1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2010 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"
47 #include "ixgbe_dcb_82599.h"
48 #include "ixgbe_sriov.h"
50 char ixgbe_driver_name
[] = "ixgbe";
51 static const char ixgbe_driver_string
[] =
52 "Intel(R) 10 Gigabit PCI Express Network Driver";
54 #define DRV_VERSION "2.0.62-k2"
55 const char ixgbe_driver_version
[] = DRV_VERSION
;
56 static char ixgbe_copyright
[] = "Copyright (c) 1999-2010 Intel Corporation.";
58 static const struct ixgbe_info
*ixgbe_info_tbl
[] = {
59 [board_82598
] = &ixgbe_82598_info
,
60 [board_82599
] = &ixgbe_82599_info
,
63 /* ixgbe_pci_tbl - PCI Device ID Table
65 * Wildcard entries (PCI_ANY_ID) should come last
66 * Last entry must be all 0s
68 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
69 * Class, Class Mask, private data (not used) }
71 static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl
) = {
72 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598
),
74 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_DUAL_PORT
),
76 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_SINGLE_PORT
),
78 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT
),
80 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT2
),
82 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_CX4
),
84 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_CX4_DUAL_PORT
),
86 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_DA_DUAL_PORT
),
88 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
),
90 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_XF_LR
),
92 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_SFP_LOM
),
94 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_BX
),
96 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4
),
98 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_XAUI_LOM
),
100 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KR
),
102 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP
),
104 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_EM
),
106 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4_MEZZ
),
108 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_CX4
),
110 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_COMBO_BACKPLANE
),
113 /* required last entry */
116 MODULE_DEVICE_TABLE(pci
, ixgbe_pci_tbl
);
118 #ifdef CONFIG_IXGBE_DCA
119 static int ixgbe_notify_dca(struct notifier_block
*, unsigned long event
,
121 static struct notifier_block dca_notifier
= {
122 .notifier_call
= ixgbe_notify_dca
,
128 #ifdef CONFIG_PCI_IOV
129 static unsigned int max_vfs
;
130 module_param(max_vfs
, uint
, 0);
131 MODULE_PARM_DESC(max_vfs
, "Maximum number of virtual functions to allocate "
132 "per physical function");
133 #endif /* CONFIG_PCI_IOV */
135 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
136 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
137 MODULE_LICENSE("GPL");
138 MODULE_VERSION(DRV_VERSION
);
140 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
142 static inline void ixgbe_disable_sriov(struct ixgbe_adapter
*adapter
)
144 struct ixgbe_hw
*hw
= &adapter
->hw
;
149 #ifdef CONFIG_PCI_IOV
150 /* disable iov and allow time for transactions to clear */
151 pci_disable_sriov(adapter
->pdev
);
154 /* turn off device IOV mode */
155 gcr
= IXGBE_READ_REG(hw
, IXGBE_GCR_EXT
);
156 gcr
&= ~(IXGBE_GCR_EXT_SRIOV
);
157 IXGBE_WRITE_REG(hw
, IXGBE_GCR_EXT
, gcr
);
158 gpie
= IXGBE_READ_REG(hw
, IXGBE_GPIE
);
159 gpie
&= ~IXGBE_GPIE_VTMODE_MASK
;
160 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
162 /* set default pool back to 0 */
163 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VT_CTL
);
164 vmdctl
&= ~IXGBE_VT_CTL_POOL_MASK
;
165 IXGBE_WRITE_REG(hw
, IXGBE_VT_CTL
, vmdctl
);
167 /* take a breather then clean up driver data */
170 kfree(adapter
->vfinfo
);
171 adapter
->vfinfo
= NULL
;
173 adapter
->num_vfs
= 0;
174 adapter
->flags
&= ~IXGBE_FLAG_SRIOV_ENABLED
;
177 static void ixgbe_release_hw_control(struct ixgbe_adapter
*adapter
)
181 /* Let firmware take over control of h/w */
182 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
183 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
184 ctrl_ext
& ~IXGBE_CTRL_EXT_DRV_LOAD
);
187 static void ixgbe_get_hw_control(struct ixgbe_adapter
*adapter
)
191 /* Let firmware know the driver has taken over */
192 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
193 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
194 ctrl_ext
| IXGBE_CTRL_EXT_DRV_LOAD
);
198 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
199 * @adapter: pointer to adapter struct
200 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
201 * @queue: queue to map the corresponding interrupt to
202 * @msix_vector: the vector to map to the corresponding queue
205 static void ixgbe_set_ivar(struct ixgbe_adapter
*adapter
, s8 direction
,
206 u8 queue
, u8 msix_vector
)
209 struct ixgbe_hw
*hw
= &adapter
->hw
;
210 switch (hw
->mac
.type
) {
211 case ixgbe_mac_82598EB
:
212 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
215 index
= (((direction
* 64) + queue
) >> 2) & 0x1F;
216 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(index
));
217 ivar
&= ~(0xFF << (8 * (queue
& 0x3)));
218 ivar
|= (msix_vector
<< (8 * (queue
& 0x3)));
219 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(index
), ivar
);
221 case ixgbe_mac_82599EB
:
222 if (direction
== -1) {
224 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
225 index
= ((queue
& 1) * 8);
226 ivar
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_IVAR_MISC
);
227 ivar
&= ~(0xFF << index
);
228 ivar
|= (msix_vector
<< index
);
229 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_IVAR_MISC
, ivar
);
232 /* tx or rx causes */
233 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
234 index
= ((16 * (queue
& 1)) + (8 * direction
));
235 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(queue
>> 1));
236 ivar
&= ~(0xFF << index
);
237 ivar
|= (msix_vector
<< index
);
238 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(queue
>> 1), ivar
);
246 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter
*adapter
,
251 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
252 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
253 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS
, mask
);
255 mask
= (qmask
& 0xFFFFFFFF);
256 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(0), mask
);
257 mask
= (qmask
>> 32);
258 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(1), mask
);
262 static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter
*adapter
,
263 struct ixgbe_tx_buffer
266 if (tx_buffer_info
->dma
) {
267 if (tx_buffer_info
->mapped_as_page
)
268 pci_unmap_page(adapter
->pdev
,
270 tx_buffer_info
->length
,
273 pci_unmap_single(adapter
->pdev
,
275 tx_buffer_info
->length
,
277 tx_buffer_info
->dma
= 0;
279 if (tx_buffer_info
->skb
) {
280 dev_kfree_skb_any(tx_buffer_info
->skb
);
281 tx_buffer_info
->skb
= NULL
;
283 tx_buffer_info
->time_stamp
= 0;
284 /* tx_buffer_info must be completely set up in the transmit path */
288 * ixgbe_tx_is_paused - check if the tx ring is paused
289 * @adapter: the ixgbe adapter
290 * @tx_ring: the corresponding tx_ring
292 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
293 * corresponding TC of this tx_ring when checking TFCS.
295 * Returns : true if paused
297 static inline bool ixgbe_tx_is_paused(struct ixgbe_adapter
*adapter
,
298 struct ixgbe_ring
*tx_ring
)
300 u32 txoff
= IXGBE_TFCS_TXOFF
;
302 #ifdef CONFIG_IXGBE_DCB
303 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
305 int reg_idx
= tx_ring
->reg_idx
;
306 int dcb_i
= adapter
->ring_feature
[RING_F_DCB
].indices
;
308 switch (adapter
->hw
.mac
.type
) {
309 case ixgbe_mac_82598EB
:
311 txoff
= IXGBE_TFCS_TXOFF0
;
313 case ixgbe_mac_82599EB
:
315 txoff
= IXGBE_TFCS_TXOFF
;
319 if (tc
== 2) /* TC2, TC3 */
320 tc
+= (reg_idx
- 64) >> 4;
321 else if (tc
== 3) /* TC4, TC5, TC6, TC7 */
322 tc
+= 1 + ((reg_idx
- 96) >> 3);
323 } else if (dcb_i
== 4) {
327 tc
+= (reg_idx
- 64) >> 5;
328 if (tc
== 2) /* TC2, TC3 */
329 tc
+= (reg_idx
- 96) >> 4;
339 return IXGBE_READ_REG(&adapter
->hw
, IXGBE_TFCS
) & txoff
;
342 static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter
*adapter
,
343 struct ixgbe_ring
*tx_ring
,
346 struct ixgbe_hw
*hw
= &adapter
->hw
;
348 /* Detect a transmit hang in hardware, this serializes the
349 * check with the clearing of time_stamp and movement of eop */
350 adapter
->detect_tx_hung
= false;
351 if (tx_ring
->tx_buffer_info
[eop
].time_stamp
&&
352 time_after(jiffies
, tx_ring
->tx_buffer_info
[eop
].time_stamp
+ HZ
) &&
353 !ixgbe_tx_is_paused(adapter
, tx_ring
)) {
354 /* detected Tx unit hang */
355 union ixgbe_adv_tx_desc
*tx_desc
;
356 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
357 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
359 " TDH, TDT <%x>, <%x>\n"
360 " next_to_use <%x>\n"
361 " next_to_clean <%x>\n"
362 "tx_buffer_info[next_to_clean]\n"
363 " time_stamp <%lx>\n"
365 tx_ring
->queue_index
,
366 IXGBE_READ_REG(hw
, tx_ring
->head
),
367 IXGBE_READ_REG(hw
, tx_ring
->tail
),
368 tx_ring
->next_to_use
, eop
,
369 tx_ring
->tx_buffer_info
[eop
].time_stamp
, jiffies
);
376 #define IXGBE_MAX_TXD_PWR 14
377 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
379 /* Tx Descriptors needed, worst case */
380 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
381 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
382 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
383 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
385 static void ixgbe_tx_timeout(struct net_device
*netdev
);
388 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
389 * @q_vector: structure containing interrupt and ring information
390 * @tx_ring: tx ring to clean
392 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector
*q_vector
,
393 struct ixgbe_ring
*tx_ring
)
395 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
396 struct net_device
*netdev
= adapter
->netdev
;
397 union ixgbe_adv_tx_desc
*tx_desc
, *eop_desc
;
398 struct ixgbe_tx_buffer
*tx_buffer_info
;
399 unsigned int i
, eop
, count
= 0;
400 unsigned int total_bytes
= 0, total_packets
= 0;
402 i
= tx_ring
->next_to_clean
;
403 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
404 eop_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
406 while ((eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)) &&
407 (count
< tx_ring
->work_limit
)) {
408 bool cleaned
= false;
409 for ( ; !cleaned
; count
++) {
411 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, i
);
412 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
413 cleaned
= (i
== eop
);
414 skb
= tx_buffer_info
->skb
;
416 if (cleaned
&& skb
) {
417 unsigned int segs
, bytecount
;
418 unsigned int hlen
= skb_headlen(skb
);
420 /* gso_segs is currently only valid for tcp */
421 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
423 /* adjust for FCoE Sequence Offload */
424 if ((adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
425 && (skb
->protocol
== htons(ETH_P_FCOE
)) &&
427 hlen
= skb_transport_offset(skb
) +
428 sizeof(struct fc_frame_header
) +
429 sizeof(struct fcoe_crc_eof
);
430 segs
= DIV_ROUND_UP(skb
->len
- hlen
,
431 skb_shinfo(skb
)->gso_size
);
433 #endif /* IXGBE_FCOE */
434 /* multiply data chunks by size of headers */
435 bytecount
= ((segs
- 1) * hlen
) + skb
->len
;
436 total_packets
+= segs
;
437 total_bytes
+= bytecount
;
440 ixgbe_unmap_and_free_tx_resource(adapter
,
443 tx_desc
->wb
.status
= 0;
446 if (i
== tx_ring
->count
)
450 eop
= tx_ring
->tx_buffer_info
[i
].next_to_watch
;
451 eop_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, eop
);
454 tx_ring
->next_to_clean
= i
;
456 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
457 if (unlikely(count
&& netif_carrier_ok(netdev
) &&
458 (IXGBE_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
459 /* Make sure that anybody stopping the queue after this
460 * sees the new next_to_clean.
463 if (__netif_subqueue_stopped(netdev
, tx_ring
->queue_index
) &&
464 !test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
465 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
466 ++tx_ring
->restart_queue
;
470 if (adapter
->detect_tx_hung
) {
471 if (ixgbe_check_tx_hang(adapter
, tx_ring
, i
)) {
472 /* schedule immediate reset if we believe we hung */
474 "tx hang %d detected, resetting adapter\n",
475 adapter
->tx_timeout_count
+ 1);
476 ixgbe_tx_timeout(adapter
->netdev
);
480 /* re-arm the interrupt */
481 if (count
>= tx_ring
->work_limit
)
482 ixgbe_irq_rearm_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
484 tx_ring
->total_bytes
+= total_bytes
;
485 tx_ring
->total_packets
+= total_packets
;
486 tx_ring
->stats
.packets
+= total_packets
;
487 tx_ring
->stats
.bytes
+= total_bytes
;
488 return (count
< tx_ring
->work_limit
);
491 #ifdef CONFIG_IXGBE_DCA
492 static void ixgbe_update_rx_dca(struct ixgbe_adapter
*adapter
,
493 struct ixgbe_ring
*rx_ring
)
497 int q
= rx_ring
->reg_idx
;
499 if (rx_ring
->cpu
!= cpu
) {
500 rxctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_DCA_RXCTRL(q
));
501 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
502 rxctrl
&= ~IXGBE_DCA_RXCTRL_CPUID_MASK
;
503 rxctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
);
504 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
505 rxctrl
&= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599
;
506 rxctrl
|= (dca3_get_tag(&adapter
->pdev
->dev
, cpu
) <<
507 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599
);
509 rxctrl
|= IXGBE_DCA_RXCTRL_DESC_DCA_EN
;
510 rxctrl
|= IXGBE_DCA_RXCTRL_HEAD_DCA_EN
;
511 rxctrl
&= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN
);
512 rxctrl
&= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN
|
513 IXGBE_DCA_RXCTRL_DESC_HSRO_EN
);
514 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_RXCTRL(q
), rxctrl
);
520 static void ixgbe_update_tx_dca(struct ixgbe_adapter
*adapter
,
521 struct ixgbe_ring
*tx_ring
)
525 int q
= tx_ring
->reg_idx
;
526 struct ixgbe_hw
*hw
= &adapter
->hw
;
528 if (tx_ring
->cpu
!= cpu
) {
529 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
530 txctrl
= IXGBE_READ_REG(hw
, IXGBE_DCA_TXCTRL(q
));
531 txctrl
&= ~IXGBE_DCA_TXCTRL_CPUID_MASK
;
532 txctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
);
533 txctrl
|= IXGBE_DCA_TXCTRL_DESC_DCA_EN
;
534 IXGBE_WRITE_REG(hw
, IXGBE_DCA_TXCTRL(q
), txctrl
);
535 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
536 txctrl
= IXGBE_READ_REG(hw
, IXGBE_DCA_TXCTRL_82599(q
));
537 txctrl
&= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599
;
538 txctrl
|= (dca3_get_tag(&adapter
->pdev
->dev
, cpu
) <<
539 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599
);
540 txctrl
|= IXGBE_DCA_TXCTRL_DESC_DCA_EN
;
541 IXGBE_WRITE_REG(hw
, IXGBE_DCA_TXCTRL_82599(q
), txctrl
);
548 static void ixgbe_setup_dca(struct ixgbe_adapter
*adapter
)
552 if (!(adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
))
555 /* always use CB2 mode, difference is masked in the CB driver */
556 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
, 2);
558 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
559 adapter
->tx_ring
[i
]->cpu
= -1;
560 ixgbe_update_tx_dca(adapter
, adapter
->tx_ring
[i
]);
562 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
563 adapter
->rx_ring
[i
]->cpu
= -1;
564 ixgbe_update_rx_dca(adapter
, adapter
->rx_ring
[i
]);
568 static int __ixgbe_notify_dca(struct device
*dev
, void *data
)
570 struct net_device
*netdev
= dev_get_drvdata(dev
);
571 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
572 unsigned long event
= *(unsigned long *)data
;
575 case DCA_PROVIDER_ADD
:
576 /* if we're already enabled, don't do it again */
577 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
579 if (dca_add_requester(dev
) == 0) {
580 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
581 ixgbe_setup_dca(adapter
);
584 /* Fall Through since DCA is disabled. */
585 case DCA_PROVIDER_REMOVE
:
586 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
587 dca_remove_requester(dev
);
588 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
589 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
, 1);
597 #endif /* CONFIG_IXGBE_DCA */
599 * ixgbe_receive_skb - Send a completed packet up the stack
600 * @adapter: board private structure
601 * @skb: packet to send up
602 * @status: hardware indication of status of receive
603 * @rx_ring: rx descriptor ring (for a specific queue) to setup
604 * @rx_desc: rx descriptor
606 static void ixgbe_receive_skb(struct ixgbe_q_vector
*q_vector
,
607 struct sk_buff
*skb
, u8 status
,
608 struct ixgbe_ring
*ring
,
609 union ixgbe_adv_rx_desc
*rx_desc
)
611 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
612 struct napi_struct
*napi
= &q_vector
->napi
;
613 bool is_vlan
= (status
& IXGBE_RXD_STAT_VP
);
614 u16 tag
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
616 skb_record_rx_queue(skb
, ring
->queue_index
);
617 if (!(adapter
->flags
& IXGBE_FLAG_IN_NETPOLL
)) {
618 if (adapter
->vlgrp
&& is_vlan
&& (tag
& VLAN_VID_MASK
))
619 vlan_gro_receive(napi
, adapter
->vlgrp
, tag
, skb
);
621 napi_gro_receive(napi
, skb
);
623 if (adapter
->vlgrp
&& is_vlan
&& (tag
& VLAN_VID_MASK
))
624 vlan_hwaccel_rx(skb
, adapter
->vlgrp
, tag
);
631 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
632 * @adapter: address of board private structure
633 * @status_err: hardware indication of status of receive
634 * @skb: skb currently being received and modified
636 static inline void ixgbe_rx_checksum(struct ixgbe_adapter
*adapter
,
637 union ixgbe_adv_rx_desc
*rx_desc
,
640 u32 status_err
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
642 skb
->ip_summed
= CHECKSUM_NONE
;
644 /* Rx csum disabled */
645 if (!(adapter
->flags
& IXGBE_FLAG_RX_CSUM_ENABLED
))
648 /* if IP and error */
649 if ((status_err
& IXGBE_RXD_STAT_IPCS
) &&
650 (status_err
& IXGBE_RXDADV_ERR_IPE
)) {
651 adapter
->hw_csum_rx_error
++;
655 if (!(status_err
& IXGBE_RXD_STAT_L4CS
))
658 if (status_err
& IXGBE_RXDADV_ERR_TCPE
) {
659 u16 pkt_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
662 * 82599 errata, UDP frames with a 0 checksum can be marked as
665 if ((pkt_info
& IXGBE_RXDADV_PKTTYPE_UDP
) &&
666 (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
))
669 adapter
->hw_csum_rx_error
++;
673 /* It must be a TCP or UDP packet with a valid checksum */
674 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
677 static inline void ixgbe_release_rx_desc(struct ixgbe_hw
*hw
,
678 struct ixgbe_ring
*rx_ring
, u32 val
)
681 * Force memory writes to complete before letting h/w
682 * know there are new descriptors to fetch. (Only
683 * applicable for weak-ordered memory model archs,
687 IXGBE_WRITE_REG(hw
, IXGBE_RDT(rx_ring
->reg_idx
), val
);
691 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
692 * @adapter: address of board private structure
694 static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter
*adapter
,
695 struct ixgbe_ring
*rx_ring
,
698 struct pci_dev
*pdev
= adapter
->pdev
;
699 union ixgbe_adv_rx_desc
*rx_desc
;
700 struct ixgbe_rx_buffer
*bi
;
703 i
= rx_ring
->next_to_use
;
704 bi
= &rx_ring
->rx_buffer_info
[i
];
706 while (cleaned_count
--) {
707 rx_desc
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
710 (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
)) {
712 bi
->page
= alloc_page(GFP_ATOMIC
);
714 adapter
->alloc_rx_page_failed
++;
719 /* use a half page if we're re-using */
720 bi
->page_offset
^= (PAGE_SIZE
/ 2);
723 bi
->page_dma
= pci_map_page(pdev
, bi
->page
,
731 /* netdev_alloc_skb reserves 32 bytes up front!! */
732 uint bufsz
= rx_ring
->rx_buf_len
+ SMP_CACHE_BYTES
;
733 skb
= netdev_alloc_skb(adapter
->netdev
, bufsz
);
736 adapter
->alloc_rx_buff_failed
++;
740 /* advance the data pointer to the next cache line */
741 skb_reserve(skb
, (PTR_ALIGN(skb
->data
, SMP_CACHE_BYTES
)
745 bi
->dma
= pci_map_single(pdev
, skb
->data
,
749 /* Refresh the desc even if buffer_addrs didn't change because
750 * each write-back erases this info. */
751 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
752 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->page_dma
);
753 rx_desc
->read
.hdr_addr
= cpu_to_le64(bi
->dma
);
755 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
);
759 if (i
== rx_ring
->count
)
761 bi
= &rx_ring
->rx_buffer_info
[i
];
765 if (rx_ring
->next_to_use
!= i
) {
766 rx_ring
->next_to_use
= i
;
768 i
= (rx_ring
->count
- 1);
770 ixgbe_release_rx_desc(&adapter
->hw
, rx_ring
, i
);
774 static inline u16
ixgbe_get_hdr_info(union ixgbe_adv_rx_desc
*rx_desc
)
776 return rx_desc
->wb
.lower
.lo_dword
.hs_rss
.hdr_info
;
779 static inline u16
ixgbe_get_pkt_info(union ixgbe_adv_rx_desc
*rx_desc
)
781 return rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
784 static inline u32
ixgbe_get_rsc_count(union ixgbe_adv_rx_desc
*rx_desc
)
786 return (le32_to_cpu(rx_desc
->wb
.lower
.lo_dword
.data
) &
787 IXGBE_RXDADV_RSCCNT_MASK
) >>
788 IXGBE_RXDADV_RSCCNT_SHIFT
;
792 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
793 * @skb: pointer to the last skb in the rsc queue
794 * @count: pointer to number of packets coalesced in this context
796 * This function changes a queue full of hw rsc buffers into a completed
797 * packet. It uses the ->prev pointers to find the first packet and then
798 * turns it into the frag list owner.
800 static inline struct sk_buff
*ixgbe_transform_rsc_queue(struct sk_buff
*skb
,
803 unsigned int frag_list_size
= 0;
806 struct sk_buff
*prev
= skb
->prev
;
807 frag_list_size
+= skb
->len
;
813 skb_shinfo(skb
)->frag_list
= skb
->next
;
815 skb
->len
+= frag_list_size
;
816 skb
->data_len
+= frag_list_size
;
817 skb
->truesize
+= frag_list_size
;
821 struct ixgbe_rsc_cb
{
825 #define IXGBE_RSC_CB(skb) ((struct ixgbe_rsc_cb *)(skb)->cb)
827 static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector
*q_vector
,
828 struct ixgbe_ring
*rx_ring
,
829 int *work_done
, int work_to_do
)
831 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
832 struct net_device
*netdev
= adapter
->netdev
;
833 struct pci_dev
*pdev
= adapter
->pdev
;
834 union ixgbe_adv_rx_desc
*rx_desc
, *next_rxd
;
835 struct ixgbe_rx_buffer
*rx_buffer_info
, *next_buffer
;
837 unsigned int i
, rsc_count
= 0;
840 bool cleaned
= false;
841 int cleaned_count
= 0;
842 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
845 #endif /* IXGBE_FCOE */
847 i
= rx_ring
->next_to_clean
;
848 rx_desc
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
849 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
850 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
852 while (staterr
& IXGBE_RXD_STAT_DD
) {
854 if (*work_done
>= work_to_do
)
858 rmb(); /* read descriptor and rx_buffer_info after status DD */
859 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
860 hdr_info
= le16_to_cpu(ixgbe_get_hdr_info(rx_desc
));
861 len
= (hdr_info
& IXGBE_RXDADV_HDRBUFLEN_MASK
) >>
862 IXGBE_RXDADV_HDRBUFLEN_SHIFT
;
863 if (len
> IXGBE_RX_HDR_SIZE
)
864 len
= IXGBE_RX_HDR_SIZE
;
865 upper_len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
867 len
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
871 skb
= rx_buffer_info
->skb
;
873 rx_buffer_info
->skb
= NULL
;
875 if (rx_buffer_info
->dma
) {
876 if ((adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) &&
877 (!(staterr
& IXGBE_RXD_STAT_EOP
)) &&
880 * When HWRSC is enabled, delay unmapping
881 * of the first packet. It carries the
882 * header information, HW may still
883 * access the header after the writeback.
