1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2014 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) 10 Gigabit Virtual Function Network 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 void ixgbevf_remove_adapter(struct ixgbe_hw
*hw
)
104 struct ixgbevf_adapter
*adapter
= hw
->back
;
109 dev_err(&adapter
->pdev
->dev
, "Adapter removed\n");
110 if (test_bit(__IXGBEVF_WORK_INIT
, &adapter
->state
))
111 schedule_work(&adapter
->watchdog_task
);
114 static void ixgbevf_check_remove(struct ixgbe_hw
*hw
, u32 reg
)
118 /* The following check not only optimizes a bit by not
119 * performing a read on the status register when the
120 * register just read was a status register read that
121 * returned IXGBE_FAILED_READ_REG. It also blocks any
122 * potential recursion.
124 if (reg
== IXGBE_VFSTATUS
) {
125 ixgbevf_remove_adapter(hw
);
128 value
= ixgbevf_read_reg(hw
, IXGBE_VFSTATUS
);
129 if (value
== IXGBE_FAILED_READ_REG
)
130 ixgbevf_remove_adapter(hw
);
133 u32
ixgbevf_read_reg(struct ixgbe_hw
*hw
, u32 reg
)
135 u8 __iomem
*reg_addr
= ACCESS_ONCE(hw
->hw_addr
);
138 if (IXGBE_REMOVED(reg_addr
))
139 return IXGBE_FAILED_READ_REG
;
140 value
= readl(reg_addr
+ reg
);
141 if (unlikely(value
== IXGBE_FAILED_READ_REG
))
142 ixgbevf_check_remove(hw
, reg
);
146 static inline void ixgbevf_release_rx_desc(struct ixgbevf_ring
*rx_ring
,
149 rx_ring
->next_to_use
= val
;
152 * Force memory writes to complete before letting h/w
153 * know there are new descriptors to fetch. (Only
154 * applicable for weak-ordered memory model archs,
158 ixgbevf_write_tail(rx_ring
, val
);
162 * ixgbevf_set_ivar - set IVAR registers - maps interrupt causes to vectors
163 * @adapter: pointer to adapter struct
164 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
165 * @queue: queue to map the corresponding interrupt to
166 * @msix_vector: the vector to map to the corresponding queue
168 static void ixgbevf_set_ivar(struct ixgbevf_adapter
*adapter
, s8 direction
,
169 u8 queue
, u8 msix_vector
)
172 struct ixgbe_hw
*hw
= &adapter
->hw
;
173 if (direction
== -1) {
175 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
176 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR_MISC
);
179 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR_MISC
, ivar
);
181 /* tx or rx causes */
182 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
183 index
= ((16 * (queue
& 1)) + (8 * direction
));
184 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR(queue
>> 1));
185 ivar
&= ~(0xFF << index
);
186 ivar
|= (msix_vector
<< index
);
187 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR(queue
>> 1), ivar
);
191 static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_ring
*tx_ring
,
192 struct ixgbevf_tx_buffer
*tx_buffer
)
194 if (tx_buffer
->skb
) {
195 dev_kfree_skb_any(tx_buffer
->skb
);
196 if (dma_unmap_len(tx_buffer
, len
))
197 dma_unmap_single(tx_ring
->dev
,
198 dma_unmap_addr(tx_buffer
, dma
),
199 dma_unmap_len(tx_buffer
, len
),
201 } else if (dma_unmap_len(tx_buffer
, len
)) {
202 dma_unmap_page(tx_ring
->dev
,
203 dma_unmap_addr(tx_buffer
, dma
),
204 dma_unmap_len(tx_buffer
, len
),
207 tx_buffer
->next_to_watch
= NULL
;
208 tx_buffer
->skb
= NULL
;
209 dma_unmap_len_set(tx_buffer
, len
, 0);
210 /* tx_buffer must be completely set up in the transmit path */
213 #define IXGBE_MAX_TXD_PWR 14
214 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
216 /* Tx Descriptors needed, worst case */
217 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IXGBE_MAX_DATA_PER_TXD)
218 #define DESC_NEEDED (MAX_SKB_FRAGS + 4)
220 static void ixgbevf_tx_timeout(struct net_device
*netdev
);
223 * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
224 * @q_vector: board private structure
225 * @tx_ring: tx ring to clean
227 static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector
*q_vector
,
228 struct ixgbevf_ring
*tx_ring
)
230 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
231 struct ixgbevf_tx_buffer
*tx_buffer
;
232 union ixgbe_adv_tx_desc
*tx_desc
;
233 unsigned int total_bytes
= 0, total_packets
= 0;
234 unsigned int budget
= tx_ring
->count
/ 2;
235 unsigned int i
= tx_ring
->next_to_clean
;
237 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
240 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
241 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
245 union ixgbe_adv_tx_desc
*eop_desc
= tx_buffer
->next_to_watch
;
247 /* if next_to_watch is not set then there is no work pending */
251 /* prevent any other reads prior to eop_desc */
252 read_barrier_depends();
254 /* if DD is not set pending work has not been completed */
255 if (!(eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)))
258 /* clear next_to_watch to prevent false hangs */
259 tx_buffer
->next_to_watch
= NULL
;
261 /* update the statistics for this packet */
262 total_bytes
+= tx_buffer
->bytecount
;
263 total_packets
+= tx_buffer
->gso_segs
;
266 dev_kfree_skb_any(tx_buffer
->skb
);
268 /* unmap skb header data */
269 dma_unmap_single(tx_ring
->dev
,
270 dma_unmap_addr(tx_buffer
, dma
),
271 dma_unmap_len(tx_buffer
, len
),
274 /* clear tx_buffer data */
275 tx_buffer
->skb
= NULL
;
276 dma_unmap_len_set(tx_buffer
, len
, 0);
278 /* unmap remaining buffers */
279 while (tx_desc
!= eop_desc
) {
285 tx_buffer
= tx_ring
->tx_buffer_info
;
286 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, 0);
289 /* unmap any remaining paged data */
290 if (dma_unmap_len(tx_buffer
, len
)) {
291 dma_unmap_page(tx_ring
->dev
,
292 dma_unmap_addr(tx_buffer
, dma
),
293 dma_unmap_len(tx_buffer
, len
),
295 dma_unmap_len_set(tx_buffer
, len
, 0);
299 /* move us one more past the eop_desc for start of next pkt */
305 tx_buffer
= tx_ring
->tx_buffer_info
;
306 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, 0);
309 /* issue prefetch for next Tx descriptor */
312 /* update budget accounting */
314 } while (likely(budget
));
317 tx_ring
->next_to_clean
= i
;
318 u64_stats_update_begin(&tx_ring
->syncp
);
319 tx_ring
->stats
.bytes
+= total_bytes
;
320 tx_ring
->stats
.packets
+= total_packets
;
321 u64_stats_update_end(&tx_ring
->syncp
);
322 q_vector
->tx
.total_bytes
+= total_bytes
;
323 q_vector
->tx
.total_packets
+= total_packets
;
325 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
326 if (unlikely(total_packets
&& netif_carrier_ok(tx_ring
->netdev
) &&
327 (ixgbevf_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
328 /* Make sure that anybody stopping the queue after this
329 * sees the new next_to_clean.
333 if (__netif_subqueue_stopped(tx_ring
->netdev
,
334 tx_ring
->queue_index
) &&
335 !test_bit(__IXGBEVF_DOWN
, &adapter
->state
)) {
336 netif_wake_subqueue(tx_ring
->netdev
,
337 tx_ring
->queue_index
);
338 ++tx_ring
->tx_stats
.restart_queue
;
346 * ixgbevf_receive_skb - Send a completed packet up the stack
347 * @q_vector: structure containing interrupt and ring information
348 * @skb: packet to send up
349 * @status: hardware indication of status of receive
350 * @rx_desc: rx descriptor
352 static void ixgbevf_receive_skb(struct ixgbevf_q_vector
*q_vector
,
353 struct sk_buff
*skb
, u8 status
,
354 union ixgbe_adv_rx_desc
*rx_desc
)
356 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
357 bool is_vlan
= (status
& IXGBE_RXD_STAT_VP
);
358 u16 tag
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
360 if (is_vlan
&& test_bit(tag
& VLAN_VID_MASK
, adapter
->active_vlans
))
361 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), tag
);
363 if (!(adapter
->flags
& IXGBE_FLAG_IN_NETPOLL
))
364 napi_gro_receive(&q_vector
->napi
, skb
);
370 * ixgbevf_rx_skb - Helper function to determine proper Rx method
371 * @q_vector: structure containing interrupt and ring information
372 * @skb: packet to send up
373 * @status: hardware indication of status of receive
374 * @rx_desc: rx descriptor
376 static void ixgbevf_rx_skb(struct ixgbevf_q_vector
*q_vector
,
377 struct sk_buff
*skb
, u8 status
,
378 union ixgbe_adv_rx_desc
*rx_desc
)
380 #ifdef CONFIG_NET_RX_BUSY_POLL
381 skb_mark_napi_id(skb
, &q_vector
->napi
);
383 if (ixgbevf_qv_busy_polling(q_vector
)) {
384 netif_receive_skb(skb
);
385 /* exit early if we busy polled */
388 #endif /* CONFIG_NET_RX_BUSY_POLL */
390 ixgbevf_receive_skb(q_vector
, skb
, status
, rx_desc
);
394 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
395 * @ring: pointer to Rx descriptor ring structure
396 * @status_err: hardware indication of status of receive
397 * @skb: skb currently being received and modified
399 static inline void ixgbevf_rx_checksum(struct ixgbevf_ring
*ring
,
400 u32 status_err
, struct sk_buff
*skb
)
402 skb_checksum_none_assert(skb
);
404 /* Rx csum disabled */
405 if (!(ring
->netdev
->features
& NETIF_F_RXCSUM
))
408 /* if IP and error */
409 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
410 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
411 ring
->rx_stats
.csum_err
++;
415 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
418 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
419 ring
->rx_stats
.csum_err
++;
423 /* It must be a TCP or UDP packet with a valid checksum */
424 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
428 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
429 * @rx_ring: rx descriptor ring (for a specific queue) to setup buffers on
431 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_ring
*rx_ring
,
434 union ixgbe_adv_rx_desc
*rx_desc
;
435 struct ixgbevf_rx_buffer
*bi
;
436 unsigned int i
= rx_ring
->next_to_use
;
438 while (cleaned_count
--) {
439 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
440 bi
= &rx_ring
->rx_buffer_info
[i
];
445 skb
= netdev_alloc_skb_ip_align(rx_ring
->netdev
,
446 rx_ring
->rx_buf_len
);
452 bi
->dma
= dma_map_single(rx_ring
->dev
, skb
->data
,
455 if (dma_mapping_error(rx_ring
->dev
, bi
->dma
)) {
458 dev_err(rx_ring
->dev
, "Rx DMA map failed\n");
462 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
465 if (i
== rx_ring
->count
)
470 rx_ring
->rx_stats
.alloc_rx_buff_failed
++;
471 if (rx_ring
->next_to_use
!= i
)
472 ixgbevf_release_rx_desc(rx_ring
, i
);
475 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter
*adapter
,
478 struct ixgbe_hw
*hw
= &adapter
->hw
;
480 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, qmask
);
483 static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector
*q_vector
,
484 struct ixgbevf_ring
*rx_ring
,
487 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
488 struct ixgbevf_rx_buffer
*rx_buffer_info
, *next_buffer
;
492 int cleaned_count
= 0;
493 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
495 i
= rx_ring
->next_to_clean
;
496 rx_desc
= IXGBEVF_RX_DESC(rx_ring
, i
);
497 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
498 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
500 while (staterr
& IXGBE_RXD_STAT_DD
) {
505 rmb(); /* read descriptor and rx_buffer_info after status DD */
506 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
507 skb
= rx_buffer_info
->skb
;
508 prefetch(skb
->data
- NET_IP_ALIGN
);
509 rx_buffer_info
->skb
= NULL
;
511 if (rx_buffer_info
->dma
) {
512 dma_unmap_single(rx_ring
->dev
, rx_buffer_info
->dma
,
515 rx_buffer_info
->dma
= 0;
520 if (i
== rx_ring
->count
)
523 next_rxd
= IXGBEVF_RX_DESC(rx_ring
, i
);
527 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
529 if (!(staterr
& IXGBE_RXD_STAT_EOP
)) {
530 skb
->next
= next_buffer
->skb
;
531 IXGBE_CB(skb
->next
)->prev
= skb
;
532 rx_ring
->rx_stats
.non_eop_descs
++;
536 /* we should not be chaining buffers, if we did drop the skb */
537 if (IXGBE_CB(skb
)->prev
) {
539 struct sk_buff
*this = skb
;
540 skb
= IXGBE_CB(skb
)->prev
;
546 /* ERR_MASK will only have valid bits if EOP set */
547 if (unlikely(staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
)) {
548 dev_kfree_skb_irq(skb
);
552 ixgbevf_rx_checksum(rx_ring
, staterr
, skb
);
554 /* probably a little skewed due to removing CRC */
555 total_rx_bytes
+= skb
->len
;
558 skb
->protocol
= eth_type_trans(skb
, rx_ring
->netdev
);
560 /* Workaround hardware that can't do proper VEPA multicast
563 if ((skb
->pkt_type
== PACKET_BROADCAST
||
564 skb
->pkt_type
== PACKET_MULTICAST
) &&
565 ether_addr_equal(rx_ring
->netdev
->dev_addr
,
566 eth_hdr(skb
)->h_source
)) {
567 dev_kfree_skb_irq(skb
);
571 ixgbevf_rx_skb(q_vector
, skb
, staterr
, rx_desc
);
574 rx_desc
->wb
.upper
.status_error
= 0;
576 /* return some buffers to hardware, one at a time is too slow */
577 if (cleaned_count
>= IXGBEVF_RX_BUFFER_WRITE
) {
578 ixgbevf_alloc_rx_buffers(rx_ring
, cleaned_count
