1 /* Intel(R) Ethernet Switch Host Interface Driver
2 * Copyright(c) 2013 - 2016 Intel Corporation.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
16 * Contact Information:
17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
21 #include <linux/module.h>
22 #include <linux/aer.h>
26 static const struct fm10k_info
*fm10k_info_tbl
[] = {
27 [fm10k_device_pf
] = &fm10k_pf_info
,
28 [fm10k_device_vf
] = &fm10k_vf_info
,
32 * fm10k_pci_tbl - PCI Device ID Table
34 * Wildcard entries (PCI_ANY_ID) should come last
35 * Last entry must be all 0s
37 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
38 * Class, Class Mask, private data (not used) }
40 static const struct pci_device_id fm10k_pci_tbl
[] = {
41 { PCI_VDEVICE(INTEL
, FM10K_DEV_ID_PF
), fm10k_device_pf
},
42 { PCI_VDEVICE(INTEL
, FM10K_DEV_ID_VF
), fm10k_device_vf
},
43 /* required last entry */
46 MODULE_DEVICE_TABLE(pci
, fm10k_pci_tbl
);
48 u16
fm10k_read_pci_cfg_word(struct fm10k_hw
*hw
, u32 reg
)
50 struct fm10k_intfc
*interface
= hw
->back
;
53 if (FM10K_REMOVED(hw
->hw_addr
))
56 pci_read_config_word(interface
->pdev
, reg
, &value
);
58 fm10k_write_flush(hw
);
63 u32
fm10k_read_reg(struct fm10k_hw
*hw
, int reg
)
65 u32 __iomem
*hw_addr
= ACCESS_ONCE(hw
->hw_addr
);
68 if (FM10K_REMOVED(hw_addr
))
71 value
= readl(&hw_addr
[reg
]);
72 if (!(~value
) && (!reg
|| !(~readl(hw_addr
)))) {
73 struct fm10k_intfc
*interface
= hw
->back
;
74 struct net_device
*netdev
= interface
->netdev
;
77 netif_device_detach(netdev
);
78 netdev_err(netdev
, "PCIe link lost, device now detached\n");
84 static int fm10k_hw_ready(struct fm10k_intfc
*interface
)
86 struct fm10k_hw
*hw
= &interface
->hw
;
88 fm10k_write_flush(hw
);
90 return FM10K_REMOVED(hw
->hw_addr
) ? -ENODEV
: 0;
93 void fm10k_service_event_schedule(struct fm10k_intfc
*interface
)
95 if (!test_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
) &&
96 !test_and_set_bit(__FM10K_SERVICE_SCHED
, &interface
->state
))
97 queue_work(fm10k_workqueue
, &interface
->service_task
);
100 static void fm10k_service_event_complete(struct fm10k_intfc
*interface
)
102 WARN_ON(!test_bit(__FM10K_SERVICE_SCHED
, &interface
->state
));
104 /* flush memory to make sure state is correct before next watchog */
105 smp_mb__before_atomic();
106 clear_bit(__FM10K_SERVICE_SCHED
, &interface
->state
);
110 * fm10k_service_timer - Timer Call-back
111 * @data: pointer to interface cast into an unsigned long
113 static void fm10k_service_timer(unsigned long data
)
115 struct fm10k_intfc
*interface
= (struct fm10k_intfc
*)data
;
117 /* Reset the timer */
118 mod_timer(&interface
->service_timer
, (HZ
* 2) + jiffies
);
120 fm10k_service_event_schedule(interface
);
123 static void fm10k_detach_subtask(struct fm10k_intfc
*interface
)
125 struct net_device
*netdev
= interface
->netdev
;
127 /* do nothing if device is still present or hw_addr is set */
128 if (netif_device_present(netdev
) || interface
->hw
.hw_addr
)
133 if (netif_running(netdev
))
139 static void fm10k_reinit(struct fm10k_intfc
*interface
)
141 struct net_device
*netdev
= interface
->netdev
;
142 struct fm10k_hw
*hw
= &interface
->hw
;
145 WARN_ON(in_interrupt());
147 /* put off any impending NetWatchDogTimeout */
148 netif_trans_update(netdev
);
150 while (test_and_set_bit(__FM10K_RESETTING
, &interface
->state
))
151 usleep_range(1000, 2000);
155 fm10k_iov_suspend(interface
->pdev
);
157 if (netif_running(netdev
))
160 fm10k_mbx_free_irq(interface
);
162 /* free interrupts */
163 fm10k_clear_queueing_scheme(interface
);
165 /* delay any future reset requests */
166 interface
->last_reset
= jiffies
+ (10 * HZ
);
168 /* reset and initialize the hardware so it is in a known state */
169 err
= hw
->mac
.ops
.reset_hw(hw
);
171 dev_err(&interface
->pdev
->dev
, "reset_hw failed: %d\n", err
);
175 err
= hw
->mac
.ops
.init_hw(hw
);
177 dev_err(&interface
->pdev
->dev
, "init_hw failed: %d\n", err
);
181 err
= fm10k_init_queueing_scheme(interface
);
183 dev_err(&interface
->pdev
->dev
,
184 "init_queueing_scheme failed: %d\n", err
);
188 /* reassociate interrupts */
189 err
= fm10k_mbx_request_irq(interface
);
193 err
= fm10k_hw_ready(interface
);
197 /* update hardware address for VFs if perm_addr has changed */
198 if (hw
->mac
.type
== fm10k_mac_vf
) {
199 if (is_valid_ether_addr(hw
->mac
.perm_addr
)) {
200 ether_addr_copy(hw
->mac
.addr
, hw
->mac
.perm_addr
);
201 ether_addr_copy(netdev
->perm_addr
, hw
->mac
.perm_addr
);
202 ether_addr_copy(netdev
->dev_addr
, hw
->mac
.perm_addr
);
203 netdev
->addr_assign_type
&= ~NET_ADDR_RANDOM
;
206 if (hw
->mac
.vlan_override
)
207 netdev
->features
&= ~NETIF_F_HW_VLAN_CTAG_RX
;
209 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_RX
;
212 err
= netif_running(netdev
) ? fm10k_open(netdev
) : 0;
216 fm10k_iov_resume(interface
->pdev
);
220 clear_bit(__FM10K_RESETTING
, &interface
->state
);
224 fm10k_mbx_free_irq(interface
);
226 fm10k_clear_queueing_scheme(interface
);
228 netif_device_detach(netdev
);
232 clear_bit(__FM10K_RESETTING
, &interface
->state
);
235 static void fm10k_reset_subtask(struct fm10k_intfc
*interface
)
237 if (!(interface
->flags
& FM10K_FLAG_RESET_REQUESTED
))
240 interface
->flags
&= ~FM10K_FLAG_RESET_REQUESTED
;
242 netdev_err(interface
->netdev
, "Reset interface\n");
244 fm10k_reinit(interface
);
248 * fm10k_configure_swpri_map - Configure Receive SWPRI to PC mapping
249 * @interface: board private structure
251 * Configure the SWPRI to PC mapping for the port.
253 static void fm10k_configure_swpri_map(struct fm10k_intfc
*interface
)
255 struct net_device
*netdev
= interface
->netdev
;
256 struct fm10k_hw
*hw
= &interface
->hw
;
259 /* clear flag indicating update is needed */
260 interface
->flags
&= ~FM10K_FLAG_SWPRI_CONFIG
;
262 /* these registers are only available on the PF */
263 if (hw
->mac
.type
!= fm10k_mac_pf
)
266 /* configure SWPRI to PC map */
267 for (i
= 0; i
< FM10K_SWPRI_MAX
; i
++)
268 fm10k_write_reg(hw
, FM10K_SWPRI_MAP(i
),
269 netdev_get_prio_tc_map(netdev
, i
));
273 * fm10k_watchdog_update_host_state - Update the link status based on host.
274 * @interface: board private structure
276 static void fm10k_watchdog_update_host_state(struct fm10k_intfc
*interface
)
278 struct fm10k_hw
*hw
= &interface
->hw
;
281 if (test_bit(__FM10K_LINK_DOWN
, &interface
->state
)) {
282 interface
->host_ready
= false;
283 if (time_is_after_jiffies(interface
->link_down_event
))
285 clear_bit(__FM10K_LINK_DOWN
, &interface
->state
);
288 if (interface
->flags
& FM10K_FLAG_SWPRI_CONFIG
) {
289 if (rtnl_trylock()) {
290 fm10k_configure_swpri_map(interface
);
295 /* lock the mailbox for transmit and receive */
296 fm10k_mbx_lock(interface
);
298 err
= hw
->mac
.ops
.get_host_state(hw
, &interface
->host_ready
);
299 if (err
&& time_is_before_jiffies(interface
->last_reset
))
300 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
303 fm10k_mbx_unlock(interface
);
307 * fm10k_mbx_subtask - Process upstream and downstream mailboxes
308 * @interface: board private structure
310 * This function will process both the upstream and downstream mailboxes.
312 static void fm10k_mbx_subtask(struct fm10k_intfc
*interface
)
314 /* process upstream mailbox and update device state */
315 fm10k_watchdog_update_host_state(interface
);
317 /* process downstream mailboxes */
318 fm10k_iov_mbx(interface
);
322 * fm10k_watchdog_host_is_ready - Update netdev status based on host ready
323 * @interface: board private structure
325 static void fm10k_watchdog_host_is_ready(struct fm10k_intfc
*interface
)
327 struct net_device
*netdev
= interface
->netdev
;
329 /* only continue if link state is currently down */
330 if (netif_carrier_ok(netdev
))
333 netif_info(interface
, drv
, netdev
, "NIC Link is up\n");
335 netif_carrier_on(netdev
);
336 netif_tx_wake_all_queues(netdev
);
340 * fm10k_watchdog_host_not_ready - Update netdev status based on host not ready
341 * @interface: board private structure
343 static void fm10k_watchdog_host_not_ready(struct fm10k_intfc
*interface
)
345 struct net_device
*netdev
= interface
->netdev
;
347 /* only continue if link state is currently up */
348 if (!netif_carrier_ok(netdev
))
351 netif_info(interface
, drv
, netdev
, "NIC Link is down\n");
353 netif_carrier_off(netdev
);
354 netif_tx_stop_all_queues(netdev
);
358 * fm10k_update_stats - Update the board statistics counters.