884 * Only unmap it when EOP is reached
886 IXGBE_RSC_CB(skb
)->dma
= rx_buffer_info
->dma
;
888 pci_unmap_single(pdev
, rx_buffer_info
->dma
,
891 rx_buffer_info
->dma
= 0;
896 pci_unmap_page(pdev
, rx_buffer_info
->page_dma
,
897 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
898 rx_buffer_info
->page_dma
= 0;
899 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
,
900 rx_buffer_info
->page
,
901 rx_buffer_info
->page_offset
,
904 if ((rx_ring
->rx_buf_len
> (PAGE_SIZE
/ 2)) ||
905 (page_count(rx_buffer_info
->page
) != 1))
906 rx_buffer_info
->page
= NULL
;
908 get_page(rx_buffer_info
->page
);
910 skb
->len
+= upper_len
;
911 skb
->data_len
+= upper_len
;
912 skb
->truesize
+= upper_len
;
916 if (i
== rx_ring
->count
)
919 next_rxd
= IXGBE_RX_DESC_ADV(*rx_ring
, i
);
923 if (adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
)
924 rsc_count
= ixgbe_get_rsc_count(rx_desc
);
927 u32 nextp
= (staterr
& IXGBE_RXDADV_NEXTP_MASK
) >>
928 IXGBE_RXDADV_NEXTP_SHIFT
;
929 next_buffer
= &rx_ring
->rx_buffer_info
[nextp
];
931 next_buffer
= &rx_ring
->rx_buffer_info
[i
];
934 if (staterr
& IXGBE_RXD_STAT_EOP
) {
936 skb
= ixgbe_transform_rsc_queue(skb
, &(rx_ring
->rsc_count
));
937 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) {
938 if (IXGBE_RSC_CB(skb
)->dma
) {
939 pci_unmap_single(pdev
, IXGBE_RSC_CB(skb
)->dma
,
942 IXGBE_RSC_CB(skb
)->dma
= 0;
944 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
)
945 rx_ring
->rsc_count
+= skb_shinfo(skb
)->nr_frags
;
947 rx_ring
->rsc_count
++;
948 rx_ring
->rsc_flush
++;
950 rx_ring
->stats
.packets
++;
951 rx_ring
->stats
.bytes
+= skb
->len
;
953 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
954 rx_buffer_info
->skb
= next_buffer
->skb
;
955 rx_buffer_info
->dma
= next_buffer
->dma
;
956 next_buffer
->skb
= skb
;
957 next_buffer
->dma
= 0;
959 skb
->next
= next_buffer
->skb
;
960 skb
->next
->prev
= skb
;
962 rx_ring
->non_eop_descs
++;
966 if (staterr
& IXGBE_RXDADV_ERR_FRAME_ERR_MASK
) {
967 dev_kfree_skb_irq(skb
);
971 ixgbe_rx_checksum(adapter
, rx_desc
, skb
);
973 /* probably a little skewed due to removing CRC */
974 total_rx_bytes
+= skb
->len
;
977 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
979 /* if ddp, not passing to ULD unless for FCP_RSP or error */
980 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
981 ddp_bytes
= ixgbe_fcoe_ddp(adapter
, rx_desc
, skb
);
985 #endif /* IXGBE_FCOE */
986 ixgbe_receive_skb(q_vector
, skb
, staterr
, rx_ring
, rx_desc
);
989 rx_desc
->wb
.upper
.status_error
= 0;
991 /* return some buffers to hardware, one at a time is too slow */
992 if (cleaned_count
>= IXGBE_RX_BUFFER_WRITE
) {
993 ixgbe_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
997 /* use prefetched values */
999 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
1001 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1004 rx_ring
->next_to_clean
= i
;
1005 cleaned_count
= IXGBE_DESC_UNUSED(rx_ring
);
1008 ixgbe_alloc_rx_buffers(adapter
, rx_ring
, cleaned_count
);
1011 /* include DDPed FCoE data */
1012 if (ddp_bytes
> 0) {
1015 mss
= adapter
->netdev
->mtu
- sizeof(struct fcoe_hdr
) -
1016 sizeof(struct fc_frame_header
) -
1017 sizeof(struct fcoe_crc_eof
);
1020 total_rx_bytes
+= ddp_bytes
;
1021 total_rx_packets
+= DIV_ROUND_UP(ddp_bytes
, mss
);
1023 #endif /* IXGBE_FCOE */
1025 rx_ring
->total_packets
+= total_rx_packets
;
1026 rx_ring
->total_bytes
+= total_rx_bytes
;
1027 netdev
->stats
.rx_bytes
+= total_rx_bytes
;
1028 netdev
->stats
.rx_packets
+= total_rx_packets
;
1033 static int ixgbe_clean_rxonly(struct napi_struct
*, int);
1035 * ixgbe_configure_msix - Configure MSI-X hardware
1036 * @adapter: board private structure
1038 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1041 static void ixgbe_configure_msix(struct ixgbe_adapter
*adapter
)
1043 struct ixgbe_q_vector
*q_vector
;
1044 int i
, j
, q_vectors
, v_idx
, r_idx
;
1047 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1050 * Populate the IVAR table and set the ITR values to the
1051 * corresponding register.
1053 for (v_idx
= 0; v_idx
< q_vectors
; v_idx
++) {
1054 q_vector
= adapter
->q_vector
[v_idx
];
1055 /* XXX for_each_set_bit(...) */
1056 r_idx
= find_first_bit(q_vector
->rxr_idx
,
1057 adapter
->num_rx_queues
);
1059 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1060 j
= adapter
->rx_ring
[r_idx
]->reg_idx
;
1061 ixgbe_set_ivar(adapter
, 0, j
, v_idx
);
1062 r_idx
= find_next_bit(q_vector
->rxr_idx
,
1063 adapter
->num_rx_queues
,
1066 r_idx
= find_first_bit(q_vector
->txr_idx
,
1067 adapter
->num_tx_queues
);
1069 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1070 j
= adapter
->tx_ring
[r_idx
]->reg_idx
;
1071 ixgbe_set_ivar(adapter
, 1, j
, v_idx
);
1072 r_idx
= find_next_bit(q_vector
->txr_idx
,
1073 adapter
->num_tx_queues
,
1077 if (q_vector
->txr_count
&& !q_vector
->rxr_count
)
1079 q_vector
->eitr
= adapter
->tx_eitr_param
;
1080 else if (q_vector
->rxr_count
)
1082 q_vector
->eitr
= adapter
->rx_eitr_param
;
1084 ixgbe_write_eitr(q_vector
);
1087 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
1088 ixgbe_set_ivar(adapter
, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX
,
1090 else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
)
1091 ixgbe_set_ivar(adapter
, -1, 1, v_idx
);
1092 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITR(v_idx
), 1950);
1094 /* set up to autoclear timer, and the vectors */
1095 mask
= IXGBE_EIMS_ENABLE_MASK
;
1096 if (adapter
->num_vfs
)
1097 mask
&= ~(IXGBE_EIMS_OTHER
|
1098 IXGBE_EIMS_MAILBOX
|
1101 mask
&= ~(IXGBE_EIMS_OTHER
| IXGBE_EIMS_LSC
);
1102 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIAC
, mask
);
1105 enum latency_range
{
1109 latency_invalid
= 255
1113 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1114 * @adapter: pointer to adapter
1115 * @eitr: eitr setting (ints per sec) to give last timeslice
1116 * @itr_setting: current throttle rate in ints/second
1117 * @packets: the number of packets during this measurement interval
1118 * @bytes: the number of bytes during this measurement interval
1120 * Stores a new ITR value based on packets and byte
1121 * counts during the last interrupt. The advantage of per interrupt
1122 * computation is faster updates and more accurate ITR for the current
1123 * traffic pattern. Constants in this function were computed
1124 * based on theoretical maximum wire speed and thresholds were set based
1125 * on testing data as well as attempting to minimize response time
1126 * while increasing bulk throughput.
1127 * this functionality is controlled by the InterruptThrottleRate module
1128 * parameter (see ixgbe_param.c)
1130 static u8
ixgbe_update_itr(struct ixgbe_adapter
*adapter
,
1131 u32 eitr
, u8 itr_setting
,
1132 int packets
, int bytes
)
1134 unsigned int retval
= itr_setting
;
1139 goto update_itr_done
;
1142 /* simple throttlerate management
1143 * 0-20MB/s lowest (100000 ints/s)
1144 * 20-100MB/s low (20000 ints/s)
1145 * 100-1249MB/s bulk (8000 ints/s)
1147 /* what was last interrupt timeslice? */
1148 timepassed_us
= 1000000/eitr
;
1149 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
1151 switch (itr_setting
) {
1152 case lowest_latency
:
1153 if (bytes_perint
> adapter
->eitr_low
)
1154 retval
= low_latency
;
1157 if (bytes_perint
> adapter
->eitr_high
)
1158 retval
= bulk_latency
;
1159 else if (bytes_perint
<= adapter
->eitr_low
)
1160 retval
= lowest_latency
;
1163 if (bytes_perint
<= adapter
->eitr_high
)
1164 retval
= low_latency
;
1173 * ixgbe_write_eitr - write EITR register in hardware specific way
1174 * @q_vector: structure containing interrupt and ring information
1176 * This function is made to be called by ethtool and by the driver
1177 * when it needs to update EITR registers at runtime. Hardware
1178 * specific quirks/differences are taken care of here.
1180 void ixgbe_write_eitr(struct ixgbe_q_vector
*q_vector
)
1182 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1183 struct ixgbe_hw
*hw
= &adapter
->hw
;
1184 int v_idx
= q_vector
->v_idx
;
1185 u32 itr_reg
= EITR_INTS_PER_SEC_TO_REG(q_vector
->eitr
);
1187 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1188 /* must write high and low 16 bits to reset counter */
1189 itr_reg
|= (itr_reg
<< 16);
1190 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
1192 * set the WDIS bit to not clear the timer bits and cause an
1193 * immediate assertion of the interrupt
1195 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
1197 IXGBE_WRITE_REG(hw
, IXGBE_EITR(v_idx
), itr_reg
);
1200 static void ixgbe_set_itr_msix(struct ixgbe_q_vector
*q_vector
)
1202 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1204 u8 current_itr
, ret_itr
;
1206 struct ixgbe_ring
*rx_ring
, *tx_ring
;
1208 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1209 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1210 tx_ring
= adapter
->tx_ring
[r_idx
];
1211 ret_itr
= ixgbe_update_itr(adapter
, q_vector
->eitr
,
1213 tx_ring
->total_packets
,
1214 tx_ring
->total_bytes
);
1215 /* if the result for this queue would decrease interrupt
1216 * rate for this vector then use that result */
1217 q_vector
->tx_itr
= ((q_vector
->tx_itr
> ret_itr
) ?
1218 q_vector
->tx_itr
- 1 : ret_itr
);
1219 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1223 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1224 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1225 rx_ring
= adapter
->rx_ring
[r_idx
];
1226 ret_itr
= ixgbe_update_itr(adapter
, q_vector
->eitr
,
1228 rx_ring
->total_packets
,
1229 rx_ring
->total_bytes
);
1230 /* if the result for this queue would decrease interrupt
1231 * rate for this vector then use that result */
1232 q_vector
->rx_itr
= ((q_vector
->rx_itr
> ret_itr
) ?
1233 q_vector
->rx_itr
- 1 : ret_itr
);
1234 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1238 current_itr
= max(q_vector
->rx_itr
, q_vector
->tx_itr
);
1240 switch (current_itr
) {
1241 /* counts and packets in update_itr are dependent on these numbers */
1242 case lowest_latency
:
1246 new_itr
= 20000; /* aka hwitr = ~200 */
1254 if (new_itr
!= q_vector
->eitr
) {
1255 /* do an exponential smoothing */
1256 new_itr
= ((q_vector
->eitr
* 90)/100) + ((new_itr
* 10)/100);
1258 /* save the algorithm value here, not the smoothed one */
1259 q_vector
->eitr
= new_itr
;
1261 ixgbe_write_eitr(q_vector
);
1267 static void ixgbe_check_fan_failure(struct ixgbe_adapter
*adapter
, u32 eicr
)
1269 struct ixgbe_hw
*hw
= &adapter
->hw
;
1271 if ((adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) &&
1272 (eicr
& IXGBE_EICR_GPI_SDP1
)) {
1273 DPRINTK(PROBE
, CRIT
, "Fan has stopped, replace the adapter\n");
1274 /* write to clear the interrupt */
1275 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1
);
1279 static void ixgbe_check_sfp_event(struct ixgbe_adapter
*adapter
, u32 eicr
)
1281 struct ixgbe_hw
*hw
= &adapter
->hw
;
1283 if (eicr
& IXGBE_EICR_GPI_SDP1
) {
1284 /* Clear the interrupt */
1285 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1
);
1286 schedule_work(&adapter
->multispeed_fiber_task
);
1287 } else if (eicr
& IXGBE_EICR_GPI_SDP2
) {
1288 /* Clear the interrupt */
1289 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP2
);
1290 schedule_work(&adapter
->sfp_config_module_task
);
1292 /* Interrupt isn't for us... */
1297 static void ixgbe_check_lsc(struct ixgbe_adapter
*adapter
)
1299 struct ixgbe_hw
*hw
= &adapter
->hw
;
1302 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
1303 adapter
->link_check_timeout
= jiffies
;
1304 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
1305 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_EIMC_LSC
);
1306 IXGBE_WRITE_FLUSH(hw
);
1307 schedule_work(&adapter
->watchdog_task
);
1311 static irqreturn_t
ixgbe_msix_lsc(int irq
, void *data
)
1313 struct net_device
*netdev
= data
;
1314 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
1315 struct ixgbe_hw
*hw
= &adapter
->hw
;
1319 * Workaround for Silicon errata. Use clear-by-write instead
1320 * of clear-by-read. Reading with EICS will return the
1321 * interrupt causes without clearing, which later be done
1322 * with the write to EICR.
1324 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICS
);
1325 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, eicr
);
1327 if (eicr
& IXGBE_EICR_LSC
)
1328 ixgbe_check_lsc(adapter
);
1330 if (eicr
& IXGBE_EICR_MAILBOX
)
1331 ixgbe_msg_task(adapter
);
1333 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
1334 ixgbe_check_fan_failure(adapter
, eicr
);
1336 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
1337 ixgbe_check_sfp_event(adapter
, eicr
);
1339 /* Handle Flow Director Full threshold interrupt */
1340 if (eicr
& IXGBE_EICR_FLOW_DIR
) {
1342 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_FLOW_DIR
);
1343 /* Disable transmits before FDIR Re-initialization */
1344 netif_tx_stop_all_queues(netdev
);
1345 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1346 struct ixgbe_ring
*tx_ring
=
1347 adapter
->tx_ring
[i
];
1348 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE
,
1349 &tx_ring
->reinit_state
))
1350 schedule_work(&adapter
->fdir_reinit_task
);
1354 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1355 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMS_OTHER
);
1360 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter
*adapter
,
1365 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1366 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
1367 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS
, mask
);
1369 mask
= (qmask
& 0xFFFFFFFF);
1370 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS_EX(0), mask
);
1371 mask
= (qmask
>> 32);
1372 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS_EX(1), mask
);
1374 /* skip the flush */
1377 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter
*adapter
,
1382 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1383 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
1384 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, mask
);
1386 mask
= (qmask
& 0xFFFFFFFF);
1387 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(0), mask
);
1388 mask
= (qmask
>> 32);
1389 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(1), mask
);
1391 /* skip the flush */
1394 static irqreturn_t
ixgbe_msix_clean_tx(int irq
, void *data
)
1396 struct ixgbe_q_vector
*q_vector
= data
;
1397 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1398 struct ixgbe_ring
*tx_ring
;
1401 if (!q_vector
->txr_count
)
1404 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1405 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1406 tx_ring
= adapter
->tx_ring
[r_idx
];
1407 tx_ring
->total_bytes
= 0;
1408 tx_ring
->total_packets
= 0;
1409 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1413 /* EIAM disabled interrupts (on this vector) for us */
1414 napi_schedule(&q_vector
->napi
);
1420 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1422 * @data: pointer to our q_vector struct for this interrupt vector
1424 static irqreturn_t
ixgbe_msix_clean_rx(int irq
, void *data
)
1426 struct ixgbe_q_vector
*q_vector
= data
;
1427 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1428 struct ixgbe_ring
*rx_ring
;
1432 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1433 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1434 rx_ring
= adapter
->rx_ring
[r_idx
];
1435 rx_ring
->total_bytes
= 0;
1436 rx_ring
->total_packets
= 0;
1437 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1441 if (!q_vector
->rxr_count
)
1444 /* disable interrupts on this vector only */
1445 /* EIAM disabled interrupts (on this vector) for us */
1446 napi_schedule(&q_vector
->napi
);
1451 static irqreturn_t
ixgbe_msix_clean_many(int irq
, void *data
)
1453 struct ixgbe_q_vector
*q_vector
= data
;
1454 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1455 struct ixgbe_ring
*ring
;
1459 if (!q_vector
->txr_count
&& !q_vector
->rxr_count
)
1462 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1463 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1464 ring
= adapter
->tx_ring
[r_idx
];
1465 ring
->total_bytes
= 0;
1466 ring
->total_packets
= 0;
1467 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1471 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1472 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1473 ring
= adapter
->rx_ring
[r_idx
];
1474 ring
->total_bytes
= 0;
1475 ring
->total_packets
= 0;
1476 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1480 /* EIAM disabled interrupts (on this vector) for us */
1481 napi_schedule(&q_vector
->napi
);
1487 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1488 * @napi: napi struct with our devices info in it
1489 * @budget: amount of work driver is allowed to do this pass, in packets
1491 * This function is optimized for cleaning one queue only on a single
1494 static int ixgbe_clean_rxonly(struct napi_struct
*napi
, int budget
)
1496 struct ixgbe_q_vector
*q_vector
=
1497 container_of(napi
, struct ixgbe_q_vector
, napi
);
1498 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1499 struct ixgbe_ring
*rx_ring
= NULL
;
1503 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1504 rx_ring
= adapter
->rx_ring
[r_idx
];
1505 #ifdef CONFIG_IXGBE_DCA
1506 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1507 ixgbe_update_rx_dca(adapter
, rx_ring
);
1510 ixgbe_clean_rx_irq(q_vector
, rx_ring
, &work_done
, budget
);
1512 /* If all Rx work done, exit the polling mode */
1513 if (work_done
< budget
) {
1514 napi_complete(napi
);
1515 if (adapter
->rx_itr_setting
& 1)
1516 ixgbe_set_itr_msix(q_vector
);
1517 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1518 ixgbe_irq_enable_queues(adapter
,
1519 ((u64
)1 << q_vector
->v_idx
));
1526 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
1527 * @napi: napi struct with our devices info in it
1528 * @budget: amount of work driver is allowed to do this pass, in packets
1530 * This function will clean more than one rx queue associated with a
1533 static int ixgbe_clean_rxtx_many(struct napi_struct
*napi
, int budget
)
1535 struct ixgbe_q_vector
*q_vector
=
1536 container_of(napi
, struct ixgbe_q_vector
, napi
);
1537 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1538 struct ixgbe_ring
*ring
= NULL
;
1539 int work_done
= 0, i
;
1541 bool tx_clean_complete
= true;
1543 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1544 for (i
= 0; i
< q_vector
->txr_count
; i
++) {
1545 ring
= adapter
->tx_ring
[r_idx
];
1546 #ifdef CONFIG_IXGBE_DCA
1547 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1548 ixgbe_update_tx_dca(adapter
, ring
);
1550 tx_clean_complete
&= ixgbe_clean_tx_irq(q_vector
, ring
);
1551 r_idx
= find_next_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
,
1555 /* attempt to distribute budget to each queue fairly, but don't allow
1556 * the budget to go below 1 because we'll exit polling */
1557 budget
/= (q_vector
->rxr_count
?: 1);
1558 budget
= max(budget
, 1);
1559 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1560 for (i
= 0; i
< q_vector
->rxr_count
; i
++) {
1561 ring
= adapter
->rx_ring
[r_idx
];
1562 #ifdef CONFIG_IXGBE_DCA
1563 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1564 ixgbe_update_rx_dca(adapter
, ring
);
1566 ixgbe_clean_rx_irq(q_vector
, ring
, &work_done
, budget
);
1567 r_idx
= find_next_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
,
1571 r_idx
= find_first_bit(q_vector
->rxr_idx
, adapter
->num_rx_queues
);
1572 ring
= adapter
->rx_ring
[r_idx
];
1573 /* If all Rx work done, exit the polling mode */
1574 if (work_done
< budget
) {
1575 napi_complete(napi
);
1576 if (adapter
->rx_itr_setting
& 1)
1577 ixgbe_set_itr_msix(q_vector
);
1578 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1579 ixgbe_irq_enable_queues(adapter
,
1580 ((u64
)1 << q_vector
->v_idx
));
1588 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1589 * @napi: napi struct with our devices info in it
1590 * @budget: amount of work driver is allowed to do this pass, in packets
1592 * This function is optimized for cleaning one queue only on a single
1595 static int ixgbe_clean_txonly(struct napi_struct
*napi
, int budget
)
1597 struct ixgbe_q_vector
*q_vector
=
1598 container_of(napi
, struct ixgbe_q_vector
, napi
);
1599 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1600 struct ixgbe_ring
*tx_ring
= NULL
;
1604 r_idx
= find_first_bit(q_vector
->txr_idx
, adapter
->num_tx_queues
);
1605 tx_ring
= adapter
->tx_ring
[r_idx
];
1606 #ifdef CONFIG_IXGBE_DCA
1607 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1608 ixgbe_update_tx_dca(adapter
, tx_ring
);
1611 if (!ixgbe_clean_tx_irq(q_vector
, tx_ring
))
1614 /* If all Tx work done, exit the polling mode */
1615 if (work_done
< budget
) {
1616 napi_complete(napi
);
1617 if (adapter
->tx_itr_setting
& 1)
1618 ixgbe_set_itr_msix(q_vector
);
1619 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
1620 ixgbe_irq_enable_queues(adapter
, ((u64
)1 << q_vector
->v_idx
));
1626 static inline void map_vector_to_rxq(struct ixgbe_adapter
*a
, int v_idx
,
1629 struct ixgbe_q_vector
*q_vector
= a
->q_vector
[v_idx
];
1631 set_bit(r_idx
, q_vector
->rxr_idx
);
1632 q_vector
->rxr_count
++;
1635 static inline void map_vector_to_txq(struct ixgbe_adapter
*a
, int v_idx
,
1638 struct ixgbe_q_vector
*q_vector
= a
->q_vector
[v_idx
];
1640 set_bit(t_idx
, q_vector
->txr_idx
);
1641 q_vector
->txr_count
++;
1645 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
1646 * @adapter: board private structure to initialize
1647 * @vectors: allotted vector count for descriptor rings
1649 * This function maps descriptor rings to the queue-specific vectors
1650 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1651 * one vector per ring/queue, but on a constrained vector budget, we
1652 * group the rings as "efficiently" as possible. You would add new
1653 * mapping configurations in here.
1655 static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter
*adapter
,
1659 int rxr_idx
= 0, txr_idx
= 0;
1660 int rxr_remaining
= adapter
->num_rx_queues
;
1661 int txr_remaining
= adapter
->num_tx_queues
;
1666 /* No mapping required if MSI-X is disabled. */
1667 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
))
1671 * The ideal configuration...
1672 * We have enough vectors to map one per queue.
1674 if (vectors
== adapter
->num_rx_queues
+ adapter
->num_tx_queues
) {
1675 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
1676 map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
1678 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
1679 map_vector_to_txq(adapter
, v_start
, txr_idx
);
1685 * If we don't have enough vectors for a 1-to-1
1686 * mapping, we'll have to group them so there are
1687 * multiple queues per vector.
1689 /* Re-adjusting *qpv takes care of the remainder. */
1690 for (i
= v_start
; i
< vectors
; i
++) {
1691 rqpv
= DIV_ROUND_UP(rxr_remaining
, vectors
- i
);
1692 for (j
= 0; j
< rqpv
; j
++) {
1693 map_vector_to_rxq(adapter
, i
, rxr_idx
);
1698 for (i
= v_start
; i
< vectors
; i
++) {
1699 tqpv
= DIV_ROUND_UP(txr_remaining
, vectors
- i
);
1700 for (j
= 0; j
< tqpv
; j
++) {
1701 map_vector_to_txq(adapter
, i
, txr_idx
);
1712 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
1713 * @adapter: board private structure
1715 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
1716 * interrupts from the kernel.
1718 static int ixgbe_request_msix_irqs(struct ixgbe_adapter
*adapter
)
1720 struct net_device
*netdev
= adapter
->netdev
;
1721 irqreturn_t (*handler
)(int, void *);
1722 int i
, vector
, q_vectors
, err
;
1725 /* Decrement for Other and TCP Timer vectors */
1726 q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1728 /* Map the Tx/Rx rings to the vectors we were allotted. */
1729 err
= ixgbe_map_rings_to_vectors(adapter
, q_vectors
);
1733 #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
1734 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
1735 &ixgbe_msix_clean_many)
1736 for (vector
= 0; vector
< q_vectors
; vector
++) {
1737 handler
= SET_HANDLER(adapter
->q_vector
[vector
]);
1739 if(handler
== &ixgbe_msix_clean_rx
) {
1740 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1741 netdev
->name
, "rx", ri
++);
1743 else if(handler
== &ixgbe_msix_clean_tx
) {
1744 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1745 netdev
->name
, "tx", ti
++);
1748 sprintf(adapter
->name
[vector
], "%s-%s-%d",
1749 netdev
->name
, "TxRx", vector
);
1751 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1752 handler
, 0, adapter
->name
[vector
],
1753 adapter
->q_vector
[vector
]);
1756 "request_irq failed for MSIX interrupt "
1757 "Error: %d\n", err
);
1758 goto free_queue_irqs
;
1762 sprintf(adapter
->name
[vector
], "%s:lsc", netdev
->name
);
1763 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
1764 ixgbe_msix_lsc
, 0, adapter
->name
[vector
], netdev
);
1767 "request_irq for msix_lsc failed: %d\n", err
);
1768 goto free_queue_irqs
;
1774 for (i
= vector
- 1; i
>= 0; i
--)
1775 free_irq(adapter
->msix_entries
[--vector
].vector
,
1776 adapter
->q_vector
[i
]);
1777 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
1778 pci_disable_msix(adapter
->pdev
);
1779 kfree(adapter
->msix_entries
);
1780 adapter
->msix_entries
= NULL
;
1785 static void ixgbe_set_itr(struct ixgbe_adapter
*adapter
)
1787 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
1789 u32 new_itr
= q_vector
->eitr
;
1790 struct ixgbe_ring
*rx_ring
= adapter
->rx_ring
[0];
1791 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[0];
1793 q_vector
->tx_itr
= ixgbe_update_itr(adapter
, new_itr
,
1795 tx_ring
->total_packets
,
1796 tx_ring
->total_bytes
);
1797 q_vector
->rx_itr
= ixgbe_update_itr(adapter
, new_itr
,
1799 rx_ring
->total_packets
,
1800 rx_ring
->total_bytes
);
1802 current_itr
= max(q_vector
->rx_itr
, q_vector
->tx_itr
);
1804 switch (current_itr
) {
1805 /* counts and packets in update_itr are dependent on these numbers */
1806 case lowest_latency
:
1810 new_itr
= 20000; /* aka hwitr = ~200 */
1819 if (new_itr
!= q_vector
->eitr
) {
1820 /* do an exponential smoothing */
1821 new_itr
= ((q_vector
->eitr
* 90)/100) + ((new_itr
* 10)/100);
1823 /* save the algorithm value here, not the smoothed one */
1824 q_vector
->eitr
= new_itr
;
1826 ixgbe_write_eitr(q_vector
);
1833 * ixgbe_irq_enable - Enable default interrupt generation settings
1834 * @adapter: board private structure
1836 static inline void ixgbe_irq_enable(struct ixgbe_adapter
*adapter
)
1840 mask
= (IXGBE_EIMS_ENABLE_MASK
& ~IXGBE_EIMS_RTX_QUEUE
);
1841 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
)
1842 mask
|= IXGBE_EIMS_GPI_SDP1
;
1843 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
1844 mask
|= IXGBE_EIMS_ECC
;
1845 mask
|= IXGBE_EIMS_GPI_SDP1
;
1846 mask
|= IXGBE_EIMS_GPI_SDP2
;
1847 if (adapter
->num_vfs
)
1848 mask
|= IXGBE_EIMS_MAILBOX
;
1850 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
1851 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
1852 mask
|= IXGBE_EIMS_FLOW_DIR
;
1854 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS
, mask
);
1855 ixgbe_irq_enable_queues(adapter
, ~0);
1856 IXGBE_WRITE_FLUSH(&adapter
->hw
);
1858 if (adapter
->num_vfs
> 32) {
1859 u32 eitrsel
= (1 << (adapter
->num_vfs
- 32)) - 1;
1860 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITRSEL
, eitrsel
);
1865 * ixgbe_intr - legacy mode Interrupt Handler
1866 * @irq: interrupt number
1867 * @data: pointer to a network interface device structure
1869 static irqreturn_t
ixgbe_intr(int irq
, void *data
)
1871 struct net_device
*netdev
= data
;
1872 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
1873 struct ixgbe_hw
*hw
= &adapter
->hw
;
1874 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
1878 * Workaround for silicon errata. Mask the interrupts
1879 * before the read of EICR.
