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 "2.6.0-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 napi_gro_receive(&q_vector
->napi
, skb
);
295 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
296 * @adapter: address of board private structure
297 * @status_err: hardware indication of status of receive
298 * @skb: skb currently being received and modified
300 static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter
*adapter
,
301 struct ixgbevf_ring
*ring
,
302 u32 status_err
, struct sk_buff
*skb
)
304 skb_checksum_none_assert(skb
);
306 /* Rx csum disabled */
307 if (!(ring
->netdev
->features
& NETIF_F_RXCSUM
))
310 /* if IP and error */
311 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
312 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
313 adapter
->hw_csum_rx_error
++;
317 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
320 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
321 adapter
->hw_csum_rx_error
++;
325 /* It must be a TCP or UDP packet with a valid checksum */
326 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
327 adapter
->hw_csum_rx_good
++;
331 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
332 * @adapter: address of board private structure
334 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter
*adapter
,
335 struct ixgbevf_ring
*rx_ring
,
338 struct pci_dev
*pdev
= adapter
->pdev
;
339 union ixgbe_adv_rx_desc
*rx_desc
;
340 struct ixgbevf_rx_buffer
*bi
;
342 unsigned int i
= rx_ring
->next_to_use
;
344 bi
= &rx_ring
->rx_buffer_info
[i
];
346 while (cleaned_count
--) {
347 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
350 skb
= netdev_alloc_skb_ip_align(rx_ring
->netdev
,
351 rx_ring
->rx_buf_len
);
353 adapter
->alloc_rx_buff_failed
++;
359 bi
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
363 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
366 if (i
== rx_ring
->count
)
368 bi
= &rx_ring
->rx_buffer_info
[i
];
372 if (rx_ring
->next_to_use
!= i
) {
373 rx_ring
->next_to_use
= i
;
375 ixgbevf_release_rx_desc(&adapter
->hw
, rx_ring
, i
);
379 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter
*adapter
,
382 struct ixgbe_hw
*hw
= &adapter
->hw
;
384 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, qmask
);
387 static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector
*q_vector
,
388 struct ixgbevf_ring
*rx_ring
,
391 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
392 struct pci_dev
*pdev
= adapter
->pdev
;
393 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
394 struct ixgbevf_rx_buffer
*rx_buffer_info
, *next_buffer
;
398 int cleaned_count
= 0;
399 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
401 i
= rx_ring
->next_to_clean
;
402 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
403 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
404 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
406 while (staterr
& IXGBE_RXD_STAT_DD
) {
411 rmb(); /* read descriptor and rx_buffer_info after status DD */
412 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
413 skb
= rx_buffer_info
->skb
;
414 prefetch(skb
->data
- NET_IP_ALIGN
);
415 rx_buffer_info
->skb
= NULL
;
417 if (rx_buffer_info
->dma
) {
418 dma_unmap_single(&pdev
->dev
, rx_buffer_info
->dma
,
421 rx_buffer_info
->dma
= 0;
426 if (i
== rx_ring
->count
)
429 next_rxd
= IXGBEVF_RX_DESC(rx_ring
, i
);
433 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
435 if (!(staterr
& IXGBE_RXD_STAT_EOP
)) {
436 skb
->next
= next_buffer
->skb
;
437 IXGBE_CB(skb
->next
)->prev
= skb
;
438 adapter
->non_eop_descs
++;
442 /* we should not be chaining buffers, if we did drop the skb */
443 if (IXGBE_CB(skb
)->prev
) {
445 struct sk_buff
*this = skb
;
446 skb
= IXGBE_CB(skb
)->prev
;
452 /* ERR_MASK will only have valid bits if EOP set */
453 if (unlikely(staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
)) {
454 dev_kfree_skb_irq(skb
);
458 ixgbevf_rx_checksum(adapter
, rx_ring
, staterr
, skb
);
460 /* probably a little skewed due to removing CRC */
461 total_rx_bytes
+= skb
->len
;
465 * Work around issue of some types of VM to VM loop back
466 * packets not getting split correctly
468 if (staterr
& IXGBE_RXD_STAT_LB
) {
469 u32 header_fixup_len
= skb_headlen(skb
);
470 if (header_fixup_len
< 14)
471 skb_push(skb
, header_fixup_len
);
473 skb
->protocol
= eth_type_trans(skb
, rx_ring
->netdev
);
475 ixgbevf_receive_skb(q_vector
, skb
, staterr
, rx_desc
);
478 rx_desc
->wb
.upper
.status_error
= 0;
480 /* return some buffers to hardware, one at a time is too slow */
481 if (cleaned_count
>= IXGBEVF_RX_BUFFER_WRITE
) {
482 ixgbevf_alloc_rx_buffers(adapter
, rx_ring
,
487 /* use prefetched values */
489 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
491 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
494 rx_ring
->next_to_clean
= i
;
495 cleaned_count
= IXGBE_DESC_UNUSED(rx_ring
);
498 ixgbevf_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
500 u64_stats_update_begin(&rx_ring
->syncp
);
501 rx_ring
->total_packets
+= total_rx_packets
;
502 rx_ring
->total_bytes
+= total_rx_bytes
;
503 u64_stats_update_end(&rx_ring
->syncp
);
504 q_vector
->rx
.total_packets
+= total_rx_packets
;
505 q_vector
->rx
.total_bytes
+= total_rx_bytes
;
511 * ixgbevf_poll - NAPI polling calback
512 * @napi: napi struct with our devices info in it
513 * @budget: amount of work driver is allowed to do this pass, in packets
515 * This function will clean more than one or more rings associated with a
518 static int ixgbevf_poll(struct napi_struct
*napi
, int budget
)
520 struct ixgbevf_q_vector
*q_vector
=
521 container_of(napi
, struct ixgbevf_q_vector
, napi
);
522 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
523 struct ixgbevf_ring
*ring
;
525 bool clean_complete
= true;
527 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
528 clean_complete
&= ixgbevf_clean_tx_irq(q_vector
, ring
);
530 /* attempt to distribute budget to each queue fairly, but don't allow
531 * the budget to go below 1 because we'll exit polling */
532 if (q_vector
->rx
.count
> 1)
533 per_ring_budget
= max(budget
/q_vector
->rx
.count
, 1);
535 per_ring_budget
= budget
;
537 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
538 clean_complete
&= ixgbevf_clean_rx_irq(q_vector
, ring
,
541 /* If all work not completed, return budget and keep polling */
544 /* all work done, exit the polling mode */
546 if (adapter
->rx_itr_setting
& 1)
547 ixgbevf_set_itr(q_vector
);
548 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
549 ixgbevf_irq_enable_queues(adapter
,
550 1 << q_vector
->v_idx
);
556 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
557 * @q_vector: structure containing interrupt and ring information
559 static void ixgbevf_write_eitr(struct ixgbevf_q_vector
*q_vector
)
561 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
562 struct ixgbe_hw
*hw
= &adapter
->hw
;
563 int v_idx
= q_vector
->v_idx
;
564 u32 itr_reg
= q_vector
->itr
& IXGBE_MAX_EITR
;
567 * set the WDIS bit to not clear the timer bits and cause an
568 * immediate assertion of the interrupt
570 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
572 IXGBE_WRITE_REG(hw
, IXGBE_VTEITR(v_idx
), itr_reg
);
576 * ixgbevf_configure_msix - Configure MSI-X hardware
577 * @adapter: board private structure
579 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
582 static void ixgbevf_configure_msix(struct ixgbevf_adapter
*adapter
)
584 struct ixgbevf_q_vector
*q_vector
;
585 int q_vectors
, v_idx
;
587 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
588 adapter
->eims_enable_mask
= 0;
591 * Populate the IVAR table and set the ITR values to the
592 * corresponding register.
594 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
595 struct ixgbevf_ring
*ring
;
596 q_vector
= adapter
->q_vector
[v_idx
];
598 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
599 ixgbevf_set_ivar(adapter
, 0, ring
->reg_idx
, v_idx
);
601 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
602 ixgbevf_set_ivar(adapter
, 1, ring
->reg_idx
, v_idx
);
604 if (q_vector
->tx
.ring
&& !q_vector
->rx
.ring
) {
606 if (adapter
->tx_itr_setting
== 1)
607 q_vector
->itr
= IXGBE_10K_ITR
;
609 q_vector
->itr
= adapter
->tx_itr_setting
;
611 /* rx or rx/tx vector */
612 if (adapter
->rx_itr_setting
== 1)
613 q_vector
->itr
= IXGBE_20K_ITR
;
615 q_vector
->itr
= adapter
->rx_itr_setting
;
618 /* add q_vector eims value to global eims_enable_mask */
619 adapter
->eims_enable_mask
|= 1 << v_idx
;
621 ixgbevf_write_eitr(q_vector
);
624 ixgbevf_set_ivar(adapter
, -1, 1, v_idx
);
625 /* setup eims_other and add value to global eims_enable_mask */
626 adapter
->eims_other
= 1 << v_idx
;
627 adapter
->eims_enable_mask
|= adapter
->eims_other
;
634 latency_invalid
= 255
638 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
639 * @q_vector: structure containing interrupt and ring information
640 * @ring_container: structure containing ring performance data
642 * Stores a new ITR value based on packets and byte
643 * counts during the last interrupt. The advantage of per interrupt
644 * computation is faster updates and more accurate ITR for the current
645 * traffic pattern. Constants in this function were computed
646 * based on theoretical maximum wire speed and thresholds were set based
647 * on testing data as well as attempting to minimize response time
648 * while increasing bulk throughput.
650 static void ixgbevf_update_itr(struct ixgbevf_q_vector
*q_vector
,
651 struct ixgbevf_ring_container
*ring_container
)
653 int bytes
= ring_container
->total_bytes
;
654 int packets
= ring_container
->total_packets
;
657 u8 itr_setting
= ring_container
->itr
;
662 /* simple throttlerate management
663 * 0-20MB/s lowest (100000 ints/s)
664 * 20-100MB/s low (20000 ints/s)
665 * 100-1249MB/s bulk (8000 ints/s)
667 /* what was last interrupt timeslice? */
668 timepassed_us
= q_vector
->itr
>> 2;
669 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
671 switch (itr_setting
) {
673 if (bytes_perint
> 10)
674 itr_setting
= low_latency
;
677 if (bytes_perint
> 20)
678 itr_setting
= bulk_latency
;
679 else if (bytes_perint
<= 10)
680 itr_setting
= lowest_latency
;
683 if (bytes_perint
<= 20)
684 itr_setting
= low_latency
;
688 /* clear work counters since we have the values we need */
689 ring_container
->total_bytes
= 0;
690 ring_container
->total_packets
= 0;
692 /* write updated itr to ring container */
693 ring_container
->itr
= itr_setting
;
696 static void ixgbevf_set_itr(struct ixgbevf_q_vector
*q_vector
)
698 u32 new_itr
= q_vector
->itr
;
701 ixgbevf_update_itr(q_vector
, &q_vector
->tx
);
702 ixgbevf_update_itr(q_vector
, &q_vector
->rx
);
704 current_itr
= max(q_vector
->rx
.itr
, q_vector
->tx
.itr
);
706 switch (current_itr
) {
707 /* counts and packets in update_itr are dependent on these numbers */
709 new_itr
= IXGBE_100K_ITR
;
712 new_itr
= IXGBE_20K_ITR
;
716 new_itr
= IXGBE_8K_ITR
;
720 if (new_itr
!= q_vector
->itr
) {
721 /* do an exponential smoothing */
722 new_itr
= (10 * new_itr
* q_vector
->itr
) /
723 ((9 * new_itr
) + q_vector
->itr
);
725 /* save the algorithm value here */
726 q_vector
->itr
= new_itr
;
728 ixgbevf_write_eitr(q_vector
);
732 static irqreturn_t
ixgbevf_msix_other(int irq
, void *data
)
734 struct ixgbevf_adapter
*adapter
= data
;
735 struct ixgbe_hw
*hw
= &adapter
->hw
;
737 hw
->mac
.get_link_status
= 1;
739 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
740 mod_timer(&adapter
->watchdog_timer
, jiffies
);
742 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_other
);
749 * ixgbevf_msix_clean_rings - single unshared vector rx clean (all queues)
751 * @data: pointer to our q_vector struct for this interrupt vector
753 static irqreturn_t
ixgbevf_msix_clean_rings(int irq
, void *data
)
755 struct ixgbevf_q_vector
*q_vector
= data
;
757 /* EIAM disabled interrupts (on this vector) for us */
758 if (q_vector
->rx
.ring
|| q_vector
->tx
.ring
)
759 napi_schedule(&q_vector
->napi
);
764 static inline void map_vector_to_rxq(struct ixgbevf_adapter
*a
, int v_idx
,
767 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
769 a
->rx_ring
[r_idx
].next
= q_vector
->rx
.ring
;
770 q_vector
->rx
.ring
= &a
->rx_ring
[r_idx
];
771 q_vector
->rx
.count
++;
774 static inline void map_vector_to_txq(struct ixgbevf_adapter
*a
, int v_idx
,
777 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
779 a
->tx_ring
[t_idx
].next
= q_vector
->tx
.ring
;
780 q_vector
->tx
.ring
= &a
->tx_ring
[t_idx
];
781 q_vector
->tx
.count
++;
785 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
786 * @adapter: board private structure to initialize
788 * This function maps descriptor rings to the queue-specific vectors
789 * we were allotted through the MSI-X enabling code. Ideally, we'd have
790 * one vector per ring/queue, but on a constrained vector budget, we
791 * group the rings as "efficiently" as possible. You would add new
792 * mapping configurations in here.
