1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007-2009 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/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/net_tstamp.h>
38 #include <linux/mii.h>
39 #include <linux/ethtool.h>
40 #include <linux/if_vlan.h>
41 #include <linux/pci.h>
42 #include <linux/pci-aspm.h>
43 #include <linux/delay.h>
44 #include <linux/interrupt.h>
45 #include <linux/if_ether.h>
46 #include <linux/aer.h>
48 #include <linux/dca.h>
52 #define DRV_VERSION "1.3.16-k2"
53 char igb_driver_name
[] = "igb";
54 char igb_driver_version
[] = DRV_VERSION
;
55 static const char igb_driver_string
[] =
56 "Intel(R) Gigabit Ethernet Network Driver";
57 static const char igb_copyright
[] = "Copyright (c) 2007-2009 Intel Corporation.";
59 static const struct e1000_info
*igb_info_tbl
[] = {
60 [board_82575
] = &e1000_82575_info
,
63 static struct pci_device_id igb_pci_tbl
[] = {
64 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576
), board_82575
},
65 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_NS
), board_82575
},
66 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_FIBER
), board_82575
},
67 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_SERDES
), board_82575
},
68 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82576_QUAD_COPPER
), board_82575
},
69 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575EB_COPPER
), board_82575
},
70 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575EB_FIBER_SERDES
), board_82575
},
71 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82575GB_QUAD_COPPER
), board_82575
},
72 /* required last entry */
76 MODULE_DEVICE_TABLE(pci
, igb_pci_tbl
);
78 void igb_reset(struct igb_adapter
*);
79 static int igb_setup_all_tx_resources(struct igb_adapter
*);
80 static int igb_setup_all_rx_resources(struct igb_adapter
*);
81 static void igb_free_all_tx_resources(struct igb_adapter
*);
82 static void igb_free_all_rx_resources(struct igb_adapter
*);
83 void igb_update_stats(struct igb_adapter
*);
84 static int igb_probe(struct pci_dev
*, const struct pci_device_id
*);
85 static void __devexit
igb_remove(struct pci_dev
*pdev
);
86 static int igb_sw_init(struct igb_adapter
*);
87 static int igb_open(struct net_device
*);
88 static int igb_close(struct net_device
*);
89 static void igb_configure_tx(struct igb_adapter
*);
90 static void igb_configure_rx(struct igb_adapter
*);
91 static void igb_setup_rctl(struct igb_adapter
*);
92 static void igb_clean_all_tx_rings(struct igb_adapter
*);
93 static void igb_clean_all_rx_rings(struct igb_adapter
*);
94 static void igb_clean_tx_ring(struct igb_ring
*);
95 static void igb_clean_rx_ring(struct igb_ring
*);
96 static void igb_set_multi(struct net_device
*);
97 static void igb_update_phy_info(unsigned long);
98 static void igb_watchdog(unsigned long);
99 static void igb_watchdog_task(struct work_struct
*);
100 static int igb_xmit_frame_ring_adv(struct sk_buff
*, struct net_device
*,
102 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*);
103 static struct net_device_stats
*igb_get_stats(struct net_device
*);
104 static int igb_change_mtu(struct net_device
*, int);
105 static int igb_set_mac(struct net_device
*, void *);
106 static irqreturn_t
igb_intr(int irq
, void *);
107 static irqreturn_t
igb_intr_msi(int irq
, void *);
108 static irqreturn_t
igb_msix_other(int irq
, void *);
109 static irqreturn_t
igb_msix_rx(int irq
, void *);
110 static irqreturn_t
igb_msix_tx(int irq
, void *);
111 #ifdef CONFIG_IGB_DCA
112 static void igb_update_rx_dca(struct igb_ring
*);
113 static void igb_update_tx_dca(struct igb_ring
*);
114 static void igb_setup_dca(struct igb_adapter
*);
115 #endif /* CONFIG_IGB_DCA */
116 static bool igb_clean_tx_irq(struct igb_ring
*);
117 static int igb_poll(struct napi_struct
*, int);
118 static bool igb_clean_rx_irq_adv(struct igb_ring
*, int *, int);
119 static void igb_alloc_rx_buffers_adv(struct igb_ring
*, int);
120 static int igb_ioctl(struct net_device
*, struct ifreq
*, int cmd
);
121 static void igb_tx_timeout(struct net_device
*);
122 static void igb_reset_task(struct work_struct
*);
123 static void igb_vlan_rx_register(struct net_device
*, struct vlan_group
*);
124 static void igb_vlan_rx_add_vid(struct net_device
*, u16
);
125 static void igb_vlan_rx_kill_vid(struct net_device
*, u16
);
126 static void igb_restore_vlan(struct igb_adapter
*);
127 static void igb_ping_all_vfs(struct igb_adapter
*);
128 static void igb_msg_task(struct igb_adapter
*);
129 static int igb_rcv_msg_from_vf(struct igb_adapter
*, u32
);
130 static inline void igb_set_rah_pool(struct e1000_hw
*, int , int);
131 static void igb_set_mc_list_pools(struct igb_adapter
*, int, u16
);
132 static void igb_vmm_control(struct igb_adapter
*);
133 static inline void igb_set_vmolr(struct e1000_hw
*, int);
134 static inline int igb_set_vf_rlpml(struct igb_adapter
*, int, int);
135 static int igb_set_vf_mac(struct igb_adapter
*adapter
, int, unsigned char *);
136 static void igb_restore_vf_multicasts(struct igb_adapter
*adapter
);
138 static int igb_suspend(struct pci_dev
*, pm_message_t
);
140 static int igb_resume(struct pci_dev
*);
142 static void igb_shutdown(struct pci_dev
*);
143 #ifdef CONFIG_IGB_DCA
144 static int igb_notify_dca(struct notifier_block
*, unsigned long, void *);
145 static struct notifier_block dca_notifier
= {
146 .notifier_call
= igb_notify_dca
,
151 #ifdef CONFIG_NET_POLL_CONTROLLER
152 /* for netdump / net console */
153 static void igb_netpoll(struct net_device
*);
156 #ifdef CONFIG_PCI_IOV
157 static ssize_t
igb_set_num_vfs(struct device
*, struct device_attribute
*,
158 const char *, size_t);
159 static ssize_t
igb_show_num_vfs(struct device
*, struct device_attribute
*,
161 DEVICE_ATTR(num_vfs
, S_IRUGO
| S_IWUSR
, igb_show_num_vfs
, igb_set_num_vfs
);
163 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*,
164 pci_channel_state_t
);
165 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*);
166 static void igb_io_resume(struct pci_dev
*);
168 static struct pci_error_handlers igb_err_handler
= {
169 .error_detected
= igb_io_error_detected
,
170 .slot_reset
= igb_io_slot_reset
,
171 .resume
= igb_io_resume
,
175 static struct pci_driver igb_driver
= {
176 .name
= igb_driver_name
,
177 .id_table
= igb_pci_tbl
,
179 .remove
= __devexit_p(igb_remove
),
181 /* Power Managment Hooks */
182 .suspend
= igb_suspend
,
183 .resume
= igb_resume
,
185 .shutdown
= igb_shutdown
,
186 .err_handler
= &igb_err_handler
189 static int global_quad_port_a
; /* global quad port a indication */
191 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
192 MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
193 MODULE_LICENSE("GPL");
194 MODULE_VERSION(DRV_VERSION
);
197 * Scale the NIC clock cycle by a large factor so that
198 * relatively small clock corrections can be added or
199 * substracted at each clock tick. The drawbacks of a
200 * large factor are a) that the clock register overflows
201 * more quickly (not such a big deal) and b) that the
202 * increment per tick has to fit into 24 bits.
205 * TIMINCA = IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS *
207 * TIMINCA += TIMINCA * adjustment [ppm] / 1e9
209 * The base scale factor is intentionally a power of two
210 * so that the division in %struct timecounter can be done with
213 #define IGB_TSYNC_SHIFT (19)
214 #define IGB_TSYNC_SCALE (1<<IGB_TSYNC_SHIFT)
217 * The duration of one clock cycle of the NIC.
219 * @todo This hard-coded value is part of the specification and might change
220 * in future hardware revisions. Add revision check.
222 #define IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS 16
224 #if (IGB_TSYNC_SCALE * IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS) >= (1<<24)
225 # error IGB_TSYNC_SCALE and/or IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS are too large to fit into TIMINCA
229 * igb_read_clock - read raw cycle counter (to be used by time counter)
231 static cycle_t
igb_read_clock(const struct cyclecounter
*tc
)
233 struct igb_adapter
*adapter
=
234 container_of(tc
, struct igb_adapter
, cycles
);
235 struct e1000_hw
*hw
= &adapter
->hw
;
238 stamp
= rd32(E1000_SYSTIML
);
239 stamp
|= (u64
)rd32(E1000_SYSTIMH
) << 32ULL;
246 * igb_get_hw_dev_name - return device name string
247 * used by hardware layer to print debugging information
249 char *igb_get_hw_dev_name(struct e1000_hw
*hw
)
251 struct igb_adapter
*adapter
= hw
->back
;
252 return adapter
->netdev
->name
;
256 * igb_get_time_str - format current NIC and system time as string
258 static char *igb_get_time_str(struct igb_adapter
*adapter
,
261 cycle_t hw
= adapter
->cycles
.read(&adapter
->cycles
);
262 struct timespec nic
= ns_to_timespec(timecounter_read(&adapter
->clock
));
264 struct timespec delta
;
265 getnstimeofday(&sys
);
267 delta
= timespec_sub(nic
, sys
);
270 "HW %llu, NIC %ld.%09lus, SYS %ld.%09lus, NIC-SYS %lds + %09luns",
272 (long)nic
.tv_sec
, nic
.tv_nsec
,
273 (long)sys
.tv_sec
, sys
.tv_nsec
,
274 (long)delta
.tv_sec
, delta
.tv_nsec
);
281 * igb_init_module - Driver Registration Routine
283 * igb_init_module is the first routine called when the driver is
284 * loaded. All it does is register with the PCI subsystem.
286 static int __init
igb_init_module(void)
289 printk(KERN_INFO
"%s - version %s\n",
290 igb_driver_string
, igb_driver_version
);
292 printk(KERN_INFO
"%s\n", igb_copyright
);
294 global_quad_port_a
= 0;
296 #ifdef CONFIG_IGB_DCA
297 dca_register_notify(&dca_notifier
);
300 ret
= pci_register_driver(&igb_driver
);
304 module_init(igb_init_module
);
307 * igb_exit_module - Driver Exit Cleanup Routine
309 * igb_exit_module is called just before the driver is removed
312 static void __exit
igb_exit_module(void)
314 #ifdef CONFIG_IGB_DCA
315 dca_unregister_notify(&dca_notifier
);
317 pci_unregister_driver(&igb_driver
);
320 module_exit(igb_exit_module
);
322 #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1))
324 * igb_cache_ring_register - Descriptor ring to register mapping
325 * @adapter: board private structure to initialize
327 * Once we know the feature-set enabled for the device, we'll cache
328 * the register offset the descriptor ring is assigned to.
330 static void igb_cache_ring_register(struct igb_adapter
*adapter
)
333 unsigned int rbase_offset
= adapter
->vfs_allocated_count
;
335 switch (adapter
->hw
.mac
.type
) {
337 /* The queues are allocated for virtualization such that VF 0
338 * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc.
339 * In order to avoid collision we start at the first free queue
340 * and continue consuming queues in the same sequence
342 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
343 adapter
->rx_ring
[i
].reg_idx
= rbase_offset
+
345 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
346 adapter
->tx_ring
[i
].reg_idx
= rbase_offset
+
351 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
352 adapter
->rx_ring
[i
].reg_idx
= i
;
353 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
354 adapter
->tx_ring
[i
].reg_idx
= i
;
360 * igb_alloc_queues - Allocate memory for all rings
361 * @adapter: board private structure to initialize
363 * We allocate one ring per queue at run-time since we don't know the
364 * number of queues at compile-time.
366 static int igb_alloc_queues(struct igb_adapter
*adapter
)
370 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
371 sizeof(struct igb_ring
), GFP_KERNEL
);
372 if (!adapter
->tx_ring
)
375 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
376 sizeof(struct igb_ring
), GFP_KERNEL
);
377 if (!adapter
->rx_ring
) {
378 kfree(adapter
->tx_ring
);
382 adapter
->rx_ring
->buddy
= adapter
->tx_ring
;
384 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
385 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
386 ring
->count
= adapter
->tx_ring_count
;
387 ring
->adapter
= adapter
;
388 ring
->queue_index
= i
;
390 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
391 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
392 ring
->count
= adapter
->rx_ring_count
;
393 ring
->adapter
= adapter
;
394 ring
->queue_index
= i
;
395 ring
->itr_register
= E1000_ITR
;
397 /* set a default napi handler for each rx_ring */
398 netif_napi_add(adapter
->netdev
, &ring
->napi
, igb_poll
, 64);
401 igb_cache_ring_register(adapter
);
405 static void igb_free_queues(struct igb_adapter
*adapter
)
409 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
410 netif_napi_del(&adapter
->rx_ring
[i
].napi
);
412 kfree(adapter
->tx_ring
);
413 kfree(adapter
->rx_ring
);
416 #define IGB_N0_QUEUE -1
417 static void igb_assign_vector(struct igb_adapter
*adapter
, int rx_queue
,
418 int tx_queue
, int msix_vector
)
421 struct e1000_hw
*hw
= &adapter
->hw
;
424 switch (hw
->mac
.type
) {
426 /* The 82575 assigns vectors using a bitmask, which matches the
427 bitmask for the EICR/EIMS/EIMC registers. To assign one
428 or more queues to a vector, we write the appropriate bits
429 into the MSIXBM register for that vector. */
430 if (rx_queue
> IGB_N0_QUEUE
) {
431 msixbm
= E1000_EICR_RX_QUEUE0
<< rx_queue
;
432 adapter
->rx_ring
[rx_queue
].eims_value
= msixbm
;
434 if (tx_queue
> IGB_N0_QUEUE
) {
435 msixbm
|= E1000_EICR_TX_QUEUE0
<< tx_queue
;
436 adapter
->tx_ring
[tx_queue
].eims_value
=
437 E1000_EICR_TX_QUEUE0
<< tx_queue
;
439 array_wr32(E1000_MSIXBM(0), msix_vector
, msixbm
);
442 /* 82576 uses a table-based method for assigning vectors.
443 Each queue has a single entry in the table to which we write
444 a vector number along with a "valid" bit. Sadly, the layout
445 of the table is somewhat counterintuitive. */
446 if (rx_queue
> IGB_N0_QUEUE
) {
447 index
= (rx_queue
>> 1) + adapter
->vfs_allocated_count
;
448 ivar
= array_rd32(E1000_IVAR0
, index
);
449 if (rx_queue
& 0x1) {
450 /* vector goes into third byte of register */
451 ivar
= ivar
& 0xFF00FFFF;
452 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 16;
454 /* vector goes into low byte of register */
455 ivar
= ivar
& 0xFFFFFF00;
456 ivar
|= msix_vector
| E1000_IVAR_VALID
;
458 adapter
->rx_ring
[rx_queue
].eims_value
= 1 << msix_vector
;
459 array_wr32(E1000_IVAR0
, index
, ivar
);
461 if (tx_queue
> IGB_N0_QUEUE
) {
462 index
= (tx_queue
>> 1) + adapter
->vfs_allocated_count
;
463 ivar
= array_rd32(E1000_IVAR0
, index
);
464 if (tx_queue
& 0x1) {
465 /* vector goes into high byte of register */
466 ivar
= ivar
& 0x00FFFFFF;
467 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 24;
469 /* vector goes into second byte of register */
470 ivar
= ivar
& 0xFFFF00FF;
471 ivar
|= (msix_vector
| E1000_IVAR_VALID
) << 8;
473 adapter
->tx_ring
[tx_queue
].eims_value
= 1 << msix_vector
;
474 array_wr32(E1000_IVAR0
, index
, ivar
);
484 * igb_configure_msix - Configure MSI-X hardware
486 * igb_configure_msix sets up the hardware to properly
487 * generate MSI-X interrupts.
489 static void igb_configure_msix(struct igb_adapter
*adapter
)
493 struct e1000_hw
*hw
= &adapter
->hw
;
495 adapter
->eims_enable_mask
= 0;
496 if (hw
->mac
.type
== e1000_82576
)
497 /* Turn on MSI-X capability first, or our settings
498 * won't stick. And it will take days to debug. */
499 wr32(E1000_GPIE
, E1000_GPIE_MSIX_MODE
|
500 E1000_GPIE_PBA
| E1000_GPIE_EIAME
|
503 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
504 struct igb_ring
*tx_ring
= &adapter
->tx_ring
[i
];
505 igb_assign_vector(adapter
, IGB_N0_QUEUE
, i
, vector
++);
506 adapter
->eims_enable_mask
|= tx_ring
->eims_value
;
507 if (tx_ring
->itr_val
)
508 writel(tx_ring
->itr_val
,
509 hw
->hw_addr
+ tx_ring
->itr_register
);
511 writel(1, hw
->hw_addr
+ tx_ring
->itr_register
);
514 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
515 struct igb_ring
*rx_ring
= &adapter
->rx_ring
[i
];
516 rx_ring
->buddy
= NULL
;
517 igb_assign_vector(adapter
, i
, IGB_N0_QUEUE
, vector
++);
518 adapter
->eims_enable_mask
|= rx_ring
->eims_value
;
519 if (rx_ring
->itr_val
)
520 writel(rx_ring
->itr_val
,
521 hw
->hw_addr
+ rx_ring
->itr_register
);
523 writel(1, hw
->hw_addr
+ rx_ring
->itr_register
);
527 /* set vector for other causes, i.e. link changes */
528 switch (hw
->mac
.type
) {
530 array_wr32(E1000_MSIXBM(0), vector
++,
533 tmp
= rd32(E1000_CTRL_EXT
);
534 /* enable MSI-X PBA support*/
535 tmp
|= E1000_CTRL_EXT_PBA_CLR
;
537 /* Auto-Mask interrupts upon ICR read. */
538 tmp
|= E1000_CTRL_EXT_EIAME
;
539 tmp
|= E1000_CTRL_EXT_IRCA
;
541 wr32(E1000_CTRL_EXT
, tmp
);
542 adapter
->eims_enable_mask
|= E1000_EIMS_OTHER
;
543 adapter
->eims_other
= E1000_EIMS_OTHER
;
548 tmp
= (vector
++ | E1000_IVAR_VALID
) << 8;
549 wr32(E1000_IVAR_MISC
, tmp
);
551 adapter
->eims_enable_mask
= (1 << (vector
)) - 1;
552 adapter
->eims_other
= 1 << (vector
- 1);
555 /* do nothing, since nothing else supports MSI-X */
557 } /* switch (hw->mac.type) */
562 * igb_request_msix - Initialize MSI-X interrupts
564 * igb_request_msix allocates MSI-X vectors and requests interrupts from the
567 static int igb_request_msix(struct igb_adapter
*adapter
)
569 struct net_device
*netdev
= adapter
->netdev
;
570 int i
, err
= 0, vector
= 0;
574 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
575 struct igb_ring
*ring
= &(adapter
->tx_ring
[i
]);
576 sprintf(ring
->name
, "%s-tx-%d", netdev
->name
, i
);
577 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
578 &igb_msix_tx
, 0, ring
->name
,
579 &(adapter
->tx_ring
[i
]));
582 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
583 ring
->itr_val
= 976; /* ~4000 ints/sec */
586 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
587 struct igb_ring
*ring
= &(adapter
->rx_ring
[i
]);
588 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
589 sprintf(ring
->name
, "%s-rx-%d", netdev
->name
, i
);
591 memcpy(ring
->name
, netdev
->name
, IFNAMSIZ
);
592 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
593 &igb_msix_rx
, 0, ring
->name
,
594 &(adapter
->rx_ring
[i
]));
597 ring
->itr_register
= E1000_EITR(0) + (vector
<< 2);
598 ring
->itr_val
= adapter
->itr
;
602 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
603 &igb_msix_other
, 0, netdev
->name
, netdev
);
607 igb_configure_msix(adapter
);
613 static void igb_reset_interrupt_capability(struct igb_adapter
*adapter
)
615 if (adapter
->msix_entries
) {
616 pci_disable_msix(adapter
->pdev
);
617 kfree(adapter
->msix_entries
);
618 adapter
->msix_entries
= NULL
;
619 } else if (adapter
->flags
& IGB_FLAG_HAS_MSI
)
620 pci_disable_msi(adapter
->pdev
);
626 * igb_set_interrupt_capability - set MSI or MSI-X if supported
628 * Attempt to configure interrupts using the best available
629 * capabilities of the hardware and kernel.
631 static void igb_set_interrupt_capability(struct igb_adapter
*adapter
)
636 /* Number of supported queues. */
637 /* Having more queues than CPUs doesn't make sense. */
638 adapter
->num_rx_queues
= min_t(u32
, IGB_MAX_RX_QUEUES
, num_online_cpus());
639 adapter
->num_tx_queues
= min_t(u32
, IGB_MAX_TX_QUEUES
, num_online_cpus());
641 numvecs
= adapter
->num_tx_queues
+ adapter
->num_rx_queues
+ 1;
642 adapter
->msix_entries
= kcalloc(numvecs
, sizeof(struct msix_entry
),
644 if (!adapter
->msix_entries
)
647 for (i
= 0; i
< numvecs
; i
++)
648 adapter
->msix_entries
[i
].entry
= i
;
650 err
= pci_enable_msix(adapter
->pdev
,
651 adapter
->msix_entries
,
656 igb_reset_interrupt_capability(adapter
);
658 /* If we can't do MSI-X, try MSI */
660 adapter
->num_rx_queues
= 1;
661 adapter
->num_tx_queues
= 1;
662 if (!pci_enable_msi(adapter
->pdev
))
663 adapter
->flags
|= IGB_FLAG_HAS_MSI
;
665 /* Notify the stack of the (possibly) reduced Tx Queue count. */
666 adapter
->netdev
->real_num_tx_queues
= adapter
->num_tx_queues
;
671 * igb_request_irq - initialize interrupts
673 * Attempts to configure interrupts using the best available
674 * capabilities of the hardware and kernel.