);
582 /* use prefetched values */
584 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
586 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
589 rx_ring
->next_to_clean
= i
;
590 cleaned_count
= ixgbevf_desc_unused(rx_ring
);
593 ixgbevf_alloc_rx_buffers(rx_ring
, cleaned_count
);
595 u64_stats_update_begin(&rx_ring
->syncp
);
596 rx_ring
->stats
.packets
+= total_rx_packets
;
597 rx_ring
->stats
.bytes
+= total_rx_bytes
;
598 u64_stats_update_end(&rx_ring
->syncp
);
599 q_vector
->rx
.total_packets
+= total_rx_packets
;
600 q_vector
->rx
.total_bytes
+= total_rx_bytes
;
602 return total_rx_packets
;
606 * ixgbevf_poll - NAPI polling calback
607 * @napi: napi struct with our devices info in it
608 * @budget: amount of work driver is allowed to do this pass, in packets
610 * This function will clean more than one or more rings associated with a
613 static int ixgbevf_poll(struct napi_struct
*napi
, int budget
)
615 struct ixgbevf_q_vector
*q_vector
=
616 container_of(napi
, struct ixgbevf_q_vector
, napi
);
617 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
618 struct ixgbevf_ring
*ring
;
620 bool clean_complete
= true;
622 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
623 clean_complete
&= ixgbevf_clean_tx_irq(q_vector
, ring
);
625 #ifdef CONFIG_NET_RX_BUSY_POLL
626 if (!ixgbevf_qv_lock_napi(q_vector
))
630 /* attempt to distribute budget to each queue fairly, but don't allow
631 * the budget to go below 1 because we'll exit polling */
632 if (q_vector
->rx
.count
> 1)
633 per_ring_budget
= max(budget
/q_vector
->rx
.count
, 1);
635 per_ring_budget
= budget
;
637 adapter
->flags
|= IXGBE_FLAG_IN_NETPOLL
;
638 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
639 clean_complete
&= (ixgbevf_clean_rx_irq(q_vector
, ring
,
642 adapter
->flags
&= ~IXGBE_FLAG_IN_NETPOLL
;
644 #ifdef CONFIG_NET_RX_BUSY_POLL
645 ixgbevf_qv_unlock_napi(q_vector
);
648 /* If all work not completed, return budget and keep polling */
651 /* all work done, exit the polling mode */
653 if (adapter
->rx_itr_setting
& 1)
654 ixgbevf_set_itr(q_vector
);
655 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
) &&
656 !test_bit(__IXGBEVF_REMOVING
, &adapter
->state
))
657 ixgbevf_irq_enable_queues(adapter
,
658 1 << q_vector
->v_idx
);
664 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
665 * @q_vector: structure containing interrupt and ring information
667 void ixgbevf_write_eitr(struct ixgbevf_q_vector
*q_vector
)
669 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
670 struct ixgbe_hw
*hw
= &adapter
->hw
;
671 int v_idx
= q_vector
->v_idx
;
672 u32 itr_reg
= q_vector
->itr
& IXGBE_MAX_EITR
;
675 * set the WDIS bit to not clear the timer bits and cause an
676 * immediate assertion of the interrupt
678 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
680 IXGBE_WRITE_REG(hw
, IXGBE_VTEITR(v_idx
), itr_reg
);
683 #ifdef CONFIG_NET_RX_BUSY_POLL
684 /* must be called with local_bh_disable()d */
685 static int ixgbevf_busy_poll_recv(struct napi_struct
*napi
)
687 struct ixgbevf_q_vector
*q_vector
=
688 container_of(napi
, struct ixgbevf_q_vector
, napi
);
689 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
690 struct ixgbevf_ring
*ring
;
693 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
694 return LL_FLUSH_FAILED
;
696 if (!ixgbevf_qv_lock_poll(q_vector
))
697 return LL_FLUSH_BUSY
;
699 ixgbevf_for_each_ring(ring
, q_vector
->rx
) {
700 found
= ixgbevf_clean_rx_irq(q_vector
, ring
, 4);
701 #ifdef BP_EXTENDED_STATS
703 ring
->stats
.cleaned
+= found
;
705 ring
->stats
.misses
++;
711 ixgbevf_qv_unlock_poll(q_vector
);
715 #endif /* CONFIG_NET_RX_BUSY_POLL */
718 * ixgbevf_configure_msix - Configure MSI-X hardware
719 * @adapter: board private structure
721 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
724 static void ixgbevf_configure_msix(struct ixgbevf_adapter
*adapter
)
726 struct ixgbevf_q_vector
*q_vector
;
727 int q_vectors
, v_idx
;
729 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
730 adapter
->eims_enable_mask
= 0;
733 * Populate the IVAR table and set the ITR values to the
734 * corresponding register.
736 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
737 struct ixgbevf_ring
*ring
;
738 q_vector
= adapter
->q_vector
[v_idx
];
740 ixgbevf_for_each_ring(ring
, q_vector
->rx
)
741 ixgbevf_set_ivar(adapter
, 0, ring
->reg_idx
, v_idx
);
743 ixgbevf_for_each_ring(ring
, q_vector
->tx
)
744 ixgbevf_set_ivar(adapter
, 1, ring
->reg_idx
, v_idx
);
746 if (q_vector
->tx
.ring
&& !q_vector
->rx
.ring
) {
748 if (adapter
->tx_itr_setting
== 1)
749 q_vector
->itr
= IXGBE_10K_ITR
;
751 q_vector
->itr
= adapter
->tx_itr_setting
;
753 /* rx or rx/tx vector */
754 if (adapter
->rx_itr_setting
== 1)
755 q_vector
->itr
= IXGBE_20K_ITR
;
757 q_vector
->itr
= adapter
->rx_itr_setting
;
760 /* add q_vector eims value to global eims_enable_mask */
761 adapter
->eims_enable_mask
|= 1 << v_idx
;
763 ixgbevf_write_eitr(q_vector
);
766 ixgbevf_set_ivar(adapter
, -1, 1, v_idx
);
767 /* setup eims_other and add value to global eims_enable_mask */
768 adapter
->eims_other
= 1 << v_idx
;
769 adapter
->eims_enable_mask
|= adapter
->eims_other
;
776 latency_invalid
= 255
780 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
781 * @q_vector: structure containing interrupt and ring information
782 * @ring_container: structure containing ring performance data
784 * Stores a new ITR value based on packets and byte
785 * counts during the last interrupt. The advantage of per interrupt
786 * computation is faster updates and more accurate ITR for the current
787 * traffic pattern. Constants in this function were computed
788 * based on theoretical maximum wire speed and thresholds were set based
789 * on testing data as well as attempting to minimize response time
790 * while increasing bulk throughput.
792 static void ixgbevf_update_itr(struct ixgbevf_q_vector
*q_vector
,
793 struct ixgbevf_ring_container
*ring_container
)
795 int bytes
= ring_container
->total_bytes
;
796 int packets
= ring_container
->total_packets
;
799 u8 itr_setting
= ring_container
->itr
;
804 /* simple throttlerate management
805 * 0-20MB/s lowest (100000 ints/s)
806 * 20-100MB/s low (20000 ints/s)
807 * 100-1249MB/s bulk (8000 ints/s)
809 /* what was last interrupt timeslice? */
810 timepassed_us
= q_vector
->itr
>> 2;
811 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
813 switch (itr_setting
) {
815 if (bytes_perint
> 10)
816 itr_setting
= low_latency
;
819 if (bytes_perint
> 20)
820 itr_setting
= bulk_latency
;
821 else if (bytes_perint
<= 10)
822 itr_setting
= lowest_latency
;
825 if (bytes_perint
<= 20)
826 itr_setting
= low_latency
;
830 /* clear work counters since we have the values we need */
831 ring_container
->total_bytes
= 0;
832 ring_container
->total_packets
= 0;
834 /* write updated itr to ring container */
835 ring_container
->itr
= itr_setting
;
838 static void ixgbevf_set_itr(struct ixgbevf_q_vector
*q_vector
)
840 u32 new_itr
= q_vector
->itr
;
843 ixgbevf_update_itr(q_vector
, &q_vector
->tx
);
844 ixgbevf_update_itr(q_vector
, &q_vector
->rx
);
846 current_itr
= max(q_vector
->rx
.itr
, q_vector
->tx
.itr
);
848 switch (current_itr
) {
849 /* counts and packets in update_itr are dependent on these numbers */
851 new_itr
= IXGBE_100K_ITR
;
854 new_itr
= IXGBE_20K_ITR
;
858 new_itr
= IXGBE_8K_ITR
;
862 if (new_itr
!= q_vector
->itr
) {
863 /* do an exponential smoothing */
864 new_itr
= (10 * new_itr
* q_vector
->itr
) /
865 ((9 * new_itr
) + q_vector
->itr
);
867 /* save the algorithm value here */
868 q_vector
->itr
= new_itr
;
870 ixgbevf_write_eitr(q_vector
);
874 static irqreturn_t
ixgbevf_msix_other(int irq
, void *data
)
876 struct ixgbevf_adapter
*adapter
= data
;
877 struct ixgbe_hw
*hw
= &adapter
->hw
;
879 hw
->mac
.get_link_status
= 1;
881 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
) &&
882 !test_bit(__IXGBEVF_REMOVING
, &adapter
->state
))
883 mod_timer(&adapter
->watchdog_timer
, jiffies
);
885 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_other
);
891 * ixgbevf_msix_clean_rings - single unshared vector rx clean (all queues)
893 * @data: pointer to our q_vector struct for this interrupt vector
895 static irqreturn_t
ixgbevf_msix_clean_rings(int irq
, void *data
)
897 struct ixgbevf_q_vector
*q_vector
= data
;
899 /* EIAM disabled interrupts (on this vector) for us */
900 if (q_vector
->rx
.ring
|| q_vector
->tx
.ring
)
901 napi_schedule(&q_vector
->napi
);
906 static inline void map_vector_to_rxq(struct ixgbevf_adapter
*a
, int v_idx
,
909 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
911 a
->rx_ring
[r_idx
]->next
= q_vector
->rx
.ring
;
912 q_vector
->rx
.ring
= a
->rx_ring
[r_idx
];
913 q_vector
->rx
.count
++;
916 static inline void map_vector_to_txq(struct ixgbevf_adapter
*a
, int v_idx
,
919 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
921 a
->tx_ring
[t_idx
]->next
= q_vector
->tx
.ring
;
922 q_vector
->tx
.ring
= a
->tx_ring
[t_idx
];
923 q_vector
->tx
.count
++;
927 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
928 * @adapter: board private structure to initialize
930 * This function maps descriptor rings to the queue-specific vectors
931 * we were allotted through the MSI-X enabling code. Ideally, we'd have
932 * one vector per ring/queue, but on a constrained vector budget, we
933 * group the rings as "efficiently" as possible. You would add new
934 * mapping configurations in here.
936 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter
*adapter
)
940 int rxr_idx
= 0, txr_idx
= 0;
941 int rxr_remaining
= adapter
->num_rx_queues
;
942 int txr_remaining
= adapter
->num_tx_queues
;
947 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
950 * The ideal configuration...
951 * We have enough vectors to map one per queue.
953 if (q_vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
954 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
955 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
957 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
958 map_vector_to_txq(adapter
, v_start
, txr_idx
);
963 * If we don't have enough vectors for a 1-to-1
964 * mapping, we'll have to group them so there are
965 * multiple queues per vector.
967 /* Re-adjusting *qpv takes care of the remainder. */
968 for (i
= v_start
; i
< q_vectors
; i
++) {
969 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
970 for (j
= 0; j
< rqpv
; j
++) {
971 map_vector_to_rxq(adapter
, i
, rxr_idx
);
976 for (i
= v_start
; i
< q_vectors
; i
++) {
977 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
978 for (j
= 0; j
< tqpv
; j
++) {
979 map_vector_to_txq(adapter
, i
, txr_idx
);
990 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
991 * @adapter: board private structure
993 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
994 * interrupts from the kernel.
996 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter
*adapter
)
998 struct net_device
*netdev
= adapter
->netdev
;
999 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1003 for (vector
= 0; vector
< q_vectors
; vector
++) {
1004 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[vector
];
1005 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
1007 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
1008 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1009 "%s-%s-%d", netdev
->name
, "TxRx", ri
++);
1011 } else if (q_vector
->rx
.ring
) {
1012 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1013 "%s-%s-%d", netdev
->name
, "rx", ri
++);
1014 } else if (q_vector
->tx
.ring
) {
1015 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1016 "%s-%s-%d", netdev
->name
, "tx", ti
++);
1018 /* skip this unused q_vector */
1021 err
= request_irq(entry
->vector
, &ixgbevf_msix_clean_rings
, 0,
1022 q_vector
->name
, q_vector
);
1024 hw_dbg(&adapter
->hw
,
1025 "request_irq failed for MSIX interrupt "
1026 "Error: %d\n", err
);
1027 goto free_queue_irqs
;
1031 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1032 &ixgbevf_msix_other
, 0, netdev
->name
, adapter
);
1034 hw_dbg(&adapter
->hw
,
1035 "request_irq for msix_other failed: %d\n", err
);
1036 goto free_queue_irqs
;
1044 free_irq(adapter
->msix_entries
[vector
].vector
,
1045 adapter
->q_vector
[vector
]);
1047 /* This failure is non-recoverable - it indicates the system is
1048 * out of MSIX vector resources and the VF driver cannot run
1049 * without them. Set the number of msix vectors to zero
1050 * indicating that not enough can be allocated. The error
1051 * will be returned to the user indicating device open failed.
