1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux 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 *******************************************************************************/
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/netdevice.h>
32 #include <linux/vmalloc.h>
33 #include <linux/string.h>
36 #include <linux/tcp.h>
37 #include <linux/pkt_sched.h>
38 #include <linux/ipv6.h>
39 #include <net/checksum.h>
40 #include <net/ip6_checksum.h>
41 #include <linux/ethtool.h>
42 #include <linux/if_vlan.h>
43 #include <scsi/fc/fc_fcoe.h>
46 #include "ixgbe_common.h"
48 char ixgbe_driver_name
[] = "ixgbe";
49 static const char ixgbe_driver_string
[] =
50 "Intel(R) 10 Gigabit PCI Express Network Driver";
52 #define DRV_VERSION "2.0.44-k2"
53 const char ixgbe_driver_version
[] = DRV_VERSION
;
54 static char ixgbe_copyright
[] = "Copyright (c) 1999-2009 Intel Corporation.";
56 static const struct ixgbe_info
*ixgbe_info_tbl
[] = {
57 [board_82598
] = &ixgbe_82598_info
,
58 [board_82599
] = &ixgbe_82599_info
,
61 /* ixgbe_pci_tbl - PCI Device ID Table
63 * Wildcard entries (PCI_ANY_ID) should come last
64 * Last entry must be all 0s
66 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
67 * Class, Class Mask, private data (not used) }
69 static struct pci_device_id ixgbe_pci_tbl
[] = {
70 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598
),
72 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_DUAL_PORT
),
74 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_SINGLE_PORT
),
76 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT
),
78 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT2
),
80 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_CX4
),
82 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_CX4_DUAL_PORT
),
84 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_DA_DUAL_PORT
),
86 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
),
88 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_XF_LR
),
90 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_SFP_LOM
),
92 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_BX
),
94 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4
),
96 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_XAUI_LOM
),
98 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP
),
100 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_CX4
),
103 /* required last entry */
106 MODULE_DEVICE_TABLE(pci
, ixgbe_pci_tbl
);
108 #ifdef CONFIG_IXGBE_DCA
109 static int ixgbe_notify_dca(struct notifier_block
*, unsigned long event
,
111 static struct notifier_block dca_notifier
= {
112 .notifier_call
= ixgbe_notify_dca
,
118 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
119 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
120 MODULE_LICENSE("GPL");
121 MODULE_VERSION(DRV_VERSION
);
123 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
125 static void ixgbe_release_hw_control(struct ixgbe_adapter
*adapter
)
129 /* Let firmware take over control of h/w */
130 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
131 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
132 ctrl_ext
& ~IXGBE_CTRL_EXT_DRV_LOAD
);
135 static void ixgbe_get_hw_control(struct ixgbe_adapter
*adapter
)
139 /* Let firmware know the driver has taken over */
140 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
141 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
142 ctrl_ext
| IXGBE_CTRL_EXT_DRV_LOAD
);
146 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
147 * @adapter: pointer to adapter struct
148 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
149 * @queue: queue to map the corresponding interrupt to
150 * @msix_vector: the vector to map to the corresponding queue
153 static void ixgbe_set_ivar(struct ixgbe_adapter
*adapter
, s8 direction
,
154 u8 queue
, u8 msix_vector
)
157 struct ixgbe_hw
*hw
= &adapter
->hw
;
158 switch (hw
->mac
.type
) {
159 case ixgbe_mac_82598EB
:
160 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
163 index
= (((direction
* 64) + queue
) >> 2) & 0x1F;
164 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(index
));
165 ivar
&= ~(0xFF << (8 * (queue
& 0x3)));
166 ivar
|= (msix_vector
<< (8 * (queue
& 0x3)));
167 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(index
), ivar
);
169 case ixgbe_mac_82599EB
:
170 if (direction
== -1) {
172 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
173 index
= ((queue
& 1) * 8);
174 ivar
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_IVAR_MISC
);
175 ivar
&= ~(0xFF << index
);
176 ivar
|= (msix_vector
<< index
);
177 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_IVAR_MISC
, ivar
);
180 /* tx or rx causes */
181 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
182 index
= ((16 * (queue
& 1)) + (8 * direction
));
183 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(queue
>> 1));
184 ivar
&= ~(0xFF << index
);
185 ivar
|= (msix_vector
<< index
);
186 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(queue
>> 1), ivar
);
194 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter
*adapter
,
199 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
200 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
201 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS
, mask
);
203 mask
= (qmask
& 0xFFFFFFFF);
204 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(0), mask
);
205 mask
= (qmask
>> 32);
206 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(1), mask
);
210 static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter
*adapter
,
211 struct ixgbe_tx_buffer
214 tx_buffer_info
->dma
= 0;
215 if (tx_buffer_info
->skb
) {
216 skb_dma_unmap(&adapter
->pdev
->dev
, tx_buffer_info
->skb
,
218 dev_kfree_skb_any(tx_buffer_info
->skb
);
219 tx_buffer_info
->skb
= NULL
;
221 tx_buffer_info
->time_stamp
= 0;
222 /* tx_buffer_info must be completely set up in the transmit path */
225 static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter
*adapter
,
226 struct ixgbe_ring
*tx_ring
,
229 struct ixgbe_hw
*hw
= &adapter
->hw
;
231 /* Detect a transmit hang in hardware, this serializes the
232 * check with the clearing of time_stamp and movement of eop */
233 adapter
->detect_tx_hung
= false;
234 if (tx_ring
->tx_buffer_info
[eop
].time_stamp
&&
235 time_after(jiffies
, tx_ring
->tx_buffer_info
[eop
].time_stamp
+ HZ
) &&
236 !(IXGBE_READ_REG(&adapter
->hw
, IXGBE_TFCS
) & IXGBE_TFCS_TXOFF
)) {
237 /* detected Tx unit hang */
238 union ixgbe_adv_tx_desc
*tx_desc
;
239 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
240 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
242 " TDH, TDT <%x>, <%x>\n"
243 " next_to_use <%x>\n"
244 " next_to_clean <%x>\n"
245 "tx_buffer_info[next_to_clean]\n"
246 " time_stamp <%lx>\n"
248 tx_ring
->queue_index
,
249 IXGBE_READ_REG(hw
, tx_ring
->head
),
250 IXGBE_READ_REG(hw
, tx_ring
->tail
),
251 tx_ring
->next_to_use
, eop
,
252 tx_ring
->tx_buffer_info
[eop
].time_stamp
, jiffies
);
259 #define IXGBE_MAX_TXD_PWR 14
260 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
262 /* Tx Descriptors needed, worst case */
263 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
264 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
265 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
266 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
268 static void ixgbe_tx_timeout(struct net_device
*netdev
);
271 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
272 * @q_vector: structure containing interrupt and ring information
273 * @tx_ring: tx ring to clean
275 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector
*q_vector
,
276 struct ixgbe_ring
*tx_ring
)
278 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
279 struct net_device
*netdev
= adapter
->netdev
;
280 union ixgbe_adv_tx_desc
*tx_desc
, *eop_desc
;
281 struct ixgbe_tx_buffer
*tx_buffer_info
;
282 unsigned int i
, eop
, count
= 0;
283 unsigned int total_bytes
= 0, total_packets
= 0;
285 i
= tx_ring
->next_to_clean
;
286 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
287 eop_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
289 while ((eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)) &&
290 (count
< tx_ring
->work_limit
)) {
291 bool cleaned
= false;
292 for ( ; !cleaned
; count
++) {
294 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, i
);
295 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
296 cleaned
= (i
== eop
);
297 skb
= tx_buffer_info
->skb
;
299 if (cleaned
&& skb
) {
300 unsigned int segs
, bytecount
;
301 unsigned int hlen
= skb_headlen(skb
);
303 /* gso_segs is currently only valid for tcp */
304 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
306 /* adjust for FCoE Sequence Offload */
307 if ((adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
308 && (skb
->protocol
== htons(ETH_P_FCOE
)) &&
310 hlen
= skb_transport_offset(skb
) +
311 sizeof(struct fc_frame_header
) +
312 sizeof(struct fcoe_crc_eof
);
313 segs
= DIV_ROUND_UP(skb
->len
- hlen
,
314 skb_shinfo(skb
)->gso_size
);
316 #endif /* IXGBE_FCOE */
317 /* multiply data chunks by size of headers */
318 bytecount
= ((segs
- 1) * hlen
) + skb
->len
;
319 total_packets
+= segs
;
320 total_bytes
+= bytecount
;
323 ixgbe_unmap_and_free_tx_resource(adapter
,
326 tx_desc
->wb
.status
= 0;
329 if (i
== tx_ring
->count
)
333 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
334 eop_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
337 tx_ring
->next_to_clean
= i
;
339 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
340 if (unlikely(count
&& netif_carrier_ok(netdev
) &&
341 (IXGBE_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
342 /* Make sure that anybody stopping the queue after this
343 * sees the new next_to_clean.
346 if (__netif_subqueue_stopped(netdev
, tx_ring
->queue_index
) &&
347 !test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
348 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
349 ++adapter
->restart_queue
;
353 if (adapter
->detect_tx_hung
) {
354 if (ixgbe_check_tx_hang(adapter
, tx_ring
, i
)) {
355 /* schedule immediate reset if we believe we hung */
357 "tx hang %d detected, resetting adapter\n",
358 adapter
->tx_timeout_count
+ 1);
359 ixgbe_tx_timeout(adapter
->netdev
);
363 /* re-arm the interrupt */
364 if (count
>= tx_ring
->work_limit
)
365 ixgbe_irq_rearm_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
367 tx_ring
->total_bytes
+= total_bytes
;
368 tx_ring
->total_packets
+= total_packets
;
369 tx_ring
->stats
.packets
+= total_packets
;
370 tx_ring
->stats
.bytes
+= total_bytes
;
371 adapter
->net_stats
.tx_bytes
+= total_bytes
;
372 adapter
->net_stats
.tx_packets
+= total_packets
;
373 return (count
< tx_ring
->work_limit
);
376 #ifdef CONFIG_IXGBE_DCA
377 static void ixgbe_update_rx_dca(struct ixgbe_adapter
*adapter
,
378 struct ixgbe_ring
*rx_ring
)
382 int q
= rx_ring
- adapter
->rx_ring
;
384 if (rx_ring
->cpu
!= cpu
) {
385 rxctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_DCA_RXCTRL(q
));
386 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
387 rxctrl
&= ~IXGBE_DCA_RXCTRL_CPUID_MASK
;
388 rxctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
);
389 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
390 rxctrl
&= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599
;
391 rxctrl
|= (dca3_get_tag(&adapter
->pdev
->dev
, cpu
) <<
392 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599
);
394 rxctrl
|= IXGBE_DCA_RXCTRL_DESC_DCA_EN
;
395 rxctrl
|= IXGBE_DCA_RXCTRL_HEAD_DCA_EN
;
396 rxctrl
&= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN
);
397 rxctrl
&= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN
|
398 IXGBE_DCA_RXCTRL_DESC_HSRO_EN
);
399 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_RXCTRL(q
), rxctrl
);
405 static void ixgbe_update_tx_dca(struct ixgbe_adapter
*adapter
,
406 struct ixgbe_ring
*tx_ring
)
410 int q
= tx_ring
- adapter
->tx_ring
;
412 if (tx_ring
->cpu
!= cpu
) {
413 txctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_DCA_TXCTRL(q
));
414 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
415 txctrl
&= ~IXGBE_DCA_TXCTRL_CPUID_MASK
;
416 txctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
);
417 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
418 txctrl
&= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599
;
419 txctrl
|= (dca3_get_tag(&adapter
->pdev
->dev
, cpu
) <<
420 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599
);
422 txctrl
|= IXGBE_DCA_TXCTRL_DESC_DCA_EN
;
423 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_TXCTRL(q
), txctrl
);
429 static void ixgbe_setup_dca(struct ixgbe_adapter
*adapter
)
433 if (!(adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
))
436 /* always use CB2 mode, difference is masked in the CB driver */
437 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
, 2);
439 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
440 adapter
->tx_ring
[i
].cpu
= -1;
441 ixgbe_update_tx_dca(adapter
, &adapter
->tx_ring
[i
]);
443 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
444 adapter
->rx_ring
[i
].cpu
= -1;
445 ixgbe_update_rx_dca(adapter
, &adapter
->rx_ring
[i
]);
449 static int __ixgbe_notify_dca(struct device
*dev
, void *data
)
451 struct net_device
*netdev
= dev_get_drvdata(dev
);
452 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
453 unsigned long event
= *(unsigned long *)data
;
456 case DCA_PROVIDER_ADD
:
457 /* if we're already enabled, don't do it again */
458 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
460 if (dca_add_requester(dev
) == 0) {
461 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
462 ixgbe_setup_dca(adapter
);
465 /* Fall Through since DCA is disabled. */
466 case DCA_PROVIDER_REMOVE
:
467 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
468 dca_remove_requester(dev
);
469 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
470 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
, 1);
478 #endif /* CONFIG_IXGBE_DCA */
480 * ixgbe_receive_skb - Send a completed packet up the stack
481 * @adapter: board private structure
482 * @skb: packet to send up
483 * @status: hardware indication of status of receive
484 * @rx_ring: rx descriptor ring (for a specific queue) to setup
485 * @rx_desc: rx descriptor
487 static void ixgbe_receive_skb(struct ixgbe_q_vector
*q_vector
,
488 struct sk_buff
*skb
, u8 status
,
489 struct ixgbe_ring
*ring
,
490 union ixgbe_adv_rx_desc
*rx_desc
)
492 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
493 struct napi_struct
*napi
= &q_vector
->napi
;
494 bool is_vlan
= (status
& IXGBE_RXD_STAT_VP
);
495 u16 tag
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
497 skb_record_rx_queue(skb
, ring
->queue_index
);
498 if (!(adapter
->flags
& IXGBE_FLAG_IN_NETPOLL
)) {
499 if (adapter
->vlgrp
&& is_vlan
&& (tag
& VLAN_VID_MASK
))
500 vlan_gro_receive(napi
, adapter
->vlgrp
, tag
, skb
);
502 napi_gro_receive(napi
, skb
);
504 if (adapter
->vlgrp
&& is_vlan
&& (tag
& VLAN_VID_MASK
))
505 vlan_hwaccel_rx(skb
, adapter
->vlgrp
, tag
);
512 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
513 * @adapter: address of board private structure
514 * @status_err: hardware indication of status of receive
515 * @skb: skb currently being received and modified
517 static inline void ixgbe_rx_checksum(struct ixgbe_adapter
*adapter
,
518 union ixgbe_adv_rx_desc
*rx_desc
,
521 u32 status_err
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
523 skb
->ip_summed
= CHECKSUM_NONE
;
525 /* Rx csum disabled */
526 if (!(adapter
->flags
& IXGBE_FLAG_RX_CSUM_ENABLED
))
529 /* if IP and error */
530 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
531 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
532 adapter
->hw_csum_rx_error
++;
536 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
539 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
540 u16 pkt_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
543 * 82599 errata, UDP frames with a 0 checksum can be marked as
546 if ((pkt_info
& IXGBE_RXDADV_PKTTYPE_UDP
) &&
547 (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
))
550 adapter
->hw_csum_rx_error
++;
554 /* It must be a TCP or UDP packet with a valid checksum */
555 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
556 adapter
->hw_csum_rx_good
++;
559 static inline void ixgbe_release_rx_desc(struct ixgbe_hw
*hw
,
560 struct ixgbe_ring
*rx_ring
, u32 val
)
563 * Force memory writes to complete before letting h/w
564 * know there are new descriptors to fetch. (Only
565 * applicable for weak-ordered memory model archs,
569 IXGBE_WRITE_REG(hw
, IXGBE_RDT(rx_ring
->reg_idx
), val
);
573 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
574 * @adapter: address of board private structure
576 static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter
*adapter
,
577 struct ixgbe_ring
*rx_ring
,
580 struct pci_dev
*pdev
= adapter
->pdev
;
581 union ixgbe_adv_rx_desc
*rx_desc
;
582 struct ixgbe_rx_buffer
*bi
;
585 i
= rx_ring
->next_to_use
;
586 bi
= &rx_ring
->rx_buffer_info
[i
];
588 while (cleaned_count
--) {
589 rx_desc
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
592 (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
)) {
594 bi
->page
= alloc_page(GFP_ATOMIC
);
596 adapter
->alloc_rx_page_failed
++;
601 /* use a half page if we're re-using */
602 bi
->page_offset
^= (PAGE_SIZE
/ 2);
605 bi
->page_dma
= pci_map_page(pdev
, bi
->page
,
613 skb
= netdev_alloc_skb(adapter
->netdev
,
614 (rx_ring
->rx_buf_len
+
618 adapter
->alloc_rx_buff_failed
++;
623 * Make buffer alignment 2 beyond a 16 byte boundary
624 * this will result in a 16 byte aligned IP header after
625 * the 14 byte MAC header is removed
627 skb_reserve(skb
, NET_IP_ALIGN
);
630 bi
->dma
= pci_map_single(pdev
, skb
->data
,
634 /* Refresh the desc even if buffer_addrs didn't change because
635 * each write-back erases this info. */
636 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
637 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->page_dma
);
638 rx_desc
->read
.hdr_addr
= cpu_to_le64(bi
->dma
);
640 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
644 if (i
== rx_ring
->count
)
646 bi
= &rx_ring
->rx_buffer_info
[i
];
650 if (rx_ring
->next_to_use
!= i
) {
651 rx_ring
->next_to_use
= i
;
653 i
= (rx_ring
->count
- 1);
655 ixgbe_release_rx_desc(&adapter
->hw
, rx_ring
, i
);
659 static inline u16
ixgbe_get_hdr_info(union ixgbe_adv_rx_desc
*rx_desc
)
661 return rx_desc
->wb
.lower
.lo_dword
.hs_rss
.hdr_info
;
664 static inline u16
ixgbe_get_pkt_info(union ixgbe_adv_rx_desc
*rx_desc
)
666 return rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
669 static inline u32
ixgbe_get_rsc_count(union ixgbe_adv_rx_desc
*rx_desc
)
671 return (le32_to_cpu(rx_desc
->wb
.lower
.lo_dword
.data
) &
672 IXGBE_RXDADV_RSCCNT_MASK
) >>
673 IXGBE_RXDADV_RSCCNT_SHIFT
;
677 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
678 * @skb: pointer to the last skb in the rsc queue
680 * This function changes a queue full of hw rsc buffers into a completed
681 * packet. It uses the ->prev pointers to find the first packet and then
682 * turns it into the frag list owner.
684 static inline struct sk_buff
*ixgbe_transform_rsc_queue(struct sk_buff
*skb
)
686 unsigned int frag_list_size
= 0;
689 struct sk_buff
*prev
= skb
->prev
;
690 frag_list_size
+= skb
->len
;
695 skb_shinfo(skb
)->frag_list
= skb
->next
;
697 skb
->len
+= frag_list_size
;
698 skb
->data_len
+= frag_list_size
;
699 skb
->truesize
+= frag_list_size
;
703 static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector
*q_vector
,
704 struct ixgbe_ring
*rx_ring
,
705 int *work_done
, int work_to_do
)
707 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
708 struct pci_dev
*pdev
= adapter
->pdev
;
709 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
710 struct ixgbe_rx_buffer
*rx_buffer_info
, *next_buffer
;
712 unsigned int i
, rsc_count
= 0;
715 bool cleaned
= false;
716 int cleaned_count
= 0;
717 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
720 #endif /* IXGBE_FCOE */
722 i
= rx_ring
->next_to_clean
;
723 rx_desc
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
724 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
725 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
727 while (staterr
& IXGBE_RXD_STAT_DD
) {
729 if (*work_done
>= work_to_do
)
733 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
734 hdr_info
= le16_to_cpu(ixgbe_get_hdr_info(rx_desc
));
735 len
= (hdr_info
& IXGBE_RXDADV_HDRBUFLEN_MASK
) >>
736 IXGBE_RXDADV_HDRBUFLEN_SHIFT
;
737 if (hdr_info
& IXGBE_RXDADV_SPH
)
738 adapter
->rx_hdr_split
++;
739 if (len
> IXGBE_RX_HDR_SIZE
)
740 len
= IXGBE_RX_HDR_SIZE
;
741 upper_len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
743 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
747 skb
= rx_buffer_info
->skb
;
748 prefetch(skb
->data
- NET_IP_ALIGN
);
749 rx_buffer_info
->skb
= NULL
;
751 if (rx_buffer_info
->dma
) {
752 pci_unmap_single(pdev
, rx_buffer_info
->dma
,
755 rx_buffer_info
->dma
= 0;
760 pci_unmap_page(pdev
, rx_buffer_info
->page_dma
,
761 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
762 rx_buffer_info
->page_dma
= 0;
763 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
,
764 rx_buffer_info
->page
,
765 rx_buffer_info
->page_offset
,
768 if ((rx_ring
->rx_buf_len
> (PAGE_SIZE
/ 2)) ||
769 (page_count(rx_buffer_info
->page
) != 1))
770 rx_buffer_info
->page
= NULL
;
772 get_page(rx_buffer_info
->page
);
774 skb
->len
+= upper_len
;
775 skb
->data_len
+= upper_len
;
776 skb
->truesize
+= upper_len
;
780 if (i
== rx_ring
->count
)
783 next_rxd
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
787 if (adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
)
788 rsc_count
= ixgbe_get_rsc_count(rx_desc
);
791 u32 nextp
= (staterr
& IXGBE_RXDADV_NEXTP_MASK
) >>
792 IXGBE_RXDADV_NEXTP_SHIFT
;
793 next_buffer
= &rx_ring
->rx_buffer_info
[nextp
];
794 rx_ring
->rsc_count
+= (rsc_count
- 1);
796 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
799 if (staterr
& IXGBE_RXD_STAT_EOP
) {
801 skb
= ixgbe_transform_rsc_queue(skb
);
802 rx_ring
->stats
.packets
++;
803 rx_ring
->stats
.bytes
+= skb
->len
;
805 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
806 rx_buffer_info
->skb
= next_buffer
->skb
;
807 rx_buffer_info
->dma
= next_buffer
->dma
;
808 next_buffer
->skb
= skb
;
809 next_buffer
->dma
= 0;
811 skb
->next
= next_buffer
->skb
;
812 skb
->next
->prev
= skb
;
814 adapter
->non_eop_descs
++;
818 if (staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
) {
819 dev_kfree_skb_irq(skb
);
823 ixgbe_rx_checksum(adapter
, rx_desc
, skb
);
825 /* probably a little skewed due to removing CRC */
826 total_rx_bytes
+= skb
->len
;
829 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
831 /* if ddp, not passing to ULD unless for FCP_RSP or error */
832 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
833 ddp_bytes
= ixgbe_fcoe_ddp(adapter
, rx_desc
, skb
);
837 #endif /* IXGBE_FCOE */
838 ixgbe_receive_skb(q_vector
, skb
, staterr
, rx_ring
, rx_desc
);
841 rx_desc
->wb
.upper
.status_error
= 0;
843 /* return some buffers to hardware, one at a time is too slow */
844 if (cleaned_count
>= IXGBE_RX_BUFFER_WRITE
) {
845 ixgbe_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
849 /* use prefetched values */
851 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
853 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
856 rx_ring
->next_to_clean
= i
;
857 cleaned_count
= IXGBE_DESC_UNUSED(rx_ring
);
860 ixgbe_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
863 /* include DDPed FCoE data */
867 mss
= adapter
->netdev
->mtu
- sizeof(struct fcoe_hdr
) -
868 sizeof(struct fc_frame_header
) -
869 sizeof(struct fcoe_crc_eof
);
872 total_rx_bytes
+= ddp_bytes
;
873 total_rx_packets
+= DIV_ROUND_UP(ddp_bytes
, mss
);
875 #endif /* IXGBE_FCOE */
877 rx_ring
->total_packets
+= total_rx_packets
;
878 rx_ring
->total_bytes
+= total_rx_bytes
;
879 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
880 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
885 static int ixgbe_clean_rxonly(struct napi_struct
*, int);
887 * ixgbe_configure_msix - Configure MSI-X hardware
888 * @adapter: board private structure
890 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
893 static void ixgbe_configure_msix(struct ixgbe_adapter
*adapter
)
895 struct ixgbe_q_vector
*q_vector
;
896 int i
, j
, q_vectors
, v_idx
, r_idx
;
899 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
902 * Populate the IVAR table and set the ITR values to the
903 * corresponding register.