794 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter
*adapter
)
798 int rxr_idx
= 0, txr_idx
= 0;
799 int rxr_remaining
= adapter
->num_rx_queues
;
800 int txr_remaining
= adapter
->num_tx_queues
;
805 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
808 * The ideal configuration...
809 * We have enough vectors to map one per queue.
811 if (q_vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
812 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
813 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
815 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
816 map_vector_to_txq(adapter
, v_start
, txr_idx
);
821 * If we don't have enough vectors for a 1-to-1
822 * mapping, we'll have to group them so there are
823 * multiple queues per vector.
825 /* Re-adjusting *qpv takes care of the remainder. */
826 for (i
= v_start
; i
< q_vectors
; i
++) {
827 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
828 for (j
= 0; j
< rqpv
; j
++) {
829 map_vector_to_rxq(adapter
, i
, rxr_idx
);
834 for (i
= v_start
; i
< q_vectors
; i
++) {
835 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
836 for (j
= 0; j
< tqpv
; j
++) {
837 map_vector_to_txq(adapter
, i
, txr_idx
);
848 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
849 * @adapter: board private structure
851 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
852 * interrupts from the kernel.
854 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter
*adapter
)
856 struct net_device
*netdev
= adapter
->netdev
;
857 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
861 for (vector
= 0; vector
< q_vectors
; vector
++) {
862 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[vector
];
863 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
865 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
866 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
867 "%s-%s-%d", netdev
->name
, "TxRx", ri
++);
869 } else if (q_vector
->rx
.ring
) {
870 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
871 "%s-%s-%d", netdev
->name
, "rx", ri
++);
872 } else if (q_vector
->tx
.ring
) {
873 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
874 "%s-%s-%d", netdev
->name
, "tx", ti
++);
876 /* skip this unused q_vector */
879 err
= request_irq(entry
->vector
, &ixgbevf_msix_clean_rings
, 0,
880 q_vector
->name
, q_vector
);
883 "request_irq failed for MSIX interrupt "
885 goto free_queue_irqs
;
889 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
890 &ixgbevf_msix_other
, 0, netdev
->name
, adapter
);
893 "request_irq for msix_other failed: %d\n", err
);
894 goto free_queue_irqs
;
902 free_irq(adapter
->msix_entries
[vector
].vector
,
903 adapter
->q_vector
[vector
]);
905 pci_disable_msix(adapter
->pdev
);
906 kfree(adapter
->msix_entries
);
907 adapter
->msix_entries
= NULL
;
911 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter
*adapter
)
913 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
915 for (i
= 0; i
< q_vectors
; i
++) {
916 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[i
];
917 q_vector
->rx
.ring
= NULL
;
918 q_vector
->tx
.ring
= NULL
;
919 q_vector
->rx
.count
= 0;
920 q_vector
->tx
.count
= 0;
925 * ixgbevf_request_irq - initialize interrupts
926 * @adapter: board private structure
928 * Attempts to configure interrupts using the best available
929 * capabilities of the hardware and kernel.
931 static int ixgbevf_request_irq(struct ixgbevf_adapter
*adapter
)
935 err
= ixgbevf_request_msix_irqs(adapter
);
939 "request_irq failed, Error %d\n", err
);
944 static void ixgbevf_free_irq(struct ixgbevf_adapter
*adapter
)
948 q_vectors
= adapter
->num_msix_vectors
;
951 free_irq(adapter
->msix_entries
[i
].vector
, adapter
);
954 for (; i
>= 0; i
--) {
955 /* free only the irqs that were actually requested */
956 if (!adapter
->q_vector
[i
]->rx
.ring
&&
957 !adapter
->q_vector
[i
]->tx
.ring
)
960 free_irq(adapter
->msix_entries
[i
].vector
,
961 adapter
->q_vector
[i
]);
964 ixgbevf_reset_q_vectors(adapter
);
968 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
969 * @adapter: board private structure
971 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter
*adapter
)
973 struct ixgbe_hw
*hw
= &adapter
->hw
;
976 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, 0);
977 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMC
, ~0);
978 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, 0);
980 IXGBE_WRITE_FLUSH(hw
);
982 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
983 synchronize_irq(adapter
->msix_entries
[i
].vector
);
987 * ixgbevf_irq_enable - Enable default interrupt generation settings
988 * @adapter: board private structure
990 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter
*adapter
)
992 struct ixgbe_hw
*hw
= &adapter
->hw
;
994 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, adapter
->eims_enable_mask
);
995 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, adapter
->eims_enable_mask
);
996 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_enable_mask
);
1000 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1001 * @adapter: board private structure
1003 * Configure the Tx unit of the MAC after a reset.
1005 static void ixgbevf_configure_tx(struct ixgbevf_adapter
*adapter
)
1008 struct ixgbe_hw
*hw
= &adapter
->hw
;
1009 u32 i
, j
, tdlen
, txctrl
;
1011 /* Setup the HW Tx Head and Tail descriptor pointers */
1012 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1013 struct ixgbevf_ring
*ring
= &adapter
->tx_ring
[i
];
1016 tdlen
= ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
1017 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAL(j
),
1018 (tdba
& DMA_BIT_MASK(32)));
1019 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAH(j
), (tdba
>> 32));
1020 IXGBE_WRITE_REG(hw
, IXGBE_VFTDLEN(j
), tdlen
);
1021 IXGBE_WRITE_REG(hw
, IXGBE_VFTDH(j
), 0);
1022 IXGBE_WRITE_REG(hw
, IXGBE_VFTDT(j
), 0);
1023 adapter
->tx_ring
[i
].head
= IXGBE_VFTDH(j
);
1024 adapter
->tx_ring
[i
].tail
= IXGBE_VFTDT(j
);
1025 /* Disable Tx Head Writeback RO bit, since this hoses
1026 * bookkeeping if things aren't delivered in order.
1028 txctrl
= IXGBE_READ_REG(hw
, IXGBE_VFDCA_TXCTRL(j
));
1029 txctrl
&= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN
;
1030 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_TXCTRL(j
), txctrl
);
1034 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1036 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter
*adapter
, int index
)
1038 struct ixgbevf_ring
*rx_ring
;
1039 struct ixgbe_hw
*hw
= &adapter
->hw
;
1042 rx_ring
= &adapter
->rx_ring
[index
];
1044 srrctl
= IXGBE_SRRCTL_DROP_EN
;
1046 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1048 srrctl
|= ALIGN(rx_ring
->rx_buf_len
, 1024) >>
1049 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1051 IXGBE_WRITE_REG(hw
, IXGBE_VFSRRCTL(index
), srrctl
);
1054 static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter
*adapter
)
1056 struct ixgbe_hw
*hw
= &adapter
->hw
;
1057 struct net_device
*netdev
= adapter
->netdev
;
1058 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1062 /* notify the PF of our intent to use this size of frame */
1063 ixgbevf_rlpml_set_vf(hw
, max_frame
);
1065 /* PF will allow an extra 4 bytes past for vlan tagged frames */
1066 max_frame
+= VLAN_HLEN
;
1069 * Make best use of allocation by using all but 1K of a
1070 * power of 2 allocation that will be used for skb->head.
1072 if ((hw
->mac
.type
== ixgbe_mac_X540_vf
) &&
1073 (max_frame
<= MAXIMUM_ETHERNET_VLAN_SIZE
))
1074 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1075 else if (max_frame
<= IXGBEVF_RXBUFFER_3K
)
1076 rx_buf_len
= IXGBEVF_RXBUFFER_3K
;
1077 else if (max_frame
<= IXGBEVF_RXBUFFER_7K
)
1078 rx_buf_len
= IXGBEVF_RXBUFFER_7K
;
1079 else if (max_frame
<= IXGBEVF_RXBUFFER_15K
)
1080 rx_buf_len
= IXGBEVF_RXBUFFER_15K
;
1082 rx_buf_len
= IXGBEVF_MAX_RXBUFFER
;
1084 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1085 adapter
->rx_ring
[i
].rx_buf_len
= rx_buf_len
;
1089 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1090 * @adapter: board private structure
1092 * Configure the Rx unit of the MAC after a reset.
