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 "2.12.1-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 DEFINE_PCI_DEVICE_TABLE(ixgbevf_pci_tbl
) = {
80 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_VF
), board_82599_vf
},
81 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X540_VF
), board_X540_vf
},
82 /* required last entry */
85 MODULE_DEVICE_TABLE(pci
, ixgbevf_pci_tbl
);
87 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
88 MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
89 MODULE_LICENSE("GPL");
90 MODULE_VERSION(DRV_VERSION
);
92 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
93 static int debug
= -1;
94 module_param(debug
, int, 0);
95 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
98 static void ixgbevf_queue_reset_subtask(struct ixgbevf_adapter
*adapter
);
99 static void ixgbevf_set_itr(struct ixgbevf_q_vector
*q_vector
);
100 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
);
102 static inline void ixgbevf_release_rx_desc(struct ixgbevf_ring
*rx_ring
,
105 rx_ring
->next_to_use
= val
;
108 * Force memory writes to complete before letting h/w
109 * know there are new descriptors to fetch. (Only
110 * applicable for weak-ordered memory model archs,
114 writel(val
, rx_ring
->tail
);
118 * ixgbevf_set_ivar - set IVAR registers - maps interrupt causes to vectors
119 * @adapter: pointer to adapter struct
120 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
121 * @queue: queue to map the corresponding interrupt to
122 * @msix_vector: the vector to map to the corresponding queue
124 static void ixgbevf_set_ivar(struct ixgbevf_adapter
*adapter
, s8 direction
,
125 u8 queue
, u8 msix_vector
)
128 struct ixgbe_hw
*hw
= &adapter
->hw
;
129 if (direction
== -1) {
131 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
132 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR_MISC
);
135 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR_MISC
, ivar
);
137 /* tx or rx causes */
138 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
139 index
= ((16 * (queue
& 1)) + (8 * direction
));
140 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR(queue
>> 1));
141 ivar
&= ~(0xFF << index
);
142 ivar
|= (msix_vector
<< index
);
143 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR(queue
>> 1), ivar
);
147 static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_ring
*tx_ring
,
148 struct ixgbevf_tx_buffer
151 if (tx_buffer_info
->dma
) {
152 if (tx_buffer_info
->tx_flags
& IXGBE_TX_FLAGS_MAPPED_AS_PAGE
)
153 dma_unmap_page(tx_ring
->dev
,
155 tx_buffer_info
->length
,
158 dma_unmap_single(tx_ring
->dev
,
160 tx_buffer_info
->length
,
162 tx_buffer_info
->dma
= 0;
164 if (tx_buffer_info
->skb
) {
165 dev_kfree_skb_any(tx_buffer_info
->skb
);
166 tx_buffer_info
->skb
= NULL
;
168 tx_buffer_info
->time_stamp
= 0;
169 /* tx_buffer_info must be completely set up in the transmit path */
172 #define IXGBE_MAX_TXD_PWR 14
173 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
175 /* Tx Descriptors needed, worst case */
176 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IXGBE_MAX_DATA_PER_TXD)
177 #define DESC_NEEDED (MAX_SKB_FRAGS + 4)
179 static void ixgbevf_tx_timeout(struct net_device
*netdev
);
182 * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
183 * @q_vector: board private structure
184 * @tx_ring: tx ring to clean
186 static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector
*q_vector
,
187 struct ixgbevf_ring
*tx_ring
)
189 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
190 struct ixgbevf_tx_buffer
*tx_buffer
;
191 union ixgbe_adv_tx_desc
*tx_desc
;
192 unsigned int total_bytes
= 0, total_packets
= 0;
193 unsigned int budget
= tx_ring
->count
/ 2;
194 unsigned int i
= tx_ring
->next_to_clean
;
196 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
199 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
200 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
204 union ixgbe_adv_tx_desc
*eop_desc
= tx_buffer
->next_to_watch
;
206 /* if next_to_watch is not set then there is no work pending */
210 /* prevent any other reads prior to eop_desc */
211 read_barrier_depends();
213 /* if DD is not set pending work has not been completed */
214 if (!(eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)))
217 /* clear next_to_watch to prevent false hangs */
218 tx_buffer
->next_to_watch
= NULL
;
220 /* update the statistics for this packet */
221 total_bytes
+= tx_buffer
->bytecount
;
222 total_packets
+= tx_buffer
->gso_segs
;
224 /* clear tx_buffer data */
225 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer
);
227 /* unmap remaining buffers */
228 while (tx_desc
!= eop_desc
) {
229 tx_desc
->wb
.status
= 0;
236 tx_buffer
= tx_ring
->tx_buffer_info
;
237 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, 0);
240 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer
);
243 tx_desc
->wb
.status
= 0;
245 /* move us one more past the eop_desc for start of next pkt */
251 tx_buffer
= tx_ring
->tx_buffer_info
;
252 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, 0);
255 /* issue prefetch for next Tx descriptor */
258 /* update budget accounting */
260 } while (likely(budget
));
263 tx_ring
->next_to_clean
= i
;
264 u64_stats_update_begin(&tx_ring
->syncp
);
265 tx_ring
->stats
.bytes
+= total_bytes
;
266 tx_ring
->stats
.packets
+= total_packets
;
267 u64_stats_update_end(&tx_ring
->syncp
);
268 q_vector
->tx
.total_bytes
+= total_bytes
;
269 q_vector
->tx
.total_packets
+= total_packets
;
271 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
272 if (unlikely(total_packets
&& netif_carrier_ok(tx_ring
->netdev
) &&
273 (ixgbevf_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
274 /* Make sure that anybody stopping the queue after this
275 * sees the new next_to_clean.
279 if (__netif_subqueue_stopped(tx_ring
->netdev
,
280 tx_ring
->queue_index
) &&
281 !test_bit(__IXGBEVF_DOWN
, &adapter
->state
)) {
282 netif_wake_subqueue(tx_ring
->netdev
,
283 tx_ring
->queue_index
);
284 ++tx_ring
->tx_stats
.restart_queue
;
292 * ixgbevf_receive_skb - Send a completed packet up the stack
293 * @q_vector: structure containing interrupt and ring information
294 * @skb: packet to send up
295 * @status: hardware indication of status of receive
296 * @rx_desc: rx descriptor
298 static void ixgbevf_receive_skb(struct ixgbevf_q_vector
*q_vector
,
299 struct sk_buff
*skb
, u8 status
,
300 union ixgbe_adv_rx_desc
*rx_desc
)
302 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
303 bool is_vlan
= (status
& IXGBE_RXD_STAT_VP
);
304 u16 tag
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
306 if (is_vlan
&& test_bit(tag
& VLAN_VID_MASK
, adapter
->active_vlans
))
307 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), tag
);
309 if (!(adapter
->flags
& IXGBE_FLAG_IN_NETPOLL
))
310 napi_gro_receive(&q_vector
->napi
, skb
);
316 * ixgbevf_rx_skb - Helper function to determine proper Rx method
317 * @q_vector: structure containing interrupt and ring information
318 * @skb: packet to send up
319 * @status: hardware indication of status of receive
320 * @rx_desc: rx descriptor
322 static void ixgbevf_rx_skb(struct ixgbevf_q_vector
*q_vector
,
323 struct sk_buff
*skb
, u8 status
,
324 union ixgbe_adv_rx_desc
*rx_desc
)
326 #ifdef CONFIG_NET_RX_BUSY_POLL
327 skb_mark_napi_id(skb
, &q_vector
->napi
);
329 if (ixgbevf_qv_busy_polling(q_vector
)) {
330 netif_receive_skb(skb
);
331 /* exit early if we busy polled */
334 #endif /* CONFIG_NET_RX_BUSY_POLL */
336 ixgbevf_receive_skb(q_vector
, skb
, status
, rx_desc
);
340 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
341 * @ring: pointer to Rx descriptor ring structure
342 * @status_err: hardware indication of status of receive
343 * @skb: skb currently being received and modified
345 static inline void ixgbevf_rx_checksum(struct ixgbevf_ring
*ring
,
346 u32 status_err
, struct sk_buff
*skb
)
348 skb_checksum_none_assert(skb
);
350 /* Rx csum disabled */
351 if (!(ring
->netdev
->features
& NETIF_F_RXCSUM
))
354 /* if IP and error */
355 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
356 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
357 ring
->rx_stats
.csum_err
++;
361 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
364 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
365 ring
->rx_stats
.csum_err
++;
369 /* It must be a TCP or UDP packet with a valid checksum */
370 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
374 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
375 * @rx_ring: rx descriptor ring (for a specific queue) to setup buffers on
377 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_ring
*rx_ring
,
380 union ixgbe_adv_rx_desc
*rx_desc
;
381 struct ixgbevf_rx_buffer
*bi
;
382 unsigned int i
= rx_ring
->next_to_use
;
384 while (cleaned_count
--) {
385 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
386 bi
= &rx_ring
->rx_buffer_info
[i
];
391 skb
= netdev_alloc_skb_ip_align(rx_ring
->netdev
,
392 rx_ring
->rx_buf_len
);
398 bi
->dma
= dma_map_single(rx_ring
->dev
, skb
->data
,
401 if (dma_mapping_error(rx_ring
->dev
, bi
->dma
)) {
404 dev_err(rx_ring
->dev
, "Rx DMA map failed\n");
408 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
411 if (i
== rx_ring
->count
)
416 rx_ring
->rx_stats
.alloc_rx_buff_failed
++;
417 if (rx_ring
->next_to_use
!= i
)
418 ixgbevf_release_rx_desc(rx_ring
, i
);
421 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter
*adapter
,
424 struct ixgbe_hw
*hw
= &adapter
->hw
;
426 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, qmask
);
429 static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector
*q_vector
,
430 struct ixgbevf_ring
*rx_ring
,
433 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
434 struct ixgbevf_rx_buffer
*rx_buffer_info
, *next_buffer
;
438 int cleaned_count
= 0;
439 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
441 i
= rx_ring
->next_to_clean
;
442 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
443 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
444 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
446 while (staterr
& IXGBE_RXD_STAT_DD
) {
451 rmb(); /* read descriptor and rx_buffer_info after status DD */
452 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
453 skb
= rx_buffer_info
->skb
;
454 prefetch(skb
->data
- NET_IP_ALIGN
);
455 rx_buffer_info
->skb
= NULL
;
457 if (rx_buffer_info
->dma
) {
458 dma_unmap_single(rx_ring
->dev
, rx_buffer_info
->dma
,
461 rx_buffer_info
->dma
= 0;
466 if (i
== rx_ring
->count
)
469 next_rxd
= IXGBEVF_RX_DESC(rx_ring
, i
);
473 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
475 if (!(staterr
& IXGBE_RXD_STAT_EOP
)) {
476 skb
->next
= next_buffer
->skb
;
477 IXGBE_CB(skb
->next
)->prev
= skb
;
478 rx_ring
->rx_stats
.non_eop_descs
++;
482 /* we should not be chaining buffers, if we did drop the skb */
483 if (IXGBE_CB(skb
)->prev
) {
485 struct sk_buff
*this = skb
;
486 skb
= IXGBE_CB(skb
)->prev
;
492 /* ERR_MASK will only have valid bits if EOP set */
493 if (unlikely(staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
)) {
494 dev_kfree_skb_irq(skb
);
498 ixgbevf_rx_checksum(rx_ring
, staterr
, skb
);
500 /* probably a little skewed due to removing CRC */
501 total_rx_bytes
+= skb
->len
;
504 skb
->protocol
= eth_type_trans(skb
, rx_ring
->netdev
);
506 /* Workaround hardware that can't do proper VEPA multicast
509 if ((skb
->pkt_type
& (PACKET_BROADCAST
| PACKET_MULTICAST
)) &&
510 ether_addr_equal(rx_ring
->netdev
->dev_addr
,
511 eth_hdr(skb
)->h_source
)) {
512 dev_kfree_skb_irq(skb
);
516 ixgbevf_rx_skb(q_vector
, skb
, staterr
, rx_desc
);
519 rx_desc
->wb
.upper
.status_error
= 0;
521 /* return some buffers to hardware, one at a time is too slow */
522 if (cleaned_count
>= IXGBEVF_RX_BUFFER_WRITE
) {
523 ixgbevf_alloc_rx_buffers(rx_ring
, cleaned_count
);
527 /* use prefetched values */
529 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
531 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
534 rx_ring
->next_to_clean
= i
;
535 cleaned_count
= ixgbevf_desc_unused(rx_ring
);
538 ixgbevf_alloc_rx_buffers(rx_ring
, cleaned_count
);
540 u64_stats_update_begin(&rx_ring
->syncp
);
541 rx_ring
->stats
.packets
+= total_rx_packets
;
542 rx_ring
->stats
.bytes
+= total_rx_bytes
;
543 u64_stats_update_end(&rx_ring
->syncp
);
544 q_vector
->rx
.total_packets
+= total_rx_packets
;
545 q_vector
->rx
.total_bytes
+= total_rx_bytes
;
547 return total_rx_packets
;
551 * ixgbevf_poll - NAPI polling calback
552 * @napi: napi struct with our devices info in it
553 * @budget: amount of work driver is allowed to do this pass, in packets
555 * This function will clean more than one or more rings associated with a
558 static int ixgbevf_poll(struct napi_struct
*napi
, int budget
)
560 struct ixgbevf_q_vector
*q_vector
=
561 container_of(napi
, struct ixgbevf_q_vector
, napi
);
562 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
563 struct ixgbevf_ring
*ring
;
565 bool clean_complete
= true;
567 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
568 clean_complete
&= ixgbevf_clean_tx_irq(q_vector
, ring
);
570 #ifdef CONFIG_NET_RX_BUSY_POLL
571 if (!ixgbevf_qv_lock_napi(q_vector
))
575 /* attempt to distribute budget to each queue fairly, but don't allow
576 * the budget to go below 1 because we'll exit polling */
577 if (q_vector
->rx
.count
> 1)
578 per_ring_budget
= max(budget
/q_vector
->rx
.count
, 1);
580 per_ring_budget
= budget
;
582 adapter
->flags
|= IXGBE_FLAG_IN_NETPOLL
;
583 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
584 clean_complete
&= (ixgbevf_clean_rx_irq(q_vector
, ring
,
587 adapter
->flags
&= ~IXGBE_FLAG_IN_NETPOLL
;
589 #ifdef CONFIG_NET_RX_BUSY_POLL
590 ixgbevf_qv_unlock_napi(q_vector
);
593 /* If all work not completed, return budget and keep polling */
596 /* all work done, exit the polling mode */
598 if (adapter
->rx_itr_setting
& 1)
599 ixgbevf_set_itr(q_vector
);
600 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
601 ixgbevf_irq_enable_queues(adapter
,
602 1 << q_vector
->v_idx
);
608 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
609 * @q_vector: structure containing interrupt and ring information
611 void ixgbevf_write_eitr(struct ixgbevf_q_vector
*q_vector
)
613 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
614 struct ixgbe_hw
*hw
= &adapter
->hw
;
615 int v_idx
= q_vector
->v_idx
;
616 u32 itr_reg
= q_vector
->itr
& IXGBE_MAX_EITR
;
619 * set the WDIS bit to not clear the timer bits and cause an
620 * immediate assertion of the interrupt
622 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
624 IXGBE_WRITE_REG(hw
, IXGBE_VTEITR(v_idx
), itr_reg
);
627 #ifdef CONFIG_NET_RX_BUSY_POLL
628 /* must be called with local_bh_disable()d */
629 static int ixgbevf_busy_poll_recv(struct napi_struct
*napi
)
631 struct ixgbevf_q_vector
*q_vector
=
632 container_of(napi
, struct ixgbevf_q_vector
, napi
);
633 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
634 struct ixgbevf_ring
*ring
;
637 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
638 return LL_FLUSH_FAILED
;
640 if (!ixgbevf_qv_lock_poll(q_vector
))
641 return LL_FLUSH_BUSY
;
643 ixgbevf_for_each_ring(ring
, q_vector
->rx
) {
644 found
= ixgbevf_clean_rx_irq(q_vector
, ring
, 4);
645 #ifdef BP_EXTENDED_STATS
647 ring
->stats
.cleaned
+= found
;
649 ring
->stats
.misses
++;
655 ixgbevf_qv_unlock_poll(q_vector
);
659 #endif /* CONFIG_NET_RX_BUSY_POLL */
662 * ixgbevf_configure_msix - Configure MSI-X hardware
663 * @adapter: board private structure
665 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
668 static void ixgbevf_configure_msix(struct ixgbevf_adapter
*adapter
)
670 struct ixgbevf_q_vector
*q_vector
;
671 int q_vectors
, v_idx
;
673 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
674 adapter
->eims_enable_mask
= 0;
677 * Populate the IVAR table and set the ITR values to the
678 * corresponding register.