676 static int igb_request_irq(struct igb_adapter
*adapter
)
678 struct net_device
*netdev
= adapter
->netdev
;
679 struct e1000_hw
*hw
= &adapter
->hw
;
682 if (adapter
->msix_entries
) {
683 err
= igb_request_msix(adapter
);
686 /* fall back to MSI */
687 igb_reset_interrupt_capability(adapter
);
688 if (!pci_enable_msi(adapter
->pdev
))
689 adapter
->flags
|= IGB_FLAG_HAS_MSI
;
690 igb_free_all_tx_resources(adapter
);
691 igb_free_all_rx_resources(adapter
);
692 adapter
->num_rx_queues
= 1;
693 igb_alloc_queues(adapter
);
695 switch (hw
->mac
.type
) {
697 wr32(E1000_MSIXBM(0),
698 (E1000_EICR_RX_QUEUE0
| E1000_EIMS_OTHER
));
701 wr32(E1000_IVAR0
, E1000_IVAR_VALID
);
708 if (adapter
->flags
& IGB_FLAG_HAS_MSI
) {
709 err
= request_irq(adapter
->pdev
->irq
, &igb_intr_msi
, 0,
710 netdev
->name
, netdev
);
713 /* fall back to legacy interrupts */
714 igb_reset_interrupt_capability(adapter
);
715 adapter
->flags
&= ~IGB_FLAG_HAS_MSI
;
718 err
= request_irq(adapter
->pdev
->irq
, &igb_intr
, IRQF_SHARED
,
719 netdev
->name
, netdev
);
722 dev_err(&adapter
->pdev
->dev
, "Error %d getting interrupt\n",
729 static void igb_free_irq(struct igb_adapter
*adapter
)
731 struct net_device
*netdev
= adapter
->netdev
;
733 if (adapter
->msix_entries
) {
736 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
737 free_irq(adapter
->msix_entries
[vector
++].vector
,
738 &(adapter
->tx_ring
[i
]));
739 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
740 free_irq(adapter
->msix_entries
[vector
++].vector
,
741 &(adapter
->rx_ring
[i
]));
743 free_irq(adapter
->msix_entries
[vector
++].vector
, netdev
);
747 free_irq(adapter
->pdev
->irq
, netdev
);
751 * igb_irq_disable - Mask off interrupt generation on the NIC
752 * @adapter: board private structure
754 static void igb_irq_disable(struct igb_adapter
*adapter
)
756 struct e1000_hw
*hw
= &adapter
->hw
;
758 if (adapter
->msix_entries
) {
760 wr32(E1000_EIMC
, ~0);
767 synchronize_irq(adapter
->pdev
->irq
);
771 * igb_irq_enable - Enable default interrupt generation settings
772 * @adapter: board private structure
774 static void igb_irq_enable(struct igb_adapter
*adapter
)
776 struct e1000_hw
*hw
= &adapter
->hw
;
778 if (adapter
->msix_entries
) {
779 wr32(E1000_EIAC
, adapter
->eims_enable_mask
);
780 wr32(E1000_EIAM
, adapter
->eims_enable_mask
);
781 wr32(E1000_EIMS
, adapter
->eims_enable_mask
);
782 if (adapter
->vfs_allocated_count
)
783 wr32(E1000_MBVFIMR
, 0xFF);
784 wr32(E1000_IMS
, (E1000_IMS_LSC
| E1000_IMS_VMMB
|
785 E1000_IMS_DOUTSYNC
));
787 wr32(E1000_IMS
, IMS_ENABLE_MASK
);
788 wr32(E1000_IAM
, IMS_ENABLE_MASK
);
792 static void igb_update_mng_vlan(struct igb_adapter
*adapter
)
794 struct net_device
*netdev
= adapter
->netdev
;
795 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
796 u16 old_vid
= adapter
->mng_vlan_id
;
797 if (adapter
->vlgrp
) {
798 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
799 if (adapter
->hw
.mng_cookie
.status
&
800 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
801 igb_vlan_rx_add_vid(netdev
, vid
);
802 adapter
->mng_vlan_id
= vid
;
804 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
806 if ((old_vid
!= (u16
)IGB_MNG_VLAN_NONE
) &&
808 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
809 igb_vlan_rx_kill_vid(netdev
, old_vid
);
811 adapter
->mng_vlan_id
= vid
;
816 * igb_release_hw_control - release control of the h/w to f/w
817 * @adapter: address of board private structure
819 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
820 * For ASF and Pass Through versions of f/w this means that the
821 * driver is no longer loaded.
824 static void igb_release_hw_control(struct igb_adapter
*adapter
)
826 struct e1000_hw
*hw
= &adapter
->hw
;
829 /* Let firmware take over control of h/w */
830 ctrl_ext
= rd32(E1000_CTRL_EXT
);
832 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
837 * igb_get_hw_control - get control of the h/w from f/w
838 * @adapter: address of board private structure
840 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
841 * For ASF and Pass Through versions of f/w this means that
842 * the driver is loaded.
845 static void igb_get_hw_control(struct igb_adapter
*adapter
)
847 struct e1000_hw
*hw
= &adapter
->hw
;
850 /* Let firmware know the driver has taken over */
851 ctrl_ext
= rd32(E1000_CTRL_EXT
);
853 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
857 * igb_configure - configure the hardware for RX and TX
858 * @adapter: private board structure
860 static void igb_configure(struct igb_adapter
*adapter
)
862 struct net_device
*netdev
= adapter
->netdev
;
865 igb_get_hw_control(adapter
);
866 igb_set_multi(netdev
);
868 igb_restore_vlan(adapter
);
870 igb_configure_tx(adapter
);
871 igb_setup_rctl(adapter
);
872 igb_configure_rx(adapter
);
874 igb_rx_fifo_flush_82575(&adapter
->hw
);
876 /* call IGB_DESC_UNUSED which always leaves
877 * at least 1 descriptor unused to make sure
878 * next_to_use != next_to_clean */
879 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
880 struct igb_ring
*ring
= &adapter
->rx_ring
[i
];
881 igb_alloc_rx_buffers_adv(ring
, IGB_DESC_UNUSED(ring
));
885 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
890 * igb_up - Open the interface and prepare it to handle traffic
891 * @adapter: board private structure
894 int igb_up(struct igb_adapter
*adapter
)
896 struct e1000_hw
*hw
= &adapter
->hw
;
899 /* hardware has been reset, we need to reload some things */
900 igb_configure(adapter
);
902 clear_bit(__IGB_DOWN
, &adapter
->state
);
904 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
905 napi_enable(&adapter
->rx_ring
[i
].napi
);
906 if (adapter
->msix_entries
)
907 igb_configure_msix(adapter
);
909 igb_vmm_control(adapter
);
910 igb_set_rah_pool(hw
, adapter
->vfs_allocated_count
, 0);
911 igb_set_vmolr(hw
, adapter
->vfs_allocated_count
);
913 /* Clear any pending interrupts. */
915 igb_irq_enable(adapter
);
917 /* Fire a link change interrupt to start the watchdog. */
918 wr32(E1000_ICS
, E1000_ICS_LSC
);
922 void igb_down(struct igb_adapter
*adapter
)
924 struct e1000_hw
*hw
= &adapter
->hw
;
925 struct net_device
*netdev
= adapter
->netdev
;
929 /* signal that we're down so the interrupt handler does not
930 * reschedule our watchdog timer */
931 set_bit(__IGB_DOWN
, &adapter
->state
);
933 /* disable receives in the hardware */
934 rctl
= rd32(E1000_RCTL
);
935 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
936 /* flush and sleep below */
938 netif_tx_stop_all_queues(netdev
);
940 /* disable transmits in the hardware */
941 tctl
= rd32(E1000_TCTL
);
942 tctl
&= ~E1000_TCTL_EN
;
943 wr32(E1000_TCTL
, tctl
);
944 /* flush both disables and wait for them to finish */
948 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
949 napi_disable(&adapter
->rx_ring
[i
].napi
);
951 igb_irq_disable(adapter
);
953 del_timer_sync(&adapter
->watchdog_timer
);
954 del_timer_sync(&adapter
->phy_info_timer
);
956 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
957 netif_carrier_off(netdev
);
959 /* record the stats before reset*/
960 igb_update_stats(adapter
);
962 adapter
->link_speed
= 0;
963 adapter
->link_duplex
= 0;
965 if (!pci_channel_offline(adapter
->pdev
))
967 igb_clean_all_tx_rings(adapter
);
968 igb_clean_all_rx_rings(adapter
);
971 void igb_reinit_locked(struct igb_adapter
*adapter
)
973 WARN_ON(in_interrupt());
974 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
978 clear_bit(__IGB_RESETTING
, &adapter
->state
);
981 void igb_reset(struct igb_adapter
*adapter
)
983 struct e1000_hw
*hw
= &adapter
->hw
;
984 struct e1000_mac_info
*mac
= &hw
->mac
;
985 struct e1000_fc_info
*fc
= &hw
->fc
;
986 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
989 /* Repartition Pba for greater than 9k mtu
990 * To take effect CTRL.RST is required.
1002 if ((adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
1003 (mac
->type
< e1000_82576
)) {
1004 /* adjust PBA for jumbo frames */
1005 wr32(E1000_PBA
, pba
);
1007 /* To maintain wire speed transmits, the Tx FIFO should be
1008 * large enough to accommodate two full transmit packets,
1009 * rounded up to the next 1KB and expressed in KB. Likewise,
1010 * the Rx FIFO should be large enough to accommodate at least
1011 * one full receive packet and is similarly rounded up and
1012 * expressed in KB. */
1013 pba
= rd32(E1000_PBA
);
1014 /* upper 16 bits has Tx packet buffer allocation size in KB */
1015 tx_space
= pba
>> 16;
1016 /* lower 16 bits has Rx packet buffer allocation size in KB */
1018 /* the tx fifo also stores 16 bytes of information about the tx
1019 * but don't include ethernet FCS because hardware appends it */
1020 min_tx_space
= (adapter
->max_frame_size
+
1021 sizeof(union e1000_adv_tx_desc
) -
1023 min_tx_space
= ALIGN(min_tx_space
, 1024);
1024 min_tx_space
>>= 10;
1025 /* software strips receive CRC, so leave room for it */
1026 min_rx_space
= adapter
->max_frame_size
;
1027 min_rx_space
= ALIGN(min_rx_space
, 1024);
1028 min_rx_space
>>= 10;
1030 /* If current Tx allocation is less than the min Tx FIFO size,
1031 * and the min Tx FIFO size is less than the current Rx FIFO
1032 * allocation, take space away from current Rx allocation */
1033 if (tx_space
< min_tx_space
&&
1034 ((min_tx_space
- tx_space
) < pba
)) {
1035 pba
= pba
- (min_tx_space
- tx_space
);
1037 /* if short on rx space, rx wins and must trump tx
1039 if (pba
< min_rx_space
)
1042 wr32(E1000_PBA
, pba
);
1045 /* flow control settings */
1046 /* The high water mark must be low enough to fit one full frame
1047 * (or the size used for early receive) above it in the Rx FIFO.
1048 * Set it to the lower of:
1049 * - 90% of the Rx FIFO size, or
1050 * - the full Rx FIFO size minus one full frame */
1051 hwm
= min(((pba
<< 10) * 9 / 10),
1052 ((pba
<< 10) - 2 * adapter
->max_frame_size
));
1054 if (mac
->type
< e1000_82576
) {
1055 fc
->high_water
= hwm
& 0xFFF8; /* 8-byte granularity */
1056 fc
->low_water
= fc
->high_water
- 8;
1058 fc
->high_water
= hwm
& 0xFFF0; /* 16-byte granularity */
1059 fc
->low_water
= fc
->high_water
- 16;
1061 fc
->pause_time
= 0xFFFF;
1063 fc
->type
= fc
->original_type
;
1065 /* disable receive for all VFs and wait one second */
1066 if (adapter
->vfs_allocated_count
) {
1068 for (i
= 0 ; i
< adapter
->vfs_allocated_count
; i
++)
1069 adapter
->vf_data
[i
].clear_to_send
= false;
1071 /* ping all the active vfs to let them know we are going down */
1072 igb_ping_all_vfs(adapter
);
1074 /* disable transmits and receives */
1075 wr32(E1000_VFRE
, 0);
1076 wr32(E1000_VFTE
, 0);
1079 /* Allow time for pending master requests to run */
1080 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
1083 if (adapter
->hw
.mac
.ops
.init_hw(&adapter
->hw
))
1084 dev_err(&adapter
->pdev
->dev
, "Hardware Error\n");
1086 igb_update_mng_vlan(adapter
);
1088 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
1089 wr32(E1000_VET
, ETHERNET_IEEE_VLAN_TYPE
);
1091 igb_reset_adaptive(&adapter
->hw
);
1092 igb_get_phy_info(&adapter
->hw
);
1095 static const struct net_device_ops igb_netdev_ops
= {
1096 .ndo_open
= igb_open
,
1097 .ndo_stop
= igb_close
,
1098 .ndo_start_xmit
= igb_xmit_frame_adv
,
1099 .ndo_get_stats
= igb_get_stats
,
1100 .ndo_set_multicast_list
= igb_set_multi
,
1101 .ndo_set_mac_address
= igb_set_mac
,
1102 .ndo_change_mtu
= igb_change_mtu
,
1103 .ndo_do_ioctl
= igb_ioctl
,
1104 .ndo_tx_timeout
= igb_tx_timeout
,
1105 .ndo_validate_addr
= eth_validate_addr
,
1106 .ndo_vlan_rx_register
= igb_vlan_rx_register
,
1107 .ndo_vlan_rx_add_vid
= igb_vlan_rx_add_vid
,
1108 .ndo_vlan_rx_kill_vid
= igb_vlan_rx_kill_vid
,
1109 #ifdef CONFIG_NET_POLL_CONTROLLER
1110 .ndo_poll_controller
= igb_netpoll
,
1115 * igb_probe - Device Initialization Routine
1116 * @pdev: PCI device information struct
1117 * @ent: entry in igb_pci_tbl
1119 * Returns 0 on success, negative on failure
1121 * igb_probe initializes an adapter identified by a pci_dev structure.
1122 * The OS initialization, configuring of the adapter private structure,
1123 * and a hardware reset occur.
1125 static int __devinit
igb_probe(struct pci_dev
*pdev
,
1126 const struct pci_device_id
*ent
)
1128 struct net_device
*netdev
;
1129 struct igb_adapter
*adapter
;
1130 struct e1000_hw
*hw
;
1131 const struct e1000_info
*ei
= igb_info_tbl
[ent
->driver_data
];
1132 unsigned long mmio_start
, mmio_len
;
1133 int err
, pci_using_dac
;
1134 u16 eeprom_data
= 0;
1135 u16 eeprom_apme_mask
= IGB_EEPROM_APME
;
1138 err
= pci_enable_device_mem(pdev
);
1143 err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
);
1145 err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
);
1149 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
1151 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1153 dev_err(&pdev
->dev
, "No usable DMA "
1154 "configuration, aborting\n");
1160 err
= pci_request_selected_regions(pdev
, pci_select_bars(pdev
,
1166 err
= pci_enable_pcie_error_reporting(pdev
);
1168 dev_err(&pdev
->dev
, "pci_enable_pcie_error_reporting failed "
1170 /* non-fatal, continue */
1173 pci_set_master(pdev
);
1174 pci_save_state(pdev
);
1177 netdev
= alloc_etherdev_mq(sizeof(struct igb_adapter
),
1178 IGB_ABS_MAX_TX_QUEUES
);
1180 goto err_alloc_etherdev
;
1182 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
1184 pci_set_drvdata(pdev
, netdev
);
1185 adapter
= netdev_priv(netdev
);
1186 adapter
->netdev
= netdev
;
1187 adapter
->pdev
= pdev
;
1190 adapter
->msg_enable
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
1192 mmio_start
= pci_resource_start(pdev
, 0);
1193 mmio_len
= pci_resource_len(pdev
, 0);
1196 hw
->hw_addr
= ioremap(mmio_start
, mmio_len
);
1200 netdev
->netdev_ops
= &igb_netdev_ops
;
1201 igb_set_ethtool_ops(netdev
);
1202 netdev
->watchdog_timeo
= 5 * HZ
;
1204 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
1206 netdev
->mem_start
= mmio_start
;
1207 netdev
->mem_end
= mmio_start
+ mmio_len
;
1209 /* PCI config space info */
1210 hw
->vendor_id
= pdev
->vendor
;
1211 hw
->device_id
= pdev
->device
;
1212 hw
->revision_id
= pdev
->revision
;
1213 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1214 hw
->subsystem_device_id
= pdev
->subsystem_device
;
1216 /* setup the private structure */
1218 /* Copy the default MAC, PHY and NVM function pointers */
1219 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
1220 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
1221 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
1222 /* Initialize skew-specific constants */
1223 err
= ei
->get_invariants(hw
);
1227 /* setup the private structure */
1228 err
= igb_sw_init(adapter
);
1232 igb_get_bus_info_pcie(hw
);
1235 switch (hw
->mac
.type
) {
1237 adapter
->flags
|= IGB_FLAG_NEED_CTX_IDX
;
1244 hw
->phy
.autoneg_wait_to_complete
= false;
1245 hw
->mac
.adaptive_ifs
= true;
1247 /* Copper options */
1248 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
1249 hw
->phy
.mdix
= AUTO_ALL_MODES
;
1250 hw
->phy
.disable_polarity_correction
= false;
1251 hw
->phy
.ms_type
= e1000_ms_hw_default
;
1254 if (igb_check_reset_block(hw
))
1255 dev_info(&pdev
->dev
,
1256 "PHY reset is blocked due to SOL/IDER session.\n");
1258 netdev
->features
= NETIF_F_SG
|
1260 NETIF_F_HW_VLAN_TX
|
1261 NETIF_F_HW_VLAN_RX
|
1262 NETIF_F_HW_VLAN_FILTER
;
1264 netdev
->features
|= NETIF_F_IPV6_CSUM
;
1265 netdev
->features
|= NETIF_F_TSO
;
1266 netdev
->features
|= NETIF_F_TSO6
;
1268 netdev
->features
|= NETIF_F_GRO
;
1270 netdev
->vlan_features
|= NETIF_F_TSO
;
1271 netdev
->vlan_features
|= NETIF_F_TSO6
;
1272 netdev
->vlan_features
|= NETIF_F_IP_CSUM
;
1273 netdev
->vlan_features
|= NETIF_F_SG
;
1276 netdev
->features
|= NETIF_F_HIGHDMA
;
1278 adapter
->en_mng_pt
= igb_enable_mng_pass_thru(&adapter
->hw
);
1280 /* before reading the NVM, reset the controller to put the device in a
1281 * known good starting state */
1282 hw
->mac
.ops
.reset_hw(hw
);
1284 /* make sure the NVM is good */
1285 if (igb_validate_nvm_checksum(hw
) < 0) {
1286 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
1291 /* copy the MAC address out of the NVM */
1292 if (hw
->mac
.ops
.read_mac_addr(hw
))
1293 dev_err(&pdev
->dev
, "NVM Read Error\n");
1295 memcpy(netdev
->dev_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1296 memcpy(netdev
->perm_addr
, hw
->mac
.addr
, netdev
->addr_len
);
1298 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1299 dev_err(&pdev
->dev
, "Invalid MAC Address\n");
1304 init_timer(&adapter
->watchdog_timer
);
1305 adapter
->watchdog_timer
.function
= &igb_watchdog
;
1306 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1308 init_timer(&adapter
->phy_info_timer
);
1309 adapter
->phy_info_timer
.function
= &igb_update_phy_info
;
1310 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
1312 INIT_WORK(&adapter
->reset_task
, igb_reset_task
);
1313 INIT_WORK(&adapter
->watchdog_task
, igb_watchdog_task
);
1315 /* Initialize link properties that are user-changeable */
1316 adapter
->fc_autoneg
= true;
1317 hw
->mac
.autoneg
= true;
1318 hw
->phy
.autoneg_advertised
= 0x2f;
1320 hw
->fc
.original_type
= e1000_fc_default
;
1321 hw
->fc
.type
= e1000_fc_default
;
1323 adapter
->itr_setting
= IGB_DEFAULT_ITR
;
1324 adapter
->itr
= IGB_START_ITR
;
1326 igb_validate_mdi_setting(hw
);
1328 adapter
->rx_csum
= 1;
1330 /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
1331 * enable the ACPI Magic Packet filter
1334 if (hw
->bus
.func
== 0)
1335 hw
->nvm
.ops
.read(hw
, NVM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
1336 else if (hw
->bus
.func
== 1)
1337 hw
->nvm
.ops
.read(hw
, NVM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
1339 if (eeprom_data
& eeprom_apme_mask
)
1340 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1342 /* now that we have the eeprom settings, apply the special cases where
1343 * the eeprom may be wrong or the board simply won't support wake on
1344 * lan on a particular port */
1345 switch (pdev
->device
) {
1346 case E1000_DEV_ID_82575GB_QUAD_COPPER
:
1347 adapter
->eeprom_wol
= 0;
1349 case E1000_DEV_ID_82575EB_FIBER_SERDES
:
1350 case E1000_DEV_ID_82576_FIBER
:
1351 case E1000_DEV_ID_82576_SERDES
:
1352 /* Wake events only supported on port A for dual fiber
1353 * regardless of eeprom setting */
1354 if (rd32(E1000_STATUS
) & E1000_STATUS_FUNC_1
)
1355 adapter
->eeprom_wol
= 0;
1357 case E1000_DEV_ID_82576_QUAD_COPPER
:
1358 /* if quad port adapter, disable WoL on all but port A */
1359 if (global_quad_port_a
!= 0)
1360 adapter
->eeprom_wol
= 0;
1362 adapter
->flags
|= IGB_FLAG_QUAD_PORT_A
;
1363 /* Reset for multiple quad port adapters */
1364 if (++global_quad_port_a
== 4)
1365 global_quad_port_a
= 0;
1369 /* initialize the wol settings based on the eeprom settings */
1370 adapter
->wol
= adapter
->eeprom_wol
;
1371 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
1373 /* reset the hardware with the new settings */
1376 /* let the f/w know that the h/w is now under the control of the
1378 igb_get_hw_control(adapter
);
1380 /* tell the stack to leave us alone until igb_open() is called */
1381 netif_carrier_off(netdev
);
1382 netif_tx_stop_all_queues(netdev
);
1384 strcpy(netdev
->name
, "eth%d");
1385 err
= register_netdev(netdev
);
1389 #ifdef CONFIG_PCI_IOV
1390 /* since iov functionality isn't critical to base device function we
1391 * can accept failure. If it fails we don't allow iov to be enabled */
1392 if (hw
->mac
.type
== e1000_82576
) {
1393 err
= pci_enable_sriov(pdev
, 0);
1395 err
= device_create_file(&netdev
->dev
,
1398 dev_err(&pdev
->dev
, "Failed to initialize IOV\n");
1402 #ifdef CONFIG_IGB_DCA
1403 if (dca_add_requester(&pdev
->dev
) == 0) {
1404 adapter
->flags
|= IGB_FLAG_DCA_ENABLED
;
1405 dev_info(&pdev
->dev
, "DCA enabled\n");
1406 /* Always use CB2 mode, difference is masked
1407 * in the CB driver. */
1408 wr32(E1000_DCA_CTRL
, E1000_DCA_CTRL_DCA_MODE_CB2
);
1409 igb_setup_dca(adapter
);
1414 * Initialize hardware timer: we keep it running just in case
1415 * that some program needs it later on.
