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b3890e30 | 1 | /* Intel Ethernet Switch Host Interface Driver |
97c71e3c | 2 | * Copyright(c) 2013 - 2015 Intel Corporation. |
b3890e30 AD |
3 | * |
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. | |
7 | * | |
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 | |
11 | * more details. | |
12 | * | |
13 | * The full GNU General Public License is included in this distribution in | |
14 | * the file called "COPYING". | |
15 | * | |
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 | |
19 | */ | |
20 | ||
21 | #include <linux/module.h> | |
19ae1b3f | 22 | #include <linux/aer.h> |
b3890e30 AD |
23 | |
24 | #include "fm10k.h" | |
25 | ||
0e7b3644 AD |
26 | static const struct fm10k_info *fm10k_info_tbl[] = { |
27 | [fm10k_device_pf] = &fm10k_pf_info, | |
5cb8db4a | 28 | [fm10k_device_vf] = &fm10k_vf_info, |
0e7b3644 AD |
29 | }; |
30 | ||
b3890e30 AD |
31 | /** |
32 | * fm10k_pci_tbl - PCI Device ID Table | |
33 | * | |
34 | * Wildcard entries (PCI_ANY_ID) should come last | |
35 | * Last entry must be all 0s | |
36 | * | |
37 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
38 | * Class, Class Mask, private data (not used) } | |
39 | */ | |
40 | static const struct pci_device_id fm10k_pci_tbl[] = { | |
0e7b3644 | 41 | { PCI_VDEVICE(INTEL, FM10K_DEV_ID_PF), fm10k_device_pf }, |
5cb8db4a | 42 | { PCI_VDEVICE(INTEL, FM10K_DEV_ID_VF), fm10k_device_vf }, |
b3890e30 AD |
43 | /* required last entry */ |
44 | { 0, } | |
45 | }; | |
46 | MODULE_DEVICE_TABLE(pci, fm10k_pci_tbl); | |
47 | ||
04a5aefb AD |
48 | u16 fm10k_read_pci_cfg_word(struct fm10k_hw *hw, u32 reg) |
49 | { | |
50 | struct fm10k_intfc *interface = hw->back; | |
51 | u16 value = 0; | |
52 | ||
53 | if (FM10K_REMOVED(hw->hw_addr)) | |
54 | return ~value; | |
55 | ||
56 | pci_read_config_word(interface->pdev, reg, &value); | |
57 | if (value == 0xFFFF) | |
58 | fm10k_write_flush(hw); | |
59 | ||
60 | return value; | |
61 | } | |
62 | ||
63 | u32 fm10k_read_reg(struct fm10k_hw *hw, int reg) | |
64 | { | |
65 | u32 __iomem *hw_addr = ACCESS_ONCE(hw->hw_addr); | |
66 | u32 value = 0; | |
67 | ||
68 | if (FM10K_REMOVED(hw_addr)) | |
69 | return ~value; | |
70 | ||
71 | value = readl(&hw_addr[reg]); | |
0e7b3644 AD |
72 | if (!(~value) && (!reg || !(~readl(hw_addr)))) { |
73 | struct fm10k_intfc *interface = hw->back; | |
74 | struct net_device *netdev = interface->netdev; | |
75 | ||
04a5aefb | 76 | hw->hw_addr = NULL; |
0e7b3644 AD |
77 | netif_device_detach(netdev); |
78 | netdev_err(netdev, "PCIe link lost, device now detached\n"); | |
79 | } | |
04a5aefb AD |
80 | |
81 | return value; | |
82 | } | |
83 | ||
0e7b3644 AD |
84 | static int fm10k_hw_ready(struct fm10k_intfc *interface) |
85 | { | |
86 | struct fm10k_hw *hw = &interface->hw; | |
87 | ||
88 | fm10k_write_flush(hw); | |
89 | ||
90 | return FM10K_REMOVED(hw->hw_addr) ? -ENODEV : 0; | |
91 | } | |
92 | ||
b7d8514c AD |
93 | void fm10k_service_event_schedule(struct fm10k_intfc *interface) |
94 | { | |
95 | if (!test_bit(__FM10K_SERVICE_DISABLE, &interface->state) && | |
96 | !test_and_set_bit(__FM10K_SERVICE_SCHED, &interface->state)) | |
b382bb1b | 97 | queue_work(fm10k_workqueue, &interface->service_task); |
b7d8514c AD |
98 | } |
99 | ||
100 | static void fm10k_service_event_complete(struct fm10k_intfc *interface) | |
101 | { | |
102 | BUG_ON(!test_bit(__FM10K_SERVICE_SCHED, &interface->state)); | |
103 | ||
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); | |
107 | } | |
108 | ||
109 | /** | |
110 | * fm10k_service_timer - Timer Call-back | |
111 | * @data: pointer to interface cast into an unsigned long | |
112 | **/ | |
113 | static void fm10k_service_timer(unsigned long data) | |
114 | { | |
115 | struct fm10k_intfc *interface = (struct fm10k_intfc *)data; | |
116 | ||
117 | /* Reset the timer */ | |
118 | mod_timer(&interface->service_timer, (HZ * 2) + jiffies); | |
119 | ||
120 | fm10k_service_event_schedule(interface); | |
121 | } | |
122 | ||
123 | static void fm10k_detach_subtask(struct fm10k_intfc *interface) | |
124 | { | |
125 | struct net_device *netdev = interface->netdev; | |
126 | ||
127 | /* do nothing if device is still present or hw_addr is set */ | |
128 | if (netif_device_present(netdev) || interface->hw.hw_addr) | |
129 | return; | |
130 | ||
131 | rtnl_lock(); | |
132 | ||
133 | if (netif_running(netdev)) | |
134 | dev_close(netdev); | |
135 | ||
136 | rtnl_unlock(); | |
137 | } | |
138 | ||
139 | static void fm10k_reinit(struct fm10k_intfc *interface) | |
140 | { | |
141 | struct net_device *netdev = interface->netdev; | |
142 | struct fm10k_hw *hw = &interface->hw; | |
143 | int err; | |
144 | ||
145 | WARN_ON(in_interrupt()); | |
146 | ||
147 | /* put off any impending NetWatchDogTimeout */ | |
148 | netdev->trans_start = jiffies; | |
149 | ||
150 | while (test_and_set_bit(__FM10K_RESETTING, &interface->state)) | |
151 | usleep_range(1000, 2000); | |
152 | ||
153 | rtnl_lock(); | |
154 | ||
883a9ccb AD |
155 | fm10k_iov_suspend(interface->pdev); |
156 | ||
b7d8514c AD |
157 | if (netif_running(netdev)) |
158 | fm10k_close(netdev); | |
159 | ||
160 | fm10k_mbx_free_irq(interface); | |
161 | ||
162 | /* delay any future reset requests */ | |
163 | interface->last_reset = jiffies + (10 * HZ); | |
164 | ||
165 | /* reset and initialize the hardware so it is in a known state */ | |
166 | err = hw->mac.ops.reset_hw(hw) ? : hw->mac.ops.init_hw(hw); | |
167 | if (err) | |
168 | dev_err(&interface->pdev->dev, "init_hw failed: %d\n", err); | |
169 | ||
170 | /* reassociate interrupts */ | |
171 | fm10k_mbx_request_irq(interface); | |
172 | ||
bdc7f590 JK |
173 | /* update hardware address for VFs if perm_addr has changed */ |
174 | if (hw->mac.type == fm10k_mac_vf) { | |
175 | if (is_valid_ether_addr(hw->mac.perm_addr)) { | |
176 | ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); | |
177 | ether_addr_copy(netdev->perm_addr, hw->mac.perm_addr); | |
178 | ether_addr_copy(netdev->dev_addr, hw->mac.perm_addr); | |
179 | netdev->addr_assign_type &= ~NET_ADDR_RANDOM; | |
180 | } | |
181 | ||
182 | if (hw->mac.vlan_override) | |
183 | netdev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; | |
184 | else | |
185 | netdev->features |= NETIF_F_HW_VLAN_CTAG_RX; | |
186 | } | |
187 | ||
a211e013 AD |
188 | /* reset clock */ |
189 | fm10k_ts_reset(interface); | |
190 | ||
b7d8514c AD |
191 | if (netif_running(netdev)) |
192 | fm10k_open(netdev); | |
193 | ||
883a9ccb AD |
194 | fm10k_iov_resume(interface->pdev); |
195 | ||
b7d8514c AD |
196 | rtnl_unlock(); |
197 | ||
198 | clear_bit(__FM10K_RESETTING, &interface->state); | |
199 | } | |
200 | ||
201 | static void fm10k_reset_subtask(struct fm10k_intfc *interface) | |
202 | { | |
203 | if (!(interface->flags & FM10K_FLAG_RESET_REQUESTED)) | |
204 | return; | |
205 | ||
206 | interface->flags &= ~FM10K_FLAG_RESET_REQUESTED; | |
207 | ||
208 | netdev_err(interface->netdev, "Reset interface\n"); | |
b7d8514c AD |
209 | |
210 | fm10k_reinit(interface); | |
211 | } | |
212 | ||
213 | /** | |
214 | * fm10k_configure_swpri_map - Configure Receive SWPRI to PC mapping | |
215 | * @interface: board private structure | |
216 | * | |
217 | * Configure the SWPRI to PC mapping for the port. | |
218 | **/ | |
219 | static void fm10k_configure_swpri_map(struct fm10k_intfc *interface) | |
220 | { | |
221 | struct net_device *netdev = interface->netdev; | |
222 | struct fm10k_hw *hw = &interface->hw; | |
223 | int i; | |
224 | ||
225 | /* clear flag indicating update is needed */ | |
226 | interface->flags &= ~FM10K_FLAG_SWPRI_CONFIG; | |
227 | ||
228 | /* these registers are only available on the PF */ | |
229 | if (hw->mac.type != fm10k_mac_pf) | |
230 | return; | |
231 | ||
232 | /* configure SWPRI to PC map */ | |
233 | for (i = 0; i < FM10K_SWPRI_MAX; i++) | |
234 | fm10k_write_reg(hw, FM10K_SWPRI_MAP(i), | |
235 | netdev_get_prio_tc_map(netdev, i)); | |
236 | } | |
237 | ||
238 | /** | |
239 | * fm10k_watchdog_update_host_state - Update the link status based on host. | |
240 | * @interface: board private structure | |
241 | **/ | |
242 | static void fm10k_watchdog_update_host_state(struct fm10k_intfc *interface) | |
243 | { | |
244 | struct fm10k_hw *hw = &interface->hw; | |
245 | s32 err; | |
246 | ||
247 | if (test_bit(__FM10K_LINK_DOWN, &interface->state)) { | |
248 | interface->host_ready = false; | |
249 | if (time_is_after_jiffies(interface->link_down_event)) | |
250 | return; | |
251 | clear_bit(__FM10K_LINK_DOWN, &interface->state); | |
252 | } | |
253 | ||
254 | if (interface->flags & FM10K_FLAG_SWPRI_CONFIG) { | |
255 | if (rtnl_trylock()) { | |
256 | fm10k_configure_swpri_map(interface); | |
257 | rtnl_unlock(); | |
258 | } | |
259 | } | |
260 | ||
261 | /* lock the mailbox for transmit and receive */ | |
262 | fm10k_mbx_lock(interface); | |
263 | ||
264 | err = hw->mac.ops.get_host_state(hw, &interface->host_ready); | |
265 | if (err && time_is_before_jiffies(interface->last_reset)) | |
266 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
267 | ||
268 | /* free the lock */ | |
269 | fm10k_mbx_unlock(interface); | |
270 | } | |
271 | ||
272 | /** | |
273 | * fm10k_mbx_subtask - Process upstream and downstream mailboxes | |
274 | * @interface: board private structure | |
275 | * | |
276 | * This function will process both the upstream and downstream mailboxes. | |
277 | * It is necessary for us to hold the rtnl_lock while doing this as the | |
278 | * mailbox accesses are protected by this lock. | |
279 | **/ | |
280 | static void fm10k_mbx_subtask(struct fm10k_intfc *interface) | |
281 | { | |
282 | /* process upstream mailbox and update device state */ | |
283 | fm10k_watchdog_update_host_state(interface); | |
883a9ccb AD |
284 | |
285 | /* process downstream mailboxes */ | |
286 | fm10k_iov_mbx(interface); | |
b7d8514c AD |
287 | } |
288 | ||
289 | /** | |
290 | * fm10k_watchdog_host_is_ready - Update netdev status based on host ready | |
291 | * @interface: board private structure | |
292 | **/ | |
293 | static void fm10k_watchdog_host_is_ready(struct fm10k_intfc *interface) | |
294 | { | |
295 | struct net_device *netdev = interface->netdev; | |
296 | ||
297 | /* only continue if link state is currently down */ | |
298 | if (netif_carrier_ok(netdev)) | |
299 | return; | |
300 | ||
301 | netif_info(interface, drv, netdev, "NIC Link is up\n"); | |
302 | ||
303 | netif_carrier_on(netdev); | |
304 | netif_tx_wake_all_queues(netdev); | |
305 | } | |
306 | ||
307 | /** | |