680 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
681 struct ixgbevf_ring
*ring
;
682 q_vector
= adapter
->q_vector
[v_idx
];
684 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
685 ixgbevf_set_ivar(adapter
, 0, ring
->reg_idx
, v_idx
);
687 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
688 ixgbevf_set_ivar(adapter
, 1, ring
->reg_idx
, v_idx
);
690 if (q_vector
->tx
.ring
&& !q_vector
->rx
.ring
) {
692 if (adapter
->tx_itr_setting
== 1)
693 q_vector
->itr
= IXGBE_10K_ITR
;
695 q_vector
->itr
= adapter
->tx_itr_setting
;
697 /* rx or rx/tx vector */
698 if (adapter
->rx_itr_setting
== 1)
699 q_vector
->itr
= IXGBE_20K_ITR
;
701 q_vector
->itr
= adapter
->rx_itr_setting
;
704 /* add q_vector eims value to global eims_enable_mask */
705 adapter
->eims_enable_mask
|= 1 << v_idx
;
707 ixgbevf_write_eitr(q_vector
);
710 ixgbevf_set_ivar(adapter
, -1, 1, v_idx
);
711 /* setup eims_other and add value to global eims_enable_mask */
712 adapter
->eims_other
= 1 << v_idx
;
713 adapter
->eims_enable_mask
|= adapter
->eims_other
;
720 latency_invalid
= 255
724 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
725 * @q_vector: structure containing interrupt and ring information
726 * @ring_container: structure containing ring performance data
728 * Stores a new ITR value based on packets and byte
729 * counts during the last interrupt. The advantage of per interrupt
730 * computation is faster updates and more accurate ITR for the current
731 * traffic pattern. Constants in this function were computed
732 * based on theoretical maximum wire speed and thresholds were set based
733 * on testing data as well as attempting to minimize response time
734 * while increasing bulk throughput.
736 static void ixgbevf_update_itr(struct ixgbevf_q_vector
*q_vector
,
737 struct ixgbevf_ring_container
*ring_container
)
739 int bytes
= ring_container
->total_bytes
;
740 int packets
= ring_container
->total_packets
;
743 u8 itr_setting
= ring_container
->itr
;
748 /* simple throttlerate management
749 * 0-20MB/s lowest (100000 ints/s)
750 * 20-100MB/s low (20000 ints/s)
751 * 100-1249MB/s bulk (8000 ints/s)
753 /* what was last interrupt timeslice? */
754 timepassed_us
= q_vector
->itr
>> 2;
755 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
757 switch (itr_setting
) {
759 if (bytes_perint
> 10)
760 itr_setting
= low_latency
;
763 if (bytes_perint
> 20)
764 itr_setting
= bulk_latency
;
765 else if (bytes_perint
<= 10)
766 itr_setting
= lowest_latency
;
769 if (bytes_perint
<= 20)
770 itr_setting
= low_latency
;
774 /* clear work counters since we have the values we need */
775 ring_container
->total_bytes
= 0;
776 ring_container
->total_packets
= 0;
778 /* write updated itr to ring container */
779 ring_container
->itr
= itr_setting
;
782 static void ixgbevf_set_itr(struct ixgbevf_q_vector
*q_vector
)
784 u32 new_itr
= q_vector
->itr
;
787 ixgbevf_update_itr(q_vector
, &q_vector
->tx
);
788 ixgbevf_update_itr(q_vector
, &q_vector
->rx
);
790 current_itr
= max(q_vector
->rx
.itr
, q_vector
->tx
.itr
);
792 switch (current_itr
) {
793 /* counts and packets in update_itr are dependent on these numbers */
795 new_itr
= IXGBE_100K_ITR
;
798 new_itr
= IXGBE_20K_ITR
;
802 new_itr
= IXGBE_8K_ITR
;
806 if (new_itr
!= q_vector
->itr
) {
807 /* do an exponential smoothing */
808 new_itr
= (10 * new_itr
* q_vector
->itr
) /
809 ((9 * new_itr
) + q_vector
->itr
);
811 /* save the algorithm value here */
812 q_vector
->itr
= new_itr
;
814 ixgbevf_write_eitr(q_vector
);
818 static irqreturn_t
ixgbevf_msix_other(int irq
, void *data
)
820 struct ixgbevf_adapter
*adapter
= data
;
821 struct ixgbe_hw
*hw
= &adapter
->hw
;
823 hw
->mac
.get_link_status
= 1;
825 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
826 mod_timer(&adapter
->watchdog_timer
, jiffies
);
828 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_other
);
834 * ixgbevf_msix_clean_rings - single unshared vector rx clean (all queues)
836 * @data: pointer to our q_vector struct for this interrupt vector
838 static irqreturn_t
ixgbevf_msix_clean_rings(int irq
, void *data
)
840 struct ixgbevf_q_vector
*q_vector
= data
;
842 /* EIAM disabled interrupts (on this vector) for us */
843 if (q_vector
->rx
.ring
|| q_vector
->tx
.ring
)
844 napi_schedule(&q_vector
->napi
);
849 static inline void map_vector_to_rxq(struct ixgbevf_adapter
*a
, int v_idx
,
852 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
854 a
->rx_ring
[r_idx
]->next
= q_vector
->rx
.ring
;
855 q_vector
->rx
.ring
= a
->rx_ring
[r_idx
];
856 q_vector
->rx
.count
++;
859 static inline void map_vector_to_txq(struct ixgbevf_adapter
*a
, int v_idx
,
862 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
864 a
->tx_ring
[t_idx
]->next
= q_vector
->tx
.ring
;
865 q_vector
->tx
.ring
= a
->tx_ring
[t_idx
];
866 q_vector
->tx
.count
++;
870 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
871 * @adapter: board private structure to initialize
873 * This function maps descriptor rings to the queue-specific vectors
874 * we were allotted through the MSI-X enabling code. Ideally, we'd have
875 * one vector per ring/queue, but on a constrained vector budget, we
876 * group the rings as "efficiently" as possible. You would add new
877 * mapping configurations in here.
879 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter
*adapter
)
883 int rxr_idx
= 0, txr_idx
= 0;
884 int rxr_remaining
= adapter
->num_rx_queues
;
885 int txr_remaining
= adapter
->num_tx_queues
;
890 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
893 * The ideal configuration...
894 * We have enough vectors to map one per queue.
896 if (q_vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
897 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
898 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
900 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
901 map_vector_to_txq(adapter
, v_start
, txr_idx
);
906 * If we don't have enough vectors for a 1-to-1
907 * mapping, we'll have to group them so there are
908 * multiple queues per vector.
910 /* Re-adjusting *qpv takes care of the remainder. */
911 for (i
= v_start
; i
< q_vectors
; i
++) {
912 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
913 for (j
= 0; j
< rqpv
; j
++) {
914 map_vector_to_rxq(adapter
, i
, rxr_idx
);
919 for (i
= v_start
; i
< q_vectors
; i
++) {
920 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
921 for (j
= 0; j
< tqpv
; j
++) {
922 map_vector_to_txq(adapter
, i
, txr_idx
);
933 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
934 * @adapter: board private structure
936 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
937 * interrupts from the kernel.
939 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter
*adapter
)
941 struct net_device
*netdev
= adapter
->netdev
;
942 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
946 for (vector
= 0; vector
< q_vectors
; vector
++) {
947 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[vector
];
948 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
950 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
951 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
952 "%s-%s-%d", netdev
->name
, "TxRx", ri
++);
954 } else if (q_vector
->rx
.ring
) {
955 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
956 "%s-%s-%d", netdev
->name
, "rx", ri
++);
957 } else if (q_vector
->tx
.ring
) {
958 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
959 "%s-%s-%d", netdev
->name
, "tx", ti
++);
961 /* skip this unused q_vector */
964 err
= request_irq(entry
->vector
, &ixgbevf_msix_clean_rings
, 0,
965 q_vector
->name
, q_vector
);
968 "request_irq failed for MSIX interrupt "
970 goto free_queue_irqs
;
974 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
975 &ixgbevf_msix_other
, 0, netdev
->name
, adapter
);
978 "request_irq for msix_other failed: %d\n", err
);
979 goto free_queue_irqs
;
987 free_irq(adapter
->msix_entries
[vector
].vector
,
988 adapter
->q_vector
[vector
]);
990 /* This failure is non-recoverable - it indicates the system is
991 * out of MSIX vector resources and the VF driver cannot run
992 * without them. Set the number of msix vectors to zero
993 * indicating that not enough can be allocated. The error
994 * will be returned to the user indicating device open failed.
995 * Any further attempts to force the driver to open will also
996 * fail. The only way to recover is to unload the driver and
997 * reload it again. If the system has recovered some MSIX
998 * vectors then it may succeed.
1000 adapter
->num_msix_vectors
= 0;
1004 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter
*adapter
)
1006 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1008 for (i
= 0; i
< q_vectors
; i
++) {
1009 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[i
];
1010 q_vector
->rx
.ring
= NULL
;
1011 q_vector
->tx
.ring
= NULL
;
1012 q_vector
->rx
.count
= 0;
1013 q_vector
->tx
.count
= 0;
1018 * ixgbevf_request_irq - initialize interrupts
1019 * @adapter: board private structure
1021 * Attempts to configure interrupts using the best available
1022 * capabilities of the hardware and kernel.