1417 memset(&adapter
->cycles
, 0, sizeof(adapter
->cycles
));
1418 adapter
->cycles
.read
= igb_read_clock
;
1419 adapter
->cycles
.mask
= CLOCKSOURCE_MASK(64);
1420 adapter
->cycles
.mult
= 1;
1421 adapter
->cycles
.shift
= IGB_TSYNC_SHIFT
;
1424 IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS
* IGB_TSYNC_SCALE
);
1427 * Avoid rollover while we initialize by resetting the time counter.
1429 wr32(E1000_SYSTIML
, 0x00000000);
1430 wr32(E1000_SYSTIMH
, 0x00000000);
1433 * Set registers so that rollover occurs soon to test this.
1435 wr32(E1000_SYSTIML
, 0x00000000);
1436 wr32(E1000_SYSTIMH
, 0xFF800000);
1439 timecounter_init(&adapter
->clock
,
1441 ktime_to_ns(ktime_get_real()));
1444 * Synchronize our NIC clock against system wall clock. NIC
1445 * time stamp reading requires ~3us per sample, each sample
1446 * was pretty stable even under load => only require 10
1447 * samples for each offset comparison.
1449 memset(&adapter
->compare
, 0, sizeof(adapter
->compare
));
1450 adapter
->compare
.source
= &adapter
->clock
;
1451 adapter
->compare
.target
= ktime_get_real
;
1452 adapter
->compare
.num_samples
= 10;
1453 timecompare_update(&adapter
->compare
, 0);
1459 "igb: %s: hw %p initialized timer\n",
1460 igb_get_time_str(adapter
, buffer
),
1465 dev_info(&pdev
->dev
, "Intel(R) Gigabit Ethernet Network Connection\n");
1466 /* print bus type/speed/width info */
1467 dev_info(&pdev
->dev
, "%s: (PCIe:%s:%s) %pM\n",
1469 ((hw
->bus
.speed
== e1000_bus_speed_2500
)
1470 ? "2.5Gb/s" : "unknown"),
1471 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
)
1472 ? "Width x4" : (hw
->bus
.width
== e1000_bus_width_pcie_x1
)
1473 ? "Width x1" : "unknown"),
1476 igb_read_part_num(hw
, &part_num
);
1477 dev_info(&pdev
->dev
, "%s: PBA No: %06x-%03x\n", netdev
->name
,
1478 (part_num
>> 8), (part_num
& 0xff));
1480 dev_info(&pdev
->dev
,
1481 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
1482 adapter
->msix_entries
? "MSI-X" :
1483 (adapter
->flags
& IGB_FLAG_HAS_MSI
) ? "MSI" : "legacy",
1484 adapter
->num_rx_queues
, adapter
->num_tx_queues
);
1489 igb_release_hw_control(adapter
);
1491 if (!igb_check_reset_block(hw
))
1494 if (hw
->flash_address
)
1495 iounmap(hw
->flash_address
);
1497 igb_free_queues(adapter
);
1499 iounmap(hw
->hw_addr
);
1501 free_netdev(netdev
);
1503 pci_release_selected_regions(pdev
, pci_select_bars(pdev
,
1507 pci_disable_device(pdev
);
1512 * igb_remove - Device Removal Routine
1513 * @pdev: PCI device information struct
1515 * igb_remove is called by the PCI subsystem to alert the driver
1516 * that it should release a PCI device. The could be caused by a
1517 * Hot-Plug event, or because the driver is going to be removed from
1520 static void __devexit
igb_remove(struct pci_dev
*pdev
)
1522 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1523 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1524 struct e1000_hw
*hw
= &adapter
->hw
;
1527 /* flush_scheduled work may reschedule our watchdog task, so
1528 * explicitly disable watchdog tasks from being rescheduled */
1529 set_bit(__IGB_DOWN
, &adapter
->state
);
1530 del_timer_sync(&adapter
->watchdog_timer
);
1531 del_timer_sync(&adapter
->phy_info_timer
);
1533 flush_scheduled_work();
1535 #ifdef CONFIG_IGB_DCA
1536 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
) {
1537 dev_info(&pdev
->dev
, "DCA disabled\n");
1538 dca_remove_requester(&pdev
->dev
);
1539 adapter
->flags
&= ~IGB_FLAG_DCA_ENABLED
;
1540 wr32(E1000_DCA_CTRL
, E1000_DCA_CTRL_DCA_MODE_DISABLE
);
1544 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1545 * would have already happened in close and is redundant. */
1546 igb_release_hw_control(adapter
);
1548 unregister_netdev(netdev
);
1550 if (!igb_check_reset_block(&adapter
->hw
))
1551 igb_reset_phy(&adapter
->hw
);
1553 igb_reset_interrupt_capability(adapter
);
1555 igb_free_queues(adapter
);
1557 #ifdef CONFIG_PCI_IOV
1558 /* reclaim resources allocated to VFs */
1559 if (adapter
->vf_data
) {
1560 /* disable iov and allow time for transactions to clear */
1561 pci_disable_sriov(pdev
);
1564 kfree(adapter
->vf_data
);
1565 adapter
->vf_data
= NULL
;
1566 wr32(E1000_IOVCTL
, E1000_IOVCTL_REUSE_VFQ
);
1568 dev_info(&pdev
->dev
, "IOV Disabled\n");
1571 iounmap(hw
->hw_addr
);
1572 if (hw
->flash_address
)
1573 iounmap(hw
->flash_address
);
1574 pci_release_selected_regions(pdev
, pci_select_bars(pdev
,
1577 free_netdev(netdev
);
1579 err
= pci_disable_pcie_error_reporting(pdev
);
1582 "pci_disable_pcie_error_reporting failed 0x%x\n", err
);
1584 pci_disable_device(pdev
);
1588 * igb_sw_init - Initialize general software structures (struct igb_adapter)
1589 * @adapter: board private structure to initialize
1591 * igb_sw_init initializes the Adapter private data structure.
1592 * Fields are initialized based on PCI device information and
1593 * OS network device settings (MTU size).
1595 static int __devinit
igb_sw_init(struct igb_adapter
*adapter
)
1597 struct e1000_hw
*hw
= &adapter
->hw
;
1598 struct net_device
*netdev
= adapter
->netdev
;
1599 struct pci_dev
*pdev
= adapter
->pdev
;
1601 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->bus
.pci_cmd_word
);
1603 adapter
->tx_ring_count
= IGB_DEFAULT_TXD
;
1604 adapter
->rx_ring_count
= IGB_DEFAULT_RXD
;
1605 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1606 adapter
->rx_ps_hdr_size
= 0; /* disable packet split */
1607 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
1608 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
1610 /* This call may decrease the number of queues depending on
1611 * interrupt mode. */
1612 igb_set_interrupt_capability(adapter
);
1614 if (igb_alloc_queues(adapter
)) {
1615 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
1619 /* Explicitly disable IRQ since the NIC can be in any state. */
1620 igb_irq_disable(adapter
);
1622 set_bit(__IGB_DOWN
, &adapter
->state
);
1627 * igb_open - Called when a network interface is made active
1628 * @netdev: network interface device structure
1630 * Returns 0 on success, negative value on failure
1632 * The open entry point is called when a network interface is made
1633 * active by the system (IFF_UP). At this point all resources needed
1634 * for transmit and receive operations are allocated, the interrupt
1635 * handler is registered with the OS, the watchdog timer is started,
1636 * and the stack is notified that the interface is ready.
1638 static int igb_open(struct net_device
*netdev
)
1640 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1641 struct e1000_hw
*hw
= &adapter
->hw
;
1645 /* disallow open during test */
1646 if (test_bit(__IGB_TESTING
, &adapter
->state
))
1649 /* allocate transmit descriptors */
1650 err
= igb_setup_all_tx_resources(adapter
);
1654 /* allocate receive descriptors */
1655 err
= igb_setup_all_rx_resources(adapter
);
1659 /* e1000_power_up_phy(adapter); */
1661 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
1662 if ((adapter
->hw
.mng_cookie
.status
&
1663 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
1664 igb_update_mng_vlan(adapter
);
1666 /* before we allocate an interrupt, we must be ready to handle it.
1667 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1668 * as soon as we call pci_request_irq, so we have to setup our
1669 * clean_rx handler before we do so. */
1670 igb_configure(adapter
);
1672 igb_vmm_control(adapter
);
1673 igb_set_rah_pool(hw
, adapter
->vfs_allocated_count
, 0);
1674 igb_set_vmolr(hw
, adapter
->vfs_allocated_count
);
1676 err
= igb_request_irq(adapter
);
1680 /* From here on the code is the same as igb_up() */
1681 clear_bit(__IGB_DOWN
, &adapter
->state
);
1683 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1684 napi_enable(&adapter
->rx_ring
[i
].napi
);
1686 /* Clear any pending interrupts. */
1689 igb_irq_enable(adapter
);
1691 netif_tx_start_all_queues(netdev
);
1693 /* Fire a link status change interrupt to start the watchdog. */
1694 wr32(E1000_ICS
, E1000_ICS_LSC
);
1699 igb_release_hw_control(adapter
);
1700 /* e1000_power_down_phy(adapter); */
1701 igb_free_all_rx_resources(adapter
);
1703 igb_free_all_tx_resources(adapter
);
1711 * igb_close - Disables a network interface
1712 * @netdev: network interface device structure
1714 * Returns 0, this is not allowed to fail
1716 * The close entry point is called when an interface is de-activated
1717 * by the OS. The hardware is still under the driver's control, but
1718 * needs to be disabled. A global MAC reset is issued to stop the
1719 * hardware, and all transmit and receive resources are freed.
1721 static int igb_close(struct net_device
*netdev
)
1723 struct igb_adapter
*adapter
= netdev_priv(netdev
);
1725 WARN_ON(test_bit(__IGB_RESETTING
, &adapter
->state
));
1728 igb_free_irq(adapter
);
1730 igb_free_all_tx_resources(adapter
);
1731 igb_free_all_rx_resources(adapter
);
1733 /* kill manageability vlan ID if supported, but not if a vlan with
1734 * the same ID is registered on the host OS (let 8021q kill it) */
1735 if ((adapter
->hw
.mng_cookie
.status
&
1736 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
1738 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
)))
1739 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1745 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
1746 * @adapter: board private structure
1747 * @tx_ring: tx descriptor ring (for a specific queue) to setup
1749 * Return 0 on success, negative on failure
1751 int igb_setup_tx_resources(struct igb_adapter
*adapter
,
1752 struct igb_ring
*tx_ring
)
1754 struct pci_dev
*pdev
= adapter
->pdev
;
1757 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
1758 tx_ring
->buffer_info
= vmalloc(size
);
1759 if (!tx_ring
->buffer_info
)
1761 memset(tx_ring
->buffer_info
, 0, size
);
1763 /* round up to nearest 4K */
1764 tx_ring
->size
= tx_ring
->count
* sizeof(union e1000_adv_tx_desc
);
1765 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
1767 tx_ring
->desc
= pci_alloc_consistent(pdev
, tx_ring
->size
,
1773 tx_ring
->adapter
= adapter
;
1774 tx_ring
->next_to_use
= 0;
1775 tx_ring
->next_to_clean
= 0;
1779 vfree(tx_ring
->buffer_info
);
1780 dev_err(&adapter
->pdev
->dev
,
1781 "Unable to allocate memory for the transmit descriptor ring\n");
1786 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
1787 * (Descriptors) for all queues
1788 * @adapter: board private structure
1790 * Return 0 on success, negative on failure
1792 static int igb_setup_all_tx_resources(struct igb_adapter
*adapter
)
1797 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1798 err
= igb_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1800 dev_err(&adapter
->pdev
->dev
,
1801 "Allocation for Tx Queue %u failed\n", i
);
1802 for (i
--; i
>= 0; i
--)
1803 igb_free_tx_resources(&adapter
->tx_ring
[i
]);
1808 for (i
= 0; i
< IGB_MAX_TX_QUEUES
; i
++) {
1809 r_idx
= i
% adapter
->num_tx_queues
;
1810 adapter
->multi_tx_table
[i
] = &adapter
->tx_ring
[r_idx
];
1816 * igb_configure_tx - Configure transmit Unit after Reset
1817 * @adapter: board private structure
1819 * Configure the Tx unit of the MAC after a reset.
1821 static void igb_configure_tx(struct igb_adapter
*adapter
)
1824 struct e1000_hw
*hw
= &adapter
->hw
;
1829 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1830 struct igb_ring
*ring
= &adapter
->tx_ring
[i
];
1832 wr32(E1000_TDLEN(j
),
1833 ring
->count
* sizeof(union e1000_adv_tx_desc
));
1835 wr32(E1000_TDBAL(j
),
1836 tdba
& 0x00000000ffffffffULL
);
1837 wr32(E1000_TDBAH(j
), tdba
>> 32);
1839 ring
->head
= E1000_TDH(j
);
1840 ring
->tail
= E1000_TDT(j
);
1841 writel(0, hw
->hw_addr
+ ring
->tail
);
1842 writel(0, hw
->hw_addr
+ ring
->head
);
1843 txdctl
= rd32(E1000_TXDCTL(j
));
1844 txdctl
|= E1000_TXDCTL_QUEUE_ENABLE
;
1845 wr32(E1000_TXDCTL(j
), txdctl
);
1847 /* Turn off Relaxed Ordering on head write-backs. The
1848 * writebacks MUST be delivered in order or it will
1849 * completely screw up our bookeeping.
1851 txctrl
= rd32(E1000_DCA_TXCTRL(j
));
1852 txctrl
&= ~E1000_DCA_TXCTRL_TX_WB_RO_EN
;
1853 wr32(E1000_DCA_TXCTRL(j
), txctrl
);
1856 /* disable queue 0 to prevent tail bump w/o re-configuration */
1857 if (adapter
->vfs_allocated_count
)
1858 wr32(E1000_TXDCTL(0), 0);
1860 /* Program the Transmit Control Register */
1861 tctl
= rd32(E1000_TCTL
);
1862 tctl
&= ~E1000_TCTL_CT
;
1863 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1864 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1866 igb_config_collision_dist(hw
);
1868 /* Setup Transmit Descriptor Settings for eop descriptor */
1869 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_RS
;
1871 /* Enable transmits */
1872 tctl
|= E1000_TCTL_EN
;
1874 wr32(E1000_TCTL
, tctl
);
1878 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
1879 * @adapter: board private structure
1880 * @rx_ring: rx descriptor ring (for a specific queue) to setup
1882 * Returns 0 on success, negative on failure
1884 int igb_setup_rx_resources(struct igb_adapter
*adapter
,
1885 struct igb_ring
*rx_ring
)
1887 struct pci_dev
*pdev
= adapter
->pdev
;
1890 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
1891 rx_ring
->buffer_info
= vmalloc(size
);
1892 if (!rx_ring
->buffer_info
)
1894 memset(rx_ring
->buffer_info
, 0, size
);
1896 desc_len
= sizeof(union e1000_adv_rx_desc
);
1898 /* Round up to nearest 4K */
1899 rx_ring
->size
= rx_ring
->count
* desc_len
;
1900 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
1902 rx_ring
->desc
= pci_alloc_consistent(pdev
, rx_ring
->size
,
1908 rx_ring
->next_to_clean
= 0;
1909 rx_ring
->next_to_use
= 0;
1911 rx_ring
->adapter
= adapter
;
1916 vfree(rx_ring
->buffer_info
);
1917 dev_err(&adapter
->pdev
->dev
, "Unable to allocate memory for "
1918 "the receive descriptor ring\n");
1923 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
1924 * (Descriptors) for all queues
1925 * @adapter: board private structure
1927 * Return 0 on success, negative on failure
1929 static int igb_setup_all_rx_resources(struct igb_adapter
*adapter
)
1933 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1934 err
= igb_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1936 dev_err(&adapter
->pdev
->dev
,
1937 "Allocation for Rx Queue %u failed\n", i
);
1938 for (i
--; i
>= 0; i
--)
1939 igb_free_rx_resources(&adapter
->rx_ring
[i
]);
1948 * igb_setup_rctl - configure the receive control registers
1949 * @adapter: Board private structure
1951 static void igb_setup_rctl(struct igb_adapter
*adapter
)
1953 struct e1000_hw
*hw
= &adapter
->hw
;
1958 rctl
= rd32(E1000_RCTL
);
1960 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1961 rctl
&= ~(E1000_RCTL_LBM_TCVR
| E1000_RCTL_LBM_MAC
);
1963 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
| E1000_RCTL_RDMTS_HALF
|
1964 (hw
->mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1967 * enable stripping of CRC. It's unlikely this will break BMC
1968 * redirection as it did with e1000. Newer features require
1969 * that the HW strips the CRC.
1971 rctl
|= E1000_RCTL_SECRC
;
1974 * disable store bad packets and clear size bits.
1976 rctl
&= ~(E1000_RCTL_SBP
| E1000_RCTL_SZ_256
);
1978 /* enable LPE when to prevent packets larger than max_frame_size */
1979 rctl
|= E1000_RCTL_LPE
;
1981 /* Setup buffer sizes */
1982 switch (adapter
->rx_buffer_len
) {
1983 case IGB_RXBUFFER_256
:
1984 rctl
|= E1000_RCTL_SZ_256
;
1986 case IGB_RXBUFFER_512
:
1987 rctl
|= E1000_RCTL_SZ_512
;
1990 srrctl
= ALIGN(adapter
->rx_buffer_len
, 1024)
1991 >> E1000_SRRCTL_BSIZEPKT_SHIFT
;
1995 /* 82575 and greater support packet-split where the protocol
1996 * header is placed in skb->data and the packet data is
1997 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1998 * In the case of a non-split, skb->data is linearly filled,
1999 * followed by the page buffers. Therefore, skb->data is
2000 * sized to hold the largest protocol header.
2002 /* allocations using alloc_page take too long for regular MTU
2003 * so only enable packet split for jumbo frames */
2004 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
2005 adapter
->rx_ps_hdr_size
= IGB_RXBUFFER_128
;
2006 srrctl
|= adapter
->rx_ps_hdr_size
<<
2007 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT
;
2008 srrctl
|= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS
;
2010 adapter
->rx_ps_hdr_size
= 0;
2011 srrctl
|= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF
;
2014 /* Attention!!! For SR-IOV PF driver operations you must enable
2015 * queue drop for all VF and PF queues to prevent head of line blocking
2016 * if an un-trusted VF does not provide descriptors to hardware.
2018 if (adapter
->vfs_allocated_count
) {
2021 j
= adapter
->rx_ring
[0].reg_idx
;
2023 /* set all queue drop enable bits */
2024 wr32(E1000_QDE
, ALL_QUEUES
);
2025 srrctl
|= E1000_SRRCTL_DROP_EN
;
2027 /* disable queue 0 to prevent tail write w/o re-config */
2028 wr32(E1000_RXDCTL(0), 0);
2030 vmolr
= rd32(E1000_VMOLR(j
));
2031 if (rctl
& E1000_RCTL_LPE
)
2032 vmolr
|= E1000_VMOLR_LPE
;
2033 if (adapter
->num_rx_queues
> 0)
2034 vmolr
|= E1000_VMOLR_RSSE
;
2035 wr32(E1000_VMOLR(j
), vmolr
);
2038 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2039 j
= adapter
->rx_ring
[i
].reg_idx
;
2040 wr32(E1000_SRRCTL(j
), srrctl
);
2043 wr32(E1000_RCTL
, rctl
);
2047 * igb_rlpml_set - set maximum receive packet size
2048 * @adapter: board private structure
2050 * Configure maximum receivable packet size.
2052 static void igb_rlpml_set(struct igb_adapter
*adapter
)
2054 u32 max_frame_size
= adapter
->max_frame_size
;
2055 struct e1000_hw
*hw
= &adapter
->hw
;
2056 u16 pf_id
= adapter
->vfs_allocated_count
;
2059 max_frame_size
+= VLAN_TAG_SIZE
;
2061 /* if vfs are enabled we set RLPML to the largest possible request
2062 * size and set the VMOLR RLPML to the size we need */
2064 igb_set_vf_rlpml(adapter
, max_frame_size
, pf_id
);
2065 max_frame_size
= MAX_STD_JUMBO_FRAME_SIZE
+ VLAN_TAG_SIZE
;
2068 wr32(E1000_RLPML
, max_frame_size
);
2072 * igb_configure_vt_default_pool - Configure VT default pool
2073 * @adapter: board private structure
2075 * Configure the default pool
2077 static void igb_configure_vt_default_pool(struct igb_adapter
*adapter
)
2079 struct e1000_hw
*hw
= &adapter
->hw
;
2080 u16 pf_id
= adapter
->vfs_allocated_count
;
2083 /* not in sr-iov mode - do nothing */
2087 vtctl
= rd32(E1000_VT_CTL
);
2088 vtctl
&= ~(E1000_VT_CTL_DEFAULT_POOL_MASK
|
2089 E1000_VT_CTL_DISABLE_DEF_POOL
);
2090 vtctl
|= pf_id
<< E1000_VT_CTL_DEFAULT_POOL_SHIFT
;
2091 wr32(E1000_VT_CTL
, vtctl
);
2095 * igb_configure_rx - Configure receive Unit after Reset
2096 * @adapter: board private structure
2098 * Configure the Rx unit of the MAC after a reset.
