1189 clear_bit(vid
, adapter
->active_vlans
);
1194 static void ixgbevf_restore_vlan(struct ixgbevf_adapter
*adapter
)
1198 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
1199 ixgbevf_vlan_rx_add_vid(adapter
->netdev
, vid
);
1202 static int ixgbevf_write_uc_addr_list(struct net_device
*netdev
)
1204 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1205 struct ixgbe_hw
*hw
= &adapter
->hw
;
1208 if ((netdev_uc_count(netdev
)) > 10) {
1209 pr_err("Too many unicast filters - No Space\n");
1213 if (!netdev_uc_empty(netdev
)) {
1214 struct netdev_hw_addr
*ha
;
1215 netdev_for_each_uc_addr(ha
, netdev
) {
1216 hw
->mac
.ops
.set_uc_addr(hw
, ++count
, ha
->addr
);
1221 * If the list is empty then send message to PF driver to
1222 * clear all macvlans on this VF.
1224 hw
->mac
.ops
.set_uc_addr(hw
, 0, NULL
);
1231 * ixgbevf_set_rx_mode - Multicast set
1232 * @netdev: network interface device structure
1234 * The set_rx_method entry point is called whenever the multicast address
1235 * list or the network interface flags are updated. This routine is
1236 * responsible for configuring the hardware for proper multicast mode.
1238 static void ixgbevf_set_rx_mode(struct net_device
*netdev
)
1240 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1241 struct ixgbe_hw
*hw
= &adapter
->hw
;
1243 spin_lock_bh(&adapter
->mbx_lock
);
1245 /* reprogram multicast list */
1246 if (hw
->mac
.ops
.update_mc_addr_list
)
1247 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
1249 ixgbevf_write_uc_addr_list(netdev
);
1251 spin_unlock_bh(&adapter
->mbx_lock
);
1254 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter
*adapter
)
1257 struct ixgbevf_q_vector
*q_vector
;
1258 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1260 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1261 q_vector
= adapter
->q_vector
[q_idx
];
1262 napi_enable(&q_vector
->napi
);
1266 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter
*adapter
)
1269 struct ixgbevf_q_vector
*q_vector
;
1270 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1272 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1273 q_vector
= adapter
->q_vector
[q_idx
];
1274 napi_disable(&q_vector
->napi
);
1278 static void ixgbevf_configure(struct ixgbevf_adapter
*adapter
)
1280 struct net_device
*netdev
= adapter
->netdev
;
1283 ixgbevf_set_rx_mode(netdev
);
1285 ixgbevf_restore_vlan(adapter
);
1287 ixgbevf_configure_tx(adapter
);
1288 ixgbevf_configure_rx(adapter
);
1289 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1290 struct ixgbevf_ring
*ring
= &adapter
->rx_ring
[i
];
1291 ixgbevf_alloc_rx_buffers(adapter
, ring
,
1292 IXGBE_DESC_UNUSED(ring
));
1296 #define IXGBE_MAX_RX_DESC_POLL 10
1297 static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter
*adapter
,
1300 struct ixgbe_hw
*hw
= &adapter
->hw
;
1301 int j
= adapter
->rx_ring
[rxr
].reg_idx
;
1304 for (k
= 0; k
< IXGBE_MAX_RX_DESC_POLL
; k
++) {
1305 if (IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
)) & IXGBE_RXDCTL_ENABLE
)
1310 if (k
>= IXGBE_MAX_RX_DESC_POLL
) {
1311 hw_dbg(hw
, "RXDCTL.ENABLE on Rx queue %d "
1312 "not set within the polling period\n", rxr
);
1315 ixgbevf_release_rx_desc(&adapter
->hw
, &adapter
->rx_ring
[rxr
],
1316 (adapter
->rx_ring
[rxr
].count
- 1));
1319 static void ixgbevf_save_reset_stats(struct ixgbevf_adapter
*adapter
)
1321 /* Only save pre-reset stats if there are some */
1322 if (adapter
->stats
.vfgprc
|| adapter
->stats
.vfgptc
) {
1323 adapter
->stats
.saved_reset_vfgprc
+= adapter
->stats
.vfgprc
-
1324 adapter
->stats
.base_vfgprc
;
1325 adapter
->stats
.saved_reset_vfgptc
+= adapter
->stats
.vfgptc
-
1326 adapter
->stats
.base_vfgptc
;
1327 adapter
->stats
.saved_reset_vfgorc
+= adapter
->stats
.vfgorc
-
1328 adapter
->stats
.base_vfgorc
;
1329 adapter
->stats
.saved_reset_vfgotc
+= adapter
->stats
.vfgotc
-
1330 adapter
->stats
.base_vfgotc
;
1331 adapter
->stats
.saved_reset_vfmprc
+= adapter
->stats
.vfmprc
-
1332 adapter
->stats
.base_vfmprc
;
1336 static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter
*adapter
)
1338 struct ixgbe_hw
*hw
= &adapter
->hw
;
1340 adapter
->stats
.last_vfgprc
= IXGBE_READ_REG(hw
, IXGBE_VFGPRC
);
1341 adapter
->stats
.last_vfgorc
= IXGBE_READ_REG(hw
, IXGBE_VFGORC_LSB
);
1342 adapter
->stats
.last_vfgorc
|=
1343 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGORC_MSB
))) << 32);
1344 adapter
->stats
.last_vfgptc
= IXGBE_READ_REG(hw
, IXGBE_VFGPTC
);
1345 adapter
->stats
.last_vfgotc
= IXGBE_READ_REG(hw
, IXGBE_VFGOTC_LSB
);
1346 adapter
->stats
.last_vfgotc
|=
1347 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGOTC_MSB
))) << 32);
1348 adapter
->stats
.last_vfmprc
= IXGBE_READ_REG(hw
, IXGBE_VFMPRC
);
1350 adapter
->stats
.base_vfgprc
= adapter
->stats
.last_vfgprc
;
1351 adapter
->stats
.base_vfgorc
= adapter
->stats
.last_vfgorc
;
1352 adapter
->stats
.base_vfgptc
= adapter
->stats
.last_vfgptc
;
1353 adapter
->stats
.base_vfgotc
= adapter
->stats
.last_vfgotc
;
1354 adapter
->stats
.base_vfmprc
= adapter
->stats
.last_vfmprc
;
1357 static void ixgbevf_negotiate_api(struct ixgbevf_adapter
*adapter
)
1359 struct ixgbe_hw
*hw
= &adapter
->hw
;
1360 int api
[] = { ixgbe_mbox_api_11
,
1362 ixgbe_mbox_api_unknown
};
1363 int err
= 0, idx
= 0;
1365 spin_lock_bh(&adapter
->mbx_lock
);
1367 while (api
[idx
] != ixgbe_mbox_api_unknown
) {
1368 err
= ixgbevf_negotiate_api_version(hw
, api
[idx
]);
1374 spin_unlock_bh(&adapter
->mbx_lock
);
1377 static void ixgbevf_up_complete(struct ixgbevf_adapter
*adapter
)
1379 struct net_device
*netdev
= adapter
->netdev
;
1380 struct ixgbe_hw
*hw
= &adapter
->hw
;
1382 int num_rx_rings
= adapter
->num_rx_queues
;
1385 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1386 j
= adapter
->tx_ring
[i
].reg_idx
;
1387 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1388 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
1389 txdctl
|= (8 << 16);
1390 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
), txdctl
);
1393 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1394 j
= adapter
->tx_ring
[i
].reg_idx
;
1395 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1396 txdctl
|= IXGBE_TXDCTL_ENABLE
;
1397 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
), txdctl
);
1400 for (i
= 0; i
< num_rx_rings
; i
++) {
1401 j
= adapter
->rx_ring
[i
].reg_idx
;
1402 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
));
1403 rxdctl
|= IXGBE_RXDCTL_ENABLE
| IXGBE_RXDCTL_VME
;
1404 if (hw
->mac
.type
== ixgbe_mac_X540_vf
) {
1405 rxdctl
&= ~IXGBE_RXDCTL_RLPMLMASK
;
1406 rxdctl
|= ((netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
) |
1407 IXGBE_RXDCTL_RLPML_EN
);
1409 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(j
), rxdctl
);
1410 ixgbevf_rx_desc_queue_enable(adapter
, i
);
1413 ixgbevf_configure_msix(adapter
);
1415 spin_lock_bh(&adapter
->mbx_lock
);
1417 if (hw
->mac
.ops
.set_rar
) {
1418 if (is_valid_ether_addr(hw
->mac
.addr
))
1419 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
1421 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.perm_addr
, 0);
1424 spin_unlock_bh(&adapter
->mbx_lock
);
1426 clear_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1427 ixgbevf_napi_enable_all(adapter
);
1429 /* enable transmits */
1430 netif_tx_start_all_queues(netdev
);
1432 ixgbevf_save_reset_stats(adapter
);
1433 ixgbevf_init_last_counter_stats(adapter
);
1435 hw
->mac
.get_link_status
= 1;
1436 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1439 static int ixgbevf_reset_queues(struct ixgbevf_adapter
*adapter
)
1441 struct ixgbe_hw
*hw
= &adapter
->hw
;
1442 struct ixgbevf_ring
