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 #ifdef CONFIG_IGB_LRO
119 static int igb_get_skb_hdr(struct sk_buff
*skb
, void **, void **, u64
*, void *);
121 static int igb_ioctl(struct net_device
*, struct ifreq
*, int cmd
);
122 static void igb_tx_timeout(struct net_device
*);
123 static void igb_reset_task(struct work_struct
*);
124 static void igb_vlan_rx_register(struct net_device
*, struct vlan_group
*);
125 static void igb_vlan_rx_add_vid(struct net_device
*, u16
);
126 static void igb_vlan_rx_kill_vid(struct net_device
*, u16
);
127 static void igb_restore_vlan(struct igb_adapter
*);
129 static int igb_suspend(struct pci_dev
*, pm_message_t
);
131 static int igb_resume(struct pci_dev
*);
133 static void igb_shutdown(struct pci_dev
*);
134 #ifdef CONFIG_IGB_DCA
135 static int igb_notify_dca(struct notifier_block
*, unsigned long, void *);
136 static struct notifier_block dca_notifier
= {
137 .notifier_call
= igb_notify_dca
,
143 #ifdef CONFIG_NET_POLL_CONTROLLER
144 /* for netdump / net console */
145 static void igb_netpoll(struct net_device
*);
148 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*,
149 pci_channel_state_t
);
150 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*);
151 static void igb_io_resume(struct pci_dev
*);
153 static struct pci_error_handlers igb_err_handler
= {
154 .error_detected
= igb_io_error_detected
,
155 .slot_reset
= igb_io_slot_reset
,
156 .resume
= igb_io_resume
,
160 static struct pci_driver igb_driver
= {
161 .name
= igb_driver_name
,
162 .id_table
= igb_pci_tbl
,
164 .remove
= __devexit_p(igb_remove
),
166 /* Power Managment Hooks */
167 .suspend
= igb_suspend
,
168 .resume
= igb_resume
,
170 .shutdown
= igb_shutdown
,
171 .err_handler
= &igb_err_handler
174 static int global_quad_port_a
; /* global quad port a indication */
176 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
177 MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
178 MODULE_LICENSE("GPL");
179 MODULE_VERSION(DRV_VERSION
);
183 * igb_get_hw_dev_name - return device name string
184 * used by hardware layer to print debugging information
186 char *igb_get_hw_dev_name(struct e1000_hw
*hw
)
188 struct igb_adapter
*adapter
= hw
->back
;
189 return adapter
->netdev
->name
;
194 * igb_init_module - Driver Registration Routine
196 * igb_init_module is the first routine called when the driver is
197 * loaded. All it does is register with the PCI subsystem.
199 static int __init
igb_init_module(void)
202 printk(KERN_INFO
"%s - version %s\n",
203 igb_driver_string
, igb_driver_version
);
205 printk(KERN_INFO
"%s\n", igb_copyright
);
207 global_quad_port_a
= 0;
209 ret
= pci_register_driver(&igb_driver
);
210 #ifdef CONFIG_IGB_DCA
211 dca_register_notify(&dca_notifier
);
216 module_init(igb_init_module
);
219 * igb_exit_module - Driver Exit Cleanup Routine
221 * igb_exit_module is called just before the driver is removed
224 static void __exit
igb_exit_module(void)
226 #ifdef CONFIG_IGB_DCA
227 dca_unregister_notify(&dca_notifier
);
229 pci_unregister_driver(&igb_driver
);
232 module_exit(igb_exit_module
);
235 * igb_alloc_queues - Allocate memory for all rings
236 * @adapter: board private structure to initialize
238 * We allocate one ring per queue at run-time since we don't know the
239 * number of queues at compile-time.
241 static int igb_alloc_queues(struct igb_adapter
*adapter
)
245 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
246 sizeof(struct igb_ring
), GFP_KERNEL
);
247 if (!adapter
->tx_ring
)
250 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
251 sizeof(struct igb_ring
), GFP_KERNEL
);
252 if (!adapter
->rx_ring
) {
253 kfree(adapter
->tx_ring
);
257 adapter
->rx_ring
->buddy
= adapter
->tx_ring
;
259 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
260 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
261 ring
->count
= adapter
->tx_ring_count
;
262 ring
->adapter
= adapter
;
263 ring
->queue_index
= i
;
265 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
266 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
267 ring
->count
= adapter
->rx_ring_count
;
268 ring
->adapter
= adapter
;
269 ring
->queue_index
= i
;
270 ring
->itr_register
= E1000_ITR
;
272 /* set a default napi handler for each rx_ring */
273 netif_napi_add(adapter
->netdev
, &ring
->napi
, igb_poll
, 64);
278 static void igb_free_queues(struct igb_adapter
*adapter
)
282 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
283 netif_napi_del(&adapter
->rx_ring
[i
].napi
);
285 kfree(adapter
->tx_ring
);
286 kfree(adapter
->rx_ring
);
289 #define IGB_N0_QUEUE -1
290 static void igb_assign_vector(struct igb_adapter
*adapter
, int rx_queue
,
291 int tx_queue
, int msix_vector
)
294 struct e1000_hw
*hw
= &adapter
->hw
;
297 switch (hw
->mac
.type
) {
299 /* The 82575 assigns vectors using a bitmask, which matches the
300 bitmask for the EICR/EIMS/EIMC registers. To assign one
301 or more queues to a vector, we write the appropriate bits
302 into the MSIXBM register for that vector. */
303 if (rx_queue
> IGB_N0_QUEUE
) {
304 msixbm
= E1000_EICR_RX_QUEUE0
<< rx_queue
;
305 adapter
->rx_ring
[rx_queue
].eims_value
= msixbm
;
307 if (tx_queue
> IGB_N0_QUEUE
) {
308 msixbm
|= E1000_EICR_TX_QUEUE0
<< tx_queue
;
309 adapter
->tx_ring
[tx_queue
].eims_value
=
310 E1000_EICR_TX_QUEUE0
<< tx_queue
;
312 array_wr32(E1000_MSIXBM(0), msix_vector
, msixbm
);
315 /* The 82576 uses a table-based method for assigning vectors.
316 Each queue has a single entry in the table to which we write
317 a vector number along with a "valid" bit. Sadly, the layout
318 of the table is somewhat counterintuitive. */
319 if (rx_queue
> IGB_N0_QUEUE
) {
320 index
= (rx_queue
& 0x7);
321 ivar
= array_rd32(E1000_IVAR0
, index
);
323 /* vector goes into low byte of register */
324 ivar
= ivar
& 0xFFFFFF00;
325 ivar
|= msix_vector
| E1000_IVAR_VALID
;
327 /* vector goes into third byte of register */
328 ivar
= ivar
& 0xFF00FFFF;
329 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 16;
331 adapter
->rx_ring
[rx_queue
].eims_value
= 1 << msix_vector
;
332 array_wr32(E1000_IVAR0
, index
, ivar
);
334 if (tx_queue
> IGB_N0_QUEUE
) {
335 index
= (tx_queue
& 0x7);
336 ivar
= array_rd32(E1000_IVAR0
, index
);
338 /* vector goes into second byte of register */
339 ivar
= ivar
& 0xFFFF00FF;
340 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 8;
342 /* vector goes into high byte of register */
343 ivar
= ivar
& 0x00FFFFFF;
344 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 24;
346 adapter
->tx_ring
[tx_queue
].eims_value
= 1 << msix_vector
;
347 array_wr32(E1000_IVAR0
, index
, ivar
);
357 * igb_configure_msix - Configure MSI-X hardware
359 * igb_configure_msix sets up the hardware to properly
360 * generate MSI-X interrupts.
362 static void igb_configure_msix(struct igb_adapter
*adapter
)
366 struct e1000_hw
*hw
= &adapter
->hw
;
368 adapter
->eims_enable_mask
= 0;
369 if (hw
->mac
.type
== e1000_82576
)
370 /* Turn on MSI-X capability first, or our settings
371 * won't stick. And it will take days to debug. */
372 wr32(E1000_GPIE
, E1000_GPIE_MSIX_MODE
|
373 E1000_GPIE_PBA
| E1000_GPIE_EIAME
|
376 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
377 struct igb_ring
*tx_ring
= &adapter
->tx_ring
[i
];
378 igb_assign_vector(adapter
, IGB_N0_QUEUE
, i
, vector
++);
379 adapter
->eims_enable_mask
|= tx_ring
->eims_value
;
380 if (tx_ring
->itr_val
)
381 writel(tx_ring
->itr_val
,
382 hw
->hw_addr
+ tx_ring
->itr_register
);
384 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
387 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
388 struct igb_ring
*rx_ring
= &adapter
->rx_ring
[i
];
389 rx_ring
->buddy
= NULL
;
390 igb_assign_vector(adapter
, i
, IGB_N0_QUEUE
, vector
++);
391 adapter
->eims_enable_mask
|= rx_ring
->eims_value
;
392 if (rx_ring
->itr_val
)
393 writel(rx_ring
->itr_val
,
394 hw
->hw_addr
+ rx_ring
->itr_register
);
396 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
400 /* set vector for other causes, i.e. link changes */
401 switch (hw
->mac
.type
) {
403 array_wr32(E1000_MSIXBM(0), vector
++,
406 tmp
= rd32(E1000_CTRL_EXT
);
407 /* enable MSI-X PBA support*/
408 tmp
|= E1000_CTRL_EXT_PBA_CLR
;
410 /* Auto-Mask interrupts upon ICR read. */
411 tmp
|= E1000_CTRL_EXT_EIAME
;
412 tmp
|= E1000_CTRL_EXT_IRCA
;
414 wr32(E1000_CTRL_EXT
, tmp
);
415 adapter
->eims_enable_mask
|= E1000_EIMS_OTHER
;
416 adapter
->eims_other
= E1000_EIMS_OTHER
;
421 tmp
= (vector
++ | E1000_IVAR_VALID
) << 8;
422 wr32(E1000_IVAR_MISC
, tmp
);
424 adapter
->eims_enable_mask
= (1 << (vector
)) - 1;
425 adapter
->eims_other
= 1 << (vector
- 1);
428 /* do nothing, since nothing else supports MSI-X */
430 } /* switch (hw->mac.type) */
435 * igb_request_msix - Initialize MSI-X interrupts
437 * igb_request_msix allocates MSI-X vectors and requests interrupts from the
440 static int igb_request_msix(struct igb_adapter
*adapter
)
442 struct net_device
*netdev
= adapter
->netdev
;
443 int i
, err
= 0, vector
= 0;
447 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
448 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
449 sprintf(ring
->name
, "%s-tx-%d", netdev
->name
, i
);
450 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
451 &igb_msix_tx
, 0, ring
->name
,
452 &(adapter
->tx_ring
[i
]));
455 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
456 ring
->itr_val
= 976; /* ~4000 ints/sec */
459 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
460 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
461 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
462 sprintf(ring
->name
, "%s-rx-%d", netdev
->name
, i
);
464 memcpy(ring
->name
, netdev
->name
, IFNAMSIZ
);
465 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
466 &igb_msix_rx
, 0, ring
->name
,
467 &(adapter
->rx_ring
[i
]));
470 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
471 ring
->itr_val
= adapter
->itr
;
472 /* overwrite the poll routine for MSIX, we've already done
474 ring
->napi
.poll
= &igb_clean_rx_ring_msix
;
478 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
479 &igb_msix_other
, 0, netdev
->name
, netdev
);
483 igb_configure_msix(adapter
);
489 static void igb_reset_interrupt_capability(struct igb_adapter
*adapter
)
491 if (adapter
->msix_entries
) {
492 pci_disable_msix(adapter
->pdev
);
493 kfree(adapter
->msix_entries
);
494 adapter
->msix_entries
= NULL
;
495 } else if (adapter
->flags
& IGB_FLAG_HAS_MSI
)
496 pci_disable_msi(adapter
->pdev
);
502 * igb_set_interrupt_capability - set MSI or MSI-X if supported
504 * Attempt to configure interrupts using the best available
505 * capabilities of the hardware and kernel.
507 static void igb_set_interrupt_capability(struct igb_adapter
*adapter
)
512 numvecs
= adapter
->num_tx_queues
+ adapter
->num_rx_queues
+ 1;
513 adapter
->msix_entries
= kcalloc(numvecs
, sizeof(struct msix_entry
),
515 if (!adapter
->msix_entries
)
518 for (i
= 0; i
< numvecs
; i
++)
519 adapter
->msix_entries
[i
].entry
= i
;
521 err
= pci_enable_msix(adapter
->pdev
,
522 adapter
->msix_entries
,
527 igb_reset_interrupt_capability(adapter
);
529 /* If we can't do MSI-X, try MSI */
531 adapter
->num_rx_queues
= 1;
532 adapter
->num_tx_queues
= 1;
533 if (!pci_enable_msi(adapter
->pdev
))
534 adapter
->flags
|= IGB_FLAG_HAS_MSI
;
536 /* Notify the stack of the (possibly) reduced Tx Queue count. */
537 adapter
->netdev
->real_num_tx_queues
= adapter
->num_tx_queues
;
542 * igb_request_irq - initialize interrupts
544 * Attempts to configure interrupts using the best available
545 * capabilities of the hardware and kernel.
547 static int igb_request_irq(struct igb_adapter
*adapter
)
549 struct net_device
*netdev
= adapter
->netdev
;
550 struct e1000_hw
*hw
= &adapter
->hw
;
553 if (adapter
->msix_entries
) {
554 err
= igb_request_msix(adapter
);
557 /* fall back to MSI */
558 igb_reset_interrupt_capability(adapter
);
559 if (!pci_enable_msi(adapter
->pdev
))
560 adapter
->flags
|= IGB_FLAG_HAS_MSI
;
561 igb_free_all_tx_resources(adapter
);
562 igb_free_all_rx_resources(adapter
);
563 adapter
->num_rx_queues
= 1;
564 igb_alloc_queues(adapter
);
566 switch (hw
->mac
.type
) {
568 wr32(E1000_MSIXBM(0),
569 (E1000_EICR_RX_QUEUE0
| E1000_EIMS_OTHER
));
572 wr32(E1000_IVAR0
, E1000_IVAR_VALID
);
579 if (adapter
->flags
& IGB_FLAG_HAS_MSI
) {
580 err
= request_irq(adapter
->pdev
->irq
, &igb_intr_msi
, 0,
581 netdev
->name
, netdev
);
584 /* fall back to legacy interrupts */
585 igb_reset_interrupt_capability(adapter
);
586 adapter
->flags
&= ~IGB_FLAG_HAS_MSI
;
589 err
= request_irq(adapter
->pdev
->irq
, &igb_intr
, IRQF_SHARED
,
590 netdev
->name
, netdev
);
593 dev_err(&adapter
->pdev
->dev
, "Error %d getting interrupt\n",
600 static void igb_free_irq(struct igb_adapter
*adapter
)
602 struct net_device
*netdev
= adapter
->netdev
;
604 if (adapter
->msix_entries
) {
607 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
608 free_irq(adapter
->msix_entries
[vector
++].vector
,
609 &(adapter
->tx_ring
[i
]));
610 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
611 free_irq(adapter
->msix_entries
[vector
++].vector
,
612 &(adapter
->rx_ring
[i
]));
614 free_irq(adapter
->msix_entries
[vector
++].vector
, netdev
);
618 free_irq(adapter
->pdev
->irq
, netdev
);
622 * igb_irq_disable - Mask off interrupt generation on the NIC
623 * @adapter: board private structure
625 static void igb_irq_disable(struct igb_adapter
*adapter
)
627 struct e1000_hw
*hw
= &adapter
->hw
;
629 if (adapter
->msix_entries
) {
631 wr32(E1000_EIMC
, ~0);
638 synchronize_irq(adapter
->pdev
->irq
);
642 * igb_irq_enable - Enable default interrupt generation settings
643 * @adapter: board private structure
645 static void igb_irq_enable(struct igb_adapter
*adapter
)
647 struct e1000_hw
*hw
= &adapter
->hw
;
649 if (adapter
->msix_entries
) {
650 wr32(E1000_EIAC
, adapter
->eims_enable_mask
);
651 wr32(E1000_EIAM
, adapter
->eims_enable_mask
);
652 wr32(E1000_EIMS
, adapter
->eims_enable_mask
);
653 wr32(E1000_IMS
, E1000_IMS_LSC
);
655 wr32(E1000_IMS
, IMS_ENABLE_MASK
);
656 wr32(E1000_IAM
, IMS_ENABLE_MASK
);
660 static void igb_update_mng_vlan(struct igb_adapter
*adapter
)
662 struct net_device
*netdev
= adapter
->netdev
;
663 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
664 u16 old_vid
= adapter
->mng_vlan_id
;
665 if (adapter
->vlgrp
) {
666 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
667 if (adapter
->hw
.mng_cookie
.status
&
668 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
669 igb_vlan_rx_add_vid(netdev
, vid
);
670 adapter
->mng_vlan_id
= vid
;
672 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
674 if ((old_vid
!= (u16
)IGB_MNG_VLAN_NONE
) &&
676 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
677 igb_vlan_rx_kill_vid(netdev
, old_vid
);
679 adapter
->mng_vlan_id
= vid
;
684 * igb_release_hw_control - release control of the h/w to f/w
685 * @adapter: address of board private structure
687 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
688 * For ASF and Pass Through versions of f/w this means that the
689 * driver is no longer loaded.