1052 * Any further attempts to force the driver to open will also
1053 * fail. The only way to recover is to unload the driver and
1054 * reload it again. If the system has recovered some MSIX
1055 * vectors then it may succeed.
1057 adapter
->num_msix_vectors
= 0;
1061 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter
*adapter
)
1063 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1065 for (i
= 0; i
< q_vectors
; i
++) {
1066 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[i
];
1067 q_vector
->rx
.ring
= NULL
;
1068 q_vector
->tx
.ring
= NULL
;
1069 q_vector
->rx
.count
= 0;
1070 q_vector
->tx
.count
= 0;
1075 * ixgbevf_request_irq - initialize interrupts
1076 * @adapter: board private structure
1078 * Attempts to configure interrupts using the best available
1079 * capabilities of the hardware and kernel.
1081 static int ixgbevf_request_irq(struct ixgbevf_adapter
*adapter
)
1085 err
= ixgbevf_request_msix_irqs(adapter
);
1088 hw_dbg(&adapter
->hw
,
1089 "request_irq failed, Error %d\n", err
);
1094 static void ixgbevf_free_irq(struct ixgbevf_adapter
*adapter
)
1098 q_vectors
= adapter
->num_msix_vectors
;
1101 free_irq(adapter
->msix_entries
[i
].vector
, adapter
);
1104 for (; i
>= 0; i
--) {
1105 /* free only the irqs that were actually requested */
1106 if (!adapter
->q_vector
[i
]->rx
.ring
&&
1107 !adapter
->q_vector
[i
]->tx
.ring
)
1110 free_irq(adapter
->msix_entries
[i
].vector
,
1111 adapter
->q_vector
[i
]);
1114 ixgbevf_reset_q_vectors(adapter
);
1118 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
1119 * @adapter: board private structure
1121 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter
*adapter
)
1123 struct ixgbe_hw
*hw
= &adapter
->hw
;
1126 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, 0);
1127 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMC
, ~0);
1128 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, 0);
1130 IXGBE_WRITE_FLUSH(hw
);
1132 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
1133 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1137 * ixgbevf_irq_enable - Enable default interrupt generation settings
1138 * @adapter: board private structure
1140 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter
*adapter
)
1142 struct ixgbe_hw
*hw
= &adapter
->hw
;
1144 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAM
, adapter
->eims_enable_mask
);
1145 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, adapter
->eims_enable_mask
);
1146 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, adapter
->eims_enable_mask
);
1150 * ixgbevf_configure_tx_ring - Configure 82599 VF Tx ring after Reset
1151 * @adapter: board private structure
1152 * @ring: structure containing ring specific data
1154 * Configure the Tx descriptor ring after a reset.
1156 static void ixgbevf_configure_tx_ring(struct ixgbevf_adapter
*adapter
,
1157 struct ixgbevf_ring
*ring
)
1159 struct ixgbe_hw
*hw
= &adapter
->hw
;
1160 u64 tdba
= ring
->dma
;
1162 u32 txdctl
= IXGBE_TXDCTL_ENABLE
;
1163 u8 reg_idx
= ring
->reg_idx
;
1165 /* disable queue to avoid issues while updating state */
1166 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(reg_idx
), IXGBE_TXDCTL_SWFLSH
);
1167 IXGBE_WRITE_FLUSH(hw
);
1169 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAL(reg_idx
), tdba
& DMA_BIT_MASK(32));
1170 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAH(reg_idx
), tdba
>> 32);
1171 IXGBE_WRITE_REG(hw
, IXGBE_VFTDLEN(reg_idx
),
1172 ring
->count
* sizeof(union ixgbe_adv_tx_desc
));
1174 /* disable head writeback */
1175 IXGBE_WRITE_REG(hw
, IXGBE_VFTDWBAH(reg_idx
), 0);
1176 IXGBE_WRITE_REG(hw
, IXGBE_VFTDWBAL(reg_idx
), 0);
1178 /* enable relaxed ordering */
1179 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_TXCTRL(reg_idx
),
1180 (IXGBE_DCA_TXCTRL_DESC_RRO_EN
|
1181 IXGBE_DCA_TXCTRL_DATA_RRO_EN
));
1183 /* reset head and tail pointers */
1184 IXGBE_WRITE_REG(hw
, IXGBE_VFTDH(reg_idx
), 0);
1185 IXGBE_WRITE_REG(hw
, IXGBE_VFTDT(reg_idx
), 0);
1186 ring
->tail
= adapter
->io_addr
+ IXGBE_VFTDT(reg_idx
);
1188 /* reset ntu and ntc to place SW in sync with hardwdare */
1189 ring
->next_to_clean
= 0;
1190 ring
->next_to_use
= 0;
1192 /* In order to avoid issues WTHRESH + PTHRESH should always be equal
1193 * to or less than the number of on chip descriptors, which is
1196 txdctl
|= (8 << 16); /* WTHRESH = 8 */
1198 /* Setting PTHRESH to 32 both improves performance */
1199 txdctl
|= (1 << 8) | /* HTHRESH = 1 */
1200 32; /* PTHRESH = 32 */
1202 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(reg_idx
), txdctl
);
1204 /* poll to verify queue is enabled */
1206 usleep_range(1000, 2000);
1207 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(reg_idx
));
1208 } while (--wait_loop
&& !(txdctl
& IXGBE_TXDCTL_ENABLE
));
1210 pr_err("Could not enable Tx Queue %d\n", reg_idx
);
1214 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1215 * @adapter: board private structure
1217 * Configure the Tx unit of the MAC after a reset.
1219 static void ixgbevf_configure_tx(struct ixgbevf_adapter
*adapter
)
1223 /* Setup the HW Tx Head and Tail descriptor pointers */
1224 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1225 ixgbevf_configure_tx_ring(adapter
, adapter
->tx_ring
[i
]);
1228 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1230 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter
*adapter
, int index
)
1232 struct ixgbevf_ring
*rx_ring
;
1233 struct ixgbe_hw
*hw
= &adapter
->hw
;
1236 rx_ring
= adapter
->rx_ring
[index
];
1238 srrctl
= IXGBE_SRRCTL_DROP_EN
;
1240 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1242 srrctl
|= ALIGN(rx_ring
->rx_buf_len
, 1024) >>
1243 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1245 IXGBE_WRITE_REG(hw
, IXGBE_VFSRRCTL(index
), srrctl
);
1248 static void ixgbevf_setup_psrtype(struct ixgbevf_adapter
*adapter
)
1250 struct ixgbe_hw
*hw
= &adapter
->hw
;
1252 /* PSRTYPE must be initialized in 82599 */
1253 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
| IXGBE_PSRTYPE_UDPHDR
|
1254 IXGBE_PSRTYPE_IPV4HDR
| IXGBE_PSRTYPE_IPV6HDR
|
1255 IXGBE_PSRTYPE_L2HDR
;
1257 if (adapter
->num_rx_queues
> 1)
1260 IXGBE_WRITE_REG(hw
, IXGBE_VFPSRTYPE
, psrtype
);
1263 static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter
*adapter
)
1265 struct ixgbe_hw
*hw
= &adapter
->hw
;
1266 struct net_device
*netdev
= adapter
->netdev
;
1267 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1271 /* notify the PF of our intent to use this size of frame */
1272 ixgbevf_rlpml_set_vf(hw
, max_frame
);
1274 /* PF will allow an extra 4 bytes past for vlan tagged frames */
1275 max_frame
+= VLAN_HLEN
;
1278 * Allocate buffer sizes that fit well into 32K and
1279 * take into account max frame size of 9.5K
1281 if ((hw
->mac
.type
== ixgbe_mac_X540_vf
) &&
1282 (max_frame
<= MAXIMUM_ETHERNET_VLAN_SIZE
))
1283 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1284 else if (max_frame
<= IXGBEVF_RXBUFFER_2K
)
1285 rx_buf_len
= IXGBEVF_RXBUFFER_2K
;
1286 else if (max_frame
<= IXGBEVF_RXBUFFER_4K
)
1287 rx_buf_len
= IXGBEVF_RXBUFFER_4K
;
1288 else if (max_frame
<= IXGBEVF_RXBUFFER_8K
)
1289 rx_buf_len
= IXGBEVF_RXBUFFER_8K
;
1291 rx_buf_len
= IXGBEVF_RXBUFFER_10K
;
1293 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1294 adapter
->rx_ring
[i
]->rx_buf_len
= rx_buf_len
;
1297 #define IXGBEVF_MAX_RX_DESC_POLL 10
1298 static void ixgbevf_disable_rx_queue(struct ixgbevf_adapter
*adapter
,
1299 struct ixgbevf_ring
*ring
)
1301 struct ixgbe_hw
*hw
= &adapter
->hw
;
1302 int wait_loop
= IXGBEVF_MAX_RX_DESC_POLL
;
1304 u8 reg_idx
= ring
->reg_idx
;
1306 if (IXGBE_REMOVED(hw
->hw_addr
))
1308 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1309 rxdctl
&= ~IXGBE_RXDCTL_ENABLE
;
1311 /* write value back with RXDCTL.ENABLE bit cleared */
1312 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(reg_idx
), rxdctl
);
1314 /* the hardware may take up to 100us to really disable the rx queue */
1317 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1318 } while (--wait_loop
&& (rxdctl
& IXGBE_RXDCTL_ENABLE
));
1321 pr_err("RXDCTL.ENABLE queue %d not cleared while polling\n",
1325 static void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter
*adapter
,
1326 struct ixgbevf_ring
*ring
)
1328 struct ixgbe_hw
*hw
= &adapter
->hw
;
1329 int wait_loop
= IXGBEVF_MAX_RX_DESC_POLL
;
1331 u8 reg_idx
= ring
->reg_idx
;
1333 if (IXGBE_REMOVED(hw
->hw_addr
))
1336 usleep_range(1000, 2000);
1337 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1338 } while (--wait_loop
&& !(rxdctl
& IXGBE_RXDCTL_ENABLE
));
1341 pr_err("RXDCTL.ENABLE queue %d not set while polling\n",
1345 static void ixgbevf_configure_rx_ring(struct ixgbevf_adapter
*adapter
,
1346 struct ixgbevf_ring
*ring
)
1348 struct ixgbe_hw
*hw
= &adapter
->hw
;
1349 u64 rdba
= ring
->dma
;
1351 u8 reg_idx
= ring
->reg_idx
;
1353 /* disable queue to avoid issues while updating state */
1354 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(reg_idx
));
1355 ixgbevf_disable_rx_queue(adapter
, ring
);
1357 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAL(reg_idx
), rdba
& DMA_BIT_MASK(32));
1358 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAH(reg_idx
), rdba
>> 32);
1359 IXGBE_WRITE_REG(hw
, IXGBE_VFRDLEN(reg_idx
),
1360 ring
->count
* sizeof(union ixgbe_adv_rx_desc
));
1362 /* enable relaxed ordering */
1363 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_RXCTRL(reg_idx
),
1364 IXGBE_DCA_RXCTRL_DESC_RRO_EN
);
1366 /* reset head and tail pointers */
1367 IXGBE_WRITE_REG(hw
, IXGBE_VFRDH(reg_idx
), 0);
1368 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(reg_idx
), 0);
1369 ring
->tail
= adapter
->io_addr
+ IXGBE_VFRDT(reg_idx
);
1371 /* reset ntu and ntc to place SW in sync with hardwdare */
1372 ring
->next_to_clean
= 0;
1373 ring
->next_to_use
= 0;
1375 ixgbevf_configure_srrctl(adapter
, reg_idx
);
1377 /* prevent DMA from exceeding buffer space available */
1378 rxdctl
&= ~IXGBE_RXDCTL_RLPMLMASK
;
1379 rxdctl
|= ring
->rx_buf_len
| IXGBE_RXDCTL_RLPML_EN
;
1380 rxdctl
|= IXGBE_RXDCTL_ENABLE
| IXGBE_RXDCTL_VME
;
1381 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(reg_idx
), rxdctl
);
1383 ixgbevf_rx_desc_queue_enable(adapter
, ring
);
1384 ixgbevf_alloc_rx_buffers(ring
, ixgbevf_desc_unused(ring
));
1388 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1389 * @adapter: board private structure
1391 * Configure the Rx unit of the MAC after a reset.
1393 static void ixgbevf_configure_rx(struct ixgbevf_adapter
*adapter
)
1397 ixgbevf_setup_psrtype(adapter
);
1399 /* set_rx_buffer_len must be called before ring initialization */
1400 ixgbevf_set_rx_buffer_len(adapter
);
1402 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1403 * the Base and Length of the Rx Descriptor Ring */
1404 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1405 ixgbevf_configure_rx_ring(adapter
, adapter
->rx_ring
[i
]);
1408 static int ixgbevf_vlan_rx_add_vid(struct net_device
*netdev
,
1409 __be16 proto
, u16 vid
)
1411 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1412 struct ixgbe_hw
*hw
= &adapter
->hw
;
1415 spin_lock_bh(&adapter
->mbx_lock
);
1417 /* add VID to filter table */
1418 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, true);
1420 spin_unlock_bh(&adapter
->mbx_lock
);
1422 /* translate error return types so error makes sense */
1423 if (err
== IXGBE_ERR_MBX
)
1426 if (err
== IXGBE_ERR_INVALID_ARGUMENT
)
1429 set_bit(vid
, adapter
->active_vlans
);
1434 static int ixgbevf_vlan_rx_kill_vid(struct net_device
*netdev
,
1435 __be16 proto
, u16 vid
)
1437 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1438 struct ixgbe_hw
*hw
= &adapter
->hw
;
1439 int err
= -EOPNOTSUPP
;
1441 spin_lock_bh(&adapter
->mbx_lock
);
1443 /* remove VID from filter table */
1444 err
= hw
->mac
.ops
.set_vfta(hw
, vid
, 0, false);
1446 spin_unlock_bh(&adapter
->mbx_lock
);
1448 clear_bit(vid
, adapter
->active_vlans
);
1453 static void ixgbevf_restore_vlan(struct ixgbevf_adapter
*adapter
)
1457 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
1458 ixgbevf_vlan_rx_add_vid(adapter
->netdev
,
1459 htons(ETH_P_8021Q
), vid
);
1462 static int ixgbevf_write_uc_addr_list(struct net_device
*netdev
)
1464 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1465 struct ixgbe_hw
*hw
= &adapter
->hw
;
1468 if ((netdev_uc_count(netdev
)) > 10) {
1469 pr_err("Too many unicast filters - No Space\n");
1473 if (!netdev_uc_empty(netdev
)) {
1474 struct netdev_hw_addr
*ha
;
1475 netdev_for_each_uc_addr(ha
, netdev
) {
1476 hw
->mac
.ops
.set_uc_addr(hw
, ++count
, ha
->addr
);
1481 * If the list is empty then send message to PF driver to
1482 * clear all macvlans on this VF.