*rx_ring
;
1443 unsigned int def_q
= 0;
1444 unsigned int num_tcs
= 0;
1445 unsigned int num_rx_queues
= 1;
1448 spin_lock_bh(&adapter
->mbx_lock
);
1450 /* fetch queue configuration from the PF */
1451 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
1453 spin_unlock_bh(&adapter
->mbx_lock
);
1459 /* update default Tx ring register index */
1460 adapter
->tx_ring
[0].reg_idx
= def_q
;
1462 /* we need as many queues as traffic classes */
1463 num_rx_queues
= num_tcs
;
1466 /* nothing to do if we have the correct number of queues */
1467 if (adapter
->num_rx_queues
== num_rx_queues
)
1470 /* allocate new rings */
1471 rx_ring
= kcalloc(num_rx_queues
,
1472 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1476 /* setup ring fields */
1477 for (i
= 0; i
< num_rx_queues
; i
++) {
1478 rx_ring
[i
].count
= adapter
->rx_ring_count
;
1479 rx_ring
[i
].queue_index
= i
;
1480 rx_ring
[i
].reg_idx
= i
;
1481 rx_ring
[i
].dev
= &adapter
->pdev
->dev
;
1482 rx_ring
[i
].netdev
= adapter
->netdev
;
1484 /* allocate resources on the ring */
1485 err
= ixgbevf_setup_rx_resources(adapter
, &rx_ring
[i
]);
1489 ixgbevf_free_rx_resources(adapter
, &rx_ring
[i
]);
1496 /* free the existing rings and queues */
1497 ixgbevf_free_all_rx_resources(adapter
);
1498 adapter
->num_rx_queues
= 0;
1499 kfree(adapter
->rx_ring
);
1501 /* move new rings into position on the adapter struct */
1502 adapter
->rx_ring
= rx_ring
;
1503 adapter
->num_rx_queues
= num_rx_queues
;
1505 /* reset ring to vector mapping */
1506 ixgbevf_reset_q_vectors(adapter
);
1507 ixgbevf_map_rings_to_vectors(adapter
);
1512 void ixgbevf_up(struct ixgbevf_adapter
*adapter
)
1514 struct ixgbe_hw
*hw
= &adapter
->hw
;
1516 ixgbevf_negotiate_api(adapter
);
1518 ixgbevf_reset_queues(adapter
);
1520 ixgbevf_configure(adapter
);
1522 ixgbevf_up_complete(adapter
);
1524 /* clear any pending interrupts, may auto mask */
1525 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
1527 ixgbevf_irq_enable(adapter
);
1531 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1532 * @adapter: board private structure
1533 * @rx_ring: ring to free buffers from
1535 static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter
*adapter
,
1536 struct ixgbevf_ring
*rx_ring
)
1538 struct pci_dev
*pdev
= adapter
->pdev
;
1542 if (!rx_ring
->rx_buffer_info
)
1545 /* Free all the Rx ring sk_buffs */
1546 for (i
= 0; i
< rx_ring
->count
; i
++) {
1547 struct ixgbevf_rx_buffer
*rx_buffer_info
;
1549 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
1550 if (rx_buffer_info
->dma
) {
1551 dma_unmap_single(&pdev
->dev
, rx_buffer_info
->dma
,
1552 rx_ring
->rx_buf_len
,
1554 rx_buffer_info
->dma
= 0;
1556 if (rx_buffer_info
->skb
) {
1557 struct sk_buff
*skb
= rx_buffer_info
->skb
;
1558 rx_buffer_info
->skb
= NULL
;
1560 struct sk_buff
*this = skb
;
1561 skb
= IXGBE_CB(skb
)->prev
;
1562 dev_kfree_skb(this);
1567 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
1568 memset(rx_ring
->rx_buffer_info
, 0, size
);
1570 /* Zero out the descriptor ring */
1571 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1573 rx_ring
->next_to_clean
= 0;
1574 rx_ring
->next_to_use
= 0;
1577 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1579 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1583 * ixgbevf_clean_tx_ring - Free Tx Buffers
1584 * @adapter: board private structure
1585 * @tx_ring: ring to be cleaned
1587 static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter
*adapter
,
1588 struct ixgbevf_ring
*tx_ring
)
1590 struct ixgbevf_tx_buffer
*tx_buffer_info
;
1594 if (!tx_ring
->tx_buffer_info
)
1597 /* Free all the Tx ring sk_buffs */
1599 for (i
= 0; i
< tx_ring
->count
; i
++) {
1600 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
1601 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
1604 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
1605 memset(tx_ring
->tx_buffer_info
, 0, size
);
1607 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1609 tx_ring
->next_to_use
= 0;
1610 tx_ring
->next_to_clean
= 0;
1613 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1615 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1619 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1620 * @adapter: board private structure
1622 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter
*adapter
)
1626 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1627 ixgbevf_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1631 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1632 * @adapter: board private structure
1634 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter
*adapter
)
1638 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1639 ixgbevf_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1642 void ixgbevf_down(struct ixgbevf_adapter
*adapter
)
1644 struct net_device
*netdev
= adapter
->netdev
;
1645 struct ixgbe_hw
*hw
= &adapter
->hw
;
1649 /* signal that we are down to the interrupt handler */
1650 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1651 /* disable receives */
1653 netif_tx_disable(netdev
);
1657 netif_tx_stop_all_queues(netdev
);
1659 ixgbevf_irq_disable(adapter
);
1661 ixgbevf_napi_disable_all(adapter
);
1663 del_timer_sync(&adapter
->watchdog_timer
);
1664 /* can't call flush scheduled work here because it can deadlock
1665 * if linkwatch_event tries to acquire the rtnl_lock which we are
1667 while (adapter
->flags
& IXGBE_FLAG_IN_WATCHDOG_TASK
)
1670 /* disable transmits in the hardware now that interrupts are off */
1671 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1672 j
= adapter
->tx_ring
[i
].reg_idx
;
1673 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1674 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
),
1675 (txdctl
& ~IXGBE_TXDCTL_ENABLE
));
1678 netif_carrier_off(netdev
);
1680 if (!pci_channel_offline(adapter
->pdev
))
1681 ixgbevf_reset(adapter
);
1683 ixgbevf_clean_all_tx_rings(adapter
);
1684 ixgbevf_clean_all_rx_rings(adapter
);
1687 void ixgbevf_reinit_locked(struct ixgbevf_adapter
*adapter
)
1689 WARN_ON(in_interrupt());
1691 while (test_and_set_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
1695 * Check if PF is up before re-init. If not then skip until
1696 * later when the PF is up and ready to service requests from
1697 * the VF via mailbox. If the VF is up and running then the
1698 * watchdog task will continue to schedule reset tasks until
1699 * the PF is up and running.
1701 ixgbevf_down(adapter
);
1702 ixgbevf_up(adapter
);
1704 clear_bit(__IXGBEVF_RESETTING
, &adapter
->state
);
1707 void ixgbevf_reset(struct ixgbevf_adapter
*adapter
)
1709 struct ixgbe_hw
*hw
= &adapter
->hw
;
1710 struct net_device
*netdev
= adapter
->netdev
;
1712 spin_lock_bh(&adapter
->mbx_lock
);
1714 if (hw
->mac
.ops
.reset_hw(hw
))
1715 hw_dbg(hw
, "PF still resetting\n");
1717 hw
->mac
.ops
.init_hw(hw
);
1719 spin_unlock_bh(&adapter
->mbx_lock
);
1721 if (is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
1722 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
1724 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
,
1729 static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter
*adapter
,
1733 int vector_threshold
;
1735 /* We'll want at least 2 (vector_threshold):
1736 * 1) TxQ[0] + RxQ[0] handler
1737 * 2) Other (Link Status Change, etc.)
1739 vector_threshold
= MIN_MSIX_COUNT
;
1741 /* The more we get, the more we will assign to Tx/Rx Cleanup
1742 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1743 * Right now, we simply care about how many we'll get; we'll
1744 * set them up later while requesting irq's.