1881 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_IRQ_CLEAR_MASK
);
1883 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
1884 * therefore no explict interrupt disable is necessary */
1885 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICR
);
1887 /* shared interrupt alert!
1888 * make sure interrupts are enabled because the read will
1889 * have disabled interrupts due to EIAM */
1890 ixgbe_irq_enable(adapter
);
1891 return IRQ_NONE
; /* Not our interrupt */
1894 if (eicr
& IXGBE_EICR_LSC
)
1895 ixgbe_check_lsc(adapter
);
1897 if (hw
->mac
.type
== ixgbe_mac_82599EB
)
1898 ixgbe_check_sfp_event(adapter
, eicr
);
1900 ixgbe_check_fan_failure(adapter
, eicr
);
1902 if (napi_schedule_prep(&(q_vector
->napi
))) {
1903 adapter
->tx_ring
[0]->total_packets
= 0;
1904 adapter
->tx_ring
[0]->total_bytes
= 0;
1905 adapter
->rx_ring
[0]->total_packets
= 0;
1906 adapter
->rx_ring
[0]->total_bytes
= 0;
1907 /* would disable interrupts here but EIAM disabled it */
1908 __napi_schedule(&(q_vector
->napi
));
1914 static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter
*adapter
)
1916 int i
, q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
1918 for (i
= 0; i
< q_vectors
; i
++) {
1919 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[i
];
1920 bitmap_zero(q_vector
->rxr_idx
, MAX_RX_QUEUES
);
1921 bitmap_zero(q_vector
->txr_idx
, MAX_TX_QUEUES
);
1922 q_vector
->rxr_count
= 0;
1923 q_vector
->txr_count
= 0;
1928 * ixgbe_request_irq - initialize interrupts
1929 * @adapter: board private structure
1931 * Attempts to configure interrupts using the best available
1932 * capabilities of the hardware and kernel.
1934 static int ixgbe_request_irq(struct ixgbe_adapter
*adapter
)
1936 struct net_device
*netdev
= adapter
->netdev
;
1939 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
1940 err
= ixgbe_request_msix_irqs(adapter
);
1941 } else if (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
) {
1942 err
= request_irq(adapter
->pdev
->irq
, ixgbe_intr
, 0,
1943 netdev
->name
, netdev
);
1945 err
= request_irq(adapter
->pdev
->irq
, ixgbe_intr
, IRQF_SHARED
,
1946 netdev
->name
, netdev
);
1950 DPRINTK(PROBE
, ERR
, "request_irq failed, Error %d\n", err
);
1955 static void ixgbe_free_irq(struct ixgbe_adapter
*adapter
)
1957 struct net_device
*netdev
= adapter
->netdev
;
1959 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
1962 q_vectors
= adapter
->num_msix_vectors
;
1965 free_irq(adapter
->msix_entries
[i
].vector
, netdev
);
1968 for (; i
>= 0; i
--) {
1969 free_irq(adapter
->msix_entries
[i
].vector
,
1970 adapter
->q_vector
[i
]);
1973 ixgbe_reset_q_vectors(adapter
);
1975 free_irq(adapter
->pdev
->irq
, netdev
);
1980 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
1981 * @adapter: board private structure
1983 static inline void ixgbe_irq_disable(struct ixgbe_adapter
*adapter
)
1985 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
1986 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, ~0);
1988 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, 0xFFFF0000);
1989 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(0), ~0);
1990 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(1), ~0);
1991 if (adapter
->num_vfs
> 32)
1992 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITRSEL
, 0);
1994 IXGBE_WRITE_FLUSH(&adapter
->hw
);
1995 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
1997 for (i
= 0; i
< adapter
->num_msix_vectors
; i
++)
1998 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2000 synchronize_irq(adapter
->pdev
->irq
);
2005 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2008 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter
*adapter
)
2010 struct ixgbe_hw
*hw
= &adapter
->hw
;
2012 IXGBE_WRITE_REG(hw
, IXGBE_EITR(0),
2013 EITR_INTS_PER_SEC_TO_REG(adapter
->rx_eitr_param
));
2015 ixgbe_set_ivar(adapter
, 0, 0, 0);
2016 ixgbe_set_ivar(adapter
, 1, 0, 0);
2018 map_vector_to_rxq(adapter
, 0, 0);
2019 map_vector_to_txq(adapter
, 0, 0);
2021 DPRINTK(HW
, INFO
, "Legacy interrupt IVAR setup done\n");
2025 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
2026 * @adapter: board private structure
2028 * Configure the Tx unit of the MAC after a reset.
2030 static void ixgbe_configure_tx(struct ixgbe_adapter
*adapter
)
2033 struct ixgbe_hw
*hw
= &adapter
->hw
;
2034 u32 i
, j
, tdlen
, txctrl
;
2036 /* Setup the HW Tx Head and Tail descriptor pointers */
2037 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2038 struct ixgbe_ring
*ring
= adapter
->tx_ring
[i
];
2041 tdlen
= ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
2042 IXGBE_WRITE_REG(hw
, IXGBE_TDBAL(j
),
2043 (tdba
& DMA_BIT_MASK(32)));
2044 IXGBE_WRITE_REG(hw
, IXGBE_TDBAH(j
), (tdba
>> 32));
2045 IXGBE_WRITE_REG(hw
, IXGBE_TDLEN(j
), tdlen
);
2046 IXGBE_WRITE_REG(hw
, IXGBE_TDH(j
), 0);
2047 IXGBE_WRITE_REG(hw
, IXGBE_TDT(j
), 0);
2048 adapter
->tx_ring
[i
]->head
= IXGBE_TDH(j
);
2049 adapter
->tx_ring
[i
]->tail
= IXGBE_TDT(j
);
2051 * Disable Tx Head Writeback RO bit, since this hoses
2052 * bookkeeping if things aren't delivered in order.
2054 switch (hw
->mac
.type
) {
2055 case ixgbe_mac_82598EB
:
2056 txctrl
= IXGBE_READ_REG(hw
, IXGBE_DCA_TXCTRL(j
));
2058 case ixgbe_mac_82599EB
:
2060 txctrl
= IXGBE_READ_REG(hw
, IXGBE_DCA_TXCTRL_82599(j
));
2063 txctrl
&= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN
;
2064 switch (hw
->mac
.type
) {
2065 case ixgbe_mac_82598EB
:
2066 IXGBE_WRITE_REG(hw
, IXGBE_DCA_TXCTRL(j
), txctrl
);
2068 case ixgbe_mac_82599EB
:
2070 IXGBE_WRITE_REG(hw
, IXGBE_DCA_TXCTRL_82599(j
), txctrl
);
2075 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2079 /* disable the arbiter while setting MTQC */
2080 rttdcs
= IXGBE_READ_REG(hw
, IXGBE_RTTDCS
);
2081 rttdcs
|= IXGBE_RTTDCS_ARBDIS
;
2082 IXGBE_WRITE_REG(hw
, IXGBE_RTTDCS
, rttdcs
);
2084 /* set transmit pool layout */
2085 mask
= (IXGBE_FLAG_SRIOV_ENABLED
| IXGBE_FLAG_DCB_ENABLED
);
2086 switch (adapter
->flags
& mask
) {
2088 case (IXGBE_FLAG_SRIOV_ENABLED
):
2089 IXGBE_WRITE_REG(hw
, IXGBE_MTQC
,
2090 (IXGBE_MTQC_VT_ENA
| IXGBE_MTQC_64VF
));
2093 case (IXGBE_FLAG_DCB_ENABLED
):
2094 /* We enable 8 traffic classes, DCB only */
2095 IXGBE_WRITE_REG(hw
, IXGBE_MTQC
,
2096 (IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_8TC_8TQ
));
2100 IXGBE_WRITE_REG(hw
, IXGBE_MTQC
, IXGBE_MTQC_64Q_1PB
);
2104 /* re-eable the arbiter */
2105 rttdcs
&= ~IXGBE_RTTDCS_ARBDIS
;
2106 IXGBE_WRITE_REG(hw
, IXGBE_RTTDCS
, rttdcs
);
2110 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
2112 static void ixgbe_configure_srrctl(struct ixgbe_adapter
*adapter
,
2113 struct ixgbe_ring
*rx_ring
)
2117 struct ixgbe_ring_feature
*feature
= adapter
->ring_feature
;
2119 index
= rx_ring
->reg_idx
;
2120 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
2122 mask
= (unsigned long) feature
[RING_F_RSS
].mask
;
2123 index
= index
& mask
;
2125 srrctl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_SRRCTL(index
));
2127 srrctl
&= ~IXGBE_SRRCTL_BSIZEHDR_MASK
;
2128 srrctl
&= ~IXGBE_SRRCTL_BSIZEPKT_MASK
;
2130 srrctl
|= (IXGBE_RX_HDR_SIZE
<< IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT
) &
2131 IXGBE_SRRCTL_BSIZEHDR_MASK
;
2133 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
2134 #if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2135 srrctl
|= IXGBE_MAX_RXBUFFER
>> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
2137 srrctl
|= (PAGE_SIZE
/ 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
2139 srrctl
|= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
2141 srrctl
|= ALIGN(rx_ring
->rx_buf_len
, 1024) >>
2142 IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
2143 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
2146 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_SRRCTL(index
), srrctl
);
2149 static u32
ixgbe_setup_mrqc(struct ixgbe_adapter
*adapter
)
2154 if (!(adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
))
2157 mask
= adapter
->flags
& (IXGBE_FLAG_RSS_ENABLED
2158 #ifdef CONFIG_IXGBE_DCB
2159 | IXGBE_FLAG_DCB_ENABLED
2161 | IXGBE_FLAG_SRIOV_ENABLED
2165 case (IXGBE_FLAG_RSS_ENABLED
):
2166 mrqc
= IXGBE_MRQC_RSSEN
;
2168 case (IXGBE_FLAG_SRIOV_ENABLED
):
2169 mrqc
= IXGBE_MRQC_VMDQEN
;
2171 #ifdef CONFIG_IXGBE_DCB
2172 case (IXGBE_FLAG_DCB_ENABLED
):
2173 mrqc
= IXGBE_MRQC_RT8TCEN
;
2175 #endif /* CONFIG_IXGBE_DCB */
2184 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2185 * @adapter: address of board private structure
2186 * @index: index of ring to set
2188 static void ixgbe_configure_rscctl(struct ixgbe_adapter
*adapter
, int index
)
2190 struct ixgbe_ring
*rx_ring
;
2191 struct ixgbe_hw
*hw
= &adapter
->hw
;
2196 rx_ring
= adapter
->rx_ring
[index
];
2197 j
= rx_ring
->reg_idx
;
2198 rx_buf_len
= rx_ring
->rx_buf_len
;
2199 rscctrl
= IXGBE_READ_REG(hw
, IXGBE_RSCCTL(j
));
2200 rscctrl
|= IXGBE_RSCCTL_RSCEN
;
2202 * we must limit the number of descriptors so that the
2203 * total size of max desc * buf_len is not greater
2206 if (rx_ring
->flags
& IXGBE_RING_RX_PS_ENABLED
) {
2207 #if (MAX_SKB_FRAGS > 16)
2208 rscctrl
|= IXGBE_RSCCTL_MAXDESC_16
;
2209 #elif (MAX_SKB_FRAGS > 8)
2210 rscctrl
|= IXGBE_RSCCTL_MAXDESC_8
;
2211 #elif (MAX_SKB_FRAGS > 4)
2212 rscctrl
|= IXGBE_RSCCTL_MAXDESC_4
;
2214 rscctrl
|= IXGBE_RSCCTL_MAXDESC_1
;
2217 if (rx_buf_len
< IXGBE_RXBUFFER_4096
)
2218 rscctrl
|= IXGBE_RSCCTL_MAXDESC_16
;
2219 else if (rx_buf_len
< IXGBE_RXBUFFER_8192
)
2220 rscctrl
|= IXGBE_RSCCTL_MAXDESC_8
;
2222 rscctrl
|= IXGBE_RSCCTL_MAXDESC_4
;
2224 IXGBE_WRITE_REG(hw
, IXGBE_RSCCTL(j
), rscctrl
);
2228 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
2229 * @adapter: board private structure
2231 * Configure the Rx unit of the MAC after a reset.
2233 static void ixgbe_configure_rx(struct ixgbe_adapter
*adapter
)
2236 struct ixgbe_hw
*hw
= &adapter
->hw
;
2237 struct ixgbe_ring
*rx_ring
;
2238 struct net_device
*netdev
= adapter
->netdev
;
2239 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2241 u32 rdlen
, rxctrl
, rxcsum
;
2242 static const u32 seed
[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
2243 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2244 0x6A3E67EA, 0x14364D17, 0x3BED200D};
2246 u32 reta
= 0, mrqc
= 0;
2250 /* Decide whether to use packet split mode or not */
2251 /* Do not use packet split if we're in SR-IOV Mode */
2252 if (!adapter
->num_vfs
)
2253 adapter
->flags
|= IXGBE_FLAG_RX_PS_ENABLED
;
2255 /* Set the RX buffer length according to the mode */
2256 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
) {
2257 rx_buf_len
= IXGBE_RX_HDR_SIZE
;
2258 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2259 /* PSRTYPE must be initialized in 82599 */
2260 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
2261 IXGBE_PSRTYPE_UDPHDR
|
2262 IXGBE_PSRTYPE_IPV4HDR
|
2263 IXGBE_PSRTYPE_IPV6HDR
|
2264 IXGBE_PSRTYPE_L2HDR
;
2266 IXGBE_PSRTYPE(adapter
->num_vfs
),
2270 if (!(adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) &&
2271 (netdev
->mtu
<= ETH_DATA_LEN
))
2272 rx_buf_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
2274 rx_buf_len
= ALIGN(max_frame
, 1024);
2277 fctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_FCTRL
);
2278 fctrl
|= IXGBE_FCTRL_BAM
;
2279 fctrl
|= IXGBE_FCTRL_DPF
; /* discard pause frames when FC enabled */
2280 fctrl
|= IXGBE_FCTRL_PMCF
;
2281 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_FCTRL
, fctrl
);
2283 hlreg0
= IXGBE_READ_REG(hw
, IXGBE_HLREG0
);
2284 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
2285 hlreg0
&= ~IXGBE_HLREG0_JUMBOEN
;
2287 hlreg0
|= IXGBE_HLREG0_JUMBOEN
;
2289 if (netdev
->features
& NETIF_F_FCOE_MTU
)
2290 hlreg0
|= IXGBE_HLREG0_JUMBOEN
;
2292 IXGBE_WRITE_REG(hw
, IXGBE_HLREG0
, hlreg0
);
2294 rdlen
= adapter
->rx_ring
[0]->count
* sizeof(union ixgbe_adv_rx_desc
);
2295 /* disable receives while setting up the descriptors */
2296 rxctrl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
2297 IXGBE_WRITE_REG(hw
, IXGBE_RXCTRL
, rxctrl
& ~IXGBE_RXCTRL_RXEN
);
2300 * Setup the HW Rx Head and Tail Descriptor Pointers and
2301 * the Base and Length of the Rx Descriptor Ring
2303 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2304 rx_ring
= adapter
->rx_ring
[i
];
2305 rdba
= rx_ring
->dma
;
2306 j
= rx_ring
->reg_idx
;
2307 IXGBE_WRITE_REG(hw
, IXGBE_RDBAL(j
), (rdba
& DMA_BIT_MASK(32)));
2308 IXGBE_WRITE_REG(hw
, IXGBE_RDBAH(j
), (rdba
>> 32));
2309 IXGBE_WRITE_REG(hw
, IXGBE_RDLEN(j
), rdlen
);
2310 IXGBE_WRITE_REG(hw
, IXGBE_RDH(j
), 0);
2311 IXGBE_WRITE_REG(hw
, IXGBE_RDT(j
), 0);
2312 rx_ring
->head
= IXGBE_RDH(j
);
2313 rx_ring
->tail
= IXGBE_RDT(j
);
2314 rx_ring
->rx_buf_len
= rx_buf_len
;
2316 if (adapter
->flags
& IXGBE_FLAG_RX_PS_ENABLED
)
2317 rx_ring
->flags
|= IXGBE_RING_RX_PS_ENABLED
;
2319 rx_ring
->flags
&= ~IXGBE_RING_RX_PS_ENABLED
;
2322 if (netdev
->features
& NETIF_F_FCOE_MTU
) {
2323 struct ixgbe_ring_feature
*f
;
2324 f
= &adapter
->ring_feature
[RING_F_FCOE
];
2325 if ((i
>= f
->mask
) && (i
< f
->mask
+ f
->indices
)) {
2326 rx_ring
->flags
&= ~IXGBE_RING_RX_PS_ENABLED
;
2327 if (rx_buf_len
< IXGBE_FCOE_JUMBO_FRAME_SIZE
)
2328 rx_ring
->rx_buf_len
=
2329 IXGBE_FCOE_JUMBO_FRAME_SIZE
;
2333 #endif /* IXGBE_FCOE */
2334 ixgbe_configure_srrctl(adapter
, rx_ring
);
2337 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
2339 * For VMDq support of different descriptor types or
2340 * buffer sizes through the use of multiple SRRCTL
2341 * registers, RDRXCTL.MVMEN must be set to 1
2343 * also, the manual doesn't mention it clearly but DCA hints
2344 * will only use queue 0's tags unless this bit is set. Side
2345 * effects of setting this bit are only that SRRCTL must be
2346 * fully programmed [0..15]
2348 rdrxctl
= IXGBE_READ_REG(hw
, IXGBE_RDRXCTL
);
2349 rdrxctl
|= IXGBE_RDRXCTL_MVMEN
;
2350 IXGBE_WRITE_REG(hw
, IXGBE_RDRXCTL
, rdrxctl
);
2353 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
2355 u32 reg_offset
, vf_shift
;
2356 u32 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VT_CTL
);
2357 vt_reg_bits
= IXGBE_VMD_CTL_VMDQ_EN
2358 | IXGBE_VT_CTL_REPLEN
;
2359 vt_reg_bits
|= (adapter
->num_vfs
<<
2360 IXGBE_VT_CTL_POOL_SHIFT
);
2361 IXGBE_WRITE_REG(hw
, IXGBE_VT_CTL
, vmdctl
| vt_reg_bits
);
2362 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, 0);
2364 vf_shift
= adapter
->num_vfs
% 32;
2365 reg_offset
= adapter
->num_vfs
/ 32;
2366 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(0), 0);
2367 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(1), 0);
2368 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(0), 0);
2369 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(1), 0);
2370 /* Enable only the PF's pool for Tx/Rx */
2371 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
), (1 << vf_shift
));
2372 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
), (1 << vf_shift
));
2373 IXGBE_WRITE_REG(hw
, IXGBE_PFDTXGSWC
, IXGBE_PFDTXGSWC_VT_LBEN
);
2374 ixgbe_set_vmolr(hw
, adapter
->num_vfs
);
2377 /* Program MRQC for the distribution of queues */
2378 mrqc
= ixgbe_setup_mrqc(adapter
);
2380 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
2381 /* Fill out redirection table */
2382 for (i
= 0, j
= 0; i
< 128; i
++, j
++) {
2383 if (j
== adapter
->ring_feature
[RING_F_RSS
].indices
)
2385 /* reta = 4-byte sliding window of
2386 * 0x00..(indices-1)(indices-1)00..etc. */
2387 reta
= (reta
<< 8) | (j
* 0x11);
2389 IXGBE_WRITE_REG(hw
, IXGBE_RETA(i
>> 2), reta
);
2392 /* Fill out hash function seeds */
2393 for (i
= 0; i
< 10; i
++)
2394 IXGBE_WRITE_REG(hw
, IXGBE_RSSRK(i
), seed
[i
]);
2396 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
2397 mrqc
|= IXGBE_MRQC_RSSEN
;
2398 /* Perform hash on these packet types */
2399 mrqc
|= IXGBE_MRQC_RSS_FIELD_IPV4
2400 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2401 | IXGBE_MRQC_RSS_FIELD_IPV4_UDP
2402 | IXGBE_MRQC_RSS_FIELD_IPV6
2403 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP
2404 | IXGBE_MRQC_RSS_FIELD_IPV6_UDP
;
2406 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, mrqc
);
2408 if (adapter
->num_vfs
) {
2411 /* Map PF MAC address in RAR Entry 0 to first pool
2413 hw
->mac
.ops
.set_vmdq(hw
, 0, adapter
->num_vfs
);
2415 /* Set up VF register offsets for selected VT Mode, i.e.
2416 * 64 VFs for SR-IOV */
2417 reg
= IXGBE_READ_REG(hw
, IXGBE_GCR_EXT
);
2418 reg
|= IXGBE_GCR_EXT_SRIOV
;
2419 IXGBE_WRITE_REG(hw
, IXGBE_GCR_EXT
, reg
);
2422 rxcsum
= IXGBE_READ_REG(hw
, IXGBE_RXCSUM
);
2424 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
||
2425 adapter
->flags
& IXGBE_FLAG_RX_CSUM_ENABLED
) {
2426 /* Disable indicating checksum in descriptor, enables
2428 rxcsum
|= IXGBE_RXCSUM_PCSD
;
2430 if (!(rxcsum
& IXGBE_RXCSUM_PCSD
)) {
2431 /* Enable IPv4 payload checksum for UDP fragments
2432 * if PCSD is not set */
2433 rxcsum
|= IXGBE_RXCSUM_IPPCSE
;
2436 IXGBE_WRITE_REG(hw
, IXGBE_RXCSUM
, rxcsum
);
2438 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2439 rdrxctl
= IXGBE_READ_REG(hw
, IXGBE_RDRXCTL
);
2440 rdrxctl
|= IXGBE_RDRXCTL_CRCSTRIP
;
2441 rdrxctl
&= ~IXGBE_RDRXCTL_RSCFRSTSIZE
;
2442 IXGBE_WRITE_REG(hw
, IXGBE_RDRXCTL
, rdrxctl
);
2445 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) {
2446 /* Enable 82599 HW-RSC */
2447 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2448 ixgbe_configure_rscctl(adapter
, i
);
2450 /* Disable RSC for ACK packets */
2451 IXGBE_WRITE_REG(hw
, IXGBE_RSCDBU
,
2452 (IXGBE_RSCDBU_RSCACKDIS
| IXGBE_READ_REG(hw
, IXGBE_RSCDBU
)));
2456 static void ixgbe_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
2458 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2459 struct ixgbe_hw
*hw
= &adapter
->hw
;
2460 int pool_ndx
= adapter
->num_vfs
;
2462 /* add VID to filter table */
2463 hw
->mac
.ops
.set_vfta(&adapter
->hw
, vid
, pool_ndx
, true);
2466 static void ixgbe_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
2468 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2469 struct ixgbe_hw
*hw
= &adapter
->hw
;
2470 int pool_ndx
= adapter
->num_vfs
;
2472 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2473 ixgbe_irq_disable(adapter
);
2475 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
2477 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2478 ixgbe_irq_enable(adapter
);
2480 /* remove VID from filter table */
2481 hw
->mac
.ops
.set_vfta(&adapter
->hw
, vid
, pool_ndx
, false);
2484 static void ixgbe_vlan_rx_register(struct net_device
*netdev
,
2485 struct vlan_group
*grp
)
2487 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2491 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2492 ixgbe_irq_disable(adapter
);
2493 adapter
->vlgrp
= grp
;
2496 * For a DCB driver, always enable VLAN tag stripping so we can
2497 * still receive traffic from a DCB-enabled host even if we're
2500 ctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_VLNCTRL
);
2502 /* Disable CFI check */
2503 ctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2505 /* enable VLAN tag stripping */
2506 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
2507 ctrl
|= IXGBE_VLNCTRL_VME
;
2508 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
2509 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2511 j
= adapter
->rx_ring
[i
]->reg_idx
;
2512 ctrl
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_RXDCTL(j
));
2513 ctrl
|= IXGBE_RXDCTL_VME
;
2514 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_RXDCTL(j
), ctrl
);
2518 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_VLNCTRL
, ctrl
);
2520 ixgbe_vlan_rx_add_vid(netdev
, 0);
2522 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2523 ixgbe_irq_enable(adapter
);
2526 static void ixgbe_restore_vlan(struct ixgbe_adapter
*adapter
)
2528 ixgbe_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
2530 if (adapter
->vlgrp
) {
2532 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
2533 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
2535 ixgbe_vlan_rx_add_vid(adapter
->netdev
, vid
);
2540 static u8
*ixgbe_addr_list_itr(struct ixgbe_hw
*hw
, u8
**mc_addr_ptr
, u32
*vmdq
)
2542 struct dev_mc_list
*mc_ptr
;
2543 u8
*addr
= *mc_addr_ptr
;
2546 mc_ptr
= container_of(addr
, struct dev_mc_list
, dmi_addr
[0]);
2548 *mc_addr_ptr
= mc_ptr
->next
->dmi_addr
;
2550 *mc_addr_ptr
= NULL
;
2556 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
2557 * @netdev: network interface device structure
2559 * The set_rx_method entry point is called whenever the unicast/multicast
2560 * address list or the network interface flags are updated. This routine is
2561 * responsible for configuring the hardware for proper unicast, multicast and
2564 void ixgbe_set_rx_mode(struct net_device
*netdev
)
2566 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
2567 struct ixgbe_hw
*hw
= &adapter
->hw
;
2569 u8
*addr_list
= NULL
;
2572 /* Check for Promiscuous and All Multicast modes */
2574 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
2575 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
2577 if (netdev
->flags
& IFF_PROMISC
) {
2578 hw
->addr_ctrl
.user_set_promisc
= 1;
2579 fctrl
|= (IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
2580 vlnctrl
&= ~IXGBE_VLNCTRL_VFE
;
2582 if (netdev
->flags
& IFF_ALLMULTI
) {
2583 fctrl
|= IXGBE_FCTRL_MPE
;
2584 fctrl
&= ~IXGBE_FCTRL_UPE
;
2586 fctrl
&= ~(IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
2588 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
2589 hw
->addr_ctrl
.user_set_promisc
= 0;
2592 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
2593 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
2595 /* reprogram secondary unicast list */
2596 hw
->mac
.ops
.update_uc_addr_list(hw
, netdev
);
2598 /* reprogram multicast list */
2599 addr_count
= netdev_mc_count(netdev
);
2601 addr_list
= netdev
->mc_list
->dmi_addr
;
2602 hw
->mac
.ops
.update_mc_addr_list(hw
, addr_list
, addr_count
,
2603 ixgbe_addr_list_itr
);
2604 if (adapter
->num_vfs
)
2605 ixgbe_restore_vf_multicasts(adapter
);
2608 static void ixgbe_napi_enable_all(struct ixgbe_adapter
*adapter
)
2611 struct ixgbe_q_vector
*q_vector
;
2612 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2614 /* legacy and MSI only use one vector */
2615 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
))
2618 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
2619 struct napi_struct
*napi
;
2620 q_vector
= adapter
->q_vector
[q_idx
];
2621 napi
= &q_vector
->napi
;
2622 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
2623 if (!q_vector
->rxr_count
|| !q_vector
->txr_count
) {
2624 if (q_vector
->txr_count
== 1)
2625 napi
->poll
= &ixgbe_clean_txonly
;
2626 else if (q_vector
->rxr_count
== 1)
2627 napi
->poll
= &ixgbe_clean_rxonly
;
2635 static void ixgbe_napi_disable_all(struct ixgbe_adapter
*adapter
)
2638 struct ixgbe_q_vector
*q_vector
;
2639 int q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
2641 /* legacy and MSI only use one vector */
2642 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
))
2645 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
2646 q_vector
= adapter
->q_vector
[q_idx
];
2647 napi_disable(&q_vector
->napi
);
2651 #ifdef CONFIG_IXGBE_DCB
2653 * ixgbe_configure_dcb - Configure DCB hardware
2654 * @adapter: ixgbe adapter struct
2656 * This is called by the driver on open to configure the DCB hardware.
