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
= READ_ONCE(interface
->tx_ring
[i
]);
385 restart_queue
+= tx_ring
->tx_stats
.restart_queue
;
386 tx_busy
+= tx_ring
->tx_stats
.tx_busy
;
387 tx_csum_errors
+= tx_ring
->tx_stats
.csum_err
;
388 bytes
+= tx_ring
->stats
.bytes
;
389 pkts
+= tx_ring
->stats
.packets
;
390 hw_csum_tx_good
+= tx_ring
->tx_stats
.csum_good
;
393 interface
->restart_queue
= restart_queue
;
394 interface
->tx_busy
= tx_busy
;
395 net_stats
->tx_bytes
= bytes
;
396 net_stats
->tx_packets
= pkts
;
397 interface
->tx_csum_errors
= tx_csum_errors
;
398 interface
->hw_csum_tx_good
= hw_csum_tx_good
;
400 /* gather some stats to the interface struct that are per queue */
401 for (bytes
= 0, pkts
= 0, i
= 0; i
< interface
->num_rx_queues
; i
++) {
402 struct fm10k_ring
*rx_ring
= READ_ONCE(interface
->rx_ring
[i
]);
407 bytes
+= rx_ring
->stats
.bytes
;
408 pkts
+= rx_ring
->stats
.packets
;
409 alloc_failed
+= rx_ring
->rx_stats
.alloc_failed
;
410 rx_csum_errors
+= rx_ring
->rx_stats
.csum_err
;
411 rx_errors
+= rx_ring
->rx_stats
.errors
;
412 hw_csum_rx_good
+= rx_ring
->rx_stats
.csum_good
;
413 rx_switch_errors
+= rx_ring
->rx_stats
.switch_errors
;
414 rx_drops
+= rx_ring
->rx_stats
.drops
;
415 rx_pp_errors
+= rx_ring
->rx_stats
.pp_errors
;
416 rx_link_errors
+= rx_ring
->rx_stats
.link_errors
;
417 rx_length_errors
+= rx_ring
->rx_stats
.length_errors
;
420 net_stats
->rx_bytes
= bytes
;
421 net_stats
->rx_packets
= pkts
;
422 interface
->alloc_failed
= alloc_failed
;
423 interface
->rx_csum_errors
= rx_csum_errors
;
424 interface
->hw_csum_rx_good
= hw_csum_rx_good
;
425 interface
->rx_switch_errors
= rx_switch_errors
;
426 interface
->rx_drops
= rx_drops
;
427 interface
->rx_pp_errors
= rx_pp_errors
;
428 interface
->rx_link_errors
= rx_link_errors
;
429 interface
->rx_length_errors
= rx_length_errors
;
431 hw
->mac
.ops
.update_hw_stats(hw
, &interface
->stats
);
433 for (i
= 0; i
< hw
->mac
.max_queues
; i
++) {
434 struct fm10k_hw_stats_q
*q
= &interface
->stats
.q
[i
];
436 tx_bytes_nic
+= q
->tx_bytes
.count
;
437 tx_pkts_nic
+= q
->tx_packets
.count
;
438 rx_bytes_nic
+= q
->rx_bytes
.count
;
439 rx_pkts_nic
+= q
->rx_packets
.count
;
440 rx_drops_nic
+= q
->rx_drops
.count
;
443 interface
->tx_bytes_nic
= tx_bytes_nic
;
444 interface
->tx_packets_nic
= tx_pkts_nic
;
445 interface
->rx_bytes_nic
= rx_bytes_nic
;
446 interface
->rx_packets_nic
= rx_pkts_nic
;
447 interface
->rx_drops_nic
= rx_drops_nic
;
449 /* Fill out the OS statistics structure */
450 net_stats
->rx_errors
= rx_errors
;
451 net_stats
->rx_dropped
= interface
->stats
.nodesc_drop
.count
;
455 * fm10k_watchdog_flush_tx - flush queues on host not ready
456 * @interface - pointer to the device interface structure
458 static void fm10k_watchdog_flush_tx(struct fm10k_intfc
*interface
)
460 int some_tx_pending
= 0;
463 /* nothing to do if carrier is up */
464 if (netif_carrier_ok(interface
->netdev
))
467 for (i
= 0; i
< interface
->num_tx_queues
; i
++) {
468 struct fm10k_ring
*tx_ring
= interface
->tx_ring
[i
];
470 if (tx_ring
->next_to_use
!= tx_ring
->next_to_clean
) {
476 /* We've lost link, so the controller stops DMA, but we've got
477 * queued Tx work that's never going to get done, so reset
478 * controller to flush Tx.
481 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
485 * fm10k_watchdog_subtask - check and bring link up
486 * @interface - pointer to the device interface structure
488 static void fm10k_watchdog_subtask(struct fm10k_intfc
*interface
)
490 /* if interface is down do nothing */
491 if (test_bit(__FM10K_DOWN
, &interface
->state
) ||
492 test_bit(__FM10K_RESETTING
, &interface
->state
))
495 if (interface
->host_ready
)
496 fm10k_watchdog_host_is_ready(interface
);
498 fm10k_watchdog_host_not_ready(interface
);
500 /* update stats only once every second */
501 if (time_is_before_jiffies(interface
->next_stats_update
))
502 fm10k_update_stats(interface
);
504 /* flush any uncompleted work */
505 fm10k_watchdog_flush_tx(interface
);
509 * fm10k_check_hang_subtask - check for hung queues and dropped interrupts
510 * @interface - pointer to the device interface structure
512 * This function serves two purposes. First it strobes the interrupt lines
513 * in order to make certain interrupts are occurring. Secondly it sets the
514 * bits needed to check for TX hangs. As a result we should immediately
515 * determine if a hang has occurred.
517 static void fm10k_check_hang_subtask(struct fm10k_intfc
*interface
)
521 /* If we're down or resetting, just bail */
522 if (test_bit(__FM10K_DOWN
, &interface
->state
) ||
523 test_bit(__FM10K_RESETTING
, &interface
->state
))
526 /* rate limit tx hang checks to only once every 2 seconds */
527 if (time_is_after_eq_jiffies(interface
->next_tx_hang_check
))
529 interface
->next_tx_hang_check
= jiffies
+ (2 * HZ
);
531 if (netif_carrier_ok(interface
->netdev
)) {
532 /* Force detection of hung controller */
533 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
534 set_check_for_tx_hang(interface
->tx_ring
[i
]);
536 /* Rearm all in-use q_vectors for immediate firing */
537 for (i
= 0; i
< interface
->num_q_vectors
; i
++) {
538 struct fm10k_q_vector
*qv
= interface
->q_vector
[i
];
540 if (!qv
->tx
.count
&& !qv
->rx
.count
)
542 writel(FM10K_ITR_ENABLE
| FM10K_ITR_PENDING2
, qv
->itr
);
548 * fm10k_service_task - manages and runs subtasks
549 * @work: pointer to work_struct containing our data
551 static void fm10k_service_task(struct work_struct
*work
)
553 struct fm10k_intfc
*interface
;
555 interface
= container_of(work
, struct fm10k_intfc
, service_task
);
557 /* tasks run even when interface is down */
558 fm10k_mbx_subtask(interface
);
559 fm10k_detach_subtask(interface
);
560 fm10k_reset_subtask(interface
);
562 /* tasks only run when interface is up */
563 fm10k_watchdog_subtask(interface
);
564 fm10k_check_hang_subtask(interface
);
566 /* release lock on service events to allow scheduling next event */
567 fm10k_service_event_complete(interface
);
571 * fm10k_configure_tx_ring - Configure Tx ring after Reset
572 * @interface: board private structure
573 * @ring: structure containing ring specific data
575 * Configure the Tx descriptor ring after a reset.