1094 static void ixgbevf_configure_rx(struct ixgbevf_adapter
*adapter
)
1097 struct ixgbe_hw
*hw
= &adapter
->hw
;
1101 /* PSRTYPE must be initialized in 82599 */
1102 IXGBE_WRITE_REG(hw
, IXGBE_VFPSRTYPE
, 0);
1104 /* set_rx_buffer_len must be called before ring initialization */
1105 ixgbevf_set_rx_buffer_len(adapter
);
1107 rdlen
= adapter
->rx_ring
[0].count
* sizeof(union ixgbe_adv_rx_desc
);
1108 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1109 * the Base and Length of the Rx Descriptor Ring */
1110 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1111 rdba
= adapter
->rx_ring
[i
].dma
;
1112 j
= adapter
->rx_ring
[i
].reg_idx
;
1113 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAL(j
),
1114 (rdba
& DMA_BIT_MASK(32)));
1115 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAH(j
), (rdba
>> 32));
1116 IXGBE_WRITE_REG(hw
, IXGBE_VFRDLEN(j
), rdlen
);
1117 IXGBE_WRITE_REG(hw
, IXGBE_VFRDH(j
), 0);
1118 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(j
), 0);
1119 adapter
->rx_ring
[i
].head
= IXGBE_VFRDH(j
);
1120 adapter
->rx_ring
[i
].tail
= IXGBE_VFRDT(j
);
1122 ixgbevf_configure_srrctl(adapter
, j
);
1126 static int ixgbevf_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1128 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1129 struct ixgbe_hw
*hw
= &adapter
->hw
;
1132 if (!hw
->mac
.ops
.set_vfta
)
1135 spin_lock(&adapter
->mbx_lock
);
1137 /* add VID to filter table */
1138 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, true);
1140 spin_unlock(&adapter
->mbx_lock
);
1142 /* translate error return types so error makes sense */
1143 if (err
== IXGBE_ERR_MBX
)
1146 if (err
== IXGBE_ERR_INVALID_ARGUMENT
)
1149 set_bit(vid
, adapter
->active_vlans
);
1154 static int ixgbevf_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1156 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1157 struct ixgbe_hw
*hw
= &adapter
->hw
;
1158 int err
= -EOPNOTSUPP
;
1160 spin_lock(&adapter
->mbx_lock
);
1162 /* remove VID from filter table */
1163 if (hw
->mac
.ops
.set_vfta
)
1164 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, false);
1166 spin_unlock(&adapter
->mbx_lock
);
1168 clear_bit(vid
, adapter
->active_vlans
);
1173 static void ixgbevf_restore_vlan(struct ixgbevf_adapter
*adapter
)
1177 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
1178 ixgbevf_vlan_rx_add_vid(adapter
->netdev
, vid
);
1181 static int ixgbevf_write_uc_addr_list(struct net_device
*netdev
)
1183 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1184 struct ixgbe_hw
*hw
= &adapter
->hw
;
1187 if ((netdev_uc_count(netdev
)) > 10) {
1188 pr_err("Too many unicast filters - No Space\n");
1192 if (!netdev_uc_empty(netdev
)) {
1193 struct netdev_hw_addr
*ha
;
1194 netdev_for_each_uc_addr(ha
, netdev
) {
1195 hw
->mac
.ops
.set_uc_addr(hw
, ++count
, ha
->addr
);
1200 * If the list is empty then send message to PF driver to
1201 * clear all macvlans on this VF.
1203 hw
->mac
.ops
.set_uc_addr(hw
, 0, NULL
);
1210 * ixgbevf_set_rx_mode - Multicast set
1211 * @netdev: network interface device structure
1213 * The set_rx_method entry point is called whenever the multicast address
1214 * list or the network interface flags are updated. This routine is
1215 * responsible for configuring the hardware for proper multicast mode.
1217 static void ixgbevf_set_rx_mode(struct net_device
*netdev
)
1219 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1220 struct ixgbe_hw
*hw
= &adapter
->hw
;
1222 spin_lock(&adapter
->mbx_lock
);
1224 /* reprogram multicast list */
1225 if (hw
->mac
.ops
.update_mc_addr_list
)
1226 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
1228 ixgbevf_write_uc_addr_list(netdev
);
1230 spin_unlock(&adapter
->mbx_lock
);
1233 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter
*adapter
)
1236 struct ixgbevf_q_vector
*q_vector
;
1237 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1239 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1240 q_vector
= adapter
->q_vector
[q_idx
];
1241 napi_enable(&q_vector
->napi
);
1245 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter
*adapter
)
1248 struct ixgbevf_q_vector
*q_vector
;
1249 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1251 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1252 q_vector
= adapter
->q_vector
[q_idx
];
1253 napi_disable(&q_vector
->napi
);
1257 static void ixgbevf_configure(struct ixgbevf_adapter
*adapter
)
1259 struct net_device
*netdev
= adapter
->netdev
;
1262 ixgbevf_set_rx_mode(netdev
);
1264 ixgbevf_restore_vlan(adapter
);
1266 ixgbevf_configure_tx(adapter
);
1267 ixgbevf_configure_rx(adapter
);
1268 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1269 struct ixgbevf_ring
*ring
= &adapter
->rx_ring
[i
];
1270 ixgbevf_alloc_rx_buffers(adapter
, ring
,
1271 IXGBE_DESC_UNUSED(ring
));
1275 #define IXGBE_MAX_RX_DESC_POLL 10
1276 static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter
*adapter
,
1279 struct ixgbe_hw
*hw
= &adapter
->hw
;
1280 int j
= adapter
->rx_ring
[rxr
].reg_idx
;
1283 for (k
= 0; k
< IXGBE_MAX_RX_DESC_POLL
; k
++) {
1284 if (IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
)) & IXGBE_RXDCTL_ENABLE
)
1289 if (k
>= IXGBE_MAX_RX_DESC_POLL
) {
1290 hw_dbg(hw
, "RXDCTL.ENABLE on Rx queue %d "
1291 "not set within the polling period\n", rxr
);
1294 ixgbevf_release_rx_desc(&adapter
->hw
, &adapter
->rx_ring
[rxr
],
1295 (adapter
->rx_ring
[rxr
].count
- 1));
1298 static void ixgbevf_save_reset_stats(struct ixgbevf_adapter
*adapter
)
1300 /* Only save pre-reset stats if there are some */
1301 if (adapter
->stats
.vfgprc
|| adapter
->stats
.vfgptc
) {
1302 adapter
->stats
.saved_reset_vfgprc
+= adapter
->stats
.vfgprc
-
1303 adapter
->stats
.base_vfgprc
;
1304 adapter
->stats
.saved_reset_vfgptc
+= adapter
->stats
.vfgptc
-
1305 adapter
->stats
.base_vfgptc
;
1306 adapter
->stats
.saved_reset_vfgorc
+= adapter
->stats
.vfgorc
-
1307 adapter
->stats
.base_vfgorc
;
1308 adapter
->stats
.saved_reset_vfgotc
+= adapter
->stats
.vfgotc
-
1309 adapter
->stats
.base_vfgotc
;
1310 adapter
->stats
.saved_reset_vfmprc
+= adapter
->stats
.vfmprc
-
1311 adapter
->stats
.base_vfmprc
;
1315 static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter
*adapter
)
1317 struct ixgbe_hw
*hw
= &adapter
->hw
;
1319 adapter
->stats
.last_vfgprc
= IXGBE_READ_REG(hw
, IXGBE_VFGPRC
);
1320 adapter
->stats
.last_vfgorc
= IXGBE_READ_REG(hw
, IXGBE_VFGORC_LSB
);
1321 adapter
->stats
.last_vfgorc
|=
1322 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGORC_MSB
))) << 32);
1323 adapter
->stats
.last_vfgptc
= IXGBE_READ_REG(hw
, IXGBE_VFGPTC
);
1324 adapter
->stats
.last_vfgotc
= IXGBE_READ_REG(hw
, IXGBE_VFGOTC_LSB
);
1325 adapter
->stats
.last_vfgotc
|=
1326 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGOTC_MSB
))) << 32);
1327 adapter
->stats
.last_vfmprc
= IXGBE_READ_REG(hw
, IXGBE_VFMPRC
);
1329 adapter
->stats
.base_vfgprc
= adapter
->stats
.last_vfgprc
;
1330 adapter
->stats
.base_vfgorc
= adapter
->stats
.last_vfgorc
;
1331 adapter
->stats
.base_vfgptc
= adapter
->stats
.last_vfgptc
;
1332 adapter
->stats
.base_vfgotc
= adapter
->stats
.last_vfgotc
;
1333 adapter
->stats
.base_vfmprc
= adapter
->stats
.last_vfmprc
;
1336 static void ixgbevf_negotiate_api(struct ixgbevf_adapter
*adapter
)
1338 struct ixgbe_hw
*hw
= &adapter
->hw
;
1339 int api
[] = { ixgbe_mbox_api_11
,
1341 ixgbe_mbox_api_unknown
};
1342 int err
= 0, idx
= 0;
1344 spin_lock(&adapter
->mbx_lock
);
1346 while (api
[idx
] != ixgbe_mbox_api_unknown
) {
1347 err
= ixgbevf_negotiate_api_version(hw
, api
[idx
]);
1353 spin_unlock(&adapter
->mbx_lock
);
1356 static void ixgbevf_up_complete(struct ixgbevf_adapter
*adapter
)
1358 struct net_device
*netdev
= adapter
->netdev
;
1359 struct ixgbe_hw
*hw
= &adapter
->hw
;
1361 int num_rx_rings
= adapter
->num_rx_queues
;
1364 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1365 j
= adapter
->tx_ring
[i
].reg_idx
;
1366 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1367 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
1368 txdctl
|= (8 << 16);
1369 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
), txdctl
);
1372 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1373 j
= adapter
->tx_ring
[i
].reg_idx
;
1374 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1375 txdctl
|= IXGBE_TXDCTL_ENABLE
;
1376 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
), txdctl
);
1379 for (i
= 0; i
< num_rx_rings
; i
++) {
1380 j
= adapter
->rx_ring
[i
].reg_idx
;
1381 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
));
1382 rxdctl
|= IXGBE_RXDCTL_ENABLE
| IXGBE_RXDCTL_VME
;
1383 if (hw
->mac
.type
== ixgbe_mac_X540_vf
) {
1384 rxdctl
&= ~IXGBE_RXDCTL_RLPMLMASK
;
1385 rxdctl
|= ((netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
) |
1386 IXGBE_RXDCTL_RLPML_EN
);
1388 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(j
), rxdctl
);
1389 ixgbevf_rx_desc_queue_enable(adapter
, i
);
1392 ixgbevf_configure_msix(adapter
);
1394 spin_lock(&adapter
->mbx_lock
);
1396 if (hw
->mac
.ops
.set_rar
) {
1397 if (is_valid_ether_addr(hw
->mac
.addr
))
1398 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
1400 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.perm_addr
, 0);
1403 spin_unlock(&adapter
->mbx_lock
);
1405 clear_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1406 ixgbevf_napi_enable_all(adapter
);
1408 /* enable transmits */
1409 netif_tx_start_all_queues(netdev
);
1411 ixgbevf_save_reset_stats(adapter
);
1412 ixgbevf_init_last_counter_stats(adapter
);
1414 hw
->mac
.get_link_status
= 1;
1415 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1418 static int ixgbevf_reset_queues(struct ixgbevf_adapter
*adapter
)
1420 struct ixgbe_hw
*hw
= &adapter
->hw
;
1421 struct ixgbevf_ring
*rx_ring
;
1422 unsigned int def_q
= 0;
1423 unsigned int num_tcs
= 0;
1424 unsigned int num_rx_queues
= 1;
1427 spin_lock(&adapter
->mbx_lock
);
1429 /* fetch queue configuration from the PF */
1430 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
1432 spin_unlock(&adapter
->mbx_lock
);
1438 /* update default Tx ring register index */
1439 adapter
->tx_ring
[0].reg_idx
= def_q
;
1441 /* we need as many queues as traffic classes */
1442 num_rx_queues
= num_tcs
;
1445 /* nothing to do if we have the correct number of queues */
1446 if (adapter
->num_rx_queues
== num_rx_queues
)
1449 /* allocate new rings */
1450 rx_ring
= kcalloc(num_rx_queues
,
1451 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1455 /* setup ring fields */
1456 for (i
= 0; i
< num_rx_queues
; i
++) {
1457 rx_ring
[i
].count
= adapter
->rx_ring_count
;
1458 rx_ring
[i
].queue_index
= i
;
1459 rx_ring
[i
].reg_idx
= i
;
1460 rx_ring
[i
].dev
= &adapter
->pdev
->dev
;
1461 rx_ring
[i
].netdev
= adapter
->netdev
;
1463 /* allocate resources on the ring */
1464 err
= ixgbevf_setup_rx_resources(adapter
, &rx_ring
[i
]);
1468 ixgbevf_free_rx_resources(adapter
, &rx_ring
[i
]);
1475 /* free the existing rings and queues */
1476 ixgbevf_free_all_rx_resources(adapter
);
1477 adapter
->num_rx_queues
= 0;
1478 kfree(adapter
->rx_ring
);
1480 /* move new rings into position on the adapter struct */
1481 adapter
->rx_ring
= rx_ring
;
1482 adapter
->num_rx_queues
= num_rx_queues
;
1484 /* reset ring to vector mapping */
1485 ixgbevf_reset_q_vectors(adapter
);
1486 ixgbevf_map_rings_to_vectors(adapter
);
1491 void ixgbevf_up(struct ixgbevf_adapter
*adapter
)
1493 struct ixgbe_hw
*hw
= &adapter
->hw
;
1495 ixgbevf_negotiate_api(adapter
