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/delay.h>
42 #include <linux/interrupt.h>
43 #include <linux/if_ether.h>
47 #define DRV_VERSION "1.0.8-k2"
48 char igb_driver_name
[] = "igb";
49 char igb_driver_version
[] = DRV_VERSION
;
50 static const char igb_driver_string
[] =
51 "Intel(R) Gigabit Ethernet Network Driver";
52 static const char igb_copyright
[] = "Copyright (c) 2007 Intel Corporation.";
55 static const struct e1000_info
*igb_info_tbl
[] = {
56 [board_82575
] = &e1000_82575_info
,
59 static struct pci_device_id igb_pci_tbl
[] = {
60 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575EB_COPPER
), board_82575
},
61 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575EB_FIBER_SERDES
), board_82575
},
62 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575GB_QUAD_COPPER
), board_82575
},
63 /* required last entry */
67 MODULE_DEVICE_TABLE(pci
, igb_pci_tbl
);
69 void igb_reset(struct igb_adapter
*);
70 static int igb_setup_all_tx_resources(struct igb_adapter
*);
71 static int igb_setup_all_rx_resources(struct igb_adapter
*);
72 static void igb_free_all_tx_resources(struct igb_adapter
*);
73 static void igb_free_all_rx_resources(struct igb_adapter
*);
74 static void igb_free_tx_resources(struct igb_adapter
*, struct igb_ring
*);
75 static void igb_free_rx_resources(struct igb_adapter
*, struct igb_ring
*);
76 void igb_update_stats(struct igb_adapter
*);
77 static int igb_probe(struct pci_dev
*, const struct pci_device_id
*);
78 static void __devexit
igb_remove(struct pci_dev
*pdev
);
79 static int igb_sw_init(struct igb_adapter
*);
80 static int igb_open(struct net_device
*);
81 static int igb_close(struct net_device
*);
82 static void igb_configure_tx(struct igb_adapter
*);
83 static void igb_configure_rx(struct igb_adapter
*);
84 static void igb_setup_rctl(struct igb_adapter
*);
85 static void igb_clean_all_tx_rings(struct igb_adapter
*);
86 static void igb_clean_all_rx_rings(struct igb_adapter
*);
87 static void igb_clean_tx_ring(struct igb_adapter
*, struct igb_ring
*);
88 static void igb_clean_rx_ring(struct igb_adapter
*, struct igb_ring
*);
89 static void igb_set_multi(struct net_device
*);
90 static void igb_update_phy_info(unsigned long);
91 static void igb_watchdog(unsigned long);
92 static void igb_watchdog_task(struct work_struct
*);
93 static int igb_xmit_frame_ring_adv(struct sk_buff
*, struct net_device
*,
95 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*);
96 static struct net_device_stats
*igb_get_stats(struct net_device
*);
97 static int igb_change_mtu(struct net_device
*, int);
98 static int igb_set_mac(struct net_device
*, void *);
99 static irqreturn_t
igb_intr(int irq
, void *);
100 static irqreturn_t
igb_intr_msi(int irq
, void *);
101 static irqreturn_t
igb_msix_other(int irq
, void *);
102 static irqreturn_t
igb_msix_rx(int irq
, void *);
103 static irqreturn_t
igb_msix_tx(int irq
, void *);
104 static int igb_clean_rx_ring_msix(struct napi_struct
*, int);
105 static bool igb_clean_tx_irq(struct igb_adapter
*, struct igb_ring
*);
106 static int igb_clean(struct napi_struct
*, int);
107 static bool igb_clean_rx_irq_adv(struct igb_adapter
*,
108 struct igb_ring
*, int *, int);
109 static void igb_alloc_rx_buffers_adv(struct igb_adapter
*,
110 struct igb_ring
*, int);
111 static int igb_ioctl(struct net_device
*, struct ifreq
*, int cmd
);
112 static void igb_tx_timeout(struct net_device
*);
113 static void igb_reset_task(struct work_struct
*);
114 static void igb_vlan_rx_register(struct net_device
*, struct vlan_group
*);
115 static void igb_vlan_rx_add_vid(struct net_device
*, u16
);
116 static void igb_vlan_rx_kill_vid(struct net_device
*, u16
);
117 static void igb_restore_vlan(struct igb_adapter
*);
119 static int igb_suspend(struct pci_dev
*, pm_message_t
);
121 static int igb_resume(struct pci_dev
*);
123 static void igb_shutdown(struct pci_dev
*);
125 #ifdef CONFIG_NET_POLL_CONTROLLER
126 /* for netdump / net console */
127 static void igb_netpoll(struct net_device
*);
130 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*,
131 pci_channel_state_t
);
132 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*);
133 static void igb_io_resume(struct pci_dev
*);
135 static struct pci_error_handlers igb_err_handler
= {
136 .error_detected
= igb_io_error_detected
,
137 .slot_reset
= igb_io_slot_reset
,
138 .resume
= igb_io_resume
,
142 static struct pci_driver igb_driver
= {
143 .name
= igb_driver_name
,
144 .id_table
= igb_pci_tbl
,
146 .remove
= __devexit_p(igb_remove
),
148 /* Power Managment Hooks */
149 .suspend
= igb_suspend
,
150 .resume
= igb_resume
,
152 .shutdown
= igb_shutdown
,
153 .err_handler
= &igb_err_handler
156 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
157 MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
158 MODULE_LICENSE("GPL");
159 MODULE_VERSION(DRV_VERSION
);
163 * igb_get_hw_dev_name - return device name string
164 * used by hardware layer to print debugging information
166 char *igb_get_hw_dev_name(struct e1000_hw
*hw
)
168 struct igb_adapter
*adapter
= hw
->back
;
169 return adapter
->netdev
->name
;
174 * igb_init_module - Driver Registration Routine
176 * igb_init_module is the first routine called when the driver is
177 * loaded. All it does is register with the PCI subsystem.
179 static int __init
igb_init_module(void)
182 printk(KERN_INFO
"%s - version %s\n",
183 igb_driver_string
, igb_driver_version
);
185 printk(KERN_INFO
"%s\n", igb_copyright
);
187 ret
= pci_register_driver(&igb_driver
);
191 module_init(igb_init_module
);
194 * igb_exit_module - Driver Exit Cleanup Routine
196 * igb_exit_module is called just before the driver is removed
199 static void __exit
igb_exit_module(void)
201 pci_unregister_driver(&igb_driver
);
204 module_exit(igb_exit_module
);
207 * igb_alloc_queues - Allocate memory for all rings
208 * @adapter: board private structure to initialize
210 * We allocate one ring per queue at run-time since we don't know the
211 * number of queues at compile-time.
213 static int igb_alloc_queues(struct igb_adapter
*adapter
)
217 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
218 sizeof(struct igb_ring
), GFP_KERNEL
);
219 if (!adapter
->tx_ring
)
222 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
223 sizeof(struct igb_ring
), GFP_KERNEL
);
224 if (!adapter
->rx_ring
) {
225 kfree(adapter
->tx_ring
);
229 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
230 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
231 ring
->adapter
= adapter
;
232 ring
->itr_register
= E1000_ITR
;
234 if (!ring
->napi
.poll
)
235 netif_napi_add(adapter
->netdev
, &ring
->napi
, igb_clean
,
236 adapter
->napi
.weight
/
237 adapter
->num_rx_queues
);
242 #define IGB_N0_QUEUE -1
243 static void igb_assign_vector(struct igb_adapter
*adapter
, int rx_queue
,
244 int tx_queue
, int msix_vector
)
247 struct e1000_hw
*hw
= &adapter
->hw
;
248 /* The 82575 assigns vectors using a bitmask, which matches the
249 bitmask for the EICR/EIMS/EIMC registers. To assign one
250 or more queues to a vector, we write the appropriate bits
251 into the MSIXBM register for that vector. */
252 if (rx_queue
> IGB_N0_QUEUE
) {
253 msixbm
= E1000_EICR_RX_QUEUE0
<< rx_queue
;
254 adapter
->rx_ring
[rx_queue
].eims_value
= msixbm
;
256 if (tx_queue
> IGB_N0_QUEUE
) {
257 msixbm
|= E1000_EICR_TX_QUEUE0
<< tx_queue
;
258 adapter
->tx_ring
[tx_queue
].eims_value
=
259 E1000_EICR_TX_QUEUE0
<< tx_queue
;
261 array_wr32(E1000_MSIXBM(0), msix_vector
, msixbm
);
265 * igb_configure_msix - Configure MSI-X hardware
267 * igb_configure_msix sets up the hardware to properly
268 * generate MSI-X interrupts.
270 static void igb_configure_msix(struct igb_adapter
*adapter
)
274 struct e1000_hw
*hw
= &adapter
->hw
;
276 adapter
->eims_enable_mask
= 0;
278 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
279 struct igb_ring
*tx_ring
= &adapter
->tx_ring
[i
];
280 igb_assign_vector(adapter
, IGB_N0_QUEUE
, i
, vector
++);
281 adapter
->eims_enable_mask
|= tx_ring
->eims_value
;
282 if (tx_ring
->itr_val
)
283 writel(1000000000 / (tx_ring
->itr_val
* 256),
284 hw
->hw_addr
+ tx_ring
->itr_register
);
286 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
289 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
290 struct igb_ring
*rx_ring
= &adapter
->rx_ring
[i
];
291 igb_assign_vector(adapter
, i
, IGB_N0_QUEUE
, vector
++);
292 adapter
->eims_enable_mask
|= rx_ring
->eims_value
;
293 if (rx_ring
->itr_val
)
294 writel(1000000000 / (rx_ring
->itr_val
* 256),
295 hw
->hw_addr
+ rx_ring
->itr_register
);
297 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
301 /* set vector for other causes, i.e. link changes */
302 array_wr32(E1000_MSIXBM(0), vector
++,
305 /* disable IAM for ICR interrupt bits */
308 tmp
= rd32(E1000_CTRL_EXT
);
309 /* enable MSI-X PBA support*/
310 tmp
|= E1000_CTRL_EXT_PBA_CLR
;
312 /* Auto-Mask interrupts upon ICR read. */
313 tmp
|= E1000_CTRL_EXT_EIAME
;
314 tmp
|= E1000_CTRL_EXT_IRCA
;
316 wr32(E1000_CTRL_EXT
, tmp
);
317 adapter
->eims_enable_mask
|= E1000_EIMS_OTHER
;
323 * igb_request_msix - Initialize MSI-X interrupts
325 * igb_request_msix allocates MSI-X vectors and requests interrupts from the
328 static int igb_request_msix(struct igb_adapter
*adapter
)
330 struct net_device
*netdev
= adapter
->netdev
;
331 int i
, err
= 0, vector
= 0;
335 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
336 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
337 sprintf(ring
->name
, "%s-tx%d", netdev
->name
, i
);
338 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
339 &igb_msix_tx
, 0, ring
->name
,
340 &(adapter
->tx_ring
[i
]));
343 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
344 ring
->itr_val
= adapter
->itr
;
347 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
348 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
349 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
350 sprintf(ring
->name
, "%s-rx%d", netdev
->name
, i
);
352 memcpy(ring
->name
, netdev
->name
, IFNAMSIZ
);
353 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
354 &igb_msix_rx
, 0, ring
->name
,
355 &(adapter
->rx_ring
[i
]));
358 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
359 ring
->itr_val
= adapter
->itr
;
363 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
364 &igb_msix_other
, 0, netdev
->name
, netdev
);
368 adapter
->napi
.poll
= igb_clean_rx_ring_msix
;
369 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
370 adapter
->rx_ring
[i
].napi
.poll
= adapter
->napi
.poll
;
371 igb_configure_msix(adapter
);
377 static void igb_reset_interrupt_capability(struct igb_adapter
*adapter
)
379 if (adapter
->msix_entries
) {
380 pci_disable_msix(adapter
->pdev
);
381 kfree(adapter
->msix_entries
);
382 adapter
->msix_entries
= NULL
;
383 } else if (adapter
->msi_enabled
)
384 pci_disable_msi(adapter
->pdev
);
390 * igb_set_interrupt_capability - set MSI or MSI-X if supported
392 * Attempt to configure interrupts using the best available
393 * capabilities of the hardware and kernel.
395 static void igb_set_interrupt_capability(struct igb_adapter
*adapter
)
400 numvecs
= adapter
->num_tx_queues
+ adapter
->num_rx_queues
+ 1;
401 adapter
->msix_entries
= kcalloc(numvecs
, sizeof(struct msix_entry
),
403 if (!adapter
->msix_entries
)
406 for (i
= 0; i
< numvecs
; i
++)
407 adapter
->msix_entries
[i
].entry
= i
;
409 err
= pci_enable_msix(adapter
->pdev
,
410 adapter
->msix_entries
,
415 igb_reset_interrupt_capability(adapter
);
417 /* If we can't do MSI-X, try MSI */
419 adapter
->num_rx_queues
= 1;
420 if (!pci_enable_msi(adapter
->pdev
))
421 adapter
->msi_enabled
= 1;
426 * igb_request_irq - initialize interrupts
428 * Attempts to configure interrupts using the best available
429 * capabilities of the hardware and kernel.
431 static int igb_request_irq(struct igb_adapter
*adapter
)
433 struct net_device
*netdev
= adapter
->netdev
;
434 struct e1000_hw
*hw
= &adapter
->hw
;
437 if (adapter
->msix_entries
) {
438 err
= igb_request_msix(adapter
);
440 /* enable IAM, auto-mask,
441 * DO NOT USE EIAM or IAM in legacy mode */
442 wr32(E1000_IAM
, IMS_ENABLE_MASK
);
445 /* fall back to MSI */
446 igb_reset_interrupt_capability(adapter
);
447 if (!pci_enable_msi(adapter
->pdev
))
448 adapter
->msi_enabled
= 1;
449 igb_free_all_tx_resources(adapter
);
450 igb_free_all_rx_resources(adapter
);
451 adapter
->num_rx_queues
= 1;
452 igb_alloc_queues(adapter
);
454 if (adapter
->msi_enabled
) {
455 err
= request_irq(adapter
->pdev
->irq
, &igb_intr_msi
, 0,
456 netdev
->name
, netdev
);
459 /* fall back to legacy interrupts */
460 igb_reset_interrupt_capability(adapter
);
461 adapter
->msi_enabled
= 0;
464 err
= request_irq(adapter
->pdev
->irq
, &igb_intr
, IRQF_SHARED
,
465 netdev
->name
, netdev
);
468 dev_err(&adapter
->pdev
->dev
, "Error %d getting interrupt\n",
475 static void igb_free_irq(struct igb_adapter
*adapter
)
477 struct net_device
*netdev
= adapter
->netdev
;
479 if (adapter
->msix_entries
) {
482 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
483 free_irq(adapter
->msix_entries
[vector
++].vector
,
484 &(adapter
->tx_ring
[i
]));
485 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
486 free_irq(adapter
->msix_entries
[vector
++].vector
,
487 &(adapter
->rx_ring
[i
]));
489 free_irq(adapter
->msix_entries
[vector
++].vector
, netdev
);
493 free_irq(adapter
->pdev
->irq
, netdev
);
497 * igb_irq_disable - Mask off interrupt generation on the NIC
498 * @adapter: board private structure
500 static void igb_irq_disable(struct igb_adapter
*adapter
)
502 struct e1000_hw
*hw
= &adapter
->hw
;
504 if (adapter
->msix_entries
) {
505 wr32(E1000_EIMC
, ~0);
510 synchronize_irq(adapter
->pdev
->irq
);
514 * igb_irq_enable - Enable default interrupt generation settings
515 * @adapter: board private structure
517 static void igb_irq_enable(struct igb_adapter
*adapter
)
519 struct e1000_hw
*hw
= &adapter
->hw
;
521 if (adapter
->msix_entries
) {
523 adapter
->eims_enable_mask
);
525 adapter
->eims_enable_mask
);
526 wr32(E1000_IMS
, E1000_IMS_LSC
);
528 wr32(E1000_IMS
, IMS_ENABLE_MASK
);
531 static void igb_update_mng_vlan(struct igb_adapter
*adapter
)
533 struct net_device
*netdev
= adapter
->netdev
;
534 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
535 u16 old_vid
= adapter
->mng_vlan_id
;
536 if (adapter
->vlgrp
) {
537 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
538 if (adapter
->hw
.mng_cookie
.status
&
539 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
540 igb_vlan_rx_add_vid(netdev
, vid
);
541 adapter
->mng_vlan_id
= vid
;
543 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
545 if ((old_vid
!= (u16
)IGB_MNG_VLAN_NONE
) &&
547 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
548 igb_vlan_rx_kill_vid(netdev
, old_vid
);
550 adapter
->mng_vlan_id
= vid
;
555 * igb_release_hw_control - release control of the h/w to f/w
556 * @adapter: address of board private structure
558 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
559 * For ASF and Pass Through versions of f/w this means that the
560 * driver is no longer loaded.