577 static void fm10k_configure_tx_ring(struct fm10k_intfc
*interface
,
578 struct fm10k_ring
*ring
)
580 struct fm10k_hw
*hw
= &interface
->hw
;
581 u64 tdba
= ring
->dma
;
582 u32 size
= ring
->count
* sizeof(struct fm10k_tx_desc
);
583 u32 txint
= FM10K_INT_MAP_DISABLE
;
584 u32 txdctl
= BIT(FM10K_TXDCTL_MAX_TIME_SHIFT
) | FM10K_TXDCTL_ENABLE
;
585 u8 reg_idx
= ring
->reg_idx
;
587 /* disable queue to avoid issues while updating state */
588 fm10k_write_reg(hw
, FM10K_TXDCTL(reg_idx
), 0);
589 fm10k_write_flush(hw
);
591 /* possible poll here to verify ring resources have been cleaned */
593 /* set location and size for descriptor ring */
594 fm10k_write_reg(hw
, FM10K_TDBAL(reg_idx
), tdba
& DMA_BIT_MASK(32));
595 fm10k_write_reg(hw
, FM10K_TDBAH(reg_idx
), tdba
>> 32);
596 fm10k_write_reg(hw
, FM10K_TDLEN(reg_idx
), size
);
598 /* reset head and tail pointers */
599 fm10k_write_reg(hw
, FM10K_TDH(reg_idx
), 0);
600 fm10k_write_reg(hw
, FM10K_TDT(reg_idx
), 0);
602 /* store tail pointer */
603 ring
->tail
= &interface
->uc_addr
[FM10K_TDT(reg_idx
)];
605 /* reset ntu and ntc to place SW in sync with hardware */
606 ring
->next_to_clean
= 0;
607 ring
->next_to_use
= 0;
610 if (ring
->q_vector
) {
611 txint
= ring
->q_vector
->v_idx
+ NON_Q_VECTORS(hw
);
612 txint
|= FM10K_INT_MAP_TIMER0
;
615 fm10k_write_reg(hw
, FM10K_TXINT(reg_idx
), txint
);
617 /* enable use of FTAG bit in Tx descriptor, register is RO for VF */
618 fm10k_write_reg(hw
, FM10K_PFVTCTL(reg_idx
),
619 FM10K_PFVTCTL_FTAG_DESC_ENABLE
);
622 if (!test_and_set_bit(__FM10K_TX_XPS_INIT_DONE
, &ring
->state
) &&
624 netif_set_xps_queue(ring
->netdev
,
625 &ring
->q_vector
->affinity_mask
,
629 fm10k_write_reg(hw
, FM10K_TXDCTL(reg_idx
), txdctl
);
633 * fm10k_enable_tx_ring - Verify Tx ring is enabled after configuration
634 * @interface: board private structure
635 * @ring: structure containing ring specific data
637 * Verify the Tx descriptor ring is ready for transmit.
639 static void fm10k_enable_tx_ring(struct fm10k_intfc
*interface
,
640 struct fm10k_ring
*ring
)
642 struct fm10k_hw
*hw
= &interface
->hw
;
645 u8 reg_idx
= ring
->reg_idx
;
647 /* if we are already enabled just exit */
648 if (fm10k_read_reg(hw
, FM10K_TXDCTL(reg_idx
)) & FM10K_TXDCTL_ENABLE
)
651 /* poll to verify queue is enabled */
653 usleep_range(1000, 2000);
654 txdctl
= fm10k_read_reg(hw
, FM10K_TXDCTL(reg_idx
));
655 } while (!(txdctl
& FM10K_TXDCTL_ENABLE
) && --wait_loop
);
657 netif_err(interface
, drv
, interface
->netdev
,
658 "Could not enable Tx Queue %d\n", reg_idx
);
662 * fm10k_configure_tx - Configure Transmit Unit after Reset
663 * @interface: board private structure
665 * Configure the Tx unit of the MAC after a reset.
667 static void fm10k_configure_tx(struct fm10k_intfc
*interface
)
671 /* Setup the HW Tx Head and Tail descriptor pointers */
672 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
673 fm10k_configure_tx_ring(interface
, interface
->tx_ring
[i
]);
675 /* poll here to verify that Tx rings are now enabled */
676 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
677 fm10k_enable_tx_ring(interface
, interface
->tx_ring
[i
]);
681 * fm10k_configure_rx_ring - Configure Rx ring after Reset
682 * @interface: board private structure
683 * @ring: structure containing ring specific data
685 * Configure the Rx descriptor ring after a reset.
687 static void fm10k_configure_rx_ring(struct fm10k_intfc
*interface
,
688 struct fm10k_ring
*ring
)
690 u64 rdba
= ring
->dma
;
691 struct fm10k_hw
*hw
= &interface
->hw
;
692 u32 size
= ring
->count
* sizeof(union fm10k_rx_desc
);
693 u32 rxqctl
= FM10K_RXQCTL_ENABLE
| FM10K_RXQCTL_PF
;
694 u32 rxdctl
= FM10K_RXDCTL_WRITE_BACK_MIN_DELAY
;
695 u32 srrctl
= FM10K_SRRCTL_BUFFER_CHAINING_EN
;
696 u32 rxint
= FM10K_INT_MAP_DISABLE
;
697 u8 rx_pause
= interface
->rx_pause
;
698 u8 reg_idx
= ring
->reg_idx
;
700 /* disable queue to avoid issues while updating state */
701 fm10k_write_reg(hw
, FM10K_RXQCTL(reg_idx
), 0);
702 fm10k_write_flush(hw
);
704 /* possible poll here to verify ring resources have been cleaned */
706 /* set location and size for descriptor ring */
707 fm10k_write_reg(hw
, FM10K_RDBAL(reg_idx
), rdba
& DMA_BIT_MASK(32));
708 fm10k_write_reg(hw
, FM10K_RDBAH(reg_idx
), rdba
>> 32);
709 fm10k_write_reg(hw
, FM10K_RDLEN(reg_idx
), size
);
711 /* reset head and tail pointers */
712 fm10k_write_reg(hw
, FM10K_RDH(reg_idx
), 0);
713 fm10k_write_reg(hw
, FM10K_RDT(reg_idx
), 0);
715 /* store tail pointer */
716 ring
->tail
= &interface
->uc_addr
[FM10K_RDT(reg_idx
)];
718 /* reset ntu and ntc to place SW in sync with hardware */
719 ring
->next_to_clean
= 0;
720 ring
->next_to_use
= 0;
721 ring
->next_to_alloc
= 0;
723 /* Configure the Rx buffer size for one buff without split */
724 srrctl
|= FM10K_RX_BUFSZ
>> FM10K_SRRCTL_BSIZEPKT_SHIFT
;
726 /* Configure the Rx ring to suppress loopback packets */
727 srrctl
|= FM10K_SRRCTL_LOOPBACK_SUPPRESS
;
728 fm10k_write_reg(hw
, FM10K_SRRCTL(reg_idx
), srrctl
);
730 /* Enable drop on empty */
732 if (interface
->pfc_en
)
733 rx_pause
= interface
->pfc_en
;
735 if (!(rx_pause
& BIT(ring
->qos_pc
)))
736 rxdctl
|= FM10K_RXDCTL_DROP_ON_EMPTY
;
738 fm10k_write_reg(hw
, FM10K_RXDCTL(reg_idx
), rxdctl
);
740 /* assign default VLAN to queue */
741 ring
->vid
= hw
->mac
.default_vid
;
743 /* if we have an active VLAN, disable default VLAN ID */
744 if (test_bit(hw
->mac
.default_vid
, interface
->active_vlans
))
745 ring
->vid
|= FM10K_VLAN_CLEAR
;
748 if (ring
->q_vector
) {
749 rxint
= ring
->q_vector
->v_idx
+ NON_Q_VECTORS(hw
);
750 rxint
|= FM10K_INT_MAP_TIMER1
;
753 fm10k_write_reg(hw
, FM10K_RXINT(reg_idx
), rxint
);
756 fm10k_write_reg(hw
, FM10K_RXQCTL(reg_idx
), rxqctl
);
758 /* place buffers on ring for receive data */
759 fm10k_alloc_rx_buffers(ring
, fm10k_desc_unused(ring
));
763 * fm10k_update_rx_drop_en - Configures the drop enable bits for Rx rings
764 * @interface: board private structure
766 * Configure the drop enable bits for the Rx rings.
768 void fm10k_update_rx_drop_en(struct fm10k_intfc
*interface
)
770 struct fm10k_hw
*hw
= &interface
->hw
;
771 u8 rx_pause
= interface
->rx_pause
;
775 if (interface
->pfc_en
)
776 rx_pause
= interface
->pfc_en
;
779 for (i
= 0; i
< interface
->num_rx_queues
; i
++) {
780 struct fm10k_ring
*ring
= interface
->rx_ring
[i
];
781 u32 rxdctl
= FM10K_RXDCTL_WRITE_BACK_MIN_DELAY
;
782 u8 reg_idx
= ring
->reg_idx
;
784 if (!(rx_pause
& BIT(ring
->qos_pc
)))
785 rxdctl
|= FM10K_RXDCTL_DROP_ON_EMPTY
;
787 fm10k_write_reg(hw
, FM10K_RXDCTL(reg_idx
), rxdctl
);
792 * fm10k_configure_dglort - Configure Receive DGLORT after reset
793 * @interface: board private structure
795 * Configure the DGLORT description and RSS tables.