359 * @interface: board private structure
361 void fm10k_update_stats(struct fm10k_intfc
*interface
)
363 struct net_device_stats
*net_stats
= &interface
->netdev
->stats
;
364 struct fm10k_hw
*hw
= &interface
->hw
;
365 u64 hw_csum_tx_good
= 0, hw_csum_rx_good
= 0, rx_length_errors
= 0;
366 u64 rx_switch_errors
= 0, rx_drops
= 0, rx_pp_errors
= 0;
367 u64 rx_link_errors
= 0;
368 u64 rx_errors
= 0, rx_csum_errors
= 0, tx_csum_errors
= 0;
369 u64 restart_queue
= 0, tx_busy
= 0, alloc_failed
= 0;
370 u64 rx_bytes_nic
= 0, rx_pkts_nic
= 0, rx_drops_nic
= 0;
371 u64 tx_bytes_nic
= 0, tx_pkts_nic
= 0;
375 /* do not allow stats update via service task for next second */
376 interface
->next_stats_update
= jiffies
+ HZ
;
378 /* gather some stats to the interface struct that are per queue */
379 for (bytes
= 0, pkts
= 0, i
= 0; i
< interface
->num_tx_queues
; i
++) {
380 struct fm10k_ring
*tx_ring
= interface
->tx_ring
[i
];
382 restart_queue
+= tx_ring
->tx_stats
.restart_queue
;
383 tx_busy
+= tx_ring
->tx_stats
.tx_busy
;
384 tx_csum_errors
+= tx_ring
->tx_stats
.csum_err
;
385 bytes
+= tx_ring
->stats
.bytes
;
386 pkts
+= tx_ring
->stats
.packets
;
387 hw_csum_tx_good
+= tx_ring
->tx_stats
.csum_good
;
390 interface
->restart_queue
= restart_queue
;
391 interface
->tx_busy
= tx_busy
;
392 net_stats
->tx_bytes
= bytes
;
393 net_stats
->tx_packets
= pkts
;
394 interface
->tx_csum_errors
= tx_csum_errors
;
395 interface
->hw_csum_tx_good
= hw_csum_tx_good
;
397 /* gather some stats to the interface struct that are per queue */
398 for (bytes
= 0, pkts
= 0, i
= 0; i
< interface
->num_rx_queues
; i
++) {
399 struct fm10k_ring
*rx_ring
= interface
->rx_ring
[i
];
401 bytes
+= rx_ring
->stats
.bytes
;
402 pkts
+= rx_ring
->stats
.packets
;
403 alloc_failed
+= rx_ring
->rx_stats
.alloc_failed
;
404 rx_csum_errors
+= rx_ring
->rx_stats
.csum_err
;
405 rx_errors
+= rx_ring
->rx_stats
.errors
;
406 hw_csum_rx_good
+= rx_ring
->rx_stats
.csum_good
;
407 rx_switch_errors
+= rx_ring
->rx_stats
.switch_errors
;
408 rx_drops
+= rx_ring
->rx_stats
.drops
;
409 rx_pp_errors
+= rx_ring
->rx_stats
.pp_errors
;
410 rx_link_errors
+= rx_ring
->rx_stats
.link_errors
;
411 rx_length_errors
+= rx_ring
->rx_stats
.length_errors
;
414 net_stats
->rx_bytes
= bytes
;
415 net_stats
->rx_packets
= pkts
;
416 interface
->alloc_failed
= alloc_failed
;
417 interface
->rx_csum_errors
= rx_csum_errors
;
418 interface
->hw_csum_rx_good
= hw_csum_rx_good
;
419 interface
->rx_switch_errors
= rx_switch_errors
;
420 interface
->rx_drops
= rx_drops
;
421 interface
->rx_pp_errors
= rx_pp_errors
;
422 interface
->rx_link_errors
= rx_link_errors
;
423 interface
->rx_length_errors
= rx_length_errors
;
425 hw
->mac
.ops
.update_hw_stats(hw
, &interface
->stats
);
427 for (i
= 0; i
< hw
->mac
.max_queues
; i
++) {
428 struct fm10k_hw_stats_q
*q
= &interface
->stats
.q
[i
];
430 tx_bytes_nic
+= q
->tx_bytes
.count
;
431 tx_pkts_nic
+= q
->tx_packets
.count
;
432 rx_bytes_nic
+= q
->rx_bytes
.count
;
433 rx_pkts_nic
+= q
->rx_packets
.count
;
434 rx_drops_nic
+= q
->rx_drops
.count
;
437 interface
->tx_bytes_nic
= tx_bytes_nic
;
438 interface
->tx_packets_nic
= tx_pkts_nic
;
439 interface
->rx_bytes_nic
= rx_bytes_nic
;
440 interface
->rx_packets_nic
= rx_pkts_nic
;
441 interface
->rx_drops_nic
= rx_drops_nic
;
443 /* Fill out the OS statistics structure */
444 net_stats
->rx_errors
= rx_errors
;
445 net_stats
->rx_dropped
= interface
->stats
.nodesc_drop
.count
;
449 * fm10k_watchdog_flush_tx - flush queues on host not ready
450 * @interface - pointer to the device interface structure
452 static void fm10k_watchdog_flush_tx(struct fm10k_intfc
*interface
)
454 int some_tx_pending
= 0;
457 /* nothing to do if carrier is up */
458 if (netif_carrier_ok(interface
->netdev
))
461 for (i
= 0; i
< interface
->num_tx_queues
; i
++) {
462 struct fm10k_ring
*tx_ring
= interface
->tx_ring
[i
];
464 if (tx_ring
->next_to_use
!= tx_ring
->next_to_clean
) {
470 /* We've lost link, so the controller stops DMA, but we've got
471 * queued Tx work that's never going to get done, so reset
472 * controller to flush Tx.
475 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
479 * fm10k_watchdog_subtask - check and bring link up
480 * @interface - pointer to the device interface structure
482 static void fm10k_watchdog_subtask(struct fm10k_intfc
*interface
)
484 /* if interface is down do nothing */
485 if (test_bit(__FM10K_DOWN
, &interface
->state
) ||
486 test_bit(__FM10K_RESETTING
, &interface
->state
))
489 if (interface
->host_ready
)
490 fm10k_watchdog_host_is_ready(interface
);
492 fm10k_watchdog_host_not_ready(interface
);
494 /* update stats only once every second */
495 if (time_is_before_jiffies(interface
->next_stats_update
))
496 fm10k_update_stats(interface
);
498 /* flush any uncompleted work */
499 fm10k_watchdog_flush_tx(interface
);
503 * fm10k_check_hang_subtask - check for hung queues and dropped interrupts
504 * @interface - pointer to the device interface structure
506 * This function serves two purposes. First it strobes the interrupt lines
507 * in order to make certain interrupts are occurring. Secondly it sets the
508 * bits needed to check for TX hangs. As a result we should immediately
509 * determine if a hang has occurred.
511 static void fm10k_check_hang_subtask(struct fm10k_intfc
*interface
)
515 /* If we're down or resetting, just bail */
516 if (test_bit(__FM10K_DOWN
, &interface
->state
) ||
517 test_bit(__FM10K_RESETTING
, &interface
->state
))
520 /* rate limit tx hang checks to only once every 2 seconds */
521 if (time_is_after_eq_jiffies(interface
->next_tx_hang_check
))
523 interface
->next_tx_hang_check
= jiffies
+ (2 * HZ
);
525 if (netif_carrier_ok(interface
->netdev
)) {
526 /* Force detection of hung controller */
527 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
528 set_check_for_tx_hang(interface
->tx_ring
[i
]);
530 /* Rearm all in-use q_vectors for immediate firing */
531 for (i
= 0; i
< interface
->num_q_vectors
; i
++) {
532 struct fm10k_q_vector
*qv
= interface
->q_vector
[i
];
534 if (!qv
->tx
.count
&& !qv
->rx
.count
)
536 writel(FM10K_ITR_ENABLE
| FM10K_ITR_PENDING2
, qv
->itr
);
542 * fm10k_service_task - manages and runs subtasks
543 * @work: pointer to work_struct containing our data
545 static void fm10k_service_task(struct work_struct
*work
)
547 struct fm10k_intfc
*interface
;
549 interface
= container_of(work
, struct fm10k_intfc
, service_task
);
551 /* tasks run even when interface is down */
552 fm10k_mbx_subtask(interface
);
553 fm10k_detach_subtask(interface
);
554 fm10k_reset_subtask(interface
);
556 /* tasks only run when interface is up */
557 fm10k_watchdog_subtask(interface
);
558 fm10k_check_hang_subtask(interface
);
560 /* release lock on service events to allow scheduling next event */
561 fm10k_service_event_complete(interface
);
565 * fm10k_configure_tx_ring - Configure Tx ring after Reset
566 * @interface: board private structure
567 * @ring: structure containing ring specific data
569 * Configure the Tx descriptor ring after a reset.