2657 * This is also called by the gennetlink interface when reconfiguring
2660 static void ixgbe_configure_dcb(struct ixgbe_adapter
*adapter
)
2662 struct ixgbe_hw
*hw
= &adapter
->hw
;
2663 u32 txdctl
, vlnctrl
;
2666 ixgbe_dcb_check_config(&adapter
->dcb_cfg
);
2667 ixgbe_dcb_calculate_tc_credits(&adapter
->dcb_cfg
, DCB_TX_CONFIG
);
2668 ixgbe_dcb_calculate_tc_credits(&adapter
->dcb_cfg
, DCB_RX_CONFIG
);
2670 /* reconfigure the hardware */
2671 ixgbe_dcb_hw_config(&adapter
->hw
, &adapter
->dcb_cfg
);
2673 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2674 j
= adapter
->tx_ring
[i
]->reg_idx
;
2675 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2676 /* PThresh workaround for Tx hang with DFP enabled. */
2678 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
), txdctl
);
2680 /* Enable VLAN tag insert/strip */
2681 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
2682 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
2683 vlnctrl
|= IXGBE_VLNCTRL_VME
| IXGBE_VLNCTRL_VFE
;
2684 vlnctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2685 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
2686 } else if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2687 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
2688 vlnctrl
&= ~IXGBE_VLNCTRL_CFIEN
;
2689 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
2690 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2691 j
= adapter
->rx_ring
[i
]->reg_idx
;
2692 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
2693 vlnctrl
|= IXGBE_RXDCTL_VME
;
2694 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), vlnctrl
);
2697 hw
->mac
.ops
.set_vfta(&adapter
->hw
, 0, 0, true);
2701 static void ixgbe_configure(struct ixgbe_adapter
*adapter
)
2703 struct net_device
*netdev
= adapter
->netdev
;
2704 struct ixgbe_hw
*hw
= &adapter
->hw
;
2707 ixgbe_set_rx_mode(netdev
);
2709 ixgbe_restore_vlan(adapter
);
2710 #ifdef CONFIG_IXGBE_DCB
2711 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
2712 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
2713 netif_set_gso_max_size(netdev
, 32768);
2715 netif_set_gso_max_size(netdev
, 65536);
2716 ixgbe_configure_dcb(adapter
);
2718 netif_set_gso_max_size(netdev
, 65536);
2721 netif_set_gso_max_size(netdev
, 65536);
2725 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
2726 ixgbe_configure_fcoe(adapter
);
2728 #endif /* IXGBE_FCOE */
2729 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
2730 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2731 adapter
->tx_ring
[i
]->atr_sample_rate
=
2732 adapter
->atr_sample_rate
;
2733 ixgbe_init_fdir_signature_82599(hw
, adapter
->fdir_pballoc
);
2734 } else if (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
) {
2735 ixgbe_init_fdir_perfect_82599(hw
, adapter
->fdir_pballoc
);
2738 ixgbe_configure_tx(adapter
);
2739 ixgbe_configure_rx(adapter
);
2740 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2741 ixgbe_alloc_rx_buffers(adapter
, adapter
->rx_ring
[i
],
2742 (adapter
->rx_ring
[i
]->count
- 1));
2745 static inline bool ixgbe_is_sfp(struct ixgbe_hw
*hw
)
2747 switch (hw
->phy
.type
) {
2748 case ixgbe_phy_sfp_avago
:
2749 case ixgbe_phy_sfp_ftl
:
2750 case ixgbe_phy_sfp_intel
:
2751 case ixgbe_phy_sfp_unknown
:
2752 case ixgbe_phy_tw_tyco
:
2753 case ixgbe_phy_tw_unknown
:
2761 * ixgbe_sfp_link_config - set up SFP+ link
2762 * @adapter: pointer to private adapter struct
2764 static void ixgbe_sfp_link_config(struct ixgbe_adapter
*adapter
)
2766 struct ixgbe_hw
*hw
= &adapter
->hw
;
2768 if (hw
->phy
.multispeed_fiber
) {
2770 * In multispeed fiber setups, the device may not have
2771 * had a physical connection when the driver loaded.
2772 * If that's the case, the initial link configuration
2773 * couldn't get the MAC into 10G or 1G mode, so we'll
2774 * never have a link status change interrupt fire.
2775 * We need to try and force an autonegotiation
2776 * session, then bring up link.
2778 hw
->mac
.ops
.setup_sfp(hw
);
2779 if (!(adapter
->flags
& IXGBE_FLAG_IN_SFP_LINK_TASK
))
2780 schedule_work(&adapter
->multispeed_fiber_task
);
2783 * Direct Attach Cu and non-multispeed fiber modules
2784 * still need to be configured properly prior to
2787 if (!(adapter
->flags
& IXGBE_FLAG_IN_SFP_MOD_TASK
))
2788 schedule_work(&adapter
->sfp_config_module_task
);
2793 * ixgbe_non_sfp_link_config - set up non-SFP+ link
2794 * @hw: pointer to private hardware struct
2796 * Returns 0 on success, negative on failure
2798 static int ixgbe_non_sfp_link_config(struct ixgbe_hw
*hw
)
2801 bool negotiation
, link_up
= false;
2802 u32 ret
= IXGBE_ERR_LINK_SETUP
;
2804 if (hw
->mac
.ops
.check_link
)
2805 ret
= hw
->mac
.ops
.check_link(hw
, &autoneg
, &link_up
, false);
2810 if (hw
->mac
.ops
.get_link_capabilities
)
2811 ret
= hw
->mac
.ops
.get_link_capabilities(hw
, &autoneg
, &negotiation
);
2815 if (hw
->mac
.ops
.setup_link
)
2816 ret
= hw
->mac
.ops
.setup_link(hw
, autoneg
, negotiation
, link_up
);
2821 #define IXGBE_MAX_RX_DESC_POLL 10
2822 static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter
*adapter
,
2825 int j
= adapter
->rx_ring
[rxr
]->reg_idx
;
2828 for (k
= 0; k
< IXGBE_MAX_RX_DESC_POLL
; k
++) {
2829 if (IXGBE_READ_REG(&adapter
->hw
,
2830 IXGBE_RXDCTL(j
)) & IXGBE_RXDCTL_ENABLE
)
2835 if (k
>= IXGBE_MAX_RX_DESC_POLL
) {
2836 DPRINTK(DRV
, ERR
, "RXDCTL.ENABLE on Rx queue %d "
2837 "not set within the polling period\n", rxr
);
2839 ixgbe_release_rx_desc(&adapter
->hw
, adapter
->rx_ring
[rxr
],
2840 (adapter
->rx_ring
[rxr
]->count
- 1));
2843 static int ixgbe_up_complete(struct ixgbe_adapter
*adapter
)
2845 struct net_device
*netdev
= adapter
->netdev
;
2846 struct ixgbe_hw
*hw
= &adapter
->hw
;
2848 int num_rx_rings
= adapter
->num_rx_queues
;
2850 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2851 u32 txdctl
, rxdctl
, mhadd
;
2856 ixgbe_get_hw_control(adapter
);
2858 if ((adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) ||
2859 (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
)) {
2860 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
2861 gpie
= (IXGBE_GPIE_MSIX_MODE
| IXGBE_GPIE_EIAME
|
2862 IXGBE_GPIE_PBA_SUPPORT
| IXGBE_GPIE_OCD
);
2867 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
2868 gpie
&= ~IXGBE_GPIE_VTMODE_MASK
;
2869 gpie
|= IXGBE_GPIE_VTMODE_64
;
2871 /* XXX: to interrupt immediately for EICS writes, enable this */
2872 /* gpie |= IXGBE_GPIE_EIMEN; */
2873 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
2876 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
2878 * use EIAM to auto-mask when MSI-X interrupt is asserted
2879 * this saves a register write for every interrupt
2881 switch (hw
->mac
.type
) {
2882 case ixgbe_mac_82598EB
:
2883 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
2886 case ixgbe_mac_82599EB
:
2887 IXGBE_WRITE_REG(hw
, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
2888 IXGBE_WRITE_REG(hw
, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
2892 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
2893 * specifically only auto mask tx and rx interrupts */
2894 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
2897 /* Enable fan failure interrupt if media type is copper */
2898 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
2899 gpie
= IXGBE_READ_REG(hw
, IXGBE_GPIE
);
2900 gpie
|= IXGBE_SDP1_GPIEN
;
2901 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
2904 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2905 gpie
= IXGBE_READ_REG(hw
, IXGBE_GPIE
);
2906 gpie
|= IXGBE_SDP1_GPIEN
;
2907 gpie
|= IXGBE_SDP2_GPIEN
;
2908 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
2912 /* adjust max frame to be able to do baby jumbo for FCoE */
2913 if ((netdev
->features
& NETIF_F_FCOE_MTU
) &&
2914 (max_frame
< IXGBE_FCOE_JUMBO_FRAME_SIZE
))
2915 max_frame
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
2917 #endif /* IXGBE_FCOE */
2918 mhadd
= IXGBE_READ_REG(hw
, IXGBE_MHADD
);
2919 if (max_frame
!= (mhadd
>> IXGBE_MHADD_MFS_SHIFT
)) {
2920 mhadd
&= ~IXGBE_MHADD_MFS_MASK
;
2921 mhadd
|= max_frame
<< IXGBE_MHADD_MFS_SHIFT
;
2923 IXGBE_WRITE_REG(hw
, IXGBE_MHADD
, mhadd
);
2926 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2927 j
= adapter
->tx_ring
[i
]->reg_idx
;
2928 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2929 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2930 txdctl
|= (8 << 16);
2931 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
), txdctl
);
2934 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2935 /* DMATXCTL.EN must be set after all Tx queue config is done */
2936 dmatxctl
= IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
);
2937 dmatxctl
|= IXGBE_DMATXCTL_TE
;
2938 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
, dmatxctl
);
2940 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2941 j
= adapter
->tx_ring
[i
]->reg_idx
;
2942 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2943 txdctl
|= IXGBE_TXDCTL_ENABLE
;
2944 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
), txdctl
);
2945 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
2947 /* poll for Tx Enable ready */
2950 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
2951 } while (--wait_loop
&&
2952 !(txdctl
& IXGBE_TXDCTL_ENABLE
));
2954 DPRINTK(DRV
, ERR
, "Could not enable "
2955 "Tx Queue %d\n", j
);
2959 for (i
= 0; i
< num_rx_rings
; i
++) {
2960 j
= adapter
->rx_ring
[i
]->reg_idx
;
2961 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
2962 /* enable PTHRESH=32 descriptors (half the internal cache)
2963 * and HTHRESH=0 descriptors (to minimize latency on fetch),
2964 * this also removes a pesky rx_no_buffer_count increment */
2966 rxdctl
|= IXGBE_RXDCTL_ENABLE
;
2967 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), rxdctl
);
2968 if (hw
->mac
.type
== ixgbe_mac_82599EB
)
2969 ixgbe_rx_desc_queue_enable(adapter
, i
);
2971 /* enable all receives */
2972 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
2973 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
2974 rxdctl
|= (IXGBE_RXCTRL_DMBYPS
| IXGBE_RXCTRL_RXEN
);
2976 rxdctl
|= IXGBE_RXCTRL_RXEN
;
2977 hw
->mac
.ops
.enable_rx_dma(hw
, rxdctl
);
2979 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
2980 ixgbe_configure_msix(adapter
);
2982 ixgbe_configure_msi_and_legacy(adapter
);
2984 clear_bit(__IXGBE_DOWN
, &adapter
->state
);
2985 ixgbe_napi_enable_all(adapter
);
2987 /* clear any pending interrupts, may auto mask */
2988 IXGBE_READ_REG(hw
, IXGBE_EICR
);
2990 ixgbe_irq_enable(adapter
);
2993 * If this adapter has a fan, check to see if we had a failure
2994 * before we enabled the interrupt.
2996 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
2997 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
2998 if (esdp
& IXGBE_ESDP_SDP1
)
3000 "Fan has stopped, replace the adapter\n");
3004 * For hot-pluggable SFP+ devices, a new SFP+ module may have
3005 * arrived before interrupts were enabled but after probe. Such
3006 * devices wouldn't have their type identified yet. We need to
3007 * kick off the SFP+ module setup first, then try to bring up link.
3008 * If we're not hot-pluggable SFP+, we just need to configure link
3011 if (hw
->phy
.type
== ixgbe_phy_unknown
) {
3012 err
= hw
->phy
.ops
.identify(hw
);
3013 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
3015 * Take the device down and schedule the sfp tasklet
3016 * which will unregister_netdev and log it.
3018 ixgbe_down(adapter
);
3019 schedule_work(&adapter
->sfp_config_module_task
);
3024 if (ixgbe_is_sfp(hw
)) {
3025 ixgbe_sfp_link_config(adapter
);
3027 err
= ixgbe_non_sfp_link_config(hw
);
3029 DPRINTK(PROBE
, ERR
, "link_config FAILED %d\n", err
);
3032 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3033 set_bit(__IXGBE_FDIR_INIT_DONE
,
3034 &(adapter
->tx_ring
[i
]->reinit_state
));
3036 /* enable transmits */
3037 netif_tx_start_all_queues(netdev
);
3039 /* bring the link up in the watchdog, this could race with our first
3040 * link up interrupt but shouldn't be a problem */
3041 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
3042 adapter
->link_check_timeout
= jiffies
;
3043 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3045 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
3046 ctrl_ext
= IXGBE_READ_REG(hw
, IXGBE_CTRL_EXT
);
3047 ctrl_ext
|= IXGBE_CTRL_EXT_PFRSTD
;
3048 IXGBE_WRITE_REG(hw
, IXGBE_CTRL_EXT
, ctrl_ext
);
3053 void ixgbe_reinit_locked(struct ixgbe_adapter
*adapter
)
3055 WARN_ON(in_interrupt());
3056 while (test_and_set_bit(__IXGBE_RESETTING
, &adapter
->state
))
3058 ixgbe_down(adapter
);
3060 * If SR-IOV enabled then wait a bit before bringing the adapter
3061 * back up to give the VFs time to respond to the reset. The
3062 * two second wait is based upon the watchdog timer cycle in
3065 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
3068 clear_bit(__IXGBE_RESETTING
, &adapter
->state
);
3071 int ixgbe_up(struct ixgbe_adapter
*adapter
)
3073 /* hardware has been reset, we need to reload some things */
3074 ixgbe_configure(adapter
);
3076 return ixgbe_up_complete(adapter
);
3079 void ixgbe_reset(struct ixgbe_adapter
*adapter
)
3081 struct ixgbe_hw
*hw
= &adapter
->hw
;
3084 err
= hw
->mac
.ops
.init_hw(hw
);
3087 case IXGBE_ERR_SFP_NOT_PRESENT
:
3089 case IXGBE_ERR_MASTER_REQUESTS_PENDING
:
3090 dev_err(&adapter
->pdev
->dev
, "master disable timed out\n");
3092 case IXGBE_ERR_EEPROM_VERSION
:
3093 /* We are running on a pre-production device, log a warning */
3094 dev_warn(&adapter
->pdev
->dev
, "This device is a pre-production "
3095 "adapter/LOM. Please be aware there may be issues "
3096 "associated with your hardware. If you are "
3097 "experiencing problems please contact your Intel or "
3098 "hardware representative who provided you with this "
3102 dev_err(&adapter
->pdev
->dev
, "Hardware Error: %d\n", err
);
3105 /* reprogram the RAR[0] in case user changed it. */
3106 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, adapter
->num_vfs
,
3111 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
3112 * @adapter: board private structure
3113 * @rx_ring: ring to free buffers from
3115 static void ixgbe_clean_rx_ring(struct ixgbe_adapter
*adapter
,
3116 struct ixgbe_ring
*rx_ring
)
3118 struct pci_dev
*pdev
= adapter
->pdev
;
3122 /* Free all the Rx ring sk_buffs */
3124 for (i
= 0; i
< rx_ring
->count
; i
++) {
3125 struct ixgbe_rx_buffer
*rx_buffer_info
;
3127 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
3128 if (rx_buffer_info
->dma
) {
3129 pci_unmap_single(pdev
, rx_buffer_info
->dma
,
3130 rx_ring
->rx_buf_len
,
3131 PCI_DMA_FROMDEVICE
);
3132 rx_buffer_info
->dma
= 0;
3134 if (rx_buffer_info
->skb
) {
3135 struct sk_buff
*skb
= rx_buffer_info
->skb
;
3136 rx_buffer_info
->skb
= NULL
;
3138 struct sk_buff
*this = skb
;
3139 if (IXGBE_RSC_CB(this)->dma
) {
3140 pci_unmap_single(pdev
, IXGBE_RSC_CB(this)->dma
,
3141 rx_ring
->rx_buf_len
,
3142 PCI_DMA_FROMDEVICE
);
3143 IXGBE_RSC_CB(this)->dma
= 0;
3146 dev_kfree_skb(this);
3149 if (!rx_buffer_info
->page
)
3151 if (rx_buffer_info
->page_dma
) {
3152 pci_unmap_page(pdev
, rx_buffer_info
->page_dma
,
3153 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
3154 rx_buffer_info
->page_dma
= 0;
3156 put_page(rx_buffer_info
->page
);
3157 rx_buffer_info
->page
= NULL
;
3158 rx_buffer_info
->page_offset
= 0;
3161 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
3162 memset(rx_ring
->rx_buffer_info
, 0, size
);
3164 /* Zero out the descriptor ring */
3165 memset(rx_ring
->desc
, 0, rx_ring
->size
);
3167 rx_ring
->next_to_clean
= 0;
3168 rx_ring
->next_to_use
= 0;
3171 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
3173 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
3177 * ixgbe_clean_tx_ring - Free Tx Buffers
3178 * @adapter: board private structure
3179 * @tx_ring: ring to be cleaned
3181 static void ixgbe_clean_tx_ring(struct ixgbe_adapter
*adapter
,
3182 struct ixgbe_ring
*tx_ring
)
3184 struct ixgbe_tx_buffer
*tx_buffer_info
;
3188 /* Free all the Tx ring sk_buffs */
3190 for (i
= 0; i
< tx_ring
->count
; i
++) {
3191 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
3192 ixgbe_unmap_and_free_tx_resource(adapter
, tx_buffer_info
);
3195 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
3196 memset(tx_ring
->tx_buffer_info
, 0, size
);
3198 /* Zero out the descriptor ring */
3199 memset(tx_ring
->desc
, 0, tx_ring
->size
);
3201 tx_ring
->next_to_use
= 0;
3202 tx_ring
->next_to_clean
= 0;
3205 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
3207 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3211 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
3212 * @adapter: board private structure
3214 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter
*adapter
)
3218 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3219 ixgbe_clean_rx_ring(adapter
, adapter
->rx_ring
[i
]);
3223 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
3224 * @adapter: board private structure
3226 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter
*adapter
)
3230 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3231 ixgbe_clean_tx_ring(adapter
, adapter
->tx_ring
[i
]);
3234 void ixgbe_down(struct ixgbe_adapter
*adapter
)
3236 struct net_device
*netdev
= adapter
->netdev
;
3237 struct ixgbe_hw
*hw
= &adapter
->hw
;
3242 /* signal that we are down to the interrupt handler */
3243 set_bit(__IXGBE_DOWN
, &adapter
->state
);
3245 /* disable receive for all VFs and wait one second */
3246 if (adapter
->num_vfs
) {
3247 /* ping all the active vfs to let them know we are going down */
3248 ixgbe_ping_all_vfs(adapter
);
3250 /* Disable all VFTE/VFRE TX/RX */
3251 ixgbe_disable_tx_rx(adapter
);
3253 /* Mark all the VFs as inactive */
3254 for (i
= 0 ; i
< adapter
->num_vfs
; i
++)
3255 adapter
->vfinfo
[i
].clear_to_send
= 0;
3258 /* disable receives */
3259 rxctrl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
3260 IXGBE_WRITE_REG(hw
, IXGBE_RXCTRL
, rxctrl
& ~IXGBE_RXCTRL_RXEN
);
3262 netif_tx_disable(netdev
);
3264 IXGBE_WRITE_FLUSH(hw
);
3267 netif_tx_stop_all_queues(netdev
);
3269 ixgbe_irq_disable(adapter
);
3271 ixgbe_napi_disable_all(adapter
);
3273 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
3274 del_timer_sync(&adapter
->sfp_timer
);
3275 del_timer_sync(&adapter
->watchdog_timer
);
3276 cancel_work_sync(&adapter
->watchdog_task
);
3278 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
3279 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
3280 cancel_work_sync(&adapter
->fdir_reinit_task
);
3282 /* disable transmits in the hardware now that interrupts are off */
3283 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3284 j
= adapter
->tx_ring
[i
]->reg_idx
;
3285 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(j
));
3286 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(j
),
3287 (txdctl
& ~IXGBE_TXDCTL_ENABLE
));
3289 /* Disable the Tx DMA engine on 82599 */
3290 if (hw
->mac
.type
== ixgbe_mac_82599EB
)
3291 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
,
3292 (IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
) &
3293 ~IXGBE_DMATXCTL_TE
));
3295 netif_carrier_off(netdev
);
3297 /* clear n-tuple filters that are cached */
3298 ethtool_ntuple_flush(netdev
);
3300 if (!pci_channel_offline(adapter
->pdev
))
3301 ixgbe_reset(adapter
);
3302 ixgbe_clean_all_tx_rings(adapter
);
3303 ixgbe_clean_all_rx_rings(adapter
);
3305 #ifdef CONFIG_IXGBE_DCA
3306 /* since we reset the hardware DCA settings were cleared */
3307 ixgbe_setup_dca(adapter
);
3312 * ixgbe_poll - NAPI Rx polling callback
3313 * @napi: structure for representing this polling device
3314 * @budget: how many packets driver is allowed to clean
3316 * This function is used for legacy and MSI, NAPI mode
3318 static int ixgbe_poll(struct napi_struct
*napi
, int budget
)
3320 struct ixgbe_q_vector
*q_vector
=
3321 container_of(napi
, struct ixgbe_q_vector
, napi
);
3322 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
3323 int tx_clean_complete
, work_done
= 0;
3325 #ifdef CONFIG_IXGBE_DCA
3326 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
3327 ixgbe_update_tx_dca(adapter
, adapter
->tx_ring
[0]);
3328 ixgbe_update_rx_dca(adapter
, adapter
->rx_ring
[0]);
3332 tx_clean_complete
= ixgbe_clean_tx_irq(q_vector
, adapter
->tx_ring
[0]);
3333 ixgbe_clean_rx_irq(q_vector
, adapter
->rx_ring
[0], &work_done
, budget
);
3335 if (!tx_clean_complete
)
3338 /* If budget not fully consumed, exit the polling mode */
3339 if (work_done
< budget
) {
3340 napi_complete(napi
);
3341 if (adapter
->rx_itr_setting
& 1)
3342 ixgbe_set_itr(adapter
);
3343 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3344 ixgbe_irq_enable_queues(adapter
, IXGBE_EIMS_RTX_QUEUE
);
3350 * ixgbe_tx_timeout - Respond to a Tx Hang
3351 * @netdev: network interface device structure
3353 static void ixgbe_tx_timeout(struct net_device
*netdev
)
3355 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
3357 /* Do the reset outside of interrupt context */
3358 schedule_work(&adapter
->reset_task
);
3361 static void ixgbe_reset_task(struct work_struct
*work
)
3363 struct ixgbe_adapter
*adapter
;
3364 adapter
= container_of(work
, struct ixgbe_adapter
, reset_task
);
3366 /* If we're already down or resetting, just bail */
3367 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
3368 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
3371 adapter
->tx_timeout_count
++;
3373 ixgbe_reinit_locked(adapter
);
3376 #ifdef CONFIG_IXGBE_DCB
3377 static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter
*adapter
)
3380 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_DCB
];
3382 if (!(adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
))
3386 adapter
->num_rx_queues
= f
->indices
;
3387 adapter
->num_tx_queues
= f
->indices
;
3395 * ixgbe_set_rss_queues: Allocate queues for RSS
3396 * @adapter: board private structure to initialize
3398 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3399 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3402 static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter
*adapter
)
3405 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_RSS
];
3407 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3409 adapter
->num_rx_queues
= f
->indices
;
3410 adapter
->num_tx_queues
= f
->indices
;
3420 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3421 * @adapter: board private structure to initialize
3423 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3424 * to the original CPU that initiated the Tx session. This runs in addition
3425 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3426 * Rx load across CPUs using RSS.
3429 static bool inline ixgbe_set_fdir_queues(struct ixgbe_adapter
*adapter
)
3432 struct ixgbe_ring_feature
*f_fdir
= &adapter
->ring_feature
[RING_F_FDIR
];
3434 f_fdir
->indices
= min((int)num_online_cpus(), f_fdir
->indices
);
3437 /* Flow Director must have RSS enabled */
3438 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
&&
3439 ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
3440 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)))) {
3441 adapter
->num_tx_queues
= f_fdir
->indices
;
3442 adapter
->num_rx_queues
= f_fdir
->indices
;
3445 adapter
->flags
&= ~IXGBE_FLAG_FDIR_HASH_CAPABLE
;
3446 adapter
->flags
&= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
3453 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
3454 * @adapter: board private structure to initialize
3456 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
3457 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
3458 * rx queues out of the max number of rx queues, instead, it is used as the
3459 * index of the first rx queue used by FCoE.