905 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
906 q_vector
= adapter
->q_vector
[v_idx
];
907 /* XXX for_each_bit(...) */
908 r_idx
= find_first_bit(q_vector
->rxr_idx
,
909 adapter
->num_rx_queues
);
911 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
912 j
= adapter
->rx_ring
[r_idx
].reg_idx
;
913 ixgbe_set_ivar(adapter
, 0, j
, v_idx
);
914 r_idx
= find_next_bit(q_vector
->rxr_idx
,
915 adapter
->num_rx_queues
,
918 r_idx
= find_first_bit(q_vector
->txr_idx
,
919 adapter
->num_tx_queues
);
921 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
922 j
= adapter
->tx_ring
[r_idx
].reg_idx
;
923 ixgbe_set_ivar(adapter
, 1, j
, v_idx
);
924 r_idx
= find_next_bit(q_vector
->txr_idx
,
925 adapter
->num_tx_queues
,
929 if (q_vector
->txr_count
&& !q_vector
->rxr_count
)
931 q_vector
->eitr
= adapter
->tx_eitr_param
;
932 else if (q_vector
->rxr_count
)
934 q_vector
->eitr
= adapter
->rx_eitr_param
;
936 ixgbe_write_eitr(q_vector
);
939 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
940 ixgbe_set_ivar(adapter
, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX
,
942 else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
)
943 ixgbe_set_ivar(adapter
, -1, 1, v_idx
);
944 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITR(v_idx
), 1950);
946 /* set up to autoclear timer, and the vectors */
947 mask
= IXGBE_EIMS_ENABLE_MASK
;
948 mask
&= ~(IXGBE_EIMS_OTHER
| IXGBE_EIMS_LSC
);
949 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIAC
, mask
);
956 latency_invalid
= 255
960 * ixgbe_update_itr - update the dynamic ITR value based on statistics
961 * @adapter: pointer to adapter
962 * @eitr: eitr setting (ints per sec) to give last timeslice
963 * @itr_setting: current throttle rate in ints/second
964 * @packets: the number of packets during this measurement interval
965 * @bytes: the number of bytes during this measurement interval
967 * Stores a new ITR value based on packets and byte
968 * counts during the last interrupt. The advantage of per interrupt
969 * computation is faster updates and more accurate ITR for the current
970 * traffic pattern. Constants in this function were computed
971 * based on theoretical maximum wire speed and thresholds were set based
972 * on testing data as well as attempting to minimize response time
973 * while increasing bulk throughput.
974 * this functionality is controlled by the InterruptThrottleRate module
975 * parameter (see ixgbe_param.c)
977 static u8
ixgbe_update_itr(struct ixgbe_adapter
*adapter
,
978 u32 eitr
, u8 itr_setting
,
979 int packets
, int bytes
)
981 unsigned int retval
= itr_setting
;
986 goto update_itr_done
;
989 /* simple throttlerate management
990 * 0-20MB/s lowest (100000 ints/s)
991 * 20-100MB/s low (20000 ints/s)
992 * 100-1249MB/s bulk (8000 ints/s)
994 /* what was last interrupt timeslice? */
995 timepassed_us
= 1000000/eitr
;
996 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
998 switch (itr_setting
) {
1000 if (bytes_perint
> adapter
->eitr_low
)
1001 retval
= low_latency
;
1004 if (bytes_perint
> adapter
->eitr_high
)
1005 retval
= bulk_latency
;
1006 else if (bytes_perint
<= adapter
->eitr_low
)
1007 retval
= lowest_latency
;
1010 if (bytes_perint
<= adapter
->eitr_high
)
1011 retval
= low_latency
;
1020 * ixgbe_write_eitr - write EITR register in hardware specific way
1021 * @q_vector: structure containing interrupt and ring information
1023 * This function is made to be called by ethtool and by the driver
1024 * when it needs to update EITR registers at runtime. Hardware
1025 * specific quirks/differences are taken care of here.
1027 void ixgbe_write_eitr(struct ixgbe_q_vector
*q_vector
)
1029 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1030 struct ixgbe_hw
*hw
= &adapter
->hw
;
1031 int v_idx
= q_vector
->v_idx
;
1032 u32 itr_reg
= EITR_INTS_PER_SEC_TO_REG(q_vector
->eitr
);
1034 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1035 /* must write high and low 16 bits to reset counter */
1036 itr_reg
|= (itr_reg
<< 16);
1037 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
1039 * set the WDIS bit to not clear the timer bits and cause an
1040 * immediate assertion of the interrupt
1042 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
1044 IXGBE_WRITE_REG(hw
, IXGBE_EITR(v_idx
), itr_reg
);
1047 static void ixgbe_set_itr_msix(struct ixgbe_q_vector
*q_vector
)
1049 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1051 u8 current_itr
, ret_itr
;
1053 struct ixgbe_ring
*rx_ring
, *tx_ring
;
1055 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1056 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1057 tx_ring
= &(adapter
->tx_ring
[r_idx
]);
1058 ret_itr
= ixgbe_update_itr(adapter
, q_vector
->eitr
,
1060 tx_ring
->total_packets
,
1061 tx_ring
->total_bytes
);
1062 /* if the result for this queue would decrease interrupt
1063 * rate for this vector then use that result */
1064 q_vector
->tx_itr
= ((q_vector
->tx_itr
> ret_itr
) ?
1065 q_vector
->tx_itr
- 1 : ret_itr
);
1066 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1070 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1071 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1072 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
1073 ret_itr
= ixgbe_update_itr(adapter
, q_vector
->eitr
,
1075 rx_ring
->total_packets
,
1076 rx_ring
->total_bytes
);
1077 /* if the result for this queue would decrease interrupt
1078 * rate for this vector then use that result */
1079 q_vector
->rx_itr
= ((q_vector
->rx_itr
> ret_itr
) ?
1080 q_vector
->rx_itr
- 1 : ret_itr
);
1081 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1085 current_itr
= max(q_vector
->rx_itr
, q_vector
->tx_itr
);
1087 switch (current_itr
) {
1088 /* counts and packets in update_itr are dependent on these numbers */
1089 case lowest_latency
:
1093 new_itr
= 20000; /* aka hwitr = ~200 */
1101 if (new_itr
!= q_vector
->eitr
) {
1102 /* do an exponential smoothing */
1103 new_itr
= ((q_vector
->eitr
* 90)/100) + ((new_itr
* 10)/100);
1105 /* save the algorithm value here, not the smoothed one */
1106 q_vector
->eitr
= new_itr
;
1108 ixgbe_write_eitr(q_vector
);
1114 static void ixgbe_check_fan_failure(struct ixgbe_adapter
*adapter
, u32 eicr
)
1116 struct ixgbe_hw
*hw
= &adapter
->hw
;
1118 if ((adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) &&
1119 (eicr
& IXGBE_EICR_GPI_SDP1
)) {
1120 DPRINTK(PROBE
, CRIT
, "Fan has stopped, replace the adapter\n");
1121 /* write to clear the interrupt */
1122 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1
);
1126 static void ixgbe_check_sfp_event(struct ixgbe_adapter
*adapter
, u32 eicr
)
1128 struct ixgbe_hw
*hw
= &adapter
->hw
;
1130 if (eicr
& IXGBE_EICR_GPI_SDP1
) {
1131 /* Clear the interrupt */
1132 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1
);
1133 schedule_work(&adapter
->multispeed_fiber_task
);
1134 } else if (eicr
& IXGBE_EICR_GPI_SDP2
) {
1135 /* Clear the interrupt */
1136 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP2
);
1137 schedule_work(&adapter
->sfp_config_module_task
);
1139 /* Interrupt isn't for us... */
1144 static void ixgbe_check_lsc(struct ixgbe_adapter
*adapter
)
1146 struct ixgbe_hw
*hw
= &adapter
->hw
;
1149 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
1150 adapter
->link_check_timeout
= jiffies
;
1151 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
1152 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_EIMC_LSC
);
1153 schedule_work(&adapter
->watchdog_task
);
1157 static irqreturn_t
ixgbe_msix_lsc(int irq
, void *data
)
1159 struct net_device
*netdev
= data
;
1160 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
1161 struct ixgbe_hw
*hw
= &adapter
->hw
;
1165 * Workaround for Silicon errata. Use clear-by-write instead
1166 * of clear-by-read. Reading with EICS will return the
1167 * interrupt causes without clearing, which later be done
1168 * with the write to EICR.
1170 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICS
);
1171 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, eicr
);
1173 if (eicr
& IXGBE_EICR_LSC
)
1174 ixgbe_check_lsc(adapter
);
1176 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
1177 ixgbe_check_fan_failure(adapter
, eicr
);
1179 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
1180 ixgbe_check_sfp_event(adapter
, eicr
);
1182 /* Handle Flow Director Full threshold interrupt */
1183 if (eicr
& IXGBE_EICR_FLOW_DIR
) {
1185 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_FLOW_DIR
);
1186 /* Disable transmits before FDIR Re-initialization */
1187 netif_tx_stop_all_queues(netdev
);
1188 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1189 struct ixgbe_ring
*tx_ring
=
1190 &adapter
->tx_ring
[i
];
1191 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE
,
1192 &tx_ring
->reinit_state
))
1193 schedule_work(&adapter
->fdir_reinit_task
);
1197 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1198 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMS_OTHER
);
1203 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter
*adapter
,
1208 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1209 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
1210 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS
, mask
);
1212 mask
= (qmask
& 0xFFFFFFFF);
1213 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS_EX(0), mask
);
1214 mask
= (qmask
>> 32);
1215 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS_EX(1), mask
);
1217 /* skip the flush */
1220 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter
*adapter
,
1225 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1226 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
1227 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, mask
);
1229 mask
= (qmask
& 0xFFFFFFFF);
1230 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(0), mask
);
1231 mask
= (qmask
>> 32);
1232 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(1), mask
);
1234 /* skip the flush */
1237 static irqreturn_t
ixgbe_msix_clean_tx(int irq
, void *data
)
1239 struct ixgbe_q_vector
*q_vector
= data
;
1240 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1241 struct ixgbe_ring
*tx_ring
;
1244 if (!q_vector
->txr_count
)
1247 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1248 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1249 tx_ring
= &(adapter
->tx_ring
[r_idx
]);
1250 tx_ring
->total_bytes
= 0;
1251 tx_ring
->total_packets
= 0;
1252 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1256 /* disable interrupts on this vector only */
1257 ixgbe_irq_disable_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
1258 napi_schedule(&q_vector
->napi
);
1264 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1266 * @data: pointer to our q_vector struct for this interrupt vector
1268 static irqreturn_t
ixgbe_msix_clean_rx(int irq
, void *data
)
1270 struct ixgbe_q_vector
*q_vector
= data
;
1271 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1272 struct ixgbe_ring
*rx_ring
;
1276 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1277 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1278 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
1279 rx_ring
->total_bytes
= 0;
1280 rx_ring
->total_packets
= 0;
1281 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1285 if (!q_vector
->rxr_count
)
1288 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1289 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
1290 /* disable interrupts on this vector only */
1291 ixgbe_irq_disable_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
1292 napi_schedule(&q_vector
->napi
);
1297 static irqreturn_t
ixgbe_msix_clean_many(int irq
, void *data
)
1299 struct ixgbe_q_vector
*q_vector
= data
;
1300 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1301 struct ixgbe_ring
*ring
;
1305 if (!q_vector
->txr_count
&& !q_vector
->rxr_count
)
1308 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1309 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1310 ring
= &(adapter
->tx_ring
[r_idx
]);
1311 ring
->total_bytes
= 0;
1312 ring
->total_packets
= 0;
1313 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1317 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1318 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1319 ring
= &(adapter
->rx_ring
[r_idx
]);
1320 ring
->total_bytes
= 0;
1321 ring
->total_packets
= 0;
1322 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1326 /* disable interrupts on this vector only */
1327 ixgbe_irq_disable_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
1328 napi_schedule(&q_vector
->napi
);
1334 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1335 * @napi: napi struct with our devices info in it
1336 * @budget: amount of work driver is allowed to do this pass, in packets
1338 * This function is optimized for cleaning one queue only on a single
1341 static int ixgbe_clean_rxonly(struct napi_struct
*napi
, int budget
)
1343 struct ixgbe_q_vector
*q_vector
=
1344 container_of(napi
, struct ixgbe_q_vector
, napi
);
1345 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1346 struct ixgbe_ring
*rx_ring
= NULL
;
1350 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1351 rx_ring
= &(adapter
->rx_ring
[r_idx
]);
1352 #ifdef CONFIG_IXGBE_DCA
1353 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1354 ixgbe_update_rx_dca(adapter
, rx_ring
);
1357 ixgbe_clean_rx_irq(q_vector
, rx_ring
, &work_done
, budget
);
1359 /* If all Rx work done, exit the polling mode */
1360 if (work_done
< budget
) {
1361 napi_complete(napi
);
1362 if (adapter
->rx_itr_setting
& 1)
1363 ixgbe_set_itr_msix(q_vector
);
1364 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1365 ixgbe_irq_enable_queues(adapter
,
1366 ((u64
)1 << q_vector
->v_idx
));
1373 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
1374 * @napi: napi struct with our devices info in it
1375 * @budget: amount of work driver is allowed to do this pass, in packets
1377 * This function will clean more than one rx queue associated with a
1380 static int ixgbe_clean_rxtx_many(struct napi_struct
*napi
, int budget
)
1382 struct ixgbe_q_vector
*q_vector
=
1383 container_of(napi
, struct ixgbe_q_vector
, napi
);
1384 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1385 struct ixgbe_ring
*ring
= NULL
;
1386 int work_done
= 0, i
;
1388 bool tx_clean_complete
= true;
1390 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1391 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1392 ring
= &(adapter
->tx_ring
[r_idx
]);
1393 #ifdef CONFIG_IXGBE_DCA
1394 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1395 ixgbe_update_tx_dca(adapter
, ring
);
1397 tx_clean_complete
&= ixgbe_clean_tx_irq(q_vector
, ring
);
1398 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1402 /* attempt to distribute budget to each queue fairly, but don't allow
1403 * the budget to go below 1 because we'll exit polling */
1404 budget
/= (q_vector
->rxr_count
?: 1);
1405 budget
= max(budget
, 1);
1406 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1407 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1408 ring
= &(adapter
->rx_ring
[r_idx
]);
1409 #ifdef CONFIG_IXGBE_DCA
1410 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1411 ixgbe_update_rx_dca(adapter
, ring
);
1413 ixgbe_clean_rx_irq(q_vector
, ring
, &work_done
, budget
);
1414 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1418 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1419 ring
= &(adapter
->rx_ring
[r_idx
]);
1420 /* If all Rx work done, exit the polling mode */
1421 if (work_done
< budget
) {
1422 napi_complete(napi
);
1423 if (adapter
->rx_itr_setting
& 1)
1424 ixgbe_set_itr_msix(q_vector
);
1425 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1426 ixgbe_irq_enable_queues(adapter
,
1427 ((u64
)1 << q_vector
->v_idx
));
1435 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1436 * @napi: napi struct with our devices info in it
1437 * @budget: amount of work driver is allowed to do this pass, in packets
1439 * This function is optimized for cleaning one queue only on a single
1442 static int ixgbe_clean_txonly(struct napi_struct
*napi
, int budget
)
1444 struct ixgbe_q_vector
*q_vector
=
1445 container_of(napi
, struct ixgbe_q_vector
, napi
);
1446 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1447 struct ixgbe_ring
*tx_ring
= NULL
;
1451 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1452 tx_ring
= &(adapter
->tx_ring
[r_idx
]);
1453 #ifdef CONFIG_IXGBE_DCA
1454 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1455 ixgbe_update_tx_dca(adapter
, tx_ring
);
1458 if (!ixgbe_clean_tx_irq(q_vector
, tx_ring
))
1461 /* If all Tx work done, exit the polling mode */
1462 if (work_done
< budget
) {
1463 napi_complete(napi
);
1464 if (adapter
->tx_itr_setting
& 1)
1465 ixgbe_set_itr_msix(q_vector
);
1466 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1467 ixgbe_irq_enable_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
1473 static inline void map_vector_to_rxq(struct ixgbe_adapter
*a
, int v_idx
,
1476 struct ixgbe_q_vector
*q_vector
= a
->q_vector
[v_idx
];
1478 set_bit(r_idx
, q_vector
->rxr_idx
);
1479 q_vector
->rxr_count
++;
1482 static inline void map_vector_to_txq(struct ixgbe_adapter
*a
, int v_idx
,
1485 struct ixgbe_q_vector
*q_vector
= a
->q_vector
[v_idx
];
1487 set_bit(t_idx
, q_vector
->txr_idx
);
1488 q_vector
->txr_count
++;
1492 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
1493 * @adapter: board private structure to initialize
1494 * @vectors: allotted vector count for descriptor rings
1496 * This function maps descriptor rings to the queue-specific vectors
1497 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1498 * one vector per ring/queue, but on a constrained vector budget, we
1499 * group the rings as "efficiently" as possible. You would add new
1500 * mapping configurations in here.
1502 static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter
*adapter
,
1506 int rxr_idx
= 0, txr_idx
= 0;
1507 int rxr_remaining
= adapter
->num_rx_queues
;
1508 int txr_remaining
= adapter
->num_tx_queues
;
1513 /* No mapping required if MSI-X is disabled. */
1514 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
))
1518 * The ideal configuration...
1519 * We have enough vectors to map one per queue.
1521 if (vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
1522 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
1523 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
1525 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
1526 map_vector_to_txq(adapter
, v_start
, txr_idx
);
1532 * If we don't have enough vectors for a 1-to-1
1533 * mapping, we'll have to group them so there are
1534 * multiple queues per vector.
1536 /* Re-adjusting *qpv takes care of the remainder. */
1537 for (i
= v_start
; i
< vectors
; i
++) {
1538 rqpv
= DIV_ROUND_UP(rxr_remaining
, vectors
- i
);
1539 for (j
= 0; j
< rqpv
; j
++) {
1540 map_vector_to_rxq(adapter
, i
, rxr_idx
);
1545 for (i
= v_start
; i
< vectors
; i
++) {
1546 tqpv
= DIV_ROUND_UP(txr_remaining
, vectors
- i
);
1547 for (j
= 0; j
< tqpv
; j
++) {
1548 map_vector_to_txq(adapter
, i
, txr_idx
);
1559 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
1560 * @adapter: board private structure
1562 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
1563 * interrupts from the kernel.
1565 static int ixgbe_request_msix_irqs(struct ixgbe_adapter
*adapter
)
1567 struct net_device
*netdev
= adapter
->netdev
;
1568 irqreturn_t (*handler
)(int, void *);
1569 int i
, vector
, q_vectors
, err
;
1572 /* Decrement for Other and TCP Timer vectors */
1573 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1575 /* Map the Tx/Rx rings to the vectors we were allotted. */
1576 err
= ixgbe_map_rings_to_vectors(adapter
, q_vectors
);
1580 #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
1581 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
1582 &ixgbe_msix_clean_many)
1583 for (vector
= 0; vector
< q_vectors
; vector
++) {
1584 handler
= SET_HANDLER(adapter
->q_vector
[vector
]);
1586 if(handler
== &ixgbe_msix_clean_rx
) {
1587 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1588 netdev
->name
, "rx", ri
++);
1590 else if(handler
== &ixgbe_msix_clean_tx
) {
1591 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1592 netdev
->name
, "tx", ti
++);
1595 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1596 netdev
->name
, "TxRx", vector
);
1598 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1599 handler
, 0, adapter
->name
[vector
],
1600 adapter
->q_vector
[vector
]);
1603 "request_irq failed for MSIX interrupt "
1604 "Error: %d\n", err
);
1605 goto free_queue_irqs
;
1609 sprintf(adapter
->name
[vector
], "%s:lsc", netdev
->name
);
1610 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1611 &ixgbe_msix_lsc
, 0, adapter
->name
[vector
], netdev
);
1614 "request_irq for msix_lsc failed: %d\n", err
);
1615 goto free_queue_irqs
;
1621 for (i
= vector
- 1; i
>= 0; i
--)
1622 free_irq(adapter
->msix_entries
[--vector
].vector
,
1623 adapter
->q_vector
[i
]);
1624 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
1625 pci_disable_msix(adapter
->pdev
);
1626 kfree(adapter
->msix_entries
);
1627 adapter
->msix_entries
= NULL
;
1632 static void ixgbe_set_itr(struct ixgbe_adapter
*adapter
)
1634 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
1636 u32 new_itr
= q_vector
->eitr
;
1637 struct ixgbe_ring
*rx_ring
= &adapter
->rx_ring
[0];
1638 struct ixgbe_ring
*tx_ring
= &adapter
->tx_ring
[0];
1640 q_vector
->tx_itr
= ixgbe_update_itr(adapter
, new_itr
,
1642 tx_ring
->total_packets
,
1643 tx_ring
->total_bytes
);
1644 q_vector
->rx_itr
= ixgbe_update_itr(adapter
, new_itr
,
1646 rx_ring
->total_packets
,
1647 rx_ring
->total_bytes
);
1649 current_itr
= max(q_vector
->rx_itr
, q_vector
->tx_itr
);
1651 switch (current_itr
) {
1652 /* counts and packets in update_itr are dependent on these numbers */
1653 case lowest_latency
:
1657 new_itr
= 20000; /* aka hwitr = ~200 */
1666 if (new_itr
!= q_vector
->eitr
) {
1667 /* do an exponential smoothing */
1668 new_itr
= ((q_vector
->eitr
* 90)/100) + ((new_itr
* 10)/100);
1670 /* save the algorithm value here, not the smoothed one */
1671 q_vector
->eitr
= new_itr
;
1673 ixgbe_write_eitr(q_vector
);
1680 * ixgbe_irq_enable - Enable default interrupt generation settings
1681 * @adapter: board private structure
1683 static inline void ixgbe_irq_enable(struct ixgbe_adapter
*adapter
)
1687 mask
= (IXGBE_EIMS_ENABLE_MASK
& ~IXGBE_EIMS_RTX_QUEUE
);
1688 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
)
1689 mask
|= IXGBE_EIMS_GPI_SDP1
;
1690 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
1691 mask
|= IXGBE_EIMS_ECC
;
1692 mask
|= IXGBE_EIMS_GPI_SDP1
;
1693 mask
|= IXGBE_EIMS_GPI_SDP2
;
1695 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
1696 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
1697 mask
|= IXGBE_EIMS_FLOW_DIR
;
1699 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS
, mask
);
1700 ixgbe_irq_enable_queues(adapter
, ~0);
1701 IXGBE_WRITE_FLUSH(&adapter
->hw
);
1705 * ixgbe_intr - legacy mode Interrupt Handler
1706 * @irq: interrupt number
1707 * @data: pointer to a network interface device structure
1709 static irqreturn_t
ixgbe_intr(int irq
, void *data
)
1711 struct net_device
*netdev
= data
;
1712 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
1713 struct ixgbe_hw
*hw
= &adapter
->hw
;
1714 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
1718 * Workaround for silicon errata. Mask the interrupts
1719 * before the read of EICR.