);
1497 ixgbevf_reset_queues(adapter
);
1499 ixgbevf_configure(adapter
);
1501 ixgbevf_up_complete(adapter
);
1503 /* clear any pending interrupts, may auto mask */
1504 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
1506 ixgbevf_irq_enable(adapter
);
1510 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1511 * @adapter: board private structure
1512 * @rx_ring: ring to free buffers from
1514 static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter
*adapter
,
1515 struct ixgbevf_ring
*rx_ring
)
1517 struct pci_dev
*pdev
= adapter
->pdev
;
1521 if (!rx_ring
->rx_buffer_info
)
1524 /* Free all the Rx ring sk_buffs */
1525 for (i
= 0; i
< rx_ring
->count
; i
++) {
1526 struct ixgbevf_rx_buffer
*rx_buffer_info
;
1528 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
1529 if (rx_buffer_info
->dma
) {
1530 dma_unmap_single(&pdev
->dev
, rx_buffer_info
->dma
,
1531 rx_ring
->rx_buf_len
,
1533 rx_buffer_info
->dma
= 0;
1535 if (rx_buffer_info
->skb
) {
1536 struct sk_buff
*skb
= rx_buffer_info
->skb
;
1537 rx_buffer_info
->skb
= NULL
;
1539 struct sk_buff
*this = skb
;
1540 skb
= IXGBE_CB(skb
)->prev
;
1541 dev_kfree_skb(this);
1546 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
1547 memset(rx_ring
->rx_buffer_info
, 0, size
);
1549 /* Zero out the descriptor ring */
1550 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1552 rx_ring
->next_to_clean
= 0;
1553 rx_ring
->next_to_use
= 0;
1556 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1558 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1562 * ixgbevf_clean_tx_ring - Free Tx Buffers
1563 * @adapter: board private structure
1564 * @tx_ring: ring to be cleaned
1566 static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter
*adapter
,
1567 struct ixgbevf_ring
*tx_ring
)
1569 struct ixgbevf_tx_buffer
*tx_buffer_info
;
1573 if (!tx_ring
->tx_buffer_info
)
1576 /* Free all the Tx ring sk_buffs */
1578 for (i
= 0; i
< tx_ring
->count
; i
++) {
1579 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
1580 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
1583 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
1584 memset(tx_ring
->tx_buffer_info
, 0, size
);
1586 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1588 tx_ring
->next_to_use
= 0;
1589 tx_ring
->next_to_clean
= 0;
1592 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1594 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1598 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1599 * @adapter: board private structure
1601 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter
*adapter
)
1605 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1606 ixgbevf_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1610 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1611 * @adapter: board private structure
1613 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter
*adapter
)
1617 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1618 ixgbevf_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1621 void ixgbevf_down(struct ixgbevf_adapter
*adapter
)
1623 struct net_device
*netdev
= adapter
->netdev
;
1624 struct ixgbe_hw
*hw
= &adapter
->hw
;
1628 /* signal that we are down to the interrupt handler */
1629 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1630 /* disable receives */
1632 netif_tx_disable(netdev
);
1636 netif_tx_stop_all_queues(netdev
);
1638 ixgbevf_irq_disable(adapter
);
1640 ixgbevf_napi_disable_all(adapter
);
1642 del_timer_sync(&adapter
->watchdog_timer
);
1643 /* can't call flush scheduled work here because it can deadlock
1644 * if linkwatch_event tries to acquire the rtnl_lock which we are
1646 while (adapter
->flags
& IXGBE_FLAG_IN_WATCHDOG_TASK
)
1649 /* disable transmits in the hardware now that interrupts are off */
1650 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1651 j
= adapter
->tx_ring
[i
].reg_idx
;
1652 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1653 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
),
1654 (txdctl
& ~IXGBE_TXDCTL_ENABLE
));
1657 netif_carrier_off(netdev
);
1659 if (!pci_channel_offline(adapter
->pdev
))
1660 ixgbevf_reset(adapter
);
1662 ixgbevf_clean_all_tx_rings(adapter
);
1663 ixgbevf_clean_all_rx_rings(adapter
);
1666 void ixgbevf_reinit_locked(struct ixgbevf_adapter
*adapter
)
1668 WARN_ON(in_interrupt());
1670 while (test_and_set_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
1674 * Check if PF is up before re-init. If not then skip until
1675 * later when the PF is up and ready to service requests from
1676 * the VF via mailbox. If the VF is up and running then the
1677 * watchdog task will continue to schedule reset tasks until
1678 * the PF is up and running.
1680 ixgbevf_down(adapter
);
1681 ixgbevf_up(adapter
);
1683 clear_bit(__IXGBEVF_RESETTING
, &adapter
->state
);
1686 void ixgbevf_reset(struct ixgbevf_adapter
*adapter
)
1688 struct ixgbe_hw
*hw
= &adapter
->hw
;
1689 struct net_device
*netdev
= adapter
->netdev
;
1691 spin_lock(&adapter
->mbx_lock
);
1693 if (hw
->mac
.ops
.reset_hw(hw
))
1694 hw_dbg(hw
, "PF still resetting\n");
1696 hw
->mac
.ops
.init_hw(hw
);
1698 spin_unlock(&adapter
->mbx_lock
);
1700 if (is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
1701 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
1703 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
,
1708 static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter
*adapter
,
1711 int err
, vector_threshold
;
1713 /* We'll want at least 2 (vector_threshold):
1714 * 1) TxQ[0] + RxQ[0] handler
1715 * 2) Other (Link Status Change, etc.)
1717 vector_threshold
= MIN_MSIX_COUNT
;
1719 /* The more we get, the more we will assign to Tx/Rx Cleanup
1720 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1721 * Right now, we simply care about how many we'll get; we'll
1722 * set them up later while requesting irq's.
1724 while (vectors
>= vector_threshold
) {
1725 err
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
1727 if (!err
) /* Success in acquiring all requested vectors. */
1730 vectors
= 0; /* Nasty failure, quit now */
1731 else /* err == number of vectors we should try again with */
1735 if (vectors
< vector_threshold
) {
1736 /* Can't allocate enough MSI-X interrupts? Oh well.
1737 * This just means we'll go with either a single MSI
1738 * vector or fall back to legacy interrupts.
1740 hw_dbg(&adapter
->hw
,
1741 "Unable to allocate MSI-X interrupts\n");
1742 kfree(adapter
->msix_entries
);
1743 adapter
->msix_entries
= NULL
;
1746 * Adjust for only the vectors we'll use, which is minimum
1747 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1748 * vectors we were allocated.
1750 adapter
->num_msix_vectors
= vectors
;
1755 * ixgbevf_set_num_queues - Allocate queues for device, feature dependent
1756 * @adapter: board private structure to initialize
1758 * This is the top level queue allocation routine. The order here is very
1759 * important, starting with the "most" number of features turned on at once,
1760 * and ending with the smallest set of features. This way large combinations
1761 * can be allocated if they're turned on, and smaller combinations are the
1762 * fallthrough conditions.
1765 static void ixgbevf_set_num_queues(struct ixgbevf_adapter
*adapter
)
1767 /* Start with base case */
1768 adapter
->num_rx_queues
= 1;
1769 adapter
->num_tx_queues
= 1;
1773 * ixgbevf_alloc_queues - Allocate memory for all rings
1774 * @adapter: board private structure to initialize
1776 * We allocate one ring per queue at run-time since we don't know the
1777 * number of queues at compile-time. The polling_netdev array is
1778 * intended for Multiqueue, but should work fine with a single queue.
1780 static int ixgbevf_alloc_queues(struct ixgbevf_adapter
*adapter
)
1784 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1785 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1786 if (!adapter
->tx_ring
)
1787 goto err_tx_ring_allocation
;
1789 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1790 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1791 if (!adapter
->rx_ring
)
1792 goto err_rx_ring_allocation
;
1794 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1795 adapter
->tx_ring
[i
].count
= adapter
->tx_ring_count
;
1796 adapter
->tx_ring
[i
].queue_index
= i
;
1797 /* reg_idx may be remapped later by DCB config */
1798 adapter
->tx_ring
[i
].reg_idx
= i
;
1799 adapter
->tx_ring
[i
].dev
= &adapter
->pdev
->dev
;
1800 adapter
->tx_ring
[i
].netdev
= adapter
->netdev
;
1803 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1804 adapter
->rx_ring
[i
].count
= adapter
->rx_ring_count
;
1805 adapter
->rx_ring
[i
].queue_index
= i
;
1806 adapter
->rx_ring
[i
].reg_idx
= i
;
1807 adapter
->rx_ring
[i
].dev
= &adapter
->pdev
->dev
;
1808 adapter
->rx_ring
[i
].netdev
= adapter
->netdev
;
1813 err_rx_ring_allocation
:
1814 kfree(adapter
->tx_ring
);
1815 err_tx_ring_allocation
:
1820 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
1821 * @adapter: board private structure to initialize
1823 * Attempt to configure the interrupts using the best available
1824 * capabilities of the hardware and the kernel.
1826 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter
*adapter
)
1828 struct net_device
*netdev
= adapter
->netdev
;
1830 int vector
, v_budget
;
1833 * It's easy to be greedy for MSI-X vectors, but it really
1834 * doesn't do us much good if we have a lot more vectors
1835 * than CPU's. So let's be conservative and only ask for
1836 * (roughly) the same number of vectors as there are CPU's.
1837 * The default is to use pairs of vectors.
1839 v_budget
= max(adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1840 v_budget
= min_t(int, v_budget
, num_online_cpus());
1841 v_budget
+= NON_Q_VECTORS
;
1843 /* A failure in MSI-X entry allocation isn't fatal, but it does
1844 * mean we disable MSI-X capabilities of the adapter. */
1845 adapter
->msix_entries
= kcalloc(v_budget
,
1846 sizeof(struct msix_entry
), GFP_KERNEL
);
1847 if (!adapter
->msix_entries
) {
1852 for (vector
= 0; vector
< v_budget
; vector
++)
1853 adapter
->msix_entries
[vector
].entry
= vector
;
1855 ixgbevf_acquire_msix_vectors(adapter
, v_budget
);
1857 err
= netif_set_real_num_tx_queues(netdev
, adapter
->num_tx_queues
);
1861 err
= netif_set_real_num_rx_queues(netdev
, adapter
->num_rx_queues
);
1868 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
1869 * @adapter: board private structure to initialize
1871 * We allocate one q_vector per queue interrupt. If allocation fails we
1874 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter
*adapter
)
1876 int q_idx
, num_q_vectors
;
1877 struct ixgbevf_q_vector
*q_vector
;
1879 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1881 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1882 q_vector
= kzalloc(sizeof(struct ixgbevf_q_vector
), GFP_KERNEL
);
1885 q_vector
->adapter
= adapter
;
1886 q_vector
->v_idx
= q_idx
;
1887 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
1889 adapter
->q_vector
[q_idx
] = q_vector
;
1897 q_vector
= adapter
->q_vector
[q_idx
];
1898 netif_napi_del(&q_vector
->napi
);
1900 adapter
->q_vector
[q_idx
] = NULL
;
1906 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
1907 * @adapter: board private structure to initialize
1909 * This function frees the memory allocated to the q_vectors. In addition if
1910 * NAPI is enabled it will delete any references to the NAPI struct prior
1911 * to freeing the q_vector.
