1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007 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/module.h>
29 #include <linux/types.h>
30 #include <linux/init.h>
31 #include <linux/vmalloc.h>
32 #include <linux/pagemap.h>
33 #include <linux/netdevice.h>
34 #include <linux/ipv6.h>
35 #include <net/checksum.h>
36 #include <net/ip6_checksum.h>
37 #include <linux/mii.h>
38 #include <linux/ethtool.h>
39 #include <linux/if_vlan.h>
40 #include <linux/pci.h>
41 #include <linux/pci-aspm.h>
42 #include <linux/delay.h>
43 #include <linux/interrupt.h>
44 #include <linux/if_ether.h>
45 #include <linux/aer.h>
47 #include <linux/dca.h>
51 #define DRV_VERSION "1.2.45-k2"
52 char igb_driver_name
[] = "igb";
53 char igb_driver_version
[] = DRV_VERSION
;
54 static const char igb_driver_string
[] =
55 "Intel(R) Gigabit Ethernet Network Driver";
56 static const char igb_copyright
[] = "Copyright (c) 2008 Intel Corporation.";
58 static const struct e1000_info
*igb_info_tbl
[] = {
59 [board_82575
] = &e1000_82575_info
,
62 static struct pci_device_id igb_pci_tbl
[] = {
63 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576
), board_82575
},
64 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_FIBER
), board_82575
},
65 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_SERDES
), board_82575
},
66 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575EB_COPPER
), board_82575
},
67 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575EB_FIBER_SERDES
), board_82575
},
68 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575GB_QUAD_COPPER
), board_82575
},
69 /* required last entry */
73 MODULE_DEVICE_TABLE(pci
, igb_pci_tbl
);
75 void igb_reset(struct igb_adapter
*);
76 static int igb_setup_all_tx_resources(struct igb_adapter
*);
77 static int igb_setup_all_rx_resources(struct igb_adapter
*);
78 static void igb_free_all_tx_resources(struct igb_adapter
*);
79 static void igb_free_all_rx_resources(struct igb_adapter
*);
80 void igb_update_stats(struct igb_adapter
*);
81 static int igb_probe(struct pci_dev
*, const struct pci_device_id
*);
82 static void __devexit
igb_remove(struct pci_dev
*pdev
);
83 static int igb_sw_init(struct igb_adapter
*);
84 static int igb_open(struct net_device
*);
85 static int igb_close(struct net_device
*);
86 static void igb_configure_tx(struct igb_adapter
*);
87 static void igb_configure_rx(struct igb_adapter
*);
88 static void igb_setup_rctl(struct igb_adapter
*);
89 static void igb_clean_all_tx_rings(struct igb_adapter
*);
90 static void igb_clean_all_rx_rings(struct igb_adapter
*);
91 static void igb_clean_tx_ring(struct igb_ring
*);
92 static void igb_clean_rx_ring(struct igb_ring
*);
93 static void igb_set_multi(struct net_device
*);
94 static void igb_update_phy_info(unsigned long);
95 static void igb_watchdog(unsigned long);
96 static void igb_watchdog_task(struct work_struct
*);
97 static int igb_xmit_frame_ring_adv(struct sk_buff
*, struct net_device
*,
99 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*);
100 static struct net_device_stats
*igb_get_stats(struct net_device
*);
101 static int igb_change_mtu(struct net_device
*, int);
102 static int igb_set_mac(struct net_device
*, void *);
103 static irqreturn_t
igb_intr(int irq
, void *);
104 static irqreturn_t
igb_intr_msi(int irq
, void *);
105 static irqreturn_t
igb_msix_other(int irq
, void *);
106 static irqreturn_t
igb_msix_rx(int irq
, void *);
107 static irqreturn_t
igb_msix_tx(int irq
, void *);
108 static int igb_clean_rx_ring_msix(struct napi_struct
*, int);
109 #ifdef CONFIG_IGB_DCA
110 static void igb_update_rx_dca(struct igb_ring
*);
111 static void igb_update_tx_dca(struct igb_ring
*);
112 static void igb_setup_dca(struct igb_adapter
*);
113 #endif /* CONFIG_IGB_DCA */
114 static bool igb_clean_tx_irq(struct igb_ring
*);
115 static int igb_poll(struct napi_struct
*, int);
116 static bool igb_clean_rx_irq_adv(struct igb_ring
*, int *, int);
117 static void igb_alloc_rx_buffers_adv(struct igb_ring
*, int);
118 static int igb_ioctl(struct net_device
*, struct ifreq
*, int cmd
);
119 static void igb_tx_timeout(struct net_device
*);
120 static void igb_reset_task(struct work_struct
*);
121 static void igb_vlan_rx_register(struct net_device
*, struct vlan_group
*);
122 static void igb_vlan_rx_add_vid(struct net_device
*, u16
);
123 static void igb_vlan_rx_kill_vid(struct net_device
*, u16
);
124 static void igb_restore_vlan(struct igb_adapter
*);
126 static int igb_suspend(struct pci_dev
*, pm_message_t
);
128 static int igb_resume(struct pci_dev
*);
130 static void igb_shutdown(struct pci_dev
*);
131 #ifdef CONFIG_IGB_DCA
132 static int igb_notify_dca(struct notifier_block
*, unsigned long, void *);
133 static struct notifier_block dca_notifier
= {
134 .notifier_call
= igb_notify_dca
,
140 #ifdef CONFIG_NET_POLL_CONTROLLER
141 /* for netdump / net console */
142 static void igb_netpoll(struct net_device
*);
145 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*,
146 pci_channel_state_t
);
147 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*);
148 static void igb_io_resume(struct pci_dev
*);
150 static struct pci_error_handlers igb_err_handler
= {
151 .error_detected
= igb_io_error_detected
,
152 .slot_reset
= igb_io_slot_reset
,
153 .resume
= igb_io_resume
,
157 static struct pci_driver igb_driver
= {
158 .name
= igb_driver_name
,
159 .id_table
= igb_pci_tbl
,
161 .remove
= __devexit_p(igb_remove
),
163 /* Power Managment Hooks */
164 .suspend
= igb_suspend
,
165 .resume
= igb_resume
,
167 .shutdown
= igb_shutdown
,
168 .err_handler
= &igb_err_handler
171 static int global_quad_port_a
; /* global quad port a indication */
173 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
174 MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
175 MODULE_LICENSE("GPL");
176 MODULE_VERSION(DRV_VERSION
);
180 * igb_get_hw_dev_name - return device name string
181 * used by hardware layer to print debugging information
183 char *igb_get_hw_dev_name(struct e1000_hw
*hw
)
185 struct igb_adapter
*adapter
= hw
->back
;
186 return adapter
->netdev
->name
;
191 * igb_init_module - Driver Registration Routine
193 * igb_init_module is the first routine called when the driver is
194 * loaded. All it does is register with the PCI subsystem.
196 static int __init
igb_init_module(void)
199 printk(KERN_INFO
"%s - version %s\n",
200 igb_driver_string
, igb_driver_version
);
202 printk(KERN_INFO
"%s\n", igb_copyright
);
204 global_quad_port_a
= 0;
206 #ifdef CONFIG_IGB_DCA
207 dca_register_notify(&dca_notifier
);
210 ret
= pci_register_driver(&igb_driver
);
214 module_init(igb_init_module
);
217 * igb_exit_module - Driver Exit Cleanup Routine
219 * igb_exit_module is called just before the driver is removed
222 static void __exit
igb_exit_module(void)
224 #ifdef CONFIG_IGB_DCA
225 dca_unregister_notify(&dca_notifier
);
227 pci_unregister_driver(&igb_driver
);
230 module_exit(igb_exit_module
);
232 #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1))
234 * igb_cache_ring_register - Descriptor ring to register mapping
235 * @adapter: board private structure to initialize
237 * Once we know the feature-set enabled for the device, we'll cache
238 * the register offset the descriptor ring is assigned to.
240 static void igb_cache_ring_register(struct igb_adapter
*adapter
)
244 switch (adapter
->hw
.mac
.type
) {
246 /* The queues are allocated for virtualization such that VF 0
247 * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc.
248 * In order to avoid collision we start at the first free queue
249 * and continue consuming queues in the same sequence
251 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
252 adapter
->rx_ring
[i
].reg_idx
= Q_IDX_82576(i
);
253 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
254 adapter
->tx_ring
[i
].reg_idx
= Q_IDX_82576(i
);
258 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
259 adapter
->rx_ring
[i
].reg_idx
= i
;
260 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
261 adapter
->tx_ring
[i
].reg_idx
= i
;
267 * igb_alloc_queues - Allocate memory for all rings
268 * @adapter: board private structure to initialize
270 * We allocate one ring per queue at run-time since we don't know the
271 * number of queues at compile-time.
273 static int igb_alloc_queues(struct igb_adapter
*adapter
)
277 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
278 sizeof(struct igb_ring
), GFP_KERNEL
);
279 if (!adapter
->tx_ring
)
282 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
283 sizeof(struct igb_ring
), GFP_KERNEL
);
284 if (!adapter
->rx_ring
) {
285 kfree(adapter
->tx_ring
);
289 adapter
->rx_ring
->buddy
= adapter
->tx_ring
;
291 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
292 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
293 ring
->count
= adapter
->tx_ring_count
;
294 ring
->adapter
= adapter
;
295 ring
->queue_index
= i
;
297 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
298 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
299 ring
->count
= adapter
->rx_ring_count
;
300 ring
->adapter
= adapter
;
301 ring
->queue_index
= i
;
302 ring
->itr_register
= E1000_ITR
;
304 /* set a default napi handler for each rx_ring */
305 netif_napi_add(adapter
->netdev
, &ring
->napi
, igb_poll
, 64);
308 igb_cache_ring_register(adapter
);
312 static void igb_free_queues(struct igb_adapter
*adapter
)
316 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
317 netif_napi_del(&adapter
->rx_ring
[i
].napi
);
319 kfree(adapter
->tx_ring
);
320 kfree(adapter
->rx_ring
);
323 #define IGB_N0_QUEUE -1
324 static void igb_assign_vector(struct igb_adapter
*adapter
, int rx_queue
,
325 int tx_queue
, int msix_vector
)
328 struct e1000_hw
*hw
= &adapter
->hw
;
331 switch (hw
->mac
.type
) {
333 /* The 82575 assigns vectors using a bitmask, which matches the
334 bitmask for the EICR/EIMS/EIMC registers. To assign one
335 or more queues to a vector, we write the appropriate bits
336 into the MSIXBM register for that vector. */
337 if (rx_queue
> IGB_N0_QUEUE
) {
338 msixbm
= E1000_EICR_RX_QUEUE0
<< rx_queue
;
339 adapter
->rx_ring
[rx_queue
].eims_value
= msixbm
;
341 if (tx_queue
> IGB_N0_QUEUE
) {
342 msixbm
|= E1000_EICR_TX_QUEUE0
<< tx_queue
;
343 adapter
->tx_ring
[tx_queue
].eims_value
=
344 E1000_EICR_TX_QUEUE0
<< tx_queue
;
346 array_wr32(E1000_MSIXBM(0), msix_vector
, msixbm
);
349 /* 82576 uses a table-based method for assigning vectors.
350 Each queue has a single entry in the table to which we write
351 a vector number along with a "valid" bit. Sadly, the layout
352 of the table is somewhat counterintuitive. */
353 if (rx_queue
> IGB_N0_QUEUE
) {
354 index
= (rx_queue
>> 1);
355 ivar
= array_rd32(E1000_IVAR0
, index
);
356 if (rx_queue
& 0x1) {
357 /* vector goes into third byte of register */
358 ivar
= ivar
& 0xFF00FFFF;
359 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 16;
361 /* vector goes into low byte of register */
362 ivar
= ivar
& 0xFFFFFF00;
363 ivar
|= msix_vector
| E1000_IVAR_VALID
;
365 adapter
->rx_ring
[rx_queue
].eims_value
= 1 << msix_vector
;
366 array_wr32(E1000_IVAR0
, index
, ivar
);
368 if (tx_queue
> IGB_N0_QUEUE
) {
369 index
= (tx_queue
>> 1);
370 ivar
= array_rd32(E1000_IVAR0
, index
);
371 if (tx_queue
& 0x1) {
372 /* vector goes into high byte of register */
373 ivar
= ivar
& 0x00FFFFFF;
374 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 24;
376 /* vector goes into second byte of register */
377 ivar
= ivar
& 0xFFFF00FF;
378 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 8;
380 adapter
->tx_ring
[tx_queue
].eims_value
= 1 << msix_vector
;
381 array_wr32(E1000_IVAR0
, index
, ivar
);
391 * igb_configure_msix - Configure MSI-X hardware
393 * igb_configure_msix sets up the hardware to properly
394 * generate MSI-X interrupts.
396 static void igb_configure_msix(struct igb_adapter
*adapter
)
400 struct e1000_hw
*hw
= &adapter
->hw
;
402 adapter
->eims_enable_mask
= 0;
403 if (hw
->mac
.type
== e1000_82576
)
404 /* Turn on MSI-X capability first, or our settings
405 * won't stick. And it will take days to debug. */
406 wr32(E1000_GPIE
, E1000_GPIE_MSIX_MODE
|
407 E1000_GPIE_PBA
| E1000_GPIE_EIAME
|
410 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
411 struct igb_ring
*tx_ring
= &adapter
->tx_ring
[i
];
412 igb_assign_vector(adapter
, IGB_N0_QUEUE
, i
, vector
++);
413 adapter
->eims_enable_mask
|= tx_ring
->eims_value
;
414 if (tx_ring
->itr_val
)
415 writel(tx_ring
->itr_val
,
416 hw
->hw_addr
+ tx_ring
->itr_register
);
418 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
421 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
422 struct igb_ring
*rx_ring
= &adapter
->rx_ring
[i
];
423 rx_ring
->buddy
= NULL
;
424 igb_assign_vector(adapter
, i
, IGB_N0_QUEUE
, vector
++);
425 adapter
->eims_enable_mask
|= rx_ring
->eims_value
;
426 if (rx_ring
->itr_val
)
427 writel(rx_ring
->itr_val
,
428 hw
->hw_addr
+ rx_ring
->itr_register
);
430 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
434 /* set vector for other causes, i.e. link changes */
435 switch (hw
->mac
.type
) {
437 array_wr32(E1000_MSIXBM(0), vector
++,
440 tmp
= rd32(E1000_CTRL_EXT
);
441 /* enable MSI-X PBA support*/
442 tmp
|= E1000_CTRL_EXT_PBA_CLR
;
444 /* Auto-Mask interrupts upon ICR read. */
445 tmp
|= E1000_CTRL_EXT_EIAME
;
446 tmp
|= E1000_CTRL_EXT_IRCA
;
448 wr32(E1000_CTRL_EXT
, tmp
);
449 adapter
->eims_enable_mask
|= E1000_EIMS_OTHER
;
450 adapter
->eims_other
= E1000_EIMS_OTHER
;
455 tmp
= (vector
++ | E1000_IVAR_VALID
) << 8;
456 wr32(E1000_IVAR_MISC
, tmp
);
458 adapter
->eims_enable_mask
= (1 << (vector
)) - 1;
459 adapter
->eims_other
= 1 << (vector
- 1);
462 /* do nothing, since nothing else supports MSI-X */
464 } /* switch (hw->mac.type) */
469 * igb_request_msix - Initialize MSI-X interrupts
471 * igb_request_msix allocates MSI-X vectors and requests interrupts from the
474 static int igb_request_msix(struct igb_adapter
*adapter
)
476 struct net_device
*netdev
= adapter
->netdev
;
477 int i
, err
= 0, vector
= 0;
481 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
482 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
483 sprintf(ring
->name
, "%s-tx-%d", netdev
->name
, i
);
484 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
485 &igb_msix_tx
, 0, ring
->name
,
486 &(adapter
->tx_ring
[i
]));
489 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
490 ring
->itr_val
= 976; /* ~4000 ints/sec */
493 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
494 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
495 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
496 sprintf(ring
->name
, "%s-rx-%d", netdev
->name
, i
);
498 memcpy(ring
->name
, netdev
->name
, IFNAMSIZ
);
499 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
500 &igb_msix_rx
, 0, ring
->name
,
501 &(adapter
->rx_ring
[i
]));
504 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
505 ring
->itr_val
= adapter
->itr
;
506 /* overwrite the poll routine for MSIX, we've already done
508 ring
->napi
.poll
= &igb_clean_rx_ring_msix
;
512 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
513 &igb_msix_other
, 0, netdev
->name
, netdev
);
517 igb_configure_msix(adapter
);
523 static void igb_reset_interrupt_capability(struct igb_adapter
*adapter
)
525 if (adapter
->msix_entries
) {
526 pci_disable_msix(adapter
->pdev
);
527 kfree(adapter
->msix_entries
);
528 adapter
->msix_entries
= NULL
;
529 } else if (adapter
->flags
& IGB_FLAG_HAS_MSI
)
530 pci_disable_msi(adapter
->pdev
);
536 * igb_set_interrupt_capability - set MSI or MSI-X if supported
538 * Attempt to configure interrupts using the best available
539 * capabilities of the hardware and kernel.