1721 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_IRQ_CLEAR_MASK
);
1723 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
1724 * therefore no explict interrupt disable is necessary */
1725 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICR
);
1727 /* shared interrupt alert!
1728 * make sure interrupts are enabled because the read will
1729 * have disabled interrupts due to EIAM */
1730 ixgbe_irq_enable(adapter
);
1731 return IRQ_NONE
; /* Not our interrupt */
1734 if (eicr
& IXGBE_EICR_LSC
)
1735 ixgbe_check_lsc(adapter
);
1737 if (hw
->mac
.type
== ixgbe_mac_82599EB
)
1738 ixgbe_check_sfp_event(adapter
, eicr
);
1740 ixgbe_check_fan_failure(adapter
, eicr
);
1742 if (napi_schedule_prep(&(q_vector
->napi
))) {
1743 adapter
->tx_ring
[0].total_packets
= 0;
1744 adapter
->tx_ring
[0].total_bytes
= 0;
1745 adapter
->rx_ring
[0].total_packets
= 0;
1746 adapter
->rx_ring
[0].total_bytes
= 0;
1747 /* would disable interrupts here but EIAM disabled it */
1748 __napi_schedule(&(q_vector
->napi
));
1754 static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter
*adapter
)
1756 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1758 for (i
= 0; i
< q_vectors
; i
++) {
1759 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[i
];
1760 bitmap_zero(q_vector
->rxr_idx
, MAX_RX_QUEUES
);
1761 bitmap_zero(q_vector
->txr_idx
, MAX_TX_QUEUES
);
1762 q_vector
->rxr_count
= 0;
1763 q_vector
->txr_count
= 0;
1768 * ixgbe_request_irq - initialize interrupts
1769 * @adapter: board private structure
1771 * Attempts to configure interrupts using the best available
1772 * capabilities of the hardware and kernel.
1774 static int ixgbe_request_irq(struct ixgbe_adapter
*adapter
)
1776 struct net_device
*netdev
= adapter
->netdev
;
1779 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
1780 err
= ixgbe_request_msix_irqs(adapter
);
1781 } else if (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
) {
1782 err
= request_irq(adapter
->pdev
->irq
, &ixgbe_intr
, 0,
1783 netdev
->name
, netdev
);
1785 err
= request_irq(adapter
->pdev
->irq
, &ixgbe_intr
, IRQF_SHARED
,
1786 netdev
->name
, netdev
);
1790 DPRINTK(PROBE
, ERR
, "request_irq failed, Error %d\n", err
);
1795 static void ixgbe_free_irq(struct ixgbe_adapter
*adapter
)
1797 struct net_device
*netdev
= adapter
->netdev
;
1799 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
1802 q_vectors
= adapter
->num_msix_vectors
;
1805 free_irq(adapter
->msix_entries
[i
].vector
, netdev
);
1808 for (; i
>= 0; i
--) {
1809 free_irq(adapter
->msix_entries
[i
].vector
,
1810 adapter
->q_vector
[i
]);
1813 ixgbe_reset_q_vectors(adapter
);
1815 free_irq(adapter
->pdev
->irq
, netdev
);
1820 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
1821 * @adapter: board private structure
1823 static inline void ixgbe_irq_disable(struct ixgbe_adapter
*adapter
)
1825 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1826 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, ~0);
1828 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, 0xFFFF0000);
1829 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(0), ~0);
1830 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(1), ~0);
1832 IXGBE_WRITE_FLUSH(&adapter
->hw
);
1833 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
1835 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
1836 synchronize_irq(adapter
->msix_entries
[i
].vector
);
1838 synchronize_irq(adapter
->pdev
->irq
);
1843 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
1846 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter
*adapter
)
1848 struct ixgbe_hw
*hw
= &adapter
->hw
;
1850 IXGBE_WRITE_REG(hw
, IXGBE_EITR(0),
1851 EITR_INTS_PER_SEC_TO_REG(adapter
->rx_eitr_param
));
1853 ixgbe_set_ivar(adapter
, 0, 0, 0);
1854 ixgbe_set_ivar(adapter
, 1, 0, 0);
1856 map_vector_to_rxq(adapter
, 0, 0);
1857 map_vector_to_txq(adapter
, 0, 0);
1859 DPRINTK(HW
, INFO
, "Legacy interrupt IVAR setup done\n");
1863 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
1864 * @adapter: board private structure
1866 * Configure the Tx unit of the MAC after a reset.
1868 static void ixgbe_configure_tx(struct ixgbe_adapter
*adapter
)
1871 struct ixgbe_hw
*hw
= &adapter
->hw
;
1872 u32 i
, j
, tdlen
, txctrl
;
1874 /* Setup the HW Tx Head and Tail descriptor pointers */
1875 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1876 struct ixgbe_ring
*ring
= &adapter
->tx_ring
[i
];
1879 tdlen
= ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
1880 IXGBE_WRITE_REG(hw
, IXGBE_TDBAL(j
),
1881 (tdba
& DMA_BIT_MASK(32)));
1882 IXGBE_WRITE_REG(hw
, IXGBE_TDBAH(j
), (tdba
>> 32));
1883 IXGBE_WRITE_REG(hw
, IXGBE_TDLEN(j
), tdlen
);
1884 IXGBE_WRITE_REG(hw
, IXGBE_TDH(j
), 0);
1885 IXGBE_WRITE_REG(hw
, IXGBE_TDT(j
), 0);
1886 adapter
->tx_ring
[i
].head
= IXGBE_TDH(j
);
1887 adapter
->tx_ring
[i
].tail
= IXGBE_TDT(j
);
1889 * Disable Tx Head Writeback RO bit, since this hoses
1890 * bookkeeping if things aren't delivered in order.
1892 switch (hw
->mac
.type
) {
1893 case ixgbe_mac_82598EB
:
1894 txctrl
= IXGBE_READ_REG(hw
, IXGBE_DCA_TXCTRL(j
));
1896 case ixgbe_mac_82599EB
:
1898 txctrl
= IXGBE_READ_REG(hw
, IXGBE_DCA_TXCTRL_82599(j
));
1901 txctrl
&= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN
;
1902 switch (hw
->mac
.type
) {
1903 case ixgbe_mac_82598EB
:
1904 IXGBE_WRITE_REG(hw
, IXGBE_DCA_TXCTRL(j
), txctrl
);
1906 case ixgbe_mac_82599EB
:
1908 IXGBE_WRITE_REG(hw
, IXGBE_DCA_TXCTRL_82599(j
), txctrl
);
1912 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
1913 /* We enable 8 traffic classes, DCB only */
1914 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)
1915 IXGBE_WRITE_REG(hw
, IXGBE_MTQC
, (IXGBE_MTQC_RT_ENA
|
1916 IXGBE_MTQC_8TC_8TQ
));
1920 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1922 static void ixgbe_configure_srrctl(struct ixgbe_adapter
*adapter
,
1923 struct ixgbe_ring
*rx_ring
)
1927 struct ixgbe_ring_feature
*feature
= adapter
->ring_feature
;
1929 index
= rx_ring
->reg_idx
;
1930 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1932 mask
= (unsigned long) feature
[RING_F_RSS
].mask
;
1933 index
= index
& mask
;
1935 srrctl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_SRRCTL(index
));
1937 srrctl
&= ~IXGBE_SRRCTL_BSIZEHDR_MASK
;
1938 srrctl
&= ~IXGBE_SRRCTL_BSIZEPKT_MASK
;
1940 srrctl
|= (IXGBE_RX_HDR_SIZE
<< IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT
) &
1941 IXGBE_SRRCTL_BSIZEHDR_MASK
;
1943 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
1944 #if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
1945 srrctl
|= IXGBE_MAX_RXBUFFER
>> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1947 srrctl
|= (PAGE_SIZE
/ 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1949 srrctl
|= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
1951 srrctl
|= ALIGN(rx_ring
->rx_buf_len
, 1024) >>
1952 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
1953 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1956 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_SRRCTL(index
), srrctl
);
1959 static u32
ixgbe_setup_mrqc(struct ixgbe_adapter
*adapter
)
1964 if (!(adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
))
1967 mask
= adapter
->flags
& (IXGBE_FLAG_RSS_ENABLED
1968 #ifdef CONFIG_IXGBE_DCB
1969 | IXGBE_FLAG_DCB_ENABLED
1974 case (IXGBE_FLAG_RSS_ENABLED
):
1975 mrqc
= IXGBE_MRQC_RSSEN
;
1977 #ifdef CONFIG_IXGBE_DCB
1978 case (IXGBE_FLAG_DCB_ENABLED
):
1979 mrqc
= IXGBE_MRQC_RT8TCEN
;
1981 #endif /* CONFIG_IXGBE_DCB */
1990 * ixgbe_configure_rscctl - enable RSC for the indicated ring
1991 * @adapter: address of board private structure
1992 * @index: index of ring to set
1993 * @rx_buf_len: rx buffer length
1995 static void ixgbe_configure_rscctl(struct ixgbe_adapter
*adapter
, int index
,
1998 struct ixgbe_ring
*rx_ring
;
1999 struct ixgbe_hw
*hw
= &adapter
->hw
;
2003 rx_ring
= &adapter
->rx_ring
[index
];
2004 j
= rx_ring
->reg_idx
;
2005 rscctrl
= IXGBE_READ_REG(hw
, IXGBE_RSCCTL(j
));
2006 rscctrl
|= IXGBE_RSCCTL_RSCEN
;
2008 * we must limit the number of descriptors so that the
2009 * total size of max desc * buf_len is not greater
2012 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
2013 #if (MAX_SKB_FRAGS > 16)
2014 rscctrl
|= IXGBE_RSCCTL_MAXDESC_16
;
2015 #elif (MAX_SKB_FRAGS > 8)
2016 rscctrl
|= IXGBE_RSCCTL_MAXDESC_8
;
2017 #elif (MAX_SKB_FRAGS > 4)
2018 rscctrl
|= IXGBE_RSCCTL_MAXDESC_4
;
2020 rscctrl
|= IXGBE_RSCCTL_MAXDESC_1
;
2023 if (rx_buf_len
< IXGBE_RXBUFFER_4096
)
2024 rscctrl
|= IXGBE_RSCCTL_MAXDESC_16
;
2025 else if (rx_buf_len
< IXGBE_RXBUFFER_8192
)
2026 rscctrl
|= IXGBE_RSCCTL_MAXDESC_8
;
2028 rscctrl
|= IXGBE_RSCCTL_MAXDESC_4
;
2030 IXGBE_WRITE_REG(hw
, IXGBE_RSCCTL(j
), rscctrl
);
2034 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
2035 * @adapter: board private structure
2037 * Configure the Rx unit of the MAC after a reset.
2039 static void ixgbe_configure_rx(struct ixgbe_adapter
*adapter
)
2042 struct ixgbe_hw
*hw
= &adapter
->hw
;
2043 struct ixgbe_ring
*rx_ring
;
2044 struct net_device
*netdev
= adapter
->netdev
;
2045 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2047 u32 rdlen
, rxctrl
, rxcsum
;
2048 static const u32 seed
[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
2049 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2050 0x6A3E67EA, 0x14364D17, 0x3BED200D};
2052 u32 reta
= 0, mrqc
= 0;
2056 /* Decide whether to use packet split mode or not */
2057 adapter
->flags
|= IXGBE_FLAG_RX_PS_ENABLED
;
2059 /* Set the RX buffer length according to the mode */
2060 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
2061 rx_buf_len
= IXGBE_RX_HDR_SIZE
;
2062 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2063 /* PSRTYPE must be initialized in 82599 */
2064 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
2065 IXGBE_PSRTYPE_UDPHDR
|
2066 IXGBE_PSRTYPE_IPV4HDR
|
2067 IXGBE_PSRTYPE_IPV6HDR
|
2068 IXGBE_PSRTYPE_L2HDR
;
2069 IXGBE_WRITE_REG(hw
, IXGBE_PSRTYPE(0), psrtype
);
2072 if (!(adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) &&
2073 (netdev
->mtu
<= ETH_DATA_LEN
))
2074 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
2076 rx_buf_len
= ALIGN(max_frame
, 1024);
2079 fctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_FCTRL
);
2080 fctrl
|= IXGBE_FCTRL_BAM
;
2081 fctrl
|= IXGBE_FCTRL_DPF
; /* discard pause frames when FC enabled */
2082 fctrl
|= IXGBE_FCTRL_PMCF
;
2083 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_FCTRL
, fctrl
);
2085 hlreg0
= IXGBE_READ_REG(hw
, IXGBE_HLREG0
);
2086 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2087 hlreg0
&= ~IXGBE_HLREG0_JUMBOEN
;
2089 hlreg0
|= IXGBE_HLREG0_JUMBOEN
;
2091 if (netdev
->features
& NETIF_F_FCOE_MTU
)
2092 hlreg0
|= IXGBE_HLREG0_JUMBOEN
;
2094 IXGBE_WRITE_REG(hw
, IXGBE_HLREG0
, hlreg0
);
2096 rdlen
= adapter
->rx_ring
[0].count
* sizeof(union ixgbe_adv_rx_desc
);
2097 /* disable receives while setting up the descriptors */
2098 rxctrl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
2099 IXGBE_WRITE_REG(hw
, IXGBE_RXCTRL
, rxctrl
& ~IXGBE_RXCTRL_RXEN
);
2102 * Setup the HW Rx Head and Tail Descriptor Pointers and
2103 * the Base and Length of the Rx Descriptor Ring
2105 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2106 rx_ring
= &adapter
->rx_ring
[i
];
2107 rdba
= rx_ring
->dma
;
2108 j
= rx_ring
->reg_idx
;
2109 IXGBE_WRITE_REG(hw
, IXGBE_RDBAL(j
), (rdba
& DMA_BIT_MASK(32)));
2110 IXGBE_WRITE_REG(hw
, IXGBE_RDBAH(j
), (rdba
>> 32));
2111 IXGBE_WRITE_REG(hw
, IXGBE_RDLEN(j
), rdlen
);
2112 IXGBE_WRITE_REG(hw
, IXGBE_RDH(j
), 0);
2113 IXGBE_WRITE_REG(hw
, IXGBE_RDT(j
), 0);
2114 rx_ring
->head
= IXGBE_RDH(j
);
2115 rx_ring
->tail
= IXGBE_RDT(j
);
2116 rx_ring
->rx_buf_len
= rx_buf_len
;
2118 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
)
2119 rx_ring
->flags
|= IXGBE_RING_RX_PS_ENABLED
;
2121 rx_ring
->flags
&= ~IXGBE_RING_RX_PS_ENABLED
;
2124 if (netdev
->features
& NETIF_F_FCOE_MTU
) {
2125 struct ixgbe_ring_feature
*f
;
2126 f
= &adapter
->ring_feature
[RING_F_FCOE
];
2127 if ((i
>= f
->mask
) && (i
< f
->mask
+ f
->indices
)) {
2128 rx_ring
->flags
&= ~IXGBE_RING_RX_PS_ENABLED
;
2129 if (rx_buf_len
< IXGBE_FCOE_JUMBO_FRAME_SIZE
)
2130 rx_ring
->rx_buf_len
=
2131 IXGBE_FCOE_JUMBO_FRAME_SIZE
;
2135 #endif /* IXGBE_FCOE */
2136 ixgbe_configure_srrctl(adapter
, rx_ring
);
2139 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
2141 * For VMDq support of different descriptor types or
2142 * buffer sizes through the use of multiple SRRCTL
2143 * registers, RDRXCTL.MVMEN must be set to 1
2145 * also, the manual doesn't mention it clearly but DCA hints
2146 * will only use queue 0's tags unless this bit is set. Side
2147 * effects of setting this bit are only that SRRCTL must be
2148 * fully programmed [0..15]
2150 rdrxctl
= IXGBE_READ_REG(hw
, IXGBE_RDRXCTL
);
2151 rdrxctl
|= IXGBE_RDRXCTL_MVMEN
;
2152 IXGBE_WRITE_REG(hw
, IXGBE_RDRXCTL
, rdrxctl
);
2155 /* Program MRQC for the distribution of queues */
2156 mrqc
= ixgbe_setup_mrqc(adapter
);
2158 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
2159 /* Fill out redirection table */
2160 for (i
= 0, j
= 0; i
< 128; i
++, j
++) {
2161 if (j
== adapter
->ring_feature
[RING_F_RSS
].indices
)
2163 /* reta = 4-byte sliding window of
2164 * 0x00..(indices-1)(indices-1)00..etc. */
2165 reta
= (reta
<< 8) | (j
* 0x11);
2167 IXGBE_WRITE_REG(hw
, IXGBE_RETA(i
>> 2), reta
);
2170 /* Fill out hash function seeds */
2171 for (i
= 0; i
< 10; i
++)
2172 IXGBE_WRITE_REG(hw
, IXGBE_RSSRK(i
), seed
[i
]);
2174 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
2175 mrqc
|= IXGBE_MRQC_RSSEN
;
2176 /* Perform hash on these packet types */
2177 mrqc
|= IXGBE_MRQC_RSS_FIELD_IPV4
2178 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2179 | IXGBE_MRQC_RSS_FIELD_IPV4_UDP
2180 | IXGBE_MRQC_RSS_FIELD_IPV6
2181 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP
2182 | IXGBE_MRQC_RSS_FIELD_IPV6_UDP
;
2184 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, mrqc
);
2186 rxcsum
= IXGBE_READ_REG(hw
, IXGBE_RXCSUM
);
2188 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
||
2189 adapter
->flags
& IXGBE_FLAG_RX_CSUM_ENABLED
) {
2190 /* Disable indicating checksum in descriptor, enables
2192 rxcsum
|= IXGBE_RXCSUM_PCSD
;
2194 if (!(rxcsum
& IXGBE_RXCSUM_PCSD
)) {
2195 /* Enable IPv4 payload checksum for UDP fragments
2196 * if PCSD is not set */
2197 rxcsum
|= IXGBE_RXCSUM_IPPCSE
;
2200 IXGBE_WRITE_REG(hw
, IXGBE_RXCSUM
, rxcsum
);
2202 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2203 rdrxctl
= IXGBE_READ_REG(hw
, IXGBE_RDRXCTL
);
2204 rdrxctl
|= IXGBE_RDRXCTL_CRCSTRIP
;
2205 rdrxctl
&= ~IXGBE_RDRXCTL_RSCFRSTSIZE
;
2206 IXGBE_WRITE_REG(hw
, IXGBE_RDRXCTL
, rdrxctl
);
2209 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) {
2210 /* Enable 82599 HW-RSC */
2211 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2212 ixgbe_configure_rscctl(adapter
, i
, rx_buf_len
);
2214 /* Disable RSC for ACK packets */
2215 IXGBE_WRITE_REG(hw
, IXGBE_RSCDBU
,
2216 (IXGBE_RSCDBU_RSCACKDIS
| IXGBE_READ_REG(hw
, IXGBE_RSCDBU
)));
2220 static void ixgbe_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2222 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2223 struct ixgbe_hw
*hw
= &adapter
->hw
;
2225 /* add VID to filter table */
2226 hw
->mac
.ops
.set_vfta(&adapter
->hw
, vid
, 0, true);
2229 static void ixgbe_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2231 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2232 struct ixgbe_hw
*hw
= &adapter
->hw
;
2234 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2235 ixgbe_irq_disable(adapter
);
2237 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2239 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2240 ixgbe_irq_enable(adapter
);
2242 /* remove VID from filter table */
2243 hw
->mac
.ops
.set_vfta(&adapter
->hw
, vid
, 0, false);
2246 static void ixgbe_vlan_rx_register(struct net_device
*netdev
,
2247 struct vlan_group
*grp
)
2249 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2253 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2254 ixgbe_irq_disable(adapter
);
2255 adapter
->vlgrp
= grp
;
2258 * For a DCB driver, always enable VLAN tag stripping so we can
2259 * still receive traffic from a DCB-enabled host even if we're
2262 ctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_VLNCTRL
);
2263 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
2264 ctrl
|= IXGBE_VLNCTRL_VME
| IXGBE_VLNCTRL_VFE
;
2265 ctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2266 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_VLNCTRL
, ctrl
);
2267 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
2268 ctrl
|= IXGBE_VLNCTRL_VFE
;
2269 /* enable VLAN tag insert/strip */
2270 ctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_VLNCTRL
);
2271 ctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2272 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_VLNCTRL
, ctrl
);
2273 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2274 j
= adapter
->rx_ring
[i
].reg_idx
;
2275 ctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_RXDCTL(j
));
2276 ctrl
|= IXGBE_RXDCTL_VME
;
2277 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_RXDCTL(j
), ctrl
);
2280 ixgbe_vlan_rx_add_vid(netdev
, 0);
2282 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2283 ixgbe_irq_enable(adapter
);
2286 static void ixgbe_restore_vlan(struct ixgbe_adapter
*adapter
)
2288 ixgbe_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2290 if (adapter
->vlgrp
) {
2292 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2293 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2295 ixgbe_vlan_rx_add_vid(adapter
->netdev
, vid
);
2300 static u8
*ixgbe_addr_list_itr(struct ixgbe_hw
*hw
, u8
**mc_addr_ptr
, u32
*vmdq
)
2302 struct dev_mc_list
*mc_ptr
;
2303 u8
*addr
= *mc_addr_ptr
;
2306 mc_ptr
= container_of(addr
, struct dev_mc_list
, dmi_addr
[0]);
2308 *mc_addr_ptr
= mc_ptr
->next
->dmi_addr
;
2310 *mc_addr_ptr
= NULL
;
2316 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
2317 * @netdev: network interface device structure
2319 * The set_rx_method entry point is called whenever the unicast/multicast
2320 * address list or the network interface flags are updated. This routine is
2321 * responsible for configuring the hardware for proper unicast, multicast and
2324 static void ixgbe_set_rx_mode(struct net_device
*netdev
)
2326 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2327 struct ixgbe_hw
*hw
= &adapter
->hw
;
2329 u8
*addr_list
= NULL
;
2332 /* Check for Promiscuous and All Multicast modes */
2334 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
2335 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
2337 if (netdev
->flags
& IFF_PROMISC
) {
2338 hw
->addr_ctrl
.user_set_promisc
= 1;
2339 fctrl
|= (IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
2340 vlnctrl
&= ~IXGBE_VLNCTRL_VFE
;
2342 if (netdev
->flags
& IFF_ALLMULTI
) {
2343 fctrl
|= IXGBE_FCTRL_MPE
;
2344 fctrl
&= ~IXGBE_FCTRL_UPE
;
2346 fctrl
&= ~(IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
2348 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
2349 hw
->addr_ctrl
.user_set_promisc
= 0;
2352 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
2353 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
2355 /* reprogram secondary unicast list */
2356 hw
->mac
.ops
.update_uc_addr_list(hw
, &netdev
->uc
.list
);
2358 /* reprogram multicast list */
2359 addr_count
= netdev
->mc_count
;
2361 addr_list
= netdev
->mc_list
->dmi_addr
;
2362 hw
->mac
.ops
.update_mc_addr_list(hw
, addr_list
, addr_count
,
2363 ixgbe_addr_list_itr
);
2366 static void ixgbe_napi_enable_all(struct ixgbe_adapter
*adapter
)
2369 struct ixgbe_q_vector
*q_vector
;
2370 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2372 /* legacy and MSI only use one vector */
2373 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
))
2376 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
2377 struct napi_struct
*napi
;
2378 q_vector
= adapter
->q_vector
[q_idx
];
2379 napi
= &q_vector
->napi
;
2380 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
2381 if (!q_vector
->rxr_count
|| !q_vector
->txr_count
) {
2382 if (q_vector
->txr_count
== 1)
2383 napi
->poll
= &ixgbe_clean_txonly
;
2384 else if (q_vector
->rxr_count
== 1)
2385 napi
->poll
= &ixgbe_clean_rxonly
;
2393 static void ixgbe_napi_disable_all(struct ixgbe_adapter
*adapter
)
2396 struct ixgbe_q_vector
*q_vector
;
2397 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2399 /* legacy and MSI only use one vector */
2400 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
))
2403 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
2404 q_vector
= adapter
->q_vector
[q_idx
];
2405 napi_disable(&q_vector
->napi
);
2409 #ifdef CONFIG_IXGBE_DCB
2411 * ixgbe_configure_dcb - Configure DCB hardware
2412 * @adapter: ixgbe adapter struct
2414 * This is called by the driver on open to configure the DCB hardware.