1913 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter
*adapter
)
1915 int q_idx
, num_q_vectors
;
1918 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1919 napi_vectors
= adapter
->num_rx_queues
;
1921 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1922 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
1924 adapter
->q_vector
[q_idx
] = NULL
;
1925 if (q_idx
< napi_vectors
)
1926 netif_napi_del(&q_vector
->napi
);
1932 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
1933 * @adapter: board private structure
1936 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter
*adapter
)
1938 pci_disable_msix(adapter
->pdev
);
1939 kfree(adapter
->msix_entries
);
1940 adapter
->msix_entries
= NULL
;
1944 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
1945 * @adapter: board private structure to initialize
1948 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
1952 /* Number of supported queues */
1953 ixgbevf_set_num_queues(adapter
);
1955 err
= ixgbevf_set_interrupt_capability(adapter
);
1957 hw_dbg(&adapter
->hw
,
1958 "Unable to setup interrupt capabilities\n");
1959 goto err_set_interrupt
;
1962 err
= ixgbevf_alloc_q_vectors(adapter
);
1964 hw_dbg(&adapter
->hw
, "Unable to allocate memory for queue "
1966 goto err_alloc_q_vectors
;
1969 err
= ixgbevf_alloc_queues(adapter
);
1971 pr_err("Unable to allocate memory for queues\n");
1972 goto err_alloc_queues
;
1975 hw_dbg(&adapter
->hw
, "Multiqueue %s: Rx Queue count = %u, "
1976 "Tx Queue count = %u\n",
1977 (adapter
->num_rx_queues
> 1) ? "Enabled" :
1978 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1980 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1984 ixgbevf_free_q_vectors(adapter
);
1985 err_alloc_q_vectors
:
1986 ixgbevf_reset_interrupt_capability(adapter
);
1992 * ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings
1993 * @adapter: board private structure to clear interrupt scheme on
1995 * We go through and clear interrupt specific resources and reset the structure
1996 * to pre-load conditions
1998 static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2000 adapter
->num_tx_queues
= 0;
2001 adapter
->num_rx_queues
= 0;
2003 ixgbevf_free_q_vectors(adapter
);
2004 ixgbevf_reset_interrupt_capability(adapter
);
2008 * ixgbevf_sw_init - Initialize general software structures
2009 * (struct ixgbevf_adapter)
2010 * @adapter: board private structure to initialize
2012 * ixgbevf_sw_init initializes the Adapter private data structure.
2013 * Fields are initialized based on PCI device information and
2014 * OS network device settings (MTU size).
2016 static int __devinit
ixgbevf_sw_init(struct ixgbevf_adapter
*adapter
)
2018 struct ixgbe_hw
*hw
= &adapter
->hw
;
2019 struct pci_dev
*pdev
= adapter
->pdev
;
2022 /* PCI config space info */
2024 hw
->vendor_id
= pdev
->vendor
;
2025 hw
->device_id
= pdev
->device
;
2026 hw
->revision_id
= pdev
->revision
;
2027 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2028 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2030 hw
->mbx
.ops
.init_params(hw
);
2032 /* assume legacy case in which PF would only give VF 2 queues */
2033 hw
->mac
.max_tx_queues
= 2;
2034 hw
->mac
.max_rx_queues
= 2;
2036 err
= hw
->mac
.ops
.reset_hw(hw
);
2038 dev_info(&pdev
->dev
,
2039 "PF still in reset state, assigning new address\n");
2040 eth_hw_addr_random(adapter
->netdev
);
2041 memcpy(adapter
->hw
.mac
.addr
, adapter
->netdev
->dev_addr
,
2042 adapter
->netdev
->addr_len
);
2044 err
= hw
->mac
.ops
.init_hw(hw
);
2046 pr_err("init_shared_code failed: %d\n", err
);
2049 memcpy(adapter
->netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
2050 adapter
->netdev
->addr_len
);
2053 /* lock to protect mailbox accesses */
2054 spin_lock_init(&adapter
->mbx_lock
);
2056 /* Enable dynamic interrupt throttling rates */
2057 adapter
->rx_itr_setting
= 1;
2058 adapter
->tx_itr_setting
= 1;
2060 /* set default ring sizes */
2061 adapter
->tx_ring_count
= IXGBEVF_DEFAULT_TXD
;
2062 adapter
->rx_ring_count
= IXGBEVF_DEFAULT_RXD
;
2064 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2071 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2073 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2074 if (current_counter < last_counter) \
2075 counter += 0x100000000LL; \
2076 last_counter = current_counter; \
2077 counter &= 0xFFFFFFFF00000000LL; \
2078 counter |= current_counter; \
2081 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2083 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2084 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2085 u64 current_counter = (current_counter_msb << 32) | \
2086 current_counter_lsb; \
2087 if (current_counter < last_counter) \
2088 counter += 0x1000000000LL; \
2089 last_counter = current_counter; \
2090 counter &= 0xFFFFFFF000000000LL; \
2091 counter |= current_counter; \
2094 * ixgbevf_update_stats - Update the board statistics counters.
2095 * @adapter: board private structure
2097 void ixgbevf_update_stats(struct ixgbevf_adapter
*adapter
)
2099 struct ixgbe_hw
*hw
= &adapter
->hw
;
2101 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC
, adapter
->stats
.last_vfgprc
,
2102 adapter
->stats
.vfgprc
);
2103 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC
, adapter
->stats
.last_vfgptc
,
2104 adapter
->stats
.vfgptc
);
2105 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB
, IXGBE_VFGORC_MSB
,
2106 adapter
->stats
.last_vfgorc
,
2107 adapter
->stats
.vfgorc
);
2108 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB
, IXGBE_VFGOTC_MSB
,
2109 adapter
->stats
.last_vfgotc
,
2110 adapter
->stats
.vfgotc
);
2111 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC
, adapter
->stats
.last_vfmprc
,
2112 adapter
->stats
.vfmprc
);
2116 * ixgbevf_watchdog - Timer Call-back
2117 * @data: pointer to adapter cast into an unsigned long
2119 static void ixgbevf_watchdog(unsigned long data
)
2121 struct ixgbevf_adapter
*adapter
= (struct ixgbevf_adapter
*)data
;
2122 struct ixgbe_hw
*hw
= &adapter
->hw
;
2127 * Do the watchdog outside of interrupt context due to the lovely
2128 * delays that some of the newer hardware requires
2131 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2132 goto watchdog_short_circuit
;
2134 /* get one bit for every active tx/rx interrupt vector */
2135 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
2136 struct ixgbevf_q_vector
*qv
= adapter
->q_vector
[i
];
2137 if (qv
->rx
.ring
|| qv
->tx
.ring
)
2141 IXGBE_WRITE_REG(hw
, IXGBE_VTEICS
, eics
);
2143 watchdog_short_circuit
:
2144 schedule_work(&adapter
->watchdog_task
);
2148 * ixgbevf_tx_timeout - Respond to a Tx Hang
2149 * @netdev: network interface device structure
2151 static void ixgbevf_tx_timeout(struct net_device
*netdev
)
2153 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2155 /* Do the reset outside of interrupt context */
2156 schedule_work(&adapter
->reset_task
);
2159 static void ixgbevf_reset_task(struct work_struct
*work
)
2161 struct ixgbevf_adapter
*adapter
;
2162 adapter
= container_of(work
, struct ixgbevf_adapter
, reset_task
);
2164 /* If we're already down or resetting, just bail */
2165 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2166 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2169 adapter
->tx_timeout_count
++;
2171 ixgbevf_reinit_locked(adapter
);
2175 * ixgbevf_watchdog_task - worker thread to bring link up
2176 * @work: pointer to work_struct containing our data
2178 static void ixgbevf_watchdog_task(struct work_struct
*work
)
2180 struct ixgbevf_adapter
*adapter
= container_of(work
,
2181 struct ixgbevf_adapter
,
2183 struct net_device
*netdev
= adapter
->netdev
;
2184 struct ixgbe_hw
*hw
= &adapter
->hw
;
2185 u32 link_speed
= adapter
->link_speed
;
2186 bool link_up
= adapter
->link_up
;
2188 adapter
->flags
|= IXGBE_FLAG_IN_WATCHDOG_TASK
;
2191 * Always check the link on the watchdog because we have
2194 if (hw
->mac
.ops
.check_link
) {
2197 spin_lock(&adapter
->mbx_lock
);
2199 need_reset
= hw
->mac
.ops
.check_link(hw
, &link_speed
,
2202 spin_unlock(&adapter
->mbx_lock
);
2205 adapter
->link_up
= link_up
;
2206 adapter
->link_speed
= link_speed
;
2207 netif_carrier_off(netdev
);
2208 netif_tx_stop_all_queues(netdev
);
2209 schedule_work(&adapter
->reset_task
);
2213 /* always assume link is up, if no check link
2215 link_speed
= IXGBE_LINK_SPEED_10GB_FULL
;
2218 adapter
->link_up
= link_up
;
2219 adapter
->link_speed
= link_speed
;
2222 if (!netif_carrier_ok(netdev
)) {
2223 hw_dbg(&adapter
->hw
, "NIC Link is Up, %u Gbps\n",
2224 (link_speed
== IXGBE_LINK_SPEED_10GB_FULL
) ?
2226 netif_carrier_on(netdev
);
2227 netif_tx_wake_all_queues(netdev
);
2230 adapter
->link_up
= false;
2231 adapter
->link_speed
= 0;
2232 if (netif_carrier_ok(netdev
)) {
2233 hw_dbg(&adapter
->hw
, "NIC Link is Down\n");
2234 netif_carrier_off(netdev
);
2235 netif_tx_stop_all_queues(netdev
);
2239 ixgbevf_update_stats(adapter
);
2242 /* Reset the timer */
2243 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2244 mod_timer(&adapter
->watchdog_timer
,
2245 round_jiffies(jiffies
+ (2 * HZ
)));
2247 adapter
->flags
&= ~IXGBE_FLAG_IN_WATCHDOG_TASK
;
2251 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2252 * @adapter: board private structure
2253 * @tx_ring: Tx descriptor ring for a specific queue
2255 * Free all transmit software resources
2257 void ixgbevf_free_tx_resources(struct ixgbevf_adapter
*adapter
,
2258 struct ixgbevf_ring
*tx_ring
)
2260 struct pci_dev
*pdev
= adapter
->pdev
;
2262 ixgbevf_clean_tx_ring(adapter
, tx_ring
);
2264 vfree(tx_ring
->tx_buffer_info
);
2265 tx_ring
->tx_buffer_info
= NULL
;
2267 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2270 tx_ring
->desc
= NULL
;
2274 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2275 * @adapter: board private structure
2277 * Free all transmit software resources
2279 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2283 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2284 if (adapter
->tx_ring
[i
].desc
)
2285 ixgbevf_free_tx_resources(adapter
,
2286 &adapter
->tx_ring
[i
]);
2291 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2292 * @adapter: board private structure
2293 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2295 * Return 0 on success, negative on failure
2297 int ixgbevf_setup_tx_resources(struct ixgbevf_adapter
*adapter
,
2298 struct ixgbevf_ring
*tx_ring
)
2300 struct pci_dev
*pdev
= adapter
->pdev
;
2303 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
2304 tx_ring
->tx_buffer_info
= vzalloc(size
);
2305 if (!tx_ring
->tx_buffer_info
)
2308 /* round up to nearest 4K */
2309 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
2310 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2312 tx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, tx_ring
->size
,
2313 &tx_ring
->dma
, GFP_KERNEL
);
2317 tx_ring
->next_to_use
= 0;
2318 tx_ring
->next_to_clean
= 0;
2322 vfree(tx_ring
->tx_buffer_info
);
2323 tx_ring
->tx_buffer_info
= NULL
;
2324 hw_dbg(&adapter
->hw
, "Unable to allocate memory for the transmit "
2325 "descriptor ring\n");
2330 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2331 * @adapter: board private structure
2333 * If this function returns with an error, then it's possible one or
2334 * more of the rings is populated (while the rest are not). It is the
2335 * callers duty to clean those orphaned rings.