571 static void fm10k_configure_tx_ring(struct fm10k_intfc
*interface
,
572 struct fm10k_ring
*ring
)
574 struct fm10k_hw
*hw
= &interface
->hw
;
575 u64 tdba
= ring
->dma
;
576 u32 size
= ring
->count
* sizeof(struct fm10k_tx_desc
);
577 u32 txint
= FM10K_INT_MAP_DISABLE
;
578 u32 txdctl
= BIT(FM10K_TXDCTL_MAX_TIME_SHIFT
) | FM10K_TXDCTL_ENABLE
;
579 u8 reg_idx
= ring
->reg_idx
;
581 /* disable queue to avoid issues while updating state */
582 fm10k_write_reg(hw
, FM10K_TXDCTL(reg_idx
), 0);
583 fm10k_write_flush(hw
);
585 /* possible poll here to verify ring resources have been cleaned */
587 /* set location and size for descriptor ring */
588 fm10k_write_reg(hw
, FM10K_TDBAL(reg_idx
), tdba
& DMA_BIT_MASK(32));
589 fm10k_write_reg(hw
, FM10K_TDBAH(reg_idx
), tdba
>> 32);
590 fm10k_write_reg(hw
, FM10K_TDLEN(reg_idx
), size
);
592 /* reset head and tail pointers */
593 fm10k_write_reg(hw
, FM10K_TDH(reg_idx
), 0);
594 fm10k_write_reg(hw
, FM10K_TDT(reg_idx
), 0);
596 /* store tail pointer */
597 ring
->tail
= &interface
->uc_addr
[FM10K_TDT(reg_idx
)];
599 /* reset ntu and ntc to place SW in sync with hardware */
600 ring
->next_to_clean
= 0;
601 ring
->next_to_use
= 0;
604 if (ring
->q_vector
) {
605 txint
= ring
->q_vector
->v_idx
+ NON_Q_VECTORS(hw
);
606 txint
|= FM10K_INT_MAP_TIMER0
;
609 fm10k_write_reg(hw
, FM10K_TXINT(reg_idx
), txint
);
611 /* enable use of FTAG bit in Tx descriptor, register is RO for VF */
612 fm10k_write_reg(hw
, FM10K_PFVTCTL(reg_idx
),
613 FM10K_PFVTCTL_FTAG_DESC_ENABLE
);
616 if (!test_and_set_bit(__FM10K_TX_XPS_INIT_DONE
, &ring
->state
) &&
618 netif_set_xps_queue(ring
->netdev
,
619 &ring
->q_vector
->affinity_mask
,
623 fm10k_write_reg(hw
, FM10K_TXDCTL(reg_idx
), txdctl
);
627 * fm10k_enable_tx_ring - Verify Tx ring is enabled after configuration
628 * @interface: board private structure
629 * @ring: structure containing ring specific data
631 * Verify the Tx descriptor ring is ready for transmit.
633 static void fm10k_enable_tx_ring(struct fm10k_intfc
*interface
,
634 struct fm10k_ring
*ring
)
636 struct fm10k_hw
*hw
= &interface
->hw
;
639 u8 reg_idx
= ring
->reg_idx
;
641 /* if we are already enabled just exit */
642 if (fm10k_read_reg(hw
, FM10K_TXDCTL(reg_idx
)) & FM10K_TXDCTL_ENABLE
)
645 /* poll to verify queue is enabled */
647 usleep_range(1000, 2000);
648 txdctl
= fm10k_read_reg(hw
, FM10K_TXDCTL(reg_idx
));
649 } while (!(txdctl
& FM10K_TXDCTL_ENABLE
) && --wait_loop
);
651 netif_err(interface
, drv
, interface
->netdev
,
652 "Could not enable Tx Queue %d\n", reg_idx
);
656 * fm10k_configure_tx - Configure Transmit Unit after Reset
657 * @interface: board private structure
659 * Configure the Tx unit of the MAC after a reset.
661 static void fm10k_configure_tx(struct fm10k_intfc
*interface
)
665 /* Setup the HW Tx Head and Tail descriptor pointers */
666 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
667 fm10k_configure_tx_ring(interface
, interface
->tx_ring
[i
]);
669 /* poll here to verify that Tx rings are now enabled */
670 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
671 fm10k_enable_tx_ring(interface
, interface
->tx_ring
[i
]);
675 * fm10k_configure_rx_ring - Configure Rx ring after Reset
676 * @interface: board private structure
677 * @ring: structure containing ring specific data
679 * Configure the Rx descriptor ring after a reset.
681 static void fm10k_configure_rx_ring(struct fm10k_intfc
*interface
,
682 struct fm10k_ring
*ring
)
684 u64 rdba
= ring
->dma
;
685 struct fm10k_hw
*hw
= &interface
->hw
;
686 u32 size
= ring
->count
* sizeof(union fm10k_rx_desc
);
687 u32 rxqctl
= FM10K_RXQCTL_ENABLE
| FM10K_RXQCTL_PF
;
688 u32 rxdctl
= FM10K_RXDCTL_WRITE_BACK_MIN_DELAY
;
689 u32 srrctl
= FM10K_SRRCTL_BUFFER_CHAINING_EN
;
690 u32 rxint
= FM10K_INT_MAP_DISABLE
;
691 u8 rx_pause
= interface
->rx_pause
;
692 u8 reg_idx
= ring
->reg_idx
;
694 /* disable queue to avoid issues while updating state */
695 fm10k_write_reg(hw
, FM10K_RXQCTL(reg_idx
), 0);
696 fm10k_write_flush(hw
);
698 /* possible poll here to verify ring resources have been cleaned */
700 /* set location and size for descriptor ring */
701 fm10k_write_reg(hw
, FM10K_RDBAL(reg_idx
), rdba
& DMA_BIT_MASK(32));
702 fm10k_write_reg(hw
, FM10K_RDBAH(reg_idx
), rdba
>> 32);
703 fm10k_write_reg(hw
, FM10K_RDLEN(reg_idx
), size
);
705 /* reset head and tail pointers */
706 fm10k_write_reg(hw
, FM10K_RDH(reg_idx
), 0);
707 fm10k_write_reg(hw
, FM10K_RDT(reg_idx
), 0);
709 /* store tail pointer */
710 ring
->tail
= &interface
->uc_addr
[FM10K_RDT(reg_idx
)];
712 /* reset ntu and ntc to place SW in sync with hardware */
713 ring
->next_to_clean
= 0;
714 ring
->next_to_use
= 0;
715 ring
->next_to_alloc
= 0;
717 /* Configure the Rx buffer size for one buff without split */
718 srrctl
|= FM10K_RX_BUFSZ
>> FM10K_SRRCTL_BSIZEPKT_SHIFT
;
720 /* Configure the Rx ring to suppress loopback packets */
721 srrctl
|= FM10K_SRRCTL_LOOPBACK_SUPPRESS
;
722 fm10k_write_reg(hw
, FM10K_SRRCTL(reg_idx
), srrctl
);
724 /* Enable drop on empty */
726 if (interface
->pfc_en
)
727 rx_pause
= interface
->pfc_en
;
729 if (!(rx_pause
& BIT(ring
->qos_pc
)))
730 rxdctl
|= FM10K_RXDCTL_DROP_ON_EMPTY
;
732 fm10k_write_reg(hw
, FM10K_RXDCTL(reg_idx
), rxdctl
);
734 /* assign default VLAN to queue */
735 ring
->vid
= hw
->mac
.default_vid
;
737 /* if we have an active VLAN, disable default VLAN ID */
738 if (test_bit(hw
->mac
.default_vid
, interface
->active_vlans
))
739 ring
->vid
|= FM10K_VLAN_CLEAR
;
742 if (ring
->q_vector
) {
743 rxint
= ring
->q_vector
->v_idx
+ NON_Q_VECTORS(hw
);
744 rxint
|= FM10K_INT_MAP_TIMER1
;
747 fm10k_write_reg(hw
, FM10K_RXINT(reg_idx
), rxint
);
750 fm10k_write_reg(hw
, FM10K_RXQCTL(reg_idx
), rxqctl
);
752 /* place buffers on ring for receive data */
753 fm10k_alloc_rx_buffers(ring
, fm10k_desc_unused(ring
));
757 * fm10k_update_rx_drop_en - Configures the drop enable bits for Rx rings
758 * @interface: board private structure
760 * Configure the drop enable bits for the Rx rings.
762 void fm10k_update_rx_drop_en(struct fm10k_intfc
*interface
)
764 struct fm10k_hw
*hw
= &interface
->hw
;
765 u8 rx_pause
= interface
->rx_pause
;
769 if (interface
->pfc_en
)
770 rx_pause
= interface
->pfc_en
;
773 for (i
= 0; i
< interface
->num_rx_queues
; i
++) {
774 struct fm10k_ring
*ring
= interface
->rx_ring
[i
];
775 u32 rxdctl
= FM10K_RXDCTL_WRITE_BACK_MIN_DELAY
;
776 u8 reg_idx
= ring
->reg_idx
;
778 if (!(rx_pause
& BIT(ring
->qos_pc
)))
779 rxdctl
|= FM10K_RXDCTL_DROP_ON_EMPTY
;
781 fm10k_write_reg(hw
, FM10K_RXDCTL(reg_idx
), rxdctl
);
786 * fm10k_configure_dglort - Configure Receive DGLORT after reset
787 * @interface: board private structure
789 * Configure the DGLORT description and RSS tables.
791 static void fm10k_configure_dglort(struct fm10k_intfc
*interface
)
793 struct fm10k_dglort_cfg dglort
= { 0 };
794 struct fm10k_hw
*hw
= &interface
->hw
;
798 /* Fill out hash function seeds */
799 for (i
= 0; i
< FM10K_RSSRK_SIZE
; i
++)
800 fm10k_write_reg(hw
, FM10K_RSSRK(0, i
), interface
->rssrk
[i
]);
802 /* Write RETA table to hardware */
803 for (i
= 0; i
< FM10K_RETA_SIZE
; i
++)
804 fm10k_write_reg(hw
, FM10K_RETA(0, i
), interface
->reta
[i
]);
806 /* Generate RSS hash based on packet types, TCP/UDP
807 * port numbers and/or IPv4/v6 src and dst addresses
809 mrqc
= FM10K_MRQC_IPV4
|
810 FM10K_MRQC_TCP_IPV4
|
814 if (interface
->flags
& FM10K_FLAG_RSS_FIELD_IPV4_UDP
)
815 mrqc
|= FM10K_MRQC_UDP_IPV4
;
816 if (interface
->flags
& FM10K_FLAG_RSS_FIELD_IPV6_UDP
)
817 mrqc
|= FM10K_MRQC_UDP_IPV6
;
819 fm10k_write_reg(hw
, FM10K_MRQC(0), mrqc
);
821 /* configure default DGLORT mapping for RSS/DCB */
822 dglort
.inner_rss
= 1;
823 dglort
.rss_l
= fls(interface
->ring_feature
[RING_F_RSS
].mask
);
824 dglort
.pc_l
= fls(interface
->ring_feature
[RING_F_QOS
].mask
);
825 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
827 /* assign GLORT per queue for queue mapped testing */
828 if (interface
->glort_count
> 64) {
829 memset(&dglort
, 0, sizeof(dglort
));
830 dglort
.inner_rss
= 1;
831 dglort
.glort
= interface
->glort
+ 64;
832 dglort
.idx
= fm10k_dglort_pf_queue
;
833 dglort
.queue_l
= fls(interface
->num_rx_queues
- 1);
834 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
837 /* assign glort value for RSS/DCB specific to this interface */
838 memset(&dglort
, 0, sizeof(dglort
));
839 dglort
.inner_rss
= 1;
840 dglort
.glort
= interface
->glort
;
841 dglort
.rss_l
= fls(interface
->ring_feature
[RING_F_RSS
].mask
);
842 dglort
.pc_l
= fls(interface
->ring_feature
[RING_F_QOS
].mask
);
843 /* configure DGLORT mapping for RSS/DCB */
844 dglort
.idx
= fm10k_dglort_pf_rss
;
845 if (interface
->l2_accel
)
846 dglort
.shared_l
= fls(interface
->l2_accel
->size
);
847 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
851 * fm10k_configure_rx - Configure Receive Unit after Reset
852 * @interface: board private structure
854 * Configure the Rx unit of the MAC after a reset.