563 static void igb_release_hw_control(struct igb_adapter
*adapter
)
565 struct e1000_hw
*hw
= &adapter
->hw
;
568 /* Let firmware take over control of h/w */
569 ctrl_ext
= rd32(E1000_CTRL_EXT
);
571 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
576 * igb_get_hw_control - get control of the h/w from f/w
577 * @adapter: address of board private structure
579 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
580 * For ASF and Pass Through versions of f/w this means that
581 * the driver is loaded.
584 static void igb_get_hw_control(struct igb_adapter
*adapter
)
586 struct e1000_hw
*hw
= &adapter
->hw
;
589 /* Let firmware know the driver has taken over */
590 ctrl_ext
= rd32(E1000_CTRL_EXT
);
592 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
595 static void igb_init_manageability(struct igb_adapter
*adapter
)
597 struct e1000_hw
*hw
= &adapter
->hw
;
599 if (adapter
->en_mng_pt
) {
600 u32 manc2h
= rd32(E1000_MANC2H
);
601 u32 manc
= rd32(E1000_MANC
);
603 /* enable receiving management packets to the host */
604 /* this will probably generate destination unreachable messages
605 * from the host OS, but the packets will be handled on SMBUS */
606 manc
|= E1000_MANC_EN_MNG2HOST
;
607 #define E1000_MNG2HOST_PORT_623 (1 << 5)
608 #define E1000_MNG2HOST_PORT_664 (1 << 6)
609 manc2h
|= E1000_MNG2HOST_PORT_623
;
610 manc2h
|= E1000_MNG2HOST_PORT_664
;
611 wr32(E1000_MANC2H
, manc2h
);
613 wr32(E1000_MANC
, manc
);
618 * igb_configure - configure the hardware for RX and TX
619 * @adapter: private board structure
621 static void igb_configure(struct igb_adapter
*adapter
)
623 struct net_device
*netdev
= adapter
->netdev
;
626 igb_get_hw_control(adapter
);
627 igb_set_multi(netdev
);
629 igb_restore_vlan(adapter
);
630 igb_init_manageability(adapter
);
632 igb_configure_tx(adapter
);
633 igb_setup_rctl(adapter
);
634 igb_configure_rx(adapter
);
635 /* call IGB_DESC_UNUSED which always leaves
636 * at least 1 descriptor unused to make sure
637 * next_to_use != next_to_clean */
638 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
639 struct igb_ring
*ring
= &adapter
->rx_ring
[i
];
640 igb_alloc_rx_buffers_adv(adapter
, ring
, IGB_DESC_UNUSED(ring
));
644 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
649 * igb_up - Open the interface and prepare it to handle traffic
650 * @adapter: board private structure
653 int igb_up(struct igb_adapter
*adapter
)
655 struct e1000_hw
*hw
= &adapter
->hw
;
658 /* hardware has been reset, we need to reload some things */
659 igb_configure(adapter
);
661 clear_bit(__IGB_DOWN
, &adapter
->state
);
663 napi_enable(&adapter
->napi
);
665 if (adapter
->msix_entries
) {
666 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
667 napi_enable(&adapter
->rx_ring
[i
].napi
);
668 igb_configure_msix(adapter
);
671 /* Clear any pending interrupts. */
673 igb_irq_enable(adapter
);
675 /* Fire a link change interrupt to start the watchdog. */
676 wr32(E1000_ICS
, E1000_ICS_LSC
);
680 void igb_down(struct igb_adapter
*adapter
)
682 struct e1000_hw
*hw
= &adapter
->hw
;
683 struct net_device
*netdev
= adapter
->netdev
;
687 /* signal that we're down so the interrupt handler does not
688 * reschedule our watchdog timer */
689 set_bit(__IGB_DOWN
, &adapter
->state
);
691 /* disable receives in the hardware */
692 rctl
= rd32(E1000_RCTL
);
693 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
694 /* flush and sleep below */
696 netif_stop_queue(netdev
);
698 /* disable transmits in the hardware */
699 tctl
= rd32(E1000_TCTL
);
700 tctl
&= ~E1000_TCTL_EN
;
701 wr32(E1000_TCTL
, tctl
);
702 /* flush both disables and wait for them to finish */
706 napi_disable(&adapter
->napi
);
708 if (adapter
->msix_entries
)
709 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
710 napi_disable(&adapter
->rx_ring
[i
].napi
);
711 igb_irq_disable(adapter
);
713 del_timer_sync(&adapter
->watchdog_timer
);
714 del_timer_sync(&adapter
->phy_info_timer
);
716 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
717 netif_carrier_off(netdev
);
718 adapter
->link_speed
= 0;
719 adapter
->link_duplex
= 0;
721 if (!pci_channel_offline(adapter
->pdev
))
723 igb_clean_all_tx_rings(adapter
);
724 igb_clean_all_rx_rings(adapter
);
727 void igb_reinit_locked(struct igb_adapter
*adapter
)
729 WARN_ON(in_interrupt());
730 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
734 clear_bit(__IGB_RESETTING
, &adapter
->state
);
737 void igb_reset(struct igb_adapter
*adapter
)
739 struct e1000_hw
*hw
= &adapter
->hw
;
740 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
741 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
744 /* Repartition Pba for greater than 9k mtu
745 * To take effect CTRL.RST is required.
749 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
750 /* adjust PBA for jumbo frames */
751 wr32(E1000_PBA
, pba
);
753 /* To maintain wire speed transmits, the Tx FIFO should be
754 * large enough to accommodate two full transmit packets,
755 * rounded up to the next 1KB and expressed in KB. Likewise,
756 * the Rx FIFO should be large enough to accommodate at least
757 * one full receive packet and is similarly rounded up and
758 * expressed in KB. */
759 pba
= rd32(E1000_PBA
);
760 /* upper 16 bits has Tx packet buffer allocation size in KB */
761 tx_space
= pba
>> 16;
762 /* lower 16 bits has Rx packet buffer allocation size in KB */
764 /* the tx fifo also stores 16 bytes of information about the tx
765 * but don't include ethernet FCS because hardware appends it */
766 min_tx_space
= (adapter
->max_frame_size
+
767 sizeof(struct e1000_tx_desc
) -
769 min_tx_space
= ALIGN(min_tx_space
, 1024);
771 /* software strips receive CRC, so leave room for it */
772 min_rx_space
= adapter
->max_frame_size
;
773 min_rx_space
= ALIGN(min_rx_space
, 1024);
776 /* If current Tx allocation is less than the min Tx FIFO size,
777 * and the min Tx FIFO size is less than the current Rx FIFO
778 * allocation, take space away from current Rx allocation */
779 if (tx_space
< min_tx_space
&&
780 ((min_tx_space
- tx_space
) < pba
)) {
781 pba
= pba
- (min_tx_space
- tx_space
);
783 /* if short on rx space, rx wins and must trump tx
785 if (pba
< min_rx_space
)
789 wr32(E1000_PBA
, pba
);
791 /* flow control settings */
792 /* The high water mark must be low enough to fit one full frame
793 * (or the size used for early receive) above it in the Rx FIFO.
794 * Set it to the lower of:
795 * - 90% of the Rx FIFO size, or
796 * - the full Rx FIFO size minus one full frame */
797 hwm
= min(((pba
<< 10) * 9 / 10),
798 ((pba
<< 10) - adapter
->max_frame_size
));
800 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
801 fc
->low_water
= fc
->high_water
- 8;
802 fc
->pause_time
= 0xFFFF;
804 fc
->type
= fc
->original_type
;
806 /* Allow time for pending master requests to run */
807 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
810 if (adapter
->hw
.mac
.ops
.init_hw(&adapter
->hw
))
811 dev_err(&adapter
->pdev
->dev
, "Hardware Error\n");
813 igb_update_mng_vlan(adapter
);
815 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
816 wr32(E1000_VET
, ETHERNET_IEEE_VLAN_TYPE
);
818 igb_reset_adaptive(&adapter
->hw
);
819 if (adapter
->hw
.phy
.ops
.get_phy_info
)
820 adapter
->hw
.phy
.ops
.get_phy_info(&adapter
->hw
);
824 * igb_is_need_ioport - determine if an adapter needs ioport resources or not
825 * @pdev: PCI device information struct
827 * Returns true if an adapter needs ioport resources
829 static int igb_is_need_ioport(struct pci_dev
*pdev
)
831 switch (pdev
->device
) {
832 /* Currently there are no adapters that need ioport resources */
839 * igb_probe - Device Initialization Routine
840 * @pdev: PCI device information struct
841 * @ent: entry in igb_pci_tbl
843 * Returns 0 on success, negative on failure
845 * igb_probe initializes an adapter identified by a pci_dev structure.
846 * The OS initialization, configuring of the adapter private structure,
847 * and a hardware reset occur.
849 static int __devinit
igb_probe(struct pci_dev
*pdev
,
850 const struct pci_device_id
*ent
)
852 struct net_device
*netdev
;
853 struct igb_adapter
*adapter
;
855 const struct e1000_info
*ei
= igb_info_tbl
[ent
->driver_data
];
856 unsigned long mmio_start
, mmio_len
;
857 static int cards_found
;
858 int i
, err
, pci_using_dac
;
860 u16 eeprom_apme_mask
= IGB_EEPROM_APME
;
862 int bars
, need_ioport
;
864 /* do not allocate ioport bars when not needed */
865 need_ioport
= igb_is_need_ioport(pdev
);
867 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
868 err
= pci_enable_device(pdev
);
870 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
871 err
= pci_enable_device_mem(pdev
);
877 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
879 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
883 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
885 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
887 dev_err(&pdev
->dev
, "No usable DMA "
888 "configuration, aborting\n");
894 err
= pci_request_selected_regions(pdev
, bars
, igb_driver_name
);
898 pci_set_master(pdev
);
899 pci_save_state(pdev
);
902 netdev
= alloc_etherdev(sizeof(struct igb_adapter
));
904 goto err_alloc_etherdev
;
906 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
908 pci_set_drvdata(pdev
, netdev
);
909 adapter
= netdev_priv(netdev
);
910 adapter
->netdev
= netdev
;
911 adapter
->pdev
= pdev
;
914 adapter
->msg_enable
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
915 adapter
->bars
= bars
;
916 adapter
->need_ioport
= need_ioport
;
918 mmio_start
= pci_resource_start(pdev
, 0);
919 mmio_len
= pci_resource_len(pdev
, 0);
922 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
923 if (!adapter
->hw
.hw_addr
)
926 netdev
->open
= &igb_open
;
927 netdev
->stop
= &igb_close
;
928 netdev
->get_stats
= &igb_get_stats
;
929 netdev
->set_multicast_list
= &igb_set_multi
;
930 netdev
->set_mac_address
= &igb_set_mac
;
931 netdev
->change_mtu
= &igb_change_mtu
;
932 netdev
->do_ioctl
= &igb_ioctl
;
933 igb_set_ethtool_ops(netdev
);
934 netdev
->tx_timeout
= &igb_tx_timeout
;
935 netdev
->watchdog_timeo
= 5 * HZ
;
936 netif_napi_add(netdev
, &adapter
->napi
, igb_clean
, 64);
937 netdev
->vlan_rx_register
= igb_vlan_rx_register
;
938 netdev
->vlan_rx_add_vid
= igb_vlan_rx_add_vid
;
939 netdev
->vlan_rx_kill_vid
= igb_vlan_rx_kill_vid
;
940 #ifdef CONFIG_NET_POLL_CONTROLLER
941 netdev
->poll_controller
= igb_netpoll
;
943 netdev
->hard_start_xmit
= &igb_xmit_frame_adv
;
945 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
947 netdev
->mem_start
= mmio_start
;
948 netdev
->mem_end
= mmio_start
+ mmio_len
;
950 adapter
->bd_number
= cards_found
;
952 /* PCI config space info */
953 hw
->vendor_id
= pdev
->vendor
;
954 hw
->device_id
= pdev
->device
;
955 hw
->revision_id
= pdev
->revision
;
956 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
957 hw
->subsystem_device_id
= pdev
->subsystem_device
;
959 /* setup the private structure */
961 /* Copy the default MAC, PHY and NVM function pointers */
962 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
963 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
964 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
965 /* Initialize skew-specific constants */
966 err
= ei
->get_invariants(hw
);
970 err
= igb_sw_init(adapter
);
974 igb_get_bus_info_pcie(hw
);
976 hw
->phy
.autoneg_wait_to_complete
= false;
977 hw
->mac
.adaptive_ifs
= true;
980 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
981 hw
->phy
.mdix
= AUTO_ALL_MODES
;
982 hw
->phy
.disable_polarity_correction
= false;
983 hw
->phy
.ms_type
= e1000_ms_hw_default
;
986 if (igb_check_reset_block(hw
))
988 "PHY reset is blocked due to SOL/IDER session.\n");
990 netdev
->features
= NETIF_F_SG
|
994 NETIF_F_HW_VLAN_FILTER
;
996 netdev
->features
|= NETIF_F_TSO
;
997 netdev
->features
|= NETIF_F_TSO6
;
999 netdev
->vlan_features
|= NETIF_F_TSO
;
1000 netdev
->vlan_features
|= NETIF_F_TSO6
;
1001 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
1002 netdev
->vlan_features
|= NETIF_F_SG
;
1005 netdev
->features
|= NETIF_F_HIGHDMA
;
1007 netdev
->features
|= NETIF_F_LLTX
;
1008 adapter
->en_mng_pt
= igb_enable_mng_pass_thru(&adapter
->hw
);
1010 /* before reading the NVM, reset the controller to put the device in a
1011 * known good starting state */
1012 hw
->mac
.ops
.reset_hw(hw
);
1014 /* make sure the NVM is good */
1015 if (igb_validate_nvm_checksum(hw
) < 0) {
1016 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
1021 /* copy the MAC address out of the NVM */
1022 if (hw
->mac
.ops
.read_mac_addr(hw
))
1023 dev_err(&pdev
->dev
, "NVM Read Error\n");
1025 memcpy(netdev
->dev_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1026 memcpy(netdev
->perm_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1028 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1029 dev_err(&pdev
->dev
, "Invalid MAC Address\n");
1034 init_timer(&adapter
->watchdog_timer
);
1035 adapter
->watchdog_timer
.function
= &igb_watchdog
;
1036 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1038 init_timer(&adapter
->phy_info_timer
);
1039 adapter
->phy_info_timer
.function
= &igb_update_phy_info
;
1040 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
1042 INIT_WORK(&adapter
->reset_task
, igb_reset_task
);
1043 INIT_WORK(&adapter
->watchdog_task
, igb_watchdog_task
);
1045 /* Initialize link & ring properties that are user-changeable */
1046 adapter
->tx_ring
->count
= 256;
1047 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1048 adapter
->tx_ring
[i
].count
= adapter
->tx_ring
->count
;
1049 adapter
->rx_ring
->count
= 256;
1050 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1051 adapter
->rx_ring
[i
].count
= adapter
->rx_ring
->count
;
1053 adapter
->fc_autoneg
= true;
1054 hw
->mac
.autoneg
= true;
1055 hw
->phy
.autoneg_advertised
= 0x2f;
1057 hw
->fc
.original_type
= e1000_fc_default
;
1058 hw
->fc
.type
= e1000_fc_default
;
1060 adapter
->itr_setting
= 3;
1061 adapter
->itr
= IGB_START_ITR
;
1063 igb_validate_mdi_setting(hw
);
1065 adapter
->rx_csum
= 1;
1067 /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
1068 * enable the ACPI Magic Packet filter
1071 if (hw
->bus
.func
== 0 ||
1072 hw
->device_id
== E1000_DEV_ID_82575EB_COPPER
)
1073 hw
->nvm
.ops
.read_nvm(hw
, NVM_INIT_CONTROL3_PORT_A
, 1,
1076 if (eeprom_data
& eeprom_apme_mask
)
1077 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1079 /* now that we have the eeprom settings, apply the special cases where
1080 * the eeprom may be wrong or the board simply won't support wake on
1081 * lan on a particular port */
1082 switch (pdev
->device
) {
1083 case E1000_DEV_ID_82575GB_QUAD_COPPER
:
1084 adapter
->eeprom_wol
= 0;
1086 case E1000_DEV_ID_82575EB_FIBER_SERDES
:
1087 /* Wake events only supported on port A for dual fiber
1088 * regardless of eeprom setting */
1089 if (rd32(E1000_STATUS
) & E1000_STATUS_FUNC_1
)
1090 adapter
->eeprom_wol
= 0;
1094 /* initialize the wol settings based on the eeprom settings */
1095 adapter
->wol
= adapter
->eeprom_wol
;
