1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2009 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 ******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/module.h>
34 #include <linux/pci.h>
35 #include <linux/netdevice.h>
36 #include <linux/vmalloc.h>
37 #include <linux/string.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
50 char ixgbevf_driver_name
[] = "ixgbevf";
51 static const char ixgbevf_driver_string
[] =
52 "Intel(R) 82599 Virtual Function";
54 #define DRV_VERSION "1.0.0-k0"
55 const char ixgbevf_driver_version
[] = DRV_VERSION
;
56 static char ixgbevf_copyright
[] = "Copyright (c) 2009 Intel Corporation.";
58 static const struct ixgbevf_info
*ixgbevf_info_tbl
[] = {
59 [board_82599_vf
] = &ixgbevf_vf_info
,
62 /* ixgbevf_pci_tbl - PCI Device ID Table
64 * Wildcard entries (PCI_ANY_ID) should come last
65 * Last entry must be all 0s
67 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
68 * Class, Class Mask, private data (not used) }
70 static struct pci_device_id ixgbevf_pci_tbl
[] = {
71 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_VF
),
74 /* required last entry */
77 MODULE_DEVICE_TABLE(pci
, ixgbevf_pci_tbl
);
79 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
80 MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
81 MODULE_LICENSE("GPL");
82 MODULE_VERSION(DRV_VERSION
);
84 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
87 static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector
*q_vector
);
88 static void ixgbevf_write_eitr(struct ixgbevf_adapter
*adapter
, int v_idx
,
91 static inline void ixgbevf_release_rx_desc(struct ixgbe_hw
*hw
,
92 struct ixgbevf_ring
*rx_ring
,
96 * Force memory writes to complete before letting h/w
97 * know there are new descriptors to fetch. (Only
98 * applicable for weak-ordered memory model archs,
102 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(rx_ring
->reg_idx
), val
);
106 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
107 * @adapter: pointer to adapter struct
108 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
109 * @queue: queue to map the corresponding interrupt to
110 * @msix_vector: the vector to map to the corresponding queue
113 static void ixgbevf_set_ivar(struct ixgbevf_adapter
*adapter
, s8 direction
,
114 u8 queue
, u8 msix_vector
)
117 struct ixgbe_hw
*hw
= &adapter
->hw
;
118 if (direction
== -1) {
120 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
121 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR_MISC
);
124 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR_MISC
, ivar
);
126 /* tx or rx causes */
127 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
128 index
= ((16 * (queue
& 1)) + (8 * direction
));
129 ivar
= IXGBE_READ_REG(hw
, IXGBE_VTIVAR(queue
>> 1));
130 ivar
&= ~(0xFF << index
);
131 ivar
|= (msix_vector
<< index
);
132 IXGBE_WRITE_REG(hw
, IXGBE_VTIVAR(queue
>> 1), ivar
);
136 static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter
*adapter
,
137 struct ixgbevf_tx_buffer
140 if (tx_buffer_info
->dma
) {
141 if (tx_buffer_info
->mapped_as_page
)
142 dma_unmap_page(&adapter
->pdev
->dev
,
144 tx_buffer_info
->length
,
147 dma_unmap_single(&adapter
->pdev
->dev
,
149 tx_buffer_info
->length
,
151 tx_buffer_info
->dma
= 0;
153 if (tx_buffer_info
->skb
) {
154 dev_kfree_skb_any(tx_buffer_info
->skb
);
155 tx_buffer_info
->skb
= NULL
;
157 tx_buffer_info
->time_stamp
= 0;
158 /* tx_buffer_info must be completely set up in the transmit path */
161 static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter
*adapter
,
162 struct ixgbevf_ring
*tx_ring
,
165 struct ixgbe_hw
*hw
= &adapter
->hw
;
168 /* Detect a transmit hang in hardware, this serializes the
169 * check with the clearing of time_stamp and movement of eop */
170 head
= readl(hw
->hw_addr
+ tx_ring
->head
);
171 tail
= readl(hw
->hw_addr
+ tx_ring
->tail
);
172 adapter
->detect_tx_hung
= false;
173 if ((head
!= tail
) &&
174 tx_ring
->tx_buffer_info
[eop
].time_stamp
&&
175 time_after(jiffies
, tx_ring
->tx_buffer_info
[eop
].time_stamp
+ HZ
)) {
176 /* detected Tx unit hang */
177 union ixgbe_adv_tx_desc
*tx_desc
;
178 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
179 printk(KERN_ERR
"Detected Tx Unit Hang\n"
181 " TDH, TDT <%x>, <%x>\n"
182 " next_to_use <%x>\n"
183 " next_to_clean <%x>\n"
184 "tx_buffer_info[next_to_clean]\n"
185 " time_stamp <%lx>\n"
187 tx_ring
->queue_index
,
189 tx_ring
->next_to_use
, eop
,
190 tx_ring
->tx_buffer_info
[eop
].time_stamp
, jiffies
);
197 #define IXGBE_MAX_TXD_PWR 14
198 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
200 /* Tx Descriptors needed, worst case */
201 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
202 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
204 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
205 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
207 #define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD)
210 static void ixgbevf_tx_timeout(struct net_device
*netdev
);
213 * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
214 * @adapter: board private structure
215 * @tx_ring: tx ring to clean
217 static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter
*adapter
,
218 struct ixgbevf_ring
*tx_ring
)
220 struct net_device
*netdev
= adapter
->netdev
;
221 struct ixgbe_hw
*hw
= &adapter
->hw
;
222 union ixgbe_adv_tx_desc
*tx_desc
, *eop_desc
;
223 struct ixgbevf_tx_buffer
*tx_buffer_info
;
224 unsigned int i
, eop
, count
= 0;
225 unsigned int total_bytes
= 0, total_packets
= 0;
227 i
= tx_ring
->next_to_clean
;
228 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
229 eop_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
231 while ((eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)) &&
232 (count
< tx_ring
->work_limit
)) {
233 bool cleaned
= false;
234 for ( ; !cleaned
; count
++) {
236 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, i
);
237 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
238 cleaned
= (i
== eop
);
239 skb
= tx_buffer_info
->skb
;
241 if (cleaned
&& skb
) {
242 unsigned int segs
, bytecount
;
244 /* gso_segs is currently only valid for tcp */
245 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
246 /* multiply data chunks by size of headers */
247 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
249 total_packets
+= segs
;
250 total_bytes
+= bytecount
;
253 ixgbevf_unmap_and_free_tx_resource(adapter
,
256 tx_desc
->wb
.status
= 0;
259 if (i
== tx_ring
->count
)
263 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
264 eop_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
267 tx_ring
->next_to_clean
= i
;
269 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
270 if (unlikely(count
&& netif_carrier_ok(netdev
) &&
271 (IXGBE_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
272 /* Make sure that anybody stopping the queue after this
273 * sees the new next_to_clean.
277 if (__netif_subqueue_stopped(netdev
, tx_ring
->queue_index
) &&
278 !test_bit(__IXGBEVF_DOWN
, &adapter
->state
)) {
279 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
280 ++adapter
->restart_queue
;
283 if (netif_queue_stopped(netdev
) &&
284 !test_bit(__IXGBEVF_DOWN
, &adapter
->state
)) {
285 netif_wake_queue(netdev
);
286 ++adapter
->restart_queue
;
291 if (adapter
->detect_tx_hung
) {
292 if (ixgbevf_check_tx_hang(adapter
, tx_ring
, i
)) {
293 /* schedule immediate reset if we believe we hung */
295 "tx hang %d detected, resetting adapter\n",
296 adapter
->tx_timeout_count
+ 1);
297 ixgbevf_tx_timeout(adapter
->netdev
);
301 /* re-arm the interrupt */
302 if ((count
>= tx_ring
->work_limit
) &&
303 (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))) {
304 IXGBE_WRITE_REG(hw
, IXGBE_VTEICS
, tx_ring
->v_idx
);
307 tx_ring
->total_bytes
+= total_bytes
;
308 tx_ring
->total_packets
+= total_packets
;
310 adapter
->net_stats
.tx_bytes
+= total_bytes
;
311 adapter
->net_stats
.tx_packets
+= total_packets
;
313 return (count
< tx_ring
->work_limit
);
317 * ixgbevf_receive_skb - Send a completed packet up the stack
318 * @q_vector: structure containing interrupt and ring information
319 * @skb: packet to send up
320 * @status: hardware indication of status of receive
321 * @rx_ring: rx descriptor ring (for a specific queue) to setup
322 * @rx_desc: rx descriptor
324 static void ixgbevf_receive_skb(struct ixgbevf_q_vector
*q_vector
,
325 struct sk_buff
*skb
, u8 status
,
326 struct ixgbevf_ring
*ring
,
327 union ixgbe_adv_rx_desc
*rx_desc
)
329 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
330 bool is_vlan
= (status
& IXGBE_RXD_STAT_VP
);
331 u16 tag
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
334 if (!(adapter
->flags
& IXGBE_FLAG_IN_NETPOLL
)) {
335 if (adapter
->vlgrp
&& is_vlan
)
336 vlan_gro_receive(&q_vector
->napi
,
340 napi_gro_receive(&q_vector
->napi
, skb
);
342 if (adapter
->vlgrp
&& is_vlan
)
343 ret
= vlan_hwaccel_rx(skb
, adapter
->vlgrp
, tag
);
350 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
351 * @adapter: address of board private structure
352 * @status_err: hardware indication of status of receive
353 * @skb: skb currently being received and modified
355 static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter
*adapter
,
356 u32 status_err
, struct sk_buff
*skb
)
358 skb
->ip_summed
= CHECKSUM_NONE
;
360 /* Rx csum disabled */
361 if (!(adapter
->flags
& IXGBE_FLAG_RX_CSUM_ENABLED
))
364 /* if IP and error */
365 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
366 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
367 adapter
->hw_csum_rx_error
++;
371 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
374 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
375 adapter
->hw_csum_rx_error
++;
379 /* It must be a TCP or UDP packet with a valid checksum */
380 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
381 adapter
->hw_csum_rx_good
++;
385 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
386 * @adapter: address of board private structure
388 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter
*adapter
,
389 struct ixgbevf_ring
*rx_ring
,
392 struct pci_dev
*pdev
= adapter
->pdev
;
393 union ixgbe_adv_rx_desc
*rx_desc
;
394 struct ixgbevf_rx_buffer
*bi
;
397 unsigned int bufsz
= rx_ring
->rx_buf_len
+ NET_IP_ALIGN
;
399 i
= rx_ring
->next_to_use
;
400 bi
= &rx_ring
->rx_buffer_info
[i
];
402 while (cleaned_count
--) {
403 rx_desc
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
406 (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
)) {
408 bi
->page
= netdev_alloc_page(adapter
->netdev
);
410 adapter
->alloc_rx_page_failed
++;
415 /* use a half page if we're re-using */
416 bi
->page_offset
^= (PAGE_SIZE
/ 2);
419 bi
->page_dma
= dma_map_page(&pdev
->dev
, bi
->page
,
427 skb
= netdev_alloc_skb(adapter
->netdev
,
431 adapter
->alloc_rx_buff_failed
++;
436 * Make buffer alignment 2 beyond a 16 byte boundary
437 * this will result in a 16 byte aligned IP header after
438 * the 14 byte MAC header is removed
440 skb_reserve(skb
, NET_IP_ALIGN
);
445 bi
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
449 /* Refresh the desc even if buffer_addrs didn't change because
450 * each write-back erases this info. */
451 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
452 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->page_dma
);
453 rx_desc
->read
.hdr_addr
= cpu_to_le64(bi
->dma
);
455 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
459 if (i
== rx_ring
->count
)
461 bi
= &rx_ring
->rx_buffer_info
[i
];
465 if (rx_ring
->next_to_use
!= i
) {
466 rx_ring
->next_to_use
= i
;
468 i
= (rx_ring
->count
- 1);
470 ixgbevf_release_rx_desc(&adapter
->hw
, rx_ring
, i
);
474 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter
*adapter
,
478 struct ixgbe_hw
*hw
= &adapter
->hw
;
480 mask
= (qmask
& 0xFFFFFFFF);
481 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, mask
);
484 static inline u16
ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc
*rx_desc
)
486 return rx_desc
->wb
.lower
.lo_dword
.hs_rss
.hdr_info
;
489 static inline u16
ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc
*rx_desc
)
491 return rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
494 static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector
*q_vector
,
495 struct ixgbevf_ring
*rx_ring
,
496 int *work_done
, int work_to_do
)
498 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
499 struct pci_dev
*pdev
= adapter
->pdev
;
500 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
501 struct ixgbevf_rx_buffer
*rx_buffer_info
, *next_buffer
;
506 bool cleaned
= false;
507 int cleaned_count
= 0;
508 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
510 i
= rx_ring
->next_to_clean
;
511 rx_desc
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
512 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
513 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
515 while (staterr
& IXGBE_RXD_STAT_DD
) {
517 if (*work_done
>= work_to_do
)
521 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
522 hdr_info
= le16_to_cpu(ixgbevf_get_hdr_info(rx_desc
));
523 len
= (hdr_info
& IXGBE_RXDADV_HDRBUFLEN_MASK
) >>
524 IXGBE_RXDADV_HDRBUFLEN_SHIFT
;
525 if (hdr_info
& IXGBE_RXDADV_SPH
)
526 adapter
->rx_hdr_split
++;
527 if (len
> IXGBEVF_RX_HDR_SIZE
)
528 len
= IXGBEVF_RX_HDR_SIZE
;
529 upper_len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
531 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
534 skb
= rx_buffer_info
->skb
;
535 prefetch(skb
->data
- NET_IP_ALIGN
);
536 rx_buffer_info
->skb
= NULL
;
538 if (rx_buffer_info
->dma
) {
539 dma_unmap_single(&pdev
->dev
, rx_buffer_info
->dma
,
542 rx_buffer_info
->dma
= 0;
547 dma_unmap_page(&pdev
->dev
, rx_buffer_info
->page_dma
,
548 PAGE_SIZE
/ 2, DMA_FROM_DEVICE
);
549 rx_buffer_info
->page_dma
= 0;
550 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
,
551 rx_buffer_info
->page
,
552 rx_buffer_info
->page_offset
,
555 if ((rx_ring
->rx_buf_len
> (PAGE_SIZE
/ 2)) ||
556 (page_count(rx_buffer_info
->page
) != 1))
557 rx_buffer_info
->page
= NULL
;
559 get_page(rx_buffer_info
->page
);
561 skb
->len
+= upper_len
;
562 skb
->data_len
+= upper_len
;
563 skb
->truesize
+= upper_len
;
567 if (i
== rx_ring
->count
)
570 next_rxd
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
574 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
576 if (!(staterr
& IXGBE_RXD_STAT_EOP
)) {
577 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
578 rx_buffer_info
->skb
= next_buffer
->skb
;
579 rx_buffer_info
->dma
= next_buffer
->dma
;
580 next_buffer
->skb
= skb
;
581 next_buffer
->dma
= 0;
583 skb
->next
= next_buffer
->skb
;
584 skb
->next
->prev
= skb
;
586 adapter
->non_eop_descs
++;
590 /* ERR_MASK will only have valid bits if EOP set */
591 if (unlikely(staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
)) {
592 dev_kfree_skb_irq(skb
);
596 ixgbevf_rx_checksum(adapter
, staterr
, skb
);
598 /* probably a little skewed due to removing CRC */
599 total_rx_bytes
+= skb
->len
;
603 * Work around issue of some types of VM to VM loop back
604 * packets not getting split correctly
606 if (staterr
& IXGBE_RXD_STAT_LB
) {
607 u32 header_fixup_len
= skb_headlen(skb
);
608 if (header_fixup_len
< 14)
609 skb_push(skb
, header_fixup_len
);
611 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
613 ixgbevf_receive_skb(q_vector
, skb
, staterr
, rx_ring
, rx_desc
);
616 rx_desc
->wb
.upper
.status_error
= 0;
618 /* return some buffers to hardware, one at a time is too slow */
619 if (cleaned_count
>= IXGBEVF_RX_BUFFER_WRITE
) {
620 ixgbevf_alloc_rx_buffers(adapter
, rx_ring
,
625 /* use prefetched values */
627 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
629 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
632 rx_ring
->next_to_clean
= i
;
633 cleaned_count
= IXGBE_DESC_UNUSED(rx_ring
);
636 ixgbevf_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
638 rx_ring
->total_packets
+= total_rx_packets
;
639 rx_ring
->total_bytes
+= total_rx_bytes
;
640 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
641 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
647 * ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine
648 * @napi: napi struct with our devices info in it
649 * @budget: amount of work driver is allowed to do this pass, in packets
651 * This function is optimized for cleaning one queue only on a single
654 static int ixgbevf_clean_rxonly(struct napi_struct
*napi
, int budget
)
656 struct ixgbevf_q_vector
*q_vector
=
657 container_of(napi
, struct ixgbevf_q_vector
, napi
);
658 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
659 struct ixgbevf_ring
*rx_ring
= NULL
;
663 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
664 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
666 ixgbevf_clean_rx_irq(q_vector
, rx_ring
, &work_done
, budget
);
668 /* If all Rx work done, exit the polling mode */
669 if (work_done
< budget
) {
671 if (adapter
->itr_setting
& 1)
672 ixgbevf_set_itr_msix(q_vector
);
673 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
674 ixgbevf_irq_enable_queues(adapter
, rx_ring
->v_idx
);
681 * ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine
682 * @napi: napi struct with our devices info in it
683 * @budget: amount of work driver is allowed to do this pass, in packets
685 * This function will clean more than one rx queue associated with a
688 static int ixgbevf_clean_rxonly_many(struct napi_struct
*napi
, int budget
)
690 struct ixgbevf_q_vector
*q_vector
=
691 container_of(napi
, struct ixgbevf_q_vector
, napi
);
692 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
693 struct ixgbevf_ring
*rx_ring
= NULL
;
694 int work_done
= 0, i
;
698 /* attempt to distribute budget to each queue fairly, but don't allow
699 * the budget to go below 1 because we'll exit polling */
700 budget
/= (q_vector
->rxr_count
?: 1);
701 budget
= max(budget
, 1);
702 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
703 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
704 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
705 ixgbevf_clean_rx_irq(q_vector
, rx_ring
, &work_done
, budget
);
706 enable_mask
|= rx_ring
->v_idx
;
707 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
711 #ifndef HAVE_NETDEV_NAPI_LIST
712 if (!netif_running(adapter
->netdev
))
716 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
717 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
719 /* If all Rx work done, exit the polling mode */
720 if (work_done
< budget
) {
722 if (adapter
->itr_setting
& 1)
723 ixgbevf_set_itr_msix(q_vector
);
724 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
725 ixgbevf_irq_enable_queues(adapter
, enable_mask
);
733 * ixgbevf_configure_msix - Configure MSI-X hardware
734 * @adapter: board private structure
736 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
739 static void ixgbevf_configure_msix(struct ixgbevf_adapter
*adapter
)
741 struct ixgbevf_q_vector
*q_vector
;
742 struct ixgbe_hw
*hw
= &adapter
->hw
;
743 int i
, j
, q_vectors
, v_idx
, r_idx
;
746 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
749 * Populate the IVAR table and set the ITR values to the
750 * corresponding register.
752 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
753 q_vector
= adapter
->q_vector
[v_idx
];
754 /* XXX for_each_set_bit(...) */
755 r_idx
= find_first_bit(q_vector
->rxr_idx
,
756 adapter
->num_rx_queues
);
758 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
759 j
= adapter
->rx_ring
[r_idx
].reg_idx
;
760 ixgbevf_set_ivar(adapter
, 0, j
, v_idx
);
761 r_idx
= find_next_bit(q_vector
->rxr_idx
,
762 adapter
->num_rx_queues
,
765 r_idx
= find_first_bit(q_vector
->txr_idx
,
766 adapter
->num_tx_queues
);
768 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
769 j
= adapter
->tx_ring
[r_idx
].reg_idx
;
770 ixgbevf_set_ivar(adapter
, 1, j
, v_idx
);
771 r_idx
= find_next_bit(q_vector
->txr_idx
,
772 adapter
->num_tx_queues
,
776 /* if this is a tx only vector halve the interrupt rate */
777 if (q_vector
->txr_count
&& !q_vector
->rxr_count
)
778 q_vector
->eitr
= (adapter
->eitr_param
>> 1);
779 else if (q_vector
->rxr_count
)
781 q_vector
->eitr
= adapter
->eitr_param
;
783 ixgbevf_write_eitr(adapter
, v_idx
, q_vector
->eitr
);
786 ixgbevf_set_ivar(adapter
, -1, 1, v_idx
);
788 /* set up to autoclear timer, and the vectors */
789 mask
= IXGBE_EIMS_ENABLE_MASK
;
790 mask
&= ~IXGBE_EIMS_OTHER
;
791 IXGBE_WRITE_REG(hw
, IXGBE_VTEIAC
, mask
);
798 latency_invalid
= 255
802 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
803 * @adapter: pointer to adapter
804 * @eitr: eitr setting (ints per sec) to give last timeslice
805 * @itr_setting: current throttle rate in ints/second
806 * @packets: the number of packets during this measurement interval
807 * @bytes: the number of bytes during this measurement interval
809 * Stores a new ITR value based on packets and byte
810 * counts during the last interrupt. The advantage of per interrupt
811 * computation is faster updates and more accurate ITR for the current
812 * traffic pattern. Constants in this function were computed
813 * based on theoretical maximum wire speed and thresholds were set based
814 * on testing data as well as attempting to minimize response time
815 * while increasing bulk throughput.
817 static u8
ixgbevf_update_itr(struct ixgbevf_adapter
*adapter
,
818 u32 eitr
, u8 itr_setting
,
819 int packets
, int bytes
)
821 unsigned int retval
= itr_setting
;
826 goto update_itr_done
;
829 /* simple throttlerate management
830 * 0-20MB/s lowest (100000 ints/s)
831 * 20-100MB/s low (20000 ints/s)
832 * 100-1249MB/s bulk (8000 ints/s)
834 /* what was last interrupt timeslice? */
835 timepassed_us
= 1000000/eitr
;
836 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
838 switch (itr_setting
) {
840 if (bytes_perint
> adapter
->eitr_low
)
841 retval
= low_latency
;
844 if (bytes_perint
> adapter
->eitr_high
)
845 retval
= bulk_latency
;
846 else if (bytes_perint
<= adapter
->eitr_low
)
847 retval
= lowest_latency
;
850 if (bytes_perint
<= adapter
->eitr_high
)
851 retval
= low_latency
;
860 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
861 * @adapter: pointer to adapter struct
862 * @v_idx: vector index into q_vector array
863 * @itr_reg: new value to be written in *register* format, not ints/s
865 * This function is made to be called by ethtool and by the driver
866 * when it needs to update VTEITR registers at runtime. Hardware
867 * specific quirks/differences are taken care of here.
869 static void ixgbevf_write_eitr(struct ixgbevf_adapter
*adapter
, int v_idx
,
872 struct ixgbe_hw
*hw
= &adapter
->hw
;
874 itr_reg
= EITR_INTS_PER_SEC_TO_REG(itr_reg
);
877 * set the WDIS bit to not clear the timer bits and cause an
878 * immediate assertion of the interrupt
880 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
882 IXGBE_WRITE_REG(hw
, IXGBE_VTEITR(v_idx
), itr_reg
);
885 static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector
*q_vector
)
887 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
889 u8 current_itr
, ret_itr
;
890 int i
, r_idx
, v_idx
= q_vector
->v_idx
;
891 struct ixgbevf_ring
*rx_ring
, *tx_ring
;
893 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
894 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
895 tx_ring
= &(adapter
->tx_ring
[r_idx
]);
896 ret_itr
= ixgbevf_update_itr(adapter
, q_vector
->eitr
,
898 tx_ring
->total_packets
,
899 tx_ring
->total_bytes
);
900 /* if the result for this queue would decrease interrupt
901 * rate for this vector then use that result */
902 q_vector
->tx_itr
= ((q_vector
->tx_itr
> ret_itr
) ?
903 q_vector
->tx_itr
- 1 : ret_itr
);
904 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
908 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
909 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
910 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
911 ret_itr
= ixgbevf_update_itr(adapter
, q_vector
->eitr
,
913 rx_ring
->total_packets
,
914 rx_ring
->total_bytes
);
915 /* if the result for this queue would decrease interrupt
916 * rate for this vector then use that result */
917 q_vector
->rx_itr
= ((q_vector
->rx_itr
> ret_itr
) ?