1024 static int ixgbevf_request_irq(struct ixgbevf_adapter
*adapter
)
1028 err
= ixgbevf_request_msix_irqs(adapter
);
1031 hw_dbg(&adapter
->hw
,
1032 "request_irq failed, Error %d\n", err
);
1037 static void ixgbevf_free_irq(struct ixgbevf_adapter
*adapter
)
1041 q_vectors
= adapter
->num_msix_vectors
;
1044 free_irq(adapter
->msix_entries
[i
].vector
, adapter
);
1047 for (; i
>= 0; i
--) {
1048 /* free only the irqs that were actually requested */
1049 if (!adapter
->q_vector
[i
]->rx
.ring
&&
1050 !adapter
->q_vector
[i
]->tx
.ring
)
1053 free_irq(adapter
->msix_entries
[i
].vector
,
1054 adapter
->q_vector
[i
]);
1057 ixgbevf_reset_q_vectors(adapter
);
1061 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
1062 * @adapter: board private structure
1064 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter
*adapter
)
1066 struct ixgbe_hw
*hw
= &adapter
->hw
;
1069 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, 0);
1070 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMC
, ~0);
1071 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, 0);
1073 IXGBE_WRITE_FLUSH(hw
);
1075 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
1076 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1080 * ixgbevf_irq_enable - Enable default interrupt generation settings
1081 * @adapter: board private structure
1083 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter
*adapter
)
1085 struct ixgbe_hw
*hw
= &adapter
->hw
;
1087 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, adapter
->eims_enable_mask
);
1088 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, adapter
->eims_enable_mask
);
1089 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_enable_mask
);
1093 * ixgbevf_configure_tx_ring - Configure 82599 VF Tx ring after Reset
1094 * @adapter: board private structure
1095 * @ring: structure containing ring specific data
1097 * Configure the Tx descriptor ring after a reset.
1099 static void ixgbevf_configure_tx_ring(struct ixgbevf_adapter
*adapter
,
1100 struct ixgbevf_ring
*ring
)
1102 struct ixgbe_hw
*hw
= &adapter
->hw
;
1103 u64 tdba
= ring
->dma
;
1105 u32 txdctl
= IXGBE_TXDCTL_ENABLE
;
1106 u8 reg_idx
= ring
->reg_idx
;
1108 /* disable queue to avoid issues while updating state */
1109 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(reg_idx
), IXGBE_TXDCTL_SWFLSH
);
1110 IXGBE_WRITE_FLUSH(hw
);
1112 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAL(reg_idx
), tdba
& DMA_BIT_MASK(32));
1113 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAH(reg_idx
), tdba
>> 32);
1114 IXGBE_WRITE_REG(hw
, IXGBE_VFTDLEN(reg_idx
),
1115 ring
->count
* sizeof(union ixgbe_adv_tx_desc
));
1117 /* disable head writeback */
1118 IXGBE_WRITE_REG(hw
, IXGBE_VFTDWBAH(reg_idx
), 0);
1119 IXGBE_WRITE_REG(hw
, IXGBE_VFTDWBAL(reg_idx
), 0);
1121 /* enable relaxed ordering */
1122 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_TXCTRL(reg_idx
),
1123 (IXGBE_DCA_TXCTRL_DESC_RRO_EN
|
1124 IXGBE_DCA_TXCTRL_DATA_RRO_EN
));
1126 /* reset head and tail pointers */
1127 IXGBE_WRITE_REG(hw
, IXGBE_VFTDH(reg_idx
), 0);
1128 IXGBE_WRITE_REG(hw
, IXGBE_VFTDT(reg_idx
), 0);
1129 ring
->tail
= hw
->hw_addr
+ IXGBE_VFTDT(reg_idx
);
1131 /* reset ntu and ntc to place SW in sync with hardwdare */
1132 ring
->next_to_clean
= 0;
1133 ring
->next_to_use
= 0;
1135 /* In order to avoid issues WTHRESH + PTHRESH should always be equal
1136 * to or less than the number of on chip descriptors, which is
1139 txdctl
|= (8 << 16); /* WTHRESH = 8 */
1141 /* Setting PTHRESH to 32 both improves performance */
1142 txdctl
|= (1 << 8) | /* HTHRESH = 1 */
1143 32; /* PTHRESH = 32 */
1145 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(reg_idx
), txdctl
);
1147 /* poll to verify queue is enabled */
1149 usleep_range(1000, 2000);
1150 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(reg_idx
));
1151 } while (--wait_loop
&& !(txdctl
& IXGBE_TXDCTL_ENABLE
));
1153 pr_err("Could not enable Tx Queue %d\n", reg_idx
);
1157 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1158 * @adapter: board private structure
1160 * Configure the Tx unit of the MAC after a reset.
1162 static void ixgbevf_configure_tx(struct ixgbevf_adapter
*adapter
)
1166 /* Setup the HW Tx Head and Tail descriptor pointers */
1167 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1168 ixgbevf_configure_tx_ring(adapter
, adapter
->tx_ring
[i
]);
1171 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1173 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter
*adapter
, int index
)
1175 struct ixgbevf_ring
*rx_ring
;
1176 struct ixgbe_hw
*hw
= &adapter
->hw
;
1179 rx_ring
= adapter
->rx_ring
[index
];
1181 srrctl
= IXGBE_SRRCTL_DROP_EN
;
1183 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1185 srrctl
|= ALIGN(rx_ring
->rx_buf_len
, 1024) >>
1186 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1188 IXGBE_WRITE_REG(hw
, IXGBE_VFSRRCTL(index
), srrctl
);
1191 static void ixgbevf_setup_psrtype(struct ixgbevf_adapter
*adapter
)
1193 struct ixgbe_hw
*hw
= &adapter
->hw
;
1195 /* PSRTYPE must be initialized in 82599 */
1196 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
| IXGBE_PSRTYPE_UDPHDR
|
1197 IXGBE_PSRTYPE_IPV4HDR
| IXGBE_PSRTYPE_IPV6HDR
|
1198 IXGBE_PSRTYPE_L2HDR
;
1200 if (adapter
->num_rx_queues
> 1)
1203 IXGBE_WRITE_REG(hw
, IXGBE_VFPSRTYPE
, psrtype
);
1206 static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter
*adapter
)
1208 struct ixgbe_hw
*hw
= &adapter
->hw
;
1209 struct net_device
*netdev
= adapter
->netdev
;
1210 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1214 /* notify the PF of our intent to use this size of frame */
1215 ixgbevf_rlpml_set_vf(hw
, max_frame
);
1217 /* PF will allow an extra 4 bytes past for vlan tagged frames */
1218 max_frame
+= VLAN_HLEN
;
1221 * Allocate buffer sizes that fit well into 32K and
1222 * take into account max frame size of 9.5K
1224 if ((hw
->mac
.type
== ixgbe_mac_X540_vf
) &&
1225 (max_frame
<= MAXIMUM_ETHERNET_VLAN_SIZE
))
1226 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1227 else if (max_frame
<= IXGBEVF_RXBUFFER_2K
)
1228 rx_buf_len
= IXGBEVF_RXBUFFER_2K
;
1229 else if (max_frame
<= IXGBEVF_RXBUFFER_4K
)
1230 rx_buf_len
= IXGBEVF_RXBUFFER_4K
;
1231 else if (max_frame
<= IXGBEVF_RXBUFFER_8K
)
1232 rx_buf_len
= IXGBEVF_RXBUFFER_8K
;
1234 rx_buf_len
= IXGBEVF_RXBUFFER_10K
;
1236 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1237 adapter
->rx_ring
[i
]->rx_buf_len
= rx_buf_len
;
1240 #define IXGBEVF_MAX_RX_DESC_POLL 10
1241 static void ixgbevf_disable_rx_queue(struct ixgbevf_adapter
*adapter
,
1242 struct ixgbevf_ring
*ring
)
1244 struct ixgbe_hw
*hw
= &adapter
->hw
;
1245 int wait_loop
= IXGBEVF_MAX_RX_DESC_POLL
;
1247 u8 reg_idx
= ring
->reg_idx
;
1249 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1250 rxdctl
&= ~IXGBE_RXDCTL_ENABLE
;
1252 /* write value back with RXDCTL.ENABLE bit cleared */
1253 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(reg_idx
), rxdctl
);
1255 /* the hardware may take up to 100us to really disable the rx queue */
1258 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1259 } while (--wait_loop
&& (rxdctl
& IXGBE_RXDCTL_ENABLE
));
1262 pr_err("RXDCTL.ENABLE queue %d not cleared while polling\n",
1266 static void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter
*adapter
,
1267 struct ixgbevf_ring
*ring
)
1269 struct ixgbe_hw
*hw
= &adapter
->hw
;
1270 int wait_loop
= IXGBEVF_MAX_RX_DESC_POLL
;
1272 u8 reg_idx
= ring
->reg_idx
;
1275 usleep_range(1000, 2000);
1276 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1277 } while (--wait_loop
&& !(rxdctl
& IXGBE_RXDCTL_ENABLE
));
1280 pr_err("RXDCTL.ENABLE queue %d not set while polling\n",
1284 static void ixgbevf_configure_rx_ring(struct ixgbevf_adapter
*adapter
,
1285 struct ixgbevf_ring
*ring
)
1287 struct ixgbe_hw
*hw
= &adapter
->hw
;
1288 u64 rdba
= ring
->dma
;
1290 u8 reg_idx
= ring
->reg_idx
;
1292 /* disable queue to avoid issues while updating state */
1293 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1294 ixgbevf_disable_rx_queue(adapter
, ring
);
1296 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAL(reg_idx
), rdba
& DMA_BIT_MASK(32));
1297 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAH(reg_idx
), rdba
>> 32);
1298 IXGBE_WRITE_REG(hw
, IXGBE_VFRDLEN(reg_idx
),
1299 ring
->count
* sizeof(union ixgbe_adv_rx_desc
));
1301 /* enable relaxed ordering */
1302 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_RXCTRL(reg_idx
),
1303 IXGBE_DCA_RXCTRL_DESC_RRO_EN
);
1305 /* reset head and tail pointers */
1306 IXGBE_WRITE_REG(hw
, IXGBE_VFRDH(reg_idx
), 0);
1307 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(reg_idx
), 0);
1308 ring
->tail
= hw
->hw_addr
+ IXGBE_VFRDT(reg_idx
);
1310 /* reset ntu and ntc to place SW in sync with hardwdare */
1311 ring
->next_to_clean
= 0;
1312 ring
->next_to_use
= 0;
1314 ixgbevf_configure_srrctl(adapter
, reg_idx
);
1316 /* prevent DMA from exceeding buffer space available */
1317 rxdctl
&= ~IXGBE_RXDCTL_RLPMLMASK
;
1318 rxdctl
|= ring
->rx_buf_len
| IXGBE_RXDCTL_RLPML_EN
;
1319 rxdctl
|= IXGBE_RXDCTL_ENABLE
| IXGBE_RXDCTL_VME
;
1320 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(reg_idx
), rxdctl
);
1322 ixgbevf_rx_desc_queue_enable(adapter
, ring
);
1323 ixgbevf_alloc_rx_buffers(ring
, ixgbevf_desc_unused(ring
));
1327 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1328 * @adapter: board private structure
1330 * Configure the Rx unit of the MAC after a reset.
1332 static void ixgbevf_configure_rx(struct ixgbevf_adapter
*adapter
)
1336 ixgbevf_setup_psrtype(adapter
);
1338 /* set_rx_buffer_len must be called before ring initialization */
1339 ixgbevf_set_rx_buffer_len(adapter
);
1341 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1342 * the Base and Length of the Rx Descriptor Ring */
1343 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1344 ixgbevf_configure_rx_ring(adapter
, adapter
->rx_ring
[i
]);
1347 static int ixgbevf_vlan_rx_add_vid(struct net_device
*netdev
,
1348 __be16 proto
, u16 vid
)
1350 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1351 struct ixgbe_hw
*hw
= &adapter
->hw
;
1354 spin_lock_bh(&adapter
->mbx_lock
);
1356 /* add VID to filter table */
1357 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, true);
1359 spin_unlock_bh(&adapter
->mbx_lock
);
1361 /* translate error return types so error makes sense */
1362 if (err
== IXGBE_ERR_MBX
)
1365 if (err
== IXGBE_ERR_INVALID_ARGUMENT
)
1368 set_bit(vid
, adapter
->active_vlans
);
1373 static int ixgbevf_vlan_rx_kill_vid(struct net_device
*netdev
,
1374 __be16 proto
, u16 vid
)
1376 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1377 struct ixgbe_hw
*hw
= &adapter
->hw
;
1378 int err
= -EOPNOTSUPP
;
1380 spin_lock_bh(&adapter
->mbx_lock
);
1382 /* remove VID from filter table */
1383 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, false);
1385 spin_unlock_bh(&adapter
->mbx_lock
);
1387 clear_bit(vid
, adapter
->active_vlans
);
1392 static void ixgbevf_restore_vlan(struct ixgbevf_adapter
*adapter
)
1396 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
1397 ixgbevf_vlan_rx_add_vid(adapter
->netdev
,
1398 htons(ETH_P_8021Q
), vid
);
1401 static int ixgbevf_write_uc_addr_list(struct net_device
*netdev
)
1403 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1404 struct ixgbe_hw
*hw
= &adapter
->hw
;
1407 if ((netdev_uc_count(netdev
)) > 10) {
1408 pr_err("Too many unicast filters - No Space\n");
1412 if (!netdev_uc_empty(netdev
)) {
1413 struct netdev_hw_addr
*ha
;
1414 netdev_for_each_uc_addr(ha
, netdev
) {
1415 hw
->mac
.ops
.set_uc_addr(hw
, ++count
, ha
->addr
);
1420 * If the list is empty then send message to PF driver to
1421 * clear all macvlans on this VF.