856 static void fm10k_configure_rx(struct fm10k_intfc
*interface
)
860 /* Configure SWPRI to PC map */
861 fm10k_configure_swpri_map(interface
);
863 /* Configure RSS and DGLORT map */
864 fm10k_configure_dglort(interface
);
866 /* Setup the HW Rx Head and Tail descriptor pointers */
867 for (i
= 0; i
< interface
->num_rx_queues
; i
++)
868 fm10k_configure_rx_ring(interface
, interface
->rx_ring
[i
]);
870 /* possible poll here to verify that Rx rings are now enabled */
873 static void fm10k_napi_enable_all(struct fm10k_intfc
*interface
)
875 struct fm10k_q_vector
*q_vector
;
878 for (q_idx
= 0; q_idx
< interface
->num_q_vectors
; q_idx
++) {
879 q_vector
= interface
->q_vector
[q_idx
];
880 napi_enable(&q_vector
->napi
);
884 static irqreturn_t
fm10k_msix_clean_rings(int __always_unused irq
, void *data
)
886 struct fm10k_q_vector
*q_vector
= data
;
888 if (q_vector
->rx
.count
|| q_vector
->tx
.count
)
889 napi_schedule_irqoff(&q_vector
->napi
);
894 static irqreturn_t
fm10k_msix_mbx_vf(int __always_unused irq
, void *data
)
896 struct fm10k_intfc
*interface
= data
;
897 struct fm10k_hw
*hw
= &interface
->hw
;
898 struct fm10k_mbx_info
*mbx
= &hw
->mbx
;
900 /* re-enable mailbox interrupt and indicate 20us delay */
901 fm10k_write_reg(hw
, FM10K_VFITR(FM10K_MBX_VECTOR
),
902 (FM10K_MBX_INT_DELAY
>> hw
->mac
.itr_scale
) |
905 /* service upstream mailbox */
906 if (fm10k_mbx_trylock(interface
)) {
907 mbx
->ops
.process(hw
, mbx
);
908 fm10k_mbx_unlock(interface
);
911 hw
->mac
.get_host_state
= true;
912 fm10k_service_event_schedule(interface
);
917 #ifdef CONFIG_NET_POLL_CONTROLLER
919 * fm10k_netpoll - A Polling 'interrupt' handler
920 * @netdev: network interface device structure
922 * This is used by netconsole to send skbs without having to re-enable
923 * interrupts. It's not called while the normal interrupt routine is executing.
925 void fm10k_netpoll(struct net_device
*netdev
)
927 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
930 /* if interface is down do nothing */
931 if (test_bit(__FM10K_DOWN
, &interface
->state
))
934 for (i
= 0; i
< interface
->num_q_vectors
; i
++)
935 fm10k_msix_clean_rings(0, interface
->q_vector
[i
]);
939 #define FM10K_ERR_MSG(type) case (type): error = #type; break
940 static void fm10k_handle_fault(struct fm10k_intfc
*interface
, int type
,
941 struct fm10k_fault
*fault
)
943 struct pci_dev
*pdev
= interface
->pdev
;
944 struct fm10k_hw
*hw
= &interface
->hw
;
945 struct fm10k_iov_data
*iov_data
= interface
->iov_data
;
949 case FM10K_PCA_FAULT
:
950 switch (fault
->type
) {
952 error
= "Unknown PCA error";
954 FM10K_ERR_MSG(PCA_NO_FAULT
);
955 FM10K_ERR_MSG(PCA_UNMAPPED_ADDR
);
956 FM10K_ERR_MSG(PCA_BAD_QACCESS_PF
);
957 FM10K_ERR_MSG(PCA_BAD_QACCESS_VF
);
958 FM10K_ERR_MSG(PCA_MALICIOUS_REQ
);
959 FM10K_ERR_MSG(PCA_POISONED_TLP
);
960 FM10K_ERR_MSG(PCA_TLP_ABORT
);
963 case FM10K_THI_FAULT
:
964 switch (fault
->type
) {
966 error
= "Unknown THI error";
968 FM10K_ERR_MSG(THI_NO_FAULT
);
969 FM10K_ERR_MSG(THI_MAL_DIS_Q_FAULT
);
972 case FM10K_FUM_FAULT
:
973 switch (fault
->type
) {
975 error
= "Unknown FUM error";
977 FM10K_ERR_MSG(FUM_NO_FAULT
);
978 FM10K_ERR_MSG(FUM_UNMAPPED_ADDR
);
979 FM10K_ERR_MSG(FUM_BAD_VF_QACCESS
);
980 FM10K_ERR_MSG(FUM_ADD_DECODE_ERR
);
981 FM10K_ERR_MSG(FUM_RO_ERROR
);
982 FM10K_ERR_MSG(FUM_QPRC_CRC_ERROR
);
983 FM10K_ERR_MSG(FUM_CSR_TIMEOUT
);
984 FM10K_ERR_MSG(FUM_INVALID_TYPE
);
985 FM10K_ERR_MSG(FUM_INVALID_LENGTH
);
986 FM10K_ERR_MSG(FUM_INVALID_BE
);
987 FM10K_ERR_MSG(FUM_INVALID_ALIGN
);
991 error
= "Undocumented fault";
996 "%s Address: 0x%llx SpecInfo: 0x%x Func: %02x.%0x\n",
997 error
, fault
->address
, fault
->specinfo
,
998 PCI_SLOT(fault
->func
), PCI_FUNC(fault
->func
));
1000 /* For VF faults, clear out the respective LPORT, reset the queue
1001 * resources, and then reconnect to the mailbox. This allows the
1002 * VF in question to resume behavior. For transient faults that are
1003 * the result of non-malicious behavior this will log the fault and
1004 * allow the VF to resume functionality. Obviously for malicious VFs
1005 * they will be able to attempt malicious behavior again. In this
1006 * case, the system administrator will need to step in and manually
1007 * remove or disable the VF in question.
1009 if (fault
->func
&& iov_data
) {
1010 int vf
= fault
->func
- 1;
1011 struct fm10k_vf_info
*vf_info
= &iov_data
->vf_info
[vf
];
1013 hw
->iov
.ops
.reset_lport(hw
, vf_info
);
1014 hw
->iov
.ops
.reset_resources(hw
, vf_info
);
1016 /* reset_lport disables the VF, so re-enable it */
1017 hw
->iov
.ops
.set_lport(hw
, vf_info
, vf
,
1018 FM10K_VF_FLAG_MULTI_CAPABLE
);
1020 /* reset_resources will disconnect from the mbx */
1021 vf_info
->mbx
.ops
.connect(hw
, &vf_info
->mbx
);
1025 static void fm10k_report_fault(struct fm10k_intfc
*interface
, u32 eicr
)
1027 struct fm10k_hw
*hw
= &interface
->hw
;
1028 struct fm10k_fault fault
= { 0 };
1031 for (eicr
&= FM10K_EICR_FAULT_MASK
, type
= FM10K_PCA_FAULT
;
1033 eicr
>>= 1, type
+= FM10K_FAULT_SIZE
) {
1034 /* only check if there is an error reported */
1038 /* retrieve fault info */
1039 err
= hw
->mac
.ops
.get_fault(hw
, type
, &fault
);
1041 dev_err(&interface
->pdev
->dev
,
1042 "error reading fault\n");
1046 fm10k_handle_fault(interface
, type
, &fault
);
1050 static void fm10k_reset_drop_on_empty(struct fm10k_intfc
*interface
, u32 eicr
)
1052 struct fm10k_hw
*hw
= &interface
->hw
;
1053 const u32 rxdctl
= FM10K_RXDCTL_WRITE_BACK_MIN_DELAY
;
1057 if (!(eicr
& FM10K_EICR_MAXHOLDTIME
))
1060 maxholdq
= fm10k_read_reg(hw
, FM10K_MAXHOLDQ(7));
1062 fm10k_write_reg(hw
, FM10K_MAXHOLDQ(7), maxholdq
);
1064 if (maxholdq
& BIT(31)) {
1065 if (q
< FM10K_MAX_QUEUES_PF
) {
1066 interface
->rx_overrun_pf
++;
1067 fm10k_write_reg(hw
, FM10K_RXDCTL(q
), rxdctl
);
1069 interface
->rx_overrun_vf
++;
1083 maxholdq
= fm10k_read_reg(hw
, FM10K_MAXHOLDQ(q
/ 32));
1085 fm10k_write_reg(hw
, FM10K_MAXHOLDQ(q
/ 32), maxholdq
);
1089 static irqreturn_t
fm10k_msix_mbx_pf(int __always_unused irq
, void *data
)
1091 struct fm10k_intfc
*interface
= data
;
1092 struct fm10k_hw
*hw
= &interface
->hw
;
1093 struct fm10k_mbx_info
*mbx
= &hw
->mbx
;
1096 /* unmask any set bits related to this interrupt */
1097 eicr
= fm10k_read_reg(hw
, FM10K_EICR
);
1098 fm10k_write_reg(hw
, FM10K_EICR
, eicr
& (FM10K_EICR_MAILBOX
|
1099 FM10K_EICR_SWITCHREADY
|
1100 FM10K_EICR_SWITCHNOTREADY
));
1102 /* report any faults found to the message log */
1103 fm10k_report_fault(interface
, eicr
);
1105 /* reset any queues disabled due to receiver overrun */
1106 fm10k_reset_drop_on_empty(interface
, eicr
);
1108 /* service mailboxes */
1109 if (fm10k_mbx_trylock(interface
)) {
1110 mbx
->ops
.process(hw
, mbx
);
1111 /* handle VFLRE events */
1112 fm10k_iov_event(interface
);
1113 fm10k_mbx_unlock(interface
);
1116 /* if switch toggled state we should reset GLORTs */
1117 if (eicr
& FM10K_EICR_SWITCHNOTREADY
) {
1118 /* force link down for at least 4 seconds */
1119 interface
->link_down_event
= jiffies
+ (4 * HZ
);
1120 set_bit(__FM10K_LINK_DOWN
, &interface
->state
);
1122 /* reset dglort_map back to no config */
1123 hw
->mac
.dglort_map
= FM10K_DGLORTMAP_NONE
;
1126 /* we should validate host state after interrupt event */