692 static void igb_release_hw_control(struct igb_adapter
*adapter
)
694 struct e1000_hw
*hw
= &adapter
->hw
;
697 /* Let firmware take over control of h/w */
698 ctrl_ext
= rd32(E1000_CTRL_EXT
);
700 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
705 * igb_get_hw_control - get control of the h/w from f/w
706 * @adapter: address of board private structure
708 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
709 * For ASF and Pass Through versions of f/w this means that
710 * the driver is loaded.
713 static void igb_get_hw_control(struct igb_adapter
*adapter
)
715 struct e1000_hw
*hw
= &adapter
->hw
;
718 /* Let firmware know the driver has taken over */
719 ctrl_ext
= rd32(E1000_CTRL_EXT
);
721 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
725 * igb_configure - configure the hardware for RX and TX
726 * @adapter: private board structure
728 static void igb_configure(struct igb_adapter
*adapter
)
730 struct net_device
*netdev
= adapter
->netdev
;
733 igb_get_hw_control(adapter
);
734 igb_set_multi(netdev
);
736 igb_restore_vlan(adapter
);
738 igb_configure_tx(adapter
);
739 igb_setup_rctl(adapter
);
740 igb_configure_rx(adapter
);
742 igb_rx_fifo_flush_82575(&adapter
->hw
);
744 /* call IGB_DESC_UNUSED which always leaves
745 * at least 1 descriptor unused to make sure
746 * next_to_use != next_to_clean */
747 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
748 struct igb_ring
*ring
= &adapter
->rx_ring
[i
];
749 igb_alloc_rx_buffers_adv(ring
, IGB_DESC_UNUSED(ring
));
753 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
758 * igb_up - Open the interface and prepare it to handle traffic
759 * @adapter: board private structure
762 int igb_up(struct igb_adapter
*adapter
)
764 struct e1000_hw
*hw
= &adapter
->hw
;
767 /* hardware has been reset, we need to reload some things */
768 igb_configure(adapter
);
770 clear_bit(__IGB_DOWN
, &adapter
->state
);
772 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
773 napi_enable(&adapter
->rx_ring
[i
].napi
);
774 if (adapter
->msix_entries
)
775 igb_configure_msix(adapter
);
777 /* Clear any pending interrupts. */
779 igb_irq_enable(adapter
);
781 /* Fire a link change interrupt to start the watchdog. */
782 wr32(E1000_ICS
, E1000_ICS_LSC
);
786 void igb_down(struct igb_adapter
*adapter
)
788 struct e1000_hw
*hw
= &adapter
->hw
;
789 struct net_device
*netdev
= adapter
->netdev
;
793 /* signal that we're down so the interrupt handler does not
794 * reschedule our watchdog timer */
795 set_bit(__IGB_DOWN
, &adapter
->state
);
797 /* disable receives in the hardware */
798 rctl
= rd32(E1000_RCTL
);
799 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
800 /* flush and sleep below */
802 netif_tx_stop_all_queues(netdev
);
804 /* disable transmits in the hardware */
805 tctl
= rd32(E1000_TCTL
);
806 tctl
&= ~E1000_TCTL_EN
;
807 wr32(E1000_TCTL
, tctl
);
808 /* flush both disables and wait for them to finish */
812 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
813 napi_disable(&adapter
->rx_ring
[i
].napi
);
815 igb_irq_disable(adapter
);
817 del_timer_sync(&adapter
->watchdog_timer
);
818 del_timer_sync(&adapter
->phy_info_timer
);
820 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
821 netif_carrier_off(netdev
);
822 adapter
->link_speed
= 0;
823 adapter
->link_duplex
= 0;
825 if (!pci_channel_offline(adapter
->pdev
))
827 igb_clean_all_tx_rings(adapter
);
828 igb_clean_all_rx_rings(adapter
);
831 void igb_reinit_locked(struct igb_adapter
*adapter
)
833 WARN_ON(in_interrupt());
834 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
838 clear_bit(__IGB_RESETTING
, &adapter
->state
);
841 void igb_reset(struct igb_adapter
*adapter
)
843 struct e1000_hw
*hw
= &adapter
->hw
;
844 struct e1000_mac_info
*mac
= &hw
->mac
;
845 struct e1000_fc_info
*fc
= &hw
->fc
;
846 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
849 /* Repartition Pba for greater than 9k mtu
850 * To take effect CTRL.RST is required.
852 if (mac
->type
!= e1000_82576
) {
859 if ((adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
860 (mac
->type
< e1000_82576
)) {
861 /* adjust PBA for jumbo frames */
862 wr32(E1000_PBA
, pba
);
864 /* To maintain wire speed transmits, the Tx FIFO should be
865 * large enough to accommodate two full transmit packets,
866 * rounded up to the next 1KB and expressed in KB. Likewise,
867 * the Rx FIFO should be large enough to accommodate at least
868 * one full receive packet and is similarly rounded up and
869 * expressed in KB. */
870 pba
= rd32(E1000_PBA
);
871 /* upper 16 bits has Tx packet buffer allocation size in KB */
872 tx_space
= pba
>> 16;
873 /* lower 16 bits has Rx packet buffer allocation size in KB */
875 /* the tx fifo also stores 16 bytes of information about the tx
876 * but don't include ethernet FCS because hardware appends it */
877 min_tx_space
= (adapter
->max_frame_size
+
878 sizeof(struct e1000_tx_desc
) -
880 min_tx_space
= ALIGN(min_tx_space
, 1024);
882 /* software strips receive CRC, so leave room for it */
883 min_rx_space
= adapter
->max_frame_size
;
884 min_rx_space
= ALIGN(min_rx_space
, 1024);
887 /* If current Tx allocation is less than the min Tx FIFO size,
888 * and the min Tx FIFO size is less than the current Rx FIFO
889 * allocation, take space away from current Rx allocation */
890 if (tx_space
< min_tx_space
&&
891 ((min_tx_space
- tx_space
) < pba
)) {
892 pba
= pba
- (min_tx_space
- tx_space
);
894 /* if short on rx space, rx wins and must trump tx
896 if (pba
< min_rx_space
)
899 wr32(E1000_PBA
, pba
);
902 /* flow control settings */
903 /* The high water mark must be low enough to fit one full frame
904 * (or the size used for early receive) above it in the Rx FIFO.
905 * Set it to the lower of:
906 * - 90% of the Rx FIFO size, or
907 * - the full Rx FIFO size minus one full frame */
908 hwm
= min(((pba
<< 10) * 9 / 10),
909 ((pba
<< 10) - 2 * adapter
->max_frame_size
));
911 if (mac
->type
< e1000_82576
) {
912 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
913 fc
->low_water
= fc
->high_water
- 8;
915 fc
->high_water
= hwm
& 0xFFF0; /* 16-byte granularity */
916 fc
->low_water
= fc
->high_water
- 16;
918 fc
->pause_time
= 0xFFFF;
920 fc
->type
= fc
->original_type
;
922 /* Allow time for pending master requests to run */
923 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
926 if (adapter
->hw
.mac
.ops
.init_hw(&adapter
->hw
))
927 dev_err(&adapter
->pdev
->dev
, "Hardware Error\n");
929 igb_update_mng_vlan(adapter
);
931 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
932 wr32(E1000_VET
, ETHERNET_IEEE_VLAN_TYPE
);
934 igb_reset_adaptive(&adapter
->hw
);
935 igb_get_phy_info(&adapter
->hw
);
939 * igb_is_need_ioport - determine if an adapter needs ioport resources or not
940 * @pdev: PCI device information struct
942 * Returns true if an adapter needs ioport resources
944 static int igb_is_need_ioport(struct pci_dev
*pdev
)
946 switch (pdev
->device
) {
947 /* Currently there are no adapters that need ioport resources */
953 static const struct net_device_ops igb_netdev_ops
= {
954 .ndo_open
= igb_open
,
955 .ndo_stop
= igb_close
,
956 .ndo_start_xmit
= igb_xmit_frame_adv
,
957 .ndo_get_stats
= igb_get_stats
,
958 .ndo_set_multicast_list
= igb_set_multi
,
959 .ndo_set_mac_address
= igb_set_mac
,
960 .ndo_change_mtu
= igb_change_mtu
,
961 .ndo_do_ioctl
= igb_ioctl
,
962 .ndo_tx_timeout
= igb_tx_timeout
,
963 .ndo_validate_addr
= eth_validate_addr
,
964 .ndo_vlan_rx_register
= igb_vlan_rx_register
,
965 .ndo_vlan_rx_add_vid
= igb_vlan_rx_add_vid
,
966 .ndo_vlan_rx_kill_vid
= igb_vlan_rx_kill_vid
,
967 #ifdef CONFIG_NET_POLL_CONTROLLER
968 .ndo_poll_controller
= igb_netpoll
,
973 * igb_probe - Device Initialization Routine
974 * @pdev: PCI device information struct
975 * @ent: entry in igb_pci_tbl
977 * Returns 0 on success, negative on failure
979 * igb_probe initializes an adapter identified by a pci_dev structure.
980 * The OS initialization, configuring of the adapter private structure,
981 * and a hardware reset occur.
983 static int __devinit
igb_probe(struct pci_dev
*pdev
,
984 const struct pci_device_id
*ent
)
986 struct net_device
*netdev
;
987 struct igb_adapter
*adapter
;
989 struct pci_dev
*us_dev
;
990 const struct e1000_info
*ei
= igb_info_tbl
[ent
->driver_data
];
991 unsigned long mmio_start
, mmio_len
;
992 int i
, err
, pci_using_dac
, pos
;
993 u16 eeprom_data
= 0, state
= 0;
994 u16 eeprom_apme_mask
= IGB_EEPROM_APME
;
996 int bars
, need_ioport
;
998 /* do not allocate ioport bars when not needed */
999 need_ioport
= igb_is_need_ioport(pdev
);
1001 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
1002 err
= pci_enable_device(pdev
);
1004 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
1005 err
= pci_enable_device_mem(pdev
);
1011 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
1013 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
1017 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
1019 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1021 dev_err(&pdev
->dev
, "No usable DMA "
1022 "configuration, aborting\n");
1028 /* 82575 requires that the pci-e link partner disable the L0s state */
1029 switch (pdev
->device
) {
1030 case E1000_DEV_ID_82575EB_COPPER
:
1031 case E1000_DEV_ID_82575EB_FIBER_SERDES
:
1032 case E1000_DEV_ID_82575GB_QUAD_COPPER
:
1033 us_dev
= pdev
->bus
->self
;
1034 pos
= pci_find_capability(us_dev
, PCI_CAP_ID_EXP
);
1036 pci_read_config_word(us_dev
, pos
+ PCI_EXP_LNKCTL
,
1038 state
&= ~PCIE_LINK_STATE_L0S
;
1039 pci_write_config_word(us_dev
, pos
+ PCI_EXP_LNKCTL
,
1041 dev_info(&pdev
->dev
,
1042 "Disabling ASPM L0s upstream switch port %s\n",
1049 err
= pci_request_selected_regions(pdev
, bars
, igb_driver_name
);
1053 pci_enable_pcie_error_reporting(pdev
);
1055 pci_set_master(pdev
);
1056 pci_save_state(pdev
);
1059 netdev
= alloc_etherdev_mq(sizeof(struct igb_adapter
), IGB_MAX_TX_QUEUES
);
1061 goto err_alloc_etherdev
;
1063 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
1065 pci_set_drvdata(pdev
, netdev
);
1066 adapter
= netdev_priv(netdev
);
1067 adapter
->netdev
= netdev
;
1068 adapter
->pdev
= pdev
;
1071 adapter
->msg_enable
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
1072 adapter
->bars
= bars
;
1073 adapter
->need_ioport
= need_ioport
;
1075 mmio_start
= pci_resource_start(pdev
, 0);
1076 mmio_len
= pci_resource_len(pdev
, 0);
1079 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
1080 if (!adapter
->hw
.hw_addr
)
1083 netdev
->netdev_ops
= &igb_netdev_ops
;
1084 igb_set_ethtool_ops(netdev
);
1085 netdev
->watchdog_timeo
= 5 * HZ
;
1087 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
1089 netdev
->mem_start
= mmio_start
;
1090 netdev
->mem_end
= mmio_start
+ mmio_len
;
1092 /* PCI config space info */
1093 hw
->vendor_id
= pdev
->vendor
;
1094 hw
->device_id
= pdev
->device
;
1095 hw
->revision_id
= pdev
->revision
;
1096 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1097 hw
->subsystem_device_id
= pdev
->subsystem_device
;
1099 /* setup the private structure */
1101 /* Copy the default MAC, PHY and NVM function pointers */
1102 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
1103 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
1104 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
1105 /* Initialize skew-specific constants */
1106 err
= ei
->get_invariants(hw
);
1110 err
= igb_sw_init(adapter
);
1114 igb_get_bus_info_pcie(hw
);
1117 switch (hw
->mac
.type
) {
1120 adapter
->flags
|= IGB_FLAG_HAS_DCA
;
1121 adapter
->flags
|= IGB_FLAG_NEED_CTX_IDX
;
1127 hw
->phy
.autoneg_wait_to_complete
= false;
1128 hw
->mac
.adaptive_ifs
= true;
1130 /* Copper options */
1131 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
1132 hw
->phy
.mdix
= AUTO_ALL_MODES
;
1133 hw
->phy
.disable_polarity_correction
= false;
1134 hw
->phy
.ms_type
= e1000_ms_hw_default
;
1137 if (igb_check_reset_block(hw
))
1138 dev_info(&pdev
->dev
,
1139 "PHY reset is blocked due to SOL/IDER session.\n");
1141 netdev
->features
= NETIF_F_SG
|
1143 NETIF_F_HW_VLAN_TX
|
1144 NETIF_F_HW_VLAN_RX
|
1145 NETIF_F_HW_VLAN_FILTER
;
1147 netdev
->features
|= NETIF_F_TSO
;
1148 netdev
->features
|= NETIF_F_TSO6
;
1150 #ifdef CONFIG_IGB_LRO
1151 netdev
->features
|= NETIF_F_LRO
;
1154 netdev
->vlan_features
|= NETIF_F_TSO
;
1155 netdev
->vlan_features
|= NETIF_F_TSO6
;
1156 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
1157 netdev
->vlan_features
|= NETIF_F_SG
;
1160 netdev
->features
|= NETIF_F_HIGHDMA
;
1162 netdev
->features
|= NETIF_F_LLTX
;
1163 adapter
->en_mng_pt
= igb_enable_mng_pass_thru(&adapter
->hw
);
1165 /* before reading the NVM, reset the controller to put the device in a
1166 * known good starting state */
1167 hw
->mac
.ops
.reset_hw(hw
);
1169 /* make sure the NVM is good */
1170 if (igb_validate_nvm_checksum(hw
) < 0) {
1171 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
1176 /* copy the MAC address out of the NVM */
1177 if (hw
->mac
.ops
.read_mac_addr(hw
))
1178 dev_err(&pdev
->dev
, "NVM Read Error\n");
1180 memcpy(netdev
->dev_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1181 memcpy(netdev
->perm_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1183 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1184 dev_err(&pdev
->dev
, "Invalid MAC Address\n");
1189 init_timer(&adapter
->watchdog_timer
);
1190 adapter
->watchdog_timer
.function
= &igb_watchdog
;
1191 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1193 init_timer(&adapter
->phy_info_timer
);
1194 adapter
->phy_info_timer
.function
= &igb_update_phy_info
;
1195 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
1197 INIT_WORK(&adapter
->reset_task
, igb_reset_task
);
1198 INIT_WORK(&adapter
->watchdog_task
, igb_watchdog_task
);
1200 /* Initialize link & ring properties that are user-changeable */
1201 adapter
->tx_ring
->count
= 256;
1202 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1203 adapter
->tx_ring
[i
].count
= adapter
->tx_ring
->count
;
1204 adapter
->rx_ring
->count
= 256;
1205 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1206 adapter
->rx_ring
[i
].count
= adapter
->rx_ring
->count
;
1208 adapter
->fc_autoneg
= true;
1209 hw
->mac
.autoneg
= true;
1210 hw
->phy
.autoneg_advertised
= 0x2f;
1212 hw
->fc
.original_type
= e1000_fc_default
;
1213 hw
->fc
.type
= e1000_fc_default
;
1215 adapter
->itr_setting
= 3;
1216 adapter
->itr
= IGB_START_ITR
;
1218 igb_validate_mdi_setting(hw
);
1220 adapter
->rx_csum
= 1;
1222 /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
1223 * enable the ACPI Magic Packet filter
1226 if (hw
->bus
.func
== 0 ||
1227 hw
->device_id
== E1000_DEV_ID_82575EB_COPPER
)
1228 hw
->nvm
.ops
.read_nvm(hw
, NVM_INIT_CONTROL3_PORT_A
, 1,
1231 if (eeprom_data
& eeprom_apme_mask
)
1232 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1234 /* now that we have the eeprom settings, apply the special cases where
1235 * the eeprom may be wrong or the board simply won't support wake on
1236 * lan on a particular port */
1237 switch (pdev
->device
) {
1238 case E1000_DEV_ID_82575GB_QUAD_COPPER
:
1239 adapter
->eeprom_wol
= 0;