308 | * fm10k_watchdog_host_not_ready - Update netdev status based on host not ready | |
309 | * @interface: board private structure | |
310 | **/ | |
311 | static void fm10k_watchdog_host_not_ready(struct fm10k_intfc *interface) | |
312 | { | |
313 | struct net_device *netdev = interface->netdev; | |
314 | ||
315 | /* only continue if link state is currently up */ | |
316 | if (!netif_carrier_ok(netdev)) | |
317 | return; | |
318 | ||
319 | netif_info(interface, drv, netdev, "NIC Link is down\n"); | |
320 | ||
321 | netif_carrier_off(netdev); | |
322 | netif_tx_stop_all_queues(netdev); | |
323 | } | |
324 | ||
325 | /** | |
326 | * fm10k_update_stats - Update the board statistics counters. | |
327 | * @interface: board private structure | |
328 | **/ | |
329 | void fm10k_update_stats(struct fm10k_intfc *interface) | |
330 | { | |
331 | struct net_device_stats *net_stats = &interface->netdev->stats; | |
332 | struct fm10k_hw *hw = &interface->hw; | |
333 | u64 rx_errors = 0, rx_csum_errors = 0, tx_csum_errors = 0; | |
334 | u64 restart_queue = 0, tx_busy = 0, alloc_failed = 0; | |
335 | u64 rx_bytes_nic = 0, rx_pkts_nic = 0, rx_drops_nic = 0; | |
336 | u64 tx_bytes_nic = 0, tx_pkts_nic = 0; | |
337 | u64 bytes, pkts; | |
338 | int i; | |
339 | ||
340 | /* do not allow stats update via service task for next second */ | |
341 | interface->next_stats_update = jiffies + HZ; | |
342 | ||
343 | /* gather some stats to the interface struct that are per queue */ | |
344 | for (bytes = 0, pkts = 0, i = 0; i < interface->num_tx_queues; i++) { | |
345 | struct fm10k_ring *tx_ring = interface->tx_ring[i]; | |
346 | ||
347 | restart_queue += tx_ring->tx_stats.restart_queue; | |
348 | tx_busy += tx_ring->tx_stats.tx_busy; | |
349 | tx_csum_errors += tx_ring->tx_stats.csum_err; | |
350 | bytes += tx_ring->stats.bytes; | |
351 | pkts += tx_ring->stats.packets; | |
352 | } | |
353 | ||
354 | interface->restart_queue = restart_queue; | |
355 | interface->tx_busy = tx_busy; | |
356 | net_stats->tx_bytes = bytes; | |
357 | net_stats->tx_packets = pkts; | |
358 | interface->tx_csum_errors = tx_csum_errors; | |
359 | /* gather some stats to the interface struct that are per queue */ | |
360 | for (bytes = 0, pkts = 0, i = 0; i < interface->num_rx_queues; i++) { | |
361 | struct fm10k_ring *rx_ring = interface->rx_ring[i]; | |
362 | ||
363 | bytes += rx_ring->stats.bytes; | |
364 | pkts += rx_ring->stats.packets; | |
365 | alloc_failed += rx_ring->rx_stats.alloc_failed; | |
366 | rx_csum_errors += rx_ring->rx_stats.csum_err; | |
367 | rx_errors += rx_ring->rx_stats.errors; | |
368 | } | |
369 | ||
370 | net_stats->rx_bytes = bytes; | |
371 | net_stats->rx_packets = pkts; | |
372 | interface->alloc_failed = alloc_failed; | |
373 | interface->rx_csum_errors = rx_csum_errors; | |
b7d8514c AD |
374 | |
375 | hw->mac.ops.update_hw_stats(hw, &interface->stats); | |
376 | ||
c0e61781 | 377 | for (i = 0; i < hw->mac.max_queues; i++) { |
b7d8514c AD |
378 | struct fm10k_hw_stats_q *q = &interface->stats.q[i]; |
379 | ||
380 | tx_bytes_nic += q->tx_bytes.count; | |
381 | tx_pkts_nic += q->tx_packets.count; | |
382 | rx_bytes_nic += q->rx_bytes.count; | |
383 | rx_pkts_nic += q->rx_packets.count; | |
384 | rx_drops_nic += q->rx_drops.count; | |
385 | } | |
386 | ||
387 | interface->tx_bytes_nic = tx_bytes_nic; | |
388 | interface->tx_packets_nic = tx_pkts_nic; | |
389 | interface->rx_bytes_nic = rx_bytes_nic; | |
390 | interface->rx_packets_nic = rx_pkts_nic; | |
391 | interface->rx_drops_nic = rx_drops_nic; | |
392 | ||
393 | /* Fill out the OS statistics structure */ | |
97c71e3c | 394 | net_stats->rx_errors = rx_errors; |
b7d8514c AD |
395 | net_stats->rx_dropped = interface->stats.nodesc_drop.count; |
396 | } | |
397 | ||
398 | /** | |
399 | * fm10k_watchdog_flush_tx - flush queues on host not ready | |
400 | * @interface - pointer to the device interface structure | |
401 | **/ | |
402 | static void fm10k_watchdog_flush_tx(struct fm10k_intfc *interface) | |
403 | { | |
404 | int some_tx_pending = 0; | |
405 | int i; | |
406 | ||
407 | /* nothing to do if carrier is up */ | |
408 | if (netif_carrier_ok(interface->netdev)) | |
409 | return; | |
410 | ||
411 | for (i = 0; i < interface->num_tx_queues; i++) { | |
412 | struct fm10k_ring *tx_ring = interface->tx_ring[i]; | |
413 | ||
414 | if (tx_ring->next_to_use != tx_ring->next_to_clean) { | |
415 | some_tx_pending = 1; | |
416 | break; | |
417 | } | |
418 | } | |
419 | ||
420 | /* We've lost link, so the controller stops DMA, but we've got | |
421 | * queued Tx work that's never going to get done, so reset | |
422 | * controller to flush Tx. | |
423 | */ | |
424 | if (some_tx_pending) | |
425 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
426 | } | |
427 | ||
428 | /** | |
429 | * fm10k_watchdog_subtask - check and bring link up | |
430 | * @interface - pointer to the device interface structure | |
431 | **/ | |
432 | static void fm10k_watchdog_subtask(struct fm10k_intfc *interface) | |
433 | { | |
434 | /* if interface is down do nothing */ | |
435 | if (test_bit(__FM10K_DOWN, &interface->state) || | |
436 | test_bit(__FM10K_RESETTING, &interface->state)) | |
437 | return; | |
438 | ||
439 | if (interface->host_ready) | |
440 | fm10k_watchdog_host_is_ready(interface); | |
441 | else | |
442 | fm10k_watchdog_host_not_ready(interface); | |
443 | ||
444 | /* update stats only once every second */ | |
445 | if (time_is_before_jiffies(interface->next_stats_update)) | |
446 | fm10k_update_stats(interface); | |
447 | ||
448 | /* flush any uncompleted work */ | |
449 | fm10k_watchdog_flush_tx(interface); | |
450 | } | |
451 | ||
452 | /** | |
453 | * fm10k_check_hang_subtask - check for hung queues and dropped interrupts | |
454 | * @interface - pointer to the device interface structure | |
455 | * | |
456 | * This function serves two purposes. First it strobes the interrupt lines | |
457 | * in order to make certain interrupts are occurring. Secondly it sets the | |
458 | * bits needed to check for TX hangs. As a result we should immediately | |
459 | * determine if a hang has occurred. | |
460 | */ | |
461 | static void fm10k_check_hang_subtask(struct fm10k_intfc *interface) | |
462 | { | |
463 | int i; | |
464 | ||
465 | /* If we're down or resetting, just bail */ | |
466 | if (test_bit(__FM10K_DOWN, &interface->state) || | |
467 | test_bit(__FM10K_RESETTING, &interface->state)) | |
468 | return; | |
469 | ||
470 | /* rate limit tx hang checks to only once every 2 seconds */ | |
471 | if (time_is_after_eq_jiffies(interface->next_tx_hang_check)) | |
472 | return; | |
473 | interface->next_tx_hang_check = jiffies + (2 * HZ); | |
474 | ||
475 | if (netif_carrier_ok(interface->netdev)) { | |
476 | /* Force detection of hung controller */ | |
477 | for (i = 0; i < interface->num_tx_queues; i++) | |
478 | set_check_for_tx_hang(interface->tx_ring[i]); | |
479 | ||
480 | /* Rearm all in-use q_vectors for immediate firing */ | |
481 | for (i = 0; i < interface->num_q_vectors; i++) { | |
482 | struct fm10k_q_vector *qv = interface->q_vector[i]; | |
483 | ||
484 | if (!qv->tx.count && !qv->rx.count) | |
485 | continue; | |
486 | writel(FM10K_ITR_ENABLE | FM10K_ITR_PENDING2, qv->itr); | |
487 | } | |
488 | } | |
489 | } | |
490 | ||
491 | /** | |
492 | * fm10k_service_task - manages and runs subtasks | |
493 | * @work: pointer to work_struct containing our data | |
494 | **/ | |
495 | static void fm10k_service_task(struct work_struct *work) | |
496 | { | |
497 | struct fm10k_intfc *interface; | |
498 | ||
499 | interface = container_of(work, struct fm10k_intfc, service_task); | |
500 | ||
501 | /* tasks always capable of running, but must be rtnl protected */ | |
502 | fm10k_mbx_subtask(interface); | |
503 | fm10k_detach_subtask(interface); | |
504 | fm10k_reset_subtask(interface); | |
505 | ||
506 | /* tasks only run when interface is up */ | |
507 | fm10k_watchdog_subtask(interface); | |
508 | fm10k_check_hang_subtask(interface); | |
a211e013 | 509 | fm10k_ts_tx_subtask(interface); |
b7d8514c AD |
510 | |
511 | /* release lock on service events to allow scheduling next event */ | |
512 | fm10k_service_event_complete(interface); | |
513 | } | |
514 | ||
3abaae42 AD |
515 | /** |
516 | * fm10k_configure_tx_ring - Configure Tx ring after Reset | |
517 | * @interface: board private structure | |
518 | * @ring: structure containing ring specific data | |
519 | * | |
520 | * Configure the Tx descriptor ring after a reset. | |
521 | **/ | |
522 | static void fm10k_configure_tx_ring(struct fm10k_intfc *interface, | |
523 | struct fm10k_ring *ring) | |
524 | { | |
525 | struct fm10k_hw *hw = &interface->hw; | |
526 | u64 tdba = ring->dma; | |
527 | u32 size = ring->count * sizeof(struct fm10k_tx_desc); | |
528 | u32 txint = FM10K_INT_MAP_DISABLE; | |
529 | u32 txdctl = FM10K_TXDCTL_ENABLE | (1 << FM10K_TXDCTL_MAX_TIME_SHIFT); | |
530 | u8 reg_idx = ring->reg_idx; | |
531 | ||
532 | /* disable queue to avoid issues while updating state */ | |
533 | fm10k_write_reg(hw, FM10K_TXDCTL(reg_idx), 0); | |
534 | fm10k_write_flush(hw); | |
535 | ||
536 | /* possible poll here to verify ring resources have been cleaned */ | |
537 | ||
538 | /* set location and size for descriptor ring */ | |
539 | fm10k_write_reg(hw, FM10K_TDBAL(reg_idx), tdba & DMA_BIT_MASK(32)); | |
540 | fm10k_write_reg(hw, FM10K_TDBAH(reg_idx), tdba >> 32); | |
541 | fm10k_write_reg(hw, FM10K_TDLEN(reg_idx), size); | |
542 | ||
543 | /* reset head and tail pointers */ | |
544 | fm10k_write_reg(hw, FM10K_TDH(reg_idx), 0); | |
545 | fm10k_write_reg(hw, FM10K_TDT(reg_idx), 0); | |
546 | ||
547 | /* store tail pointer */ | |
548 | ring->tail = &interface->uc_addr[FM10K_TDT(reg_idx)]; | |
549 | ||
550 | /* reset ntu and ntc to place SW in sync with hardwdare */ | |
551 | ring->next_to_clean = 0; | |
552 | ring->next_to_use = 0; | |
553 | ||
554 | /* Map interrupt */ | |
555 | if (ring->q_vector) { | |
556 | txint = ring->q_vector->v_idx + NON_Q_VECTORS(hw); | |
557 | txint |= FM10K_INT_MAP_TIMER0; | |
558 | } | |
559 | ||
560 | fm10k_write_reg(hw, FM10K_TXINT(reg_idx), txint); | |
561 | ||
562 | /* enable use of FTAG bit in Tx descriptor, register is RO for VF */ | |
563 | fm10k_write_reg(hw, FM10K_PFVTCTL(reg_idx), | |
564 | FM10K_PFVTCTL_FTAG_DESC_ENABLE); | |
565 | ||
566 | /* enable queue */ | |
567 | fm10k_write_reg(hw, FM10K_TXDCTL(reg_idx), txdctl); | |
568 | } | |
569 | ||
570 | /** | |
571 | * fm10k_enable_tx_ring - Verify Tx ring is enabled after configuration | |