541 static void igb_set_interrupt_capability(struct igb_adapter
*adapter
)
546 numvecs
= adapter
->num_tx_queues
+ adapter
->num_rx_queues
+ 1;
547 adapter
->msix_entries
= kcalloc(numvecs
, sizeof(struct msix_entry
),
549 if (!adapter
->msix_entries
)
552 for (i
= 0; i
< numvecs
; i
++)
553 adapter
->msix_entries
[i
].entry
= i
;
555 err
= pci_enable_msix(adapter
->pdev
,
556 adapter
->msix_entries
,
561 igb_reset_interrupt_capability(adapter
);
563 /* If we can't do MSI-X, try MSI */
565 adapter
->num_rx_queues
= 1;
566 adapter
->num_tx_queues
= 1;
567 if (!pci_enable_msi(adapter
->pdev
))
568 adapter
->flags
|= IGB_FLAG_HAS_MSI
;
570 /* Notify the stack of the (possibly) reduced Tx Queue count. */
571 adapter
->netdev
->real_num_tx_queues
= adapter
->num_tx_queues
;
576 * igb_request_irq - initialize interrupts
578 * Attempts to configure interrupts using the best available
579 * capabilities of the hardware and kernel.
581 static int igb_request_irq(struct igb_adapter
*adapter
)
583 struct net_device
*netdev
= adapter
->netdev
;
584 struct e1000_hw
*hw
= &adapter
->hw
;
587 if (adapter
->msix_entries
) {
588 err
= igb_request_msix(adapter
);
591 /* fall back to MSI */
592 igb_reset_interrupt_capability(adapter
);
593 if (!pci_enable_msi(adapter
->pdev
))
594 adapter
->flags
|= IGB_FLAG_HAS_MSI
;
595 igb_free_all_tx_resources(adapter
);
596 igb_free_all_rx_resources(adapter
);
597 adapter
->num_rx_queues
= 1;
598 igb_alloc_queues(adapter
);
600 switch (hw
->mac
.type
) {
602 wr32(E1000_MSIXBM(0),
603 (E1000_EICR_RX_QUEUE0
| E1000_EIMS_OTHER
));
606 wr32(E1000_IVAR0
, E1000_IVAR_VALID
);
613 if (adapter
->flags
& IGB_FLAG_HAS_MSI
) {
614 err
= request_irq(adapter
->pdev
->irq
, &igb_intr_msi
, 0,
615 netdev
->name
, netdev
);
618 /* fall back to legacy interrupts */
619 igb_reset_interrupt_capability(adapter
);
620 adapter
->flags
&= ~IGB_FLAG_HAS_MSI
;
623 err
= request_irq(adapter
->pdev
->irq
, &igb_intr
, IRQF_SHARED
,
624 netdev
->name
, netdev
);
627 dev_err(&adapter
->pdev
->dev
, "Error %d getting interrupt\n",
634 static void igb_free_irq(struct igb_adapter
*adapter
)
636 struct net_device
*netdev
= adapter
->netdev
;
638 if (adapter
->msix_entries
) {
641 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
642 free_irq(adapter
->msix_entries
[vector
++].vector
,
643 &(adapter
->tx_ring
[i
]));
644 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
645 free_irq(adapter
->msix_entries
[vector
++].vector
,
646 &(adapter
->rx_ring
[i
]));
648 free_irq(adapter
->msix_entries
[vector
++].vector
, netdev
);
652 free_irq(adapter
->pdev
->irq
, netdev
);
656 * igb_irq_disable - Mask off interrupt generation on the NIC
657 * @adapter: board private structure
659 static void igb_irq_disable(struct igb_adapter
*adapter
)
661 struct e1000_hw
*hw
= &adapter
->hw
;
663 if (adapter
->msix_entries
) {
665 wr32(E1000_EIMC
, ~0);
672 synchronize_irq(adapter
->pdev
->irq
);
676 * igb_irq_enable - Enable default interrupt generation settings
677 * @adapter: board private structure
679 static void igb_irq_enable(struct igb_adapter
*adapter
)
681 struct e1000_hw
*hw
= &adapter
->hw
;
683 if (adapter
->msix_entries
) {
684 wr32(E1000_EIAC
, adapter
->eims_enable_mask
);
685 wr32(E1000_EIAM
, adapter
->eims_enable_mask
);
686 wr32(E1000_EIMS
, adapter
->eims_enable_mask
);
687 wr32(E1000_IMS
, E1000_IMS_LSC
);
689 wr32(E1000_IMS
, IMS_ENABLE_MASK
);
690 wr32(E1000_IAM
, IMS_ENABLE_MASK
);
694 static void igb_update_mng_vlan(struct igb_adapter
*adapter
)
696 struct net_device
*netdev
= adapter
->netdev
;
697 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
698 u16 old_vid
= adapter
->mng_vlan_id
;
699 if (adapter
->vlgrp
) {
700 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
701 if (adapter
->hw
.mng_cookie
.status
&
702 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
703 igb_vlan_rx_add_vid(netdev
, vid
);
704 adapter
->mng_vlan_id
= vid
;
706 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
708 if ((old_vid
!= (u16
)IGB_MNG_VLAN_NONE
) &&
710 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
711 igb_vlan_rx_kill_vid(netdev
, old_vid
);
713 adapter
->mng_vlan_id
= vid
;
718 * igb_release_hw_control - release control of the h/w to f/w
719 * @adapter: address of board private structure
721 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
722 * For ASF and Pass Through versions of f/w this means that the
723 * driver is no longer loaded.
726 static void igb_release_hw_control(struct igb_adapter
*adapter
)
728 struct e1000_hw
*hw
= &adapter
->hw
;
731 /* Let firmware take over control of h/w */
732 ctrl_ext
= rd32(E1000_CTRL_EXT
);
734 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
739 * igb_get_hw_control - get control of the h/w from f/w
740 * @adapter: address of board private structure
742 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
743 * For ASF and Pass Through versions of f/w this means that
744 * the driver is loaded.
747 static void igb_get_hw_control(struct igb_adapter
*adapter
)
749 struct e1000_hw
*hw
= &adapter
->hw
;
752 /* Let firmware know the driver has taken over */
753 ctrl_ext
= rd32(E1000_CTRL_EXT
);
755 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
759 * igb_configure - configure the hardware for RX and TX
760 * @adapter: private board structure
762 static void igb_configure(struct igb_adapter
*adapter
)
764 struct net_device
*netdev
= adapter
->netdev
;
767 igb_get_hw_control(adapter
);
768 igb_set_multi(netdev
);
770 igb_restore_vlan(adapter
);
772 igb_configure_tx(adapter
);
773 igb_setup_rctl(adapter
);
774 igb_configure_rx(adapter
);
776 igb_rx_fifo_flush_82575(&adapter
->hw
);
778 /* call IGB_DESC_UNUSED which always leaves
779 * at least 1 descriptor unused to make sure
780 * next_to_use != next_to_clean */
781 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
782 struct igb_ring
*ring
= &adapter
->rx_ring
[i
];
783 igb_alloc_rx_buffers_adv(ring
, IGB_DESC_UNUSED(ring
));
787 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
792 * igb_up - Open the interface and prepare it to handle traffic
793 * @adapter: board private structure
796 int igb_up(struct igb_adapter
*adapter
)
798 struct e1000_hw
*hw
= &adapter
->hw
;
801 /* hardware has been reset, we need to reload some things */
802 igb_configure(adapter
);
804 clear_bit(__IGB_DOWN
, &adapter
->state
);
806 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
807 napi_enable(&adapter
->rx_ring
[i
].napi
);
808 if (adapter
->msix_entries
)
809 igb_configure_msix(adapter
);
811 /* Clear any pending interrupts. */
813 igb_irq_enable(adapter
);
815 /* Fire a link change interrupt to start the watchdog. */
816 wr32(E1000_ICS
, E1000_ICS_LSC
);
820 void igb_down(struct igb_adapter
*adapter
)
822 struct e1000_hw
*hw
= &adapter
->hw
;
823 struct net_device
*netdev
= adapter
->netdev
;
827 /* signal that we're down so the interrupt handler does not
828 * reschedule our watchdog timer */
829 set_bit(__IGB_DOWN
, &adapter
->state
);
831 /* disable receives in the hardware */
832 rctl
= rd32(E1000_RCTL
);
833 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
834 /* flush and sleep below */
836 netif_tx_stop_all_queues(netdev
);
838 /* disable transmits in the hardware */
839 tctl
= rd32(E1000_TCTL
);
840 tctl
&= ~E1000_TCTL_EN
;
841 wr32(E1000_TCTL
, tctl
);
842 /* flush both disables and wait for them to finish */
846 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
847 napi_disable(&adapter
->rx_ring
[i
].napi
);
849 igb_irq_disable(adapter
);
851 del_timer_sync(&adapter
->watchdog_timer
);
852 del_timer_sync(&adapter
->phy_info_timer
);
854 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
855 netif_carrier_off(netdev
);
856 adapter
->link_speed
= 0;
857 adapter
->link_duplex
= 0;
859 if (!pci_channel_offline(adapter
->pdev
))
861 igb_clean_all_tx_rings(adapter
);
862 igb_clean_all_rx_rings(adapter
);
865 void igb_reinit_locked(struct igb_adapter
*adapter
)
867 WARN_ON(in_interrupt());
868 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
872 clear_bit(__IGB_RESETTING
, &adapter
->state
);
875 void igb_reset(struct igb_adapter
*adapter
)
877 struct e1000_hw
*hw
= &adapter
->hw
;
878 struct e1000_mac_info
*mac
= &hw
->mac
;
879 struct e1000_fc_info
*fc
= &hw
->fc
;
880 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
883 /* Repartition Pba for greater than 9k mtu
884 * To take effect CTRL.RST is required.
886 if (mac
->type
!= e1000_82576
) {
893 if ((adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
894 (mac
->type
< e1000_82576
)) {
895 /* adjust PBA for jumbo frames */
896 wr32(E1000_PBA
, pba
);
898 /* To maintain wire speed transmits, the Tx FIFO should be
899 * large enough to accommodate two full transmit packets,
900 * rounded up to the next 1KB and expressed in KB. Likewise,
901 * the Rx FIFO should be large enough to accommodate at least
902 * one full receive packet and is similarly rounded up and
903 * expressed in KB. */
904 pba
= rd32(E1000_PBA
);
905 /* upper 16 bits has Tx packet buffer allocation size in KB */
906 tx_space
= pba
>> 16;
907 /* lower 16 bits has Rx packet buffer allocation size in KB */
909 /* the tx fifo also stores 16 bytes of information about the tx
910 * but don't include ethernet FCS because hardware appends it */
911 min_tx_space
= (adapter
->max_frame_size
+
912 sizeof(struct e1000_tx_desc
) -
914 min_tx_space
= ALIGN(min_tx_space
, 1024);
916 /* software strips receive CRC, so leave room for it */
917 min_rx_space
= adapter
->max_frame_size
;
918 min_rx_space
= ALIGN(min_rx_space
, 1024);
921 /* If current Tx allocation is less than the min Tx FIFO size,
922 * and the min Tx FIFO size is less than the current Rx FIFO
923 * allocation, take space away from current Rx allocation */
924 if (tx_space
< min_tx_space
&&
925 ((min_tx_space
- tx_space
) < pba
)) {
926 pba
= pba
- (min_tx_space
- tx_space
);
928 /* if short on rx space, rx wins and must trump tx
930 if (pba
< min_rx_space
)
933 wr32(E1000_PBA
, pba
);
936 /* flow control settings */
937 /* The high water mark must be low enough to fit one full frame
938 * (or the size used for early receive) above it in the Rx FIFO.
939 * Set it to the lower of:
940 * - 90% of the Rx FIFO size, or
941 * - the full Rx FIFO size minus one full frame */
942 hwm
= min(((pba
<< 10) * 9 / 10),
943 ((pba
<< 10) - 2 * adapter
->max_frame_size
));
945 if (mac
->type
< e1000_82576
) {
946 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
947 fc
->low_water
= fc
->high_water
- 8;
949 fc
->high_water
= hwm
& 0xFFF0; /* 16-byte granularity */
950 fc
->low_water
= fc
->high_water
- 16;
952 fc
->pause_time
= 0xFFFF;
954 fc
->type
= fc
->original_type
;
956 /* Allow time for pending master requests to run */
957 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
960 if (adapter
->hw
.mac
.ops
.init_hw(&adapter
->hw
))
961 dev_err(&adapter
->pdev
->dev
, "Hardware Error\n");
963 igb_update_mng_vlan(adapter
);
965 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
966 wr32(E1000_VET
, ETHERNET_IEEE_VLAN_TYPE
);
968 igb_reset_adaptive(&adapter
->hw
);
969 igb_get_phy_info(&adapter
->hw
);
973 * igb_is_need_ioport - determine if an adapter needs ioport resources or not
974 * @pdev: PCI device information struct
976 * Returns true if an adapter needs ioport resources
978 static int igb_is_need_ioport(struct pci_dev
*pdev
)
980 switch (pdev
->device
) {
981 /* Currently there are no adapters that need ioport resources */
987 static const struct net_device_ops igb_netdev_ops
= {
988 .ndo_open
= igb_open
,
989 .ndo_stop
= igb_close
,
990 .ndo_start_xmit
= igb_xmit_frame_adv
,
991 .ndo_get_stats
= igb_get_stats
,
992 .ndo_set_multicast_list
= igb_set_multi
,
993 .ndo_set_mac_address
= igb_set_mac
,
994 .ndo_change_mtu
= igb_change_mtu
,
995 .ndo_do_ioctl
= igb_ioctl
,
996 .ndo_tx_timeout
= igb_tx_timeout
,
997 .ndo_validate_addr
= eth_validate_addr
,
998 .ndo_vlan_rx_register
= igb_vlan_rx_register
,
999 .ndo_vlan_rx_add_vid
= igb_vlan_rx_add_vid
,
1000 .ndo_vlan_rx_kill_vid
= igb_vlan_rx_kill_vid
,
1001 #ifdef CONFIG_NET_POLL_CONTROLLER
1002 .ndo_poll_controller
= igb_netpoll
,
1007 * igb_probe - Device Initialization Routine
1008 * @pdev: PCI device information struct
1009 * @ent: entry in igb_pci_tbl
1011 * Returns 0 on success, negative on failure
1013 * igb_probe initializes an adapter identified by a pci_dev structure.
1014 * The OS initialization, configuring of the adapter private structure,
1015 * and a hardware reset occur.