1241 case E1000_DEV_ID_82575EB_FIBER_SERDES
:
1242 case E1000_DEV_ID_82576_FIBER
:
1243 case E1000_DEV_ID_82576_SERDES
:
1244 /* Wake events only supported on port A for dual fiber
1245 * regardless of eeprom setting */
1246 if (rd32(E1000_STATUS
) & E1000_STATUS_FUNC_1
)
1247 adapter
->eeprom_wol
= 0;
1251 /* initialize the wol settings based on the eeprom settings */
1252 adapter
->wol
= adapter
->eeprom_wol
;
1253 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
1255 /* reset the hardware with the new settings */
1258 /* let the f/w know that the h/w is now under the control of the
1260 igb_get_hw_control(adapter
);
1262 /* tell the stack to leave us alone until igb_open() is called */
1263 netif_carrier_off(netdev
);
1264 netif_tx_stop_all_queues(netdev
);
1266 strcpy(netdev
->name
, "eth%d");
1267 err
= register_netdev(netdev
);
1271 #ifdef CONFIG_IGB_DCA
1272 if ((adapter
->flags
& IGB_FLAG_HAS_DCA
) &&
1273 (dca_add_requester(&pdev
->dev
) == 0)) {
1274 adapter
->flags
|= IGB_FLAG_DCA_ENABLED
;
1275 dev_info(&pdev
->dev
, "DCA enabled\n");
1276 /* Always use CB2 mode, difference is masked
1277 * in the CB driver. */
1278 wr32(E1000_DCA_CTRL
, 2);
1279 igb_setup_dca(adapter
);
1283 dev_info(&pdev
->dev
, "Intel(R) Gigabit Ethernet Network Connection\n");
1284 /* print bus type/speed/width info */
1285 dev_info(&pdev
->dev
, "%s: (PCIe:%s:%s) %pM\n",
1287 ((hw
->bus
.speed
== e1000_bus_speed_2500
)
1288 ? "2.5Gb/s" : "unknown"),
1289 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
)
1290 ? "Width x4" : (hw
->bus
.width
== e1000_bus_width_pcie_x1
)
1291 ? "Width x1" : "unknown"),
1294 igb_read_part_num(hw
, &part_num
);
1295 dev_info(&pdev
->dev
, "%s: PBA No: %06x-%03x\n", netdev
->name
,
1296 (part_num
>> 8), (part_num
& 0xff));
1298 dev_info(&pdev
->dev
,
1299 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
1300 adapter
->msix_entries
? "MSI-X" :
1301 (adapter
->flags
& IGB_FLAG_HAS_MSI
) ? "MSI" : "legacy",
1302 adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1307 igb_release_hw_control(adapter
);
1309 if (!igb_check_reset_block(hw
))
1312 if (hw
->flash_address
)
1313 iounmap(hw
->flash_address
);
1315 igb_remove_device(hw
);
1316 igb_free_queues(adapter
);
1319 iounmap(hw
->hw_addr
);
1321 free_netdev(netdev
);
1323 pci_release_selected_regions(pdev
, bars
);
1326 pci_disable_device(pdev
);
1331 * igb_remove - Device Removal Routine
1332 * @pdev: PCI device information struct
1334 * igb_remove is called by the PCI subsystem to alert the driver
1335 * that it should release a PCI device. The could be caused by a
1336 * Hot-Plug event, or because the driver is going to be removed from
1339 static void __devexit
igb_remove(struct pci_dev
*pdev
)
1341 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1342 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1343 #ifdef CONFIG_IGB_DCA
1344 struct e1000_hw
*hw
= &adapter
->hw
;
1347 /* flush_scheduled work may reschedule our watchdog task, so
1348 * explicitly disable watchdog tasks from being rescheduled */
1349 set_bit(__IGB_DOWN
, &adapter
->state
);
1350 del_timer_sync(&adapter
->watchdog_timer
);
1351 del_timer_sync(&adapter
->phy_info_timer
);
1353 flush_scheduled_work();
1355 #ifdef CONFIG_IGB_DCA
1356 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
) {
1357 dev_info(&pdev
->dev
, "DCA disabled\n");
1358 dca_remove_requester(&pdev
->dev
);
1359 adapter
->flags
&= ~IGB_FLAG_DCA_ENABLED
;
1360 wr32(E1000_DCA_CTRL
, 1);
1364 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1365 * would have already happened in close and is redundant. */
1366 igb_release_hw_control(adapter
);
1368 unregister_netdev(netdev
);
1370 if (!igb_check_reset_block(&adapter
->hw
))
1371 igb_reset_phy(&adapter
->hw
);
1373 igb_remove_device(&adapter
->hw
);
1374 igb_reset_interrupt_capability(adapter
);
1376 igb_free_queues(adapter
);
1378 iounmap(adapter
->hw
.hw_addr
);
1379 if (adapter
->hw
.flash_address
)
1380 iounmap(adapter
->hw
.flash_address
);
1381 pci_release_selected_regions(pdev
, adapter
->bars
);
1383 free_netdev(netdev
);
1385 pci_disable_pcie_error_reporting(pdev
);
1387 pci_disable_device(pdev
);
1391 * igb_sw_init - Initialize general software structures (struct igb_adapter)
1392 * @adapter: board private structure to initialize
1394 * igb_sw_init initializes the Adapter private data structure.
1395 * Fields are initialized based on PCI device information and
1396 * OS network device settings (MTU size).
1398 static int __devinit
igb_sw_init(struct igb_adapter
*adapter
)
1400 struct e1000_hw
*hw
= &adapter
->hw
;
1401 struct net_device
*netdev
= adapter
->netdev
;
1402 struct pci_dev
*pdev
= adapter
->pdev
;
1404 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->bus
.pci_cmd_word
);
1406 adapter
->tx_ring_count
= IGB_DEFAULT_TXD
;
1407 adapter
->rx_ring_count
= IGB_DEFAULT_RXD
;
1408 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1409 adapter
->rx_ps_hdr_size
= 0; /* disable packet split */
1410 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1411 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
1413 /* Number of supported queues. */
1414 /* Having more queues than CPUs doesn't make sense. */
1415 adapter
->num_rx_queues
= min((u32
)IGB_MAX_RX_QUEUES
, (u32
)num_online_cpus());
1416 adapter
->num_tx_queues
= min(IGB_MAX_TX_QUEUES
, num_online_cpus());
1418 /* This call may decrease the number of queues depending on
1419 * interrupt mode. */
1420 igb_set_interrupt_capability(adapter
);
1422 if (igb_alloc_queues(adapter
)) {
1423 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
1427 /* Explicitly disable IRQ since the NIC can be in any state. */
1428 igb_irq_disable(adapter
);
1430 set_bit(__IGB_DOWN
, &adapter
->state
);
1435 * igb_open - Called when a network interface is made active
1436 * @netdev: network interface device structure
1438 * Returns 0 on success, negative value on failure
1440 * The open entry point is called when a network interface is made
1441 * active by the system (IFF_UP). At this point all resources needed
1442 * for transmit and receive operations are allocated, the interrupt
1443 * handler is registered with the OS, the watchdog timer is started,
1444 * and the stack is notified that the interface is ready.
1446 static int igb_open(struct net_device
*netdev
)
1448 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1449 struct e1000_hw
*hw
= &adapter
->hw
;
1453 /* disallow open during test */
1454 if (test_bit(__IGB_TESTING
, &adapter
->state
))
1457 /* allocate transmit descriptors */
1458 err
= igb_setup_all_tx_resources(adapter
);
1462 /* allocate receive descriptors */
1463 err
= igb_setup_all_rx_resources(adapter
);
1467 /* e1000_power_up_phy(adapter); */
1469 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
1470 if ((adapter
->hw
.mng_cookie
.status
&
1471 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
1472 igb_update_mng_vlan(adapter
);
1474 /* before we allocate an interrupt, we must be ready to handle it.
1475 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1476 * as soon as we call pci_request_irq, so we have to setup our
1477 * clean_rx handler before we do so. */
1478 igb_configure(adapter
);
1480 err
= igb_request_irq(adapter
);
1484 /* From here on the code is the same as igb_up() */
1485 clear_bit(__IGB_DOWN
, &adapter
->state
);
1487 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1488 napi_enable(&adapter
->rx_ring
[i
].napi
);
1490 /* Clear any pending interrupts. */
1493 igb_irq_enable(adapter
);
1495 netif_tx_start_all_queues(netdev
);
1497 /* Fire a link status change interrupt to start the watchdog. */
1498 wr32(E1000_ICS
, E1000_ICS_LSC
);
1503 igb_release_hw_control(adapter
);
1504 /* e1000_power_down_phy(adapter); */
1505 igb_free_all_rx_resources(adapter
);
1507 igb_free_all_tx_resources(adapter
);
1515 * igb_close - Disables a network interface
1516 * @netdev: network interface device structure
1518 * Returns 0, this is not allowed to fail
1520 * The close entry point is called when an interface is de-activated
1521 * by the OS. The hardware is still under the driver's control, but
1522 * needs to be disabled. A global MAC reset is issued to stop the
1523 * hardware, and all transmit and receive resources are freed.
1525 static int igb_close(struct net_device
*netdev
)
1527 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1529 WARN_ON(test_bit(__IGB_RESETTING
, &adapter
->state
));
1532 igb_free_irq(adapter
);
1534 igb_free_all_tx_resources(adapter
);
1535 igb_free_all_rx_resources(adapter
);
1537 /* kill manageability vlan ID if supported, but not if a vlan with
1538 * the same ID is registered on the host OS (let 8021q kill it) */
1539 if ((adapter
->hw
.mng_cookie
.status
&
1540 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1542 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
1543 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1549 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
1550 * @adapter: board private structure
1551 * @tx_ring: tx descriptor ring (for a specific queue) to setup
1553 * Return 0 on success, negative on failure
1556 int igb_setup_tx_resources(struct igb_adapter
*adapter
,
1557 struct igb_ring
*tx_ring
)
1559 struct pci_dev
*pdev
= adapter
->pdev
;
1562 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
1563 tx_ring
->buffer_info
= vmalloc(size
);
1564 if (!tx_ring
->buffer_info
)
1566 memset(tx_ring
->buffer_info
, 0, size
);
1568 /* round up to nearest 4K */
1569 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
)
1571 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1573 tx_ring
->desc
= pci_alloc_consistent(pdev
, tx_ring
->size
,
1579 tx_ring
->adapter
= adapter
;
1580 tx_ring
->next_to_use
= 0;
1581 tx_ring
->next_to_clean
= 0;
1585 vfree(tx_ring
->buffer_info
);
1586 dev_err(&adapter
->pdev
->dev
,
1587 "Unable to allocate memory for the transmit descriptor ring\n");
1592 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
1593 * (Descriptors) for all queues
1594 * @adapter: board private structure
1596 * Return 0 on success, negative on failure
1598 static int igb_setup_all_tx_resources(struct igb_adapter
*adapter
)
1603 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1604 err
= igb_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1606 dev_err(&adapter
->pdev
->dev
,
1607 "Allocation for Tx Queue %u failed\n", i
);
1608 for (i
--; i
>= 0; i
--)
1609 igb_free_tx_resources(&adapter
->tx_ring
[i
]);
1614 for (i
= 0; i
< IGB_MAX_TX_QUEUES
; i
++) {
1615 r_idx
= i
% adapter
->num_tx_queues
;
1616 adapter
->multi_tx_table
[i
] = &adapter
->tx_ring
[r_idx
];
1622 * igb_configure_tx - Configure transmit Unit after Reset
1623 * @adapter: board private structure
1625 * Configure the Tx unit of the MAC after a reset.
1627 static void igb_configure_tx(struct igb_adapter
*adapter
)
1630 struct e1000_hw
*hw
= &adapter
->hw
;
1635 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1636 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
1638 wr32(E1000_TDLEN(i
),
1639 ring
->count
* sizeof(struct e1000_tx_desc
));
1641 wr32(E1000_TDBAL(i
),
1642 tdba
& 0x00000000ffffffffULL
);
1643 wr32(E1000_TDBAH(i
), tdba
>> 32);
1645 tdwba
= ring
->dma
+ ring
->count
* sizeof(struct e1000_tx_desc
);
1646 tdwba
|= 1; /* enable head wb */
1647 wr32(E1000_TDWBAL(i
),
1648 tdwba
& 0x00000000ffffffffULL
);
1649 wr32(E1000_TDWBAH(i
), tdwba
>> 32);
1651 ring
->head
= E1000_TDH(i
);
1652 ring
->tail
= E1000_TDT(i
);
1653 writel(0, hw
->hw_addr
+ ring
->tail
);
1654 writel(0, hw
->hw_addr
+ ring
->head
);
1655 txdctl
= rd32(E1000_TXDCTL(i
));
1656 txdctl
|= E1000_TXDCTL_QUEUE_ENABLE
;
1657 wr32(E1000_TXDCTL(i
), txdctl
);
1659 /* Turn off Relaxed Ordering on head write-backs. The
1660 * writebacks MUST be delivered in order or it will
1661 * completely screw up our bookeeping.
1663 txctrl
= rd32(E1000_DCA_TXCTRL(i
));
1664 txctrl
&= ~E1000_DCA_TXCTRL_TX_WB_RO_EN
;
1665 wr32(E1000_DCA_TXCTRL(i
), txctrl
);
1670 /* Use the default values for the Tx Inter Packet Gap (IPG) timer */
1672 /* Program the Transmit Control Register */
1674 tctl
= rd32(E1000_TCTL
);
1675 tctl
&= ~E1000_TCTL_CT
;
1676 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1677 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1679 igb_config_collision_dist(hw
);
1681 /* Setup Transmit Descriptor Settings for eop descriptor */
1682 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_RS
;
1684 /* Enable transmits */
1685 tctl
|= E1000_TCTL_EN
;
1687 wr32(E1000_TCTL
, tctl
);
1691 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
1692 * @adapter: board private structure
1693 * @rx_ring: rx descriptor ring (for a specific queue) to setup
1695 * Returns 0 on success, negative on failure
1698 int igb_setup_rx_resources(struct igb_adapter
*adapter
,
1699 struct igb_ring
*rx_ring
)
1701 struct pci_dev
*pdev
= adapter
->pdev
;
1704 #ifdef CONFIG_IGB_LRO
1705 size
= sizeof(struct net_lro_desc
) * MAX_LRO_DESCRIPTORS
;
1706 rx_ring
->lro_mgr
.lro_arr
= vmalloc(size
);
1707 if (!rx_ring
->lro_mgr
.lro_arr
)
1709 memset(rx_ring
->lro_mgr
.lro_arr
, 0, size
);
1712 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
1713 rx_ring
->buffer_info
= vmalloc(size
);
1714 if (!rx_ring
->buffer_info
)
1716 memset(rx_ring
->buffer_info
, 0, size
);
1718 desc_len
= sizeof(union e1000_adv_rx_desc
);
1720 /* Round up to nearest 4K */
1721 rx_ring
->size
= rx_ring
->count
* desc_len
;
1722 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1724 rx_ring
->desc
= pci_alloc_consistent(pdev
, rx_ring
->size
,
1730 rx_ring
->next_to_clean
= 0;
1731 rx_ring
->next_to_use
= 0;
1733 rx_ring
->adapter
= adapter
;
1738 #ifdef CONFIG_IGB_LRO
1739 vfree(rx_ring
->lro_mgr
.lro_arr
);
1740 rx_ring
->lro_mgr
.lro_arr
= NULL
;
1742 vfree(rx_ring
->buffer_info
);
1743 dev_err(&adapter
->pdev
->dev
, "Unable to allocate memory for "
1744 "the receive descriptor ring\n");
1749 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
1750 * (Descriptors) for all queues
1751 * @adapter: board private structure
1753 * Return 0 on success, negative on failure
1755 static int igb_setup_all_rx_resources(struct igb_adapter
*adapter
)
1759 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1760 err
= igb_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1762 dev_err(&adapter
->pdev
->dev
,
1763 "Allocation for Rx Queue %u failed\n", i
);
1764 for (i
--; i
>= 0; i
--)
1765 igb_free_rx_resources(&adapter
->rx_ring
[i
]);
1774 * igb_setup_rctl - configure the receive control registers
1775 * @adapter: Board private structure
1777 static void igb_setup_rctl(struct igb_adapter
*adapter
)
1779 struct e1000_hw
*hw
= &adapter
->hw
;
1784 rctl
= rd32(E1000_RCTL
);
1786 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1787 rctl
&= ~(E1000_RCTL_LBM_TCVR
| E1000_RCTL_LBM_MAC
);
1789 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
| E1000_RCTL_RDMTS_HALF
|
1790 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1793 * enable stripping of CRC. It's unlikely this will break BMC
1794 * redirection as it did with e1000. Newer features require
1795 * that the HW strips the CRC.