572 | * @interface: board private structure | |
573 | * @ring: structure containing ring specific data | |
574 | * | |
575 | * Verify the Tx descriptor ring is ready for transmit. | |
576 | **/ | |
577 | static void fm10k_enable_tx_ring(struct fm10k_intfc *interface, | |
578 | struct fm10k_ring *ring) | |
579 | { | |
580 | struct fm10k_hw *hw = &interface->hw; | |
581 | int wait_loop = 10; | |
582 | u32 txdctl; | |
583 | u8 reg_idx = ring->reg_idx; | |
584 | ||
585 | /* if we are already enabled just exit */ | |
586 | if (fm10k_read_reg(hw, FM10K_TXDCTL(reg_idx)) & FM10K_TXDCTL_ENABLE) | |
587 | return; | |
588 | ||
589 | /* poll to verify queue is enabled */ | |
590 | do { | |
591 | usleep_range(1000, 2000); | |
592 | txdctl = fm10k_read_reg(hw, FM10K_TXDCTL(reg_idx)); | |
593 | } while (!(txdctl & FM10K_TXDCTL_ENABLE) && --wait_loop); | |
594 | if (!wait_loop) | |
595 | netif_err(interface, drv, interface->netdev, | |
596 | "Could not enable Tx Queue %d\n", reg_idx); | |
597 | } | |
598 | ||
599 | /** | |
600 | * fm10k_configure_tx - Configure Transmit Unit after Reset | |
601 | * @interface: board private structure | |
602 | * | |
603 | * Configure the Tx unit of the MAC after a reset. | |
604 | **/ | |
605 | static void fm10k_configure_tx(struct fm10k_intfc *interface) | |
606 | { | |
607 | int i; | |
608 | ||
609 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
610 | for (i = 0; i < interface->num_tx_queues; i++) | |
611 | fm10k_configure_tx_ring(interface, interface->tx_ring[i]); | |
612 | ||
613 | /* poll here to verify that Tx rings are now enabled */ | |
614 | for (i = 0; i < interface->num_tx_queues; i++) | |
615 | fm10k_enable_tx_ring(interface, interface->tx_ring[i]); | |
616 | } | |
617 | ||
618 | /** | |
619 | * fm10k_configure_rx_ring - Configure Rx ring after Reset | |
620 | * @interface: board private structure | |
621 | * @ring: structure containing ring specific data | |
622 | * | |
623 | * Configure the Rx descriptor ring after a reset. | |
624 | **/ | |
625 | static void fm10k_configure_rx_ring(struct fm10k_intfc *interface, | |
626 | struct fm10k_ring *ring) | |
627 | { | |
628 | u64 rdba = ring->dma; | |
629 | struct fm10k_hw *hw = &interface->hw; | |
630 | u32 size = ring->count * sizeof(union fm10k_rx_desc); | |
631 | u32 rxqctl = FM10K_RXQCTL_ENABLE | FM10K_RXQCTL_PF; | |
632 | u32 rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; | |
633 | u32 srrctl = FM10K_SRRCTL_BUFFER_CHAINING_EN; | |
634 | u32 rxint = FM10K_INT_MAP_DISABLE; | |
635 | u8 rx_pause = interface->rx_pause; | |
636 | u8 reg_idx = ring->reg_idx; | |
637 | ||
638 | /* disable queue to avoid issues while updating state */ | |
639 | fm10k_write_reg(hw, FM10K_RXQCTL(reg_idx), 0); | |
640 | fm10k_write_flush(hw); | |
641 | ||
642 | /* possible poll here to verify ring resources have been cleaned */ | |
643 | ||
644 | /* set location and size for descriptor ring */ | |
645 | fm10k_write_reg(hw, FM10K_RDBAL(reg_idx), rdba & DMA_BIT_MASK(32)); | |
646 | fm10k_write_reg(hw, FM10K_RDBAH(reg_idx), rdba >> 32); | |
647 | fm10k_write_reg(hw, FM10K_RDLEN(reg_idx), size); | |
648 | ||
649 | /* reset head and tail pointers */ | |
650 | fm10k_write_reg(hw, FM10K_RDH(reg_idx), 0); | |
651 | fm10k_write_reg(hw, FM10K_RDT(reg_idx), 0); | |
652 | ||
653 | /* store tail pointer */ | |
654 | ring->tail = &interface->uc_addr[FM10K_RDT(reg_idx)]; | |
655 | ||
656 | /* reset ntu and ntc to place SW in sync with hardwdare */ | |
657 | ring->next_to_clean = 0; | |
658 | ring->next_to_use = 0; | |
659 | ring->next_to_alloc = 0; | |
660 | ||
661 | /* Configure the Rx buffer size for one buff without split */ | |
662 | srrctl |= FM10K_RX_BUFSZ >> FM10K_SRRCTL_BSIZEPKT_SHIFT; | |
663 | ||
eca32047 | 664 | /* Configure the Rx ring to suppress loopback packets */ |
3abaae42 AD |
665 | srrctl |= FM10K_SRRCTL_LOOPBACK_SUPPRESS; |
666 | fm10k_write_reg(hw, FM10K_SRRCTL(reg_idx), srrctl); | |
667 | ||
668 | /* Enable drop on empty */ | |
9f801abc | 669 | #ifdef CONFIG_DCB |
3abaae42 AD |
670 | if (interface->pfc_en) |
671 | rx_pause = interface->pfc_en; | |
672 | #endif | |
673 | if (!(rx_pause & (1 << ring->qos_pc))) | |
674 | rxdctl |= FM10K_RXDCTL_DROP_ON_EMPTY; | |
675 | ||
676 | fm10k_write_reg(hw, FM10K_RXDCTL(reg_idx), rxdctl); | |
677 | ||
678 | /* assign default VLAN to queue */ | |
679 | ring->vid = hw->mac.default_vid; | |
680 | ||
681 | /* Map interrupt */ | |
682 | if (ring->q_vector) { | |
683 | rxint = ring->q_vector->v_idx + NON_Q_VECTORS(hw); | |
684 | rxint |= FM10K_INT_MAP_TIMER1; | |
685 | } | |
686 | ||
687 | fm10k_write_reg(hw, FM10K_RXINT(reg_idx), rxint); | |
688 | ||
689 | /* enable queue */ | |
690 | fm10k_write_reg(hw, FM10K_RXQCTL(reg_idx), rxqctl); | |
b101c962 AD |
691 | |
692 | /* place buffers on ring for receive data */ | |
693 | fm10k_alloc_rx_buffers(ring, fm10k_desc_unused(ring)); | |
3abaae42 AD |
694 | } |
695 | ||
696 | /** | |
697 | * fm10k_update_rx_drop_en - Configures the drop enable bits for Rx rings | |
698 | * @interface: board private structure | |
699 | * | |
700 | * Configure the drop enable bits for the Rx rings. | |
701 | **/ | |
702 | void fm10k_update_rx_drop_en(struct fm10k_intfc *interface) | |
703 | { | |
704 | struct fm10k_hw *hw = &interface->hw; | |
705 | u8 rx_pause = interface->rx_pause; | |
706 | int i; | |
707 | ||
9f801abc | 708 | #ifdef CONFIG_DCB |
3abaae42 AD |
709 | if (interface->pfc_en) |
710 | rx_pause = interface->pfc_en; | |
711 | ||
712 | #endif | |
713 | for (i = 0; i < interface->num_rx_queues; i++) { | |
714 | struct fm10k_ring *ring = interface->rx_ring[i]; | |
715 | u32 rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; | |
716 | u8 reg_idx = ring->reg_idx; | |
717 | ||
718 | if (!(rx_pause & (1 << ring->qos_pc))) | |
719 | rxdctl |= FM10K_RXDCTL_DROP_ON_EMPTY; | |
720 | ||
721 | fm10k_write_reg(hw, FM10K_RXDCTL(reg_idx), rxdctl); | |
722 | } | |
723 | } | |
724 | ||
725 | /** | |
726 | * fm10k_configure_dglort - Configure Receive DGLORT after reset | |
727 | * @interface: board private structure | |
728 | * | |
729 | * Configure the DGLORT description and RSS tables. | |
730 | **/ | |
731 | static void fm10k_configure_dglort(struct fm10k_intfc *interface) | |
732 | { | |
733 | struct fm10k_dglort_cfg dglort = { 0 }; | |
734 | struct fm10k_hw *hw = &interface->hw; | |
735 | int i; | |
736 | u32 mrqc; | |
737 | ||
738 | /* Fill out hash function seeds */ | |
739 | for (i = 0; i < FM10K_RSSRK_SIZE; i++) | |
740 | fm10k_write_reg(hw, FM10K_RSSRK(0, i), interface->rssrk[i]); | |
741 | ||
742 | /* Write RETA table to hardware */ | |
743 | for (i = 0; i < FM10K_RETA_SIZE; i++) | |
744 | fm10k_write_reg(hw, FM10K_RETA(0, i), interface->reta[i]); | |
745 | ||
746 | /* Generate RSS hash based on packet types, TCP/UDP | |
747 | * port numbers and/or IPv4/v6 src and dst addresses | |
748 | */ | |
749 | mrqc = FM10K_MRQC_IPV4 | | |
750 | FM10K_MRQC_TCP_IPV4 | | |
751 | FM10K_MRQC_IPV6 | | |
752 | FM10K_MRQC_TCP_IPV6; | |
753 | ||
754 | if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP) | |
755 | mrqc |= FM10K_MRQC_UDP_IPV4; | |
756 | if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP) | |
757 | mrqc |= FM10K_MRQC_UDP_IPV6; | |
758 | ||
759 | fm10k_write_reg(hw, FM10K_MRQC(0), mrqc); | |
760 | ||
761 | /* configure default DGLORT mapping for RSS/DCB */ | |
762 | dglort.inner_rss = 1; | |
763 | dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); | |
764 | dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); | |
765 | hw->mac.ops.configure_dglort_map(hw, &dglort); | |
766 | ||
767 | /* assign GLORT per queue for queue mapped testing */ | |
768 | if (interface->glort_count > 64) { | |
769 | memset(&dglort, 0, sizeof(dglort)); | |
770 | dglort.inner_rss = 1; | |
771 | dglort.glort = interface->glort + 64; | |
772 | dglort.idx = fm10k_dglort_pf_queue; | |
773 | dglort.queue_l = fls(interface->num_rx_queues - 1); | |
774 | hw->mac.ops.configure_dglort_map(hw, &dglort); | |
775 | } | |
776 | ||
777 | /* assign glort value for RSS/DCB specific to this interface */ | |
778 | memset(&dglort, 0, sizeof(dglort)); | |
779 | dglort.inner_rss = 1; | |
780 | dglort.glort = interface->glort; | |
781 | dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); | |
782 | dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); | |
783 | /* configure DGLORT mapping for RSS/DCB */ | |
784 | dglort.idx = fm10k_dglort_pf_rss; | |
5cd5e2e9 AD |
785 | if (interface->l2_accel) |
786 | dglort.shared_l = fls(interface->l2_accel->size); | |
3abaae42 AD |
787 | hw->mac.ops.configure_dglort_map(hw, &dglort); |
788 | } | |
789 | ||
790 | /** | |
791 | * fm10k_configure_rx - Configure Receive Unit after Reset | |
792 | * @interface: board private structure | |
793 | * | |
794 | * Configure the Rx unit of the MAC after a reset. | |
795 | **/ | |
796 | static void fm10k_configure_rx(struct fm10k_intfc *interface) | |
797 | { | |
798 | int i; | |
799 | ||
800 | /* Configure SWPRI to PC map */ | |
801 | fm10k_configure_swpri_map(interface); | |
802 | ||
803 | /* Configure RSS and DGLORT map */ | |
804 | fm10k_configure_dglort(interface); | |
805 | ||
806 | /* Setup the HW Rx Head and Tail descriptor pointers */ | |
807 | for (i = 0; i < interface->num_rx_queues; i++) | |
808 | fm10k_configure_rx_ring(interface, interface->rx_ring[i]); | |
809 | ||
810 | /* possible poll here to verify that Rx rings are now enabled */ | |
811 | } | |
812 | ||
18283cad AD |
813 | static void fm10k_napi_enable_all(struct fm10k_intfc *interface) |
814 | { | |
815 | struct fm10k_q_vector *q_vector; | |
816 | int q_idx; | |
817 | ||
818 | for (q_idx = 0; q_idx < interface->num_q_vectors; q_idx++) { | |
819 | q_vector = interface->q_vector[q_idx]; | |
820 | napi_enable(&q_vector->napi); | |
821 | } | |
822 | } | |
823 | ||
de445199 | 824 | static irqreturn_t fm10k_msix_clean_rings(int __always_unused irq, void *data) |
18283cad AD |
825 | { |
826 | struct fm10k_q_vector *q_vector = data; | |
827 | ||
828 | if (q_vector->rx.count || q_vector->tx.count) | |
829 | napi_schedule(&q_vector->napi); | |
830 | ||
831 | return IRQ_HANDLED; | |
832 | } | |
833 | ||
de445199 | 834 | static irqreturn_t fm10k_msix_mbx_vf(int __always_unused irq, void *data) |
5cb8db4a AD |
835 | { |
836 | struct fm10k_intfc *interface = data; | |
837 | struct fm10k_hw *hw = &interface->hw; | |
838 | struct fm10k_mbx_info *mbx = &hw->mbx; | |
839 | ||
840 | /* re-enable mailbox interrupt and indicate 20us delay */ | |
841 | fm10k_write_reg(hw, FM10K_VFITR(FM10K_MBX_VECTOR), | |