1127 hw
->mac
.get_host_state
= true;
1129 /* validate host state, and handle VF mailboxes in the service task */
1130 fm10k_service_event_schedule(interface
);
1132 /* re-enable mailbox interrupt and indicate 20us delay */
1133 fm10k_write_reg(hw
, FM10K_ITR(FM10K_MBX_VECTOR
),
1134 (FM10K_MBX_INT_DELAY
>> hw
->mac
.itr_scale
) |
1140 void fm10k_mbx_free_irq(struct fm10k_intfc
*interface
)
1142 struct fm10k_hw
*hw
= &interface
->hw
;
1143 struct msix_entry
*entry
;
1146 /* no mailbox IRQ to free if MSI-X is not enabled */
1147 if (!interface
->msix_entries
)
1150 entry
= &interface
->msix_entries
[FM10K_MBX_VECTOR
];
1152 /* disconnect the mailbox */
1153 hw
->mbx
.ops
.disconnect(hw
, &hw
->mbx
);
1155 /* disable Mailbox cause */
1156 if (hw
->mac
.type
== fm10k_mac_pf
) {
1157 fm10k_write_reg(hw
, FM10K_EIMR
,
1158 FM10K_EIMR_DISABLE(PCA_FAULT
) |
1159 FM10K_EIMR_DISABLE(FUM_FAULT
) |
1160 FM10K_EIMR_DISABLE(MAILBOX
) |
1161 FM10K_EIMR_DISABLE(SWITCHREADY
) |
1162 FM10K_EIMR_DISABLE(SWITCHNOTREADY
) |
1163 FM10K_EIMR_DISABLE(SRAMERROR
) |
1164 FM10K_EIMR_DISABLE(VFLR
) |
1165 FM10K_EIMR_DISABLE(MAXHOLDTIME
));
1166 itr_reg
= FM10K_ITR(FM10K_MBX_VECTOR
);
1168 itr_reg
= FM10K_VFITR(FM10K_MBX_VECTOR
);
1171 fm10k_write_reg(hw
, itr_reg
, FM10K_ITR_MASK_SET
);
1173 free_irq(entry
->vector
, interface
);
1176 static s32
fm10k_mbx_mac_addr(struct fm10k_hw
*hw
, u32
**results
,
1177 struct fm10k_mbx_info
*mbx
)
1179 bool vlan_override
= hw
->mac
.vlan_override
;
1180 u16 default_vid
= hw
->mac
.default_vid
;
1181 struct fm10k_intfc
*interface
;
1184 err
= fm10k_msg_mac_vlan_vf(hw
, results
, mbx
);
1188 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1190 /* MAC was changed so we need reset */
1191 if (is_valid_ether_addr(hw
->mac
.perm_addr
) &&
1192 !ether_addr_equal(hw
->mac
.perm_addr
, hw
->mac
.addr
))
1193 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1195 /* VLAN override was changed, or default VLAN changed */
1196 if ((vlan_override
!= hw
->mac
.vlan_override
) ||
1197 (default_vid
!= hw
->mac
.default_vid
))
1198 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1203 /* generic error handler for mailbox issues */
1204 static s32
fm10k_mbx_error(struct fm10k_hw
*hw
, u32
**results
,
1205 struct fm10k_mbx_info __always_unused
*mbx
)
1207 struct fm10k_intfc
*interface
;
1208 struct pci_dev
*pdev
;
1210 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1211 pdev
= interface
->pdev
;
1213 dev_err(&pdev
->dev
, "Unknown message ID %u\n",
1214 **results
& FM10K_TLV_ID_MASK
);
1219 static const struct fm10k_msg_data vf_mbx_data
[] = {
1220 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test
),
1221 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_mbx_mac_addr
),
1222 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf
),
1223 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error
),
1226 static int fm10k_mbx_request_irq_vf(struct fm10k_intfc
*interface
)
1228 struct msix_entry
*entry
= &interface
->msix_entries
[FM10K_MBX_VECTOR
];
1229 struct net_device
*dev
= interface
->netdev
;
1230 struct fm10k_hw
*hw
= &interface
->hw
;
1233 /* Use timer0 for interrupt moderation on the mailbox */
1234 u32 itr
= entry
->entry
| FM10K_INT_MAP_TIMER0
;
1236 /* register mailbox handlers */
1237 err
= hw
->mbx
.ops
.register_handlers(&hw
->mbx
, vf_mbx_data
);
1241 /* request the IRQ */
1242 err
= request_irq(entry
->vector
, fm10k_msix_mbx_vf
, 0,
1243 dev
->name
, interface
);
1245 netif_err(interface
, probe
, dev
,
1246 "request_irq for msix_mbx failed: %d\n", err
);
1250 /* map all of the interrupt sources */
1251 fm10k_write_reg(hw
, FM10K_VFINT_MAP
, itr
);
1253 /* enable interrupt */
1254 fm10k_write_reg(hw
, FM10K_VFITR(entry
->entry
), FM10K_ITR_ENABLE
);
1259 static s32
fm10k_lport_map(struct fm10k_hw
*hw
, u32
**results
,
1260 struct fm10k_mbx_info
*mbx
)
1262 struct fm10k_intfc
*interface
;
1263 u32 dglort_map
= hw
->mac
.dglort_map
;
1266 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1268 err
= fm10k_msg_err_pf(hw
, results
, mbx
);
1269 if (!err
&& hw
->swapi
.status
) {
1270 /* force link down for a reasonable delay */
1271 interface
->link_down_event
= jiffies
+ (2 * HZ
);
1272 set_bit(__FM10K_LINK_DOWN
, &interface
->state
);
1274 /* reset dglort_map back to no config */
1275 hw
->mac
.dglort_map
= FM10K_DGLORTMAP_NONE
;
1277 fm10k_service_event_schedule(interface
);
1279 /* prevent overloading kernel message buffer */
1280 if (interface
->lport_map_failed
)
1283 interface
->lport_map_failed
= true;
1285 if (hw
->swapi
.status
== FM10K_MSG_ERR_PEP_NOT_SCHEDULED
)
1286 dev_warn(&interface
->pdev
->dev
,
1287 "cannot obtain link because the host interface is configured for a PCIe host interface bandwidth of zero\n");
1288 dev_warn(&interface
->pdev
->dev
,
1289 "request logical port map failed: %d\n",
1295 err
= fm10k_msg_lport_map_pf(hw
, results
, mbx
);
1299 interface
->lport_map_failed
= false;
1301 /* we need to reset if port count was just updated */
1302 if (dglort_map
!= hw
->mac
.dglort_map
)
1303 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1308 static s32
fm10k_update_pvid(struct fm10k_hw
*hw
, u32
**results
,
1309 struct fm10k_mbx_info __always_unused
*mbx
)
1311 struct fm10k_intfc
*interface
;
1316 err
= fm10k_tlv_attr_get_u32(results
[FM10K_PF_ATTR_ID_UPDATE_PVID
],
1321 /* extract values from the pvid update */
1322 glort
= FM10K_MSG_HDR_FIELD_GET(pvid_update
, UPDATE_PVID_GLORT
);
1323 pvid
= FM10K_MSG_HDR_FIELD_GET(pvid_update
, UPDATE_PVID_PVID
);
1325 /* if glort is not valid return error */
1326 if (!fm10k_glort_valid_pf(hw
, glort
))
1327 return FM10K_ERR_PARAM
;
1329 /* verify VLAN ID is valid */
1330 if (pvid
>= FM10K_VLAN_TABLE_VID_MAX
)
1331 return FM10K_ERR_PARAM
;
1333 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1335 /* check to see if this belongs to one of the VFs */
1336 err
= fm10k_iov_update_pvid(interface
, glort
, pvid
);
1340 /* we need to reset if default VLAN was just updated */
1341 if (pvid
!= hw
->mac
.default_vid
)
1342 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1344 hw
->mac
.default_vid
= pvid
;
1349 static const struct fm10k_msg_data pf_mbx_data
[] = {
1350 FM10K_PF_MSG_ERR_HANDLER(XCAST_MODES
, fm10k_msg_err_pf
),
1351 FM10K_PF_MSG_ERR_HANDLER(UPDATE_MAC_FWD_RULE
, fm10k_msg_err_pf
),
1352 FM10K_PF_MSG_LPORT_MAP_HANDLER(fm10k_lport_map
),
1353 FM10K_PF_MSG_ERR_HANDLER(LPORT_CREATE
, fm10k_msg_err_pf
),
1354 FM10K_PF_MSG_ERR_HANDLER(LPORT_DELETE
, fm10k_msg_err_pf
),
1355 FM10K_PF_MSG_UPDATE_PVID_HANDLER(fm10k_update_pvid
),
1356 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error
),
1359 static int fm10k_mbx_request_irq_pf(struct fm10k_intfc
*interface
)
1361 struct msix_entry
*entry
= &interface
->msix_entries
[FM10K_MBX_VECTOR
];
1362 struct net_device
*dev
= interface
->netdev
;
1363 struct fm10k_hw
*hw
= &interface
->hw
;
1366 /* Use timer0 for interrupt moderation on the mailbox */
1367 u32 mbx_itr
= entry
->entry
| FM10K_INT_MAP_TIMER0
;
1368 u32 other_itr
= entry
->entry
| FM10K_INT_MAP_IMMEDIATE
;
1370 /* register mailbox handlers */
1371 err
= hw
->mbx
.ops
.register_handlers(&hw
->mbx
, pf_mbx_data
);
1375 /* request the IRQ */
1376 err
= request_irq(entry
->vector