2337 * Return 0 on success, negative on failure
2339 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2343 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2344 err
= ixgbevf_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2347 hw_dbg(&adapter
->hw
,
2348 "Allocation for Tx Queue %u failed\n", i
);
2356 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2357 * @adapter: board private structure
2358 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2360 * Returns 0 on success, negative on failure
2362 int ixgbevf_setup_rx_resources(struct ixgbevf_adapter
*adapter
,
2363 struct ixgbevf_ring
*rx_ring
)
2365 struct pci_dev
*pdev
= adapter
->pdev
;
2368 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
2369 rx_ring
->rx_buffer_info
= vzalloc(size
);
2370 if (!rx_ring
->rx_buffer_info
)
2373 /* Round up to nearest 4K */
2374 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
2375 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2377 rx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, rx_ring
->size
,
2378 &rx_ring
->dma
, GFP_KERNEL
);
2380 if (!rx_ring
->desc
) {
2381 hw_dbg(&adapter
->hw
,
2382 "Unable to allocate memory for "
2383 "the receive descriptor ring\n");
2384 vfree(rx_ring
->rx_buffer_info
);
2385 rx_ring
->rx_buffer_info
= NULL
;
2389 rx_ring
->next_to_clean
= 0;
2390 rx_ring
->next_to_use
= 0;
2398 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2399 * @adapter: board private structure
2401 * If this function returns with an error, then it's possible one or
2402 * more of the rings is populated (while the rest are not). It is the
2403 * callers duty to clean those orphaned rings.
2405 * Return 0 on success, negative on failure
2407 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2411 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2412 err
= ixgbevf_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2415 hw_dbg(&adapter
->hw
,
2416 "Allocation for Rx Queue %u failed\n", i
);
2423 * ixgbevf_free_rx_resources - Free Rx Resources
2424 * @adapter: board private structure
2425 * @rx_ring: ring to clean the resources from
2427 * Free all receive software resources
2429 void ixgbevf_free_rx_resources(struct ixgbevf_adapter
*adapter
,
2430 struct ixgbevf_ring
*rx_ring
)
2432 struct pci_dev
*pdev
= adapter
->pdev
;
2434 ixgbevf_clean_rx_ring(adapter
, rx_ring
);
2436 vfree(rx_ring
->rx_buffer_info
);
2437 rx_ring
->rx_buffer_info
= NULL
;
2439 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2442 rx_ring
->desc
= NULL
;
2446 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2447 * @adapter: board private structure
2449 * Free all receive software resources
2451 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2455 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2456 if (adapter
->rx_ring
[i
].desc
)
2457 ixgbevf_free_rx_resources(adapter
,
2458 &adapter
->rx_ring
[i
]);
2461 static int ixgbevf_setup_queues(struct ixgbevf_adapter
*adapter
)
2463 struct ixgbe_hw
*hw
= &adapter
->hw
;
2464 struct ixgbevf_ring
*rx_ring
;
2465 unsigned int def_q
= 0;
2466 unsigned int num_tcs
= 0;
2467 unsigned int num_rx_queues
= 1;
2470 spin_lock(&adapter
->mbx_lock
);
2472 /* fetch queue configuration from the PF */
2473 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
2475 spin_unlock(&adapter
->mbx_lock
);
2481 /* update default Tx ring register index */
2482 adapter
->tx_ring
[0].reg_idx
= def_q
;
2484 /* we need as many queues as traffic classes */
2485 num_rx_queues
= num_tcs
;
2488 /* nothing to do if we have the correct number of queues */
2489 if (adapter
->num_rx_queues
== num_rx_queues
)
2492 /* allocate new rings */
2493 rx_ring
= kcalloc(num_rx_queues
,
2494 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
2498 /* setup ring fields */
2499 for (i
= 0; i
< num_rx_queues
; i
++) {
2500 rx_ring
[i
].count
= adapter
->rx_ring_count
;
2501 rx_ring
[i
].queue_index
= i
;
2502 rx_ring
[i
].reg_idx
= i
;
2503 rx_ring
[i
].dev
= &adapter
->pdev
->dev
;
2504 rx_ring
[i
].netdev
= adapter
->netdev
;
2507 /* free the existing ring and queues */
2508 adapter
->num_rx_queues
= 0;
2509 kfree(adapter
->rx_ring
);
2511 /* move new rings into position on the adapter struct */
2512 adapter
->rx_ring
= rx_ring
;
2513 adapter
->num_rx_queues
= num_rx_queues
;
2519 * ixgbevf_open - Called when a network interface is made active
2520 * @netdev: network interface device structure
2522 * Returns 0 on success, negative value on failure
2524 * The open entry point is called when a network interface is made
2525 * active by the system (IFF_UP). At this point all resources needed
2526 * for transmit and receive operations are allocated, the interrupt
2527 * handler is registered with the OS, the watchdog timer is started,
2528 * and the stack is notified that the interface is ready.
2530 static int ixgbevf_open(struct net_device
*netdev
)
2532 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2533 struct ixgbe_hw
*hw
= &adapter
->hw
;
2536 /* disallow open during test */
2537 if (test_bit(__IXGBEVF_TESTING
, &adapter
->state
))
2540 if (hw
->adapter_stopped
) {
2541 ixgbevf_reset(adapter
);
2542 /* if adapter is still stopped then PF isn't up and
2543 * the vf can't start. */
2544 if (hw
->adapter_stopped
) {
2545 err
= IXGBE_ERR_MBX
;
2546 pr_err("Unable to start - perhaps the PF Driver isn't "
2548 goto err_setup_reset
;
2552 ixgbevf_negotiate_api(adapter
);
2554 /* setup queue reg_idx and Rx queue count */
2555 err
= ixgbevf_setup_queues(adapter
);
2557 goto err_setup_queues
;
2559 /* allocate transmit descriptors */
2560 err
= ixgbevf_setup_all_tx_resources(adapter
);
2564 /* allocate receive descriptors */
2565 err
= ixgbevf_setup_all_rx_resources(adapter
);
2569 ixgbevf_configure(adapter
);
2572 * Map the Tx/Rx rings to the vectors we were allotted.
2573 * if request_irq will be called in this function map_rings
2574 * must be called *before* up_complete
2576 ixgbevf_map_rings_to_vectors(adapter
);
2578 ixgbevf_up_complete(adapter
);
2580 /* clear any pending interrupts, may auto mask */
2581 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
2582 err
= ixgbevf_request_irq(adapter
);
2586 ixgbevf_irq_enable(adapter
);
2591 ixgbevf_down(adapter
);
2592 ixgbevf_free_irq(adapter
);
2594 ixgbevf_free_all_rx_resources(adapter
);
2596 ixgbevf_free_all_tx_resources(adapter
);
2598 ixgbevf_reset(adapter
);
2606 * ixgbevf_close - Disables a network interface
2607 * @netdev: network interface device structure
2609 * Returns 0, this is not allowed to fail
2611 * The close entry point is called when an interface is de-activated
2612 * by the OS. The hardware is still under the drivers control, but
2613 * needs to be disabled. A global MAC reset is issued to stop the
2614 * hardware, and all transmit and receive resources are freed.
2616 static int ixgbevf_close(struct net_device
*netdev
)
2618 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2620 ixgbevf_down(adapter
);
2621 ixgbevf_free_irq(adapter
);
2623 ixgbevf_free_all_tx_resources(adapter
);
2624 ixgbevf_free_all_rx_resources(adapter
);
2629 static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring
*tx_ring
,
2630 u32 vlan_macip_lens
, u32 type_tucmd
,
2633 struct ixgbe_adv_tx_context_desc
*context_desc
;
2634 u16 i
= tx_ring
->next_to_use
;
2636 context_desc
= IXGBEVF_TX_CTXTDESC(tx_ring
, i
);
2639 tx_ring
->next_to_use
= (i
< tx_ring
->count
) ? i
: 0;
2641 /* set bits to identify this as an advanced context descriptor */
2642 type_tucmd
|= IXGBE_TXD_CMD_DEXT
| IXGBE_ADVTXD_DTYP_CTXT
;
2644 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
2645 context_desc
->seqnum_seed
= 0;
2646 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd
);
2647 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2650 static int ixgbevf_tso(struct ixgbevf_ring
*tx_ring
,
2651 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2653 u32 vlan_macip_lens
, type_tucmd
;
2654 u32 mss_l4len_idx
, l4len
;
2656 if (!skb_is_gso(skb
))
2659 if (skb_header_cloned(skb
)) {
2660 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2665 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2666 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2668 if (skb
->protocol
== htons(ETH_P_IP
)) {
2669 struct iphdr
*iph
= ip_hdr(skb
);
2672 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2676 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2677 } else if (skb_is_gso_v6(skb
)) {
2678 ipv6_hdr(skb
)->payload_len
= 0;
2679 tcp_hdr(skb
)->check
=
2680 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2681 &ipv6_hdr(skb
)->daddr
,
2685 /* compute header lengths */
2686 l4len
= tcp_hdrlen(skb
);
2688 *hdr_len
= skb_transport_offset(skb
) + l4len
;
2690 /* mss_l4len_id: use 1 as index for TSO */
2691 mss_l4len_idx
= l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
;
2692 mss_l4len_idx
|= skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
;
2693 mss_l4len_idx
|= 1 << IXGBE_ADVTXD_IDX_SHIFT
;
2695 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
2696 vlan_macip_lens
= skb_network_header_len(skb
);
2697 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2698 vlan_macip_lens
|= tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2700 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2701 type_tucmd
, mss_l4len_idx
);
2706 static bool ixgbevf_tx_csum(struct ixgbevf_ring
*tx_ring
,
2707 struct sk_buff
*skb
, u32 tx_flags
)
2712 u32 vlan_macip_lens
= 0;
2713 u32 mss_l4len_idx
= 0;
2716 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2718 switch (skb
->protocol
) {
2719 case __constant_htons(ETH_P_IP
):
2720 vlan_macip_lens
|= skb_network_header_len(skb
);
2721 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2722 l4_hdr
= ip_hdr(skb
)->protocol
;
2724 case __constant_htons(ETH_P_IPV6
):
2725 vlan_macip_lens
|= skb_network_header_len(skb
);
2726 l4_hdr
= ipv6_hdr(skb
)->nexthdr
;
2729 if (unlikely(net_ratelimit())) {
2730 dev_warn(tx_ring
->dev
,
2731 "partial checksum but proto=%x!\n",
2739 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2740 mss_l4len_idx