918 q_vector
->rx_itr
- 1 : ret_itr
);
919 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
923 current_itr
= max(q_vector
->rx_itr
, q_vector
->tx_itr
);
925 switch (current_itr
) {
926 /* counts and packets in update_itr are dependent on these numbers */
931 new_itr
= 20000; /* aka hwitr = ~200 */
939 if (new_itr
!= q_vector
->eitr
) {
942 /* save the algorithm value here, not the smoothed one */
943 q_vector
->eitr
= new_itr
;
944 /* do an exponential smoothing */
945 new_itr
= ((q_vector
->eitr
* 90)/100) + ((new_itr
* 10)/100);
946 itr_reg
= EITR_INTS_PER_SEC_TO_REG(new_itr
);
947 ixgbevf_write_eitr(adapter
, v_idx
, itr_reg
);
951 static irqreturn_t
ixgbevf_msix_mbx(int irq
, void *data
)
953 struct net_device
*netdev
= data
;
954 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
955 struct ixgbe_hw
*hw
= &adapter
->hw
;
959 eicr
= IXGBE_READ_REG(hw
, IXGBE_VTEICS
);
960 IXGBE_WRITE_REG(hw
, IXGBE_VTEICR
, eicr
);
962 if (!hw
->mbx
.ops
.check_for_ack(hw
)) {
964 * checking for the ack clears the PFACK bit. Place
965 * it back in the v2p_mailbox cache so that anyone
966 * polling for an ack will not miss it. Also
967 * avoid the read below because the code to read
968 * the mailbox will also clear the ack bit. This was
969 * causing lost acks. Just cache the bit and exit
972 hw
->mbx
.v2p_mailbox
|= IXGBE_VFMAILBOX_PFACK
;
976 /* Not an ack interrupt, go ahead and read the message */
977 hw
->mbx
.ops
.read(hw
, &msg
, 1);
979 if ((msg
& IXGBE_MBVFICR_VFREQ_MASK
) == IXGBE_PF_CONTROL_MSG
)
980 mod_timer(&adapter
->watchdog_timer
,
981 round_jiffies(jiffies
+ 1));
987 static irqreturn_t
ixgbevf_msix_clean_tx(int irq
, void *data
)
989 struct ixgbevf_q_vector
*q_vector
= data
;
990 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
991 struct ixgbevf_ring
*tx_ring
;
994 if (!q_vector
->txr_count
)
997 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
998 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
999 tx_ring
= &(adapter
->tx_ring
[r_idx
]);
1000 tx_ring
->total_bytes
= 0;
1001 tx_ring
->total_packets
= 0;
1002 ixgbevf_clean_tx_irq(adapter
, tx_ring
);
1003 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1007 if (adapter
->itr_setting
& 1)
1008 ixgbevf_set_itr_msix(q_vector
);
1014 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1016 * @data: pointer to our q_vector struct for this interrupt vector
1018 static irqreturn_t
ixgbevf_msix_clean_rx(int irq
, void *data
)
1020 struct ixgbevf_q_vector
*q_vector
= data
;
1021 struct ixgbevf_adapter
*adapter
= q_vector
->adapter
;
1022 struct ixgbe_hw
*hw
= &adapter
->hw
;
1023 struct ixgbevf_ring
*rx_ring
;
1027 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1028 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1029 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
1030 rx_ring
->total_bytes
= 0;
1031 rx_ring
->total_packets
= 0;
1032 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1036 if (!q_vector
->rxr_count
)
1039 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1040 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
1041 /* disable interrupts on this vector only */
1042 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMC
, rx_ring
->v_idx
);
1043 napi_schedule(&q_vector
->napi
);
1049 static irqreturn_t
ixgbevf_msix_clean_many(int irq
, void *data
)
1051 ixgbevf_msix_clean_rx(irq
, data
);
1052 ixgbevf_msix_clean_tx(irq
, data
);
1057 static inline void map_vector_to_rxq(struct ixgbevf_adapter
*a
, int v_idx
,
1060 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
1062 set_bit(r_idx
, q_vector
->rxr_idx
);
1063 q_vector
->rxr_count
++;
1064 a
->rx_ring
[r_idx
].v_idx
= 1 << v_idx
;
1067 static inline void map_vector_to_txq(struct ixgbevf_adapter
*a
, int v_idx
,
1070 struct ixgbevf_q_vector
*q_vector
= a
->q_vector
[v_idx
];
1072 set_bit(t_idx
, q_vector
->txr_idx
);
1073 q_vector
->txr_count
++;
1074 a
->tx_ring
[t_idx
].v_idx
= 1 << v_idx
;
1078 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
1079 * @adapter: board private structure to initialize
1081 * This function maps descriptor rings to the queue-specific vectors
1082 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1083 * one vector per ring/queue, but on a constrained vector budget, we
1084 * group the rings as "efficiently" as possible. You would add new
1085 * mapping configurations in here.
1087 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter
*adapter
)
1091 int rxr_idx
= 0, txr_idx
= 0;
1092 int rxr_remaining
= adapter
->num_rx_queues
;
1093 int txr_remaining
= adapter
->num_tx_queues
;
1098 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1101 * The ideal configuration...
1102 * We have enough vectors to map one per queue.
1104 if (q_vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
1105 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
1106 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
1108 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
1109 map_vector_to_txq(adapter
, v_start
, txr_idx
);
1114 * If we don't have enough vectors for a 1-to-1
1115 * mapping, we'll have to group them so there are
1116 * multiple queues per vector.
1118 /* Re-adjusting *qpv takes care of the remainder. */
1119 for (i
= v_start
; i
< q_vectors
; i
++) {
1120 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
1121 for (j
= 0; j
< rqpv
; j
++) {
1122 map_vector_to_rxq(adapter
, i
, rxr_idx
);
1127 for (i
= v_start
; i
< q_vectors
; i
++) {
1128 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
1129 for (j
= 0; j
< tqpv
; j
++) {
1130 map_vector_to_txq(adapter
, i
, txr_idx
);
1141 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
1142 * @adapter: board private structure
1144 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
1145 * interrupts from the kernel.
1147 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter
*adapter
)
1149 struct net_device
*netdev
= adapter
->netdev
;
1150 irqreturn_t (*handler
)(int, void *);
1151 int i
, vector
, q_vectors
, err
;
1154 /* Decrement for Other and TCP Timer vectors */
1155 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1157 #define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \
1158 ? &ixgbevf_msix_clean_many : \
1159 (_v)->rxr_count ? &ixgbevf_msix_clean_rx : \
1160 (_v)->txr_count ? &ixgbevf_msix_clean_tx : \
1162 for (vector
= 0; vector
< q_vectors
; vector
++) {
1163 handler
= SET_HANDLER(adapter
->q_vector
[vector
]);
1165 if (handler
== &ixgbevf_msix_clean_rx
) {
1166 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1167 netdev
->name
, "rx", ri
++);
1168 } else if (handler
== &ixgbevf_msix_clean_tx
) {
1169 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1170 netdev
->name
, "tx", ti
++);
1171 } else if (handler
== &ixgbevf_msix_clean_many
) {
1172 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1173 netdev
->name
, "TxRx", vector
);
1175 /* skip this unused q_vector */
1178 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1179 handler
, 0, adapter
->name
[vector
],
1180 adapter
->q_vector
[vector
]);
1182 hw_dbg(&adapter
->hw
,
1183 "request_irq failed for MSIX interrupt "
1184 "Error: %d\n", err
);
1185 goto free_queue_irqs
;
1189 sprintf(adapter
->name
[vector
], "%s:mbx", netdev
->name
);
1190 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1191 &ixgbevf_msix_mbx
, 0, adapter
->name
[vector
], netdev
);
1193 hw_dbg(&adapter
->hw
,
1194 "request_irq for msix_mbx failed: %d\n", err
);
1195 goto free_queue_irqs
;
1201 for (i
= vector
- 1; i
>= 0; i
--)
1202 free_irq(adapter
->msix_entries
[--vector
].vector
,
1203 &(adapter
->q_vector
[i
]));
1204 pci_disable_msix(adapter
->pdev
);
1205 kfree(adapter
->msix_entries
);
1206 adapter
->msix_entries
= NULL
;
1210 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter
*adapter
)
1212 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1214 for (i
= 0; i
< q_vectors
; i
++) {
1215 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[i
];
1216 bitmap_zero(q_vector
->rxr_idx
, MAX_RX_QUEUES
);
1217 bitmap_zero(q_vector
->txr_idx
, MAX_TX_QUEUES
);
1218 q_vector
->rxr_count
= 0;
1219 q_vector
->txr_count
= 0;
1220 q_vector
->eitr
= adapter
->eitr_param
;
1225 * ixgbevf_request_irq - initialize interrupts
1226 * @adapter: board private structure
1228 * Attempts to configure interrupts using the best available
1229 * capabilities of the hardware and kernel.
1231 static int ixgbevf_request_irq(struct ixgbevf_adapter
*adapter
)
1235 err
= ixgbevf_request_msix_irqs(adapter
);
1238 hw_dbg(&adapter
->hw
,
1239 "request_irq failed, Error %d\n", err
);
1244 static void ixgbevf_free_irq(struct ixgbevf_adapter
*adapter
)
1246 struct net_device
*netdev
= adapter
->netdev
;
1249 q_vectors
= adapter
->num_msix_vectors
;
1253 free_irq(adapter
->msix_entries
[i
].vector
, netdev
);
1256 for (; i
>= 0; i
--) {
1257 free_irq(adapter
->msix_entries
[i
].vector
,
1258 adapter
->q_vector
[i
]);
1261 ixgbevf_reset_q_vectors(adapter
);
1265 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
1266 * @adapter: board private structure
1268 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter
*adapter
)
1271 struct ixgbe_hw
*hw
= &adapter
->hw
;
1273 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMC
, ~0);
1275 IXGBE_WRITE_FLUSH(hw
);
1277 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
1278 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1282 * ixgbevf_irq_enable - Enable default interrupt generation settings
1283 * @adapter: board private structure
1285 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter
*adapter
,
1286 bool queues
, bool flush
)
1288 struct ixgbe_hw
*hw
= &adapter
->hw
;
1292 mask
= (IXGBE_EIMS_ENABLE_MASK
& ~IXGBE_EIMS_RTX_QUEUE
);
1295 IXGBE_WRITE_REG(hw
, IXGBE_VTEIMS
, mask
);
1298 ixgbevf_irq_enable_queues(adapter
, qmask
);
1301 IXGBE_WRITE_FLUSH(hw
);
1305 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1306 * @adapter: board private structure
1308 * Configure the Tx unit of the MAC after a reset.
1310 static void ixgbevf_configure_tx(struct ixgbevf_adapter
*adapter
)
1313 struct ixgbe_hw
*hw
= &adapter
->hw
;
1314 u32 i
, j
, tdlen
, txctrl
;
1316 /* Setup the HW Tx Head and Tail descriptor pointers */
1317 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1318 struct ixgbevf_ring
*ring
= &adapter
->tx_ring
[i
];
1321 tdlen
= ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
1322 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAL(j
),
1323 (tdba
& DMA_BIT_MASK(32)));
1324 IXGBE_WRITE_REG(hw
, IXGBE_VFTDBAH(j
), (tdba
>> 32));
1325 IXGBE_WRITE_REG(hw
, IXGBE_VFTDLEN(j
), tdlen
);
1326 IXGBE_WRITE_REG(hw
, IXGBE_VFTDH(j
), 0);
1327 IXGBE_WRITE_REG(hw
, IXGBE_VFTDT(j
), 0);
1328 adapter
->tx_ring
[i
].head
= IXGBE_VFTDH(j
);
1329 adapter
->tx_ring
[i
].tail
= IXGBE_VFTDT(j
);
1330 /* Disable Tx Head Writeback RO bit, since this hoses
1331 * bookkeeping if things aren't delivered in order.
1333 txctrl
= IXGBE_READ_REG(hw
, IXGBE_VFDCA_TXCTRL(j
));
1334 txctrl
&= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN
;
1335 IXGBE_WRITE_REG(hw
, IXGBE_VFDCA_TXCTRL(j
), txctrl
);
1339 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1341 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter
*adapter
, int index
)
1343 struct ixgbevf_ring
*rx_ring
;
1344 struct ixgbe_hw
*hw
= &adapter
->hw
;
1347 rx_ring
= &adapter
->rx_ring
[index
];
1349 srrctl
= IXGBE_SRRCTL_DROP_EN
;
1351 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
1352 u16 bufsz
= IXGBEVF_RXBUFFER_2048
;
1353 /* grow the amount we can receive on large page machines */
1354 if (bufsz
< (PAGE_SIZE
/ 2))
1355 bufsz
= (PAGE_SIZE
/ 2);
1356 /* cap the bufsz at our largest descriptor size */
1357 bufsz
= min((u16
)IXGBEVF_MAX_RXBUFFER
, bufsz
);
1359 srrctl
|= bufsz
>> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1360 srrctl
|= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
1361 srrctl
|= ((IXGBEVF_RX_HDR_SIZE
<<
1362 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT
) &
1363 IXGBE_SRRCTL_BSIZEHDR_MASK
);
1365 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1367 if (rx_ring
->rx_buf_len
== MAXIMUM_ETHERNET_VLAN_SIZE
)
1368 srrctl
|= IXGBEVF_RXBUFFER_2048
>>
1369 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1371 srrctl
|= rx_ring
->rx_buf_len
>>
1372 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1374 IXGBE_WRITE_REG(hw
, IXGBE_VFSRRCTL(index
), srrctl
);
1378 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1379 * @adapter: board private structure
1381 * Configure the Rx unit of the MAC after a reset.