2100 static void igb_configure_rx(struct igb_adapter
*adapter
)
2103 struct e1000_hw
*hw
= &adapter
->hw
;
2108 /* disable receives while setting up the descriptors */
2109 rctl
= rd32(E1000_RCTL
);
2110 wr32(E1000_RCTL
, rctl
& ~E1000_RCTL_EN
);
2114 if (adapter
->itr_setting
> 3)
2115 wr32(E1000_ITR
, adapter
->itr
);
2117 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2118 * the Base and Length of the Rx Descriptor Ring */
2119 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
2120 struct igb_ring
*ring
= &adapter
->rx_ring
[i
];
2121 int j
= ring
->reg_idx
;
2123 wr32(E1000_RDBAL(j
),
2124 rdba
& 0x00000000ffffffffULL
);
2125 wr32(E1000_RDBAH(j
), rdba
>> 32);
2126 wr32(E1000_RDLEN(j
),
2127 ring
->count
* sizeof(union e1000_adv_rx_desc
));
2129 ring
->head
= E1000_RDH(j
);
2130 ring
->tail
= E1000_RDT(j
);
2131 writel(0, hw
->hw_addr
+ ring
->tail
);
2132 writel(0, hw
->hw_addr
+ ring
->head
);
2134 rxdctl
= rd32(E1000_RXDCTL(j
));
2135 rxdctl
|= E1000_RXDCTL_QUEUE_ENABLE
;
2136 rxdctl
&= 0xFFF00000;
2137 rxdctl
|= IGB_RX_PTHRESH
;
2138 rxdctl
|= IGB_RX_HTHRESH
<< 8;
2139 rxdctl
|= IGB_RX_WTHRESH
<< 16;
2140 wr32(E1000_RXDCTL(j
), rxdctl
);
2143 if (adapter
->num_rx_queues
> 1) {
2152 get_random_bytes(&random
[0], 40);
2154 if (hw
->mac
.type
>= e1000_82576
)
2158 for (j
= 0; j
< (32 * 4); j
++) {
2160 adapter
->rx_ring
[(j
% adapter
->num_rx_queues
)].reg_idx
<< shift
;
2163 hw
->hw_addr
+ E1000_RETA(0) + (j
& ~3));
2165 if (adapter
->vfs_allocated_count
)
2166 mrqc
= E1000_MRQC_ENABLE_VMDQ_RSS_2Q
;
2168 mrqc
= E1000_MRQC_ENABLE_RSS_4Q
;
2170 /* Fill out hash function seeds */
2171 for (j
= 0; j
< 10; j
++)
2172 array_wr32(E1000_RSSRK(0), j
, random
[j
]);
2174 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
2175 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
2176 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6
|
2177 E1000_MRQC_RSS_FIELD_IPV6_TCP
);
2178 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4_UDP
|
2179 E1000_MRQC_RSS_FIELD_IPV6_UDP
);
2180 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX
|
2181 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
2184 wr32(E1000_MRQC
, mrqc
);
2186 /* Multiqueue and raw packet checksumming are mutually
2187 * exclusive. Note that this not the same as TCP/IP
2188 * checksumming, which works fine. */
2189 rxcsum
= rd32(E1000_RXCSUM
);
2190 rxcsum
|= E1000_RXCSUM_PCSD
;
2191 wr32(E1000_RXCSUM
, rxcsum
);
2193 /* Enable multi-queue for sr-iov */
2194 if (adapter
->vfs_allocated_count
)
2195 wr32(E1000_MRQC
, E1000_MRQC_ENABLE_VMDQ
);
2196 /* Enable Receive Checksum Offload for TCP and UDP */
2197 rxcsum
= rd32(E1000_RXCSUM
);
2198 if (adapter
->rx_csum
)
2199 rxcsum
|= E1000_RXCSUM_TUOFL
| E1000_RXCSUM_IPPCSE
;
2201 rxcsum
&= ~(E1000_RXCSUM_TUOFL
| E1000_RXCSUM_IPPCSE
);
2203 wr32(E1000_RXCSUM
, rxcsum
);
2206 /* Set the default pool for the PF's first queue */
2207 igb_configure_vt_default_pool(adapter
);
2209 igb_rlpml_set(adapter
);
2211 /* Enable Receives */
2212 wr32(E1000_RCTL
, rctl
);
2216 * igb_free_tx_resources - Free Tx Resources per Queue
2217 * @tx_ring: Tx descriptor ring for a specific queue
2219 * Free all transmit software resources
2221 void igb_free_tx_resources(struct igb_ring
*tx_ring
)
2223 struct pci_dev
*pdev
= tx_ring
->adapter
->pdev
;
2225 igb_clean_tx_ring(tx_ring
);
2227 vfree(tx_ring
->buffer_info
);
2228 tx_ring
->buffer_info
= NULL
;
2230 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2232 tx_ring
->desc
= NULL
;
2236 * igb_free_all_tx_resources - Free Tx Resources for All Queues
2237 * @adapter: board private structure
2239 * Free all transmit software resources
2241 static void igb_free_all_tx_resources(struct igb_adapter
*adapter
)
2245 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2246 igb_free_tx_resources(&adapter
->tx_ring
[i
]);
2249 static void igb_unmap_and_free_tx_resource(struct igb_adapter
*adapter
,
2250 struct igb_buffer
*buffer_info
)
2252 if (buffer_info
->dma
) {
2253 pci_unmap_page(adapter
->pdev
,
2255 buffer_info
->length
,
2257 buffer_info
->dma
= 0;
2259 if (buffer_info
->skb
) {
2260 dev_kfree_skb_any(buffer_info
->skb
);
2261 buffer_info
->skb
= NULL
;
2263 buffer_info
->time_stamp
= 0;
2264 buffer_info
->next_to_watch
= 0;
2265 /* buffer_info must be completely set up in the transmit path */
2269 * igb_clean_tx_ring - Free Tx Buffers
2270 * @tx_ring: ring to be cleaned
2272 static void igb_clean_tx_ring(struct igb_ring
*tx_ring
)
2274 struct igb_adapter
*adapter
= tx_ring
->adapter
;
2275 struct igb_buffer
*buffer_info
;
2279 if (!tx_ring
->buffer_info
)
2281 /* Free all the Tx ring sk_buffs */
2283 for (i
= 0; i
< tx_ring
->count
; i
++) {
2284 buffer_info
= &tx_ring
->buffer_info
[i
];
2285 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
2288 size
= sizeof(struct igb_buffer
) * tx_ring
->count
;
2289 memset(tx_ring
->buffer_info
, 0, size
);
2291 /* Zero out the descriptor ring */
2293 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2295 tx_ring
->next_to_use
= 0;
2296 tx_ring
->next_to_clean
= 0;
2298 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->head
);
2299 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
2303 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
2304 * @adapter: board private structure
2306 static void igb_clean_all_tx_rings(struct igb_adapter
*adapter
)
2310 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2311 igb_clean_tx_ring(&adapter
->tx_ring
[i
]);
2315 * igb_free_rx_resources - Free Rx Resources
2316 * @rx_ring: ring to clean the resources from
2318 * Free all receive software resources
2320 void igb_free_rx_resources(struct igb_ring
*rx_ring
)
2322 struct pci_dev
*pdev
= rx_ring
->adapter
->pdev
;
2324 igb_clean_rx_ring(rx_ring
);
2326 vfree(rx_ring
->buffer_info
);
2327 rx_ring
->buffer_info
= NULL
;
2329 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2331 rx_ring
->desc
= NULL
;
2335 * igb_free_all_rx_resources - Free Rx Resources for All Queues
2336 * @adapter: board private structure
2338 * Free all receive software resources
2340 static void igb_free_all_rx_resources(struct igb_adapter
*adapter
)
2344 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2345 igb_free_rx_resources(&adapter
->rx_ring
[i
]);
2349 * igb_clean_rx_ring - Free Rx Buffers per Queue
2350 * @rx_ring: ring to free buffers from
2352 static void igb_clean_rx_ring(struct igb_ring
*rx_ring
)
2354 struct igb_adapter
*adapter
= rx_ring
->adapter
;
2355 struct igb_buffer
*buffer_info
;
2356 struct pci_dev
*pdev
= adapter
->pdev
;
2360 if (!rx_ring
->buffer_info
)
2362 /* Free all the Rx ring sk_buffs */
2363 for (i
= 0; i
< rx_ring
->count
; i
++) {
2364 buffer_info
= &rx_ring
->buffer_info
[i
];
2365 if (buffer_info
->dma
) {
2366 if (adapter
->rx_ps_hdr_size
)
2367 pci_unmap_single(pdev
, buffer_info
->dma
,
2368 adapter
->rx_ps_hdr_size
,
2369 PCI_DMA_FROMDEVICE
);
2371 pci_unmap_single(pdev
, buffer_info
->dma
,
2372 adapter
->rx_buffer_len
,
2373 PCI_DMA_FROMDEVICE
);
2374 buffer_info
->dma
= 0;
2377 if (buffer_info
->skb
) {
2378 dev_kfree_skb(buffer_info
->skb
);
2379 buffer_info
->skb
= NULL
;
2381 if (buffer_info
->page
) {
2382 if (buffer_info
->page_dma
)
2383 pci_unmap_page(pdev
, buffer_info
->page_dma
,
2385 PCI_DMA_FROMDEVICE
);
2386 put_page(buffer_info
->page
);
2387 buffer_info
->page
= NULL
;
2388 buffer_info
->page_dma
= 0;
2389 buffer_info
->page_offset
= 0;
2393 size
= sizeof(struct igb_buffer
) * rx_ring
->count
;
2394 memset(rx_ring
->buffer_info
, 0, size
);
2396 /* Zero out the descriptor ring */
2397 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2399 rx_ring
->next_to_clean
= 0;
2400 rx_ring
->next_to_use
= 0;
2402 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->head
);
2403 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
2407 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
2408 * @adapter: board private structure
2410 static void igb_clean_all_rx_rings(struct igb_adapter
*adapter
)
2414 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2415 igb_clean_rx_ring(&adapter
->rx_ring
[i
]);
2419 * igb_set_mac - Change the Ethernet Address of the NIC
2420 * @netdev: network interface device structure
2421 * @p: pointer to an address structure
2423 * Returns 0 on success, negative on failure
2425 static int igb_set_mac(struct net_device
*netdev
, void *p
)
2427 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2428 struct e1000_hw
*hw
= &adapter
->hw
;
2429 struct sockaddr
*addr
= p
;
2431 if (!is_valid_ether_addr(addr
->sa_data
))
2432 return -EADDRNOTAVAIL
;
2434 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2435 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
2437 hw
->mac
.ops
.rar_set(hw
, hw
->mac
.addr
, 0);
2439 igb_set_rah_pool(hw
, adapter
->vfs_allocated_count
, 0);
2445 * igb_set_multi - Multicast and Promiscuous mode set
2446 * @netdev: network interface device structure
2448 * The set_multi entry point is called whenever the multicast address
2449 * list or the network interface flags are updated. This routine is
2450 * responsible for configuring the hardware for proper multicast,
2451 * promiscuous mode, and all-multi behavior.
2453 static void igb_set_multi(struct net_device
*netdev
)
2455 struct igb_adapter
*adapter
= netdev_priv(netdev
);
2456 struct e1000_hw
*hw
= &adapter
->hw
;
2457 struct e1000_mac_info
*mac
= &hw
->mac
;
2458 struct dev_mc_list
*mc_ptr
;
2463 /* Check for Promiscuous and All Multicast modes */
2465 rctl
= rd32(E1000_RCTL
);
2467 if (netdev
->flags
& IFF_PROMISC
) {
2468 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2469 rctl
&= ~E1000_RCTL_VFE
;
2471 if (netdev
->flags
& IFF_ALLMULTI
) {
2472 rctl
|= E1000_RCTL_MPE
;
2473 rctl
&= ~E1000_RCTL_UPE
;
2475 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2476 rctl
|= E1000_RCTL_VFE
;
2478 wr32(E1000_RCTL
, rctl
);
2480 if (!netdev
->mc_count
) {
2481 /* nothing to program, so clear mc list */
2482 igb_update_mc_addr_list(hw
, NULL
, 0, 1,
2483 mac
->rar_entry_count
);
2487 mta_list
= kzalloc(netdev
->mc_count
* 6, GFP_ATOMIC
);
2491 /* The shared function expects a packed array of only addresses. */
2492 mc_ptr
= netdev
->mc_list
;
2494 for (i
= 0; i
< netdev
->mc_count
; i
++) {
2497 memcpy(mta_list
+ (i
*ETH_ALEN
), mc_ptr
->dmi_addr
, ETH_ALEN
);
2498 mc_ptr
= mc_ptr
->next
;
2500 igb_update_mc_addr_list(hw
, mta_list
, i
,
2501 adapter
->vfs_allocated_count
+ 1,
2502 mac
->rar_entry_count
);
2504 igb_set_mc_list_pools(adapter
, i
, mac
->rar_entry_count
);
2505 igb_restore_vf_multicasts(adapter
);
2510 /* Need to wait a few seconds after link up to get diagnostic information from
2512 static void igb_update_phy_info(unsigned long data
)
2514 struct igb_adapter
*adapter
= (struct igb_adapter
*) data
;
2515 igb_get_phy_info(&adapter
->hw
);
2519 * igb_has_link - check shared code for link and determine up/down
2520 * @adapter: pointer to driver private info
2522 static bool igb_has_link(struct igb_adapter
*adapter
)
2524 struct e1000_hw
*hw
= &adapter
->hw
;
2525 bool link_active
= false;
2528 /* get_link_status is set on LSC (link status) interrupt or
2529 * rx sequence error interrupt. get_link_status will stay
2530 * false until the e1000_check_for_link establishes link
2531 * for copper adapters ONLY
2533 switch (hw
->phy
.media_type
) {
2534 case e1000_media_type_copper
:
2535 if (hw
->mac
.get_link_status
) {
2536 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2537 link_active
= !hw
->mac
.get_link_status
;
2542 case e1000_media_type_fiber
:
2543 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2544 link_active
= !!(rd32(E1000_STATUS
) & E1000_STATUS_LU
);
2546 case e1000_media_type_internal_serdes
:
2547 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
2548 link_active
= hw
->mac
.serdes_has_link
;
2551 case e1000_media_type_unknown
:
2559 * igb_watchdog - Timer Call-back
2560 * @data: pointer to adapter cast into an unsigned long
2562 static void igb_watchdog(unsigned long data
)
2564 struct igb_adapter
*adapter
= (struct igb_adapter
*)data
;
2565 /* Do the rest outside of interrupt context */
2566 schedule_work(&adapter
->watchdog_task
);
2569 static void igb_watchdog_task(struct work_struct
*work
)
2571 struct igb_adapter
*adapter
= container_of(work
,
2572 struct igb_adapter
, watchdog_task
);
2573 struct e1000_hw
*hw
= &adapter
->hw
;
2574 struct net_device
*netdev
= adapter
->netdev
;
2575 struct igb_ring
*tx_ring
= adapter
->tx_ring
;
2580 link
= igb_has_link(adapter
);
2581 if ((netif_carrier_ok(netdev
)) && link
)
2585 if (!netif_carrier_ok(netdev
)) {
2587 hw
->mac
.ops
.get_speed_and_duplex(&adapter
->hw
,
2588 &adapter
->link_speed
,
2589 &adapter
->link_duplex
);
2591 ctrl
= rd32(E1000_CTRL
);
2592 /* Links status message must follow this format */
2593 printk(KERN_INFO
"igb: %s NIC Link is Up %d Mbps %s, "
2594 "Flow Control: %s\n",
2596 adapter
->link_speed
,
2597 adapter
->link_duplex
== FULL_DUPLEX
?
2598 "Full Duplex" : "Half Duplex",
2599 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2600 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2601 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2602 E1000_CTRL_TFCE
) ? "TX" : "None")));
2604 /* tweak tx_queue_len according to speed/duplex and
2605 * adjust the timeout factor */
2606 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2607 adapter
->tx_timeout_factor
= 1;
2608 switch (adapter
->link_speed
) {
2610 netdev
->tx_queue_len
= 10;
2611 adapter
->tx_timeout_factor
= 14;
2614 netdev
->tx_queue_len
= 100;
2615 /* maybe add some timeout factor ? */
2619 netif_carrier_on(netdev
);
2620 netif_tx_wake_all_queues(netdev
);
2622 igb_ping_all_vfs(adapter
);
2624 /* link state has changed, schedule phy info update */
2625 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2626 mod_timer(&adapter
->phy_info_timer
,
2627 round_jiffies(jiffies
+ 2 * HZ
));
2630 if (netif_carrier_ok(netdev
)) {
2631 adapter
->link_speed
= 0;
2632 adapter
->link_duplex
= 0;
2633 /* Links status message must follow this format */
2634 printk(KERN_INFO
"igb: %s NIC Link is Down\n",
2636 netif_carrier_off(netdev
);
2637 netif_tx_stop_all_queues(netdev
);
2639 igb_ping_all_vfs(adapter
);
2641 /* link state has changed, schedule phy info update */
2642 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2643 mod_timer(&adapter
->phy_info_timer
,
2644 round_jiffies(jiffies
+ 2 * HZ
));
2649 igb_update_stats(adapter
);
2651 hw
->mac
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2652 adapter
->tpt_old
= adapter
->stats
.tpt
;
2653 hw
->mac
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2654 adapter
->colc_old
= adapter
->stats
.colc
;
2656 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
2657 adapter
->gorc_old
= adapter
->stats
.gorc
;
2658 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
2659 adapter
->gotc_old
= adapter
->stats
.gotc
;
2661 igb_update_adaptive(&adapter
->hw
);
2663 if (!netif_carrier_ok(netdev
)) {
2664 if (IGB_DESC_UNUSED(tx_ring
) + 1 < tx_ring
->count
) {
2665 /* We've lost link, so the controller stops DMA,
2666 * but we've got queued Tx work that's never going
2667 * to get done, so reset controller to flush Tx.
2668 * (Do the reset outside of interrupt context). */
2669 adapter
->tx_timeout_count
++;
2670 schedule_work(&adapter
->reset_task
);
2674 /* Cause software interrupt to ensure rx ring is cleaned */
2675 if (adapter
->msix_entries
) {
2676 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2677 eics
|= adapter
->rx_ring
[i
].eims_value
;
2678 wr32(E1000_EICS
, eics
);
2680 wr32(E1000_ICS
, E1000_ICS_RXDMT0
);
2683 /* Force detection of hung controller every watchdog period */
2684 tx_ring
->detect_tx_hung
= true;
2686 /* Reset the timer */
2687 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
2688 mod_timer(&adapter
->watchdog_timer
,
2689 round_jiffies(jiffies
+ 2 * HZ
));
2692 enum latency_range
{
2696 latency_invalid
= 255
2701 * igb_update_ring_itr - update the dynamic ITR value based on packet size
2703 * Stores a new ITR value based on strictly on packet size. This
2704 * algorithm is less sophisticated than that used in igb_update_itr,
2705 * due to the difficulty of synchronizing statistics across multiple
2706 * receive rings. The divisors and thresholds used by this fuction
2707 * were determined based on theoretical maximum wire speed and testing
2708 * data, in order to minimize response time while increasing bulk
2710 * This functionality is controlled by the InterruptThrottleRate module
2711 * parameter (see igb_param.c)
2712 * NOTE: This function is called only when operating in a multiqueue
2713 * receive environment.
2714 * @rx_ring: pointer to ring
2716 static void igb_update_ring_itr(struct igb_ring
*rx_ring
)
2718 int new_val
= rx_ring
->itr_val
;
2719 int avg_wire_size
= 0;
2720 struct igb_adapter
*adapter
= rx_ring
->adapter
;
2722 if (!rx_ring
->total_packets
)
2723 goto clear_counts
; /* no packets, so don't do anything */
2725 /* For non-gigabit speeds, just fix the interrupt rate at 4000
2726 * ints/sec - ITR timer value of 120 ticks.
2728 if (adapter
->link_speed
!= SPEED_1000
) {
2732 avg_wire_size
= rx_ring
->total_bytes
/ rx_ring
->total_packets
;
2734 /* Add 24 bytes to size to account for CRC, preamble, and gap */
2735 avg_wire_size
+= 24;
2737 /* Don't starve jumbo frames */
2738 avg_wire_size
= min(avg_wire_size
, 3000);
2740 /* Give a little boost to mid-size frames */
2741 if ((avg_wire_size
> 300) && (avg_wire_size
< 1200))
2742 new_val
= avg_wire_size
/ 3;
2744 new_val
= avg_wire_size
/ 2;
2747 if (new_val
!= rx_ring
->itr_val
) {
2748 rx_ring
->itr_val
= new_val
;
2749 rx_ring
->set_itr
= 1;
2752 rx_ring
->total_bytes
= 0;
2753 rx_ring
->total_packets
= 0;
2757 * igb_update_itr - update the dynamic ITR value based on statistics
2758 * Stores a new ITR value based on packets and byte
2759 * counts during the last interrupt. The advantage of per interrupt
2760 * computation is faster updates and more accurate ITR for the current
2761 * traffic pattern. Constants in this function were computed
2762 * based on theoretical maximum wire speed and thresholds were set based
2763 * on testing data as well as attempting to minimize response time
2764 * while increasing bulk throughput.
2765 * this functionality is controlled by the InterruptThrottleRate module
2766 * parameter (see igb_param.c)
2767 * NOTE: These calculations are only valid when operating in a single-
2768 * queue environment.
2769 * @adapter: pointer to adapter
2770 * @itr_setting: current adapter->itr
2771 * @packets: the number of packets during this measurement interval
2772 * @bytes: the number of bytes during this measurement interval
2774 static unsigned int igb_update_itr(struct igb_adapter
*adapter
, u16 itr_setting
,
2775 int packets
, int bytes
)
2777 unsigned int retval
= itr_setting
;
2780 goto update_itr_done
;
2782 switch (itr_setting
) {
2783 case lowest_latency
:
2784 /* handle TSO and jumbo frames */
2785 if (bytes
/packets
> 8000)
2786 retval
= bulk_latency
;
2787 else if ((packets
< 5) && (bytes
> 512))
2788 retval
= low_latency
;
2790 case low_latency
: /* 50 usec aka 20000 ints/s */
2791 if (bytes
> 10000) {
2792 /* this if handles the TSO accounting */
2793 if (bytes
/packets
> 8000) {
2794 retval
= bulk_latency
;
2795 } else if ((packets
< 10) || ((bytes
/packets
) > 1200)) {
2796 retval
= bulk_latency
;
2797 } else if ((packets
> 35)) {
2798 retval
= lowest_latency
;
2800 } else if (bytes
/packets
> 2000) {
2801 retval
= bulk_latency
;
2802 } else if (packets
<= 2 && bytes
< 512) {
2803 retval
= lowest_latency
;
2806 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2807 if (bytes
> 25000) {
2809 retval
= low_latency
;
2810 } else if (bytes
< 1500) {
2811 retval
= low_latency
;
2820 static void igb_set_itr(struct igb_adapter
*adapter
)
2823 u32 new_itr
= adapter
->itr
;
2825 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2826 if (adapter
->link_speed
!= SPEED_1000
) {
2832 adapter
->rx_itr
= igb_update_itr(adapter
,
2834 adapter
->rx_ring
->total_packets
,
2835 adapter
->rx_ring
->total_bytes
);
2837 if (adapter
->rx_ring
->buddy
) {
2838 adapter
->tx_itr
= igb_update_itr(adapter
,
2840 adapter
->tx_ring
->total_packets
,
2841 adapter
->tx_ring
->total_bytes
);
2842 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2844 current_itr
= adapter
->rx_itr
;
2847 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2848 if (adapter
->itr_setting
== 3 && current_itr
== lowest_latency
)
2849 current_itr
= low_latency
;
2851 switch (current_itr
) {
2852 /* counts and packets in update_itr are dependent on these numbers */
2853 case lowest_latency
:
2857 new_itr
= 20000; /* aka hwitr = ~200 */
2867 adapter
->rx_ring
->total_bytes
= 0;
2868 adapter
->rx_ring
->total_packets
= 0;
2869 if (adapter
->rx_ring
->buddy
) {
2870 adapter
->rx_ring
->buddy
->total_bytes
= 0;
2871 adapter
->rx_ring
->buddy
->total_packets
= 0;
2874 if (new_itr
!= adapter
->itr
) {
2875 /* this attempts to bias the interrupt rate towards Bulk
2876 * by adding intermediate steps when interrupt rate is
2878 new_itr
= new_itr
> adapter
->itr
?