1017 static int __devinit
igb_probe(struct pci_dev
*pdev
,
1018 const struct pci_device_id
*ent
)
1020 struct net_device
*netdev
;
1021 struct igb_adapter
*adapter
;
1022 struct e1000_hw
*hw
;
1023 struct pci_dev
*us_dev
;
1024 const struct e1000_info
*ei
= igb_info_tbl
[ent
->driver_data
];
1025 unsigned long mmio_start
, mmio_len
;
1026 int i
, err
, pci_using_dac
, pos
;
1027 u16 eeprom_data
= 0, state
= 0;
1028 u16 eeprom_apme_mask
= IGB_EEPROM_APME
;
1030 int bars
, need_ioport
;
1032 /* do not allocate ioport bars when not needed */
1033 need_ioport
= igb_is_need_ioport(pdev
);
1035 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
1036 err
= pci_enable_device(pdev
);
1038 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
1039 err
= pci_enable_device_mem(pdev
);
1045 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
1047 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
1051 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
1053 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1055 dev_err(&pdev
->dev
, "No usable DMA "
1056 "configuration, aborting\n");
1062 /* 82575 requires that the pci-e link partner disable the L0s state */
1063 switch (pdev
->device
) {
1064 case E1000_DEV_ID_82575EB_COPPER
:
1065 case E1000_DEV_ID_82575EB_FIBER_SERDES
:
1066 case E1000_DEV_ID_82575GB_QUAD_COPPER
:
1067 us_dev
= pdev
->bus
->self
;
1068 pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
1070 pci_read_config_word(us_dev
, pos
+ PCI_EXP_LNKCTL
,
1072 state
&= ~PCIE_LINK_STATE_L0S
;
1073 pci_write_config_word(us_dev
, pos
+ PCI_EXP_LNKCTL
,
1075 dev_info(&pdev
->dev
,
1076 "Disabling ASPM L0s upstream switch port %s\n",
1083 err
= pci_request_selected_regions(pdev
, bars
, igb_driver_name
);
1087 err
= pci_enable_pcie_error_reporting(pdev
);
1089 dev_err(&pdev
->dev
, "pci_enable_pcie_error_reporting failed "
1091 /* non-fatal, continue */
1094 pci_set_master(pdev
);
1095 pci_save_state(pdev
);
1098 netdev
= alloc_etherdev_mq(sizeof(struct igb_adapter
), IGB_MAX_TX_QUEUES
);
1100 goto err_alloc_etherdev
;
1102 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
1104 pci_set_drvdata(pdev
, netdev
);
1105 adapter
= netdev_priv(netdev
);
1106 adapter
->netdev
= netdev
;
1107 adapter
->pdev
= pdev
;
1110 adapter
->msg_enable
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
1111 adapter
->bars
= bars
;
1112 adapter
->need_ioport
= need_ioport
;
1114 mmio_start
= pci_resource_start(pdev
, 0);
1115 mmio_len
= pci_resource_len(pdev
, 0);
1118 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
1119 if (!adapter
->hw
.hw_addr
)
1122 netdev
->netdev_ops
= &igb_netdev_ops
;
1123 igb_set_ethtool_ops(netdev
);
1124 netdev
->watchdog_timeo
= 5 * HZ
;
1126 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
1128 netdev
->mem_start
= mmio_start
;
1129 netdev
->mem_end
= mmio_start
+ mmio_len
;
1131 /* PCI config space info */
1132 hw
->vendor_id
= pdev
->vendor
;
1133 hw
->device_id
= pdev
->device
;
1134 hw
->revision_id
= pdev
->revision
;
1135 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1136 hw
->subsystem_device_id
= pdev
->subsystem_device
;
1138 /* setup the private structure */
1140 /* Copy the default MAC, PHY and NVM function pointers */
1141 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
1142 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
1143 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
1144 /* Initialize skew-specific constants */
1145 err
= ei
->get_invariants(hw
);
1149 err
= igb_sw_init(adapter
);
1153 igb_get_bus_info_pcie(hw
);
1156 switch (hw
->mac
.type
) {
1158 adapter
->flags
|= IGB_FLAG_NEED_CTX_IDX
;
1165 hw
->phy
.autoneg_wait_to_complete
= false;
1166 hw
->mac
.adaptive_ifs
= true;
1168 /* Copper options */
1169 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
1170 hw
->phy
.mdix
= AUTO_ALL_MODES
;
1171 hw
->phy
.disable_polarity_correction
= false;
1172 hw
->phy
.ms_type
= e1000_ms_hw_default
;
1175 if (igb_check_reset_block(hw
))
1176 dev_info(&pdev
->dev
,
1177 "PHY reset is blocked due to SOL/IDER session.\n");
1179 netdev
->features
= NETIF_F_SG
|
1181 NETIF_F_HW_VLAN_TX
|
1182 NETIF_F_HW_VLAN_RX
|
1183 NETIF_F_HW_VLAN_FILTER
;
1185 netdev
->features
|= NETIF_F_TSO
;
1186 netdev
->features
|= NETIF_F_TSO6
;
1188 #ifdef CONFIG_IGB_LRO
1189 netdev
->features
|= NETIF_F_GRO
;
1192 netdev
->vlan_features
|= NETIF_F_TSO
;
1193 netdev
->vlan_features
|= NETIF_F_TSO6
;
1194 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
1195 netdev
->vlan_features
|= NETIF_F_SG
;
1198 netdev
->features
|= NETIF_F_HIGHDMA
;
1200 adapter
->en_mng_pt
= igb_enable_mng_pass_thru(&adapter
->hw
);
1202 /* before reading the NVM, reset the controller to put the device in a
1203 * known good starting state */
1204 hw
->mac
.ops
.reset_hw(hw
);
1206 /* make sure the NVM is good */
1207 if (igb_validate_nvm_checksum(hw
) < 0) {
1208 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
1213 /* copy the MAC address out of the NVM */
1214 if (hw
->mac
.ops
.read_mac_addr(hw
))
1215 dev_err(&pdev
->dev
, "NVM Read Error\n");
1217 memcpy(netdev
->dev_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1218 memcpy(netdev
->perm_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1220 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1221 dev_err(&pdev
->dev
, "Invalid MAC Address\n");
1226 init_timer(&adapter
->watchdog_timer
);
1227 adapter
->watchdog_timer
.function
= &igb_watchdog
;
1228 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1230 init_timer(&adapter
->phy_info_timer
);
1231 adapter
->phy_info_timer
.function
= &igb_update_phy_info
;
1232 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
1234 INIT_WORK(&adapter
->reset_task
, igb_reset_task
);
1235 INIT_WORK(&adapter
->watchdog_task
, igb_watchdog_task
);
1237 /* Initialize link & ring properties that are user-changeable */
1238 adapter
->tx_ring
->count
= 256;
1239 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1240 adapter
->tx_ring
[i
].count
= adapter
->tx_ring
->count
;
1241 adapter
->rx_ring
->count
= 256;
1242 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1243 adapter
->rx_ring
[i
].count
= adapter
->rx_ring
->count
;
1245 adapter
->fc_autoneg
= true;
1246 hw
->mac
.autoneg
= true;
1247 hw
->phy
.autoneg_advertised
= 0x2f;
1249 hw
->fc
.original_type
= e1000_fc_default
;
1250 hw
->fc
.type
= e1000_fc_default
;
1252 adapter
->itr_setting
= 3;
1253 adapter
->itr
= IGB_START_ITR
;
1255 igb_validate_mdi_setting(hw
);
1257 adapter
->rx_csum
= 1;
1259 /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
1260 * enable the ACPI Magic Packet filter
1263 if (hw
->bus
.func
== 0 ||
1264 hw
->device_id
== E1000_DEV_ID_82575EB_COPPER
)
1265 hw
->nvm
.ops
.read_nvm(hw
, NVM_INIT_CONTROL3_PORT_A
, 1,
1268 if (eeprom_data
& eeprom_apme_mask
)
1269 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1271 /* now that we have the eeprom settings, apply the special cases where
1272 * the eeprom may be wrong or the board simply won't support wake on
1273 * lan on a particular port */
1274 switch (pdev
->device
) {
1275 case E1000_DEV_ID_82575GB_QUAD_COPPER
:
1276 adapter
->eeprom_wol
= 0;
1278 case E1000_DEV_ID_82575EB_FIBER_SERDES
:
1279 case E1000_DEV_ID_82576_FIBER
:
1280 case E1000_DEV_ID_82576_SERDES
:
1281 /* Wake events only supported on port A for dual fiber
1282 * regardless of eeprom setting */
1283 if (rd32(E1000_STATUS
) & E1000_STATUS_FUNC_1
)
1284 adapter
->eeprom_wol
= 0;
1288 /* initialize the wol settings based on the eeprom settings */
1289 adapter
->wol
= adapter
->eeprom_wol
;
1290 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
1292 /* reset the hardware with the new settings */
1295 /* let the f/w know that the h/w is now under the control of the
1297 igb_get_hw_control(adapter
);
1299 /* tell the stack to leave us alone until igb_open() is called */
1300 netif_carrier_off(netdev
);
1301 netif_tx_stop_all_queues(netdev
);
1303 strcpy(netdev
->name
, "eth%d");
1304 err
= register_netdev(netdev
);
1308 #ifdef CONFIG_IGB_DCA
1309 if (dca_add_requester(&pdev
->dev
) == 0) {
1310 adapter
->flags
|= IGB_FLAG_DCA_ENABLED
;
1311 dev_info(&pdev
->dev
, "DCA enabled\n");
1312 /* Always use CB2 mode, difference is masked
1313 * in the CB driver. */
1314 wr32(E1000_DCA_CTRL
, 2);
1315 igb_setup_dca(adapter
);
1319 dev_info(&pdev
->dev
, "Intel(R) Gigabit Ethernet Network Connection\n");
1320 /* print bus type/speed/width info */
1321 dev_info(&pdev
->dev
, "%s: (PCIe:%s:%s) %pM\n",
1323 ((hw
->bus
.speed
== e1000_bus_speed_2500
)
1324 ? "2.5Gb/s" : "unknown"),
1325 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
)
1326 ? "Width x4" : (hw
->bus
.width
== e1000_bus_width_pcie_x1
)
1327 ? "Width x1" : "unknown"),
1330 igb_read_part_num(hw
, &part_num
);
1331 dev_info(&pdev
->dev
, "%s: PBA No: %06x-%03x\n", netdev
->name
,
1332 (part_num
>> 8), (part_num
& 0xff));
1334 dev_info(&pdev
->dev
,
1335 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
1336 adapter
->msix_entries
? "MSI-X" :
1337 (adapter
->flags
& IGB_FLAG_HAS_MSI
) ? "MSI" : "legacy",
1338 adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1343 igb_release_hw_control(adapter
);
1345 if (!igb_check_reset_block(hw
))
1348 if (hw
->flash_address
)
1349 iounmap(hw
->flash_address
);
1351 igb_remove_device(hw
);
1352 igb_free_queues(adapter
);
1355 iounmap(hw
->hw_addr
);
1357 free_netdev(netdev
);
1359 pci_release_selected_regions(pdev
, bars
);
1362 pci_disable_device(pdev
);
1367 * igb_remove - Device Removal Routine
1368 * @pdev: PCI device information struct
1370 * igb_remove is called by the PCI subsystem to alert the driver
1371 * that it should release a PCI device. The could be caused by a
1372 * Hot-Plug event, or because the driver is going to be removed from
1375 static void __devexit
igb_remove(struct pci_dev
*pdev
)
1377 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1378 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1379 #ifdef CONFIG_IGB_DCA
1380 struct e1000_hw
*hw
= &adapter
->hw
;
1384 /* flush_scheduled work may reschedule our watchdog task, so
1385 * explicitly disable watchdog tasks from being rescheduled */
1386 set_bit(__IGB_DOWN
, &adapter
->state
);
1387 del_timer_sync(&adapter
->watchdog_timer
);
1388 del_timer_sync(&adapter
->phy_info_timer
);
1390 flush_scheduled_work();
1392 #ifdef CONFIG_IGB_DCA
1393 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
) {
1394 dev_info(&pdev
->dev
, "DCA disabled\n");
1395 dca_remove_requester(&pdev
->dev
);
1396 adapter
->flags
&= ~IGB_FLAG_DCA_ENABLED
;
1397 wr32(E1000_DCA_CTRL
, 1);
1401 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1402 * would have already happened in close and is redundant. */
1403 igb_release_hw_control(adapter
);
1405 unregister_netdev(netdev
);
1407 if (!igb_check_reset_block(&adapter
->hw
))
1408 igb_reset_phy(&adapter
->hw
);
1410 igb_remove_device(&adapter
->hw
);
1411 igb_reset_interrupt_capability(adapter
);
1413 igb_free_queues(adapter
);
1415 iounmap(adapter
->hw
.hw_addr
);
1416 if (adapter
->hw
.flash_address
)
1417 iounmap(adapter
->hw
.flash_address
);
1418 pci_release_selected_regions(pdev
, adapter
->bars
);
1420 free_netdev(netdev
);
1422 err
= pci_disable_pcie_error_reporting(pdev
);
1425 "pci_disable_pcie_error_reporting failed 0x%x\n", err
);
1427 pci_disable_device(pdev
);
1431 * igb_sw_init - Initialize general software structures (struct igb_adapter)
1432 * @adapter: board private structure to initialize
1434 * igb_sw_init initializes the Adapter private data structure.
1435 * Fields are initialized based on PCI device information and
1436 * OS network device settings (MTU size).
1438 static int __devinit
igb_sw_init(struct igb_adapter
*adapter
)
1440 struct e1000_hw
*hw
= &adapter
->hw
;
1441 struct net_device
*netdev
= adapter
->netdev
;
1442 struct pci_dev
*pdev
= adapter
->pdev
;
1444 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->bus
.pci_cmd_word
);
1446 adapter
->tx_ring_count
= IGB_DEFAULT_TXD
;
1447 adapter
->rx_ring_count
= IGB_DEFAULT_RXD
;
1448 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1449 adapter
->rx_ps_hdr_size
= 0; /* disable packet split */
1450 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1451 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
1453 /* Number of supported queues. */
1454 /* Having more queues than CPUs doesn't make sense. */
1455 adapter
->num_rx_queues
= min_t(u32
, IGB_MAX_RX_QUEUES
, num_online_cpus());
1456 adapter
->num_tx_queues
= min_t(u32
, IGB_MAX_TX_QUEUES
, num_online_cpus());
1458 /* This call may decrease the number of queues depending on
1459 * interrupt mode. */
1460 igb_set_interrupt_capability(adapter
);
1462 if (igb_alloc_queues(adapter
)) {
1463 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
1467 /* Explicitly disable IRQ since the NIC can be in any state. */
1468 igb_irq_disable(adapter
);
1470 set_bit(__IGB_DOWN
, &adapter
->state
);
1475 * igb_open - Called when a network interface is made active
1476 * @netdev: network interface device structure
1478 * Returns 0 on success, negative value on failure
1480 * The open entry point is called when a network interface is made
1481 * active by the system (IFF_UP). At this point all resources needed
1482 * for transmit and receive operations are allocated, the interrupt
1483 * handler is registered with the OS, the watchdog timer is started,
1484 * and the stack is notified that the interface is ready.
1486 static int igb_open(struct net_device
*netdev
)
1488 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1489 struct e1000_hw
*hw
= &adapter
->hw
;
1493 /* disallow open during test */
1494 if (test_bit(__IGB_TESTING
, &adapter
->state
))
1497 /* allocate transmit descriptors */
1498 err
= igb_setup_all_tx_resources(adapter
);
1502 /* allocate receive descriptors */
1503 err
= igb_setup_all_rx_resources(adapter
);
1507 /* e1000_power_up_phy(adapter); */
1509 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
1510 if ((adapter
->hw
.mng_cookie
.status
&
1511 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
1512 igb_update_mng_vlan(adapter
);
1514 /* before we allocate an interrupt, we must be ready to handle it.
1515 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1516 * as soon as we call pci_request_irq, so we have to setup our
1517 * clean_rx handler before we do so. */
1518 igb_configure(adapter
);
1520 err
= igb_request_irq(adapter
);
1524 /* From here on the code is the same as igb_up() */
1525 clear_bit(__IGB_DOWN
, &adapter
->state
);
1527 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1528 napi_enable(&adapter
->rx_ring
[i
].napi
);
1530 /* Clear any pending interrupts. */
1533 igb_irq_enable(adapter
);
1535 netif_tx_start_all_queues(netdev
);
1537 /* Fire a link status change interrupt to start the watchdog. */
1538 wr32(E1000_ICS
, E1000_ICS_LSC
);
1543 igb_release_hw_control(adapter
);
1544 /* e1000_power_down_phy(adapter); */
1545 igb_free_all_rx_resources(adapter
);
1547 igb_free_all_tx_resources(adapter
);
1555 * igb_close - Disables a network interface
1556 * @netdev: network interface device structure
1558 * Returns 0, this is not allowed to fail
1560 * The close entry point is called when an interface is de-activated
1561 * by the OS. The hardware is still under the driver's control, but
1562 * needs to be disabled. A global MAC reset is issued to stop the
1563 * hardware, and all transmit and receive resources are freed.
1565 static int igb_close(struct net_device
*netdev
)
1567 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1569 WARN_ON(test_bit(__IGB_RESETTING
, &adapter
->state
));
1572 igb_free_irq(adapter
);
1574 igb_free_all_tx_resources(adapter
);
1575 igb_free_all_rx_resources(adapter
);
1577 /* kill manageability vlan ID if supported, but not if a vlan with
1578 * the same ID is registered on the host OS (let 8021q kill it) */
1579 if ((adapter
->hw
.mng_cookie
.status
&
1580 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1582 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
1583 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1589 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
1590 * @adapter: board private structure
1591 * @tx_ring: tx descriptor ring (for a specific queue) to setup
1593 * Return 0 on success, negative on failure
1596 int igb_setup_tx_resources(struct igb_adapter
*adapter
,
1597 struct igb_ring
*tx_ring
)
1599 struct pci_dev
*pdev
= adapter
->pdev
;
1602 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
1603 tx_ring
->buffer_info
= vmalloc(size
);
1604 if (!tx_ring
->buffer_info
)
1606 memset(tx_ring
->buffer_info
, 0, size
);
1608 /* round up to nearest 4K */
1609 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
1610 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1612 tx_ring
->desc
= pci_alloc_consistent(pdev
, tx_ring
->size
,
1618 tx_ring
->adapter
= adapter
;
1619 tx_ring
->next_to_use
= 0;
1620 tx_ring
->next_to_clean
= 0;
1624 vfree(tx_ring
->buffer_info
);
1625 dev_err(&adapter
->pdev
->dev
,
1626 "Unable to allocate memory for the transmit descriptor ring\n");
1631 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
1632 * (Descriptors) for all queues
1633 * @adapter: board private structure
1635 * Return 0 on success, negative on failure
1637 static int igb_setup_all_tx_resources(struct igb_adapter
*adapter
)
1642 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1643 err
= igb_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1645 dev_err(&adapter
->pdev
->dev
,
1646 "Allocation for Tx Queue %u failed\n", i
);
1647 for (i
--; i
>= 0; i
--)
1648 igb_free_tx_resources(&adapter
->tx_ring
[i
]);
1653 for (i
= 0; i
< IGB_MAX_TX_QUEUES
; i
++) {
1654 r_idx
= i
% adapter
->num_tx_queues
;
1655 adapter
->multi_tx_table
[i
] = &adapter
->tx_ring
[r_idx
];
1661 * igb_configure_tx - Configure transmit Unit after Reset
1662 * @adapter: board private structure
1664 * Configure the Tx unit of the MAC after a reset.