1484 hw
->mac
.ops
.set_uc_addr(hw
, 0, NULL
);
1491 * ixgbevf_set_rx_mode - Multicast and unicast set
1492 * @netdev: network interface device structure
1494 * The set_rx_method entry point is called whenever the multicast address
1495 * list, unicast address list or the network interface flags are updated.
1496 * This routine is responsible for configuring the hardware for proper
1497 * multicast mode and configuring requested unicast filters.
1499 static void ixgbevf_set_rx_mode(struct net_device
*netdev
)
1501 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1502 struct ixgbe_hw
*hw
= &adapter
->hw
;
1504 spin_lock_bh(&adapter
->mbx_lock
);
1506 /* reprogram multicast list */
1507 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
1509 ixgbevf_write_uc_addr_list(netdev
);
1511 spin_unlock_bh(&adapter
->mbx_lock
);
1514 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter
*adapter
)
1517 struct ixgbevf_q_vector
*q_vector
;
1518 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1520 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1521 q_vector
= adapter
->q_vector
[q_idx
];
1522 #ifdef CONFIG_NET_RX_BUSY_POLL
1523 ixgbevf_qv_init_lock(adapter
->q_vector
[q_idx
]);
1525 napi_enable(&q_vector
->napi
);
1529 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter
*adapter
)
1532 struct ixgbevf_q_vector
*q_vector
;
1533 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1535 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1536 q_vector
= adapter
->q_vector
[q_idx
];
1537 napi_disable(&q_vector
->napi
);
1538 #ifdef CONFIG_NET_RX_BUSY_POLL
1539 while (!ixgbevf_qv_disable(adapter
->q_vector
[q_idx
])) {
1540 pr_info("QV %d locked\n", q_idx
);
1541 usleep_range(1000, 20000);
1543 #endif /* CONFIG_NET_RX_BUSY_POLL */
1547 static int ixgbevf_configure_dcb(struct ixgbevf_adapter
*adapter
)
1549 struct ixgbe_hw
*hw
= &adapter
->hw
;
1550 unsigned int def_q
= 0;
1551 unsigned int num_tcs
= 0;
1552 unsigned int num_rx_queues
= 1;
1555 spin_lock_bh(&adapter
->mbx_lock
);
1557 /* fetch queue configuration from the PF */
1558 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
1560 spin_unlock_bh(&adapter
->mbx_lock
);
1566 /* update default Tx ring register index */
1567 adapter
->tx_ring
[0]->reg_idx
= def_q
;
1569 /* we need as many queues as traffic classes */
1570 num_rx_queues
= num_tcs
;
1573 /* if we have a bad config abort request queue reset */
1574 if (adapter
->num_rx_queues
!= num_rx_queues
) {
1575 /* force mailbox timeout to prevent further messages */
1576 hw
->mbx
.timeout
= 0;
1578 /* wait for watchdog to come around and bail us out */
1579 adapter
->flags
|= IXGBEVF_FLAG_QUEUE_RESET_REQUESTED
;
1585 static void ixgbevf_configure(struct ixgbevf_adapter
*adapter
)
1587 ixgbevf_configure_dcb(adapter
);
1589 ixgbevf_set_rx_mode(adapter
->netdev
);
1591 ixgbevf_restore_vlan(adapter
);
1593 ixgbevf_configure_tx(adapter
);
1594 ixgbevf_configure_rx(adapter
);
1597 static void ixgbevf_save_reset_stats(struct ixgbevf_adapter
*adapter
)
1599 /* Only save pre-reset stats if there are some */
1600 if (adapter
->stats
.vfgprc
|| adapter
->stats
.vfgptc
) {
1601 adapter
->stats
.saved_reset_vfgprc
+= adapter
->stats
.vfgprc
-
1602 adapter
->stats
.base_vfgprc
;
1603 adapter
->stats
.saved_reset_vfgptc
+= adapter
->stats
.vfgptc
-
1604 adapter
->stats
.base_vfgptc
;
1605 adapter
->stats
.saved_reset_vfgorc
+= adapter
->stats
.vfgorc
-
1606 adapter
->stats
.base_vfgorc
;
1607 adapter
->stats
.saved_reset_vfgotc
+= adapter
->stats
.vfgotc
-
1608 adapter
->stats
.base_vfgotc
;
1609 adapter
->stats
.saved_reset_vfmprc
+= adapter
->stats
.vfmprc
-
1610 adapter
->stats
.base_vfmprc
;
1614 static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter
*adapter
)
1616 struct ixgbe_hw
*hw
= &adapter
->hw
;
1618 adapter
->stats
.last_vfgprc
= IXGBE_READ_REG(hw
, IXGBE_VFGPRC
);
1619 adapter
->stats
.last_vfgorc
= IXGBE_READ_REG(hw
, IXGBE_VFGORC_LSB
);
1620 adapter
->stats
.last_vfgorc
|=
1621 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGORC_MSB
))) << 32);
1622 adapter
->stats
.last_vfgptc
= IXGBE_READ_REG(hw
, IXGBE_VFGPTC
);
1623 adapter
->stats
.last_vfgotc
= IXGBE_READ_REG(hw
, IXGBE_VFGOTC_LSB
);
1624 adapter
->stats
.last_vfgotc
|=
1625 (((u64
)(IXGBE_READ_REG(hw
, IXGBE_VFGOTC_MSB
))) << 32);
1626 adapter
->stats
.last_vfmprc
= IXGBE_READ_REG(hw
, IXGBE_VFMPRC
);
1628 adapter
->stats
.base_vfgprc
= adapter
->stats
.last_vfgprc
;
1629 adapter
->stats
.base_vfgorc
= adapter
->stats
.last_vfgorc
;
1630 adapter
->stats
.base_vfgptc
= adapter
->stats
.last_vfgptc
;
1631 adapter
->stats
.base_vfgotc
= adapter
->stats
.last_vfgotc
;
1632 adapter
->stats
.base_vfmprc
= adapter
->stats
.last_vfmprc
;
1635 static void ixgbevf_negotiate_api(struct ixgbevf_adapter
*adapter
)
1637 struct ixgbe_hw
*hw
= &adapter
->hw
;
1638 int api
[] = { ixgbe_mbox_api_11
,
1640 ixgbe_mbox_api_unknown
};
1641 int err
= 0, idx
= 0;
1643 spin_lock_bh(&adapter
->mbx_lock
);
1645 while (api
[idx
] != ixgbe_mbox_api_unknown
) {
1646 err
= ixgbevf_negotiate_api_version(hw
, api
[idx
]);
1652 spin_unlock_bh(&adapter
->mbx_lock
);
1655 static void ixgbevf_up_complete(struct ixgbevf_adapter
*adapter
)
1657 struct net_device
*netdev
= adapter
->netdev
;
1658 struct ixgbe_hw
*hw
= &adapter
->hw
;
1660 ixgbevf_configure_msix(adapter
);
1662 spin_lock_bh(&adapter
->mbx_lock
);
1664 if (is_valid_ether_addr(hw
->mac
.addr
))
1665 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
1667 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.perm_addr
, 0);
1669 spin_unlock_bh(&adapter
->mbx_lock
);
1671 smp_mb__before_atomic();
1672 clear_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1673 ixgbevf_napi_enable_all(adapter
);
1675 /* enable transmits */
1676 netif_tx_start_all_queues(netdev
);
1678 ixgbevf_save_reset_stats(adapter
);
1679 ixgbevf_init_last_counter_stats(adapter
);
1681 hw
->mac
.get_link_status
= 1;
1682 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1685 void ixgbevf_up(struct ixgbevf_adapter
*adapter
)
1687 struct ixgbe_hw
*hw
= &adapter
->hw
;
1689 ixgbevf_configure(adapter
);
1691 ixgbevf_up_complete(adapter
);
1693 /* clear any pending interrupts, may auto mask */
1694 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
1696 ixgbevf_irq_enable(adapter
);
1700 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1701 * @rx_ring: ring to free buffers from
1703 static void ixgbevf_clean_rx_ring(struct ixgbevf_ring
*rx_ring
)
1708 if (!rx_ring
->rx_buffer_info
)
1711 /* Free all the Rx ring sk_buffs */
1712 for (i
= 0; i
< rx_ring
->count
; i
++) {
1713 struct ixgbevf_rx_buffer
*rx_buffer_info
;
1715 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
1716 if (rx_buffer_info
->dma
) {
1717 dma_unmap_single(rx_ring
->dev
, rx_buffer_info
->dma
,
1718 rx_ring
->rx_buf_len
,
1720 rx_buffer_info
->dma
= 0;
1722 if (rx_buffer_info
->skb
) {
1723 struct sk_buff
*skb
= rx_buffer_info
->skb
;
1724 rx_buffer_info
->skb
= NULL
;
1726 struct sk_buff
*this = skb
;
1727 skb
= IXGBE_CB(skb
)->prev
;
1728 dev_kfree_skb(this);
1733 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
1734 memset(rx_ring
->rx_buffer_info
, 0, size
);
1736 /* Zero out the descriptor ring */
1737 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1741 * ixgbevf_clean_tx_ring - Free Tx Buffers
1742 * @tx_ring: ring to be cleaned
1744 static void ixgbevf_clean_tx_ring(struct ixgbevf_ring
*tx_ring
)
1746 struct ixgbevf_tx_buffer
*tx_buffer_info
;
1750 if (!tx_ring
->tx_buffer_info
)
1753 /* Free all the Tx ring sk_buffs */
1754 for (i
= 0; i
< tx_ring
->count
; i
++) {
1755 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
1756 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
1759 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
1760 memset(tx_ring
->tx_buffer_info
, 0, size
);
1762 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1766 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1767 * @adapter: board private structure
1769 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter
*adapter
)
1773 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1774 ixgbevf_clean_rx_ring(adapter
->rx_ring
[i
]);
1778 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1779 * @adapter: board private structure
1781 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter
*adapter
)
1785 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1786 ixgbevf_clean_tx_ring(adapter
->tx_ring
[i
]);
1789 void ixgbevf_down(struct ixgbevf_adapter
*adapter
)
1791 struct net_device
*netdev
= adapter
->netdev
;
1792 struct ixgbe_hw
*hw
= &adapter
->hw
;
1795 /* signal that we are down to the interrupt handler */
1796 if (test_and_set_bit(__IXGBEVF_DOWN
, &adapter
->state
))
1797 return; /* do nothing if already down */
1799 /* disable all enabled rx queues */
1800 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1801 ixgbevf_disable_rx_queue(adapter
, adapter
->rx_ring
[i
]);
1803 netif_tx_disable(netdev
);
1807 netif_tx_stop_all_queues(netdev
);
1809 ixgbevf_irq_disable(adapter
);
1811 ixgbevf_napi_disable_all(adapter
);
1813 del_timer_sync(&adapter
->watchdog_timer
);
1814 /* can't call flush scheduled work here because it can deadlock
1815 * if linkwatch_event tries to acquire the rtnl_lock which we are
1817 while (adapter
->flags
& IXGBE_FLAG_IN_WATCHDOG_TASK
)
1820 /* disable transmits in the hardware now that interrupts are off */
1821 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1822 u8 reg_idx
= adapter
->tx_ring
[i
]->reg_idx
;
1824 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(reg_idx
),
1825 IXGBE_TXDCTL_SWFLSH
);
1828 netif_carrier_off(netdev
);
1830 if (!pci_channel_offline(adapter
->pdev
))
1831 ixgbevf_reset(adapter
);
1833 ixgbevf_clean_all_tx_rings(adapter
);
1834 ixgbevf_clean_all_rx_rings(adapter
);
1837 void ixgbevf_reinit_locked(struct ixgbevf_adapter
*adapter
)
1839 WARN_ON(in_interrupt());
1841 while (test_and_set_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
1844 ixgbevf_down(adapter
);
1845 ixgbevf_up(adapter
);
1847 clear_bit(__IXGBEVF_RESETTING
, &adapter
->state
);
1850 void ixgbevf_reset(struct ixgbevf_adapter
*adapter
)
1852 struct ixgbe_hw
*hw
= &adapter
->hw
;
1853 struct net_device
*netdev
= adapter
->netdev
;
1855 if (hw
->mac
.ops
.reset_hw(hw
)) {
1856 hw_dbg(hw
, "PF still resetting\n");
1858 hw
->mac
.ops
.init_hw(hw
);
1859 ixgbevf_negotiate_api(adapter
);
1862 if (is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
1863 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
1865 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
,
1870 static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter
*adapter
,
1873 int vector_threshold
;
1875 /* We'll want at least 2 (vector_threshold):
1876 * 1) TxQ[0] + RxQ[0] handler
1877 * 2) Other (Link Status Change, etc.)