1797 rctl
|= E1000_RCTL_SECRC
;
1800 * disable store bad packets, long packet enable, and clear size bits.
1802 rctl
&= ~(E1000_RCTL_SBP
| E1000_RCTL_LPE
| E1000_RCTL_SZ_256
);
1804 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
1805 rctl
|= E1000_RCTL_LPE
;
1807 /* Setup buffer sizes */
1808 switch (adapter
->rx_buffer_len
) {
1809 case IGB_RXBUFFER_256
:
1810 rctl
|= E1000_RCTL_SZ_256
;
1812 case IGB_RXBUFFER_512
:
1813 rctl
|= E1000_RCTL_SZ_512
;
1816 srrctl
= ALIGN(adapter
->rx_buffer_len
, 1024)
1817 >> E1000_SRRCTL_BSIZEPKT_SHIFT
;
1821 /* 82575 and greater support packet-split where the protocol
1822 * header is placed in skb->data and the packet data is
1823 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1824 * In the case of a non-split, skb->data is linearly filled,
1825 * followed by the page buffers. Therefore, skb->data is
1826 * sized to hold the largest protocol header.
1828 /* allocations using alloc_page take too long for regular MTU
1829 * so only enable packet split for jumbo frames */
1830 if (rctl
& E1000_RCTL_LPE
) {
1831 adapter
->rx_ps_hdr_size
= IGB_RXBUFFER_128
;
1832 srrctl
|= adapter
->rx_ps_hdr_size
<<
1833 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT
;
1834 srrctl
|= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
1836 adapter
->rx_ps_hdr_size
= 0;
1837 srrctl
|= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1840 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1841 wr32(E1000_SRRCTL(i
), srrctl
);
1843 wr32(E1000_RCTL
, rctl
);
1847 * igb_configure_rx - Configure receive Unit after Reset
1848 * @adapter: board private structure
1850 * Configure the Rx unit of the MAC after a reset.
1852 static void igb_configure_rx(struct igb_adapter
*adapter
)
1855 struct e1000_hw
*hw
= &adapter
->hw
;
1860 /* disable receives while setting up the descriptors */
1861 rctl
= rd32(E1000_RCTL
);
1862 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
1866 if (adapter
->itr_setting
> 3)
1867 wr32(E1000_ITR
, adapter
->itr
);
1869 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1870 * the Base and Length of the Rx Descriptor Ring */
1871 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1872 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
1874 wr32(E1000_RDBAL(i
),
1875 rdba
& 0x00000000ffffffffULL
);
1876 wr32(E1000_RDBAH(i
), rdba
>> 32);
1877 wr32(E1000_RDLEN(i
),
1878 ring
->count
* sizeof(union e1000_adv_rx_desc
));
1880 ring
->head
= E1000_RDH(i
);
1881 ring
->tail
= E1000_RDT(i
);
1882 writel(0, hw
->hw_addr
+ ring
->tail
);
1883 writel(0, hw
->hw_addr
+ ring
->head
);
1885 rxdctl
= rd32(E1000_RXDCTL(i
));
1886 rxdctl
|= E1000_RXDCTL_QUEUE_ENABLE
;
1887 rxdctl
&= 0xFFF00000;
1888 rxdctl
|= IGB_RX_PTHRESH
;
1889 rxdctl
|= IGB_RX_HTHRESH
<< 8;
1890 rxdctl
|= IGB_RX_WTHRESH
<< 16;
1891 wr32(E1000_RXDCTL(i
), rxdctl
);
1892 #ifdef CONFIG_IGB_LRO
1893 /* Intitial LRO Settings */
1894 ring
->lro_mgr
.max_aggr
= MAX_LRO_AGGR
;
1895 ring
->lro_mgr
.max_desc
= MAX_LRO_DESCRIPTORS
;
1896 ring
->lro_mgr
.get_skb_header
= igb_get_skb_hdr
;
1897 ring
->lro_mgr
.features
= LRO_F_NAPI
| LRO_F_EXTRACT_VLAN_ID
;
1898 ring
->lro_mgr
.dev
= adapter
->netdev
;
1899 ring
->lro_mgr
.ip_summed
= CHECKSUM_UNNECESSARY
;
1900 ring
->lro_mgr
.ip_summed_aggr
= CHECKSUM_UNNECESSARY
;
1904 if (adapter
->num_rx_queues
> 1) {
1913 get_random_bytes(&random
[0], 40);
1915 if (hw
->mac
.type
>= e1000_82576
)
1919 for (j
= 0; j
< (32 * 4); j
++) {
1921 (j
% adapter
->num_rx_queues
) << shift
;
1924 hw
->hw_addr
+ E1000_RETA(0) + (j
& ~3));
1926 mrqc
= E1000_MRQC_ENABLE_RSS_4Q
;
1928 /* Fill out hash function seeds */
1929 for (j
= 0; j
< 10; j
++)
1930 array_wr32(E1000_RSSRK(0), j
, random
[j
]);
1932 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1933 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1934 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6
|
1935 E1000_MRQC_RSS_FIELD_IPV6_TCP
);
1936 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4_UDP
|
1937 E1000_MRQC_RSS_FIELD_IPV6_UDP
);
1938 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX
|
1939 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
1942 wr32(E1000_MRQC
, mrqc
);
1944 /* Multiqueue and raw packet checksumming are mutually
1945 * exclusive. Note that this not the same as TCP/IP
1946 * checksumming, which works fine. */
1947 rxcsum
= rd32(E1000_RXCSUM
);
1948 rxcsum
|= E1000_RXCSUM_PCSD
;
1949 wr32(E1000_RXCSUM
, rxcsum
);
1951 /* Enable Receive Checksum Offload for TCP and UDP */
1952 rxcsum
= rd32(E1000_RXCSUM
);
1953 if (adapter
->rx_csum
) {
1954 rxcsum
|= E1000_RXCSUM_TUOFL
;
1956 /* Enable IPv4 payload checksum for UDP fragments
1957 * Must be used in conjunction with packet-split. */
1958 if (adapter
->rx_ps_hdr_size
)
1959 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1961 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1962 /* don't need to clear IPPCSE as it defaults to 0 */
1964 wr32(E1000_RXCSUM
, rxcsum
);
1969 adapter
->max_frame_size
+ VLAN_TAG_SIZE
);
1971 wr32(E1000_RLPML
, adapter
->max_frame_size
);
1973 /* Enable Receives */
1974 wr32(E1000_RCTL
, rctl
);
1978 * igb_free_tx_resources - Free Tx Resources per Queue
1979 * @tx_ring: Tx descriptor ring for a specific queue
1981 * Free all transmit software resources
1983 void igb_free_tx_resources(struct igb_ring
*tx_ring
)
1985 struct pci_dev
*pdev
= tx_ring
->adapter
->pdev
;
1987 igb_clean_tx_ring(tx_ring
);
1989 vfree(tx_ring
->buffer_info
);
1990 tx_ring
->buffer_info
= NULL
;
1992 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1994 tx_ring
->desc
= NULL
;
1998 * igb_free_all_tx_resources - Free Tx Resources for All Queues
1999 * @adapter: board private structure
2001 * Free all transmit software resources
2003 static void igb_free_all_tx_resources(struct igb_adapter
*adapter
)
2007 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2008 igb_free_tx_resources(&adapter
->tx_ring
[i
]);
2011 static void igb_unmap_and_free_tx_resource(struct igb_adapter
*adapter
,
2012 struct igb_buffer
*buffer_info
)
2014 if (buffer_info
->dma
) {
2015 pci_unmap_page(adapter
->pdev
,
2017 buffer_info
->length
,
2019 buffer_info
->dma
= 0;
2021 if (buffer_info
->skb
) {
2022 dev_kfree_skb_any(buffer_info
->skb
);
2023 buffer_info
->skb
= NULL
;
2025 buffer_info
->time_stamp
= 0;
2026 /* buffer_info must be completely set up in the transmit path */
2030 * igb_clean_tx_ring - Free Tx Buffers
2031 * @tx_ring: ring to be cleaned
2033 static void igb_clean_tx_ring(struct igb_ring
*tx_ring
)
2035 struct igb_adapter
*adapter
= tx_ring
->adapter
;
2036 struct igb_buffer
*buffer_info
;
2040 if (!tx_ring
->buffer_info
)
2042 /* Free all the Tx ring sk_buffs */
2044 for (i
= 0; i
< tx_ring
->count
; i
++) {
2045 buffer_info
= &tx_ring
->buffer_info
[i
];
2046 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
2049 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
2050 memset(tx_ring
->buffer_info
, 0, size
);
2052 /* Zero out the descriptor ring */
2054 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2056 tx_ring
->next_to_use
= 0;
2057 tx_ring
->next_to_clean
= 0;
2059 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2060 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2064 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
2065 * @adapter: board private structure
2067 static void igb_clean_all_tx_rings(struct igb_adapter
*adapter
)
2071 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2072 igb_clean_tx_ring(&adapter
->tx_ring
[i
]);
2076 * igb_free_rx_resources - Free Rx Resources
2077 * @rx_ring: ring to clean the resources from
2079 * Free all receive software resources
2081 void igb_free_rx_resources(struct igb_ring
*rx_ring
)
2083 struct pci_dev
*pdev
= rx_ring
->adapter
->pdev
;
2085 igb_clean_rx_ring(rx_ring
);
2087 vfree(rx_ring
->buffer_info
);
2088 rx_ring
->buffer_info
= NULL
;
2090 #ifdef CONFIG_IGB_LRO
2091 vfree(rx_ring
->lro_mgr
.lro_arr
);
2092 rx_ring
->lro_mgr
.lro_arr
= NULL
;
2095 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2097 rx_ring
->desc
= NULL
;
2101 * igb_free_all_rx_resources - Free Rx Resources for All Queues
2102 * @adapter: board private structure
2104 * Free all receive software resources
2106 static void igb_free_all_rx_resources(struct igb_adapter
*adapter
)
2110 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2111 igb_free_rx_resources(&adapter
->rx_ring
[i
]);
2115 * igb_clean_rx_ring - Free Rx Buffers per Queue
2116 * @rx_ring: ring to free buffers from
2118 static void igb_clean_rx_ring(struct igb_ring
*rx_ring
)
2120 struct igb_adapter
*adapter
= rx_ring
->adapter
;
2121 struct igb_buffer
*buffer_info
;
2122 struct pci_dev
*pdev
= adapter
->pdev
;
2126 if (!rx_ring
->buffer_info
)
2128 /* Free all the Rx ring sk_buffs */
2129 for (i
= 0; i
< rx_ring
->count
; i
++) {
2130 buffer_info
= &rx_ring
->buffer_info
[i
];
2131 if (buffer_info
->dma
) {
2132 if (adapter
->rx_ps_hdr_size
)
2133 pci_unmap_single(pdev
, buffer_info
->dma
,
2134 adapter
->rx_ps_hdr_size
,
2135 PCI_DMA_FROMDEVICE
);
2137 pci_unmap_single(pdev
, buffer_info
->dma
,
2138 adapter
->rx_buffer_len
,
2139 PCI_DMA_FROMDEVICE
);
2140 buffer_info
->dma
= 0;
2143 if (buffer_info
->skb
) {
2144 dev_kfree_skb(buffer_info
->skb
);
2145 buffer_info
->skb
= NULL
;
2147 if (buffer_info
->page
) {
2148 if (buffer_info
->page_dma
)
2149 pci_unmap_page(pdev
, buffer_info
->page_dma
,
2151 PCI_DMA_FROMDEVICE
);
2152 put_page(buffer_info
->page
);
2153 buffer_info
->page
= NULL
;
2154 buffer_info
->page_dma
= 0;
2155 buffer_info
->page_offset
= 0;
2159 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
2160 memset(rx_ring
->buffer_info
, 0, size
);
2162 /* Zero out the descriptor ring */
2163 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2165 rx_ring
->next_to_clean
= 0;
2166 rx_ring
->next_to_use
= 0;
2168 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
2169 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
2173 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
2174 * @adapter: board private structure
2176 static void igb_clean_all_rx_rings(struct igb_adapter
*adapter
)
2180 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2181 igb_clean_rx_ring(&adapter
->rx_ring
[i
]);
2185 * igb_set_mac - Change the Ethernet Address of the NIC
2186 * @netdev: network interface device structure
2187 * @p: pointer to an address structure
2189 * Returns 0 on success, negative on failure
2191 static int igb_set_mac(struct net_device
*netdev
, void *p
)
2193 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2194 struct sockaddr
*addr
= p
;
2196 if (!is_valid_ether_addr(addr
->sa_data
))
2197 return -EADDRNOTAVAIL
;
2199 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2200 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
2202 adapter
->hw
.mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
2208 * igb_set_multi - Multicast and Promiscuous mode set
2209 * @netdev: network interface device structure
2211 * The set_multi entry point is called whenever the multicast address
2212 * list or the network interface flags are updated. This routine is
2213 * responsible for configuring the hardware for proper multicast,
2214 * promiscuous mode, and all-multi behavior.
2216 static void igb_set_multi(struct net_device
*netdev
)
2218 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2219 struct e1000_hw
*hw
= &adapter
->hw
;
2220 struct e1000_mac_info
*mac
= &hw
->mac
;
2221 struct dev_mc_list
*mc_ptr
;
2226 /* Check for Promiscuous and All Multicast modes */
2228 rctl
= rd32(E1000_RCTL
);
2230 if (netdev
->flags
& IFF_PROMISC
) {
2231 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2232 rctl
&= ~E1000_RCTL_VFE
;
2234 if (netdev
->flags
& IFF_ALLMULTI
) {
2235 rctl
|= E1000_RCTL_MPE
;
2236 rctl
&= ~E1000_RCTL_UPE
;
2238 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2239 rctl
|= E1000_RCTL_VFE
;
2241 wr32(E1000_RCTL
, rctl
);
2243 if (!netdev
->mc_count
) {
2244 /* nothing to program, so clear mc list */
2245 igb_update_mc_addr_list_82575(hw
, NULL
, 0, 1,
2246 mac
->rar_entry_count
);
2250 mta_list
= kzalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2254 /* The shared function expects a packed array of only addresses. */
2255 mc_ptr
= netdev
->mc_list
;
2257 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2260 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
, ETH_ALEN
);
2261 mc_ptr
= mc_ptr
->next
;
2263 igb_update_mc_addr_list_82575(hw
, mta_list
, i
, 1,
2264 mac
->rar_entry_count
);
2268 /* Need to wait a few seconds after link up to get diagnostic information from
2270 static void igb_update_phy_info(unsigned long data
)
2272 struct igb_adapter
*adapter
= (struct igb_adapter
*) data
;
2273 igb_get_phy_info(&adapter
->hw
);
2277 * igb_watchdog - Timer Call-back
2278 * @data: pointer to adapter cast into an unsigned long
2280 static void igb_watchdog(unsigned long data
)
2282 struct igb_adapter
*adapter
= (struct igb_adapter
*)data
;
2283 /* Do the rest outside of interrupt context */
2284 schedule_work(&adapter
->watchdog_task
);
2287 static void igb_watchdog_task(struct work_struct
*work
)
2289 struct igb_adapter
*adapter
= container_of(work
,
2290 struct igb_adapter
, watchdog_task
);
2291 struct e1000_hw
*hw
= &adapter
->hw
;
2293 struct net_device
*netdev
= adapter
->netdev
;
2294 struct igb_ring
*tx_ring
= adapter
->tx_ring
;
2295 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2301 if ((netif_carrier_ok(netdev
)) &&
2302 (rd32(E1000_STATUS
) & E1000_STATUS_LU
))
2305 ret_val
= hw
->mac
.ops
.check_for_link(&adapter
->hw
);
2306 if ((ret_val
== E1000_ERR_PHY
) &&
2307 (hw
->phy
.type
== e1000_phy_igp_3
) &&
2309 E1000_PHY_CTRL_GBE_DISABLE
))
2310 dev_info(&adapter
->pdev
->dev
,
2311 "Gigabit has been disabled, downgrading speed\n");
2313 if ((hw
->phy
.media_type
== e1000_media_type_internal_serdes
) &&
2314 !(rd32(E1000_TXCW
) & E1000_TXCW_ANE
))
2315 link
= mac
->serdes_has_link
;
2317 link
= rd32(E1000_STATUS
) &
2321 if (!netif_carrier_ok(netdev
)) {
2323 hw
->mac
.ops
.get_speed_and_duplex(&adapter
->hw
,
2324 &adapter
->link_speed
,
2325 &adapter
->link_duplex
);
2327 ctrl
= rd32(E1000_CTRL
);
2328 /* Links status message must follow this format */
2329 printk(KERN_INFO
"igb: %s NIC Link is Up %d Mbps %s, "
2330 "Flow Control: %s\n",
2332 adapter
->link_speed
,
2333 adapter
->link_duplex
== FULL_DUPLEX
?