1666 static void igb_configure_tx(struct igb_adapter
*adapter
)
1669 struct e1000_hw
*hw
= &adapter
->hw
;
1674 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1675 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
1677 wr32(E1000_TDLEN(j
),
1678 ring
->count
* sizeof(struct e1000_tx_desc
));
1680 wr32(E1000_TDBAL(j
),
1681 tdba
& 0x00000000ffffffffULL
);
1682 wr32(E1000_TDBAH(j
), tdba
>> 32);
1684 ring
->head
= E1000_TDH(j
);
1685 ring
->tail
= E1000_TDT(j
);
1686 writel(0, hw
->hw_addr
+ ring
->tail
);
1687 writel(0, hw
->hw_addr
+ ring
->head
);
1688 txdctl
= rd32(E1000_TXDCTL(j
));
1689 txdctl
|= E1000_TXDCTL_QUEUE_ENABLE
;
1690 wr32(E1000_TXDCTL(j
), txdctl
);
1692 /* Turn off Relaxed Ordering on head write-backs. The
1693 * writebacks MUST be delivered in order or it will
1694 * completely screw up our bookeeping.
1696 txctrl
= rd32(E1000_DCA_TXCTRL(j
));
1697 txctrl
&= ~E1000_DCA_TXCTRL_TX_WB_RO_EN
;
1698 wr32(E1000_DCA_TXCTRL(j
), txctrl
);
1703 /* Use the default values for the Tx Inter Packet Gap (IPG) timer */
1705 /* Program the Transmit Control Register */
1707 tctl
= rd32(E1000_TCTL
);
1708 tctl
&= ~E1000_TCTL_CT
;
1709 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1710 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1712 igb_config_collision_dist(hw
);
1714 /* Setup Transmit Descriptor Settings for eop descriptor */
1715 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_RS
;
1717 /* Enable transmits */
1718 tctl
|= E1000_TCTL_EN
;
1720 wr32(E1000_TCTL
, tctl
);
1724 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
1725 * @adapter: board private structure
1726 * @rx_ring: rx descriptor ring (for a specific queue) to setup
1728 * Returns 0 on success, negative on failure
1731 int igb_setup_rx_resources(struct igb_adapter
*adapter
,
1732 struct igb_ring
*rx_ring
)
1734 struct pci_dev
*pdev
= adapter
->pdev
;
1737 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
1738 rx_ring
->buffer_info
= vmalloc(size
);
1739 if (!rx_ring
->buffer_info
)
1741 memset(rx_ring
->buffer_info
, 0, size
);
1743 desc_len
= sizeof(union e1000_adv_rx_desc
);
1745 /* Round up to nearest 4K */
1746 rx_ring
->size
= rx_ring
->count
* desc_len
;
1747 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1749 rx_ring
->desc
= pci_alloc_consistent(pdev
, rx_ring
->size
,
1755 rx_ring
->next_to_clean
= 0;
1756 rx_ring
->next_to_use
= 0;
1758 rx_ring
->adapter
= adapter
;
1763 vfree(rx_ring
->buffer_info
);
1764 dev_err(&adapter
->pdev
->dev
, "Unable to allocate memory for "
1765 "the receive descriptor ring\n");
1770 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
1771 * (Descriptors) for all queues
1772 * @adapter: board private structure
1774 * Return 0 on success, negative on failure
1776 static int igb_setup_all_rx_resources(struct igb_adapter
*adapter
)
1780 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1781 err
= igb_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1783 dev_err(&adapter
->pdev
->dev
,
1784 "Allocation for Rx Queue %u failed\n", i
);
1785 for (i
--; i
>= 0; i
--)
1786 igb_free_rx_resources(&adapter
->rx_ring
[i
]);
1795 * igb_setup_rctl - configure the receive control registers
1796 * @adapter: Board private structure
1798 static void igb_setup_rctl(struct igb_adapter
*adapter
)
1800 struct e1000_hw
*hw
= &adapter
->hw
;
1805 rctl
= rd32(E1000_RCTL
);
1807 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1808 rctl
&= ~(E1000_RCTL_LBM_TCVR
| E1000_RCTL_LBM_MAC
);
1810 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
| E1000_RCTL_RDMTS_HALF
|
1811 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1814 * enable stripping of CRC. It's unlikely this will break BMC
1815 * redirection as it did with e1000. Newer features require
1816 * that the HW strips the CRC.
1818 rctl
|= E1000_RCTL_SECRC
;
1821 * disable store bad packets and clear size bits.
1823 rctl
&= ~(E1000_RCTL_SBP
| E1000_RCTL_SZ_256
);
1825 /* enable LPE when to prevent packets larger than max_frame_size */
1826 rctl
|= E1000_RCTL_LPE
;
1828 /* Setup buffer sizes */
1829 switch (adapter
->rx_buffer_len
) {
1830 case IGB_RXBUFFER_256
:
1831 rctl
|= E1000_RCTL_SZ_256
;
1833 case IGB_RXBUFFER_512
:
1834 rctl
|= E1000_RCTL_SZ_512
;
1837 srrctl
= ALIGN(adapter
->rx_buffer_len
, 1024)
1838 >> E1000_SRRCTL_BSIZEPKT_SHIFT
;
1842 /* 82575 and greater support packet-split where the protocol
1843 * header is placed in skb->data and the packet data is
1844 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1845 * In the case of a non-split, skb->data is linearly filled,
1846 * followed by the page buffers. Therefore, skb->data is
1847 * sized to hold the largest protocol header.
1849 /* allocations using alloc_page take too long for regular MTU
1850 * so only enable packet split for jumbo frames */
1851 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
1852 adapter
->rx_ps_hdr_size
= IGB_RXBUFFER_128
;
1853 srrctl
|= adapter
->rx_ps_hdr_size
<<
1854 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT
;
1855 srrctl
|= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
1857 adapter
->rx_ps_hdr_size
= 0;
1858 srrctl
|= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1861 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1862 j
= adapter
->rx_ring
[i
].reg_idx
;
1863 wr32(E1000_SRRCTL(j
), srrctl
);
1866 wr32(E1000_RCTL
, rctl
);
1870 * igb_configure_rx - Configure receive Unit after Reset
1871 * @adapter: board private structure
1873 * Configure the Rx unit of the MAC after a reset.
1875 static void igb_configure_rx(struct igb_adapter
*adapter
)
1878 struct e1000_hw
*hw
= &adapter
->hw
;
1883 /* disable receives while setting up the descriptors */
1884 rctl
= rd32(E1000_RCTL
);
1885 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
1889 if (adapter
->itr_setting
> 3)
1890 wr32(E1000_ITR
, adapter
->itr
);
1892 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1893 * the Base and Length of the Rx Descriptor Ring */
1894 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1895 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
1898 wr32(E1000_RDBAL(j
),
1899 rdba
& 0x00000000ffffffffULL
);
1900 wr32(E1000_RDBAH(j
), rdba
>> 32);
1901 wr32(E1000_RDLEN(j
),
1902 ring
->count
* sizeof(union e1000_adv_rx_desc
));
1904 ring
->head
= E1000_RDH(j
);
1905 ring
->tail
= E1000_RDT(j
);
1906 writel(0, hw
->hw_addr
+ ring
->tail
);
1907 writel(0, hw
->hw_addr
+ ring
->head
);
1909 rxdctl
= rd32(E1000_RXDCTL(j
));
1910 rxdctl
|= E1000_RXDCTL_QUEUE_ENABLE
;
1911 rxdctl
&= 0xFFF00000;
1912 rxdctl
|= IGB_RX_PTHRESH
;
1913 rxdctl
|= IGB_RX_HTHRESH
<< 8;
1914 rxdctl
|= IGB_RX_WTHRESH
<< 16;
1915 wr32(E1000_RXDCTL(j
), rxdctl
);
1918 if (adapter
->num_rx_queues
> 1) {
1927 get_random_bytes(&random
[0], 40);
1929 if (hw
->mac
.type
>= e1000_82576
)
1933 for (j
= 0; j
< (32 * 4); j
++) {
1935 adapter
->rx_ring
[(j
% adapter
->num_rx_queues
)].reg_idx
<< shift
;
1938 hw
->hw_addr
+ E1000_RETA(0) + (j
& ~3));
1940 mrqc
= E1000_MRQC_ENABLE_RSS_4Q
;
1942 /* Fill out hash function seeds */
1943 for (j
= 0; j
< 10; j
++)
1944 array_wr32(E1000_RSSRK(0), j
, random
[j
]);
1946 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1947 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1948 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6
|
1949 E1000_MRQC_RSS_FIELD_IPV6_TCP
);
1950 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4_UDP
|
1951 E1000_MRQC_RSS_FIELD_IPV6_UDP
);
1952 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX
|
1953 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
1956 wr32(E1000_MRQC
, mrqc
);
1958 /* Multiqueue and raw packet checksumming are mutually
1959 * exclusive. Note that this not the same as TCP/IP
1960 * checksumming, which works fine. */
1961 rxcsum
= rd32(E1000_RXCSUM
);
1962 rxcsum
|= E1000_RXCSUM_PCSD
;
1963 wr32(E1000_RXCSUM
, rxcsum
);
1965 /* Enable Receive Checksum Offload for TCP and UDP */
1966 rxcsum
= rd32(E1000_RXCSUM
);
1967 if (adapter
->rx_csum
) {
1968 rxcsum
|= E1000_RXCSUM_TUOFL
;
1970 /* Enable IPv4 payload checksum for UDP fragments
1971 * Must be used in conjunction with packet-split. */
1972 if (adapter
->rx_ps_hdr_size
)
1973 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1975 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1976 /* don't need to clear IPPCSE as it defaults to 0 */
1978 wr32(E1000_RXCSUM
, rxcsum
);
1983 adapter
->max_frame_size
+ VLAN_TAG_SIZE
);
1985 wr32(E1000_RLPML
, adapter
->max_frame_size
);
1987 /* Enable Receives */
1988 wr32(E1000_RCTL
, rctl
);
1992 * igb_free_tx_resources - Free Tx Resources per Queue
1993 * @tx_ring: Tx descriptor ring for a specific queue
1995 * Free all transmit software resources
1997 void igb_free_tx_resources(struct igb_ring
*tx_ring
)
1999 struct pci_dev
*pdev
= tx_ring
->adapter
->pdev
;
2001 igb_clean_tx_ring(tx_ring
);
2003 vfree(tx_ring
->buffer_info
);
2004 tx_ring
->buffer_info
= NULL
;
2006 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2008 tx_ring
->desc
= NULL
;
2012 * igb_free_all_tx_resources - Free Tx Resources for All Queues
2013 * @adapter: board private structure
2015 * Free all transmit software resources
2017 static void igb_free_all_tx_resources(struct igb_adapter
*adapter
)
2021 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2022 igb_free_tx_resources(&adapter
->tx_ring
[i
]);
2025 static void igb_unmap_and_free_tx_resource(struct igb_adapter
*adapter
,
2026 struct igb_buffer
*buffer_info
)
2028 if (buffer_info
->dma
) {
2029 pci_unmap_page(adapter
->pdev
,
2031 buffer_info
->length
,
2033 buffer_info
->dma
= 0;
2035 if (buffer_info
->skb
) {
2036 dev_kfree_skb_any(buffer_info
->skb
);
2037 buffer_info
->skb
= NULL
;
2039 buffer_info
->time_stamp
= 0;
2040 /* buffer_info must be completely set up in the transmit path */
2044 * igb_clean_tx_ring - Free Tx Buffers
2045 * @tx_ring: ring to be cleaned
2047 static void igb_clean_tx_ring(struct igb_ring
*tx_ring
)
2049 struct igb_adapter
*adapter
= tx_ring
->adapter
;
2050 struct igb_buffer
*buffer_info
;
2054 if (!tx_ring
->buffer_info
)
2056 /* Free all the Tx ring sk_buffs */
2058 for (i
= 0; i
< tx_ring
->count
; i
++) {
2059 buffer_info
= &tx_ring
->buffer_info
[i
];
2060 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
2063 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
2064 memset(tx_ring
->buffer_info
, 0, size
);
2066 /* Zero out the descriptor ring */
2068 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2070 tx_ring
->next_to_use
= 0;
2071 tx_ring
->next_to_clean
= 0;
2073 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2074 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2078 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
2079 * @adapter: board private structure
2081 static void igb_clean_all_tx_rings(struct igb_adapter
*adapter
)
2085 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2086 igb_clean_tx_ring(&adapter
->tx_ring
[i
]);
2090 * igb_free_rx_resources - Free Rx Resources
2091 * @rx_ring: ring to clean the resources from
2093 * Free all receive software resources
2095 void igb_free_rx_resources(struct igb_ring
*rx_ring
)
2097 struct pci_dev
*pdev
= rx_ring
->adapter
->pdev
;
2099 igb_clean_rx_ring(rx_ring
);
2101 vfree(rx_ring
->buffer_info
);
2102 rx_ring
->buffer_info
= NULL
;
2104 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2106 rx_ring
->desc
= NULL
;
2110 * igb_free_all_rx_resources - Free Rx Resources for All Queues
2111 * @adapter: board private structure
2113 * Free all receive software resources
2115 static void igb_free_all_rx_resources(struct igb_adapter
*adapter
)
2119 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2120 igb_free_rx_resources(&adapter
->rx_ring
[i
]);
2124 * igb_clean_rx_ring - Free Rx Buffers per Queue
2125 * @rx_ring: ring to free buffers from
2127 static void igb_clean_rx_ring(struct igb_ring
*rx_ring
)
2129 struct igb_adapter
*adapter
= rx_ring
->adapter
;
2130 struct igb_buffer
*buffer_info
;
2131 struct pci_dev
*pdev
= adapter
->pdev
;
2135 if (!rx_ring
->buffer_info
)
2137 /* Free all the Rx ring sk_buffs */
2138 for (i
= 0; i
< rx_ring
->count
; i
++) {
2139 buffer_info
= &rx_ring
->buffer_info
[i
];
2140 if (buffer_info
->dma
) {
2141 if (adapter
->rx_ps_hdr_size
)
2142 pci_unmap_single(pdev
, buffer_info
->dma
,
2143 adapter
->rx_ps_hdr_size
,
2144 PCI_DMA_FROMDEVICE
);
2146 pci_unmap_single(pdev
, buffer_info
->dma
,
2147 adapter
->rx_buffer_len
,
2148 PCI_DMA_FROMDEVICE
);
2149 buffer_info
->dma
= 0;
2152 if (buffer_info
->skb
) {
2153 dev_kfree_skb(buffer_info
->skb
);
2154 buffer_info
->skb
= NULL
;
2156 if (buffer_info
->page
) {
2157 if (buffer_info
->page_dma
)
2158 pci_unmap_page(pdev
, buffer_info
->page_dma
,
2160 PCI_DMA_FROMDEVICE
);
2161 put_page(buffer_info
->page
);
2162 buffer_info
->page
= NULL
;
2163 buffer_info
->page_dma
= 0;
2164 buffer_info
->page_offset
= 0;
2168 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
2169 memset(rx_ring
->buffer_info
, 0, size
);
2171 /* Zero out the descriptor ring */
2172 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2174 rx_ring
->next_to_clean
= 0;
2175 rx_ring
->next_to_use
= 0;
2177 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
2178 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
2182 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
2183 * @adapter: board private structure
2185 static void igb_clean_all_rx_rings(struct igb_adapter
*adapter
)
2189 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2190 igb_clean_rx_ring(&adapter
->rx_ring
[i
]);
2194 * igb_set_mac - Change the Ethernet Address of the NIC
2195 * @netdev: network interface device structure
2196 * @p: pointer to an address structure
2198 * Returns 0 on success, negative on failure
2200 static int igb_set_mac(struct net_device
*netdev
, void *p
)
2202 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2203 struct sockaddr
*addr
= p
;
2205 if (!is_valid_ether_addr(addr
->sa_data
))
2206 return -EADDRNOTAVAIL
;
2208 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2209 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
2211 adapter
->hw
.mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
2217 * igb_set_multi - Multicast and Promiscuous mode set
2218 * @netdev: network interface device structure
2220 * The set_multi entry point is called whenever the multicast address
2221 * list or the network interface flags are updated. This routine is
2222 * responsible for configuring the hardware for proper multicast,
2223 * promiscuous mode, and all-multi behavior.