1879 vector_threshold
= MIN_MSIX_COUNT
;
1881 /* The more we get, the more we will assign to Tx/Rx Cleanup
1882 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1883 * Right now, we simply care about how many we'll get; we'll
1884 * set them up later while requesting irq's.
1886 vectors
= pci_enable_msix_range(adapter
->pdev
, adapter
->msix_entries
,
1887 vector_threshold
, vectors
);
1890 dev_err(&adapter
->pdev
->dev
,
1891 "Unable to allocate MSI-X interrupts\n");
1892 kfree(adapter
->msix_entries
);
1893 adapter
->msix_entries
= NULL
;
1897 /* Adjust for only the vectors we'll use, which is minimum
1898 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1899 * vectors we were allocated.
1901 adapter
->num_msix_vectors
= vectors
;
1907 * ixgbevf_set_num_queues - Allocate queues for device, feature dependent
1908 * @adapter: board private structure to initialize
1910 * This is the top level queue allocation routine. The order here is very
1911 * important, starting with the "most" number of features turned on at once,
1912 * and ending with the smallest set of features. This way large combinations
1913 * can be allocated if they're turned on, and smaller combinations are the
1914 * fallthrough conditions.
1917 static void ixgbevf_set_num_queues(struct ixgbevf_adapter
*adapter
)
1919 struct ixgbe_hw
*hw
= &adapter
->hw
;
1920 unsigned int def_q
= 0;
1921 unsigned int num_tcs
= 0;
1924 /* Start with base case */
1925 adapter
->num_rx_queues
= 1;
1926 adapter
->num_tx_queues
= 1;
1928 spin_lock_bh(&adapter
->mbx_lock
);
1930 /* fetch queue configuration from the PF */
1931 err
= ixgbevf_get_queues(hw
, &num_tcs
, &def_q
);
1933 spin_unlock_bh(&adapter
->mbx_lock
);
1938 /* we need as many queues as traffic classes */
1940 adapter
->num_rx_queues
= num_tcs
;
1944 * ixgbevf_alloc_queues - Allocate memory for all rings
1945 * @adapter: board private structure to initialize
1947 * We allocate one ring per queue at run-time since we don't know the
1948 * number of queues at compile-time. The polling_netdev array is
1949 * intended for Multiqueue, but should work fine with a single queue.
1951 static int ixgbevf_alloc_queues(struct ixgbevf_adapter
*adapter
)
1953 struct ixgbevf_ring
*ring
;
1956 for (; tx
< adapter
->num_tx_queues
; tx
++) {
1957 ring
= kzalloc(sizeof(*ring
), GFP_KERNEL
);
1959 goto err_allocation
;
1961 ring
->dev
= &adapter
->pdev
->dev
;
1962 ring
->netdev
= adapter
->netdev
;
1963 ring
->count
= adapter
->tx_ring_count
;
1964 ring
->queue_index
= tx
;
1967 adapter
->tx_ring
[tx
] = ring
;
1970 for (; rx
< adapter
->num_rx_queues
; rx
++) {
1971 ring
= kzalloc(sizeof(*ring
), GFP_KERNEL
);
1973 goto err_allocation
;
1975 ring
->dev
= &adapter
->pdev
->dev
;
1976 ring
->netdev
= adapter
->netdev
;
1978 ring
->count
= adapter
->rx_ring_count
;
1979 ring
->queue_index
= rx
;
1982 adapter
->rx_ring
[rx
] = ring
;
1989 kfree(adapter
->tx_ring
[--tx
]);
1990 adapter
->tx_ring
[tx
] = NULL
;
1994 kfree(adapter
->rx_ring
[--rx
]);
1995 adapter
->rx_ring
[rx
] = NULL
;
2001 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
2002 * @adapter: board private structure to initialize
2004 * Attempt to configure the interrupts using the best available
2005 * capabilities of the hardware and the kernel.
2007 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter
*adapter
)
2009 struct net_device
*netdev
= adapter
->netdev
;
2011 int vector
, v_budget
;
2014 * It's easy to be greedy for MSI-X vectors, but it really
2015 * doesn't do us much good if we have a lot more vectors
2016 * than CPU's. So let's be conservative and only ask for
2017 * (roughly) the same number of vectors as there are CPU's.
2018 * The default is to use pairs of vectors.
2020 v_budget
= max(adapter
->num_rx_queues
, adapter
->num_tx_queues
);
2021 v_budget
= min_t(int, v_budget
, num_online_cpus());
2022 v_budget
+= NON_Q_VECTORS
;
2024 /* A failure in MSI-X entry allocation isn't fatal, but it does
2025 * mean we disable MSI-X capabilities of the adapter. */
2026 adapter
->msix_entries
= kcalloc(v_budget
,
2027 sizeof(struct msix_entry
), GFP_KERNEL
);
2028 if (!adapter
->msix_entries
) {
2033 for (vector
= 0; vector
< v_budget
; vector
++)
2034 adapter
->msix_entries
[vector
].entry
= vector
;
2036 err
= ixgbevf_acquire_msix_vectors(adapter
, v_budget
);
2040 err
= netif_set_real_num_tx_queues(netdev
, adapter
->num_tx_queues
);
2044 err
= netif_set_real_num_rx_queues(netdev
, adapter
->num_rx_queues
);
2051 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
2052 * @adapter: board private structure to initialize
2054 * We allocate one q_vector per queue interrupt. If allocation fails we
2057 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter
*adapter
)
2059 int q_idx
, num_q_vectors
;
2060 struct ixgbevf_q_vector
*q_vector
;
2062 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2064 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
2065 q_vector
= kzalloc(sizeof(struct ixgbevf_q_vector
), GFP_KERNEL
);
2068 q_vector
->adapter
= adapter
;
2069 q_vector
->v_idx
= q_idx
;
2070 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
2072 #ifdef CONFIG_NET_RX_BUSY_POLL
2073 napi_hash_add(&q_vector
->napi
);
2075 adapter
->q_vector
[q_idx
] = q_vector
;
2083 q_vector
= adapter
->q_vector
[q_idx
];
2084 #ifdef CONFIG_NET_RX_BUSY_POLL
2085 napi_hash_del(&q_vector
->napi
);
2087 netif_napi_del(&q_vector
->napi
);
2089 adapter
->q_vector
[q_idx
] = NULL
;
2095 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
2096 * @adapter: board private structure to initialize
2098 * This function frees the memory allocated to the q_vectors. In addition if
2099 * NAPI is enabled it will delete any references to the NAPI struct prior
2100 * to freeing the q_vector.
2102 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter
*adapter
)
2104 int q_idx
, num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2106 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
2107 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
2109 adapter
->q_vector
[q_idx
] = NULL
;
2110 #ifdef CONFIG_NET_RX_BUSY_POLL
2111 napi_hash_del(&q_vector
->napi
);
2113 netif_napi_del(&q_vector
->napi
);
2119 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
2120 * @adapter: board private structure
2123 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter
*adapter
)
2125 pci_disable_msix(adapter
->pdev
);
2126 kfree(adapter
->msix_entries
);
2127 adapter
->msix_entries
= NULL
;
2131 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
2132 * @adapter: board private structure to initialize
2135 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2139 /* Number of supported queues */
2140 ixgbevf_set_num_queues(adapter
);
2142 err
= ixgbevf_set_interrupt_capability(adapter
);
2144 hw_dbg(&adapter
->hw
,
2145 "Unable to setup interrupt capabilities\n");
2146 goto err_set_interrupt
;
2149 err
= ixgbevf_alloc_q_vectors(adapter
);
2151 hw_dbg(&adapter
->hw
, "Unable to allocate memory for queue "
2153 goto err_alloc_q_vectors
;
2156 err
= ixgbevf_alloc_queues(adapter
);
2158 pr_err("Unable to allocate memory for queues\n");
2159 goto err_alloc_queues
;
2162 hw_dbg(&adapter
->hw
, "Multiqueue %s: Rx Queue count = %u, "
2163 "Tx Queue count = %u\n",
2164 (adapter
->num_rx_queues
> 1) ? "Enabled" :
2165 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
2167 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2171 ixgbevf_free_q_vectors(adapter
);
2172 err_alloc_q_vectors
:
2173 ixgbevf_reset_interrupt_capability(adapter
);
2179 * ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings
2180 * @adapter: board private structure to clear interrupt scheme on
2182 * We go through and clear interrupt specific resources and reset the structure
2183 * to pre-load conditions
2185 static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2189 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2190 kfree(adapter
->tx_ring
[i
]);
2191 adapter
->tx_ring
[i
] = NULL
;
2193 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2194 kfree(adapter
->rx_ring
[i
]);
2195 adapter
->rx_ring
[i
] = NULL
;
2198 adapter
->num_tx_queues
= 0;
2199 adapter
->num_rx_queues
= 0;
2201 ixgbevf_free_q_vectors(adapter
);
2202 ixgbevf_reset_interrupt_capability(adapter
);
2206 * ixgbevf_sw_init - Initialize general software structures
2207 * (struct ixgbevf_adapter)
2208 * @adapter: board private structure to initialize
2210 * ixgbevf_sw_init initializes the Adapter private data structure.
2211 * Fields are initialized based on PCI device information and
2212 * OS network device settings (MTU size).
2214 static int ixgbevf_sw_init(struct ixgbevf_adapter
*adapter
)
2216 struct ixgbe_hw
*hw
= &adapter
->hw
;
2217 struct pci_dev
*pdev
= adapter
->pdev
;
2218 struct net_device
*netdev
= adapter
->netdev
;
2221 /* PCI config space info */
2223 hw
->vendor_id
= pdev
->vendor
;
2224 hw
->device_id
= pdev
->device
;
2225 hw
->revision_id
= pdev
->revision
;
2226 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2227 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2229 hw
->mbx
.ops
.init_params(hw
);
2231 /* assume legacy case in which PF would only give VF 2 queues */
2232 hw
->mac
.max_tx_queues
= 2;
2233 hw
->mac
.max_rx_queues
= 2;
2235 /* lock to protect mailbox accesses */
2236 spin_lock_init(&adapter
->mbx_lock
);
2238 err
= hw
->mac
.ops
.reset_hw(hw
);
2240 dev_info(&pdev
->dev
,
2241 "PF still in reset state. Is the PF interface up?\n");
2243 err
= hw
->mac
.ops
.init_hw(hw
);
2245 pr_err("init_shared_code failed: %d\n", err
);
2248 ixgbevf_negotiate_api(adapter
);
2249 err
= hw
->mac
.ops
.get_mac_addr(hw
, hw
->mac
.addr
);
2251 dev_info(&pdev
->dev
, "Error reading MAC address\n");
2252 else if (is_zero_ether_addr(adapter
->hw
.mac
.addr
))
2253 dev_info(&pdev
->dev
,
2254 "MAC address not assigned by administrator.\n");
2255 memcpy(netdev
->dev_addr
, hw
->mac
.addr
, netdev
->addr_len
);
2258 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
2259 dev_info(&pdev
->dev
, "Assigning random MAC address\n");
2260 eth_hw_addr_random(netdev
);
2261 memcpy(hw
->mac
.addr
, netdev
->dev_addr
, netdev
->addr_len
);
2264 /* Enable dynamic interrupt throttling rates */
2265 adapter
->rx_itr_setting
= 1;
2266 adapter
->tx_itr_setting
= 1;
2268 /* set default ring sizes */
2269 adapter
->tx_ring_count
= IXGBEVF_DEFAULT_TXD
;
2270 adapter
->rx_ring_count
= IXGBEVF_DEFAULT_RXD
;
2272 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2279 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2281 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2282 if (current_counter < last_counter) \
2283 counter += 0x100000000LL; \
2284 last_counter = current_counter; \
2285 counter &= 0xFFFFFFFF00000000LL; \
2286 counter |= current_counter; \
2289 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2291 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2292 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2293 u64 current_counter = (current_counter_msb << 32) | \
2294 current_counter_lsb; \
2295 if (current_counter < last_counter) \
2296 counter += 0x1000000000LL; \
2297 last_counter = current_counter; \
2298 counter &= 0xFFFFFFF000000000LL; \
2299 counter |= current_counter; \
2302 * ixgbevf_update_stats - Update the board statistics counters.