1423 hw
->mac
.ops
.set_uc_addr(hw
, 0, NULL
);
1430 * ixgbevf_set_rx_mode - Multicast and unicast set
1431 * @netdev: network interface device structure
1433 * The set_rx_method entry point is called whenever the multicast address
1434 * list, unicast address list or the network interface flags are updated.
1435 * This routine is responsible for configuring the hardware for proper
1436 * multicast mode and configuring requested unicast filters.
1438 static void ixgbevf_set_rx_mode(struct net_device
*netdev
)
1440 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1441 struct ixgbe_hw
*hw
= &adapter
->hw
;
1443 spin_lock_bh(&adapter
->mbx_lock
);
1445 /* reprogram multicast list */
1446 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
1448 ixgbevf_write_uc_addr_list(netdev
);
1450 spin_unlock_bh(&adapter
->mbx_lock
);
1453 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter
*adapter
)
1456 struct ixgbevf_q_vector
*q_vector
;
1457 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1459 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1460 q_vector
= adapter
->q_vector
[q_idx
];
1461 #ifdef CONFIG_NET_RX_BUSY_POLL
1462 ixgbevf_qv_init_lock(adapter
->q_vector
[q_idx
]);
1464 napi_enable(&q_vector
->napi
);
1468 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter
*adapter
)
1471 struct ixgbevf_q_vector
*q_vector
;
1472 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1474 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1475 q_vector
= adapter
->q_vector
[q_idx
];
1476 napi_disable(&q_vector
->napi
);
1477 #ifdef CONFIG_NET_RX_BUSY_POLL
1478 while (!ixgbevf_qv_disable(adapter
->q_vector
[q_idx
])) {
1479 pr_info("QV %d locked\n", q_idx
);
1480 usleep_range(1000, 20000);
1482 #endif /* CONFIG_NET_RX_BUSY_POLL */
1486 static int ixgbevf_configure_dcb(struct ixgbevf_adapter
*adapter
)
1488 struct ixgbe_hw
*hw
= &adapter
->hw
;
1489 unsigned int def_q
= 0;
1490 unsigned int num_tcs
= 0;
1491 unsigned int num_rx_queues
= 1;
1494 spin_lock_bh(&adapter
->mbx_lock
);
1496 /* fetch queue configuration from the PF */
1497 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
1499 spin_unlock_bh(&adapter
->mbx_lock
);
1505 /* update default Tx ring register index */
1506 adapter
->tx_ring
[0]->reg_idx
= def_q
;
1508 /* we need as many queues as traffic classes */
1509 num_rx_queues
= num_tcs
;
1512 /* if we have a bad config abort request queue reset */
1513 if (adapter
->num_rx_queues
!= num_rx_queues
) {
1514 /* force mailbox timeout to prevent further messages */
1515 hw
->mbx
.timeout
= 0;
1517 /* wait for watchdog to come around and bail us out */
1518 adapter
->flags
|= IXGBEVF_FLAG_QUEUE_RESET_REQUESTED
;
1524 static void ixgbevf_configure(struct ixgbevf_adapter
*adapter
)
1526 ixgbevf_configure_dcb(adapter
);
1528 ixgbevf_set_rx_mode(adapter
->netdev
);
1530 ixgbevf_restore_vlan(adapter
);
1532 ixgbevf_configure_tx(adapter
);
1533 ixgbevf_configure_rx(adapter
);
1536 static void ixgbevf_save_reset_stats(struct ixgbevf_adapter
*adapter
)
1538 /* Only save pre-reset stats if there are some */
1539 if (adapter
->stats
.vfgprc
|| adapter
->stats
.vfgptc
) {
1540 adapter
->stats
.saved_reset_vfgprc
+= adapter
->stats
.vfgprc
-
1541 adapter
->stats
.base_vfgprc
;
1542 adapter
->stats
.saved_reset_vfgptc
+= adapter
->stats
.vfgptc
-
1543 adapter
->stats
.base_vfgptc
;
1544 adapter
->stats
.saved_reset_vfgorc
+= adapter
->stats
.vfgorc
-
1545 adapter
->stats
.base_vfgorc
;
1546 adapter
->stats
.saved_reset_vfgotc
+= adapter
->stats
.vfgotc
-
1547 adapter
->stats
.base_vfgotc
;
1548 adapter
->stats
.saved_reset_vfmprc
+= adapter
->stats
.vfmprc
-
1549 adapter
->stats
.base_vfmprc
;
1553 static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter
*adapter
)
1555 struct ixgbe_hw
*hw
= &adapter
->hw
;
1557 adapter
->stats
.last_vfgprc
= IXGBE_READ_REG(hw
, IXGBE_VFGPRC
);
1558 adapter
->stats
.last_vfgorc
= IXGBE_READ_REG(hw
, IXGBE_VFGORC_LSB
);
1559 adapter
->stats
.last_vfgorc
|=
1560 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGORC_MSB
))) << 32);
1561 adapter
->stats
.last_vfgptc
= IXGBE_READ_REG(hw
, IXGBE_VFGPTC
);
1562 adapter
->stats
.last_vfgotc
= IXGBE_READ_REG(hw
, IXGBE_VFGOTC_LSB
);
1563 adapter
->stats
.last_vfgotc
|=
1564 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGOTC_MSB
))) << 32);
1565 adapter
->stats
.last_vfmprc
= IXGBE_READ_REG(hw
, IXGBE_VFMPRC
);
1567 adapter
->stats
.base_vfgprc
= adapter
->stats
.last_vfgprc
;
1568 adapter
->stats
.base_vfgorc
= adapter
->stats
.last_vfgorc
;
1569 adapter
->stats
.base_vfgptc
= adapter
->stats
.last_vfgptc
;
1570 adapter
->stats
.base_vfgotc
= adapter
->stats
.last_vfgotc
;
1571 adapter
->stats
.base_vfmprc
= adapter
->stats
.last_vfmprc
;
1574 static void ixgbevf_negotiate_api(struct ixgbevf_adapter
*adapter
)
1576 struct ixgbe_hw
*hw
= &adapter
->hw
;
1577 int api
[] = { ixgbe_mbox_api_11
,
1579 ixgbe_mbox_api_unknown
};
1580 int err
= 0, idx
= 0;
1582 spin_lock_bh(&adapter
->mbx_lock
);
1584 while (api
[idx
] != ixgbe_mbox_api_unknown
) {
1585 err
= ixgbevf_negotiate_api_version(hw
, api
[idx
]);
1591 spin_unlock_bh(&adapter
->mbx_lock
);
1594 static void ixgbevf_up_complete(struct ixgbevf_adapter
*adapter
)
1596 struct net_device
*netdev
= adapter
->netdev
;
1597 struct ixgbe_hw
*hw
= &adapter
->hw
;
1599 ixgbevf_configure_msix(adapter
);
1601 spin_lock_bh(&adapter
->mbx_lock
);
1603 if (is_valid_ether_addr(hw
->mac
.addr
))
1604 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
1606 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.perm_addr
, 0);
1608 spin_unlock_bh(&adapter
->mbx_lock
);
1610 clear_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1611 ixgbevf_napi_enable_all(adapter
);
1613 /* enable transmits */
1614 netif_tx_start_all_queues(netdev
);
1616 ixgbevf_save_reset_stats(adapter
);
1617 ixgbevf_init_last_counter_stats(adapter
);
1619 hw
->mac
.get_link_status
= 1;
1620 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1623 void ixgbevf_up(struct ixgbevf_adapter
*adapter
)
1625 struct ixgbe_hw
*hw
= &adapter
->hw
;
1627 ixgbevf_configure(adapter
);
1629 ixgbevf_up_complete(adapter
);
1631 /* clear any pending interrupts, may auto mask */
1632 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
1634 ixgbevf_irq_enable(adapter
);
1638 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1639 * @rx_ring: ring to free buffers from
1641 static void ixgbevf_clean_rx_ring(struct ixgbevf_ring
*rx_ring
)
1646 if (!rx_ring
->rx_buffer_info
)
1649 /* Free all the Rx ring sk_buffs */
1650 for (i
= 0; i
< rx_ring
->count
; i
++) {
1651 struct ixgbevf_rx_buffer
*rx_buffer_info
;
1653 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
1654 if (rx_buffer_info
->dma
) {
1655 dma_unmap_single(rx_ring
->dev
, rx_buffer_info
->dma
,
1656 rx_ring
->rx_buf_len
,
1658 rx_buffer_info
->dma
= 0;
1660 if (rx_buffer_info
->skb
) {
1661 struct sk_buff
*skb
= rx_buffer_info
->skb
;
1662 rx_buffer_info
->skb
= NULL
;
1664 struct sk_buff
*this = skb
;
1665 skb
= IXGBE_CB(skb
)->prev
;
1666 dev_kfree_skb(this);
1671 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
1672 memset(rx_ring
->rx_buffer_info
, 0, size
);
1674 /* Zero out the descriptor ring */
1675 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1679 * ixgbevf_clean_tx_ring - Free Tx Buffers
1680 * @tx_ring: ring to be cleaned
1682 static void ixgbevf_clean_tx_ring(struct ixgbevf_ring
*tx_ring
)
1684 struct ixgbevf_tx_buffer
*tx_buffer_info
;
1688 if (!tx_ring
->tx_buffer_info
)
1691 /* Free all the Tx ring sk_buffs */
1692 for (i
= 0; i
< tx_ring
->count
; i
++) {
1693 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
1694 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
1697 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
1698 memset(tx_ring
->tx_buffer_info
, 0, size
);
1700 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1704 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1705 * @adapter: board private structure
1707 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter
*adapter
)
1711 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1712 ixgbevf_clean_rx_ring(adapter
->rx_ring
[i
]);
1716 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1717 * @adapter: board private structure
1719 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter
*adapter
)
1723 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1724 ixgbevf_clean_tx_ring(adapter
->tx_ring
[i
]);
1727 void ixgbevf_down(struct ixgbevf_adapter
*adapter
)
1729 struct net_device
*netdev
= adapter
->netdev
;
1730 struct ixgbe_hw
*hw
= &adapter
->hw
;
1733 /* signal that we are down to the interrupt handler */
1734 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1736 /* disable all enabled rx queues */
1737 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1738 ixgbevf_disable_rx_queue(adapter
, adapter
->rx_ring
[i
]);
1740 netif_tx_disable(netdev
);
1744 netif_tx_stop_all_queues(netdev
);
1746 ixgbevf_irq_disable(adapter
);
1748 ixgbevf_napi_disable_all(adapter
);
1750 del_timer_sync(&adapter
->watchdog_timer
);
1751 /* can't call flush scheduled work here because it can deadlock
1752 * if linkwatch_event tries to acquire the rtnl_lock which we are
1754 while (adapter
->flags
& IXGBE_FLAG_IN_WATCHDOG_TASK
)
1757 /* disable transmits in the hardware now that interrupts are off */
1758 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1759 u8 reg_idx
= adapter
->tx_ring
[i
]->reg_idx
;
1761 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(reg_idx
),
1762 IXGBE_TXDCTL_SWFLSH
);
1765 netif_carrier_off(netdev
);
1767 if (!pci_channel_offline(adapter
->pdev
))
1768 ixgbevf_reset(adapter
);
1770 ixgbevf_clean_all_tx_rings(adapter
);
1771 ixgbevf_clean_all_rx_rings(adapter
);
1774 void ixgbevf_reinit_locked(struct ixgbevf_adapter
*adapter
)
1776 WARN_ON(in_interrupt());
1778 while (test_and_set_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
1781 ixgbevf_down(adapter
);
1782 ixgbevf_up(adapter
);
1784 clear_bit(__IXGBEVF_RESETTING
, &adapter
->state
);
1787 void ixgbevf_reset(struct ixgbevf_adapter
*adapter
)
1789 struct ixgbe_hw
*hw
= &adapter
->hw
;
1790 struct net_device
*netdev
= adapter
->netdev
;
1792 if (hw
->mac
.ops
.reset_hw(hw
)) {
1793 hw_dbg(hw
, "PF still resetting\n");
1795 hw
->mac
.ops
.init_hw(hw
);
1796 ixgbevf_negotiate_api(adapter
);
1799 if (is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
1800 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
1802 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
,
1807 static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter
*adapter
,
1811 int vector_threshold
;
1813 /* We'll want at least 2 (vector_threshold):
1814 * 1) TxQ[0] + RxQ[0] handler
1815 * 2) Other (Link Status Change, etc.)
1817 vector_threshold
= MIN_MSIX_COUNT
;
1819 /* The more we get, the more we will assign to Tx/Rx Cleanup
1820 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1821 * Right now, we simply care about how many we'll get; we'll
1822 * set them up later while requesting irq's.