1383 static void ixgbevf_configure_rx(struct ixgbevf_adapter
*adapter
)
1386 struct ixgbe_hw
*hw
= &adapter
->hw
;
1387 struct net_device
*netdev
= adapter
->netdev
;
1388 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1393 /* Decide whether to use packet split mode or not */
1394 if (netdev
->mtu
> ETH_DATA_LEN
) {
1395 if (adapter
->flags
& IXGBE_FLAG_RX_PS_CAPABLE
)
1396 adapter
->flags
|= IXGBE_FLAG_RX_PS_ENABLED
;
1398 adapter
->flags
&= ~IXGBE_FLAG_RX_PS_ENABLED
;
1400 if (adapter
->flags
& IXGBE_FLAG_RX_1BUF_CAPABLE
)
1401 adapter
->flags
&= ~IXGBE_FLAG_RX_PS_ENABLED
;
1403 adapter
->flags
|= IXGBE_FLAG_RX_PS_ENABLED
;
1406 /* Set the RX buffer length according to the mode */
1407 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
1408 /* PSRTYPE must be initialized in 82599 */
1409 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
1410 IXGBE_PSRTYPE_UDPHDR
|
1411 IXGBE_PSRTYPE_IPV4HDR
|
1412 IXGBE_PSRTYPE_IPV6HDR
|
1413 IXGBE_PSRTYPE_L2HDR
;
1414 IXGBE_WRITE_REG(hw
, IXGBE_VFPSRTYPE
, psrtype
);
1415 rx_buf_len
= IXGBEVF_RX_HDR_SIZE
;
1417 IXGBE_WRITE_REG(hw
, IXGBE_VFPSRTYPE
, 0);
1418 if (netdev
->mtu
<= ETH_DATA_LEN
)
1419 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1421 rx_buf_len
= ALIGN(max_frame
, 1024);
1424 rdlen
= adapter
->rx_ring
[0].count
* sizeof(union ixgbe_adv_rx_desc
);
1425 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1426 * the Base and Length of the Rx Descriptor Ring */
1427 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1428 rdba
= adapter
->rx_ring
[i
].dma
;
1429 j
= adapter
->rx_ring
[i
].reg_idx
;
1430 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAL(j
),
1431 (rdba
& DMA_BIT_MASK(32)));
1432 IXGBE_WRITE_REG(hw
, IXGBE_VFRDBAH(j
), (rdba
>> 32));
1433 IXGBE_WRITE_REG(hw
, IXGBE_VFRDLEN(j
), rdlen
);
1434 IXGBE_WRITE_REG(hw
, IXGBE_VFRDH(j
), 0);
1435 IXGBE_WRITE_REG(hw
, IXGBE_VFRDT(j
), 0);
1436 adapter
->rx_ring
[i
].head
= IXGBE_VFRDH(j
);
1437 adapter
->rx_ring
[i
].tail
= IXGBE_VFRDT(j
);
1438 adapter
->rx_ring
[i
].rx_buf_len
= rx_buf_len
;
1440 ixgbevf_configure_srrctl(adapter
, j
);
1444 static void ixgbevf_vlan_rx_register(struct net_device
*netdev
,
1445 struct vlan_group
*grp
)
1447 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1448 struct ixgbe_hw
*hw
= &adapter
->hw
;
1452 adapter
->vlgrp
= grp
;
1454 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1455 j
= adapter
->rx_ring
[i
].reg_idx
;
1456 ctrl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
));
1457 ctrl
|= IXGBE_RXDCTL_VME
;
1458 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(j
), ctrl
);
1462 static void ixgbevf_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
1464 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1465 struct ixgbe_hw
*hw
= &adapter
->hw
;
1467 /* add VID to filter table */
1468 if (hw
->mac
.ops
.set_vfta
)
1469 hw
->mac
.ops
.set_vfta(hw
, vid
, 0, true);
1472 static void ixgbevf_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
1474 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1475 struct ixgbe_hw
*hw
= &adapter
->hw
;
1477 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
1478 ixgbevf_irq_disable(adapter
);
1480 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
1482 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
1483 ixgbevf_irq_enable(adapter
, true, true);
1485 /* remove VID from filter table */
1486 if (hw
->mac
.ops
.set_vfta
)
1487 hw
->mac
.ops
.set_vfta(hw
, vid
, 0, false);
1490 static void ixgbevf_restore_vlan(struct ixgbevf_adapter
*adapter
)
1492 ixgbevf_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
1494 if (adapter
->vlgrp
) {
1496 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
1497 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
1499 ixgbevf_vlan_rx_add_vid(adapter
->netdev
, vid
);
1505 * ixgbevf_set_rx_mode - Multicast set
1506 * @netdev: network interface device structure
1508 * The set_rx_method entry point is called whenever the multicast address
1509 * list or the network interface flags are updated. This routine is
1510 * responsible for configuring the hardware for proper multicast mode.
1512 static void ixgbevf_set_rx_mode(struct net_device
*netdev
)
1514 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
1515 struct ixgbe_hw
*hw
= &adapter
->hw
;
1517 /* reprogram multicast list */
1518 if (hw
->mac
.ops
.update_mc_addr_list
)
1519 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
1522 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter
*adapter
)
1525 struct ixgbevf_q_vector
*q_vector
;
1526 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1528 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1529 struct napi_struct
*napi
;
1530 q_vector
= adapter
->q_vector
[q_idx
];
1531 if (!q_vector
->rxr_count
)
1533 napi
= &q_vector
->napi
;
1534 if (q_vector
->rxr_count
> 1)
1535 napi
->poll
= &ixgbevf_clean_rxonly_many
;
1541 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter
*adapter
)
1544 struct ixgbevf_q_vector
*q_vector
;
1545 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1547 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
1548 q_vector
= adapter
->q_vector
[q_idx
];
1549 if (!q_vector
->rxr_count
)
1551 napi_disable(&q_vector
->napi
);
1555 static void ixgbevf_configure(struct ixgbevf_adapter
*adapter
)
1557 struct net_device
*netdev
= adapter
->netdev
;
1560 ixgbevf_set_rx_mode(netdev
);
1562 ixgbevf_restore_vlan(adapter
);
1564 ixgbevf_configure_tx(adapter
);
1565 ixgbevf_configure_rx(adapter
);
1566 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1567 struct ixgbevf_ring
*ring
= &adapter
->rx_ring
[i
];
1568 ixgbevf_alloc_rx_buffers(adapter
, ring
, ring
->count
);
1569 ring
->next_to_use
= ring
->count
- 1;
1570 writel(ring
->next_to_use
, adapter
->hw
.hw_addr
+ ring
->tail
);
1574 #define IXGBE_MAX_RX_DESC_POLL 10
1575 static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter
*adapter
,
1578 struct ixgbe_hw
*hw
= &adapter
->hw
;
1579 int j
= adapter
->rx_ring
[rxr
].reg_idx
;
1582 for (k
= 0; k
< IXGBE_MAX_RX_DESC_POLL
; k
++) {
1583 if (IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
)) & IXGBE_RXDCTL_ENABLE
)
1588 if (k
>= IXGBE_MAX_RX_DESC_POLL
) {
1589 hw_dbg(hw
, "RXDCTL.ENABLE on Rx queue %d "
1590 "not set within the polling period\n", rxr
);
1593 ixgbevf_release_rx_desc(&adapter
->hw
, &adapter
->rx_ring
[rxr
],
1594 (adapter
->rx_ring
[rxr
].count
- 1));
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 int ixgbevf_up_complete(struct ixgbevf_adapter
*adapter
)
1637 struct net_device
*netdev
= adapter
->netdev
;
1638 struct ixgbe_hw
*hw
= &adapter
->hw
;
1640 int num_rx_rings
= adapter
->num_rx_queues
;
1643 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1644 j
= adapter
->tx_ring
[i
].reg_idx
;
1645 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1646 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
1647 txdctl
|= (8 << 16);
1648 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
), txdctl
);
1651 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1652 j
= adapter
->tx_ring
[i
].reg_idx
;
1653 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1654 txdctl
|= IXGBE_TXDCTL_ENABLE
;
1655 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
), txdctl
);
1658 for (i
= 0; i
< num_rx_rings
; i
++) {
1659 j
= adapter
->rx_ring
[i
].reg_idx
;
1660 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_VFRXDCTL(j
));
1661 rxdctl
|= IXGBE_RXDCTL_ENABLE
;
1662 IXGBE_WRITE_REG(hw
, IXGBE_VFRXDCTL(j
), rxdctl
);
1663 ixgbevf_rx_desc_queue_enable(adapter
, i
);
1666 ixgbevf_configure_msix(adapter
);
1668 if (hw
->mac
.ops
.set_rar
) {
1669 if (is_valid_ether_addr(hw
->mac
.addr
))
1670 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
1672 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.perm_addr
, 0);
1675 clear_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1676 ixgbevf_napi_enable_all(adapter
);
1678 /* enable transmits */
1679 netif_tx_start_all_queues(netdev
);
1681 ixgbevf_save_reset_stats(adapter
);
1682 ixgbevf_init_last_counter_stats(adapter
);
1684 /* bring the link up in the watchdog, this could race with our first
1685 * link up interrupt but shouldn't be a problem */
1686 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
1687 adapter
->link_check_timeout
= jiffies
;
1688 mod_timer(&adapter
->watchdog_timer
, jiffies
);
1692 int ixgbevf_up(struct ixgbevf_adapter
*adapter
)
1695 struct ixgbe_hw
*hw
= &adapter
->hw
;
1697 ixgbevf_configure(adapter
);
1699 err
= ixgbevf_up_complete(adapter
);
1701 /* clear any pending interrupts, may auto mask */
1702 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
1704 ixgbevf_irq_enable(adapter
, true, true);
1710 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1711 * @adapter: board private structure
1712 * @rx_ring: ring to free buffers from
1714 static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter
*adapter
,
1715 struct ixgbevf_ring
*rx_ring
)
1717 struct pci_dev
*pdev
= adapter
->pdev
;
1721 if (!rx_ring
->rx_buffer_info
)
1724 /* Free all the Rx ring sk_buffs */
1725 for (i
= 0; i
< rx_ring
->count
; i
++) {
1726 struct ixgbevf_rx_buffer
*rx_buffer_info
;
1728 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
1729 if (rx_buffer_info
->dma
) {
1730 dma_unmap_single(&pdev
->dev
, rx_buffer_info
->dma
,
1731 rx_ring
->rx_buf_len
,
1733 rx_buffer_info
->dma
= 0;
1735 if (rx_buffer_info
->skb
) {
1736 struct sk_buff
*skb
= rx_buffer_info
->skb
;
1737 rx_buffer_info
->skb
= NULL
;
1739 struct sk_buff
*this = skb
;
1741 dev_kfree_skb(this);
1744 if (!rx_buffer_info
->page
)
1746 dma_unmap_page(&pdev
->dev
, rx_buffer_info
->page_dma
,
1747 PAGE_SIZE
/ 2, DMA_FROM_DEVICE
);
1748 rx_buffer_info
->page_dma
= 0;
1749 put_page(rx_buffer_info
->page
);
1750 rx_buffer_info
->page
= NULL
;
1751 rx_buffer_info
->page_offset
= 0;
1754 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
1755 memset(rx_ring
->rx_buffer_info
, 0, size
);
1757 /* Zero out the descriptor ring */
1758 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1760 rx_ring
->next_to_clean
= 0;
1761 rx_ring
->next_to_use
= 0;
1764 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1766 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1770 * ixgbevf_clean_tx_ring - Free Tx Buffers
1771 * @adapter: board private structure
1772 * @tx_ring: ring to be cleaned
1774 static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter
*adapter
,
1775 struct ixgbevf_ring
*tx_ring
)
1777 struct ixgbevf_tx_buffer
*tx_buffer_info
;
1781 if (!tx_ring
->tx_buffer_info
)
1784 /* Free all the Tx ring sk_buffs */
1786 for (i
= 0; i
< tx_ring
->count
; i
++) {
1787 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
1788 ixgbevf_unmap_and_free_tx_resource(adapter
, tx_buffer_info
);
1791 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
1792 memset(tx_ring
->tx_buffer_info
, 0, size
);
1794 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1796 tx_ring
->next_to_use
= 0;
1797 tx_ring
->next_to_clean
= 0;
1800 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1802 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1806 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1807 * @adapter: board private structure
1809 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter
*adapter
)
1813 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1814 ixgbevf_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1818 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1819 * @adapter: board private structure
1821 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter
*adapter
)
1825 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1826 ixgbevf_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1829 void ixgbevf_down(struct ixgbevf_adapter
*adapter
)
1831 struct net_device
*netdev
= adapter
->netdev
;
1832 struct ixgbe_hw
*hw
= &adapter
->hw
;
1836 /* signal that we are down to the interrupt handler */
1837 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
1838 /* disable receives */
1840 netif_tx_disable(netdev
);
1844 netif_tx_stop_all_queues(netdev
);
1846 ixgbevf_irq_disable(adapter
);
1848 ixgbevf_napi_disable_all(adapter
);
1850 del_timer_sync(&adapter
->watchdog_timer
);
1851 /* can't call flush scheduled work here because it can deadlock
1852 * if linkwatch_event tries to acquire the rtnl_lock which we are
1854 while (adapter
->flags
& IXGBE_FLAG_IN_WATCHDOG_TASK
)
1857 /* disable transmits in the hardware now that interrupts are off */
1858 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1859 j
= adapter
->tx_ring
[i
].reg_idx
;
1860 txdctl
= IXGBE_READ_REG(hw
, IXGBE_VFTXDCTL(j
));
1861 IXGBE_WRITE_REG(hw
, IXGBE_VFTXDCTL(j
),
1862 (txdctl
& ~IXGBE_TXDCTL_ENABLE
));
1865 netif_carrier_off(netdev
);
1867 if (!pci_channel_offline(adapter
->pdev
))
1868 ixgbevf_reset(adapter
);
1870 ixgbevf_clean_all_tx_rings(adapter
);
1871 ixgbevf_clean_all_rx_rings(adapter
);
1874 void ixgbevf_reinit_locked(struct ixgbevf_adapter
*adapter
)
1876 struct ixgbe_hw
*hw
= &adapter
->hw
;
1878 WARN_ON(in_interrupt());
1880 while (test_and_set_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
1884 * Check if PF is up before re-init. If not then skip until
1885 * later when the PF is up and ready to service requests from
1886 * the VF via mailbox. If the VF is up and running then the
1887 * watchdog task will continue to schedule reset tasks until
1888 * the PF is up and running.