3462 static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter
*adapter
)
3465 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_FCOE
];
3467 f
->indices
= min((int)num_online_cpus(), f
->indices
);
3468 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
3469 adapter
->num_rx_queues
= 1;
3470 adapter
->num_tx_queues
= 1;
3471 #ifdef CONFIG_IXGBE_DCB
3472 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
3473 DPRINTK(PROBE
, INFO
, "FCoE enabled with DCB \n");
3474 ixgbe_set_dcb_queues(adapter
);
3477 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3478 DPRINTK(PROBE
, INFO
, "FCoE enabled with RSS \n");
3479 if ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) ||
3480 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))
3481 ixgbe_set_fdir_queues(adapter
);
3483 ixgbe_set_rss_queues(adapter
);
3485 /* adding FCoE rx rings to the end */
3486 f
->mask
= adapter
->num_rx_queues
;
3487 adapter
->num_rx_queues
+= f
->indices
;
3488 adapter
->num_tx_queues
+= f
->indices
;
3496 #endif /* IXGBE_FCOE */
3498 * ixgbe_set_sriov_queues: Allocate queues for IOV use
3499 * @adapter: board private structure to initialize
3501 * IOV doesn't actually use anything, so just NAK the
3502 * request for now and let the other queue routines
3503 * figure out what to do.
3505 static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter
*adapter
)
3511 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
3512 * @adapter: board private structure to initialize
3514 * This is the top level queue allocation routine. The order here is very
3515 * important, starting with the "most" number of features turned on at once,
3516 * and ending with the smallest set of features. This way large combinations
3517 * can be allocated if they're turned on, and smaller combinations are the
3518 * fallthrough conditions.
3521 static void ixgbe_set_num_queues(struct ixgbe_adapter
*adapter
)
3523 /* Start with base case */
3524 adapter
->num_rx_queues
= 1;
3525 adapter
->num_tx_queues
= 1;
3526 adapter
->num_rx_pools
= adapter
->num_rx_queues
;
3527 adapter
->num_rx_queues_per_pool
= 1;
3529 if (ixgbe_set_sriov_queues(adapter
))
3533 if (ixgbe_set_fcoe_queues(adapter
))
3536 #endif /* IXGBE_FCOE */
3537 #ifdef CONFIG_IXGBE_DCB
3538 if (ixgbe_set_dcb_queues(adapter
))
3542 if (ixgbe_set_fdir_queues(adapter
))
3545 if (ixgbe_set_rss_queues(adapter
))
3548 /* fallback to base case */
3549 adapter
->num_rx_queues
= 1;
3550 adapter
->num_tx_queues
= 1;
3553 /* Notify the stack of the (possibly) reduced Tx Queue count. */
3554 adapter
->netdev
->real_num_tx_queues
= adapter
->num_tx_queues
;
3557 static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter
*adapter
,
3560 int err
, vector_threshold
;
3562 /* We'll want at least 3 (vector_threshold):
3565 * 3) Other (Link Status Change, etc.)
3566 * 4) TCP Timer (optional)
3568 vector_threshold
= MIN_MSIX_COUNT
;
3570 /* The more we get, the more we will assign to Tx/Rx Cleanup
3571 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
3572 * Right now, we simply care about how many we'll get; we'll
3573 * set them up later while requesting irq's.
3575 while (vectors
>= vector_threshold
) {
3576 err
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
3578 if (!err
) /* Success in acquiring all requested vectors. */
3581 vectors
= 0; /* Nasty failure, quit now */
3582 else /* err == number of vectors we should try again with */
3586 if (vectors
< vector_threshold
) {
3587 /* Can't allocate enough MSI-X interrupts? Oh well.
3588 * This just means we'll go with either a single MSI
3589 * vector or fall back to legacy interrupts.
3591 DPRINTK(HW
, DEBUG
, "Unable to allocate MSI-X interrupts\n");
3592 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
3593 kfree(adapter
->msix_entries
);
3594 adapter
->msix_entries
= NULL
;
3596 adapter
->flags
|= IXGBE_FLAG_MSIX_ENABLED
; /* Woot! */
3598 * Adjust for only the vectors we'll use, which is minimum
3599 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
3600 * vectors we were allocated.
3602 adapter
->num_msix_vectors
= min(vectors
,
3603 adapter
->max_msix_q_vectors
+ NON_Q_VECTORS
);
3608 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
3609 * @adapter: board private structure to initialize
3611 * Cache the descriptor ring offsets for RSS to the assigned rings.
3614 static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter
*adapter
)
3619 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3620 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3621 adapter
->rx_ring
[i
]->reg_idx
= i
;
3622 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3623 adapter
->tx_ring
[i
]->reg_idx
= i
;
3632 #ifdef CONFIG_IXGBE_DCB
3634 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
3635 * @adapter: board private structure to initialize
3637 * Cache the descriptor ring offsets for DCB to the assigned rings.
3640 static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter
*adapter
)
3644 int dcb_i
= adapter
->ring_feature
[RING_F_DCB
].indices
;
3646 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
3647 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
3648 /* the number of queues is assumed to be symmetric */
3649 for (i
= 0; i
< dcb_i
; i
++) {
3650 adapter
->rx_ring
[i
]->reg_idx
= i
<< 3;
3651 adapter
->tx_ring
[i
]->reg_idx
= i
<< 2;
3654 } else if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) {
3657 * Tx TC0 starts at: descriptor queue 0
3658 * Tx TC1 starts at: descriptor queue 32
3659 * Tx TC2 starts at: descriptor queue 64
3660 * Tx TC3 starts at: descriptor queue 80
3661 * Tx TC4 starts at: descriptor queue 96
3662 * Tx TC5 starts at: descriptor queue 104
3663 * Tx TC6 starts at: descriptor queue 112
3664 * Tx TC7 starts at: descriptor queue 120
3666 * Rx TC0-TC7 are offset by 16 queues each
3668 for (i
= 0; i
< 3; i
++) {
3669 adapter
->tx_ring
[i
]->reg_idx
= i
<< 5;
3670 adapter
->rx_ring
[i
]->reg_idx
= i
<< 4;
3672 for ( ; i
< 5; i
++) {
3673 adapter
->tx_ring
[i
]->reg_idx
=
3675 adapter
->rx_ring
[i
]->reg_idx
= i
<< 4;
3677 for ( ; i
< dcb_i
; i
++) {
3678 adapter
->tx_ring
[i
]->reg_idx
=
3680 adapter
->rx_ring
[i
]->reg_idx
= i
<< 4;
3684 } else if (dcb_i
== 4) {
3686 * Tx TC0 starts at: descriptor queue 0
3687 * Tx TC1 starts at: descriptor queue 64
3688 * Tx TC2 starts at: descriptor queue 96
3689 * Tx TC3 starts at: descriptor queue 112
3691 * Rx TC0-TC3 are offset by 32 queues each
3693 adapter
->tx_ring
[0]->reg_idx
= 0;
3694 adapter
->tx_ring
[1]->reg_idx
= 64;
3695 adapter
->tx_ring
[2]->reg_idx
= 96;
3696 adapter
->tx_ring
[3]->reg_idx
= 112;
3697 for (i
= 0 ; i
< dcb_i
; i
++)
3698 adapter
->rx_ring
[i
]->reg_idx
= i
<< 5;
3716 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
3717 * @adapter: board private structure to initialize
3719 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
3722 static bool inline ixgbe_cache_ring_fdir(struct ixgbe_adapter
*adapter
)
3727 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
&&
3728 ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) ||
3729 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))) {
3730 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3731 adapter
->rx_ring
[i
]->reg_idx
= i
;
3732 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3733 adapter
->tx_ring
[i
]->reg_idx
= i
;
3742 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
3743 * @adapter: board private structure to initialize
3745 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
3748 static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter
*adapter
)
3750 int i
, fcoe_rx_i
= 0, fcoe_tx_i
= 0;
3752 struct ixgbe_ring_feature
*f
= &adapter
->ring_feature
[RING_F_FCOE
];
3754 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
3755 #ifdef CONFIG_IXGBE_DCB
3756 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
3757 struct ixgbe_fcoe
*fcoe
= &adapter
->fcoe
;
3759 ixgbe_cache_ring_dcb(adapter
);
3760 /* find out queues in TC for FCoE */
3761 fcoe_rx_i
= adapter
->rx_ring
[fcoe
->tc
]->reg_idx
+ 1;
3762 fcoe_tx_i
= adapter
->tx_ring
[fcoe
->tc
]->reg_idx
+ 1;
3764 * In 82599, the number of Tx queues for each traffic
3765 * class for both 8-TC and 4-TC modes are:
3766 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
3767 * 8 TCs: 32 32 16 16 8 8 8 8
3768 * 4 TCs: 64 64 32 32
3769 * We have max 8 queues for FCoE, where 8 the is
3770 * FCoE redirection table size. If TC for FCoE is
3771 * less than or equal to TC3, we have enough queues
3772 * to add max of 8 queues for FCoE, so we start FCoE
3773 * tx descriptor from the next one, i.e., reg_idx + 1.
3774 * If TC for FCoE is above TC3, implying 8 TC mode,
3775 * and we need 8 for FCoE, we have to take all queues
3776 * in that traffic class for FCoE.
3778 if ((f
->indices
== IXGBE_FCRETA_SIZE
) && (fcoe
->tc
> 3))
3781 #endif /* CONFIG_IXGBE_DCB */
3782 if (adapter
->flags
& IXGBE_FLAG_RSS_ENABLED
) {
3783 if ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) ||
3784 (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))
3785 ixgbe_cache_ring_fdir(adapter
);
3787 ixgbe_cache_ring_rss(adapter
);
3789 fcoe_rx_i
= f
->mask
;
3790 fcoe_tx_i
= f
->mask
;
3792 for (i
= 0; i
< f
->indices
; i
++, fcoe_rx_i
++, fcoe_tx_i
++) {
3793 adapter
->rx_ring
[f
->mask
+ i
]->reg_idx
= fcoe_rx_i
;
3794 adapter
->tx_ring
[f
->mask
+ i
]->reg_idx
= fcoe_tx_i
;
3801 #endif /* IXGBE_FCOE */
3803 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
3804 * @adapter: board private structure to initialize
3806 * SR-IOV doesn't use any descriptor rings but changes the default if
3807 * no other mapping is used.
3810 static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter
*adapter
)
3812 adapter
->rx_ring
[0]->reg_idx
= adapter
->num_vfs
* 2;
3813 adapter
->tx_ring
[0]->reg_idx
= adapter
->num_vfs
* 2;
3814 if (adapter
->num_vfs
)
3821 * ixgbe_cache_ring_register - Descriptor ring to register mapping
3822 * @adapter: board private structure to initialize
3824 * Once we know the feature-set enabled for the device, we'll cache
3825 * the register offset the descriptor ring is assigned to.
3827 * Note, the order the various feature calls is important. It must start with
3828 * the "most" features enabled at the same time, then trickle down to the
3829 * least amount of features turned on at once.
3831 static void ixgbe_cache_ring_register(struct ixgbe_adapter
*adapter
)
3833 /* start with default case */
3834 adapter
->rx_ring
[0]->reg_idx
= 0;
3835 adapter
->tx_ring
[0]->reg_idx
= 0;
3837 if (ixgbe_cache_ring_sriov(adapter
))
3841 if (ixgbe_cache_ring_fcoe(adapter
))
3844 #endif /* IXGBE_FCOE */
3845 #ifdef CONFIG_IXGBE_DCB
3846 if (ixgbe_cache_ring_dcb(adapter
))
3850 if (ixgbe_cache_ring_fdir(adapter
))
3853 if (ixgbe_cache_ring_rss(adapter
))
3858 * ixgbe_alloc_queues - Allocate memory for all rings
3859 * @adapter: board private structure to initialize
3861 * We allocate one ring per queue at run-time since we don't know the
3862 * number of queues at compile-time. The polling_netdev array is
3863 * intended for Multiqueue, but should work fine with a single queue.
3865 static int ixgbe_alloc_queues(struct ixgbe_adapter
*adapter
)
3868 int orig_node
= adapter
->node
;
3870 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3871 struct ixgbe_ring
*ring
= adapter
->tx_ring
[i
];
3872 if (orig_node
== -1) {
3873 int cur_node
= next_online_node(adapter
->node
);
3874 if (cur_node
== MAX_NUMNODES
)
3875 cur_node
= first_online_node
;
3876 adapter
->node
= cur_node
;
3878 ring
= kzalloc_node(sizeof(struct ixgbe_ring
), GFP_KERNEL
,
3881 ring
= kzalloc(sizeof(struct ixgbe_ring
), GFP_KERNEL
);
3883 goto err_tx_ring_allocation
;
3884 ring
->count
= adapter
->tx_ring_count
;
3885 ring
->queue_index
= i
;
3886 ring
->numa_node
= adapter
->node
;
3888 adapter
->tx_ring
[i
] = ring
;
3891 /* Restore the adapter's original node */
3892 adapter
->node
= orig_node
;
3894 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3895 struct ixgbe_ring
*ring
= adapter
->rx_ring
[i
];
3896 if (orig_node
== -1) {
3897 int cur_node
= next_online_node(adapter
->node
);
3898 if (cur_node
== MAX_NUMNODES
)
3899 cur_node
= first_online_node
;
3900 adapter
->node
= cur_node
;
3902 ring
= kzalloc_node(sizeof(struct ixgbe_ring
), GFP_KERNEL
,
3905 ring
= kzalloc(sizeof(struct ixgbe_ring
), GFP_KERNEL
);
3907 goto err_rx_ring_allocation
;
3908 ring
->count
= adapter
->rx_ring_count
;
3909 ring
->queue_index
= i
;
3910 ring
->numa_node
= adapter
->node
;
3912 adapter
->rx_ring
[i
] = ring
;
3915 /* Restore the adapter's original node */
3916 adapter
->node
= orig_node
;
3918 ixgbe_cache_ring_register(adapter
);
3922 err_rx_ring_allocation
:
3923 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3924 kfree(adapter
->tx_ring
[i
]);
3925 err_tx_ring_allocation
:
3930 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
3931 * @adapter: board private structure to initialize
3933 * Attempt to configure the interrupts using the best available
3934 * capabilities of the hardware and the kernel.
3936 static int ixgbe_set_interrupt_capability(struct ixgbe_adapter
*adapter
)
3938 struct ixgbe_hw
*hw
= &adapter
->hw
;
3940 int vector
, v_budget
;
3943 * It's easy to be greedy for MSI-X vectors, but it really
3944 * doesn't do us much good if we have a lot more vectors
3945 * than CPU's. So let's be conservative and only ask for
3946 * (roughly) the same number of vectors as there are CPU's.
3948 v_budget
= min(adapter
->num_rx_queues
+ adapter
->num_tx_queues
,
3949 (int)num_online_cpus()) + NON_Q_VECTORS
;
3952 * At the same time, hardware can only support a maximum of
3953 * hw.mac->max_msix_vectors vectors. With features
3954 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
3955 * descriptor queues supported by our device. Thus, we cap it off in
3956 * those rare cases where the cpu count also exceeds our vector limit.
3958 v_budget
= min(v_budget
, (int)hw
->mac
.max_msix_vectors
);
3960 /* A failure in MSI-X entry allocation isn't fatal, but it does
3961 * mean we disable MSI-X capabilities of the adapter. */
3962 adapter
->msix_entries
= kcalloc(v_budget
,
3963 sizeof(struct msix_entry
), GFP_KERNEL
);
3964 if (adapter
->msix_entries
) {
3965 for (vector
= 0; vector
< v_budget
; vector
++)
3966 adapter
->msix_entries
[vector
].entry
= vector
;
3968 ixgbe_acquire_msix_vectors(adapter
, v_budget
);
3970 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
3974 adapter
->flags
&= ~IXGBE_FLAG_DCB_ENABLED
;
3975 adapter
->flags
&= ~IXGBE_FLAG_RSS_ENABLED
;
3976 adapter
->flags
&= ~IXGBE_FLAG_FDIR_HASH_CAPABLE
;
3977 adapter
->flags
&= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
3978 adapter
->atr_sample_rate
= 0;
3979 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
3980 ixgbe_disable_sriov(adapter
);
3982 ixgbe_set_num_queues(adapter
);
3984 err
= pci_enable_msi(adapter
->pdev
);
3986 adapter
->flags
|= IXGBE_FLAG_MSI_ENABLED
;
3988 DPRINTK(HW
, DEBUG
, "Unable to allocate MSI interrupt, "
3989 "falling back to legacy. Error: %d\n", err
);
3999 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
4000 * @adapter: board private structure to initialize
4002 * We allocate one q_vector per queue interrupt. If allocation fails we
4005 static int ixgbe_alloc_q_vectors(struct ixgbe_adapter
*adapter
)
4007 int q_idx
, num_q_vectors
;
4008 struct ixgbe_q_vector
*q_vector
;
4010 int (*poll
)(struct napi_struct
*, int);
4012 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
4013 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
4014 napi_vectors
= adapter
->num_rx_queues
;
4015 poll
= &ixgbe_clean_rxtx_many
;
4022 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
4023 q_vector
= kzalloc_node(sizeof(struct ixgbe_q_vector
),
4024 GFP_KERNEL
, adapter
->node
);
4026 q_vector
= kzalloc(sizeof(struct ixgbe_q_vector
),
4030 q_vector
->adapter
= adapter
;
4031 if (q_vector
->txr_count
&& !q_vector
->rxr_count
)
4032 q_vector
->eitr
= adapter
->tx_eitr_param
;
4034 q_vector
->eitr
= adapter
->rx_eitr_param
;
4035 q_vector
->v_idx
= q_idx
;
4036 netif_napi_add(adapter
->netdev
, &q_vector
->napi
, (*poll
), 64);
4037 adapter
->q_vector
[q_idx
] = q_vector
;
4045 q_vector
= adapter
->q_vector
[q_idx
];
4046 netif_napi_del(&q_vector
->napi
);
4048 adapter
->q_vector
[q_idx
] = NULL
;
4054 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
4055 * @adapter: board private structure to initialize
4057 * This function frees the memory allocated to the q_vectors. In addition if
4058 * NAPI is enabled it will delete any references to the NAPI struct prior
4059 * to freeing the q_vector.
4061 static void ixgbe_free_q_vectors(struct ixgbe_adapter
*adapter
)
4063 int q_idx
, num_q_vectors
;
4065 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
4066 num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
4070 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
4071 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[q_idx
];
4072 adapter
->q_vector
[q_idx
] = NULL
;
4073 netif_napi_del(&q_vector
->napi
);
4078 static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter
*adapter
)
4080 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
4081 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
4082 pci_disable_msix(adapter
->pdev
);
4083 kfree(adapter
->msix_entries
);
4084 adapter
->msix_entries
= NULL
;
4085 } else if (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
) {
4086 adapter
->flags
&= ~IXGBE_FLAG_MSI_ENABLED
;
4087 pci_disable_msi(adapter
->pdev
);
4093 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
4094 * @adapter: board private structure to initialize
4096 * We determine which interrupt scheme to use based on...
4097 * - Kernel support (MSI, MSI-X)
4098 * - which can be user-defined (via MODULE_PARAM)
4099 * - Hardware queue count (num_*_queues)
4100 * - defined by miscellaneous hardware support/features (RSS, etc.)
4102 int ixgbe_init_interrupt_scheme(struct ixgbe_adapter
*adapter
)
4106 /* Number of supported queues */
4107 ixgbe_set_num_queues(adapter
);
4109 err
= ixgbe_set_interrupt_capability(adapter
);
4111 DPRINTK(PROBE
, ERR
, "Unable to setup interrupt capabilities\n");
4112 goto err_set_interrupt
;
4115 err
= ixgbe_alloc_q_vectors(adapter
);
4117 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queue "
4119 goto err_alloc_q_vectors
;
4122 err
= ixgbe_alloc_queues(adapter
);
4124 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
4125 goto err_alloc_queues
;
4128 DPRINTK(DRV
, INFO
, "Multiqueue %s: Rx Queue count = %u, "
4129 "Tx Queue count = %u\n",
4130 (adapter
->num_rx_queues
> 1) ? "Enabled" :
4131 "Disabled", adapter
->num_rx_queues
, adapter
->num_tx_queues
);
4133 set_bit(__IXGBE_DOWN
, &adapter
->state
);
4138 ixgbe_free_q_vectors(adapter
);
4139 err_alloc_q_vectors
:
4140 ixgbe_reset_interrupt_capability(adapter
);
4146 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
4147 * @adapter: board private structure to clear interrupt scheme on
4149 * We go through and clear interrupt specific resources and reset the structure
4150 * to pre-load conditions
4152 void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter
*adapter
)
4156 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
4157 kfree(adapter
->tx_ring
[i
]);
4158 adapter
->tx_ring
[i
] = NULL
;
4160 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4161 kfree(adapter
->rx_ring
[i
]);
4162 adapter
->rx_ring
[i
] = NULL
;
4165 ixgbe_free_q_vectors(adapter
);
4166 ixgbe_reset_interrupt_capability(adapter
);
4170 * ixgbe_sfp_timer - worker thread to find a missing module
4171 * @data: pointer to our adapter struct
4173 static void ixgbe_sfp_timer(unsigned long data
)
4175 struct ixgbe_adapter
*adapter
= (struct ixgbe_adapter
*)data
;
4178 * Do the sfp_timer outside of interrupt context due to the
4179 * delays that sfp+ detection requires
4181 schedule_work(&adapter
->sfp_task
);
4185 * ixgbe_sfp_task - worker thread to find a missing module
4186 * @work: pointer to work_struct containing our data
4188 static void ixgbe_sfp_task(struct work_struct
*work
)
4190 struct ixgbe_adapter
*adapter
= container_of(work
,
4191 struct ixgbe_adapter
,
4193 struct ixgbe_hw
*hw
= &adapter
->hw
;
4195 if ((hw
->phy
.type
== ixgbe_phy_nl
) &&
4196 (hw
->phy
.sfp_type
== ixgbe_sfp_type_not_present
)) {
4197 s32 ret
= hw
->phy
.ops
.identify_sfp(hw
);
4198 if (ret
== IXGBE_ERR_SFP_NOT_PRESENT
)
4200 ret
= hw
->phy
.ops
.reset(hw
);
4201 if (ret
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
4202 dev_err(&adapter
->pdev
->dev
, "failed to initialize "
4203 "because an unsupported SFP+ module type "
4205 "Reload the driver after installing a "
4206 "supported module.\n");
4207 unregister_netdev(adapter
->netdev
);
4209 DPRINTK(PROBE
, INFO
, "detected SFP+: %d\n",
4212 /* don't need this routine any more */
4213 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
4217 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
))
4218 mod_timer(&adapter
->sfp_timer
,
4219 round_jiffies(jiffies
+ (2 * HZ
)));
4223 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
4224 * @adapter: board private structure to initialize
4226 * ixgbe_sw_init initializes the Adapter private data structure.
4227 * Fields are initialized based on PCI device information and
4228 * OS network device settings (MTU size).