2303 * @adapter: board private structure
2305 void ixgbevf_update_stats(struct ixgbevf_adapter
*adapter
)
2307 struct ixgbe_hw
*hw
= &adapter
->hw
;
2310 if (!adapter
->link_up
)
2313 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC
, adapter
->stats
.last_vfgprc
,
2314 adapter
->stats
.vfgprc
);
2315 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC
, adapter
->stats
.last_vfgptc
,
2316 adapter
->stats
.vfgptc
);
2317 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB
, IXGBE_VFGORC_MSB
,
2318 adapter
->stats
.last_vfgorc
,
2319 adapter
->stats
.vfgorc
);
2320 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB
, IXGBE_VFGOTC_MSB
,
2321 adapter
->stats
.last_vfgotc
,
2322 adapter
->stats
.vfgotc
);
2323 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC
, adapter
->stats
.last_vfmprc
,
2324 adapter
->stats
.vfmprc
);
2326 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2327 adapter
->hw_csum_rx_error
+=
2328 adapter
->rx_ring
[i
]->hw_csum_rx_error
;
2329 adapter
->rx_ring
[i
]->hw_csum_rx_error
= 0;
2334 * ixgbevf_watchdog - Timer Call-back
2335 * @data: pointer to adapter cast into an unsigned long
2337 static void ixgbevf_watchdog(unsigned long data
)
2339 struct ixgbevf_adapter
*adapter
= (struct ixgbevf_adapter
*)data
;
2340 struct ixgbe_hw
*hw
= &adapter
->hw
;
2345 * Do the watchdog outside of interrupt context due to the lovely
2346 * delays that some of the newer hardware requires
2349 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2350 goto watchdog_short_circuit
;
2352 /* get one bit for every active tx/rx interrupt vector */
2353 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
2354 struct ixgbevf_q_vector
*qv
= adapter
->q_vector
[i
];
2355 if (qv
->rx
.ring
|| qv
->tx
.ring
)
2359 IXGBE_WRITE_REG(hw
, IXGBE_VTEICS
, eics
);
2361 watchdog_short_circuit
:
2362 schedule_work(&adapter
->watchdog_task
);
2366 * ixgbevf_tx_timeout - Respond to a Tx Hang
2367 * @netdev: network interface device structure
2369 static void ixgbevf_tx_timeout(struct net_device
*netdev
)
2371 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2373 /* Do the reset outside of interrupt context */
2374 schedule_work(&adapter
->reset_task
);
2377 static void ixgbevf_reset_task(struct work_struct
*work
)
2379 struct ixgbevf_adapter
*adapter
;
2380 adapter
= container_of(work
, struct ixgbevf_adapter
, reset_task
);
2382 /* If we're already down or resetting, just bail */
2383 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2384 test_bit(__IXGBEVF_REMOVING
, &adapter
->state
) ||
2385 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2388 adapter
->tx_timeout_count
++;
2390 ixgbevf_reinit_locked(adapter
);
2394 * ixgbevf_watchdog_task - worker thread to bring link up
2395 * @work: pointer to work_struct containing our data
2397 static void ixgbevf_watchdog_task(struct work_struct
*work
)
2399 struct ixgbevf_adapter
*adapter
= container_of(work
,
2400 struct ixgbevf_adapter
,
2402 struct net_device
*netdev
= adapter
->netdev
;
2403 struct ixgbe_hw
*hw
= &adapter
->hw
;
2404 u32 link_speed
= adapter
->link_speed
;
2405 bool link_up
= adapter
->link_up
;
2408 if (IXGBE_REMOVED(hw
->hw_addr
)) {
2409 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
)) {
2411 ixgbevf_down(adapter
);
2416 ixgbevf_queue_reset_subtask(adapter
);
2418 adapter
->flags
|= IXGBE_FLAG_IN_WATCHDOG_TASK
;
2421 * Always check the link on the watchdog because we have
2424 spin_lock_bh(&adapter
->mbx_lock
);
2426 need_reset
= hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
2428 spin_unlock_bh(&adapter
->mbx_lock
);
2431 adapter
->link_up
= link_up
;
2432 adapter
->link_speed
= link_speed
;
2433 netif_carrier_off(netdev
);
2434 netif_tx_stop_all_queues(netdev
);
2435 schedule_work(&adapter
->reset_task
);
2438 adapter
->link_up
= link_up
;
2439 adapter
->link_speed
= link_speed
;
2442 if (!netif_carrier_ok(netdev
)) {
2443 char *link_speed_string
;
2444 switch (link_speed
) {
2445 case IXGBE_LINK_SPEED_10GB_FULL
:
2446 link_speed_string
= "10 Gbps";
2448 case IXGBE_LINK_SPEED_1GB_FULL
:
2449 link_speed_string
= "1 Gbps";
2451 case IXGBE_LINK_SPEED_100_FULL
:
2452 link_speed_string
= "100 Mbps";
2455 link_speed_string
= "unknown speed";
2458 dev_info(&adapter
->pdev
->dev
,
2459 "NIC Link is Up, %s\n", link_speed_string
);
2460 netif_carrier_on(netdev
);
2461 netif_tx_wake_all_queues(netdev
);
2464 adapter
->link_up
= false;
2465 adapter
->link_speed
= 0;
2466 if (netif_carrier_ok(netdev
)) {
2467 dev_info(&adapter
->pdev
->dev
, "NIC Link is Down\n");
2468 netif_carrier_off(netdev
);
2469 netif_tx_stop_all_queues(netdev
);
2473 ixgbevf_update_stats(adapter
);
2476 /* Reset the timer */
2477 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
) &&
2478 !test_bit(__IXGBEVF_REMOVING
, &adapter
->state
))
2479 mod_timer(&adapter
->watchdog_timer
,
2480 round_jiffies(jiffies
+ (2 * HZ
)));
2482 adapter
->flags
&= ~IXGBE_FLAG_IN_WATCHDOG_TASK
;
2486 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2487 * @tx_ring: Tx descriptor ring for a specific queue
2489 * Free all transmit software resources
2491 void ixgbevf_free_tx_resources(struct ixgbevf_ring
*tx_ring
)
2493 ixgbevf_clean_tx_ring(tx_ring
);
2495 vfree(tx_ring
->tx_buffer_info
);
2496 tx_ring
->tx_buffer_info
= NULL
;
2498 /* if not set, then don't free */
2502 dma_free_coherent(tx_ring
->dev
, tx_ring
->size
, tx_ring
->desc
,
2505 tx_ring
->desc
= NULL
;
2509 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2510 * @adapter: board private structure
2512 * Free all transmit software resources
2514 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2518 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2519 if (adapter
->tx_ring
[i
]->desc
)
2520 ixgbevf_free_tx_resources(adapter
->tx_ring
[i
]);
2524 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2525 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2527 * Return 0 on success, negative on failure
2529 int ixgbevf_setup_tx_resources(struct ixgbevf_ring
*tx_ring
)
2533 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
2534 tx_ring
->tx_buffer_info
= vzalloc(size
);
2535 if (!tx_ring
->tx_buffer_info
)
2538 /* round up to nearest 4K */
2539 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
2540 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2542 tx_ring
->desc
= dma_alloc_coherent(tx_ring
->dev
, tx_ring
->size
,
2543 &tx_ring
->dma
, GFP_KERNEL
);
2550 vfree(tx_ring
->tx_buffer_info
);
2551 tx_ring
->tx_buffer_info
= NULL
;
2552 hw_dbg(&adapter
->hw
, "Unable to allocate memory for the transmit "
2553 "descriptor ring\n");
2558 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2559 * @adapter: board private structure
2561 * If this function returns with an error, then it's possible one or
2562 * more of the rings is populated (while the rest are not). It is the
2563 * callers duty to clean those orphaned rings.
2565 * Return 0 on success, negative on failure
2567 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2571 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2572 err
= ixgbevf_setup_tx_resources(adapter
->tx_ring
[i
]);
2575 hw_dbg(&adapter
->hw
,
2576 "Allocation for Tx Queue %u failed\n", i
);
2584 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2585 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2587 * Returns 0 on success, negative on failure
2589 int ixgbevf_setup_rx_resources(struct ixgbevf_ring
*rx_ring
)
2593 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
2594 rx_ring
->rx_buffer_info
= vzalloc(size
);
2595 if (!rx_ring
->rx_buffer_info
)
2598 /* Round up to nearest 4K */
2599 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
2600 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2602 rx_ring
->desc
= dma_alloc_coherent(rx_ring
->dev
, rx_ring
->size
,
2603 &rx_ring
->dma
, GFP_KERNEL
);
2610 vfree(rx_ring
->rx_buffer_info
);
2611 rx_ring
->rx_buffer_info
= NULL
;
2612 dev_err(rx_ring
->dev
, "Unable to allocate memory for the Rx descriptor ring\n");
2617 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2618 * @adapter: board private structure
2620 * If this function returns with an error, then it's possible one or
2621 * more of the rings is populated (while the rest are not). It is the
2622 * callers duty to clean those orphaned rings.
2624 * Return 0 on success, negative on failure
2626 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2630 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2631 err
= ixgbevf_setup_rx_resources(adapter
->rx_ring
[i
]);
2634 hw_dbg(&adapter
->hw
,
2635 "Allocation for Rx Queue %u failed\n", i
);
2642 * ixgbevf_free_rx_resources - Free Rx Resources
2643 * @rx_ring: ring to clean the resources from
2645 * Free all receive software resources
2647 void ixgbevf_free_rx_resources(struct ixgbevf_ring
*rx_ring
)
2649 ixgbevf_clean_rx_ring(rx_ring
);
2651 vfree(rx_ring
->rx_buffer_info
);
2652 rx_ring
->rx_buffer_info
= NULL
;
2654 dma_free_coherent(rx_ring
->dev
, rx_ring
->size
, rx_ring
->desc
,
2657 rx_ring
->desc
= NULL
;
2661 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2662 * @adapter: board private structure
2664 * Free all receive software resources
2666 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2670 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2671 if (adapter
->rx_ring
[i
]->desc
)
2672 ixgbevf_free_rx_resources(adapter
->rx_ring
[i
]);
2676 * ixgbevf_open - Called when a network interface is made active
2677 * @netdev: network interface device structure
2679 * Returns 0 on success, negative value on failure
2681 * The open entry point is called when a network interface is made
2682 * active by the system (IFF_UP). At this point all resources needed
2683 * for transmit and receive operations are allocated, the interrupt
2684 * handler is registered with the OS, the watchdog timer is started,
2685 * and the stack is notified that the interface is ready.
2687 static int ixgbevf_open(struct net_device
*netdev
)
2689 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2690 struct ixgbe_hw
*hw
= &adapter
->hw
;
2693 /* A previous failure to open the device because of a lack of
2694 * available MSIX vector resources may have reset the number
2695 * of msix vectors variable to zero. The only way to recover
2696 * is to unload/reload the driver and hope that the system has
2697 * been able to recover some MSIX vector resources.
2699 if (!adapter
->num_msix_vectors
)
2702 /* disallow open during test */
2703 if (test_bit(__IXGBEVF_TESTING
, &adapter
->state
))
2706 if (hw
->adapter_stopped
) {
2707 ixgbevf_reset(adapter
);
2708 /* if adapter is still stopped then PF isn't up and
2709 * the vf can't start. */
2710 if (hw
->adapter_stopped
) {
2711 err
= IXGBE_ERR_MBX
;
2712 pr_err("Unable to start - perhaps the PF Driver isn't "
2714 goto err_setup_reset
;
2718 /* allocate transmit descriptors */
2719 err
= ixgbevf_setup_all_tx_resources(adapter
);
2723 /* allocate receive descriptors */
2724 err
= ixgbevf_setup_all_rx_resources(adapter
);
2728 ixgbevf_configure(adapter
);
2731 * Map the Tx/Rx rings to the vectors we were allotted.
2732 * if request_irq will be called in this function map_rings
2733 * must be called *before* up_complete
2735 ixgbevf_map_rings_to_vectors(adapter
);
2737 ixgbevf_up_complete(adapter
);
2739 /* clear any pending interrupts, may auto mask */
2740 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
2741 err
= ixgbevf_request_irq(adapter
);
2745 ixgbevf_irq_enable(adapter
);
2750 ixgbevf_down(adapter
);
2752 ixgbevf_free_all_rx_resources(adapter
);
2754 ixgbevf_free_all_tx_resources(adapter
);
2755 ixgbevf_reset(adapter
);
2763 * ixgbevf_close - Disables a network interface
2764 * @netdev: network interface device structure
2766 * Returns 0, this is not allowed to fail
2768 * The close entry point is called when an interface is de-activated
2769 * by the OS. The hardware is still under the drivers control, but
2770 * needs to be disabled. A global MAC reset is issued to stop the
2771 * hardware, and all transmit and receive resources are freed.
2773 static int ixgbevf_close(struct net_device
*netdev
)
2775 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2777 ixgbevf_down(adapter
);
2778 ixgbevf_free_irq(adapter
);
2780 ixgbevf_free_all_tx_resources(adapter
);
2781 ixgbevf_free_all_rx_resources(adapter
);
2786 static void ixgbevf_queue_reset_subtask(struct ixgbevf_adapter
*adapter
)
2788 struct net_device
*dev
= adapter
->netdev
;
2790 if (!(adapter
->flags
& IXGBEVF_FLAG_QUEUE_RESET_REQUESTED
))
2793 adapter
->flags
&= ~IXGBEVF_FLAG_QUEUE_RESET_REQUESTED
;
2795 /* if interface is down do nothing */
2796 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2797 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2800 /* Hardware has to reinitialize queues and interrupts to
2801 * match packet buffer alignment. Unfortunately, the
2802 * hardware is not flexible enough to do this dynamically.