1890 if (!hw
->mac
.ops
.reset_hw(hw
)) {
1891 ixgbevf_down(adapter
);
1892 ixgbevf_up(adapter
);
1895 clear_bit(__IXGBEVF_RESETTING
, &adapter
->state
);
1898 void ixgbevf_reset(struct ixgbevf_adapter
*adapter
)
1900 struct ixgbe_hw
*hw
= &adapter
->hw
;
1901 struct net_device
*netdev
= adapter
->netdev
;
1903 if (hw
->mac
.ops
.reset_hw(hw
))
1904 hw_dbg(hw
, "PF still resetting\n");
1906 hw
->mac
.ops
.init_hw(hw
);
1908 if (is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
1909 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
,
1911 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
,
1916 static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter
*adapter
,
1919 int err
, vector_threshold
;
1921 /* We'll want at least 3 (vector_threshold):
1924 * 3) Other (Link Status Change, etc.)
1926 vector_threshold
= MIN_MSIX_COUNT
;
1928 /* The more we get, the more we will assign to Tx/Rx Cleanup
1929 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1930 * Right now, we simply care about how many we'll get; we'll
1931 * set them up later while requesting irq's.
1933 while (vectors
>= vector_threshold
) {
1934 err
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
1936 if (!err
) /* Success in acquiring all requested vectors. */
1939 vectors
= 0; /* Nasty failure, quit now */
1940 else /* err == number of vectors we should try again with */
1944 if (vectors
< vector_threshold
) {
1945 /* Can't allocate enough MSI-X interrupts? Oh well.
1946 * This just means we'll go with either a single MSI
1947 * vector or fall back to legacy interrupts.
1949 hw_dbg(&adapter
->hw
,
1950 "Unable to allocate MSI-X interrupts\n");
1951 kfree(adapter
->msix_entries
);
1952 adapter
->msix_entries
= NULL
;
1955 * Adjust for only the vectors we'll use, which is minimum
1956 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1957 * vectors we were allocated.
1959 adapter
->num_msix_vectors
= vectors
;
1964 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
1965 * @adapter: board private structure to initialize
1967 * This is the top level queue allocation routine. The order here is very
1968 * important, starting with the "most" number of features turned on at once,
1969 * and ending with the smallest set of features. This way large combinations
1970 * can be allocated if they're turned on, and smaller combinations are the
1971 * fallthrough conditions.
1974 static void ixgbevf_set_num_queues(struct ixgbevf_adapter
*adapter
)
1976 /* Start with base case */
1977 adapter
->num_rx_queues
= 1;
1978 adapter
->num_tx_queues
= 1;
1979 adapter
->num_rx_pools
= adapter
->num_rx_queues
;
1980 adapter
->num_rx_queues_per_pool
= 1;
1984 * ixgbevf_alloc_queues - Allocate memory for all rings
1985 * @adapter: board private structure to initialize
1987 * We allocate one ring per queue at run-time since we don't know the
1988 * number of queues at compile-time. The polling_netdev array is
1989 * intended for Multiqueue, but should work fine with a single queue.
1991 static int ixgbevf_alloc_queues(struct ixgbevf_adapter
*adapter
)
1995 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1996 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
1997 if (!adapter
->tx_ring
)
1998 goto err_tx_ring_allocation
;
2000 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
2001 sizeof(struct ixgbevf_ring
), GFP_KERNEL
);
2002 if (!adapter
->rx_ring
)
2003 goto err_rx_ring_allocation
;
2005 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2006 adapter
->tx_ring
[i
].count
= adapter
->tx_ring_count
;
2007 adapter
->tx_ring
[i
].queue_index
= i
;
2008 adapter
->tx_ring
[i
].reg_idx
= i
;
2011 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2012 adapter
->rx_ring
[i
].count
= adapter
->rx_ring_count
;
2013 adapter
->rx_ring
[i
].queue_index
= i
;
2014 adapter
->rx_ring
[i
].reg_idx
= i
;
2019 err_rx_ring_allocation
:
2020 kfree(adapter
->tx_ring
);
2021 err_tx_ring_allocation
:
2026 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
2027 * @adapter: board private structure to initialize
2029 * Attempt to configure the interrupts using the best available
2030 * capabilities of the hardware and the kernel.
2032 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter
*adapter
)
2035 int vector
, v_budget
;
2038 * It's easy to be greedy for MSI-X vectors, but it really
2039 * doesn't do us much good if we have a lot more vectors
2040 * than CPU's. So let's be conservative and only ask for
2041 * (roughly) twice the number of vectors as there are CPU's.
2043 v_budget
= min(adapter
->num_rx_queues
+ adapter
->num_tx_queues
,
2044 (int)(num_online_cpus() * 2)) + NON_Q_VECTORS
;
2046 /* A failure in MSI-X entry allocation isn't fatal, but it does
2047 * mean we disable MSI-X capabilities of the adapter. */
2048 adapter
->msix_entries
= kcalloc(v_budget
,
2049 sizeof(struct msix_entry
), GFP_KERNEL
);
2050 if (!adapter
->msix_entries
) {
2055 for (vector
= 0; vector
< v_budget
; vector
++)
2056 adapter
->msix_entries
[vector
].entry
= vector
;
2058 ixgbevf_acquire_msix_vectors(adapter
, v_budget
);
2065 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
2066 * @adapter: board private structure to initialize
2068 * We allocate one q_vector per queue interrupt. If allocation fails we
2071 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter
*adapter
)
2073 int q_idx
, num_q_vectors
;
2074 struct ixgbevf_q_vector
*q_vector
;
2076 int (*poll
)(struct napi_struct
*, int);
2078 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2079 napi_vectors
= adapter
->num_rx_queues
;
2080 poll
= &ixgbevf_clean_rxonly
;
2082 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
2083 q_vector
= kzalloc(sizeof(struct ixgbevf_q_vector
), GFP_KERNEL
);
2086 q_vector
->adapter
= adapter
;
2087 q_vector
->v_idx
= q_idx
;
2088 q_vector
->eitr
= adapter
->eitr_param
;
2089 if (q_idx
< napi_vectors
)
2090 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
2092 adapter
->q_vector
[q_idx
] = q_vector
;
2100 q_vector
= adapter
->q_vector
[q_idx
];
2101 netif_napi_del(&q_vector
->napi
);
2103 adapter
->q_vector
[q_idx
] = NULL
;
2109 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
2110 * @adapter: board private structure to initialize
2112 * This function frees the memory allocated to the q_vectors. In addition if
2113 * NAPI is enabled it will delete any references to the NAPI struct prior
2114 * to freeing the q_vector.
2116 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter
*adapter
)
2118 int q_idx
, num_q_vectors
;
2121 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2122 napi_vectors
= adapter
->num_rx_queues
;
2124 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
2125 struct ixgbevf_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
2127 adapter
->q_vector
[q_idx
] = NULL
;
2128 if (q_idx
< napi_vectors
)
2129 netif_napi_del(&q_vector
->napi
);
2135 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
2136 * @adapter: board private structure
2139 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter
*adapter
)
2141 pci_disable_msix(adapter
->pdev
);
2142 kfree(adapter
->msix_entries
);
2143 adapter
->msix_entries
= NULL
;
2147 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
2148 * @adapter: board private structure to initialize
2151 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter
*adapter
)
2155 /* Number of supported queues */
2156 ixgbevf_set_num_queues(adapter
);
2158 err
= ixgbevf_set_interrupt_capability(adapter
);
2160 hw_dbg(&adapter
->hw
,
2161 "Unable to setup interrupt capabilities\n");
2162 goto err_set_interrupt
;
2165 err
= ixgbevf_alloc_q_vectors(adapter
);
2167 hw_dbg(&adapter
->hw
, "Unable to allocate memory for queue "
2169 goto err_alloc_q_vectors
;
2172 err
= ixgbevf_alloc_queues(adapter
);
2174 printk(KERN_ERR
"Unable to allocate memory for queues\n");
2175 goto err_alloc_queues
;
2178 hw_dbg(&adapter
->hw
, "Multiqueue %s: Rx Queue count = %u, "
2179 "Tx Queue count = %u\n",
2180 (adapter
->num_rx_queues
> 1) ? "Enabled" :
2181 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
2183 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2187 ixgbevf_free_q_vectors(adapter
);
2188 err_alloc_q_vectors
:
2189 ixgbevf_reset_interrupt_capability(adapter
);
2195 * ixgbevf_sw_init - Initialize general software structures
2196 * (struct ixgbevf_adapter)
2197 * @adapter: board private structure to initialize
2199 * ixgbevf_sw_init initializes the Adapter private data structure.
2200 * Fields are initialized based on PCI device information and
2201 * OS network device settings (MTU size).
2203 static int __devinit
ixgbevf_sw_init(struct ixgbevf_adapter
*adapter
)
2205 struct ixgbe_hw
*hw
= &adapter
->hw
;
2206 struct pci_dev
*pdev
= adapter
->pdev
;
2209 /* PCI config space info */
2211 hw
->vendor_id
= pdev
->vendor
;
2212 hw
->device_id
= pdev
->device
;
2213 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
2214 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2215 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2217 hw
->mbx
.ops
.init_params(hw
);
2218 hw
->mac
.max_tx_queues
= MAX_TX_QUEUES
;
2219 hw
->mac
.max_rx_queues
= MAX_RX_QUEUES
;
2220 err
= hw
->mac
.ops
.reset_hw(hw
);
2222 dev_info(&pdev
->dev
,
2223 "PF still in reset state, assigning new address\n");
2224 dev_hw_addr_random(adapter
->netdev
, hw
->mac
.addr
);
2226 err
= hw
->mac
.ops
.init_hw(hw
);
2228 printk(KERN_ERR
"init_shared_code failed: %d\n", err
);
2233 /* Enable dynamic interrupt throttling rates */
2234 adapter
->eitr_param
= 20000;
2235 adapter
->itr_setting
= 1;
2237 /* set defaults for eitr in MegaBytes */
2238 adapter
->eitr_low
= 10;
2239 adapter
->eitr_high
= 20;
2241 /* set default ring sizes */
2242 adapter
->tx_ring_count
= IXGBEVF_DEFAULT_TXD
;
2243 adapter
->rx_ring_count
= IXGBEVF_DEFAULT_RXD
;
2245 /* enable rx csum by default */
2246 adapter
->flags
|= IXGBE_FLAG_RX_CSUM_ENABLED
;
2248 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
2254 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2256 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2257 if (current_counter < last_counter) \
2258 counter += 0x100000000LL; \
2259 last_counter = current_counter; \
2260 counter &= 0xFFFFFFFF00000000LL; \
2261 counter |= current_counter; \
2264 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2266 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2267 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2268 u64 current_counter = (current_counter_msb << 32) | \
2269 current_counter_lsb; \
2270 if (current_counter < last_counter) \
2271 counter += 0x1000000000LL; \
2272 last_counter = current_counter; \
2273 counter &= 0xFFFFFFF000000000LL; \
2274 counter |= current_counter; \
2277 * ixgbevf_update_stats - Update the board statistics counters.