, fm10k_msix_mbx_pf
, 0,
1377 dev
->name
, interface
);
1379 netif_err(interface
, probe
, dev
,
1380 "request_irq for msix_mbx failed: %d\n", err
);
1384 /* Enable interrupts w/ no moderation for "other" interrupts */
1385 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_pcie_fault
), other_itr
);
1386 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_switch_up_down
), other_itr
);
1387 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_sram
), other_itr
);
1388 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_max_hold_time
), other_itr
);
1389 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_vflr
), other_itr
);
1391 /* Enable interrupts w/ moderation for mailbox */
1392 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_mailbox
), mbx_itr
);
1394 /* Enable individual interrupt causes */
1395 fm10k_write_reg(hw
, FM10K_EIMR
, FM10K_EIMR_ENABLE(PCA_FAULT
) |
1396 FM10K_EIMR_ENABLE(FUM_FAULT
) |
1397 FM10K_EIMR_ENABLE(MAILBOX
) |
1398 FM10K_EIMR_ENABLE(SWITCHREADY
) |
1399 FM10K_EIMR_ENABLE(SWITCHNOTREADY
) |
1400 FM10K_EIMR_ENABLE(SRAMERROR
) |
1401 FM10K_EIMR_ENABLE(VFLR
) |
1402 FM10K_EIMR_ENABLE(MAXHOLDTIME
));
1404 /* enable interrupt */
1405 fm10k_write_reg(hw
, FM10K_ITR(entry
->entry
), FM10K_ITR_ENABLE
);
1410 int fm10k_mbx_request_irq(struct fm10k_intfc
*interface
)
1412 struct fm10k_hw
*hw
= &interface
->hw
;
1415 /* enable Mailbox cause */
1416 if (hw
->mac
.type
== fm10k_mac_pf
)
1417 err
= fm10k_mbx_request_irq_pf(interface
);
1419 err
= fm10k_mbx_request_irq_vf(interface
);
1423 /* connect mailbox */
1424 err
= hw
->mbx
.ops
.connect(hw
, &hw
->mbx
);
1426 /* if the mailbox failed to connect, then free IRQ */
1428 fm10k_mbx_free_irq(interface
);
1434 * fm10k_qv_free_irq - release interrupts associated with queue vectors
1435 * @interface: board private structure
1437 * Release all interrupts associated with this interface
1439 void fm10k_qv_free_irq(struct fm10k_intfc
*interface
)
1441 int vector
= interface
->num_q_vectors
;
1442 struct fm10k_hw
*hw
= &interface
->hw
;
1443 struct msix_entry
*entry
;
1445 entry
= &interface
->msix_entries
[NON_Q_VECTORS(hw
) + vector
];
1448 struct fm10k_q_vector
*q_vector
;
1452 q_vector
= interface
->q_vector
[vector
];
1454 if (!q_vector
->tx
.count
&& !q_vector
->rx
.count
)
1457 /* clear the affinity_mask in the IRQ descriptor */
1458 irq_set_affinity_hint(entry
->vector
, NULL
);
1460 /* disable interrupts */
1461 writel(FM10K_ITR_MASK_SET
, q_vector
->itr
);
1463 free_irq(entry
->vector
, q_vector
);
1468 * fm10k_qv_request_irq - initialize interrupts for queue vectors
1469 * @interface: board private structure
1471 * Attempts to configure interrupts using the best available
1472 * capabilities of the hardware and kernel.
1474 int fm10k_qv_request_irq(struct fm10k_intfc
*interface
)
1476 struct net_device
*dev
= interface
->netdev
;
1477 struct fm10k_hw
*hw
= &interface
->hw
;
1478 struct msix_entry
*entry
;
1482 entry
= &interface
->msix_entries
[NON_Q_VECTORS(hw
)];
1484 for (vector
= 0; vector
< interface
->num_q_vectors
; vector
++) {
1485 struct fm10k_q_vector
*q_vector
= interface
->q_vector
[vector
];
1487 /* name the vector */
1488 if (q_vector
->tx
.count
&& q_vector
->rx
.count
) {
1489 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1490 "%s-TxRx-%d", dev
->name
, ri
++);
1492 } else if (q_vector
->rx
.count
) {
1493 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1494 "%s-rx-%d", dev
->name
, ri
++);
1495 } else if (q_vector
->tx
.count
) {
1496 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1497 "%s-tx-%d", dev
->name
, ti
++);
1499 /* skip this unused q_vector */
1503 /* Assign ITR register to q_vector */
1504 q_vector
->itr
= (hw
->mac
.type
== fm10k_mac_pf
) ?
1505 &interface
->uc_addr
[FM10K_ITR(entry
->entry
)] :
1506 &interface
->uc_addr
[FM10K_VFITR(entry
->entry
)];
1508 /* request the IRQ */
1509 err
= request_irq(entry
->vector
, &fm10k_msix_clean_rings
, 0,
1510 q_vector
->name
, q_vector
);
1512 netif_err(interface
, probe
, dev
,
1513 "request_irq failed for MSIX interrupt Error: %d\n",
1518 /* assign the mask for this irq */
1519 irq_set_affinity_hint(entry
->vector
, &q_vector
->affinity_mask
);
1521 /* Enable q_vector */
1522 writel(FM10K_ITR_ENABLE
, q_vector
->itr
);
1530 /* wind through the ring freeing all entries and vectors */
1532 struct fm10k_q_vector
*q_vector
;
1536 q_vector
= interface
->q_vector
[vector
];
1538 if (!q_vector
->tx
.count
&& !q_vector
->rx
.count
)
1541 /* clear the affinity_mask in the IRQ descriptor */
1542 irq_set_affinity_hint(entry
->vector
, NULL
);
1544 /* disable interrupts */
1545 writel(FM10K_ITR_MASK_SET
, q_vector
->itr
);
1547 free_irq(entry
->vector
, q_vector
);
1553 void fm10k_up(struct fm10k_intfc
*interface
)
1555 struct fm10k_hw
*hw
= &interface
->hw
;
1557 /* Enable Tx/Rx DMA */
1558 hw
->mac
.ops
.start_hw(hw
);
1560 /* configure Tx descriptor rings */
1561 fm10k_configure_tx(interface
);
1563 /* configure Rx descriptor rings */
1564 fm10k_configure_rx(interface
);
1566 /* configure interrupts */
1567 hw
->mac
.ops
.update_int_moderator(hw
);
1569 /* clear down bit to indicate we are ready to go */
1570 clear_bit(__FM10K_DOWN
, &interface
->state
);
1572 /* enable polling cleanups */
1573 fm10k_napi_enable_all(interface
);
1575 /* re-establish Rx filters */
1576 fm10k_restore_rx_state(interface
);
1578 /* enable transmits */
1579 netif_tx_start_all_queues(interface
->netdev
);
1581 /* kick off the service timer now */
1582 hw
->mac
.get_host_state
= true;
1583 mod_timer(&interface
->service_timer
, jiffies
);
1586 static void fm10k_napi_disable_all(struct fm10k_intfc
*interface
)
1588 struct fm10k_q_vector
*q_vector
;
1591 for (q_idx
= 0; q_idx
< interface
->num_q_vectors
; q_idx
++) {
1592 q_vector
= interface
->q_vector
[q_idx
];
1593 napi_disable(&q_vector
->napi
);
1597 void fm10k_down(struct fm10k_intfc
*interface
)
1599 struct net_device
*netdev
= interface
->netdev
;
1600 struct fm10k_hw
*hw
= &interface
->hw
;
1603 /* signal that we are down to the interrupt handler and service task */
1604 set_bit(__FM10K_DOWN
, &interface
->state
);
1606 /* call carrier off first to avoid false dev_watchdog timeouts */
1607 netif_carrier_off(netdev
);
1609 /* disable transmits */
1610 netif_tx_stop_all_queues(netdev
);
1611 netif_tx_disable(netdev
);
1613 /* reset Rx filters */
1614 fm10k_reset_rx_state(interface
);
1616 /* allow 10ms for device to quiesce */
1617 usleep_range(10000, 20000);
1619 /* disable polling routines */
1620 fm10k_napi_disable_all(interface
);
1622 /* capture stats one last time before stopping interface */
1623 fm10k_update_stats(interface
);
1625 /* Disable DMA engine for Tx/Rx */
1626 err
= hw
->mac
.ops
.stop_hw(hw
);
1628 dev_err(&interface
->pdev
->dev
, "stop_hw failed: %d\n", err
);
1630 /* free any buffers still on the rings */
1631 fm10k_clean_all_tx_rings(interface
);
1632 fm10k_clean_all_rx_rings(interface
);
1636 * fm10k_sw_init - Initialize general software structures
1637 * @interface: host interface private structure to initialize
1639 * fm10k_sw_init initializes the interface private data structure.
1640 * Fields are initialized based on PCI device information and
1641 * OS network device settings (MTU size).