2225 static void igb_set_multi(struct net_device
*netdev
)
2227 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2228 struct e1000_hw
*hw
= &adapter
->hw
;
2229 struct e1000_mac_info
*mac
= &hw
->mac
;
2230 struct dev_mc_list
*mc_ptr
;
2235 /* Check for Promiscuous and All Multicast modes */
2237 rctl
= rd32(E1000_RCTL
);
2239 if (netdev
->flags
& IFF_PROMISC
) {
2240 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2241 rctl
&= ~E1000_RCTL_VFE
;
2243 if (netdev
->flags
& IFF_ALLMULTI
) {
2244 rctl
|= E1000_RCTL_MPE
;
2245 rctl
&= ~E1000_RCTL_UPE
;
2247 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2248 rctl
|= E1000_RCTL_VFE
;
2250 wr32(E1000_RCTL
, rctl
);
2252 if (!netdev
->mc_count
) {
2253 /* nothing to program, so clear mc list */
2254 igb_update_mc_addr_list_82575(hw
, NULL
, 0, 1,
2255 mac
->rar_entry_count
);
2259 mta_list
= kzalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2263 /* The shared function expects a packed array of only addresses. */
2264 mc_ptr
= netdev
->mc_list
;
2266 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2269 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
, ETH_ALEN
);
2270 mc_ptr
= mc_ptr
->next
;
2272 igb_update_mc_addr_list_82575(hw
, mta_list
, i
, 1,
2273 mac
->rar_entry_count
);
2277 /* Need to wait a few seconds after link up to get diagnostic information from
2279 static void igb_update_phy_info(unsigned long data
)
2281 struct igb_adapter
*adapter
= (struct igb_adapter
*) data
;
2282 igb_get_phy_info(&adapter
->hw
);
2286 * igb_watchdog - Timer Call-back
2287 * @data: pointer to adapter cast into an unsigned long
2289 static void igb_watchdog(unsigned long data
)
2291 struct igb_adapter
*adapter
= (struct igb_adapter
*)data
;
2292 /* Do the rest outside of interrupt context */
2293 schedule_work(&adapter
->watchdog_task
);
2296 static void igb_watchdog_task(struct work_struct
*work
)
2298 struct igb_adapter
*adapter
= container_of(work
,
2299 struct igb_adapter
, watchdog_task
);
2300 struct e1000_hw
*hw
= &adapter
->hw
;
2302 struct net_device
*netdev
= adapter
->netdev
;
2303 struct igb_ring
*tx_ring
= adapter
->tx_ring
;
2304 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2310 if ((netif_carrier_ok(netdev
)) &&
2311 (rd32(E1000_STATUS
) & E1000_STATUS_LU
))
2314 ret_val
= hw
->mac
.ops
.check_for_link(&adapter
->hw
);
2315 if ((ret_val
== E1000_ERR_PHY
) &&
2316 (hw
->phy
.type
== e1000_phy_igp_3
) &&
2318 E1000_PHY_CTRL_GBE_DISABLE
))
2319 dev_info(&adapter
->pdev
->dev
,
2320 "Gigabit has been disabled, downgrading speed\n");
2322 if ((hw
->phy
.media_type
== e1000_media_type_internal_serdes
) &&
2323 !(rd32(E1000_TXCW
) & E1000_TXCW_ANE
))
2324 link
= mac
->serdes_has_link
;
2326 link
= rd32(E1000_STATUS
) &
2330 if (!netif_carrier_ok(netdev
)) {
2332 hw
->mac
.ops
.get_speed_and_duplex(&adapter
->hw
,
2333 &adapter
->link_speed
,
2334 &adapter
->link_duplex
);
2336 ctrl
= rd32(E1000_CTRL
);
2337 /* Links status message must follow this format */
2338 printk(KERN_INFO
"igb: %s NIC Link is Up %d Mbps %s, "
2339 "Flow Control: %s\n",
2341 adapter
->link_speed
,
2342 adapter
->link_duplex
== FULL_DUPLEX
?
2343 "Full Duplex" : "Half Duplex",
2344 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2345 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2346 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2347 E1000_CTRL_TFCE
) ? "TX" : "None")));
2349 /* tweak tx_queue_len according to speed/duplex and
2350 * adjust the timeout factor */
2351 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2352 adapter
->tx_timeout_factor
= 1;
2353 switch (adapter
->link_speed
) {
2355 netdev
->tx_queue_len
= 10;
2356 adapter
->tx_timeout_factor
= 14;
2359 netdev
->tx_queue_len
= 100;
2360 /* maybe add some timeout factor ? */
2364 netif_carrier_on(netdev
);
2365 netif_tx_wake_all_queues(netdev
);
2367 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2368 mod_timer(&adapter
->phy_info_timer
,
2369 round_jiffies(jiffies
+ 2 * HZ
));
2372 if (netif_carrier_ok(netdev
)) {
2373 adapter
->link_speed
= 0;
2374 adapter
->link_duplex
= 0;
2375 /* Links status message must follow this format */
2376 printk(KERN_INFO
"igb: %s NIC Link is Down\n",
2378 netif_carrier_off(netdev
);
2379 netif_tx_stop_all_queues(netdev
);
2380 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2381 mod_timer(&adapter
->phy_info_timer
,
2382 round_jiffies(jiffies
+ 2 * HZ
));
2387 igb_update_stats(adapter
);
2389 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2390 adapter
->tpt_old
= adapter
->stats
.tpt
;
2391 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2392 adapter
->colc_old
= adapter
->stats
.colc
;
2394 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
2395 adapter
->gorc_old
= adapter
->stats
.gorc
;
2396 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
2397 adapter
->gotc_old
= adapter
->stats
.gotc
;
2399 igb_update_adaptive(&adapter
->hw
);
2401 if (!netif_carrier_ok(netdev
)) {
2402 if (IGB_DESC_UNUSED(tx_ring
) + 1 < tx_ring
->count
) {
2403 /* We've lost link, so the controller stops DMA,
2404 * but we've got queued Tx work that's never going
2405 * to get done, so reset controller to flush Tx.
2406 * (Do the reset outside of interrupt context). */
2407 adapter
->tx_timeout_count
++;
2408 schedule_work(&adapter
->reset_task
);
2412 /* Cause software interrupt to ensure rx ring is cleaned */
2413 if (adapter
->msix_entries
) {
2414 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2415 eics
|= adapter
->rx_ring
[i
].eims_value
;
2416 wr32(E1000_EICS
, eics
);
2418 wr32(E1000_ICS
, E1000_ICS_RXDMT0
);
2421 /* Force detection of hung controller every watchdog period */
2422 tx_ring
->detect_tx_hung
= true;
2424 /* Reset the timer */
2425 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2426 mod_timer(&adapter
->watchdog_timer
,
2427 round_jiffies(jiffies
+ 2 * HZ
));
2430 enum latency_range
{
2434 latency_invalid
= 255
2439 * igb_update_ring_itr - update the dynamic ITR value based on packet size
2441 * Stores a new ITR value based on strictly on packet size. This
2442 * algorithm is less sophisticated than that used in igb_update_itr,
2443 * due to the difficulty of synchronizing statistics across multiple
2444 * receive rings. The divisors and thresholds used by this fuction
2445 * were determined based on theoretical maximum wire speed and testing
2446 * data, in order to minimize response time while increasing bulk
2448 * This functionality is controlled by the InterruptThrottleRate module
2449 * parameter (see igb_param.c)
2450 * NOTE: This function is called only when operating in a multiqueue
2451 * receive environment.
2452 * @rx_ring: pointer to ring
2454 static void igb_update_ring_itr(struct igb_ring
*rx_ring
)
2456 int new_val
= rx_ring
->itr_val
;
2457 int avg_wire_size
= 0;
2458 struct igb_adapter
*adapter
= rx_ring
->adapter
;
2460 if (!rx_ring
->total_packets
)
2461 goto clear_counts
; /* no packets, so don't do anything */
2463 /* For non-gigabit speeds, just fix the interrupt rate at 4000
2464 * ints/sec - ITR timer value of 120 ticks.
2466 if (adapter
->link_speed
!= SPEED_1000
) {
2470 avg_wire_size
= rx_ring
->total_bytes
/ rx_ring
->total_packets
;
2472 /* Add 24 bytes to size to account for CRC, preamble, and gap */
2473 avg_wire_size
+= 24;
2475 /* Don't starve jumbo frames */
2476 avg_wire_size
= min(avg_wire_size
, 3000);
2478 /* Give a little boost to mid-size frames */
2479 if ((avg_wire_size
> 300) && (avg_wire_size
< 1200))
2480 new_val
= avg_wire_size
/ 3;
2482 new_val
= avg_wire_size
/ 2;
2485 if (new_val
!= rx_ring
->itr_val
) {
2486 rx_ring
->itr_val
= new_val
;
2487 rx_ring
->set_itr
= 1;
2490 rx_ring
->total_bytes
= 0;
2491 rx_ring
->total_packets
= 0;
2495 * igb_update_itr - update the dynamic ITR value based on statistics
2496 * Stores a new ITR value based on packets and byte
2497 * counts during the last interrupt. The advantage of per interrupt
2498 * computation is faster updates and more accurate ITR for the current
2499 * traffic pattern. Constants in this function were computed
2500 * based on theoretical maximum wire speed and thresholds were set based
2501 * on testing data as well as attempting to minimize response time
2502 * while increasing bulk throughput.
2503 * this functionality is controlled by the InterruptThrottleRate module
2504 * parameter (see igb_param.c)
2505 * NOTE: These calculations are only valid when operating in a single-
2506 * queue environment.
2507 * @adapter: pointer to adapter
2508 * @itr_setting: current adapter->itr
2509 * @packets: the number of packets during this measurement interval
2510 * @bytes: the number of bytes during this measurement interval
2512 static unsigned int igb_update_itr(struct igb_adapter
*adapter
, u16 itr_setting
,
2513 int packets
, int bytes
)
2515 unsigned int retval
= itr_setting
;
2518 goto update_itr_done
;
2520 switch (itr_setting
) {
2521 case lowest_latency
:
2522 /* handle TSO and jumbo frames */
2523 if (bytes
/packets
> 8000)
2524 retval
= bulk_latency
;
2525 else if ((packets
< 5) && (bytes
> 512))
2526 retval
= low_latency
;
2528 case low_latency
: /* 50 usec aka 20000 ints/s */
2529 if (bytes
> 10000) {
2530 /* this if handles the TSO accounting */
2531 if (bytes
/packets
> 8000) {
2532 retval
= bulk_latency
;
2533 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
2534 retval
= bulk_latency
;
2535 } else if ((packets
> 35)) {
2536 retval
= lowest_latency
;
2538 } else if (bytes
/packets
> 2000) {
2539 retval
= bulk_latency
;
2540 } else if (packets
<= 2 && bytes
< 512) {
2541 retval
= lowest_latency
;
2544 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2545 if (bytes
> 25000) {
2547 retval
= low_latency
;
2548 } else if (bytes
< 6000) {
2549 retval
= low_latency
;
2558 static void igb_set_itr(struct igb_adapter
*adapter
)
2561 u32 new_itr
= adapter
->itr
;
2563 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2564 if (adapter
->link_speed
!= SPEED_1000
) {
2570 adapter
->rx_itr
= igb_update_itr(adapter
,
2572 adapter
->rx_ring
->total_packets
,
2573 adapter
->rx_ring
->total_bytes
);
2575 if (adapter
->rx_ring
->buddy
) {
2576 adapter
->tx_itr
= igb_update_itr(adapter
,
2578 adapter
->tx_ring
->total_packets
,
2579 adapter
->tx_ring
->total_bytes
);
2581 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2583 current_itr
= adapter
->rx_itr
;
2586 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2587 if (adapter
->itr_setting
== 3 &&
2588 current_itr
== lowest_latency
)
2589 current_itr
= low_latency
;
2591 switch (current_itr
) {
2592 /* counts and packets in update_itr are dependent on these numbers */
2593 case lowest_latency
:
2597 new_itr
= 20000; /* aka hwitr = ~200 */
2607 adapter
->rx_ring
->total_bytes
= 0;
2608 adapter
->rx_ring
->total_packets
= 0;
2609 if (adapter
->rx_ring
->buddy
) {
2610 adapter
->rx_ring
->buddy
->total_bytes
= 0;
2611 adapter
->rx_ring
->buddy
->total_packets
= 0;
2614 if (new_itr
!= adapter
->itr
) {
2615 /* this attempts to bias the interrupt rate towards Bulk
2616 * by adding intermediate steps when interrupt rate is
2618 new_itr
= new_itr
> adapter
->itr
?
2619 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2621 /* Don't write the value here; it resets the adapter's
2622 * internal timer, and causes us to delay far longer than
2623 * we should between interrupts. Instead, we write the ITR
2624 * value at the beginning of the next interrupt so the timing
2625 * ends up being correct.
2627 adapter
->itr
= new_itr
;
2628 adapter
->rx_ring
->itr_val
= 1000000000 / (new_itr
* 256);
2629 adapter
->rx_ring
->set_itr
= 1;
2636 #define IGB_TX_FLAGS_CSUM 0x00000001
2637 #define IGB_TX_FLAGS_VLAN 0x00000002
2638 #define IGB_TX_FLAGS_TSO 0x00000004
2639 #define IGB_TX_FLAGS_IPV4 0x00000008
2640 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
2641 #define IGB_TX_FLAGS_VLAN_SHIFT 16
2643 static inline int igb_tso_adv(struct igb_adapter
*adapter
,
2644 struct igb_ring
*tx_ring
,
2645 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2647 struct e1000_adv_tx_context_desc
*context_desc
;
2650 struct igb_buffer
*buffer_info
;
2651 u32 info
= 0, tu_cmd
= 0;
2652 u32 mss_l4len_idx
, l4len
;
2655 if (skb_header_cloned(skb
)) {
2656 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2661 l4len
= tcp_hdrlen(skb
);
2664 if (skb
->protocol
== htons(ETH_P_IP
)) {
2665 struct iphdr
*iph
= ip_hdr(skb
);
2668 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2672 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
2673 ipv6_hdr(skb
)->payload_len
= 0;
2674 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2675 &ipv6_hdr(skb
)->daddr
,
2679 i
= tx_ring
->next_to_use
;
2681 buffer_info
= &tx_ring
->buffer_info
[i
];
2682 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2683 /* VLAN MACLEN IPLEN */
2684 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2685 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2686 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2687 *hdr_len
+= skb_network_offset(skb
);
2688 info
|= skb_network_header_len(skb
);
2689 *hdr_len
+= skb_network_header_len(skb
);
2690 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2692 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2693 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2695 if (skb
->protocol
== htons(ETH_P_IP
))
2696 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2697 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2699 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2702 mss_l4len_idx
= (skb_shinfo(skb
)->gso_size
<< E1000_ADVTXD_MSS_SHIFT
);
2703 mss_l4len_idx
|= (l4len
<< E1000_ADVTXD_L4LEN_SHIFT
);
2705 /* Context index must be unique per ring. */
2706 if (adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
)
2707 mss_l4len_idx
|= tx_ring
->queue_index
<< 4;
2709 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2710 context_desc
->seqnum_seed
= 0;
2712 buffer_info
->time_stamp
= jiffies
;
2713 buffer_info
->next_to_watch
= i
;
2714 buffer_info
->dma
= 0;
2716 if (i
== tx_ring
->count
)
2719 tx_ring
->next_to_use
= i
;
2724 static inline bool igb_tx_csum_adv(struct igb_adapter
*adapter
,
2725 struct igb_ring
*tx_ring
,
2726 struct sk_buff
*skb
, u32 tx_flags
)
2728 struct e1000_adv_tx_context_desc
*context_desc
;
2730 struct igb_buffer
*buffer_info
;
2731 u32 info
= 0, tu_cmd
= 0;
2733 if ((skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
2734 (tx_flags
& IGB_TX_FLAGS_VLAN
)) {
2735 i
= tx_ring
->next_to_use
;
2736 buffer_info
= &tx_ring
->buffer_info
[i
];
2737 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2739 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2740 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2741 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2742 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2743 info
|= skb_network_header_len(skb
);
2745 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2747 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2749 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2750 switch (skb
->protocol
) {
2751 case cpu_to_be16(ETH_P_IP
):
2752 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2753 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2754 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2756 case cpu_to_be16(ETH_P_IPV6
):
2757 /* XXX what about other V6 headers?? */
2758 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2759 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2762 if (unlikely(net_ratelimit()))
2763 dev_warn(&adapter
->pdev
->dev
,
2764 "partial checksum but proto=%x!\n",
2770 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2771 context_desc
->seqnum_seed
= 0;
2772 if (adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
)
2773 context_desc
->mss_l4len_idx
=
2774 cpu_to_le32(tx_ring
->queue_index
<< 4);
2776 buffer_info
->time_stamp
= jiffies
;
2777 buffer_info
->next_to_watch
= i
;
2778 buffer_info
->dma
= 0;
2781 if (i
== tx_ring
->count
)
2783 tx_ring
->next_to_use
= i
;
2792 #define IGB_MAX_TXD_PWR 16
2793 #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR)
2795 static inline int igb_tx_map_adv(struct igb_adapter
*adapter
,
2796 struct igb_ring
*tx_ring
, struct sk_buff
*skb
,
2799 struct igb_buffer
*buffer_info
;
2800 unsigned int len
= skb_headlen(skb
);
2801 unsigned int count
= 0, i
;
2804 i
= tx_ring
->next_to_use
;
2806 buffer_info
= &tx_ring
->buffer_info
[i
];
2807 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