1746 while (vectors
>= vector_threshold
) {
1747 err
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
1749 if (!err
|| err
< 0) /* Success or a nasty failure. */
1751 else /* err == number of vectors we should try again with */
1755 if (vectors
< vector_threshold
)
1759 dev_err(&adapter
->pdev
->dev
,
1760 "Unable to allocate MSI-X interrupts\n");
1761 kfree(adapter
->msix_entries
);
1762 adapter
->msix_entries
= NULL
;
1765 * Adjust for only the vectors we'll use, which is minimum
1766 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1767 * vectors we were allocated.
1769 adapter
->num_msix_vectors
= vectors
;
1775 * ixgbevf_set_num_queues - Allocate queues for device, feature dependent
1776 * @adapter: board private structure to initialize
1778 * This is the top level queue allocation routine. The order here is very
1779 * important, starting with the "most" number of features turned on at once,
1780 * and ending with the smallest set of features. This way large combinations
1781 * can be allocated if they're turned on, and smaller combinations are the
1782 * fallthrough conditions.
1785 static void ixgbevf_set_num_queues(struct ixgbevf_adapter
*adapter
)
1787 /* Start with base case */
1788 adapter
->num_rx_queues
= 1;
1789 adapter
->num_tx_queues
= 1;
1793 * ixgbevf_alloc_queues - Allocate memory for all rings
1794 * @adapter: board private structure to initialize
1796 * We allocate one ring per queue at run-time since we don't know the
1797 * number of queues at compile-time. The polling_netdev array is
1798 * intended for Multiqueue, but should work fine with a single queue.
1800 static int ixgbevf_alloc_queues(struct ixgbevf_adapter
*adapter
)
1804 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1805 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1806 if (!adapter
->tx_ring
)
1807 goto err_tx_ring_allocation
;
1809 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1810 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1811 if (!adapter
->rx_ring
)
1812 goto err_rx_ring_allocation
;
1814 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1815 adapter
->tx_ring
[i
].count
= adapter
->tx_ring_count
;
1816 adapter
->tx_ring
[i
].queue_index
= i
;
1817 /* reg_idx may be remapped later by DCB config */
1818 adapter
->tx_ring
[i
].reg_idx
= i
;
1819 adapter
->tx_ring
[i
].dev
= &adapter
->pdev
->dev
;
1820 adapter
->tx_ring
[i
].netdev
= adapter
->netdev
;
1823 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1824 adapter
->rx_ring
[i
].count
= adapter
->rx_ring_count
;
1825 adapter
->rx_ring
[i
].queue_index
= i
;
1826 adapter
->rx_ring
[i
].reg_idx
= i
;
1827 adapter
->rx_ring
[i
].dev
= &adapter
->pdev
->dev
;
1828 adapter
->rx_ring
[i
].netdev
= adapter
->netdev
;
1833 err_rx_ring_allocation
:
1834 kfree(adapter
->tx_ring
);
1835 err_tx_ring_allocation
:
1840 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
1841 * @adapter: board private structure to initialize
1843 * Attempt to configure the interrupts using the best available
1844 * capabilities of the hardware and the kernel.
1846 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter
*adapter
)
1848 struct net_device
*netdev
= adapter
->netdev
;
1850 int vector
, v_budget
;
1853 * It's easy to be greedy for MSI-X vectors, but it really
1854 * doesn't do us much good if we have a lot more vectors
1855 * than CPU's. So let's be conservative and only ask for
1856 * (roughly) the same number of vectors as there are CPU's.
1857 * The default is to use pairs of vectors.
1859 v_budget
= max(adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1860 v_budget
= min_t(int, v_budget
, num_online_cpus());
1861 v_budget
+= NON_Q_VECTORS
;
1863 /* A failure in MSI-X entry allocation isn't fatal, but it does
1864 * mean we disable MSI-X capabilities of the adapter. */
1865 adapter
->msix_entries
= kcalloc(v_budget
,
1866 sizeof(struct msix_entry
), GFP_KERNEL
);
1867 if (!adapter
->msix_entries
) {
1872 for (vector
= 0; vector
< v_budget
; vector
++)
1873 adapter
->msix_entries
[vector
].entry
= vector
;
1875 err
= ixgbevf_acquire_msix_vectors(adapter
, v_budget
);
1879 err
= netif_set_real_num_tx_queues(netdev
, adapter
->num_tx_queues
);
1883 err
= netif_set_real_num_rx_queues(netdev
, adapter
->num_rx_queues
);
1890 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
1891 * @adapter: board private structure to initialize
1893 * We allocate one q_vector per queue interrupt. If allocation fails we
1896 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter
*adapter
)
1898 int q_idx
, num_q_vectors
;
1899 struct ixgbevf_q_vector
*q_vector
;
1901 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1903 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1904 q_vector
= kzalloc(sizeof(struct ixgbevf_q_vector
), GFP_KERNEL
);
1907 q_vector
->adapter
= adapter
;
1908 q_vector
->v_idx
= q_idx
;
1909 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
1911 adapter
->q_vector
[q_idx
] = q_vector
;
1919 q_vector
= adapter
->q_vector
[q_idx
];
1920 netif_napi_del(&q_vector
->napi
);
1922 adapter
->q_vector
[q_idx
] = NULL
;
1928 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
1929 * @adapter: board private structure to initialize
1931 * This function frees the memory allocated to the q_vectors. In addition if
1932 * NAPI is enabled it will delete any references to the NAPI struct prior
1933 * to freeing the q_vector.
1935 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter
*adapter
)
1937 int q_idx
, num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1939 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1940 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
1942 adapter
->q_vector
[q_idx
] = NULL
;
1943 netif_napi_del(&q_vector
->napi
);
1949 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
1950 * @adapter: board private structure
1953 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter
*adapter
)
1955 pci_disable_msix(adapter
->pdev
);
1956 kfree(adapter
->msix_entries
);
1957 adapter
->msix_entries
= NULL
;
1961 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
1962 * @adapter: board private structure to initialize
1965 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
1969 /* Number of supported queues */
1970 ixgbevf_set_num_queues(adapter
);
1972 err
= ixgbevf_set_interrupt_capability(adapter
);
1974 hw_dbg(&adapter
->hw
,
1975 "Unable to setup interrupt capabilities\n");
1976 goto err_set_interrupt
;
1979 err
= ixgbevf_alloc_q_vectors(adapter
);
1981 hw_dbg(&adapter
->hw
, "Unable to allocate memory for queue "
1983 goto err_alloc_q_vectors
;
1986 err
= ixgbevf_alloc_queues(adapter
);
1988 pr_err("Unable to allocate memory for queues\n");
1989 goto err_alloc_queues
;
1992 hw_dbg(&adapter
->hw
, "Multiqueue %s: Rx Queue count = %u, "
1993 "Tx Queue count = %u\n",
1994 (adapter
->num_rx_queues
> 1) ? "Enabled" :
1995 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1997 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2001 ixgbevf_free_q_vectors(adapter
);
2002 err_alloc_q_vectors
:
2003 ixgbevf_reset_interrupt_capability(adapter
);
2009 * ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings
2010 * @adapter: board private structure to clear interrupt scheme on
2012 * We go through and clear interrupt specific resources and reset the structure
2013 * to pre-load conditions
2015 static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2017 adapter
->num_tx_queues
= 0;
2018 adapter
->num_rx_queues
= 0;
2020 ixgbevf_free_q_vectors(adapter
);
2021 ixgbevf_reset_interrupt_capability(adapter
);
2025 * ixgbevf_sw_init - Initialize general software structures
2026 * (struct ixgbevf_adapter)
2027 * @adapter: board private structure to initialize
2029 * ixgbevf_sw_init initializes the Adapter private data structure.
2030 * Fields are initialized based on PCI device information and
2031 * OS network device settings (MTU size).