1097 /* reset the hardware with the new settings */
1100 /* let the f/w know that the h/w is now under the control of the
1102 igb_get_hw_control(adapter
);
1104 /* tell the stack to leave us alone until igb_open() is called */
1105 netif_carrier_off(netdev
);
1106 netif_stop_queue(netdev
);
1108 strcpy(netdev
->name
, "eth%d");
1109 err
= register_netdev(netdev
);
1113 dev_info(&pdev
->dev
, "Intel(R) Gigabit Ethernet Network Connection\n");
1114 /* print bus type/speed/width info */
1115 dev_info(&pdev
->dev
,
1116 "%s: (PCIe:%s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n",
1118 ((hw
->bus
.speed
== e1000_bus_speed_2500
)
1119 ? "2.5Gb/s" : "unknown"),
1120 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
)
1121 ? "Width x4" : (hw
->bus
.width
== e1000_bus_width_pcie_x1
)
1122 ? "Width x1" : "unknown"),
1123 netdev
->dev_addr
[0], netdev
->dev_addr
[1], netdev
->dev_addr
[2],
1124 netdev
->dev_addr
[3], netdev
->dev_addr
[4], netdev
->dev_addr
[5]);
1126 igb_read_part_num(hw
, &part_num
);
1127 dev_info(&pdev
->dev
, "%s: PBA No: %06x-%03x\n", netdev
->name
,
1128 (part_num
>> 8), (part_num
& 0xff));
1130 dev_info(&pdev
->dev
,
1131 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
1132 adapter
->msix_entries
? "MSI-X" :
1133 adapter
->msi_enabled
? "MSI" : "legacy",
1134 adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1140 igb_release_hw_control(adapter
);
1142 if (!igb_check_reset_block(hw
))
1143 hw
->phy
.ops
.reset_phy(hw
);
1145 if (hw
->flash_address
)
1146 iounmap(hw
->flash_address
);
1148 igb_remove_device(hw
);
1149 kfree(adapter
->tx_ring
);
1150 kfree(adapter
->rx_ring
);
1153 iounmap(hw
->hw_addr
);
1155 free_netdev(netdev
);
1157 pci_release_selected_regions(pdev
, bars
);
1160 pci_disable_device(pdev
);
1165 * igb_remove - Device Removal Routine
1166 * @pdev: PCI device information struct
1168 * igb_remove is called by the PCI subsystem to alert the driver
1169 * that it should release a PCI device. The could be caused by a
1170 * Hot-Plug event, or because the driver is going to be removed from
1173 static void __devexit
igb_remove(struct pci_dev
*pdev
)
1175 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1176 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1178 /* flush_scheduled work may reschedule our watchdog task, so
1179 * explicitly disable watchdog tasks from being rescheduled */
1180 set_bit(__IGB_DOWN
, &adapter
->state
);
1181 del_timer_sync(&adapter
->watchdog_timer
);
1182 del_timer_sync(&adapter
->phy_info_timer
);
1184 flush_scheduled_work();
1186 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1187 * would have already happened in close and is redundant. */
1188 igb_release_hw_control(adapter
);
1190 unregister_netdev(netdev
);
1192 if (!igb_check_reset_block(&adapter
->hw
))
1193 adapter
->hw
.phy
.ops
.reset_phy(&adapter
->hw
);
1195 igb_remove_device(&adapter
->hw
);
1196 igb_reset_interrupt_capability(adapter
);
1198 kfree(adapter
->tx_ring
);
1199 kfree(adapter
->rx_ring
);
1201 iounmap(adapter
->hw
.hw_addr
);
1202 if (adapter
->hw
.flash_address
)
1203 iounmap(adapter
->hw
.flash_address
);
1204 pci_release_selected_regions(pdev
, adapter
->bars
);
1206 free_netdev(netdev
);
1208 pci_disable_device(pdev
);
1212 * igb_sw_init - Initialize general software structures (struct igb_adapter)
1213 * @adapter: board private structure to initialize
1215 * igb_sw_init initializes the Adapter private data structure.
1216 * Fields are initialized based on PCI device information and
1217 * OS network device settings (MTU size).
1219 static int __devinit
igb_sw_init(struct igb_adapter
*adapter
)
1221 struct e1000_hw
*hw
= &adapter
->hw
;
1222 struct net_device
*netdev
= adapter
->netdev
;
1223 struct pci_dev
*pdev
= adapter
->pdev
;
1225 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->bus
.pci_cmd_word
);
1227 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1228 adapter
->rx_ps_hdr_size
= 0; /* disable packet split */
1229 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1230 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
1232 /* Number of supported queues. */
1233 /* Having more queues than CPUs doesn't make sense. */
1234 adapter
->num_tx_queues
= 1;
1235 adapter
->num_rx_queues
= min(IGB_MAX_RX_QUEUES
, num_online_cpus());
1237 igb_set_interrupt_capability(adapter
);
1239 if (igb_alloc_queues(adapter
)) {
1240 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
1244 /* Explicitly disable IRQ since the NIC can be in any state. */
1245 igb_irq_disable(adapter
);
1247 set_bit(__IGB_DOWN
, &adapter
->state
);
1252 * igb_open - Called when a network interface is made active
1253 * @netdev: network interface device structure
1255 * Returns 0 on success, negative value on failure
1257 * The open entry point is called when a network interface is made
1258 * active by the system (IFF_UP). At this point all resources needed
1259 * for transmit and receive operations are allocated, the interrupt
1260 * handler is registered with the OS, the watchdog timer is started,
1261 * and the stack is notified that the interface is ready.
1263 static int igb_open(struct net_device
*netdev
)
1265 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1266 struct e1000_hw
*hw
= &adapter
->hw
;
1270 /* disallow open during test */
1271 if (test_bit(__IGB_TESTING
, &adapter
->state
))
1274 /* allocate transmit descriptors */
1275 err
= igb_setup_all_tx_resources(adapter
);
1279 /* allocate receive descriptors */
1280 err
= igb_setup_all_rx_resources(adapter
);
1284 /* e1000_power_up_phy(adapter); */
1286 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
1287 if ((adapter
->hw
.mng_cookie
.status
&
1288 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
1289 igb_update_mng_vlan(adapter
);
1291 /* before we allocate an interrupt, we must be ready to handle it.
1292 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1293 * as soon as we call pci_request_irq, so we have to setup our
1294 * clean_rx handler before we do so. */
1295 igb_configure(adapter
);
1297 err
= igb_request_irq(adapter
);
1301 /* From here on the code is the same as igb_up() */
1302 clear_bit(__IGB_DOWN
, &adapter
->state
);
1304 napi_enable(&adapter
->napi
);
1305 if (adapter
->msix_entries
)
1306 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1307 napi_enable(&adapter
->rx_ring
[i
].napi
);
1309 igb_irq_enable(adapter
);
1311 /* Clear any pending interrupts. */
1313 /* Fire a link status change interrupt to start the watchdog. */
1314 wr32(E1000_ICS
, E1000_ICS_LSC
);
1319 igb_release_hw_control(adapter
);
1320 /* e1000_power_down_phy(adapter); */
1321 igb_free_all_rx_resources(adapter
);
1323 igb_free_all_tx_resources(adapter
);
1331 * igb_close - Disables a network interface
1332 * @netdev: network interface device structure
1334 * Returns 0, this is not allowed to fail
1336 * The close entry point is called when an interface is de-activated
1337 * by the OS. The hardware is still under the driver's control, but
1338 * needs to be disabled. A global MAC reset is issued to stop the
1339 * hardware, and all transmit and receive resources are freed.
1341 static int igb_close(struct net_device
*netdev
)
1343 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1345 WARN_ON(test_bit(__IGB_RESETTING
, &adapter
->state
));
1348 igb_free_irq(adapter
);
1350 igb_free_all_tx_resources(adapter
);
1351 igb_free_all_rx_resources(adapter
);
1353 /* kill manageability vlan ID if supported, but not if a vlan with
1354 * the same ID is registered on the host OS (let 8021q kill it) */
1355 if ((adapter
->hw
.mng_cookie
.status
&
1356 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1358 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
1359 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1365 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
1366 * @adapter: board private structure
1367 * @tx_ring: tx descriptor ring (for a specific queue) to setup
1369 * Return 0 on success, negative on failure
1372 int igb_setup_tx_resources(struct igb_adapter
*adapter
,
1373 struct igb_ring
*tx_ring
)
1375 struct pci_dev
*pdev
= adapter
->pdev
;
1378 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
1379 tx_ring
->buffer_info
= vmalloc(size
);
1380 if (!tx_ring
->buffer_info
)
1382 memset(tx_ring
->buffer_info
, 0, size
);
1384 /* round up to nearest 4K */
1385 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
)
1387 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1389 tx_ring
->desc
= pci_alloc_consistent(pdev
, tx_ring
->size
,
1395 tx_ring
->adapter
= adapter
;
1396 tx_ring
->next_to_use
= 0;
1397 tx_ring
->next_to_clean
= 0;
1398 spin_lock_init(&tx_ring
->tx_clean_lock
);
1399 spin_lock_init(&tx_ring
->tx_lock
);
1403 vfree(tx_ring
->buffer_info
);
1404 dev_err(&adapter
->pdev
->dev
,
1405 "Unable to allocate memory for the transmit descriptor ring\n");
1410 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
1411 * (Descriptors) for all queues
1412 * @adapter: board private structure
1414 * Return 0 on success, negative on failure
1416 static int igb_setup_all_tx_resources(struct igb_adapter
*adapter
)
1420 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1421 err
= igb_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1423 dev_err(&adapter
->pdev
->dev
,
1424 "Allocation for Tx Queue %u failed\n", i
);
1425 for (i
--; i
>= 0; i
--)
1426 igb_free_tx_resources(adapter
,
1427 &adapter
->tx_ring
[i
]);
1436 * igb_configure_tx - Configure transmit Unit after Reset
1437 * @adapter: board private structure
1439 * Configure the Tx unit of the MAC after a reset.
1441 static void igb_configure_tx(struct igb_adapter
*adapter
)
1444 struct e1000_hw
*hw
= &adapter
->hw
;
1449 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1450 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
1452 wr32(E1000_TDLEN(i
),
1453 ring
->count
* sizeof(struct e1000_tx_desc
));
1455 wr32(E1000_TDBAL(i
),
1456 tdba
& 0x00000000ffffffffULL
);
1457 wr32(E1000_TDBAH(i
), tdba
>> 32);
1459 tdwba
= ring
->dma
+ ring
->count
* sizeof(struct e1000_tx_desc
);
1460 tdwba
|= 1; /* enable head wb */
1461 wr32(E1000_TDWBAL(i
),
1462 tdwba
& 0x00000000ffffffffULL
);
1463 wr32(E1000_TDWBAH(i
), tdwba
>> 32);
1465 ring
->head
= E1000_TDH(i
);
1466 ring
->tail
= E1000_TDT(i
);
1467 writel(0, hw
->hw_addr
+ ring
->tail
);
1468 writel(0, hw
->hw_addr
+ ring
->head
);
1469 txdctl
= rd32(E1000_TXDCTL(i
));
1470 txdctl
|= E1000_TXDCTL_QUEUE_ENABLE
;
1471 wr32(E1000_TXDCTL(i
), txdctl
);
1473 /* Turn off Relaxed Ordering on head write-backs. The
1474 * writebacks MUST be delivered in order or it will
1475 * completely screw up our bookeeping.
1477 txctrl
= rd32(E1000_DCA_TXCTRL(i
));
1478 txctrl
&= ~E1000_DCA_TXCTRL_TX_WB_RO_EN
;
1479 wr32(E1000_DCA_TXCTRL(i
), txctrl
);
1484 /* Use the default values for the Tx Inter Packet Gap (IPG) timer */
1486 /* Program the Transmit Control Register */
1488 tctl
= rd32(E1000_TCTL
);
1489 tctl
&= ~E1000_TCTL_CT
;
1490 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1491 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1493 igb_config_collision_dist(hw
);
1495 /* Setup Transmit Descriptor Settings for eop descriptor */
1496 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_RS
;
1498 /* Enable transmits */
1499 tctl
|= E1000_TCTL_EN
;
1501 wr32(E1000_TCTL
, tctl
);
1505 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
1506 * @adapter: board private structure
1507 * @rx_ring: rx descriptor ring (for a specific queue) to setup
1509 * Returns 0 on success, negative on failure
1512 int igb_setup_rx_resources(struct igb_adapter
*adapter
,
1513 struct igb_ring
*rx_ring
)
1515 struct pci_dev
*pdev
= adapter
->pdev
;
1518 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
1519 rx_ring
->buffer_info
= vmalloc(size
);
1520 if (!rx_ring
->buffer_info
)
1522 memset(rx_ring
->buffer_info
, 0, size
);
1524 desc_len
= sizeof(union e1000_adv_rx_desc
);
1526 /* Round up to nearest 4K */
1527 rx_ring
->size
= rx_ring
->count
* desc_len
;
1528 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1530 rx_ring
->desc
= pci_alloc_consistent(pdev
, rx_ring
->size
,
1536 rx_ring
->next_to_clean
= 0;
1537 rx_ring
->next_to_use
= 0;
1538 rx_ring
->pending_skb
= NULL
;
1540 rx_ring
->adapter
= adapter
;
1541 /* FIXME: do we want to setup ring->napi->poll here? */
1542 rx_ring
->napi
.poll
= adapter
->napi
.poll
;
1547 vfree(rx_ring
->buffer_info
);
1548 dev_err(&adapter
->pdev
->dev
, "Unable to allocate memory for "
1549 "the receive descriptor ring\n");
1554 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
1555 * (Descriptors) for all queues
1556 * @adapter: board private structure
1558 * Return 0 on success, negative on failure
1560 static int igb_setup_all_rx_resources(struct igb_adapter
*adapter
)
1564 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1565 err
= igb_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1567 dev_err(&adapter
->pdev
->dev
,
1568 "Allocation for Rx Queue %u failed\n", i
);
1569 for (i
--; i
>= 0; i
--)
1570 igb_free_rx_resources(adapter
,
1571 &adapter
->rx_ring
[i
]);
1580 * igb_setup_rctl - configure the receive control registers
1581 * @adapter: Board private structure
1583 static void igb_setup_rctl(struct igb_adapter
*adapter
)
1585 struct e1000_hw
*hw
= &adapter
->hw
;
1590 rctl
= rd32(E1000_RCTL
);
1592 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1594 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1595 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1596 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1598 /* disable the stripping of CRC because it breaks
1599 * BMC firmware connected over SMBUS
1600 rctl |= E1000_RCTL_SECRC;
1603 rctl
&= ~E1000_RCTL_SBP
;
1605 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1606 rctl
&= ~E1000_RCTL_LPE
;
1608 rctl
|= E1000_RCTL_LPE
;
1609 if (adapter
->rx_buffer_len
<= IGB_RXBUFFER_2048
) {
1610 /* Setup buffer sizes */
1611 rctl
&= ~E1000_RCTL_SZ_4096
;
1612 rctl
|= E1000_RCTL_BSEX
;
1613 switch (adapter
->rx_buffer_len
) {
1614 case IGB_RXBUFFER_256
:
1615 rctl
|= E1000_RCTL_SZ_256
;
1616 rctl
&= ~E1000_RCTL_BSEX
;
1618 case IGB_RXBUFFER_512
:
1619 rctl
|= E1000_RCTL_SZ_512
;
1620 rctl
&= ~E1000_RCTL_BSEX
;
1622 case IGB_RXBUFFER_1024
:
1623 rctl
|= E1000_RCTL_SZ_1024
;
1624 rctl
&= ~E1000_RCTL_BSEX
;
1626 case IGB_RXBUFFER_2048
:
1628 rctl
|= E1000_RCTL_SZ_2048
;
1629 rctl
&= ~E1000_RCTL_BSEX
;
1631 case IGB_RXBUFFER_4096
:
1632 rctl
|= E1000_RCTL_SZ_4096
;
1634 case IGB_RXBUFFER_8192
:
1635 rctl
|= E1000_RCTL_SZ_8192
;
1637 case IGB_RXBUFFER_16384
:
1638 rctl
|= E1000_RCTL_SZ_16384
;
1642 rctl
&= ~E1000_RCTL_BSEX
;
1643 srrctl
= adapter
->rx_buffer_len
>> E1000_SRRCTL_BSIZEPKT_SHIFT
;
1646 /* 82575 and greater support packet-split where the protocol
1647 * header is placed in skb->data and the packet data is
1648 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1649 * In the case of a non-split, skb->data is linearly filled,
1650 * followed by the page buffers. Therefore, skb->data is
1651 * sized to hold the largest protocol header.