797 static void fm10k_configure_dglort(struct fm10k_intfc
*interface
)
799 struct fm10k_dglort_cfg dglort
= { 0 };
800 struct fm10k_hw
*hw
= &interface
->hw
;
804 /* Fill out hash function seeds */
805 for (i
= 0; i
< FM10K_RSSRK_SIZE
; i
++)
806 fm10k_write_reg(hw
, FM10K_RSSRK(0, i
), interface
->rssrk
[i
]);
808 /* Write RETA table to hardware */
809 for (i
= 0; i
< FM10K_RETA_SIZE
; i
++)
810 fm10k_write_reg(hw
, FM10K_RETA(0, i
), interface
->reta
[i
]);
812 /* Generate RSS hash based on packet types, TCP/UDP
813 * port numbers and/or IPv4/v6 src and dst addresses
815 mrqc
= FM10K_MRQC_IPV4
|
816 FM10K_MRQC_TCP_IPV4
|
820 if (interface
->flags
& FM10K_FLAG_RSS_FIELD_IPV4_UDP
)
821 mrqc
|= FM10K_MRQC_UDP_IPV4
;
822 if (interface
->flags
& FM10K_FLAG_RSS_FIELD_IPV6_UDP
)
823 mrqc
|= FM10K_MRQC_UDP_IPV6
;
825 fm10k_write_reg(hw
, FM10K_MRQC(0), mrqc
);
827 /* configure default DGLORT mapping for RSS/DCB */
828 dglort
.inner_rss
= 1;
829 dglort
.rss_l
= fls(interface
->ring_feature
[RING_F_RSS
].mask
);
830 dglort
.pc_l
= fls(interface
->ring_feature
[RING_F_QOS
].mask
);
831 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
833 /* assign GLORT per queue for queue mapped testing */
834 if (interface
->glort_count
> 64) {
835 memset(&dglort
, 0, sizeof(dglort
));
836 dglort
.inner_rss
= 1;
837 dglort
.glort
= interface
->glort
+ 64;
838 dglort
.idx
= fm10k_dglort_pf_queue
;
839 dglort
.queue_l
= fls(interface
->num_rx_queues
- 1);
840 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
843 /* assign glort value for RSS/DCB specific to this interface */
844 memset(&dglort
, 0, sizeof(dglort
));
845 dglort
.inner_rss
= 1;
846 dglort
.glort
= interface
->glort
;
847 dglort
.rss_l
= fls(interface
->ring_feature
[RING_F_RSS
].mask
);
848 dglort
.pc_l
= fls(interface
->ring_feature
[RING_F_QOS
].mask
);
849 /* configure DGLORT mapping for RSS/DCB */
850 dglort
.idx
= fm10k_dglort_pf_rss
;
851 if (interface
->l2_accel
)
852 dglort
.shared_l
= fls(interface
->l2_accel
->size
);
853 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
857 * fm10k_configure_rx - Configure Receive Unit after Reset
858 * @interface: board private structure
860 * Configure the Rx unit of the MAC after a reset.
862 static void fm10k_configure_rx(struct fm10k_intfc
*interface
)
866 /* Configure SWPRI to PC map */
867 fm10k_configure_swpri_map(interface
);
869 /* Configure RSS and DGLORT map */
870 fm10k_configure_dglort(interface
);
872 /* Setup the HW Rx Head and Tail descriptor pointers */
873 for (i
= 0; i
< interface
->num_rx_queues
; i
++)
874 fm10k_configure_rx_ring(interface
, interface
->rx_ring
[i
]);
876 /* possible poll here to verify that Rx rings are now enabled */
879 static void fm10k_napi_enable_all(struct fm10k_intfc
*interface
)
881 struct fm10k_q_vector
*q_vector
;
884 for (q_idx
= 0; q_idx
< interface
->num_q_vectors
; q_idx
++) {
885 q_vector
= interface
->q_vector
[q_idx
];
886 napi_enable(&q_vector
->napi
);
890 static irqreturn_t
fm10k_msix_clean_rings(int __always_unused irq
, void *data
)
892 struct fm10k_q_vector
*q_vector
= data
;
894 if (q_vector
->rx
.count
|| q_vector
->tx
.count
)
895 napi_schedule_irqoff(&q_vector
->napi
);
900 static irqreturn_t
fm10k_msix_mbx_vf(int __always_unused irq
, void *data
)
902 struct fm10k_intfc
*interface
= data
;
903 struct fm10k_hw
*hw
= &interface
->hw
;
904 struct fm10k_mbx_info
*mbx
= &hw
->mbx
;
906 /* re-enable mailbox interrupt and indicate 20us delay */
907 fm10k_write_reg(hw
, FM10K_VFITR(FM10K_MBX_VECTOR
),
908 (FM10K_MBX_INT_DELAY
>> hw
->mac
.itr_scale
) |
911 /* service upstream mailbox */
912 if (fm10k_mbx_trylock(interface
)) {
913 mbx
->ops
.process(hw
, mbx
);
914 fm10k_mbx_unlock(interface
);
917 hw
->mac
.get_host_state
= true;
918 fm10k_service_event_schedule(interface
);
923 #ifdef CONFIG_NET_POLL_CONTROLLER
925 * fm10k_netpoll - A Polling 'interrupt' handler
926 * @netdev: network interface device structure
928 * This is used by netconsole to send skbs without having to re-enable
929 * interrupts. It's not called while the normal interrupt routine is executing.
931 void fm10k_netpoll(struct net_device
*netdev
)
933 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
936 /* if interface is down do nothing */
937 if (test_bit(__FM10K_DOWN
, &interface
->state
))
940 for (i
= 0; i
< interface
->num_q_vectors
; i
++)
941 fm10k_msix_clean_rings(0, interface
->q_vector
[i
]);
945 #define FM10K_ERR_MSG(type) case (type): error = #type; break
946 static void fm10k_handle_fault(struct fm10k_intfc
*interface
, int type
,
947 struct fm10k_fault
*fault
)
949 struct pci_dev
*pdev
= interface
->pdev
;
950 struct fm10k_hw
*hw
= &interface
->hw
;
951 struct fm10k_iov_data
*iov_data
= interface
->iov_data
;
955 case FM10K_PCA_FAULT
:
956 switch (fault
->type
) {
958 error
= "Unknown PCA error";
960 FM10K_ERR_MSG(PCA_NO_FAULT
);
961 FM10K_ERR_MSG(PCA_UNMAPPED_ADDR
);
962 FM10K_ERR_MSG(PCA_BAD_QACCESS_PF
);
963 FM10K_ERR_MSG(PCA_BAD_QACCESS_VF
);
964 FM10K_ERR_MSG(PCA_MALICIOUS_REQ
);
965 FM10K_ERR_MSG(PCA_POISONED_TLP
);
966 FM10K_ERR_MSG(PCA_TLP_ABORT
);
969 case FM10K_THI_FAULT
:
970 switch (fault
->type
) {
972 error
= "Unknown THI error";
974 FM10K_ERR_MSG(THI_NO_FAULT
);
975 FM10K_ERR_MSG(THI_MAL_DIS_Q_FAULT
);
978 case FM10K_FUM_FAULT
:
979 switch (fault
->type
) {
981 error
= "Unknown FUM error";
983 FM10K_ERR_MSG(FUM_NO_FAULT
);
984 FM10K_ERR_MSG(FUM_UNMAPPED_ADDR
);
985 FM10K_ERR_MSG(FUM_BAD_VF_QACCESS
);
986 FM10K_ERR_MSG(FUM_ADD_DECODE_ERR
);
987 FM10K_ERR_MSG(FUM_RO_ERROR
);
988 FM10K_ERR_MSG(FUM_QPRC_CRC_ERROR
);
989 FM10K_ERR_MSG(FUM_CSR_TIMEOUT
);
990 FM10K_ERR_MSG(FUM_INVALID_TYPE
);
991 FM10K_ERR_MSG(FUM_INVALID_LENGTH
);
992 FM10K_ERR_MSG(FUM_INVALID_BE
);
993 FM10K_ERR_MSG(FUM_INVALID_ALIGN
);
997 error
= "Undocumented fault";
1001 dev_warn(&pdev
->dev
,
1002 "%s Address: 0x%llx SpecInfo: 0x%x Func: %02x.%0x\n",
1003 error
, fault
->address
, fault
->specinfo
,
1004 PCI_SLOT(fault
->func
), PCI_FUNC(fault
->func
));
1006 /* For VF faults, clear out the respective LPORT, reset the queue
1007 * resources, and then reconnect to the mailbox. This allows the
1008 * VF in question to resume behavior. For transient faults that are
1009 * the result of non-malicious behavior this will log the fault and
1010 * allow the VF to resume functionality. Obviously for malicious VFs
1011 * they will be able to attempt malicious behavior again. In this
1012 * case, the system administrator will need to step in and manually
1013 * remove or disable the VF in question.