842 | FM10K_ITR_ENABLE | FM10K_MBX_INT_DELAY); | |
843 | ||
844 | /* service upstream mailbox */ | |
845 | if (fm10k_mbx_trylock(interface)) { | |
846 | mbx->ops.process(hw, mbx); | |
847 | fm10k_mbx_unlock(interface); | |
848 | } | |
849 | ||
850 | hw->mac.get_host_state = 1; | |
851 | fm10k_service_event_schedule(interface); | |
852 | ||
853 | return IRQ_HANDLED; | |
854 | } | |
855 | ||
8b4a98c7 JK |
856 | #ifdef CONFIG_NET_POLL_CONTROLLER |
857 | /** | |
858 | * fm10k_netpoll - A Polling 'interrupt' handler | |
859 | * @netdev: network interface device structure | |
860 | * | |
861 | * This is used by netconsole to send skbs without having to re-enable | |
862 | * interrupts. It's not called while the normal interrupt routine is executing. | |
863 | **/ | |
864 | void fm10k_netpoll(struct net_device *netdev) | |
865 | { | |
866 | struct fm10k_intfc *interface = netdev_priv(netdev); | |
867 | int i; | |
868 | ||
869 | /* if interface is down do nothing */ | |
870 | if (test_bit(__FM10K_DOWN, &interface->state)) | |
871 | return; | |
872 | ||
873 | for (i = 0; i < interface->num_q_vectors; i++) | |
874 | fm10k_msix_clean_rings(0, interface->q_vector[i]); | |
875 | } | |
876 | ||
877 | #endif | |
18283cad AD |
878 | #define FM10K_ERR_MSG(type) case (type): error = #type; break |
879 | static void fm10k_print_fault(struct fm10k_intfc *interface, int type, | |
880 | struct fm10k_fault *fault) | |
881 | { | |
882 | struct pci_dev *pdev = interface->pdev; | |
883 | char *error; | |
884 | ||
885 | switch (type) { | |
886 | case FM10K_PCA_FAULT: | |
887 | switch (fault->type) { | |
888 | default: | |
889 | error = "Unknown PCA error"; | |
890 | break; | |
891 | FM10K_ERR_MSG(PCA_NO_FAULT); | |
892 | FM10K_ERR_MSG(PCA_UNMAPPED_ADDR); | |
893 | FM10K_ERR_MSG(PCA_BAD_QACCESS_PF); | |
894 | FM10K_ERR_MSG(PCA_BAD_QACCESS_VF); | |
895 | FM10K_ERR_MSG(PCA_MALICIOUS_REQ); | |
896 | FM10K_ERR_MSG(PCA_POISONED_TLP); | |
897 | FM10K_ERR_MSG(PCA_TLP_ABORT); | |
898 | } | |
899 | break; | |
900 | case FM10K_THI_FAULT: | |
901 | switch (fault->type) { | |
902 | default: | |
903 | error = "Unknown THI error"; | |
904 | break; | |
905 | FM10K_ERR_MSG(THI_NO_FAULT); | |
906 | FM10K_ERR_MSG(THI_MAL_DIS_Q_FAULT); | |
907 | } | |
908 | break; | |
909 | case FM10K_FUM_FAULT: | |
910 | switch (fault->type) { | |
911 | default: | |
912 | error = "Unknown FUM error"; | |
913 | break; | |
914 | FM10K_ERR_MSG(FUM_NO_FAULT); | |
915 | FM10K_ERR_MSG(FUM_UNMAPPED_ADDR); | |
916 | FM10K_ERR_MSG(FUM_BAD_VF_QACCESS); | |
917 | FM10K_ERR_MSG(FUM_ADD_DECODE_ERR); | |
918 | FM10K_ERR_MSG(FUM_RO_ERROR); | |
919 | FM10K_ERR_MSG(FUM_QPRC_CRC_ERROR); | |
920 | FM10K_ERR_MSG(FUM_CSR_TIMEOUT); | |
921 | FM10K_ERR_MSG(FUM_INVALID_TYPE); | |
922 | FM10K_ERR_MSG(FUM_INVALID_LENGTH); | |
923 | FM10K_ERR_MSG(FUM_INVALID_BE); | |
924 | FM10K_ERR_MSG(FUM_INVALID_ALIGN); | |
925 | } | |
926 | break; | |
927 | default: | |
928 | error = "Undocumented fault"; | |
929 | break; | |
930 | } | |
931 | ||
932 | dev_warn(&pdev->dev, | |
933 | "%s Address: 0x%llx SpecInfo: 0x%x Func: %02x.%0x\n", | |
934 | error, fault->address, fault->specinfo, | |
935 | PCI_SLOT(fault->func), PCI_FUNC(fault->func)); | |
936 | } | |
937 | ||
938 | static void fm10k_report_fault(struct fm10k_intfc *interface, u32 eicr) | |
939 | { | |
940 | struct fm10k_hw *hw = &interface->hw; | |
941 | struct fm10k_fault fault = { 0 }; | |
942 | int type, err; | |
943 | ||
944 | for (eicr &= FM10K_EICR_FAULT_MASK, type = FM10K_PCA_FAULT; | |
945 | eicr; | |
946 | eicr >>= 1, type += FM10K_FAULT_SIZE) { | |
947 | /* only check if there is an error reported */ | |
948 | if (!(eicr & 0x1)) | |
949 | continue; | |
950 | ||
951 | /* retrieve fault info */ | |
952 | err = hw->mac.ops.get_fault(hw, type, &fault); | |
953 | if (err) { | |
954 | dev_err(&interface->pdev->dev, | |
955 | "error reading fault\n"); | |
956 | continue; | |
957 | } | |
958 | ||
959 | fm10k_print_fault(interface, type, &fault); | |
960 | } | |
961 | } | |
962 | ||
963 | static void fm10k_reset_drop_on_empty(struct fm10k_intfc *interface, u32 eicr) | |
964 | { | |
965 | struct fm10k_hw *hw = &interface->hw; | |
966 | const u32 rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; | |
967 | u32 maxholdq; | |
968 | int q; | |
969 | ||
970 | if (!(eicr & FM10K_EICR_MAXHOLDTIME)) | |
971 | return; | |
972 | ||
973 | maxholdq = fm10k_read_reg(hw, FM10K_MAXHOLDQ(7)); | |
974 | if (maxholdq) | |
975 | fm10k_write_reg(hw, FM10K_MAXHOLDQ(7), maxholdq); | |
976 | for (q = 255;;) { | |
977 | if (maxholdq & (1 << 31)) { | |
978 | if (q < FM10K_MAX_QUEUES_PF) { | |
979 | interface->rx_overrun_pf++; | |
980 | fm10k_write_reg(hw, FM10K_RXDCTL(q), rxdctl); | |
981 | } else { | |
982 | interface->rx_overrun_vf++; | |
983 | } | |
984 | } | |
985 | ||
986 | maxholdq *= 2; | |
987 | if (!maxholdq) | |
988 | q &= ~(32 - 1); | |
989 | ||
990 | if (!q) | |
991 | break; | |
992 | ||
993 | if (q-- % 32) | |
994 | continue; | |
995 | ||
996 | maxholdq = fm10k_read_reg(hw, FM10K_MAXHOLDQ(q / 32)); | |
997 | if (maxholdq) | |
998 | fm10k_write_reg(hw, FM10K_MAXHOLDQ(q / 32), maxholdq); | |
999 | } | |
1000 | } | |
1001 | ||
de445199 | 1002 | static irqreturn_t fm10k_msix_mbx_pf(int __always_unused irq, void *data) |
18283cad AD |
1003 | { |
1004 | struct fm10k_intfc *interface = data; | |
1005 | struct fm10k_hw *hw = &interface->hw; | |
1006 | struct fm10k_mbx_info *mbx = &hw->mbx; | |
1007 | u32 eicr; | |
1008 | ||
1009 | /* unmask any set bits related to this interrupt */ | |
1010 | eicr = fm10k_read_reg(hw, FM10K_EICR); | |
1011 | fm10k_write_reg(hw, FM10K_EICR, eicr & (FM10K_EICR_MAILBOX | | |
1012 | FM10K_EICR_SWITCHREADY | | |
1013 | FM10K_EICR_SWITCHNOTREADY)); | |
1014 | ||
1015 | /* report any faults found to the message log */ | |
1016 | fm10k_report_fault(interface, eicr); | |
1017 | ||
1018 | /* reset any queues disabled due to receiver overrun */ | |
1019 | fm10k_reset_drop_on_empty(interface, eicr); | |
1020 | ||
1021 | /* service mailboxes */ | |
1022 | if (fm10k_mbx_trylock(interface)) { | |
1023 | mbx->ops.process(hw, mbx); | |
9de15bda | 1024 | /* handle VFLRE events */ |
883a9ccb | 1025 | fm10k_iov_event(interface); |
18283cad AD |
1026 | fm10k_mbx_unlock(interface); |
1027 | } | |
1028 | ||
b7d8514c AD |
1029 | /* if switch toggled state we should reset GLORTs */ |
1030 | if (eicr & FM10K_EICR_SWITCHNOTREADY) { | |
1031 | /* force link down for at least 4 seconds */ | |
1032 | interface->link_down_event = jiffies + (4 * HZ); | |
1033 | set_bit(__FM10K_LINK_DOWN, &interface->state); | |
1034 | ||
1035 | /* reset dglort_map back to no config */ | |
1036 | hw->mac.dglort_map = FM10K_DGLORTMAP_NONE; | |
1037 | } | |
1038 | ||
1039 | /* we should validate host state after interrupt event */ | |
1040 | hw->mac.get_host_state = 1; | |
9de15bda JK |
1041 | |
1042 | /* validate host state, and handle VF mailboxes in the service task */ | |
b7d8514c AD |
1043 | fm10k_service_event_schedule(interface); |
1044 | ||
18283cad AD |
1045 | /* re-enable mailbox interrupt and indicate 20us delay */ |
1046 | fm10k_write_reg(hw, FM10K_ITR(FM10K_MBX_VECTOR), | |
1047 | FM10K_ITR_ENABLE | FM10K_MBX_INT_DELAY); | |
1048 | ||
1049 | return IRQ_HANDLED; | |
1050 | } | |
1051 | ||
1052 | void fm10k_mbx_free_irq(struct fm10k_intfc *interface) | |
1053 | { | |
1054 | struct msix_entry *entry = &interface->msix_entries[FM10K_MBX_VECTOR]; | |
1055 | struct fm10k_hw *hw = &interface->hw; | |
1056 | int itr_reg; | |
1057 | ||
1058 | /* disconnect the mailbox */ | |
1059 | hw->mbx.ops.disconnect(hw, &hw->mbx); | |
1060 | ||
1061 | /* disable Mailbox cause */ | |
1062 | if (hw->mac.type == fm10k_mac_pf) { | |
1063 | fm10k_write_reg(hw, FM10K_EIMR, | |
1064 | FM10K_EIMR_DISABLE(PCA_FAULT) | | |
1065 | FM10K_EIMR_DISABLE(FUM_FAULT) | | |
1066 | FM10K_EIMR_DISABLE(MAILBOX) | | |
1067 | FM10K_EIMR_DISABLE(SWITCHREADY) | | |
1068 | FM10K_EIMR_DISABLE(SWITCHNOTREADY) | | |
1069 | FM10K_EIMR_DISABLE(SRAMERROR) | | |
1070 | FM10K_EIMR_DISABLE(VFLR) | | |
1071 | FM10K_EIMR_DISABLE(MAXHOLDTIME)); | |
1072 | itr_reg = FM10K_ITR(FM10K_MBX_VECTOR); | |
5cb8db4a AD |
1073 | } else { |
1074 | itr_reg = FM10K_VFITR(FM10K_MBX_VECTOR); | |
18283cad AD |
1075 | } |
1076 | ||
1077 | fm10k_write_reg(hw, itr_reg, FM10K_ITR_MASK_SET); | |
1078 | ||
1079 | free_irq(entry->vector, interface); | |
1080 | } | |
1081 | ||
5cb8db4a AD |
1082 | static s32 fm10k_mbx_mac_addr(struct fm10k_hw *hw, u32 **results, |
1083 | struct fm10k_mbx_info *mbx) | |
1084 | { | |
1085 | bool vlan_override = hw->mac.vlan_override; | |
1086 | u16 default_vid = hw->mac.default_vid; | |
1087 | struct fm10k_intfc *interface; | |
1088 | s32 err; | |
1089 | ||
1090 | err = fm10k_msg_mac_vlan_vf(hw, results, mbx); | |
1091 | if (err) | |
1092 | return err; | |
1093 | ||
1094 | interface = container_of(hw, struct fm10k_intfc, hw); | |
1095 | ||
1096 | /* MAC was changed so we need reset */ | |
1097 | if (is_valid_ether_addr(hw->mac.perm_addr) && | |
1098 | memcmp(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN)) | |
1099 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
1100 | ||
1101 | /* VLAN override was changed, or default VLAN changed */ | |
1102 | if ((vlan_override != hw->mac.vlan_override) || | |
1103 | (default_vid != hw->mac.default_vid)) | |
1104 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
a211e013 | 1109 | static s32 fm10k_1588_msg_vf(struct fm10k_hw *hw, u32 **results, |
de445199 | 1110 | struct fm10k_mbx_info __always_unused *mbx) |
a211e013 AD |
1111 | { |
1112 | struct fm10k_intfc *interface; | |
1113 | u64 timestamp; | |
1114 | s32 err; | |
1115 | ||
1116 | err = fm10k_tlv_attr_get_u64(results[FM10K_1588_MSG_TIMESTAMP], | |
1117 | ×tamp); | |
1118 | if (err) | |
1119 | return err; | |
1120 | ||
1121 | interface = container_of(hw, struct fm10k_intfc, hw); | |
1122 | ||
1123 | fm10k_ts_tx_hwtstamp(interface, 0, timestamp); | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
18283cad AD |
1128 | /* generic error handler for mailbox issues */ |
1129 | static s32 fm10k_mbx_error(struct fm10k_hw *hw, u32 **results, | |
de445199 | 1130 | struct fm10k_mbx_info __always_unused *mbx) |
18283cad AD |
1131 | { |
1132 | struct fm10k_intfc *interface; | |
1133 | struct pci_dev *pdev; | |
1134 | ||
1135 | interface = container_of(hw, struct fm10k_intfc, hw); | |
1136 | pdev = interface->pdev; | |
1137 | ||
1138 | dev_err(&pdev->dev, "Unknown message ID %u\n", | |
1139 | **results & FM10K_TLV_ID_MASK); | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