2033 static int __devinit
ixgbevf_sw_init(struct ixgbevf_adapter
*adapter
)
2035 struct ixgbe_hw
*hw
= &adapter
->hw
;
2036 struct pci_dev
*pdev
= adapter
->pdev
;
2039 /* PCI config space info */
2041 hw
->vendor_id
= pdev
->vendor
;
2042 hw
->device_id
= pdev
->device
;
2043 hw
->revision_id
= pdev
->revision
;
2044 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2045 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2047 hw
->mbx
.ops
.init_params(hw
);
2049 /* assume legacy case in which PF would only give VF 2 queues */
2050 hw
->mac
.max_tx_queues
= 2;
2051 hw
->mac
.max_rx_queues
= 2;
2053 err
= hw
->mac
.ops
.reset_hw(hw
);
2055 dev_info(&pdev
->dev
,
2056 "PF still in reset state, assigning new address\n");
2057 eth_hw_addr_random(adapter
->netdev
);
2058 memcpy(adapter
->hw
.mac
.addr
, adapter
->netdev
->dev_addr
,
2059 adapter
->netdev
->addr_len
);
2061 err
= hw
->mac
.ops
.init_hw(hw
);
2063 pr_err("init_shared_code failed: %d\n", err
);
2066 memcpy(adapter
->netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
2067 adapter
->netdev
->addr_len
);
2070 /* lock to protect mailbox accesses */
2071 spin_lock_init(&adapter
->mbx_lock
);
2073 /* Enable dynamic interrupt throttling rates */
2074 adapter
->rx_itr_setting
= 1;
2075 adapter
->tx_itr_setting
= 1;
2077 /* set default ring sizes */
2078 adapter
->tx_ring_count
= IXGBEVF_DEFAULT_TXD
;
2079 adapter
->rx_ring_count
= IXGBEVF_DEFAULT_RXD
;
2081 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2088 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2090 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2091 if (current_counter < last_counter) \
2092 counter += 0x100000000LL; \
2093 last_counter = current_counter; \
2094 counter &= 0xFFFFFFFF00000000LL; \
2095 counter |= current_counter; \
2098 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2100 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2101 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2102 u64 current_counter = (current_counter_msb << 32) | \
2103 current_counter_lsb; \
2104 if (current_counter < last_counter) \
2105 counter += 0x1000000000LL; \
2106 last_counter = current_counter; \
2107 counter &= 0xFFFFFFF000000000LL; \
2108 counter |= current_counter; \
2111 * ixgbevf_update_stats - Update the board statistics counters.
2112 * @adapter: board private structure
2114 void ixgbevf_update_stats(struct ixgbevf_adapter
*adapter
)
2116 struct ixgbe_hw
*hw
= &adapter
->hw
;
2118 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC
, adapter
->stats
.last_vfgprc
,
2119 adapter
->stats
.vfgprc
);
2120 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC
, adapter
->stats
.last_vfgptc
,
2121 adapter
->stats
.vfgptc
);
2122 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB
, IXGBE_VFGORC_MSB
,
2123 adapter
->stats
.last_vfgorc
,
2124 adapter
->stats
.vfgorc
);
2125 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB
, IXGBE_VFGOTC_MSB
,
2126 adapter
->stats
.last_vfgotc
,
2127 adapter
->stats
.vfgotc
);
2128 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC
, adapter
->stats
.last_vfmprc
,
2129 adapter
->stats
.vfmprc
);
2133 * ixgbevf_watchdog - Timer Call-back
2134 * @data: pointer to adapter cast into an unsigned long
2136 static void ixgbevf_watchdog(unsigned long data
)
2138 struct ixgbevf_adapter
*adapter
= (struct ixgbevf_adapter
*)data
;
2139 struct ixgbe_hw
*hw
= &adapter
->hw
;
2144 * Do the watchdog outside of interrupt context due to the lovely
2145 * delays that some of the newer hardware requires
2148 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2149 goto watchdog_short_circuit
;
2151 /* get one bit for every active tx/rx interrupt vector */
2152 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
2153 struct ixgbevf_q_vector
*qv
= adapter
->q_vector
[i
];
2154 if (qv
->rx
.ring
|| qv
->tx
.ring
)
2158 IXGBE_WRITE_REG(hw
, IXGBE_VTEICS
, eics
);
2160 watchdog_short_circuit
:
2161 schedule_work(&adapter
->watchdog_task
);
2165 * ixgbevf_tx_timeout - Respond to a Tx Hang
2166 * @netdev: network interface device structure
2168 static void ixgbevf_tx_timeout(struct net_device
*netdev
)
2170 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2172 /* Do the reset outside of interrupt context */
2173 schedule_work(&adapter
->reset_task
);
2176 static void ixgbevf_reset_task(struct work_struct
*work
)
2178 struct ixgbevf_adapter
*adapter
;
2179 adapter
= container_of(work
, struct ixgbevf_adapter
, reset_task
);
2181 /* If we're already down or resetting, just bail */
2182 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2183 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2186 adapter
->tx_timeout_count
++;
2188 ixgbevf_reinit_locked(adapter
);
2192 * ixgbevf_watchdog_task - worker thread to bring link up
2193 * @work: pointer to work_struct containing our data
2195 static void ixgbevf_watchdog_task(struct work_struct
*work
)
2197 struct ixgbevf_adapter
*adapter
= container_of(work
,
2198 struct ixgbevf_adapter
,
2200 struct net_device
*netdev
= adapter
->netdev
;
2201 struct ixgbe_hw
*hw
= &adapter
->hw
;
2202 u32 link_speed
= adapter
->link_speed
;
2203 bool link_up
= adapter
->link_up
;
2205 adapter
->flags
|= IXGBE_FLAG_IN_WATCHDOG_TASK
;
2208 * Always check the link on the watchdog because we have
2211 if (hw
->mac
.ops
.check_link
) {
2214 spin_lock_bh(&adapter
->mbx_lock
);
2216 need_reset
= hw
->mac
.ops
.check_link(hw
, &link_speed
,
2219 spin_unlock_bh(&adapter
->mbx_lock
);
2222 adapter
->link_up
= link_up
;
2223 adapter
->link_speed
= link_speed
;
2224 netif_carrier_off(netdev
);
2225 netif_tx_stop_all_queues(netdev
);
2226 schedule_work(&adapter
->reset_task
);
2230 /* always assume link is up, if no check link
2232 link_speed
= IXGBE_LINK_SPEED_10GB_FULL
;
2235 adapter
->link_up
= link_up
;
2236 adapter
->link_speed
= link_speed
;
2239 if (!netif_carrier_ok(netdev
)) {
2240 hw_dbg(&adapter
->hw
, "NIC Link is Up, %u Gbps\n",
2241 (link_speed
== IXGBE_LINK_SPEED_10GB_FULL
) ?
2243 netif_carrier_on(netdev
);
2244 netif_tx_wake_all_queues(netdev
);
2247 adapter
->link_up
= false;
2248 adapter
->link_speed
= 0;
2249 if (netif_carrier_ok(netdev
)) {
2250 hw_dbg(&adapter
->hw
, "NIC Link is Down\n");
2251 netif_carrier_off(netdev
);
2252 netif_tx_stop_all_queues(netdev
);
2256 ixgbevf_update_stats(adapter
);
2259 /* Reset the timer */
2260 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2261 mod_timer(&adapter
->watchdog_timer
,
2262 round_jiffies(jiffies
+ (2 * HZ
)));
2264 adapter
->flags
&= ~IXGBE_FLAG_IN_WATCHDOG_TASK
;
2268 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2269 * @adapter: board private structure
2270 * @tx_ring: Tx descriptor ring for a specific queue
2272 * Free all transmit software resources
2274 void ixgbevf_free_tx_resources(struct ixgbevf_adapter
*adapter
,
2275 struct ixgbevf_ring
*tx_ring
)
2277 struct pci_dev
*pdev
= adapter
->pdev
;
2279 ixgbevf_clean_tx_ring(adapter
, tx_ring
);
2281 vfree(tx_ring
->tx_buffer_info
);
2282 tx_ring
->tx_buffer_info
= NULL
;
2284 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2287 tx_ring
->desc
= NULL
;
2291 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2292 * @adapter: board private structure
2294 * Free all transmit software resources
2296 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2300 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2301 if (adapter
->tx_ring
[i
].desc
)
2302 ixgbevf_free_tx_resources(adapter
,
2303 &adapter
->tx_ring
[i
]);
2308 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2309 * @adapter: board private structure
2310 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2312 * Return 0 on success, negative on failure
2314 int ixgbevf_setup_tx_resources(struct ixgbevf_adapter
*adapter
,
2315 struct ixgbevf_ring
*tx_ring
)
2317 struct pci_dev
*pdev
= adapter
->pdev
;
2320 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
2321 tx_ring
->tx_buffer_info
= vzalloc(size
);
2322 if (!tx_ring
->tx_buffer_info
)
2325 /* round up to nearest 4K */
2326 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
2327 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2329 tx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, tx_ring
->size
,
2330 &tx_ring
->dma
, GFP_KERNEL
);
2334 tx_ring
->next_to_use
= 0;
2335 tx_ring
->next_to_clean
= 0;
2339 vfree(tx_ring
->tx_buffer_info
);
2340 tx_ring
->tx_buffer_info
= NULL
;
2341 hw_dbg(&adapter
->hw
, "Unable to allocate memory for the transmit "
2342 "descriptor ring\n");
2347 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2348 * @adapter: board private structure
2350 * If this function returns with an error, then it's possible one or
2351 * more of the rings is populated (while the rest are not). It is the
2352 * callers duty to clean those orphaned rings.