2278 * @adapter: board private structure
2280 void ixgbevf_update_stats(struct ixgbevf_adapter
*adapter
)
2282 struct ixgbe_hw
*hw
= &adapter
->hw
;
2284 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC
, adapter
->stats
.last_vfgprc
,
2285 adapter
->stats
.vfgprc
);
2286 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC
, adapter
->stats
.last_vfgptc
,
2287 adapter
->stats
.vfgptc
);
2288 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB
, IXGBE_VFGORC_MSB
,
2289 adapter
->stats
.last_vfgorc
,
2290 adapter
->stats
.vfgorc
);
2291 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB
, IXGBE_VFGOTC_MSB
,
2292 adapter
->stats
.last_vfgotc
,
2293 adapter
->stats
.vfgotc
);
2294 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC
, adapter
->stats
.last_vfmprc
,
2295 adapter
->stats
.vfmprc
);
2297 /* Fill out the OS statistics structure */
2298 adapter
->net_stats
.multicast
= adapter
->stats
.vfmprc
-
2299 adapter
->stats
.base_vfmprc
;
2303 * ixgbevf_watchdog - Timer Call-back
2304 * @data: pointer to adapter cast into an unsigned long
2306 static void ixgbevf_watchdog(unsigned long data
)
2308 struct ixgbevf_adapter
*adapter
= (struct ixgbevf_adapter
*)data
;
2309 struct ixgbe_hw
*hw
= &adapter
->hw
;
2314 * Do the watchdog outside of interrupt context due to the lovely
2315 * delays that some of the newer hardware requires
2318 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2319 goto watchdog_short_circuit
;
2321 /* get one bit for every active tx/rx interrupt vector */
2322 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
2323 struct ixgbevf_q_vector
*qv
= adapter
->q_vector
[i
];
2324 if (qv
->rxr_count
|| qv
->txr_count
)
2328 IXGBE_WRITE_REG(hw
, IXGBE_VTEICS
, (u32
)eics
);
2330 watchdog_short_circuit
:
2331 schedule_work(&adapter
->watchdog_task
);
2335 * ixgbevf_tx_timeout - Respond to a Tx Hang
2336 * @netdev: network interface device structure
2338 static void ixgbevf_tx_timeout(struct net_device
*netdev
)
2340 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2342 /* Do the reset outside of interrupt context */
2343 schedule_work(&adapter
->reset_task
);
2346 static void ixgbevf_reset_task(struct work_struct
*work
)
2348 struct ixgbevf_adapter
*adapter
;
2349 adapter
= container_of(work
, struct ixgbevf_adapter
, reset_task
);
2351 /* If we're already down or resetting, just bail */
2352 if (test_bit(__IXGBEVF_DOWN
, &adapter
->state
) ||
2353 test_bit(__IXGBEVF_RESETTING
, &adapter
->state
))
2356 adapter
->tx_timeout_count
++;
2358 ixgbevf_reinit_locked(adapter
);
2362 * ixgbevf_watchdog_task - worker thread to bring link up
2363 * @work: pointer to work_struct containing our data
2365 static void ixgbevf_watchdog_task(struct work_struct
*work
)
2367 struct ixgbevf_adapter
*adapter
= container_of(work
,
2368 struct ixgbevf_adapter
,
2370 struct net_device
*netdev
= adapter
->netdev
;
2371 struct ixgbe_hw
*hw
= &adapter
->hw
;
2372 u32 link_speed
= adapter
->link_speed
;
2373 bool link_up
= adapter
->link_up
;
2375 adapter
->flags
|= IXGBE_FLAG_IN_WATCHDOG_TASK
;
2378 * Always check the link on the watchdog because we have
2381 if (hw
->mac
.ops
.check_link
) {
2382 if ((hw
->mac
.ops
.check_link(hw
, &link_speed
,
2383 &link_up
, false)) != 0) {
2384 adapter
->link_up
= link_up
;
2385 adapter
->link_speed
= link_speed
;
2386 netif_carrier_off(netdev
);
2387 netif_tx_stop_all_queues(netdev
);
2388 schedule_work(&adapter
->reset_task
);
2392 /* always assume link is up, if no check link
2394 link_speed
= IXGBE_LINK_SPEED_10GB_FULL
;
2397 adapter
->link_up
= link_up
;
2398 adapter
->link_speed
= link_speed
;
2401 if (!netif_carrier_ok(netdev
)) {
2402 hw_dbg(&adapter
->hw
, "NIC Link is Up, %u Gbps\n",
2403 (link_speed
== IXGBE_LINK_SPEED_10GB_FULL
) ?
2405 netif_carrier_on(netdev
);
2406 netif_tx_wake_all_queues(netdev
);
2408 /* Force detection of hung controller */
2409 adapter
->detect_tx_hung
= true;
2412 adapter
->link_up
= false;
2413 adapter
->link_speed
= 0;
2414 if (netif_carrier_ok(netdev
)) {
2415 hw_dbg(&adapter
->hw
, "NIC Link is Down\n");
2416 netif_carrier_off(netdev
);
2417 netif_tx_stop_all_queues(netdev
);
2421 ixgbevf_update_stats(adapter
);
2424 /* Force detection of hung controller every watchdog period */
2425 adapter
->detect_tx_hung
= true;
2427 /* Reset the timer */
2428 if (!test_bit(__IXGBEVF_DOWN
, &adapter
->state
))
2429 mod_timer(&adapter
->watchdog_timer
,
2430 round_jiffies(jiffies
+ (2 * HZ
)));
2432 adapter
->flags
&= ~IXGBE_FLAG_IN_WATCHDOG_TASK
;
2436 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2437 * @adapter: board private structure
2438 * @tx_ring: Tx descriptor ring for a specific queue
2440 * Free all transmit software resources
2442 void ixgbevf_free_tx_resources(struct ixgbevf_adapter
*adapter
,
2443 struct ixgbevf_ring
*tx_ring
)
2445 struct pci_dev
*pdev
= adapter
->pdev
;
2447 ixgbevf_clean_tx_ring(adapter
, tx_ring
);
2449 vfree(tx_ring
->tx_buffer_info
);
2450 tx_ring
->tx_buffer_info
= NULL
;
2452 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2455 tx_ring
->desc
= NULL
;
2459 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2460 * @adapter: board private structure
2462 * Free all transmit software resources
2464 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2468 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2469 if (adapter
->tx_ring
[i
].desc
)
2470 ixgbevf_free_tx_resources(adapter
,
2471 &adapter
->tx_ring
[i
]);
2476 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2477 * @adapter: board private structure
2478 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2480 * Return 0 on success, negative on failure
2482 int ixgbevf_setup_tx_resources(struct ixgbevf_adapter
*adapter
,
2483 struct ixgbevf_ring
*tx_ring
)
2485 struct pci_dev
*pdev
= adapter
->pdev
;
2488 size
= sizeof(struct ixgbevf_tx_buffer
) * tx_ring
->count
;
2489 tx_ring
->tx_buffer_info
= vmalloc(size
);
2490 if (!tx_ring
->tx_buffer_info
)
2492 memset(tx_ring
->tx_buffer_info
, 0, size
);
2494 /* round up to nearest 4K */
2495 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
2496 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2498 tx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, tx_ring
->size
,
2499 &tx_ring
->dma
, GFP_KERNEL
);
2503 tx_ring
->next_to_use
= 0;
2504 tx_ring
->next_to_clean
= 0;
2505 tx_ring
->work_limit
= tx_ring
->count
;
2509 vfree(tx_ring
->tx_buffer_info
);
2510 tx_ring
->tx_buffer_info
= NULL
;
2511 hw_dbg(&adapter
->hw
, "Unable to allocate memory for the transmit "
2512 "descriptor ring\n");
2517 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2518 * @adapter: board private structure
2520 * If this function returns with an error, then it's possible one or
2521 * more of the rings is populated (while the rest are not). It is the
2522 * callers duty to clean those orphaned rings.
2524 * Return 0 on success, negative on failure
2526 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter
*adapter
)
2530 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2531 err
= ixgbevf_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2534 hw_dbg(&adapter
->hw
,
2535 "Allocation for Tx Queue %u failed\n", i
);
2543 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2544 * @adapter: board private structure
2545 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2547 * Returns 0 on success, negative on failure
2549 int ixgbevf_setup_rx_resources(struct ixgbevf_adapter
*adapter
,
2550 struct ixgbevf_ring
*rx_ring
)
2552 struct pci_dev
*pdev
= adapter
->pdev
;
2555 size
= sizeof(struct ixgbevf_rx_buffer
) * rx_ring
->count
;
2556 rx_ring
->rx_buffer_info
= vmalloc(size
);
2557 if (!rx_ring
->rx_buffer_info
) {
2558 hw_dbg(&adapter
->hw
,
2559 "Unable to vmalloc buffer memory for "
2560 "the receive descriptor ring\n");
2563 memset(rx_ring
->rx_buffer_info
, 0, size
);
2565 /* Round up to nearest 4K */
2566 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
2567 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2569 rx_ring
->desc
= dma_alloc_coherent(&pdev
->dev
, rx_ring
->size
,
2570 &rx_ring
->dma
, GFP_KERNEL
);
2572 if (!rx_ring
->desc
) {
2573 hw_dbg(&adapter
->hw
,
2574 "Unable to allocate memory for "
2575 "the receive descriptor ring\n");
2576 vfree(rx_ring
->rx_buffer_info
);
2577 rx_ring
->rx_buffer_info
= NULL
;
2581 rx_ring
->next_to_clean
= 0;
2582 rx_ring
->next_to_use
= 0;
2590 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2591 * @adapter: board private structure
2593 * If this function returns with an error, then it's possible one or
2594 * more of the rings is populated (while the rest are not). It is the
2595 * callers duty to clean those orphaned rings.
2597 * Return 0 on success, negative on failure
2599 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2603 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2604 err
= ixgbevf_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2607 hw_dbg(&adapter
->hw
,
2608 "Allocation for Rx Queue %u failed\n", i
);
2615 * ixgbevf_free_rx_resources - Free Rx Resources
2616 * @adapter: board private structure
2617 * @rx_ring: ring to clean the resources from
2619 * Free all receive software resources
2621 void ixgbevf_free_rx_resources(struct ixgbevf_adapter
*adapter
,
2622 struct ixgbevf_ring
*rx_ring
)
2624 struct pci_dev
*pdev
= adapter
->pdev
;
2626 ixgbevf_clean_rx_ring(adapter
, rx_ring
);
2628 vfree(rx_ring
->rx_buffer_info
);
2629 rx_ring
->rx_buffer_info
= NULL
;
2631 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2634 rx_ring
->desc
= NULL
;
2638 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2639 * @adapter: board private structure
2641 * Free all receive software resources
2643 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter
*adapter
)
2647 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2648 if (adapter
->rx_ring
[i
].desc
)
2649 ixgbevf_free_rx_resources(adapter
,
2650 &adapter
->rx_ring
[i
]);
2654 * ixgbevf_open - Called when a network interface is made active
2655 * @netdev: network interface device structure
2657 * Returns 0 on success, negative value on failure
2659 * The open entry point is called when a network interface is made
2660 * active by the system (IFF_UP). At this point all resources needed
2661 * for transmit and receive operations are allocated, the interrupt
2662 * handler is registered with the OS, the watchdog timer is started,
2663 * and the stack is notified that the interface is ready.
2665 static int ixgbevf_open(struct net_device
*netdev
)
2667 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2668 struct ixgbe_hw
*hw
= &adapter
->hw
;
2671 /* disallow open during test */
2672 if (test_bit(__IXGBEVF_TESTING
, &adapter
->state
))
2675 if (hw
->adapter_stopped
) {
2676 ixgbevf_reset(adapter
);
2677 /* if adapter is still stopped then PF isn't up and
2678 * the vf can't start. */
2679 if (hw
->adapter_stopped
) {
2680 err
= IXGBE_ERR_MBX
;
2681 printk(KERN_ERR
"Unable to start - perhaps the PF"
2682 " Driver isn't up yet\n");
2683 goto err_setup_reset
;
2687 /* allocate transmit descriptors */
2688 err
= ixgbevf_setup_all_tx_resources(adapter
);
2692 /* allocate receive descriptors */
2693 err
= ixgbevf_setup_all_rx_resources(adapter
);
2697 ixgbevf_configure(adapter
);
2700 * Map the Tx/Rx rings to the vectors we were allotted.
2701 * if request_irq will be called in this function map_rings
2702 * must be called *before* up_complete
2704 ixgbevf_map_rings_to_vectors(adapter
);
2706 err
= ixgbevf_up_complete(adapter
);
2710 /* clear any pending interrupts, may auto mask */
2711 IXGBE_READ_REG(hw
, IXGBE_VTEICR
);
2712 err
= ixgbevf_request_irq(adapter
);
2716 ixgbevf_irq_enable(adapter
, true, true);
2721 ixgbevf_down(adapter
);
2723 ixgbevf_free_irq(adapter
);
2725 ixgbevf_free_all_rx_resources(adapter
);
2727 ixgbevf_free_all_tx_resources(adapter
);
2728 ixgbevf_reset(adapter
);
2736 * ixgbevf_close - Disables a network interface
2737 * @netdev: network interface device structure
2739 * Returns 0, this is not allowed to fail
2741 * The close entry point is called when an interface is de-activated
2742 * by the OS. The hardware is still under the drivers control, but
2743 * needs to be disabled. A global MAC reset is issued to stop the
2744 * hardware, and all transmit and receive resources are freed.