2808 buffer_info
->length
= len
;
2809 /* set time_stamp *before* dma to help avoid a possible race */
2810 buffer_info
->time_stamp
= jiffies
;
2811 buffer_info
->next_to_watch
= i
;
2812 buffer_info
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, len
,
2816 if (i
== tx_ring
->count
)
2819 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++) {
2820 struct skb_frag_struct
*frag
;
2822 frag
= &skb_shinfo(skb
)->frags
[f
];
2825 buffer_info
= &tx_ring
->buffer_info
[i
];
2826 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
2827 buffer_info
->length
= len
;
2828 buffer_info
->time_stamp
= jiffies
;
2829 buffer_info
->next_to_watch
= i
;
2830 buffer_info
->dma
= pci_map_page(adapter
->pdev
,
2838 if (i
== tx_ring
->count
)
2842 i
= ((i
== 0) ? tx_ring
->count
- 1 : i
- 1);
2843 tx_ring
->buffer_info
[i
].skb
= skb
;
2844 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2849 static inline void igb_tx_queue_adv(struct igb_adapter
*adapter
,
2850 struct igb_ring
*tx_ring
,
2851 int tx_flags
, int count
, u32 paylen
,
2854 union e1000_adv_tx_desc
*tx_desc
= NULL
;
2855 struct igb_buffer
*buffer_info
;
2856 u32 olinfo_status
= 0, cmd_type_len
;
2859 cmd_type_len
= (E1000_ADVTXD_DTYP_DATA
| E1000_ADVTXD_DCMD_IFCS
|
2860 E1000_ADVTXD_DCMD_DEXT
);
2862 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2863 cmd_type_len
|= E1000_ADVTXD_DCMD_VLE
;
2865 if (tx_flags
& IGB_TX_FLAGS_TSO
) {
2866 cmd_type_len
|= E1000_ADVTXD_DCMD_TSE
;
2868 /* insert tcp checksum */
2869 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2871 /* insert ip checksum */
2872 if (tx_flags
& IGB_TX_FLAGS_IPV4
)
2873 olinfo_status
|= E1000_TXD_POPTS_IXSM
<< 8;
2875 } else if (tx_flags
& IGB_TX_FLAGS_CSUM
) {
2876 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2879 if ((adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
) &&
2880 (tx_flags
& (IGB_TX_FLAGS_CSUM
| IGB_TX_FLAGS_TSO
|
2881 IGB_TX_FLAGS_VLAN
)))
2882 olinfo_status
|= tx_ring
->queue_index
<< 4;
2884 olinfo_status
|= ((paylen
- hdr_len
) << E1000_ADVTXD_PAYLEN_SHIFT
);
2886 i
= tx_ring
->next_to_use
;
2888 buffer_info
= &tx_ring
->buffer_info
[i
];
2889 tx_desc
= E1000_TX_DESC_ADV(*tx_ring
, i
);
2890 tx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2891 tx_desc
->read
.cmd_type_len
=
2892 cpu_to_le32(cmd_type_len
| buffer_info
->length
);
2893 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
2895 if (i
== tx_ring
->count
)
2899 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(adapter
->txd_cmd
);
2900 /* Force memory writes to complete before letting h/w
2901 * know there are new descriptors to fetch. (Only
2902 * applicable for weak-ordered memory model archs,
2903 * such as IA-64). */
2906 tx_ring
->next_to_use
= i
;
2907 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2908 /* we need this if more than one processor can write to our tail
2909 * at a time, it syncronizes IO on IA64/Altix systems */
2913 static int __igb_maybe_stop_tx(struct net_device
*netdev
,
2914 struct igb_ring
*tx_ring
, int size
)
2916 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2918 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
2920 /* Herbert's original patch had:
2921 * smp_mb__after_netif_stop_queue();
2922 * but since that doesn't exist yet, just open code it. */
2925 /* We need to check again in a case another CPU has just
2926 * made room available. */
2927 if (IGB_DESC_UNUSED(tx_ring
) < size
)
2931 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
2932 ++adapter
->restart_queue
;
2936 static int igb_maybe_stop_tx(struct net_device
*netdev
,
2937 struct igb_ring
*tx_ring
, int size
)
2939 if (IGB_DESC_UNUSED(tx_ring
) >= size
)
2941 return __igb_maybe_stop_tx(netdev
, tx_ring
, size
);
2944 #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1)
2946 static int igb_xmit_frame_ring_adv(struct sk_buff
*skb
,
2947 struct net_device
*netdev
,
2948 struct igb_ring
*tx_ring
)
2950 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2952 unsigned int tx_flags
= 0;
2957 len
= skb_headlen(skb
);
2959 if (test_bit(__IGB_DOWN
, &adapter
->state
)) {
2960 dev_kfree_skb_any(skb
);
2961 return NETDEV_TX_OK
;
2964 if (skb
->len
<= 0) {
2965 dev_kfree_skb_any(skb
);
2966 return NETDEV_TX_OK
;
2969 /* need: 1 descriptor per page,
2970 * + 2 desc gap to keep tail from touching head,
2971 * + 1 desc for skb->data,
2972 * + 1 desc for context descriptor,
2973 * otherwise try next time */
2974 if (igb_maybe_stop_tx(netdev
, tx_ring
, skb_shinfo(skb
)->nr_frags
+ 4)) {
2975 /* this is a hard error */
2976 return NETDEV_TX_BUSY
;
2980 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
2981 tx_flags
|= IGB_TX_FLAGS_VLAN
;
2982 tx_flags
|= (vlan_tx_tag_get(skb
) << IGB_TX_FLAGS_VLAN_SHIFT
);
2985 if (skb
->protocol
== htons(ETH_P_IP
))
2986 tx_flags
|= IGB_TX_FLAGS_IPV4
;
2988 first
= tx_ring
->next_to_use
;
2990 tso
= skb_is_gso(skb
) ? igb_tso_adv(adapter
, tx_ring
, skb
, tx_flags
,
2994 dev_kfree_skb_any(skb
);
2995 return NETDEV_TX_OK
;
2999 tx_flags
|= IGB_TX_FLAGS_TSO
;
3000 else if (igb_tx_csum_adv(adapter
, tx_ring
, skb
, tx_flags
))
3001 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3002 tx_flags
|= IGB_TX_FLAGS_CSUM
;
3004 igb_tx_queue_adv(adapter
, tx_ring
, tx_flags
,
3005 igb_tx_map_adv(adapter
, tx_ring
, skb
, first
),
3008 netdev
->trans_start
= jiffies
;
3010 /* Make sure there is space in the ring for the next send. */
3011 igb_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 4);
3013 return NETDEV_TX_OK
;
3016 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*netdev
)
3018 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3019 struct igb_ring
*tx_ring
;
3022 r_idx
= skb
->queue_mapping
& (IGB_MAX_TX_QUEUES
- 1);
3023 tx_ring
= adapter
->multi_tx_table
[r_idx
];
3025 /* This goes back to the question of how to logically map a tx queue
3026 * to a flow. Right now, performance is impacted slightly negatively
3027 * if using multiple tx queues. If the stack breaks away from a
3028 * single qdisc implementation, we can look at this again. */
3029 return (igb_xmit_frame_ring_adv(skb
, netdev
, tx_ring
));
3033 * igb_tx_timeout - Respond to a Tx Hang
3034 * @netdev: network interface device structure
3036 static void igb_tx_timeout(struct net_device
*netdev
)
3038 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3039 struct e1000_hw
*hw
= &adapter
->hw
;
3041 /* Do the reset outside of interrupt context */
3042 adapter
->tx_timeout_count
++;
3043 schedule_work(&adapter
->reset_task
);
3044 wr32(E1000_EICS
, adapter
->eims_enable_mask
&
3045 ~(E1000_EIMS_TCP_TIMER
| E1000_EIMS_OTHER
));
3048 static void igb_reset_task(struct work_struct
*work
)
3050 struct igb_adapter
*adapter
;
3051 adapter
= container_of(work
, struct igb_adapter
, reset_task
);
3053 igb_reinit_locked(adapter
);
3057 * igb_get_stats - Get System Network Statistics
3058 * @netdev: network interface device structure
3060 * Returns the address of the device statistics structure.
3061 * The statistics are actually updated from the timer callback.
3063 static struct net_device_stats
*
3064 igb_get_stats(struct net_device
*netdev
)
3066 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3068 /* only return the current stats */
3069 return &adapter
->net_stats
;
3073 * igb_change_mtu - Change the Maximum Transfer Unit
3074 * @netdev: network interface device structure
3075 * @new_mtu: new value for maximum frame size
3077 * Returns 0 on success, negative on failure
3079 static int igb_change_mtu(struct net_device
*netdev
, int new_mtu
)
3081 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3082 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3084 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
3085 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3086 dev_err(&adapter
->pdev
->dev
, "Invalid MTU setting\n");
3090 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3091 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3092 dev_err(&adapter
->pdev
->dev
, "MTU > 9216 not supported.\n");
3096 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
3098 /* igb_down has a dependency on max_frame_size */
3099 adapter
->max_frame_size
= max_frame
;
3100 if (netif_running(netdev
))
3103 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3104 * means we reserve 2 more, this pushes us to allocate from the next
3106 * i.e. RXBUFFER_2048 --> size-4096 slab
3109 if (max_frame
<= IGB_RXBUFFER_256
)
3110 adapter
->rx_buffer_len
= IGB_RXBUFFER_256
;
3111 else if (max_frame
<= IGB_RXBUFFER_512
)
3112 adapter
->rx_buffer_len
= IGB_RXBUFFER_512
;
3113 else if (max_frame
<= IGB_RXBUFFER_1024
)
3114 adapter
->rx_buffer_len
= IGB_RXBUFFER_1024
;
3115 else if (max_frame
<= IGB_RXBUFFER_2048
)
3116 adapter
->rx_buffer_len
= IGB_RXBUFFER_2048
;
3118 #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384
3119 adapter
->rx_buffer_len
= IGB_RXBUFFER_16384
;
3121 adapter
->rx_buffer_len
= PAGE_SIZE
/ 2;
3123 /* adjust allocation if LPE protects us, and we aren't using SBP */
3124 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
3125 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
))
3126 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3128 dev_info(&adapter
->pdev
->dev
, "changing MTU from %d to %d\n",
3129 netdev
->mtu
, new_mtu
);
3130 netdev
->mtu
= new_mtu
;
3132 if (netif_running(netdev
))
3137 clear_bit(__IGB_RESETTING
, &adapter
->state
);
3143 * igb_update_stats - Update the board statistics counters
3144 * @adapter: board private structure
3147 void igb_update_stats(struct igb_adapter
*adapter
)
3149 struct e1000_hw
*hw
= &adapter
->hw
;
3150 struct pci_dev
*pdev
= adapter
->pdev
;
3153 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3156 * Prevent stats update while adapter is being reset, or if the pci
3157 * connection is down.
3159 if (adapter
->link_speed
== 0)
3161 if (pci_channel_offline(pdev
))
3164 adapter
->stats
.crcerrs
+= rd32(E1000_CRCERRS
);
3165 adapter
->stats
.gprc
+= rd32(E1000_GPRC
);
3166 adapter
->stats
.gorc
+= rd32(E1000_GORCL
);
3167 rd32(E1000_GORCH
); /* clear GORCL */
3168 adapter
->stats
.bprc
+= rd32(E1000_BPRC
);
3169 adapter
->stats
.mprc
+= rd32(E1000_MPRC
);
3170 adapter
->stats
.roc
+= rd32(E1000_ROC
);
3172 adapter
->stats
.prc64
+= rd32(E1000_PRC64
);
3173 adapter
->stats
.prc127
+= rd32(E1000_PRC127
);
3174 adapter
->stats
.prc255
+= rd32(E1000_PRC255
);
3175 adapter
->stats
.prc511
+= rd32(E1000_PRC511
);
3176 adapter
->stats
.prc1023
+= rd32(E1000_PRC1023
);
3177 adapter
->stats
.prc1522
+= rd32(E1000_PRC1522
);
3178 adapter
->stats
.symerrs
+= rd32(E1000_SYMERRS
);
3179 adapter
->stats
.sec
+= rd32(E1000_SEC
);
3181 adapter
->stats
.mpc
+= rd32(E1000_MPC
);
3182 adapter
->stats
.scc
+= rd32(E1000_SCC
);
3183 adapter
->stats
.ecol
+= rd32(E1000_ECOL
);
3184 adapter
->stats
.mcc
+= rd32(E1000_MCC
);
3185 adapter
->stats
.latecol
+= rd32(E1000_LATECOL
);
3186 adapter
->stats
.dc
+= rd32(E1000_DC
);
3187 adapter
->stats
.rlec
+= rd32(E1000_RLEC
);
3188 adapter
->stats
.xonrxc
+= rd32(E1000_XONRXC
);
3189 adapter
->stats
.xontxc
+= rd32(E1000_XONTXC
);
3190 adapter
->stats
.xoffrxc
+= rd32(E1000_XOFFRXC
);
3191 adapter
->stats
.xofftxc
+= rd32(E1000_XOFFTXC
);
3192 adapter
->stats
.fcruc
+= rd32(E1000_FCRUC
);
3193 adapter
->stats
.gptc
+= rd32(E1000_GPTC
);
3194 adapter
->stats
.gotc
+= rd32(E1000_GOTCL
);
3195 rd32(E1000_GOTCH
); /* clear GOTCL */
3196 adapter
->stats
.rnbc
+= rd32(E1000_RNBC
);
3197 adapter
->stats
.ruc
+= rd32(E1000_RUC
);
3198 adapter
->stats
.rfc
+= rd32(E1000_RFC
);
3199 adapter
->stats
.rjc
+= rd32(E1000_RJC
);
3200 adapter
->stats
.tor
+= rd32(E1000_TORH
);
3201 adapter
->stats
.tot
+= rd32(E1000_TOTH
);
3202 adapter
->stats
.tpr
+= rd32(E1000_TPR
);
3204 adapter
->stats
.ptc64
+= rd32(E1000_PTC64
);
3205 adapter
->stats
.ptc127
+= rd32(E1000_PTC127
);
3206 adapter
->stats
.ptc255
+= rd32(E1000_PTC255
);
3207 adapter
->stats
.ptc511
+= rd32(E1000_PTC511
);
3208 adapter
->stats
.ptc1023
+= rd32(E1000_PTC1023
);
3209 adapter
->stats
.ptc1522
+= rd32(E1000_PTC1522
);
3211 adapter
->stats
.mptc
+= rd32(E1000_MPTC
);
3212 adapter
->stats
.bptc
+= rd32(E1000_BPTC
);
3214 /* used for adaptive IFS */
3216 hw
->mac
.tx_packet_delta
= rd32(E1000_TPT
);
3217 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3218 hw
->mac
.collision_delta
= rd32(E1000_COLC
);
3219 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3221 adapter
->stats
.algnerrc
+= rd32(E1000_ALGNERRC
);
3222 adapter
->stats
.rxerrc
+= rd32(E1000_RXERRC
);
3223 adapter
->stats
.tncrs
+= rd32(E1000_TNCRS
);
3224 adapter
->stats
.tsctc
+= rd32(E1000_TSCTC
);
3225 adapter
->stats
.tsctfc
+= rd32(E1000_TSCTFC
);
3227 adapter
->stats
.iac
+= rd32(E1000_IAC
);
3228 adapter
->stats
.icrxoc
+= rd32(E1000_ICRXOC
);
3229 adapter
->stats
.icrxptc
+= rd32(E1000_ICRXPTC
);
3230 adapter
->stats
.icrxatc
+= rd32(E1000_ICRXATC
);
3231 adapter
->stats
.ictxptc
+= rd32(E1000_ICTXPTC
);
3232 adapter
->stats
.ictxatc
+= rd32(E1000_ICTXATC
);
3233 adapter
->stats
.ictxqec
+= rd32(E1000_ICTXQEC
);
3234 adapter
->stats
.ictxqmtc
+= rd32(E1000_ICTXQMTC
);
3235 adapter
->stats
.icrxdmtc
+= rd32(E1000_ICRXDMTC
);
3237 /* Fill out the OS statistics structure */
3238 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3239 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3243 /* RLEC on some newer hardware can be incorrect so build
3244 * our own version based on RUC and ROC */
3245 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3246 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3247 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3248 adapter
->stats
.cexterr
;
3249 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3251 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3252 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3253 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3256 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3257 adapter
->stats
.latecol
;
3258 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3259 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3260 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3262 /* Tx Dropped needs to be maintained elsewhere */
3265 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
3266 if ((adapter
->link_speed
== SPEED_1000
) &&
3267 (!igb_read_phy_reg(hw
, PHY_1000T_STATUS
,
3269 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3270 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3274 /* Management Stats */
3275 adapter
->stats
.mgptc
+= rd32(E1000_MGTPTC
);
3276 adapter
->stats
.mgprc
+= rd32(E1000_MGTPRC
);
3277 adapter
->stats
.mgpdc
+= rd32(E1000_MGTPDC
);
3281 static irqreturn_t
igb_msix_other(int irq
, void *data
)
3283 struct net_device
*netdev
= data
;
3284 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3285 struct e1000_hw
*hw
= &adapter
->hw
;
3286 u32 icr
= rd32(E1000_ICR
);
3288 /* reading ICR causes bit 31 of EICR to be cleared */
3289 if (!(icr
& E1000_ICR_LSC
))
3290 goto no_link_interrupt
;
3291 hw
->mac
.get_link_status
= 1;
3292 /* guard against interrupt when we're going down */
3293 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3294 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3297 wr32(E1000_IMS
, E1000_IMS_LSC
);
3298 wr32(E1000_EIMS
, adapter
->eims_other
);
3303 static irqreturn_t
igb_msix_tx(int irq
, void *data
)
3305 struct igb_ring
*tx_ring
= data
;
3306 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3307 struct e1000_hw
*hw
= &adapter
->hw
;
3309 #ifdef CONFIG_IGB_DCA
3310 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3311 igb_update_tx_dca(tx_ring
);
3313 tx_ring
->total_bytes
= 0;
3314 tx_ring
->total_packets
= 0;
3316 /* auto mask will automatically reenable the interrupt when we write
3318 if (!igb_clean_tx_irq(tx_ring
))
3319 /* Ring was not completely cleaned, so fire another interrupt */
3320 wr32(E1000_EICS
, tx_ring
->eims_value
);
3322 wr32(E1000_EIMS
, tx_ring
->eims_value
);
3327 static void igb_write_itr(struct igb_ring
*ring
)
3329 struct e1000_hw
*hw
= &ring
->adapter
->hw
;
3330 if ((ring
->adapter
->itr_setting
& 3) && ring
->set_itr
) {
3331 switch (hw
->mac
.type
) {
3333 wr32(ring
->itr_register
,
3338 wr32(ring
->itr_register
,
3340 (ring
->itr_val
<< 16));
3347 static irqreturn_t
igb_msix_rx(int irq
, void *data
)
3349 struct igb_ring
*rx_ring
= data
;
3351 /* Write the ITR value calculated at the end of the
3352 * previous interrupt.