2354 * Return 0 on success, negative on failure
2356 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2360 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2361 err
= ixgbevf_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2364 hw_dbg(&adapter
->hw
,
2365 "Allocation for Tx Queue %u failed\n", i
);
2373 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2374 * @adapter: board private structure
2375 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2377 * Returns 0 on success, negative on failure
2379 int ixgbevf_setup_rx_resources(struct ixgbevf_adapter
*adapter
,
2380 struct ixgbevf_ring
*rx_ring
)
2382 struct pci_dev
*pdev
= adapter
->pdev
;
2385 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
2386 rx_ring
->rx_buffer_info
= vzalloc(size
);
2387 if (!rx_ring
->rx_buffer_info
)
2390 /* Round up to nearest 4K */
2391 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
2392 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2394 rx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, rx_ring
->size
,
2395 &rx_ring
->dma
, GFP_KERNEL
);
2397 if (!rx_ring
->desc
) {
2398 hw_dbg(&adapter
->hw
,
2399 "Unable to allocate memory for "
2400 "the receive descriptor ring\n");
2401 vfree(rx_ring
->rx_buffer_info
);
2402 rx_ring
->rx_buffer_info
= NULL
;
2406 rx_ring
->next_to_clean
= 0;
2407 rx_ring
->next_to_use
= 0;
2415 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2416 * @adapter: board private structure
2418 * If this function returns with an error, then it's possible one or
2419 * more of the rings is populated (while the rest are not). It is the
2420 * callers duty to clean those orphaned rings.
2422 * Return 0 on success, negative on failure
2424 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2428 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2429 err
= ixgbevf_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2432 hw_dbg(&adapter
->hw
,
2433 "Allocation for Rx Queue %u failed\n", i
);
2440 * ixgbevf_free_rx_resources - Free Rx Resources
2441 * @adapter: board private structure
2442 * @rx_ring: ring to clean the resources from
2444 * Free all receive software resources
2446 void ixgbevf_free_rx_resources(struct ixgbevf_adapter
*adapter
,
2447 struct ixgbevf_ring
*rx_ring
)
2449 struct pci_dev
*pdev
= adapter
->pdev
;
2451 ixgbevf_clean_rx_ring(adapter
, rx_ring
);
2453 vfree(rx_ring
->rx_buffer_info
);
2454 rx_ring
->rx_buffer_info
= NULL
;
2456 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2459 rx_ring
->desc
= NULL
;
2463 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2464 * @adapter: board private structure
2466 * Free all receive software resources
2468 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2472 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2473 if (adapter
->rx_ring
[i
].desc
)
2474 ixgbevf_free_rx_resources(adapter
,
2475 &adapter
->rx_ring
[i
]);
2478 static int ixgbevf_setup_queues(struct ixgbevf_adapter
*adapter
)
2480 struct ixgbe_hw
*hw
= &adapter
->hw
;
2481 struct ixgbevf_ring
*rx_ring
;
2482 unsigned int def_q
= 0;
2483 unsigned int num_tcs
= 0;
2484 unsigned int num_rx_queues
= 1;
2487 spin_lock_bh(&adapter
->mbx_lock
);
2489 /* fetch queue configuration from the PF */
2490 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
2492 spin_unlock_bh(&adapter
->mbx_lock
);
2498 /* update default Tx ring register index */
2499 adapter
->tx_ring
[0].reg_idx
= def_q
;
2501 /* we need as many queues as traffic classes */
2502 num_rx_queues
= num_tcs
;
2505 /* nothing to do if we have the correct number of queues */
2506 if (adapter
->num_rx_queues
== num_rx_queues
)
2509 /* allocate new rings */
2510 rx_ring
= kcalloc(num_rx_queues
,
2511 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
2515 /* setup ring fields */
2516 for (i
= 0; i
< num_rx_queues
; i
++) {
2517 rx_ring
[i
].count
= adapter
->rx_ring_count
;
2518 rx_ring
[i
].queue_index
= i
;
2519 rx_ring
[i
].reg_idx
= i
;
2520 rx_ring
[i
].dev
= &adapter
->pdev
->dev
;
2521 rx_ring
[i
].netdev
= adapter
->netdev
;
2524 /* free the existing ring and queues */
2525 adapter
->num_rx_queues
= 0;
2526 kfree(adapter
->rx_ring
);
2528 /* move new rings into position on the adapter struct */
2529 adapter
->rx_ring
= rx_ring
;
2530 adapter
->num_rx_queues
= num_rx_queues
;
2536 * ixgbevf_open - Called when a network interface is made active
2537 * @netdev: network interface device structure
2539 * Returns 0 on success, negative value on failure
2541 * The open entry point is called when a network interface is made
2542 * active by the system (IFF_UP). At this point all resources needed
2543 * for transmit and receive operations are allocated, the interrupt
2544 * handler is registered with the OS, the watchdog timer is started,
2545 * and the stack is notified that the interface is ready.
2547 static int ixgbevf_open(struct net_device
*netdev
)
2549 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2550 struct ixgbe_hw
*hw
= &adapter
->hw
;
2553 /* disallow open during test */
2554 if (test_bit(__IXGBEVF_TESTING
, &adapter
->state
))
2557 if (hw
->adapter_stopped
) {
2558 ixgbevf_reset(adapter
);
2559 /* if adapter is still stopped then PF isn't up and
2560 * the vf can't start. */
2561 if (hw
->adapter_stopped
) {
2562 err
= IXGBE_ERR_MBX
;
2563 pr_err("Unable to start - perhaps the PF Driver isn't "
2565 goto err_setup_reset
;
2569 ixgbevf_negotiate_api(adapter
);
2571 /* setup queue reg_idx and Rx queue count */
2572 err
= ixgbevf_setup_queues(adapter
);
2574 goto err_setup_queues
;
2576 /* allocate transmit descriptors */
2577 err
= ixgbevf_setup_all_tx_resources(adapter
);
2581 /* allocate receive descriptors */
2582 err
= ixgbevf_setup_all_rx_resources(adapter
);
2586 ixgbevf_configure(adapter
);
2589 * Map the Tx/Rx rings to the vectors we were allotted.
2590 * if request_irq will be called in this function map_rings
2591 * must be called *before* up_complete
2593 ixgbevf_map_rings_to_vectors(adapter
);
2595 ixgbevf_up_complete(adapter
);
2597 /* clear any pending interrupts, may auto mask */
2598 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
2599 err
= ixgbevf_request_irq(adapter
);
2603 ixgbevf_irq_enable(adapter
);
2608 ixgbevf_down(adapter
);
2609 ixgbevf_free_irq(adapter
);
2611 ixgbevf_free_all_rx_resources(adapter
);
2613 ixgbevf_free_all_tx_resources(adapter
);
2615 ixgbevf_reset(adapter
);
2623 * ixgbevf_close - Disables a network interface
2624 * @netdev: network interface device structure
2626 * Returns 0, this is not allowed to fail
2628 * The close entry point is called when an interface is de-activated
2629 * by the OS. The hardware is still under the drivers control, but
2630 * needs to be disabled. A global MAC reset is issued to stop the
2631 * hardware, and all transmit and receive resources are freed.