5cb8db4a AD |
1144 | static const struct fm10k_msg_data vf_mbx_data[] = { |
1145 | FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test), | |
1146 | FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_mbx_mac_addr), | |
1147 | FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf), | |
a211e013 | 1148 | FM10K_VF_MSG_1588_HANDLER(fm10k_1588_msg_vf), |
5cb8db4a AD |
1149 | FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error), |
1150 | }; | |
1151 | ||
1152 | static int fm10k_mbx_request_irq_vf(struct fm10k_intfc *interface) | |
1153 | { | |
1154 | struct msix_entry *entry = &interface->msix_entries[FM10K_MBX_VECTOR]; | |
1155 | struct net_device *dev = interface->netdev; | |
1156 | struct fm10k_hw *hw = &interface->hw; | |
1157 | int err; | |
1158 | ||
1159 | /* Use timer0 for interrupt moderation on the mailbox */ | |
1160 | u32 itr = FM10K_INT_MAP_TIMER0 | entry->entry; | |
1161 | ||
1162 | /* register mailbox handlers */ | |
1163 | err = hw->mbx.ops.register_handlers(&hw->mbx, vf_mbx_data); | |
1164 | if (err) | |
1165 | return err; | |
1166 | ||
1167 | /* request the IRQ */ | |
1168 | err = request_irq(entry->vector, fm10k_msix_mbx_vf, 0, | |
1169 | dev->name, interface); | |
1170 | if (err) { | |
1171 | netif_err(interface, probe, dev, | |
1172 | "request_irq for msix_mbx failed: %d\n", err); | |
1173 | return err; | |
1174 | } | |
1175 | ||
1176 | /* map all of the interrupt sources */ | |
1177 | fm10k_write_reg(hw, FM10K_VFINT_MAP, itr); | |
1178 | ||
1179 | /* enable interrupt */ | |
1180 | fm10k_write_reg(hw, FM10K_VFITR(entry->entry), FM10K_ITR_ENABLE); | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
18283cad AD |
1185 | static s32 fm10k_lport_map(struct fm10k_hw *hw, u32 **results, |
1186 | struct fm10k_mbx_info *mbx) | |
1187 | { | |
1188 | struct fm10k_intfc *interface; | |
1189 | u32 dglort_map = hw->mac.dglort_map; | |
1190 | s32 err; | |
1191 | ||
1192 | err = fm10k_msg_lport_map_pf(hw, results, mbx); | |
1193 | if (err) | |
1194 | return err; | |
1195 | ||
1196 | interface = container_of(hw, struct fm10k_intfc, hw); | |
1197 | ||
1198 | /* we need to reset if port count was just updated */ | |
1199 | if (dglort_map != hw->mac.dglort_map) | |
1200 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static s32 fm10k_update_pvid(struct fm10k_hw *hw, u32 **results, | |
de445199 | 1206 | struct fm10k_mbx_info __always_unused *mbx) |
18283cad AD |
1207 | { |
1208 | struct fm10k_intfc *interface; | |
1209 | u16 glort, pvid; | |
1210 | u32 pvid_update; | |
1211 | s32 err; | |
1212 | ||
1213 | err = fm10k_tlv_attr_get_u32(results[FM10K_PF_ATTR_ID_UPDATE_PVID], | |
1214 | &pvid_update); | |
1215 | if (err) | |
1216 | return err; | |
1217 | ||
1218 | /* extract values from the pvid update */ | |
1219 | glort = FM10K_MSG_HDR_FIELD_GET(pvid_update, UPDATE_PVID_GLORT); | |
1220 | pvid = FM10K_MSG_HDR_FIELD_GET(pvid_update, UPDATE_PVID_PVID); | |
1221 | ||
1222 | /* if glort is not valid return error */ | |
1223 | if (!fm10k_glort_valid_pf(hw, glort)) | |
1224 | return FM10K_ERR_PARAM; | |
1225 | ||
1226 | /* verify VID is valid */ | |
1227 | if (pvid >= FM10K_VLAN_TABLE_VID_MAX) | |
1228 | return FM10K_ERR_PARAM; | |
1229 | ||
1230 | interface = container_of(hw, struct fm10k_intfc, hw); | |
1231 | ||
883a9ccb AD |
1232 | /* check to see if this belongs to one of the VFs */ |
1233 | err = fm10k_iov_update_pvid(interface, glort, pvid); | |
1234 | if (!err) | |
1235 | return 0; | |
1236 | ||
18283cad AD |
1237 | /* we need to reset if default VLAN was just updated */ |
1238 | if (pvid != hw->mac.default_vid) | |
1239 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
1240 | ||
1241 | hw->mac.default_vid = pvid; | |
1242 | ||
1243 | return 0; | |
1244 | } | |
1245 | ||
a211e013 | 1246 | static s32 fm10k_1588_msg_pf(struct fm10k_hw *hw, u32 **results, |
de445199 | 1247 | struct fm10k_mbx_info __always_unused *mbx) |
a211e013 AD |
1248 | { |
1249 | struct fm10k_swapi_1588_timestamp timestamp; | |
1250 | struct fm10k_iov_data *iov_data; | |
1251 | struct fm10k_intfc *interface; | |
1252 | u16 sglort, vf_idx; | |
1253 | s32 err; | |
1254 | ||
1255 | err = fm10k_tlv_attr_get_le_struct( | |
1256 | results[FM10K_PF_ATTR_ID_1588_TIMESTAMP], | |
1257 | ×tamp, sizeof(timestamp)); | |
1258 | if (err) | |
1259 | return err; | |
1260 | ||
1261 | interface = container_of(hw, struct fm10k_intfc, hw); | |
1262 | ||
1263 | if (timestamp.dglort) { | |
1264 | fm10k_ts_tx_hwtstamp(interface, timestamp.dglort, | |
1265 | le64_to_cpu(timestamp.egress)); | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | /* either dglort or sglort must be set */ | |
1270 | if (!timestamp.sglort) | |
1271 | return FM10K_ERR_PARAM; | |
1272 | ||
1273 | /* verify GLORT is at least one of the ones we own */ | |
1274 | sglort = le16_to_cpu(timestamp.sglort); | |
1275 | if (!fm10k_glort_valid_pf(hw, sglort)) | |
1276 | return FM10K_ERR_PARAM; | |
1277 | ||
1278 | if (sglort == interface->glort) { | |
1279 | fm10k_ts_tx_hwtstamp(interface, 0, | |
1280 | le64_to_cpu(timestamp.ingress)); | |
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | /* if there is no iov_data then there is no mailboxes to process */ | |
1285 | if (!ACCESS_ONCE(interface->iov_data)) | |
1286 | return FM10K_ERR_PARAM; | |
1287 | ||
1288 | rcu_read_lock(); | |
1289 | ||
1290 | /* notify VF if this timestamp belongs to it */ | |
1291 | iov_data = interface->iov_data; | |
1292 | vf_idx = (hw->mac.dglort_map & FM10K_DGLORTMAP_NONE) - sglort; | |
1293 | ||
1294 | if (!iov_data || vf_idx >= iov_data->num_vfs) { | |
1295 | err = FM10K_ERR_PARAM; | |
1296 | goto err_unlock; | |
1297 | } | |
1298 | ||
1299 | err = hw->iov.ops.report_timestamp(hw, &iov_data->vf_info[vf_idx], | |
1300 | le64_to_cpu(timestamp.ingress)); | |
1301 | ||
1302 | err_unlock: | |
1303 | rcu_read_unlock(); | |
1304 | ||
1305 | return err; | |
1306 | } | |
1307 | ||
18283cad AD |
1308 | static const struct fm10k_msg_data pf_mbx_data[] = { |
1309 | FM10K_PF_MSG_ERR_HANDLER(XCAST_MODES, fm10k_msg_err_pf), | |
1310 | FM10K_PF_MSG_ERR_HANDLER(UPDATE_MAC_FWD_RULE, fm10k_msg_err_pf), | |
1311 | FM10K_PF_MSG_LPORT_MAP_HANDLER(fm10k_lport_map), | |
1312 | FM10K_PF_MSG_ERR_HANDLER(LPORT_CREATE, fm10k_msg_err_pf), | |
1313 | FM10K_PF_MSG_ERR_HANDLER(LPORT_DELETE, fm10k_msg_err_pf), | |
1314 | FM10K_PF_MSG_UPDATE_PVID_HANDLER(fm10k_update_pvid), | |
a211e013 | 1315 | FM10K_PF_MSG_1588_TIMESTAMP_HANDLER(fm10k_1588_msg_pf), |
18283cad AD |
1316 | FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error), |
1317 | }; | |
1318 | ||
1319 | static int fm10k_mbx_request_irq_pf(struct fm10k_intfc *interface) | |
1320 | { | |
1321 | struct msix_entry *entry = &interface->msix_entries[FM10K_MBX_VECTOR]; | |
1322 | struct net_device *dev = interface->netdev; | |
1323 | struct fm10k_hw *hw = &interface->hw; | |
1324 | int err; | |
1325 | ||
1326 | /* Use timer0 for interrupt moderation on the mailbox */ | |
1327 | u32 mbx_itr = FM10K_INT_MAP_TIMER0 | entry->entry; | |
1328 | u32 other_itr = FM10K_INT_MAP_IMMEDIATE | entry->entry; | |
1329 | ||
1330 | /* register mailbox handlers */ | |
1331 | err = hw->mbx.ops.register_handlers(&hw->mbx, pf_mbx_data); | |
1332 | if (err) | |
1333 | return err; | |
1334 | ||
1335 | /* request the IRQ */ | |
1336 | err = request_irq(entry->vector, fm10k_msix_mbx_pf, 0, | |
1337 | dev->name, interface); | |
1338 | if (err) { | |
1339 | netif_err(interface, probe, dev, | |
1340 | "request_irq for msix_mbx failed: %d\n", err); | |
1341 | return err; | |
1342 | } | |
1343 | ||
1344 | /* Enable interrupts w/ no moderation for "other" interrupts */ | |
1345 | fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_PCIeFault), other_itr); | |
1346 | fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_SwitchUpDown), other_itr); | |
1347 | fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_SRAM), other_itr); | |
1348 | fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_MaxHoldTime), other_itr); | |
1349 | fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_VFLR), other_itr); | |
1350 | ||
1351 | /* Enable interrupts w/ moderation for mailbox */ | |
1352 | fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_Mailbox), mbx_itr); | |
1353 | ||
1354 | /* Enable individual interrupt causes */ | |
1355 | fm10k_write_reg(hw, FM10K_EIMR, FM10K_EIMR_ENABLE(PCA_FAULT) | | |
1356 | FM10K_EIMR_ENABLE(FUM_FAULT) | | |
1357 | FM10K_EIMR_ENABLE(MAILBOX) | | |
1358 | FM10K_EIMR_ENABLE(SWITCHREADY) | | |
1359 | FM10K_EIMR_ENABLE(SWITCHNOTREADY) | | |
1360 | FM10K_EIMR_ENABLE(SRAMERROR) | | |
1361 | FM10K_EIMR_ENABLE(VFLR) | | |
1362 | FM10K_EIMR_ENABLE(MAXHOLDTIME)); | |
1363 | ||
1364 | /* enable interrupt */ | |
1365 | fm10k_write_reg(hw, FM10K_ITR(entry->entry), FM10K_ITR_ENABLE); | |
1366 | ||
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | int fm10k_mbx_request_irq(struct fm10k_intfc *interface) | |
1371 | { | |
1372 | struct fm10k_hw *hw = &interface->hw; | |
1373 | int err; | |
1374 | ||
1375 | /* enable Mailbox cause */ | |
5cb8db4a AD |
1376 | if (hw->mac.type == fm10k_mac_pf) |
1377 | err = fm10k_mbx_request_irq_pf(interface); | |
1378 | else | |
1379 | err = fm10k_mbx_request_irq_vf(interface); | |
18283cad AD |
1380 | |
1381 | /* connect mailbox */ | |
1382 | if (!err) | |
1383 | err = hw->mbx.ops.connect(hw, &hw->mbx); | |
1384 | ||
1385 | return err; | |
1386 | } | |
1387 | ||
1388 | /** | |
1389 | * fm10k_qv_free_irq - release interrupts associated with queue vectors | |
1390 | * @interface: board private structure | |
1391 | * | |
1392 | * Release all interrupts associated with this interface | |
1393 | **/ | |
1394 | void fm10k_qv_free_irq(struct fm10k_intfc *interface) | |
1395 | { | |
1396 | int vector = interface->num_q_vectors; | |
1397 | struct fm10k_hw *hw = &interface->hw; | |
1398 | struct msix_entry *entry; | |
1399 | ||
1400 | entry = &interface->msix_entries[NON_Q_VECTORS(hw) + vector]; | |
1401 | ||
1402 | while (vector) { | |
1403 | struct fm10k_q_vector *q_vector; | |
1404 | ||
1405 | vector--; | |
1406 | entry--; | |
1407 | q_vector = interface->q_vector[vector]; | |
1408 | ||
1409 | if (!q_vector->tx.count && !q_vector->rx.count) | |
1410 | continue; | |
1411 | ||
1412 | /* disable interrupts */ | |
1413 | ||
1414 | writel(FM10K_ITR_MASK_SET, q_vector->itr); | |
1415 | ||
1416 | free_irq(entry->vector, q_vector); | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | /** | |
1421 | * fm10k_qv_request_irq - initialize interrupts for queue vectors | |