3355 igb_write_itr(rx_ring
);
3357 if (napi_schedule_prep(&rx_ring
->napi
))
3358 __napi_schedule(&rx_ring
->napi
);
3360 #ifdef CONFIG_IGB_DCA
3361 if (rx_ring
->adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3362 igb_update_rx_dca(rx_ring
);
3367 #ifdef CONFIG_IGB_DCA
3368 static void igb_update_rx_dca(struct igb_ring
*rx_ring
)
3371 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3372 struct e1000_hw
*hw
= &adapter
->hw
;
3373 int cpu
= get_cpu();
3374 int q
= rx_ring
->reg_idx
;
3376 if (rx_ring
->cpu
!= cpu
) {
3377 dca_rxctrl
= rd32(E1000_DCA_RXCTRL(q
));
3378 if (hw
->mac
.type
== e1000_82576
) {
3379 dca_rxctrl
&= ~E1000_DCA_RXCTRL_CPUID_MASK_82576
;
3380 dca_rxctrl
|= dca_get_tag(cpu
) <<
3381 E1000_DCA_RXCTRL_CPUID_SHIFT
;
3383 dca_rxctrl
&= ~E1000_DCA_RXCTRL_CPUID_MASK
;
3384 dca_rxctrl
|= dca_get_tag(cpu
);
3386 dca_rxctrl
|= E1000_DCA_RXCTRL_DESC_DCA_EN
;
3387 dca_rxctrl
|= E1000_DCA_RXCTRL_HEAD_DCA_EN
;
3388 dca_rxctrl
|= E1000_DCA_RXCTRL_DATA_DCA_EN
;
3389 wr32(E1000_DCA_RXCTRL(q
), dca_rxctrl
);
3395 static void igb_update_tx_dca(struct igb_ring
*tx_ring
)
3398 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3399 struct e1000_hw
*hw
= &adapter
->hw
;
3400 int cpu
= get_cpu();
3401 int q
= tx_ring
->reg_idx
;
3403 if (tx_ring
->cpu
!= cpu
) {
3404 dca_txctrl
= rd32(E1000_DCA_TXCTRL(q
));
3405 if (hw
->mac
.type
== e1000_82576
) {
3406 dca_txctrl
&= ~E1000_DCA_TXCTRL_CPUID_MASK_82576
;
3407 dca_txctrl
|= dca_get_tag(cpu
) <<
3408 E1000_DCA_TXCTRL_CPUID_SHIFT
;
3410 dca_txctrl
&= ~E1000_DCA_TXCTRL_CPUID_MASK
;
3411 dca_txctrl
|= dca_get_tag(cpu
);
3413 dca_txctrl
|= E1000_DCA_TXCTRL_DESC_DCA_EN
;
3414 wr32(E1000_DCA_TXCTRL(q
), dca_txctrl
);
3420 static void igb_setup_dca(struct igb_adapter
*adapter
)
3424 if (!(adapter
->flags
& IGB_FLAG_DCA_ENABLED
))
3427 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3428 adapter
->tx_ring
[i
].cpu
= -1;
3429 igb_update_tx_dca(&adapter
->tx_ring
[i
]);
3431 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3432 adapter
->rx_ring
[i
].cpu
= -1;
3433 igb_update_rx_dca(&adapter
->rx_ring
[i
]);
3437 static int __igb_notify_dca(struct device
*dev
, void *data
)
3439 struct net_device
*netdev
= dev_get_drvdata(dev
);
3440 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3441 struct e1000_hw
*hw
= &adapter
->hw
;
3442 unsigned long event
= *(unsigned long *)data
;
3445 case DCA_PROVIDER_ADD
:
3446 /* if already enabled, don't do it again */
3447 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3449 /* Always use CB2 mode, difference is masked
3450 * in the CB driver. */
3451 wr32(E1000_DCA_CTRL
, 2);
3452 if (dca_add_requester(dev
) == 0) {
3453 adapter
->flags
|= IGB_FLAG_DCA_ENABLED
;
3454 dev_info(&adapter
->pdev
->dev
, "DCA enabled\n");
3455 igb_setup_dca(adapter
);
3458 /* Fall Through since DCA is disabled. */
3459 case DCA_PROVIDER_REMOVE
:
3460 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
) {
3461 /* without this a class_device is left
3462 * hanging around in the sysfs model */
3463 dca_remove_requester(dev
);
3464 dev_info(&adapter
->pdev
->dev
, "DCA disabled\n");
3465 adapter
->flags
&= ~IGB_FLAG_DCA_ENABLED
;
3466 wr32(E1000_DCA_CTRL
, 1);
3474 static int igb_notify_dca(struct notifier_block
*nb
, unsigned long event
,
3479 ret_val
= driver_for_each_device(&igb_driver
.driver
, NULL
, &event
,
3482 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
3484 #endif /* CONFIG_IGB_DCA */
3487 * igb_intr_msi - Interrupt Handler
3488 * @irq: interrupt number
3489 * @data: pointer to a network interface device structure
3491 static irqreturn_t
igb_intr_msi(int irq
, void *data
)
3493 struct net_device
*netdev
= data
;
3494 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3495 struct e1000_hw
*hw
= &adapter
->hw
;
3496 /* read ICR disables interrupts using IAM */
3497 u32 icr
= rd32(E1000_ICR
);
3499 igb_write_itr(adapter
->rx_ring
);
3501 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3502 hw
->mac
.get_link_status
= 1;
3503 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3504 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3507 napi_schedule(&adapter
->rx_ring
[0].napi
);
3513 * igb_intr - Interrupt Handler
3514 * @irq: interrupt number
3515 * @data: pointer to a network interface device structure
3517 static irqreturn_t
igb_intr(int irq
, void *data
)
3519 struct net_device
*netdev
= data
;
3520 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3521 struct e1000_hw
*hw
= &adapter
->hw
;
3522 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3523 * need for the IMC write */
3524 u32 icr
= rd32(E1000_ICR
);
3527 return IRQ_NONE
; /* Not our interrupt */
3529 igb_write_itr(adapter
->rx_ring
);
3531 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3532 * not set, then the adapter didn't send an interrupt */
3533 if (!(icr
& E1000_ICR_INT_ASSERTED
))
3536 eicr
= rd32(E1000_EICR
);
3538 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3539 hw
->mac
.get_link_status
= 1;
3540 /* guard against interrupt when we're going down */
3541 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3542 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3545 napi_schedule(&adapter
->rx_ring
[0].napi
);
3551 * igb_poll - NAPI Rx polling callback
3552 * @napi: napi polling structure
3553 * @budget: count of how many packets we should handle
3555 static int igb_poll(struct napi_struct
*napi
, int budget
)
3557 struct igb_ring
*rx_ring
= container_of(napi
, struct igb_ring
, napi
);
3558 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3559 struct net_device
*netdev
= adapter
->netdev
;
3560 int tx_clean_complete
, work_done
= 0;
3562 /* this poll routine only supports one tx and one rx queue */
3563 #ifdef CONFIG_IGB_DCA
3564 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3565 igb_update_tx_dca(&adapter
->tx_ring
[0]);
3567 tx_clean_complete
= igb_clean_tx_irq(&adapter
->tx_ring
[0]);
3569 #ifdef CONFIG_IGB_DCA
3570 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3571 igb_update_rx_dca(&adapter
->rx_ring
[0]);
3573 igb_clean_rx_irq_adv(&adapter
->rx_ring
[0], &work_done
, budget
);
3575 /* If no Tx and not enough Rx work done, exit the polling mode */
3576 if ((tx_clean_complete
&& (work_done
< budget
)) ||
3577 !netif_running(netdev
)) {
3578 if (adapter
->itr_setting
& 3)
3579 igb_set_itr(adapter
);
3580 napi_complete(napi
);
3581 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3582 igb_irq_enable(adapter
);
3589 static int igb_clean_rx_ring_msix(struct napi_struct
*napi
, int budget
)
3591 struct igb_ring
*rx_ring
= container_of(napi
, struct igb_ring
, napi
);
3592 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3593 struct e1000_hw
*hw
= &adapter
->hw
;
3594 struct net_device
*netdev
= adapter
->netdev
;
3597 #ifdef CONFIG_IGB_DCA
3598 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3599 igb_update_rx_dca(rx_ring
);
3601 igb_clean_rx_irq_adv(rx_ring
, &work_done
, budget
);
3604 /* If not enough Rx work done, exit the polling mode */
3605 if ((work_done
== 0) || !netif_running(netdev
)) {
3606 napi_complete(napi
);
3608 if (adapter
->itr_setting
& 3) {
3609 if (adapter
->num_rx_queues
== 1)
3610 igb_set_itr(adapter
);
3612 igb_update_ring_itr(rx_ring
);
3615 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3616 wr32(E1000_EIMS
, rx_ring
->eims_value
);
3625 * igb_clean_tx_irq - Reclaim resources after transmit completes
3626 * @adapter: board private structure
3627 * returns true if ring is completely cleaned
3629 static bool igb_clean_tx_irq(struct igb_ring
*tx_ring
)
3631 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3632 struct net_device
*netdev
= adapter
->netdev
;
3633 struct e1000_hw
*hw
= &adapter
->hw
;
3634 struct igb_buffer
*buffer_info
;
3635 struct sk_buff
*skb
;
3636 union e1000_adv_tx_desc
*tx_desc
, *eop_desc
;
3637 unsigned int total_bytes
= 0, total_packets
= 0;
3638 unsigned int i
, eop
, count
= 0;
3639 bool cleaned
= false;
3641 i
= tx_ring
->next_to_clean
;
3642 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3643 eop_desc
= E1000_TX_DESC_ADV(*tx_ring
, eop
);
3645 while ((eop_desc
->wb
.status
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
3646 (count
< tx_ring
->count
)) {
3647 for (cleaned
= false; !cleaned
; count
++) {
3648 tx_desc
= E1000_TX_DESC_ADV(*tx_ring
, i
);
3649 buffer_info
= &tx_ring
->buffer_info
[i
];
3650 cleaned
= (i
== eop
);
3651 skb
= buffer_info
->skb
;
3654 unsigned int segs
, bytecount
;
3655 /* gso_segs is currently only valid for tcp */
3656 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3657 /* multiply data chunks by size of headers */
3658 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3660 total_packets
+= segs
;
3661 total_bytes
+= bytecount
;
3664 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
3665 tx_desc
->wb
.status
= 0;
3668 if (i
== tx_ring
->count
)
3672 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3673 eop_desc
= E1000_TX_DESC_ADV(*tx_ring
, eop
);
3676 tx_ring
->next_to_clean
= i
;
3678 if (unlikely(count
&&
3679 netif_carrier_ok(netdev
) &&
3680 IGB_DESC_UNUSED(tx_ring
) >= IGB_TX_QUEUE_WAKE
)) {
3681 /* Make sure that anybody stopping the queue after this
3682 * sees the new next_to_clean.