1653 /* allocations using alloc_page take too long for regular MTU
1654 * so only enable packet split for jumbo frames */
1655 if (rctl
& E1000_RCTL_LPE
) {
1656 adapter
->rx_ps_hdr_size
= IGB_RXBUFFER_128
;
1657 srrctl
= adapter
->rx_ps_hdr_size
<<
1658 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT
;
1659 /* buffer size is ALWAYS one page */
1660 srrctl
|= PAGE_SIZE
>> E1000_SRRCTL_BSIZEPKT_SHIFT
;
1661 srrctl
|= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
1663 adapter
->rx_ps_hdr_size
= 0;
1664 srrctl
|= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF
;
1667 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1668 wr32(E1000_SRRCTL(i
), srrctl
);
1670 wr32(E1000_RCTL
, rctl
);
1674 * igb_configure_rx - Configure receive Unit after Reset
1675 * @adapter: board private structure
1677 * Configure the Rx unit of the MAC after a reset.
1679 static void igb_configure_rx(struct igb_adapter
*adapter
)
1682 struct e1000_hw
*hw
= &adapter
->hw
;
1687 /* disable receives while setting up the descriptors */
1688 rctl
= rd32(E1000_RCTL
);
1689 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
1693 if (adapter
->itr_setting
> 3)
1695 1000000000 / (adapter
->itr
* 256));
1697 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1698 * the Base and Length of the Rx Descriptor Ring */
1699 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1700 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
1702 wr32(E1000_RDBAL(i
),
1703 rdba
& 0x00000000ffffffffULL
);
1704 wr32(E1000_RDBAH(i
), rdba
>> 32);
1705 wr32(E1000_RDLEN(i
),
1706 ring
->count
* sizeof(union e1000_adv_rx_desc
));
1708 ring
->head
= E1000_RDH(i
);
1709 ring
->tail
= E1000_RDT(i
);
1710 writel(0, hw
->hw_addr
+ ring
->tail
);
1711 writel(0, hw
->hw_addr
+ ring
->head
);
1713 rxdctl
= rd32(E1000_RXDCTL(i
));
1714 rxdctl
|= E1000_RXDCTL_QUEUE_ENABLE
;
1715 rxdctl
&= 0xFFF00000;
1716 rxdctl
|= IGB_RX_PTHRESH
;
1717 rxdctl
|= IGB_RX_HTHRESH
<< 8;
1718 rxdctl
|= IGB_RX_WTHRESH
<< 16;
1719 wr32(E1000_RXDCTL(i
), rxdctl
);
1722 if (adapter
->num_rx_queues
> 1) {
1731 get_random_bytes(&random
[0], 40);
1734 for (j
= 0; j
< (32 * 4); j
++) {
1736 (j
% adapter
->num_rx_queues
) << shift
;
1739 hw
->hw_addr
+ E1000_RETA(0) + (j
& ~3));
1741 mrqc
= E1000_MRQC_ENABLE_RSS_4Q
;
1743 /* Fill out hash function seeds */
1744 for (j
= 0; j
< 10; j
++)
1745 array_wr32(E1000_RSSRK(0), j
, random
[j
]);
1747 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1748 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1749 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6
|
1750 E1000_MRQC_RSS_FIELD_IPV6_TCP
);
1751 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4_UDP
|
1752 E1000_MRQC_RSS_FIELD_IPV6_UDP
);
1753 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX
|
1754 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
1757 wr32(E1000_MRQC
, mrqc
);
1759 /* Multiqueue and raw packet checksumming are mutually
1760 * exclusive. Note that this not the same as TCP/IP
1761 * checksumming, which works fine. */
1762 rxcsum
= rd32(E1000_RXCSUM
);
1763 rxcsum
|= E1000_RXCSUM_PCSD
;
1764 wr32(E1000_RXCSUM
, rxcsum
);
1766 /* Enable Receive Checksum Offload for TCP and UDP */
1767 rxcsum
= rd32(E1000_RXCSUM
);
1768 if (adapter
->rx_csum
) {
1769 rxcsum
|= E1000_RXCSUM_TUOFL
;
1771 /* Enable IPv4 payload checksum for UDP fragments
1772 * Must be used in conjunction with packet-split. */
1773 if (adapter
->rx_ps_hdr_size
)
1774 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1776 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1777 /* don't need to clear IPPCSE as it defaults to 0 */
1779 wr32(E1000_RXCSUM
, rxcsum
);
1784 adapter
->max_frame_size
+ VLAN_TAG_SIZE
);
1786 wr32(E1000_RLPML
, adapter
->max_frame_size
);
1788 /* Enable Receives */
1789 wr32(E1000_RCTL
, rctl
);
1793 * igb_free_tx_resources - Free Tx Resources per Queue
1794 * @adapter: board private structure
1795 * @tx_ring: Tx descriptor ring for a specific queue
1797 * Free all transmit software resources
1799 static void igb_free_tx_resources(struct igb_adapter
*adapter
,
1800 struct igb_ring
*tx_ring
)
1802 struct pci_dev
*pdev
= adapter
->pdev
;
1804 igb_clean_tx_ring(adapter
, tx_ring
);
1806 vfree(tx_ring
->buffer_info
);
1807 tx_ring
->buffer_info
= NULL
;
1809 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1811 tx_ring
->desc
= NULL
;
1815 * igb_free_all_tx_resources - Free Tx Resources for All Queues
1816 * @adapter: board private structure
1818 * Free all transmit software resources
1820 static void igb_free_all_tx_resources(struct igb_adapter
*adapter
)
1824 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1825 igb_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1828 static void igb_unmap_and_free_tx_resource(struct igb_adapter
*adapter
,
1829 struct igb_buffer
*buffer_info
)
1831 if (buffer_info
->dma
) {
1832 pci_unmap_page(adapter
->pdev
,
1834 buffer_info
->length
,
1836 buffer_info
->dma
= 0;
1838 if (buffer_info
->skb
) {
1839 dev_kfree_skb_any(buffer_info
->skb
);
1840 buffer_info
->skb
= NULL
;
1842 buffer_info
->time_stamp
= 0;
1843 /* buffer_info must be completely set up in the transmit path */
1847 * igb_clean_tx_ring - Free Tx Buffers
1848 * @adapter: board private structure
1849 * @tx_ring: ring to be cleaned
1851 static void igb_clean_tx_ring(struct igb_adapter
*adapter
,
1852 struct igb_ring
*tx_ring
)
1854 struct igb_buffer
*buffer_info
;
1858 if (!tx_ring
->buffer_info
)
1860 /* Free all the Tx ring sk_buffs */
1862 for (i
= 0; i
< tx_ring
->count
; i
++) {
1863 buffer_info
= &tx_ring
->buffer_info
[i
];
1864 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
1867 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
1868 memset(tx_ring
->buffer_info
, 0, size
);
1870 /* Zero out the descriptor ring */
1872 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1874 tx_ring
->next_to_use
= 0;
1875 tx_ring
->next_to_clean
= 0;
1877 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
1878 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
1882 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
1883 * @adapter: board private structure
1885 static void igb_clean_all_tx_rings(struct igb_adapter
*adapter
)
1889 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1890 igb_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1894 * igb_free_rx_resources - Free Rx Resources
1895 * @adapter: board private structure
1896 * @rx_ring: ring to clean the resources from
1898 * Free all receive software resources
1900 static void igb_free_rx_resources(struct igb_adapter
*adapter
,
1901 struct igb_ring
*rx_ring
)
1903 struct pci_dev
*pdev
= adapter
->pdev
;
1905 igb_clean_rx_ring(adapter
, rx_ring
);
1907 vfree(rx_ring
->buffer_info
);
1908 rx_ring
->buffer_info
= NULL
;
1910 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1912 rx_ring
->desc
= NULL
;
1916 * igb_free_all_rx_resources - Free Rx Resources for All Queues
1917 * @adapter: board private structure
1919 * Free all receive software resources
1921 static void igb_free_all_rx_resources(struct igb_adapter
*adapter
)
1925 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1926 igb_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1930 * igb_clean_rx_ring - Free Rx Buffers per Queue
1931 * @adapter: board private structure
1932 * @rx_ring: ring to free buffers from
1934 static void igb_clean_rx_ring(struct igb_adapter
*adapter
,
1935 struct igb_ring
*rx_ring
)
1937 struct igb_buffer
*buffer_info
;
1938 struct pci_dev
*pdev
= adapter
->pdev
;
1942 if (!rx_ring
->buffer_info
)
1944 /* Free all the Rx ring sk_buffs */
1945 for (i
= 0; i
< rx_ring
->count
; i
++) {
1946 buffer_info
= &rx_ring
->buffer_info
[i
];
1947 if (buffer_info
->dma
) {
1948 if (adapter
->rx_ps_hdr_size
)
1949 pci_unmap_single(pdev
, buffer_info
->dma
,
1950 adapter
->rx_ps_hdr_size
,
1951 PCI_DMA_FROMDEVICE
);
1953 pci_unmap_single(pdev
, buffer_info
->dma
,
1954 adapter
->rx_buffer_len
,
1955 PCI_DMA_FROMDEVICE
);
1956 buffer_info
->dma
= 0;
1959 if (buffer_info
->skb
) {
1960 dev_kfree_skb(buffer_info
->skb
);
1961 buffer_info
->skb
= NULL
;
1963 if (buffer_info
->page
) {
1964 pci_unmap_page(pdev
, buffer_info
->page_dma
,
1965 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1966 put_page(buffer_info
->page
);
1967 buffer_info
->page
= NULL
;
1968 buffer_info
->page_dma
= 0;
1972 /* there also may be some cached data from a chained receive */
1973 if (rx_ring
->pending_skb
) {
1974 dev_kfree_skb(rx_ring
->pending_skb
);
1975 rx_ring
->pending_skb
= NULL
;
1978 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
1979 memset(rx_ring
->buffer_info
, 0, size
);
1981 /* Zero out the descriptor ring */
1982 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1984 rx_ring
->next_to_clean
= 0;
1985 rx_ring
->next_to_use
= 0;
1987 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
1988 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
1992 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
1993 * @adapter: board private structure
1995 static void igb_clean_all_rx_rings(struct igb_adapter
*adapter
)
1999 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2000 igb_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2004 * igb_set_mac - Change the Ethernet Address of the NIC
2005 * @netdev: network interface device structure
2006 * @p: pointer to an address structure
2008 * Returns 0 on success, negative on failure
2010 static int igb_set_mac(struct net_device
*netdev
, void *p
)
2012 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2013 struct sockaddr
*addr
= p
;
2015 if (!is_valid_ether_addr(addr
->sa_data
))
2016 return -EADDRNOTAVAIL
;
2018 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2019 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
2021 adapter
->hw
.mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
2027 * igb_set_multi - Multicast and Promiscuous mode set
2028 * @netdev: network interface device structure
2030 * The set_multi entry point is called whenever the multicast address
2031 * list or the network interface flags are updated. This routine is
2032 * responsible for configuring the hardware for proper multicast,
2033 * promiscuous mode, and all-multi behavior.
2035 static void igb_set_multi(struct net_device
*netdev
)
2037 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2038 struct e1000_hw
*hw
= &adapter
->hw
;
2039 struct e1000_mac_info
*mac
= &hw
->mac
;
2040 struct dev_mc_list
*mc_ptr
;
2045 /* Check for Promiscuous and All Multicast modes */
2047 rctl
= rd32(E1000_RCTL
);
2049 if (netdev
->flags
& IFF_PROMISC
)
2050 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2051 else if (netdev
->flags
& IFF_ALLMULTI
) {
2052 rctl
|= E1000_RCTL_MPE
;
2053 rctl
&= ~E1000_RCTL_UPE
;
2055 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2057 wr32(E1000_RCTL
, rctl
);
2059 if (!netdev
->mc_count
) {
2060 /* nothing to program, so clear mc list */
2061 igb_update_mc_addr_list(hw
, NULL
, 0, 1,
2062 mac
->rar_entry_count
);
2066 mta_list
= kzalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2070 /* The shared function expects a packed array of only addresses. */
2071 mc_ptr
= netdev
->mc_list
;
2073 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2076 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
, ETH_ALEN
);
2077 mc_ptr
= mc_ptr
->next
;
2079 igb_update_mc_addr_list(hw
, mta_list
, i
, 1, mac
->rar_entry_count
);
2083 /* Need to wait a few seconds after link up to get diagnostic information from
2085 static void igb_update_phy_info(unsigned long data
)
2087 struct igb_adapter
*adapter
= (struct igb_adapter
*) data
;
2088 if (adapter
->hw
.phy
.ops
.get_phy_info
)
2089 adapter
->hw
.phy
.ops
.get_phy_info(&adapter
->hw
);
2093 * igb_watchdog - Timer Call-back
2094 * @data: pointer to adapter cast into an unsigned long
2096 static void igb_watchdog(unsigned long data
)
2098 struct igb_adapter
*adapter
= (struct igb_adapter
*)data
;
2099 /* Do the rest outside of interrupt context */
2100 schedule_work(&adapter
->watchdog_task
);
2103 static void igb_watchdog_task(struct work_struct
*work
)
2105 struct igb_adapter
*adapter
= container_of(work
,
2106 struct igb_adapter
, watchdog_task
);
2107 struct e1000_hw
*hw
= &adapter
->hw
;
2109 struct net_device
*netdev
= adapter
->netdev
;
2110 struct igb_ring
*tx_ring
= adapter
->tx_ring
;
2111 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
2115 if ((netif_carrier_ok(netdev
)) &&
2116 (rd32(E1000_STATUS
) & E1000_STATUS_LU
))
2119 ret_val
= hw
->mac
.ops
.check_for_link(&adapter
->hw
);
2120 if ((ret_val
== E1000_ERR_PHY
) &&
2121 (hw
->phy
.type
== e1000_phy_igp_3
) &&
2123 E1000_PHY_CTRL_GBE_DISABLE
))
2124 dev_info(&adapter
->pdev
->dev
,
2125 "Gigabit has been disabled, downgrading speed\n");
2127 if ((hw
->phy
.media_type
== e1000_media_type_internal_serdes
) &&
2128 !(rd32(E1000_TXCW
) & E1000_TXCW_ANE
))
2129 link
= mac
->serdes_has_link
;
2131 link
= rd32(E1000_STATUS
) &
2135 if (!netif_carrier_ok(netdev
)) {
2137 hw
->mac
.ops
.get_speed_and_duplex(&adapter
->hw
,
2138 &adapter
->link_speed
,
2139 &adapter
->link_duplex
);
2141 ctrl
= rd32(E1000_CTRL
);
2142 dev_info(&adapter
->pdev
->dev
,
2143 "NIC Link is Up %d Mbps %s, "
2144 "Flow Control: %s\n",
2145 adapter
->link_speed
,
2146 adapter
->link_duplex
== FULL_DUPLEX
?