2415 * This is also called by the gennetlink interface when reconfiguring
2418 static void ixgbe_configure_dcb(struct ixgbe_adapter
*adapter
)
2420 struct ixgbe_hw
*hw
= &adapter
->hw
;
2421 u32 txdctl
, vlnctrl
;
2424 ixgbe_dcb_check_config(&adapter
->dcb_cfg
);
2425 ixgbe_dcb_calculate_tc_credits(&adapter
->dcb_cfg
, DCB_TX_CONFIG
);
2426 ixgbe_dcb_calculate_tc_credits(&adapter
->dcb_cfg
, DCB_RX_CONFIG
);
2428 /* reconfigure the hardware */
2429 ixgbe_dcb_hw_config(&adapter
->hw
, &adapter
->dcb_cfg
);
2431 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2432 j
= adapter
->tx_ring
[i
].reg_idx
;
2433 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2434 /* PThresh workaround for Tx hang with DFP enabled. */
2436 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
), txdctl
);
2438 /* Enable VLAN tag insert/strip */
2439 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
2440 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
2441 vlnctrl
|= IXGBE_VLNCTRL_VME
| IXGBE_VLNCTRL_VFE
;
2442 vlnctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2443 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
2444 } else if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2445 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
2446 vlnctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2447 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
2448 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2449 j
= adapter
->rx_ring
[i
].reg_idx
;
2450 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
2451 vlnctrl
|= IXGBE_RXDCTL_VME
;
2452 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), vlnctrl
);
2455 hw
->mac
.ops
.set_vfta(&adapter
->hw
, 0, 0, true);
2459 static void ixgbe_configure(struct ixgbe_adapter
*adapter
)
2461 struct net_device
*netdev
= adapter
->netdev
;
2462 struct ixgbe_hw
*hw
= &adapter
->hw
;
2465 ixgbe_set_rx_mode(netdev
);
2467 ixgbe_restore_vlan(adapter
);
2468 #ifdef CONFIG_IXGBE_DCB
2469 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
2470 netif_set_gso_max_size(netdev
, 32768);
2471 ixgbe_configure_dcb(adapter
);
2473 netif_set_gso_max_size(netdev
, 65536);
2476 netif_set_gso_max_size(netdev
, 65536);
2480 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
2481 ixgbe_configure_fcoe(adapter
);
2483 #endif /* IXGBE_FCOE */
2484 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
2485 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2486 adapter
->tx_ring
[i
].atr_sample_rate
=
2487 adapter
->atr_sample_rate
;
2488 ixgbe_init_fdir_signature_82599(hw
, adapter
->fdir_pballoc
);
2489 } else if (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
) {
2490 ixgbe_init_fdir_perfect_82599(hw
, adapter
->fdir_pballoc
);
2493 ixgbe_configure_tx(adapter
);
2494 ixgbe_configure_rx(adapter
);
2495 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2496 ixgbe_alloc_rx_buffers(adapter
, &adapter
->rx_ring
[i
],
2497 (adapter
->rx_ring
[i
].count
- 1));
2500 static inline bool ixgbe_is_sfp(struct ixgbe_hw
*hw
)
2502 switch (hw
->phy
.type
) {
2503 case ixgbe_phy_sfp_avago
:
2504 case ixgbe_phy_sfp_ftl
:
2505 case ixgbe_phy_sfp_intel
:
2506 case ixgbe_phy_sfp_unknown
:
2507 case ixgbe_phy_tw_tyco
:
2508 case ixgbe_phy_tw_unknown
:
2516 * ixgbe_sfp_link_config - set up SFP+ link
2517 * @adapter: pointer to private adapter struct
2519 static void ixgbe_sfp_link_config(struct ixgbe_adapter
*adapter
)
2521 struct ixgbe_hw
*hw
= &adapter
->hw
;
2523 if (hw
->phy
.multispeed_fiber
) {
2525 * In multispeed fiber setups, the device may not have
2526 * had a physical connection when the driver loaded.
2527 * If that's the case, the initial link configuration
2528 * couldn't get the MAC into 10G or 1G mode, so we'll
2529 * never have a link status change interrupt fire.
2530 * We need to try and force an autonegotiation
2531 * session, then bring up link.
2533 hw
->mac
.ops
.setup_sfp(hw
);
2534 if (!(adapter
->flags
& IXGBE_FLAG_IN_SFP_LINK_TASK
))
2535 schedule_work(&adapter
->multispeed_fiber_task
);
2538 * Direct Attach Cu and non-multispeed fiber modules
2539 * still need to be configured properly prior to
2542 if (!(adapter
->flags
& IXGBE_FLAG_IN_SFP_MOD_TASK
))
2543 schedule_work(&adapter
->sfp_config_module_task
);
2548 * ixgbe_non_sfp_link_config - set up non-SFP+ link
2549 * @hw: pointer to private hardware struct
2551 * Returns 0 on success, negative on failure
2553 static int ixgbe_non_sfp_link_config(struct ixgbe_hw
*hw
)
2556 bool negotiation
, link_up
= false;
2557 u32 ret
= IXGBE_ERR_LINK_SETUP
;
2559 if (hw
->mac
.ops
.check_link
)
2560 ret
= hw
->mac
.ops
.check_link(hw
, &autoneg
, &link_up
, false);
2565 if (hw
->mac
.ops
.get_link_capabilities
)
2566 ret
= hw
->mac
.ops
.get_link_capabilities(hw
, &autoneg
, &negotiation
);
2570 if (hw
->mac
.ops
.setup_link
)
2571 ret
= hw
->mac
.ops
.setup_link(hw
, autoneg
, negotiation
, link_up
);
2576 #define IXGBE_MAX_RX_DESC_POLL 10
2577 static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter
*adapter
,
2580 int j
= adapter
->rx_ring
[rxr
].reg_idx
;
2583 for (k
= 0; k
< IXGBE_MAX_RX_DESC_POLL
; k
++) {
2584 if (IXGBE_READ_REG(&adapter
->hw
,
2585 IXGBE_RXDCTL(j
)) & IXGBE_RXDCTL_ENABLE
)
2590 if (k
>= IXGBE_MAX_RX_DESC_POLL
) {
2591 DPRINTK(DRV
, ERR
, "RXDCTL.ENABLE on Rx queue %d "
2592 "not set within the polling period\n", rxr
);
2594 ixgbe_release_rx_desc(&adapter
->hw
, &adapter
->rx_ring
[rxr
],
2595 (adapter
->rx_ring
[rxr
].count
- 1));
2598 static int ixgbe_up_complete(struct ixgbe_adapter
*adapter
)
2600 struct net_device
*netdev
= adapter
->netdev
;
2601 struct ixgbe_hw
*hw
= &adapter
->hw
;
2603 int num_rx_rings
= adapter
->num_rx_queues
;
2605 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2606 u32 txdctl
, rxdctl
, mhadd
;
2610 ixgbe_get_hw_control(adapter
);
2612 if ((adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) ||
2613 (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
)) {
2614 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
2615 gpie
= (IXGBE_GPIE_MSIX_MODE
| IXGBE_GPIE_EIAME
|
2616 IXGBE_GPIE_PBA_SUPPORT
| IXGBE_GPIE_OCD
);
2621 /* XXX: to interrupt immediately for EICS writes, enable this */
2622 /* gpie |= IXGBE_GPIE_EIMEN; */
2623 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
2626 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
2627 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
2628 * specifically only auto mask tx and rx interrupts */
2629 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
2632 /* Enable fan failure interrupt if media type is copper */
2633 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
2634 gpie
= IXGBE_READ_REG(hw
, IXGBE_GPIE
);
2635 gpie
|= IXGBE_SDP1_GPIEN
;
2636 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
2639 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2640 gpie
= IXGBE_READ_REG(hw
, IXGBE_GPIE
);
2641 gpie
|= IXGBE_SDP1_GPIEN
;
2642 gpie
|= IXGBE_SDP2_GPIEN
;
2643 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
2647 /* adjust max frame to be able to do baby jumbo for FCoE */
2648 if ((netdev
->features
& NETIF_F_FCOE_MTU
) &&
2649 (max_frame
< IXGBE_FCOE_JUMBO_FRAME_SIZE
))
2650 max_frame
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
2652 #endif /* IXGBE_FCOE */
2653 mhadd
= IXGBE_READ_REG(hw
, IXGBE_MHADD
);
2654 if (max_frame
!= (mhadd
>> IXGBE_MHADD_MFS_SHIFT
)) {
2655 mhadd
&= ~IXGBE_MHADD_MFS_MASK
;
2656 mhadd
|= max_frame
<< IXGBE_MHADD_MFS_SHIFT
;
2658 IXGBE_WRITE_REG(hw
, IXGBE_MHADD
, mhadd
);
2661 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2662 j
= adapter
->tx_ring
[i
].reg_idx
;
2663 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2664 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2665 txdctl
|= (8 << 16);
2666 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
), txdctl
);
2669 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2670 /* DMATXCTL.EN must be set after all Tx queue config is done */
2671 dmatxctl
= IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
);
2672 dmatxctl
|= IXGBE_DMATXCTL_TE
;
2673 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
, dmatxctl
);
2675 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2676 j
= adapter
->tx_ring
[i
].reg_idx
;
2677 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2678 txdctl
|= IXGBE_TXDCTL_ENABLE
;
2679 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
), txdctl
);
2682 for (i
= 0; i
< num_rx_rings
; i
++) {
2683 j
= adapter
->rx_ring
[i
].reg_idx
;
2684 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
2685 /* enable PTHRESH=32 descriptors (half the internal cache)
2686 * and HTHRESH=0 descriptors (to minimize latency on fetch),
2687 * this also removes a pesky rx_no_buffer_count increment */
2689 rxdctl
|= IXGBE_RXDCTL_ENABLE
;
2690 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), rxdctl
);
2691 if (hw
->mac
.type
== ixgbe_mac_82599EB
)
2692 ixgbe_rx_desc_queue_enable(adapter
, i
);
2694 /* enable all receives */
2695 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
2696 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
2697 rxdctl
|= (IXGBE_RXCTRL_DMBYPS
| IXGBE_RXCTRL_RXEN
);
2699 rxdctl
|= IXGBE_RXCTRL_RXEN
;
2700 hw
->mac
.ops
.enable_rx_dma(hw
, rxdctl
);
2702 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
2703 ixgbe_configure_msix(adapter
);
2705 ixgbe_configure_msi_and_legacy(adapter
);
2707 clear_bit(__IXGBE_DOWN
, &adapter
->state
);
2708 ixgbe_napi_enable_all(adapter
);
2710 /* clear any pending interrupts, may auto mask */
2711 IXGBE_READ_REG(hw
, IXGBE_EICR
);
2713 ixgbe_irq_enable(adapter
);
2716 * If this adapter has a fan, check to see if we had a failure
2717 * before we enabled the interrupt.
2719 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
2720 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
2721 if (esdp
& IXGBE_ESDP_SDP1
)
2723 "Fan has stopped, replace the adapter\n");
2727 * For hot-pluggable SFP+ devices, a new SFP+ module may have
2728 * arrived before interrupts were enabled but after probe. Such
2729 * devices wouldn't have their type identified yet. We need to
2730 * kick off the SFP+ module setup first, then try to bring up link.
2731 * If we're not hot-pluggable SFP+, we just need to configure link
2734 if (hw
->phy
.type
== ixgbe_phy_unknown
) {
2735 err
= hw
->phy
.ops
.identify(hw
);
2736 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
2738 * Take the device down and schedule the sfp tasklet
2739 * which will unregister_netdev and log it.
2741 ixgbe_down(adapter
);
2742 schedule_work(&adapter
->sfp_config_module_task
);
2747 if (ixgbe_is_sfp(hw
)) {
2748 ixgbe_sfp_link_config(adapter
);
2750 err
= ixgbe_non_sfp_link_config(hw
);
2752 DPRINTK(PROBE
, ERR
, "link_config FAILED %d\n", err
);
2755 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2756 set_bit(__IXGBE_FDIR_INIT_DONE
,
2757 &(adapter
->tx_ring
[i
].reinit_state
));
2759 /* enable transmits */
2760 netif_tx_start_all_queues(netdev
);
2762 /* bring the link up in the watchdog, this could race with our first
2763 * link up interrupt but shouldn't be a problem */
2764 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
2765 adapter
->link_check_timeout
= jiffies
;
2766 mod_timer(&adapter
->watchdog_timer
, jiffies
);
2770 void ixgbe_reinit_locked(struct ixgbe_adapter
*adapter
)
2772 WARN_ON(in_interrupt());
2773 while (test_and_set_bit(__IXGBE_RESETTING
, &adapter
->state
))
2775 ixgbe_down(adapter
);
2777 clear_bit(__IXGBE_RESETTING
, &adapter
->state
);
2780 int ixgbe_up(struct ixgbe_adapter
*adapter
)
2782 /* hardware has been reset, we need to reload some things */
2783 ixgbe_configure(adapter
);
2785 return ixgbe_up_complete(adapter
);
2788 void ixgbe_reset(struct ixgbe_adapter
*adapter
)
2790 struct ixgbe_hw
*hw
= &adapter
->hw
;
2793 err
= hw
->mac
.ops
.init_hw(hw
);
2796 case IXGBE_ERR_SFP_NOT_PRESENT
:
2798 case IXGBE_ERR_MASTER_REQUESTS_PENDING
:
2799 dev_err(&adapter
->pdev
->dev
, "master disable timed out\n");
2801 case IXGBE_ERR_EEPROM_VERSION
:
2802 /* We are running on a pre-production device, log a warning */
2803 dev_warn(&adapter
->pdev
->dev
, "This device is a pre-production "
2804 "adapter/LOM. Please be aware there may be issues "
2805 "associated with your hardware. If you are "
2806 "experiencing problems please contact your Intel or "
2807 "hardware representative who provided you with this "
2811 dev_err(&adapter
->pdev
->dev
, "Hardware Error: %d\n", err
);
2814 /* reprogram the RAR[0] in case user changed it. */
2815 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0, IXGBE_RAH_AV
);
2819 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
2820 * @adapter: board private structure
2821 * @rx_ring: ring to free buffers from
2823 static void ixgbe_clean_rx_ring(struct ixgbe_adapter
*adapter
,
2824 struct ixgbe_ring
*rx_ring
)
2826 struct pci_dev
*pdev
= adapter
->pdev
;
2830 /* Free all the Rx ring sk_buffs */
2832 for (i
= 0; i
< rx_ring
->count
; i
++) {
2833 struct ixgbe_rx_buffer
*rx_buffer_info
;
2835 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
2836 if (rx_buffer_info
->dma
) {
2837 pci_unmap_single(pdev
, rx_buffer_info
->dma
,
2838 rx_ring
->rx_buf_len
,
2839 PCI_DMA_FROMDEVICE
);
2840 rx_buffer_info
->dma
= 0;
2842 if (rx_buffer_info
->skb
) {
2843 struct sk_buff
*skb
= rx_buffer_info
->skb
;
2844 rx_buffer_info
->skb
= NULL
;
2846 struct sk_buff
*this = skb
;
2848 dev_kfree_skb(this);
2851 if (!rx_buffer_info
->page
)
2853 if (rx_buffer_info
->page_dma
) {
2854 pci_unmap_page(pdev
, rx_buffer_info
->page_dma
,
2855 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
2856 rx_buffer_info
->page_dma
= 0;
2858 put_page(rx_buffer_info
->page
);
2859 rx_buffer_info
->page
= NULL
;
2860 rx_buffer_info
->page_offset
= 0;
2863 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
2864 memset(rx_ring
->rx_buffer_info
, 0, size
);
2866 /* Zero out the descriptor ring */
2867 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2869 rx_ring
->next_to_clean
= 0;
2870 rx_ring
->next_to_use
= 0;
2873 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
2875 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
2879 * ixgbe_clean_tx_ring - Free Tx Buffers
2880 * @adapter: board private structure
2881 * @tx_ring: ring to be cleaned
2883 static void ixgbe_clean_tx_ring(struct ixgbe_adapter
*adapter
,
2884 struct ixgbe_ring
*tx_ring
)
2886 struct ixgbe_tx_buffer
*tx_buffer_info
;
2890 /* Free all the Tx ring sk_buffs */
2892 for (i
= 0; i
< tx_ring
->count
; i
++) {
2893 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
2894 ixgbe_unmap_and_free_tx_resource(adapter
, tx_buffer_info
);
2897 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
2898 memset(tx_ring
->tx_buffer_info
, 0, size
);
2900 /* Zero out the descriptor ring */
2901 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2903 tx_ring
->next_to_use
= 0;
2904 tx_ring
->next_to_clean
= 0;
2907 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2909 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2913 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
2914 * @adapter: board private structure
2916 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter
*adapter
)
2920 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2921 ixgbe_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2925 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
2926 * @adapter: board private structure
2928 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter
*adapter
)
2932 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2933 ixgbe_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2936 void ixgbe_down(struct ixgbe_adapter
*adapter
)
2938 struct net_device
*netdev
= adapter
->netdev
;
2939 struct ixgbe_hw
*hw
= &adapter
->hw
;
2944 /* signal that we are down to the interrupt handler */
2945 set_bit(__IXGBE_DOWN
, &adapter
->state
);
2947 /* disable receives */
2948 rxctrl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
2949 IXGBE_WRITE_REG(hw
, IXGBE_RXCTRL
, rxctrl
& ~IXGBE_RXCTRL_RXEN
);
2951 netif_tx_disable(netdev
);
2953 IXGBE_WRITE_FLUSH(hw
);
2956 netif_tx_stop_all_queues(netdev
);
2958 ixgbe_irq_disable(adapter
);
2960 ixgbe_napi_disable_all(adapter
);
2962 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
2963 del_timer_sync(&adapter
->sfp_timer
);
2964 del_timer_sync(&adapter
->watchdog_timer
);
2965 cancel_work_sync(&adapter
->watchdog_task
);
2967 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
2968 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
2969 cancel_work_sync(&adapter
->fdir_reinit_task
);
2971 /* disable transmits in the hardware now that interrupts are off */
2972 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2973 j
= adapter
->tx_ring
[i
].reg_idx
;
2974 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2975 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
),
2976 (txdctl
& ~IXGBE_TXDCTL_ENABLE
));
2978 /* Disable the Tx DMA engine on 82599 */
2979 if (hw
->mac
.type
== ixgbe_mac_82599EB
)
2980 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
,
2981 (IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
) &
2982 ~IXGBE_DMATXCTL_TE
));
2984 netif_carrier_off(netdev
);
2986 if (!pci_channel_offline(adapter
->pdev
))
2987 ixgbe_reset(adapter
);
2988 ixgbe_clean_all_tx_rings(adapter
);
2989 ixgbe_clean_all_rx_rings(adapter
);
2991 #ifdef CONFIG_IXGBE_DCA
2992 /* since we reset the hardware DCA settings were cleared */
2993 ixgbe_setup_dca(adapter
);
2998 * ixgbe_poll - NAPI Rx polling callback
2999 * @napi: structure for representing this polling device
3000 * @budget: how many packets driver is allowed to clean
3002 * This function is used for legacy and MSI, NAPI mode
3004 static int ixgbe_poll(struct napi_struct
*napi
, int budget
)
3006 struct ixgbe_q_vector
*q_vector
=
3007 container_of(napi
, struct ixgbe_q_vector
, napi
);
3008 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
3009 int tx_clean_complete
, work_done
= 0;
3011 #ifdef CONFIG_IXGBE_DCA
3012 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
3013 ixgbe_update_tx_dca(adapter
, adapter
->tx_ring
);
3014 ixgbe_update_rx_dca(adapter
, adapter
->rx_ring
);
3018 tx_clean_complete
= ixgbe_clean_tx_irq(q_vector
, adapter
->tx_ring
);
3019 ixgbe_clean_rx_irq(q_vector
, adapter
->rx_ring
, &work_done
, budget
);
3021 if (!tx_clean_complete
)
3024 /* If budget not fully consumed, exit the polling mode */
3025 if (work_done
< budget
) {
3026 napi_complete(napi
);
3027 if (adapter
->rx_itr_setting
& 1)
3028 ixgbe_set_itr(adapter
);
3029 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3030 ixgbe_irq_enable_queues(adapter
, IXGBE_EIMS_RTX_QUEUE
);
3036 * ixgbe_tx_timeout - Respond to a Tx Hang
3037 * @netdev: network interface device structure
3039 static void ixgbe_tx_timeout(struct net_device
*netdev
)
3041 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
3043 /* Do the reset outside of interrupt context */
3044 schedule_work(&adapter
->reset_task
);
3047 static void ixgbe_reset_task(struct work_struct
*work
)
3049 struct ixgbe_adapter
*adapter
;
3050 adapter
= container_of(work
, struct ixgbe_adapter
, reset_task
);
3052 /* If we're already down or resetting, just bail */
3053 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
3054 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
3057 adapter
->tx_timeout_count
++;
3059 ixgbe_reinit_locked(adapter
);
3062 #ifdef CONFIG_IXGBE_DCB
3063 static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter
*adapter
)
3066 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_DCB
];
3068 if (!(adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
))
3072 adapter
->num_rx_queues
= f
->indices
;
3073 adapter
->num_tx_queues
= f
->indices
;
3081 * ixgbe_set_rss_queues: Allocate queues for RSS
3082 * @adapter: board private structure to initialize
3084 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3085 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3088 static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter
*adapter
)
3091 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_RSS
];
3093 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3095 adapter
->num_rx_queues
= f
->indices
;
3096 adapter
->num_tx_queues
= f
->indices
;
3106 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3107 * @adapter: board private structure to initialize
3109 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3110 * to the original CPU that initiated the Tx session. This runs in addition
3111 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3112 * Rx load across CPUs using RSS.
3115 static bool inline ixgbe_set_fdir_queues(struct ixgbe_adapter
*adapter
)
3118 struct ixgbe_ring_feature
*f_fdir
= &adapter
->ring_feature
[RING_F_FDIR
];
3120 f_fdir
->indices
= min((int)num_online_cpus(), f_fdir
->indices
);
3123 /* Flow Director must have RSS enabled */
3124 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
&&
3125 ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
3126 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)))) {
3127 adapter
->num_tx_queues
= f_fdir
->indices
;
3128 adapter
->num_rx_queues
= f_fdir
->indices
;
3131 adapter
->flags
&= ~IXGBE_FLAG_FDIR_HASH_CAPABLE
;
3132 adapter
->flags
&= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
3139 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
3140 * @adapter: board private structure to initialize
3142 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
3143 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
3144 * rx queues out of the max number of rx queues, instead, it is used as the
3145 * index of the first rx queue used by FCoE.