2879 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2881 /* Don't write the value here; it resets the adapter's
2882 * internal timer, and causes us to delay far longer than
2883 * we should between interrupts. Instead, we write the ITR
2884 * value at the beginning of the next interrupt so the timing
2885 * ends up being correct.
2887 adapter
->itr
= new_itr
;
2888 adapter
->rx_ring
->itr_val
= 1000000000 / (new_itr
* 256);
2889 adapter
->rx_ring
->set_itr
= 1;
2896 #define IGB_TX_FLAGS_CSUM 0x00000001
2897 #define IGB_TX_FLAGS_VLAN 0x00000002
2898 #define IGB_TX_FLAGS_TSO 0x00000004
2899 #define IGB_TX_FLAGS_IPV4 0x00000008
2900 #define IGB_TX_FLAGS_TSTAMP 0x00000010
2901 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
2902 #define IGB_TX_FLAGS_VLAN_SHIFT 16
2904 static inline int igb_tso_adv(struct igb_adapter
*adapter
,
2905 struct igb_ring
*tx_ring
,
2906 struct sk_buff
*skb
, u32 tx_flags
, u8
*hdr_len
)
2908 struct e1000_adv_tx_context_desc
*context_desc
;
2911 struct igb_buffer
*buffer_info
;
2912 u32 info
= 0, tu_cmd
= 0;
2913 u32 mss_l4len_idx
, l4len
;
2916 if (skb_header_cloned(skb
)) {
2917 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2922 l4len
= tcp_hdrlen(skb
);
2925 if (skb
->protocol
== htons(ETH_P_IP
)) {
2926 struct iphdr
*iph
= ip_hdr(skb
);
2929 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2933 } else if (skb_shinfo(skb
)->gso_type
== SKB_GSO_TCPV6
) {
2934 ipv6_hdr(skb
)->payload_len
= 0;
2935 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2936 &ipv6_hdr(skb
)->daddr
,
2940 i
= tx_ring
->next_to_use
;
2942 buffer_info
= &tx_ring
->buffer_info
[i
];
2943 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
2944 /* VLAN MACLEN IPLEN */
2945 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
2946 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
2947 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
2948 *hdr_len
+= skb_network_offset(skb
);
2949 info
|= skb_network_header_len(skb
);
2950 *hdr_len
+= skb_network_header_len(skb
);
2951 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
2953 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2954 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
2956 if (skb
->protocol
== htons(ETH_P_IP
))
2957 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
2958 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
2960 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
2963 mss_l4len_idx
= (skb_shinfo(skb
)->gso_size
<< E1000_ADVTXD_MSS_SHIFT
);
2964 mss_l4len_idx
|= (l4len
<< E1000_ADVTXD_L4LEN_SHIFT
);
2966 /* For 82575, context index must be unique per ring. */
2967 if (adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
)
2968 mss_l4len_idx
|= tx_ring
->queue_index
<< 4;
2970 context_desc
->mss_l4len_idx
= cpu_to_le32(mss_l4len_idx
);
2971 context_desc
->seqnum_seed
= 0;
2973 buffer_info
->time_stamp
= jiffies
;
2974 buffer_info
->next_to_watch
= i
;
2975 buffer_info
->dma
= 0;
2977 if (i
== tx_ring
->count
)
2980 tx_ring
->next_to_use
= i
;
2985 static inline bool igb_tx_csum_adv(struct igb_adapter
*adapter
,
2986 struct igb_ring
*tx_ring
,
2987 struct sk_buff
*skb
, u32 tx_flags
)
2989 struct e1000_adv_tx_context_desc
*context_desc
;
2991 struct igb_buffer
*buffer_info
;
2992 u32 info
= 0, tu_cmd
= 0;
2994 if ((skb
->ip_summed
== CHECKSUM_PARTIAL
) ||
2995 (tx_flags
& IGB_TX_FLAGS_VLAN
)) {
2996 i
= tx_ring
->next_to_use
;
2997 buffer_info
= &tx_ring
->buffer_info
[i
];
2998 context_desc
= E1000_TX_CTXTDESC_ADV(*tx_ring
, i
);
3000 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
3001 info
|= (tx_flags
& IGB_TX_FLAGS_VLAN_MASK
);
3002 info
|= (skb_network_offset(skb
) << E1000_ADVTXD_MACLEN_SHIFT
);
3003 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3004 info
|= skb_network_header_len(skb
);
3006 context_desc
->vlan_macip_lens
= cpu_to_le32(info
);
3008 tu_cmd
|= (E1000_TXD_CMD_DEXT
| E1000_ADVTXD_DTYP_CTXT
);
3010 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
3011 switch (skb
->protocol
) {
3012 case cpu_to_be16(ETH_P_IP
):
3013 tu_cmd
|= E1000_ADVTXD_TUCMD_IPV4
;
3014 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
3015 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
3017 case cpu_to_be16(ETH_P_IPV6
):
3018 /* XXX what about other V6 headers?? */
3019 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
3020 tu_cmd
|= E1000_ADVTXD_TUCMD_L4T_TCP
;
3023 if (unlikely(net_ratelimit()))
3024 dev_warn(&adapter
->pdev
->dev
,
3025 "partial checksum but proto=%x!\n",
3031 context_desc
->type_tucmd_mlhl
= cpu_to_le32(tu_cmd
);
3032 context_desc
->seqnum_seed
= 0;
3033 if (adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
)
3034 context_desc
->mss_l4len_idx
=
3035 cpu_to_le32(tx_ring
->queue_index
<< 4);
3037 context_desc
->mss_l4len_idx
= 0;
3039 buffer_info
->time_stamp
= jiffies
;
3040 buffer_info
->next_to_watch
= i
;
3041 buffer_info
->dma
= 0;
3044 if (i
== tx_ring
->count
)
3046 tx_ring
->next_to_use
= i
;
3053 #define IGB_MAX_TXD_PWR 16
3054 #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR)
3056 static inline int igb_tx_map_adv(struct igb_adapter
*adapter
,
3057 struct igb_ring
*tx_ring
, struct sk_buff
*skb
,
3060 struct igb_buffer
*buffer_info
;
3061 unsigned int len
= skb_headlen(skb
);
3062 unsigned int count
= 0, i
;
3065 i
= tx_ring
->next_to_use
;
3067 buffer_info
= &tx_ring
->buffer_info
[i
];
3068 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
3069 buffer_info
->length
= len
;
3070 /* set time_stamp *before* dma to help avoid a possible race */
3071 buffer_info
->time_stamp
= jiffies
;
3072 buffer_info
->next_to_watch
= i
;
3073 buffer_info
->dma
= pci_map_single(adapter
->pdev
, skb
->data
, len
,
3077 if (i
== tx_ring
->count
)
3080 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++) {
3081 struct skb_frag_struct
*frag
;
3083 frag
= &skb_shinfo(skb
)->frags
[f
];
3086 buffer_info
= &tx_ring
->buffer_info
[i
];
3087 BUG_ON(len
>= IGB_MAX_DATA_PER_TXD
);
3088 buffer_info
->length
= len
;
3089 buffer_info
->time_stamp
= jiffies
;
3090 buffer_info
->next_to_watch
= i
;
3091 buffer_info
->dma
= pci_map_page(adapter
->pdev
,
3099 if (i
== tx_ring
->count
)
3103 i
= ((i
== 0) ? tx_ring
->count
- 1 : i
- 1);
3104 tx_ring
->buffer_info
[i
].skb
= skb
;
3105 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3110 static inline void igb_tx_queue_adv(struct igb_adapter
*adapter
,
3111 struct igb_ring
*tx_ring
,
3112 int tx_flags
, int count
, u32 paylen
,
3115 union e1000_adv_tx_desc
*tx_desc
= NULL
;
3116 struct igb_buffer
*buffer_info
;
3117 u32 olinfo_status
= 0, cmd_type_len
;
3120 cmd_type_len
= (E1000_ADVTXD_DTYP_DATA
| E1000_ADVTXD_DCMD_IFCS
|
3121 E1000_ADVTXD_DCMD_DEXT
);
3123 if (tx_flags
& IGB_TX_FLAGS_VLAN
)
3124 cmd_type_len
|= E1000_ADVTXD_DCMD_VLE
;
3126 if (tx_flags
& IGB_TX_FLAGS_TSTAMP
)
3127 cmd_type_len
|= E1000_ADVTXD_MAC_TSTAMP
;
3129 if (tx_flags
& IGB_TX_FLAGS_TSO
) {
3130 cmd_type_len
|= E1000_ADVTXD_DCMD_TSE
;
3132 /* insert tcp checksum */
3133 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
3135 /* insert ip checksum */
3136 if (tx_flags
& IGB_TX_FLAGS_IPV4
)
3137 olinfo_status
|= E1000_TXD_POPTS_IXSM
<< 8;
3139 } else if (tx_flags
& IGB_TX_FLAGS_CSUM
) {
3140 olinfo_status
|= E1000_TXD_POPTS_TXSM
<< 8;
3143 if ((adapter
->flags
& IGB_FLAG_NEED_CTX_IDX
) &&
3144 (tx_flags
& (IGB_TX_FLAGS_CSUM
| IGB_TX_FLAGS_TSO
|
3145 IGB_TX_FLAGS_VLAN
)))
3146 olinfo_status
|= tx_ring
->queue_index
<< 4;
3148 olinfo_status
|= ((paylen
- hdr_len
) << E1000_ADVTXD_PAYLEN_SHIFT
);
3150 i
= tx_ring
->next_to_use
;
3152 buffer_info
= &tx_ring
->buffer_info
[i
];
3153 tx_desc
= E1000_TX_DESC_ADV(*tx_ring
, i
);
3154 tx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3155 tx_desc
->read
.cmd_type_len
=
3156 cpu_to_le32(cmd_type_len
| buffer_info
->length
);
3157 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
3159 if (i
== tx_ring
->count
)
3163 tx_desc
->read
.cmd_type_len
|= cpu_to_le32(adapter
->txd_cmd
);
3164 /* Force memory writes to complete before letting h/w
3165 * know there are new descriptors to fetch. (Only
3166 * applicable for weak-ordered memory model archs,
3167 * such as IA-64). */
3170 tx_ring
->next_to_use
= i
;
3171 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tail
);
3172 /* we need this if more than one processor can write to our tail
3173 * at a time, it syncronizes IO on IA64/Altix systems */
3177 static int __igb_maybe_stop_tx(struct net_device
*netdev
,
3178 struct igb_ring
*tx_ring
, int size
)
3180 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3182 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
3184 /* Herbert's original patch had:
3185 * smp_mb__after_netif_stop_queue();
3186 * but since that doesn't exist yet, just open code it. */
3189 /* We need to check again in a case another CPU has just
3190 * made room available. */
3191 if (IGB_DESC_UNUSED(tx_ring
) < size
)
3195 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
3196 ++adapter
->restart_queue
;
3200 static int igb_maybe_stop_tx(struct net_device
*netdev
,
3201 struct igb_ring
*tx_ring
, int size
)
3203 if (IGB_DESC_UNUSED(tx_ring
) >= size
)
3205 return __igb_maybe_stop_tx(netdev
, tx_ring
, size
);
3208 static int igb_xmit_frame_ring_adv(struct sk_buff
*skb
,
3209 struct net_device
*netdev
,
3210 struct igb_ring
*tx_ring
)
3212 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3214 unsigned int tx_flags
= 0;
3217 union skb_shared_tx
*shtx
;
3219 if (test_bit(__IGB_DOWN
, &adapter
->state
)) {
3220 dev_kfree_skb_any(skb
);
3221 return NETDEV_TX_OK
;
3224 if (skb
->len
<= 0) {
3225 dev_kfree_skb_any(skb
);
3226 return NETDEV_TX_OK
;
3229 /* need: 1 descriptor per page,
3230 * + 2 desc gap to keep tail from touching head,
3231 * + 1 desc for skb->data,
3232 * + 1 desc for context descriptor,
3233 * otherwise try next time */
3234 if (igb_maybe_stop_tx(netdev
, tx_ring
, skb_shinfo(skb
)->nr_frags
+ 4)) {
3235 /* this is a hard error */
3236 return NETDEV_TX_BUSY
;
3240 * TODO: check that there currently is no other packet with
3241 * time stamping in the queue
3243 * When doing time stamping, keep the connection to the socket
3244 * a while longer: it is still needed by skb_hwtstamp_tx(),
3245 * called either in igb_tx_hwtstamp() or by our caller when
3246 * doing software time stamping.
3249 if (unlikely(shtx
->hardware
)) {
3250 shtx
->in_progress
= 1;
3251 tx_flags
|= IGB_TX_FLAGS_TSTAMP
;
3254 if (adapter
->vlgrp
&& vlan_tx_tag_present(skb
)) {
3255 tx_flags
|= IGB_TX_FLAGS_VLAN
;
3256 tx_flags
|= (vlan_tx_tag_get(skb
) << IGB_TX_FLAGS_VLAN_SHIFT
);
3259 if (skb
->protocol
== htons(ETH_P_IP
))
3260 tx_flags
|= IGB_TX_FLAGS_IPV4
;
3262 first
= tx_ring
->next_to_use
;
3263 tso
= skb_is_gso(skb
) ? igb_tso_adv(adapter
, tx_ring
, skb
, tx_flags
,
3267 dev_kfree_skb_any(skb
);
3268 return NETDEV_TX_OK
;
3272 tx_flags
|= IGB_TX_FLAGS_TSO
;
3273 else if (igb_tx_csum_adv(adapter
, tx_ring
, skb
, tx_flags
) &&
3274 (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3275 tx_flags
|= IGB_TX_FLAGS_CSUM
;
3277 igb_tx_queue_adv(adapter
, tx_ring
, tx_flags
,
3278 igb_tx_map_adv(adapter
, tx_ring
, skb
, first
),
3281 netdev
->trans_start
= jiffies
;
3283 /* Make sure there is space in the ring for the next send. */
3284 igb_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 4);
3286 return NETDEV_TX_OK
;
3289 static int igb_xmit_frame_adv(struct sk_buff
*skb
, struct net_device
*netdev
)
3291 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3292 struct igb_ring
*tx_ring
;
3295 r_idx
= skb
->queue_mapping
& (IGB_ABS_MAX_TX_QUEUES
- 1);
3296 tx_ring
= adapter
->multi_tx_table
[r_idx
];
3298 /* This goes back to the question of how to logically map a tx queue
3299 * to a flow. Right now, performance is impacted slightly negatively
3300 * if using multiple tx queues. If the stack breaks away from a
3301 * single qdisc implementation, we can look at this again. */
3302 return (igb_xmit_frame_ring_adv(skb
, netdev
, tx_ring
));
3306 * igb_tx_timeout - Respond to a Tx Hang
3307 * @netdev: network interface device structure
3309 static void igb_tx_timeout(struct net_device
*netdev
)
3311 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3312 struct e1000_hw
*hw
= &adapter
->hw
;
3314 /* Do the reset outside of interrupt context */
3315 adapter
->tx_timeout_count
++;
3316 schedule_work(&adapter
->reset_task
);
3318 (adapter
->eims_enable_mask
& ~adapter
->eims_other
));
3321 static void igb_reset_task(struct work_struct
*work
)
3323 struct igb_adapter
*adapter
;
3324 adapter
= container_of(work
, struct igb_adapter
, reset_task
);
3326 igb_reinit_locked(adapter
);
3330 * igb_get_stats - Get System Network Statistics
3331 * @netdev: network interface device structure
3333 * Returns the address of the device statistics structure.
3334 * The statistics are actually updated from the timer callback.
3336 static struct net_device_stats
*igb_get_stats(struct net_device
*netdev
)
3338 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3340 /* only return the current stats */
3341 return &adapter
->net_stats
;
3345 * igb_change_mtu - Change the Maximum Transfer Unit
3346 * @netdev: network interface device structure
3347 * @new_mtu: new value for maximum frame size
3349 * Returns 0 on success, negative on failure
3351 static int igb_change_mtu(struct net_device
*netdev
, int new_mtu
)
3353 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3354 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3356 if ((max_frame
< ETH_ZLEN
+ ETH_FCS_LEN
) ||
3357 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3358 dev_err(&adapter
->pdev
->dev
, "Invalid MTU setting\n");
3362 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3363 dev_err(&adapter
->pdev
->dev
, "MTU > 9216 not supported.\n");
3367 while (test_and_set_bit(__IGB_RESETTING
, &adapter
->state
))
3370 /* igb_down has a dependency on max_frame_size */
3371 adapter
->max_frame_size
= max_frame
;
3372 if (netif_running(netdev
))
3375 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3376 * means we reserve 2 more, this pushes us to allocate from the next
3378 * i.e. RXBUFFER_2048 --> size-4096 slab
3381 if (max_frame
<= IGB_RXBUFFER_256
)
3382 adapter
->rx_buffer_len
= IGB_RXBUFFER_256
;
3383 else if (max_frame
<= IGB_RXBUFFER_512
)
3384 adapter
->rx_buffer_len
= IGB_RXBUFFER_512
;
3385 else if (max_frame
<= IGB_RXBUFFER_1024
)
3386 adapter
->rx_buffer_len
= IGB_RXBUFFER_1024
;
3387 else if (max_frame
<= IGB_RXBUFFER_2048
)
3388 adapter
->rx_buffer_len
= IGB_RXBUFFER_2048
;
3390 #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384
3391 adapter
->rx_buffer_len
= IGB_RXBUFFER_16384
;
3393 adapter
->rx_buffer_len
= PAGE_SIZE
/ 2;
3396 /* if sr-iov is enabled we need to force buffer size to 1K or larger */
3397 if (adapter
->vfs_allocated_count
&&
3398 (adapter
->rx_buffer_len
< IGB_RXBUFFER_1024
))
3399 adapter
->rx_buffer_len
= IGB_RXBUFFER_1024
;
3401 /* adjust allocation if LPE protects us, and we aren't using SBP */
3402 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
3403 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
))
3404 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3406 dev_info(&adapter
->pdev
->dev
, "changing MTU from %d to %d\n",
3407 netdev
->mtu
, new_mtu
);
3408 netdev
->mtu
= new_mtu
;
3410 if (netif_running(netdev
))
3415 clear_bit(__IGB_RESETTING
, &adapter
->state
);
3421 * igb_update_stats - Update the board statistics counters
3422 * @adapter: board private structure
3425 void igb_update_stats(struct igb_adapter
*adapter
)
3427 struct e1000_hw
*hw
= &adapter
->hw
;
3428 struct pci_dev
*pdev
= adapter
->pdev
;
3431 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3434 * Prevent stats update while adapter is being reset, or if the pci
3435 * connection is down.