3685 if (__netif_subqueue_stopped(netdev
, tx_ring
->queue_index
) &&
3686 !(test_bit(__IGB_DOWN
, &adapter
->state
))) {
3687 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
3688 ++adapter
->restart_queue
;
3692 if (tx_ring
->detect_tx_hung
) {
3693 /* Detect a transmit hang in hardware, this serializes the
3694 * check with the clearing of time_stamp and movement of i */
3695 tx_ring
->detect_tx_hung
= false;
3696 if (tx_ring
->buffer_info
[i
].time_stamp
&&
3697 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+
3698 (adapter
->tx_timeout_factor
* HZ
))
3699 && !(rd32(E1000_STATUS
) &
3700 E1000_STATUS_TXOFF
)) {
3702 /* detected Tx unit hang */
3703 dev_err(&adapter
->pdev
->dev
,
3704 "Detected Tx Unit Hang\n"
3708 " next_to_use <%x>\n"
3709 " next_to_clean <%x>\n"
3710 "buffer_info[next_to_clean]\n"
3711 " time_stamp <%lx>\n"
3712 " next_to_watch <%x>\n"
3714 " desc.status <%x>\n",
3715 tx_ring
->queue_index
,
3716 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
3717 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
3718 tx_ring
->next_to_use
,
3719 tx_ring
->next_to_clean
,
3720 tx_ring
->buffer_info
[i
].time_stamp
,
3723 eop_desc
->wb
.status
);
3724 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
3727 tx_ring
->total_bytes
+= total_bytes
;
3728 tx_ring
->total_packets
+= total_packets
;
3729 tx_ring
->tx_stats
.bytes
+= total_bytes
;
3730 tx_ring
->tx_stats
.packets
+= total_packets
;
3731 adapter
->net_stats
.tx_bytes
+= total_bytes
;
3732 adapter
->net_stats
.tx_packets
+= total_packets
;
3733 return (count
< tx_ring
->count
);
3737 * igb_receive_skb - helper function to handle rx indications
3738 * @ring: pointer to receive ring receving this packet
3739 * @status: descriptor status field as written by hardware
3740 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
3741 * @skb: pointer to sk_buff to be indicated to stack
3743 static void igb_receive_skb(struct igb_ring
*ring
, u8 status
,
3744 union e1000_adv_rx_desc
* rx_desc
,
3745 struct sk_buff
*skb
)
3747 struct igb_adapter
* adapter
= ring
->adapter
;
3748 bool vlan_extracted
= (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
));
3750 skb_record_rx_queue(skb
, ring
->queue_index
);
3751 if (skb
->ip_summed
== CHECKSUM_UNNECESSARY
) {
3753 vlan_gro_receive(&ring
->napi
, adapter
->vlgrp
,
3754 le16_to_cpu(rx_desc
->wb
.upper
.vlan
),
3757 napi_gro_receive(&ring
->napi
, skb
);
3760 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3761 le16_to_cpu(rx_desc
->wb
.upper
.vlan
));
3763 netif_receive_skb(skb
);
3768 static inline void igb_rx_checksum_adv(struct igb_adapter
*adapter
,
3769 u32 status_err
, struct sk_buff
*skb
)
3771 skb
->ip_summed
= CHECKSUM_NONE
;
3773 /* Ignore Checksum bit is set or checksum is disabled through ethtool */
3774 if ((status_err
& E1000_RXD_STAT_IXSM
) || !adapter
->rx_csum
)
3776 /* TCP/UDP checksum error bit is set */
3778 (E1000_RXDEXT_STATERR_TCPE
| E1000_RXDEXT_STATERR_IPE
)) {
3779 /* let the stack verify checksum errors */
3780 adapter
->hw_csum_err
++;
3783 /* It must be a TCP or UDP packet with a valid checksum */
3784 if (status_err
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
))
3785 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3787 adapter
->hw_csum_good
++;
3790 static bool igb_clean_rx_irq_adv(struct igb_ring
*rx_ring
,
3791 int *work_done
, int budget
)
3793 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3794 struct net_device
*netdev
= adapter
->netdev
;
3795 struct pci_dev
*pdev
= adapter
->pdev
;
3796 union e1000_adv_rx_desc
*rx_desc
, *next_rxd
;
3797 struct igb_buffer
*buffer_info
, *next_buffer
;
3798 struct sk_buff
*skb
;
3800 u32 length
, hlen
, staterr
;
3801 bool cleaned
= false;
3802 int cleaned_count
= 0;
3803 unsigned int total_bytes
= 0, total_packets
= 0;
3805 i
= rx_ring
->next_to_clean
;
3806 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3807 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3809 while (staterr
& E1000_RXD_STAT_DD
) {
3810 if (*work_done
>= budget
)
3813 buffer_info
= &rx_ring
->buffer_info
[i
];
3815 /* HW will not DMA in data larger than the given buffer, even
3816 * if it parses the (NFS, of course) header to be larger. In
3817 * that case, it fills the header buffer and spills the rest
3820 hlen
= (le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hdr_info
) &
3821 E1000_RXDADV_HDRBUFLEN_MASK
) >> E1000_RXDADV_HDRBUFLEN_SHIFT
;
3822 if (hlen
> adapter
->rx_ps_hdr_size
)
3823 hlen
= adapter
->rx_ps_hdr_size
;
3825 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
3829 skb
= buffer_info
->skb
;
3830 prefetch(skb
->data
- NET_IP_ALIGN
);
3831 buffer_info
->skb
= NULL
;
3832 if (!adapter
->rx_ps_hdr_size
) {
3833 pci_unmap_single(pdev
, buffer_info
->dma
,
3834 adapter
->rx_buffer_len
+
3836 PCI_DMA_FROMDEVICE
);
3837 skb_put(skb
, length
);
3841 if (!skb_shinfo(skb
)->nr_frags
) {
3842 pci_unmap_single(pdev
, buffer_info
->dma
,
3843 adapter
->rx_ps_hdr_size
+
3845 PCI_DMA_FROMDEVICE
);
3850 pci_unmap_page(pdev
, buffer_info
->page_dma
,
3851 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
3852 buffer_info
->page_dma
= 0;
3854 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
++,
3856 buffer_info
->page_offset
,
3859 if ((adapter
->rx_buffer_len
> (PAGE_SIZE
/ 2)) ||
3860 (page_count(buffer_info
->page
) != 1))
3861 buffer_info
->page
= NULL
;
3863 get_page(buffer_info
->page
);
3866 skb
->data_len
+= length
;
3868 skb
->truesize
+= length
;
3872 if (i
== rx_ring
->count
)
3874 next_rxd
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3876 next_buffer
= &rx_ring
->buffer_info
[i
];
3878 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
3879 buffer_info
->skb
= next_buffer
->skb
;
3880 buffer_info
->dma
= next_buffer
->dma
;
3881 next_buffer
->skb
= skb
;
3882 next_buffer
->dma
= 0;
3886 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
3887 dev_kfree_skb_irq(skb
);
3891 total_bytes
+= skb
->len
;
3894 igb_rx_checksum_adv(adapter
, staterr
, skb
);
3896 skb
->protocol
= eth_type_trans(skb
, netdev
);
3898 igb_receive_skb(rx_ring
, staterr
, rx_desc
, skb
);
3901 rx_desc
->wb
.upper
.status_error
= 0;
3903 /* return some buffers to hardware, one at a time is too slow */
3904 if (cleaned_count
>= IGB_RX_BUFFER_WRITE
) {
3905 igb_alloc_rx_buffers_adv(rx_ring
, cleaned_count
);
3909 /* use prefetched values */
3911 buffer_info
= next_buffer
;
3913 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3916 rx_ring
->next_to_clean
= i
;
3917 cleaned_count
= IGB_DESC_UNUSED(rx_ring
);
3920 igb_alloc_rx_buffers_adv(rx_ring
, cleaned_count
);
3922 rx_ring
->total_packets
+= total_packets
;
3923 rx_ring
->total_bytes
+= total_bytes
;
3924 rx_ring
->rx_stats
.packets
+= total_packets
;
3925 rx_ring
->rx_stats
.bytes
+= total_bytes
;
3926 adapter
->net_stats
.rx_bytes
+= total_bytes
;
3927 adapter
->net_stats
.rx_packets
+= total_packets
;
3933 * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
3934 * @adapter: address of board private structure
3936 static void igb_alloc_rx_buffers_adv(struct igb_ring
*rx_ring
,
3939 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3940 struct net_device
*netdev
= adapter
->netdev
;
3941 struct pci_dev
*pdev
= adapter
->pdev
;
3942 union e1000_adv_rx_desc
*rx_desc
;
3943 struct igb_buffer
*buffer_info
;
3944 struct sk_buff
*skb
;
3947 i
= rx_ring
->next_to_use
;
3948 buffer_info
= &rx_ring
->buffer_info
[i
];
3950 while (cleaned_count
--) {
3951 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3953 if (adapter
->rx_ps_hdr_size
&& !buffer_info
->page_dma
) {
3954 if (!buffer_info
->page
) {
3955 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
3956 if (!buffer_info
->page
) {
3957 adapter
->alloc_rx_buff_failed
++;
3960 buffer_info
->page_offset
= 0;
3962 buffer_info
->page_offset
^= PAGE_SIZE
/ 2;
3964 buffer_info
->page_dma
=
3967 buffer_info
->page_offset
,
3969 PCI_DMA_FROMDEVICE
);
3972 if (!buffer_info
->skb
) {
3975 if (adapter
->rx_ps_hdr_size
)
3976 bufsz
= adapter
->rx_ps_hdr_size
;
3978 bufsz
= adapter
->rx_buffer_len
;
3979 bufsz
+= NET_IP_ALIGN
;
3980 skb
= netdev_alloc_skb(netdev
, bufsz
);
3983 adapter
->alloc_rx_buff_failed
++;
3987 /* Make buffer alignment 2 beyond a 16 byte boundary
3988 * this will result in a 16 byte aligned IP header after
3989 * the 14 byte MAC header is removed
3991 skb_reserve(skb
, NET_IP_ALIGN
);
3993 buffer_info
->skb
= skb
;
3994 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3996 PCI_DMA_FROMDEVICE
);
3999 /* Refresh the desc even if buffer_addrs didn't change because
4000 * each write-back erases this info. */
4001 if (adapter
->rx_ps_hdr_size
) {
4002 rx_desc
->read
.pkt_addr
=
4003 cpu_to_le64(buffer_info
->page_dma
);
4004 rx_desc
->read
.hdr_addr
= cpu_to_le64(buffer_info
->dma
);
4006 rx_desc
->read
.pkt_addr
=
4007 cpu_to_le64(buffer_info
->dma
);
4008 rx_desc
->read
.hdr_addr
= 0;
4012 if (i
== rx_ring
->count
)
4014 buffer_info
= &rx_ring
->buffer_info
[i
];
4018 if (rx_ring
->next_to_use
!= i
) {
4019 rx_ring
->next_to_use
= i
;
4021 i
= (rx_ring
->count
- 1);
4025 /* Force memory writes to complete before letting h/w
4026 * know there are new descriptors to fetch. (Only
4027 * applicable for weak-ordered memory model archs,
4028 * such as IA-64). */
4030 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
4040 static int igb_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4042 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4043 struct mii_ioctl_data
*data
= if_mii(ifr
);
4045 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4050 data
->phy_id
= adapter
->hw
.phy
.addr
;
4053 if (!capable(CAP_NET_ADMIN
))
4055 if (igb_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4072 static int igb_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4078 return igb_mii_ioctl(netdev
, ifr
, cmd
);
4084 static void igb_vlan_rx_register(struct net_device
*netdev
,
4085 struct vlan_group
*grp
)
4087 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4088 struct e1000_hw
*hw
= &adapter
->hw
;
4091 igb_irq_disable(adapter
);
4092 adapter
->vlgrp
= grp
;
4095 /* enable VLAN tag insert/strip */
4096 ctrl
= rd32(E1000_CTRL
);
4097 ctrl
|= E1000_CTRL_VME
;
4098 wr32(E1000_CTRL
, ctrl
);
4100 /* enable VLAN receive filtering */
4101 rctl
= rd32(E1000_RCTL
);
4102 rctl
&= ~E1000_RCTL_CFIEN
;
4103 wr32(E1000_RCTL
, rctl
);
4104 igb_update_mng_vlan(adapter
);
4106 adapter
->max_frame_size
+ VLAN_TAG_SIZE
);
4108 /* disable VLAN tag insert/strip */
4109 ctrl
= rd32(E1000_CTRL
);
4110 ctrl
&= ~E1000_CTRL_VME
;
4111 wr32(E1000_CTRL
, ctrl
);
4113 if (adapter
->mng_vlan_id
!= (u16
)IGB_MNG_VLAN_NONE
) {
4114 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4115 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
4118 adapter
->max_frame_size
);
4121 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4122 igb_irq_enable(adapter
);
4125 static void igb_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4127 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4128 struct e1000_hw
*hw
= &adapter
->hw
;
4131 if ((adapter
->hw
.mng_cookie
.status
&
4132 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
4133 (vid
== adapter
->mng_vlan_id
))
4135 /* add VID to filter table */
4136 index
= (vid
>> 5) & 0x7F;
4137 vfta
= array_rd32(E1000_VFTA
, index
);
4138 vfta
|= (1 << (vid
& 0x1F));
4139 igb_write_vfta(&adapter
->hw
, index
, vfta
);
4142 static void igb_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4144 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4145 struct e1000_hw
*hw
= &adapter
->hw
;
4148 igb_irq_disable(adapter
);
4149 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4151 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4152 igb_irq_enable(adapter
);
4154 if ((adapter
->hw
.mng_cookie
.status
&
4155 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
4156 (vid
== adapter
->mng_vlan_id
)) {
4157 /* release control to f/w */
4158 igb_release_hw_control(adapter
);
4162 /* remove VID from filter table */
4163 index
= (vid
>> 5) & 0x7F;
4164 vfta
= array_rd32(E1000_VFTA
, index
);
4165 vfta
&= ~(1 << (vid
& 0x1F));
4166 igb_write_vfta(&adapter
->hw
, index
, vfta
);
4169 static void igb_restore_vlan(struct igb_adapter
*adapter
)
4171 igb_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4173 if (adapter
->vlgrp
) {
4175 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4176 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4178 igb_vlan_rx_add_vid(adapter
->netdev
, vid
);
4183 int igb_set_spd_dplx(struct igb_adapter
*adapter
, u16 spddplx
)
4185 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4189 /* Fiber NICs only allow 1000 gbps Full duplex */
4190 if ((adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
) &&
4191 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4192 dev_err(&adapter
->pdev
->dev
,
4193 "Unsupported Speed/Duplex configuration\n");
4198 case SPEED_10
+ DUPLEX_HALF
:
4199 mac
->forced_speed_duplex
= ADVERTISE_10_HALF
;
4201 case SPEED_10
+ DUPLEX_FULL
:
4202 mac
->forced_speed_duplex
= ADVERTISE_10_FULL
;
4204 case SPEED_100
+ DUPLEX_HALF
:
4205 mac
->forced_speed_duplex
= ADVERTISE_100_HALF
;
4207 case SPEED_100
+ DUPLEX_FULL
:
4208 mac
->forced_speed_duplex
= ADVERTISE_100_FULL
;
4210 case SPEED_1000
+ DUPLEX_FULL
:
4212 adapter
->hw
.phy
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4214 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4216 dev_err(&adapter
->pdev
->dev
,
4217 "Unsupported Speed/Duplex configuration\n");
4224 static int igb_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4226 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4227 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4228 struct e1000_hw
*hw
= &adapter
->hw
;
4229 u32 ctrl
, rctl
, status
;
4230 u32 wufc
= adapter
->wol
;
4235 netif_device_detach(netdev
);
4237 if (netif_running(netdev
))
4240 igb_reset_interrupt_capability(adapter
);
4242 igb_free_queues(adapter
);
4245 retval
= pci_save_state(pdev
);
4250 status
= rd32(E1000_STATUS
);
4251 if (status
& E1000_STATUS_LU
)
4252 wufc
&= ~E1000_WUFC_LNKC
;
4255 igb_setup_rctl(adapter
);
4256 igb_set_multi(netdev
);
4258 /* turn on all-multi mode if wake on multicast is enabled */
4259 if (wufc
& E1000_WUFC_MC
) {
4260 rctl
= rd32(E1000_RCTL
);
4261 rctl
|= E1000_RCTL_MPE
;
4262 wr32(E1000_RCTL
, rctl
);
4265 ctrl
= rd32(E1000_CTRL
);
4266 /* advertise wake from D3Cold */
4267 #define E1000_CTRL_ADVD3WUC 0x00100000
4268 /* phy power management enable */
4269 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4270 ctrl
|= E1000_CTRL_ADVD3WUC
;
4271 wr32(E1000_CTRL
, ctrl
);
4273 /* Allow time for pending master requests to run */
4274 igb_disable_pcie_master(&adapter
->hw
);
4276 wr32(E1000_WUC
, E1000_WUC_PME_EN
);
4277 wr32(E1000_WUFC
, wufc
);
4280 wr32(E1000_WUFC
, 0);
4283 /* make sure adapter isn't asleep if manageability/wol is enabled */
4284 if (wufc
|| adapter
->en_mng_pt
) {
4285 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4286 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4288 igb_shutdown_fiber_serdes_link_82575(hw
);
4289 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4290 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4293 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4294 * would have already happened in close and is redundant. */
4295 igb_release_hw_control(adapter
);
4297 pci_disable_device(pdev
);
4299 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4305 static int igb_resume(struct pci_dev
*pdev
)
4307 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4308 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4309 struct e1000_hw
*hw
= &adapter
->hw
;
4312 pci_set_power_state(pdev
, PCI_D0
);
4313 pci_restore_state(pdev
);
4315 if (adapter
->need_ioport
)
4316 err
= pci_enable_device(pdev
);
4318 err
= pci_enable_device_mem(pdev
);
4321 "igb: Cannot enable PCI device from suspend\n");
4324 pci_set_master(pdev
);
4326 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4327 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4329 igb_set_interrupt_capability(adapter
);
4331 if (igb_alloc_queues(adapter
)) {
4332 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
4336 /* e1000_power_up_phy(adapter); */
4339 wr32(E1000_WUS
, ~0);
4341 if (netif_running(netdev
)) {
4342 err
= igb_open(netdev
);
4347 netif_device_attach(netdev
);
4349 /* let the f/w know that the h/w is now under the control of the
4351 igb_get_hw_control(adapter
);
4357 static void igb_shutdown(struct pci_dev
*pdev
)
4359 igb_suspend(pdev
, PMSG_SUSPEND
);
4362 #ifdef CONFIG_NET_POLL_CONTROLLER
4364 * Polling 'interrupt' - used by things like netconsole to send skbs
4365 * without having to re-enable interrupts. It's not called while
4366 * the interrupt routine is executing.
4368 static void igb_netpoll(struct net_device
*netdev
)
4370 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4374 igb_irq_disable(adapter
);
4375 adapter
->flags
|= IGB_FLAG_IN_NETPOLL
;
4377 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4378 igb_clean_tx_irq(&adapter
->tx_ring
[i
]);
4380 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4381 igb_clean_rx_irq_adv(&adapter
->rx_ring
[i
],
4383 adapter
->rx_ring
[i
].napi
.weight
);
4385 adapter
->flags
&= ~IGB_FLAG_IN_NETPOLL
;
4386 igb_irq_enable(adapter
);
4388 #endif /* CONFIG_NET_POLL_CONTROLLER */
4391 * igb_io_error_detected - called when PCI error is detected
4392 * @pdev: Pointer to PCI device
4393 * @state: The current pci connection state
4395 * This function is called after a PCI bus error affecting
4396 * this device has been detected.
4398 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*pdev
,
4399 pci_channel_state_t state
)
4401 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4402 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4404 netif_device_detach(netdev
);
4406 if (netif_running(netdev
))
4408 pci_disable_device(pdev
);
4410 /* Request a slot slot reset. */
4411 return PCI_ERS_RESULT_NEED_RESET
;
4415 * igb_io_slot_reset - called after the pci bus has been reset.
4416 * @pdev: Pointer to PCI device
4418 * Restart the card from scratch, as if from a cold-boot. Implementation
4419 * resembles the first-half of the igb_resume routine.
4421 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*pdev
)
4423 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4424 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4425 struct e1000_hw
*hw
= &adapter
->hw
;
4426 pci_ers_result_t result
;
4429 if (adapter
->need_ioport
)
4430 err
= pci_enable_device(pdev
);
4432 err
= pci_enable_device_mem(pdev
);
4436 "Cannot re-enable PCI device after reset.\n");
4437 result
= PCI_ERS_RESULT_DISCONNECT
;
4439 pci_set_master(pdev
);
4440 pci_restore_state(pdev
);
4442 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4443 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4446 wr32(E1000_WUS
, ~0);
4447 result
= PCI_ERS_RESULT_RECOVERED
;
4450 err
= pci_cleanup_aer_uncorrect_error_status(pdev
);
4452 dev_err(&pdev
->dev
, "pci_cleanup_aer_uncorrect_error_status "
4453 "failed 0x%0x\n", err
);
4454 /* non-fatal, continue */
4461 * igb_io_resume - called when traffic can start flowing again.
4462 * @pdev: Pointer to PCI device
4464 * This callback is called when the error recovery driver tells us that
4465 * its OK to resume normal operation. Implementation resembles the
4466 * second-half of the igb_resume routine.
4468 static void igb_io_resume(struct pci_dev
*pdev
)
4470 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4471 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4473 if (netif_running(netdev
)) {
4474 if (igb_up(adapter
)) {
4475 dev_err(&pdev
->dev
, "igb_up failed after reset\n");
4480 netif_device_attach(netdev
);
4482 /* let the f/w know that the h/w is now under the control of the
4484 igb_get_hw_control(adapter
);