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MAINTAINERS: Add phy-miphy28lp.c and phy-miphy365x.c to ARCH/STI architecture
[deliverable/linux.git] / drivers / net / ethernet / intel / i40e / i40e_main.c
1 /*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2014 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
20 *
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 ******************************************************************************/
26
27 /* Local includes */
28 #include "i40e.h"
29 #include "i40e_diag.h"
30 #ifdef CONFIG_I40E_VXLAN
31 #include <net/vxlan.h>
32 #endif
33
34 const char i40e_driver_name[] = "i40e";
35 static const char i40e_driver_string[] =
36 "Intel(R) Ethernet Connection XL710 Network Driver";
37
38 #define DRV_KERN "-k"
39
40 #define DRV_VERSION_MAJOR 1
41 #define DRV_VERSION_MINOR 2
42 #define DRV_VERSION_BUILD 6
43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
44 __stringify(DRV_VERSION_MINOR) "." \
45 __stringify(DRV_VERSION_BUILD) DRV_KERN
46 const char i40e_driver_version_str[] = DRV_VERSION;
47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
48
49 /* a bit of forward declarations */
50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
52 static int i40e_add_vsi(struct i40e_vsi *vsi);
53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
60
61 /* i40e_pci_tbl - PCI Device ID Table
62 *
63 * Last entry must be all 0s
64 *
65 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
66 * Class, Class Mask, private data (not used) }
67 */
68 static const struct pci_device_id i40e_pci_tbl[] = {
69 {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
70 {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
71 {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
72 {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
73 {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
74 {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
75 {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
76 {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
77 {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
78 /* required last entry */
79 {0, }
80 };
81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
82
83 #define I40E_MAX_VF_COUNT 128
84 static int debug = -1;
85 module_param(debug, int, 0);
86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
87
88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
90 MODULE_LICENSE("GPL");
91 MODULE_VERSION(DRV_VERSION);
92
93 /**
94 * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
95 * @hw: pointer to the HW structure
96 * @mem: ptr to mem struct to fill out
97 * @size: size of memory requested
98 * @alignment: what to align the allocation to
99 **/
100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
101 u64 size, u32 alignment)
102 {
103 struct i40e_pf *pf = (struct i40e_pf *)hw->back;
104
105 mem->size = ALIGN(size, alignment);
106 mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
107 &mem->pa, GFP_KERNEL);
108 if (!mem->va)
109 return -ENOMEM;
110
111 return 0;
112 }
113
114 /**
115 * i40e_free_dma_mem_d - OS specific memory free for shared code
116 * @hw: pointer to the HW structure
117 * @mem: ptr to mem struct to free
118 **/
119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
120 {
121 struct i40e_pf *pf = (struct i40e_pf *)hw->back;
122
123 dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
124 mem->va = NULL;
125 mem->pa = 0;
126 mem->size = 0;
127
128 return 0;
129 }
130
131 /**
132 * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
133 * @hw: pointer to the HW structure
134 * @mem: ptr to mem struct to fill out
135 * @size: size of memory requested
136 **/
137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
138 u32 size)
139 {
140 mem->size = size;
141 mem->va = kzalloc(size, GFP_KERNEL);
142
143 if (!mem->va)
144 return -ENOMEM;
145
146 return 0;
147 }
148
149 /**
150 * i40e_free_virt_mem_d - OS specific memory free for shared code
151 * @hw: pointer to the HW structure
152 * @mem: ptr to mem struct to free
153 **/
154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
155 {
156 /* it's ok to kfree a NULL pointer */
157 kfree(mem->va);
158 mem->va = NULL;
159 mem->size = 0;
160
161 return 0;
162 }
163
164 /**
165 * i40e_get_lump - find a lump of free generic resource
166 * @pf: board private structure
167 * @pile: the pile of resource to search
168 * @needed: the number of items needed
169 * @id: an owner id to stick on the items assigned
170 *
171 * Returns the base item index of the lump, or negative for error
172 *
173 * The search_hint trick and lack of advanced fit-finding only work
174 * because we're highly likely to have all the same size lump requests.
175 * Linear search time and any fragmentation should be minimal.