1824 while (vectors
>= vector_threshold
) {
1825 err
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
1827 if (!err
|| err
< 0) /* Success or a nasty failure. */
1829 else /* err == number of vectors we should try again with */
1833 if (vectors
< vector_threshold
)
1837 dev_err(&adapter
->pdev
->dev
,
1838 "Unable to allocate MSI-X interrupts\n");
1839 kfree(adapter
->msix_entries
);
1840 adapter
->msix_entries
= NULL
;
1843 * Adjust for only the vectors we'll use, which is minimum
1844 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1845 * vectors we were allocated.
1847 adapter
->num_msix_vectors
= vectors
;
1854 * ixgbevf_set_num_queues - Allocate queues for device, feature dependent
1855 * @adapter: board private structure to initialize
1857 * This is the top level queue allocation routine. The order here is very
1858 * important, starting with the "most" number of features turned on at once,
1859 * and ending with the smallest set of features. This way large combinations
1860 * can be allocated if they're turned on, and smaller combinations are the
1861 * fallthrough conditions.
1864 static void ixgbevf_set_num_queues(struct ixgbevf_adapter
*adapter
)
1866 struct ixgbe_hw
*hw
= &adapter
->hw
;
1867 unsigned int def_q
= 0;
1868 unsigned int num_tcs
= 0;
1871 /* Start with base case */
1872 adapter
->num_rx_queues
= 1;
1873 adapter
->num_tx_queues
= 1;
1875 spin_lock_bh(&adapter
->mbx_lock
);
1877 /* fetch queue configuration from the PF */
1878 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
1880 spin_unlock_bh(&adapter
->mbx_lock
);
1885 /* we need as many queues as traffic classes */
1887 adapter
->num_rx_queues
= num_tcs
;
1891 * ixgbevf_alloc_queues - Allocate memory for all rings
1892 * @adapter: board private structure to initialize
1894 * We allocate one ring per queue at run-time since we don't know the
1895 * number of queues at compile-time. The polling_netdev array is
1896 * intended for Multiqueue, but should work fine with a single queue.
1898 static int ixgbevf_alloc_queues(struct ixgbevf_adapter
*adapter
)
1900 struct ixgbevf_ring
*ring
;
1903 for (; tx
< adapter
->num_tx_queues
; tx
++) {
1904 ring
= kzalloc(sizeof(*ring
), GFP_KERNEL
);
1906 goto err_allocation
;
1908 ring
->dev
= &adapter
->pdev
->dev
;
1909 ring
->netdev
= adapter
->netdev
;
1910 ring
->count
= adapter
->tx_ring_count
;
1911 ring
->queue_index
= tx
;
1914 adapter
->tx_ring
[tx
] = ring
;
1917 for (; rx
< adapter
->num_rx_queues
; rx
++) {
1918 ring
= kzalloc(sizeof(*ring
), GFP_KERNEL
);
1920 goto err_allocation
;
1922 ring
->dev
= &adapter
->pdev
->dev
;
1923 ring
->netdev
= adapter
->netdev
;
1925 ring
->count
= adapter
->rx_ring_count
;
1926 ring
->queue_index
= rx
;
1929 adapter
->rx_ring
[rx
] = ring
;
1936 kfree(adapter
->tx_ring
[--tx
]);
1937 adapter
->tx_ring
[tx
] = NULL
;
1941 kfree(adapter
->rx_ring
[--rx
]);
1942 adapter
->rx_ring
[rx
] = NULL
;
1948 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
1949 * @adapter: board private structure to initialize
1951 * Attempt to configure the interrupts using the best available
1952 * capabilities of the hardware and the kernel.
1954 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter
*adapter
)
1956 struct net_device
*netdev
= adapter
->netdev
;
1958 int vector
, v_budget
;
1961 * It's easy to be greedy for MSI-X vectors, but it really
1962 * doesn't do us much good if we have a lot more vectors
1963 * than CPU's. So let's be conservative and only ask for
1964 * (roughly) the same number of vectors as there are CPU's.
1965 * The default is to use pairs of vectors.
1967 v_budget
= max(adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1968 v_budget
= min_t(int, v_budget
, num_online_cpus());
1969 v_budget
+= NON_Q_VECTORS
;
1971 /* A failure in MSI-X entry allocation isn't fatal, but it does
1972 * mean we disable MSI-X capabilities of the adapter. */
1973 adapter
->msix_entries
= kcalloc(v_budget
,
1974 sizeof(struct msix_entry
), GFP_KERNEL
);
1975 if (!adapter
->msix_entries
) {
1980 for (vector
= 0; vector
< v_budget
; vector
++)
1981 adapter
->msix_entries
[vector
].entry
= vector
;
1983 err
= ixgbevf_acquire_msix_vectors(adapter
, v_budget
);
1987 err
= netif_set_real_num_tx_queues(netdev
, adapter
->num_tx_queues
);
1991 err
= netif_set_real_num_rx_queues(netdev
, adapter
->num_rx_queues
);
1998 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
1999 * @adapter: board private structure to initialize
2001 * We allocate one q_vector per queue interrupt. If allocation fails we
2004 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter
*adapter
)
2006 int q_idx
, num_q_vectors
;
2007 struct ixgbevf_q_vector
*q_vector
;
2009 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2011 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
2012 q_vector
= kzalloc(sizeof(struct ixgbevf_q_vector
), GFP_KERNEL
);
2015 q_vector
->adapter
= adapter
;
2016 q_vector
->v_idx
= q_idx
;
2017 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
2019 #ifdef CONFIG_NET_RX_BUSY_POLL
2020 napi_hash_add(&q_vector
->napi
);
2022 adapter
->q_vector
[q_idx
] = q_vector
;
2030 q_vector
= adapter
->q_vector
[q_idx
];
2031 #ifdef CONFIG_NET_RX_BUSY_POLL
2032 napi_hash_del(&q_vector
->napi
);
2034 netif_napi_del(&q_vector
->napi
);
2036 adapter
->q_vector
[q_idx
] = NULL
;
2042 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
2043 * @adapter: board private structure to initialize
2045 * This function frees the memory allocated to the q_vectors. In addition if
2046 * NAPI is enabled it will delete any references to the NAPI struct prior
2047 * to freeing the q_vector.
2049 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter
*adapter
)
2051 int q_idx
, num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2053 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
2054 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
2056 adapter
->q_vector
[q_idx
] = NULL
;
2057 #ifdef CONFIG_NET_RX_BUSY_POLL
2058 napi_hash_del(&q_vector
->napi
);
2060 netif_napi_del(&q_vector
->napi
);
2066 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
2067 * @adapter: board private structure
2070 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter
*adapter
)
2072 pci_disable_msix(adapter
->pdev
);
2073 kfree(adapter
->msix_entries
);
2074 adapter
->msix_entries
= NULL
;
2078 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
2079 * @adapter: board private structure to initialize
2082 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2086 /* Number of supported queues */
2087 ixgbevf_set_num_queues(adapter
);
2089 err
= ixgbevf_set_interrupt_capability(adapter
);
2091 hw_dbg(&adapter
->hw
,
2092 "Unable to setup interrupt capabilities\n");
2093 goto err_set_interrupt
;
2096 err
= ixgbevf_alloc_q_vectors(adapter
);
2098 hw_dbg(&adapter
->hw
, "Unable to allocate memory for queue "
2100 goto err_alloc_q_vectors
;
2103 err
= ixgbevf_alloc_queues(adapter
);
2105 pr_err("Unable to allocate memory for queues\n");
2106 goto err_alloc_queues
;
2109 hw_dbg(&adapter
->hw
, "Multiqueue %s: Rx Queue count = %u, "
2110 "Tx Queue count = %u\n",
2111 (adapter
->num_rx_queues
> 1) ? "Enabled" :
2112 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
2114 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2118 ixgbevf_free_q_vectors(adapter
);
2119 err_alloc_q_vectors
:
2120 ixgbevf_reset_interrupt_capability(adapter
);
2126 * ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings
2127 * @adapter: board private structure to clear interrupt scheme on
2129 * We go through and clear interrupt specific resources and reset the structure
2130 * to pre-load conditions
2132 static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2136 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2137 kfree(adapter
->tx_ring
[i
]);
2138 adapter
->tx_ring
[i
] = NULL
;
2140 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2141 kfree(adapter
->rx_ring
[i
]);
2142 adapter
->rx_ring
[i
] = NULL
;
2145 adapter
->num_tx_queues
= 0;
2146 adapter
->num_rx_queues
= 0;
2148 ixgbevf_free_q_vectors(adapter
);
2149 ixgbevf_reset_interrupt_capability(adapter
);
2153 * ixgbevf_sw_init - Initialize general software structures
2154 * (struct ixgbevf_adapter)
2155 * @adapter: board private structure to initialize
2157 * ixgbevf_sw_init initializes the Adapter private data structure.
2158 * Fields are initialized based on PCI device information and
2159 * OS network device settings (MTU size).
2161 static int ixgbevf_sw_init(struct ixgbevf_adapter
*adapter
)
2163 struct ixgbe_hw
*hw
= &adapter
->hw
;
2164 struct pci_dev
*pdev
= adapter
->pdev
;
2165 struct net_device
*netdev
= adapter
->netdev
;
2168 /* PCI config space info */
2170 hw
->vendor_id
= pdev
->vendor
;
2171 hw
->device_id
= pdev
->device
;
2172 hw
->revision_id
= pdev
->revision
;
2173 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2174 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2176 hw
->mbx
.ops
.init_params(hw
);
2178 /* assume legacy case in which PF would only give VF 2 queues */
2179 hw
->mac
.max_tx_queues
= 2;
2180 hw
->mac
.max_rx_queues
= 2;
2182 /* lock to protect mailbox accesses */
2183 spin_lock_init(&adapter
->mbx_lock
);
2185 err
= hw
->mac
.ops
.reset_hw(hw
);
2187 dev_info(&pdev
->dev
,
2188 "PF still in reset state. Is the PF interface up?\n");
2190 err
= hw
->mac
.ops
.init_hw(hw
);
2192 pr_err("init_shared_code failed: %d\n", err
);
2195 ixgbevf_negotiate_api(adapter
);
2196 err
= hw
->mac
.ops
.get_mac_addr(hw
, hw
->mac
.addr
);
2198 dev_info(&pdev
->dev
, "Error reading MAC address\n");
2199 else if (is_zero_ether_addr(adapter
->hw
.mac
.addr
))
2200 dev_info(&pdev
->dev
,
2201 "MAC address not assigned by administrator.\n");
2202 memcpy(netdev
->dev_addr
, hw
->mac
.addr
, netdev
->addr_len
);
2205 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2206 dev_info(&pdev
->dev
, "Assigning random MAC address\n");
2207 eth_hw_addr_random(netdev
);
2208 memcpy(hw
->mac
.addr
, netdev
->dev_addr
, netdev
->addr_len
);
2211 /* Enable dynamic interrupt throttling rates */
2212 adapter
->rx_itr_setting
= 1;
2213 adapter
->tx_itr_setting
= 1;
2215 /* set default ring sizes */
2216 adapter
->tx_ring_count
= IXGBEVF_DEFAULT_TXD
;
2217 adapter
->rx_ring_count
= IXGBEVF_DEFAULT_RXD
;
2219 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2226 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2228 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2229 if (current_counter < last_counter) \
2230 counter += 0x100000000LL; \
2231 last_counter = current_counter; \
2232 counter &= 0xFFFFFFFF00000000LL; \
2233 counter |= current_counter; \
2236 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2238 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2239 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2240 u64 current_counter = (current_counter_msb << 32) | \
2241 current_counter_lsb; \
2242 if (current_counter < last_counter) \
2243 counter += 0x1000000000LL; \
2244 last_counter = current_counter; \
2245 counter &= 0xFFFFFFF000000000LL; \
2246 counter |= current_counter; \
2249 * ixgbevf_update_stats - Update the board statistics counters.