2633 static int ixgbevf_close(struct net_device
*netdev
)
2635 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2637 ixgbevf_down(adapter
);
2638 ixgbevf_free_irq(adapter
);
2640 ixgbevf_free_all_tx_resources(adapter
);
2641 ixgbevf_free_all_rx_resources(adapter
);
2646 static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring
*tx_ring
,
2647 u32 vlan_macip_lens
, u32 type_tucmd
,
2650 struct ixgbe_adv_tx_context_desc
*context_desc
;
2651 u16 i
= tx_ring
->next_to_use
;
2653 context_desc
= IXGBEVF_TX_CTXTDESC(tx_ring
, i
);
2656 tx_ring
->next_to_use
= (i
< tx_ring
->count
) ? i
: 0;
2658 /* set bits to identify this as an advanced context descriptor */
2659 type_tucmd
|= IXGBE_TXD_CMD_DEXT
| IXGBE_ADVTXD_DTYP_CTXT
;
2661 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
2662 context_desc
->seqnum_seed
= 0;
2663 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd
);
2664 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2667 static int ixgbevf_tso(struct ixgbevf_ring
*tx_ring
,
2668 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2670 u32 vlan_macip_lens
, type_tucmd
;
2671 u32 mss_l4len_idx
, l4len
;
2673 if (!skb_is_gso(skb
))
2676 if (skb_header_cloned(skb
)) {
2677 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2682 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2683 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2685 if (skb
->protocol
== htons(ETH_P_IP
)) {
2686 struct iphdr
*iph
= ip_hdr(skb
);
2689 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2693 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2694 } else if (skb_is_gso_v6(skb
)) {
2695 ipv6_hdr(skb
)->payload_len
= 0;
2696 tcp_hdr(skb
)->check
=
2697 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2698 &ipv6_hdr(skb
)->daddr
,
2702 /* compute header lengths */
2703 l4len
= tcp_hdrlen(skb
);
2705 *hdr_len
= skb_transport_offset(skb
) + l4len
;
2707 /* mss_l4len_id: use 1 as index for TSO */
2708 mss_l4len_idx
= l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
;
2709 mss_l4len_idx
|= skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
;
2710 mss_l4len_idx
|= 1 << IXGBE_ADVTXD_IDX_SHIFT
;
2712 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
2713 vlan_macip_lens
= skb_network_header_len(skb
);
2714 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2715 vlan_macip_lens
|= tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2717 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2718 type_tucmd
, mss_l4len_idx
);
2723 static bool ixgbevf_tx_csum(struct ixgbevf_ring
*tx_ring
,
2724 struct sk_buff
*skb
, u32 tx_flags
)
2729 u32 vlan_macip_lens
= 0;
2730 u32 mss_l4len_idx
= 0;
2733 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2735 switch (skb
->protocol
) {
2736 case __constant_htons(ETH_P_IP
):
2737 vlan_macip_lens
|= skb_network_header_len(skb
);
2738 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2739 l4_hdr
= ip_hdr(skb
)->protocol
;
2741 case __constant_htons(ETH_P_IPV6
):
2742 vlan_macip_lens
|= skb_network_header_len(skb
);
2743 l4_hdr
= ipv6_hdr(skb
)->nexthdr
;
2746 if (unlikely(net_ratelimit())) {
2747 dev_warn(tx_ring
->dev
,
2748 "partial checksum but proto=%x!\n",
2756 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2757 mss_l4len_idx
= tcp_hdrlen(skb
) <<
2758 IXGBE_ADVTXD_L4LEN_SHIFT
;
2761 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
2762 mss_l4len_idx
= sizeof(struct sctphdr
) <<
2763 IXGBE_ADVTXD_L4LEN_SHIFT
;
2766 mss_l4len_idx
= sizeof(struct udphdr
) <<
2767 IXGBE_ADVTXD_L4LEN_SHIFT
;
2770 if (unlikely(net_ratelimit())) {
2771 dev_warn(tx_ring
->dev
,
2772 "partial checksum but l4 proto=%x!\n",
2779 /* vlan_macip_lens: MACLEN, VLAN tag */
2780 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2781 vlan_macip_lens
|= tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2783 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2784 type_tucmd
, mss_l4len_idx
);
2786 return (skb
->ip_summed
== CHECKSUM_PARTIAL
);
2789 static int ixgbevf_tx_map(struct ixgbevf_ring
*tx_ring
,
2790 struct sk_buff
*skb
, u32 tx_flags
,
2793 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2795 unsigned int total
= skb
->len
;
2796 unsigned int offset
= 0, size
;
2798 unsigned int nr_frags
= skb_shinfo(skb
)->nr_frags
;
2802 i
= tx_ring
->next_to_use
;
2804 len
= min(skb_headlen(skb
), total
);
2806 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2807 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2809 tx_buffer_info
->length
= size
;
2810 tx_buffer_info
->mapped_as_page
= false;
2811 tx_buffer_info
->dma
= dma_map_single(tx_ring
->dev
,
2813 size
, DMA_TO_DEVICE
);
2814 if (dma_mapping_error(tx_ring
->dev
, tx_buffer_info
->dma
))
2816 tx_buffer_info
->next_to_watch
= i
;
2823 if (i
== tx_ring
->count
)
2827 for (f
= 0; f
< nr_frags
; f
++) {
2828 const struct skb_frag_struct
*frag
;
2830 frag
= &skb_shinfo(skb
)->frags
[f
];
2831 len
= min((unsigned int)skb_frag_size(frag
), total
);
2835 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2836 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2838 tx_buffer_info
->length
= size
;
2839 tx_buffer_info
->dma
=
2840 skb_frag_dma_map(tx_ring
->dev
, frag
,
2841 offset
, size
, DMA_TO_DEVICE
);
2842 if (dma_mapping_error(tx_ring
->dev
,
2843 tx_buffer_info
->dma
))
2845 tx_buffer_info
->mapped_as_page
= true;
2846 tx_buffer_info
->next_to_watch
= i
;
2853 if (i
== tx_ring
->count
)
2861 i
= tx_ring
->count
- 1;
2864 tx_ring
->tx_buffer_info
[i
].skb
= skb
;
2865 tx_ring
->tx_buffer_info
[first
].next_to_watch
= i
;
2866 tx_ring
->tx_buffer_info
[first
].time_stamp
= jiffies
;
2871 dev_err(tx_ring
->dev
, "TX DMA map failed\n");
2873 /* clear timestamp and dma mappings for failed tx_buffer_info map */
2874 tx_buffer_info
->dma
= 0;
2875 tx_buffer_info
->next_to_watch
= 0;
2878 /* clear timestamp and dma mappings for remaining portion of packet */
2879 while (count
>= 0) {
2883 i
+= tx_ring
->count
;
2884 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2885 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
2891 static void ixgbevf_tx_queue(struct ixgbevf_ring
*tx_ring
, int tx_flags
,
2892 int count
, u32 paylen
, u8 hdr_len
)
2894 union ixgbe_adv_tx_desc
*tx_desc
= NULL
;
2895 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2896 u32 olinfo_status
= 0, cmd_type_len
= 0;
2899 u32 txd_cmd
= IXGBE_TXD_CMD_EOP
| IXGBE_TXD_CMD_RS
| IXGBE_TXD_CMD_IFCS
;
2901 cmd_type_len
|= IXGBE_ADVTXD_DTYP_DATA
;
2903 cmd_type_len
|= IXGBE_ADVTXD_DCMD_IFCS
| IXGBE_ADVTXD_DCMD_DEXT
;
2905 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
2906 cmd_type_len
|= IXGBE_ADVTXD_DCMD_VLE
;
2908 if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
2909 olinfo_status
|= IXGBE_ADVTXD_POPTS_TXSM
;
2911 if (tx_flags
& IXGBE_TX_FLAGS_TSO
) {
2912 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
2914 /* use index 1 context for tso */
2915 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
2916 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
2917 olinfo_status
|= IXGBE_ADVTXD_POPTS_IXSM
;
2922 * Check Context must be set if Tx switch is enabled, which it
2923 * always is for case where virtual functions are running
2925 olinfo_status
|= IXGBE_ADVTXD_CC
;
2927 olinfo_status
|= ((paylen
- hdr_len
) << IXGBE_ADVTXD_PAYLEN_SHIFT
);
2929 i
= tx_ring
->next_to_use
;
2931 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2932 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
2933 tx_desc
->read
.buffer_addr
= cpu_to_le64(tx_buffer_info
->dma
);
2934 tx_desc
->read
.cmd_type_len
=
2935 cpu_to_le32(cmd_type_len
| tx_buffer_info
->length
);
2936 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
2938 if (i
== tx_ring
->count
)
2942 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(txd_cmd
);
2944 tx_ring
->next_to_use
= i
;
2947 static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
2949 struct ixgbevf_adapter
*adapter
= netdev_priv(tx_ring
->netdev
);
2951 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
2952 /* Herbert's original patch had:
2953 * smp_mb__after_netif_stop_queue();