2147 "Full Duplex" : "Half Duplex",
2148 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2149 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2150 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2151 E1000_CTRL_TFCE
) ? "TX" : "None")));
2153 /* tweak tx_queue_len according to speed/duplex and
2154 * adjust the timeout factor */
2155 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2156 adapter
->tx_timeout_factor
= 1;
2157 switch (adapter
->link_speed
) {
2159 netdev
->tx_queue_len
= 10;
2160 adapter
->tx_timeout_factor
= 14;
2163 netdev
->tx_queue_len
= 100;
2164 /* maybe add some timeout factor ? */
2168 netif_carrier_on(netdev
);
2169 netif_wake_queue(netdev
);
2171 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2172 mod_timer(&adapter
->phy_info_timer
,
2173 round_jiffies(jiffies
+ 2 * HZ
));
2176 if (netif_carrier_ok(netdev
)) {
2177 adapter
->link_speed
= 0;
2178 adapter
->link_duplex
= 0;
2179 dev_info(&adapter
->pdev
->dev
, "NIC Link is Down\n");
2180 netif_carrier_off(netdev
);
2181 netif_stop_queue(netdev
);
2182 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2183 mod_timer(&adapter
->phy_info_timer
,
2184 round_jiffies(jiffies
+ 2 * HZ
));
2189 igb_update_stats(adapter
);
2191 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2192 adapter
->tpt_old
= adapter
->stats
.tpt
;
2193 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2194 adapter
->colc_old
= adapter
->stats
.colc
;
2196 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
2197 adapter
->gorc_old
= adapter
->stats
.gorc
;
2198 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
2199 adapter
->gotc_old
= adapter
->stats
.gotc
;
2201 igb_update_adaptive(&adapter
->hw
);
2203 if (!netif_carrier_ok(netdev
)) {
2204 if (IGB_DESC_UNUSED(tx_ring
) + 1 < tx_ring
->count
) {
2205 /* We've lost link, so the controller stops DMA,
2206 * but we've got queued Tx work that's never going
2207 * to get done, so reset controller to flush Tx.
2208 * (Do the reset outside of interrupt context). */
2209 adapter
->tx_timeout_count
++;
2210 schedule_work(&adapter
->reset_task
);
2214 /* Cause software interrupt to ensure rx ring is cleaned */
2215 wr32(E1000_ICS
, E1000_ICS_RXDMT0
);
2217 /* Force detection of hung controller every watchdog period */
2218 tx_ring
->detect_tx_hung
= true;
2220 /* Reset the timer */
2221 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2222 mod_timer(&adapter
->watchdog_timer
,
2223 round_jiffies(jiffies
+ 2 * HZ
));
2226 enum latency_range
{
2230 latency_invalid
= 255
2234 static void igb_lower_rx_eitr(struct igb_adapter
*adapter
,
2235 struct igb_ring
*rx_ring
)
2237 struct e1000_hw
*hw
= &adapter
->hw
;
2240 new_val
= rx_ring
->itr_val
/ 2;
2241 if (new_val
< IGB_MIN_DYN_ITR
)
2242 new_val
= IGB_MIN_DYN_ITR
;
2244 if (new_val
!= rx_ring
->itr_val
) {
2245 rx_ring
->itr_val
= new_val
;
2246 wr32(rx_ring
->itr_register
,
2247 1000000000 / (new_val
* 256));
2251 static void igb_raise_rx_eitr(struct igb_adapter
*adapter
,
2252 struct igb_ring
*rx_ring
)
2254 struct e1000_hw
*hw
= &adapter
->hw
;
2257 new_val
= rx_ring
->itr_val
* 2;
2258 if (new_val
> IGB_MAX_DYN_ITR
)
2259 new_val
= IGB_MAX_DYN_ITR
;
2261 if (new_val
!= rx_ring
->itr_val
) {
2262 rx_ring
->itr_val
= new_val
;
2263 wr32(rx_ring
->itr_register
,
2264 1000000000 / (new_val
* 256));
2269 * igb_update_itr - update the dynamic ITR value based on statistics
2270 * Stores a new ITR value based on packets and byte
2271 * counts during the last interrupt. The advantage of per interrupt
2272 * computation is faster updates and more accurate ITR for the current
2273 * traffic pattern. Constants in this function were computed
2274 * based on theoretical maximum wire speed and thresholds were set based
2275 * on testing data as well as attempting to minimize response time
2276 * while increasing bulk throughput.
2277 * this functionality is controlled by the InterruptThrottleRate module
2278 * parameter (see igb_param.c)
2279 * NOTE: These calculations are only valid when operating in a single-
2280 * queue environment.
2281 * @adapter: pointer to adapter
2282 * @itr_setting: current adapter->itr
2283 * @packets: the number of packets during this measurement interval
2284 * @bytes: the number of bytes during this measurement interval
2286 static unsigned int igb_update_itr(struct igb_adapter
*adapter
, u16 itr_setting
,
2287 int packets
, int bytes
)
2289 unsigned int retval
= itr_setting
;
2292 goto update_itr_done
;
2294 switch (itr_setting
) {
2295 case lowest_latency
:
2296 /* handle TSO and jumbo frames */
2297 if (bytes
/packets
> 8000)
2298 retval
= bulk_latency
;
2299 else if ((packets
< 5) && (bytes
> 512))
2300 retval
= low_latency
;
2302 case low_latency
: /* 50 usec aka 20000 ints/s */
2303 if (bytes
> 10000) {
2304 /* this if handles the TSO accounting */
2305 if (bytes
/packets
> 8000) {
2306 retval
= bulk_latency
;
2307 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
2308 retval
= bulk_latency
;
2309 } else if ((packets
> 35)) {
2310 retval
= lowest_latency
;
2312 } else if (bytes
/packets
> 2000) {
2313 retval
= bulk_latency
;
2314 } else if (packets
<= 2 && bytes
< 512) {
2315 retval
= lowest_latency
;
2318 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2319 if (bytes
> 25000) {
2321 retval
= low_latency
;
2322 } else if (bytes
< 6000) {
2323 retval
= low_latency
;
2332 static void igb_set_itr(struct igb_adapter
*adapter
, u16 itr_register
,
2336 u32 new_itr
= adapter
->itr
;
2338 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2339 if (adapter
->link_speed
!= SPEED_1000
) {
2345 adapter
->rx_itr
= igb_update_itr(adapter
,
2347 adapter
->rx_ring
->total_packets
,
2348 adapter
->rx_ring
->total_bytes
);
2349 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2350 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2351 adapter
->rx_itr
= low_latency
;
2354 adapter
->tx_itr
= igb_update_itr(adapter
,
2356 adapter
->tx_ring
->total_packets
,
2357 adapter
->tx_ring
->total_bytes
);
2358 /* conservative mode (itr 3) eliminates the
2359 * lowest_latency setting */
2360 if (adapter
->itr_setting
== 3 &&
2361 adapter
->tx_itr
== lowest_latency
)
2362 adapter
->tx_itr
= low_latency
;
2364 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2366 current_itr
= adapter
->rx_itr
;
2369 switch (current_itr
) {
2370 /* counts and packets in update_itr are dependent on these numbers */
2371 case lowest_latency
:
2375 new_itr
= 20000; /* aka hwitr = ~200 */
2385 if (new_itr
!= adapter
->itr
) {
2386 /* this attempts to bias the interrupt rate towards Bulk
2387 * by adding intermediate steps when interrupt rate is
2389 new_itr
= new_itr
> adapter
->itr
?
2390 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2392 /* Don't write the value here; it resets the adapter's
2393 * internal timer, and causes us to delay far longer than
2394 * we should between interrupts. Instead, we write the ITR
2395 * value at the beginning of the next interrupt so the timing
2396 * ends up being correct.
2398 adapter
->itr
= new_itr
;
2399 adapter
->set_itr
= 1;
2406 #define IGB_TX_FLAGS_CSUM 0x00000001
2407 #define IGB_TX_FLAGS_VLAN 0x00000002
2408 #define IGB_TX_FLAGS_TSO 0x00000004
2409 #define IGB_TX_FLAGS_IPV4 0x00000008
2410 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
2411 #define IGB_TX_FLAGS_VLAN_SHIFT 16
2413 static inline int igb_tso_adv(struct igb_adapter
*adapter
,
2414 struct igb_ring
*tx_ring
,
2415 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2417 struct e1000_adv_tx_context_desc
*context_desc
;
2420 struct igb_buffer
*buffer_info
;
2421 u32 info
= 0, tu_cmd
= 0;
2422 u32 mss_l4len_idx
, l4len
;
2425 if (skb_header_cloned(skb
)) {
2426 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2431 l4len
= tcp_hdrlen(skb
);
2434 if (skb
->protocol
== htons(ETH_P_IP
)) {
2435 struct iphdr
*iph
= ip_hdr(skb
);
2438 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2442 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
2443 ipv6_hdr(skb
)->payload_len
= 0;
2444 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2445 &ipv6_hdr(skb
)->daddr
,
2449 i
= tx_ring
->next_to_use
;
2451 buffer_info
= &tx_ring
->buffer_info
[i
];
2452 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2453 /* VLAN MACLEN IPLEN */
2454 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2455 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2456 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2457 *hdr_len
+= skb_network_offset(skb
);
2458 info
|= skb_network_header_len(skb
);
2459 *hdr_len
+= skb_network_header_len(skb
);
2460 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2462 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2463 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2465 if (skb
->protocol
== htons(ETH_P_IP
))
2466 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2467 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2469 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2472 mss_l4len_idx
= (skb_shinfo(skb
)->gso_size
<< E1000_ADVTXD_MSS_SHIFT
);
2473 mss_l4len_idx
|= (l4len
<< E1000_ADVTXD_L4LEN_SHIFT
);
2475 /* Context index must be unique per ring. Luckily, so is the interrupt
2477 mss_l4len_idx
|= tx_ring
->eims_value
>> 4;
2479 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2480 context_desc
->seqnum_seed
= 0;
2482 buffer_info
->time_stamp
= jiffies
;
2483 buffer_info
->dma
= 0;
2485 if (i
== tx_ring
->count
)
2488 tx_ring
->next_to_use
= i
;
2493 static inline bool igb_tx_csum_adv(struct igb_adapter
*adapter
,
2494 struct igb_ring
*tx_ring
,
2495 struct sk_buff
*skb
, u32 tx_flags
)
2497 struct e1000_adv_tx_context_desc
*context_desc
;
2499 struct igb_buffer
*buffer_info
;
2500 u32 info
= 0, tu_cmd
= 0;
2502 if ((skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
2503 (tx_flags
& IGB_TX_FLAGS_VLAN
)) {
2504 i
= tx_ring
->next_to_use
;
2505 buffer_info
= &tx_ring
->buffer_info
[i
];
2506 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2508 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2509 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2510 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2511 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2512 info
|= skb_network_header_len(skb
);
2514 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2516 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2518 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
2519 switch (skb
->protocol
) {
2520 case __constant_htons(ETH_P_IP
):
2521 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2522 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2523 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2525 case __constant_htons(ETH_P_IPV6
):
2526 /* XXX what about other V6 headers?? */
2527 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2528 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2531 if (unlikely(net_ratelimit()))
2532 dev_warn(&adapter
->pdev
->dev
,
2533 "partial checksum but proto=%x!\n",
2539 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2540 context_desc
->seqnum_seed
= 0;
2541 context_desc
->mss_l4len_idx
=
2542 cpu_to_le32(tx_ring
->eims_value
>> 4);
2544 buffer_info
->time_stamp
= jiffies
;
2545 buffer_info
->dma
= 0;
2548 if (i
== tx_ring
->count
)
2550 tx_ring
->next_to_use
= i
;
2559 #define IGB_MAX_TXD_PWR 16
2560 #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR)
2562 static inline int igb_tx_map_adv(struct igb_adapter
*adapter
,
2563 struct igb_ring
*tx_ring
,
2564 struct sk_buff
*skb
)
2566 struct igb_buffer
*buffer_info
;
2567 unsigned int len
= skb_headlen(skb
);
2568 unsigned int count
= 0, i
;
2571 i
= tx_ring
->next_to_use
;
2573 buffer_info
= &tx_ring
->buffer_info
[i
];
2574 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
2575 buffer_info
->length
= len
;
2576 /* set time_stamp *before* dma to help avoid a possible race */
2577 buffer_info
->time_stamp
= jiffies
;
2578 buffer_info
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, len
,
2582 if (i
== tx_ring
->count
)
2585 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++) {
2586 struct skb_frag_struct
*frag
;
2588 frag
= &skb_shinfo(skb
)->frags
[f
];
2591 buffer_info
= &tx_ring
->buffer_info
[i
];
2592 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
2593 buffer_info
->length
= len
;
2594 buffer_info
->time_stamp
= jiffies
;
2595 buffer_info
->dma
= pci_map_page(adapter
->pdev
,
2603 if (i
== tx_ring
->count
)
2607 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2608 tx_ring
->buffer_info
[i
].skb
= skb
;
2613 static inline void igb_tx_queue_adv(struct igb_adapter
*adapter
,
2614 struct igb_ring
*tx_ring
,
2615 int tx_flags
, int count
, u32 paylen
,
2618 union e1000_adv_tx_desc
*tx_desc
= NULL
;
2619 struct igb_buffer
*buffer_info
;
2620 u32 olinfo_status
= 0, cmd_type_len
;
2623 cmd_type_len
= (E1000_ADVTXD_DTYP_DATA
| E1000_ADVTXD_DCMD_IFCS
|
2624 E1000_ADVTXD_DCMD_DEXT
);
2626 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2627 cmd_type_len
|= E1000_ADVTXD_DCMD_VLE
;
2629 if (tx_flags
& IGB_TX_FLAGS_TSO
) {
2630 cmd_type_len
|= E1000_ADVTXD_DCMD_TSE
;
2632 /* insert tcp checksum */
2633 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2635 /* insert ip checksum */
2636 if (tx_flags
& IGB_TX_FLAGS_IPV4
)
2637 olinfo_status
|= E1000_TXD_POPTS_IXSM
<< 8;
2639 } else if (tx_flags
& IGB_TX_FLAGS_CSUM
) {
2640 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
2643 if (tx_flags
& (IGB_TX_FLAGS_CSUM
| IGB_TX_FLAGS_TSO
|
2645 olinfo_status
|= tx_ring
->eims_value
>> 4;
2647 olinfo_status
|= ((paylen
- hdr_len
) << E1000_ADVTXD_PAYLEN_SHIFT
);
2649 i
= tx_ring
->next_to_use
;
2651 buffer_info
= &tx_ring
->buffer_info
[i
];
2652 tx_desc
= E1000_TX_DESC_ADV(*tx_ring
, i
);
2653 tx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2654 tx_desc
->read
.cmd_type_len
=
2655 cpu_to_le32(cmd_type_len
| buffer_info
->length
);
2656 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
2658 if (i
== tx_ring
->count
)
2662 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(adapter
->txd_cmd
);
2663 /* Force memory writes to complete before letting h/w
2664 * know there are new descriptors to fetch. (Only
2665 * applicable for weak-ordered memory model archs,
2666 * such as IA-64). */
2669 tx_ring
->next_to_use
= i
;
2670 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2671 /* we need this if more than one processor can write to our tail