2250 * @adapter: board private structure
2252 void ixgbevf_update_stats(struct ixgbevf_adapter
*adapter
)
2254 struct ixgbe_hw
*hw
= &adapter
->hw
;
2257 if (!adapter
->link_up
)
2260 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC
, adapter
->stats
.last_vfgprc
,
2261 adapter
->stats
.vfgprc
);
2262 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC
, adapter
->stats
.last_vfgptc
,
2263 adapter
->stats
.vfgptc
);
2264 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB
, IXGBE_VFGORC_MSB
,
2265 adapter
->stats
.last_vfgorc
,
2266 adapter
->stats
.vfgorc
);
2267 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB
, IXGBE_VFGOTC_MSB
,
2268 adapter
->stats
.last_vfgotc
,
2269 adapter
->stats
.vfgotc
);
2270 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC
, adapter
->stats
.last_vfmprc
,
2271 adapter
->stats
.vfmprc
);
2273 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2274 adapter
->hw_csum_rx_error
+=
2275 adapter
->rx_ring
[i
]->hw_csum_rx_error
;
2276 adapter
->rx_ring
[i
]->hw_csum_rx_error
= 0;
2281 * ixgbevf_watchdog - Timer Call-back
2282 * @data: pointer to adapter cast into an unsigned long
2284 static void ixgbevf_watchdog(unsigned long data
)
2286 struct ixgbevf_adapter
*adapter
= (struct ixgbevf_adapter
*)data
;
2287 struct ixgbe_hw
*hw
= &adapter
->hw
;
2292 * Do the watchdog outside of interrupt context due to the lovely
2293 * delays that some of the newer hardware requires
2296 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2297 goto watchdog_short_circuit
;
2299 /* get one bit for every active tx/rx interrupt vector */
2300 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
2301 struct ixgbevf_q_vector
*qv
= adapter
->q_vector
[i
];
2302 if (qv
->rx
.ring
|| qv
->tx
.ring
)
2306 IXGBE_WRITE_REG(hw
, IXGBE_VTEICS
, eics
);
2308 watchdog_short_circuit
:
2309 schedule_work(&adapter
->watchdog_task
);
2313 * ixgbevf_tx_timeout - Respond to a Tx Hang
2314 * @netdev: network interface device structure
2316 static void ixgbevf_tx_timeout(struct net_device
*netdev
)
2318 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2320 /* Do the reset outside of interrupt context */
2321 schedule_work(&adapter
->reset_task
);
2324 static void ixgbevf_reset_task(struct work_struct
*work
)
2326 struct ixgbevf_adapter
*adapter
;
2327 adapter
= container_of(work
, struct ixgbevf_adapter
, reset_task
);
2329 /* If we're already down or resetting, just bail */
2330 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2331 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2334 adapter
->tx_timeout_count
++;
2336 ixgbevf_reinit_locked(adapter
);
2340 * ixgbevf_watchdog_task - worker thread to bring link up
2341 * @work: pointer to work_struct containing our data
2343 static void ixgbevf_watchdog_task(struct work_struct
*work
)
2345 struct ixgbevf_adapter
*adapter
= container_of(work
,
2346 struct ixgbevf_adapter
,
2348 struct net_device
*netdev
= adapter
->netdev
;
2349 struct ixgbe_hw
*hw
= &adapter
->hw
;
2350 u32 link_speed
= adapter
->link_speed
;
2351 bool link_up
= adapter
->link_up
;
2354 ixgbevf_queue_reset_subtask(adapter
);
2356 adapter
->flags
|= IXGBE_FLAG_IN_WATCHDOG_TASK
;
2359 * Always check the link on the watchdog because we have
2362 spin_lock_bh(&adapter
->mbx_lock
);
2364 need_reset
= hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
2366 spin_unlock_bh(&adapter
->mbx_lock
);
2369 adapter
->link_up
= link_up
;
2370 adapter
->link_speed
= link_speed
;
2371 netif_carrier_off(netdev
);
2372 netif_tx_stop_all_queues(netdev
);
2373 schedule_work(&adapter
->reset_task
);
2376 adapter
->link_up
= link_up
;
2377 adapter
->link_speed
= link_speed
;
2380 if (!netif_carrier_ok(netdev
)) {
2381 char *link_speed_string
;
2382 switch (link_speed
) {
2383 case IXGBE_LINK_SPEED_10GB_FULL
:
2384 link_speed_string
= "10 Gbps";
2386 case IXGBE_LINK_SPEED_1GB_FULL
:
2387 link_speed_string
= "1 Gbps";
2389 case IXGBE_LINK_SPEED_100_FULL
:
2390 link_speed_string
= "100 Mbps";
2393 link_speed_string
= "unknown speed";
2396 dev_info(&adapter
->pdev
->dev
,
2397 "NIC Link is Up, %s\n", link_speed_string
);
2398 netif_carrier_on(netdev
);
2399 netif_tx_wake_all_queues(netdev
);
2402 adapter
->link_up
= false;
2403 adapter
->link_speed
= 0;
2404 if (netif_carrier_ok(netdev
)) {
2405 dev_info(&adapter
->pdev
->dev
, "NIC Link is Down\n");
2406 netif_carrier_off(netdev
);
2407 netif_tx_stop_all_queues(netdev
);
2411 ixgbevf_update_stats(adapter
);
2414 /* Reset the timer */
2415 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2416 mod_timer(&adapter
->watchdog_timer
,
2417 round_jiffies(jiffies
+ (2 * HZ
)));
2419 adapter
->flags
&= ~IXGBE_FLAG_IN_WATCHDOG_TASK
;
2423 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2424 * @tx_ring: Tx descriptor ring for a specific queue
2426 * Free all transmit software resources
2428 void ixgbevf_free_tx_resources(struct ixgbevf_ring
*tx_ring
)
2430 ixgbevf_clean_tx_ring(tx_ring
);
2432 vfree(tx_ring
->tx_buffer_info
);
2433 tx_ring
->tx_buffer_info
= NULL
;
2435 /* if not set, then don't free */
2439 dma_free_coherent(tx_ring
->dev
, tx_ring
->size
, tx_ring
->desc
,
2442 tx_ring
->desc
= NULL
;
2446 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2447 * @adapter: board private structure
2449 * Free all transmit software resources
2451 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2455 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2456 if (adapter
->tx_ring
[i
]->desc
)
2457 ixgbevf_free_tx_resources(adapter
->tx_ring
[i
]);
2461 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2462 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2464 * Return 0 on success, negative on failure
2466 int ixgbevf_setup_tx_resources(struct ixgbevf_ring
*tx_ring
)
2470 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
2471 tx_ring
->tx_buffer_info
= vzalloc(size
);
2472 if (!tx_ring
->tx_buffer_info
)
2475 /* round up to nearest 4K */
2476 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
2477 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2479 tx_ring
->desc
= dma_alloc_coherent(tx_ring
->dev
, tx_ring
->size
,
2480 &tx_ring
->dma
, GFP_KERNEL
);
2487 vfree(tx_ring
->tx_buffer_info
);
2488 tx_ring
->tx_buffer_info
= NULL
;
2489 hw_dbg(&adapter
->hw
, "Unable to allocate memory for the transmit "
2490 "descriptor ring\n");
2495 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2496 * @adapter: board private structure
2498 * If this function returns with an error, then it's possible one or
2499 * more of the rings is populated (while the rest are not). It is the
2500 * callers duty to clean those orphaned rings.
2502 * Return 0 on success, negative on failure
2504 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2508 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2509 err
= ixgbevf_setup_tx_resources(adapter
->tx_ring
[i
]);
2512 hw_dbg(&adapter
->hw
,
2513 "Allocation for Tx Queue %u failed\n", i
);
2521 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2522 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2524 * Returns 0 on success, negative on failure
2526 int ixgbevf_setup_rx_resources(struct ixgbevf_ring
*rx_ring
)
2530 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
2531 rx_ring
->rx_buffer_info
= vzalloc(size
);
2532 if (!rx_ring
->rx_buffer_info
)
2535 /* Round up to nearest 4K */
2536 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
2537 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2539 rx_ring
->desc
= dma_alloc_coherent(rx_ring
->dev
, rx_ring
->size
,
2540 &rx_ring
->dma
, GFP_KERNEL
);
2547 vfree(rx_ring
->rx_buffer_info
);
2548 rx_ring
->rx_buffer_info
= NULL
;
2549 dev_err(rx_ring
->dev
, "Unable to allocate memory for the Rx descriptor ring\n");
2554 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2555 * @adapter: board private structure
2557 * If this function returns with an error, then it's possible one or
2558 * more of the rings is populated (while the rest are not). It is the
2559 * callers duty to clean those orphaned rings.
2561 * Return 0 on success, negative on failure
2563 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2567 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2568 err
= ixgbevf_setup_rx_resources(adapter
->rx_ring
[i
]);
2571 hw_dbg(&adapter
->hw
,
2572 "Allocation for Rx Queue %u failed\n", i
);
2579 * ixgbevf_free_rx_resources - Free Rx Resources
2580 * @rx_ring: ring to clean the resources from
2582 * Free all receive software resources
2584 void ixgbevf_free_rx_resources(struct ixgbevf_ring
*rx_ring
)
2586 ixgbevf_clean_rx_ring(rx_ring
);
2588 vfree(rx_ring
->rx_buffer_info
);
2589 rx_ring
->rx_buffer_info
= NULL
;
2591 dma_free_coherent(rx_ring
->dev
, rx_ring
->size
, rx_ring
->desc
,
2594 rx_ring
->desc
= NULL
;
2598 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2599 * @adapter: board private structure
2601 * Free all receive software resources
2603 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2607 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2608 if (adapter
->rx_ring
[i
]->desc
)
2609 ixgbevf_free_rx_resources(adapter
->rx_ring
[i
]);
2613 * ixgbevf_open - Called when a network interface is made active
2614 * @netdev: network interface device structure
2616 * Returns 0 on success, negative value on failure
2618 * The open entry point is called when a network interface is made
2619 * active by the system (IFF_UP). At this point all resources needed
2620 * for transmit and receive operations are allocated, the interrupt
2621 * handler is registered with the OS, the watchdog timer is started,
2622 * and the stack is notified that the interface is ready.
2624 static int ixgbevf_open(struct net_device
*netdev
)
2626 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2627 struct ixgbe_hw
*hw
= &adapter
->hw
;
2630 /* A previous failure to open the device because of a lack of
2631 * available MSIX vector resources may have reset the number
2632 * of msix vectors variable to zero. The only way to recover
2633 * is to unload/reload the driver and hope that the system has
2634 * been able to recover some MSIX vector resources.
2636 if (!adapter
->num_msix_vectors
)
2639 /* disallow open during test */
2640 if (test_bit(__IXGBEVF_TESTING
, &adapter
->state
))
2643 if (hw
->adapter_stopped
) {
2644 ixgbevf_reset(adapter
);
2645 /* if adapter is still stopped then PF isn't up and
2646 * the vf can't start. */
2647 if (hw
->adapter_stopped
) {
2648 err
= IXGBE_ERR_MBX
;
2649 pr_err("Unable to start - perhaps the PF Driver isn't "
2651 goto err_setup_reset
;
2655 /* allocate transmit descriptors */
2656 err
= ixgbevf_setup_all_tx_resources(adapter
);
2660 /* allocate receive descriptors */
2661 err
= ixgbevf_setup_all_rx_resources(adapter
);
2665 ixgbevf_configure(adapter
);
2668 * Map the Tx/Rx rings to the vectors we were allotted.
2669 * if request_irq will be called in this function map_rings
2670 * must be called *before* up_complete
2672 ixgbevf_map_rings_to_vectors(adapter
);
2674 ixgbevf_up_complete(adapter
);
2676 /* clear any pending interrupts, may auto mask */
2677 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
2678 err
= ixgbevf_request_irq(adapter
);
2682 ixgbevf_irq_enable(adapter
);
2687 ixgbevf_down(adapter
);
2689 ixgbevf_free_all_rx_resources(adapter
);
2691 ixgbevf_free_all_tx_resources(adapter
);
2692 ixgbevf_reset(adapter
);
2700 * ixgbevf_close - Disables a network interface
2701 * @netdev: network interface device structure
2703 * Returns 0, this is not allowed to fail
2705 * The close entry point is called when an interface is de-activated
2706 * by the OS. The hardware is still under the drivers control, but
2707 * needs to be disabled. A global MAC reset is issued to stop the
2708 * hardware, and all transmit and receive resources are freed.
2710 static int ixgbevf_close(struct net_device
*netdev
)
2712 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2714 ixgbevf_down(adapter
);
2715 ixgbevf_free_irq(adapter
);
2717 ixgbevf_free_all_tx_resources(adapter
);
2718 ixgbevf_free_all_rx_resources(adapter
);
2723 static void ixgbevf_queue_reset_subtask(struct ixgbevf_adapter
*adapter
)
2725 struct net_device
*dev
= adapter
->netdev
;
2727 if (!(adapter
->flags
& IXGBEVF_FLAG_QUEUE_RESET_REQUESTED
))
2730 adapter
->flags
&= ~IXGBEVF_FLAG_QUEUE_RESET_REQUESTED
;
2732 /* if interface is down do nothing */
2733 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2734 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2737 /* Hardware has to reinitialize queues and interrupts to
2738 * match packet buffer alignment. Unfortunately, the
2739 * hardware is not flexible enough to do this dynamically.