3437 if (adapter
->link_speed
== 0)
3439 if (pci_channel_offline(pdev
))
3442 adapter
->stats
.crcerrs
+= rd32(E1000_CRCERRS
);
3443 adapter
->stats
.gprc
+= rd32(E1000_GPRC
);
3444 adapter
->stats
.gorc
+= rd32(E1000_GORCL
);
3445 rd32(E1000_GORCH
); /* clear GORCL */
3446 adapter
->stats
.bprc
+= rd32(E1000_BPRC
);
3447 adapter
->stats
.mprc
+= rd32(E1000_MPRC
);
3448 adapter
->stats
.roc
+= rd32(E1000_ROC
);
3450 adapter
->stats
.prc64
+= rd32(E1000_PRC64
);
3451 adapter
->stats
.prc127
+= rd32(E1000_PRC127
);
3452 adapter
->stats
.prc255
+= rd32(E1000_PRC255
);
3453 adapter
->stats
.prc511
+= rd32(E1000_PRC511
);
3454 adapter
->stats
.prc1023
+= rd32(E1000_PRC1023
);
3455 adapter
->stats
.prc1522
+= rd32(E1000_PRC1522
);
3456 adapter
->stats
.symerrs
+= rd32(E1000_SYMERRS
);
3457 adapter
->stats
.sec
+= rd32(E1000_SEC
);
3459 adapter
->stats
.mpc
+= rd32(E1000_MPC
);
3460 adapter
->stats
.scc
+= rd32(E1000_SCC
);
3461 adapter
->stats
.ecol
+= rd32(E1000_ECOL
);
3462 adapter
->stats
.mcc
+= rd32(E1000_MCC
);
3463 adapter
->stats
.latecol
+= rd32(E1000_LATECOL
);
3464 adapter
->stats
.dc
+= rd32(E1000_DC
);
3465 adapter
->stats
.rlec
+= rd32(E1000_RLEC
);
3466 adapter
->stats
.xonrxc
+= rd32(E1000_XONRXC
);
3467 adapter
->stats
.xontxc
+= rd32(E1000_XONTXC
);
3468 adapter
->stats
.xoffrxc
+= rd32(E1000_XOFFRXC
);
3469 adapter
->stats
.xofftxc
+= rd32(E1000_XOFFTXC
);
3470 adapter
->stats
.fcruc
+= rd32(E1000_FCRUC
);
3471 adapter
->stats
.gptc
+= rd32(E1000_GPTC
);
3472 adapter
->stats
.gotc
+= rd32(E1000_GOTCL
);
3473 rd32(E1000_GOTCH
); /* clear GOTCL */
3474 adapter
->stats
.rnbc
+= rd32(E1000_RNBC
);
3475 adapter
->stats
.ruc
+= rd32(E1000_RUC
);
3476 adapter
->stats
.rfc
+= rd32(E1000_RFC
);
3477 adapter
->stats
.rjc
+= rd32(E1000_RJC
);
3478 adapter
->stats
.tor
+= rd32(E1000_TORH
);
3479 adapter
->stats
.tot
+= rd32(E1000_TOTH
);
3480 adapter
->stats
.tpr
+= rd32(E1000_TPR
);
3482 adapter
->stats
.ptc64
+= rd32(E1000_PTC64
);
3483 adapter
->stats
.ptc127
+= rd32(E1000_PTC127
);
3484 adapter
->stats
.ptc255
+= rd32(E1000_PTC255
);
3485 adapter
->stats
.ptc511
+= rd32(E1000_PTC511
);
3486 adapter
->stats
.ptc1023
+= rd32(E1000_PTC1023
);
3487 adapter
->stats
.ptc1522
+= rd32(E1000_PTC1522
);
3489 adapter
->stats
.mptc
+= rd32(E1000_MPTC
);
3490 adapter
->stats
.bptc
+= rd32(E1000_BPTC
);
3492 /* used for adaptive IFS */
3494 hw
->mac
.tx_packet_delta
= rd32(E1000_TPT
);
3495 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
3496 hw
->mac
.collision_delta
= rd32(E1000_COLC
);
3497 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
3499 adapter
->stats
.algnerrc
+= rd32(E1000_ALGNERRC
);
3500 adapter
->stats
.rxerrc
+= rd32(E1000_RXERRC
);
3501 adapter
->stats
.tncrs
+= rd32(E1000_TNCRS
);
3502 adapter
->stats
.tsctc
+= rd32(E1000_TSCTC
);
3503 adapter
->stats
.tsctfc
+= rd32(E1000_TSCTFC
);
3505 adapter
->stats
.iac
+= rd32(E1000_IAC
);
3506 adapter
->stats
.icrxoc
+= rd32(E1000_ICRXOC
);
3507 adapter
->stats
.icrxptc
+= rd32(E1000_ICRXPTC
);
3508 adapter
->stats
.icrxatc
+= rd32(E1000_ICRXATC
);
3509 adapter
->stats
.ictxptc
+= rd32(E1000_ICTXPTC
);
3510 adapter
->stats
.ictxatc
+= rd32(E1000_ICTXATC
);
3511 adapter
->stats
.ictxqec
+= rd32(E1000_ICTXQEC
);
3512 adapter
->stats
.ictxqmtc
+= rd32(E1000_ICTXQMTC
);
3513 adapter
->stats
.icrxdmtc
+= rd32(E1000_ICRXDMTC
);
3515 /* Fill out the OS statistics structure */
3516 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3517 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3521 /* RLEC on some newer hardware can be incorrect so build
3522 * our own version based on RUC and ROC */
3523 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3524 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3525 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3526 adapter
->stats
.cexterr
;
3527 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3529 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3530 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3531 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3534 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3535 adapter
->stats
.latecol
;
3536 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3537 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3538 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3540 /* Tx Dropped needs to be maintained elsewhere */
3543 if (hw
->phy
.media_type
== e1000_media_type_copper
) {
3544 if ((adapter
->link_speed
== SPEED_1000
) &&
3545 (!igb_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3546 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3547 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3551 /* Management Stats */
3552 adapter
->stats
.mgptc
+= rd32(E1000_MGTPTC
);
3553 adapter
->stats
.mgprc
+= rd32(E1000_MGTPRC
);
3554 adapter
->stats
.mgpdc
+= rd32(E1000_MGTPDC
);
3557 static irqreturn_t
igb_msix_other(int irq
, void *data
)
3559 struct net_device
*netdev
= data
;
3560 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3561 struct e1000_hw
*hw
= &adapter
->hw
;
3562 u32 icr
= rd32(E1000_ICR
);
3564 /* reading ICR causes bit 31 of EICR to be cleared */
3566 if(icr
& E1000_ICR_DOUTSYNC
) {
3567 /* HW is reporting DMA is out of sync */
3568 adapter
->stats
.doosync
++;
3571 /* Check for a mailbox event */
3572 if (icr
& E1000_ICR_VMMB
)
3573 igb_msg_task(adapter
);
3575 if (icr
& E1000_ICR_LSC
) {
3576 hw
->mac
.get_link_status
= 1;
3577 /* guard against interrupt when we're going down */
3578 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
3579 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3582 wr32(E1000_IMS
, E1000_IMS_LSC
| E1000_IMS_DOUTSYNC
| E1000_IMS_VMMB
);
3583 wr32(E1000_EIMS
, adapter
->eims_other
);
3588 static irqreturn_t
igb_msix_tx(int irq
, void *data
)
3590 struct igb_ring
*tx_ring
= data
;
3591 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3592 struct e1000_hw
*hw
= &adapter
->hw
;
3594 #ifdef CONFIG_IGB_DCA
3595 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3596 igb_update_tx_dca(tx_ring
);
3599 tx_ring
->total_bytes
= 0;
3600 tx_ring
->total_packets
= 0;
3602 /* auto mask will automatically reenable the interrupt when we write
3604 if (!igb_clean_tx_irq(tx_ring
))
3605 /* Ring was not completely cleaned, so fire another interrupt */
3606 wr32(E1000_EICS
, tx_ring
->eims_value
);
3608 wr32(E1000_EIMS
, tx_ring
->eims_value
);
3613 static void igb_write_itr(struct igb_ring
*ring
)
3615 struct e1000_hw
*hw
= &ring
->adapter
->hw
;
3616 if ((ring
->adapter
->itr_setting
& 3) && ring
->set_itr
) {
3617 switch (hw
->mac
.type
) {
3619 wr32(ring
->itr_register
, ring
->itr_val
|
3623 wr32(ring
->itr_register
, ring
->itr_val
|
3624 (ring
->itr_val
<< 16));
3631 static irqreturn_t
igb_msix_rx(int irq
, void *data
)
3633 struct igb_ring
*rx_ring
= data
;
3635 /* Write the ITR value calculated at the end of the
3636 * previous interrupt.
3639 igb_write_itr(rx_ring
);
3641 if (napi_schedule_prep(&rx_ring
->napi
))
3642 __napi_schedule(&rx_ring
->napi
);
3644 #ifdef CONFIG_IGB_DCA
3645 if (rx_ring
->adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3646 igb_update_rx_dca(rx_ring
);
3651 #ifdef CONFIG_IGB_DCA
3652 static void igb_update_rx_dca(struct igb_ring
*rx_ring
)
3655 struct igb_adapter
*adapter
= rx_ring
->adapter
;
3656 struct e1000_hw
*hw
= &adapter
->hw
;
3657 int cpu
= get_cpu();
3658 int q
= rx_ring
->reg_idx
;
3660 if (rx_ring
->cpu
!= cpu
) {
3661 dca_rxctrl
= rd32(E1000_DCA_RXCTRL(q
));
3662 if (hw
->mac
.type
== e1000_82576
) {
3663 dca_rxctrl
&= ~E1000_DCA_RXCTRL_CPUID_MASK_82576
;
3664 dca_rxctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
) <<
3665 E1000_DCA_RXCTRL_CPUID_SHIFT
;
3667 dca_rxctrl
&= ~E1000_DCA_RXCTRL_CPUID_MASK
;
3668 dca_rxctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
);
3670 dca_rxctrl
|= E1000_DCA_RXCTRL_DESC_DCA_EN
;
3671 dca_rxctrl
|= E1000_DCA_RXCTRL_HEAD_DCA_EN
;
3672 dca_rxctrl
|= E1000_DCA_RXCTRL_DATA_DCA_EN
;
3673 wr32(E1000_DCA_RXCTRL(q
), dca_rxctrl
);
3679 static void igb_update_tx_dca(struct igb_ring
*tx_ring
)
3682 struct igb_adapter
*adapter
= tx_ring
->adapter
;
3683 struct e1000_hw
*hw
= &adapter
->hw
;
3684 int cpu
= get_cpu();
3685 int q
= tx_ring
->reg_idx
;
3687 if (tx_ring
->cpu
!= cpu
) {
3688 dca_txctrl
= rd32(E1000_DCA_TXCTRL(q
));
3689 if (hw
->mac
.type
== e1000_82576
) {
3690 dca_txctrl
&= ~E1000_DCA_TXCTRL_CPUID_MASK_82576
;
3691 dca_txctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
) <<
3692 E1000_DCA_TXCTRL_CPUID_SHIFT
;
3694 dca_txctrl
&= ~E1000_DCA_TXCTRL_CPUID_MASK
;
3695 dca_txctrl
|= dca3_get_tag(&adapter
->pdev
->dev
, cpu
);
3697 dca_txctrl
|= E1000_DCA_TXCTRL_DESC_DCA_EN
;
3698 wr32(E1000_DCA_TXCTRL(q
), dca_txctrl
);
3704 static void igb_setup_dca(struct igb_adapter
*adapter
)
3708 if (!(adapter
->flags
& IGB_FLAG_DCA_ENABLED
))
3711 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
3712 adapter
->tx_ring
[i
].cpu
= -1;
3713 igb_update_tx_dca(&adapter
->tx_ring
[i
]);
3715 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3716 adapter
->rx_ring
[i
].cpu
= -1;
3717 igb_update_rx_dca(&adapter
->rx_ring
[i
]);
3721 static int __igb_notify_dca(struct device
*dev
, void *data
)
3723 struct net_device
*netdev
= dev_get_drvdata(dev
);
3724 struct igb_adapter
*adapter
= netdev_priv(netdev
);
3725 struct e1000_hw
*hw
= &adapter
->hw
;
3726 unsigned long event
= *(unsigned long *)data
;
3729 case DCA_PROVIDER_ADD
:
3730 /* if already enabled, don't do it again */
3731 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
3733 /* Always use CB2 mode, difference is masked
3734 * in the CB driver. */
3735 wr32(E1000_DCA_CTRL
, E1000_DCA_CTRL_DCA_MODE_CB2
);
3736 if (dca_add_requester(dev
) == 0) {
3737 adapter
->flags
|= IGB_FLAG_DCA_ENABLED
;
3738 dev_info(&adapter
->pdev
->dev
, "DCA enabled\n");
3739 igb_setup_dca(adapter
);
3742 /* Fall Through since DCA is disabled. */
3743 case DCA_PROVIDER_REMOVE
:
3744 if (adapter
->flags
& IGB_FLAG_DCA_ENABLED
) {
3745 /* without this a class_device is left
3746 * hanging around in the sysfs model */
3747 dca_remove_requester(dev
);
3748 dev_info(&adapter
->pdev
->dev
, "DCA disabled\n");
3749 adapter
->flags
&= ~IGB_FLAG_DCA_ENABLED
;
3750 wr32(E1000_DCA_CTRL
, E1000_DCA_CTRL_DCA_MODE_DISABLE
);
3758 static int igb_notify_dca(struct notifier_block
*nb
, unsigned long event
,
3763 ret_val
= driver_for_each_device(&igb_driver
.driver
, NULL
, &event
,
3766 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
3768 #endif /* CONFIG_IGB_DCA */
3770 static void igb_ping_all_vfs(struct igb_adapter
*adapter
)
3772 struct e1000_hw
*hw
= &adapter
->hw
;
3776 for (i
= 0 ; i
< adapter
->vfs_allocated_count
; i
++) {
3777 ping
= E1000_PF_CONTROL_MSG
;
3778 if (adapter
->vf_data
[i
].clear_to_send
)
3779 ping
|= E1000_VT_MSGTYPE_CTS
;
3780 igb_write_mbx(hw
, &ping
, 1, i
);
3784 static int igb_set_vf_multicasts(struct igb_adapter
*adapter
,
3785 u32
*msgbuf
, u32 vf
)
3787 int n
= (msgbuf
[0] & E1000_VT_MSGINFO_MASK
) >> E1000_VT_MSGINFO_SHIFT
;
3788 u16
*hash_list
= (u16
*)&msgbuf
[1];
3789 struct vf_data_storage
*vf_data
= &adapter
->vf_data
[vf
];
3792 /* only up to 30 hash values supported */
3796 /* salt away the number of multi cast addresses assigned
3797 * to this VF for later use to restore when the PF multi cast
3800 vf_data
->num_vf_mc_hashes
= n
;
3802 /* VFs are limited to using the MTA hash table for their multicast
3804 for (i
= 0; i
< n
; i
++)
3805 vf_data
->vf_mc_hashes
[i
] = hash_list
[i
];;
3807 /* Flush and reset the mta with the new values */
3808 igb_set_multi(adapter
->netdev
);
3813 static void igb_restore_vf_multicasts(struct igb_adapter
*adapter
)
3815 struct e1000_hw
*hw
= &adapter
->hw
;
3816 struct vf_data_storage
*vf_data
;
3819 for (i
= 0; i
< adapter
->vfs_allocated_count
; i
++) {
3820 vf_data
= &adapter
->vf_data
[i
];
3821 for (j
= 0; j
< vf_data
->num_vf_mc_hashes
; j
++)
3822 igb_mta_set(hw
, vf_data
->vf_mc_hashes
[j
]);
3826 static void igb_clear_vf_vfta(struct igb_adapter
*adapter
, u32 vf
)
3828 struct e1000_hw
*hw
= &adapter
->hw
;
3829 u32 pool_mask
, reg
, vid
;
3832 pool_mask
= 1 << (E1000_VLVF_POOLSEL_SHIFT
+ vf
);
3834 /* Find the vlan filter for this id */
3835 for (i
= 0; i
< E1000_VLVF_ARRAY_SIZE
; i
++) {
3836 reg
= rd32(E1000_VLVF(i
));
3838 /* remove the vf from the pool */
3841 /* if pool is empty then remove entry from vfta */
3842 if (!(reg
& E1000_VLVF_POOLSEL_MASK
) &&
3843 (reg
& E1000_VLVF_VLANID_ENABLE
)) {
3845 vid
= reg
& E1000_VLVF_VLANID_MASK
;
3846 igb_vfta_set(hw
, vid
, false);
3849 wr32(E1000_VLVF(i
), reg
);
3853 static s32
igb_vlvf_set(struct igb_adapter
*adapter
, u32 vid
, bool add
, u32 vf
)
3855 struct e1000_hw
*hw
= &adapter
->hw
;
3858 /* It is an error to call this function when VFs are not enabled */
3859 if (!adapter
->vfs_allocated_count
)
3862 /* Find the vlan filter for this id */
3863 for (i
= 0; i
< E1000_VLVF_ARRAY_SIZE
; i
++) {
3864 reg
= rd32(E1000_VLVF(i
));
3865 if ((reg
& E1000_VLVF_VLANID_ENABLE
) &&
3866 vid
== (reg
& E1000_VLVF_VLANID_MASK
))
3871 if (i
== E1000_VLVF_ARRAY_SIZE
) {
3872 /* Did not find a matching VLAN ID entry that was
3873 * enabled. Search for a free filter entry, i.e.
3874 * one without the enable bit set
3876 for (i
= 0; i
< E1000_VLVF_ARRAY_SIZE
; i
++) {
3877 reg
= rd32(E1000_VLVF(i
));
3878 if (!(reg
& E1000_VLVF_VLANID_ENABLE
))
3882 if (i
< E1000_VLVF_ARRAY_SIZE
) {
3883 /* Found an enabled/available entry */
3884 reg
|= 1 << (E1000_VLVF_POOLSEL_SHIFT
+ vf
);
3886 /* if !enabled we need to set this up in vfta */
3887 if (!(reg
& E1000_VLVF_VLANID_ENABLE
)) {
3888 /* add VID to filter table, if bit already set
3889 * PF must have added it outside of table */
3890 if (igb_vfta_set(hw
, vid
, true))
3891 reg
|= 1 << (E1000_VLVF_POOLSEL_SHIFT
+
3892 adapter
->vfs_allocated_count
);
3893 reg
|= E1000_VLVF_VLANID_ENABLE
;
3895 reg
&= ~E1000_VLVF_VLANID_MASK
;
3898 wr32(E1000_VLVF(i
), reg
);
3902 if (i
< E1000_VLVF_ARRAY_SIZE
) {
3903 /* remove vf from the pool */
3904 reg
&= ~(1 << (E1000_VLVF_POOLSEL_SHIFT
+ vf
));
3905 /* if pool is empty then remove entry from vfta */
3906 if (!(reg
& E1000_VLVF_POOLSEL_MASK
)) {
3908 igb_vfta_set(hw
, vid
, false);
3910 wr32(E1000_VLVF(i
), reg
);
3917 static int igb_set_vf_vlan(struct igb_adapter
*adapter
, u32
*msgbuf
, u32 vf
)
3919 int add
= (msgbuf
[0] & E1000_VT_MSGINFO_MASK
) >> E1000_VT_MSGINFO_SHIFT
;
3920 int vid
= (msgbuf
[1] & E1000_VLVF_VLANID_MASK
);
3922 return igb_vlvf_set(adapter
, vid
, add
, vf
);
3925 static inline void igb_vf_reset_event(struct igb_adapter
*adapter
, u32 vf
)
3927 struct e1000_hw
*hw
= &adapter
->hw
;
3929 /* disable mailbox functionality for vf */
3930 adapter
->vf_data
[vf
].clear_to_send
= false;
3932 /* reset offloads to defaults */
3933 igb_set_vmolr(hw
, vf
);
3935 /* reset vlans for device */
3936 igb_clear_vf_vfta(adapter
, vf
);
3938 /* reset multicast table array for vf */
3939 adapter
->vf_data
[vf
].num_vf_mc_hashes
= 0;
3941 /* Flush and reset the mta with the new values */
3942 igb_set_multi(adapter
->netdev
);
3945 static inline void igb_vf_reset_msg(struct igb_adapter
*adapter
, u32 vf
)
3947 struct e1000_hw
*hw
= &adapter
->hw
;
3948 unsigned char *vf_mac
= adapter
->vf_data
[vf
].vf_mac_addresses
;
3950 u8
*addr
= (u8
*)(&msgbuf
[1]);
3952 /* process all the same items cleared in a function level reset */
3953 igb_vf_reset_event(adapter
, vf
);
3955 /* set vf mac address */
3956 igb_rar_set(hw
, vf_mac
, vf
+ 1);
3957 igb_set_rah_pool(hw
, vf
, vf
+ 1);
3959 /* enable transmit and receive for vf */
3960 reg
= rd32(E1000_VFTE
);
3961 wr32(E1000_VFTE
, reg
| (1 << vf
));
3962 reg
= rd32(E1000_VFRE
);
3963 wr32(E1000_VFRE
, reg
| (1 << vf
));
3965 /* enable mailbox functionality for vf */
3966 adapter
->vf_data
[vf
].clear_to_send
= true;
3968 /* reply to reset with ack and vf mac address */
3969 msgbuf
[0] = E1000_VF_RESET
| E1000_VT_MSGTYPE_ACK
;
3970 memcpy(addr
, vf_mac
, 6);
3971 igb_write_mbx(hw
, msgbuf
, 3, vf
);
3974 static int igb_set_vf_mac_addr(struct igb_adapter
*adapter
, u32
*msg
, int vf
)
3976 unsigned char *addr
= (char *)&msg
[1];
3979 if (is_valid_ether_addr(addr
))
3980 err
= igb_set_vf_mac(adapter
, vf
, addr
);
3986 static void igb_rcv_ack_from_vf(struct igb_adapter
*adapter
, u32 vf
)
3988 struct e1000_hw
*hw
= &adapter
->hw
;
3989 u32 msg
= E1000_VT_MSGTYPE_NACK
;
3991 /* if device isn't clear to send it shouldn't be reading either */
3992 if (!adapter
->vf_data
[vf
].clear_to_send
)
3993 igb_write_mbx(hw
, &msg
, 1, vf
);
3997 static void igb_msg_task(struct igb_adapter
*adapter
)
3999 struct e1000_hw
*hw
= &adapter
->hw
;
4002 for (vf
= 0; vf
< adapter
->vfs_allocated_count
; vf
++) {
4003 /* process any reset requests */
4004 if (!igb_check_for_rst(hw
, vf
)) {
4005 adapter
->vf_data
[vf
].clear_to_send
= false;
4006 igb_vf_reset_event(adapter
, vf
);
4009 /* process any messages pending */
4010 if (!igb_check_for_msg(hw
, vf
))
4011 igb_rcv_msg_from_vf(adapter
, vf
);
4013 /* process any acks */
4014 if (!igb_check_for_ack(hw
, vf
))
4015 igb_rcv_ack_from_vf(adapter
, vf
);
4020 static int igb_rcv_msg_from_vf(struct igb_adapter
*adapter
, u32 vf
)
4022 u32 mbx_size
= E1000_VFMAILBOX_SIZE
;
4023 u32 msgbuf
[mbx_size
];
4024 struct e1000_hw
*hw
= &adapter
->hw
;
4027 retval
= igb_read_mbx(hw
, msgbuf
, mbx_size
, vf
);
4030 dev_err(&adapter
->pdev
->dev
,
4031 "Error receiving message from VF\n");
4033 /* this is a message we already processed, do nothing */
4034 if (msgbuf
[0] & (E1000_VT_MSGTYPE_ACK
| E1000_VT_MSGTYPE_NACK
))
4038 * until the vf completes a reset it should not be
4039 * allowed to start any configuration.