1643 static int fm10k_sw_init(struct fm10k_intfc
*interface
,
1644 const struct pci_device_id
*ent
)
1646 const struct fm10k_info
*fi
= fm10k_info_tbl
[ent
->driver_data
];
1647 struct fm10k_hw
*hw
= &interface
->hw
;
1648 struct pci_dev
*pdev
= interface
->pdev
;
1649 struct net_device
*netdev
= interface
->netdev
;
1650 u32 rss_key
[FM10K_RSSRK_SIZE
];
1654 /* initialize back pointer */
1655 hw
->back
= interface
;
1656 hw
->hw_addr
= interface
->uc_addr
;
1658 /* PCI config space info */
1659 hw
->vendor_id
= pdev
->vendor
;
1660 hw
->device_id
= pdev
->device
;
1661 hw
->revision_id
= pdev
->revision
;
1662 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1663 hw
->subsystem_device_id
= pdev
->subsystem_device
;
1666 memcpy(&hw
->mac
.ops
, fi
->mac_ops
, sizeof(hw
->mac
.ops
));
1667 hw
->mac
.type
= fi
->mac
;
1669 /* Setup IOV handlers */
1671 memcpy(&hw
->iov
.ops
, fi
->iov_ops
, sizeof(hw
->iov
.ops
));
1673 /* Set common capability flags and settings */
1674 rss
= min_t(int, FM10K_MAX_RSS_INDICES
, num_online_cpus());
1675 interface
->ring_feature
[RING_F_RSS
].limit
= rss
;
1676 fi
->get_invariants(hw
);
1678 /* pick up the PCIe bus settings for reporting later */
1679 if (hw
->mac
.ops
.get_bus_info
)
1680 hw
->mac
.ops
.get_bus_info(hw
);
1682 /* limit the usable DMA range */
1683 if (hw
->mac
.ops
.set_dma_mask
)
1684 hw
->mac
.ops
.set_dma_mask(hw
, dma_get_mask(&pdev
->dev
));
1686 /* update netdev with DMA restrictions */
1687 if (dma_get_mask(&pdev
->dev
) > DMA_BIT_MASK(32)) {
1688 netdev
->features
|= NETIF_F_HIGHDMA
;
1689 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
1692 /* delay any future reset requests */
1693 interface
->last_reset
= jiffies
+ (10 * HZ
);
1695 /* reset and initialize the hardware so it is in a known state */
1696 err
= hw
->mac
.ops
.reset_hw(hw
);
1698 dev_err(&pdev
->dev
, "reset_hw failed: %d\n", err
);
1702 err
= hw
->mac
.ops
.init_hw(hw
);
1704 dev_err(&pdev
->dev
, "init_hw failed: %d\n", err
);
1708 /* initialize hardware statistics */
1709 hw
->mac
.ops
.update_hw_stats(hw
, &interface
->stats
);
1711 /* Set upper limit on IOV VFs that can be allocated */
1712 pci_sriov_set_totalvfs(pdev
, hw
->iov
.total_vfs
);
1714 /* Start with random Ethernet address */
1715 eth_random_addr(hw
->mac
.addr
);
1717 /* Initialize MAC address from hardware */
1718 err
= hw
->mac
.ops
.read_mac_addr(hw
);
1720 dev_warn(&pdev
->dev
,
1721 "Failed to obtain MAC address defaulting to random\n");
1722 /* tag address assignment as random */
1723 netdev
->addr_assign_type
|= NET_ADDR_RANDOM
;
1726 ether_addr_copy(netdev
->dev_addr
, hw
->mac
.addr
);
1727 ether_addr_copy(netdev
->perm_addr
, hw
->mac
.addr
);
1729 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1730 dev_err(&pdev
->dev
, "Invalid MAC Address\n");
1734 /* initialize DCBNL interface */
1735 fm10k_dcbnl_set_ops(netdev
);
1737 /* set default ring sizes */
1738 interface
->tx_ring_count
= FM10K_DEFAULT_TXD
;
1739 interface
->rx_ring_count
= FM10K_DEFAULT_RXD
;
1741 /* set default interrupt moderation */
1742 interface
->tx_itr
= FM10K_TX_ITR_DEFAULT
;
1743 interface
->rx_itr
= FM10K_ITR_ADAPTIVE
| FM10K_RX_ITR_DEFAULT
;
1745 /* initialize vxlan_port list */
1746 INIT_LIST_HEAD(&interface
->vxlan_port
);
1748 netdev_rss_key_fill(rss_key
, sizeof(rss_key
));
1749 memcpy(interface
->rssrk
, rss_key
, sizeof(rss_key
));
1751 /* Start off interface as being down */
1752 set_bit(__FM10K_DOWN
, &interface
->state
);
1757 static void fm10k_slot_warn(struct fm10k_intfc
*interface
)
1759 enum pcie_link_width width
= PCIE_LNK_WIDTH_UNKNOWN
;
1760 enum pci_bus_speed speed
= PCI_SPEED_UNKNOWN
;
1761 struct fm10k_hw
*hw
= &interface
->hw
;
1762 int max_gts
= 0, expected_gts
= 0;
1764 if (pcie_get_minimum_link(interface
->pdev
, &speed
, &width
) ||
1765 speed
== PCI_SPEED_UNKNOWN
|| width
== PCIE_LNK_WIDTH_UNKNOWN
) {
1766 dev_warn(&interface
->pdev
->dev
,
1767 "Unable to determine PCI Express bandwidth.\n");
1772 case PCIE_SPEED_2_5GT
:
1773 /* 8b/10b encoding reduces max throughput by 20% */
1774 max_gts
= 2 * width
;
1776 case PCIE_SPEED_5_0GT
:
1777 /* 8b/10b encoding reduces max throughput by 20% */
1778 max_gts
= 4 * width
;
1780 case PCIE_SPEED_8_0GT
:
1781 /* 128b/130b encoding has less than 2% impact on throughput */
1782 max_gts
= 8 * width
;
1785 dev_warn(&interface
->pdev
->dev
,
1786 "Unable to determine PCI Express bandwidth.\n");
1790 dev_info(&interface
->pdev
->dev
,
1791 "PCI Express bandwidth of %dGT/s available\n",
1793 dev_info(&interface
->pdev
->dev
,
1794 "(Speed:%s, Width: x%d, Encoding Loss:%s, Payload:%s)\n",
1795 (speed
== PCIE_SPEED_8_0GT
? "8.0GT/s" :
1796 speed
== PCIE_SPEED_5_0GT
? "5.0GT/s" :
1797 speed
== PCIE_SPEED_2_5GT
? "2.5GT/s" :
1800 (speed
== PCIE_SPEED_2_5GT
? "20%" :
1801 speed
== PCIE_SPEED_5_0GT
? "20%" :
1802 speed
== PCIE_SPEED_8_0GT
? "<2%" :
1804 (hw
->bus
.payload
== fm10k_bus_payload_128
? "128B" :
1805 hw
->bus
.payload
== fm10k_bus_payload_256
? "256B" :
1806 hw
->bus
.payload
== fm10k_bus_payload_512
? "512B" :
1809 switch (hw
->bus_caps
.speed
) {
1810 case fm10k_bus_speed_2500
:
1811 /* 8b/10b encoding reduces max throughput by 20% */
1812 expected_gts
= 2 * hw
->bus_caps
.width
;
1814 case fm10k_bus_speed_5000
:
1815 /* 8b/10b encoding reduces max throughput by 20% */
1816 expected_gts
= 4 * hw
->bus_caps
.width
;
1818 case fm10k_bus_speed_8000
:
1819 /* 128b/130b encoding has less than 2% impact on throughput */
1820 expected_gts
= 8 * hw
->bus_caps
.width
;
1823 dev_warn(&interface
->pdev
->dev
,
1824 "Unable to determine expected PCI Express bandwidth.\n");
1828 if (max_gts
>= expected_gts
)
1831 dev_warn(&interface
->pdev
->dev
,
1832 "This device requires %dGT/s of bandwidth for optimal performance.\n",
1834 dev_warn(&interface
->pdev
->dev
,
1835 "A %sslot with x%d lanes is suggested.\n",
1836 (hw
->bus_caps
.speed
== fm10k_bus_speed_2500
? "2.5GT/s " :
1837 hw
->bus_caps
.speed
== fm10k_bus_speed_5000
? "5.0GT/s " :
1838 hw
->bus_caps
.speed
== fm10k_bus_speed_8000
? "8.0GT/s " : ""),
1839 hw
->bus_caps
.width
);
1843 * fm10k_probe - Device Initialization Routine
1844 * @pdev: PCI device information struct
1845 * @ent: entry in fm10k_pci_tbl
1847 * Returns 0 on success, negative on failure
1849 * fm10k_probe initializes an interface identified by a pci_dev structure.
1850 * The OS initialization, configuring of the interface private structure,
1851 * and a hardware reset occur.
1853 static int fm10k_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
1855 struct net_device
*netdev
;
1856 struct fm10k_intfc
*interface
;
1859 err
= pci_enable_device_mem(pdev
);
1863 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(48));
1865 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
1868 "DMA configuration failed: %d\n", err
);
1872 err
= pci_request_selected_regions(pdev
,
1873 pci_select_bars(pdev
,
1878 "pci_request_selected_regions failed: %d\n", err
);
1882 pci_enable_pcie_error_reporting(pdev
);
1884 pci_set_master(pdev
);
1885 pci_save_state(pdev
);
1887 netdev
= fm10k_alloc_netdev(fm10k_info_tbl
[ent
->driver_data
]);
1890 goto err_alloc_netdev
;
1893 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
1895 interface
= netdev_priv(netdev
);
1896 pci_set_drvdata(pdev
, interface
);
1898 interface
->netdev
= netdev
;
1899 interface
->pdev
= pdev
;
1901 interface
->uc_addr
= ioremap(pci_resource_start(pdev
, 0),
1902 FM10K_UC_ADDR_SIZE
);
1903 if (!interface
->uc_addr
) {
1908 err
= fm10k_sw_init(interface
, ent
);
1912 /* enable debugfs support */
1913 fm10k_dbg_intfc_init(interface
);
1915 err
= fm10k_init_queueing_scheme(interface
);
1919 /* the mbx interrupt might attempt to schedule the service task, so we
1920 * must ensure it is disabled since we haven't yet requested the timer
1923 set_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
1925 err
= fm10k_mbx_request_irq(interface
);
1927 goto err_mbx_interrupt
;
1929 /* final check of hardware state before registering the interface */
1930 err
= fm10k_hw_ready(interface
);
1934 err
= register_netdev(netdev
);
1938 /* carrier off reporting is important to ethtool even BEFORE open */
1939 netif_carrier_off(netdev
);
1941 /* stop all the transmit queues from transmitting until link is up */
1942 netif_tx_stop_all_queues(netdev
);
1944 /* Initialize service timer and service task late in order to avoid
1947 setup_timer(&interface
->service_timer
, &fm10k_service_timer
,
1948 (unsigned long)interface
);
1949 INIT_WORK(&interface
->service_task
, fm10k_service_task
);
1951 /* kick off service timer now, even when interface is down */
1952 mod_timer(&interface
->service_timer
, (HZ
* 2) + jiffies
);
1954 /* print warning for non-optimal configurations */
1955 fm10k_slot_warn(interface
);
1957 /* report MAC address for logging */
1958 dev_info(&pdev
->dev
, "%pM\n", netdev
->dev_addr
);
1960 /* enable SR-IOV after registering netdev to enforce PF/VF ordering */
1961 fm10k_iov_configure(pdev
, 0);
1963 /* clear the service task disable bit to allow service task to start */
1964 clear_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
1969 fm10k_mbx_free_irq(interface
);
1971 fm10k_clear_queueing_scheme(interface
);
1973 if (interface
->sw_addr
)
1974 iounmap(interface
->sw_addr
);
1975 iounmap(interface
->uc_addr
);
1977 free_netdev(netdev
);
1979 pci_release_selected_regions(pdev
,
1980 pci_select_bars(pdev
, IORESOURCE_MEM
));
1983 pci_disable_device(pdev
);
1988 * fm10k_remove - Device Removal Routine
1989 * @pdev: PCI device information struct
1991 * fm10k_remove is called by the PCI subsystem to alert the driver
1992 * that it should release a PCI device. The could be caused by a
1993 * Hot-Plug event, or because the driver is going to be removed from
1996 static void fm10k_remove(struct pci_dev
*pdev
)
1998 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
1999 struct net_device
*netdev
= interface
->netdev
;
2001 del_timer_sync(&interface
->service_timer
);
2003 set_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
2004 cancel_work_sync(&interface
->service_task
);
2006 /* free netdev, this may bounce the interrupts due to setup_tc */
2007 if (netdev
->reg_state
== NETREG_REGISTERED
)
2008 unregister_netdev(netdev
);
2011 fm10k_iov_disable(pdev
);
2013 /* disable mailbox interrupt */
2014 fm10k_mbx_free_irq(interface
);
2016 /* free interrupts */
2017 fm10k_clear_queueing_scheme(interface
);
2019 /* remove any debugfs interfaces */
2020 fm10k_dbg_intfc_exit(interface
);
2022 if (interface
->sw_addr
)
2023 iounmap(interface
->sw_addr
);
2024 iounmap(interface
->uc_addr
);
2026 free_netdev(netdev
);
2028 pci_release_selected_regions(pdev
,
2029 pci_select_bars(pdev
, IORESOURCE_MEM
));
2031 pci_disable_pcie_error_reporting(pdev
);
2033 pci_disable_device(pdev
);
2038 * fm10k_resume - Restore device to pre-sleep state
2039 * @pdev: PCI device information struct
2041 * fm10k_resume is called after the system has powered back up from a sleep
2042 * state and is ready to resume operation. This function is meant to restore
2043 * the device back to its pre-sleep state.