3148 static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter
*adapter
)
3151 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_FCOE
];
3153 f
->indices
= min((int)num_online_cpus(), f
->indices
);
3154 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
3155 adapter
->num_rx_queues
= 1;
3156 adapter
->num_tx_queues
= 1;
3157 #ifdef CONFIG_IXGBE_DCB
3158 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
3159 DPRINTK(PROBE
, INFO
, "FCoE enabled with DCB \n");
3160 ixgbe_set_dcb_queues(adapter
);
3163 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3164 DPRINTK(PROBE
, INFO
, "FCoE enabled with RSS \n");
3165 if ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) ||
3166 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))
3167 ixgbe_set_fdir_queues(adapter
);
3169 ixgbe_set_rss_queues(adapter
);
3171 /* adding FCoE rx rings to the end */
3172 f
->mask
= adapter
->num_rx_queues
;
3173 adapter
->num_rx_queues
+= f
->indices
;
3174 adapter
->num_tx_queues
+= f
->indices
;
3182 #endif /* IXGBE_FCOE */
3184 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
3185 * @adapter: board private structure to initialize
3187 * This is the top level queue allocation routine. The order here is very
3188 * important, starting with the "most" number of features turned on at once,
3189 * and ending with the smallest set of features. This way large combinations
3190 * can be allocated if they're turned on, and smaller combinations are the
3191 * fallthrough conditions.
3194 static void ixgbe_set_num_queues(struct ixgbe_adapter
*adapter
)
3197 if (ixgbe_set_fcoe_queues(adapter
))
3200 #endif /* IXGBE_FCOE */
3201 #ifdef CONFIG_IXGBE_DCB
3202 if (ixgbe_set_dcb_queues(adapter
))
3206 if (ixgbe_set_fdir_queues(adapter
))
3209 if (ixgbe_set_rss_queues(adapter
))
3212 /* fallback to base case */
3213 adapter
->num_rx_queues
= 1;
3214 adapter
->num_tx_queues
= 1;
3217 /* Notify the stack of the (possibly) reduced Tx Queue count. */
3218 adapter
->netdev
->real_num_tx_queues
= adapter
->num_tx_queues
;
3221 static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter
*adapter
,
3224 int err
, vector_threshold
;
3226 /* We'll want at least 3 (vector_threshold):
3229 * 3) Other (Link Status Change, etc.)
3230 * 4) TCP Timer (optional)
3232 vector_threshold
= MIN_MSIX_COUNT
;
3234 /* The more we get, the more we will assign to Tx/Rx Cleanup
3235 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
3236 * Right now, we simply care about how many we'll get; we'll
3237 * set them up later while requesting irq's.
3239 while (vectors
>= vector_threshold
) {
3240 err
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
3242 if (!err
) /* Success in acquiring all requested vectors. */
3245 vectors
= 0; /* Nasty failure, quit now */
3246 else /* err == number of vectors we should try again with */
3250 if (vectors
< vector_threshold
) {
3251 /* Can't allocate enough MSI-X interrupts? Oh well.
3252 * This just means we'll go with either a single MSI
3253 * vector or fall back to legacy interrupts.
3255 DPRINTK(HW
, DEBUG
, "Unable to allocate MSI-X interrupts\n");
3256 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
3257 kfree(adapter
->msix_entries
);
3258 adapter
->msix_entries
= NULL
;
3260 adapter
->flags
|= IXGBE_FLAG_MSIX_ENABLED
; /* Woot! */
3262 * Adjust for only the vectors we'll use, which is minimum
3263 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
3264 * vectors we were allocated.
3266 adapter
->num_msix_vectors
= min(vectors
,
3267 adapter
->max_msix_q_vectors
+ NON_Q_VECTORS
);
3272 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
3273 * @adapter: board private structure to initialize
3275 * Cache the descriptor ring offsets for RSS to the assigned rings.
3278 static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter
*adapter
)
3283 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3284 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3285 adapter
->rx_ring
[i
].reg_idx
= i
;
3286 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3287 adapter
->tx_ring
[i
].reg_idx
= i
;
3296 #ifdef CONFIG_IXGBE_DCB
3298 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
3299 * @adapter: board private structure to initialize
3301 * Cache the descriptor ring offsets for DCB to the assigned rings.
3304 static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter
*adapter
)
3308 int dcb_i
= adapter
->ring_feature
[RING_F_DCB
].indices
;
3310 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
3311 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
3312 /* the number of queues is assumed to be symmetric */
3313 for (i
= 0; i
< dcb_i
; i
++) {
3314 adapter
->rx_ring
[i
].reg_idx
= i
<< 3;
3315 adapter
->tx_ring
[i
].reg_idx
= i
<< 2;
3318 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
3321 * Tx TC0 starts at: descriptor queue 0
3322 * Tx TC1 starts at: descriptor queue 32
3323 * Tx TC2 starts at: descriptor queue 64
3324 * Tx TC3 starts at: descriptor queue 80
3325 * Tx TC4 starts at: descriptor queue 96
3326 * Tx TC5 starts at: descriptor queue 104
3327 * Tx TC6 starts at: descriptor queue 112
3328 * Tx TC7 starts at: descriptor queue 120
3330 * Rx TC0-TC7 are offset by 16 queues each
3332 for (i
= 0; i
< 3; i
++) {
3333 adapter
->tx_ring
[i
].reg_idx
= i
<< 5;
3334 adapter
->rx_ring
[i
].reg_idx
= i
<< 4;
3336 for ( ; i
< 5; i
++) {
3337 adapter
->tx_ring
[i
].reg_idx
=
3339 adapter
->rx_ring
[i
].reg_idx
= i
<< 4;
3341 for ( ; i
< dcb_i
; i
++) {
3342 adapter
->tx_ring
[i
].reg_idx
=
3344 adapter
->rx_ring
[i
].reg_idx
= i
<< 4;
3348 } else if (dcb_i
== 4) {
3350 * Tx TC0 starts at: descriptor queue 0
3351 * Tx TC1 starts at: descriptor queue 64
3352 * Tx TC2 starts at: descriptor queue 96
3353 * Tx TC3 starts at: descriptor queue 112
3355 * Rx TC0-TC3 are offset by 32 queues each
3357 adapter
->tx_ring
[0].reg_idx
= 0;
3358 adapter
->tx_ring
[1].reg_idx
= 64;
3359 adapter
->tx_ring
[2].reg_idx
= 96;
3360 adapter
->tx_ring
[3].reg_idx
= 112;
3361 for (i
= 0 ; i
< dcb_i
; i
++)
3362 adapter
->rx_ring
[i
].reg_idx
= i
<< 5;
3380 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
3381 * @adapter: board private structure to initialize
3383 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
3386 static bool inline ixgbe_cache_ring_fdir(struct ixgbe_adapter
*adapter
)
3391 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
&&
3392 ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) ||
3393 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))) {
3394 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3395 adapter
->rx_ring
[i
].reg_idx
= i
;
3396 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3397 adapter
->tx_ring
[i
].reg_idx
= i
;
3406 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
3407 * @adapter: board private structure to initialize
3409 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
3412 static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter
*adapter
)
3414 int i
, fcoe_rx_i
= 0, fcoe_tx_i
= 0;
3416 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_FCOE
];
3418 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
3419 #ifdef CONFIG_IXGBE_DCB
3420 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
3421 struct ixgbe_fcoe
*fcoe
= &adapter
->fcoe
;
3423 ixgbe_cache_ring_dcb(adapter
);
3424 /* find out queues in TC for FCoE */
3425 fcoe_rx_i
= adapter
->rx_ring
[fcoe
->tc
].reg_idx
+ 1;
3426 fcoe_tx_i
= adapter
->tx_ring
[fcoe
->tc
].reg_idx
+ 1;
3428 * In 82599, the number of Tx queues for each traffic
3429 * class for both 8-TC and 4-TC modes are:
3430 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
3431 * 8 TCs: 32 32 16 16 8 8 8 8
3432 * 4 TCs: 64 64 32 32
3433 * We have max 8 queues for FCoE, where 8 the is
3434 * FCoE redirection table size. If TC for FCoE is
3435 * less than or equal to TC3, we have enough queues
3436 * to add max of 8 queues for FCoE, so we start FCoE
3437 * tx descriptor from the next one, i.e., reg_idx + 1.
3438 * If TC for FCoE is above TC3, implying 8 TC mode,
3439 * and we need 8 for FCoE, we have to take all queues
3440 * in that traffic class for FCoE.
3442 if ((f
->indices
== IXGBE_FCRETA_SIZE
) && (fcoe
->tc
> 3))
3445 #endif /* CONFIG_IXGBE_DCB */
3446 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3447 if ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) ||
3448 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))
3449 ixgbe_cache_ring_fdir(adapter
);
3451 ixgbe_cache_ring_rss(adapter
);
3453 fcoe_rx_i
= f
->mask
;
3454 fcoe_tx_i
= f
->mask
;
3456 for (i
= 0; i
< f
->indices
; i
++, fcoe_rx_i
++, fcoe_tx_i
++) {
3457 adapter
->rx_ring
[f
->mask
+ i
].reg_idx
= fcoe_rx_i
;
3458 adapter
->tx_ring
[f
->mask
+ i
].reg_idx
= fcoe_tx_i
;
3465 #endif /* IXGBE_FCOE */
3467 * ixgbe_cache_ring_register - Descriptor ring to register mapping
3468 * @adapter: board private structure to initialize
3470 * Once we know the feature-set enabled for the device, we'll cache
3471 * the register offset the descriptor ring is assigned to.
3473 * Note, the order the various feature calls is important. It must start with
3474 * the "most" features enabled at the same time, then trickle down to the
3475 * least amount of features turned on at once.
3477 static void ixgbe_cache_ring_register(struct ixgbe_adapter
*adapter
)
3479 /* start with default case */
3480 adapter
->rx_ring
[0].reg_idx
= 0;
3481 adapter
->tx_ring
[0].reg_idx
= 0;
3484 if (ixgbe_cache_ring_fcoe(adapter
))
3487 #endif /* IXGBE_FCOE */
3488 #ifdef CONFIG_IXGBE_DCB
3489 if (ixgbe_cache_ring_dcb(adapter
))
3493 if (ixgbe_cache_ring_fdir(adapter
))
3496 if (ixgbe_cache_ring_rss(adapter
))
3501 * ixgbe_alloc_queues - Allocate memory for all rings
3502 * @adapter: board private structure to initialize
3504 * We allocate one ring per queue at run-time since we don't know the
3505 * number of queues at compile-time. The polling_netdev array is
3506 * intended for Multiqueue, but should work fine with a single queue.
3508 static int ixgbe_alloc_queues(struct ixgbe_adapter
*adapter
)
3512 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
3513 sizeof(struct ixgbe_ring
), GFP_KERNEL
);
3514 if (!adapter
->tx_ring
)
3515 goto err_tx_ring_allocation
;
3517 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
3518 sizeof(struct ixgbe_ring
), GFP_KERNEL
);
3519 if (!adapter
->rx_ring
)
3520 goto err_rx_ring_allocation
;
3522 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3523 adapter
->tx_ring
[i
].count
= adapter
->tx_ring_count
;
3524 adapter
->tx_ring
[i
].queue_index
= i
;
3527 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3528 adapter
->rx_ring
[i
].count
= adapter
->rx_ring_count
;
3529 adapter
->rx_ring
[i
].queue_index
= i
;
3532 ixgbe_cache_ring_register(adapter
);
3536 err_rx_ring_allocation
:
3537 kfree(adapter
->tx_ring
);
3538 err_tx_ring_allocation
:
3543 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
3544 * @adapter: board private structure to initialize
3546 * Attempt to configure the interrupts using the best available
3547 * capabilities of the hardware and the kernel.
3549 static int ixgbe_set_interrupt_capability(struct ixgbe_adapter
*adapter
)
3551 struct ixgbe_hw
*hw
= &adapter
->hw
;
3553 int vector
, v_budget
;
3556 * It's easy to be greedy for MSI-X vectors, but it really
3557 * doesn't do us much good if we have a lot more vectors
3558 * than CPU's. So let's be conservative and only ask for
3559 * (roughly) twice the number of vectors as there are CPU's.
3561 v_budget
= min(adapter
->num_rx_queues
+ adapter
->num_tx_queues
,
3562 (int)(num_online_cpus() * 2)) + NON_Q_VECTORS
;
3565 * At the same time, hardware can only support a maximum of
3566 * hw.mac->max_msix_vectors vectors. With features
3567 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
3568 * descriptor queues supported by our device. Thus, we cap it off in
3569 * those rare cases where the cpu count also exceeds our vector limit.
3571 v_budget
= min(v_budget
, (int)hw
->mac
.max_msix_vectors
);
3573 /* A failure in MSI-X entry allocation isn't fatal, but it does
3574 * mean we disable MSI-X capabilities of the adapter. */
3575 adapter
->msix_entries
= kcalloc(v_budget
,
3576 sizeof(struct msix_entry
), GFP_KERNEL
);
3577 if (adapter
->msix_entries
) {
3578 for (vector
= 0; vector
< v_budget
; vector
++)
3579 adapter
->msix_entries
[vector
].entry
= vector
;
3581 ixgbe_acquire_msix_vectors(adapter
, v_budget
);
3583 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
3587 adapter
->flags
&= ~IXGBE_FLAG_DCB_ENABLED
;
3588 adapter
->flags
&= ~IXGBE_FLAG_RSS_ENABLED
;
3589 adapter
->flags
&= ~IXGBE_FLAG_FDIR_HASH_CAPABLE
;
3590 adapter
->flags
&= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
3591 adapter
->atr_sample_rate
= 0;
3592 ixgbe_set_num_queues(adapter
);
3594 err
= pci_enable_msi(adapter
->pdev
);
3596 adapter
->flags
|= IXGBE_FLAG_MSI_ENABLED
;
3598 DPRINTK(HW
, DEBUG
, "Unable to allocate MSI interrupt, "
3599 "falling back to legacy. Error: %d\n", err
);
3609 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
3610 * @adapter: board private structure to initialize
3612 * We allocate one q_vector per queue interrupt. If allocation fails we
3615 static int ixgbe_alloc_q_vectors(struct ixgbe_adapter
*adapter
)
3617 int q_idx
, num_q_vectors
;
3618 struct ixgbe_q_vector
*q_vector
;
3620 int (*poll
)(struct napi_struct
*, int);
3622 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
3623 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
3624 napi_vectors
= adapter
->num_rx_queues
;
3625 poll
= &ixgbe_clean_rxtx_many
;
3632 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
3633 q_vector
= kzalloc(sizeof(struct ixgbe_q_vector
), GFP_KERNEL
);
3636 q_vector
->adapter
= adapter
;
3637 if (q_vector
->txr_count
&& !q_vector
->rxr_count
)
3638 q_vector
->eitr
= adapter
->tx_eitr_param
;
3640 q_vector
->eitr
= adapter
->rx_eitr_param
;
3641 q_vector
->v_idx
= q_idx
;
3642 netif_napi_add(adapter
->netdev
, &q_vector
->napi
, (*poll
), 64);
3643 adapter
->q_vector
[q_idx
] = q_vector
;
3651 q_vector
= adapter
->q_vector
[q_idx
];
3652 netif_napi_del(&q_vector
->napi
);
3654 adapter
->q_vector
[q_idx
] = NULL
;
3660 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
3661 * @adapter: board private structure to initialize
3663 * This function frees the memory allocated to the q_vectors. In addition if
3664 * NAPI is enabled it will delete any references to the NAPI struct prior
3665 * to freeing the q_vector.
3667 static void ixgbe_free_q_vectors(struct ixgbe_adapter
*adapter
)
3669 int q_idx
, num_q_vectors
;
3671 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
3672 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
3676 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
3677 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
3678 adapter
->q_vector
[q_idx
] = NULL
;
3679 netif_napi_del(&q_vector
->napi
);
3684 static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter
*adapter
)
3686 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
3687 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
3688 pci_disable_msix(adapter
->pdev
);
3689 kfree(adapter
->msix_entries
);
3690 adapter
->msix_entries
= NULL
;
3691 } else if (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
) {
3692 adapter
->flags
&= ~IXGBE_FLAG_MSI_ENABLED
;
3693 pci_disable_msi(adapter
->pdev
);
3699 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
3700 * @adapter: board private structure to initialize
3702 * We determine which interrupt scheme to use based on...
3703 * - Kernel support (MSI, MSI-X)
3704 * - which can be user-defined (via MODULE_PARAM)
3705 * - Hardware queue count (num_*_queues)
3706 * - defined by miscellaneous hardware support/features (RSS, etc.)
3708 int ixgbe_init_interrupt_scheme(struct ixgbe_adapter
*adapter
)
3712 /* Number of supported queues */
3713 ixgbe_set_num_queues(adapter
);
3715 err
= ixgbe_set_interrupt_capability(adapter
);
3717 DPRINTK(PROBE
, ERR
, "Unable to setup interrupt capabilities\n");
3718 goto err_set_interrupt
;
3721 err
= ixgbe_alloc_q_vectors(adapter
);
3723 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queue "
3725 goto err_alloc_q_vectors
;
3728 err
= ixgbe_alloc_queues(adapter
);
3730 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
3731 goto err_alloc_queues
;
3734 DPRINTK(DRV
, INFO
, "Multiqueue %s: Rx Queue count = %u, "
3735 "Tx Queue count = %u\n",
3736 (adapter
->num_rx_queues
> 1) ? "Enabled" :
3737 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
3739 set_bit(__IXGBE_DOWN
, &adapter
->state
);
3744 ixgbe_free_q_vectors(adapter
);
3745 err_alloc_q_vectors
:
3746 ixgbe_reset_interrupt_capability(adapter
);
3752 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
3753 * @adapter: board private structure to clear interrupt scheme on
3755 * We go through and clear interrupt specific resources and reset the structure
3756 * to pre-load conditions
3758 void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter
*adapter
)
3760 kfree(adapter
->tx_ring
);
3761 kfree(adapter
->rx_ring
);
3762 adapter
->tx_ring
= NULL
;
3763 adapter
->rx_ring
= NULL
;
3765 ixgbe_free_q_vectors(adapter
);
3766 ixgbe_reset_interrupt_capability(adapter
);
3770 * ixgbe_sfp_timer - worker thread to find a missing module
3771 * @data: pointer to our adapter struct
3773 static void ixgbe_sfp_timer(unsigned long data
)
3775 struct ixgbe_adapter
*adapter
= (struct ixgbe_adapter
*)data
;
3778 * Do the sfp_timer outside of interrupt context due to the
3779 * delays that sfp+ detection requires
3781 schedule_work(&adapter
->sfp_task
);
3785 * ixgbe_sfp_task - worker thread to find a missing module
3786 * @work: pointer to work_struct containing our data
3788 static void ixgbe_sfp_task(struct work_struct
*work
)
3790 struct ixgbe_adapter
*adapter
= container_of(work
,
3791 struct ixgbe_adapter
,
3793 struct ixgbe_hw
*hw
= &adapter
->hw
;
3795 if ((hw
->phy
.type
== ixgbe_phy_nl
) &&
3796 (hw
->phy
.sfp_type
== ixgbe_sfp_type_not_present
)) {
3797 s32 ret
= hw
->phy
.ops
.identify_sfp(hw
);
3798 if (ret
== IXGBE_ERR_SFP_NOT_PRESENT
)
3800 ret
= hw
->phy
.ops
.reset(hw
);
3801 if (ret
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
3802 dev_err(&adapter
->pdev
->dev
, "failed to initialize "
3803 "because an unsupported SFP+ module type "
3805 "Reload the driver after installing a "
3806 "supported module.\n");
3807 unregister_netdev(adapter
->netdev
);
3809 DPRINTK(PROBE
, INFO
, "detected SFP+: %d\n",
3812 /* don't need this routine any more */
3813 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
3817 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
))
3818 mod_timer(&adapter
->sfp_timer
,
3819 round_jiffies(jiffies
+ (2 * HZ
)));
3823 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
3824 * @adapter: board private structure to initialize
3826 * ixgbe_sw_init initializes the Adapter private data structure.
3827 * Fields are initialized based on PCI device information and
3828 * OS network device settings (MTU size).
3830 static int __devinit
ixgbe_sw_init(struct ixgbe_adapter
*adapter
)
3832 struct ixgbe_hw
*hw
= &adapter
->hw
;
3833 struct pci_dev
*pdev
= adapter
->pdev
;
3835 #ifdef CONFIG_IXGBE_DCB
3837 struct tc_configuration
*tc
;
3840 /* PCI config space info */
3842 hw
->vendor_id
= pdev
->vendor
;
3843 hw
->device_id
= pdev
->device
;
3844 hw
->revision_id
= pdev
->revision
;
3845 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
3846 hw
->subsystem_device_id
= pdev
->subsystem_device
;
3848 /* Set capability flags */
3849 rss
= min(IXGBE_MAX_RSS_INDICES
, (int)num_online_cpus());
3850 adapter
->ring_feature
[RING_F_RSS
].indices
= rss
;
3851 adapter
->flags
|= IXGBE_FLAG_RSS_ENABLED
;
3852 adapter
->ring_feature
[RING_F_DCB
].indices
= IXGBE_MAX_DCB_INDICES
;
3853 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
3854 if (hw
->device_id
== IXGBE_DEV_ID_82598AT
)
3855 adapter
->flags
|= IXGBE_FLAG_FAN_FAIL_CAPABLE
;
3856 adapter
->max_msix_q_vectors
= MAX_MSIX_Q_VECTORS_82598
;
3857 } else if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
3858 adapter
->max_msix_q_vectors
= MAX_MSIX_Q_VECTORS_82599
;
3859 adapter
->flags2
|= IXGBE_FLAG2_RSC_CAPABLE
;
3860 adapter
->flags2
|= IXGBE_FLAG2_RSC_ENABLED
;
3861 adapter
->flags
|= IXGBE_FLAG_FDIR_HASH_CAPABLE
;
3862 adapter
->ring_feature
[RING_F_FDIR
].indices
=
3863 IXGBE_MAX_FDIR_INDICES
;
3864 adapter
->atr_sample_rate
= 20;
3865 adapter
->fdir_pballoc
= 0;
3867 adapter
->flags
|= IXGBE_FLAG_FCOE_CAPABLE
;
3868 adapter
->flags
&= ~IXGBE_FLAG_FCOE_ENABLED
;
3869 adapter
->ring_feature
[RING_F_FCOE
].indices
= 0;
3870 /* Default traffic class to use for FCoE */
3871 adapter
->fcoe
.tc
= IXGBE_FCOE_DEFTC
;
3872 #endif /* IXGBE_FCOE */
3875 #ifdef CONFIG_IXGBE_DCB
3876 /* Configure DCB traffic classes */
3877 for (j
= 0; j
< MAX_TRAFFIC_CLASS
; j
++) {
3878 tc
= &adapter
->dcb_cfg
.tc_config
[j
];
3879 tc
->path
[DCB_TX_CONFIG
].bwg_id
= 0;
3880 tc
->path
[DCB_TX_CONFIG
].bwg_percent
= 12 + (j
& 1);
3881 tc
->path
[DCB_RX_CONFIG
].bwg_id
= 0;
3882 tc
->path
[DCB_RX_CONFIG
].bwg_percent
= 12 + (j
& 1);
3883 tc
->dcb_pfc
= pfc_disabled
;
3885 adapter
->dcb_cfg
.bw_percentage
[DCB_TX_CONFIG
][0] = 100;
3886 adapter
->dcb_cfg
.bw_percentage
[DCB_RX_CONFIG
][0] = 100;
3887 adapter
->dcb_cfg
.rx_pba_cfg
= pba_equal
;
3888 adapter
->dcb_cfg
.pfc_mode_enable
= false;
3889 adapter
->dcb_cfg
.round_robin_enable
= false;
3890 adapter
->dcb_set_bitmap
= 0x00;
3891 ixgbe_copy_dcb_cfg(&adapter
->dcb_cfg
, &adapter
->temp_dcb_cfg
,
3892 adapter
->ring_feature
[RING_F_DCB
].indices
);
3896 /* default flow control settings */
3897 hw
->fc
.requested_mode
= ixgbe_fc_full
;
3898 hw
->fc
.current_mode
= ixgbe_fc_full
; /* init for ethtool output */
3900 adapter
->last_lfc_mode
= hw
->fc
.current_mode
;
3902 hw
->fc
.high_water
= IXGBE_DEFAULT_FCRTH
;
3903 hw
->fc
.low_water
= IXGBE_DEFAULT_FCRTL
;
3904 hw
->fc
.pause_time
= IXGBE_DEFAULT_FCPAUSE
;
3905 hw
->fc
.send_xon
= true;
3906 hw
->fc
.disable_fc_autoneg
= false;
3908 /* enable itr by default in dynamic mode */
3909 adapter
->rx_itr_setting
= 1;
3910 adapter
->rx_eitr_param
= 20000;
3911 adapter
->tx_itr_setting
= 1;
3912 adapter
->tx_eitr_param
= 10000;
3914 /* set defaults for eitr in MegaBytes */
3915 adapter
->eitr_low
= 10;
3916 adapter
->eitr_high
= 20;
3918 /* set default ring sizes */
3919 adapter
->tx_ring_count
= IXGBE_DEFAULT_TXD
;
3920 adapter
->rx_ring_count
= IXGBE_DEFAULT_RXD
;
3922 /* initialize eeprom parameters */
3923 if (ixgbe_init_eeprom_params_generic(hw
)) {
3924 dev_err(&pdev
->dev
, "EEPROM initialization failed\n");
3928 /* enable rx csum by default */
3929 adapter
->flags
|= IXGBE_FLAG_RX_CSUM_ENABLED
;
3931 set_bit(__IXGBE_DOWN
, &adapter
->state
);
3937 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
3938 * @adapter: board private structure
3939 * @tx_ring: tx descriptor ring (for a specific queue) to setup
3941 * Return 0 on success, negative on failure
3943 int ixgbe_setup_tx_resources(struct ixgbe_adapter
*adapter
,
3944 struct ixgbe_ring
*tx_ring
)
3946 struct pci_dev
*pdev
= adapter
->pdev
;
3949 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
3950 tx_ring
->tx_buffer_info
= vmalloc(size
);
3951 if (!tx_ring
->tx_buffer_info
)
3953 memset(tx_ring
->tx_buffer_info
, 0, size
);
3955 /* round up to nearest 4K */
3956 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
3957 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
3959 tx_ring
->desc
= pci_alloc_consistent(pdev
, tx_ring
->size
,
3964 tx_ring
->next_to_use
= 0;
3965 tx_ring
->next_to_clean
= 0;
3966 tx_ring
->work_limit
= tx_ring
->count
;
3970 vfree(tx_ring
->tx_buffer_info
);
3971 tx_ring
->tx_buffer_info
= NULL
;
3972 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for the transmit "
3973 "descriptor ring\n");
3978 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
3979 * @adapter: board private structure
3981 * If this function returns with an error, then it's possible one or
3982 * more of the rings is populated (while the rest are not). It is the
3983 * callers duty to clean those orphaned rings.