2334 "Full Duplex" : "Half Duplex",
2335 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2336 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2337 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2338 E1000_CTRL_TFCE
) ? "TX" : "None")));
2340 /* tweak tx_queue_len according to speed/duplex and
2341 * adjust the timeout factor */
2342 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2343 adapter
->tx_timeout_factor
= 1;
2344 switch (adapter
->link_speed
) {
2346 netdev
->tx_queue_len
= 10;
2347 adapter
->tx_timeout_factor
= 14;
2350 netdev
->tx_queue_len
= 100;
2351 /* maybe add some timeout factor ? */
2355 netif_carrier_on(netdev
);
2356 netif_tx_wake_all_queues(netdev
);
2358 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2359 mod_timer(&adapter
->phy_info_timer
,
2360 round_jiffies(jiffies
+ 2 * HZ
));
2363 if (netif_carrier_ok(netdev
)) {
2364 adapter
->link_speed
= 0;
2365 adapter
->link_duplex
= 0;
2366 /* Links status message must follow this format */
2367 printk(KERN_INFO
"igb: %s NIC Link is Down\n",
2369 netif_carrier_off(netdev
);
2370 netif_tx_stop_all_queues(netdev
);
2371 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2372 mod_timer(&adapter
->phy_info_timer
,
2373 round_jiffies(jiffies
+ 2 * HZ
));
2378 igb_update_stats(adapter
);
2380 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2381 adapter
->tpt_old
= adapter
->stats
.tpt
;
2382 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2383 adapter
->colc_old
= adapter
->stats
.colc
;
2385 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
2386 adapter
->gorc_old
= adapter
->stats
.gorc
;
2387 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
2388 adapter
->gotc_old
= adapter
->stats
.gotc
;
2390 igb_update_adaptive(&adapter
->hw
);
2392 if (!netif_carrier_ok(netdev
)) {
2393 if (IGB_DESC_UNUSED(tx_ring
) + 1 < tx_ring
->count
) {
2394 /* We've lost link, so the controller stops DMA,
2395 * but we've got queued Tx work that's never going
2396 * to get done, so reset controller to flush Tx.
2397 * (Do the reset outside of interrupt context). */
2398 adapter
->tx_timeout_count
++;
2399 schedule_work(&adapter
->reset_task
);
2403 /* Cause software interrupt to ensure rx ring is cleaned */
2404 if (adapter
->msix_entries
) {
2405 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2406 eics
|= adapter
->rx_ring
[i
].eims_value
;
2407 wr32(E1000_EICS
, eics
);
2409 wr32(E1000_ICS
, E1000_ICS_RXDMT0
);
2412 /* Force detection of hung controller every watchdog period */
2413 tx_ring
->detect_tx_hung
= true;
2415 /* Reset the timer */
2416 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2417 mod_timer(&adapter
->watchdog_timer
,
2418 round_jiffies(jiffies
+ 2 * HZ
));
2421 enum latency_range
{
2425 latency_invalid
= 255
2430 * igb_update_ring_itr - update the dynamic ITR value based on packet size
2432 * Stores a new ITR value based on strictly on packet size. This
2433 * algorithm is less sophisticated than that used in igb_update_itr,
2434 * due to the difficulty of synchronizing statistics across multiple
2435 * receive rings. The divisors and thresholds used by this fuction
2436 * were determined based on theoretical maximum wire speed and testing
2437 * data, in order to minimize response time while increasing bulk
2439 * This functionality is controlled by the InterruptThrottleRate module
2440 * parameter (see igb_param.c)
2441 * NOTE: This function is called only when operating in a multiqueue
2442 * receive environment.
2443 * @rx_ring: pointer to ring
2445 static void igb_update_ring_itr(struct igb_ring
*rx_ring
)
2447 int new_val
= rx_ring
->itr_val
;
2448 int avg_wire_size
= 0;
2449 struct igb_adapter
*adapter
= rx_ring
->adapter
;
2451 if (!rx_ring
->total_packets
)
2452 goto clear_counts
; /* no packets, so don't do anything */
2454 /* For non-gigabit speeds, just fix the interrupt rate at 4000
2455 * ints/sec - ITR timer value of 120 ticks.
2457 if (adapter
->link_speed
!= SPEED_1000
) {
2461 avg_wire_size
= rx_ring
->total_bytes
/ rx_ring
->total_packets
;
2463 /* Add 24 bytes to size to account for CRC, preamble, and gap */
2464 avg_wire_size
+= 24;
2466 /* Don't starve jumbo frames */
2467 avg_wire_size
= min(avg_wire_size
, 3000);
2469 /* Give a little boost to mid-size frames */
2470 if ((avg_wire_size
> 300) && (avg_wire_size
< 1200))
2471 new_val
= avg_wire_size
/ 3;
2473 new_val
= avg_wire_size
/ 2;
2476 if (new_val
!= rx_ring
->itr_val
) {
2477 rx_ring
->itr_val
= new_val
;
2478 rx_ring
->set_itr
= 1;
2481 rx_ring
->total_bytes
= 0;
2482 rx_ring
->total_packets
= 0;
2486 * igb_update_itr - update the dynamic ITR value based on statistics
2487 * Stores a new ITR value based on packets and byte
2488 * counts during the last interrupt. The advantage of per interrupt
2489 * computation is faster updates and more accurate ITR for the current
2490 * traffic pattern. Constants in this function were computed
2491 * based on theoretical maximum wire speed and thresholds were set based
2492 * on testing data as well as attempting to minimize response time
2493 * while increasing bulk throughput.
2494 * this functionality is controlled by the InterruptThrottleRate module
2495 * parameter (see igb_param.c)
2496 * NOTE: These calculations are only valid when operating in a single-
2497 * queue environment.
2498 * @adapter: pointer to adapter
2499 * @itr_setting: current adapter->itr
2500 * @packets: the number of packets during this measurement interval
2501 * @bytes: the number of bytes during this measurement interval
2503 static unsigned int igb_update_itr(struct igb_adapter
*adapter
, u16 itr_setting
,
2504 int packets
, int bytes
)
2506 unsigned int retval
= itr_setting
;
2509 goto update_itr_done
;
2511 switch (itr_setting
) {
2512 case lowest_latency
:
2513 /* handle TSO and jumbo frames */
2514 if (bytes
/packets
> 8000)
2515 retval
= bulk_latency
;
2516 else if ((packets
< 5) && (bytes
> 512))
2517 retval
= low_latency
;
2519 case low_latency
: /* 50 usec aka 20000 ints/s */
2520 if (bytes
> 10000) {
2521 /* this if handles the TSO accounting */
2522 if (bytes
/packets
> 8000) {
2523 retval
= bulk_latency
;
2524 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
2525 retval
= bulk_latency
;
2526 } else if ((packets
> 35)) {
2527 retval
= lowest_latency
;
2529 } else if (bytes
/packets
> 2000) {
2530 retval
= bulk_latency
;
2531 } else if (packets
<= 2 && bytes
< 512) {
2532 retval
= lowest_latency
;
2535 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2536 if (bytes
> 25000) {
2538 retval
= low_latency
;
2539 } else if (bytes
< 6000) {
2540 retval
= low_latency
;
2549 static void igb_set_itr(struct igb_adapter
*adapter
)
2552 u32 new_itr
= adapter
->itr
;
2554 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2555 if (adapter
->link_speed
!= SPEED_1000
) {
2561 adapter
->rx_itr
= igb_update_itr(adapter
,
2563 adapter
->rx_ring
->total_packets
,
2564 adapter
->rx_ring
->total_bytes
);
2566 if (adapter
->rx_ring
->buddy
) {
2567 adapter
->tx_itr
= igb_update_itr(adapter
,
2569 adapter
->tx_ring
->total_packets
,
2570 adapter
->tx_ring
->total_bytes
);
2572 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2574 current_itr
= adapter
->rx_itr
;
2577 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2578 if (adapter
->itr_setting
== 3 &&
2579 current_itr
== lowest_latency
)
2580 current_itr
= low_latency
;
2582 switch (current_itr
) {
2583 /* counts and packets in update_itr are dependent on these numbers */
2584 case lowest_latency
:
2588 new_itr
= 20000; /* aka hwitr = ~200 */
2598 adapter
->rx_ring
->total_bytes
= 0;
2599 adapter
->rx_ring
->total_packets
= 0;
2600 if (adapter
->rx_ring
->buddy
) {
2601 adapter
->rx_ring
->buddy
->total_bytes
= 0;
2602 adapter
->rx_ring
->buddy
->total_packets
= 0;
2605 if (new_itr
!= adapter
->itr
) {
2606 /* this attempts to bias the interrupt rate towards Bulk
2607 * by adding intermediate steps when interrupt rate is
2609 new_itr
= new_itr
> adapter
->itr
?
2610 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2612 /* Don't write the value here; it resets the adapter's
2613 * internal timer, and causes us to delay far longer than
2614 * we should between interrupts. Instead, we write the ITR
2615 * value at the beginning of the next interrupt so the timing
2616 * ends up being correct.
2618 adapter
->itr
= new_itr
;
2619 adapter
->rx_ring
->itr_val
= 1000000000 / (new_itr
* 256);
2620 adapter
->rx_ring
->set_itr
= 1;
2627 #define IGB_TX_FLAGS_CSUM 0x00000001
2628 #define IGB_TX_FLAGS_VLAN 0x00000002
2629 #define IGB_TX_FLAGS_TSO 0x00000004
2630 #define IGB_TX_FLAGS_IPV4 0x00000008
2631 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
2632 #define IGB_TX_FLAGS_VLAN_SHIFT 16
2634 static inline int igb_tso_adv(struct igb_adapter
*adapter
,
2635 struct igb_ring
*tx_ring
,
2636 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2638 struct e1000_adv_tx_context_desc
*context_desc
;
2641 struct igb_buffer
*buffer_info
;
2642 u32 info
= 0, tu_cmd
= 0;
2643 u32 mss_l4len_idx
, l4len
;
2646 if (skb_header_cloned(skb
)) {
2647 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2652 l4len
= tcp_hdrlen(skb
);
2655 if (skb
->protocol
== htons(ETH_P_IP
)) {
2656 struct iphdr
*iph
= ip_hdr(skb
);
2659 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2663 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
2664 ipv6_hdr(skb
)->payload_len
= 0;
2665 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2666 &ipv6_hdr(skb
)->daddr
,
2670 i
= tx_ring
->next_to_use
;
2672 buffer_info
= &tx_ring
->buffer_info
[i
];
2673 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2674 /* VLAN MACLEN IPLEN */
2675 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2676 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2677 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2678 *hdr_len
+= skb_network_offset(skb
);
2679 info
|= skb_network_header_len(skb
);
2680 *hdr_len
+= skb_network_header_len(skb
);
2681 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2683 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2684 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2686 if (skb
->protocol
== htons(ETH_P_IP
))
2687 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2688 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2690 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2693 mss_l4len_idx
= (skb_shinfo(skb
)->gso_size
<< E1000_ADVTXD_MSS_SHIFT
);
2694 mss_l4len_idx
|= (l4len
<< E1000_ADVTXD_L4LEN_SHIFT
);
2696 /* Context index must be unique per ring. */
2697 if (adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
)
2698 mss_l4len_idx
|= tx_ring
->queue_index
<< 4;
2700 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2701 context_desc
->seqnum_seed
= 0;
2703 buffer_info
->time_stamp
= jiffies
;
2704 buffer_info
->dma
= 0;
2706 if (i
== tx_ring
->count
)
2709 tx_ring
->next_to_use
= i
;
2714 static inline bool igb_tx_csum_adv(struct igb_adapter
*adapter
,
2715 struct igb_ring
*tx_ring
,
2716 struct sk_buff
*skb
, u32 tx_flags
)
2718 struct e1000_adv_tx_context_desc
*context_desc
;
2720 struct igb_buffer
*buffer_info
;
2721 u32 info
= 0, tu_cmd
= 0;
2723 if ((skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
2724 (tx_flags
& IGB_TX_FLAGS_VLAN
)) {
2725 i
= tx_ring
->next_to_use
;
2726 buffer_info
= &tx_ring
->buffer_info
[i
];
2727 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2729 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2730 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2731 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2732 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2733 info
|= skb_network_header_len(skb
);
2735 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2737 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2739 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2740 switch (skb
->protocol
) {
2741 case __constant_htons(ETH_P_IP
):
2742 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2743 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2744 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2746 case __constant_htons(ETH_P_IPV6
):
2747 /* XXX what about other V6 headers?? */
2748 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2749 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2752 if (unlikely(net_ratelimit()))
2753 dev_warn(&adapter
->pdev
->dev
,
2754 "partial checksum but proto=%x!\n",
2760 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2761 context_desc
->seqnum_seed
= 0;
2762 if (adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
)
2763 context_desc
->mss_l4len_idx
=
2764 cpu_to_le32(tx_ring
->queue_index
<< 4);
2766 buffer_info
->time_stamp
= jiffies
;
2767 buffer_info
->dma
= 0;
2770 if (i
== tx_ring
->count
)
2772 tx_ring
->next_to_use
= i
;
2781 #define IGB_MAX_TXD_PWR 16
2782 #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR)
2784 static inline int igb_tx_map_adv(struct igb_adapter
*adapter
,
2785 struct igb_ring
*tx_ring
,
2786 struct sk_buff
*skb
)
2788 struct igb_buffer
*buffer_info
;
2789 unsigned int len
= skb_headlen(skb
);
2790 unsigned int count
= 0, i
;
2793 i
= tx_ring
->next_to_use
;
2795 buffer_info
= &tx_ring
->buffer_info
[i
];
2796 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
2797 buffer_info
->length
= len
;
2798 /* set time_stamp *before* dma to help avoid a possible race */
2799 buffer_info
->time_stamp
= jiffies
;
2800 buffer_info
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, len
,
2804 if (i
== tx_ring
->count
)
2807 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++) {
2808 struct skb_frag_struct
*frag
;
2810 frag
= &skb_shinfo(skb
)->frags
[f
];
2813 buffer_info
= &tx_ring
->buffer_info
[i
];
2814 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
2815 buffer_info
->length
= len
;
2816 buffer_info
->time_stamp
= jiffies
;
2817 buffer_info
->dma
= pci_map_page(adapter
->pdev
,
2825 if (i
== tx_ring
->count
)
2829 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2830 tx_ring
->buffer_info
[i
].skb
= skb
;
2835 static inline void igb_tx_queue_adv(struct igb_adapter
*adapter
,
2836 struct igb_ring
*tx_ring
,
2837 int tx_flags
, int count
, u32 paylen
,
2840 union e1000_adv_tx_desc
*tx_desc
= NULL
;
2841 struct igb_buffer
*buffer_info
;
2842 u32 olinfo_status
= 0, cmd_type_len
;
2845 cmd_type_len
= (E1000_ADVTXD_DTYP_DATA
| E1000_ADVTXD_DCMD_IFCS
|
2846 E1000_ADVTXD_DCMD_DEXT
);
2848 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2849 cmd_type_len
|= E1000_ADVTXD_DCMD_VLE
;
2851 if (tx_flags
& IGB_TX_FLAGS_TSO
) {
2852 cmd_type_len
|= E1000_ADVTXD_DCMD_TSE
;
2854 /* insert tcp checksum */
2855 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2857 /* insert ip checksum */
2858 if (tx_flags
& IGB_TX_FLAGS_IPV4
)
2859 olinfo_status