2746 static int ixgbevf_close(struct net_device
*netdev
)
2748 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
2750 ixgbevf_down(adapter
);
2751 ixgbevf_free_irq(adapter
);
2753 ixgbevf_free_all_tx_resources(adapter
);
2754 ixgbevf_free_all_rx_resources(adapter
);
2759 static int ixgbevf_tso(struct ixgbevf_adapter
*adapter
,
2760 struct ixgbevf_ring
*tx_ring
,
2761 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2763 struct ixgbe_adv_tx_context_desc
*context_desc
;
2766 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2767 u32 vlan_macip_lens
= 0, type_tucmd_mlhl
;
2768 u32 mss_l4len_idx
, l4len
;
2770 if (skb_is_gso(skb
)) {
2771 if (skb_header_cloned(skb
)) {
2772 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2776 l4len
= tcp_hdrlen(skb
);
2779 if (skb
->protocol
== htons(ETH_P_IP
)) {
2780 struct iphdr
*iph
= ip_hdr(skb
);
2783 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2787 adapter
->hw_tso_ctxt
++;
2788 } else if (skb_is_gso_v6(skb
)) {
2789 ipv6_hdr(skb
)->payload_len
= 0;
2790 tcp_hdr(skb
)->check
=
2791 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2792 &ipv6_hdr(skb
)->daddr
,
2794 adapter
->hw_tso6_ctxt
++;
2797 i
= tx_ring
->next_to_use
;
2799 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2800 context_desc
= IXGBE_TX_CTXTDESC_ADV(*tx_ring
, i
);
2802 /* VLAN MACLEN IPLEN */
2803 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
2805 (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
);
2806 vlan_macip_lens
|= ((skb_network_offset(skb
)) <<
2807 IXGBE_ADVTXD_MACLEN_SHIFT
);
2808 *hdr_len
+= skb_network_offset(skb
);
2810 (skb_transport_header(skb
) - skb_network_header(skb
));
2812 (skb_transport_header(skb
) - skb_network_header(skb
));
2813 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
2814 context_desc
->seqnum_seed
= 0;
2816 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2817 type_tucmd_mlhl
= (IXGBE_TXD_CMD_DEXT
|
2818 IXGBE_ADVTXD_DTYP_CTXT
);
2820 if (skb
->protocol
== htons(ETH_P_IP
))
2821 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2822 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2823 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd_mlhl
);
2827 (skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
);
2828 mss_l4len_idx
|= (l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
);
2829 /* use index 1 for TSO */
2830 mss_l4len_idx
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
2831 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2833 tx_buffer_info
->time_stamp
= jiffies
;
2834 tx_buffer_info
->next_to_watch
= i
;
2837 if (i
== tx_ring
->count
)
2839 tx_ring
->next_to_use
= i
;
2847 static bool ixgbevf_tx_csum(struct ixgbevf_adapter
*adapter
,
2848 struct ixgbevf_ring
*tx_ring
,
2849 struct sk_buff
*skb
, u32 tx_flags
)
2851 struct ixgbe_adv_tx_context_desc
*context_desc
;
2853 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2854 u32 vlan_macip_lens
= 0, type_tucmd_mlhl
= 0;
2856 if (skb
->ip_summed
== CHECKSUM_PARTIAL
||
2857 (tx_flags
& IXGBE_TX_FLAGS_VLAN
)) {
2858 i
= tx_ring
->next_to_use
;
2859 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2860 context_desc
= IXGBE_TX_CTXTDESC_ADV(*tx_ring
, i
);
2862 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
2863 vlan_macip_lens
|= (tx_flags
&
2864 IXGBE_TX_FLAGS_VLAN_MASK
);
2865 vlan_macip_lens
|= (skb_network_offset(skb
) <<
2866 IXGBE_ADVTXD_MACLEN_SHIFT
);
2867 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2868 vlan_macip_lens
|= (skb_transport_header(skb
) -
2869 skb_network_header(skb
));
2871 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
2872 context_desc
->seqnum_seed
= 0;
2874 type_tucmd_mlhl
|= (IXGBE_TXD_CMD_DEXT
|
2875 IXGBE_ADVTXD_DTYP_CTXT
);
2877 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2878 switch (skb
->protocol
) {
2879 case __constant_htons(ETH_P_IP
):
2880 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_IPV4
;
2881 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2883 IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2885 case __constant_htons(ETH_P_IPV6
):
2886 /* XXX what about other V6 headers?? */
2887 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2889 IXGBE_ADVTXD_TUCMD_L4T_TCP
;
2892 if (unlikely(net_ratelimit())) {
2894 "partial checksum but "
2902 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd_mlhl
);
2903 /* use index zero for tx checksum offload */
2904 context_desc
->mss_l4len_idx
= 0;
2906 tx_buffer_info
->time_stamp
= jiffies
;
2907 tx_buffer_info
->next_to_watch
= i
;
2909 adapter
->hw_csum_tx_good
++;
2911 if (i
== tx_ring
->count
)
2913 tx_ring
->next_to_use
= i
;
2921 static int ixgbevf_tx_map(struct ixgbevf_adapter
*adapter
,
2922 struct ixgbevf_ring
*tx_ring
,
2923 struct sk_buff
*skb
, u32 tx_flags
,
2926 struct pci_dev
*pdev
= adapter
->pdev
;
2927 struct ixgbevf_tx_buffer
*tx_buffer_info
;
2929 unsigned int total
= skb
->len
;
2930 unsigned int offset
= 0, size
;
2932 unsigned int nr_frags
= skb_shinfo(skb
)->nr_frags
;
2936 i
= tx_ring
->next_to_use
;
2938 len
= min(skb_headlen(skb
), total
);
2940 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2941 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2943 tx_buffer_info
->length
= size
;
2944 tx_buffer_info
->mapped_as_page
= false;
2945 tx_buffer_info
->dma
= dma_map_single(&adapter
->pdev
->dev
,
2947 size
, DMA_TO_DEVICE
);
2948 if (dma_mapping_error(&pdev
->dev
, tx_buffer_info
->dma
))
2950 tx_buffer_info
->time_stamp
= jiffies
;
2951 tx_buffer_info
->next_to_watch
= i
;
2958 if (i
== tx_ring
->count
)
2962 for (f
= 0; f
< nr_frags
; f
++) {
2963 struct skb_frag_struct
*frag
;
2965 frag
= &skb_shinfo(skb
)->frags
[f
];
2966 len
= min((unsigned int)frag
->size
, total
);
2967 offset
= frag
->page_offset
;
2970 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2971 size
= min(len
, (unsigned int)IXGBE_MAX_DATA_PER_TXD
);
2973 tx_buffer_info
->length
= size
;
2974 tx_buffer_info
->dma
= dma_map_page(&adapter
->pdev
->dev
,
2979 tx_buffer_info
->mapped_as_page
= true;
2980 if (dma_mapping_error(&pdev
->dev
, tx_buffer_info
->dma
))
2982 tx_buffer_info
->time_stamp
= jiffies
;
2983 tx_buffer_info
->next_to_watch
= i
;
2990 if (i
== tx_ring
->count
)
2998 i
= tx_ring
->count
- 1;
3001 tx_ring
->tx_buffer_info
[i
].skb
= skb
;
3002 tx_ring
->tx_buffer_info
[first
].next_to_watch
= i
;
3007 dev_err(&pdev
->dev
, "TX DMA map failed\n");
3009 /* clear timestamp and dma mappings for failed tx_buffer_info map */
3010 tx_buffer_info
->dma
= 0;
3011 tx_buffer_info
->time_stamp
= 0;
3012 tx_buffer_info
->next_to_watch
= 0;
3015 /* clear timestamp and dma mappings for remaining portion of packet */
3016 while (count
>= 0) {
3020 i
+= tx_ring
->count
;
3021 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
3022 ixgbevf_unmap_and_free_tx_resource(adapter
, tx_buffer_info
);
3028 static void ixgbevf_tx_queue(struct ixgbevf_adapter
*adapter
,
3029 struct ixgbevf_ring
*tx_ring
, int tx_flags
,
3030 int count
, u32 paylen
, u8 hdr_len
)
3032 union ixgbe_adv_tx_desc
*tx_desc
= NULL
;
3033 struct ixgbevf_tx_buffer
*tx_buffer_info
;
3034 u32 olinfo_status
= 0, cmd_type_len
= 0;
3037 u32 txd_cmd
= IXGBE_TXD_CMD_EOP
| IXGBE_TXD_CMD_RS
| IXGBE_TXD_CMD_IFCS
;
3039 cmd_type_len
|= IXGBE_ADVTXD_DTYP_DATA
;
3041 cmd_type_len
|= IXGBE_ADVTXD_DCMD_IFCS
| IXGBE_ADVTXD_DCMD_DEXT
;
3043 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
3044 cmd_type_len
|= IXGBE_ADVTXD_DCMD_VLE
;
3046 if (tx_flags
& IXGBE_TX_FLAGS_TSO
) {
3047 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
3049 olinfo_status
|= IXGBE_TXD_POPTS_TXSM
<<
3050 IXGBE_ADVTXD_POPTS_SHIFT
;
3052 /* use index 1 context for tso */
3053 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
3054 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
3055 olinfo_status
|= IXGBE_TXD_POPTS_IXSM
<<
3056 IXGBE_ADVTXD_POPTS_SHIFT
;
3058 } else if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
3059 olinfo_status
|= IXGBE_TXD_POPTS_TXSM
<<
3060 IXGBE_ADVTXD_POPTS_SHIFT
;
3062 olinfo_status
|= ((paylen
- hdr_len
) << IXGBE_ADVTXD_PAYLEN_SHIFT
);
3064 i
= tx_ring
->next_to_use
;
3066 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
3067 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, i
);
3068 tx_desc
->read
.buffer_addr
= cpu_to_le64(tx_buffer_info
->dma
);
3069 tx_desc
->read
.cmd_type_len
=
3070 cpu_to_le32(cmd_type_len
| tx_buffer_info
->length
);
3071 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
3073 if (i
== tx_ring
->count
)
3077 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(txd_cmd
);
3080 * Force memory writes to complete before letting h/w
3081 * know there are new descriptors to fetch. (Only
3082 * applicable for weak-ordered memory model archs,
3087 tx_ring
->next_to_use
= i
;
3088 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3091 static int __ixgbevf_maybe_stop_tx(struct net_device
*netdev
,
3092 struct ixgbevf_ring
*tx_ring
, int size
)
3094 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3096 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
3097 /* Herbert's original patch had:
3098 * smp_mb__after_netif_stop_queue();
3099 * but since that doesn't exist yet, just open code it. */
3102 /* We need to check again in a case another CPU has just
3103 * made room available. */
3104 if (likely(IXGBE_DESC_UNUSED(tx_ring
) < size
))
3107 /* A reprieve! - use start_queue because it doesn't call schedule */
3108 netif_start_subqueue(netdev
, tx_ring
->queue_index
);
3109 ++adapter
->restart_queue
;
3113 static int ixgbevf_maybe_stop_tx(struct net_device
*netdev
,
3114 struct ixgbevf_ring
*tx_ring
, int size
)
3116 if (likely(IXGBE_DESC_UNUSED(tx_ring
) >= size
))
3118 return __ixgbevf_maybe_stop_tx(netdev
, tx_ring
, size
);
3121 static int ixgbevf_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3123 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3124 struct ixgbevf_ring
*tx_ring
;
3126 unsigned int tx_flags
= 0;
3133 tx_ring
= &adapter
->tx_ring
[r_idx
];
3135 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
3136 tx_flags
|= vlan_tx_tag_get(skb
);
3137 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
3138 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
3141 /* four things can cause us to need a context descriptor */
3142 if (skb_is_gso(skb
) ||
3143 (skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
3144 (tx_flags
& IXGBE_TX_FLAGS_VLAN
))
3147 count
+= TXD_USE_COUNT(skb_headlen(skb
));
3148 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
3149 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
3151 if (ixgbevf_maybe_stop_tx(netdev
, tx_ring
, count
)) {
3153 return NETDEV_TX_BUSY
;
3156 first
= tx_ring
->next_to_use
;
3158 if (skb
->protocol
== htons(ETH_P_IP
))
3159 tx_flags
|= IXGBE_TX_FLAGS_IPV4
;
3160 tso
= ixgbevf_tso(adapter
, tx_ring
, skb
, tx_flags
, &hdr_len
);
3162 dev_kfree_skb_any(skb
);
3163 return NETDEV_TX_OK
;
3167 tx_flags
|= IXGBE_TX_FLAGS_TSO
;
3168 else if (ixgbevf_tx_csum(adapter
, tx_ring
, skb
, tx_flags
) &&
3169 (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3170 tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
3172 ixgbevf_tx_queue(adapter
, tx_ring
, tx_flags
,
3173 ixgbevf_tx_map(adapter
, tx_ring
, skb
, tx_flags
, first
),
3176 ixgbevf_maybe_stop_tx(netdev
, tx_ring
, DESC_NEEDED
);
3178 return NETDEV_TX_OK
;
3182 * ixgbevf_get_stats - Get System Network Statistics
3183 * @netdev: network interface device structure
3185 * Returns the address of the device statistics structure.