4042 if (msgbuf
[0] == E1000_VF_RESET
) {
4043 igb_vf_reset_msg(adapter
, vf
);
4048 if (!adapter
->vf_data
[vf
].clear_to_send
) {
4049 msgbuf
[0] |= E1000_VT_MSGTYPE_NACK
;
4050 igb_write_mbx(hw
, msgbuf
, 1, vf
);
4054 switch ((msgbuf
[0] & 0xFFFF)) {
4055 case E1000_VF_SET_MAC_ADDR
:
4056 retval
= igb_set_vf_mac_addr(adapter
, msgbuf
, vf
);
4058 case E1000_VF_SET_MULTICAST
:
4059 retval
= igb_set_vf_multicasts(adapter
, msgbuf
, vf
);
4061 case E1000_VF_SET_LPE
:
4062 retval
= igb_set_vf_rlpml(adapter
, msgbuf
[1], vf
);
4064 case E1000_VF_SET_VLAN
:
4065 retval
= igb_set_vf_vlan(adapter
, msgbuf
, vf
);
4068 dev_err(&adapter
->pdev
->dev
, "Unhandled Msg %08x\n", msgbuf
[0]);
4073 /* notify the VF of the results of what it sent us */
4075 msgbuf
[0] |= E1000_VT_MSGTYPE_NACK
;
4077 msgbuf
[0] |= E1000_VT_MSGTYPE_ACK
;
4079 msgbuf
[0] |= E1000_VT_MSGTYPE_CTS
;
4081 igb_write_mbx(hw
, msgbuf
, 1, vf
);
4087 * igb_intr_msi - Interrupt Handler
4088 * @irq: interrupt number
4089 * @data: pointer to a network interface device structure
4091 static irqreturn_t
igb_intr_msi(int irq
, void *data
)
4093 struct net_device
*netdev
= data
;
4094 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4095 struct e1000_hw
*hw
= &adapter
->hw
;
4096 /* read ICR disables interrupts using IAM */
4097 u32 icr
= rd32(E1000_ICR
);
4099 igb_write_itr(adapter
->rx_ring
);
4101 if(icr
& E1000_ICR_DOUTSYNC
) {
4102 /* HW is reporting DMA is out of sync */
4103 adapter
->stats
.doosync
++;
4106 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
4107 hw
->mac
.get_link_status
= 1;
4108 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4109 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
4112 napi_schedule(&adapter
->rx_ring
[0].napi
);
4118 * igb_intr - Legacy Interrupt Handler
4119 * @irq: interrupt number
4120 * @data: pointer to a network interface device structure
4122 static irqreturn_t
igb_intr(int irq
, void *data
)
4124 struct net_device
*netdev
= data
;
4125 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4126 struct e1000_hw
*hw
= &adapter
->hw
;
4127 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
4128 * need for the IMC write */
4129 u32 icr
= rd32(E1000_ICR
);
4131 return IRQ_NONE
; /* Not our interrupt */
4133 igb_write_itr(adapter
->rx_ring
);
4135 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
4136 * not set, then the adapter didn't send an interrupt */
4137 if (!(icr
& E1000_ICR_INT_ASSERTED
))
4140 if(icr
& E1000_ICR_DOUTSYNC
) {
4141 /* HW is reporting DMA is out of sync */
4142 adapter
->stats
.doosync
++;
4145 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
4146 hw
->mac
.get_link_status
= 1;
4147 /* guard against interrupt when we're going down */
4148 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4149 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
4152 napi_schedule(&adapter
->rx_ring
[0].napi
);
4157 static inline void igb_rx_irq_enable(struct igb_ring
*rx_ring
)
4159 struct igb_adapter
*adapter
= rx_ring
->adapter
;
4160 struct e1000_hw
*hw
= &adapter
->hw
;
4162 if (adapter
->itr_setting
& 3) {
4163 if (adapter
->num_rx_queues
== 1)
4164 igb_set_itr(adapter
);
4166 igb_update_ring_itr(rx_ring
);
4169 if (!test_bit(__IGB_DOWN
, &adapter
->state
)) {
4170 if (adapter
->msix_entries
)
4171 wr32(E1000_EIMS
, rx_ring
->eims_value
);
4173 igb_irq_enable(adapter
);
4178 * igb_poll - NAPI Rx polling callback
4179 * @napi: napi polling structure
4180 * @budget: count of how many packets we should handle
4182 static int igb_poll(struct napi_struct
*napi
, int budget
)
4184 struct igb_ring
*rx_ring
= container_of(napi
, struct igb_ring
, napi
);
4187 #ifdef CONFIG_IGB_DCA
4188 if (rx_ring
->adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
4189 igb_update_rx_dca(rx_ring
);
4191 igb_clean_rx_irq_adv(rx_ring
, &work_done
, budget
);
4193 if (rx_ring
->buddy
) {
4194 #ifdef CONFIG_IGB_DCA
4195 if (rx_ring
->adapter
->flags
& IGB_FLAG_DCA_ENABLED
)
4196 igb_update_tx_dca(rx_ring
->buddy
);
4198 if (!igb_clean_tx_irq(rx_ring
->buddy
))
4202 /* If not enough Rx work done, exit the polling mode */
4203 if (work_done
< budget
) {
4204 napi_complete(napi
);
4205 igb_rx_irq_enable(rx_ring
);
4212 * igb_hwtstamp - utility function which checks for TX time stamp
4213 * @adapter: board private structure
4214 * @skb: packet that was just sent
4216 * If we were asked to do hardware stamping and such a time stamp is
4217 * available, then it must have been for this skb here because we only
4218 * allow only one such packet into the queue.
4220 static void igb_tx_hwtstamp(struct igb_adapter
*adapter
, struct sk_buff
*skb
)
4222 union skb_shared_tx
*shtx
= skb_tx(skb
);
4223 struct e1000_hw
*hw
= &adapter
->hw
;
4225 if (unlikely(shtx
->hardware
)) {
4226 u32 valid
= rd32(E1000_TSYNCTXCTL
) & E1000_TSYNCTXCTL_VALID
;
4228 u64 regval
= rd32(E1000_TXSTMPL
);
4230 struct skb_shared_hwtstamps shhwtstamps
;
4232 memset(&shhwtstamps
, 0, sizeof(shhwtstamps
));
4233 regval
|= (u64
)rd32(E1000_TXSTMPH
) << 32;
4234 ns
= timecounter_cyc2time(&adapter
->clock
,
4236 timecompare_update(&adapter
->compare
, ns
);
4237 shhwtstamps
.hwtstamp
= ns_to_ktime(ns
);
4238 shhwtstamps
.syststamp
=
4239 timecompare_transform(&adapter
->compare
, ns
);
4240 skb_tstamp_tx(skb
, &shhwtstamps
);
4246 * igb_clean_tx_irq - Reclaim resources after transmit completes
4247 * @adapter: board private structure
4248 * returns true if ring is completely cleaned
4250 static bool igb_clean_tx_irq(struct igb_ring
*tx_ring
)
4252 struct igb_adapter
*adapter
= tx_ring
->adapter
;
4253 struct net_device
*netdev
= adapter
->netdev
;
4254 struct e1000_hw
*hw
= &adapter
->hw
;
4255 struct igb_buffer
*buffer_info
;
4256 struct sk_buff
*skb
;
4257 union e1000_adv_tx_desc
*tx_desc
, *eop_desc
;
4258 unsigned int total_bytes
= 0, total_packets
= 0;
4259 unsigned int i
, eop
, count
= 0;
4260 bool cleaned
= false;
4262 i
= tx_ring
->next_to_clean
;
4263 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
4264 eop_desc
= E1000_TX_DESC_ADV(*tx_ring
, eop
);
4266 while ((eop_desc
->wb
.status
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
4267 (count
< tx_ring
->count
)) {
4268 for (cleaned
= false; !cleaned
; count
++) {
4269 tx_desc
= E1000_TX_DESC_ADV(*tx_ring
, i
);
4270 buffer_info
= &tx_ring
->buffer_info
[i
];
4271 cleaned
= (i
== eop
);
4272 skb
= buffer_info
->skb
;
4275 unsigned int segs
, bytecount
;
4276 /* gso_segs is currently only valid for tcp */
4277 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
4278 /* multiply data chunks by size of headers */
4279 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
4281 total_packets
+= segs
;
4282 total_bytes
+= bytecount
;
4284 igb_tx_hwtstamp(adapter
, skb
);
4287 igb_unmap_and_free_tx_resource(adapter
, buffer_info
);
4288 tx_desc
->wb
.status
= 0;
4291 if (i
== tx_ring
->count
)
4294 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
4295 eop_desc
= E1000_TX_DESC_ADV(*tx_ring
, eop
);
4298 tx_ring
->next_to_clean
= i
;
4300 if (unlikely(count
&&
4301 netif_carrier_ok(netdev
) &&
4302 IGB_DESC_UNUSED(tx_ring
) >= IGB_TX_QUEUE_WAKE
)) {
4303 /* Make sure that anybody stopping the queue after this
4304 * sees the new next_to_clean.
4307 if (__netif_subqueue_stopped(netdev
, tx_ring
->queue_index
) &&
4308 !(test_bit(__IGB_DOWN
, &adapter
->state
))) {
4309 netif_wake_subqueue(netdev
, tx_ring
->queue_index
);
4310 ++adapter
->restart_queue
;
4314 if (tx_ring
->detect_tx_hung
) {
4315 /* Detect a transmit hang in hardware, this serializes the
4316 * check with the clearing of time_stamp and movement of i */
4317 tx_ring
->detect_tx_hung
= false;
4318 if (tx_ring
->buffer_info
[i
].time_stamp
&&
4319 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+
4320 (adapter
->tx_timeout_factor
* HZ
))
4321 && !(rd32(E1000_STATUS
) &
4322 E1000_STATUS_TXOFF
)) {
4324 /* detected Tx unit hang */
4325 dev_err(&adapter
->pdev
->dev
,
4326 "Detected Tx Unit Hang\n"
4330 " next_to_use <%x>\n"
4331 " next_to_clean <%x>\n"
4332 "buffer_info[next_to_clean]\n"
4333 " time_stamp <%lx>\n"
4334 " next_to_watch <%x>\n"
4336 " desc.status <%x>\n",
4337 tx_ring
->queue_index
,
4338 readl(adapter
->hw
.hw_addr
+ tx_ring
->head
),
4339 readl(adapter
->hw
.hw_addr
+ tx_ring
->tail
),
4340 tx_ring
->next_to_use
,
4341 tx_ring
->next_to_clean
,
4342 tx_ring
->buffer_info
[i
].time_stamp
,
4345 eop_desc
->wb
.status
);
4346 netif_stop_subqueue(netdev
, tx_ring
->queue_index
);
4349 tx_ring
->total_bytes
+= total_bytes
;
4350 tx_ring
->total_packets
+= total_packets
;
4351 tx_ring
->tx_stats
.bytes
+= total_bytes
;
4352 tx_ring
->tx_stats
.packets
+= total_packets
;
4353 adapter
->net_stats
.tx_bytes
+= total_bytes
;
4354 adapter
->net_stats
.tx_packets
+= total_packets
;
4355 return (count
< tx_ring
->count
);
4359 * igb_receive_skb - helper function to handle rx indications
4360 * @ring: pointer to receive ring receving this packet
4361 * @status: descriptor status field as written by hardware
4362 * @rx_desc: receive descriptor containing vlan and type information.
4363 * @skb: pointer to sk_buff to be indicated to stack
4365 static void igb_receive_skb(struct igb_ring
*ring
, u8 status
,
4366 union e1000_adv_rx_desc
* rx_desc
,
4367 struct sk_buff
*skb
)
4369 struct igb_adapter
* adapter
= ring
->adapter
;
4370 bool vlan_extracted
= (adapter
->vlgrp
&& (status
& E1000_RXD_STAT_VP
));
4372 skb_record_rx_queue(skb
, ring
->queue_index
);
4373 if (skb
->ip_summed
== CHECKSUM_UNNECESSARY
) {
4375 vlan_gro_receive(&ring
->napi
, adapter
->vlgrp
,
4376 le16_to_cpu(rx_desc
->wb
.upper
.vlan
),
4379 napi_gro_receive(&ring
->napi
, skb
);
4382 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4383 le16_to_cpu(rx_desc
->wb
.upper
.vlan
));
4385 netif_receive_skb(skb
);
4389 static inline void igb_rx_checksum_adv(struct igb_adapter
*adapter
,
4390 u32 status_err
, struct sk_buff
*skb
)
4392 skb
->ip_summed
= CHECKSUM_NONE
;
4394 /* Ignore Checksum bit is set or checksum is disabled through ethtool */
4395 if ((status_err
& E1000_RXD_STAT_IXSM
) || !adapter
->rx_csum
)
4397 /* TCP/UDP checksum error bit is set */
4399 (E1000_RXDEXT_STATERR_TCPE
| E1000_RXDEXT_STATERR_IPE
)) {
4400 /* let the stack verify checksum errors */
4401 adapter
->hw_csum_err
++;
4404 /* It must be a TCP or UDP packet with a valid checksum */
4405 if (status_err
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
))
4406 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
4408 adapter
->hw_csum_good
++;
4411 static bool igb_clean_rx_irq_adv(struct igb_ring
*rx_ring
,
4412 int *work_done
, int budget
)
4414 struct igb_adapter
*adapter
= rx_ring
->adapter
;
4415 struct net_device
*netdev
= adapter
->netdev
;
4416 struct e1000_hw
*hw
= &adapter
->hw
;
4417 struct pci_dev
*pdev
= adapter
->pdev
;
4418 union e1000_adv_rx_desc
*rx_desc
, *next_rxd
;
4419 struct igb_buffer
*buffer_info
, *next_buffer
;
4420 struct sk_buff
*skb
;
4421 bool cleaned
= false;
4422 int cleaned_count
= 0;
4423 unsigned int total_bytes
= 0, total_packets
= 0;
4425 u32 length
, hlen
, staterr
;
4427 i
= rx_ring
->next_to_clean
;
4428 buffer_info
= &rx_ring
->buffer_info
[i
];
4429 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
4430 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
4432 while (staterr
& E1000_RXD_STAT_DD
) {
4433 if (*work_done
>= budget
)
4437 skb
= buffer_info
->skb
;
4438 prefetch(skb
->data
- NET_IP_ALIGN
);
4439 buffer_info
->skb
= NULL
;
4442 if (i
== rx_ring
->count
)
4444 next_rxd
= E1000_RX_DESC_ADV(*rx_ring
, i
);
4446 next_buffer
= &rx_ring
->buffer_info
[i
];
4448 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
4452 if (!adapter
->rx_ps_hdr_size
) {
4453 pci_unmap_single(pdev
, buffer_info
->dma
,
4454 adapter
->rx_buffer_len
+
4456 PCI_DMA_FROMDEVICE
);
4457 skb_put(skb
, length
);
4461 /* HW will not DMA in data larger than the given buffer, even
4462 * if it parses the (NFS, of course) header to be larger. In
4463 * that case, it fills the header buffer and spills the rest
4466 hlen
= (le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hdr_info
) &
4467 E1000_RXDADV_HDRBUFLEN_MASK
) >> E1000_RXDADV_HDRBUFLEN_SHIFT
;
4468 if (hlen
> adapter
->rx_ps_hdr_size
)
4469 hlen
= adapter
->rx_ps_hdr_size
;
4471 if (!skb_shinfo(skb
)->nr_frags
) {
4472 pci_unmap_single(pdev
, buffer_info
->dma
,
4473 adapter
->rx_ps_hdr_size
+ NET_IP_ALIGN
,
4474 PCI_DMA_FROMDEVICE
);
4479 pci_unmap_page(pdev
, buffer_info
->page_dma
,
4480 PAGE_SIZE
/ 2, PCI_DMA_FROMDEVICE
);
4481 buffer_info
->page_dma
= 0;
4483 skb_fill_page_desc(skb
, skb_shinfo(skb
)->nr_frags
++,
4485 buffer_info
->page_offset
,
4488 if ((adapter
->rx_buffer_len
> (PAGE_SIZE
/ 2)) ||
4489 (page_count(buffer_info
->page
) != 1))
4490 buffer_info
->page
= NULL
;
4492 get_page(buffer_info
->page
);
4495 skb
->data_len
+= length
;
4497 skb
->truesize
+= length
;
4500 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
4501 buffer_info
->skb
= next_buffer
->skb
;
4502 buffer_info
->dma
= next_buffer
->dma
;
4503 next_buffer
->skb
= skb
;
4504 next_buffer
->dma
= 0;
4509 * If this bit is set, then the RX registers contain
4510 * the time stamp. No other packet will be time
4511 * stamped until we read these registers, so read the
4512 * registers to make them available again. Because
4513 * only one packet can be time stamped at a time, we
4514 * know that the register values must belong to this
4515 * one here and therefore we don't need to compare
4516 * any of the additional attributes stored for it.
4518 * If nothing went wrong, then it should have a
4519 * skb_shared_tx that we can turn into a
4520 * skb_shared_hwtstamps.
4522 * TODO: can time stamping be triggered (thus locking
4523 * the registers) without the packet reaching this point
4524 * here? In that case RX time stamping would get stuck.
4526 * TODO: in "time stamp all packets" mode this bit is
4527 * not set. Need a global flag for this mode and then
4528 * always read the registers. Cannot be done without
4531 if (unlikely(staterr
& E1000_RXD_STAT_TS
)) {
4534 struct skb_shared_hwtstamps
*shhwtstamps
=
4537 WARN(!(rd32(E1000_TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
),
4538 "igb: no RX time stamp available for time stamped packet");
4539 regval
= rd32(E1000_RXSTMPL
);
4540 regval
|= (u64
)rd32(E1000_RXSTMPH
) << 32;
4541 ns
= timecounter_cyc2time(&adapter
->clock
, regval
);
4542 timecompare_update(&adapter
->compare
, ns
);
4543 memset(shhwtstamps
, 0, sizeof(*shhwtstamps
));
4544 shhwtstamps
->hwtstamp
= ns_to_ktime(ns
);
4545 shhwtstamps
->syststamp
=
4546 timecompare_transform(&adapter
->compare
, ns
);
4549 if (staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) {
4550 dev_kfree_skb_irq(skb
);
4554 total_bytes
+= skb
->len
;
4557 igb_rx_checksum_adv(adapter
, staterr
, skb
);
4559 skb
->protocol
= eth_type_trans(skb
, netdev
);
4561 igb_receive_skb(rx_ring
, staterr
, rx_desc
, skb
);
4564 rx_desc
->wb
.upper
.status_error
= 0;
4566 /* return some buffers to hardware, one at a time is too slow */
4567 if (cleaned_count
>= IGB_RX_BUFFER_WRITE
) {
4568 igb_alloc_rx_buffers_adv(rx_ring
, cleaned_count
);
4572 /* use prefetched values */
4574 buffer_info
= next_buffer
;
4575 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
4578 rx_ring
->next_to_clean
= i
;
4579 cleaned_count
= IGB_DESC_UNUSED(rx_ring
);
4582 igb_alloc_rx_buffers_adv(rx_ring
, cleaned_count
);
4584 rx_ring
->total_packets
+= total_packets
;
4585 rx_ring
->total_bytes
+= total_bytes
;
4586 rx_ring
->rx_stats
.packets
+= total_packets
;
4587 rx_ring
->rx_stats
.bytes
+= total_bytes
;
4588 adapter
->net_stats
.rx_bytes
+= total_bytes
;
4589 adapter
->net_stats
.rx_packets
+= total_packets
;
4594 * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
4595 * @adapter: address of board private structure
4597 static void igb_alloc_rx_buffers_adv(struct igb_ring
*rx_ring
,
4600 struct igb_adapter
*adapter
= rx_ring
->adapter
;
4601 struct net_device
*netdev
= adapter
->netdev
;
4602 struct pci_dev
*pdev
= adapter
->pdev
;
4603 union e1000_adv_rx_desc
*rx_desc
;
4604 struct igb_buffer
*buffer_info
;
4605 struct sk_buff
*skb
;
4609 i
= rx_ring
->next_to_use
;
4610 buffer_info
= &rx_ring
->buffer_info
[i
];
4612 if (adapter
->rx_ps_hdr_size
)
4613 bufsz
= adapter
->rx_ps_hdr_size
;
4615 bufsz
= adapter
->rx_buffer_len
;
4616 bufsz
+= NET_IP_ALIGN
;
4618 while (cleaned_count
--) {
4619 rx_desc
= E1000_RX_DESC_ADV(*rx_ring
, i
);
4621 if (adapter
->rx_ps_hdr_size
&& !buffer_info
->page_dma
) {
4622 if (!buffer_info
->page
) {
4623 buffer_info
->page
= alloc_page(GFP_ATOMIC
);
4624 if (!buffer_info
->page
) {
4625 adapter
->alloc_rx_buff_failed
++;
4628 buffer_info
->page_offset
= 0;
4630 buffer_info
->page_offset
^= PAGE_SIZE
/ 2;
4632 buffer_info
->page_dma
=
4633 pci_map_page(pdev
, buffer_info
->page
,
4634 buffer_info
->page_offset
,
4636 PCI_DMA_FROMDEVICE
);
4639 if (!buffer_info
->skb
) {
4640 skb
= netdev_alloc_skb(netdev
, bufsz
);
4642 adapter
->alloc_rx_buff_failed
++;
4646 /* Make buffer alignment 2 beyond a 16 byte boundary
4647 * this will result in a 16 byte aligned IP header after
4648 * the 14 byte MAC header is removed
4650 skb_reserve(skb
, NET_IP_ALIGN
);
4652 buffer_info
->skb
= skb
;
4653 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4655 PCI_DMA_FROMDEVICE
);
4657 /* Refresh the desc even if buffer_addrs didn't change because
4658 * each write-back erases this info. */
4659 if (adapter
->rx_ps_hdr_size
) {
4660 rx_desc
->read
.pkt_addr
=
4661 cpu_to_le64(buffer_info
->page_dma
);
4662 rx_desc
->read
.hdr_addr
= cpu_to_le64(buffer_info
->dma
);
4664 rx_desc
->read
.pkt_addr
=
4665 cpu_to_le64(buffer_info
->dma
);
4666 rx_desc
->read
.hdr_addr
= 0;
4670 if (i
== rx_ring
->count
)
4672 buffer_info
= &rx_ring
->buffer_info
[i
];
4676 if (rx_ring
->next_to_use
!= i
) {
4677 rx_ring
->next_to_use
= i
;
4679 i
= (rx_ring
->count
- 1);
4683 /* Force memory writes to complete before letting h/w
4684 * know there are new descriptors to fetch. (Only
4685 * applicable for weak-ordered memory model archs,
4686 * such as IA-64). */
4688 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->tail
);
4698 static int igb_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4700 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4701 struct mii_ioctl_data
*data
= if_mii(ifr
);
4703 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
4708 data
->phy_id
= adapter
->hw
.phy
.addr
;
4711 if (!capable(CAP_NET_ADMIN
))
4713 if (igb_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4725 * igb_hwtstamp_ioctl - control hardware time stamping
4730 * Outgoing time stamping can be enabled and disabled. Play nice and
4731 * disable it when requested, although it shouldn't case any overhead
4732 * when no packet needs it. At most one packet in the queue may be
4733 * marked for time stamping, otherwise it would be impossible to tell
4734 * for sure to which packet the hardware time stamp belongs.