2741 if (netif_running(dev
))
2744 ixgbevf_clear_interrupt_scheme(adapter
);
2745 ixgbevf_init_interrupt_scheme(adapter
);
2747 if (netif_running(dev
))
2751 static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring
*tx_ring
,
2752 u32 vlan_macip_lens
, u32 type_tucmd
,
2755 struct ixgbe_adv_tx_context_desc
*context_desc
;
2756 u16 i
= tx_ring
->next_to_use
;
2758 context_desc
= IXGBEVF_TX_CTXTDESC(tx_ring
, i
);
2761 tx_ring
->next_to_use
= (i
< tx_ring
->count
) ? i
: 0;
2763 /* set bits to identify this as an advanced context descriptor */
2764 type_tucmd
|= IXGBE_TXD_CMD_DEXT
| IXGBE_ADVTXD_DTYP_CTXT
;
2766 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
2767 context_desc
->seqnum_seed
= 0;
2768 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd
);
2769 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2772 static int ixgbevf_tso(struct ixgbevf_ring
*tx_ring
,
2773 struct ixgbevf_tx_buffer
*first
,
2776 struct sk_buff
*skb
= first
->skb
;
2777 u32 vlan_macip_lens
, type_tucmd
;
2778 u32 mss_l4len_idx
, l4len
;
2780 if (!skb_is_gso(skb
))
2783 if (skb_header_cloned(skb
)) {
2784 int err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2789 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2790 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2792 if (skb
->protocol
== htons(ETH_P_IP
)) {
2793 struct iphdr
*iph
= ip_hdr(skb
);
2796 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2800 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2801 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
2802 IXGBE_TX_FLAGS_CSUM
|
2803 IXGBE_TX_FLAGS_IPV4
;
2804 } else if (skb_is_gso_v6(skb
)) {
2805 ipv6_hdr(skb
)->payload_len
= 0;
2806 tcp_hdr(skb
)->check
=
2807 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2808 &ipv6_hdr(skb
)->daddr
,
2810 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
2811 IXGBE_TX_FLAGS_CSUM
;
2814 /* compute header lengths */
2815 l4len
= tcp_hdrlen(skb
);
2817 *hdr_len
= skb_transport_offset(skb
) + l4len
;
2819 /* update gso size and bytecount with header size */
2820 first
->gso_segs
= skb_shinfo(skb
)->gso_segs
;
2821 first
->bytecount
+= (first
->gso_segs
- 1) * *hdr_len
;
2823 /* mss_l4len_id: use 1 as index for TSO */
2824 mss_l4len_idx
= l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
;
2825 mss_l4len_idx
|= skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
;
2826 mss_l4len_idx
|= 1 << IXGBE_ADVTXD_IDX_SHIFT
;
2828 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
2829 vlan_macip_lens
= skb_network_header_len(skb
);
2830 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2831 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2833 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2834 type_tucmd
, mss_l4len_idx
);
2839 static void ixgbevf_tx_csum(struct ixgbevf_ring
*tx_ring
,
2840 struct ixgbevf_tx_buffer
*first
)
2842 struct sk_buff
*skb
= first
->skb
;
2843 u32 vlan_macip_lens
= 0;
2844 u32 mss_l4len_idx
= 0;
2847 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2849 switch (skb
->protocol
) {
2850 case __constant_htons(ETH_P_IP
):
2851 vlan_macip_lens
|= skb_network_header_len(skb
);
2852 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2853 l4_hdr
= ip_hdr(skb
)->protocol
;
2855 case __constant_htons(ETH_P_IPV6
):
2856 vlan_macip_lens
|= skb_network_header_len(skb
);
2857 l4_hdr
= ipv6_hdr(skb
)->nexthdr
;
2860 if (unlikely(net_ratelimit())) {
2861 dev_warn(tx_ring
->dev
,
2862 "partial checksum but proto=%x!\n",
2870 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2871 mss_l4len_idx
= tcp_hdrlen(skb
) <<
2872 IXGBE_ADVTXD_L4LEN_SHIFT
;
2875 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
2876 mss_l4len_idx
= sizeof(struct sctphdr
) <<
2877 IXGBE_ADVTXD_L4LEN_SHIFT
;
2880 mss_l4len_idx
= sizeof(struct udphdr
) <<
2881 IXGBE_ADVTXD_L4LEN_SHIFT
;
2884 if (unlikely(net_ratelimit())) {
2885 dev_warn(tx_ring
->dev
,
2886 "partial checksum but l4 proto=%x!\n",
2892 /* update TX checksum flag */
2893 first
->tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
2896 /* vlan_macip_lens: MACLEN, VLAN tag */
2897 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2898 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2900 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2901 type_tucmd
, mss_l4len_idx
);
2904 static int ixgbevf_tx_map(struct ixgbevf_ring
*tx_ring
,
2905 struct ixgbevf_tx_buffer
*first
)
2907 struct sk_buff
*skb
= first
->skb
;
2908 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2910 unsigned int total
= skb
->len
;
2911 unsigned int offset
= 0, size
;
2913 unsigned int nr_frags
= skb_shinfo(skb
)->nr_frags
;
2917 i
= tx_ring
->next_to_use
;
2919 len
= min(skb_headlen(skb
), total
);
2921 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2922 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2924 tx_buffer_info
->length
= size
;
2925 tx_buffer_info
->tx_flags
= first
->tx_flags
;
2926 tx_buffer_info
->dma
= dma_map_single(tx_ring
->dev
,
2928 size
, DMA_TO_DEVICE
);
2929 if (dma_mapping_error(tx_ring
->dev
, tx_buffer_info
->dma
))
2937 if (i
== tx_ring
->count
)
2941 for (f
= 0; f
< nr_frags
; f
++) {
2942 const struct skb_frag_struct
*frag
;
2944 frag
= &skb_shinfo(skb
)->frags
[f
];
2945 len
= min((unsigned int)skb_frag_size(frag
), total
);
2949 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2950 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2952 tx_buffer_info
->length
= size
;
2953 tx_buffer_info
->dma
=
2954 skb_frag_dma_map(tx_ring
->dev
, frag
,
2955 offset
, size
, DMA_TO_DEVICE
);
2956 tx_buffer_info
->tx_flags
|=
2957 IXGBE_TX_FLAGS_MAPPED_AS_PAGE
;
2958 if (dma_mapping_error(tx_ring
->dev
,
2959 tx_buffer_info
->dma
))
2967 if (i
== tx_ring
->count
)
2975 i
= tx_ring
->count
- 1;
2979 first
->next_to_watch
= IXGBEVF_TX_DESC(tx_ring
, i
);
2980 first
->time_stamp
= jiffies
;
2985 dev_err(tx_ring
->dev
, "TX DMA map failed\n");
2987 /* clear timestamp and dma mappings for failed tx_buffer_info map */
2988 tx_buffer_info
->dma
= 0;
2991 /* clear timestamp and dma mappings for remaining portion of packet */
2992 while (count
>= 0) {
2996 i
+= tx_ring
->count
;
2997 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2998 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
3004 static void ixgbevf_tx_queue(struct ixgbevf_ring
*tx_ring
,
3005 struct ixgbevf_tx_buffer
*first
,
3006 int count
, u8 hdr_len
)
3008 union ixgbe_adv_tx_desc
*tx_desc
= NULL
;
3009 struct sk_buff
*skb
= first
->skb
;
3010 struct ixgbevf_tx_buffer
*tx_buffer_info
;
3011 u32 olinfo_status
= 0, cmd_type_len
= 0;
3012 u32 tx_flags
= first
->tx_flags
;
3015 u32 txd_cmd
= IXGBE_TXD_CMD_EOP
| IXGBE_TXD_CMD_RS
| IXGBE_TXD_CMD_IFCS
;
3017 cmd_type_len
|= IXGBE_ADVTXD_DTYP_DATA
;
3019 cmd_type_len
|= IXGBE_ADVTXD_DCMD_IFCS
| IXGBE_ADVTXD_DCMD_DEXT
;
3021 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
3022 cmd_type_len
|= IXGBE_ADVTXD_DCMD_VLE
;
3024 if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
3025 olinfo_status
|= IXGBE_ADVTXD_POPTS_TXSM
;
3027 if (tx_flags
& IXGBE_TX_FLAGS_TSO
) {
3028 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
3030 /* use index 1 context for tso */
3031 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
3032 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
3033 olinfo_status
|= IXGBE_ADVTXD_POPTS_IXSM
;
3037 * Check Context must be set if Tx switch is enabled, which it
3038 * always is for case where virtual functions are running
3040 olinfo_status
|= IXGBE_ADVTXD_CC
;
3042 olinfo_status
|= ((skb
->len
- hdr_len
) << IXGBE_ADVTXD_PAYLEN_SHIFT
);
3044 i
= tx_ring
->next_to_use
;
3046 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
3047 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
3048 tx_desc
->read
.buffer_addr
= cpu_to_le64(tx_buffer_info
->dma
);
3049 tx_desc
->read
.cmd_type_len
=
3050 cpu_to_le32(cmd_type_len
| tx_buffer_info
->length
);
3051 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
3053 if (i
== tx_ring
->count
)
3057 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(txd_cmd
);
3059 tx_ring
->next_to_use
= i
;
3062 static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
3064 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
3065 /* Herbert's original patch had:
3066 * smp_mb__after_netif_stop_queue();
3067 * but since that doesn't exist yet, just open code it. */
3070 /* We need to check again in a case another CPU has just
3071 * made room available. */
3072 if (likely(ixgbevf_desc_unused(tx_ring
) < size
))
3075 /* A reprieve! - use start_queue because it doesn't call schedule */
3076 netif_start_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
3077 ++tx_ring
->tx_stats
.restart_queue
;
3082 static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
3084 if (likely(ixgbevf_desc_unused(tx_ring
) >= size
))
3086 return __ixgbevf_maybe_stop_tx(tx_ring
, size
);
3089 static int ixgbevf_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3091 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3092 struct ixgbevf_tx_buffer
*first
;
3093 struct ixgbevf_ring
*tx_ring
;
3096 u16 count
= TXD_USE_COUNT(skb_headlen(skb
));
3097 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
3101 u8
*dst_mac
= skb_header_pointer(skb
, 0, 0, NULL
);
3103 if (!dst_mac
|| is_link_local_ether_addr(dst_mac
)) {
3105 return NETDEV_TX_OK
;
3108 tx_ring
= adapter
->tx_ring
[skb
->queue_mapping
];
3111 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
3112 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
3113 * + 2 desc gap to keep tail from touching head,
3114 * + 1 desc for context descriptor,
3115 * otherwise try next time
3117 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
3118 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
3119 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
3121 count
+= skb_shinfo(skb
)->nr_frags
;
3123 if (ixgbevf_maybe_stop_tx(tx_ring
, count
+ 3)) {
3124 tx_ring
->tx_stats
.tx_busy
++;
3125 return NETDEV_TX_BUSY
;
3128 /* record the location of the first descriptor for this packet */
3129 first
= &tx_ring
->tx_buffer_info
[tx_ring
->next_to_use
];
3131 first
->bytecount
= skb
->len
;
3132 first
->gso_segs
= 1;
3134 if (vlan_tx_tag_present(skb
)) {
3135 tx_flags
|= vlan_tx_tag_get(skb
);
3136 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
3137 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
3140 /* record initial flags and protocol */
3141 first
->tx_flags
= tx_flags
;
3142 first
->protocol
= vlan_get_protocol(skb
);
3144 tso
= ixgbevf_tso(tx_ring
, first
, &hdr_len
);
3148 ixgbevf_tx_csum(tx_ring
, first
);
3150 ixgbevf_tx_queue(tx_ring
, first
,
3151 ixgbevf_tx_map(tx_ring
, first
), hdr_len
);
3153 /* Force memory writes to complete before letting h/w
3154 * know there are new descriptors to fetch. (Only
3155 * applicable for weak-ordered memory model archs,
3160 writel(tx_ring
->next_to_use
, tx_ring
->tail
);
3161 ixgbevf_maybe_stop_tx(tx_ring
, DESC_NEEDED
);
3163 return NETDEV_TX_OK
;
3166 dev_kfree_skb_any(first
->skb
);
3169 return NETDEV_TX_OK
;
3173 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3174 * @netdev: network interface device structure
3175 * @p: pointer to an address structure
3177 * Returns 0 on success, negative on failure
3179 static int ixgbevf_set_mac(struct net_device
*netdev
, void *p
)
3181 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3182 struct ixgbe_hw
*hw
= &adapter
->hw
;
3183 struct sockaddr
*addr
= p
;
3185 if (!is_valid_ether_addr(addr
->sa_data
))
3186 return -EADDRNOTAVAIL
;
3188 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3189 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3191 spin_lock_bh(&adapter
->mbx_lock
);
3193 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
3195 spin_unlock_bh(&adapter
->mbx_lock
);
3201 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3202 * @netdev: network interface device structure
3203 * @new_mtu: new value for maximum frame size
3205 * Returns 0 on success, negative on failure
3207 static int ixgbevf_change_mtu(struct net_device
*netdev
, int new_mtu
)
3209 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3210 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3211 int max_possible_frame
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3213 switch (adapter
->hw
.api_version
) {
3214 case ixgbe_mbox_api_11
:
3215 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3218 if (adapter
->hw
.mac
.type
== ixgbe_mac_X540_vf
)
3219 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3223 /* MTU < 68 is an error and causes problems on some kernels */
3224 if ((new_mtu
< 68) || (max_frame
> max_possible_frame
))
3227 hw_dbg(&adapter
->hw
, "changing MTU from %d to %d\n",
3228 netdev
->mtu
, new_mtu
);
3229 /* must set new MTU before calling down or up */
3230 netdev
->mtu
= new_mtu
;
3232 if (netif_running(netdev
))
3233 ixgbevf_reinit_locked(adapter
);
3238 static int ixgbevf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3240 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3241 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3246 netif_device_detach(netdev
);
3248 if (netif_running(netdev
)) {
3250 ixgbevf_down(adapter
);
3251 ixgbevf_free_irq(adapter
);
3252 ixgbevf_free_all_tx_resources(adapter
);
3253 ixgbevf_free_all_rx_resources(adapter
);
3257 ixgbevf_clear_interrupt_scheme(adapter
);
3260 retval
= pci_save_state(pdev
);
3265 pci_disable_device(pdev
);
3271 static int ixgbevf_resume(struct pci_dev
*pdev
)
3273 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3274 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3277 pci_set_power_state(pdev
, PCI_D0
);
3278 pci_restore_state(pdev
);
3280 * pci_restore_state clears dev->state_saved so call
3281 * pci_save_state to restore it.