1422 | * @interface: board private structure | |
1423 | * | |
1424 | * Attempts to configure interrupts using the best available | |
1425 | * capabilities of the hardware and kernel. | |
1426 | **/ | |
1427 | int fm10k_qv_request_irq(struct fm10k_intfc *interface) | |
1428 | { | |
1429 | struct net_device *dev = interface->netdev; | |
1430 | struct fm10k_hw *hw = &interface->hw; | |
1431 | struct msix_entry *entry; | |
1432 | int ri = 0, ti = 0; | |
1433 | int vector, err; | |
1434 | ||
1435 | entry = &interface->msix_entries[NON_Q_VECTORS(hw)]; | |
1436 | ||
1437 | for (vector = 0; vector < interface->num_q_vectors; vector++) { | |
1438 | struct fm10k_q_vector *q_vector = interface->q_vector[vector]; | |
1439 | ||
1440 | /* name the vector */ | |
1441 | if (q_vector->tx.count && q_vector->rx.count) { | |
1442 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
1443 | "%s-TxRx-%d", dev->name, ri++); | |
1444 | ti++; | |
1445 | } else if (q_vector->rx.count) { | |
1446 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
1447 | "%s-rx-%d", dev->name, ri++); | |
1448 | } else if (q_vector->tx.count) { | |
1449 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
1450 | "%s-tx-%d", dev->name, ti++); | |
1451 | } else { | |
1452 | /* skip this unused q_vector */ | |
1453 | continue; | |
1454 | } | |
1455 | ||
1456 | /* Assign ITR register to q_vector */ | |
5cb8db4a AD |
1457 | q_vector->itr = (hw->mac.type == fm10k_mac_pf) ? |
1458 | &interface->uc_addr[FM10K_ITR(entry->entry)] : | |
1459 | &interface->uc_addr[FM10K_VFITR(entry->entry)]; | |
18283cad AD |
1460 | |
1461 | /* request the IRQ */ | |
1462 | err = request_irq(entry->vector, &fm10k_msix_clean_rings, 0, | |
1463 | q_vector->name, q_vector); | |
1464 | if (err) { | |
1465 | netif_err(interface, probe, dev, | |
1466 | "request_irq failed for MSIX interrupt Error: %d\n", | |
1467 | err); | |
1468 | goto err_out; | |
1469 | } | |
1470 | ||
1471 | /* Enable q_vector */ | |
1472 | writel(FM10K_ITR_ENABLE, q_vector->itr); | |
1473 | ||
1474 | entry++; | |
1475 | } | |
1476 | ||
1477 | return 0; | |
1478 | ||
1479 | err_out: | |
1480 | /* wind through the ring freeing all entries and vectors */ | |
1481 | while (vector) { | |
1482 | struct fm10k_q_vector *q_vector; | |
1483 | ||
1484 | entry--; | |
1485 | vector--; | |
1486 | q_vector = interface->q_vector[vector]; | |
1487 | ||
1488 | if (!q_vector->tx.count && !q_vector->rx.count) | |
1489 | continue; | |
1490 | ||
1491 | /* disable interrupts */ | |
1492 | ||
1493 | writel(FM10K_ITR_MASK_SET, q_vector->itr); | |
1494 | ||
1495 | free_irq(entry->vector, q_vector); | |
1496 | } | |
1497 | ||
1498 | return err; | |
1499 | } | |
1500 | ||
504c5eac AD |
1501 | void fm10k_up(struct fm10k_intfc *interface) |
1502 | { | |
1503 | struct fm10k_hw *hw = &interface->hw; | |
1504 | ||
1505 | /* Enable Tx/Rx DMA */ | |
1506 | hw->mac.ops.start_hw(hw); | |
1507 | ||
3abaae42 AD |
1508 | /* configure Tx descriptor rings */ |
1509 | fm10k_configure_tx(interface); | |
1510 | ||
1511 | /* configure Rx descriptor rings */ | |
1512 | fm10k_configure_rx(interface); | |
1513 | ||
504c5eac AD |
1514 | /* configure interrupts */ |
1515 | hw->mac.ops.update_int_moderator(hw); | |
1516 | ||
1517 | /* clear down bit to indicate we are ready to go */ | |
1518 | clear_bit(__FM10K_DOWN, &interface->state); | |
1519 | ||
18283cad AD |
1520 | /* enable polling cleanups */ |
1521 | fm10k_napi_enable_all(interface); | |
1522 | ||
504c5eac AD |
1523 | /* re-establish Rx filters */ |
1524 | fm10k_restore_rx_state(interface); | |
1525 | ||
1526 | /* enable transmits */ | |
1527 | netif_tx_start_all_queues(interface->netdev); | |
b7d8514c | 1528 | |
54b3c9cf | 1529 | /* kick off the service timer now */ |
4d419156 | 1530 | hw->mac.get_host_state = 1; |
b7d8514c | 1531 | mod_timer(&interface->service_timer, jiffies); |
504c5eac AD |
1532 | } |
1533 | ||
18283cad AD |
1534 | static void fm10k_napi_disable_all(struct fm10k_intfc *interface) |
1535 | { | |
1536 | struct fm10k_q_vector *q_vector; | |
1537 | int q_idx; | |
1538 | ||
1539 | for (q_idx = 0; q_idx < interface->num_q_vectors; q_idx++) { | |
1540 | q_vector = interface->q_vector[q_idx]; | |
1541 | napi_disable(&q_vector->napi); | |
1542 | } | |
1543 | } | |
1544 | ||
504c5eac AD |
1545 | void fm10k_down(struct fm10k_intfc *interface) |
1546 | { | |
1547 | struct net_device *netdev = interface->netdev; | |
1548 | struct fm10k_hw *hw = &interface->hw; | |
1549 | ||
1550 | /* signal that we are down to the interrupt handler and service task */ | |
1551 | set_bit(__FM10K_DOWN, &interface->state); | |
1552 | ||
1553 | /* call carrier off first to avoid false dev_watchdog timeouts */ | |
1554 | netif_carrier_off(netdev); | |
1555 | ||
1556 | /* disable transmits */ | |
1557 | netif_tx_stop_all_queues(netdev); | |
1558 | netif_tx_disable(netdev); | |
1559 | ||
1560 | /* reset Rx filters */ | |
1561 | fm10k_reset_rx_state(interface); | |
1562 | ||
1563 | /* allow 10ms for device to quiesce */ | |
1564 | usleep_range(10000, 20000); | |
1565 | ||
18283cad AD |
1566 | /* disable polling routines */ |
1567 | fm10k_napi_disable_all(interface); | |
1568 | ||
b7d8514c AD |
1569 | /* capture stats one last time before stopping interface */ |
1570 | fm10k_update_stats(interface); | |
1571 | ||
504c5eac AD |
1572 | /* Disable DMA engine for Tx/Rx */ |
1573 | hw->mac.ops.stop_hw(hw); | |
3abaae42 AD |
1574 | |
1575 | /* free any buffers still on the rings */ | |
1576 | fm10k_clean_all_tx_rings(interface); | |
ec6acb80 | 1577 | fm10k_clean_all_rx_rings(interface); |
504c5eac AD |
1578 | } |
1579 | ||
0e7b3644 AD |
1580 | /** |
1581 | * fm10k_sw_init - Initialize general software structures | |
1582 | * @interface: host interface private structure to initialize | |
1583 | * | |
1584 | * fm10k_sw_init initializes the interface private data structure. | |
1585 | * Fields are initialized based on PCI device information and | |
1586 | * OS network device settings (MTU size). | |
1587 | **/ | |
1588 | static int fm10k_sw_init(struct fm10k_intfc *interface, | |
1589 | const struct pci_device_id *ent) | |
1590 | { | |
0e7b3644 AD |
1591 | const struct fm10k_info *fi = fm10k_info_tbl[ent->driver_data]; |
1592 | struct fm10k_hw *hw = &interface->hw; | |
1593 | struct pci_dev *pdev = interface->pdev; | |
1594 | struct net_device *netdev = interface->netdev; | |
c41a4fba | 1595 | u32 rss_key[FM10K_RSSRK_SIZE]; |
0e7b3644 AD |
1596 | unsigned int rss; |
1597 | int err; | |
1598 | ||
1599 | /* initialize back pointer */ | |
1600 | hw->back = interface; | |
1601 | hw->hw_addr = interface->uc_addr; | |
1602 | ||
1603 | /* PCI config space info */ | |
1604 | hw->vendor_id = pdev->vendor; | |
1605 | hw->device_id = pdev->device; | |
1606 | hw->revision_id = pdev->revision; | |
1607 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1608 | hw->subsystem_device_id = pdev->subsystem_device; | |
1609 | ||
1610 | /* Setup hw api */ | |
1611 | memcpy(&hw->mac.ops, fi->mac_ops, sizeof(hw->mac.ops)); | |
1612 | hw->mac.type = fi->mac; | |
1613 | ||
883a9ccb AD |
1614 | /* Setup IOV handlers */ |
1615 | if (fi->iov_ops) | |
1616 | memcpy(&hw->iov.ops, fi->iov_ops, sizeof(hw->iov.ops)); | |
1617 | ||
0e7b3644 AD |
1618 | /* Set common capability flags and settings */ |
1619 | rss = min_t(int, FM10K_MAX_RSS_INDICES, num_online_cpus()); | |
1620 | interface->ring_feature[RING_F_RSS].limit = rss; | |
1621 | fi->get_invariants(hw); | |
1622 | ||
1623 | /* pick up the PCIe bus settings for reporting later */ | |
1624 | if (hw->mac.ops.get_bus_info) | |
1625 | hw->mac.ops.get_bus_info(hw); | |
1626 | ||
1627 | /* limit the usable DMA range */ | |
1628 | if (hw->mac.ops.set_dma_mask) | |
1629 | hw->mac.ops.set_dma_mask(hw, dma_get_mask(&pdev->dev)); | |
1630 | ||
1631 | /* update netdev with DMA restrictions */ | |
1632 | if (dma_get_mask(&pdev->dev) > DMA_BIT_MASK(32)) { | |
1633 | netdev->features |= NETIF_F_HIGHDMA; | |
1634 | netdev->vlan_features |= NETIF_F_HIGHDMA; | |
1635 | } | |
1636 | ||
b7d8514c AD |
1637 | /* delay any future reset requests */ |
1638 | interface->last_reset = jiffies + (10 * HZ); | |
1639 | ||
0e7b3644 AD |
1640 | /* reset and initialize the hardware so it is in a known state */ |
1641 | err = hw->mac.ops.reset_hw(hw) ? : hw->mac.ops.init_hw(hw); | |
1642 | if (err) { | |
1643 | dev_err(&pdev->dev, "init_hw failed: %d\n", err); | |
1644 | return err; | |
1645 | } | |
1646 | ||
1647 | /* initialize hardware statistics */ | |
1648 | hw->mac.ops.update_hw_stats(hw, &interface->stats); | |
1649 | ||
883a9ccb AD |
1650 | /* Set upper limit on IOV VFs that can be allocated */ |
1651 | pci_sriov_set_totalvfs(pdev, hw->iov.total_vfs); | |
1652 | ||
0e7b3644 AD |
1653 | /* Start with random Ethernet address */ |
1654 | eth_random_addr(hw->mac.addr); | |
1655 | ||
1656 | /* Initialize MAC address from hardware */ | |
1657 | err = hw->mac.ops.read_mac_addr(hw); | |
1658 | if (err) { | |
1659 | dev_warn(&pdev->dev, | |
1660 | "Failed to obtain MAC address defaulting to random\n"); | |
1661 | /* tag address assignment as random */ | |
1662 | netdev->addr_assign_type |= NET_ADDR_RANDOM; | |
1663 | } | |
1664 | ||
1665 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
1666 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); | |
1667 | ||
1668 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
1669 | dev_err(&pdev->dev, "Invalid MAC Address\n"); | |
1670 | return -EIO; | |
1671 | } | |
1672 | ||
a211e013 AD |
1673 | /* assign BAR 4 resources for use with PTP */ |
1674 | if (fm10k_read_reg(hw, FM10K_CTRL) & FM10K_CTRL_BAR4_ALLOWED) | |
1675 | interface->sw_addr = ioremap(pci_resource_start(pdev, 4), | |
1676 | pci_resource_len(pdev, 4)); | |
1677 | hw->sw_addr = interface->sw_addr; | |
1678 | ||
0e7b3644 AD |
1679 | /* Only the PF can support VXLAN and NVGRE offloads */ |
1680 | if (hw->mac.type != fm10k_mac_pf) { | |
1681 | netdev->hw_enc_features = 0; | |
1682 | netdev->features &= ~NETIF_F_GSO_UDP_TUNNEL; | |
1683 | netdev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL; | |
1684 | } | |
1685 | ||
9f801abc AD |
1686 | /* initialize DCBNL interface */ |
1687 | fm10k_dcbnl_set_ops(netdev); | |
1688 | ||
b7d8514c AD |
1689 | /* Initialize service timer and service task */ |
1690 | set_bit(__FM10K_SERVICE_DISABLE, &interface->state); | |
1691 | setup_timer(&interface->service_timer, &fm10k_service_timer, | |
1692 | (unsigned long)interface); | |
1693 | INIT_WORK(&interface->service_task, fm10k_service_task); | |