3186 * The statistics are actually updated from the timer callback.
3188 static struct net_device_stats
*ixgbevf_get_stats(struct net_device
*netdev
)
3190 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3192 /* only return the current stats */
3193 return &adapter
->net_stats
;
3197 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3198 * @netdev: network interface device structure
3199 * @p: pointer to an address structure
3201 * Returns 0 on success, negative on failure
3203 static int ixgbevf_set_mac(struct net_device
*netdev
, void *p
)
3205 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3206 struct ixgbe_hw
*hw
= &adapter
->hw
;
3207 struct sockaddr
*addr
= p
;
3209 if (!is_valid_ether_addr(addr
->sa_data
))
3210 return -EADDRNOTAVAIL
;
3212 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
3213 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
3215 if (hw
->mac
.ops
.set_rar
)
3216 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0);
3222 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3223 * @netdev: network interface device structure
3224 * @new_mtu: new value for maximum frame size
3226 * Returns 0 on success, negative on failure
3228 static int ixgbevf_change_mtu(struct net_device
*netdev
, int new_mtu
)
3230 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3231 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3233 /* MTU < 68 is an error and causes problems on some kernels */
3234 if ((new_mtu
< 68) || (max_frame
> MAXIMUM_ETHERNET_VLAN_SIZE
))
3237 hw_dbg(&adapter
->hw
, "changing MTU from %d to %d\n",
3238 netdev
->mtu
, new_mtu
);
3239 /* must set new MTU before calling down or up */
3240 netdev
->mtu
= new_mtu
;
3242 if (netif_running(netdev
))
3243 ixgbevf_reinit_locked(adapter
);
3248 static void ixgbevf_shutdown(struct pci_dev
*pdev
)
3250 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3251 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3253 netif_device_detach(netdev
);
3255 if (netif_running(netdev
)) {
3256 ixgbevf_down(adapter
);
3257 ixgbevf_free_irq(adapter
);
3258 ixgbevf_free_all_tx_resources(adapter
);
3259 ixgbevf_free_all_rx_resources(adapter
);
3263 pci_save_state(pdev
);
3266 pci_disable_device(pdev
);
3269 static const struct net_device_ops ixgbe_netdev_ops
= {
3270 .ndo_open
= &ixgbevf_open
,
3271 .ndo_stop
= &ixgbevf_close
,
3272 .ndo_start_xmit
= &ixgbevf_xmit_frame
,
3273 .ndo_get_stats
= &ixgbevf_get_stats
,
3274 .ndo_set_rx_mode
= &ixgbevf_set_rx_mode
,
3275 .ndo_set_multicast_list
= &ixgbevf_set_rx_mode
,
3276 .ndo_validate_addr
= eth_validate_addr
,
3277 .ndo_set_mac_address
= &ixgbevf_set_mac
,
3278 .ndo_change_mtu
= &ixgbevf_change_mtu
,
3279 .ndo_tx_timeout
= &ixgbevf_tx_timeout
,
3280 .ndo_vlan_rx_register
= &ixgbevf_vlan_rx_register
,
3281 .ndo_vlan_rx_add_vid
= &ixgbevf_vlan_rx_add_vid
,
3282 .ndo_vlan_rx_kill_vid
= &ixgbevf_vlan_rx_kill_vid
,
3285 static void ixgbevf_assign_netdev_ops(struct net_device
*dev
)
3287 struct ixgbevf_adapter
*adapter
;
3288 adapter
= netdev_priv(dev
);
3289 dev
->netdev_ops
= &ixgbe_netdev_ops
;
3290 ixgbevf_set_ethtool_ops(dev
);
3291 dev
->watchdog_timeo
= 5 * HZ
;
3295 * ixgbevf_probe - Device Initialization Routine
3296 * @pdev: PCI device information struct
3297 * @ent: entry in ixgbevf_pci_tbl
3299 * Returns 0 on success, negative on failure
3301 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3302 * The OS initialization, configuring of the adapter private structure,
3303 * and a hardware reset occur.
3305 static int __devinit
ixgbevf_probe(struct pci_dev
*pdev
,
3306 const struct pci_device_id
*ent
)
3308 struct net_device
*netdev
;
3309 struct ixgbevf_adapter
*adapter
= NULL
;
3310 struct ixgbe_hw
*hw
= NULL
;
3311 const struct ixgbevf_info
*ii
= ixgbevf_info_tbl
[ent
->driver_data
];
3312 static int cards_found
;
3313 int err
, pci_using_dac
;
3315 err
= pci_enable_device(pdev
);
3319 if (!dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(64)) &&
3320 !dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(64))) {
3323 err
= dma_set_mask(&pdev
->dev
, DMA_BIT_MASK(32));
3325 err
= dma_set_coherent_mask(&pdev
->dev
,
3328 dev_err(&pdev
->dev
, "No usable DMA "
3329 "configuration, aborting\n");
3336 err
= pci_request_regions(pdev
, ixgbevf_driver_name
);
3338 dev_err(&pdev
->dev
, "pci_request_regions failed 0x%x\n", err
);
3342 pci_set_master(pdev
);
3345 netdev
= alloc_etherdev_mq(sizeof(struct ixgbevf_adapter
),
3348 netdev
= alloc_etherdev(sizeof(struct ixgbevf_adapter
));
3352 goto err_alloc_etherdev
;
3355 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
3357 pci_set_drvdata(pdev
, netdev
);
3358 adapter
= netdev_priv(netdev
);
3360 adapter
->netdev
= netdev
;
3361 adapter
->pdev
= pdev
;
3364 adapter
->msg_enable
= (1 << DEFAULT_DEBUG_LEVEL_SHIFT
) - 1;
3367 * call save state here in standalone driver because it relies on
3368 * adapter struct to exist, and needs to call netdev_priv
3370 pci_save_state(pdev
);
3372 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
3373 pci_resource_len(pdev
, 0));
3379 ixgbevf_assign_netdev_ops(netdev
);
3381 adapter
->bd_number
= cards_found
;
3384 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
3385 hw
->mac
.type
= ii
->mac
;
3387 memcpy(&hw
->mbx
.ops
, &ixgbevf_mbx_ops
,
3388 sizeof(struct ixgbe_mac_operations
));
3390 adapter
->flags
&= ~IXGBE_FLAG_RX_PS_CAPABLE
;
3391 adapter
->flags
&= ~IXGBE_FLAG_RX_PS_ENABLED
;
3392 adapter
->flags
|= IXGBE_FLAG_RX_1BUF_CAPABLE
;
3394 /* setup the private structure */
3395 err
= ixgbevf_sw_init(adapter
);
3397 netdev
->features
= NETIF_F_SG
|
3399 NETIF_F_HW_VLAN_TX
|
3400 NETIF_F_HW_VLAN_RX
|
3401 NETIF_F_HW_VLAN_FILTER
;
3403 netdev
->features
|= NETIF_F_IPV6_CSUM
;
3404 netdev
->features
|= NETIF_F_TSO
;
3405 netdev
->features
|= NETIF_F_TSO6
;
3406 netdev
->features
|= NETIF_F_GRO
;
3407 netdev
->vlan_features
|= NETIF_F_TSO
;
3408 netdev
->vlan_features
|= NETIF_F_TSO6
;
3409 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
3410 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
3411 netdev
->vlan_features
|= NETIF_F_SG
;
3414 netdev
->features
|= NETIF_F_HIGHDMA
;
3416 /* The HW MAC address was set and/or determined in sw_init */
3417 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
3418 memcpy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
3420 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
3421 printk(KERN_ERR
"invalid MAC address\n");
3426 init_timer(&adapter
->watchdog_timer
);
3427 adapter
->watchdog_timer
.function
= &ixgbevf_watchdog
;
3428 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
3430 INIT_WORK(&adapter
->reset_task
, ixgbevf_reset_task
);
3431 INIT_WORK(&adapter
->watchdog_task
, ixgbevf_watchdog_task
);
3433 err
= ixgbevf_init_interrupt_scheme(adapter
);
3437 /* pick up the PCI bus settings for reporting later */
3438 if (hw
->mac
.ops
.get_bus_info
)
3439 hw
->mac
.ops
.get_bus_info(hw
);
3442 netif_carrier_off(netdev
);
3443 netif_tx_stop_all_queues(netdev
);
3445 strcpy(netdev
->name
, "eth%d");
3447 err
= register_netdev(netdev
);
3451 adapter
->netdev_registered
= true;
3453 ixgbevf_init_last_counter_stats(adapter
);
3455 /* print the MAC address */
3456 hw_dbg(hw
, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
3457 netdev
->dev_addr
[0],
3458 netdev
->dev_addr
[1],
3459 netdev
->dev_addr
[2],
3460 netdev
->dev_addr
[3],
3461 netdev
->dev_addr
[4],
3462 netdev
->dev_addr
[5]);
3464 hw_dbg(hw
, "MAC: %d\n", hw
->mac
.type
);
3466 hw_dbg(hw
, "LRO is disabled\n");
3468 hw_dbg(hw
, "Intel(R) 82599 Virtual Function\n");
3474 ixgbevf_reset_interrupt_capability(adapter
);
3475 iounmap(hw
->hw_addr
);
3477 free_netdev(netdev
);
3479 pci_release_regions(pdev
);
3482 pci_disable_device(pdev
);
3487 * ixgbevf_remove - Device Removal Routine
3488 * @pdev: PCI device information struct
3490 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3491 * that it should release a PCI device. The could be caused by a
3492 * Hot-Plug event, or because the driver is going to be removed from
3495 static void __devexit
ixgbevf_remove(struct pci_dev
*pdev
)
3497 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3498 struct ixgbevf_adapter
*adapter
= netdev_priv(netdev
);
3500 set_bit(__IXGBEVF_DOWN
, &adapter
->state
);
3502 del_timer_sync(&adapter
->watchdog_timer
);
3504 cancel_work_sync(&adapter
->watchdog_task
);
3506 flush_scheduled_work();
3508 if (adapter
->netdev_registered
) {
3509 unregister_netdev(netdev
);
3510 adapter
->netdev_registered
= false;
3513 ixgbevf_reset_interrupt_capability(adapter
);
3515 iounmap(adapter
->hw
.hw_addr
);
3516 pci_release_regions(pdev
);
3518 hw_dbg(&adapter
->hw
, "Remove complete\n");
3520 kfree(adapter
->tx_ring
);
3521 kfree(adapter
->rx_ring
);
3523 free_netdev(netdev
);
3525 pci_disable_device(pdev
);
3528 static struct pci_driver ixgbevf_driver
= {
3529 .name
= ixgbevf_driver_name
,
3530 .id_table
= ixgbevf_pci_tbl
,
3531 .probe
= ixgbevf_probe
,
3532 .remove
= __devexit_p(ixgbevf_remove
),
3533 .shutdown
= ixgbevf_shutdown
,
3537 * ixgbe_init_module - Driver Registration Routine
3539 * ixgbe_init_module is the first routine called when the driver is
3540 * loaded. All it does is register with the PCI subsystem.
3542 static int __init
ixgbevf_init_module(void)
3545 printk(KERN_INFO
"ixgbevf: %s - version %s\n", ixgbevf_driver_string
,
3546 ixgbevf_driver_version
);
3548 printk(KERN_INFO
"%s\n", ixgbevf_copyright
);
3550 ret
= pci_register_driver(&ixgbevf_driver
);
3554 module_init(ixgbevf_init_module
);
3557 * ixgbe_exit_module - Driver Exit Cleanup Routine
3559 * ixgbe_exit_module is called just before the driver is removed
3562 static void __exit
ixgbevf_exit_module(void)
3564 pci_unregister_driver(&ixgbevf_driver
);
3569 * ixgbe_get_hw_dev_name - return device name string
3570 * used by hardware layer to print debugging information
3572 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw
*hw
)
3574 struct ixgbevf_adapter
*adapter
= hw
->back
;
3575 return adapter
->netdev
->name
;
3579 module_exit(ixgbevf_exit_module
);
3581 /* ixgbevf_main.c */