4230 static int __devinit
ixgbe_sw_init(struct ixgbe_adapter
*adapter
)
4232 struct ixgbe_hw
*hw
= &adapter
->hw
;
4233 struct pci_dev
*pdev
= adapter
->pdev
;
4234 struct net_device
*dev
= adapter
->netdev
;
4236 #ifdef CONFIG_IXGBE_DCB
4238 struct tc_configuration
*tc
;
4241 /* PCI config space info */
4243 hw
->vendor_id
= pdev
->vendor
;
4244 hw
->device_id
= pdev
->device
;
4245 hw
->revision_id
= pdev
->revision
;
4246 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
4247 hw
->subsystem_device_id
= pdev
->subsystem_device
;
4249 /* Set capability flags */
4250 rss
= min(IXGBE_MAX_RSS_INDICES
, (int)num_online_cpus());
4251 adapter
->ring_feature
[RING_F_RSS
].indices
= rss
;
4252 adapter
->flags
|= IXGBE_FLAG_RSS_ENABLED
;
4253 adapter
->ring_feature
[RING_F_DCB
].indices
= IXGBE_MAX_DCB_INDICES
;
4254 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
4255 if (hw
->device_id
== IXGBE_DEV_ID_82598AT
)
4256 adapter
->flags
|= IXGBE_FLAG_FAN_FAIL_CAPABLE
;
4257 adapter
->max_msix_q_vectors
= MAX_MSIX_Q_VECTORS_82598
;
4258 } else if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4259 adapter
->max_msix_q_vectors
= MAX_MSIX_Q_VECTORS_82599
;
4260 adapter
->flags2
|= IXGBE_FLAG2_RSC_CAPABLE
;
4261 adapter
->flags2
|= IXGBE_FLAG2_RSC_ENABLED
;
4262 if (dev
->features
& NETIF_F_NTUPLE
) {
4263 /* Flow Director perfect filter enabled */
4264 adapter
->flags
|= IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
4265 adapter
->atr_sample_rate
= 0;
4266 spin_lock_init(&adapter
->fdir_perfect_lock
);
4268 /* Flow Director hash filters enabled */
4269 adapter
->flags
|= IXGBE_FLAG_FDIR_HASH_CAPABLE
;
4270 adapter
->atr_sample_rate
= 20;
4272 adapter
->ring_feature
[RING_F_FDIR
].indices
=
4273 IXGBE_MAX_FDIR_INDICES
;
4274 adapter
->fdir_pballoc
= 0;
4276 adapter
->flags
|= IXGBE_FLAG_FCOE_CAPABLE
;
4277 adapter
->flags
&= ~IXGBE_FLAG_FCOE_ENABLED
;
4278 adapter
->ring_feature
[RING_F_FCOE
].indices
= 0;
4279 #ifdef CONFIG_IXGBE_DCB
4280 /* Default traffic class to use for FCoE */
4281 adapter
->fcoe
.tc
= IXGBE_FCOE_DEFTC
;
4283 #endif /* IXGBE_FCOE */
4286 #ifdef CONFIG_IXGBE_DCB
4287 /* Configure DCB traffic classes */
4288 for (j
= 0; j
< MAX_TRAFFIC_CLASS
; j
++) {
4289 tc
= &adapter
->dcb_cfg
.tc_config
[j
];
4290 tc
->path
[DCB_TX_CONFIG
].bwg_id
= 0;
4291 tc
->path
[DCB_TX_CONFIG
].bwg_percent
= 12 + (j
& 1);
4292 tc
->path
[DCB_RX_CONFIG
].bwg_id
= 0;
4293 tc
->path
[DCB_RX_CONFIG
].bwg_percent
= 12 + (j
& 1);
4294 tc
->dcb_pfc
= pfc_disabled
;
4296 adapter
->dcb_cfg
.bw_percentage
[DCB_TX_CONFIG
][0] = 100;
4297 adapter
->dcb_cfg
.bw_percentage
[DCB_RX_CONFIG
][0] = 100;
4298 adapter
->dcb_cfg
.rx_pba_cfg
= pba_equal
;
4299 adapter
->dcb_cfg
.pfc_mode_enable
= false;
4300 adapter
->dcb_cfg
.round_robin_enable
= false;
4301 adapter
->dcb_set_bitmap
= 0x00;
4302 ixgbe_copy_dcb_cfg(&adapter
->dcb_cfg
, &adapter
->temp_dcb_cfg
,
4303 adapter
->ring_feature
[RING_F_DCB
].indices
);
4307 /* default flow control settings */
4308 hw
->fc
.requested_mode
= ixgbe_fc_full
;
4309 hw
->fc
.current_mode
= ixgbe_fc_full
; /* init for ethtool output */
4311 adapter
->last_lfc_mode
= hw
->fc
.current_mode
;
4313 hw
->fc
.high_water
= IXGBE_DEFAULT_FCRTH
;
4314 hw
->fc
.low_water
= IXGBE_DEFAULT_FCRTL
;
4315 hw
->fc
.pause_time
= IXGBE_DEFAULT_FCPAUSE
;
4316 hw
->fc
.send_xon
= true;
4317 hw
->fc
.disable_fc_autoneg
= false;
4319 /* enable itr by default in dynamic mode */
4320 adapter
->rx_itr_setting
= 1;
4321 adapter
->rx_eitr_param
= 20000;
4322 adapter
->tx_itr_setting
= 1;
4323 adapter
->tx_eitr_param
= 10000;
4325 /* set defaults for eitr in MegaBytes */
4326 adapter
->eitr_low
= 10;
4327 adapter
->eitr_high
= 20;
4329 /* set default ring sizes */
4330 adapter
->tx_ring_count
= IXGBE_DEFAULT_TXD
;
4331 adapter
->rx_ring_count
= IXGBE_DEFAULT_RXD
;
4333 /* initialize eeprom parameters */
4334 if (ixgbe_init_eeprom_params_generic(hw
)) {
4335 dev_err(&pdev
->dev
, "EEPROM initialization failed\n");
4339 /* enable rx csum by default */
4340 adapter
->flags
|= IXGBE_FLAG_RX_CSUM_ENABLED
;
4342 /* get assigned NUMA node */
4343 adapter
->node
= dev_to_node(&pdev
->dev
);
4345 set_bit(__IXGBE_DOWN
, &adapter
->state
);
4351 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
4352 * @adapter: board private structure
4353 * @tx_ring: tx descriptor ring (for a specific queue) to setup
4355 * Return 0 on success, negative on failure
4357 int ixgbe_setup_tx_resources(struct ixgbe_adapter
*adapter
,
4358 struct ixgbe_ring
*tx_ring
)
4360 struct pci_dev
*pdev
= adapter
->pdev
;
4363 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
4364 tx_ring
->tx_buffer_info
= vmalloc_node(size
, tx_ring
->numa_node
);
4365 if (!tx_ring
->tx_buffer_info
)
4366 tx_ring
->tx_buffer_info
= vmalloc(size
);
4367 if (!tx_ring
->tx_buffer_info
)
4369 memset(tx_ring
->tx_buffer_info
, 0, size
);
4371 /* round up to nearest 4K */
4372 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
4373 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
4375 tx_ring
->desc
= pci_alloc_consistent(pdev
, tx_ring
->size
,
4380 tx_ring
->next_to_use
= 0;
4381 tx_ring
->next_to_clean
= 0;
4382 tx_ring
->work_limit
= tx_ring
->count
;
4386 vfree(tx_ring
->tx_buffer_info
);
4387 tx_ring
->tx_buffer_info
= NULL
;
4388 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for the transmit "
4389 "descriptor ring\n");
4394 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4395 * @adapter: board private structure
4397 * If this function returns with an error, then it's possible one or
4398 * more of the rings is populated (while the rest are not). It is the
4399 * callers duty to clean those orphaned rings.
4401 * Return 0 on success, negative on failure
4403 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter
*adapter
)
4407 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
4408 err
= ixgbe_setup_tx_resources(adapter
, adapter
->tx_ring
[i
]);
4411 DPRINTK(PROBE
, ERR
, "Allocation for Tx Queue %u failed\n", i
);
4419 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
4420 * @adapter: board private structure
4421 * @rx_ring: rx descriptor ring (for a specific queue) to setup
4423 * Returns 0 on success, negative on failure
4425 int ixgbe_setup_rx_resources(struct ixgbe_adapter
*adapter
,
4426 struct ixgbe_ring
*rx_ring
)
4428 struct pci_dev
*pdev
= adapter
->pdev
;
4431 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
4432 rx_ring
->rx_buffer_info
= vmalloc_node(size
, adapter
->node
);
4433 if (!rx_ring
->rx_buffer_info
)
4434 rx_ring
->rx_buffer_info
= vmalloc(size
);
4435 if (!rx_ring
->rx_buffer_info
) {
4437 "vmalloc allocation failed for the rx desc ring\n");
4440 memset(rx_ring
->rx_buffer_info
, 0, size
);
4442 /* Round up to nearest 4K */
4443 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
4444 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
4446 rx_ring
->desc
= pci_alloc_consistent(pdev
, rx_ring
->size
, &rx_ring
->dma
);
4448 if (!rx_ring
->desc
) {
4450 "Memory allocation failed for the rx desc ring\n");
4451 vfree(rx_ring
->rx_buffer_info
);
4455 rx_ring
->next_to_clean
= 0;
4456 rx_ring
->next_to_use
= 0;
4465 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
4466 * @adapter: board private structure
4468 * If this function returns with an error, then it's possible one or
4469 * more of the rings is populated (while the rest are not). It is the
4470 * callers duty to clean those orphaned rings.
4472 * Return 0 on success, negative on failure
4475 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter
*adapter
)
4479 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4480 err
= ixgbe_setup_rx_resources(adapter
, adapter
->rx_ring
[i
]);
4483 DPRINTK(PROBE
, ERR
, "Allocation for Rx Queue %u failed\n", i
);
4491 * ixgbe_free_tx_resources - Free Tx Resources per Queue
4492 * @adapter: board private structure
4493 * @tx_ring: Tx descriptor ring for a specific queue
4495 * Free all transmit software resources
4497 void ixgbe_free_tx_resources(struct ixgbe_adapter
*adapter
,
4498 struct ixgbe_ring
*tx_ring
)
4500 struct pci_dev
*pdev
= adapter
->pdev
;
4502 ixgbe_clean_tx_ring(adapter
, tx_ring
);
4504 vfree(tx_ring
->tx_buffer_info
);
4505 tx_ring
->tx_buffer_info
= NULL
;
4507 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
4509 tx_ring
->desc
= NULL
;
4513 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
4514 * @adapter: board private structure
4516 * Free all transmit software resources
4518 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter
*adapter
)
4522 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4523 if (adapter
->tx_ring
[i
]->desc
)
4524 ixgbe_free_tx_resources(adapter
, adapter
->tx_ring
[i
]);
4528 * ixgbe_free_rx_resources - Free Rx Resources
4529 * @adapter: board private structure
4530 * @rx_ring: ring to clean the resources from
4532 * Free all receive software resources
4534 void ixgbe_free_rx_resources(struct ixgbe_adapter
*adapter
,
4535 struct ixgbe_ring
*rx_ring
)
4537 struct pci_dev
*pdev
= adapter
->pdev
;
4539 ixgbe_clean_rx_ring(adapter
, rx_ring
);
4541 vfree(rx_ring
->rx_buffer_info
);
4542 rx_ring
->rx_buffer_info
= NULL
;
4544 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
4546 rx_ring
->desc
= NULL
;
4550 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
4551 * @adapter: board private structure
4553 * Free all receive software resources
4555 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter
*adapter
)
4559 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4560 if (adapter
->rx_ring
[i
]->desc
)
4561 ixgbe_free_rx_resources(adapter
, adapter
->rx_ring
[i
]);
4565 * ixgbe_change_mtu - Change the Maximum Transfer Unit
4566 * @netdev: network interface device structure
4567 * @new_mtu: new value for maximum frame size
4569 * Returns 0 on success, negative on failure
4571 static int ixgbe_change_mtu(struct net_device
*netdev
, int new_mtu
)
4573 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4574 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4576 /* MTU < 68 is an error and causes problems on some kernels */
4577 if ((new_mtu
< 68) || (max_frame
> IXGBE_MAX_JUMBO_FRAME_SIZE
))
4580 DPRINTK(PROBE
, INFO
, "changing MTU from %d to %d\n",
4581 netdev
->mtu
, new_mtu
);
4582 /* must set new MTU before calling down or up */
4583 netdev
->mtu
= new_mtu
;
4585 if (netif_running(netdev
))
4586 ixgbe_reinit_locked(adapter
);
4592 * ixgbe_open - Called when a network interface is made active
4593 * @netdev: network interface device structure
4595 * Returns 0 on success, negative value on failure
4597 * The open entry point is called when a network interface is made
4598 * active by the system (IFF_UP). At this point all resources needed
4599 * for transmit and receive operations are allocated, the interrupt
4600 * handler is registered with the OS, the watchdog timer is started,
4601 * and the stack is notified that the interface is ready.
4603 static int ixgbe_open(struct net_device
*netdev
)
4605 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4608 /* disallow open during test */
4609 if (test_bit(__IXGBE_TESTING
, &adapter
->state
))
4612 netif_carrier_off(netdev
);
4614 /* allocate transmit descriptors */
4615 err
= ixgbe_setup_all_tx_resources(adapter
);
4619 /* allocate receive descriptors */
4620 err
= ixgbe_setup_all_rx_resources(adapter
);
4624 ixgbe_configure(adapter
);
4626 err
= ixgbe_request_irq(adapter
);
4630 err
= ixgbe_up_complete(adapter
);
4634 netif_tx_start_all_queues(netdev
);
4639 ixgbe_release_hw_control(adapter
);
4640 ixgbe_free_irq(adapter
);
4643 ixgbe_free_all_rx_resources(adapter
);
4645 ixgbe_free_all_tx_resources(adapter
);
4646 ixgbe_reset(adapter
);
4652 * ixgbe_close - Disables a network interface
4653 * @netdev: network interface device structure
4655 * Returns 0, this is not allowed to fail
4657 * The close entry point is called when an interface is de-activated
4658 * by the OS. The hardware is still under the drivers control, but
4659 * needs to be disabled. A global MAC reset is issued to stop the
4660 * hardware, and all transmit and receive resources are freed.
4662 static int ixgbe_close(struct net_device
*netdev
)
4664 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4666 ixgbe_down(adapter
);
4667 ixgbe_free_irq(adapter
);
4669 ixgbe_free_all_tx_resources(adapter
);
4670 ixgbe_free_all_rx_resources(adapter
);
4672 ixgbe_release_hw_control(adapter
);
4678 static int ixgbe_resume(struct pci_dev
*pdev
)
4680 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4681 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4684 pci_set_power_state(pdev
, PCI_D0
);
4685 pci_restore_state(pdev
);
4687 * pci_restore_state clears dev->state_saved so call
4688 * pci_save_state to restore it.
4690 pci_save_state(pdev
);
4692 err
= pci_enable_device_mem(pdev
);
4694 printk(KERN_ERR
"ixgbe: Cannot enable PCI device from "
4698 pci_set_master(pdev
);
4700 pci_wake_from_d3(pdev
, false);
4702 err
= ixgbe_init_interrupt_scheme(adapter
);
4704 printk(KERN_ERR
"ixgbe: Cannot initialize interrupts for "
4709 ixgbe_reset(adapter
);
4711 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
4713 if (netif_running(netdev
)) {
4714 err
= ixgbe_open(adapter
->netdev
);
4719 netif_device_attach(netdev
);
4723 #endif /* CONFIG_PM */
4725 static int __ixgbe_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
4727 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4728 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4729 struct ixgbe_hw
*hw
= &adapter
->hw
;
4731 u32 wufc
= adapter
->wol
;
4736 netif_device_detach(netdev
);
4738 if (netif_running(netdev
)) {
4739 ixgbe_down(adapter
);
4740 ixgbe_free_irq(adapter
);
4741 ixgbe_free_all_tx_resources(adapter
);
4742 ixgbe_free_all_rx_resources(adapter
);
4744 ixgbe_clear_interrupt_scheme(adapter
);
4747 retval
= pci_save_state(pdev
);
4753 ixgbe_set_rx_mode(netdev
);
4755 /* turn on all-multi mode if wake on multicast is enabled */
4756 if (wufc
& IXGBE_WUFC_MC
) {
4757 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
4758 fctrl
|= IXGBE_FCTRL_MPE
;
4759 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
4762 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
4763 ctrl
|= IXGBE_CTRL_GIO_DIS
;
4764 IXGBE_WRITE_REG(hw
, IXGBE_CTRL
, ctrl
);
4766 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, wufc
);
4768 IXGBE_WRITE_REG(hw
, IXGBE_WUC
, 0);
4769 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, 0);
4772 if (wufc
&& hw
->mac
.type
== ixgbe_mac_82599EB
)
4773 pci_wake_from_d3(pdev
, true);
4775 pci_wake_from_d3(pdev
, false);
4777 *enable_wake
= !!wufc
;
4779 ixgbe_release_hw_control(adapter
);
4781 pci_disable_device(pdev
);
4787 static int ixgbe_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4792 retval
= __ixgbe_shutdown(pdev
, &wake
);
4797 pci_prepare_to_sleep(pdev
);
4799 pci_wake_from_d3(pdev
, false);
4800 pci_set_power_state(pdev
, PCI_D3hot
);
4805 #endif /* CONFIG_PM */
4807 static void ixgbe_shutdown(struct pci_dev
*pdev
)
4811 __ixgbe_shutdown(pdev
, &wake
);
4813 if (system_state
== SYSTEM_POWER_OFF
) {
4814 pci_wake_from_d3(pdev
, wake
);
4815 pci_set_power_state(pdev
, PCI_D3hot
);
4820 * ixgbe_update_stats - Update the board statistics counters.
4821 * @adapter: board private structure
4823 void ixgbe_update_stats(struct ixgbe_adapter
*adapter
)
4825 struct net_device
*netdev
= adapter
->netdev
;
4826 struct ixgbe_hw
*hw
= &adapter
->hw
;
4828 u32 i
, missed_rx
= 0, mpc
, bprc
, lxon
, lxoff
, xon_off_tot
;
4829 u64 non_eop_descs
= 0, restart_queue
= 0;
4831 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) {
4834 for (i
= 0; i
< 16; i
++)
4835 adapter
->hw_rx_no_dma_resources
+=
4836 IXGBE_READ_REG(hw
, IXGBE_QPRDC(i
));
4837 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4838 rsc_count
+= adapter
->rx_ring
[i
]->rsc_count
;
4839 rsc_flush
+= adapter
->rx_ring
[i
]->rsc_flush
;
4841 adapter
->rsc_total_count
= rsc_count
;
4842 adapter
->rsc_total_flush
= rsc_flush
;
4845 /* gather some stats to the adapter struct that are per queue */
4846 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4847 restart_queue
+= adapter
->tx_ring
[i
]->restart_queue
;
4848 adapter
->restart_queue
= restart_queue
;
4850 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4851 non_eop_descs
+= adapter
->rx_ring
[i
]->non_eop_descs
;
4852 adapter
->non_eop_descs
= non_eop_descs
;
4854 adapter
->stats
.crcerrs
+= IXGBE_READ_REG(hw
, IXGBE_CRCERRS
);
4855 for (i
= 0; i
< 8; i
++) {
4856 /* for packet buffers not used, the register should read 0 */
4857 mpc
= IXGBE_READ_REG(hw
, IXGBE_MPC(i
));
4859 adapter
->stats
.mpc
[i
] += mpc
;
4860 total_mpc
+= adapter
->stats
.mpc
[i
];
4861 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4862 adapter
->stats
.rnbc
[i
] += IXGBE_READ_REG(hw
, IXGBE_RNBC(i
));
4863 adapter
->stats
.qptc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPTC(i
));
4864 adapter
->stats
.qbtc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBTC(i
));
4865 adapter
->stats
.qprc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPRC(i
));
4866 adapter
->stats
.qbrc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBRC(i
));
4867 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4868 adapter
->stats
.pxonrxc
[i
] += IXGBE_READ_REG(hw
,
4869 IXGBE_PXONRXCNT(i
));
4870 adapter
->stats
.pxoffrxc
[i
] += IXGBE_READ_REG(hw
,
4871 IXGBE_PXOFFRXCNT(i
));
4872 adapter
->stats
.qprdc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPRDC(i
));
4874 adapter
->stats
.pxonrxc
[i
] += IXGBE_READ_REG(hw
,
4876 adapter
->stats
.pxoffrxc
[i
] += IXGBE_READ_REG(hw
,
4879 adapter
->stats
.pxontxc
[i
] += IXGBE_READ_REG(hw
,
4881 adapter
->stats
.pxofftxc
[i
] += IXGBE_READ_REG(hw
,
4884 adapter
->stats
.gprc
+= IXGBE_READ_REG(hw
, IXGBE_GPRC
);
4885 /* work around hardware counting issue */
4886 adapter
->stats
.gprc
-= missed_rx
;
4888 /* 82598 hardware only has a 32 bit counter in the high register */
4889 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
4891 adapter
->stats
.gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCL
);
4892 tmp
= IXGBE_READ_REG(hw
, IXGBE_GORCH
) & 0xF; /* 4 high bits of GORC */
4893 adapter
->stats
.gorc
+= (tmp
<< 32);
4894 adapter
->stats
.gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCL
);
4895 tmp
= IXGBE_READ_REG(hw
, IXGBE_GOTCH
) & 0xF; /* 4 high bits of GOTC */
4896 adapter
->stats
.gotc
+= (tmp
<< 32);
4897 adapter
->stats
.tor
+= IXGBE_READ_REG(hw
, IXGBE_TORL
);
4898 IXGBE_READ_REG(hw
, IXGBE_TORH
); /* to clear */
4899 adapter
->stats
.lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXCNT
);
4900 adapter
->stats
.lxoffrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXCNT
);
4901 adapter
->stats
.fdirmatch
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMATCH
);
4902 adapter
->stats
.fdirmiss
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMISS
);
4904 adapter
->stats
.fccrc
+= IXGBE_READ_REG(hw
, IXGBE_FCCRC
);
4905 adapter
->stats
.fcoerpdc
+= IXGBE_READ_REG(hw
, IXGBE_FCOERPDC
);
4906 adapter
->stats
.fcoeprc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPRC
);
4907 adapter
->stats
.fcoeptc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPTC
);
4908 adapter
->stats
.fcoedwrc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWRC
);
4909 adapter
->stats
.fcoedwtc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWTC
);
4910 #endif /* IXGBE_FCOE */
4912 adapter
->stats
.lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXC
);
4913 adapter
->stats
.lxoffrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXC
);
4914 adapter
->stats
.gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCH
);
4915 adapter
->stats
.gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCH
);
4916 adapter
->stats
.tor
+= IXGBE_READ_REG(hw
, IXGBE_TORH
);
4918 bprc
= IXGBE_READ_REG(hw
, IXGBE_BPRC
);
4919 adapter
->stats
.bprc
+= bprc
;
4920 adapter
->stats
.mprc
+= IXGBE_READ_REG(hw
, IXGBE_MPRC
);
4921 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4922 adapter
->stats
.mprc
-= bprc
;
4923 adapter
->stats
.roc
+= IXGBE_READ_REG(hw
, IXGBE_ROC
);
4924 adapter
->stats
.prc64
+= IXGBE_READ_REG(hw
, IXGBE_PRC64
);
4925 adapter
->stats
.prc127
+= IXGBE_READ_REG(hw
, IXGBE_PRC127
);
4926 adapter
->stats
.prc255
+= IXGBE_READ_REG(hw
, IXGBE_PRC255
);
4927 adapter
->stats
.prc511
+= IXGBE_READ_REG(hw
, IXGBE_PRC511
);
4928 adapter
->stats
.prc1023
+= IXGBE_READ_REG(hw
, IXGBE_PRC1023
);
4929 adapter
->stats
.prc1522
+= IXGBE_READ_REG(hw
, IXGBE_PRC1522
);
4930 adapter
->stats
.rlec
+= IXGBE_READ_REG(hw
, IXGBE_RLEC
);
4931 lxon
= IXGBE_READ_REG(hw
, IXGBE_LXONTXC
);
4932 adapter
->stats
.lxontxc
+= lxon
;
4933 lxoff
= IXGBE_READ_REG(hw
, IXGBE_LXOFFTXC
);
4934 adapter
->stats
.lxofftxc
+= lxoff
;
4935 adapter
->stats
.ruc
+= IXGBE_READ_REG(hw
, IXGBE_RUC
);
4936 adapter
->stats
.gptc
+= IXGBE_READ_REG(hw
, IXGBE_GPTC
);
4937 adapter
->stats
.mptc
+= IXGBE_READ_REG(hw
, IXGBE_MPTC
);
4939 * 82598 errata - tx of flow control packets is included in tx counters
4941 xon_off_tot
= lxon
+ lxoff
;
4942 adapter
->stats
.gptc
-= xon_off_tot
;
4943 adapter
->stats
.mptc
-= xon_off_tot
;
4944 adapter
->stats
.gotc
-= (xon_off_tot
* (ETH_ZLEN
+ ETH_FCS_LEN
));
4945 adapter
->stats
.ruc
+= IXGBE_READ_REG(hw
, IXGBE_RUC
);
4946 adapter
->stats
.rfc
+= IXGBE_READ_REG(hw
, IXGBE_RFC
);
4947 adapter
->stats
.rjc
+= IXGBE_READ_REG(hw
, IXGBE_RJC
);
4948 adapter
->stats
.tpr
+= IXGBE_READ_REG(hw
, IXGBE_TPR
);
4949 adapter
->stats
.ptc64
+= IXGBE_READ_REG(hw
, IXGBE_PTC64
);
4950 adapter
->stats
.ptc64
-= xon_off_tot
;
4951 adapter
->stats
.ptc127
+= IXGBE_READ_REG(hw
, IXGBE_PTC127
);
4952 adapter
->stats
.ptc255
+= IXGBE_READ_REG(hw
, IXGBE_PTC255
);
4953 adapter
->stats
.ptc511
+= IXGBE_READ_REG(hw
, IXGBE_PTC511
);
4954 adapter
->stats
.ptc1023
+= IXGBE_READ_REG(hw
, IXGBE_PTC1023
);
4955 adapter
->stats
.ptc1522
+= IXGBE_READ_REG(hw
, IXGBE_PTC1522
);
4956 adapter
->stats
.bptc
+= IXGBE_READ_REG(hw
, IXGBE_BPTC
);
4958 /* Fill out the OS statistics structure */
4959 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4962 netdev
->stats
.rx_errors
= adapter
->stats
.crcerrs
+
4963 adapter
->stats
.rlec
;
4964 netdev
->stats
.rx_dropped
= 0;
4965 netdev
->stats
.rx_length_errors
= adapter
->stats
.rlec
;
4966 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4967 netdev
->stats
.rx_missed_errors
= total_mpc
;
4971 * ixgbe_watchdog - Timer Call-back
4972 * @data: pointer to adapter cast into an unsigned long
4974 static void ixgbe_watchdog(unsigned long data
)
4976 struct ixgbe_adapter
*adapter
= (struct ixgbe_adapter
*)data
;
4977 struct ixgbe_hw
*hw
= &adapter
->hw
;
4982 * Do the watchdog outside of interrupt context due to the lovely
4983 * delays that some of the newer hardware requires
4986 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
4987 goto watchdog_short_circuit
;
4989 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
4991 * for legacy and MSI interrupts don't set any bits
4992 * that are enabled for EIAM, because this operation
4993 * would set *both* EIMS and EICS for any bit in EIAM
4995 IXGBE_WRITE_REG(hw
, IXGBE_EICS
,
4996 (IXGBE_EICS_TCP_TIMER
| IXGBE_EICS_OTHER
));
4997 goto watchdog_reschedule
;
5000 /* get one bit for every active tx/rx interrupt vector */
5001 for (i
= 0; i
< adapter
->num_msix_vectors
- NON_Q_VECTORS
; i
++) {
5002 struct ixgbe_q_vector
*qv
= adapter
->q_vector
[i
];
5003 if (qv
->rxr_count
|| qv
->txr_count
)
5004 eics
|= ((u64
)1 << i
);
5007 /* Cause software interrupt to ensure rx rings are cleaned */
5008 ixgbe_irq_rearm_queues(adapter
, eics
);
5010 watchdog_reschedule
:
5011 /* Reset the timer */
5012 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
5014 watchdog_short_circuit
:
5015 schedule_work(&adapter
->watchdog_task
);
5019 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
5020 * @work: pointer to work_struct containing our data
5022 static void ixgbe_multispeed_fiber_task(struct work_struct
*work
)
5024 struct ixgbe_adapter
*adapter
= container_of(work
,
5025 struct ixgbe_adapter
,
5026 multispeed_fiber_task
);
5027 struct ixgbe_hw
*hw
= &adapter
->hw
;
5031 adapter
->flags
|= IXGBE_FLAG_IN_SFP_LINK_TASK
;
5032 autoneg
= hw
->phy
.autoneg_advertised
;
5033 if ((!autoneg
) && (hw
->mac
.ops
.get_link_capabilities
))
5034 hw
->mac
.ops
.get_link_capabilities(hw
, &autoneg
, &negotiation
);
5035 hw
->mac
.autotry_restart
= false;
5036 if (hw
->mac
.ops
.setup_link
)
5037 hw
->mac
.ops
.setup_link(hw
, autoneg
, negotiation
, true);
5038 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
5039 adapter
->flags
&= ~IXGBE_FLAG_IN_SFP_LINK_TASK
;
5043 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
5044 * @work: pointer to work_struct containing our data
5046 static void ixgbe_sfp_config_module_task(struct work_struct
*work
)
5048 struct ixgbe_adapter
*adapter
= container_of(work
,
5049 struct ixgbe_adapter
,
5050 sfp_config_module_task
);
5051 struct ixgbe_hw
*hw
= &adapter
->hw
;
5054 adapter
->flags
|= IXGBE_FLAG_IN_SFP_MOD_TASK
;
5056 /* Time for electrical oscillations to settle down */
5058 err
= hw
->phy
.ops
.identify_sfp(hw
);
5060 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
5061 dev_err(&adapter
->pdev
->dev
, "failed to initialize because "
5062 "an unsupported SFP+ module type was detected.\n"
5063 "Reload the driver after installing a supported "
5065 unregister_netdev(adapter
->netdev
);
5068 hw
->mac
.ops
.setup_sfp(hw
);
5070 if (!(adapter
->flags
& IXGBE_FLAG_IN_SFP_LINK_TASK
))
5071 /* This will also work for DA Twinax connections */
5072 schedule_work(&adapter
->multispeed_fiber_task
);
5073 adapter
->flags
&= ~IXGBE_FLAG_IN_SFP_MOD_TASK
;
5077 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
5078 * @work: pointer to work_struct containing our data
5080 static void ixgbe_fdir_reinit_task(struct work_struct
*work
)
5082 struct ixgbe_adapter
*adapter
= container_of(work
,
5083 struct ixgbe_adapter
,
5085 struct ixgbe_hw
*hw
= &adapter
->hw
;
5088 if (ixgbe_reinit_fdir_tables_82599(hw
) == 0) {
5089 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
5090 set_bit(__IXGBE_FDIR_INIT_DONE
,
5091 &(adapter
->tx_ring
[i
]->reinit_state
));
5093 DPRINTK(PROBE
, ERR
, "failed to finish FDIR re-initialization, "
5094 "ignored adding FDIR ATR filters \n");
5096 /* Done FDIR Re-initialization, enable transmits */
5097 netif_tx_start_all_queues(adapter
->netdev
);
5100 static DEFINE_MUTEX(ixgbe_watchdog_lock
);
5103 * ixgbe_watchdog_task - worker thread to bring link up
5104 * @work: pointer to work_struct containing our data
5106 static void ixgbe_watchdog_task(struct work_struct
*work
)
5108 struct ixgbe_adapter
*adapter
= container_of(work
,
5109 struct ixgbe_adapter
,
5111 struct net_device
*netdev
= adapter
->netdev
;
5112 struct ixgbe_hw
*hw
= &adapter
->hw
;
5116 struct ixgbe_ring
*tx_ring
;
5117 int some_tx_pending
= 0;
5119 mutex_lock(&ixgbe_watchdog_lock
);
5121 link_up
= adapter
->link_up
;
5122 link_speed
= adapter
->link_speed
;
5124 if (adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
) {
5125 hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
5128 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
5129 for (i
= 0; i
< MAX_TRAFFIC_CLASS
; i
++)
5130 hw
->mac
.ops
.fc_enable(hw
, i
);
5132 hw
->mac
.ops
.fc_enable(hw
, 0);
5135 hw
->mac
.ops
.fc_enable(hw
, 0);
5140 time_after(jiffies
, (adapter
->link_check_timeout
+
5141 IXGBE_TRY_LINK_TIMEOUT
))) {
5142 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_UPDATE
;
5143 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMC_LSC
);
5145 adapter
->link_up
= link_up
;
5146 adapter
->link_speed
= link_speed
;
5150 if (!netif_carrier_ok(netdev
)) {
5151 bool flow_rx
, flow_tx
;
5153 if (hw
->mac
.type
== ixgbe_mac_82599EB
) {
5154 u32 mflcn
= IXGBE_READ_REG(hw
, IXGBE_MFLCN
);
5155 u32 fccfg
= IXGBE_READ_REG(hw
, IXGBE_FCCFG
);
5156 flow_rx
= !!(mflcn
& IXGBE_MFLCN_RFCE
);
5157 flow_tx
= !!(fccfg
& IXGBE_FCCFG_TFCE_802_3X
);
5159 u32 frctl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
5160 u32 rmcs
= IXGBE_READ_REG(hw
, IXGBE_RMCS
);
5161 flow_rx
= !!(frctl
& IXGBE_FCTRL_RFCE
);
5162 flow_tx
= !!(rmcs
& IXGBE_RMCS_TFCE_802_3X
);
5165 printk(KERN_INFO
"ixgbe: %s NIC Link is Up %s, "
5166 "Flow Control: %s\n",
5168 (link_speed
== IXGBE_LINK_SPEED_10GB_FULL
?