|= E1000_TXD_POPTS_IXSM
<< 8;
2861 } else if (tx_flags
& IGB_TX_FLAGS_CSUM
) {
2862 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2865 if ((adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
) &&
2866 (tx_flags
& (IGB_TX_FLAGS_CSUM
| IGB_TX_FLAGS_TSO
|
2867 IGB_TX_FLAGS_VLAN
)))
2868 olinfo_status
|= tx_ring
->queue_index
<< 4;
2870 olinfo_status
|= ((paylen
- hdr_len
) << E1000_ADVTXD_PAYLEN_SHIFT
);
2872 i
= tx_ring
->next_to_use
;
2874 buffer_info
= &tx_ring
->buffer_info
[i
];
2875 tx_desc
= E1000_TX_DESC_ADV(*tx_ring
, i
);
2876 tx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2877 tx_desc
->read
.cmd_type_len
=
2878 cpu_to_le32(cmd_type_len
| buffer_info
->length
);
2879 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
2881 if (i
== tx_ring
->count
)
2885 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(adapter
->txd_cmd
);
2886 /* Force memory writes to complete before letting h/w
2887 * know there are new descriptors to fetch. (Only
2888 * applicable for weak-ordered memory model archs,
2889 * such as IA-64). */
2892 tx_ring
->next_to_use
= i
;
2893 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2894 /* we need this if more than one processor can write to our tail
2895 * at a time, it syncronizes IO on IA64/Altix systems */
2899 static int __igb_maybe_stop_tx(struct net_device
*netdev
,
2900 struct igb_ring
*tx_ring
, int size
)
2902 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2904 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
2906 /* Herbert's original patch had:
2907 * smp_mb__after_netif_stop_queue();
2908 * but since that doesn't exist yet, just open code it. */
2911 /* We need to check again in a case another CPU has just
2912 * made room available. */
2913 if (IGB_DESC_UNUSED(tx_ring
) < size
)
2917 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
2918 ++adapter
->restart_queue
;
2922 static int igb_maybe_stop_tx(struct net_device
*netdev
,
2923 struct igb_ring
*tx_ring
, int size
)
2925 if (IGB_DESC_UNUSED(tx_ring
) >= size
)
2927 return __igb_maybe_stop_tx(netdev
, tx_ring
, size
);
2930 #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1)
2932 static int igb_xmit_frame_ring_adv(struct sk_buff
*skb
,
2933 struct net_device
*netdev
,
2934 struct igb_ring
*tx_ring
)
2936 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2937 unsigned int tx_flags
= 0;
2942 len
= skb_headlen(skb
);
2944 if (test_bit(__IGB_DOWN
, &adapter
->state
)) {
2945 dev_kfree_skb_any(skb
);
2946 return NETDEV_TX_OK
;
2949 if (skb
->len
<= 0) {
2950 dev_kfree_skb_any(skb
);
2951 return NETDEV_TX_OK
;
2954 /* need: 1 descriptor per page,
2955 * + 2 desc gap to keep tail from touching head,
2956 * + 1 desc for skb->data,
2957 * + 1 desc for context descriptor,
2958 * otherwise try next time */
2959 if (igb_maybe_stop_tx(netdev
, tx_ring
, skb_shinfo(skb
)->nr_frags
+ 4)) {
2960 /* this is a hard error */
2961 return NETDEV_TX_BUSY
;
2965 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
2966 tx_flags
|= IGB_TX_FLAGS_VLAN
;
2967 tx_flags
|= (vlan_tx_tag_get(skb
) << IGB_TX_FLAGS_VLAN_SHIFT
);
2970 if (skb
->protocol
== htons(ETH_P_IP
))
2971 tx_flags
|= IGB_TX_FLAGS_IPV4
;
2973 tso
= skb_is_gso(skb
) ? igb_tso_adv(adapter
, tx_ring
, skb
, tx_flags
,
2977 dev_kfree_skb_any(skb
);
2978 return NETDEV_TX_OK
;
2982 tx_flags
|= IGB_TX_FLAGS_TSO
;
2983 else if (igb_tx_csum_adv(adapter
, tx_ring
, skb
, tx_flags
))
2984 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2985 tx_flags
|= IGB_TX_FLAGS_CSUM
;
2987 igb_tx_queue_adv(adapter
, tx_ring
, tx_flags
,
2988 igb_tx_map_adv(adapter
, tx_ring
, skb
),
2991 netdev
->trans_start
= jiffies
;
2993 /* Make sure there is space in the ring for the next send. */
2994 igb_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 4);
2996 return NETDEV_TX_OK
;
2999 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*netdev
)
3001 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3002 struct igb_ring
*tx_ring
;
3005 r_idx
= skb
->queue_mapping
& (IGB_MAX_TX_QUEUES
- 1);
3006 tx_ring
= adapter
->multi_tx_table
[r_idx
];
3008 /* This goes back to the question of how to logically map a tx queue
3009 * to a flow. Right now, performance is impacted slightly negatively
3010 * if using multiple tx queues. If the stack breaks away from a
3011 * single qdisc implementation, we can look at this again. */
3012 return (igb_xmit_frame_ring_adv(skb
, netdev
, tx_ring
));
3016 * igb_tx_timeout - Respond to a Tx Hang
3017 * @netdev: network interface device structure
3019 static void igb_tx_timeout(struct net_device
*netdev
)
3021 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3022 struct e1000_hw
*hw
= &adapter
->hw
;
3024 /* Do the reset outside of interrupt context */
3025 adapter
->tx_timeout_count
++;
3026 schedule_work(&adapter
->reset_task
);
3027 wr32(E1000_EICS
, adapter
->eims_enable_mask
&
3028 ~(E1000_EIMS_TCP_TIMER
| E1000_EIMS_OTHER
));
3031 static void igb_reset_task(struct work_struct
*work
)
3033 struct igb_adapter
*adapter
;
3034 adapter
= container_of(work
, struct igb_adapter
, reset_task
);
3036 igb_reinit_locked(adapter
);
3040 * igb_get_stats - Get System Network Statistics
3041 * @netdev: network interface device structure
3043 * Returns the address of the device statistics structure.
3044 * The statistics are actually updated from the timer callback.
3046 static struct net_device_stats
*
3047 igb_get_stats(struct net_device
*netdev
)
3049 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3051 /* only return the current stats */
3052 return &adapter
->net_stats
;
3056 * igb_change_mtu - Change the Maximum Transfer Unit
3057 * @netdev: network interface device structure
3058 * @new_mtu: new value for maximum frame size
3060 * Returns 0 on success, negative on failure
3062 static int igb_change_mtu(struct net_device
*netdev
, int new_mtu
)
3064 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3065 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3067 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
3068 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3069 dev_err(&adapter
->pdev
->dev
, "Invalid MTU setting\n");
3073 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3074 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3075 dev_err(&adapter
->pdev
->dev
, "MTU > 9216 not supported.\n");
3079 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
3081 /* igb_down has a dependency on max_frame_size */
3082 adapter
->max_frame_size
= max_frame
;
3083 if (netif_running(netdev
))
3086 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3087 * means we reserve 2 more, this pushes us to allocate from the next
3089 * i.e. RXBUFFER_2048 --> size-4096 slab
3092 if (max_frame
<= IGB_RXBUFFER_256
)
3093 adapter
->rx_buffer_len
= IGB_RXBUFFER_256
;
3094 else if (max_frame
<= IGB_RXBUFFER_512
)
3095 adapter
->rx_buffer_len
= IGB_RXBUFFER_512
;
3096 else if (max_frame
<= IGB_RXBUFFER_1024
)
3097 adapter
->rx_buffer_len
= IGB_RXBUFFER_1024
;
3098 else if (max_frame
<= IGB_RXBUFFER_2048
)
3099 adapter
->rx_buffer_len
= IGB_RXBUFFER_2048
;
3101 #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384
3102 adapter
->rx_buffer_len
= IGB_RXBUFFER_16384
;
3104 adapter
->rx_buffer_len
= PAGE_SIZE
/ 2;
3106 /* adjust allocation if LPE protects us, and we aren't using SBP */
3107 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
3108 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
))
3109 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3111 dev_info(&adapter
->pdev
->dev
, "changing MTU from %d to %d\n",
3112 netdev
->mtu
, new_mtu
);
3113 netdev
->mtu
= new_mtu
;
3115 if (netif_running(netdev
))
3120 clear_bit(__IGB_RESETTING
, &adapter
->state
);
3126 * igb_update_stats - Update the board statistics counters
3127 * @adapter: board private structure
3130 void igb_update_stats(struct igb_adapter
*adapter
)
3132 struct e1000_hw
*hw
= &adapter
->hw
;
3133 struct pci_dev
*pdev
= adapter
->pdev
;
3136 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3139 * Prevent stats update while adapter is being reset, or if the pci
3140 * connection is down.
3142 if (adapter
->link_speed
== 0)
3144 if (pci_channel_offline(pdev
))
3147 adapter
->stats
.crcerrs
+= rd32(E1000_CRCERRS
);
3148 adapter
->stats
.gprc
+= rd32(E1000_GPRC
);
3149 adapter
->stats
.gorc
+= rd32(E1000_GORCL
);
3150 rd32(E1000_GORCH
); /* clear GORCL */
3151 adapter
->stats
.bprc
+= rd32(E1000_BPRC
);
3152 adapter
->stats
.mprc
+= rd32(E1000_MPRC
);
3153 adapter
->stats
.roc
+= rd32(E1000_ROC
);
3155 adapter
->stats
.prc64
+= rd32(E1000_PRC64
);
3156 adapter
->stats
.prc127
+= rd32(E1000_PRC127
);
3157 adapter
->stats
.prc255
+= rd32(E1000_PRC255
);
3158 adapter
->stats
.prc511
+= rd32(E1000_PRC511
);
3159 adapter
->stats
.prc1023
+= rd32(E1000_PRC1023
);
3160 adapter
->stats
.prc1522
+= rd32(E1000_PRC1522
);
3161 adapter
->stats
.symerrs
+= rd32(E1000_SYMERRS
);
3162 adapter
->stats
.sec
+= rd32(E1000_SEC
);
3164 adapter
->stats
.mpc
+= rd32(E1000_MPC
);
3165 adapter
->stats
.scc
+= rd32(E1000_SCC
);
3166 adapter
->stats
.ecol
+= rd32(E1000_ECOL
);
3167 adapter
->stats
.mcc
+= rd32(E1000_MCC
);
3168 adapter
->stats
.latecol
+= rd32(E1000_LATECOL
);
3169 adapter
->stats
.dc
+= rd32(E1000_DC
);
3170 adapter
->stats
.rlec
+= rd32(E1000_RLEC
);
3171 adapter
->stats
.xonrxc
+= rd32(E1000_XONRXC
);
3172 adapter
->stats
.xontxc
+= rd32(E1000_XONTXC
);
3173 adapter
->stats
.xoffrxc
+= rd32(E1000_XOFFRXC
);
3174 adapter
->stats
.xofftxc
+= rd32(E1000_XOFFTXC
);
3175 adapter
->stats
.fcruc
+= rd32(E1000_FCRUC
);
3176 adapter
->stats
.gptc
+= rd32(E1000_GPTC
);
3177 adapter
->stats
.gotc
+= rd32(E1000_GOTCL
);
3178 rd32(E1000_GOTCH
); /* clear GOTCL */
3179 adapter
->stats
.rnbc
+= rd32(E1000_RNBC
);
3180 adapter
->stats
.ruc
+= rd32(E1000_RUC
);
3181 adapter
->stats
.rfc
+= rd32(E1000_RFC
);
3182 adapter
->stats
.rjc
+= rd32(E1000_RJC
);
3183 adapter
->stats
.tor
+= rd32(E1000_TORH
);
3184 adapter
->stats
.tot
+= rd32(E1000_TOTH
);
3185 adapter
->stats
.tpr
+= rd32(E1000_TPR
);
3187 adapter
->stats
.ptc64
+= rd32(E1000_PTC64
);
3188 adapter
->stats
.ptc127
+= rd32(E1000_PTC127
);
3189 adapter
->stats
.ptc255
+= rd32(E1000_PTC255
);
3190 adapter
->stats
.ptc511
+= rd32(E1000_PTC511
);
3191 adapter
->stats
.ptc1023
+= rd32(E1000_PTC1023
);
3192 adapter
->stats
.ptc1522
+= rd32(E1000_PTC1522
);
3194 adapter
->stats
.mptc
+= rd32(E1000_MPTC
);
3195 adapter
->stats
.bptc
+= rd32(E1000_BPTC
);
3197 /* used for adaptive IFS */
3199 hw
->mac
.tx_packet_delta
= rd32(E1000_TPT
);
3200 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3201 hw
->mac
.collision_delta
= rd32(E1000_COLC
);
3202 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3204 adapter
->stats
.algnerrc
+= rd32(E1000_ALGNERRC
);
3205 adapter
->stats
.rxerrc
+= rd32(E1000_RXERRC
);
3206 adapter
->stats
.tncrs
+= rd32(E1000_TNCRS
);
3207 adapter
->stats
.tsctc
+= rd32(E1000_TSCTC
);
3208 adapter
->stats
.tsctfc
+= rd32(E1000_TSCTFC
);
3210 adapter
->stats
.iac
+= rd32(E1000_IAC
);
3211 adapter
->stats
.icrxoc
+= rd32(E1000_ICRXOC
);
3212 adapter
->stats
.icrxptc
+= rd32(E1000_ICRXPTC
);
3213 adapter
->stats
.icrxatc
+= rd32(E1000_ICRXATC
);
3214 adapter
->stats
.ictxptc
+= rd32(E1000_ICTXPTC
);
3215 adapter
->stats
.ictxatc
+= rd32(E1000_ICTXATC
);
3216 adapter
->stats
.ictxqec
+= rd32(E1000_ICTXQEC
);
3217 adapter
->stats
.ictxqmtc
+= rd32(E1000_ICTXQMTC
);
3218 adapter
->stats
.icrxdmtc
+= rd32(E1000_ICRXDMTC
);
3220 /* Fill out the OS statistics structure */
3221 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3222 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3226 /* RLEC on some newer hardware can be incorrect so build
3227 * our own version based on RUC and ROC */
3228 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3229 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3230 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3231 adapter
->stats
.cexterr
;
3232 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3234 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3235 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3236 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3239 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3240 adapter
->stats
.latecol
;
3241 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3242 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3243 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3245 /* Tx Dropped needs to be maintained elsewhere */
3248 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
3249 if ((adapter
->link_speed
== SPEED_1000
) &&
3250 (!igb_read_phy_reg(hw
, PHY_1000T_STATUS
,
3252 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3253 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3257 /* Management Stats */
3258 adapter
->stats
.mgptc
+= rd32(E1000_MGTPTC
);
3259 adapter
->stats
.mgprc
+= rd32(E1000_MGTPRC
);
3260 adapter
->stats
.mgpdc
+= rd32(E1000_MGTPDC
);
3264 static irqreturn_t
igb_msix_other(int irq
, void *data
)
3266 struct net_device
*netdev
= data
;
3267 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3268 struct e1000_hw
*hw
= &adapter
->hw
;
3269 u32 icr
= rd32(E1000_ICR
);
3271 /* reading ICR causes bit 31 of EICR to be cleared */
3272 if (!(icr
& E1000_ICR_LSC
))
3273 goto no_link_interrupt
;
3274 hw
->mac
.get_link_status
= 1;
3275 /* guard against interrupt when we're going down */
3276 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3277 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3280 wr32(E1000_IMS
, E1000_IMS_LSC
);
3281 wr32(E1000_EIMS
, adapter
->eims_other
);
3286 static irqreturn_t
igb_msix_tx(int irq
, void *data
)
3288 struct igb_ring
*tx_ring
= data
;
3289 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3290 struct e1000_hw
*hw
= &adapter
->hw
;
3292 #ifdef CONFIG_IGB_DCA
3293 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3294 igb_update_tx_dca(tx_ring
);
3296 tx_ring
->total_bytes
= 0;
3297 tx_ring
->total_packets
= 0;
3299 /* auto mask will automatically reenable the interrupt when we write
3301 if (!igb_clean_tx_irq(tx_ring
))
3302 /* Ring was not completely cleaned, so fire another interrupt */
3303 wr32(E1000_EICS
, tx_ring
->eims_value
);
3305 wr32(E1000_EIMS
, tx_ring
->eims_value
);
3310 static void igb_write_itr(struct igb_ring
*ring
)
3312 struct e1000_hw
*hw
= &ring
->adapter
->hw
;
3313 if ((ring
->adapter
->itr_setting
& 3) && ring
->set_itr
) {
3314 switch (hw
->mac
.type
) {
3316 wr32(ring
->itr_register
,
3321 wr32(ring
->itr_register
,
3323 (ring
->itr_val
<< 16));
3330 static irqreturn_t
igb_msix_rx(int irq
, void *data
)
3332 struct igb_ring
*rx_ring
= data
;
3333 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3335 /* Write the ITR value calculated at the end of the
3336 * previous interrupt.