176 **/
177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
178 u16 needed, u16 id)
179 {
180 int ret = -ENOMEM;
181 int i, j;
182
183 if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
184 dev_info(&pf->pdev->dev,
185 "param err: pile=%p needed=%d id=0x%04x\n",
186 pile, needed, id);
187 return -EINVAL;
188 }
189
190 /* start the linear search with an imperfect hint */
191 i = pile->search_hint;
192 while (i < pile->num_entries) {
193 /* skip already allocated entries */
194 if (pile->list[i] & I40E_PILE_VALID_BIT) {
195 i++;
196 continue;
197 }
198
199 /* do we have enough in this lump? */
200 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
201 if (pile->list[i+j] & I40E_PILE_VALID_BIT)
202 break;
203 }
204
205 if (j == needed) {
206 /* there was enough, so assign it to the requestor */
207 for (j = 0; j < needed; j++)
208 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
209 ret = i;
210 pile->search_hint = i + j;
211 break;
212 } else {
213 /* not enough, so skip over it and continue looking */
214 i += j;
215 }
216 }
217
218 return ret;
219 }
220
221 /**
222 * i40e_put_lump - return a lump of generic resource
223 * @pile: the pile of resource to search
224 * @index: the base item index
225 * @id: the owner id of the items assigned
226 *
227 * Returns the count of items in the lump
228 **/
229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
230 {
231 int valid_id = (id | I40E_PILE_VALID_BIT);
232 int count = 0;
233 int i;
234
235 if (!pile || index >= pile->num_entries)
236 return -EINVAL;
237
238 for (i = index;
239 i < pile->num_entries && pile->list[i] == valid_id;
240 i++) {
241 pile->list[i] = 0;
242 count++;
243 }
244
245 if (count && index < pile->search_hint)
246 pile->search_hint = index;
247
248 return count;
249 }
250
251 /**
252 * i40e_service_event_schedule - Schedule the service task to wake up
253 * @pf: board private structure
254 *
255 * If not already scheduled, this puts the task into the work queue
256 **/
257 static void i40e_service_event_schedule(struct i40e_pf *pf)
258 {
259 if (!test_bit(__I40E_DOWN, &pf->state) &&
260 !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
261 !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
262 schedule_work(&pf->service_task);
263 }
264
265 /**
266 * i40e_tx_timeout - Respond to a Tx Hang
267 * @netdev: network interface device structure
268 *
269 * If any port has noticed a Tx timeout, it is likely that the whole
270 * device is munged, not just the one netdev port, so go for the full
271 * reset.
272 **/
273 #ifdef I40E_FCOE
274 void i40e_tx_timeout(struct net_device *netdev)
275 #else
276 static void i40e_tx_timeout(struct net_device *netdev)
277 #endif
278 {
279 struct i40e_netdev_priv *np = netdev_priv(netdev);
280 struct i40e_vsi *vsi = np->vsi;
281 struct i40e_pf *pf = vsi->back;
282
283 pf->tx_timeout_count++;
284
285 if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
286 pf->tx_timeout_recovery_level = 1;
287 pf->tx_timeout_last_recovery = jiffies;
288 netdev_info(netdev, "tx_timeout recovery level %d\n",
289 pf->tx_timeout_recovery_level);
290
291 switch (pf->tx_timeout_recovery_level) {
292 case 0:
293 /* disable and re-enable queues for the VSI */
294 if (in_interrupt()) {
295 set_bit(__I40E_REINIT_REQUESTED, &pf->state);
296 set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
297 } else {
298 i40e_vsi_reinit_locked(vsi);
299 }
300 break;
301 case 1:
302 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
303 break;
304 case 2:
305 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
306 break;
307 case 3:
308 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
309 break;
310 default:
311 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
312 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
313 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
314 break;
315 }
316 i40e_service_event_schedule(pf);
317 pf->tx_timeout_recovery_level++;
318 }
319
320 /**
321 * i40e_release_rx_desc - Store the new tail and head values
322 * @rx_ring: ring to bump
323 * @val: new head index
324 **/
325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
326 {
327 rx_ring->next_to_use = val;
328
329 /* Force memory writes to complete before letting h/w
330 * know there are new descriptors to fetch. (Only
331 * applicable for weak-ordered memory model archs,
332 * such as IA-64).