1015 if (fault
->func
&& iov_data
) {
1016 int vf
= fault
->func
- 1;
1017 struct fm10k_vf_info
*vf_info
= &iov_data
->vf_info
[vf
];
1019 hw
->iov
.ops
.reset_lport(hw
, vf_info
);
1020 hw
->iov
.ops
.reset_resources(hw
, vf_info
);
1022 /* reset_lport disables the VF, so re-enable it */
1023 hw
->iov
.ops
.set_lport(hw
, vf_info
, vf
,
1024 FM10K_VF_FLAG_MULTI_CAPABLE
);
1026 /* reset_resources will disconnect from the mbx */
1027 vf_info
->mbx
.ops
.connect(hw
, &vf_info
->mbx
);
1031 static void fm10k_report_fault(struct fm10k_intfc
*interface
, u32 eicr
)
1033 struct fm10k_hw
*hw
= &interface
->hw
;
1034 struct fm10k_fault fault
= { 0 };
1037 for (eicr
&= FM10K_EICR_FAULT_MASK
, type
= FM10K_PCA_FAULT
;
1039 eicr
>>= 1, type
+= FM10K_FAULT_SIZE
) {
1040 /* only check if there is an error reported */
1044 /* retrieve fault info */
1045 err
= hw
->mac
.ops
.get_fault(hw
, type
, &fault
);
1047 dev_err(&interface
->pdev
->dev
,
1048 "error reading fault\n");
1052 fm10k_handle_fault(interface
, type
, &fault
);
1056 static void fm10k_reset_drop_on_empty(struct fm10k_intfc
*interface
, u32 eicr
)
1058 struct fm10k_hw
*hw
= &interface
->hw
;
1059 const u32 rxdctl
= FM10K_RXDCTL_WRITE_BACK_MIN_DELAY
;
1063 if (!(eicr
& FM10K_EICR_MAXHOLDTIME
))
1066 maxholdq
= fm10k_read_reg(hw
, FM10K_MAXHOLDQ(7));
1068 fm10k_write_reg(hw
, FM10K_MAXHOLDQ(7), maxholdq
);
1070 if (maxholdq
& BIT(31)) {
1071 if (q
< FM10K_MAX_QUEUES_PF
) {
1072 interface
->rx_overrun_pf
++;
1073 fm10k_write_reg(hw
, FM10K_RXDCTL(q
), rxdctl
);
1075 interface
->rx_overrun_vf
++;
1089 maxholdq
= fm10k_read_reg(hw
, FM10K_MAXHOLDQ(q
/ 32));
1091 fm10k_write_reg(hw
, FM10K_MAXHOLDQ(q
/ 32), maxholdq
);
1095 static irqreturn_t
fm10k_msix_mbx_pf(int __always_unused irq
, void *data
)
1097 struct fm10k_intfc
*interface
= data
;
1098 struct fm10k_hw
*hw
= &interface
->hw
;
1099 struct fm10k_mbx_info
*mbx
= &hw
->mbx
;
1102 /* unmask any set bits related to this interrupt */
1103 eicr
= fm10k_read_reg(hw
, FM10K_EICR
);
1104 fm10k_write_reg(hw
, FM10K_EICR
, eicr
& (FM10K_EICR_MAILBOX
|
1105 FM10K_EICR_SWITCHREADY
|
1106 FM10K_EICR_SWITCHNOTREADY
));
1108 /* report any faults found to the message log */
1109 fm10k_report_fault(interface
, eicr
);
1111 /* reset any queues disabled due to receiver overrun */
1112 fm10k_reset_drop_on_empty(interface
, eicr
);
1114 /* service mailboxes */
1115 if (fm10k_mbx_trylock(interface
)) {
1116 mbx
->ops
.process(hw
, mbx
);
1117 /* handle VFLRE events */
1118 fm10k_iov_event(interface
);
1119 fm10k_mbx_unlock(interface
);
1122 /* if switch toggled state we should reset GLORTs */
1123 if (eicr
& FM10K_EICR_SWITCHNOTREADY
) {
1124 /* force link down for at least 4 seconds */
1125 interface
->link_down_event
= jiffies
+ (4 * HZ
);
1126 set_bit(__FM10K_LINK_DOWN
, &interface
->state
);
1128 /* reset dglort_map back to no config */
1129 hw
->mac
.dglort_map
= FM10K_DGLORTMAP_NONE
;
1132 /* we should validate host state after interrupt event */
1133 hw
->mac
.get_host_state
= true;
1135 /* validate host state, and handle VF mailboxes in the service task */
1136 fm10k_service_event_schedule(interface
);
1138 /* re-enable mailbox interrupt and indicate 20us delay */
1139 fm10k_write_reg(hw
, FM10K_ITR(FM10K_MBX_VECTOR
),
1140 (FM10K_MBX_INT_DELAY
>> hw
->mac
.itr_scale
) |
1146 void fm10k_mbx_free_irq(struct fm10k_intfc
*interface
)
1148 struct fm10k_hw
*hw
= &interface
->hw
;
1149 struct msix_entry
*entry
;
1152 /* no mailbox IRQ to free if MSI-X is not enabled */
1153 if (!interface
->msix_entries
)
1156 entry
= &interface
->msix_entries
[FM10K_MBX_VECTOR
];
1158 /* disconnect the mailbox */
1159 hw
->mbx
.ops
.disconnect(hw
, &hw
->mbx
);
1161 /* disable Mailbox cause */
1162 if (hw
->mac
.type
== fm10k_mac_pf
) {
1163 fm10k_write_reg(hw
, FM10K_EIMR
,
1164 FM10K_EIMR_DISABLE(PCA_FAULT
) |
1165 FM10K_EIMR_DISABLE(FUM_FAULT
) |
1166 FM10K_EIMR_DISABLE(MAILBOX
) |
1167 FM10K_EIMR_DISABLE(SWITCHREADY
) |
1168 FM10K_EIMR_DISABLE(SWITCHNOTREADY
) |
1169 FM10K_EIMR_DISABLE(SRAMERROR
) |
1170 FM10K_EIMR_DISABLE(VFLR
) |
1171 FM10K_EIMR_DISABLE(MAXHOLDTIME
));
1172 itr_reg
= FM10K_ITR(FM10K_MBX_VECTOR
);
1174 itr_reg
= FM10K_VFITR(FM10K_MBX_VECTOR
);
1177 fm10k_write_reg(hw
, itr_reg
, FM10K_ITR_MASK_SET
);
1179 free_irq(entry
->vector
, interface
);
1182 static s32
fm10k_mbx_mac_addr(struct fm10k_hw
*hw
, u32
**results
,
1183 struct fm10k_mbx_info
*mbx
)
1185 bool vlan_override
= hw
->mac
.vlan_override
;
1186 u16 default_vid
= hw
->mac
.default_vid
;
1187 struct fm10k_intfc
*interface
;
1190 err
= fm10k_msg_mac_vlan_vf(hw
, results
, mbx
);
1194 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1196 /* MAC was changed so we need reset */
1197 if (is_valid_ether_addr(hw
->mac
.perm_addr
) &&
1198 !ether_addr_equal(hw
->mac
.perm_addr
, hw
->mac
.addr
))
1199 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1201 /* VLAN override was changed, or default VLAN changed */
1202 if ((vlan_override
!= hw
->mac
.vlan_override
) ||
1203 (default_vid
!= hw
->mac
.default_vid
))
1204 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1209 /* generic error handler for mailbox issues */
1210 static s32
fm10k_mbx_error(struct fm10k_hw
*hw
, u32
**results
,
1211 struct fm10k_mbx_info __always_unused
*mbx
)
1213 struct fm10k_intfc
*interface
;
1214 struct pci_dev
*pdev
;
1216 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1217 pdev
= interface
->pdev
;
1219 dev_err(&pdev
->dev
, "Unknown message ID %u\n",
1220 **results
& FM10K_TLV_ID_MASK
);
1225 static const struct fm10k_msg_data vf_mbx_data
[] = {
1226 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test
),
1227 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_mbx_mac_addr
),
1228 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf
),
1229 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error
),
1232 static int fm10k_mbx_request_irq_vf(struct fm10k_intfc
*interface
)
1234 struct msix_entry
*entry
= &interface
->msix_entries
[FM10K_MBX_VECTOR
];
1235 struct net_device
*dev
= interface
->netdev
;
1236 struct fm10k_hw
*hw
= &interface
->hw
;
1239 /* Use timer0 for interrupt moderation on the mailbox */
1240 u32 itr
= entry
->entry
| FM10K_INT_MAP_TIMER0
;
1242 /* register mailbox handlers */
1243 err
= hw
->mbx
.ops
.register_handlers(&hw
->mbx
, vf_mbx_data
);
1247 /* request the IRQ */
1248 err
= request_irq(entry
->vector
, fm10k_msix_mbx_vf
, 0,
1249 dev
->name
, interface
);
1251 netif_err(interface
, probe
, dev
,
1252 "request_irq for msix_mbx failed: %d\n", err
);
1256 /* map all of the interrupt sources */
1257 fm10k_write_reg(hw
, FM10K_VFINT_MAP
, itr
);
1259 /* enable interrupt */
1260 fm10k_write_reg(hw
, FM10K_VFITR(entry
->entry
), FM10K_ITR_ENABLE
);
1265 static s32
fm10k_lport_map(struct fm10k_hw
*hw
, u32
**results
,
1266 struct fm10k_mbx_info
*mbx
)
1268 struct fm10k_intfc
*interface
;
1269 u32 dglort_map
= hw
->mac
.dglort_map
;
1272 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1274 err