3339 igb_write_itr(rx_ring
);
3341 if (netif_rx_schedule_prep(adapter
->netdev
, &rx_ring
->napi
))
3342 __netif_rx_schedule(adapter
->netdev
, &rx_ring
->napi
);
3344 #ifdef CONFIG_IGB_DCA
3345 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3346 igb_update_rx_dca(rx_ring
);
3351 #ifdef CONFIG_IGB_DCA
3352 static void igb_update_rx_dca(struct igb_ring
*rx_ring
)
3355 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3356 struct e1000_hw
*hw
= &adapter
->hw
;
3357 int cpu
= get_cpu();
3358 int q
= rx_ring
- adapter
->rx_ring
;
3360 if (rx_ring
->cpu
!= cpu
) {
3361 dca_rxctrl
= rd32(E1000_DCA_RXCTRL(q
));
3362 if (hw
->mac
.type
== e1000_82576
) {
3363 dca_rxctrl
&= ~E1000_DCA_RXCTRL_CPUID_MASK_82576
;
3364 dca_rxctrl
|= dca_get_tag(cpu
) <<
3365 E1000_DCA_RXCTRL_CPUID_SHIFT
;
3367 dca_rxctrl
&= ~E1000_DCA_RXCTRL_CPUID_MASK
;
3368 dca_rxctrl
|= dca_get_tag(cpu
);
3370 dca_rxctrl
|= E1000_DCA_RXCTRL_DESC_DCA_EN
;
3371 dca_rxctrl
|= E1000_DCA_RXCTRL_HEAD_DCA_EN
;
3372 dca_rxctrl
|= E1000_DCA_RXCTRL_DATA_DCA_EN
;
3373 wr32(E1000_DCA_RXCTRL(q
), dca_rxctrl
);
3379 static void igb_update_tx_dca(struct igb_ring
*tx_ring
)
3382 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3383 struct e1000_hw
*hw
= &adapter
->hw
;
3384 int cpu
= get_cpu();
3385 int q
= tx_ring
- adapter
->tx_ring
;
3387 if (tx_ring
->cpu
!= cpu
) {
3388 dca_txctrl
= rd32(E1000_DCA_TXCTRL(q
));
3389 if (hw
->mac
.type
== e1000_82576
) {
3390 dca_txctrl
&= ~E1000_DCA_TXCTRL_CPUID_MASK_82576
;
3391 dca_txctrl
|= dca_get_tag(cpu
) <<
3392 E1000_DCA_TXCTRL_CPUID_SHIFT
;
3394 dca_txctrl
&= ~E1000_DCA_TXCTRL_CPUID_MASK
;
3395 dca_txctrl
|= dca_get_tag(cpu
);
3397 dca_txctrl
|= E1000_DCA_TXCTRL_DESC_DCA_EN
;
3398 wr32(E1000_DCA_TXCTRL(q
), dca_txctrl
);
3404 static void igb_setup_dca(struct igb_adapter
*adapter
)
3408 if (!(adapter
->flags
& IGB_FLAG_DCA_ENABLED
))
3411 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3412 adapter
->tx_ring
[i
].cpu
= -1;
3413 igb_update_tx_dca(&adapter
->tx_ring
[i
]);
3415 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3416 adapter
->rx_ring
[i
].cpu
= -1;
3417 igb_update_rx_dca(&adapter
->rx_ring
[i
]);
3421 static int __igb_notify_dca(struct device
*dev
, void *data
)
3423 struct net_device
*netdev
= dev_get_drvdata(dev
);
3424 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3425 struct e1000_hw
*hw
= &adapter
->hw
;
3426 unsigned long event
= *(unsigned long *)data
;
3428 if (!(adapter
->flags
& IGB_FLAG_HAS_DCA
))
3432 case DCA_PROVIDER_ADD
:
3433 /* if already enabled, don't do it again */
3434 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3436 adapter
->flags
|= IGB_FLAG_DCA_ENABLED
;
3437 /* Always use CB2 mode, difference is masked
3438 * in the CB driver. */
3439 wr32(E1000_DCA_CTRL
, 2);
3440 if (dca_add_requester(dev
) == 0) {
3441 dev_info(&adapter
->pdev
->dev
, "DCA enabled\n");
3442 igb_setup_dca(adapter
);
3445 /* Fall Through since DCA is disabled. */
3446 case DCA_PROVIDER_REMOVE
:
3447 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
) {
3448 /* without this a class_device is left
3449 * hanging around in the sysfs model */
3450 dca_remove_requester(dev
);
3451 dev_info(&adapter
->pdev
->dev
, "DCA disabled\n");
3452 adapter
->flags
&= ~IGB_FLAG_DCA_ENABLED
;
3453 wr32(E1000_DCA_CTRL
, 1);
3461 static int igb_notify_dca(struct notifier_block
*nb
, unsigned long event
,
3466 ret_val
= driver_for_each_device(&igb_driver
.driver
, NULL
, &event
,
3469 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
3471 #endif /* CONFIG_IGB_DCA */
3474 * igb_intr_msi - Interrupt Handler
3475 * @irq: interrupt number
3476 * @data: pointer to a network interface device structure
3478 static irqreturn_t
igb_intr_msi(int irq
, void *data
)
3480 struct net_device
*netdev
= data
;
3481 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3482 struct e1000_hw
*hw
= &adapter
->hw
;
3483 /* read ICR disables interrupts using IAM */
3484 u32 icr
= rd32(E1000_ICR
);
3486 igb_write_itr(adapter
->rx_ring
);
3488 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3489 hw
->mac
.get_link_status
= 1;
3490 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3491 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3494 netif_rx_schedule(netdev
, &adapter
->rx_ring
[0].napi
);
3500 * igb_intr - Interrupt Handler
3501 * @irq: interrupt number
3502 * @data: pointer to a network interface device structure
3504 static irqreturn_t
igb_intr(int irq
, void *data
)
3506 struct net_device
*netdev
= data
;
3507 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3508 struct e1000_hw
*hw
= &adapter
->hw
;
3509 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3510 * need for the IMC write */
3511 u32 icr
= rd32(E1000_ICR
);
3514 return IRQ_NONE
; /* Not our interrupt */
3516 igb_write_itr(adapter
->rx_ring
);
3518 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3519 * not set, then the adapter didn't send an interrupt */
3520 if (!(icr
& E1000_ICR_INT_ASSERTED
))
3523 eicr
= rd32(E1000_EICR
);
3525 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3526 hw
->mac
.get_link_status
= 1;
3527 /* guard against interrupt when we're going down */
3528 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3529 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3532 netif_rx_schedule(netdev
, &adapter
->rx_ring
[0].napi
);
3538 * igb_poll - NAPI Rx polling callback
3539 * @napi: napi polling structure
3540 * @budget: count of how many packets we should handle
3542 static int igb_poll(struct napi_struct
*napi
, int budget
)
3544 struct igb_ring
*rx_ring
= container_of(napi
, struct igb_ring
, napi
);
3545 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3546 struct net_device
*netdev
= adapter
->netdev
;
3547 int tx_clean_complete
, work_done
= 0;
3549 /* this poll routine only supports one tx and one rx queue */
3550 #ifdef CONFIG_IGB_DCA
3551 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3552 igb_update_tx_dca(&adapter
->tx_ring
[0]);
3554 tx_clean_complete
= igb_clean_tx_irq(&adapter
->tx_ring
[0]);
3556 #ifdef CONFIG_IGB_DCA
3557 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3558 igb_update_rx_dca(&adapter
->rx_ring
[0]);
3560 igb_clean_rx_irq_adv(&adapter
->rx_ring
[0], &work_done
, budget
);
3562 /* If no Tx and not enough Rx work done, exit the polling mode */
3563 if ((tx_clean_complete
&& (work_done
< budget
)) ||
3564 !netif_running(netdev
)) {
3565 if (adapter
->itr_setting
& 3)
3566 igb_set_itr(adapter
);
3567 netif_rx_complete(netdev
, napi
);
3568 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3569 igb_irq_enable(adapter
);
3576 static int igb_clean_rx_ring_msix(struct napi_struct
*napi
, int budget
)
3578 struct igb_ring
*rx_ring
= container_of(napi
, struct igb_ring
, napi
);
3579 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3580 struct e1000_hw
*hw
= &adapter
->hw
;
3581 struct net_device
*netdev
= adapter
->netdev
;
3584 #ifdef CONFIG_IGB_DCA
3585 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3586 igb_update_rx_dca(rx_ring
);
3588 igb_clean_rx_irq_adv(rx_ring
, &work_done
, budget
);
3591 /* If not enough Rx work done, exit the polling mode */
3592 if ((work_done
== 0) || !netif_running(netdev
)) {
3593 netif_rx_complete(netdev
, napi
);
3595 if (adapter
->itr_setting
& 3) {
3596 if (adapter
->num_rx_queues
== 1)
3597 igb_set_itr(adapter
);
3599 igb_update_ring_itr(rx_ring
);
3602 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3603 wr32(E1000_EIMS
, rx_ring
->eims_value
);
3611 static inline u32
get_head(struct igb_ring
*tx_ring
)
3613 void *end
= (struct e1000_tx_desc
*)tx_ring
->desc
+ tx_ring
->count
;
3614 return le32_to_cpu(*(volatile __le32
*)end
);
3618 * igb_clean_tx_irq - Reclaim resources after transmit completes
3619 * @adapter: board private structure
3620 * returns true if ring is completely cleaned
3622 static bool igb_clean_tx_irq(struct igb_ring
*tx_ring
)
3624 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3625 struct e1000_hw
*hw
= &adapter
->hw
;
3626 struct net_device
*netdev
= adapter
->netdev
;
3627 struct e1000_tx_desc
*tx_desc
;
3628 struct igb_buffer
*buffer_info
;
3629 struct sk_buff
*skb
;
3632 unsigned int count
= 0;
3633 unsigned int total_bytes
= 0, total_packets
= 0;
3637 head
= get_head(tx_ring
);
3638 i
= tx_ring
->next_to_clean
;
3641 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3642 buffer_info
= &tx_ring
->buffer_info
[i
];
3643 skb
= buffer_info
->skb
;
3646 unsigned int segs
, bytecount
;
3647 /* gso_segs is currently only valid for tcp */
3648 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3649 /* multiply data chunks by size of headers */
3650 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3652 total_packets
+= segs
;
3653 total_bytes
+= bytecount
;
3656 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
3659 if (i
== tx_ring
->count
)
3663 if (count
== IGB_MAX_TX_CLEAN
) {
3670 head
= get_head(tx_ring
);
3671 if (head
== oldhead
)
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 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3703 /* detected Tx unit hang */
3704 dev_err(&adapter
->pdev
->dev
,
3705 "Detected Tx Unit Hang\n"
3709 " next_to_use <%x>\n"
3710 " next_to_clean <%x>\n"
3712 "buffer_info[next_to_clean]\n"
3713 " time_stamp <%lx>\n"
3715 " desc.status <%x>\n",
3716 tx_ring
->queue_index
,
3717 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
3718 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
3719 tx_ring
->next_to_use
,
3720 tx_ring
->next_to_clean
,
3722 tx_ring
->buffer_info
[i
].time_stamp
,
3724 tx_desc
->upper
.fields
.status
);
3725 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
3728 tx_ring
->total_bytes
+= total_bytes
;
3729 tx_ring
->total_packets
+= total_packets
;
3730 tx_ring
->tx_stats
.bytes
+= total_bytes
;
3731 tx_ring
->tx_stats
.packets
+= total_packets
;
3732 adapter
->net_stats
.tx_bytes
+= total_bytes
;
3733 adapter
->net_stats
.tx_packets
+= total_packets
;
3737 #ifdef CONFIG_IGB_LRO
3739 * igb_get_skb_hdr - helper function for LRO header processing
3740 * @skb: pointer to sk_buff to be added to LRO packet
3741 * @iphdr: pointer to ip header structure
3742 * @tcph: pointer to tcp header structure
3743 * @hdr_flags: pointer to header flags
3744 * @priv: pointer to the receive descriptor for the current sk_buff
3746 static int igb_get_skb_hdr(struct sk_buff
*skb
, void **iphdr
, void **tcph
,
3747 u64
*hdr_flags
, void *priv
)
3749 union e1000_adv_rx_desc
*rx_desc
= priv
;
3750 u16 pkt_type
= rx_desc
->wb
.lower
.lo_dword
.pkt_info
&
3751 (E1000_RXDADV_PKTTYPE_IPV4
| E1000_RXDADV_PKTTYPE_TCP
);
3753 /* Verify that this is a valid IPv4 TCP packet */
3754 if (pkt_type
!= (E1000_RXDADV_PKTTYPE_IPV4
|
3755 E1000_RXDADV_PKTTYPE_TCP
))
3758 /* Set network headers */
3759 skb_reset_network_header(skb
);
3760 skb_set_transport_header(skb
, ip_hdrlen(skb
));
3761 *iphdr
= ip_hdr(skb
);
3762 *tcph
= tcp_hdr(skb
);
3763 *hdr_flags
= LRO_IPV4
| LRO_TCP
;
3768 #endif /* CONFIG_IGB_LRO */
3771 * igb_receive_skb - helper function to handle rx indications
3772 * @ring: pointer to receive ring receving this packet
3773 * @status: descriptor status field as written by hardware
3774 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
3775 * @skb: pointer to sk_buff to be indicated to stack
3777 static void igb_receive_skb(struct igb_ring
*ring
, u8 status
,
3778 union e1000_adv_rx_desc
* rx_desc
,
3779 struct sk_buff
*skb
)
3781 struct igb_adapter
* adapter
= ring
->adapter
;
3782 bool vlan_extracted
= (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
));
3784 #ifdef CONFIG_IGB_LRO
3785 if (adapter
->netdev
->features
& NETIF_F_LRO
&&
3786 skb
->ip_summed
== CHECKSUM_UNNECESSARY
) {
3788 lro_vlan_hwaccel_receive_skb(&ring
->lro_mgr
, skb
,
3790 le16_to_cpu(rx_desc
->wb
.upper
.vlan
),
3793 lro_receive_skb(&ring
->lro_mgr
,skb
, rx_desc
);
3798 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3799 le16_to_cpu(rx_desc
->wb
.upper
.vlan
));
3802 netif_receive_skb(skb
);
3803 #ifdef CONFIG_IGB_LRO
3809 static inline void igb_rx_checksum_adv(struct igb_adapter
*adapter
,
3810 u32 status_err
, struct sk_buff
*skb
)
3812 skb
->ip_summed
= CHECKSUM_NONE
;
3814 /* Ignore Checksum bit is set or checksum is disabled through ethtool */
3815 if ((status_err
& E1000_RXD_STAT_IXSM
) || !adapter
->rx_csum
)
3817 /* TCP/UDP checksum error bit is set */
3819 (E1000_RXDEXT_STATERR_TCPE
| E1000_RXDEXT_STATERR_IPE
)) {
3820 /* let the stack verify checksum errors */
3821 adapter
->hw_csum_err
++;
3824 /* It must be a TCP or UDP packet with a valid checksum */
3825 if (status_err
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
))
3826 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3828 adapter
->hw_csum_good
++;
3831 static bool igb_clean_rx_irq_adv(struct igb_ring
*rx_ring
,
3832 int *work_done
, int budget
)
3834 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3835 struct net_device
*netdev
= adapter
->netdev
;
3836 struct pci_dev
*pdev
= adapter
->pdev
;
3837 union e1000_adv_rx_desc
*rx_desc
, *next_rxd
;
3838 struct igb_buffer
*buffer_info
, *next_buffer
;
3839 struct sk_buff
*skb
;
3841 u32 length
, hlen
, staterr
;
3842 bool cleaned
= false;
3843 int cleaned_count
= 0;
3844 unsigned int total_bytes
= 0, total_packets
= 0;
3846 i
= rx_ring
->next_to_clean
;
3847 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3848 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3850 while (staterr
& E1000_RXD_STAT_DD
) {
3851 if (*work_done
>= budget
)
3854 buffer_info
= &rx_ring
->buffer_info
[i
];
3856 /* HW will not DMA in data larger than the given buffer, even
3857 * if it parses the (NFS, of course) header to be larger. In
3858 * that case, it fills the header buffer and spills the rest
3861 hlen
= (le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hdr_info
) &
3862 E1000_RXDADV_HDRBUFLEN_MASK
) >> E1000_RXDADV_HDRBUFLEN_SHIFT
;
3863 if (hlen
> adapter
->rx_ps_hdr_size
)
3864 hlen
= adapter
->rx_ps_hdr_size
;
3866 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
3870 skb
= buffer_info
->skb
;
3871 prefetch(skb
->data
- NET_IP_ALIGN
);
3872 buffer_info
->skb
= NULL
;
3873 if (!adapter
->rx_ps_hdr_size
) {
3874 pci_unmap_single(pdev
, buffer_info
->dma
,
3875 adapter
->rx_buffer_len
+
3877 PCI_DMA_FROMDEVICE
);
3878 skb_put(skb
, length
);
3882 if (!skb_shinfo(skb
)->nr_frags
) {
3883 pci_unmap_single(pdev
, buffer_info
->dma
,
3884 adapter
->rx_ps_hdr_size
+
3886 PCI_DMA_FROMDEVICE
);
3891 pci_unmap_page(pdev
, buffer_info
->page_dma
,
3892 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
3893 buffer_info
->page_dma
= 0;
3895 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