2672 * at a time, it syncronizes IO on IA64/Altix systems */
2676 static int __igb_maybe_stop_tx(struct net_device
*netdev
,
2677 struct igb_ring
*tx_ring
, int size
)
2679 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2681 netif_stop_queue(netdev
);
2682 /* Herbert's original patch had:
2683 * smp_mb__after_netif_stop_queue();
2684 * but since that doesn't exist yet, just open code it. */
2687 /* We need to check again in a case another CPU has just
2688 * made room available. */
2689 if (IGB_DESC_UNUSED(tx_ring
) < size
)
2693 netif_start_queue(netdev
);
2694 ++adapter
->restart_queue
;
2698 static int igb_maybe_stop_tx(struct net_device
*netdev
,
2699 struct igb_ring
*tx_ring
, int size
)
2701 if (IGB_DESC_UNUSED(tx_ring
) >= size
)
2703 return __igb_maybe_stop_tx(netdev
, tx_ring
, size
);
2706 #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1)
2708 static int igb_xmit_frame_ring_adv(struct sk_buff
*skb
,
2709 struct net_device
*netdev
,
2710 struct igb_ring
*tx_ring
)
2712 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2713 unsigned int tx_flags
= 0;
2715 unsigned long irq_flags
;
2719 len
= skb_headlen(skb
);
2721 if (test_bit(__IGB_DOWN
, &adapter
->state
)) {
2722 dev_kfree_skb_any(skb
);
2723 return NETDEV_TX_OK
;
2726 if (skb
->len
<= 0) {
2727 dev_kfree_skb_any(skb
);
2728 return NETDEV_TX_OK
;
2731 if (!spin_trylock_irqsave(&tx_ring
->tx_lock
, irq_flags
))
2732 /* Collision - tell upper layer to requeue */
2733 return NETDEV_TX_LOCKED
;
2735 /* need: 1 descriptor per page,
2736 * + 2 desc gap to keep tail from touching head,
2737 * + 1 desc for skb->data,
2738 * + 1 desc for context descriptor,
2739 * otherwise try next time */
2740 if (igb_maybe_stop_tx(netdev
, tx_ring
, skb_shinfo(skb
)->nr_frags
+ 4)) {
2741 /* this is a hard error */
2742 spin_unlock_irqrestore(&tx_ring
->tx_lock
, irq_flags
);
2743 return NETDEV_TX_BUSY
;
2746 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
2747 tx_flags
|= IGB_TX_FLAGS_VLAN
;
2748 tx_flags
|= (vlan_tx_tag_get(skb
) << IGB_TX_FLAGS_VLAN_SHIFT
);
2751 tso
= skb_is_gso(skb
) ? igb_tso_adv(adapter
, tx_ring
, skb
, tx_flags
,
2755 dev_kfree_skb_any(skb
);
2756 spin_unlock_irqrestore(&tx_ring
->tx_lock
, irq_flags
);
2757 return NETDEV_TX_OK
;
2761 tx_flags
|= IGB_TX_FLAGS_TSO
;
2762 else if (igb_tx_csum_adv(adapter
, tx_ring
, skb
, tx_flags
))
2763 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2764 tx_flags
|= IGB_TX_FLAGS_CSUM
;
2766 if (skb
->protocol
== htons(ETH_P_IP
))
2767 tx_flags
|= IGB_TX_FLAGS_IPV4
;
2769 igb_tx_queue_adv(adapter
, tx_ring
, tx_flags
,
2770 igb_tx_map_adv(adapter
, tx_ring
, skb
),
2773 netdev
->trans_start
= jiffies
;
2775 /* Make sure there is space in the ring for the next send. */
2776 igb_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 4);
2778 spin_unlock_irqrestore(&tx_ring
->tx_lock
, irq_flags
);
2779 return NETDEV_TX_OK
;
2782 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*netdev
)
2784 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2785 struct igb_ring
*tx_ring
= &adapter
->tx_ring
[0];
2787 /* This goes back to the question of how to logically map a tx queue
2788 * to a flow. Right now, performance is impacted slightly negatively
2789 * if using multiple tx queues. If the stack breaks away from a
2790 * single qdisc implementation, we can look at this again. */
2791 return (igb_xmit_frame_ring_adv(skb
, netdev
, tx_ring
));
2795 * igb_tx_timeout - Respond to a Tx Hang
2796 * @netdev: network interface device structure
2798 static void igb_tx_timeout(struct net_device
*netdev
)
2800 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2801 struct e1000_hw
*hw
= &adapter
->hw
;
2803 /* Do the reset outside of interrupt context */
2804 adapter
->tx_timeout_count
++;
2805 schedule_work(&adapter
->reset_task
);
2806 wr32(E1000_EICS
, adapter
->eims_enable_mask
&
2807 ~(E1000_EIMS_TCP_TIMER
| E1000_EIMS_OTHER
));
2810 static void igb_reset_task(struct work_struct
*work
)
2812 struct igb_adapter
*adapter
;
2813 adapter
= container_of(work
, struct igb_adapter
, reset_task
);
2815 igb_reinit_locked(adapter
);
2819 * igb_get_stats - Get System Network Statistics
2820 * @netdev: network interface device structure
2822 * Returns the address of the device statistics structure.
2823 * The statistics are actually updated from the timer callback.
2825 static struct net_device_stats
*
2826 igb_get_stats(struct net_device
*netdev
)
2828 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2830 /* only return the current stats */
2831 return &adapter
->net_stats
;
2835 * igb_change_mtu - Change the Maximum Transfer Unit
2836 * @netdev: network interface device structure
2837 * @new_mtu: new value for maximum frame size
2839 * Returns 0 on success, negative on failure
2841 static int igb_change_mtu(struct net_device
*netdev
, int new_mtu
)
2843 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2844 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2846 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
2847 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2848 dev_err(&adapter
->pdev
->dev
, "Invalid MTU setting\n");
2852 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2853 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2854 dev_err(&adapter
->pdev
->dev
, "MTU > 9216 not supported.\n");
2858 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
2860 /* igb_down has a dependency on max_frame_size */
2861 adapter
->max_frame_size
= max_frame
;
2862 if (netif_running(netdev
))
2865 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
2866 * means we reserve 2 more, this pushes us to allocate from the next
2868 * i.e. RXBUFFER_2048 --> size-4096 slab
2871 if (max_frame
<= IGB_RXBUFFER_256
)
2872 adapter
->rx_buffer_len
= IGB_RXBUFFER_256
;
2873 else if (max_frame
<= IGB_RXBUFFER_512
)
2874 adapter
->rx_buffer_len
= IGB_RXBUFFER_512
;
2875 else if (max_frame
<= IGB_RXBUFFER_1024
)
2876 adapter
->rx_buffer_len
= IGB_RXBUFFER_1024
;
2877 else if (max_frame
<= IGB_RXBUFFER_2048
)
2878 adapter
->rx_buffer_len
= IGB_RXBUFFER_2048
;
2880 adapter
->rx_buffer_len
= IGB_RXBUFFER_4096
;
2881 /* adjust allocation if LPE protects us, and we aren't using SBP */
2882 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
2883 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
))
2884 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
2886 dev_info(&adapter
->pdev
->dev
, "changing MTU from %d to %d\n",
2887 netdev
->mtu
, new_mtu
);
2888 netdev
->mtu
= new_mtu
;
2890 if (netif_running(netdev
))
2895 clear_bit(__IGB_RESETTING
, &adapter
->state
);
2901 * igb_update_stats - Update the board statistics counters
2902 * @adapter: board private structure
2905 void igb_update_stats(struct igb_adapter
*adapter
)
2907 struct e1000_hw
*hw
= &adapter
->hw
;
2908 struct pci_dev
*pdev
= adapter
->pdev
;
2911 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2914 * Prevent stats update while adapter is being reset, or if the pci
2915 * connection is down.
2917 if (adapter
->link_speed
== 0)
2919 if (pci_channel_offline(pdev
))
2922 adapter
->stats
.crcerrs
+= rd32(E1000_CRCERRS
);
2923 adapter
->stats
.gprc
+= rd32(E1000_GPRC
);
2924 adapter
->stats
.gorc
+= rd32(E1000_GORCL
);
2925 rd32(E1000_GORCH
); /* clear GORCL */
2926 adapter
->stats
.bprc
+= rd32(E1000_BPRC
);
2927 adapter
->stats
.mprc
+= rd32(E1000_MPRC
);
2928 adapter
->stats
.roc
+= rd32(E1000_ROC
);
2930 adapter
->stats
.prc64
+= rd32(E1000_PRC64
);
2931 adapter
->stats
.prc127
+= rd32(E1000_PRC127
);
2932 adapter
->stats
.prc255
+= rd32(E1000_PRC255
);
2933 adapter
->stats
.prc511
+= rd32(E1000_PRC511
);
2934 adapter
->stats
.prc1023
+= rd32(E1000_PRC1023
);
2935 adapter
->stats
.prc1522
+= rd32(E1000_PRC1522
);
2936 adapter
->stats
.symerrs
+= rd32(E1000_SYMERRS
);
2937 adapter
->stats
.sec
+= rd32(E1000_SEC
);
2939 adapter
->stats
.mpc
+= rd32(E1000_MPC
);
2940 adapter
->stats
.scc
+= rd32(E1000_SCC
);
2941 adapter
->stats
.ecol
+= rd32(E1000_ECOL
);
2942 adapter
->stats
.mcc
+= rd32(E1000_MCC
);
2943 adapter
->stats
.latecol
+= rd32(E1000_LATECOL
);
2944 adapter
->stats
.dc
+= rd32(E1000_DC
);
2945 adapter
->stats
.rlec
+= rd32(E1000_RLEC
);
2946 adapter
->stats
.xonrxc
+= rd32(E1000_XONRXC
);
2947 adapter
->stats
.xontxc
+= rd32(E1000_XONTXC
);
2948 adapter
->stats
.xoffrxc
+= rd32(E1000_XOFFRXC
);
2949 adapter
->stats
.xofftxc
+= rd32(E1000_XOFFTXC
);
2950 adapter
->stats
.fcruc
+= rd32(E1000_FCRUC
);
2951 adapter
->stats
.gptc
+= rd32(E1000_GPTC
);
2952 adapter
->stats
.gotc
+= rd32(E1000_GOTCL
);
2953 rd32(E1000_GOTCH
); /* clear GOTCL */
2954 adapter
->stats
.rnbc
+= rd32(E1000_RNBC
);
2955 adapter
->stats
.ruc
+= rd32(E1000_RUC
);
2956 adapter
->stats
.rfc
+= rd32(E1000_RFC
);
2957 adapter
->stats
.rjc
+= rd32(E1000_RJC
);
2958 adapter
->stats
.tor
+= rd32(E1000_TORH
);
2959 adapter
->stats
.tot
+= rd32(E1000_TOTH
);
2960 adapter
->stats
.tpr
+= rd32(E1000_TPR
);
2962 adapter
->stats
.ptc64
+= rd32(E1000_PTC64
);
2963 adapter
->stats
.ptc127
+= rd32(E1000_PTC127
);
2964 adapter
->stats
.ptc255
+= rd32(E1000_PTC255
);
2965 adapter
->stats
.ptc511
+= rd32(E1000_PTC511
);
2966 adapter
->stats
.ptc1023
+= rd32(E1000_PTC1023
);
2967 adapter
->stats
.ptc1522
+= rd32(E1000_PTC1522
);
2969 adapter
->stats
.mptc
+= rd32(E1000_MPTC
);
2970 adapter
->stats
.bptc
+= rd32(E1000_BPTC
);
2972 /* used for adaptive IFS */
2974 hw
->mac
.tx_packet_delta
= rd32(E1000_TPT
);
2975 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
2976 hw
->mac
.collision_delta
= rd32(E1000_COLC
);
2977 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
2979 adapter
->stats
.algnerrc
+= rd32(E1000_ALGNERRC
);
2980 adapter
->stats
.rxerrc
+= rd32(E1000_RXERRC
);
2981 adapter
->stats
.tncrs
+= rd32(E1000_TNCRS
);
2982 adapter
->stats
.tsctc
+= rd32(E1000_TSCTC
);
2983 adapter
->stats
.tsctfc
+= rd32(E1000_TSCTFC
);
2985 adapter
->stats
.iac
+= rd32(E1000_IAC
);
2986 adapter
->stats
.icrxoc
+= rd32(E1000_ICRXOC
);
2987 adapter
->stats
.icrxptc
+= rd32(E1000_ICRXPTC
);
2988 adapter
->stats
.icrxatc
+= rd32(E1000_ICRXATC
);
2989 adapter
->stats
.ictxptc
+= rd32(E1000_ICTXPTC
);
2990 adapter
->stats
.ictxatc
+= rd32(E1000_ICTXATC
);
2991 adapter
->stats
.ictxqec
+= rd32(E1000_ICTXQEC
);
2992 adapter
->stats
.ictxqmtc
+= rd32(E1000_ICTXQMTC
);
2993 adapter
->stats
.icrxdmtc
+= rd32(E1000_ICRXDMTC
);
2995 /* Fill out the OS statistics structure */
2996 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
2997 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3001 /* RLEC on some newer hardware can be incorrect so build
3002 * our own version based on RUC and ROC */
3003 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3004 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3005 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3006 adapter
->stats
.cexterr
;
3007 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3009 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3010 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3011 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3014 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3015 adapter
->stats
.latecol
;
3016 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3017 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3018 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3020 /* Tx Dropped needs to be maintained elsewhere */
3023 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
3024 if ((adapter
->link_speed
== SPEED_1000
) &&
3025 (!hw
->phy
.ops
.read_phy_reg(hw
, PHY_1000T_STATUS
,
3027 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3028 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3032 /* Management Stats */
3033 adapter
->stats
.mgptc
+= rd32(E1000_MGTPTC
);
3034 adapter
->stats
.mgprc
+= rd32(E1000_MGTPRC
);
3035 adapter
->stats
.mgpdc
+= rd32(E1000_MGTPDC
);
3039 static irqreturn_t
igb_msix_other(int irq
, void *data
)
3041 struct net_device
*netdev
= data
;
3042 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3043 struct e1000_hw
*hw
= &adapter
->hw
;
3045 /* disable interrupts from the "other" bit, avoid re-entry */
3046 wr32(E1000_EIMC
, E1000_EIMS_OTHER
);
3048 eicr
= rd32(E1000_EICR
);
3050 if (eicr
& E1000_EIMS_OTHER
) {
3051 u32 icr
= rd32(E1000_ICR
);
3052 /* reading ICR causes bit 31 of EICR to be cleared */
3053 if (!(icr
& E1000_ICR_LSC
))
3054 goto no_link_interrupt
;
3055 hw
->mac
.get_link_status
= 1;
3056 /* guard against interrupt when we're going down */
3057 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3058 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3062 wr32(E1000_IMS
, E1000_IMS_LSC
);
3063 wr32(E1000_EIMS
, E1000_EIMS_OTHER
);
3068 static irqreturn_t
igb_msix_tx(int irq
, void *data
)
3070 struct igb_ring
*tx_ring
= data
;
3071 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3072 struct e1000_hw
*hw
= &adapter
->hw
;
3074 if (!tx_ring
->itr_val
)
3075 wr32(E1000_EIMC
, tx_ring
->eims_value
);
3077 tx_ring
->total_bytes
= 0;
3078 tx_ring
->total_packets
= 0;
3079 if (!igb_clean_tx_irq(adapter
, tx_ring
))
3080 /* Ring was not completely cleaned, so fire another interrupt */
3081 wr32(E1000_EICS
, tx_ring
->eims_value
);
3083 if (!tx_ring
->itr_val
)
3084 wr32(E1000_EIMS
, tx_ring
->eims_value
);
3088 static irqreturn_t
igb_msix_rx(int irq
, void *data
)
3090 struct igb_ring
*rx_ring
= data
;
3091 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3092 struct e1000_hw
*hw
= &adapter
->hw
;
3094 if (!rx_ring
->itr_val
)
3095 wr32(E1000_EIMC
, rx_ring
->eims_value
);
3097 if (netif_rx_schedule_prep(adapter
->netdev
, &rx_ring
->napi
)) {
3098 rx_ring
->total_bytes
= 0;
3099 rx_ring
->total_packets
= 0;
3100 rx_ring
->no_itr_adjust
= 0;
3101 __netif_rx_schedule(adapter
->netdev
, &rx_ring
->napi
);
3103 if (!rx_ring
->no_itr_adjust
) {
3104 igb_lower_rx_eitr(adapter
, rx_ring
);
3105 rx_ring
->no_itr_adjust
= 1;
3114 * igb_intr_msi - Interrupt Handler
3115 * @irq: interrupt number
3116 * @data: pointer to a network interface device structure
3118 static irqreturn_t
igb_intr_msi(int irq
, void *data
)
3120 struct net_device
*netdev
= data
;
3121 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3122 struct napi_struct
*napi
= &adapter
->napi
;
3123 struct e1000_hw
*hw
= &adapter
->hw
;
3124 /* read ICR disables interrupts using IAM */
3125 u32 icr
= rd32(E1000_ICR
);
3127 /* Write the ITR value calculated at the end of the
3128 * previous interrupt.