= tcp_hdrlen(skb
) <<
2741 IXGBE_ADVTXD_L4LEN_SHIFT
;
2744 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
2745 mss_l4len_idx
= sizeof(struct sctphdr
) <<
2746 IXGBE_ADVTXD_L4LEN_SHIFT
;
2749 mss_l4len_idx
= sizeof(struct udphdr
) <<
2750 IXGBE_ADVTXD_L4LEN_SHIFT
;
2753 if (unlikely(net_ratelimit())) {
2754 dev_warn(tx_ring
->dev
,
2755 "partial checksum but l4 proto=%x!\n",
2762 /* vlan_macip_lens: MACLEN, VLAN tag */
2763 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2764 vlan_macip_lens
|= tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2766 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2767 type_tucmd
, mss_l4len_idx
);
2769 return (skb
->ip_summed
== CHECKSUM_PARTIAL
);
2772 static int ixgbevf_tx_map(struct ixgbevf_ring
*tx_ring
,
2773 struct sk_buff
*skb
, u32 tx_flags
,
2776 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2778 unsigned int total
= skb
->len
;
2779 unsigned int offset
= 0, size
;
2781 unsigned int nr_frags
= skb_shinfo(skb
)->nr_frags
;
2785 i
= tx_ring
->next_to_use
;
2787 len
= min(skb_headlen(skb
), total
);
2789 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2790 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2792 tx_buffer_info
->length
= size
;
2793 tx_buffer_info
->mapped_as_page
= false;
2794 tx_buffer_info
->dma
= dma_map_single(tx_ring
->dev
,
2796 size
, DMA_TO_DEVICE
);
2797 if (dma_mapping_error(tx_ring
->dev
, tx_buffer_info
->dma
))
2799 tx_buffer_info
->next_to_watch
= i
;
2806 if (i
== tx_ring
->count
)
2810 for (f
= 0; f
< nr_frags
; f
++) {
2811 const struct skb_frag_struct
*frag
;
2813 frag
= &skb_shinfo(skb
)->frags
[f
];
2814 len
= min((unsigned int)skb_frag_size(frag
), total
);
2818 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2819 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2821 tx_buffer_info
->length
= size
;
2822 tx_buffer_info
->dma
=
2823 skb_frag_dma_map(tx_ring
->dev
, frag
,
2824 offset
, size
, DMA_TO_DEVICE
);
2825 tx_buffer_info
->mapped_as_page
= true;
2826 if (dma_mapping_error(tx_ring
->dev
,
2827 tx_buffer_info
->dma
))
2829 tx_buffer_info
->next_to_watch
= i
;
2836 if (i
== tx_ring
->count
)
2844 i
= tx_ring
->count
- 1;
2847 tx_ring
->tx_buffer_info
[i
].skb
= skb
;
2848 tx_ring
->tx_buffer_info
[first
].next_to_watch
= i
;
2849 tx_ring
->tx_buffer_info
[first
].time_stamp
= jiffies
;
2854 dev_err(tx_ring
->dev
, "TX DMA map failed\n");
2856 /* clear timestamp and dma mappings for failed tx_buffer_info map */
2857 tx_buffer_info
->dma
= 0;
2858 tx_buffer_info
->next_to_watch
= 0;
2861 /* clear timestamp and dma mappings for remaining portion of packet */
2862 while (count
>= 0) {
2866 i
+= tx_ring
->count
;
2867 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2868 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
2874 static void ixgbevf_tx_queue(struct ixgbevf_ring
*tx_ring
, int tx_flags
,
2875 int count
, u32 paylen
, u8 hdr_len
)
2877 union ixgbe_adv_tx_desc
*tx_desc
= NULL
;
2878 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2879 u32 olinfo_status
= 0, cmd_type_len
= 0;
2882 u32 txd_cmd
= IXGBE_TXD_CMD_EOP
| IXGBE_TXD_CMD_RS
| IXGBE_TXD_CMD_IFCS
;
2884 cmd_type_len
|= IXGBE_ADVTXD_DTYP_DATA
;
2886 cmd_type_len
|= IXGBE_ADVTXD_DCMD_IFCS
| IXGBE_ADVTXD_DCMD_DEXT
;
2888 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
2889 cmd_type_len
|= IXGBE_ADVTXD_DCMD_VLE
;
2891 if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
2892 olinfo_status
|= IXGBE_ADVTXD_POPTS_TXSM
;
2894 if (tx_flags
& IXGBE_TX_FLAGS_TSO
) {
2895 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
2897 /* use index 1 context for tso */
2898 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
2899 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
2900 olinfo_status
|= IXGBE_ADVTXD_POPTS_IXSM
;
2905 * Check Context must be set if Tx switch is enabled, which it
2906 * always is for case where virtual functions are running
2908 olinfo_status
|= IXGBE_ADVTXD_CC
;
2910 olinfo_status
|= ((paylen
- hdr_len
) << IXGBE_ADVTXD_PAYLEN_SHIFT
);
2912 i
= tx_ring
->next_to_use
;
2914 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2915 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
2916 tx_desc
->read
.buffer_addr
= cpu_to_le64(tx_buffer_info
->dma
);
2917 tx_desc
->read
.cmd_type_len
=
2918 cpu_to_le32(cmd_type_len
| tx_buffer_info
->length
);
2919 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
2921 if (i
== tx_ring
->count
)
2925 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(txd_cmd
);
2927 tx_ring
->next_to_use
= i
;
2930 static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
2932 struct ixgbevf_adapter
*adapter
= netdev_priv(tx_ring
->netdev
);
2934 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
2935 /* Herbert's original patch had:
2936 * smp_mb__after_netif_stop_queue();
2937 * but since that doesn't exist yet, just open code it. */
2940 /* We need to check again in a case another CPU has just
2941 * made room available. */
2942 if (likely(IXGBE_DESC_UNUSED(tx_ring
) < size
))
2945 /* A reprieve! - use start_queue because it doesn't call schedule */
2946 netif_start_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
2947 ++adapter
->restart_queue
;
2951 static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
2953 if (likely(IXGBE_DESC_UNUSED(tx_ring
) >= size
))
2955 return __ixgbevf_maybe_stop_tx(tx_ring
, size
);
2958 static int ixgbevf_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2960 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2961 struct ixgbevf_ring
*tx_ring
;
2963 unsigned int tx_flags
= 0;
2966 u16 count
= TXD_USE_COUNT(skb_headlen(skb
));
2967 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
2971 tx_ring
= &adapter
->tx_ring
[r_idx
];
2974 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
2975 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
2976 * + 2 desc gap to keep tail from touching head,
2977 * + 1 desc for context descriptor,
2978 * otherwise try next time
2980 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
2981 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
2982 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
2984 count
+= skb_shinfo(skb
)->nr_frags
;
2986 if (ixgbevf_maybe_stop_tx(tx_ring
, count
+ 3)) {
2988 return NETDEV_TX_BUSY
;
2991 if (vlan_tx_tag_present(skb
)) {
2992 tx_flags
|= vlan_tx_tag_get(skb
);
2993 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
2994 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
2997 first
= tx_ring
->next_to_use
;
2999 if (skb
->protocol
== htons(ETH_P_IP
))
3000 tx_flags
|= IXGBE_TX_FLAGS_IPV4
;
3001 tso
= ixgbevf_tso(tx_ring
, skb
, tx_flags
, &hdr_len
);
3003 dev_kfree_skb_any(skb
);
3004 return NETDEV_TX_OK
;
3008 tx_flags
|= IXGBE_TX_FLAGS_TSO
| IXGBE_TX_FLAGS_CSUM
;
3009 else if (ixgbevf_tx_csum(tx_ring
, skb
, tx_flags
))
3010 tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
3012 ixgbevf_tx_queue(tx_ring
, tx_flags
,
3013 ixgbevf_tx_map(tx_ring
, skb
, tx_flags
, first
),
3016 * Force memory writes to complete before letting h/w
3017 * know there are new descriptors to fetch. (Only
3018 * applicable for weak-ordered memory model archs,
3023 writel(tx_ring
->next_to_use
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3025 ixgbevf_maybe_stop_tx(tx_ring
, DESC_NEEDED
);
3027 return NETDEV_TX_OK
;
3031 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3032 * @netdev: network interface device structure
3033 * @p: pointer to an address structure
3035 * Returns 0 on success, negative on failure
3037 static int ixgbevf_set_mac(struct net_device
*netdev
, void *p
)
3039 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3040 struct ixgbe_hw
*hw
= &adapter
->hw
;
3041 struct sockaddr
*addr
= p
;
3043 if (!is_valid_ether_addr(addr
->sa_data
))
3044 return -EADDRNOTAVAIL
;
3046 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3047 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3049 spin_lock(&adapter
->mbx_lock
);
3051 if (hw
->mac
.ops
.set_rar
)
3052 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
3054 spin_unlock(&adapter
->mbx_lock
);
3060 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3061 * @netdev: network interface device structure
3062 * @new_mtu: new value for maximum frame size
3064 * Returns 0 on success, negative on failure
3066 static int ixgbevf_change_mtu(struct net_device
*netdev
, int new_mtu
)
3068 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3069 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3070 int max_possible_frame
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3072 switch (adapter
->hw
.api_version
) {
3073 case ixgbe_mbox_api_11
:
3074 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3077 if (adapter
->hw
.mac
.type
== ixgbe_mac_X540_vf
)
3078 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3082 /* MTU < 68 is an error and causes problems on some kernels */
3083 if ((new_mtu
< 68) || (max_frame
> max_possible_frame
))
3086 hw_dbg(&adapter
->hw
, "changing MTU from %d to %d\n",
3087 netdev
->mtu
, new_mtu
);
3088 /* must set new MTU before calling down or up */
3089 netdev
->mtu
= new_mtu
;
3091 if (netif_running(netdev
))
3092 ixgbevf_reinit_locked(adapter
);
3097 static int ixgbevf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3099 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3100 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3105 netif_device_detach(netdev
);
3107 if (netif_running(netdev
)) {
3109 ixgbevf_down(adapter
);
3110 ixgbevf_free_irq(adapter
);
3111 ixgbevf_free_all_tx_resources(adapter
);
3112 ixgbevf_free_all_rx_resources(adapter
);
3116 ixgbevf_clear_interrupt_scheme(adapter
);
3119 retval
= pci_save_state(pdev
);
3124 pci_disable_device(pdev
);
3130 static int ixgbevf_resume(struct pci_dev
*pdev
)
3132 struct ixgbevf_adapter
*adapter
= pci_get_drvdata(pdev
);
3133 struct net_device
*netdev
= adapter
->netdev
;
3136 pci_set_power_state(pdev
, PCI_D0
);
3137 pci_restore_state(pdev
);
3139 * pci_restore_state clears dev->state_saved so call
3140 * pci_save_state to restore it.