2045 static int fm10k_resume(struct pci_dev
*pdev
)
2047 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2048 struct net_device
*netdev
= interface
->netdev
;
2049 struct fm10k_hw
*hw
= &interface
->hw
;
2052 pci_set_power_state(pdev
, PCI_D0
);
2053 pci_restore_state(pdev
);
2055 /* pci_restore_state clears dev->state_saved so call
2056 * pci_save_state to restore it.
2058 pci_save_state(pdev
);
2060 err
= pci_enable_device_mem(pdev
);
2062 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
2065 pci_set_master(pdev
);
2067 pci_wake_from_d3(pdev
, false);
2069 /* refresh hw_addr in case it was dropped */
2070 hw
->hw_addr
= interface
->uc_addr
;
2072 /* reset hardware to known state */
2073 err
= hw
->mac
.ops
.init_hw(&interface
->hw
);
2075 dev_err(&pdev
->dev
, "init_hw failed: %d\n", err
);
2079 /* reset statistics starting values */
2080 hw
->mac
.ops
.rebind_hw_stats(hw
, &interface
->stats
);
2084 err
= fm10k_init_queueing_scheme(interface
);
2086 goto err_queueing_scheme
;
2088 err
= fm10k_mbx_request_irq(interface
);
2092 err
= fm10k_hw_ready(interface
);
2096 err
= netif_running(netdev
) ? fm10k_open(netdev
) : 0;
2102 /* assume host is not ready, to prevent race with watchdog in case we
2103 * actually don't have connection to the switch
2105 interface
->host_ready
= false;
2106 fm10k_watchdog_host_not_ready(interface
);
2108 /* clear the service task disable bit to allow service task to start */
2109 clear_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
2110 fm10k_service_event_schedule(interface
);
2112 /* restore SR-IOV interface */
2113 fm10k_iov_resume(pdev
);
2115 netif_device_attach(netdev
);
2119 fm10k_mbx_free_irq(interface
);
2121 fm10k_clear_queueing_scheme(interface
);
2122 err_queueing_scheme
:
2129 * fm10k_suspend - Prepare the device for a system sleep state
2130 * @pdev: PCI device information struct
2132 * fm10k_suspend is meant to shutdown the device prior to the system entering
2133 * a sleep state. The fm10k hardware does not support wake on lan so the
2134 * driver simply needs to shut down the device so it is in a low power state.
2136 static int fm10k_suspend(struct pci_dev
*pdev
,
2137 pm_message_t __always_unused state
)
2139 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2140 struct net_device
*netdev
= interface
->netdev
;
2143 netif_device_detach(netdev
);
2145 fm10k_iov_suspend(pdev
);
2147 /* the watchdog tasks may read registers, which will appear like a
2148 * surprise-remove event once the PCI device is disabled. This will
2149 * cause us to close the netdevice, so we don't retain the open/closed
2150 * state post-resume. Prevent this by disabling the service task while
2151 * suspended, until we actually resume.
2153 set_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
2154 cancel_work_sync(&interface
->service_task
);
2158 if (netif_running(netdev
))
2159 fm10k_close(netdev
);
2161 fm10k_mbx_free_irq(interface
);
2163 fm10k_clear_queueing_scheme(interface
);
2167 err
= pci_save_state(pdev
);
2171 pci_disable_device(pdev
);
2172 pci_wake_from_d3(pdev
, false);
2173 pci_set_power_state(pdev
, PCI_D3hot
);
2178 #endif /* CONFIG_PM */
2180 * fm10k_io_error_detected - called when PCI error is detected
2181 * @pdev: Pointer to PCI device
2182 * @state: The current pci connection state
2184 * This function is called after a PCI bus error affecting
2185 * this device has been detected.
2187 static pci_ers_result_t
fm10k_io_error_detected(struct pci_dev
*pdev
,
2188 pci_channel_state_t state
)
2190 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2191 struct net_device
*netdev
= interface
->netdev
;
2193 netif_device_detach(netdev
);
2195 if (state
== pci_channel_io_perm_failure
)
2196 return PCI_ERS_RESULT_DISCONNECT
;
2200 if (netif_running(netdev
))
2201 fm10k_close(netdev
);
2203 fm10k_mbx_free_irq(interface
);
2205 /* free interrupts */
2206 fm10k_clear_queueing_scheme(interface
);
2210 /* Request a slot reset. */
2211 return PCI_ERS_RESULT_NEED_RESET
;
2215 * fm10k_io_slot_reset - called after the pci bus has been reset.
2216 * @pdev: Pointer to PCI device
2218 * Restart the card from scratch, as if from a cold-boot.
2220 static pci_ers_result_t
fm10k_io_slot_reset(struct pci_dev
*pdev
)
2222 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2223 pci_ers_result_t result
;
2225 if (pci_enable_device_mem(pdev
)) {
2227 "Cannot re-enable PCI device after reset.\n");
2228 result
= PCI_ERS_RESULT_DISCONNECT
;
2230 pci_set_master(pdev
);
2231 pci_restore_state(pdev
);
2233 /* After second error pci->state_saved is false, this
2234 * resets it so EEH doesn't break.
2236 pci_save_state(pdev
);
2238 pci_wake_from_d3(pdev
, false);
2240 /* refresh hw_addr in case it was dropped */
2241 interface
->hw
.hw_addr
= interface
->uc_addr
;
2243 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
2244 fm10k_service_event_schedule(interface
);
2246 result
= PCI_ERS_RESULT_RECOVERED
;
2249 pci_cleanup_aer_uncorrect_error_status(pdev
);
2255 * fm10k_io_resume - called when traffic can start flowing again.
2256 * @pdev: Pointer to PCI device
2258 * This callback is called when the error recovery driver tells us that
2259 * its OK to resume normal operation.
2261 static void fm10k_io_resume(struct pci_dev
*pdev
)
2263 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2264 struct net_device
*netdev
= interface
->netdev
;
2265 struct fm10k_hw
*hw
= &interface
->hw
;
2268 /* reset hardware to known state */
2269 err
= hw
->mac
.ops
.init_hw(&interface
->hw
);
2271 dev_err(&pdev
->dev
, "init_hw failed: %d\n", err
);
2275 /* reset statistics starting values */
2276 hw
->mac
.ops
.rebind_hw_stats(hw
, &interface
->stats
);
2280 err
= fm10k_init_queueing_scheme(interface
);
2282 dev_err(&interface
->pdev
->dev
,
2283 "init_queueing_scheme failed: %d\n", err
);
2287 /* reassociate interrupts */
2288 fm10k_mbx_request_irq(interface
);
2291 if (netif_running(netdev
))
2292 err
= fm10k_open(netdev
);
2295 /* final check of hardware state before registering the interface */
2296 err
= err
? : fm10k_hw_ready(interface
);
2299 netif_device_attach(netdev
);
2305 static const struct pci_error_handlers fm10k_err_handler
= {
2306 .error_detected
= fm10k_io_error_detected
,
2307 .slot_reset
= fm10k_io_slot_reset
,
2308 .resume
= fm10k_io_resume
,
2311 static struct pci_driver fm10k_driver
= {
2312 .name
= fm10k_driver_name
,
2313 .id_table
= fm10k_pci_tbl
,
2314 .probe
= fm10k_probe
,
2315 .remove
= fm10k_remove
,
2317 .suspend
= fm10k_suspend
,
2318 .resume
= fm10k_resume
,
2320 .sriov_configure
= fm10k_iov_configure
,
2321 .err_handler
= &fm10k_err_handler
2325 * fm10k_register_pci_driver - register driver interface
2327 * This function is called on module load in order to register the driver.
2329 int fm10k_register_pci_driver(void)
2331 return pci_register_driver(&fm10k_driver
);
2335 * fm10k_unregister_pci_driver - unregister driver interface
2337 * This function is called on module unload in order to remove the driver.
2339 void fm10k_unregister_pci_driver(void)
2341 pci_unregister_driver(&fm10k_driver
);