2954 * but since that doesn't exist yet, just open code it. */
2957 /* We need to check again in a case another CPU has just
2958 * made room available. */
2959 if (likely(IXGBE_DESC_UNUSED(tx_ring
) < size
))
2962 /* A reprieve! - use start_queue because it doesn't call schedule */
2963 netif_start_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
2964 ++adapter
->restart_queue
;
2968 static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
2970 if (likely(IXGBE_DESC_UNUSED(tx_ring
) >= size
))
2972 return __ixgbevf_maybe_stop_tx(tx_ring
, size
);
2975 static int ixgbevf_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2977 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2978 struct ixgbevf_ring
*tx_ring
;
2980 unsigned int tx_flags
= 0;
2983 u16 count
= TXD_USE_COUNT(skb_headlen(skb
));
2984 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
2987 u8
*dst_mac
= skb_header_pointer(skb
, 0, 0, NULL
);
2988 if (!dst_mac
|| is_link_local_ether_addr(dst_mac
)) {
2990 return NETDEV_TX_OK
;
2993 tx_ring
= &adapter
->tx_ring
[r_idx
];
2996 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
2997 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
2998 * + 2 desc gap to keep tail from touching head,
2999 * + 1 desc for context descriptor,
3000 * otherwise try next time
3002 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
3003 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
3004 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
3006 count
+= skb_shinfo(skb
)->nr_frags
;
3008 if (ixgbevf_maybe_stop_tx(tx_ring
, count
+ 3)) {
3010 return NETDEV_TX_BUSY
;
3013 if (vlan_tx_tag_present(skb
)) {
3014 tx_flags
|= vlan_tx_tag_get(skb
);
3015 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
3016 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
3019 first
= tx_ring
->next_to_use
;
3021 if (skb
->protocol
== htons(ETH_P_IP
))
3022 tx_flags
|= IXGBE_TX_FLAGS_IPV4
;
3023 tso
= ixgbevf_tso(tx_ring
, skb
, tx_flags
, &hdr_len
);
3025 dev_kfree_skb_any(skb
);
3026 return NETDEV_TX_OK
;
3030 tx_flags
|= IXGBE_TX_FLAGS_TSO
| IXGBE_TX_FLAGS_CSUM
;
3031 else if (ixgbevf_tx_csum(tx_ring
, skb
, tx_flags
))
3032 tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
3034 ixgbevf_tx_queue(tx_ring
, tx_flags
,
3035 ixgbevf_tx_map(tx_ring
, skb
, tx_flags
, first
),
3038 * Force memory writes to complete before letting h/w
3039 * know there are new descriptors to fetch. (Only
3040 * applicable for weak-ordered memory model archs,
3045 writel(tx_ring
->next_to_use
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3047 ixgbevf_maybe_stop_tx(tx_ring
, DESC_NEEDED
);
3049 return NETDEV_TX_OK
;
3053 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3054 * @netdev: network interface device structure
3055 * @p: pointer to an address structure
3057 * Returns 0 on success, negative on failure
3059 static int ixgbevf_set_mac(struct net_device
*netdev
, void *p
)
3061 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3062 struct ixgbe_hw
*hw
= &adapter
->hw
;
3063 struct sockaddr
*addr
= p
;
3065 if (!is_valid_ether_addr(addr
->sa_data
))
3066 return -EADDRNOTAVAIL
;
3068 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3069 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3071 spin_lock_bh(&adapter
->mbx_lock
);
3073 if (hw
->mac
.ops
.set_rar
)
3074 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
3076 spin_unlock_bh(&adapter
->mbx_lock
);
3082 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3083 * @netdev: network interface device structure
3084 * @new_mtu: new value for maximum frame size
3086 * Returns 0 on success, negative on failure
3088 static int ixgbevf_change_mtu(struct net_device
*netdev
, int new_mtu
)
3090 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3091 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3092 int max_possible_frame
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3094 switch (adapter
->hw
.api_version
) {
3095 case ixgbe_mbox_api_11
:
3096 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3099 if (adapter
->hw
.mac
.type
== ixgbe_mac_X540_vf
)
3100 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3104 /* MTU < 68 is an error and causes problems on some kernels */
3105 if ((new_mtu
< 68) || (max_frame
> max_possible_frame
))
3108 hw_dbg(&adapter
->hw
, "changing MTU from %d to %d\n",
3109 netdev
->mtu
, new_mtu
);
3110 /* must set new MTU before calling down or up */
3111 netdev
->mtu
= new_mtu
;
3113 if (netif_running(netdev
))
3114 ixgbevf_reinit_locked(adapter
);
3119 static int ixgbevf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3121 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3122 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3127 netif_device_detach(netdev
);
3129 if (netif_running(netdev
)) {
3131 ixgbevf_down(adapter
);
3132 ixgbevf_free_irq(adapter
);
3133 ixgbevf_free_all_tx_resources(adapter
);
3134 ixgbevf_free_all_rx_resources(adapter
);
3138 ixgbevf_clear_interrupt_scheme(adapter
);
3141 retval
= pci_save_state(pdev
);
3146 pci_disable_device(pdev
);
3152 static int ixgbevf_resume(struct pci_dev
*pdev
)
3154 struct ixgbevf_adapter
*adapter
= pci_get_drvdata(pdev
);
3155 struct net_device
*netdev
= adapter
->netdev
;
3158 pci_set_power_state(pdev
, PCI_D0
);
3159 pci_restore_state(pdev
);
3161 * pci_restore_state clears dev->state_saved so call
3162 * pci_save_state to restore it.
3164 pci_save_state(pdev
);
3166 err
= pci_enable_device_mem(pdev
);
3168 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
3171 pci_set_master(pdev
);
3174 err
= ixgbevf_init_interrupt_scheme(adapter
);
3177 dev_err(&pdev
->dev
, "Cannot initialize interrupts\n");
3181 ixgbevf_reset(adapter
);
3183 if (netif_running(netdev
)) {
3184 err
= ixgbevf_open(netdev
);
3189 netif_device_attach(netdev
);
3194 #endif /* CONFIG_PM */
3195 static void ixgbevf_shutdown(struct pci_dev
*pdev
)
3197 ixgbevf_suspend(pdev
, PMSG_SUSPEND
);
3200 static struct rtnl_link_stats64
*ixgbevf_get_stats(struct net_device
*netdev
,
3201 struct rtnl_link_stats64
*stats
)
3203 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3206 const struct ixgbevf_ring
*ring
;
3209 ixgbevf_update_stats(adapter
);
3211 stats
->multicast
= adapter
->stats
.vfmprc
- adapter
->stats
.base_vfmprc
;
3213 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3214 ring
= &adapter
->rx_ring
[i
];
3216 start
= u64_stats_fetch_begin_bh(&ring
->syncp
);
3217 bytes
= ring
->total_bytes
;
3218 packets
= ring
->total_packets
;
3219 } while (u64_stats_fetch_retry_bh(&ring
->syncp
, start
));
3220 stats
->rx_bytes
+= bytes
;
3221 stats
->rx_packets
+= packets
;
3224 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3225 ring
= &adapter
->tx_ring
[i
];
3227 start
= u64_stats_fetch_begin_bh(&ring
->syncp
);
3228 bytes
= ring
->total_bytes
;
3229 packets
= ring
->total_packets
;
3230 } while (u64_stats_fetch_retry_bh(&ring
->syncp
, start
));
3231 stats
->tx_bytes
+= bytes
;
3232 stats
->tx_packets
+= packets
;
3238 static const struct net_device_ops ixgbevf_netdev_ops
= {
3239 .ndo_open
= ixgbevf_open
,
3240 .ndo_stop
= ixgbevf_close
,
3241 .ndo_start_xmit
= ixgbevf_xmit_frame
,
3242 .ndo_set_rx_mode
= ixgbevf_set_rx_mode
,
3243 .ndo_get_stats64
= ixgbevf_get_stats
,
3244 .ndo_validate_addr
= eth_validate_addr
,
3245 .ndo_set_mac_address
= ixgbevf_set_mac
,
3246 .ndo_change_mtu
= ixgbevf_change_mtu
,
3247 .ndo_tx_timeout
= ixgbevf_tx_timeout
,
3248 .ndo_vlan_rx_add_vid
= ixgbevf_vlan_rx_add_vid
,
3249 .ndo_vlan_rx_kill_vid
= ixgbevf_vlan_rx_kill_vid
,
3252 static void ixgbevf_assign_netdev_ops(struct net_device
*dev
)
3254 dev
->netdev_ops
= &ixgbevf_netdev_ops
;
3255 ixgbevf_set_ethtool_ops(dev
);
3256 dev
->watchdog_timeo
= 5 * HZ
;
3260 * ixgbevf_probe - Device Initialization Routine
3261 * @pdev: PCI device information struct
3262 * @ent: entry in ixgbevf_pci_tbl
3264 * Returns 0 on success, negative on failure
3266 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3267 * The OS initialization, configuring of the adapter private structure,
3268 * and a hardware reset occur.