3985 * Return 0 on success, negative on failure
3987 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter
*adapter
)
3991 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3992 err
= ixgbe_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
3995 DPRINTK(PROBE
, ERR
, "Allocation for Tx Queue %u failed\n", i
);
4003 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
4004 * @adapter: board private structure
4005 * @rx_ring: rx descriptor ring (for a specific queue) to setup
4007 * Returns 0 on success, negative on failure
4009 int ixgbe_setup_rx_resources(struct ixgbe_adapter
*adapter
,
4010 struct ixgbe_ring
*rx_ring
)
4012 struct pci_dev
*pdev
= adapter
->pdev
;
4015 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
4016 rx_ring
->rx_buffer_info
= vmalloc(size
);
4017 if (!rx_ring
->rx_buffer_info
) {
4019 "vmalloc allocation failed for the rx desc ring\n");
4022 memset(rx_ring
->rx_buffer_info
, 0, size
);
4024 /* Round up to nearest 4K */
4025 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
4026 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
4028 rx_ring
->desc
= pci_alloc_consistent(pdev
, rx_ring
->size
, &rx_ring
->dma
);
4030 if (!rx_ring
->desc
) {
4032 "Memory allocation failed for the rx desc ring\n");
4033 vfree(rx_ring
->rx_buffer_info
);
4037 rx_ring
->next_to_clean
= 0;
4038 rx_ring
->next_to_use
= 0;
4047 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
4048 * @adapter: board private structure
4050 * If this function returns with an error, then it's possible one or
4051 * more of the rings is populated (while the rest are not). It is the
4052 * callers duty to clean those orphaned rings.
4054 * Return 0 on success, negative on failure
4057 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter
*adapter
)
4061 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4062 err
= ixgbe_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
4065 DPRINTK(PROBE
, ERR
, "Allocation for Rx Queue %u failed\n", i
);
4073 * ixgbe_free_tx_resources - Free Tx Resources per Queue
4074 * @adapter: board private structure
4075 * @tx_ring: Tx descriptor ring for a specific queue
4077 * Free all transmit software resources
4079 void ixgbe_free_tx_resources(struct ixgbe_adapter
*adapter
,
4080 struct ixgbe_ring
*tx_ring
)
4082 struct pci_dev
*pdev
= adapter
->pdev
;
4084 ixgbe_clean_tx_ring(adapter
, tx_ring
);
4086 vfree(tx_ring
->tx_buffer_info
);
4087 tx_ring
->tx_buffer_info
= NULL
;
4089 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
4091 tx_ring
->desc
= NULL
;
4095 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
4096 * @adapter: board private structure
4098 * Free all transmit software resources
4100 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter
*adapter
)
4104 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4105 if (adapter
->tx_ring
[i
].desc
)
4106 ixgbe_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
4110 * ixgbe_free_rx_resources - Free Rx Resources
4111 * @adapter: board private structure
4112 * @rx_ring: ring to clean the resources from
4114 * Free all receive software resources
4116 void ixgbe_free_rx_resources(struct ixgbe_adapter
*adapter
,
4117 struct ixgbe_ring
*rx_ring
)
4119 struct pci_dev
*pdev
= adapter
->pdev
;
4121 ixgbe_clean_rx_ring(adapter
, rx_ring
);
4123 vfree(rx_ring
->rx_buffer_info
);
4124 rx_ring
->rx_buffer_info
= NULL
;
4126 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
4128 rx_ring
->desc
= NULL
;
4132 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
4133 * @adapter: board private structure
4135 * Free all receive software resources
4137 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter
*adapter
)
4141 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4142 if (adapter
->rx_ring
[i
].desc
)
4143 ixgbe_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
4147 * ixgbe_change_mtu - Change the Maximum Transfer Unit
4148 * @netdev: network interface device structure
4149 * @new_mtu: new value for maximum frame size
4151 * Returns 0 on success, negative on failure
4153 static int ixgbe_change_mtu(struct net_device
*netdev
, int new_mtu
)
4155 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4156 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4158 /* MTU < 68 is an error and causes problems on some kernels */
4159 if ((new_mtu
< 68) || (max_frame
> IXGBE_MAX_JUMBO_FRAME_SIZE
))
4162 DPRINTK(PROBE
, INFO
, "changing MTU from %d to %d\n",
4163 netdev
->mtu
, new_mtu
);
4164 /* must set new MTU before calling down or up */
4165 netdev
->mtu
= new_mtu
;
4167 if (netif_running(netdev
))
4168 ixgbe_reinit_locked(adapter
);
4174 * ixgbe_open - Called when a network interface is made active
4175 * @netdev: network interface device structure
4177 * Returns 0 on success, negative value on failure
4179 * The open entry point is called when a network interface is made
4180 * active by the system (IFF_UP). At this point all resources needed
4181 * for transmit and receive operations are allocated, the interrupt
4182 * handler is registered with the OS, the watchdog timer is started,
4183 * and the stack is notified that the interface is ready.
4185 static int ixgbe_open(struct net_device
*netdev
)
4187 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4190 /* disallow open during test */
4191 if (test_bit(__IXGBE_TESTING
, &adapter
->state
))
4194 netif_carrier_off(netdev
);
4196 /* allocate transmit descriptors */
4197 err
= ixgbe_setup_all_tx_resources(adapter
);
4201 /* allocate receive descriptors */
4202 err
= ixgbe_setup_all_rx_resources(adapter
);
4206 ixgbe_configure(adapter
);
4208 err
= ixgbe_request_irq(adapter
);
4212 err
= ixgbe_up_complete(adapter
);
4216 netif_tx_start_all_queues(netdev
);
4221 ixgbe_release_hw_control(adapter
);
4222 ixgbe_free_irq(adapter
);
4225 ixgbe_free_all_rx_resources(adapter
);
4227 ixgbe_free_all_tx_resources(adapter
);
4228 ixgbe_reset(adapter
);
4234 * ixgbe_close - Disables a network interface
4235 * @netdev: network interface device structure
4237 * Returns 0, this is not allowed to fail
4239 * The close entry point is called when an interface is de-activated
4240 * by the OS. The hardware is still under the drivers control, but
4241 * needs to be disabled. A global MAC reset is issued to stop the
4242 * hardware, and all transmit and receive resources are freed.
4244 static int ixgbe_close(struct net_device
*netdev
)
4246 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4248 ixgbe_down(adapter
);
4249 ixgbe_free_irq(adapter
);
4251 ixgbe_free_all_tx_resources(adapter
);
4252 ixgbe_free_all_rx_resources(adapter
);
4254 ixgbe_release_hw_control(adapter
);
4260 static int ixgbe_resume(struct pci_dev
*pdev
)
4262 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4263 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4266 pci_set_power_state(pdev
, PCI_D0
);
4267 pci_restore_state(pdev
);
4269 err
= pci_enable_device_mem(pdev
);
4271 printk(KERN_ERR
"ixgbe: Cannot enable PCI device from "
4275 pci_set_master(pdev
);
4277 pci_wake_from_d3(pdev
, false);
4279 err
= ixgbe_init_interrupt_scheme(adapter
);
4281 printk(KERN_ERR
"ixgbe: Cannot initialize interrupts for "
4286 ixgbe_reset(adapter
);
4288 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
4290 if (netif_running(netdev
)) {
4291 err
= ixgbe_open(adapter
->netdev
);
4296 netif_device_attach(netdev
);
4300 #endif /* CONFIG_PM */
4302 static int __ixgbe_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
4304 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4305 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4306 struct ixgbe_hw
*hw
= &adapter
->hw
;
4308 u32 wufc
= adapter
->wol
;
4313 netif_device_detach(netdev
);
4315 if (netif_running(netdev
)) {
4316 ixgbe_down(adapter
);
4317 ixgbe_free_irq(adapter
);
4318 ixgbe_free_all_tx_resources(adapter
);
4319 ixgbe_free_all_rx_resources(adapter
);
4321 ixgbe_clear_interrupt_scheme(adapter
);
4324 retval
= pci_save_state(pdev
);
4330 ixgbe_set_rx_mode(netdev
);
4332 /* turn on all-multi mode if wake on multicast is enabled */
4333 if (wufc
& IXGBE_WUFC_MC
) {
4334 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
4335 fctrl
|= IXGBE_FCTRL_MPE
;
4336 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
4339 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
4340 ctrl
|= IXGBE_CTRL_GIO_DIS
;
4341 IXGBE_WRITE_REG(hw
, IXGBE_CTRL
, ctrl
);
4343 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, wufc
);
4345 IXGBE_WRITE_REG(hw
, IXGBE_WUC
, 0);
4346 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, 0);
4349 if (wufc
&& hw
->mac
.type
== ixgbe_mac_82599EB
)
4350 pci_wake_from_d3(pdev
, true);
4352 pci_wake_from_d3(pdev
, false);
4354 *enable_wake
= !!wufc
;
4356 ixgbe_release_hw_control(adapter
);
4358 pci_disable_device(pdev
);
4364 static int ixgbe_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4369 retval
= __ixgbe_shutdown(pdev
, &wake
);
4374 pci_prepare_to_sleep(pdev
);
4376 pci_wake_from_d3(pdev
, false);
4377 pci_set_power_state(pdev
, PCI_D3hot
);
4382 #endif /* CONFIG_PM */
4384 static void ixgbe_shutdown(struct pci_dev
*pdev
)
4388 __ixgbe_shutdown(pdev
, &wake
);
4390 if (system_state
== SYSTEM_POWER_OFF
) {
4391 pci_wake_from_d3(pdev
, wake
);
4392 pci_set_power_state(pdev
, PCI_D3hot
);
4397 * ixgbe_update_stats - Update the board statistics counters.
4398 * @adapter: board private structure
4400 void ixgbe_update_stats(struct ixgbe_adapter
*adapter
)
4402 struct ixgbe_hw
*hw
= &adapter
->hw
;
4404 u32 i
, missed_rx
= 0, mpc
, bprc
, lxon
, lxoff
, xon_off_tot
;
4406 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4408 for (i
= 0; i
< 16; i
++)
4409 adapter
->hw_rx_no_dma_resources
+=
4410 IXGBE_READ_REG(hw
, IXGBE_QPRDC(i
));
4411 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4412 rsc_count
+= adapter
->rx_ring
[i
].rsc_count
;
4413 adapter
->rsc_count
= rsc_count
;
4416 adapter
->stats
.crcerrs
+= IXGBE_READ_REG(hw
, IXGBE_CRCERRS
);
4417 for (i
= 0; i
< 8; i
++) {
4418 /* for packet buffers not used, the register should read 0 */
4419 mpc
= IXGBE_READ_REG(hw
, IXGBE_MPC(i
));
4421 adapter
->stats
.mpc
[i
] += mpc
;
4422 total_mpc
+= adapter
->stats
.mpc
[i
];
4423 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4424 adapter
->stats
.rnbc
[i
] += IXGBE_READ_REG(hw
, IXGBE_RNBC(i
));
4425 adapter
->stats
.qptc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPTC(i
));
4426 adapter
->stats
.qbtc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBTC(i
));
4427 adapter
->stats
.qprc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPRC(i
));
4428 adapter
->stats
.qbrc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBRC(i
));
4429 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4430 adapter
->stats
.pxonrxc
[i
] += IXGBE_READ_REG(hw
,
4431 IXGBE_PXONRXCNT(i
));
4432 adapter
->stats
.pxoffrxc
[i
] += IXGBE_READ_REG(hw
,
4433 IXGBE_PXOFFRXCNT(i
));
4434 adapter
->stats
.qprdc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPRDC(i
));
4436 adapter
->stats
.pxonrxc
[i
] += IXGBE_READ_REG(hw
,
4438 adapter
->stats
.pxoffrxc
[i
] += IXGBE_READ_REG(hw
,
4441 adapter
->stats
.pxontxc
[i
] += IXGBE_READ_REG(hw
,
4443 adapter
->stats
.pxofftxc
[i
] += IXGBE_READ_REG(hw
,
4446 adapter
->stats
.gprc
+= IXGBE_READ_REG(hw
, IXGBE_GPRC
);
4447 /* work around hardware counting issue */
4448 adapter
->stats
.gprc
-= missed_rx
;
4450 /* 82598 hardware only has a 32 bit counter in the high register */
4451 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4452 adapter
->stats
.gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCL
);
4453 IXGBE_READ_REG(hw
, IXGBE_GORCH
); /* to clear */
4454 adapter
->stats
.gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCL
);
4455 IXGBE_READ_REG(hw
, IXGBE_GOTCH
); /* to clear */
4456 adapter
->stats
.tor
+= IXGBE_READ_REG(hw
, IXGBE_TORL
);
4457 IXGBE_READ_REG(hw
, IXGBE_TORH
); /* to clear */
4458 adapter
->stats
.lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXCNT
);
4459 adapter
->stats
.lxoffrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXCNT
);
4460 adapter
->stats
.fdirmatch
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMATCH
);
4461 adapter
->stats
.fdirmiss
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMISS
);
4463 adapter
->stats
.fccrc
+= IXGBE_READ_REG(hw
, IXGBE_FCCRC
);
4464 adapter
->stats
.fcoerpdc
+= IXGBE_READ_REG(hw
, IXGBE_FCOERPDC
);
4465 adapter
->stats
.fcoeprc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPRC
);
4466 adapter
->stats
.fcoeptc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPTC
);
4467 adapter
->stats
.fcoedwrc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWRC
);
4468 adapter
->stats
.fcoedwtc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWTC
);
4469 #endif /* IXGBE_FCOE */
4471 adapter
->stats
.lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXC
);
4472 adapter
->stats
.lxoffrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXC
);
4473 adapter
->stats
.gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCH
);
4474 adapter
->stats
.gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCH
);
4475 adapter
->stats
.tor
+= IXGBE_READ_REG(hw
, IXGBE_TORH
);
4477 bprc
= IXGBE_READ_REG(hw
, IXGBE_BPRC
);
4478 adapter
->stats
.bprc
+= bprc
;
4479 adapter
->stats
.mprc
+= IXGBE_READ_REG(hw
, IXGBE_MPRC
);
4480 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4481 adapter
->stats
.mprc
-= bprc
;
4482 adapter
->stats
.roc
+= IXGBE_READ_REG(hw
, IXGBE_ROC
);
4483 adapter
->stats
.prc64
+= IXGBE_READ_REG(hw
, IXGBE_PRC64
);
4484 adapter
->stats
.prc127
+= IXGBE_READ_REG(hw
, IXGBE_PRC127
);
4485 adapter
->stats
.prc255
+= IXGBE_READ_REG(hw
, IXGBE_PRC255
);
4486 adapter
->stats
.prc511
+= IXGBE_READ_REG(hw
, IXGBE_PRC511
);
4487 adapter
->stats
.prc1023
+= IXGBE_READ_REG(hw
, IXGBE_PRC1023
);
4488 adapter
->stats
.prc1522
+= IXGBE_READ_REG(hw
, IXGBE_PRC1522
);
4489 adapter
->stats
.rlec
+= IXGBE_READ_REG(hw
, IXGBE_RLEC
);
4490 lxon
= IXGBE_READ_REG(hw
, IXGBE_LXONTXC
);
4491 adapter
->stats
.lxontxc
+= lxon
;
4492 lxoff
= IXGBE_READ_REG(hw
, IXGBE_LXOFFTXC
);
4493 adapter
->stats
.lxofftxc
+= lxoff
;
4494 adapter
->stats
.ruc
+= IXGBE_READ_REG(hw
, IXGBE_RUC
);
4495 adapter
->stats
.gptc
+= IXGBE_READ_REG(hw
, IXGBE_GPTC
);
4496 adapter
->stats
.mptc
+= IXGBE_READ_REG(hw
, IXGBE_MPTC
);
4498 * 82598 errata - tx of flow control packets is included in tx counters
4500 xon_off_tot
= lxon
+ lxoff
;
4501 adapter
->stats
.gptc
-= xon_off_tot
;
4502 adapter
->stats
.mptc
-= xon_off_tot
;
4503 adapter
->stats
.gotc
-= (xon_off_tot
* (ETH_ZLEN
+ ETH_FCS_LEN
));
4504 adapter
->stats
.ruc
+= IXGBE_READ_REG(hw
, IXGBE_RUC
);
4505 adapter
->stats
.rfc
+= IXGBE_READ_REG(hw
, IXGBE_RFC
);
4506 adapter
->stats
.rjc
+= IXGBE_READ_REG(hw
, IXGBE_RJC
);
4507 adapter
->stats
.tpr
+= IXGBE_READ_REG(hw
, IXGBE_TPR
);
4508 adapter
->stats
.ptc64
+= IXGBE_READ_REG(hw
, IXGBE_PTC64
);
4509 adapter
->stats
.ptc64
-= xon_off_tot
;
4510 adapter
->stats
.ptc127
+= IXGBE_READ_REG(hw
, IXGBE_PTC127
);
4511 adapter
->stats
.ptc255
+= IXGBE_READ_REG(hw
, IXGBE_PTC255
);
4512 adapter
->stats
.ptc511
+= IXGBE_READ_REG(hw
, IXGBE_PTC511
);
4513 adapter
->stats
.ptc1023
+= IXGBE_READ_REG(hw
, IXGBE_PTC1023
);
4514 adapter
->stats
.ptc1522
+= IXGBE_READ_REG(hw
, IXGBE_PTC1522
);
4515 adapter
->stats
.bptc
+= IXGBE_READ_REG(hw
, IXGBE_BPTC
);
4517 /* Fill out the OS statistics structure */
4518 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
4521 adapter
->net_stats
.rx_errors
= adapter
->stats
.crcerrs
+
4522 adapter
->stats
.rlec
;
4523 adapter
->net_stats
.rx_dropped
= 0;
4524 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
4525 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4526 adapter
->net_stats
.rx_missed_errors
= total_mpc
;
4530 * ixgbe_watchdog - Timer Call-back
4531 * @data: pointer to adapter cast into an unsigned long
4533 static void ixgbe_watchdog(unsigned long data
)
4535 struct ixgbe_adapter
*adapter
= (struct ixgbe_adapter
*)data
;
4536 struct ixgbe_hw
*hw
= &adapter
->hw
;
4541 * Do the watchdog outside of interrupt context due to the lovely
4542 * delays that some of the newer hardware requires
4545 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
4546 goto watchdog_short_circuit
;
4548 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
4550 * for legacy and MSI interrupts don't set any bits
4551 * that are enabled for EIAM, because this operation
4552 * would set *both* EIMS and EICS for any bit in EIAM
4554 IXGBE_WRITE_REG(hw
, IXGBE_EICS
,
4555 (IXGBE_EICS_TCP_TIMER
| IXGBE_EICS_OTHER
));
4556 goto watchdog_reschedule
;
4559 /* get one bit for every active tx/rx interrupt vector */
4560 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
4561 struct ixgbe_q_vector
*qv
= adapter
->q_vector
[i
];
4562 if (qv
->rxr_count
|| qv
->txr_count
)
4563 eics
|= ((u64
)1 << i
);
4566 /* Cause software interrupt to ensure rx rings are cleaned */
4567 ixgbe_irq_rearm_queues(adapter
, eics
);
4569 watchdog_reschedule
:
4570 /* Reset the timer */
4571 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
4573 watchdog_short_circuit
:
4574 schedule_work(&adapter
->watchdog_task
);
4578 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
4579 * @work: pointer to work_struct containing our data
4581 static void ixgbe_multispeed_fiber_task(struct work_struct
*work
)
4583 struct ixgbe_adapter
*adapter
= container_of(work
,
4584 struct ixgbe_adapter
,
4585 multispeed_fiber_task
);
4586 struct ixgbe_hw
*hw
= &adapter
->hw
;
4590 adapter
->flags
|= IXGBE_FLAG_IN_SFP_LINK_TASK
;
4591 autoneg
= hw
->phy
.autoneg_advertised
;
4592 if ((!autoneg
) && (hw
->mac
.ops
.get_link_capabilities
))
4593 hw
->mac
.ops
.get_link_capabilities(hw
, &autoneg
, &negotiation
);
4594 if (hw
->mac
.ops
.setup_link
)
4595 hw
->mac
.ops
.setup_link(hw
, autoneg
, negotiation
, true);
4596 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
4597 adapter
->flags
&= ~IXGBE_FLAG_IN_SFP_LINK_TASK
;
4601 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
4602 * @work: pointer to work_struct containing our data
4604 static void ixgbe_sfp_config_module_task(struct work_struct
*work
)
4606 struct ixgbe_adapter
*adapter
= container_of(work
,
4607 struct ixgbe_adapter
,
4608 sfp_config_module_task
);
4609 struct ixgbe_hw
*hw
= &adapter
->hw
;
4612 adapter
->flags
|= IXGBE_FLAG_IN_SFP_MOD_TASK
;
4614 /* Time for electrical oscillations to settle down */
4616 err
= hw
->phy
.ops
.identify_sfp(hw
);
4618 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
4619 dev_err(&adapter
->pdev
->dev
, "failed to initialize because "
4620 "an unsupported SFP+ module type was detected.\n"
4621 "Reload the driver after installing a supported "
4623 unregister_netdev(adapter
->netdev
);
4626 hw
->mac
.ops
.setup_sfp(hw
);
4628 if (!(adapter
->flags
& IXGBE_FLAG_IN_SFP_LINK_TASK
))
4629 /* This will also work for DA Twinax connections */
4630 schedule_work(&adapter
->multispeed_fiber_task
);
4631 adapter
->flags
&= ~IXGBE_FLAG_IN_SFP_MOD_TASK
;
4635 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
4636 * @work: pointer to work_struct containing our data
4638 static void ixgbe_fdir_reinit_task(struct work_struct
*work
)
4640 struct ixgbe_adapter
*adapter
= container_of(work
,
4641 struct ixgbe_adapter
,
4643 struct ixgbe_hw
*hw
= &adapter
->hw
;
4646 if (ixgbe_reinit_fdir_tables_82599(hw
) == 0) {
4647 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4648 set_bit(__IXGBE_FDIR_INIT_DONE
,
4649 &(adapter
->tx_ring
[i
].reinit_state
));
4651 DPRINTK(PROBE
, ERR
, "failed to finish FDIR re-initialization, "
4652 "ignored adding FDIR ATR filters \n");
4654 /* Done FDIR Re-initialization, enable transmits */
4655 netif_tx_start_all_queues(adapter
->netdev
);
4659 * ixgbe_watchdog_task - worker thread to bring link up
4660 * @work: pointer to work_struct containing our data
4662 static void ixgbe_watchdog_task(struct work_struct
*work
)
4664 struct ixgbe_adapter
*adapter
= container_of(work
,
4665 struct ixgbe_adapter
,
4667 struct net_device
*netdev
= adapter
->netdev
;
4668 struct ixgbe_hw
*hw
= &adapter
->hw
;
4669 u32 link_speed
= adapter
->link_speed
;
4670 bool link_up
= adapter
->link_up
;
4672 struct ixgbe_ring
*tx_ring
;
4673 int some_tx_pending
= 0;
4675 adapter
->flags
|= IXGBE_FLAG_IN_WATCHDOG_TASK
;
4677 if (adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
) {
4678 hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
4681 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
4682 for (i
= 0; i
< MAX_TRAFFIC_CLASS
; i
++)
4683 hw
->mac
.ops
.fc_enable(hw
, i
);
4685 hw
->mac
.ops
.fc_enable(hw
, 0);
4688 hw
->mac
.ops
.fc_enable(hw
, 0);
4693 time_after(jiffies
, (adapter
->link_check_timeout
+
4694 IXGBE_TRY_LINK_TIMEOUT
))) {
4695 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_UPDATE
;
4696 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMC_LSC
);
4698 adapter
->link_up
= link_up
;
4699 adapter
->link_speed
= link_speed
;
4703 if (!netif_carrier_ok(netdev
)) {
4704 bool flow_rx
, flow_tx
;
4706 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4707 u32 mflcn
= IXGBE_READ_REG(hw
, IXGBE_MFLCN
);
4708 u32 fccfg
= IXGBE_READ_REG(hw
, IXGBE_FCCFG
);
4709 flow_rx
= !!(mflcn
& IXGBE_MFLCN_RFCE
);
4710 flow_tx
= !!(fccfg
& IXGBE_FCCFG_TFCE_802_3X
);
4712 u32 frctl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
4713 u32 rmcs
= IXGBE_READ_REG(hw
, IXGBE_RMCS
);
4714 flow_rx
= !!(frctl
& IXGBE_FCTRL_RFCE
);
4715 flow_tx
= !!(rmcs
& IXGBE_RMCS_TFCE_802_3X
);
4718 printk(KERN_INFO
"ixgbe: %s NIC Link is Up %s, "
4719 "Flow Control: %s\n",
4721 (link_speed
== IXGBE_LINK_SPEED_10GB_FULL
?