5170 (link_speed
== IXGBE_LINK_SPEED_1GB_FULL
?
5171 "1 Gbps" : "unknown speed")),
5172 ((flow_rx
&& flow_tx
) ? "RX/TX" :
5174 (flow_tx
? "TX" : "None"))));
5176 netif_carrier_on(netdev
);
5178 /* Force detection of hung controller */
5179 adapter
->detect_tx_hung
= true;
5182 adapter
->link_up
= false;
5183 adapter
->link_speed
= 0;
5184 if (netif_carrier_ok(netdev
)) {
5185 printk(KERN_INFO
"ixgbe: %s NIC Link is Down\n",
5187 netif_carrier_off(netdev
);
5191 if (!netif_carrier_ok(netdev
)) {
5192 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
5193 tx_ring
= adapter
->tx_ring
[i
];
5194 if (tx_ring
->next_to_use
!= tx_ring
->next_to_clean
) {
5195 some_tx_pending
= 1;
5200 if (some_tx_pending
) {
5201 /* We've lost link, so the controller stops DMA,
5202 * but we've got queued Tx work that's never going
5203 * to get done, so reset controller to flush Tx.
5204 * (Do the reset outside of interrupt context).
5206 schedule_work(&adapter
->reset_task
);
5210 ixgbe_update_stats(adapter
);
5211 mutex_unlock(&ixgbe_watchdog_lock
);
5214 static int ixgbe_tso(struct ixgbe_adapter
*adapter
,
5215 struct ixgbe_ring
*tx_ring
, struct sk_buff
*skb
,
5216 u32 tx_flags
, u8
*hdr_len
)
5218 struct ixgbe_adv_tx_context_desc
*context_desc
;
5221 struct ixgbe_tx_buffer
*tx_buffer_info
;
5222 u32 vlan_macip_lens
= 0, type_tucmd_mlhl
;
5223 u32 mss_l4len_idx
, l4len
;
5225 if (skb_is_gso(skb
)) {
5226 if (skb_header_cloned(skb
)) {
5227 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
5231 l4len
= tcp_hdrlen(skb
);
5234 if (skb
->protocol
== htons(ETH_P_IP
)) {
5235 struct iphdr
*iph
= ip_hdr(skb
);
5238 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
5242 } else if (skb_is_gso_v6(skb
)) {
5243 ipv6_hdr(skb
)->payload_len
= 0;
5244 tcp_hdr(skb
)->check
=
5245 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
5246 &ipv6_hdr(skb
)->daddr
,
5250 i
= tx_ring
->next_to_use
;
5252 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5253 context_desc
= IXGBE_TX_CTXTDESC_ADV(*tx_ring
, i
);
5255 /* VLAN MACLEN IPLEN */
5256 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
5258 (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
);
5259 vlan_macip_lens
|= ((skb_network_offset(skb
)) <<
5260 IXGBE_ADVTXD_MACLEN_SHIFT
);
5261 *hdr_len
+= skb_network_offset(skb
);
5263 (skb_transport_header(skb
) - skb_network_header(skb
));
5265 (skb_transport_header(skb
) - skb_network_header(skb
));
5266 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
5267 context_desc
->seqnum_seed
= 0;
5269 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
5270 type_tucmd_mlhl
= (IXGBE_TXD_CMD_DEXT
|
5271 IXGBE_ADVTXD_DTYP_CTXT
);
5273 if (skb
->protocol
== htons(ETH_P_IP
))
5274 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_IPV4
;
5275 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
5276 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd_mlhl
);
5280 (skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
);
5281 mss_l4len_idx
|= (l4len
<< IXGBE_ADVTXD_L4LEN_SHIFT
);
5282 /* use index 1 for TSO */
5283 mss_l4len_idx
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
5284 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
5286 tx_buffer_info
->time_stamp
= jiffies
;
5287 tx_buffer_info
->next_to_watch
= i
;
5290 if (i
== tx_ring
->count
)
5292 tx_ring
->next_to_use
= i
;
5299 static bool ixgbe_tx_csum(struct ixgbe_adapter
*adapter
,
5300 struct ixgbe_ring
*tx_ring
,
5301 struct sk_buff
*skb
, u32 tx_flags
)
5303 struct ixgbe_adv_tx_context_desc
*context_desc
;
5305 struct ixgbe_tx_buffer
*tx_buffer_info
;
5306 u32 vlan_macip_lens
= 0, type_tucmd_mlhl
= 0;
5308 if (skb
->ip_summed
== CHECKSUM_PARTIAL
||
5309 (tx_flags
& IXGBE_TX_FLAGS_VLAN
)) {
5310 i
= tx_ring
->next_to_use
;
5311 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5312 context_desc
= IXGBE_TX_CTXTDESC_ADV(*tx_ring
, i
);
5314 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
5316 (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
);
5317 vlan_macip_lens
|= (skb_network_offset(skb
) <<
5318 IXGBE_ADVTXD_MACLEN_SHIFT
);
5319 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
5320 vlan_macip_lens
|= (skb_transport_header(skb
) -
5321 skb_network_header(skb
));
5323 context_desc
->vlan_macip_lens
= cpu_to_le32(vlan_macip_lens
);
5324 context_desc
->seqnum_seed
= 0;
5326 type_tucmd_mlhl
|= (IXGBE_TXD_CMD_DEXT
|
5327 IXGBE_ADVTXD_DTYP_CTXT
);
5329 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
5332 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
)) {
5333 const struct vlan_ethhdr
*vhdr
=
5334 (const struct vlan_ethhdr
*)skb
->data
;
5336 protocol
= vhdr
->h_vlan_encapsulated_proto
;
5338 protocol
= skb
->protocol
;
5342 case cpu_to_be16(ETH_P_IP
):
5343 type_tucmd_mlhl
|= IXGBE_ADVTXD_TUCMD_IPV4
;
5344 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
5346 IXGBE_ADVTXD_TUCMD_L4T_TCP
;
5347 else if (ip_hdr(skb
)->protocol
== IPPROTO_SCTP
)
5349 IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
5351 case cpu_to_be16(ETH_P_IPV6
):
5352 /* XXX what about other V6 headers?? */
5353 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
5355 IXGBE_ADVTXD_TUCMD_L4T_TCP
;
5356 else if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_SCTP
)
5358 IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
5361 if (unlikely(net_ratelimit())) {
5362 DPRINTK(PROBE
, WARNING
,
5363 "partial checksum but proto=%x!\n",
5370 context_desc
->type_tucmd_mlhl
= cpu_to_le32(type_tucmd_mlhl
);
5371 /* use index zero for tx checksum offload */
5372 context_desc
->mss_l4len_idx
= 0;
5374 tx_buffer_info
->time_stamp
= jiffies
;
5375 tx_buffer_info
->next_to_watch
= i
;
5378 if (i
== tx_ring
->count
)
5380 tx_ring
->next_to_use
= i
;
5388 static int ixgbe_tx_map(struct ixgbe_adapter
*adapter
,
5389 struct ixgbe_ring
*tx_ring
,
5390 struct sk_buff
*skb
, u32 tx_flags
,
5393 struct pci_dev
*pdev
= adapter
->pdev
;
5394 struct ixgbe_tx_buffer
*tx_buffer_info
;
5396 unsigned int total
= skb
->len
;
5397 unsigned int offset
= 0, size
, count
= 0, i
;
5398 unsigned int nr_frags
= skb_shinfo(skb
)->nr_frags
;
5401 i
= tx_ring
->next_to_use
;
5403 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
)
5404 /* excluding fcoe_crc_eof for FCoE */
5405 total
-= sizeof(struct fcoe_crc_eof
);
5407 len
= min(skb_headlen(skb
), total
);
5409 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5410 size
= min(len
, (uint
)IXGBE_MAX_DATA_PER_TXD
);
5412 tx_buffer_info
->length
= size
;
5413 tx_buffer_info
->mapped_as_page
= false;
5414 tx_buffer_info
->dma
= pci_map_single(pdev
,
5416 size
, PCI_DMA_TODEVICE
);
5417 if (pci_dma_mapping_error(pdev
, tx_buffer_info
->dma
))
5419 tx_buffer_info
->time_stamp
= jiffies
;
5420 tx_buffer_info
->next_to_watch
= i
;
5429 if (i
== tx_ring
->count
)
5434 for (f
= 0; f
< nr_frags
; f
++) {
5435 struct skb_frag_struct
*frag
;
5437 frag
= &skb_shinfo(skb
)->frags
[f
];
5438 len
= min((unsigned int)frag
->size
, total
);
5439 offset
= frag
->page_offset
;
5443 if (i
== tx_ring
->count
)
5446 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5447 size
= min(len
, (uint
)IXGBE_MAX_DATA_PER_TXD
);
5449 tx_buffer_info
->length
= size
;
5450 tx_buffer_info
->dma
= pci_map_page(adapter
->pdev
,
5454 tx_buffer_info
->mapped_as_page
= true;
5455 if (pci_dma_mapping_error(pdev
, tx_buffer_info
->dma
))
5457 tx_buffer_info
->time_stamp
= jiffies
;
5458 tx_buffer_info
->next_to_watch
= i
;
5469 tx_ring
->tx_buffer_info
[i
].skb
= skb
;
5470 tx_ring
->tx_buffer_info
[first
].next_to_watch
= i
;
5475 dev_err(&pdev
->dev
, "TX DMA map failed\n");
5477 /* clear timestamp and dma mappings for failed tx_buffer_info map */
5478 tx_buffer_info
->dma
= 0;
5479 tx_buffer_info
->time_stamp
= 0;
5480 tx_buffer_info
->next_to_watch
= 0;
5484 /* clear timestamp and dma mappings for remaining portion of packet */
5487 i
+= tx_ring
->count
;
5489 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5490 ixgbe_unmap_and_free_tx_resource(adapter
, tx_buffer_info
);
5496 static void ixgbe_tx_queue(struct ixgbe_adapter
*adapter
,
5497 struct ixgbe_ring
*tx_ring
,
5498 int tx_flags
, int count
, u32 paylen
, u8 hdr_len
)
5500 union ixgbe_adv_tx_desc
*tx_desc
= NULL
;
5501 struct ixgbe_tx_buffer
*tx_buffer_info
;
5502 u32 olinfo_status
= 0, cmd_type_len
= 0;
5504 u32 txd_cmd
= IXGBE_TXD_CMD_EOP
| IXGBE_TXD_CMD_RS
| IXGBE_TXD_CMD_IFCS
;
5506 cmd_type_len
|= IXGBE_ADVTXD_DTYP_DATA
;
5508 cmd_type_len
|= IXGBE_ADVTXD_DCMD_IFCS
| IXGBE_ADVTXD_DCMD_DEXT
;
5510 if (tx_flags
& IXGBE_TX_FLAGS_VLAN
)
5511 cmd_type_len
|= IXGBE_ADVTXD_DCMD_VLE
;
5513 if (tx_flags
& IXGBE_TX_FLAGS_TSO
) {
5514 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
5516 olinfo_status
|= IXGBE_TXD_POPTS_TXSM
<<
5517 IXGBE_ADVTXD_POPTS_SHIFT
;
5519 /* use index 1 context for tso */
5520 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
5521 if (tx_flags
& IXGBE_TX_FLAGS_IPV4
)
5522 olinfo_status
|= IXGBE_TXD_POPTS_IXSM
<<
5523 IXGBE_ADVTXD_POPTS_SHIFT
;
5525 } else if (tx_flags
& IXGBE_TX_FLAGS_CSUM
)
5526 olinfo_status
|= IXGBE_TXD_POPTS_TXSM
<<
5527 IXGBE_ADVTXD_POPTS_SHIFT
;
5529 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
) {
5530 olinfo_status
|= IXGBE_ADVTXD_CC
;
5531 olinfo_status
|= (1 << IXGBE_ADVTXD_IDX_SHIFT
);
5532 if (tx_flags
& IXGBE_TX_FLAGS_FSO
)
5533 cmd_type_len
|= IXGBE_ADVTXD_DCMD_TSE
;
5536 olinfo_status
|= ((paylen
- hdr_len
) << IXGBE_ADVTXD_PAYLEN_SHIFT
);
5538 i
= tx_ring
->next_to_use
;
5540 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5541 tx_desc
= IXGBE_TX_DESC_ADV(*tx_ring
, i
);
5542 tx_desc
->read
.buffer_addr
= cpu_to_le64(tx_buffer_info
->dma
);
5543 tx_desc
->read
.cmd_type_len
=
5544 cpu_to_le32(cmd_type_len
| tx_buffer_info
->length
);
5545 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
5547 if (i
== tx_ring
->count
)
5551 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(txd_cmd
);
5554 * Force memory writes to complete before letting h/w
5555 * know there are new descriptors to fetch. (Only
5556 * applicable for weak-ordered memory model archs,
5561 tx_ring
->next_to_use
= i
;
5562 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
5565 static void ixgbe_atr(struct ixgbe_adapter
*adapter
, struct sk_buff
*skb
,
5566 int queue
, u32 tx_flags
)
5568 /* Right now, we support IPv4 only */
5569 struct ixgbe_atr_input atr_input
;
5571 struct iphdr
*iph
= ip_hdr(skb
);
5572 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
5573 u16 vlan_id
, src_port
, dst_port
, flex_bytes
;
5574 u32 src_ipv4_addr
, dst_ipv4_addr
;
5577 /* check if we're UDP or TCP */
5578 if (iph
->protocol
== IPPROTO_TCP
) {
5580 src_port
= th
->source
;
5581 dst_port
= th
->dest
;
5582 l4type
|= IXGBE_ATR_L4TYPE_TCP
;
5583 /* l4type IPv4 type is 0, no need to assign */
5585 /* Unsupported L4 header, just bail here */
5589 memset(&atr_input
, 0, sizeof(struct ixgbe_atr_input
));
5591 vlan_id
= (tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
) >>
5592 IXGBE_TX_FLAGS_VLAN_SHIFT
;
5593 src_ipv4_addr
= iph
->saddr
;
5594 dst_ipv4_addr
= iph
->daddr
;
5595 flex_bytes
= eth
->h_proto
;
5597 ixgbe_atr_set_vlan_id_82599(&atr_input
, vlan_id
);
5598 ixgbe_atr_set_src_port_82599(&atr_input
, dst_port
);
5599 ixgbe_atr_set_dst_port_82599(&atr_input
, src_port
);
5600 ixgbe_atr_set_flex_byte_82599(&atr_input
, flex_bytes
);
5601 ixgbe_atr_set_l4type_82599(&atr_input
, l4type
);
5602 /* src and dst are inverted, think how the receiver sees them */
5603 ixgbe_atr_set_src_ipv4_82599(&atr_input
, dst_ipv4_addr
);
5604 ixgbe_atr_set_dst_ipv4_82599(&atr_input
, src_ipv4_addr
);
5606 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
5607 ixgbe_fdir_add_signature_filter_82599(&adapter
->hw
, &atr_input
, queue
);
5610 static int __ixgbe_maybe_stop_tx(struct net_device
*netdev
,
5611 struct ixgbe_ring
*tx_ring
, int size
)
5613 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
5614 /* Herbert's original patch had:
5615 * smp_mb__after_netif_stop_queue();
5616 * but since that doesn't exist yet, just open code it. */
5619 /* We need to check again in a case another CPU has just
5620 * made room available. */
5621 if (likely(IXGBE_DESC_UNUSED(tx_ring
) < size
))
5624 /* A reprieve! - use start_queue because it doesn't call schedule */
5625 netif_start_subqueue(netdev
, tx_ring
->queue_index
);
5626 ++tx_ring
->restart_queue
;
5630 static int ixgbe_maybe_stop_tx(struct net_device
*netdev
,
5631 struct ixgbe_ring
*tx_ring
, int size
)
5633 if (likely(IXGBE_DESC_UNUSED(tx_ring
) >= size
))
5635 return __ixgbe_maybe_stop_tx(netdev
, tx_ring
, size
);
5638 static u16
ixgbe_select_queue(struct net_device
*dev
, struct sk_buff
*skb
)
5640 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
5641 int txq
= smp_processor_id();
5643 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
5644 while (unlikely(txq
>= dev
->real_num_tx_queues
))
5645 txq
-= dev
->real_num_tx_queues
;
5650 if ((adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) &&
5651 ((skb
->protocol
== htons(ETH_P_FCOE
)) ||
5652 (skb
->protocol
== htons(ETH_P_FIP
)))) {
5653 txq
&= (adapter
->ring_feature
[RING_F_FCOE
].indices
- 1);
5654 txq
+= adapter
->ring_feature
[RING_F_FCOE
].mask
;
5658 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
5659 if (skb
->priority
== TC_PRIO_CONTROL
)
5660 txq
= adapter
->ring_feature
[RING_F_DCB
].indices
-1;
5662 txq
= (skb
->vlan_tci
& IXGBE_TX_FLAGS_VLAN_PRIO_MASK
)
5667 return skb_tx_hash(dev
, skb
);
5670 static netdev_tx_t
ixgbe_xmit_frame(struct sk_buff
*skb
,
5671 struct net_device
*netdev
)
5673 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5674 struct ixgbe_ring
*tx_ring
;
5675 struct netdev_queue
*txq
;
5677 unsigned int tx_flags
= 0;
5683 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
5684 tx_flags
|= vlan_tx_tag_get(skb
);
5685 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
5686 tx_flags
&= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK
;
5687 tx_flags
|= ((skb
->queue_mapping
& 0x7) << 13);
5689 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
5690 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
5691 } else if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) {
5692 tx_flags
|= ((skb
->queue_mapping
& 0x7) << 13);
5693 tx_flags
<<= IXGBE_TX_FLAGS_VLAN_SHIFT
;
5694 tx_flags
|= IXGBE_TX_FLAGS_VLAN
;
5697 tx_ring
= adapter
->tx_ring
[skb
->queue_mapping
];
5700 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) {
5701 #ifdef CONFIG_IXGBE_DCB
5702 /* for FCoE with DCB, we force the priority to what
5703 * was specified by the switch */
5704 if ((skb
->protocol
== htons(ETH_P_FCOE
)) ||
5705 (skb
->protocol
== htons(ETH_P_FIP
))) {
5706 tx_flags
&= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
5707 << IXGBE_TX_FLAGS_VLAN_SHIFT
);
5708 tx_flags
|= ((adapter
->fcoe
.up
<< 13)
5709 << IXGBE_TX_FLAGS_VLAN_SHIFT
);
5712 /* flag for FCoE offloads */
5713 if (skb
->protocol
== htons(ETH_P_FCOE
))
5714 tx_flags
|= IXGBE_TX_FLAGS_FCOE
;
5718 /* four things can cause us to need a context descriptor */
5719 if (skb_is_gso(skb
) ||
5720 (skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
5721 (tx_flags
& IXGBE_TX_FLAGS_VLAN
) ||
5722 (tx_flags
& IXGBE_TX_FLAGS_FCOE
))
5725 count
+= TXD_USE_COUNT(skb_headlen(skb
));
5726 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
5727 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
5729 if (ixgbe_maybe_stop_tx(netdev
, tx_ring
, count
)) {
5731 return NETDEV_TX_BUSY
;
5734 first
= tx_ring
->next_to_use
;
5735 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
) {
5737 /* setup tx offload for FCoE */
5738 tso
= ixgbe_fso(adapter
, tx_ring
, skb
, tx_flags
, &hdr_len
);
5740 dev_kfree_skb_any(skb
);
5741 return NETDEV_TX_OK
;
5744 tx_flags
|= IXGBE_TX_FLAGS_FSO
;
5745 #endif /* IXGBE_FCOE */
5747 if (skb
->protocol
== htons(ETH_P_IP
))
5748 tx_flags
|= IXGBE_TX_FLAGS_IPV4
;
5749 tso
= ixgbe_tso(adapter
, tx_ring
, skb
, tx_flags
, &hdr_len
);
5751 dev_kfree_skb_any(skb
);
5752 return NETDEV_TX_OK
;
5756 tx_flags
|= IXGBE_TX_FLAGS_TSO
;
5757 else if (ixgbe_tx_csum(adapter
, tx_ring
, skb
, tx_flags
) &&
5758 (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5759 tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
5762 count
= ixgbe_tx_map(adapter
, tx_ring
, skb
, tx_flags
, first
);
5764 /* add the ATR filter if ATR is on */
5765 if (tx_ring
->atr_sample_rate
) {
5766 ++tx_ring
->atr_count
;
5767 if ((tx_ring
->atr_count
>= tx_ring
->atr_sample_rate
) &&
5768 test_bit(__IXGBE_FDIR_INIT_DONE
,
5769 &tx_ring
->reinit_state
)) {
5770 ixgbe_atr(adapter
, skb
, tx_ring
->queue_index
,
5772 tx_ring
->atr_count
= 0;
5775 txq
= netdev_get_tx_queue(netdev
, tx_ring
->queue_index
);
5776 txq
->tx_bytes
+= skb
->len
;
5778 ixgbe_tx_queue(adapter
, tx_ring
, tx_flags
, count
, skb
->len
,
5780 ixgbe_maybe_stop_tx(netdev
, tx_ring
, DESC_NEEDED
);
5783 dev_kfree_skb_any(skb
);
5784 tx_ring
->tx_buffer_info
[first
].time_stamp
= 0;
5785 tx_ring
->next_to_use
= first
;
5788 return NETDEV_TX_OK
;
5792 * ixgbe_set_mac - Change the Ethernet Address of the NIC
5793 * @netdev: network interface device structure
5794 * @p: pointer to an address structure
5796 * Returns 0 on success, negative on failure
5798 static int ixgbe_set_mac(struct net_device
*netdev
, void *p
)
5800 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5801 struct ixgbe_hw
*hw
= &adapter
->hw
;
5802 struct sockaddr
*addr
= p
;
5804 if (!is_valid_ether_addr(addr
->sa_data
))
5805 return -EADDRNOTAVAIL
;
5807 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
5808 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
5810 hw
->mac
.ops
.set_rar(hw
, 0, hw
->mac
.addr
, adapter
->num_vfs
,
5817 ixgbe_mdio_read(struct net_device
*netdev
, int prtad
, int devad
, u16 addr
)
5819 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5820 struct ixgbe_hw
*hw
= &adapter
->hw
;
5824 if (prtad
!= hw
->phy
.mdio
.prtad
)
5826 rc
= hw
->phy
.ops
.read_reg(hw
, addr
, devad
, &value
);
5832 static int ixgbe_mdio_write(struct net_device
*netdev
, int prtad
, int devad
,
5833 u16 addr
, u16 value
)
5835 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5836 struct ixgbe_hw
*hw
= &adapter
->hw
;
5838 if (prtad
!= hw
->phy
.mdio
.prtad
)
5840 return hw
->phy
.ops
.write_reg(hw
, addr
, devad
, value
);
5843 static int ixgbe_ioctl(struct net_device
*netdev
, struct ifreq
*req
, int cmd
)
5845 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5847 return mdio_mii_ioctl(&adapter
->hw
.phy
.mdio
, if_mii(req
), cmd
);
5851 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
5853 * @netdev: network interface device structure
5855 * Returns non-zero on failure
5857 static int ixgbe_add_sanmac_netdev(struct net_device
*dev
)
5860 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
5861 struct ixgbe_mac_info
*mac
= &adapter
->hw
.mac
;
5863 if (is_valid_ether_addr(mac
->san_addr
)) {
5865 err
= dev_addr_add(dev
, mac
->san_addr
, NETDEV_HW_ADDR_T_SAN
);
5872 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
5874 * @netdev: network interface device structure
5876 * Returns non-zero on failure
5878 static int ixgbe_del_sanmac_netdev(struct net_device
*dev
)
5881 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
5882 struct ixgbe_mac_info
*mac
= &adapter
->hw
.mac
;
5884 if (is_valid_ether_addr(mac
->san_addr
)) {
5886 err
= dev_addr_del(dev
, mac
->san_addr
, NETDEV_HW_ADDR_T_SAN
);
5892 #ifdef CONFIG_NET_POLL_CONTROLLER
5894 * Polling 'interrupt' - used by things like netconsole to send skbs
5895 * without having to re-enable interrupts. It's not called while
5896 * the interrupt routine is executing.