= fm10k_msg_err_pf(hw
, results
, mbx
);
1275 if (!err
&& hw
->swapi
.status
) {
1276 /* force link down for a reasonable delay */
1277 interface
->link_down_event
= jiffies
+ (2 * HZ
);
1278 set_bit(__FM10K_LINK_DOWN
, &interface
->state
);
1280 /* reset dglort_map back to no config */
1281 hw
->mac
.dglort_map
= FM10K_DGLORTMAP_NONE
;
1283 fm10k_service_event_schedule(interface
);
1285 /* prevent overloading kernel message buffer */
1286 if (interface
->lport_map_failed
)
1289 interface
->lport_map_failed
= true;
1291 if (hw
->swapi
.status
== FM10K_MSG_ERR_PEP_NOT_SCHEDULED
)
1292 dev_warn(&interface
->pdev
->dev
,
1293 "cannot obtain link because the host interface is configured for a PCIe host interface bandwidth of zero\n");
1294 dev_warn(&interface
->pdev
->dev
,
1295 "request logical port map failed: %d\n",
1301 err
= fm10k_msg_lport_map_pf(hw
, results
, mbx
);
1305 interface
->lport_map_failed
= false;
1307 /* we need to reset if port count was just updated */
1308 if (dglort_map
!= hw
->mac
.dglort_map
)
1309 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1314 static s32
fm10k_update_pvid(struct fm10k_hw
*hw
, u32
**results
,
1315 struct fm10k_mbx_info __always_unused
*mbx
)
1317 struct fm10k_intfc
*interface
;
1322 err
= fm10k_tlv_attr_get_u32(results
[FM10K_PF_ATTR_ID_UPDATE_PVID
],
1327 /* extract values from the pvid update */
1328 glort
= FM10K_MSG_HDR_FIELD_GET(pvid_update
, UPDATE_PVID_GLORT
);
1329 pvid
= FM10K_MSG_HDR_FIELD_GET(pvid_update
, UPDATE_PVID_PVID
);
1331 /* if glort is not valid return error */
1332 if (!fm10k_glort_valid_pf(hw
, glort
))
1333 return FM10K_ERR_PARAM
;
1335 /* verify VLAN ID is valid */
1336 if (pvid
>= FM10K_VLAN_TABLE_VID_MAX
)
1337 return FM10K_ERR_PARAM
;
1339 interface
= container_of(hw
, struct fm10k_intfc
, hw
);
1341 /* check to see if this belongs to one of the VFs */
1342 err
= fm10k_iov_update_pvid(interface
, glort
, pvid
);
1346 /* we need to reset if default VLAN was just updated */
1347 if (pvid
!= hw
->mac
.default_vid
)
1348 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
1350 hw
->mac
.default_vid
= pvid
;
1355 static const struct fm10k_msg_data pf_mbx_data
[] = {
1356 FM10K_PF_MSG_ERR_HANDLER(XCAST_MODES
, fm10k_msg_err_pf
),
1357 FM10K_PF_MSG_ERR_HANDLER(UPDATE_MAC_FWD_RULE
, fm10k_msg_err_pf
),
1358 FM10K_PF_MSG_LPORT_MAP_HANDLER(fm10k_lport_map
),
1359 FM10K_PF_MSG_ERR_HANDLER(LPORT_CREATE
, fm10k_msg_err_pf
),
1360 FM10K_PF_MSG_ERR_HANDLER(LPORT_DELETE
, fm10k_msg_err_pf
),
1361 FM10K_PF_MSG_UPDATE_PVID_HANDLER(fm10k_update_pvid
),
1362 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error
),
1365 static int fm10k_mbx_request_irq_pf(struct fm10k_intfc
*interface
)
1367 struct msix_entry
*entry
= &interface
->msix_entries
[FM10K_MBX_VECTOR
];
1368 struct net_device
*dev
= interface
->netdev
;
1369 struct fm10k_hw
*hw
= &interface
->hw
;
1372 /* Use timer0 for interrupt moderation on the mailbox */
1373 u32 mbx_itr
= entry
->entry
| FM10K_INT_MAP_TIMER0
;
1374 u32 other_itr
= entry
->entry
| FM10K_INT_MAP_IMMEDIATE
;
1376 /* register mailbox handlers */
1377 err
= hw
->mbx
.ops
.register_handlers(&hw
->mbx
, pf_mbx_data
);
1381 /* request the IRQ */
1382 err
= request_irq(entry
->vector
, fm10k_msix_mbx_pf
, 0,
1383 dev
->name
, interface
);
1385 netif_err(interface
, probe
, dev
,
1386 "request_irq for msix_mbx failed: %d\n", err
);
1390 /* Enable interrupts w/ no moderation for "other" interrupts */
1391 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_pcie_fault
), other_itr
);
1392 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_switch_up_down
), other_itr
);
1393 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_sram
), other_itr
);
1394 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_max_hold_time
), other_itr
);
1395 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_vflr
), other_itr
);
1397 /* Enable interrupts w/ moderation for mailbox */
1398 fm10k_write_reg(hw
, FM10K_INT_MAP(fm10k_int_mailbox
), mbx_itr
);
1400 /* Enable individual interrupt causes */
1401 fm10k_write_reg(hw
, FM10K_EIMR
, FM10K_EIMR_ENABLE(PCA_FAULT
) |
1402 FM10K_EIMR_ENABLE(FUM_FAULT
) |
1403 FM10K_EIMR_ENABLE(MAILBOX
) |
1404 FM10K_EIMR_ENABLE(SWITCHREADY
) |
1405 FM10K_EIMR_ENABLE(SWITCHNOTREADY
) |
1406 FM10K_EIMR_ENABLE(SRAMERROR
) |
1407 FM10K_EIMR_ENABLE(VFLR
) |
1408 FM10K_EIMR_ENABLE(MAXHOLDTIME
));
1410 /* enable interrupt */
1411 fm10k_write_reg(hw
, FM10K_ITR(entry
->entry
), FM10K_ITR_ENABLE
);
1416 int fm10k_mbx_request_irq(struct fm10k_intfc
*interface
)
1418 struct fm10k_hw
*hw
= &interface
->hw
;
1421 /* enable Mailbox cause */
1422 if (hw
->mac
.type
== fm10k_mac_pf
)
1423 err
= fm10k_mbx_request_irq_pf(interface
);
1425 err
= fm10k_mbx_request_irq_vf(interface
);
1429 /* connect mailbox */
1430 err
= hw
->mbx
.ops
.connect(hw
, &hw
->mbx
);
1432 /* if the mailbox failed to connect, then free IRQ */
1434 fm10k_mbx_free_irq(interface
);
1440 * fm10k_qv_free_irq - release interrupts associated with queue vectors
1441 * @interface: board private structure
1443 * Release all interrupts associated with this interface
1445 void fm10k_qv_free_irq(struct fm10k_intfc
*interface
)
1447 int vector
= interface
->num_q_vectors
;
1448 struct fm10k_hw
*hw
= &interface
->hw
;
1449 struct msix_entry
*entry
;
1451 entry
= &interface
->msix_entries
[NON_Q_VECTORS(hw
) + vector
];
1454 struct fm10k_q_vector
*q_vector
;
1458 q_vector
= interface
->q_vector
[vector
];
1460 if (!q_vector
->tx
.count
&& !q_vector
->rx
.count
)
1463 /* clear the affinity_mask in the IRQ descriptor */
1464 irq_set_affinity_hint(entry
->vector
, NULL
);
1466 /* disable interrupts */
1467 writel(FM10K_ITR_MASK_SET
, q_vector
->itr
);
1469 free_irq(entry
->vector
, q_vector
);
1474 * fm10k_qv_request_irq - initialize interrupts for queue vectors
1475 * @interface: board private structure
1477 * Attempts to configure interrupts using the best available
1478 * capabilities of the hardware and kernel.
1480 int fm10k_qv_request_irq(struct fm10k_intfc
*interface
)
1482 struct net_device
*dev
= interface
->netdev
;
1483 struct fm10k_hw
*hw
= &interface
->hw
;
1484 struct msix_entry
*entry
;
1488 entry
= &interface
->msix_entries
[NON_Q_VECTORS(hw
)];
1490 for (vector
= 0; vector
< interface
->num_q_vectors
; vector
++) {
1491 struct fm10k_q_vector
*q_vector
= interface
->q_vector
[vector
];
1493 /* name the vector */
1494 if (q_vector
->tx
.count
&& q_vector
->rx
.count
) {
1495 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1496 "%s-TxRx-%d", dev
->name
, ri
++);
1498 } else if (q_vector
->rx
.count
) {
1499 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1500 "%s-rx-%d", dev
->name
, ri
++);
1501 } else if (q_vector
->tx
.count
) {
1502 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
1503 "%s-tx-%d", dev
->name
, ti
++);
1505 /* skip this unused q_vector */
1509 /* Assign ITR register to q_vector */
1510 q_vector
->itr
= (hw
->mac
.type
== fm10k_mac_pf
) ?