4736 * Incoming time stamping has to be configured via the hardware
4737 * filters. Not all combinations are supported, in particular event
4738 * type has to be specified. Matching the kind of event packet is
4739 * not supported, with the exception of "all V2 events regardless of
4743 static int igb_hwtstamp_ioctl(struct net_device
*netdev
,
4744 struct ifreq
*ifr
, int cmd
)
4746 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4747 struct e1000_hw
*hw
= &adapter
->hw
;
4748 struct hwtstamp_config config
;
4749 u32 tsync_tx_ctl_bit
= E1000_TSYNCTXCTL_ENABLED
;
4750 u32 tsync_rx_ctl_bit
= E1000_TSYNCRXCTL_ENABLED
;
4751 u32 tsync_rx_ctl_type
= 0;
4752 u32 tsync_rx_cfg
= 0;
4755 short port
= 319; /* PTP */
4758 if (copy_from_user(&config
, ifr
->ifr_data
, sizeof(config
)))
4761 /* reserved for future extensions */
4765 switch (config
.tx_type
) {
4766 case HWTSTAMP_TX_OFF
:
4767 tsync_tx_ctl_bit
= 0;
4769 case HWTSTAMP_TX_ON
:
4770 tsync_tx_ctl_bit
= E1000_TSYNCTXCTL_ENABLED
;
4776 switch (config
.rx_filter
) {
4777 case HWTSTAMP_FILTER_NONE
:
4778 tsync_rx_ctl_bit
= 0;
4780 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT
:
4781 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT
:
4782 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT
:
4783 case HWTSTAMP_FILTER_ALL
:
4785 * register TSYNCRXCFG must be set, therefore it is not
4786 * possible to time stamp both Sync and Delay_Req messages
4787 * => fall back to time stamping all packets
4789 tsync_rx_ctl_type
= E1000_TSYNCRXCTL_TYPE_ALL
;
4790 config
.rx_filter
= HWTSTAMP_FILTER_ALL
;
4792 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC
:
4793 tsync_rx_ctl_type
= E1000_TSYNCRXCTL_TYPE_L4_V1
;
4794 tsync_rx_cfg
= E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE
;
4797 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ
:
4798 tsync_rx_ctl_type
= E1000_TSYNCRXCTL_TYPE_L4_V1
;
4799 tsync_rx_cfg
= E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE
;
4802 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
4803 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
4804 tsync_rx_ctl_type
= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
4805 tsync_rx_cfg
= E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE
;
4808 config
.rx_filter
= HWTSTAMP_FILTER_SOME
;
4810 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
4811 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
4812 tsync_rx_ctl_type
= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
4813 tsync_rx_cfg
= E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE
;
4816 config
.rx_filter
= HWTSTAMP_FILTER_SOME
;
4818 case HWTSTAMP_FILTER_PTP_V2_EVENT
:
4819 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
4820 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
4821 tsync_rx_ctl_type
= E1000_TSYNCRXCTL_TYPE_EVENT_V2
;
4822 config
.rx_filter
= HWTSTAMP_FILTER_PTP_V2_EVENT
;
4829 /* enable/disable TX */
4830 regval
= rd32(E1000_TSYNCTXCTL
);
4831 regval
= (regval
& ~E1000_TSYNCTXCTL_ENABLED
) | tsync_tx_ctl_bit
;
4832 wr32(E1000_TSYNCTXCTL
, regval
);
4834 /* enable/disable RX, define which PTP packets are time stamped */
4835 regval
= rd32(E1000_TSYNCRXCTL
);
4836 regval
= (regval
& ~E1000_TSYNCRXCTL_ENABLED
) | tsync_rx_ctl_bit
;
4837 regval
= (regval
& ~0xE) | tsync_rx_ctl_type
;
4838 wr32(E1000_TSYNCRXCTL
, regval
);
4839 wr32(E1000_TSYNCRXCFG
, tsync_rx_cfg
);
4842 * Ethertype Filter Queue Filter[0][15:0] = 0x88F7
4843 * (Ethertype to filter on)
4844 * Ethertype Filter Queue Filter[0][26] = 0x1 (Enable filter)
4845 * Ethertype Filter Queue Filter[0][30] = 0x1 (Enable Timestamping)
4847 wr32(E1000_ETQF0
, is_l2
? 0x440088f7 : 0);
4849 /* L4 Queue Filter[0]: only filter by source and destination port */
4850 wr32(E1000_SPQF0
, htons(port
));
4851 wr32(E1000_IMIREXT(0), is_l4
?
4852 ((1<<12) | (1<<19) /* bypass size and control flags */) : 0);
4853 wr32(E1000_IMIR(0), is_l4
?
4855 | (0<<16) /* immediate interrupt disabled */
4856 | 0 /* (1<<17) bit cleared: do not bypass
4857 destination port check */)
4859 wr32(E1000_FTQF0
, is_l4
?
4861 | (1<<15) /* VF not compared */
4862 | (1<<27) /* Enable Timestamping */
4863 | (7<<28) /* only source port filter enabled,
4864 source/target address and protocol
4866 : ((1<<15) | (15<<28) /* all mask bits set = filter not
4871 adapter
->hwtstamp_config
= config
;
4873 /* clear TX/RX time stamp registers, just to be sure */
4874 regval
= rd32(E1000_TXSTMPH
);
4875 regval
= rd32(E1000_RXSTMPH
);
4877 return copy_to_user(ifr
->ifr_data
, &config
, sizeof(config
)) ?
4887 static int igb_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4893 return igb_mii_ioctl(netdev
, ifr
, cmd
);
4895 return igb_hwtstamp_ioctl(netdev
, ifr
, cmd
);
4901 static void igb_vlan_rx_register(struct net_device
*netdev
,
4902 struct vlan_group
*grp
)
4904 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4905 struct e1000_hw
*hw
= &adapter
->hw
;
4908 igb_irq_disable(adapter
);
4909 adapter
->vlgrp
= grp
;
4912 /* enable VLAN tag insert/strip */
4913 ctrl
= rd32(E1000_CTRL
);
4914 ctrl
|= E1000_CTRL_VME
;
4915 wr32(E1000_CTRL
, ctrl
);
4917 /* enable VLAN receive filtering */
4918 rctl
= rd32(E1000_RCTL
);
4919 rctl
&= ~E1000_RCTL_CFIEN
;
4920 wr32(E1000_RCTL
, rctl
);
4921 igb_update_mng_vlan(adapter
);
4923 /* disable VLAN tag insert/strip */
4924 ctrl
= rd32(E1000_CTRL
);
4925 ctrl
&= ~E1000_CTRL_VME
;
4926 wr32(E1000_CTRL
, ctrl
);
4928 if (adapter
->mng_vlan_id
!= (u16
)IGB_MNG_VLAN_NONE
) {
4929 igb_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4930 adapter
->mng_vlan_id
= IGB_MNG_VLAN_NONE
;
4934 igb_rlpml_set(adapter
);
4936 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4937 igb_irq_enable(adapter
);
4940 static void igb_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4942 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4943 struct e1000_hw
*hw
= &adapter
->hw
;
4944 int pf_id
= adapter
->vfs_allocated_count
;
4946 if ((hw
->mng_cookie
.status
&
4947 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
4948 (vid
== adapter
->mng_vlan_id
))
4951 /* add vid to vlvf if sr-iov is enabled,
4952 * if that fails add directly to filter table */
4953 if (igb_vlvf_set(adapter
, vid
, true, pf_id
))
4954 igb_vfta_set(hw
, vid
, true);
4958 static void igb_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4960 struct igb_adapter
*adapter
= netdev_priv(netdev
);
4961 struct e1000_hw
*hw
= &adapter
->hw
;
4962 int pf_id
= adapter
->vfs_allocated_count
;
4964 igb_irq_disable(adapter
);
4965 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4967 if (!test_bit(__IGB_DOWN
, &adapter
->state
))
4968 igb_irq_enable(adapter
);
4970 if ((adapter
->hw
.mng_cookie
.status
&
4971 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
4972 (vid
== adapter
->mng_vlan_id
)) {
4973 /* release control to f/w */
4974 igb_release_hw_control(adapter
);
4978 /* remove vid from vlvf if sr-iov is enabled,
4979 * if not in vlvf remove from vfta */
4980 if (igb_vlvf_set(adapter
, vid
, false, pf_id
))
4981 igb_vfta_set(hw
, vid
, false);
4984 static void igb_restore_vlan(struct igb_adapter
*adapter
)
4986 igb_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4988 if (adapter
->vlgrp
) {
4990 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4991 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4993 igb_vlan_rx_add_vid(adapter
->netdev
, vid
);
4998 int igb_set_spd_dplx(struct igb_adapter
*adapter
, u16 spddplx
)
5000 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
5004 /* Fiber NICs only allow 1000 gbps Full duplex */
5005 if ((adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
) &&
5006 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
5007 dev_err(&adapter
->pdev
->dev
,
5008 "Unsupported Speed/Duplex configuration\n");
5013 case SPEED_10
+ DUPLEX_HALF
:
5014 mac
->forced_speed_duplex
= ADVERTISE_10_HALF
;
5016 case SPEED_10
+ DUPLEX_FULL
:
5017 mac
->forced_speed_duplex
= ADVERTISE_10_FULL
;
5019 case SPEED_100
+ DUPLEX_HALF
:
5020 mac
->forced_speed_duplex
= ADVERTISE_100_HALF
;
5022 case SPEED_100
+ DUPLEX_FULL
:
5023 mac
->forced_speed_duplex
= ADVERTISE_100_FULL
;
5025 case SPEED_1000
+ DUPLEX_FULL
:
5027 adapter
->hw
.phy
.autoneg_advertised
= ADVERTISE_1000_FULL
;
5029 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
5031 dev_err(&adapter
->pdev
->dev
,
5032 "Unsupported Speed/Duplex configuration\n");
5038 static int igb_suspend(struct pci_dev
*pdev
, pm_message_t state
)
5040 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5041 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5042 struct e1000_hw
*hw
= &adapter
->hw
;
5043 u32 ctrl
, rctl
, status
;
5044 u32 wufc
= adapter
->wol
;
5049 netif_device_detach(netdev
);
5051 if (netif_running(netdev
))
5054 igb_reset_interrupt_capability(adapter
);
5056 igb_free_queues(adapter
);
5059 retval
= pci_save_state(pdev
);
5064 status
= rd32(E1000_STATUS
);
5065 if (status
& E1000_STATUS_LU
)
5066 wufc
&= ~E1000_WUFC_LNKC
;
5069 igb_setup_rctl(adapter
);
5070 igb_set_multi(netdev
);
5072 /* turn on all-multi mode if wake on multicast is enabled */
5073 if (wufc
& E1000_WUFC_MC
) {
5074 rctl
= rd32(E1000_RCTL
);
5075 rctl
|= E1000_RCTL_MPE
;
5076 wr32(E1000_RCTL
, rctl
);
5079 ctrl
= rd32(E1000_CTRL
);
5080 /* advertise wake from D3Cold */
5081 #define E1000_CTRL_ADVD3WUC 0x00100000
5082 /* phy power management enable */
5083 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5084 ctrl
|= E1000_CTRL_ADVD3WUC
;
5085 wr32(E1000_CTRL
, ctrl
);
5087 /* Allow time for pending master requests to run */
5088 igb_disable_pcie_master(&adapter
->hw
);
5090 wr32(E1000_WUC
, E1000_WUC_PME_EN
);
5091 wr32(E1000_WUFC
, wufc
);
5094 wr32(E1000_WUFC
, 0);
5097 /* make sure adapter isn't asleep if manageability/wol is enabled */
5098 if (wufc
|| adapter
->en_mng_pt
) {
5099 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5100 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5102 igb_shutdown_fiber_serdes_link_82575(hw
);
5103 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5104 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5107 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5108 * would have already happened in close and is redundant. */
5109 igb_release_hw_control(adapter
);
5111 pci_disable_device(pdev
);
5113 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
5119 static int igb_resume(struct pci_dev
*pdev
)
5121 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5122 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5123 struct e1000_hw
*hw
= &adapter
->hw
;
5126 pci_set_power_state(pdev
, PCI_D0
);
5127 pci_restore_state(pdev
);
5129 err
= pci_enable_device_mem(pdev
);
5132 "igb: Cannot enable PCI device from suspend\n");
5135 pci_set_master(pdev
);
5137 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5138 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5140 igb_set_interrupt_capability(adapter
);
5142 if (igb_alloc_queues(adapter
)) {
5143 dev_err(&pdev
->dev
, "Unable to allocate memory for queues\n");
5147 /* e1000_power_up_phy(adapter); */
5151 /* let the f/w know that the h/w is now under the control of the
5153 igb_get_hw_control(adapter
);
5155 wr32(E1000_WUS
, ~0);
5157 if (netif_running(netdev
)) {
5158 err
= igb_open(netdev
);
5163 netif_device_attach(netdev
);
5169 static void igb_shutdown(struct pci_dev
*pdev
)
5171 igb_suspend(pdev
, PMSG_SUSPEND
);
5174 #ifdef CONFIG_NET_POLL_CONTROLLER
5176 * Polling 'interrupt' - used by things like netconsole to send skbs
5177 * without having to re-enable interrupts. It's not called while
5178 * the interrupt routine is executing.
5180 static void igb_netpoll(struct net_device
*netdev
)
5182 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5183 struct e1000_hw
*hw
= &adapter
->hw
;
5186 if (!adapter
->msix_entries
) {
5187 igb_irq_disable(adapter
);
5188 napi_schedule(&adapter
->rx_ring
[0].napi
);
5192 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
5193 struct igb_ring
*tx_ring
= &adapter
->tx_ring
[i
];
5194 wr32(E1000_EIMC
, tx_ring
->eims_value
);
5195 igb_clean_tx_irq(tx_ring
);
5196 wr32(E1000_EIMS
, tx_ring
->eims_value
);
5199 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
5200 struct igb_ring
*rx_ring
= &adapter
->rx_ring
[i
];
5201 wr32(E1000_EIMC
, rx_ring
->eims_value
);
5202 napi_schedule(&rx_ring
->napi
);
5205 #endif /* CONFIG_NET_POLL_CONTROLLER */
5208 * igb_io_error_detected - called when PCI error is detected
5209 * @pdev: Pointer to PCI device
5210 * @state: The current pci connection state
5212 * This function is called after a PCI bus error affecting
5213 * this device has been detected.
5215 static pci_ers_result_t
igb_io_error_detected(struct pci_dev
*pdev
,
5216 pci_channel_state_t state
)
5218 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5219 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5221 netif_device_detach(netdev
);
5223 if (netif_running(netdev
))
5225 pci_disable_device(pdev
);
5227 /* Request a slot slot reset. */
5228 return PCI_ERS_RESULT_NEED_RESET
;
5232 * igb_io_slot_reset - called after the pci bus has been reset.
5233 * @pdev: Pointer to PCI device
5235 * Restart the card from scratch, as if from a cold-boot. Implementation
5236 * resembles the first-half of the igb_resume routine.
5238 static pci_ers_result_t
igb_io_slot_reset(struct pci_dev
*pdev
)
5240 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5241 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5242 struct e1000_hw
*hw
= &adapter
->hw
;
5243 pci_ers_result_t result
;
5246 if (pci_enable_device_mem(pdev
)) {
5248 "Cannot re-enable PCI device after reset.\n");
5249 result
= PCI_ERS_RESULT_DISCONNECT
;
5251 pci_set_master(pdev
);
5252 pci_restore_state(pdev
);
5254 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5255 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5258 wr32(E1000_WUS
, ~0);
5259 result
= PCI_ERS_RESULT_RECOVERED
;
5262 err
= pci_cleanup_aer_uncorrect_error_status(pdev
);
5264 dev_err(&pdev
->dev
, "pci_cleanup_aer_uncorrect_error_status "
5265 "failed 0x%0x\n", err
);
5266 /* non-fatal, continue */
5273 * igb_io_resume - called when traffic can start flowing again.
5274 * @pdev: Pointer to PCI device
5276 * This callback is called when the error recovery driver tells us that
5277 * its OK to resume normal operation. Implementation resembles the
5278 * second-half of the igb_resume routine.
5280 static void igb_io_resume(struct pci_dev
*pdev
)
5282 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5283 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5285 if (netif_running(netdev
)) {
5286 if (igb_up(adapter
)) {
5287 dev_err(&pdev
->dev
, "igb_up failed after reset\n");
5292 netif_device_attach(netdev
);
5294 /* let the f/w know that the h/w is now under the control of the
5296 igb_get_hw_control(adapter
);
5299 static inline void igb_set_vmolr(struct e1000_hw
*hw
, int vfn
)
5303 reg_data
= rd32(E1000_VMOLR(vfn
));
5304 reg_data
|= E1000_VMOLR_BAM
| /* Accept broadcast */
5305 E1000_VMOLR_ROPE
| /* Accept packets matched in UTA */
5306 E1000_VMOLR_ROMPE
| /* Accept packets matched in MTA */
5307 E1000_VMOLR_AUPE
| /* Accept untagged packets */
5308 E1000_VMOLR_STRVLAN
; /* Strip vlan tags */
5309 wr32(E1000_VMOLR(vfn
), reg_data
);
5312 static inline int igb_set_vf_rlpml(struct igb_adapter
*adapter
, int size
,
5315 struct e1000_hw
*hw
= &adapter
->hw
;
5318 vmolr
= rd32(E1000_VMOLR(vfn
));
5319 vmolr
&= ~E1000_VMOLR_RLPML_MASK
;
5320 vmolr
|= size
| E1000_VMOLR_LPE
;
5321 wr32(E1000_VMOLR(vfn
), vmolr
);
5326 static inline void igb_set_rah_pool(struct e1000_hw
*hw
, int pool
, int entry
)
5330 reg_data
= rd32(E1000_RAH(entry
));
5331 reg_data
&= ~E1000_RAH_POOL_MASK
;
5332 reg_data
|= E1000_RAH_POOL_1
<< pool
;;
5333 wr32(E1000_RAH(entry
), reg_data
);
5336 static void igb_set_mc_list_pools(struct igb_adapter
*adapter
,
5337 int entry_count
, u16 total_rar_filters
)
5339 struct e1000_hw
*hw
= &adapter
->hw
;
5340 int i
= adapter
->vfs_allocated_count
+ 1;
5342 if ((i
+ entry_count
) < total_rar_filters
)
5343 total_rar_filters
= i
+ entry_count
;
5345 for (; i
< total_rar_filters
; i
++)
5346 igb_set_rah_pool(hw
, adapter
->vfs_allocated_count
, i
);
5349 static int igb_set_vf_mac(struct igb_adapter
*adapter
,
5350 int vf
, unsigned char *mac_addr
)
5352 struct e1000_hw
*hw
= &adapter
->hw
;
5353 int rar_entry
= vf
+ 1; /* VF MAC addresses start at entry 1 */
5355 igb_rar_set(hw
, mac_addr
, rar_entry
);
5357 memcpy(adapter
->vf_data
[vf
].vf_mac_addresses
, mac_addr
, ETH_ALEN
);
5359 igb_set_rah_pool(hw
, vf
, rar_entry
);
5364 static void igb_vmm_control(struct igb_adapter
*adapter
)
5366 struct e1000_hw
*hw
= &adapter
->hw
;
5369 if (!adapter
->vfs_allocated_count
)
5372 /* VF's need PF reset indication before they
5373 * can send/receive mail */
5374 reg_data
= rd32(E1000_CTRL_EXT
);
5375 reg_data
|= E1000_CTRL_EXT_PFRSTD
;
5376 wr32(E1000_CTRL_EXT
, reg_data
);
5378 igb_vmdq_set_loopback_pf(hw
, true);
5379 igb_vmdq_set_replication_pf(hw
, true);
5382 #ifdef CONFIG_PCI_IOV
5383 static ssize_t
igb_show_num_vfs(struct device
*dev
,
5384 struct device_attribute
*attr
, char *buf
)
5386 struct igb_adapter
*adapter
= netdev_priv(to_net_dev(dev
));
5388 return sprintf(buf
, "%d\n", adapter
->vfs_allocated_count
);
5391 static ssize_t
igb_set_num_vfs(struct device
*dev
,
5392 struct device_attribute
*attr
,
5393 const char *buf
, size_t count
)
5395 struct net_device
*netdev
= to_net_dev(dev
);
5396 struct igb_adapter
*adapter
= netdev_priv(netdev
);
5397 struct e1000_hw
*hw
= &adapter
->hw
;
5398 struct pci_dev
*pdev
= adapter
->pdev
;
5399 unsigned int num_vfs
, i
;
5400 unsigned char mac_addr
[ETH_ALEN
];
5403 sscanf(buf
, "%u", &num_vfs
);
5408 /* value unchanged do nothing */
5409 if (num_vfs
== adapter
->vfs_allocated_count
)
5412 if (netdev
->flags
& IFF_UP
)
5415 igb_reset_interrupt_capability(adapter
);
5416 igb_free_queues(adapter
);
5417 adapter
->tx_ring
= NULL
;
5418 adapter
->rx_ring
= NULL
;
5419 adapter
->vfs_allocated_count
= 0;
5421 /* reclaim resources allocated to VFs since we are changing count */
5422 if (adapter
->vf_data
) {
5423 /* disable iov and allow time for transactions to clear */
5424 pci_disable_sriov(pdev
);
5427 kfree(adapter
->vf_data
);
5428 adapter
->vf_data
= NULL
;
5429 wr32(E1000_IOVCTL
, E1000_IOVCTL_REUSE_VFQ
);
5431 dev_info(&pdev
->dev
, "IOV Disabled\n");
5435 adapter
->vf_data
= kcalloc(num_vfs
,
5436 sizeof(struct vf_data_storage
),
5438 if (!adapter
->vf_data
) {
5439 dev_err(&pdev
->dev
, "Could not allocate VF private "
5440 "data - IOV enable failed\n");
5442 err
= pci_enable_sriov(pdev
, num_vfs
);
5444 adapter
->vfs_allocated_count
= num_vfs
;
5445 dev_info(&pdev
->dev
, "%d vfs allocated\n", num_vfs
);
5446 for (i
= 0; i
< adapter
->vfs_allocated_count
; i
++) {
5447 random_ether_addr(mac_addr
);
5448 igb_set_vf_mac(adapter
, i
, mac_addr
);
5451 kfree(adapter
->vf_data
);
5452 adapter
->vf_data
= NULL
;
5457 igb_set_interrupt_capability(adapter
);
5458 igb_alloc_queues(adapter
);
5461 if (netdev
->flags
& IFF_UP
)
5466 #endif /* CONFIG_PCI_IOV */