5898 static void ixgbe_netpoll(struct net_device
*netdev
)
5900 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5903 /* if interface is down do nothing */
5904 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
5907 adapter
->flags
|= IXGBE_FLAG_IN_NETPOLL
;
5908 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
5909 int num_q_vectors
= adapter
->num_msix_vectors
- NON_Q_VECTORS
;
5910 for (i
= 0; i
< num_q_vectors
; i
++) {
5911 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[i
];
5912 ixgbe_msix_clean_many(0, q_vector
);
5915 ixgbe_intr(adapter
->pdev
->irq
, netdev
);
5917 adapter
->flags
&= ~IXGBE_FLAG_IN_NETPOLL
;
5921 static const struct net_device_ops ixgbe_netdev_ops
= {
5922 .ndo_open
= ixgbe_open
,
5923 .ndo_stop
= ixgbe_close
,
5924 .ndo_start_xmit
= ixgbe_xmit_frame
,
5925 .ndo_select_queue
= ixgbe_select_queue
,
5926 .ndo_set_rx_mode
= ixgbe_set_rx_mode
,
5927 .ndo_set_multicast_list
= ixgbe_set_rx_mode
,
5928 .ndo_validate_addr
= eth_validate_addr
,
5929 .ndo_set_mac_address
= ixgbe_set_mac
,
5930 .ndo_change_mtu
= ixgbe_change_mtu
,
5931 .ndo_tx_timeout
= ixgbe_tx_timeout
,
5932 .ndo_vlan_rx_register
= ixgbe_vlan_rx_register
,
5933 .ndo_vlan_rx_add_vid
= ixgbe_vlan_rx_add_vid
,
5934 .ndo_vlan_rx_kill_vid
= ixgbe_vlan_rx_kill_vid
,
5935 .ndo_do_ioctl
= ixgbe_ioctl
,
5936 #ifdef CONFIG_NET_POLL_CONTROLLER
5937 .ndo_poll_controller
= ixgbe_netpoll
,
5940 .ndo_fcoe_ddp_setup
= ixgbe_fcoe_ddp_get
,
5941 .ndo_fcoe_ddp_done
= ixgbe_fcoe_ddp_put
,
5942 .ndo_fcoe_enable
= ixgbe_fcoe_enable
,
5943 .ndo_fcoe_disable
= ixgbe_fcoe_disable
,
5944 .ndo_fcoe_get_wwn
= ixgbe_fcoe_get_wwn
,
5945 #endif /* IXGBE_FCOE */
5948 static void __devinit
ixgbe_probe_vf(struct ixgbe_adapter
*adapter
,
5949 const struct ixgbe_info
*ii
)
5951 #ifdef CONFIG_PCI_IOV
5952 struct ixgbe_hw
*hw
= &adapter
->hw
;
5955 if (hw
->mac
.type
!= ixgbe_mac_82599EB
|| !max_vfs
)
5958 /* The 82599 supports up to 64 VFs per physical function
5959 * but this implementation limits allocation to 63 so that
5960 * basic networking resources are still available to the
5963 adapter
->num_vfs
= (max_vfs
> 63) ? 63 : max_vfs
;
5964 adapter
->flags
|= IXGBE_FLAG_SRIOV_ENABLED
;
5965 err
= pci_enable_sriov(adapter
->pdev
, adapter
->num_vfs
);
5968 "Failed to enable PCI sriov: %d\n", err
);
5971 /* If call to enable VFs succeeded then allocate memory
5972 * for per VF control structures.
5975 kcalloc(adapter
->num_vfs
,
5976 sizeof(struct vf_data_storage
), GFP_KERNEL
);
5977 if (adapter
->vfinfo
) {
5978 /* Now that we're sure SR-IOV is enabled
5979 * and memory allocated set up the mailbox parameters
5981 ixgbe_init_mbx_params_pf(hw
);
5982 memcpy(&hw
->mbx
.ops
, ii
->mbx_ops
,
5983 sizeof(hw
->mbx
.ops
));
5985 /* Disable RSC when in SR-IOV mode */
5986 adapter
->flags2
&= ~(IXGBE_FLAG2_RSC_CAPABLE
|
5987 IXGBE_FLAG2_RSC_ENABLED
);
5993 "Unable to allocate memory for VF "
5994 "Data Storage - SRIOV disabled\n");
5995 pci_disable_sriov(adapter
->pdev
);
5998 adapter
->flags
&= ~IXGBE_FLAG_SRIOV_ENABLED
;
5999 adapter
->num_vfs
= 0;
6000 #endif /* CONFIG_PCI_IOV */
6004 * ixgbe_probe - Device Initialization Routine
6005 * @pdev: PCI device information struct
6006 * @ent: entry in ixgbe_pci_tbl
6008 * Returns 0 on success, negative on failure
6010 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
6011 * The OS initialization, configuring of the adapter private structure,
6012 * and a hardware reset occur.
6014 static int __devinit
ixgbe_probe(struct pci_dev
*pdev
,
6015 const struct pci_device_id
*ent
)
6017 struct net_device
*netdev
;
6018 struct ixgbe_adapter
*adapter
= NULL
;
6019 struct ixgbe_hw
*hw
;
6020 const struct ixgbe_info
*ii
= ixgbe_info_tbl
[ent
->driver_data
];
6021 static int cards_found
;
6022 int i
, err
, pci_using_dac
;
6023 unsigned int indices
= num_possible_cpus();
6029 err
= pci_enable_device_mem(pdev
);
6033 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)) &&
6034 !pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64))) {
6037 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
6039 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
6041 dev_err(&pdev
->dev
, "No usable DMA "
6042 "configuration, aborting\n");
6049 err
= pci_request_selected_regions(pdev
, pci_select_bars(pdev
,
6050 IORESOURCE_MEM
), ixgbe_driver_name
);
6053 "pci_request_selected_regions failed 0x%x\n", err
);
6057 pci_enable_pcie_error_reporting(pdev
);
6059 pci_set_master(pdev
);
6060 pci_save_state(pdev
);
6062 if (ii
->mac
== ixgbe_mac_82598EB
)
6063 indices
= min_t(unsigned int, indices
, IXGBE_MAX_RSS_INDICES
);
6065 indices
= min_t(unsigned int, indices
, IXGBE_MAX_FDIR_INDICES
);
6067 indices
= max_t(unsigned int, indices
, IXGBE_MAX_DCB_INDICES
);
6069 indices
+= min_t(unsigned int, num_possible_cpus(),
6070 IXGBE_MAX_FCOE_INDICES
);
6072 netdev
= alloc_etherdev_mq(sizeof(struct ixgbe_adapter
), indices
);
6075 goto err_alloc_etherdev
;
6078 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6080 pci_set_drvdata(pdev
, netdev
);
6081 adapter
= netdev_priv(netdev
);
6083 adapter
->netdev
= netdev
;
6084 adapter
->pdev
= pdev
;
6087 adapter
->msg_enable
= (1 << DEFAULT_DEBUG_LEVEL_SHIFT
) - 1;
6089 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
6090 pci_resource_len(pdev
, 0));
6096 for (i
= 1; i
<= 5; i
++) {
6097 if (pci_resource_len(pdev
, i
) == 0)
6101 netdev
->netdev_ops
= &ixgbe_netdev_ops
;
6102 ixgbe_set_ethtool_ops(netdev
);
6103 netdev
->watchdog_timeo
= 5 * HZ
;
6104 strcpy(netdev
->name
, pci_name(pdev
));
6106 adapter
->bd_number
= cards_found
;
6109 memcpy(&hw
->mac
.ops
, ii
->mac_ops
, sizeof(hw
->mac
.ops
));
6110 hw
->mac
.type
= ii
->mac
;
6113 memcpy(&hw
->eeprom
.ops
, ii
->eeprom_ops
, sizeof(hw
->eeprom
.ops
));
6114 eec
= IXGBE_READ_REG(hw
, IXGBE_EEC
);
6115 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
6116 if (!(eec
& (1 << 8)))
6117 hw
->eeprom
.ops
.read
= &ixgbe_read_eeprom_bit_bang_generic
;
6120 memcpy(&hw
->phy
.ops
, ii
->phy_ops
, sizeof(hw
->phy
.ops
));
6121 hw
->phy
.sfp_type
= ixgbe_sfp_type_unknown
;
6122 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
6123 hw
->phy
.mdio
.prtad
= MDIO_PRTAD_NONE
;
6124 hw
->phy
.mdio
.mmds
= 0;
6125 hw
->phy
.mdio
.mode_support
= MDIO_SUPPORTS_C45
| MDIO_EMULATE_C22
;
6126 hw
->phy
.mdio
.dev
= netdev
;
6127 hw
->phy
.mdio
.mdio_read
= ixgbe_mdio_read
;
6128 hw
->phy
.mdio
.mdio_write
= ixgbe_mdio_write
;
6130 /* set up this timer and work struct before calling get_invariants
6131 * which might start the timer
6133 init_timer(&adapter
->sfp_timer
);
6134 adapter
->sfp_timer
.function
= &ixgbe_sfp_timer
;
6135 adapter
->sfp_timer
.data
= (unsigned long) adapter
;
6137 INIT_WORK(&adapter
->sfp_task
, ixgbe_sfp_task
);
6139 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
6140 INIT_WORK(&adapter
->multispeed_fiber_task
, ixgbe_multispeed_fiber_task
);
6142 /* a new SFP+ module arrival, called from GPI SDP2 context */
6143 INIT_WORK(&adapter
->sfp_config_module_task
,
6144 ixgbe_sfp_config_module_task
);
6146 ii
->get_invariants(hw
);
6148 /* setup the private structure */
6149 err
= ixgbe_sw_init(adapter
);
6153 /* Make it possible the adapter to be woken up via WOL */
6154 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
)
6155 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
6158 * If there is a fan on this device and it has failed log the
6161 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
6162 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
6163 if (esdp
& IXGBE_ESDP_SDP1
)
6164 DPRINTK(PROBE
, CRIT
,
6165 "Fan has stopped, replace the adapter\n");
6168 /* reset_hw fills in the perm_addr as well */
6169 err
= hw
->mac
.ops
.reset_hw(hw
);
6170 if (err
== IXGBE_ERR_SFP_NOT_PRESENT
&&
6171 hw
->mac
.type
== ixgbe_mac_82598EB
) {
6173 * Start a kernel thread to watch for a module to arrive.
6174 * Only do this for 82598, since 82599 will generate
6175 * interrupts on module arrival.
6177 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
6178 mod_timer(&adapter
->sfp_timer
,
6179 round_jiffies(jiffies
+ (2 * HZ
)));
6181 } else if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
6182 dev_err(&adapter
->pdev
->dev
, "failed to initialize because "
6183 "an unsupported SFP+ module type was detected.\n"
6184 "Reload the driver after installing a supported "
6188 dev_err(&adapter
->pdev
->dev
, "HW Init failed: %d\n", err
);
6192 ixgbe_probe_vf(adapter
, ii
);
6194 netdev
->features
= NETIF_F_SG
|
6196 NETIF_F_HW_VLAN_TX
|
6197 NETIF_F_HW_VLAN_RX
|
6198 NETIF_F_HW_VLAN_FILTER
;
6200 netdev
->features
|= NETIF_F_IPV6_CSUM
;
6201 netdev
->features
|= NETIF_F_TSO
;
6202 netdev
->features
|= NETIF_F_TSO6
;
6203 netdev
->features
|= NETIF_F_GRO
;
6205 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
)
6206 netdev
->features
|= NETIF_F_SCTP_CSUM
;
6208 netdev
->vlan_features
|= NETIF_F_TSO
;
6209 netdev
->vlan_features
|= NETIF_F_TSO6
;
6210 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
6211 netdev
->vlan_features
|= NETIF_F_IPV6_CSUM
;
6212 netdev
->vlan_features
|= NETIF_F_SG
;
6214 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
6215 adapter
->flags
&= ~(IXGBE_FLAG_RSS_ENABLED
|
6216 IXGBE_FLAG_DCB_ENABLED
);
6217 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)
6218 adapter
->flags
&= ~IXGBE_FLAG_RSS_ENABLED
;
6220 #ifdef CONFIG_IXGBE_DCB
6221 netdev
->dcbnl_ops
= &dcbnl_ops
;
6225 if (adapter
->flags
& IXGBE_FLAG_FCOE_CAPABLE
) {
6226 if (hw
->mac
.ops
.get_device_caps
) {
6227 hw
->mac
.ops
.get_device_caps(hw
, &device_caps
);
6228 if (device_caps
& IXGBE_DEVICE_CAPS_FCOE_OFFLOADS
)
6229 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
6232 #endif /* IXGBE_FCOE */
6234 netdev
->features
|= NETIF_F_HIGHDMA
;
6236 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
6237 netdev
->features
|= NETIF_F_LRO
;
6239 /* make sure the EEPROM is good */
6240 if (hw
->eeprom
.ops
.validate_checksum(hw
, NULL
) < 0) {
6241 dev_err(&pdev
->dev
, "The EEPROM Checksum Is Not Valid\n");
6246 memcpy(netdev
->dev_addr
, hw
->mac
.perm_addr
, netdev
->addr_len
);
6247 memcpy(netdev
->perm_addr
, hw
->mac
.perm_addr
, netdev
->addr_len
);
6249 if (ixgbe_validate_mac_addr(netdev
->perm_addr
)) {
6250 dev_err(&pdev
->dev
, "invalid MAC address\n");
6255 init_timer(&adapter
->watchdog_timer
);
6256 adapter
->watchdog_timer
.function
= &ixgbe_watchdog
;
6257 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
6259 INIT_WORK(&adapter
->reset_task
, ixgbe_reset_task
);
6260 INIT_WORK(&adapter
->watchdog_task
, ixgbe_watchdog_task
);
6262 err
= ixgbe_init_interrupt_scheme(adapter
);
6266 switch (pdev
->device
) {
6267 case IXGBE_DEV_ID_82599_KX4
:
6268 adapter
->wol
= (IXGBE_WUFC_MAG
| IXGBE_WUFC_EX
|
6269 IXGBE_WUFC_MC
| IXGBE_WUFC_BC
);
6275 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
6277 /* pick up the PCI bus settings for reporting later */
6278 hw
->mac
.ops
.get_bus_info(hw
);
6280 /* print bus type/speed/width info */
6281 dev_info(&pdev
->dev
, "(PCI Express:%s:%s) %pM\n",
6282 ((hw
->bus
.speed
== ixgbe_bus_speed_5000
) ? "5.0Gb/s":
6283 (hw
->bus
.speed
== ixgbe_bus_speed_2500
) ? "2.5Gb/s":"Unknown"),
6284 ((hw
->bus
.width
== ixgbe_bus_width_pcie_x8
) ? "Width x8" :
6285 (hw
->bus
.width
== ixgbe_bus_width_pcie_x4
) ? "Width x4" :
6286 (hw
->bus
.width
== ixgbe_bus_width_pcie_x1
) ? "Width x1" :
6289 ixgbe_read_pba_num_generic(hw
, &part_num
);
6290 if (ixgbe_is_sfp(hw
) && hw
->phy
.sfp_type
!= ixgbe_sfp_type_not_present
)
6291 dev_info(&pdev
->dev
, "MAC: %d, PHY: %d, SFP+: %d, PBA No: %06x-%03x\n",
6292 hw
->mac
.type
, hw
->phy
.type
, hw
->phy
.sfp_type
,
6293 (part_num
>> 8), (part_num
& 0xff));
6295 dev_info(&pdev
->dev
, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
6296 hw
->mac
.type
, hw
->phy
.type
,
6297 (part_num
>> 8), (part_num
& 0xff));
6299 if (hw
->bus
.width
<= ixgbe_bus_width_pcie_x4
) {
6300 dev_warn(&pdev
->dev
, "PCI-Express bandwidth available for "
6301 "this card is not sufficient for optimal "
6303 dev_warn(&pdev
->dev
, "For optimal performance a x8 "
6304 "PCI-Express slot is required.\n");
6307 /* save off EEPROM version number */
6308 hw
->eeprom
.ops
.read(hw
, 0x29, &adapter
->eeprom_version
);
6310 /* reset the hardware with the new settings */
6311 err
= hw
->mac
.ops
.start_hw(hw
);
6313 if (err
== IXGBE_ERR_EEPROM_VERSION
) {
6314 /* We are running on a pre-production device, log a warning */
6315 dev_warn(&pdev
->dev
, "This device is a pre-production "
6316 "adapter/LOM. Please be aware there may be issues "
6317 "associated with your hardware. If you are "
6318 "experiencing problems please contact your Intel or "
6319 "hardware representative who provided you with this "
6322 strcpy(netdev
->name
, "eth%d");
6323 err
= register_netdev(netdev
);
6327 /* carrier off reporting is important to ethtool even BEFORE open */
6328 netif_carrier_off(netdev
);
6330 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
6331 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
6332 INIT_WORK(&adapter
->fdir_reinit_task
, ixgbe_fdir_reinit_task
);
6334 #ifdef CONFIG_IXGBE_DCA
6335 if (dca_add_requester(&pdev
->dev
) == 0) {
6336 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
6337 ixgbe_setup_dca(adapter
);
6340 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
6341 DPRINTK(PROBE
, INFO
, "IOV is enabled with %d VFs\n",
6343 for (i
= 0; i
< adapter
->num_vfs
; i
++)
6344 ixgbe_vf_configuration(pdev
, (i
| 0x10000000));
6347 /* add san mac addr to netdev */
6348 ixgbe_add_sanmac_netdev(netdev
);
6350 dev_info(&pdev
->dev
, "Intel(R) 10 Gigabit Network Connection\n");
6355 ixgbe_release_hw_control(adapter
);
6356 ixgbe_clear_interrupt_scheme(adapter
);
6359 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
6360 ixgbe_disable_sriov(adapter
);
6361 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
6362 del_timer_sync(&adapter
->sfp_timer
);
6363 cancel_work_sync(&adapter
->sfp_task
);
6364 cancel_work_sync(&adapter
->multispeed_fiber_task
);
6365 cancel_work_sync(&adapter
->sfp_config_module_task
);
6366 iounmap(hw
->hw_addr
);
6368 free_netdev(netdev
);
6370 pci_release_selected_regions(pdev
, pci_select_bars(pdev
,
6374 pci_disable_device(pdev
);
6379 * ixgbe_remove - Device Removal Routine
6380 * @pdev: PCI device information struct
6382 * ixgbe_remove is called by the PCI subsystem to alert the driver
6383 * that it should release a PCI device. The could be caused by a
6384 * Hot-Plug event, or because the driver is going to be removed from
6387 static void __devexit
ixgbe_remove(struct pci_dev
*pdev
)
6389 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6390 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6392 set_bit(__IXGBE_DOWN
, &adapter
->state
);
6393 /* clear the module not found bit to make sure the worker won't
6396 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND
, &adapter
->state
);
6397 del_timer_sync(&adapter
->watchdog_timer
);
6399 del_timer_sync(&adapter
->sfp_timer
);
6400 cancel_work_sync(&adapter
->watchdog_task
);
6401 cancel_work_sync(&adapter
->sfp_task
);
6402 if (adapter
->hw
.phy
.multispeed_fiber
) {
6403 struct ixgbe_hw
*hw
= &adapter
->hw
;
6405 * Restart clause 37 autoneg, disable and re-enable
6406 * the tx laser, to clear & alert the link partner
6407 * that it needs to restart autotry
6409 hw
->mac
.autotry_restart
= true;
6410 hw
->mac
.ops
.flap_tx_laser(hw
);
6412 cancel_work_sync(&adapter
->multispeed_fiber_task
);
6413 cancel_work_sync(&adapter
->sfp_config_module_task
);
6414 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
6415 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
6416 cancel_work_sync(&adapter
->fdir_reinit_task
);
6417 flush_scheduled_work();
6419 #ifdef CONFIG_IXGBE_DCA
6420 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
6421 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
6422 dca_remove_requester(&pdev
->dev
);
6423 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
, 1);
6428 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
6429 ixgbe_cleanup_fcoe(adapter
);
6431 #endif /* IXGBE_FCOE */
6433 /* remove the added san mac */
6434 ixgbe_del_sanmac_netdev(netdev
);
6436 if (netdev
->reg_state
== NETREG_REGISTERED
)
6437 unregister_netdev(netdev
);
6439 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
6440 ixgbe_disable_sriov(adapter
);
6442 ixgbe_clear_interrupt_scheme(adapter
);
6444 ixgbe_release_hw_control(adapter
);
6446 iounmap(adapter
->hw
.hw_addr
);
6447 pci_release_selected_regions(pdev
, pci_select_bars(pdev
,
6450 DPRINTK(PROBE
, INFO
, "complete\n");
6452 free_netdev(netdev
);
6454 pci_disable_pcie_error_reporting(pdev
);
6456 pci_disable_device(pdev
);
6460 * ixgbe_io_error_detected - called when PCI error is detected
6461 * @pdev: Pointer to PCI device
6462 * @state: The current pci connection state
6464 * This function is called after a PCI bus error affecting
6465 * this device has been detected.
6467 static pci_ers_result_t
ixgbe_io_error_detected(struct pci_dev
*pdev
,
6468 pci_channel_state_t state
)
6470 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6471 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6473 netif_device_detach(netdev
);
6475 if (state
== pci_channel_io_perm_failure
)
6476 return PCI_ERS_RESULT_DISCONNECT
;
6478 if (netif_running(netdev
))
6479 ixgbe_down(adapter
);
6480 pci_disable_device(pdev
);
6482 /* Request a slot reset. */
6483 return PCI_ERS_RESULT_NEED_RESET
;
6487 * ixgbe_io_slot_reset - called after the pci bus has been reset.
6488 * @pdev: Pointer to PCI device
6490 * Restart the card from scratch, as if from a cold-boot.
6492 static pci_ers_result_t
ixgbe_io_slot_reset(struct pci_dev
*pdev
)
6494 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6495 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6496 pci_ers_result_t result
;
6499 if (pci_enable_device_mem(pdev
)) {
6501 "Cannot re-enable PCI device after reset.\n");
6502 result
= PCI_ERS_RESULT_DISCONNECT
;
6504 pci_set_master(pdev
);
6505 pci_restore_state(pdev
);
6506 pci_save_state(pdev
);
6508 pci_wake_from_d3(pdev
, false);
6510 ixgbe_reset(adapter
);
6511 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
6512 result
= PCI_ERS_RESULT_RECOVERED
;
6515 err
= pci_cleanup_aer_uncorrect_error_status(pdev
);
6518 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err
);
6519 /* non-fatal, continue */
6526 * ixgbe_io_resume - called when traffic can start flowing again.
6527 * @pdev: Pointer to PCI device
6529 * This callback is called when the error recovery driver tells us that
6530 * its OK to resume normal operation.
6532 static void ixgbe_io_resume(struct pci_dev
*pdev
)
6534 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6535 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6537 if (netif_running(netdev
)) {
6538 if (ixgbe_up(adapter
)) {
6539 DPRINTK(PROBE
, INFO
, "ixgbe_up failed after reset\n");
6544 netif_device_attach(netdev
);
6547 static struct pci_error_handlers ixgbe_err_handler
= {
6548 .error_detected
= ixgbe_io_error_detected
,
6549 .slot_reset
= ixgbe_io_slot_reset
,
6550 .resume
= ixgbe_io_resume
,
6553 static struct pci_driver ixgbe_driver
= {
6554 .name
= ixgbe_driver_name
,
6555 .id_table
= ixgbe_pci_tbl
,
6556 .probe
= ixgbe_probe
,
6557 .remove
= __devexit_p(ixgbe_remove
),
6559 .suspend
= ixgbe_suspend
,
6560 .resume
= ixgbe_resume
,
6562 .shutdown
= ixgbe_shutdown
,
6563 .err_handler
= &ixgbe_err_handler
6567 * ixgbe_init_module - Driver Registration Routine
6569 * ixgbe_init_module is the first routine called when the driver is
6570 * loaded. All it does is register with the PCI subsystem.
6572 static int __init
ixgbe_init_module(void)
6575 printk(KERN_INFO
"%s: %s - version %s\n", ixgbe_driver_name
,
6576 ixgbe_driver_string
, ixgbe_driver_version
);
6578 printk(KERN_INFO
"%s: %s\n", ixgbe_driver_name
, ixgbe_copyright
);
6580 #ifdef CONFIG_IXGBE_DCA
6581 dca_register_notify(&dca_notifier
);
6584 ret
= pci_register_driver(&ixgbe_driver
);
6588 module_init(ixgbe_init_module
);
6591 * ixgbe_exit_module - Driver Exit Cleanup Routine
6593 * ixgbe_exit_module is called just before the driver is removed
6596 static void __exit
ixgbe_exit_module(void)
6598 #ifdef CONFIG_IXGBE_DCA
6599 dca_unregister_notify(&dca_notifier
);
6601 pci_unregister_driver(&ixgbe_driver
);
6604 #ifdef CONFIG_IXGBE_DCA
6605 static int ixgbe_notify_dca(struct notifier_block
*nb
, unsigned long event
,
6610 ret_val
= driver_for_each_device(&ixgbe_driver
.driver
, NULL
, &event
,
6611 __ixgbe_notify_dca
);
6613 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
6616 #endif /* CONFIG_IXGBE_DCA */
6619 * ixgbe_get_hw_dev_name - return device name string
6620 * used by hardware layer to print debugging information
6622 char *ixgbe_get_hw_dev_name(struct ixgbe_hw
*hw
)
6624 struct ixgbe_adapter
*adapter
= hw
->back
;
6625 return adapter
->netdev
->name
;
6629 module_exit(ixgbe_exit_module
);