3130 if (adapter
->set_itr
) {
3132 1000000000 / (adapter
->itr
* 256));
3133 adapter
->set_itr
= 0;
3136 /* read ICR disables interrupts using IAM */
3137 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3138 hw
->mac
.get_link_status
= 1;
3139 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3140 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3143 if (netif_rx_schedule_prep(netdev
, napi
)) {
3144 adapter
->tx_ring
->total_bytes
= 0;
3145 adapter
->tx_ring
->total_packets
= 0;
3146 adapter
->rx_ring
->total_bytes
= 0;
3147 adapter
->rx_ring
->total_packets
= 0;
3148 __netif_rx_schedule(netdev
, napi
);
3155 * igb_intr - Interrupt Handler
3156 * @irq: interrupt number
3157 * @data: pointer to a network interface device structure
3159 static irqreturn_t
igb_intr(int irq
, void *data
)
3161 struct net_device
*netdev
= data
;
3162 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3163 struct napi_struct
*napi
= &adapter
->napi
;
3164 struct e1000_hw
*hw
= &adapter
->hw
;
3165 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3166 * need for the IMC write */
3167 u32 icr
= rd32(E1000_ICR
);
3170 return IRQ_NONE
; /* Not our interrupt */
3172 /* Write the ITR value calculated at the end of the
3173 * previous interrupt.
3175 if (adapter
->set_itr
) {
3177 1000000000 / (adapter
->itr
* 256));
3178 adapter
->set_itr
= 0;
3181 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3182 * not set, then the adapter didn't send an interrupt */
3183 if (!(icr
& E1000_ICR_INT_ASSERTED
))
3186 eicr
= rd32(E1000_EICR
);
3188 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3189 hw
->mac
.get_link_status
= 1;
3190 /* guard against interrupt when we're going down */
3191 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3192 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3195 if (netif_rx_schedule_prep(netdev
, napi
)) {
3196 adapter
->tx_ring
->total_bytes
= 0;
3197 adapter
->rx_ring
->total_bytes
= 0;
3198 adapter
->tx_ring
->total_packets
= 0;
3199 adapter
->rx_ring
->total_packets
= 0;
3200 __netif_rx_schedule(netdev
, napi
);
3207 * igb_clean - NAPI Rx polling callback
3208 * @adapter: board private structure
3210 static int igb_clean(struct napi_struct
*napi
, int budget
)
3212 struct igb_adapter
*adapter
= container_of(napi
, struct igb_adapter
,
3214 struct net_device
*netdev
= adapter
->netdev
;
3215 int tx_clean_complete
= 1, work_done
= 0;
3218 /* Must NOT use netdev_priv macro here. */
3219 adapter
= netdev
->priv
;
3221 /* Keep link state information with original netdev */
3222 if (!netif_carrier_ok(netdev
))
3225 /* igb_clean is called per-cpu. This lock protects tx_ring[i] from
3226 * being cleaned by multiple cpus simultaneously. A failure obtaining
3227 * the lock means tx_ring[i] is currently being cleaned anyway. */
3228 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3229 if (spin_trylock(&adapter
->tx_ring
[i
].tx_clean_lock
)) {
3230 tx_clean_complete
&= igb_clean_tx_irq(adapter
,
3231 &adapter
->tx_ring
[i
]);
3232 spin_unlock(&adapter
->tx_ring
[i
].tx_clean_lock
);
3236 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3237 igb_clean_rx_irq_adv(adapter
, &adapter
->rx_ring
[i
], &work_done
,
3238 adapter
->rx_ring
[i
].napi
.weight
);
3240 /* If no Tx and not enough Rx work done, exit the polling mode */
3241 if ((tx_clean_complete
&& (work_done
< budget
)) ||
3242 !netif_running(netdev
)) {
3244 if (adapter
->itr_setting
& 3)
3245 igb_set_itr(adapter
, E1000_ITR
, false);
3246 netif_rx_complete(netdev
, napi
);
3247 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3248 igb_irq_enable(adapter
);
3255 static int igb_clean_rx_ring_msix(struct napi_struct
*napi
, int budget
)
3257 struct igb_ring
*rx_ring
= container_of(napi
, struct igb_ring
, napi
);
3258 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3259 struct e1000_hw
*hw
= &adapter
->hw
;
3260 struct net_device
*netdev
= adapter
->netdev
;
3263 /* Keep link state information with original netdev */
3264 if (!netif_carrier_ok(netdev
))
3267 igb_clean_rx_irq_adv(adapter
, rx_ring
, &work_done
, budget
);
3270 /* If not enough Rx work done, exit the polling mode */
3271 if ((work_done
== 0) || !netif_running(netdev
)) {
3273 netif_rx_complete(netdev
, napi
);
3275 wr32(E1000_EIMS
, rx_ring
->eims_value
);
3276 if ((adapter
->itr_setting
& 3) && !rx_ring
->no_itr_adjust
&&
3277 (rx_ring
->total_packets
> IGB_DYN_ITR_PACKET_THRESHOLD
)) {
3278 int mean_size
= rx_ring
->total_bytes
/
3279 rx_ring
->total_packets
;
3280 if (mean_size
< IGB_DYN_ITR_LENGTH_LOW
)
3281 igb_raise_rx_eitr(adapter
, rx_ring
);
3282 else if (mean_size
> IGB_DYN_ITR_LENGTH_HIGH
)
3283 igb_lower_rx_eitr(adapter
, rx_ring
);
3291 static inline u32
get_head(struct igb_ring
*tx_ring
)
3293 void *end
= (struct e1000_tx_desc
*)tx_ring
->desc
+ tx_ring
->count
;
3294 return le32_to_cpu(*(volatile __le32
*)end
);
3298 * igb_clean_tx_irq - Reclaim resources after transmit completes
3299 * @adapter: board private structure
3300 * returns true if ring is completely cleaned
3302 static bool igb_clean_tx_irq(struct igb_adapter
*adapter
,
3303 struct igb_ring
*tx_ring
)
3305 struct net_device
*netdev
= adapter
->netdev
;
3306 struct e1000_hw
*hw
= &adapter
->hw
;
3307 struct e1000_tx_desc
*tx_desc
;
3308 struct igb_buffer
*buffer_info
;
3309 struct sk_buff
*skb
;
3312 unsigned int count
= 0;
3313 bool cleaned
= false;
3315 unsigned int total_bytes
= 0, total_packets
= 0;
3318 head
= get_head(tx_ring
);
3319 i
= tx_ring
->next_to_clean
;
3323 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3324 buffer_info
= &tx_ring
->buffer_info
[i
];
3325 skb
= buffer_info
->skb
;
3328 unsigned int segs
, bytecount
;
3329 /* gso_segs is currently only valid for tcp */
3330 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3331 /* multiply data chunks by size of headers */
3332 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3334 total_packets
+= segs
;
3335 total_bytes
+= bytecount
;
3338 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
3339 tx_desc
->upper
.data
= 0;
3342 if (i
== tx_ring
->count
)
3346 if (count
== IGB_MAX_TX_CLEAN
) {
3353 head
= get_head(tx_ring
);
3354 if (head
== oldhead
)
3359 tx_ring
->next_to_clean
= i
;
3361 if (unlikely(cleaned
&&
3362 netif_carrier_ok(netdev
) &&
3363 IGB_DESC_UNUSED(tx_ring
) >= IGB_TX_QUEUE_WAKE
)) {
3364 /* Make sure that anybody stopping the queue after this
3365 * sees the new next_to_clean.
3368 if (netif_queue_stopped(netdev
) &&
3369 !(test_bit(__IGB_DOWN
, &adapter
->state
))) {
3370 netif_wake_queue(netdev
);
3371 ++adapter
->restart_queue
;
3375 if (tx_ring
->detect_tx_hung
) {
3376 /* Detect a transmit hang in hardware, this serializes the
3377 * check with the clearing of time_stamp and movement of i */
3378 tx_ring
->detect_tx_hung
= false;
3379 if (tx_ring
->buffer_info
[i
].time_stamp
&&
3380 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+
3381 (adapter
->tx_timeout_factor
* HZ
))
3382 && !(rd32(E1000_STATUS
) &
3383 E1000_STATUS_TXOFF
)) {
3385 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3386 /* detected Tx unit hang */
3387 dev_err(&adapter
->pdev
->dev
,
3388 "Detected Tx Unit Hang\n"
3392 " next_to_use <%x>\n"
3393 " next_to_clean <%x>\n"
3395 "buffer_info[next_to_clean]\n"
3396 " time_stamp <%lx>\n"
3398 " desc.status <%x>\n",
3399 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3400 sizeof(struct igb_ring
)),
3401 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
3402 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
3403 tx_ring
->next_to_use
,
3404 tx_ring
->next_to_clean
,
3406 tx_ring
->buffer_info
[i
].time_stamp
,
3408 tx_desc
->upper
.fields
.status
);
3409 netif_stop_queue(netdev
);
3412 tx_ring
->total_bytes
+= total_bytes
;
3413 tx_ring
->total_packets
+= total_packets
;
3414 adapter
->net_stats
.tx_bytes
+= total_bytes
;
3415 adapter
->net_stats
.tx_packets
+= total_packets
;
3421 * igb_receive_skb - helper function to handle rx indications
3422 * @adapter: board private structure
3423 * @status: descriptor status field as written by hardware
3424 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
3425 * @skb: pointer to sk_buff to be indicated to stack
3427 static void igb_receive_skb(struct igb_adapter
*adapter
, u8 status
, __le16 vlan
,
3428 struct sk_buff
*skb
)
3430 if (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
))
3431 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3433 E1000_RXD_SPC_VLAN_MASK
);
3435 netif_receive_skb(skb
);
3439 static inline void igb_rx_checksum_adv(struct igb_adapter
*adapter
,
3440 u32 status_err
, struct sk_buff
*skb
)
3442 skb
->ip_summed
= CHECKSUM_NONE
;
3444 /* Ignore Checksum bit is set or checksum is disabled through ethtool */
3445 if ((status_err
& E1000_RXD_STAT_IXSM
) || !adapter
->rx_csum
)
3447 /* TCP/UDP checksum error bit is set */
3449 (E1000_RXDEXT_STATERR_TCPE
| E1000_RXDEXT_STATERR_IPE
)) {
3450 /* let the stack verify checksum errors */
3451 adapter
->hw_csum_err
++;
3454 /* It must be a TCP or UDP packet with a valid checksum */
3455 if (status_err
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
))
3456 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3458 adapter
->hw_csum_good
++;
3461 static bool igb_clean_rx_irq_adv(struct igb_adapter
*adapter
,
3462 struct igb_ring
*rx_ring
,
3463 int *work_done
, int budget
)
3465 struct net_device
*netdev
= adapter
->netdev
;
3466 struct pci_dev
*pdev
= adapter
->pdev
;
3467 union e1000_adv_rx_desc
*rx_desc
, *next_rxd
;
3468 struct igb_buffer
*buffer_info
, *next_buffer
;
3469 struct sk_buff
*skb
;
3471 u32 length
, hlen
, staterr
;
3472 bool cleaned
= false;
3473 int cleaned_count
= 0;
3474 unsigned int total_bytes
= 0, total_packets
= 0;
3476 i
= rx_ring
->next_to_clean
;
3477 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3478 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3480 while (staterr
& E1000_RXD_STAT_DD
) {
3481 if (*work_done
>= budget
)
3484 buffer_info
= &rx_ring
->buffer_info
[i
];
3486 /* HW will not DMA in data larger than the given buffer, even
3487 * if it parses the (NFS, of course) header to be larger. In
3488 * that case, it fills the header buffer and spills the rest
3491 hlen
= (le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hdr_info
) &
3492 E1000_RXDADV_HDRBUFLEN_MASK
) >> E1000_RXDADV_HDRBUFLEN_SHIFT
;
3493 if (hlen
> adapter
->rx_ps_hdr_size
)
3494 hlen
= adapter
->rx_ps_hdr_size
;
3496 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
3500 if (rx_ring
->pending_skb
!= NULL
) {
3501 skb
= rx_ring
->pending_skb
;
3502 rx_ring
->pending_skb
= NULL
;
3503 j
= rx_ring
->pending_skb_page
;
3505 skb
= buffer_info
->skb
;
3506 prefetch(skb
->data
- NET_IP_ALIGN
);
3507 buffer_info
->skb
= NULL
;
3509 pci_unmap_single(pdev
, buffer_info
->dma
,
3510 adapter
->rx_ps_hdr_size
+
3512 PCI_DMA_FROMDEVICE
);
3515 pci_unmap_single(pdev
, buffer_info
->dma
,
3516 adapter
->rx_buffer_len
+
3518 PCI_DMA_FROMDEVICE
);
3519 skb_put(skb
, length
);
3526 pci_unmap_page(pdev
, buffer_info
->page_dma
,
3527 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3528 buffer_info
->page_dma
= 0;
3529 skb_fill_page_desc(skb
, j
, buffer_info
->page
,
3531 buffer_info
->page
= NULL
;
3534 skb
->data_len
+= length
;
3535 skb
->truesize
+= length
;
3536 rx_desc
->wb
.upper
.status_error
= 0;
3537 if (staterr
& E1000_RXD_STAT_EOP
)
3543 if (i
== rx_ring
->count
)
3546 buffer_info
= &rx_ring
->buffer_info
[i
];
3547 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3548 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3549 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
3550 if (!(staterr
& E1000_RXD_STAT_DD
)) {
3551 rx_ring
->pending_skb
= skb
;
3552 rx_ring
->pending_skb_page
= j
;
3557 pskb_trim(skb
, skb
->len
- 4);
3559 if (i
== rx_ring
->count
)
3561 next_rxd
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3563 next_buffer
= &rx_ring
->buffer_info
[i
];
3565 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
3566 dev_kfree_skb_irq(skb
);
3569 rx_ring
->no_itr_adjust
|= (staterr
& E1000_RXD_STAT_DYNINT
);
3571 total_bytes
+= skb
->len
;
3574 igb_rx_checksum_adv(adapter
, staterr
, skb
);
3576 skb
->protocol
= eth_type_trans(skb
, netdev
);
3578 igb_receive_skb(adapter
, staterr
, rx_desc
->wb
.upper
.vlan
, skb
);
3580 netdev
->last_rx
= jiffies
;
3583 rx_desc
->wb
.upper
.status_error
= 0;
3585 /* return some buffers to hardware, one at a time is too slow */
3586 if (cleaned_count
>= IGB_RX_BUFFER_WRITE
) {
3587 igb_alloc_rx_buffers_adv(adapter
, rx_ring
,
3592 /* use prefetched values */
3594 buffer_info
= next_buffer
;
3596 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
3599 rx_ring
->next_to_clean
= i
;
3600 cleaned_count
= IGB_DESC_UNUSED(rx_ring
);
3603 igb_alloc_rx_buffers_adv(adapter
, rx_ring
, cleaned_count
);
3605 rx_ring
->total_packets
+= total_packets
;
3606 rx_ring
->total_bytes
+= total_bytes
;
3607 rx_ring
->rx_stats
.packets
+= total_packets
;
3608 rx_ring
->rx_stats
.bytes
+= total_bytes
;
3609 adapter
->net_stats
.rx_bytes
+= total_bytes