1694 | ||
54b3c9cf JK |
1695 | /* kick off service timer now, even when interface is down */ |
1696 | mod_timer(&interface->service_timer, (HZ * 2) + jiffies); | |
1697 | ||
a211e013 AD |
1698 | /* Intitialize timestamp data */ |
1699 | fm10k_ts_init(interface); | |
1700 | ||
e27ef599 AD |
1701 | /* set default ring sizes */ |
1702 | interface->tx_ring_count = FM10K_DEFAULT_TXD; | |
1703 | interface->rx_ring_count = FM10K_DEFAULT_RXD; | |
1704 | ||
18283cad AD |
1705 | /* set default interrupt moderation */ |
1706 | interface->tx_itr = FM10K_ITR_10K; | |
1707 | interface->rx_itr = FM10K_ITR_ADAPTIVE | FM10K_ITR_20K; | |
1708 | ||
0e7b3644 AD |
1709 | /* initialize vxlan_port list */ |
1710 | INIT_LIST_HEAD(&interface->vxlan_port); | |
1711 | ||
c41a4fba ED |
1712 | netdev_rss_key_fill(rss_key, sizeof(rss_key)); |
1713 | memcpy(interface->rssrk, rss_key, sizeof(rss_key)); | |
0e7b3644 AD |
1714 | |
1715 | /* Start off interface as being down */ | |
1716 | set_bit(__FM10K_DOWN, &interface->state); | |
1717 | ||
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | static void fm10k_slot_warn(struct fm10k_intfc *interface) | |
1722 | { | |
106c07a4 JK |
1723 | enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN; |
1724 | enum pci_bus_speed speed = PCI_SPEED_UNKNOWN; | |
0e7b3644 | 1725 | struct fm10k_hw *hw = &interface->hw; |
106c07a4 | 1726 | int max_gts = 0, expected_gts = 0; |
0e7b3644 | 1727 | |
106c07a4 JK |
1728 | if (pcie_get_minimum_link(interface->pdev, &speed, &width) || |
1729 | speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN) { | |
1730 | dev_warn(&interface->pdev->dev, | |
1731 | "Unable to determine PCI Express bandwidth.\n"); | |
0e7b3644 | 1732 | return; |
106c07a4 JK |
1733 | } |
1734 | ||
1735 | switch (speed) { | |
1736 | case PCIE_SPEED_2_5GT: | |
1737 | /* 8b/10b encoding reduces max throughput by 20% */ | |
1738 | max_gts = 2 * width; | |
1739 | break; | |
1740 | case PCIE_SPEED_5_0GT: | |
1741 | /* 8b/10b encoding reduces max throughput by 20% */ | |
1742 | max_gts = 4 * width; | |
1743 | break; | |
1744 | case PCIE_SPEED_8_0GT: | |
1745 | /* 128b/130b encoding has less than 2% impact on throughput */ | |
1746 | max_gts = 8 * width; | |
1747 | break; | |
1748 | default: | |
1749 | dev_warn(&interface->pdev->dev, | |
1750 | "Unable to determine PCI Express bandwidth.\n"); | |
1751 | return; | |
1752 | } | |
1753 | ||
1754 | dev_info(&interface->pdev->dev, | |
1755 | "PCI Express bandwidth of %dGT/s available\n", | |
1756 | max_gts); | |
1757 | dev_info(&interface->pdev->dev, | |
1758 | "(Speed:%s, Width: x%d, Encoding Loss:%s, Payload:%s)\n", | |
1759 | (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : | |
1760 | speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : | |
1761 | speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : | |
1762 | "Unknown"), | |
1763 | hw->bus.width, | |
1764 | (speed == PCIE_SPEED_2_5GT ? "20%" : | |
1765 | speed == PCIE_SPEED_5_0GT ? "20%" : | |
1766 | speed == PCIE_SPEED_8_0GT ? "<2%" : | |
1767 | "Unknown"), | |
1768 | (hw->bus.payload == fm10k_bus_payload_128 ? "128B" : | |
1769 | hw->bus.payload == fm10k_bus_payload_256 ? "256B" : | |
1770 | hw->bus.payload == fm10k_bus_payload_512 ? "512B" : | |
1771 | "Unknown")); | |
0e7b3644 | 1772 | |
106c07a4 JK |
1773 | switch (hw->bus_caps.speed) { |
1774 | case fm10k_bus_speed_2500: | |
1775 | /* 8b/10b encoding reduces max throughput by 20% */ | |
1776 | expected_gts = 2 * hw->bus_caps.width; | |
1777 | break; | |
1778 | case fm10k_bus_speed_5000: | |
1779 | /* 8b/10b encoding reduces max throughput by 20% */ | |
1780 | expected_gts = 4 * hw->bus_caps.width; | |
1781 | break; | |
1782 | case fm10k_bus_speed_8000: | |
1783 | /* 128b/130b encoding has less than 2% impact on throughput */ | |
1784 | expected_gts = 8 * hw->bus_caps.width; | |
1785 | break; | |
1786 | default: | |
1787 | dev_warn(&interface->pdev->dev, | |
1788 | "Unable to determine expected PCI Express bandwidth.\n"); | |
1789 | return; | |
1790 | } | |
1791 | ||
1792 | if (max_gts < expected_gts) { | |
1793 | dev_warn(&interface->pdev->dev, | |
1794 | "This device requires %dGT/s of bandwidth for optimal performance.\n", | |
1795 | expected_gts); | |
1796 | dev_warn(&interface->pdev->dev, | |
1797 | "A %sslot with x%d lanes is suggested.\n", | |
1798 | (hw->bus_caps.speed == fm10k_bus_speed_2500 ? "2.5GT/s " : | |
1799 | hw->bus_caps.speed == fm10k_bus_speed_5000 ? "5.0GT/s " : | |
1800 | hw->bus_caps.speed == fm10k_bus_speed_8000 ? "8.0GT/s " : ""), | |
1801 | hw->bus_caps.width); | |
1802 | } | |
0e7b3644 AD |
1803 | } |
1804 | ||
b3890e30 AD |
1805 | /** |
1806 | * fm10k_probe - Device Initialization Routine | |
1807 | * @pdev: PCI device information struct | |
1808 | * @ent: entry in fm10k_pci_tbl | |
1809 | * | |
1810 | * Returns 0 on success, negative on failure | |
1811 | * | |
1812 | * fm10k_probe initializes an interface identified by a pci_dev structure. | |
1813 | * The OS initialization, configuring of the interface private structure, | |
1814 | * and a hardware reset occur. | |
1815 | **/ | |
1816 | static int fm10k_probe(struct pci_dev *pdev, | |
1817 | const struct pci_device_id *ent) | |
1818 | { | |
0e7b3644 AD |
1819 | struct net_device *netdev; |
1820 | struct fm10k_intfc *interface; | |
b3890e30 | 1821 | int err; |
b3890e30 AD |
1822 | |
1823 | err = pci_enable_device_mem(pdev); | |
1824 | if (err) | |
1825 | return err; | |
1826 | ||
c04ae58e JK |
1827 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)); |
1828 | if (err) | |
b3890e30 | 1829 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
c04ae58e JK |
1830 | if (err) { |
1831 | dev_err(&pdev->dev, | |
1832 | "DMA configuration failed: %d\n", err); | |
1833 | goto err_dma; | |
b3890e30 AD |
1834 | } |
1835 | ||
1836 | err = pci_request_selected_regions(pdev, | |
1837 | pci_select_bars(pdev, | |
1838 | IORESOURCE_MEM), | |
1839 | fm10k_driver_name); | |
1840 | if (err) { | |
1841 | dev_err(&pdev->dev, | |
0197cde6 | 1842 | "pci_request_selected_regions failed: %d\n", err); |
b3890e30 AD |
1843 | goto err_pci_reg; |
1844 | } | |
1845 | ||
19ae1b3f AD |
1846 | pci_enable_pcie_error_reporting(pdev); |
1847 | ||
b3890e30 AD |
1848 | pci_set_master(pdev); |
1849 | pci_save_state(pdev); | |
1850 | ||
0e7b3644 AD |
1851 | netdev = fm10k_alloc_netdev(); |
1852 | if (!netdev) { | |
1853 | err = -ENOMEM; | |
1854 | goto err_alloc_netdev; | |
1855 | } | |
1856 | ||
1857 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
1858 | ||
1859 | interface = netdev_priv(netdev); | |
1860 | pci_set_drvdata(pdev, interface); | |
1861 | ||
1862 | interface->netdev = netdev; | |
1863 | interface->pdev = pdev; | |
0e7b3644 AD |
1864 | |
1865 | interface->uc_addr = ioremap(pci_resource_start(pdev, 0), | |
1866 | FM10K_UC_ADDR_SIZE); | |
1867 | if (!interface->uc_addr) { | |
1868 | err = -EIO; | |
1869 | goto err_ioremap; | |
1870 | } | |
1871 | ||
1872 | err = fm10k_sw_init(interface, ent); | |
1873 | if (err) | |
1874 | goto err_sw_init; | |
1875 | ||
7461fd91 AD |
1876 | /* enable debugfs support */ |
1877 | fm10k_dbg_intfc_init(interface); | |
1878 | ||
18283cad AD |
1879 | err = fm10k_init_queueing_scheme(interface); |
1880 | if (err) | |
1881 | goto err_sw_init; | |
1882 | ||
1883 | err = fm10k_mbx_request_irq(interface); | |
1884 | if (err) | |
1885 | goto err_mbx_interrupt; | |
1886 | ||
0e7b3644 AD |
1887 | /* final check of hardware state before registering the interface */ |
1888 | err = fm10k_hw_ready(interface); | |
1889 | if (err) | |
1890 | goto err_register; | |
1891 | ||
1892 | err = register_netdev(netdev); | |
1893 | if (err) | |
1894 | goto err_register; | |
1895 | ||
1896 | /* carrier off reporting is important to ethtool even BEFORE open */ | |
1897 | netif_carrier_off(netdev); | |
1898 | ||
1899 | /* stop all the transmit queues from transmitting until link is up */ | |
1900 | netif_tx_stop_all_queues(netdev); | |
1901 | ||
a211e013 AD |
1902 | /* Register PTP interface */ |
1903 | fm10k_ptp_register(interface); | |
1904 | ||
0e7b3644 AD |
1905 | /* print warning for non-optimal configurations */ |
1906 | fm10k_slot_warn(interface); | |
1907 | ||
0ff36676 AD |
1908 | /* report MAC address for logging */ |
1909 | dev_info(&pdev->dev, "%pM\n", netdev->dev_addr); | |
1910 | ||
883a9ccb AD |
1911 | /* enable SR-IOV after registering netdev to enforce PF/VF ordering */ |
1912 | fm10k_iov_configure(pdev, 0); | |
1913 | ||
b7d8514c AD |
1914 | /* clear the service task disable bit to allow service task to start */ |
1915 | clear_bit(__FM10K_SERVICE_DISABLE, &interface->state); | |
1916 | ||
b3890e30 AD |
1917 | return 0; |
1918 | ||
0e7b3644 | 1919 | err_register: |
18283cad AD |
1920 | fm10k_mbx_free_irq(interface); |
1921 | err_mbx_interrupt: | |
1922 | fm10k_clear_queueing_scheme(interface); | |
0e7b3644 | 1923 | err_sw_init: |
a211e013 AD |
1924 | if (interface->sw_addr) |
1925 | iounmap(interface->sw_addr); | |
0e7b3644 AD |
1926 | iounmap(interface->uc_addr); |
1927 | err_ioremap: | |
1928 | free_netdev(netdev); | |
1929 | err_alloc_netdev: | |
1930 | pci_release_selected_regions(pdev, | |
1931 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
b3890e30 AD |
1932 | err_pci_reg: |
1933 | err_dma: | |
1934 | pci_disable_device(pdev); | |
1935 | return err; | |
1936 | } | |
1937 | ||
1938 | /** | |
1939 | * fm10k_remove - Device Removal Routine | |
1940 | * @pdev: PCI device information struct | |
1941 | * | |
1942 | * fm10k_remove is called by the PCI subsystem to alert the driver | |
1943 | * that it should release a PCI device. The could be caused by a | |
1944 | * Hot-Plug event, or because the driver is going to be removed from | |
1945 | * memory. | |
1946 | **/ | |
1947 | static void fm10k_remove(struct pci_dev *pdev) | |
1948 | { | |
0e7b3644 AD |
1949 | struct fm10k_intfc *interface = pci_get_drvdata(pdev); |
1950 | struct net_device *netdev = interface->netdev; | |
1951 | ||
54b3c9cf JK |
1952 | del_timer_sync(&interface->service_timer); |
1953 | ||
b7d8514c AD |
1954 | set_bit(__FM10K_SERVICE_DISABLE, &interface->state); |
1955 | cancel_work_sync(&interface->service_task); | |
1956 | ||
0e7b3644 AD |
1957 | /* free netdev, this may bounce the interrupts due to setup_tc */ |
1958 | if (netdev->reg_state == NETREG_REGISTERED) | |
1959 | unregister_netdev(netdev); | |
1960 | ||
a211e013 AD |
1961 | /* cleanup timestamp handling */ |
1962 | fm10k_ptp_unregister(interface); | |
1963 | ||
883a9ccb AD |
1964 | /* release VFs */ |
1965 | fm10k_iov_disable(pdev); | |