++,
3897 buffer_info
->page_offset
,
3900 if ((adapter
->rx_buffer_len
> (PAGE_SIZE
/ 2)) ||
3901 (page_count(buffer_info
->page
) != 1))
3902 buffer_info
->page
= NULL
;
3904 get_page(buffer_info
->page
);
3907 skb
->data_len
+= length
;
3909 skb
->truesize
+= length
;
3913 if (i
== rx_ring
->count
)
3915 next_rxd
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3917 next_buffer
= &rx_ring
->buffer_info
[i
];
3919 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
3920 buffer_info
->skb
= next_buffer
->skb
;
3921 buffer_info
->dma
= next_buffer
->dma
;
3922 next_buffer
->skb
= skb
;
3923 next_buffer
->dma
= 0;
3927 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
3928 dev_kfree_skb_irq(skb
);
3932 total_bytes
+= skb
->len
;
3935 igb_rx_checksum_adv(adapter
, staterr
, skb
);
3937 skb
->protocol
= eth_type_trans(skb
, netdev
);
3939 igb_receive_skb(rx_ring
, staterr
, rx_desc
, skb
);
3942 rx_desc
->wb
.upper
.status_error
= 0;
3944 /* return some buffers to hardware, one at a time is too slow */
3945 if (cleaned_count
>= IGB_RX_BUFFER_WRITE
) {
3946 igb_alloc_rx_buffers_adv(rx_ring
, cleaned_count
);
3950 /* use prefetched values */
3952 buffer_info
= next_buffer
;
3954 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3957 rx_ring
->next_to_clean
= i
;
3958 cleaned_count
= IGB_DESC_UNUSED(rx_ring
);
3960 #ifdef CONFIG_IGB_LRO
3961 if (rx_ring
->lro_used
) {
3962 lro_flush_all(&rx_ring
->lro_mgr
);
3963 rx_ring
->lro_used
= 0;
3968 igb_alloc_rx_buffers_adv(rx_ring
, cleaned_count
);
3970 rx_ring
->total_packets
+= total_packets
;
3971 rx_ring
->total_bytes
+= total_bytes
;
3972 rx_ring
->rx_stats
.packets
+= total_packets
;
3973 rx_ring
->rx_stats
.bytes
+= total_bytes
;
3974 adapter
->net_stats
.rx_bytes
+= total_bytes
;
3975 adapter
->net_stats
.rx_packets
+= total_packets
;
3981 * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
3982 * @adapter: address of board private structure
3984 static void igb_alloc_rx_buffers_adv(struct igb_ring
*rx_ring
,
3987 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3988 struct net_device
*netdev
= adapter
->netdev
;
3989 struct pci_dev
*pdev
= adapter
->pdev
;
3990 union e1000_adv_rx_desc
*rx_desc
;
3991 struct igb_buffer
*buffer_info
;
3992 struct sk_buff
*skb
;
3995 i
= rx_ring
->next_to_use
;
3996 buffer_info
= &rx_ring
->buffer_info
[i
];
3998 while (cleaned_count
--) {
3999 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
4001 if (adapter
->rx_ps_hdr_size
&& !buffer_info
->page_dma
) {
4002 if (!buffer_info
->page
) {
4003 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
4004 if (!buffer_info
->page
) {
4005 adapter
->alloc_rx_buff_failed
++;
4008 buffer_info
->page_offset
= 0;
4010 buffer_info
->page_offset
^= PAGE_SIZE
/ 2;
4012 buffer_info
->page_dma
=
4015 buffer_info
->page_offset
,
4017 PCI_DMA_FROMDEVICE
);
4020 if (!buffer_info
->skb
) {
4023 if (adapter
->rx_ps_hdr_size
)
4024 bufsz
= adapter
->rx_ps_hdr_size
;
4026 bufsz
= adapter
->rx_buffer_len
;
4027 bufsz
+= NET_IP_ALIGN
;
4028 skb
= netdev_alloc_skb(netdev
, bufsz
);
4031 adapter
->alloc_rx_buff_failed
++;
4035 /* Make buffer alignment 2 beyond a 16 byte boundary
4036 * this will result in a 16 byte aligned IP header after
4037 * the 14 byte MAC header is removed
4039 skb_reserve(skb
, NET_IP_ALIGN
);
4041 buffer_info
->skb
= skb
;
4042 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4044 PCI_DMA_FROMDEVICE
);
4047 /* Refresh the desc even if buffer_addrs didn't change because
4048 * each write-back erases this info. */
4049 if (adapter
->rx_ps_hdr_size
) {
4050 rx_desc
->read
.pkt_addr
=
4051 cpu_to_le64(buffer_info
->page_dma
);
4052 rx_desc
->read
.hdr_addr
= cpu_to_le64(buffer_info
->dma
);
4054 rx_desc
->read
.pkt_addr
=
4055 cpu_to_le64(buffer_info
->dma
);
4056 rx_desc
->read
.hdr_addr
= 0;
4060 if (i
== rx_ring
->count
)
4062 buffer_info
= &rx_ring
->buffer_info
[i
];
4066 if (rx_ring
->next_to_use
!= i
) {
4067 rx_ring
->next_to_use
= i
;
4069 i
= (rx_ring
->count
- 1);
4073 /* Force memory writes to complete before letting h/w
4074 * know there are new descriptors to fetch. (Only
4075 * applicable for weak-ordered memory model archs,
4076 * such as IA-64). */
4078 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
4088 static int igb_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4090 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4091 struct mii_ioctl_data
*data
= if_mii(ifr
);
4093 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4098 data
->phy_id
= adapter
->hw
.phy
.addr
;
4101 if (!capable(CAP_NET_ADMIN
))
4103 if (igb_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4120 static int igb_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4126 return igb_mii_ioctl(netdev
, ifr
, cmd
);
4132 static void igb_vlan_rx_register(struct net_device
*netdev
,
4133 struct vlan_group
*grp
)
4135 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4136 struct e1000_hw
*hw
= &adapter
->hw
;
4139 igb_irq_disable(adapter
);
4140 adapter
->vlgrp
= grp
;
4143 /* enable VLAN tag insert/strip */
4144 ctrl
= rd32(E1000_CTRL
);
4145 ctrl
|= E1000_CTRL_VME
;
4146 wr32(E1000_CTRL
, ctrl
);
4148 /* enable VLAN receive filtering */
4149 rctl
= rd32(E1000_RCTL
);
4150 rctl
&= ~E1000_RCTL_CFIEN
;
4151 wr32(E1000_RCTL
, rctl
);
4152 igb_update_mng_vlan(adapter
);
4154 adapter
->max_frame_size
+ VLAN_TAG_SIZE
);
4156 /* disable VLAN tag insert/strip */
4157 ctrl
= rd32(E1000_CTRL
);
4158 ctrl
&= ~E1000_CTRL_VME
;
4159 wr32(E1000_CTRL
, ctrl
);
4161 if (adapter
->mng_vlan_id
!= (u16
)IGB_MNG_VLAN_NONE
) {
4162 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4163 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
4166 adapter
->max_frame_size
);
4169 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4170 igb_irq_enable(adapter
);
4173 static void igb_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4175 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4176 struct e1000_hw
*hw
= &adapter
->hw
;
4179 if ((adapter
->hw
.mng_cookie
.status
&
4180 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
4181 (vid
== adapter
->mng_vlan_id
))
4183 /* add VID to filter table */
4184 index
= (vid
>> 5) & 0x7F;
4185 vfta
= array_rd32(E1000_VFTA
, index
);
4186 vfta
|= (1 << (vid
& 0x1F));
4187 igb_write_vfta(&adapter
->hw
, index
, vfta
);
4190 static void igb_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4192 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4193 struct e1000_hw
*hw
= &adapter
->hw
;
4196 igb_irq_disable(adapter
);
4197 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4199 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4200 igb_irq_enable(adapter
);
4202 if ((adapter
->hw
.mng_cookie
.status
&
4203 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
4204 (vid
== adapter
->mng_vlan_id
)) {
4205 /* release control to f/w */
4206 igb_release_hw_control(adapter
);
4210 /* remove VID from filter table */
4211 index
= (vid
>> 5) & 0x7F;
4212 vfta
= array_rd32(E1000_VFTA
, index
);
4213 vfta
&= ~(1 << (vid
& 0x1F));
4214 igb_write_vfta(&adapter
->hw
, index
, vfta
);
4217 static void igb_restore_vlan(struct igb_adapter
*adapter
)
4219 igb_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4221 if (adapter
->vlgrp
) {
4223 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4224 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4226 igb_vlan_rx_add_vid(adapter
->netdev
, vid
);
4231 int igb_set_spd_dplx(struct igb_adapter
*adapter
, u16 spddplx
)
4233 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4237 /* Fiber NICs only allow 1000 gbps Full duplex */
4238 if ((adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
) &&
4239 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4240 dev_err(&adapter
->pdev
->dev
,
4241 "Unsupported Speed/Duplex configuration\n");
4246 case SPEED_10
+ DUPLEX_HALF
:
4247 mac
->forced_speed_duplex
= ADVERTISE_10_HALF
;
4249 case SPEED_10
+ DUPLEX_FULL
:
4250 mac
->forced_speed_duplex
= ADVERTISE_10_FULL
;
4252 case SPEED_100
+ DUPLEX_HALF
:
4253 mac
->forced_speed_duplex
= ADVERTISE_100_HALF
;
4255 case SPEED_100
+ DUPLEX_FULL
:
4256 mac
->forced_speed_duplex
= ADVERTISE_100_FULL
;
4258 case SPEED_1000
+ DUPLEX_FULL
:
4260 adapter
->hw
.phy
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4262 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4264 dev_err(&adapter
->pdev
->dev
,
4265 "Unsupported Speed/Duplex configuration\n");
4272 static int igb_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4274 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4275 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4276 struct e1000_hw
*hw
= &adapter
->hw
;
4277 u32 ctrl
, rctl
, status
;
4278 u32 wufc
= adapter
->wol
;
4283 netif_device_detach(netdev
);
4285 if (netif_running(netdev
))
4288 igb_reset_interrupt_capability(adapter
);
4290 igb_free_queues(adapter
);
4293 retval
= pci_save_state(pdev
);
4298 status
= rd32(E1000_STATUS
);
4299 if (status
& E1000_STATUS_LU
)
4300 wufc
&= ~E1000_WUFC_LNKC
;
4303 igb_setup_rctl(adapter
);
4304 igb_set_multi(netdev
);
4306 /* turn on all-multi mode if wake on multicast is enabled */
4307 if (wufc
& E1000_WUFC_MC
) {
4308 rctl
= rd32(E1000_RCTL
);
4309 rctl
|= E1000_RCTL_MPE
;
4310 wr32(E1000_RCTL
, rctl
);
4313 ctrl
= rd32(E1000_CTRL
);
4314 /* advertise wake from D3Cold */
4315 #define E1000_CTRL_ADVD3WUC 0x00100000
4316 /* phy power management enable */
4317 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4318 ctrl
|= E1000_CTRL_ADVD3WUC
;
4319 wr32(E1000_CTRL
, ctrl
);
4321 /* Allow time for pending master requests to run */
4322 igb_disable_pcie_master(&adapter
->hw
);
4324 wr32(E1000_WUC
, E1000_WUC_PME_EN
);
4325 wr32(E1000_WUFC
, wufc
);
4328 wr32(E1000_WUFC
, 0);
4331 /* make sure adapter isn't asleep if manageability/wol is enabled */
4332 if (wufc
|| adapter
->en_mng_pt
) {
4333 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4334 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4336 igb_shutdown_fiber_serdes_link_82575(hw
);
4337 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4338 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4341 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4342 * would have already happened in close and is redundant. */
4343 igb_release_hw_control(adapter
);
4345 pci_disable_device(pdev
);
4347 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4353 static int igb_resume(struct pci_dev
*pdev
)
4355 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4356 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4357 struct e1000_hw
*hw
= &adapter
->hw
;
4360 pci_set_power_state(pdev
, PCI_D0
);
4361 pci_restore_state(pdev
);
4363 if (adapter
->need_ioport
)
4364 err
= pci_enable_device(pdev
);
4366 err
= pci_enable_device_mem(pdev
);
4369 "igb: Cannot enable PCI device from suspend\n");
4372 pci_set_master(pdev
);
4374 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4375 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4377 igb_set_interrupt_capability(adapter
);
4379 if (igb_alloc_queues(adapter
)) {
4380 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
4384 /* e1000_power_up_phy(adapter); */
4387 wr32(E1000_WUS
, ~0);
4389 if (netif_running(netdev
)) {
4390 err
= igb_open(netdev
);
4395 netif_device_attach(netdev
);
4397 /* let the f/w know that the h/w is now under the control of the
4399 igb_get_hw_control(adapter
);
4405 static void igb_shutdown(struct pci_dev
*pdev
)
4407 igb_suspend(pdev
, PMSG_SUSPEND
);
4410 #ifdef CONFIG_NET_POLL_CONTROLLER
4412 * Polling 'interrupt' - used by things like netconsole to send skbs
4413 * without having to re-enable interrupts. It's not called while
4414 * the interrupt routine is executing.
4416 static void igb_netpoll(struct net_device
*netdev
)
4418 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4422 igb_irq_disable(adapter
);
4423 adapter
->flags
|= IGB_FLAG_IN_NETPOLL
;
4425 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4426 igb_clean_tx_irq(&adapter
->tx_ring
[i
]);
4428 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4429 igb_clean_rx_irq_adv(&adapter
->rx_ring
[i
],
4431 adapter
->rx_ring
[i
].napi
.weight
);
4433 adapter
->flags
&= ~IGB_FLAG_IN_NETPOLL
;
4434 igb_irq_enable(adapter
);
4436 #endif /* CONFIG_NET_POLL_CONTROLLER */
4439 * igb_io_error_detected - called when PCI error is detected
4440 * @pdev: Pointer to PCI device
4441 * @state: The current pci connection state
4443 * This function is called after a PCI bus error affecting
4444 * this device has been detected.
4446 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*pdev
,
4447 pci_channel_state_t state
)
4449 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4450 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4452 netif_device_detach(netdev
);
4454 if (netif_running(netdev
))
4456 pci_disable_device(pdev
);
4458 /* Request a slot slot reset. */
4459 return PCI_ERS_RESULT_NEED_RESET
;
4463 * igb_io_slot_reset - called after the pci bus has been reset.
4464 * @pdev: Pointer to PCI device
4466 * Restart the card from scratch, as if from a cold-boot. Implementation
4467 * resembles the first-half of the igb_resume routine.
4469 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*pdev
)
4471 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4472 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4473 struct e1000_hw
*hw
= &adapter
->hw
;
4474 pci_ers_result_t result
;
4477 if (adapter
->need_ioport
)
4478 err
= pci_enable_device(pdev
);
4480 err
= pci_enable_device_mem(pdev
);
4484 "Cannot re-enable PCI device after reset.\n");
4485 result
= PCI_ERS_RESULT_DISCONNECT
;
4487 pci_set_master(pdev
);
4488 pci_restore_state(pdev
);
4490 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4491 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4494 wr32(E1000_WUS
, ~0);
4495 result
= PCI_ERS_RESULT_RECOVERED
;
4498 pci_cleanup_aer_uncorrect_error_status(pdev
);
4504 * igb_io_resume - called when traffic can start flowing again.
4505 * @pdev: Pointer to PCI device
4507 * This callback is called when the error recovery driver tells us that
4508 * its OK to resume normal operation. Implementation resembles the
4509 * second-half of the igb_resume routine.
4511 static void igb_io_resume(struct pci_dev
*pdev
)
4513 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4514 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4516 if (netif_running(netdev
)) {
4517 if (igb_up(adapter
)) {
4518 dev_err(&pdev
->dev
, "igb_up failed after reset\n");
4523 netif_device_attach(netdev
);
4525 /* let the f/w know that the h/w is now under the control of the
4527 igb_get_hw_control(adapter
);