3142 pci_save_state(pdev
);
3144 err
= pci_enable_device_mem(pdev
);
3146 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
3149 pci_set_master(pdev
);
3152 err
= ixgbevf_init_interrupt_scheme(adapter
);
3155 dev_err(&pdev
->dev
, "Cannot initialize interrupts\n");
3159 ixgbevf_reset(adapter
);
3161 if (netif_running(netdev
)) {
3162 err
= ixgbevf_open(netdev
);
3167 netif_device_attach(netdev
);
3172 #endif /* CONFIG_PM */
3173 static void ixgbevf_shutdown(struct pci_dev
*pdev
)
3175 ixgbevf_suspend(pdev
, PMSG_SUSPEND
);
3178 static struct rtnl_link_stats64
*ixgbevf_get_stats(struct net_device
*netdev
,
3179 struct rtnl_link_stats64
*stats
)
3181 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3184 const struct ixgbevf_ring
*ring
;
3187 ixgbevf_update_stats(adapter
);
3189 stats
->multicast
= adapter
->stats
.vfmprc
- adapter
->stats
.base_vfmprc
;
3191 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3192 ring
= &adapter
->rx_ring
[i
];
3194 start
= u64_stats_fetch_begin_bh(&ring
->syncp
);
3195 bytes
= ring
->total_bytes
;
3196 packets
= ring
->total_packets
;
3197 } while (u64_stats_fetch_retry_bh(&ring
->syncp
, start
));
3198 stats
->rx_bytes
+= bytes
;
3199 stats
->rx_packets
+= packets
;
3202 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3203 ring
= &adapter
->tx_ring
[i
];
3205 start
= u64_stats_fetch_begin_bh(&ring
->syncp
);
3206 bytes
= ring
->total_bytes
;
3207 packets
= ring
->total_packets
;
3208 } while (u64_stats_fetch_retry_bh(&ring
->syncp
, start
));
3209 stats
->tx_bytes
+= bytes
;
3210 stats
->tx_packets
+= packets
;
3216 static const struct net_device_ops ixgbevf_netdev_ops
= {
3217 .ndo_open
= ixgbevf_open
,
3218 .ndo_stop
= ixgbevf_close
,
3219 .ndo_start_xmit
= ixgbevf_xmit_frame
,
3220 .ndo_set_rx_mode
= ixgbevf_set_rx_mode
,
3221 .ndo_get_stats64
= ixgbevf_get_stats
,
3222 .ndo_validate_addr
= eth_validate_addr
,
3223 .ndo_set_mac_address
= ixgbevf_set_mac
,
3224 .ndo_change_mtu
= ixgbevf_change_mtu
,
3225 .ndo_tx_timeout
= ixgbevf_tx_timeout
,
3226 .ndo_vlan_rx_add_vid
= ixgbevf_vlan_rx_add_vid
,
3227 .ndo_vlan_rx_kill_vid
= ixgbevf_vlan_rx_kill_vid
,
3230 static void ixgbevf_assign_netdev_ops(struct net_device
*dev
)
3232 dev
->netdev_ops
= &ixgbevf_netdev_ops
;
3233 ixgbevf_set_ethtool_ops(dev
);
3234 dev
->watchdog_timeo
= 5 * HZ
;
3238 * ixgbevf_probe - Device Initialization Routine
3239 * @pdev: PCI device information struct
3240 * @ent: entry in ixgbevf_pci_tbl
3242 * Returns 0 on success, negative on failure
3244 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3245 * The OS initialization, configuring of the adapter private structure,
3246 * and a hardware reset occur.
3248 static int __devinit
ixgbevf_probe(struct pci_dev
*pdev
,
3249 const struct pci_device_id
*ent
)
3251 struct net_device
*netdev
;
3252 struct ixgbevf_adapter
*adapter
= NULL
;
3253 struct ixgbe_hw
*hw
= NULL
;
3254 const struct ixgbevf_info
*ii
= ixgbevf_info_tbl
[ent
->driver_data
];
3255 static int cards_found
;
3256 int err
, pci_using_dac
;
3258 err
= pci_enable_device(pdev
);
3262 if (!dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64)) &&
3263 !dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64))) {
3266 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
3268 err
= dma_set_coherent_mask(&pdev
->dev
,
3271 dev_err(&pdev
->dev
, "No usable DMA "
3272 "configuration, aborting\n");
3279 err
= pci_request_regions(pdev
, ixgbevf_driver_name
);
3281 dev_err(&pdev
->dev
, "pci_request_regions failed 0x%x\n", err
);
3285 pci_set_master(pdev
);
3287 netdev
= alloc_etherdev_mq(sizeof(struct ixgbevf_adapter
),
3291 goto err_alloc_etherdev
;
3294 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
3296 pci_set_drvdata(pdev
, netdev
);
3297 adapter
= netdev_priv(netdev
);
3299 adapter
->netdev
= netdev
;
3300 adapter
->pdev
= pdev
;
3303 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
3306 * call save state here in standalone driver because it relies on
3307 * adapter struct to exist, and needs to call netdev_priv
3309 pci_save_state(pdev
);
3311 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
3312 pci_resource_len(pdev
, 0));
3318 ixgbevf_assign_netdev_ops(netdev
);
3320 adapter
->bd_number
= cards_found
;
3323 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
3324 hw
->mac
.type
= ii
->mac
;
3326 memcpy(&hw
->mbx
.ops
, &ixgbevf_mbx_ops
,
3327 sizeof(struct ixgbe_mbx_operations
));
3329 /* setup the private structure */
3330 err
= ixgbevf_sw_init(adapter
);
3334 /* The HW MAC address was set and/or determined in sw_init */
3335 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
3337 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
3338 pr_err("invalid MAC address\n");
3343 netdev
->hw_features
= NETIF_F_SG
|
3350 netdev
->features
= netdev
->hw_features
|
3351 NETIF_F_HW_VLAN_TX
|
3352 NETIF_F_HW_VLAN_RX
|
3353 NETIF_F_HW_VLAN_FILTER
;
3355 netdev
->vlan_features
|= NETIF_F_TSO
;
3356 netdev
->vlan_features
|= NETIF_F_TSO6
;
3357 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
3358 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
3359 netdev
->vlan_features
|= NETIF_F_SG
;
3362 netdev
->features
|= NETIF_F_HIGHDMA
;
3364 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
3366 init_timer(&adapter
->watchdog_timer
);
3367 adapter
->watchdog_timer
.function
= ixgbevf_watchdog
;
3368 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
3370 INIT_WORK(&adapter
->reset_task
, ixgbevf_reset_task
);
3371 INIT_WORK(&adapter
->watchdog_task
, ixgbevf_watchdog_task
);
3373 err
= ixgbevf_init_interrupt_scheme(adapter
);
3377 /* pick up the PCI bus settings for reporting later */
3378 if (hw
->mac
.ops
.get_bus_info
)
3379 hw
->mac
.ops
.get_bus_info(hw
);
3381 strcpy(netdev
->name
, "eth%d");
3383 err
= register_netdev(netdev
);
3387 netif_carrier_off(netdev
);
3389 ixgbevf_init_last_counter_stats(adapter
);
3391 /* print the MAC address */
3392 hw_dbg(hw
, "%pM\n", netdev
->dev_addr
);
3394 hw_dbg(hw
, "MAC: %d\n", hw
->mac
.type
);
3396 hw_dbg(hw
, "Intel(R) 82599 Virtual Function\n");
3401 ixgbevf_clear_interrupt_scheme(adapter
);
3403 ixgbevf_reset_interrupt_capability(adapter
);
3404 iounmap(hw
->hw_addr
);
3406 free_netdev(netdev
);
3408 pci_release_regions(pdev
);
3411 pci_disable_device(pdev
);
3416 * ixgbevf_remove - Device Removal Routine
3417 * @pdev: PCI device information struct
3419 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3420 * that it should release a PCI device. The could be caused by a
3421 * Hot-Plug event, or because the driver is going to be removed from
3424 static void __devexit
ixgbevf_remove(struct pci_dev
*pdev
)
3426 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3427 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3429 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
3431 del_timer_sync(&adapter
->watchdog_timer
);
3433 cancel_work_sync(&adapter
->reset_task
);
3434 cancel_work_sync(&adapter
->watchdog_task
);
3436 if (netdev
->reg_state
== NETREG_REGISTERED
)
3437 unregister_netdev(netdev
);
3439 ixgbevf_clear_interrupt_scheme(adapter
);
3440 ixgbevf_reset_interrupt_capability(adapter
);
3442 iounmap(adapter
->hw
.hw_addr
);
3443 pci_release_regions(pdev
);
3445 hw_dbg(&adapter
->hw
, "Remove complete\n");
3447 kfree(adapter
->tx_ring
);
3448 kfree(adapter
->rx_ring
);
3450 free_netdev(netdev
);
3452 pci_disable_device(pdev
);
3456 * ixgbevf_io_error_detected - called when PCI error is detected
3457 * @pdev: Pointer to PCI device
3458 * @state: The current pci connection state
3460 * This function is called after a PCI bus error affecting
3461 * this device has been detected.
3463 static pci_ers_result_t
ixgbevf_io_error_detected(struct pci_dev
*pdev
,
3464 pci_channel_state_t state
)
3466 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3467 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3469 netif_device_detach(netdev
);
3471 if (state
== pci_channel_io_perm_failure
)
3472 return PCI_ERS_RESULT_DISCONNECT
;
3474 if (netif_running(netdev
))
3475 ixgbevf_down(adapter
);
3477 pci_disable_device(pdev
);
3479 /* Request a slot slot reset. */
3480 return PCI_ERS_RESULT_NEED_RESET
;
3484 * ixgbevf_io_slot_reset - called after the pci bus has been reset.
3485 * @pdev: Pointer to PCI device
3487 * Restart the card from scratch, as if from a cold-boot. Implementation
3488 * resembles the first-half of the ixgbevf_resume routine.
3490 static pci_ers_result_t
ixgbevf_io_slot_reset(struct pci_dev
*pdev
)
3492 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3493 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3495 if (pci_enable_device_mem(pdev
)) {
3497 "Cannot re-enable PCI device after reset.\n");
3498 return PCI_ERS_RESULT_DISCONNECT
;
3501 pci_set_master(pdev
);
3503 ixgbevf_reset(adapter
);
3505 return PCI_ERS_RESULT_RECOVERED
;
3509 * ixgbevf_io_resume - called when traffic can start flowing again.
3510 * @pdev: Pointer to PCI device
3512 * This callback is called when the error recovery driver tells us that
3513 * its OK to resume normal operation. Implementation resembles the
3514 * second-half of the ixgbevf_resume routine.
3516 static void ixgbevf_io_resume(struct pci_dev
*pdev
)
3518 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3519 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3521 if (netif_running(netdev
))
3522 ixgbevf_up(adapter
);
3524 netif_device_attach(netdev
);
3527 /* PCI Error Recovery (ERS) */
3528 static const struct pci_error_handlers ixgbevf_err_handler
= {
3529 .error_detected
= ixgbevf_io_error_detected
,
3530 .slot_reset
= ixgbevf_io_slot_reset
,
3531 .resume
= ixgbevf_io_resume
,
3534 static struct pci_driver ixgbevf_driver
= {
3535 .name
= ixgbevf_driver_name
,
3536 .id_table
= ixgbevf_pci_tbl
,
3537 .probe
= ixgbevf_probe
,
3538 .remove
= __devexit_p(ixgbevf_remove
),
3540 /* Power Management Hooks */
3541 .suspend
= ixgbevf_suspend
,
3542 .resume
= ixgbevf_resume
,
3544 .shutdown
= ixgbevf_shutdown
,
3545 .err_handler
= &ixgbevf_err_handler
3549 * ixgbevf_init_module - Driver Registration Routine
3551 * ixgbevf_init_module is the first routine called when the driver is
3552 * loaded. All it does is register with the PCI subsystem.
3554 static int __init
ixgbevf_init_module(void)
3557 pr_info("%s - version %s\n", ixgbevf_driver_string
,
3558 ixgbevf_driver_version
);
3560 pr_info("%s\n", ixgbevf_copyright
);
3562 ret
= pci_register_driver(&ixgbevf_driver
);
3566 module_init(ixgbevf_init_module
);
3569 * ixgbevf_exit_module - Driver Exit Cleanup Routine
3571 * ixgbevf_exit_module is called just before the driver is removed
3574 static void __exit
ixgbevf_exit_module(void)
3576 pci_unregister_driver(&ixgbevf_driver
);
3581 * ixgbevf_get_hw_dev_name - return device name string
3582 * used by hardware layer to print debugging information
3584 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw
*hw
)
3586 struct ixgbevf_adapter
*adapter
= hw
->back
;
3587 return adapter
->netdev
->name
;
3591 module_exit(ixgbevf_exit_module
);
3593 /* ixgbevf_main.c */