1966 | ||
18283cad AD |
1967 | /* disable mailbox interrupt */ |
1968 | fm10k_mbx_free_irq(interface); | |
1969 | ||
1970 | /* free interrupts */ | |
1971 | fm10k_clear_queueing_scheme(interface); | |
1972 | ||
7461fd91 AD |
1973 | /* remove any debugfs interfaces */ |
1974 | fm10k_dbg_intfc_exit(interface); | |
1975 | ||
a211e013 AD |
1976 | if (interface->sw_addr) |
1977 | iounmap(interface->sw_addr); | |
0e7b3644 AD |
1978 | iounmap(interface->uc_addr); |
1979 | ||
1980 | free_netdev(netdev); | |
1981 | ||
b3890e30 AD |
1982 | pci_release_selected_regions(pdev, |
1983 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
1984 | ||
19ae1b3f AD |
1985 | pci_disable_pcie_error_reporting(pdev); |
1986 | ||
b3890e30 AD |
1987 | pci_disable_device(pdev); |
1988 | } | |
1989 | ||
19ae1b3f AD |
1990 | #ifdef CONFIG_PM |
1991 | /** | |
1992 | * fm10k_resume - Restore device to pre-sleep state | |
1993 | * @pdev: PCI device information struct | |
1994 | * | |
1995 | * fm10k_resume is called after the system has powered back up from a sleep | |
1996 | * state and is ready to resume operation. This function is meant to restore | |
1997 | * the device back to its pre-sleep state. | |
1998 | **/ | |
1999 | static int fm10k_resume(struct pci_dev *pdev) | |
2000 | { | |
2001 | struct fm10k_intfc *interface = pci_get_drvdata(pdev); | |
2002 | struct net_device *netdev = interface->netdev; | |
2003 | struct fm10k_hw *hw = &interface->hw; | |
2004 | u32 err; | |
2005 | ||
2006 | pci_set_power_state(pdev, PCI_D0); | |
2007 | pci_restore_state(pdev); | |
2008 | ||
2009 | /* pci_restore_state clears dev->state_saved so call | |
2010 | * pci_save_state to restore it. | |
2011 | */ | |
2012 | pci_save_state(pdev); | |
2013 | ||
2014 | err = pci_enable_device_mem(pdev); | |
2015 | if (err) { | |
2016 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); | |
2017 | return err; | |
2018 | } | |
2019 | pci_set_master(pdev); | |
2020 | ||
2021 | pci_wake_from_d3(pdev, false); | |
2022 | ||
2023 | /* refresh hw_addr in case it was dropped */ | |
2024 | hw->hw_addr = interface->uc_addr; | |
2025 | ||
2026 | /* reset hardware to known state */ | |
2027 | err = hw->mac.ops.init_hw(&interface->hw); | |
2028 | if (err) | |
2029 | return err; | |
2030 | ||
2031 | /* reset statistics starting values */ | |
2032 | hw->mac.ops.rebind_hw_stats(hw, &interface->stats); | |
2033 | ||
a211e013 AD |
2034 | /* reset clock */ |
2035 | fm10k_ts_reset(interface); | |
2036 | ||
19ae1b3f AD |
2037 | rtnl_lock(); |
2038 | ||
2039 | err = fm10k_init_queueing_scheme(interface); | |
2040 | if (!err) { | |
2041 | fm10k_mbx_request_irq(interface); | |
2042 | if (netif_running(netdev)) | |
2043 | err = fm10k_open(netdev); | |
2044 | } | |
2045 | ||
2046 | rtnl_unlock(); | |
2047 | ||
2048 | if (err) | |
2049 | return err; | |
2050 | ||
e4029662 JK |
2051 | /* assume host is not ready, to prevent race with watchdog in case we |
2052 | * actually don't have connection to the switch | |
2053 | */ | |
2054 | interface->host_ready = false; | |
2055 | fm10k_watchdog_host_not_ready(interface); | |
2056 | ||
2057 | /* clear the service task disable bit to allow service task to start */ | |
2058 | clear_bit(__FM10K_SERVICE_DISABLE, &interface->state); | |
2059 | fm10k_service_event_schedule(interface); | |
2060 | ||
883a9ccb AD |
2061 | /* restore SR-IOV interface */ |
2062 | fm10k_iov_resume(pdev); | |
2063 | ||
19ae1b3f AD |
2064 | netif_device_attach(netdev); |
2065 | ||
2066 | return 0; | |
2067 | } | |
2068 | ||
2069 | /** | |
2070 | * fm10k_suspend - Prepare the device for a system sleep state | |
2071 | * @pdev: PCI device information struct | |
2072 | * | |
2073 | * fm10k_suspend is meant to shutdown the device prior to the system entering | |
2074 | * a sleep state. The fm10k hardware does not support wake on lan so the | |
2075 | * driver simply needs to shut down the device so it is in a low power state. | |
2076 | **/ | |
de445199 JK |
2077 | static int fm10k_suspend(struct pci_dev *pdev, |
2078 | pm_message_t __always_unused state) | |
19ae1b3f AD |
2079 | { |
2080 | struct fm10k_intfc *interface = pci_get_drvdata(pdev); | |
2081 | struct net_device *netdev = interface->netdev; | |
2082 | int err = 0; | |
2083 | ||
2084 | netif_device_detach(netdev); | |
2085 | ||
883a9ccb AD |
2086 | fm10k_iov_suspend(pdev); |
2087 | ||
e4029662 JK |
2088 | /* the watchdog tasks may read registers, which will appear like a |
2089 | * surprise-remove event once the PCI device is disabled. This will | |
2090 | * cause us to close the netdevice, so we don't retain the open/closed | |
2091 | * state post-resume. Prevent this by disabling the service task while | |
2092 | * suspended, until we actually resume. | |
2093 | */ | |
2094 | set_bit(__FM10K_SERVICE_DISABLE, &interface->state); | |
2095 | cancel_work_sync(&interface->service_task); | |
2096 | ||
19ae1b3f AD |
2097 | rtnl_lock(); |
2098 | ||
2099 | if (netif_running(netdev)) | |
2100 | fm10k_close(netdev); | |
2101 | ||
2102 | fm10k_mbx_free_irq(interface); | |
2103 | ||
2104 | fm10k_clear_queueing_scheme(interface); | |
2105 | ||
2106 | rtnl_unlock(); | |
2107 | ||
2108 | err = pci_save_state(pdev); | |
2109 | if (err) | |
2110 | return err; | |
2111 | ||
2112 | pci_disable_device(pdev); | |
2113 | pci_wake_from_d3(pdev, false); | |
2114 | pci_set_power_state(pdev, PCI_D3hot); | |
2115 | ||
2116 | return 0; | |
2117 | } | |
2118 | ||
2119 | #endif /* CONFIG_PM */ | |
2120 | /** | |
2121 | * fm10k_io_error_detected - called when PCI error is detected | |
2122 | * @pdev: Pointer to PCI device | |
2123 | * @state: The current pci connection state | |
2124 | * | |
2125 | * This function is called after a PCI bus error affecting | |
2126 | * this device has been detected. | |
2127 | */ | |
2128 | static pci_ers_result_t fm10k_io_error_detected(struct pci_dev *pdev, | |
2129 | pci_channel_state_t state) | |
2130 | { | |
2131 | struct fm10k_intfc *interface = pci_get_drvdata(pdev); | |
2132 | struct net_device *netdev = interface->netdev; | |
2133 | ||
2134 | netif_device_detach(netdev); | |
2135 | ||
2136 | if (state == pci_channel_io_perm_failure) | |
2137 | return PCI_ERS_RESULT_DISCONNECT; | |
2138 | ||
2139 | if (netif_running(netdev)) | |
2140 | fm10k_close(netdev); | |
2141 | ||
2142 | fm10k_mbx_free_irq(interface); | |
2143 | ||
2144 | pci_disable_device(pdev); | |
2145 | ||
2146 | /* Request a slot reset. */ | |
2147 | return PCI_ERS_RESULT_NEED_RESET; | |
2148 | } | |
2149 | ||
2150 | /** | |
2151 | * fm10k_io_slot_reset - called after the pci bus has been reset. | |
2152 | * @pdev: Pointer to PCI device | |
2153 | * | |
2154 | * Restart the card from scratch, as if from a cold-boot. | |
2155 | */ | |
2156 | static pci_ers_result_t fm10k_io_slot_reset(struct pci_dev *pdev) | |
2157 | { | |
2158 | struct fm10k_intfc *interface = pci_get_drvdata(pdev); | |
2159 | pci_ers_result_t result; | |
2160 | ||
2161 | if (pci_enable_device_mem(pdev)) { | |
2162 | dev_err(&pdev->dev, | |
2163 | "Cannot re-enable PCI device after reset.\n"); | |
2164 | result = PCI_ERS_RESULT_DISCONNECT; | |
2165 | } else { | |
2166 | pci_set_master(pdev); | |
2167 | pci_restore_state(pdev); | |
2168 | ||
2169 | /* After second error pci->state_saved is false, this | |
2170 | * resets it so EEH doesn't break. | |
2171 | */ | |
2172 | pci_save_state(pdev); | |
2173 | ||
2174 | pci_wake_from_d3(pdev, false); | |
2175 | ||
2176 | /* refresh hw_addr in case it was dropped */ | |
2177 | interface->hw.hw_addr = interface->uc_addr; | |
2178 | ||
2179 | interface->flags |= FM10K_FLAG_RESET_REQUESTED; | |
2180 | fm10k_service_event_schedule(interface); | |
2181 | ||
2182 | result = PCI_ERS_RESULT_RECOVERED; | |
2183 | } | |
2184 | ||
2185 | pci_cleanup_aer_uncorrect_error_status(pdev); | |
2186 | ||
2187 | return result; | |
2188 | } | |
2189 | ||
2190 | /** | |
2191 | * fm10k_io_resume - called when traffic can start flowing again. | |
2192 | * @pdev: Pointer to PCI device | |
2193 | * | |
2194 | * This callback is called when the error recovery driver tells us that | |
2195 | * its OK to resume normal operation. | |
2196 | */ | |
2197 | static void fm10k_io_resume(struct pci_dev *pdev) | |
2198 | { | |
2199 | struct fm10k_intfc *interface = pci_get_drvdata(pdev); | |
2200 | struct net_device *netdev = interface->netdev; | |
2201 | struct fm10k_hw *hw = &interface->hw; | |
2202 | int err = 0; | |
2203 | ||
2204 | /* reset hardware to known state */ | |
2205 | hw->mac.ops.init_hw(&interface->hw); | |
2206 | ||
2207 | /* reset statistics starting values */ | |
2208 | hw->mac.ops.rebind_hw_stats(hw, &interface->stats); | |
2209 | ||
2210 | /* reassociate interrupts */ | |
2211 | fm10k_mbx_request_irq(interface); | |
2212 | ||
a211e013 AD |
2213 | /* reset clock */ |
2214 | fm10k_ts_reset(interface); | |
2215 | ||
19ae1b3f AD |
2216 | if (netif_running(netdev)) |
2217 | err = fm10k_open(netdev); | |
2218 | ||
2219 | /* final check of hardware state before registering the interface */ | |
2220 | err = err ? : fm10k_hw_ready(interface); | |
2221 | ||
2222 | if (!err) | |
2223 | netif_device_attach(netdev); | |
2224 | } | |
2225 | ||
2226 | static const struct pci_error_handlers fm10k_err_handler = { | |
2227 | .error_detected = fm10k_io_error_detected, | |
2228 | .slot_reset = fm10k_io_slot_reset, | |
2229 | .resume = fm10k_io_resume, | |
2230 | }; | |
2231 | ||
b3890e30 AD |
2232 | static struct pci_driver fm10k_driver = { |
2233 | .name = fm10k_driver_name, | |
2234 | .id_table = fm10k_pci_tbl, | |
2235 | .probe = fm10k_probe, | |
2236 | .remove = fm10k_remove, | |
19ae1b3f AD |
2237 | #ifdef CONFIG_PM |
2238 | .suspend = fm10k_suspend, | |
2239 | .resume = fm10k_resume, | |
2240 | #endif | |
883a9ccb | 2241 | .sriov_configure = fm10k_iov_configure, |
19ae1b3f | 2242 | .err_handler = &fm10k_err_handler |
b3890e30 AD |
2243 | }; |
2244 | ||
2245 | /** | |
2246 | * fm10k_register_pci_driver - register driver interface | |
2247 | * | |
2248 | * This funciton is called on module load in order to register the driver. | |
2249 | **/ | |
2250 | int fm10k_register_pci_driver(void) | |
2251 | { | |
2252 | return pci_register_driver(&fm10k_driver); | |
2253 | } | |
2254 | ||
2255 | /** | |
2256 | * fm10k_unregister_pci_driver - unregister driver interface | |
2257 | * | |
2258 | * This funciton is called on module unload in order to remove the driver. | |
2259 | **/ | |
2260 | void fm10k_unregister_pci_driver(void) | |
2261 | { | |
2262 | pci_unregister_driver(&fm10k_driver); | |
2263 | } |