1511 &interface
->uc_addr
[FM10K_ITR(entry
->entry
)] :
1512 &interface
->uc_addr
[FM10K_VFITR(entry
->entry
)];
1514 /* request the IRQ */
1515 err
= request_irq(entry
->vector
, &fm10k_msix_clean_rings
, 0,
1516 q_vector
->name
, q_vector
);
1518 netif_err(interface
, probe
, dev
,
1519 "request_irq failed for MSIX interrupt Error: %d\n",
1524 /* assign the mask for this irq */
1525 irq_set_affinity_hint(entry
->vector
, &q_vector
->affinity_mask
);
1527 /* Enable q_vector */
1528 writel(FM10K_ITR_ENABLE
, q_vector
->itr
);
1536 /* wind through the ring freeing all entries and vectors */
1538 struct fm10k_q_vector
*q_vector
;
1542 q_vector
= interface
->q_vector
[vector
];
1544 if (!q_vector
->tx
.count
&& !q_vector
->rx
.count
)
1547 /* clear the affinity_mask in the IRQ descriptor */
1548 irq_set_affinity_hint(entry
->vector
, NULL
);
1550 /* disable interrupts */
1551 writel(FM10K_ITR_MASK_SET
, q_vector
->itr
);
1553 free_irq(entry
->vector
, q_vector
);
1559 void fm10k_up(struct fm10k_intfc
*interface
)
1561 struct fm10k_hw
*hw
= &interface
->hw
;
1563 /* Enable Tx/Rx DMA */
1564 hw
->mac
.ops
.start_hw(hw
);
1566 /* configure Tx descriptor rings */
1567 fm10k_configure_tx(interface
);
1569 /* configure Rx descriptor rings */
1570 fm10k_configure_rx(interface
);
1572 /* configure interrupts */
1573 hw
->mac
.ops
.update_int_moderator(hw
);
1575 /* clear down bit to indicate we are ready to go */
1576 clear_bit(__FM10K_DOWN
, &interface
->state
);
1578 /* enable polling cleanups */
1579 fm10k_napi_enable_all(interface
);
1581 /* re-establish Rx filters */
1582 fm10k_restore_rx_state(interface
);
1584 /* enable transmits */
1585 netif_tx_start_all_queues(interface
->netdev
);
1587 /* kick off the service timer now */
1588 hw
->mac
.get_host_state
= true;
1589 mod_timer(&interface
->service_timer
, jiffies
);
1592 static void fm10k_napi_disable_all(struct fm10k_intfc
*interface
)
1594 struct fm10k_q_vector
*q_vector
;
1597 for (q_idx
= 0; q_idx
< interface
->num_q_vectors
; q_idx
++) {
1598 q_vector
= interface
->q_vector
[q_idx
];
1599 napi_disable(&q_vector
->napi
);
1603 void fm10k_down(struct fm10k_intfc
*interface
)
1605 struct net_device
*netdev
= interface
->netdev
;
1606 struct fm10k_hw
*hw
= &interface
->hw
;
1609 /* signal that we are down to the interrupt handler and service task */
1610 if (test_and_set_bit(__FM10K_DOWN
, &interface
->state
))
1613 /* call carrier off first to avoid false dev_watchdog timeouts */
1614 netif_carrier_off(netdev
);
1616 /* disable transmits */
1617 netif_tx_stop_all_queues(netdev
);
1618 netif_tx_disable(netdev
);
1620 /* reset Rx filters */
1621 fm10k_reset_rx_state(interface
);
1623 /* allow 10ms for device to quiesce */
1624 usleep_range(10000, 20000);
1626 /* disable polling routines */
1627 fm10k_napi_disable_all(interface
);
1629 /* capture stats one last time before stopping interface */
1630 fm10k_update_stats(interface
);
1632 /* Disable DMA engine for Tx/Rx */
1633 err
= hw
->mac
.ops
.stop_hw(hw
);
1635 dev_err(&interface
->pdev
->dev
, "stop_hw failed: %d\n", err
);
1637 /* free any buffers still on the rings */
1638 fm10k_clean_all_tx_rings(interface
);
1639 fm10k_clean_all_rx_rings(interface
);
1643 * fm10k_sw_init - Initialize general software structures
1644 * @interface: host interface private structure to initialize
1646 * fm10k_sw_init initializes the interface private data structure.
1647 * Fields are initialized based on PCI device information and
1648 * OS network device settings (MTU size).
1650 static int fm10k_sw_init(struct fm10k_intfc
*interface
,
1651 const struct pci_device_id
*ent
)
1653 const struct fm10k_info
*fi
= fm10k_info_tbl
[ent
->driver_data
];
1654 struct fm10k_hw
*hw
= &interface
->hw
;
1655 struct pci_dev
*pdev
= interface
->pdev
;
1656 struct net_device
*netdev
= interface
->netdev
;
1657 u32 rss_key
[FM10K_RSSRK_SIZE
];
1661 /* initialize back pointer */
1662 hw
->back
= interface
;
1663 hw
->hw_addr
= interface
->uc_addr
;
1665 /* PCI config space info */
1666 hw
->vendor_id
= pdev
->vendor
;
1667 hw
->device_id
= pdev
->device
;
1668 hw
->revision_id
= pdev
->revision
;
1669 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1670 hw
->subsystem_device_id
= pdev
->subsystem_device
;
1673 memcpy(&hw
->mac
.ops
, fi
->mac_ops
, sizeof(hw
->mac
.ops
));
1674 hw
->mac
.type
= fi
->mac
;
1676 /* Setup IOV handlers */
1678 memcpy(&hw
->iov
.ops
, fi
->iov_ops
, sizeof(hw
->iov
.ops
));
1680 /* Set common capability flags and settings */
1681 rss
= min_t(int, FM10K_MAX_RSS_INDICES
, num_online_cpus());
1682 interface
->ring_feature
[RING_F_RSS
].limit
= rss
;
1683 fi
->get_invariants(hw
);
1685 /* pick up the PCIe bus settings for reporting later */
1686 if (hw
->mac
.ops
.get_bus_info
)
1687 hw
->mac
.ops
.get_bus_info(hw
);
1689 /* limit the usable DMA range */
1690 if (hw
->mac
.ops
.set_dma_mask
)
1691 hw
->mac
.ops
.set_dma_mask(hw
, dma_get_mask(&pdev
->dev
));
1693 /* update netdev with DMA restrictions */
1694 if (dma_get_mask(&pdev
->dev
) > DMA_BIT_MASK(32)) {
1695 netdev
->features
|= NETIF_F_HIGHDMA
;
1696 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
1699 /* delay any future reset requests */
1700 interface
->last_reset
= jiffies
+ (10 * HZ
);
1702 /* reset and initialize the hardware so it is in a known state */
1703 err
= hw
->mac
.ops
.reset_hw(hw
);
1705 dev_err(&pdev
->dev
, "reset_hw failed: %d\n", err
);
1709 err
= hw
->mac
.ops
.init_hw(hw
);
1711 dev_err(&pdev
->dev
, "init_hw failed: %d\n", err
);
1715 /* initialize hardware statistics */
1716 hw
->mac
.ops
.update_hw_stats(hw
, &interface
->stats
);
1718 /* Set upper limit on IOV VFs that can be allocated */
1719 pci_sriov_set_totalvfs(pdev
, hw
->iov
.total_vfs
);
1721 /* Start with random Ethernet address */
1722 eth_random_addr(hw
->mac
.addr
);
1724 /* Initialize MAC address from hardware */
1725 err
= hw
->mac
.ops
.read_mac_addr(hw
);
1727 dev_warn(&pdev
->dev
,
1728 "Failed to obtain MAC address defaulting to random\n");
1729 /* tag address assignment as random */
1730 netdev
->addr_assign_type
|= NET_ADDR_RANDOM
;
1733 ether_addr_copy(netdev
->dev_addr
, hw
->mac
.addr
);
1734 ether_addr_copy(netdev
->perm_addr
, hw
->mac
.addr
);
1736 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1737 dev_err(&pdev
->dev
, "Invalid MAC Address\n");
1741 /* initialize DCBNL interface */
1742 fm10k_dcbnl_set_ops(netdev
);
1744 /* set default ring sizes */
1745 interface
->tx_ring_count
= FM10K_DEFAULT_TXD
;
1746 interface
->rx_ring_count
= FM10K_DEFAULT_RXD
;
1748 /* set default interrupt moderation */
1749 interface
->tx_itr
= FM10K_TX_ITR_DEFAULT
;
1750 interface
->rx_itr
= FM10K_ITR_ADAPTIVE
| FM10K_RX_ITR_DEFAULT
;
1752 /* initialize vxlan_port list */
1753 INIT_LIST_HEAD(&interface
->vxlan_port
);
1755 netdev_rss_key_fill(rss_key
, sizeof(rss_key
));
1756 memcpy(interface
->rssrk
, rss_key
, sizeof(rss_key
));
1758 /* Start off interface as being down */
1759 set_bit(__FM10K_DOWN
, &interface
->state
);
1764 static void fm10k_slot_warn(struct fm10k_intfc
*interface
)
1766 enum pcie_link_width width
= PCIE_LNK_WIDTH_UNKNOWN
;
1767 enum pci_bus_speed speed
= PCI_SPEED_UNKNOWN
;
1768 struct fm10k_hw
*hw
= &interface
->hw
;
1769 int max_gts
= 0, expected_gts
= 0;
1771 if (pcie_get_minimum_link(interface
->pdev