3283 pci_save_state(pdev
);
3285 err
= pci_enable_device_mem(pdev
);
3287 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
3290 pci_set_master(pdev
);
3292 ixgbevf_reset(adapter
);
3295 err
= ixgbevf_init_interrupt_scheme(adapter
);
3298 dev_err(&pdev
->dev
, "Cannot initialize interrupts\n");
3302 if (netif_running(netdev
)) {
3303 err
= ixgbevf_open(netdev
);
3308 netif_device_attach(netdev
);
3313 #endif /* CONFIG_PM */
3314 static void ixgbevf_shutdown(struct pci_dev
*pdev
)
3316 ixgbevf_suspend(pdev
, PMSG_SUSPEND
);
3319 static struct rtnl_link_stats64
*ixgbevf_get_stats(struct net_device
*netdev
,
3320 struct rtnl_link_stats64
*stats
)
3322 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3325 const struct ixgbevf_ring
*ring
;
3328 ixgbevf_update_stats(adapter
);
3330 stats
->multicast
= adapter
->stats
.vfmprc
- adapter
->stats
.base_vfmprc
;
3332 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3333 ring
= adapter
->rx_ring
[i
];
3335 start
= u64_stats_fetch_begin_bh(&ring
->syncp
);
3336 bytes
= ring
->stats
.bytes
;
3337 packets
= ring
->stats
.packets
;
3338 } while (u64_stats_fetch_retry_bh(&ring
->syncp
, start
));
3339 stats
->rx_bytes
+= bytes
;
3340 stats
->rx_packets
+= packets
;
3343 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3344 ring
= adapter
->tx_ring
[i
];
3346 start
= u64_stats_fetch_begin_bh(&ring
->syncp
);
3347 bytes
= ring
->stats
.bytes
;
3348 packets
= ring
->stats
.packets
;
3349 } while (u64_stats_fetch_retry_bh(&ring
->syncp
, start
));
3350 stats
->tx_bytes
+= bytes
;
3351 stats
->tx_packets
+= packets
;
3357 static const struct net_device_ops ixgbevf_netdev_ops
= {
3358 .ndo_open
= ixgbevf_open
,
3359 .ndo_stop
= ixgbevf_close
,
3360 .ndo_start_xmit
= ixgbevf_xmit_frame
,
3361 .ndo_set_rx_mode
= ixgbevf_set_rx_mode
,
3362 .ndo_get_stats64
= ixgbevf_get_stats
,
3363 .ndo_validate_addr
= eth_validate_addr
,
3364 .ndo_set_mac_address
= ixgbevf_set_mac
,
3365 .ndo_change_mtu
= ixgbevf_change_mtu
,
3366 .ndo_tx_timeout
= ixgbevf_tx_timeout
,
3367 .ndo_vlan_rx_add_vid
= ixgbevf_vlan_rx_add_vid
,
3368 .ndo_vlan_rx_kill_vid
= ixgbevf_vlan_rx_kill_vid
,
3369 #ifdef CONFIG_NET_RX_BUSY_POLL
3370 .ndo_busy_poll
= ixgbevf_busy_poll_recv
,
3374 static void ixgbevf_assign_netdev_ops(struct net_device
*dev
)
3376 dev
->netdev_ops
= &ixgbevf_netdev_ops
;
3377 ixgbevf_set_ethtool_ops(dev
);
3378 dev
->watchdog_timeo
= 5 * HZ
;
3382 * ixgbevf_probe - Device Initialization Routine
3383 * @pdev: PCI device information struct
3384 * @ent: entry in ixgbevf_pci_tbl
3386 * Returns 0 on success, negative on failure
3388 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3389 * The OS initialization, configuring of the adapter private structure,
3390 * and a hardware reset occur.
3392 static int ixgbevf_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3394 struct net_device
*netdev
;
3395 struct ixgbevf_adapter
*adapter
= NULL
;
3396 struct ixgbe_hw
*hw
= NULL
;
3397 const struct ixgbevf_info
*ii
= ixgbevf_info_tbl
[ent
->driver_data
];
3398 static int cards_found
;
3399 int err
, pci_using_dac
;
3401 err
= pci_enable_device(pdev
);
3405 if (!dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64))) {
3408 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
3410 dev_err(&pdev
->dev
, "No usable DMA "
3411 "configuration, aborting\n");
3417 err
= pci_request_regions(pdev
, ixgbevf_driver_name
);
3419 dev_err(&pdev
->dev
, "pci_request_regions failed 0x%x\n", err
);
3423 pci_set_master(pdev
);
3425 netdev
= alloc_etherdev_mq(sizeof(struct ixgbevf_adapter
),
3429 goto err_alloc_etherdev
;
3432 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
3434 pci_set_drvdata(pdev
, netdev
);
3435 adapter
= netdev_priv(netdev
);
3437 adapter
->netdev
= netdev
;
3438 adapter
->pdev
= pdev
;
3441 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
3444 * call save state here in standalone driver because it relies on
3445 * adapter struct to exist, and needs to call netdev_priv
3447 pci_save_state(pdev
);
3449 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
3450 pci_resource_len(pdev
, 0));
3456 ixgbevf_assign_netdev_ops(netdev
);
3458 adapter
->bd_number
= cards_found
;
3461 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
3462 hw
->mac
.type
= ii
->mac
;
3464 memcpy(&hw
->mbx
.ops
, &ixgbevf_mbx_ops
,
3465 sizeof(struct ixgbe_mbx_operations
));
3467 /* setup the private structure */
3468 err
= ixgbevf_sw_init(adapter
);
3472 /* The HW MAC address was set and/or determined in sw_init */
3473 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
3474 pr_err("invalid MAC address\n");
3479 netdev
->hw_features
= NETIF_F_SG
|
3486 netdev
->features
= netdev
->hw_features
|
3487 NETIF_F_HW_VLAN_CTAG_TX
|
3488 NETIF_F_HW_VLAN_CTAG_RX
|
3489 NETIF_F_HW_VLAN_CTAG_FILTER
;
3491 netdev
->vlan_features
|= NETIF_F_TSO
;
3492 netdev
->vlan_features
|= NETIF_F_TSO6
;
3493 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
3494 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
3495 netdev
->vlan_features
|= NETIF_F_SG
;
3498 netdev
->features
|= NETIF_F_HIGHDMA
;
3500 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
3502 init_timer(&adapter
->watchdog_timer
);
3503 adapter
->watchdog_timer
.function
= ixgbevf_watchdog
;
3504 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
3506 INIT_WORK(&adapter
->reset_task
, ixgbevf_reset_task
);
3507 INIT_WORK(&adapter
->watchdog_task
, ixgbevf_watchdog_task
);
3509 err
= ixgbevf_init_interrupt_scheme(adapter
);
3513 strcpy(netdev
->name
, "eth%d");
3515 err
= register_netdev(netdev
);
3519 netif_carrier_off(netdev
);
3521 ixgbevf_init_last_counter_stats(adapter
);
3523 /* print the MAC address */
3524 hw_dbg(hw
, "%pM\n", netdev
->dev_addr
);
3526 hw_dbg(hw
, "MAC: %d\n", hw
->mac
.type
);
3528 hw_dbg(hw
, "Intel(R) 82599 Virtual Function\n");
3533 ixgbevf_clear_interrupt_scheme(adapter
);
3535 ixgbevf_reset_interrupt_capability(adapter
);
3536 iounmap(hw
->hw_addr
);
3538 free_netdev(netdev
);
3540 pci_release_regions(pdev
);
3543 pci_disable_device(pdev
);
3548 * ixgbevf_remove - Device Removal Routine
3549 * @pdev: PCI device information struct
3551 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3552 * that it should release a PCI device. The could be caused by a
3553 * Hot-Plug event, or because the driver is going to be removed from
3556 static void ixgbevf_remove(struct pci_dev
*pdev
)
3558 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3559 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3561 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
3563 del_timer_sync(&adapter
->watchdog_timer
);
3565 cancel_work_sync(&adapter
->reset_task
);
3566 cancel_work_sync(&adapter
->watchdog_task
);
3568 if (netdev
->reg_state
== NETREG_REGISTERED
)
3569 unregister_netdev(netdev
);
3571 ixgbevf_clear_interrupt_scheme(adapter
);
3572 ixgbevf_reset_interrupt_capability(adapter
);
3574 iounmap(adapter
->hw
.hw_addr
);
3575 pci_release_regions(pdev
);
3577 hw_dbg(&adapter
->hw
, "Remove complete\n");
3579 free_netdev(netdev
);
3581 pci_disable_device(pdev
);
3585 * ixgbevf_io_error_detected - called when PCI error is detected
3586 * @pdev: Pointer to PCI device
3587 * @state: The current pci connection state
3589 * This function is called after a PCI bus error affecting
3590 * this device has been detected.
3592 static pci_ers_result_t
ixgbevf_io_error_detected(struct pci_dev
*pdev
,
3593 pci_channel_state_t state
)
3595 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3596 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3598 netif_device_detach(netdev
);
3600 if (state
== pci_channel_io_perm_failure
)
3601 return PCI_ERS_RESULT_DISCONNECT
;
3603 if (netif_running(netdev
))
3604 ixgbevf_down(adapter
);
3606 pci_disable_device(pdev
);
3608 /* Request a slot slot reset. */
3609 return PCI_ERS_RESULT_NEED_RESET
;
3613 * ixgbevf_io_slot_reset - called after the pci bus has been reset.
3614 * @pdev: Pointer to PCI device
3616 * Restart the card from scratch, as if from a cold-boot. Implementation
3617 * resembles the first-half of the ixgbevf_resume routine.
3619 static pci_ers_result_t
ixgbevf_io_slot_reset(struct pci_dev
*pdev
)
3621 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3622 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3624 if (pci_enable_device_mem(pdev
)) {
3626 "Cannot re-enable PCI device after reset.\n");
3627 return PCI_ERS_RESULT_DISCONNECT
;
3630 pci_set_master(pdev
);
3632 ixgbevf_reset(adapter
);
3634 return PCI_ERS_RESULT_RECOVERED
;
3638 * ixgbevf_io_resume - called when traffic can start flowing again.
3639 * @pdev: Pointer to PCI device
3641 * This callback is called when the error recovery driver tells us that
3642 * its OK to resume normal operation. Implementation resembles the
3643 * second-half of the ixgbevf_resume routine.
3645 static void ixgbevf_io_resume(struct pci_dev
*pdev
)
3647 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3648 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3650 if (netif_running(netdev
))
3651 ixgbevf_up(adapter
);
3653 netif_device_attach(netdev
);
3656 /* PCI Error Recovery (ERS) */
3657 static const struct pci_error_handlers ixgbevf_err_handler
= {
3658 .error_detected
= ixgbevf_io_error_detected
,
3659 .slot_reset
= ixgbevf_io_slot_reset
,
3660 .resume
= ixgbevf_io_resume
,
3663 static struct pci_driver ixgbevf_driver
= {
3664 .name
= ixgbevf_driver_name
,
3665 .id_table
= ixgbevf_pci_tbl
,
3666 .probe
= ixgbevf_probe
,
3667 .remove
= ixgbevf_remove
,
3669 /* Power Management Hooks */
3670 .suspend
= ixgbevf_suspend
,
3671 .resume
= ixgbevf_resume
,
3673 .shutdown
= ixgbevf_shutdown
,
3674 .err_handler
= &ixgbevf_err_handler
3678 * ixgbevf_init_module - Driver Registration Routine
3680 * ixgbevf_init_module is the first routine called when the driver is
3681 * loaded. All it does is register with the PCI subsystem.
3683 static int __init
ixgbevf_init_module(void)
3686 pr_info("%s - version %s\n", ixgbevf_driver_string
,
3687 ixgbevf_driver_version
);
3689 pr_info("%s\n", ixgbevf_copyright
);
3691 ret
= pci_register_driver(&ixgbevf_driver
);
3695 module_init(ixgbevf_init_module
);
3698 * ixgbevf_exit_module - Driver Exit Cleanup Routine
3700 * ixgbevf_exit_module is called just before the driver is removed
3703 static void __exit
ixgbevf_exit_module(void)
3705 pci_unregister_driver(&ixgbevf_driver
);
3710 * ixgbevf_get_hw_dev_name - return device name string
3711 * used by hardware layer to print debugging information
3713 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw
*hw
)
3715 struct ixgbevf_adapter
*adapter
= hw
->back
;
3716 return adapter
->netdev
->name
;
3720 module_exit(ixgbevf_exit_module
);
3722 /* ixgbevf_main.c */