4723 (link_speed
== IXGBE_LINK_SPEED_1GB_FULL
?
4724 "1 Gbps" : "unknown speed")),
4725 ((flow_rx
&& flow_tx
) ? "RX/TX" :
4727 (flow_tx
? "TX" : "None"))));
4729 netif_carrier_on(netdev
);
4731 /* Force detection of hung controller */
4732 adapter
->detect_tx_hung
= true;
4735 adapter
->link_up
= false;
4736 adapter
->link_speed
= 0;
4737 if (netif_carrier_ok(netdev
)) {
4738 printk(KERN_INFO
"ixgbe: %s NIC Link is Down\n",
4740 netif_carrier_off(netdev
);
4744 if (!netif_carrier_ok(netdev
)) {
4745 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
4746 tx_ring
= &adapter
->tx_ring
[i
];
4747 if (tx_ring
->next_to_use
!= tx_ring
->next_to_clean
) {
4748 some_tx_pending
= 1;
4753 if (some_tx_pending
) {
4754 /* We've lost link, so the controller stops DMA,
4755 * but we've got queued Tx work that's never going
4756 * to get done, so reset controller to flush Tx.
4757 * (Do the reset outside of interrupt context).
4759 schedule_work(&adapter
->reset_task
);
4763 ixgbe_update_stats(adapter
);
4764 adapter
->flags
&= ~IXGBE_FLAG_IN_WATCHDOG_TASK
;
4767 static int ixgbe_tso(struct ixgbe_adapter
*adapter
,
4768 struct ixgbe_ring
*tx_ring
, struct sk_buff
*skb
,
4769 u32 tx_flags
, u8
*hdr_len
)
4771 struct ixgbe_adv_tx_context_desc
*context_desc
;
4774 struct ixgbe_tx_buffer
*tx_buffer_info
;
4775 u32 vlan_macip_lens
= 0, type_tucmd_mlhl
;
4776 u32 mss_l4len_idx
, l4len
;
4778 if (skb_is_gso(skb
)) {
4779 if (skb_header_cloned(skb
)) {
4780 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
4784 l4len
= tcp_hdrlen(skb
);
4787 if (skb
->protocol
== htons(ETH_P_IP
)) {
4788 struct iphdr
*iph
= ip_hdr(skb
);
4791 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
4795 adapter
->hw_tso_ctxt
++;
4796 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
4797 ipv6_hdr(skb
)->payload_len
= 0;
4798 tcp_hdr(skb
)->check
=
4799 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
4800 &ipv6_hdr(skb
)->daddr
,
4802 adapter
->hw_tso6_ctxt
++;
4805 i
= tx_ring
->next_to_use
;
4807 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
4808 context_desc
= IXGBE_TX_CTXTDESC_ADV(*tx_ring
, i
);
4810 /* VLAN MACLEN IPLEN */
4811 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
4813 (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
);
4814 vlan_macip_lens
|= ((skb_network_offset(skb
)) <<
4815 IXGBE_ADVTXD_MACLEN_SHIFT
);
4816 *hdr_len
+= skb_network_offset(skb
);
4818 (skb_transport_header(skb
) - skb_network_header(skb
));
4820 (skb_transport_header(skb
) - skb_network_header(skb
));
4821 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
4822 context_desc
->seqnum_seed
= 0;
4824 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
4825 type_tucmd_mlhl
= (IXGBE_TXD_CMD_DEXT
|
4826 IXGBE_ADVTXD_DTYP_CTXT
);
4828 if (skb
->protocol
== htons(ETH_P_IP
))
4829 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_IPV4
;
4830 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
4831 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd_mlhl
);
4835 (skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
);
4836 mss_l4len_idx
|= (l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
);
4837 /* use index 1 for TSO */
4838 mss_l4len_idx
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
4839 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
4841 tx_buffer_info
->time_stamp
= jiffies
;
4842 tx_buffer_info
->next_to_watch
= i
;
4845 if (i
== tx_ring
->count
)
4847 tx_ring
->next_to_use
= i
;
4854 static bool ixgbe_tx_csum(struct ixgbe_adapter
*adapter
,
4855 struct ixgbe_ring
*tx_ring
,
4856 struct sk_buff
*skb
, u32 tx_flags
)
4858 struct ixgbe_adv_tx_context_desc
*context_desc
;
4860 struct ixgbe_tx_buffer
*tx_buffer_info
;
4861 u32 vlan_macip_lens
= 0, type_tucmd_mlhl
= 0;
4863 if (skb
->ip_summed
== CHECKSUM_PARTIAL
||
4864 (tx_flags
& IXGBE_TX_FLAGS_VLAN
)) {
4865 i
= tx_ring
->next_to_use
;
4866 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
4867 context_desc
= IXGBE_TX_CTXTDESC_ADV(*tx_ring
, i
);
4869 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
4871 (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
);
4872 vlan_macip_lens
|= (skb_network_offset(skb
) <<
4873 IXGBE_ADVTXD_MACLEN_SHIFT
);
4874 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
4875 vlan_macip_lens
|= (skb_transport_header(skb
) -
4876 skb_network_header(skb
));
4878 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
4879 context_desc
->seqnum_seed
= 0;
4881 type_tucmd_mlhl
|= (IXGBE_TXD_CMD_DEXT
|
4882 IXGBE_ADVTXD_DTYP_CTXT
);
4884 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
4885 switch (skb
->protocol
) {
4886 case cpu_to_be16(ETH_P_IP
):
4887 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_IPV4
;
4888 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
4890 IXGBE_ADVTXD_TUCMD_L4T_TCP
;
4891 else if (ip_hdr(skb
)->protocol
== IPPROTO_SCTP
)
4893 IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
4895 case cpu_to_be16(ETH_P_IPV6
):
4896 /* XXX what about other V6 headers?? */
4897 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
4899 IXGBE_ADVTXD_TUCMD_L4T_TCP
;
4900 else if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_SCTP
)
4902 IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
4905 if (unlikely(net_ratelimit())) {
4906 DPRINTK(PROBE
, WARNING
,
4907 "partial checksum but proto=%x!\n",
4914 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd_mlhl
);
4915 /* use index zero for tx checksum offload */
4916 context_desc
->mss_l4len_idx
= 0;
4918 tx_buffer_info
->time_stamp
= jiffies
;
4919 tx_buffer_info
->next_to_watch
= i
;
4921 adapter
->hw_csum_tx_good
++;
4923 if (i
== tx_ring
->count
)
4925 tx_ring
->next_to_use
= i
;
4933 static int ixgbe_tx_map(struct ixgbe_adapter
*adapter
,
4934 struct ixgbe_ring
*tx_ring
,
4935 struct sk_buff
*skb
, u32 tx_flags
,
4938 struct ixgbe_tx_buffer
*tx_buffer_info
;
4940 unsigned int total
= skb
->len
;
4941 unsigned int offset
= 0, size
, count
= 0, i
;
4942 unsigned int nr_frags
= skb_shinfo(skb
)->nr_frags
;
4946 i
= tx_ring
->next_to_use
;
4948 if (skb_dma_map(&adapter
->pdev
->dev
, skb
, DMA_TO_DEVICE
)) {
4949 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
4953 map
= skb_shinfo(skb
)->dma_maps
;
4955 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
)
4956 /* excluding fcoe_crc_eof for FCoE */
4957 total
-= sizeof(struct fcoe_crc_eof
);
4959 len
= min(skb_headlen(skb
), total
);
4961 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
4962 size
= min(len
, (uint
)IXGBE_MAX_DATA_PER_TXD
);
4964 tx_buffer_info
->length
= size
;
4965 tx_buffer_info
->dma
= skb_shinfo(skb
)->dma_head
+ offset
;
4966 tx_buffer_info
->time_stamp
= jiffies
;
4967 tx_buffer_info
->next_to_watch
= i
;
4976 if (i
== tx_ring
->count
)
4981 for (f
= 0; f
< nr_frags
; f
++) {
4982 struct skb_frag_struct
*frag
;
4984 frag
= &skb_shinfo(skb
)->frags
[f
];
4985 len
= min((unsigned int)frag
->size
, total
);
4990 if (i
== tx_ring
->count
)
4993 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
4994 size
= min(len
, (uint
)IXGBE_MAX_DATA_PER_TXD
);
4996 tx_buffer_info
->length
= size
;
4997 tx_buffer_info
->dma
= map
[f
] + offset
;
4998 tx_buffer_info
->time_stamp
= jiffies
;
4999 tx_buffer_info
->next_to_watch
= i
;
5010 tx_ring
->tx_buffer_info
[i
].skb
= skb
;
5011 tx_ring
->tx_buffer_info
[first
].next_to_watch
= i
;
5016 static void ixgbe_tx_queue(struct ixgbe_adapter
*adapter
,
5017 struct ixgbe_ring
*tx_ring
,
5018 int tx_flags
, int count
, u32 paylen
, u8 hdr_len
)
5020 union ixgbe_adv_tx_desc
*tx_desc
= NULL
;
5021 struct ixgbe_tx_buffer
*tx_buffer_info
;
5022 u32 olinfo_status
= 0, cmd_type_len
= 0;
5024 u32 txd_cmd
= IXGBE_TXD_CMD_EOP
| IXGBE_TXD_CMD_RS
| IXGBE_TXD_CMD_IFCS
;
5026 cmd_type_len
|= IXGBE_ADVTXD_DTYP_DATA
;
5028 cmd_type_len
|= IXGBE_ADVTXD_DCMD_IFCS
| IXGBE_ADVTXD_DCMD_DEXT
;
5030 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
5031 cmd_type_len
|= IXGBE_ADVTXD_DCMD_VLE
;
5033 if (tx_flags
& IXGBE_TX_FLAGS_TSO
) {
5034 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
5036 olinfo_status
|= IXGBE_TXD_POPTS_TXSM
<<
5037 IXGBE_ADVTXD_POPTS_SHIFT
;
5039 /* use index 1 context for tso */
5040 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
5041 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
5042 olinfo_status
|= IXGBE_TXD_POPTS_IXSM
<<
5043 IXGBE_ADVTXD_POPTS_SHIFT
;
5045 } else if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
5046 olinfo_status
|= IXGBE_TXD_POPTS_TXSM
<<
5047 IXGBE_ADVTXD_POPTS_SHIFT
;
5049 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
) {
5050 olinfo_status
|= IXGBE_ADVTXD_CC
;
5051 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
5052 if (tx_flags
& IXGBE_TX_FLAGS_FSO
)
5053 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
5056 olinfo_status
|= ((paylen
- hdr_len
) << IXGBE_ADVTXD_PAYLEN_SHIFT
);
5058 i
= tx_ring
->next_to_use
;
5060 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5061 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, i
);
5062 tx_desc
->read
.buffer_addr
= cpu_to_le64(tx_buffer_info
->dma
);
5063 tx_desc
->read
.cmd_type_len
=
5064 cpu_to_le32(cmd_type_len
| tx_buffer_info
->length
);
5065 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
5067 if (i
== tx_ring
->count
)
5071 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(txd_cmd
);
5074 * Force memory writes to complete before letting h/w
5075 * know there are new descriptors to fetch. (Only
5076 * applicable for weak-ordered memory model archs,
5081 tx_ring
->next_to_use
= i
;
5082 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
5085 static void ixgbe_atr(struct ixgbe_adapter
*adapter
, struct sk_buff
*skb
,
5086 int queue
, u32 tx_flags
)
5088 /* Right now, we support IPv4 only */
5089 struct ixgbe_atr_input atr_input
;
5092 struct iphdr
*iph
= ip_hdr(skb
);
5093 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
5094 u16 vlan_id
, src_port
, dst_port
, flex_bytes
;
5095 u32 src_ipv4_addr
, dst_ipv4_addr
;
5098 /* check if we're UDP or TCP */
5099 if (iph
->protocol
== IPPROTO_TCP
) {
5101 src_port
= th
->source
;
5102 dst_port
= th
->dest
;
5103 l4type
|= IXGBE_ATR_L4TYPE_TCP
;
5104 /* l4type IPv4 type is 0, no need to assign */
5105 } else if(iph
->protocol
== IPPROTO_UDP
) {
5107 src_port
= uh
->source
;
5108 dst_port
= uh
->dest
;
5109 l4type
|= IXGBE_ATR_L4TYPE_UDP
;
5110 /* l4type IPv4 type is 0, no need to assign */
5112 /* Unsupported L4 header, just bail here */
5116 memset(&atr_input
, 0, sizeof(struct ixgbe_atr_input
));
5118 vlan_id
= (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
) >>
5119 IXGBE_TX_FLAGS_VLAN_SHIFT
;
5120 src_ipv4_addr
= iph
->saddr
;
5121 dst_ipv4_addr
= iph
->daddr
;
5122 flex_bytes
= eth
->h_proto
;
5124 ixgbe_atr_set_vlan_id_82599(&atr_input
, vlan_id
);
5125 ixgbe_atr_set_src_port_82599(&atr_input
, dst_port
);
5126 ixgbe_atr_set_dst_port_82599(&atr_input
, src_port
);
5127 ixgbe_atr_set_flex_byte_82599(&atr_input
, flex_bytes
);
5128 ixgbe_atr_set_l4type_82599(&atr_input
, l4type
);
5129 /* src and dst are inverted, think how the receiver sees them */
5130 ixgbe_atr_set_src_ipv4_82599(&atr_input
, dst_ipv4_addr
);
5131 ixgbe_atr_set_dst_ipv4_82599(&atr_input
, src_ipv4_addr
);
5133 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
5134 ixgbe_fdir_add_signature_filter_82599(&adapter
->hw
, &atr_input
, queue
);
5137 static int __ixgbe_maybe_stop_tx(struct net_device
*netdev
,
5138 struct ixgbe_ring
*tx_ring
, int size
)
5140 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5142 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
5143 /* Herbert's original patch had:
5144 * smp_mb__after_netif_stop_queue();
5145 * but since that doesn't exist yet, just open code it. */
5148 /* We need to check again in a case another CPU has just
5149 * made room available. */
5150 if (likely(IXGBE_DESC_UNUSED(tx_ring
) < size
))
5153 /* A reprieve! - use start_queue because it doesn't call schedule */
5154 netif_start_subqueue(netdev
, tx_ring
->queue_index
);
5155 ++adapter
->restart_queue
;
5159 static int ixgbe_maybe_stop_tx(struct net_device
*netdev
,
5160 struct ixgbe_ring
*tx_ring
, int size
)
5162 if (likely(IXGBE_DESC_UNUSED(tx_ring
) >= size
))
5164 return __ixgbe_maybe_stop_tx(netdev
, tx_ring
, size
);
5167 static u16
ixgbe_select_queue(struct net_device
*dev
, struct sk_buff
*skb
)
5169 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
5171 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
)
5172 return smp_processor_id();
5174 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)
5175 return (skb
->vlan_tci
& IXGBE_TX_FLAGS_VLAN_PRIO_MASK
) >> 13;
5177 return skb_tx_hash(dev
, skb
);
5180 static netdev_tx_t
ixgbe_xmit_frame(struct sk_buff
*skb
,
5181 struct net_device
*netdev
)
5183 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5184 struct ixgbe_ring
*tx_ring
;
5186 unsigned int tx_flags
= 0;
5192 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
5193 tx_flags
|= vlan_tx_tag_get(skb
);
5194 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
5195 tx_flags
&= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK
;
5196 tx_flags
|= (skb
->queue_mapping
<< 13);
5198 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
5199 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
5200 } else if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
5201 if (skb
->priority
!= TC_PRIO_CONTROL
) {
5202 tx_flags
|= (skb
->queue_mapping
<< 13);
5203 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
5204 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
5206 skb
->queue_mapping
=
5207 adapter
->ring_feature
[RING_F_DCB
].indices
-1;
5211 r_idx
= skb
->queue_mapping
;
5212 tx_ring
= &adapter
->tx_ring
[r_idx
];
5214 if ((adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) &&
5215 (skb
->protocol
== htons(ETH_P_FCOE
))) {
5216 tx_flags
|= IXGBE_TX_FLAGS_FCOE
;
5218 r_idx
= smp_processor_id();
5219 r_idx
&= (adapter
->ring_feature
[RING_F_FCOE
].indices
- 1);
5220 r_idx
+= adapter
->ring_feature
[RING_F_FCOE
].mask
;
5221 tx_ring
= &adapter
->tx_ring
[r_idx
];
5224 /* four things can cause us to need a context descriptor */
5225 if (skb_is_gso(skb
) ||
5226 (skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
5227 (tx_flags
& IXGBE_TX_FLAGS_VLAN
) ||
5228 (tx_flags
& IXGBE_TX_FLAGS_FCOE
))
5231 count
+= TXD_USE_COUNT(skb_headlen(skb
));
5232 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
5233 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
5235 if (ixgbe_maybe_stop_tx(netdev
, tx_ring
, count
)) {
5237 return NETDEV_TX_BUSY
;
5240 first
= tx_ring
->next_to_use
;
5241 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
) {
5243 /* setup tx offload for FCoE */
5244 tso
= ixgbe_fso(adapter
, tx_ring
, skb
, tx_flags
, &hdr_len
);
5246 dev_kfree_skb_any(skb
);
5247 return NETDEV_TX_OK
;
5250 tx_flags
|= IXGBE_TX_FLAGS_FSO
;
5251 #endif /* IXGBE_FCOE */
5253 if (skb
->protocol
== htons(ETH_P_IP
))
5254 tx_flags
|= IXGBE_TX_FLAGS_IPV4
;
5255 tso
= ixgbe_tso(adapter
, tx_ring
, skb
, tx_flags
, &hdr_len
);
5257 dev_kfree_skb_any(skb
);
5258 return NETDEV_TX_OK
;
5262 tx_flags
|= IXGBE_TX_FLAGS_TSO
;
5263 else if (ixgbe_tx_csum(adapter
, tx_ring
, skb
, tx_flags
) &&
5264 (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5265 tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
5268 count
= ixgbe_tx_map(adapter
, tx_ring
, skb
, tx_flags
, first
);
5270 /* add the ATR filter if ATR is on */
5271 if (tx_ring
->atr_sample_rate
) {
5272 ++tx_ring
->atr_count
;
5273 if ((tx_ring
->atr_count
>= tx_ring
->atr_sample_rate
) &&
5274 test_bit(__IXGBE_FDIR_INIT_DONE
,
5275 &tx_ring
->reinit_state
)) {
5276 ixgbe_atr(adapter
, skb
, tx_ring
->queue_index
,
5278 tx_ring
->atr_count
= 0;
5281 ixgbe_tx_queue(adapter
, tx_ring
, tx_flags
, count
, skb
->len
,
5283 ixgbe_maybe_stop_tx(netdev
, tx_ring
, DESC_NEEDED
);
5286 dev_kfree_skb_any(skb
);
5287 tx_ring
->tx_buffer_info
[first
].time_stamp
= 0;
5288 tx_ring
->next_to_use
= first
;
5291 return NETDEV_TX_OK
;
5295 * ixgbe_get_stats - Get System Network Statistics
5296 * @netdev: network interface device structure
5298 * Returns the address of the device statistics structure.
5299 * The statistics are actually updated from the timer callback.