, &speed
, &width
) ||
1772 speed
== PCI_SPEED_UNKNOWN
|| width
== PCIE_LNK_WIDTH_UNKNOWN
) {
1773 dev_warn(&interface
->pdev
->dev
,
1774 "Unable to determine PCI Express bandwidth.\n");
1779 case PCIE_SPEED_2_5GT
:
1780 /* 8b/10b encoding reduces max throughput by 20% */
1781 max_gts
= 2 * width
;
1783 case PCIE_SPEED_5_0GT
:
1784 /* 8b/10b encoding reduces max throughput by 20% */
1785 max_gts
= 4 * width
;
1787 case PCIE_SPEED_8_0GT
:
1788 /* 128b/130b encoding has less than 2% impact on throughput */
1789 max_gts
= 8 * width
;
1792 dev_warn(&interface
->pdev
->dev
,
1793 "Unable to determine PCI Express bandwidth.\n");
1797 dev_info(&interface
->pdev
->dev
,
1798 "PCI Express bandwidth of %dGT/s available\n",
1800 dev_info(&interface
->pdev
->dev
,
1801 "(Speed:%s, Width: x%d, Encoding Loss:%s, Payload:%s)\n",
1802 (speed
== PCIE_SPEED_8_0GT
? "8.0GT/s" :
1803 speed
== PCIE_SPEED_5_0GT
? "5.0GT/s" :
1804 speed
== PCIE_SPEED_2_5GT
? "2.5GT/s" :
1807 (speed
== PCIE_SPEED_2_5GT
? "20%" :
1808 speed
== PCIE_SPEED_5_0GT
? "20%" :
1809 speed
== PCIE_SPEED_8_0GT
? "<2%" :
1811 (hw
->bus
.payload
== fm10k_bus_payload_128
? "128B" :
1812 hw
->bus
.payload
== fm10k_bus_payload_256
? "256B" :
1813 hw
->bus
.payload
== fm10k_bus_payload_512
? "512B" :
1816 switch (hw
->bus_caps
.speed
) {
1817 case fm10k_bus_speed_2500
:
1818 /* 8b/10b encoding reduces max throughput by 20% */
1819 expected_gts
= 2 * hw
->bus_caps
.width
;
1821 case fm10k_bus_speed_5000
:
1822 /* 8b/10b encoding reduces max throughput by 20% */
1823 expected_gts
= 4 * hw
->bus_caps
.width
;
1825 case fm10k_bus_speed_8000
:
1826 /* 128b/130b encoding has less than 2% impact on throughput */
1827 expected_gts
= 8 * hw
->bus_caps
.width
;
1830 dev_warn(&interface
->pdev
->dev
,
1831 "Unable to determine expected PCI Express bandwidth.\n");
1835 if (max_gts
>= expected_gts
)
1838 dev_warn(&interface
->pdev
->dev
,
1839 "This device requires %dGT/s of bandwidth for optimal performance.\n",
1841 dev_warn(&interface
->pdev
->dev
,
1842 "A %sslot with x%d lanes is suggested.\n",
1843 (hw
->bus_caps
.speed
== fm10k_bus_speed_2500
? "2.5GT/s " :
1844 hw
->bus_caps
.speed
== fm10k_bus_speed_5000
? "5.0GT/s " :
1845 hw
->bus_caps
.speed
== fm10k_bus_speed_8000
? "8.0GT/s " : ""),
1846 hw
->bus_caps
.width
);
1850 * fm10k_probe - Device Initialization Routine
1851 * @pdev: PCI device information struct
1852 * @ent: entry in fm10k_pci_tbl
1854 * Returns 0 on success, negative on failure
1856 * fm10k_probe initializes an interface identified by a pci_dev structure.
1857 * The OS initialization, configuring of the interface private structure,
1858 * and a hardware reset occur.
1860 static int fm10k_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
1862 struct net_device
*netdev
;
1863 struct fm10k_intfc
*interface
;
1866 err
= pci_enable_device_mem(pdev
);
1870 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(48));
1872 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
1875 "DMA configuration failed: %d\n", err
);
1879 err
= pci_request_selected_regions(pdev
,
1880 pci_select_bars(pdev
,
1885 "pci_request_selected_regions failed: %d\n", err
);
1889 pci_enable_pcie_error_reporting(pdev
);
1891 pci_set_master(pdev
);
1892 pci_save_state(pdev
);
1894 netdev
= fm10k_alloc_netdev(fm10k_info_tbl
[ent
->driver_data
]);
1897 goto err_alloc_netdev
;
1900 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
1902 interface
= netdev_priv(netdev
);
1903 pci_set_drvdata(pdev
, interface
);
1905 interface
->netdev
= netdev
;
1906 interface
->pdev
= pdev
;
1908 interface
->uc_addr
= ioremap(pci_resource_start(pdev
, 0),
1909 FM10K_UC_ADDR_SIZE
);
1910 if (!interface
->uc_addr
) {
1915 err
= fm10k_sw_init(interface
, ent
);
1919 /* enable debugfs support */
1920 fm10k_dbg_intfc_init(interface
);
1922 err
= fm10k_init_queueing_scheme(interface
);
1926 /* the mbx interrupt might attempt to schedule the service task, so we
1927 * must ensure it is disabled since we haven't yet requested the timer
1930 set_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
1932 err
= fm10k_mbx_request_irq(interface
);
1934 goto err_mbx_interrupt
;
1936 /* final check of hardware state before registering the interface */
1937 err
= fm10k_hw_ready(interface
);
1941 err
= register_netdev(netdev
);
1945 /* carrier off reporting is important to ethtool even BEFORE open */
1946 netif_carrier_off(netdev
);
1948 /* stop all the transmit queues from transmitting until link is up */
1949 netif_tx_stop_all_queues(netdev
);
1951 /* Initialize service timer and service task late in order to avoid
1954 setup_timer(&interface
->service_timer
, &fm10k_service_timer
,
1955 (unsigned long)interface
);
1956 INIT_WORK(&interface
->service_task
, fm10k_service_task
);
1958 /* kick off service timer now, even when interface is down */
1959 mod_timer(&interface
->service_timer
, (HZ
* 2) + jiffies
);
1961 /* print warning for non-optimal configurations */
1962 fm10k_slot_warn(interface
);
1964 /* report MAC address for logging */
1965 dev_info(&pdev
->dev
, "%pM\n", netdev
->dev_addr
);
1967 /* enable SR-IOV after registering netdev to enforce PF/VF ordering */
1968 fm10k_iov_configure(pdev
, 0);
1970 /* clear the service task disable bit to allow service task to start */
1971 clear_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
1976 fm10k_mbx_free_irq(interface
);
1978 fm10k_clear_queueing_scheme(interface
);
1980 if (interface
->sw_addr
)
1981 iounmap(interface
->sw_addr
);
1982 iounmap(interface
->uc_addr
);
1984 free_netdev(netdev
);
1986 pci_release_selected_regions(pdev
,
1987 pci_select_bars(pdev
, IORESOURCE_MEM
));
1990 pci_disable_device(pdev
);
1995 * fm10k_remove - Device Removal Routine
1996 * @pdev: PCI device information struct
1998 * fm10k_remove is called by the PCI subsystem to alert the driver
1999 * that it should release a PCI device. The could be caused by a
2000 * Hot-Plug event, or because the driver is going to be removed from
2003 static void fm10k_remove(struct pci_dev
*pdev
)
2005 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2006 struct net_device
*netdev
= interface
->netdev
;
2008 del_timer_sync(&interface
->service_timer
);
2010 set_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
2011 cancel_work_sync(&interface
->service_task
);
2013 /* free netdev, this may bounce the interrupts due to setup_tc */
2014 if (netdev
->reg_state
== NETREG_REGISTERED
)
2015 unregister_netdev(netdev
);
2018 fm10k_iov_disable(pdev
);
2020 /* disable mailbox interrupt */
2021 fm10k_mbx_free_irq(interface
);
2023 /* free interrupts */
2024 fm10k_clear_queueing_scheme(interface
);
2026 /* remove any debugfs interfaces */
2027 fm10k_dbg_intfc_exit(interface
);
2029 if (interface
->sw_addr
)
2030 iounmap(interface
->sw_addr
);
2031 iounmap(interface
->uc_addr
);
2033 free_netdev(netdev
);
2035 pci_release_selected_regions(pdev
,
2036 pci_select_bars(pdev
, IORESOURCE_MEM
));
2038 pci_disable_pcie_error_reporting(pdev
);
2040 pci_disable_device(pdev
);
2045 * fm10k_resume - Restore device to pre-sleep state
2046 * @pdev: PCI device information struct
2048 * fm10k_resume is called after the system has powered back up from a sleep
2049 * state and is ready to resume operation. This function is meant to restore
2050 * the device back to its pre-sleep state.