2804 if (netif_running(dev
))
2807 ixgbevf_clear_interrupt_scheme(adapter
);
2808 ixgbevf_init_interrupt_scheme(adapter
);
2810 if (netif_running(dev
))
2814 static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring
*tx_ring
,
2815 u32 vlan_macip_lens
, u32 type_tucmd
,
2818 struct ixgbe_adv_tx_context_desc
*context_desc
;
2819 u16 i
= tx_ring
->next_to_use
;
2821 context_desc
= IXGBEVF_TX_CTXTDESC(tx_ring
, i
);
2824 tx_ring
->next_to_use
= (i
< tx_ring
->count
) ? i
: 0;
2826 /* set bits to identify this as an advanced context descriptor */
2827 type_tucmd
|= IXGBE_TXD_CMD_DEXT
| IXGBE_ADVTXD_DTYP_CTXT
;
2829 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
2830 context_desc
->seqnum_seed
= 0;
2831 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd
);
2832 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2835 static int ixgbevf_tso(struct ixgbevf_ring
*tx_ring
,
2836 struct ixgbevf_tx_buffer
*first
,
2839 struct sk_buff
*skb
= first
->skb
;
2840 u32 vlan_macip_lens
, type_tucmd
;
2841 u32 mss_l4len_idx
, l4len
;
2844 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
2847 if (!skb_is_gso(skb
))
2850 err
= skb_cow_head(skb
, 0);
2854 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2855 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2857 if (skb
->protocol
== htons(ETH_P_IP
)) {
2858 struct iphdr
*iph
= ip_hdr(skb
);
2861 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2865 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2866 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
2867 IXGBE_TX_FLAGS_CSUM
|
2868 IXGBE_TX_FLAGS_IPV4
;
2869 } else if (skb_is_gso_v6(skb
)) {
2870 ipv6_hdr(skb
)->payload_len
= 0;
2871 tcp_hdr(skb
)->check
=
2872 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2873 &ipv6_hdr(skb
)->daddr
,
2875 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
2876 IXGBE_TX_FLAGS_CSUM
;
2879 /* compute header lengths */
2880 l4len
= tcp_hdrlen(skb
);
2882 *hdr_len
= skb_transport_offset(skb
) + l4len
;
2884 /* update gso size and bytecount with header size */
2885 first
->gso_segs
= skb_shinfo(skb
)->gso_segs
;
2886 first
->bytecount
+= (first
->gso_segs
- 1) * *hdr_len
;
2888 /* mss_l4len_id: use 1 as index for TSO */
2889 mss_l4len_idx
= l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
;
2890 mss_l4len_idx
|= skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
;
2891 mss_l4len_idx
|= 1 << IXGBE_ADVTXD_IDX_SHIFT
;
2893 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
2894 vlan_macip_lens
= skb_network_header_len(skb
);
2895 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2896 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2898 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2899 type_tucmd
, mss_l4len_idx
);
2904 static void ixgbevf_tx_csum(struct ixgbevf_ring
*tx_ring
,
2905 struct ixgbevf_tx_buffer
*first
)
2907 struct sk_buff
*skb
= first
->skb
;
2908 u32 vlan_macip_lens
= 0;
2909 u32 mss_l4len_idx
= 0;
2912 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2914 switch (skb
->protocol
) {
2915 case htons(ETH_P_IP
):
2916 vlan_macip_lens
|= skb_network_header_len(skb
);
2917 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2918 l4_hdr
= ip_hdr(skb
)->protocol
;
2920 case htons(ETH_P_IPV6
):
2921 vlan_macip_lens
|= skb_network_header_len(skb
);
2922 l4_hdr
= ipv6_hdr(skb
)->nexthdr
;
2925 if (unlikely(net_ratelimit())) {
2926 dev_warn(tx_ring
->dev
,
2927 "partial checksum but proto=%x!\n",
2935 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2936 mss_l4len_idx
= tcp_hdrlen(skb
) <<
2937 IXGBE_ADVTXD_L4LEN_SHIFT
;
2940 type_tucmd
|= IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
2941 mss_l4len_idx
= sizeof(struct sctphdr
) <<
2942 IXGBE_ADVTXD_L4LEN_SHIFT
;
2945 mss_l4len_idx
= sizeof(struct udphdr
) <<
2946 IXGBE_ADVTXD_L4LEN_SHIFT
;
2949 if (unlikely(net_ratelimit())) {
2950 dev_warn(tx_ring
->dev
,
2951 "partial checksum but l4 proto=%x!\n",
2957 /* update TX checksum flag */
2958 first
->tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
2961 /* vlan_macip_lens: MACLEN, VLAN tag */
2962 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
2963 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
2965 ixgbevf_tx_ctxtdesc(tx_ring
, vlan_macip_lens
,
2966 type_tucmd
, mss_l4len_idx
);
2969 static __le32
ixgbevf_tx_cmd_type(u32 tx_flags
)
2971 /* set type for advanced descriptor with frame checksum insertion */
2972 __le32 cmd_type
= cpu_to_le32(IXGBE_ADVTXD_DTYP_DATA
|
2973 IXGBE_ADVTXD_DCMD_IFCS
|
2974 IXGBE_ADVTXD_DCMD_DEXT
);
2976 /* set HW vlan bit if vlan is present */
2977 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
2978 cmd_type
|= cpu_to_le32(IXGBE_ADVTXD_DCMD_VLE
);
2980 /* set segmentation enable bits for TSO/FSO */
2981 if (tx_flags
& IXGBE_TX_FLAGS_TSO
)
2982 cmd_type
|= cpu_to_le32(IXGBE_ADVTXD_DCMD_TSE
);
2987 static void ixgbevf_tx_olinfo_status(union ixgbe_adv_tx_desc
*tx_desc
,
2988 u32 tx_flags
, unsigned int paylen
)
2990 __le32 olinfo_status
= cpu_to_le32(paylen
<< IXGBE_ADVTXD_PAYLEN_SHIFT
);
2992 /* enable L4 checksum for TSO and TX checksum offload */
2993 if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
2994 olinfo_status
|= cpu_to_le32(IXGBE_ADVTXD_POPTS_TXSM
);
2996 /* enble IPv4 checksum for TSO */
2997 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
2998 olinfo_status
|= cpu_to_le32(IXGBE_ADVTXD_POPTS_IXSM
);
3000 /* use index 1 context for TSO/FSO/FCOE */
3001 if (tx_flags
& IXGBE_TX_FLAGS_TSO
)
3002 olinfo_status
|= cpu_to_le32(1 << IXGBE_ADVTXD_IDX_SHIFT
);
3004 /* Check Context must be set if Tx switch is enabled, which it
3005 * always is for case where virtual functions are running
3007 olinfo_status
|= cpu_to_le32(IXGBE_ADVTXD_CC
);
3009 tx_desc
->read
.olinfo_status
= olinfo_status
;
3012 static void ixgbevf_tx_map(struct ixgbevf_ring
*tx_ring
,
3013 struct ixgbevf_tx_buffer
*first
,
3017 struct sk_buff
*skb
= first
->skb
;
3018 struct ixgbevf_tx_buffer
*tx_buffer
;
3019 union ixgbe_adv_tx_desc
*tx_desc
;
3020 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[0];
3021 unsigned int data_len
= skb
->data_len
;
3022 unsigned int size
= skb_headlen(skb
);
3023 unsigned int paylen
= skb
->len
- hdr_len
;
3024 u32 tx_flags
= first
->tx_flags
;
3026 u16 i
= tx_ring
->next_to_use
;
3028 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, i
);
3030 ixgbevf_tx_olinfo_status(tx_desc
, tx_flags
, paylen
);
3031 cmd_type
= ixgbevf_tx_cmd_type(tx_flags
);
3033 dma
= dma_map_single(tx_ring
->dev
, skb
->data
, size
, DMA_TO_DEVICE
);
3034 if (dma_mapping_error(tx_ring
->dev
, dma
))
3037 /* record length, and DMA address */
3038 dma_unmap_len_set(first
, len
, size
);
3039 dma_unmap_addr_set(first
, dma
, dma
);
3041 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
3044 while (unlikely(size
> IXGBE_MAX_DATA_PER_TXD
)) {
3045 tx_desc
->read
.cmd_type_len
=
3046 cmd_type
| cpu_to_le32(IXGBE_MAX_DATA_PER_TXD
);
3050 if (i
== tx_ring
->count
) {
3051 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, 0);
3055 dma
+= IXGBE_MAX_DATA_PER_TXD
;
3056 size
-= IXGBE_MAX_DATA_PER_TXD
;
3058 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
3059 tx_desc
->read
.olinfo_status
= 0;
3062 if (likely(!data_len
))
3065 tx_desc
->read
.cmd_type_len
= cmd_type
| cpu_to_le32(size
);
3069 if (i
== tx_ring
->count
) {
3070 tx_desc
= IXGBEVF_TX_DESC(tx_ring
, 0);
3074 size
= skb_frag_size(frag
);
3077 dma
= skb_frag_dma_map(tx_ring
->dev
, frag
, 0, size
,
3079 if (dma_mapping_error(tx_ring
->dev
, dma
))
3082 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
3083 dma_unmap_len_set(tx_buffer
, len
, size
);
3084 dma_unmap_addr_set(tx_buffer
, dma
, dma
);
3086 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
3087 tx_desc
->read
.olinfo_status
= 0;
3092 /* write last descriptor with RS and EOP bits */
3093 cmd_type
|= cpu_to_le32(size
) | cpu_to_le32(IXGBE_TXD_CMD
);
3094 tx_desc
->read
.cmd_type_len
= cmd_type
;
3096 /* set the timestamp */
3097 first
->time_stamp
= jiffies
;
3099 /* Force memory writes to complete before letting h/w know there
3100 * are new descriptors to fetch. (Only applicable for weak-ordered
3101 * memory model archs, such as IA-64).
3103 * We also need this memory barrier (wmb) to make certain all of the
3104 * status bits have been updated before next_to_watch is written.
3108 /* set next_to_watch value indicating a packet is present */
3109 first
->next_to_watch
= tx_desc
;
3112 if (i
== tx_ring
->count
)
3115 tx_ring
->next_to_use
= i
;
3117 /* notify HW of packet */
3118 ixgbevf_write_tail(tx_ring
, i
);
3122 dev_err(tx_ring
->dev
, "TX DMA map failed\n");
3124 /* clear dma mappings for failed tx_buffer_info map */
3126 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
3127 ixgbevf_unmap_and_free_tx_resource(tx_ring
, tx_buffer
);
3128 if (tx_buffer
== first
)
3135 tx_ring
->next_to_use
= i
;
3138 static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
3140 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
3141 /* Herbert's original patch had:
3142 * smp_mb__after_netif_stop_queue();
3143 * but since that doesn't exist yet, just open code it. */
3146 /* We need to check again in a case another CPU has just
3147 * made room available. */
3148 if (likely(ixgbevf_desc_unused(tx_ring
) < size
))
3151 /* A reprieve! - use start_queue because it doesn't call schedule */
3152 netif_start_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
3153 ++tx_ring
->tx_stats
.restart_queue
;
3158 static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring
*tx_ring
, int size
)
3160 if (likely(ixgbevf_desc_unused(tx_ring
) >= size
))
3162 return __ixgbevf_maybe_stop_tx(tx_ring
, size
);
3165 static int ixgbevf_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3167 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3168 struct ixgbevf_tx_buffer
*first
;
3169 struct ixgbevf_ring
*tx_ring
;
3172 u16 count
= TXD_USE_COUNT(skb_headlen(skb
));
3173 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
3177 u8
*dst_mac
= skb_header_pointer(skb
, 0, 0, NULL
);
3179 if (!dst_mac
|| is_link_local_ether_addr(dst_mac
)) {
3181 return NETDEV_TX_OK
;
3184 tx_ring
= adapter
->tx_ring
[skb
->queue_mapping
];
3187 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
3188 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
3189 * + 2 desc gap to keep tail from touching head,
3190 * + 1 desc for context descriptor,
3191 * otherwise try next time
3193 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
3194 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
3195 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
3197 count
+= skb_shinfo(skb
)->nr_frags
;
3199 if (ixgbevf_maybe_stop_tx(tx_ring
, count
+ 3)) {
3200 tx_ring
->tx_stats
.tx_busy
++;
3201 return NETDEV_TX_BUSY
;
3204 /* record the location of the first descriptor for this packet */
3205 first
= &tx_ring
->tx_buffer_info
[tx_ring
->next_to_use
];
3207 first
->bytecount
= skb
->len
;
3208 first
->gso_segs
= 1;
3210 if (vlan_tx_tag_present(skb
)) {
3211 tx_flags
|= vlan_tx_tag_get(skb
);
3212 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
3213 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
3216 /* record initial flags and protocol */
3217 first
->tx_flags
= tx_flags
;
3218 first
->protocol
= vlan_get_protocol(skb
);
3220 tso
= ixgbevf_tso(tx_ring
, first
, &hdr_len
);
3224 ixgbevf_tx_csum(tx_ring
, first
);
3226 ixgbevf_tx_map(tx_ring
, first
, hdr_len
);
3228 ixgbevf_maybe_stop_tx(tx_ring
, DESC_NEEDED
);
3230 return NETDEV_TX_OK
;
3233 dev_kfree_skb_any(first
->skb
);
3236 return NETDEV_TX_OK
;
3240 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3241 * @netdev: network interface device structure
3242 * @p: pointer to an address structure
3244 * Returns 0 on success, negative on failure
3246 static int ixgbevf_set_mac(struct net_device
*netdev
, void *p
)
3248 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3249 struct ixgbe_hw
*hw
= &adapter
->hw
;
3250 struct sockaddr
*addr
= p
;
3252 if (!is_valid_ether_addr(addr
->sa_data
))
3253 return -EADDRNOTAVAIL
;
3255 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3256 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3258 spin_lock_bh(&adapter
->mbx_lock
);
3260 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
3262 spin_unlock_bh(&adapter
->mbx_lock
);
3268 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3269 * @netdev: network interface device structure
3270 * @new_mtu: new value for maximum frame size
3272 * Returns 0 on success, negative on failure
3274 static int ixgbevf_change_mtu(struct net_device
*netdev
, int new_mtu
)
3276 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3277 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3278 int max_possible_frame
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3280 switch (adapter
->hw
.api_version
) {
3281 case ixgbe_mbox_api_11
:
3282 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3285 if (adapter
->hw
.mac
.type
== ixgbe_mac_X540_vf
)
3286 max_possible_frame
= IXGBE_MAX_JUMBO_FRAME_SIZE
;
3290 /* MTU < 68 is an error and causes problems on some kernels */
3291 if ((new_mtu
< 68) || (max_frame
> max_possible_frame
))
3294 hw_dbg(&adapter
->hw
, "changing MTU from %d to %d\n",
3295 netdev
->mtu
, new_mtu
);
3296 /* must set new MTU before calling down or up */
3297 netdev
->mtu
= new_mtu
;
3299 if (netif_running(netdev
))
3300 ixgbevf_reinit_locked(adapter
);
3305 static int ixgbevf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3307 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3308 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3313 netif_device_detach(netdev
);
3315 if (netif_running(netdev
)) {
3317 ixgbevf_down(adapter
);
3318 ixgbevf_free_irq(adapter
);
3319 ixgbevf_free_all_tx_resources(adapter
);
3320 ixgbevf_free_all_rx_resources(adapter
);
3324 ixgbevf_clear_interrupt_scheme(adapter
);
3327 retval
= pci_save_state(pdev
);
3332 if (!test_and_set_bit(__IXGBEVF_DISABLED
, &adapter
->state
))
3333 pci_disable_device(pdev
);
3339 static int ixgbevf_resume(struct pci_dev
*pdev
)
3341 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3342 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3345 pci_restore_state(pdev
);
3347 * pci_restore_state clears dev->state_saved so call
3348 * pci_save_state to restore it.