3270 static int __devinit
ixgbevf_probe(struct pci_dev
*pdev
,
3271 const struct pci_device_id
*ent
)
3273 struct net_device
*netdev
;
3274 struct ixgbevf_adapter
*adapter
= NULL
;
3275 struct ixgbe_hw
*hw
= NULL
;
3276 const struct ixgbevf_info
*ii
= ixgbevf_info_tbl
[ent
->driver_data
];
3277 static int cards_found
;
3278 int err
, pci_using_dac
;
3280 err
= pci_enable_device(pdev
);
3284 if (!dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64)) &&
3285 !dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64))) {
3288 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
3290 err
= dma_set_coherent_mask(&pdev
->dev
,
3293 dev_err(&pdev
->dev
, "No usable DMA "
3294 "configuration, aborting\n");
3301 err
= pci_request_regions(pdev
, ixgbevf_driver_name
);
3303 dev_err(&pdev
->dev
, "pci_request_regions failed 0x%x\n", err
);
3307 pci_set_master(pdev
);
3309 netdev
= alloc_etherdev_mq(sizeof(struct ixgbevf_adapter
),
3313 goto err_alloc_etherdev
;
3316 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
3318 pci_set_drvdata(pdev
, netdev
);
3319 adapter
= netdev_priv(netdev
);
3321 adapter
->netdev
= netdev
;
3322 adapter
->pdev
= pdev
;
3325 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
3328 * call save state here in standalone driver because it relies on
3329 * adapter struct to exist, and needs to call netdev_priv
3331 pci_save_state(pdev
);
3333 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
3334 pci_resource_len(pdev
, 0));
3340 ixgbevf_assign_netdev_ops(netdev
);
3342 adapter
->bd_number
= cards_found
;
3345 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
3346 hw
->mac
.type
= ii
->mac
;
3348 memcpy(&hw
->mbx
.ops
, &ixgbevf_mbx_ops
,
3349 sizeof(struct ixgbe_mbx_operations
));
3351 /* setup the private structure */
3352 err
= ixgbevf_sw_init(adapter
);
3356 /* The HW MAC address was set and/or determined in sw_init */
3357 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
3359 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
3360 pr_err("invalid MAC address\n");
3365 netdev
->hw_features
= NETIF_F_SG
|
3372 netdev
->features
= netdev
->hw_features
|
3373 NETIF_F_HW_VLAN_TX
|
3374 NETIF_F_HW_VLAN_RX
|
3375 NETIF_F_HW_VLAN_FILTER
;
3377 netdev
->vlan_features
|= NETIF_F_TSO
;
3378 netdev
->vlan_features
|= NETIF_F_TSO6
;
3379 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
3380 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
3381 netdev
->vlan_features
|= NETIF_F_SG
;
3384 netdev
->features
|= NETIF_F_HIGHDMA
;
3386 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
3388 init_timer(&adapter
->watchdog_timer
);
3389 adapter
->watchdog_timer
.function
= ixgbevf_watchdog
;
3390 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
3392 INIT_WORK(&adapter
->reset_task
, ixgbevf_reset_task
);
3393 INIT_WORK(&adapter
->watchdog_task
, ixgbevf_watchdog_task
);
3395 err
= ixgbevf_init_interrupt_scheme(adapter
);
3399 /* pick up the PCI bus settings for reporting later */
3400 if (hw
->mac
.ops
.get_bus_info
)
3401 hw
->mac
.ops
.get_bus_info(hw
);
3403 strcpy(netdev
->name
, "eth%d");
3405 err
= register_netdev(netdev
);
3409 netif_carrier_off(netdev
);
3411 ixgbevf_init_last_counter_stats(adapter
);
3413 /* print the MAC address */
3414 hw_dbg(hw
, "%pM\n", netdev
->dev_addr
);
3416 hw_dbg(hw
, "MAC: %d\n", hw
->mac
.type
);
3418 hw_dbg(hw
, "Intel(R) 82599 Virtual Function\n");
3423 ixgbevf_clear_interrupt_scheme(adapter
);
3425 ixgbevf_reset_interrupt_capability(adapter
);
3426 iounmap(hw
->hw_addr
);
3428 free_netdev(netdev
);
3430 pci_release_regions(pdev
);
3433 pci_disable_device(pdev
);
3438 * ixgbevf_remove - Device Removal Routine
3439 * @pdev: PCI device information struct
3441 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3442 * that it should release a PCI device. The could be caused by a
3443 * Hot-Plug event, or because the driver is going to be removed from
3446 static void __devexit
ixgbevf_remove(struct pci_dev
*pdev
)
3448 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3449 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3451 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
3453 del_timer_sync(&adapter
->watchdog_timer
);
3455 cancel_work_sync(&adapter
->reset_task
);
3456 cancel_work_sync(&adapter
->watchdog_task
);
3458 if (netdev
->reg_state
== NETREG_REGISTERED
)
3459 unregister_netdev(netdev
);
3461 ixgbevf_clear_interrupt_scheme(adapter
);
3462 ixgbevf_reset_interrupt_capability(adapter
);
3464 iounmap(adapter
->hw
.hw_addr
);
3465 pci_release_regions(pdev
);
3467 hw_dbg(&adapter
->hw
, "Remove complete\n");
3469 kfree(adapter
->tx_ring
);
3470 kfree(adapter
->rx_ring
);
3472 free_netdev(netdev
);
3474 pci_disable_device(pdev
);
3478 * ixgbevf_io_error_detected - called when PCI error is detected
3479 * @pdev: Pointer to PCI device
3480 * @state: The current pci connection state
3482 * This function is called after a PCI bus error affecting
3483 * this device has been detected.
3485 static pci_ers_result_t
ixgbevf_io_error_detected(struct pci_dev
*pdev
,
3486 pci_channel_state_t state
)
3488 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3489 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3491 netif_device_detach(netdev
);
3493 if (state
== pci_channel_io_perm_failure
)
3494 return PCI_ERS_RESULT_DISCONNECT
;
3496 if (netif_running(netdev
))
3497 ixgbevf_down(adapter
);
3499 pci_disable_device(pdev
);
3501 /* Request a slot slot reset. */
3502 return PCI_ERS_RESULT_NEED_RESET
;
3506 * ixgbevf_io_slot_reset - called after the pci bus has been reset.
3507 * @pdev: Pointer to PCI device
3509 * Restart the card from scratch, as if from a cold-boot. Implementation
3510 * resembles the first-half of the ixgbevf_resume routine.
3512 static pci_ers_result_t
ixgbevf_io_slot_reset(struct pci_dev
*pdev
)
3514 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3515 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3517 if (pci_enable_device_mem(pdev
)) {
3519 "Cannot re-enable PCI device after reset.\n");
3520 return PCI_ERS_RESULT_DISCONNECT
;
3523 pci_set_master(pdev
);
3525 ixgbevf_reset(adapter
);
3527 return PCI_ERS_RESULT_RECOVERED
;
3531 * ixgbevf_io_resume - called when traffic can start flowing again.
3532 * @pdev: Pointer to PCI device
3534 * This callback is called when the error recovery driver tells us that
3535 * its OK to resume normal operation. Implementation resembles the
3536 * second-half of the ixgbevf_resume routine.
3538 static void ixgbevf_io_resume(struct pci_dev
*pdev
)
3540 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3541 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3543 if (netif_running(netdev
))
3544 ixgbevf_up(adapter
);
3546 netif_device_attach(netdev
);
3549 /* PCI Error Recovery (ERS) */
3550 static const struct pci_error_handlers ixgbevf_err_handler
= {
3551 .error_detected
= ixgbevf_io_error_detected
,
3552 .slot_reset
= ixgbevf_io_slot_reset
,
3553 .resume
= ixgbevf_io_resume
,
3556 static struct pci_driver ixgbevf_driver
= {
3557 .name
= ixgbevf_driver_name
,
3558 .id_table
= ixgbevf_pci_tbl
,
3559 .probe
= ixgbevf_probe
,
3560 .remove
= __devexit_p(ixgbevf_remove
),
3562 /* Power Management Hooks */
3563 .suspend
= ixgbevf_suspend
,
3564 .resume
= ixgbevf_resume
,
3566 .shutdown
= ixgbevf_shutdown
,
3567 .err_handler
= &ixgbevf_err_handler
3571 * ixgbevf_init_module - Driver Registration Routine
3573 * ixgbevf_init_module is the first routine called when the driver is
3574 * loaded. All it does is register with the PCI subsystem.
3576 static int __init
ixgbevf_init_module(void)
3579 pr_info("%s - version %s\n", ixgbevf_driver_string
,
3580 ixgbevf_driver_version
);
3582 pr_info("%s\n", ixgbevf_copyright
);
3584 ret
= pci_register_driver(&ixgbevf_driver
);
3588 module_init(ixgbevf_init_module
);
3591 * ixgbevf_exit_module - Driver Exit Cleanup Routine
3593 * ixgbevf_exit_module is called just before the driver is removed
3596 static void __exit
ixgbevf_exit_module(void)
3598 pci_unregister_driver(&ixgbevf_driver
);
3603 * ixgbevf_get_hw_dev_name - return device name string
3604 * used by hardware layer to print debugging information
3606 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw
*hw
)
3608 struct ixgbevf_adapter
*adapter
= hw
->back
;
3609 return adapter
->netdev
->name
;
3613 module_exit(ixgbevf_exit_module
);
3615 /* ixgbevf_main.c */