2052 static int fm10k_resume(struct pci_dev
*pdev
)
2054 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2055 struct net_device
*netdev
= interface
->netdev
;
2056 struct fm10k_hw
*hw
= &interface
->hw
;
2059 pci_set_power_state(pdev
, PCI_D0
);
2060 pci_restore_state(pdev
);
2062 /* pci_restore_state clears dev->state_saved so call
2063 * pci_save_state to restore it.
2065 pci_save_state(pdev
);
2067 err
= pci_enable_device_mem(pdev
);
2069 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend\n");
2072 pci_set_master(pdev
);
2074 pci_wake_from_d3(pdev
, false);
2076 /* refresh hw_addr in case it was dropped */
2077 hw
->hw_addr
= interface
->uc_addr
;
2079 /* reset hardware to known state */
2080 err
= hw
->mac
.ops
.init_hw(&interface
->hw
);
2082 dev_err(&pdev
->dev
, "init_hw failed: %d\n", err
);
2086 /* reset statistics starting values */
2087 hw
->mac
.ops
.rebind_hw_stats(hw
, &interface
->stats
);
2091 err
= fm10k_init_queueing_scheme(interface
);
2093 goto err_queueing_scheme
;
2095 err
= fm10k_mbx_request_irq(interface
);
2099 err
= fm10k_hw_ready(interface
);
2103 err
= netif_running(netdev
) ? fm10k_open(netdev
) : 0;
2109 /* assume host is not ready, to prevent race with watchdog in case we
2110 * actually don't have connection to the switch
2112 interface
->host_ready
= false;
2113 fm10k_watchdog_host_not_ready(interface
);
2115 /* clear the service task disable bit to allow service task to start */
2116 clear_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
2117 fm10k_service_event_schedule(interface
);
2119 /* restore SR-IOV interface */
2120 fm10k_iov_resume(pdev
);
2122 netif_device_attach(netdev
);
2126 fm10k_mbx_free_irq(interface
);
2128 fm10k_clear_queueing_scheme(interface
);
2129 err_queueing_scheme
:
2136 * fm10k_suspend - Prepare the device for a system sleep state
2137 * @pdev: PCI device information struct
2139 * fm10k_suspend is meant to shutdown the device prior to the system entering
2140 * a sleep state. The fm10k hardware does not support wake on lan so the
2141 * driver simply needs to shut down the device so it is in a low power state.
2143 static int fm10k_suspend(struct pci_dev
*pdev
,
2144 pm_message_t __always_unused state
)
2146 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2147 struct net_device
*netdev
= interface
->netdev
;
2150 netif_device_detach(netdev
);
2152 fm10k_iov_suspend(pdev
);
2154 /* the watchdog tasks may read registers, which will appear like a
2155 * surprise-remove event once the PCI device is disabled. This will
2156 * cause us to close the netdevice, so we don't retain the open/closed
2157 * state post-resume. Prevent this by disabling the service task while
2158 * suspended, until we actually resume.
2160 set_bit(__FM10K_SERVICE_DISABLE
, &interface
->state
);
2161 cancel_work_sync(&interface
->service_task
);
2165 if (netif_running(netdev
))
2166 fm10k_close(netdev
);
2168 fm10k_mbx_free_irq(interface
);
2170 fm10k_clear_queueing_scheme(interface
);
2174 err
= pci_save_state(pdev
);
2178 pci_disable_device(pdev
);
2179 pci_wake_from_d3(pdev
, false);
2180 pci_set_power_state(pdev
, PCI_D3hot
);
2185 #endif /* CONFIG_PM */
2187 * fm10k_io_error_detected - called when PCI error is detected
2188 * @pdev: Pointer to PCI device
2189 * @state: The current pci connection state
2191 * This function is called after a PCI bus error affecting
2192 * this device has been detected.
2194 static pci_ers_result_t
fm10k_io_error_detected(struct pci_dev
*pdev
,
2195 pci_channel_state_t state
)
2197 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2198 struct net_device
*netdev
= interface
->netdev
;
2200 netif_device_detach(netdev
);
2202 if (state
== pci_channel_io_perm_failure
)
2203 return PCI_ERS_RESULT_DISCONNECT
;
2207 if (netif_running(netdev
))
2208 fm10k_close(netdev
);
2210 fm10k_mbx_free_irq(interface
);
2212 /* free interrupts */
2213 fm10k_clear_queueing_scheme(interface
);
2217 /* Request a slot reset. */
2218 return PCI_ERS_RESULT_NEED_RESET
;
2222 * fm10k_io_slot_reset - called after the pci bus has been reset.
2223 * @pdev: Pointer to PCI device
2225 * Restart the card from scratch, as if from a cold-boot.
2227 static pci_ers_result_t
fm10k_io_slot_reset(struct pci_dev
*pdev
)
2229 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2230 pci_ers_result_t result
;
2232 if (pci_enable_device_mem(pdev
)) {
2234 "Cannot re-enable PCI device after reset.\n");
2235 result
= PCI_ERS_RESULT_DISCONNECT
;
2237 pci_set_master(pdev
);
2238 pci_restore_state(pdev
);
2240 /* After second error pci->state_saved is false, this
2241 * resets it so EEH doesn't break.
2243 pci_save_state(pdev
);
2245 pci_wake_from_d3(pdev
, false);
2247 /* refresh hw_addr in case it was dropped */
2248 interface
->hw
.hw_addr
= interface
->uc_addr
;
2250 interface
->flags
|= FM10K_FLAG_RESET_REQUESTED
;
2251 fm10k_service_event_schedule(interface
);
2253 result
= PCI_ERS_RESULT_RECOVERED
;
2256 pci_cleanup_aer_uncorrect_error_status(pdev
);
2262 * fm10k_io_resume - called when traffic can start flowing again.
2263 * @pdev: Pointer to PCI device
2265 * This callback is called when the error recovery driver tells us that
2266 * its OK to resume normal operation.
2268 static void fm10k_io_resume(struct pci_dev
*pdev
)
2270 struct fm10k_intfc
*interface
= pci_get_drvdata(pdev
);
2271 struct net_device
*netdev
= interface
->netdev
;
2272 struct fm10k_hw
*hw
= &interface
->hw
;
2275 /* reset hardware to known state */
2276 err
= hw
->mac
.ops
.init_hw(&interface
->hw
);
2278 dev_err(&pdev
->dev
, "init_hw failed: %d\n", err
);
2282 /* reset statistics starting values */
2283 hw
->mac
.ops
.rebind_hw_stats(hw
, &interface
->stats
);
2287 err
= fm10k_init_queueing_scheme(interface
);
2289 dev_err(&interface
->pdev
->dev
,
2290 "init_queueing_scheme failed: %d\n", err
);
2294 /* reassociate interrupts */
2295 fm10k_mbx_request_irq(interface
);
2298 if (netif_running(netdev
))
2299 err
= fm10k_open(netdev
);
2302 /* final check of hardware state before registering the interface */
2303 err
= err
? : fm10k_hw_ready(interface
);
2306 netif_device_attach(netdev
);
2312 static const struct pci_error_handlers fm10k_err_handler
= {
2313 .error_detected
= fm10k_io_error_detected
,
2314 .slot_reset
= fm10k_io_slot_reset
,
2315 .resume
= fm10k_io_resume
,
2318 static struct pci_driver fm10k_driver
= {
2319 .name
= fm10k_driver_name
,
2320 .id_table
= fm10k_pci_tbl
,
2321 .probe
= fm10k_probe
,
2322 .remove
= fm10k_remove
,
2324 .suspend
= fm10k_suspend
,
2325 .resume
= fm10k_resume
,
2327 .sriov_configure
= fm10k_iov_configure
,
2328 .err_handler
= &fm10k_err_handler
2332 * fm10k_register_pci_driver - register driver interface
2334 * This function is called on module load in order to register the driver.
2336 int fm10k_register_pci_driver(void)
2338 return pci_register_driver(&fm10k_driver
);
2342 * fm10k_unregister_pci_driver - unregister driver interface
2344 * This function is called on module unload in order to remove the driver.
2346 void fm10k_unregister_pci_driver(void)
2348 pci_unregister_driver(&fm10k_driver
);