;
3610 adapter
->net_stats
.rx_packets
+= total_packets
;
3616 * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
3617 * @adapter: address of board private structure
3619 static void igb_alloc_rx_buffers_adv(struct igb_adapter
*adapter
,
3620 struct igb_ring
*rx_ring
,
3623 struct net_device
*netdev
= adapter
->netdev
;
3624 struct pci_dev
*pdev
= adapter
->pdev
;
3625 union e1000_adv_rx_desc
*rx_desc
;
3626 struct igb_buffer
*buffer_info
;
3627 struct sk_buff
*skb
;
3630 i
= rx_ring
->next_to_use
;
3631 buffer_info
= &rx_ring
->buffer_info
[i
];
3633 while (cleaned_count
--) {
3634 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
3636 if (adapter
->rx_ps_hdr_size
&& !buffer_info
->page
) {
3637 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
3638 if (!buffer_info
->page
) {
3639 adapter
->alloc_rx_buff_failed
++;
3642 buffer_info
->page_dma
=
3646 PCI_DMA_FROMDEVICE
);
3649 if (!buffer_info
->skb
) {
3652 if (adapter
->rx_ps_hdr_size
)
3653 bufsz
= adapter
->rx_ps_hdr_size
;
3655 bufsz
= adapter
->rx_buffer_len
;
3656 bufsz
+= NET_IP_ALIGN
;
3657 skb
= netdev_alloc_skb(netdev
, bufsz
);
3660 adapter
->alloc_rx_buff_failed
++;
3664 /* Make buffer alignment 2 beyond a 16 byte boundary
3665 * this will result in a 16 byte aligned IP header after
3666 * the 14 byte MAC header is removed
3668 skb_reserve(skb
, NET_IP_ALIGN
);
3670 buffer_info
->skb
= skb
;
3671 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3673 PCI_DMA_FROMDEVICE
);
3676 /* Refresh the desc even if buffer_addrs didn't change because
3677 * each write-back erases this info. */
3678 if (adapter
->rx_ps_hdr_size
) {
3679 rx_desc
->read
.pkt_addr
=
3680 cpu_to_le64(buffer_info
->page_dma
);
3681 rx_desc
->read
.hdr_addr
= cpu_to_le64(buffer_info
->dma
);
3683 rx_desc
->read
.pkt_addr
=
3684 cpu_to_le64(buffer_info
->dma
);
3685 rx_desc
->read
.hdr_addr
= 0;
3689 if (i
== rx_ring
->count
)
3691 buffer_info
= &rx_ring
->buffer_info
[i
];
3695 if (rx_ring
->next_to_use
!= i
) {
3696 rx_ring
->next_to_use
= i
;
3698 i
= (rx_ring
->count
- 1);
3702 /* Force memory writes to complete before letting h/w
3703 * know there are new descriptors to fetch. (Only
3704 * applicable for weak-ordered memory model archs,
3705 * such as IA-64). */
3707 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
3717 static int igb_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3719 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3720 struct mii_ioctl_data
*data
= if_mii(ifr
);
3722 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
3727 data
->phy_id
= adapter
->hw
.phy
.addr
;
3730 if (!capable(CAP_NET_ADMIN
))
3732 if (adapter
->hw
.phy
.ops
.read_phy_reg(&adapter
->hw
,
3734 & 0x1F, &data
->val_out
))
3750 static int igb_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3756 return igb_mii_ioctl(netdev
, ifr
, cmd
);
3762 static void igb_vlan_rx_register(struct net_device
*netdev
,
3763 struct vlan_group
*grp
)
3765 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3766 struct e1000_hw
*hw
= &adapter
->hw
;
3769 igb_irq_disable(adapter
);
3770 adapter
->vlgrp
= grp
;
3773 /* enable VLAN tag insert/strip */
3774 ctrl
= rd32(E1000_CTRL
);
3775 ctrl
|= E1000_CTRL_VME
;
3776 wr32(E1000_CTRL
, ctrl
);
3778 /* enable VLAN receive filtering */
3779 rctl
= rd32(E1000_RCTL
);
3780 rctl
|= E1000_RCTL_VFE
;
3781 rctl
&= ~E1000_RCTL_CFIEN
;
3782 wr32(E1000_RCTL
, rctl
);
3783 igb_update_mng_vlan(adapter
);
3785 adapter
->max_frame_size
+ VLAN_TAG_SIZE
);
3787 /* disable VLAN tag insert/strip */
3788 ctrl
= rd32(E1000_CTRL
);
3789 ctrl
&= ~E1000_CTRL_VME
;
3790 wr32(E1000_CTRL
, ctrl
);
3792 /* disable VLAN filtering */
3793 rctl
= rd32(E1000_RCTL
);
3794 rctl
&= ~E1000_RCTL_VFE
;
3795 wr32(E1000_RCTL
, rctl
);
3796 if (adapter
->mng_vlan_id
!= (u16
)IGB_MNG_VLAN_NONE
) {
3797 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3798 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
3801 adapter
->max_frame_size
);
3804 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3805 igb_irq_enable(adapter
);
3808 static void igb_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
3810 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3811 struct e1000_hw
*hw
= &adapter
->hw
;
3814 if ((adapter
->hw
.mng_cookie
.status
&
3815 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3816 (vid
== adapter
->mng_vlan_id
))
3818 /* add VID to filter table */
3819 index
= (vid
>> 5) & 0x7F;
3820 vfta
= array_rd32(E1000_VFTA
, index
);
3821 vfta
|= (1 << (vid
& 0x1F));
3822 igb_write_vfta(&adapter
->hw
, index
, vfta
);
3825 static void igb_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
3827 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3828 struct e1000_hw
*hw
= &adapter
->hw
;
3831 igb_irq_disable(adapter
);
3832 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
3834 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3835 igb_irq_enable(adapter
);
3837 if ((adapter
->hw
.mng_cookie
.status
&
3838 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
3839 (vid
== adapter
->mng_vlan_id
)) {
3840 /* release control to f/w */
3841 igb_release_hw_control(adapter
);
3845 /* remove VID from filter table */
3846 index
= (vid
>> 5) & 0x7F;
3847 vfta
= array_rd32(E1000_VFTA
, index
);
3848 vfta
&= ~(1 << (vid
& 0x1F));
3849 igb_write_vfta(&adapter
->hw
, index
, vfta
);
3852 static void igb_restore_vlan(struct igb_adapter
*adapter
)
3854 igb_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
3856 if (adapter
->vlgrp
) {
3858 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
3859 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
3861 igb_vlan_rx_add_vid(adapter
->netdev
, vid
);
3866 int igb_set_spd_dplx(struct igb_adapter
*adapter
, u16 spddplx
)
3868 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3872 /* Fiber NICs only allow 1000 gbps Full duplex */
3873 if ((adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
) &&
3874 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
3875 dev_err(&adapter
->pdev
->dev
,
3876 "Unsupported Speed/Duplex configuration\n");
3881 case SPEED_10
+ DUPLEX_HALF
:
3882 mac
->forced_speed_duplex
= ADVERTISE_10_HALF
;
3884 case SPEED_10
+ DUPLEX_FULL
:
3885 mac
->forced_speed_duplex
= ADVERTISE_10_FULL
;
3887 case SPEED_100
+ DUPLEX_HALF
:
3888 mac
->forced_speed_duplex
= ADVERTISE_100_HALF
;
3890 case SPEED_100
+ DUPLEX_FULL
:
3891 mac
->forced_speed_duplex
= ADVERTISE_100_FULL
;
3893 case SPEED_1000
+ DUPLEX_FULL
:
3895 adapter
->hw
.phy
.autoneg_advertised
= ADVERTISE_1000_FULL
;
3897 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
3899 dev_err(&adapter
->pdev
->dev
,
3900 "Unsupported Speed/Duplex configuration\n");
3907 static int igb_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3909 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3910 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3911 struct e1000_hw
*hw
= &adapter
->hw
;
3912 u32 ctrl
, ctrl_ext
, rctl
, status
;
3913 u32 wufc
= adapter
->wol
;
3918 netif_device_detach(netdev
);
3920 if (netif_running(netdev
)) {
3921 WARN_ON(test_bit(__IGB_RESETTING
, &adapter
->state
));
3923 igb_free_irq(adapter
);
3927 retval
= pci_save_state(pdev
);
3932 status
= rd32(E1000_STATUS
);
3933 if (status
& E1000_STATUS_LU
)
3934 wufc
&= ~E1000_WUFC_LNKC
;
3937 igb_setup_rctl(adapter
);
3938 igb_set_multi(netdev
);
3940 /* turn on all-multi mode if wake on multicast is enabled */
3941 if (wufc
& E1000_WUFC_MC
) {
3942 rctl
= rd32(E1000_RCTL
);
3943 rctl
|= E1000_RCTL_MPE
;
3944 wr32(E1000_RCTL
, rctl
);
3947 ctrl
= rd32(E1000_CTRL
);
3948 /* advertise wake from D3Cold */
3949 #define E1000_CTRL_ADVD3WUC 0x00100000
3950 /* phy power management enable */
3951 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3952 ctrl
|= E1000_CTRL_ADVD3WUC
;
3953 wr32(E1000_CTRL
, ctrl
);
3955 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
3956 adapter
->hw
.phy
.media_type
==
3957 e1000_media_type_internal_serdes
) {
3958 /* keep the laser running in D3 */
3959 ctrl_ext
= rd32(E1000_CTRL_EXT
);
3960 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
3961 wr32(E1000_CTRL_EXT
, ctrl_ext
);
3964 /* Allow time for pending master requests to run */
3965 igb_disable_pcie_master(&adapter
->hw
);
3967 wr32(E1000_WUC
, E1000_WUC_PME_EN
);
3968 wr32(E1000_WUFC
, wufc
);
3969 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3970 pci_enable_wake(pdev
, PCI_D3cold
, 1);
3973 wr32(E1000_WUFC
, 0);
3974 pci_enable_wake(pdev
, PCI_D3hot
, 0);
3975 pci_enable_wake(pdev
, PCI_D3cold
, 0);
3978 /* make sure adapter isn't asleep if manageability is enabled */
3979 if (adapter
->en_mng_pt
) {
3980 pci_enable_wake(pdev
, PCI_D3hot
, 1);
3981 pci_enable_wake(pdev
, PCI_D3cold
, 1);
3984 /* Release control of h/w to f/w. If f/w is AMT enabled, this
3985 * would have already happened in close and is redundant. */
3986 igb_release_hw_control(adapter
);
3988 pci_disable_device(pdev
);
3990 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3996 static int igb_resume(struct pci_dev
*pdev
)
3998 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3999 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4000 struct e1000_hw
*hw
= &adapter
->hw
;
4003 pci_set_power_state(pdev
, PCI_D0
);
4004 pci_restore_state(pdev
);
4006 if (adapter
->need_ioport
)
4007 err
= pci_enable_device(pdev
);
4009 err
= pci_enable_device_mem(pdev
);
4012 "igb: Cannot enable PCI device from suspend\n");
4015 pci_set_master(pdev
);
4017 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4018 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4020 if (netif_running(netdev
)) {
4021 err
= igb_request_irq(adapter
);
4026 /* e1000_power_up_phy(adapter); */
4029 wr32(E1000_WUS
, ~0);
4031 igb_init_manageability(adapter
);
4033 if (netif_running(netdev
))
4036 netif_device_attach(netdev
);
4038 /* let the f/w know that the h/w is now under the control of the
4040 igb_get_hw_control(adapter
);
4046 static void igb_shutdown(struct pci_dev
*pdev
)
4048 igb_suspend(pdev
, PMSG_SUSPEND
);
4051 #ifdef CONFIG_NET_POLL_CONTROLLER
4053 * Polling 'interrupt' - used by things like netconsole to send skbs
4054 * without having to re-enable interrupts. It's not called while
4055 * the interrupt routine is executing.
4057 static void igb_netpoll(struct net_device
*netdev
)
4059 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4063 igb_irq_disable(adapter
);
4064 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
4065 igb_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
4067 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4068 igb_clean_rx_irq_adv(adapter
, &adapter
->rx_ring
[i
],
4070 adapter
->rx_ring
[i
].napi
.weight
);
4072 igb_irq_enable(adapter
);
4074 #endif /* CONFIG_NET_POLL_CONTROLLER */
4077 * igb_io_error_detected - called when PCI error is detected
4078 * @pdev: Pointer to PCI device
4079 * @state: The current pci connection state
4081 * This function is called after a PCI bus error affecting
4082 * this device has been detected.
4084 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*pdev
,
4085 pci_channel_state_t state
)
4087 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4088 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4090 netif_device_detach(netdev
);
4092 if (netif_running(netdev
))
4094 pci_disable_device(pdev
);
4096 /* Request a slot slot reset. */
4097 return PCI_ERS_RESULT_NEED_RESET
;
4101 * igb_io_slot_reset - called after the pci bus has been reset.
4102 * @pdev: Pointer to PCI device
4104 * Restart the card from scratch, as if from a cold-boot. Implementation
4105 * resembles the first-half of the igb_resume routine.
4107 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*pdev
)
4109 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4110 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4111 struct e1000_hw
*hw
= &adapter
->hw
;
4114 if (adapter
->need_ioport
)
4115 err
= pci_enable_device(pdev
);
4117 err
= pci_enable_device_mem(pdev
);
4120 "Cannot re-enable PCI device after reset.\n");
4121 return PCI_ERS_RESULT_DISCONNECT
;
4123 pci_set_master(pdev
);
4124 pci_restore_state(pdev
);
4126 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4127 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4130 wr32(E1000_WUS
, ~0);
4132 return PCI_ERS_RESULT_RECOVERED
;
4136 * igb_io_resume - called when traffic can start flowing again.
4137 * @pdev: Pointer to PCI device
4139 * This callback is called when the error recovery driver tells us that
4140 * its OK to resume normal operation. Implementation resembles the
4141 * second-half of the igb_resume routine.
4143 static void igb_io_resume(struct pci_dev
*pdev
)
4145 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4146 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4148 igb_init_manageability(adapter
);
4150 if (netif_running(netdev
)) {
4151 if (igb_up(adapter
)) {
4152 dev_err(&pdev
->dev
, "igb_up failed after reset\n");
4157 netif_device_attach(netdev
);
4159 /* let the f/w know that the h/w is now under the control of the
4161 igb_get_hw_control(adapter
);