5301 static struct net_device_stats
*ixgbe_get_stats(struct net_device
*netdev
)
5303 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5305 /* only return the current stats */
5306 return &adapter
->net_stats
;
5310 * ixgbe_set_mac - Change the Ethernet Address of the NIC
5311 * @netdev: network interface device structure
5312 * @p: pointer to an address structure
5314 * Returns 0 on success, negative on failure
5316 static int ixgbe_set_mac(struct net_device
*netdev
, void *p
)
5318 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5319 struct ixgbe_hw
*hw
= &adapter
->hw
;
5320 struct sockaddr
*addr
= p
;
5322 if (!is_valid_ether_addr(addr
->sa_data
))
5323 return -EADDRNOTAVAIL
;
5325 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
5326 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
5328 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, 0, IXGBE_RAH_AV
);
5334 ixgbe_mdio_read(struct net_device
*netdev
, int prtad
, int devad
, u16 addr
)
5336 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5337 struct ixgbe_hw
*hw
= &adapter
->hw
;
5341 if (prtad
!= hw
->phy
.mdio
.prtad
)
5343 rc
= hw
->phy
.ops
.read_reg(hw
, addr
, devad
, &value
);
5349 static int ixgbe_mdio_write(struct net_device
*netdev
, int prtad
, int devad
,
5350 u16 addr
, u16 value
)
5352 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5353 struct ixgbe_hw
*hw
= &adapter
->hw
;
5355 if (prtad
!= hw
->phy
.mdio
.prtad
)
5357 return hw
->phy
.ops
.write_reg(hw
, addr
, devad
, value
);
5360 static int ixgbe_ioctl(struct net_device
*netdev
, struct ifreq
*req
, int cmd
)
5362 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5364 return mdio_mii_ioctl(&adapter
->hw
.phy
.mdio
, if_mii(req
), cmd
);
5368 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
5370 * @netdev: network interface device structure
5372 * Returns non-zero on failure
5374 static int ixgbe_add_sanmac_netdev(struct net_device
*dev
)
5377 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
5378 struct ixgbe_mac_info
*mac
= &adapter
->hw
.mac
;
5380 if (is_valid_ether_addr(mac
->san_addr
)) {
5382 err
= dev_addr_add(dev
, mac
->san_addr
, NETDEV_HW_ADDR_T_SAN
);
5389 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
5391 * @netdev: network interface device structure
5393 * Returns non-zero on failure
5395 static int ixgbe_del_sanmac_netdev(struct net_device
*dev
)
5398 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
5399 struct ixgbe_mac_info
*mac
= &adapter
->hw
.mac
;
5401 if (is_valid_ether_addr(mac
->san_addr
)) {
5403 err
= dev_addr_del(dev
, mac
->san_addr
, NETDEV_HW_ADDR_T_SAN
);
5409 #ifdef CONFIG_NET_POLL_CONTROLLER
5411 * Polling 'interrupt' - used by things like netconsole to send skbs
5412 * without having to re-enable interrupts. It's not called while
5413 * the interrupt routine is executing.
5415 static void ixgbe_netpoll(struct net_device
*netdev
)
5417 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5420 adapter
->flags
|= IXGBE_FLAG_IN_NETPOLL
;
5421 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
5422 int num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
5423 for (i
= 0; i
< num_q_vectors
; i
++) {
5424 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[i
];
5425 ixgbe_msix_clean_many(0, q_vector
);
5428 ixgbe_intr(adapter
->pdev
->irq
, netdev
);
5430 adapter
->flags
&= ~IXGBE_FLAG_IN_NETPOLL
;
5434 static const struct net_device_ops ixgbe_netdev_ops
= {
5435 .ndo_open
= ixgbe_open
,
5436 .ndo_stop
= ixgbe_close
,
5437 .ndo_start_xmit
= ixgbe_xmit_frame
,
5438 .ndo_select_queue
= ixgbe_select_queue
,
5439 .ndo_get_stats
= ixgbe_get_stats
,
5440 .ndo_set_rx_mode
= ixgbe_set_rx_mode
,
5441 .ndo_set_multicast_list
= ixgbe_set_rx_mode
,
5442 .ndo_validate_addr
= eth_validate_addr
,
5443 .ndo_set_mac_address
= ixgbe_set_mac
,
5444 .ndo_change_mtu
= ixgbe_change_mtu
,
5445 .ndo_tx_timeout
= ixgbe_tx_timeout
,
5446 .ndo_vlan_rx_register
= ixgbe_vlan_rx_register
,
5447 .ndo_vlan_rx_add_vid
= ixgbe_vlan_rx_add_vid
,
5448 .ndo_vlan_rx_kill_vid
= ixgbe_vlan_rx_kill_vid
,
5449 .ndo_do_ioctl
= ixgbe_ioctl
,
5450 #ifdef CONFIG_NET_POLL_CONTROLLER
5451 .ndo_poll_controller
= ixgbe_netpoll
,
5454 .ndo_fcoe_ddp_setup
= ixgbe_fcoe_ddp_get
,
5455 .ndo_fcoe_ddp_done
= ixgbe_fcoe_ddp_put
,
5456 .ndo_fcoe_enable
= ixgbe_fcoe_enable
,
5457 .ndo_fcoe_disable
= ixgbe_fcoe_disable
,
5458 #endif /* IXGBE_FCOE */
5462 * ixgbe_probe - Device Initialization Routine
5463 * @pdev: PCI device information struct
5464 * @ent: entry in ixgbe_pci_tbl
5466 * Returns 0 on success, negative on failure
5468 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
5469 * The OS initialization, configuring of the adapter private structure,
5470 * and a hardware reset occur.
5472 static int __devinit
ixgbe_probe(struct pci_dev
*pdev
,
5473 const struct pci_device_id
*ent
)
5475 struct net_device
*netdev
;
5476 struct ixgbe_adapter
*adapter
= NULL
;
5477 struct ixgbe_hw
*hw
;
5478 const struct ixgbe_info
*ii
= ixgbe_info_tbl
[ent
->driver_data
];
5479 static int cards_found
;
5480 int i
, err
, pci_using_dac
;
5486 err
= pci_enable_device_mem(pdev
);
5490 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)) &&
5491 !pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64))) {
5494 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
5496 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
5498 dev_err(&pdev
->dev
, "No usable DMA "
5499 "configuration, aborting\n");
5506 err
= pci_request_selected_regions(pdev
, pci_select_bars(pdev
,
5507 IORESOURCE_MEM
), ixgbe_driver_name
);
5510 "pci_request_selected_regions failed 0x%x\n", err
);
5514 err
= pci_enable_pcie_error_reporting(pdev
);
5516 dev_err(&pdev
->dev
, "pci_enable_pcie_error_reporting failed "
5518 /* non-fatal, continue */
5521 pci_set_master(pdev
);
5522 pci_save_state(pdev
);
5524 netdev
= alloc_etherdev_mq(sizeof(struct ixgbe_adapter
), MAX_TX_QUEUES
);
5527 goto err_alloc_etherdev
;
5530 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
5532 pci_set_drvdata(pdev
, netdev
);
5533 adapter
= netdev_priv(netdev
);
5535 adapter
->netdev
= netdev
;
5536 adapter
->pdev
= pdev
;
5539 adapter
->msg_enable
= (1 << DEFAULT_DEBUG_LEVEL_SHIFT
) - 1;
5541 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
5542 pci_resource_len(pdev
, 0));
5548 for (i
= 1; i
<= 5; i
++) {
5549 if (pci_resource_len(pdev
, i
) == 0)
5553 netdev
->netdev_ops
= &ixgbe_netdev_ops
;
5554 ixgbe_set_ethtool_ops(netdev
);
5555 netdev
->watchdog_timeo
= 5 * HZ
;
5556 strcpy(netdev
->name
, pci_name(pdev
));
5558 adapter
->bd_number
= cards_found
;
5561 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
5562 hw
->mac
.type
= ii
->mac
;
5565 memcpy(&hw
->eeprom
.ops
, ii
->eeprom_ops
, sizeof(hw
->eeprom
.ops
));
5566 eec
= IXGBE_READ_REG(hw
, IXGBE_EEC
);
5567 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
5568 if (!(eec
& (1 << 8)))
5569 hw
->eeprom
.ops
.read
= &ixgbe_read_eeprom_bit_bang_generic
;
5572 memcpy(&hw
->phy
.ops
, ii
->phy_ops
, sizeof(hw
->phy
.ops
));
5573 hw
->phy
.sfp_type
= ixgbe_sfp_type_unknown
;
5574 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
5575 hw
->phy
.mdio
.prtad
= MDIO_PRTAD_NONE
;
5576 hw
->phy
.mdio
.mmds
= 0;
5577 hw
->phy
.mdio
.mode_support
= MDIO_SUPPORTS_C45
| MDIO_EMULATE_C22
;
5578 hw
->phy
.mdio
.dev
= netdev
;
5579 hw
->phy
.mdio
.mdio_read
= ixgbe_mdio_read
;
5580 hw
->phy
.mdio
.mdio_write
= ixgbe_mdio_write
;
5582 /* set up this timer and work struct before calling get_invariants
5583 * which might start the timer
5585 init_timer(&adapter
->sfp_timer
);
5586 adapter
->sfp_timer
.function
= &ixgbe_sfp_timer
;
5587 adapter
->sfp_timer
.data
= (unsigned long) adapter
;
5589 INIT_WORK(&adapter
->sfp_task
, ixgbe_sfp_task
);
5591 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
5592 INIT_WORK(&adapter
->multispeed_fiber_task
, ixgbe_multispeed_fiber_task
);
5594 /* a new SFP+ module arrival, called from GPI SDP2 context */
5595 INIT_WORK(&adapter
->sfp_config_module_task
,
5596 ixgbe_sfp_config_module_task
);
5598 ii
->get_invariants(hw
);
5600 /* setup the private structure */
5601 err
= ixgbe_sw_init(adapter
);
5606 * If there is a fan on this device and it has failed log the
5609 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
5610 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
5611 if (esdp
& IXGBE_ESDP_SDP1
)
5612 DPRINTK(PROBE
, CRIT
,
5613 "Fan has stopped, replace the adapter\n");
5616 /* reset_hw fills in the perm_addr as well */
5617 err
= hw
->mac
.ops
.reset_hw(hw
);
5618 if (err
== IXGBE_ERR_SFP_NOT_PRESENT
&&
5619 hw
->mac
.type
== ixgbe_mac_82598EB
) {
5621 * Start a kernel thread to watch for a module to arrive.
5622 * Only do this for 82598, since 82599 will generate
5623 * interrupts on module arrival.
5625 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
5626 mod_timer(&adapter
->sfp_timer
,
5627 round_jiffies(jiffies
+ (2 * HZ
)));
5629 } else if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
5630 dev_err(&adapter
->pdev
->dev
, "failed to initialize because "
5631 "an unsupported SFP+ module type was detected.\n"
5632 "Reload the driver after installing a supported "
5636 dev_err(&adapter
->pdev
->dev
, "HW Init failed: %d\n", err
);
5640 netdev
->features
= NETIF_F_SG
|
5642 NETIF_F_HW_VLAN_TX
|
5643 NETIF_F_HW_VLAN_RX
|
5644 NETIF_F_HW_VLAN_FILTER
;
5646 netdev
->features
|= NETIF_F_IPV6_CSUM
;
5647 netdev
->features
|= NETIF_F_TSO
;
5648 netdev
->features
|= NETIF_F_TSO6
;
5649 netdev
->features
|= NETIF_F_GRO
;
5651 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
)
5652 netdev
->features
|= NETIF_F_SCTP_CSUM
;
5654 netdev
->vlan_features
|= NETIF_F_TSO
;
5655 netdev
->vlan_features
|= NETIF_F_TSO6
;
5656 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
5657 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
5658 netdev
->vlan_features
|= NETIF_F_SG
;
5660 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)
5661 adapter
->flags
&= ~IXGBE_FLAG_RSS_ENABLED
;
5663 #ifdef CONFIG_IXGBE_DCB
5664 netdev
->dcbnl_ops
= &dcbnl_ops
;
5668 if (adapter
->flags
& IXGBE_FLAG_FCOE_CAPABLE
) {
5669 if (hw
->mac
.ops
.get_device_caps
) {
5670 hw
->mac
.ops
.get_device_caps(hw
, &device_caps
);
5671 if (device_caps
& IXGBE_DEVICE_CAPS_FCOE_OFFLOADS
)
5672 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
5675 #endif /* IXGBE_FCOE */
5677 netdev
->features
|= NETIF_F_HIGHDMA
;
5679 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
5680 netdev
->features
|= NETIF_F_LRO
;
5682 /* make sure the EEPROM is good */
5683 if (hw
->eeprom
.ops
.validate_checksum(hw
, NULL
) < 0) {
5684 dev_err(&pdev
->dev
, "The EEPROM Checksum Is Not Valid\n");
5689 memcpy(netdev
->dev_addr
, hw
->mac
.perm_addr
, netdev
->addr_len
);
5690 memcpy(netdev
->perm_addr
, hw
->mac
.perm_addr
, netdev
->addr_len
);
5692 if (ixgbe_validate_mac_addr(netdev
->perm_addr
)) {
5693 dev_err(&pdev
->dev
, "invalid MAC address\n");
5698 init_timer(&adapter
->watchdog_timer
);
5699 adapter
->watchdog_timer
.function
= &ixgbe_watchdog
;
5700 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
5702 INIT_WORK(&adapter
->reset_task
, ixgbe_reset_task
);
5703 INIT_WORK(&adapter
->watchdog_task
, ixgbe_watchdog_task
);
5705 err
= ixgbe_init_interrupt_scheme(adapter
);
5709 switch (pdev
->device
) {
5710 case IXGBE_DEV_ID_82599_KX4
:
5711 adapter
->wol
= (IXGBE_WUFC_MAG
| IXGBE_WUFC_EX
|
5712 IXGBE_WUFC_MC
| IXGBE_WUFC_BC
);
5713 /* Enable ACPI wakeup in GRC */
5714 IXGBE_WRITE_REG(hw
, IXGBE_GRC
,
5715 (IXGBE_READ_REG(hw
, IXGBE_GRC
) & ~IXGBE_GRC_APME
));
5721 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
5723 /* pick up the PCI bus settings for reporting later */
5724 hw
->mac
.ops
.get_bus_info(hw
);
5726 /* print bus type/speed/width info */
5727 dev_info(&pdev
->dev
, "(PCI Express:%s:%s) %pM\n",
5728 ((hw
->bus
.speed
== ixgbe_bus_speed_5000
) ? "5.0Gb/s":
5729 (hw
->bus
.speed
== ixgbe_bus_speed_2500
) ? "2.5Gb/s":"Unknown"),
5730 ((hw
->bus
.width
== ixgbe_bus_width_pcie_x8
) ? "Width x8" :
5731 (hw
->bus
.width
== ixgbe_bus_width_pcie_x4
) ? "Width x4" :
5732 (hw
->bus
.width
== ixgbe_bus_width_pcie_x1
) ? "Width x1" :
5735 ixgbe_read_pba_num_generic(hw
, &part_num
);
5736 if (ixgbe_is_sfp(hw
) && hw
->phy
.sfp_type
!= ixgbe_sfp_type_not_present
)
5737 dev_info(&pdev
->dev
, "MAC: %d, PHY: %d, SFP+: %d, PBA No: %06x-%03x\n",
5738 hw
->mac
.type
, hw
->phy
.type
, hw
->phy
.sfp_type
,
5739 (part_num
>> 8), (part_num
& 0xff));
5741 dev_info(&pdev
->dev
, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
5742 hw
->mac
.type
, hw
->phy
.type
,
5743 (part_num
>> 8), (part_num
& 0xff));
5745 if (hw
->bus
.width
<= ixgbe_bus_width_pcie_x4
) {
5746 dev_warn(&pdev
->dev
, "PCI-Express bandwidth available for "
5747 "this card is not sufficient for optimal "
5749 dev_warn(&pdev
->dev
, "For optimal performance a x8 "
5750 "PCI-Express slot is required.\n");
5753 /* save off EEPROM version number */
5754 hw
->eeprom
.ops
.read(hw
, 0x29, &adapter
->eeprom_version
);
5756 /* reset the hardware with the new settings */
5757 err
= hw
->mac
.ops
.start_hw(hw
);
5759 if (err
== IXGBE_ERR_EEPROM_VERSION
) {
5760 /* We are running on a pre-production device, log a warning */
5761 dev_warn(&pdev
->dev
, "This device is a pre-production "
5762 "adapter/LOM. Please be aware there may be issues "
5763 "associated with your hardware. If you are "
5764 "experiencing problems please contact your Intel or "
5765 "hardware representative who provided you with this "
5768 strcpy(netdev
->name
, "eth%d");
5769 err
= register_netdev(netdev
);
5773 /* carrier off reporting is important to ethtool even BEFORE open */
5774 netif_carrier_off(netdev
);
5776 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
5777 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
5778 INIT_WORK(&adapter
->fdir_reinit_task
, ixgbe_fdir_reinit_task
);
5780 #ifdef CONFIG_IXGBE_DCA
5781 if (dca_add_requester(&pdev
->dev
) == 0) {
5782 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
5783 ixgbe_setup_dca(adapter
);
5786 /* add san mac addr to netdev */
5787 ixgbe_add_sanmac_netdev(netdev
);
5789 dev_info(&pdev
->dev
, "Intel(R) 10 Gigabit Network Connection\n");
5794 ixgbe_release_hw_control(adapter
);
5795 ixgbe_clear_interrupt_scheme(adapter
);
5798 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
5799 del_timer_sync(&adapter
->sfp_timer
);
5800 cancel_work_sync(&adapter
->sfp_task
);
5801 cancel_work_sync(&adapter
->multispeed_fiber_task
);
5802 cancel_work_sync(&adapter
->sfp_config_module_task
);
5803 iounmap(hw
->hw_addr
);
5805 free_netdev(netdev
);
5807 pci_release_selected_regions(pdev
, pci_select_bars(pdev
,
5811 pci_disable_device(pdev
);
5816 * ixgbe_remove - Device Removal Routine
5817 * @pdev: PCI device information struct
5819 * ixgbe_remove is called by the PCI subsystem to alert the driver
5820 * that it should release a PCI device. The could be caused by a
5821 * Hot-Plug event, or because the driver is going to be removed from
5824 static void __devexit
ixgbe_remove(struct pci_dev
*pdev
)
5826 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5827 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5830 set_bit(__IXGBE_DOWN
, &adapter
->state
);
5831 /* clear the module not found bit to make sure the worker won't
5834 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
5835 del_timer_sync(&adapter
->watchdog_timer
);
5837 del_timer_sync(&adapter
->sfp_timer
);
5838 cancel_work_sync(&adapter
->watchdog_task
);
5839 cancel_work_sync(&adapter
->sfp_task
);
5840 cancel_work_sync(&adapter
->multispeed_fiber_task
);
5841 cancel_work_sync(&adapter
->sfp_config_module_task
);
5842 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
5843 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
5844 cancel_work_sync(&adapter
->fdir_reinit_task
);
5845 flush_scheduled_work();
5847 #ifdef CONFIG_IXGBE_DCA
5848 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
5849 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
5850 dca_remove_requester(&pdev
->dev
);
5851 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
, 1);
5856 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
5857 ixgbe_cleanup_fcoe(adapter
);
5859 #endif /* IXGBE_FCOE */
5861 /* remove the added san mac */
5862 ixgbe_del_sanmac_netdev(netdev
);
5864 if (netdev
->reg_state
== NETREG_REGISTERED
)
5865 unregister_netdev(netdev
);
5867 ixgbe_clear_interrupt_scheme(adapter
);
5869 ixgbe_release_hw_control(adapter
);
5871 iounmap(adapter
->hw
.hw_addr
);
5872 pci_release_selected_regions(pdev
, pci_select_bars(pdev
,
5875 DPRINTK(PROBE
, INFO
, "complete\n");
5877 free_netdev(netdev
);
5879 err
= pci_disable_pcie_error_reporting(pdev
);
5882 "pci_disable_pcie_error_reporting failed 0x%x\n", err
);
5884 pci_disable_device(pdev
);
5888 * ixgbe_io_error_detected - called when PCI error is detected
5889 * @pdev: Pointer to PCI device
5890 * @state: The current pci connection state
5892 * This function is called after a PCI bus error affecting
5893 * this device has been detected.
5895 static pci_ers_result_t
ixgbe_io_error_detected(struct pci_dev
*pdev
,
5896 pci_channel_state_t state
)
5898 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5899 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5901 netif_device_detach(netdev
);
5903 if (state
== pci_channel_io_perm_failure
)
5904 return PCI_ERS_RESULT_DISCONNECT
;
5906 if (netif_running(netdev
))
5907 ixgbe_down(adapter
);
5908 pci_disable_device(pdev
);
5910 /* Request a slot reset. */
5911 return PCI_ERS_RESULT_NEED_RESET
;
5915 * ixgbe_io_slot_reset - called after the pci bus has been reset.
5916 * @pdev: Pointer to PCI device
5918 * Restart the card from scratch, as if from a cold-boot.
5920 static pci_ers_result_t
ixgbe_io_slot_reset(struct pci_dev
*pdev
)
5922 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5923 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5924 pci_ers_result_t result
;
5927 if (pci_enable_device_mem(pdev
)) {
5929 "Cannot re-enable PCI device after reset.\n");
5930 result
= PCI_ERS_RESULT_DISCONNECT
;
5932 pci_set_master(pdev
);
5933 pci_restore_state(pdev
);
5935 pci_wake_from_d3(pdev
, false);
5937 ixgbe_reset(adapter
);
5938 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
5939 result
= PCI_ERS_RESULT_RECOVERED
;
5942 err
= pci_cleanup_aer_uncorrect_error_status(pdev
);
5945 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err
);
5946 /* non-fatal, continue */
5953 * ixgbe_io_resume - called when traffic can start flowing again.
5954 * @pdev: Pointer to PCI device
5956 * This callback is called when the error recovery driver tells us that
5957 * its OK to resume normal operation.
5959 static void ixgbe_io_resume(struct pci_dev
*pdev
)
5961 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5962 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5964 if (netif_running(netdev
)) {
5965 if (ixgbe_up(adapter
)) {
5966 DPRINTK(PROBE
, INFO
, "ixgbe_up failed after reset\n");
5971 netif_device_attach(netdev
);
5974 static struct pci_error_handlers ixgbe_err_handler
= {
5975 .error_detected
= ixgbe_io_error_detected
,
5976 .slot_reset
= ixgbe_io_slot_reset
,
5977 .resume
= ixgbe_io_resume
,
5980 static struct pci_driver ixgbe_driver
= {
5981 .name
= ixgbe_driver_name
,
5982 .id_table
= ixgbe_pci_tbl
,
5983 .probe
= ixgbe_probe
,
5984 .remove
= __devexit_p(ixgbe_remove
),
5986 .suspend
= ixgbe_suspend
,
5987 .resume
= ixgbe_resume
,
5989 .shutdown
= ixgbe_shutdown
,
5990 .err_handler
= &ixgbe_err_handler
5994 * ixgbe_init_module - Driver Registration Routine
5996 * ixgbe_init_module is the first routine called when the driver is
5997 * loaded. All it does is register with the PCI subsystem.
5999 static int __init
ixgbe_init_module(void)
6002 printk(KERN_INFO
"%s: %s - version %s\n", ixgbe_driver_name
,
6003 ixgbe_driver_string
, ixgbe_driver_version
);
6005 printk(KERN_INFO
"%s: %s\n", ixgbe_driver_name
, ixgbe_copyright
);
6007 #ifdef CONFIG_IXGBE_DCA
6008 dca_register_notify(&dca_notifier
);
6011 ret
= pci_register_driver(&ixgbe_driver
);
6015 module_init(ixgbe_init_module
);
6018 * ixgbe_exit_module - Driver Exit Cleanup Routine
6020 * ixgbe_exit_module is called just before the driver is removed
6023 static void __exit
ixgbe_exit_module(void)
6025 #ifdef CONFIG_IXGBE_DCA
6026 dca_unregister_notify(&dca_notifier
);
6028 pci_unregister_driver(&ixgbe_driver
);
6031 #ifdef CONFIG_IXGBE_DCA
6032 static int ixgbe_notify_dca(struct notifier_block
*nb
, unsigned long event
,
6037 ret_val
= driver_for_each_device(&ixgbe_driver
.driver
, NULL
, &event
,
6038 __ixgbe_notify_dca
);
6040 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
6043 #endif /* CONFIG_IXGBE_DCA */
6046 * ixgbe_get_hw_dev_name - return device name string
6047 * used by hardware layer to print debugging information
6049 char *ixgbe_get_hw_dev_name(struct ixgbe_hw
*hw
)
6051 struct ixgbe_adapter
*adapter
= hw
->back
;
6052 return adapter
->netdev
->name
;
6056 module_exit(ixgbe_exit_module
);