3350 pci_save_state(pdev
);
3352 err
= pci_enable_device_mem(pdev
);
3354 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
3357 smp_mb__before_atomic();
3358 clear_bit(__IXGBEVF_DISABLED
, &adapter
->state
);
3359 pci_set_master(pdev
);
3361 ixgbevf_reset(adapter
);
3364 err
= ixgbevf_init_interrupt_scheme(adapter
);
3367 dev_err(&pdev
->dev
, "Cannot initialize interrupts\n");
3371 if (netif_running(netdev
)) {
3372 err
= ixgbevf_open(netdev
);
3377 netif_device_attach(netdev
);
3382 #endif /* CONFIG_PM */
3383 static void ixgbevf_shutdown(struct pci_dev
*pdev
)
3385 ixgbevf_suspend(pdev
, PMSG_SUSPEND
);
3388 static struct rtnl_link_stats64
*ixgbevf_get_stats(struct net_device
*netdev
,
3389 struct rtnl_link_stats64
*stats
)
3391 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3394 const struct ixgbevf_ring
*ring
;
3397 ixgbevf_update_stats(adapter
);
3399 stats
->multicast
= adapter
->stats
.vfmprc
- adapter
->stats
.base_vfmprc
;
3401 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3402 ring
= adapter
->rx_ring
[i
];
3404 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
3405 bytes
= ring
->stats
.bytes
;
3406 packets
= ring
->stats
.packets
;
3407 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
3408 stats
->rx_bytes
+= bytes
;
3409 stats
->rx_packets
+= packets
;
3412 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3413 ring
= adapter
->tx_ring
[i
];
3415 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
3416 bytes
= ring
->stats
.bytes
;
3417 packets
= ring
->stats
.packets
;
3418 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
3419 stats
->tx_bytes
+= bytes
;
3420 stats
->tx_packets
+= packets
;
3426 static const struct net_device_ops ixgbevf_netdev_ops
= {
3427 .ndo_open
= ixgbevf_open
,
3428 .ndo_stop
= ixgbevf_close
,
3429 .ndo_start_xmit
= ixgbevf_xmit_frame
,
3430 .ndo_set_rx_mode
= ixgbevf_set_rx_mode
,
3431 .ndo_get_stats64
= ixgbevf_get_stats
,
3432 .ndo_validate_addr
= eth_validate_addr
,
3433 .ndo_set_mac_address
= ixgbevf_set_mac
,
3434 .ndo_change_mtu
= ixgbevf_change_mtu
,
3435 .ndo_tx_timeout
= ixgbevf_tx_timeout
,
3436 .ndo_vlan_rx_add_vid
= ixgbevf_vlan_rx_add_vid
,
3437 .ndo_vlan_rx_kill_vid
= ixgbevf_vlan_rx_kill_vid
,
3438 #ifdef CONFIG_NET_RX_BUSY_POLL
3439 .ndo_busy_poll
= ixgbevf_busy_poll_recv
,
3443 static void ixgbevf_assign_netdev_ops(struct net_device
*dev
)
3445 dev
->netdev_ops
= &ixgbevf_netdev_ops
;
3446 ixgbevf_set_ethtool_ops(dev
);
3447 dev
->watchdog_timeo
= 5 * HZ
;
3451 * ixgbevf_probe - Device Initialization Routine
3452 * @pdev: PCI device information struct
3453 * @ent: entry in ixgbevf_pci_tbl
3455 * Returns 0 on success, negative on failure
3457 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3458 * The OS initialization, configuring of the adapter private structure,
3459 * and a hardware reset occur.
3461 static int ixgbevf_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3463 struct net_device
*netdev
;
3464 struct ixgbevf_adapter
*adapter
= NULL
;
3465 struct ixgbe_hw
*hw
= NULL
;
3466 const struct ixgbevf_info
*ii
= ixgbevf_info_tbl
[ent
->driver_data
];
3467 static int cards_found
;
3468 int err
, pci_using_dac
;
3470 err
= pci_enable_device(pdev
);
3474 if (!dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64))) {
3477 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
3479 dev_err(&pdev
->dev
, "No usable DMA "
3480 "configuration, aborting\n");
3486 err
= pci_request_regions(pdev
, ixgbevf_driver_name
);
3488 dev_err(&pdev
->dev
, "pci_request_regions failed 0x%x\n", err
);
3492 pci_set_master(pdev
);
3494 netdev
= alloc_etherdev_mq(sizeof(struct ixgbevf_adapter
),
3498 goto err_alloc_etherdev
;
3501 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
3503 pci_set_drvdata(pdev
, netdev
);
3504 adapter
= netdev_priv(netdev
);
3506 adapter
->netdev
= netdev
;
3507 adapter
->pdev
= pdev
;
3510 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
3513 * call save state here in standalone driver because it relies on
3514 * adapter struct to exist, and needs to call netdev_priv
3516 pci_save_state(pdev
);
3518 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
3519 pci_resource_len(pdev
, 0));
3520 adapter
->io_addr
= hw
->hw_addr
;
3526 ixgbevf_assign_netdev_ops(netdev
);
3528 adapter
->bd_number
= cards_found
;
3531 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
3532 hw
->mac
.type
= ii
->mac
;
3534 memcpy(&hw
->mbx
.ops
, &ixgbevf_mbx_ops
,
3535 sizeof(struct ixgbe_mbx_operations
));
3537 /* setup the private structure */
3538 err
= ixgbevf_sw_init(adapter
);
3542 /* The HW MAC address was set and/or determined in sw_init */
3543 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
3544 pr_err("invalid MAC address\n");
3549 netdev
->hw_features
= NETIF_F_SG
|
3556 netdev
->features
= netdev
->hw_features
|
3557 NETIF_F_HW_VLAN_CTAG_TX
|
3558 NETIF_F_HW_VLAN_CTAG_RX
|
3559 NETIF_F_HW_VLAN_CTAG_FILTER
;
3561 netdev
->vlan_features
|= NETIF_F_TSO
;
3562 netdev
->vlan_features
|= NETIF_F_TSO6
;
3563 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
3564 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
3565 netdev
->vlan_features
|= NETIF_F_SG
;
3568 netdev
->features
|= NETIF_F_HIGHDMA
;
3570 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
3572 init_timer(&adapter
->watchdog_timer
);
3573 adapter
->watchdog_timer
.function
= ixgbevf_watchdog
;
3574 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
3576 if (IXGBE_REMOVED(hw
->hw_addr
)) {
3580 INIT_WORK(&adapter
->reset_task
, ixgbevf_reset_task
);
3581 INIT_WORK(&adapter
->watchdog_task
, ixgbevf_watchdog_task
);
3582 set_bit(__IXGBEVF_WORK_INIT
, &adapter
->state
);
3584 err
= ixgbevf_init_interrupt_scheme(adapter
);
3588 strcpy(netdev
->name
, "eth%d");
3590 err
= register_netdev(netdev
);
3594 netif_carrier_off(netdev
);
3596 ixgbevf_init_last_counter_stats(adapter
);
3598 /* print the MAC address */
3599 hw_dbg(hw
, "%pM\n", netdev
->dev_addr
);
3601 hw_dbg(hw
, "MAC: %d\n", hw
->mac
.type
);
3603 hw_dbg(hw
, "Intel(R) 82599 Virtual Function\n");
3608 ixgbevf_clear_interrupt_scheme(adapter
);
3610 ixgbevf_reset_interrupt_capability(adapter
);
3611 iounmap(adapter
->io_addr
);
3613 free_netdev(netdev
);
3615 pci_release_regions(pdev
);
3618 if (!test_and_set_bit(__IXGBEVF_DISABLED
, &adapter
->state
))
3619 pci_disable_device(pdev
);
3624 * ixgbevf_remove - Device Removal Routine
3625 * @pdev: PCI device information struct
3627 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3628 * that it should release a PCI device. The could be caused by a
3629 * Hot-Plug event, or because the driver is going to be removed from
3632 static void ixgbevf_remove(struct pci_dev
*pdev
)
3634 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3635 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3637 set_bit(__IXGBEVF_REMOVING
, &adapter
->state
);
3639 del_timer_sync(&adapter
->watchdog_timer
);
3641 cancel_work_sync(&adapter
->reset_task
);
3642 cancel_work_sync(&adapter
->watchdog_task
);
3644 if (netdev
->reg_state
== NETREG_REGISTERED
)
3645 unregister_netdev(netdev
);
3647 ixgbevf_clear_interrupt_scheme(adapter
);
3648 ixgbevf_reset_interrupt_capability(adapter
);
3650 iounmap(adapter
->io_addr
);
3651 pci_release_regions(pdev
);
3653 hw_dbg(&adapter
->hw
, "Remove complete\n");
3655 free_netdev(netdev
);
3657 if (!test_and_set_bit(__IXGBEVF_DISABLED
, &adapter
->state
))
3658 pci_disable_device(pdev
);
3662 * ixgbevf_io_error_detected - called when PCI error is detected
3663 * @pdev: Pointer to PCI device
3664 * @state: The current pci connection state
3666 * This function is called after a PCI bus error affecting
3667 * this device has been detected.
3669 static pci_ers_result_t
ixgbevf_io_error_detected(struct pci_dev
*pdev
,
3670 pci_channel_state_t state
)
3672 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3673 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3675 if (!test_bit(__IXGBEVF_WORK_INIT
, &adapter
->state
))
3676 return PCI_ERS_RESULT_DISCONNECT
;
3679 netif_device_detach(netdev
);
3681 if (state
== pci_channel_io_perm_failure
) {
3683 return PCI_ERS_RESULT_DISCONNECT
;
3686 if (netif_running(netdev
))
3687 ixgbevf_down(adapter
);
3689 if (!test_and_set_bit(__IXGBEVF_DISABLED
, &adapter
->state
))
3690 pci_disable_device(pdev
);
3693 /* Request a slot slot reset. */
3694 return PCI_ERS_RESULT_NEED_RESET
;
3698 * ixgbevf_io_slot_reset - called after the pci bus has been reset.
3699 * @pdev: Pointer to PCI device
3701 * Restart the card from scratch, as if from a cold-boot. Implementation
3702 * resembles the first-half of the ixgbevf_resume routine.
3704 static pci_ers_result_t
ixgbevf_io_slot_reset(struct pci_dev
*pdev
)
3706 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3707 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3709 if (pci_enable_device_mem(pdev
)) {
3711 "Cannot re-enable PCI device after reset.\n");
3712 return PCI_ERS_RESULT_DISCONNECT
;
3715 smp_mb__before_atomic();
3716 clear_bit(__IXGBEVF_DISABLED
, &adapter
->state
);
3717 pci_set_master(pdev
);
3719 ixgbevf_reset(adapter
);
3721 return PCI_ERS_RESULT_RECOVERED
;
3725 * ixgbevf_io_resume - called when traffic can start flowing again.
3726 * @pdev: Pointer to PCI device
3728 * This callback is called when the error recovery driver tells us that
3729 * its OK to resume normal operation. Implementation resembles the
3730 * second-half of the ixgbevf_resume routine.
3732 static void ixgbevf_io_resume(struct pci_dev
*pdev
)
3734 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3735 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3737 if (netif_running(netdev
))
3738 ixgbevf_up(adapter
);
3740 netif_device_attach(netdev
);
3743 /* PCI Error Recovery (ERS) */
3744 static const struct pci_error_handlers ixgbevf_err_handler
= {
3745 .error_detected
= ixgbevf_io_error_detected
,
3746 .slot_reset
= ixgbevf_io_slot_reset
,
3747 .resume
= ixgbevf_io_resume
,
3750 static struct pci_driver ixgbevf_driver
= {
3751 .name
= ixgbevf_driver_name
,
3752 .id_table
= ixgbevf_pci_tbl
,
3753 .probe
= ixgbevf_probe
,
3754 .remove
= ixgbevf_remove
,
3756 /* Power Management Hooks */
3757 .suspend
= ixgbevf_suspend
,
3758 .resume
= ixgbevf_resume
,
3760 .shutdown
= ixgbevf_shutdown
,
3761 .err_handler
= &ixgbevf_err_handler
3765 * ixgbevf_init_module - Driver Registration Routine
3767 * ixgbevf_init_module is the first routine called when the driver is
3768 * loaded. All it does is register with the PCI subsystem.
3770 static int __init
ixgbevf_init_module(void)
3773 pr_info("%s - version %s\n", ixgbevf_driver_string
,
3774 ixgbevf_driver_version
);
3776 pr_info("%s\n", ixgbevf_copyright
);
3778 ret
= pci_register_driver(&ixgbevf_driver
);
3782 module_init(ixgbevf_init_module
);
3785 * ixgbevf_exit_module - Driver Exit Cleanup Routine
3787 * ixgbevf_exit_module is called just before the driver is removed
3790 static void __exit
ixgbevf_exit_module(void)
3792 pci_unregister_driver(&ixgbevf_driver
);
3797 * ixgbevf_get_hw_dev_name - return device name string
3798 * used by hardware layer to print debugging information
3800 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw
*hw
)
3802 struct ixgbevf_adapter
*adapter
= hw
->back
;
3803 return adapter
->netdev
->name
;
3807 module_exit(ixgbevf_exit_module
);
3809 /* ixgbevf_main.c */