333 */
334 wmb();
335 writel(val, rx_ring->tail);
336 }
337
338 /**
339 * i40e_get_vsi_stats_struct - Get System Network Statistics
340 * @vsi: the VSI we care about
341 *
342 * Returns the address of the device statistics structure.
343 * The statistics are actually updated from the service task.
344 **/
345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
346 {
347 return &vsi->net_stats;
348 }
349
350 /**
351 * i40e_get_netdev_stats_struct - Get statistics for netdev interface
352 * @netdev: network interface device structure
353 *
354 * Returns the address of the device statistics structure.
355 * The statistics are actually updated from the service task.
356 **/
357 #ifdef I40E_FCOE
358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
359 struct net_device *netdev,
360 struct rtnl_link_stats64 *stats)
361 #else
362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
363 struct net_device *netdev,
364 struct rtnl_link_stats64 *stats)
365 #endif
366 {
367 struct i40e_netdev_priv *np = netdev_priv(netdev);
368 struct i40e_ring *tx_ring, *rx_ring;
369 struct i40e_vsi *vsi = np->vsi;
370 struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
371 int i;
372
373 if (test_bit(__I40E_DOWN, &vsi->state))
374 return stats;
375
376 if (!vsi->tx_rings)
377 return stats;
378
379 rcu_read_lock();
380 for (i = 0; i < vsi->num_queue_pairs; i++) {
381 u64 bytes, packets;
382 unsigned int start;
383
384 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
385 if (!tx_ring)
386 continue;
387
388 do {
389 start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
390 packets = tx_ring->stats.packets;
391 bytes = tx_ring->stats.bytes;
392 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
393
394 stats->tx_packets += packets;
395 stats->tx_bytes += bytes;
396 rx_ring = &tx_ring[1];
397
398 do {
399 start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
400 packets = rx_ring->stats.packets;
401 bytes = rx_ring->stats.bytes;
402 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
403
404 stats->rx_packets += packets;
405 stats->rx_bytes += bytes;
406 }
407 rcu_read_unlock();
408
409 /* following stats updated by i40e_watchdog_subtask() */
410 stats->multicast = vsi_stats->multicast;
411 stats->tx_errors = vsi_stats->tx_errors;
412 stats->tx_dropped = vsi_stats->tx_dropped;
413 stats->rx_errors = vsi_stats->rx_errors;
414 stats->rx_crc_errors = vsi_stats->rx_crc_errors;
415 stats->rx_length_errors = vsi_stats->rx_length_errors;
416
417 return stats;
418 }
419
420 /**
421 * i40e_vsi_reset_stats - Resets all stats of the given vsi
422 * @vsi: the VSI to have its stats reset
423 **/
424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
425 {
426 struct rtnl_link_stats64 *ns;
427 int i;
428
429 if (!vsi)
430 return;
431
432 ns = i40e_get_vsi_stats_struct(vsi);
433 memset(ns, 0, sizeof(*ns));
434 memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
435 memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
436 memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
437 if (vsi->rx_rings && vsi->rx_rings[0]) {
438 for (i = 0; i < vsi->num_queue_pairs; i++) {
439 memset(&vsi->rx_rings[i]->stats, 0 ,
440 sizeof(vsi->rx_rings[i]->stats));
441 memset(&vsi->rx_rings[i]->rx_stats, 0 ,
442 sizeof(vsi->rx_rings[i]->rx_stats));
443 memset(&vsi->tx_rings[i]->stats, 0 ,
444 sizeof(vsi->tx_rings[i]->stats));
445 memset(&vsi->tx_rings[i]->tx_stats, 0,
446 sizeof(vsi->tx_rings[i]->tx_stats));
447 }
448 }
449 vsi->stat_offsets_loaded = false;
450 }
451
452 /**
453 * i40e_pf_reset_stats - Reset all of the stats for the given pf
454 * @pf: the PF to be reset
455 **/
456 void i40e_pf_reset_stats(struct i40e_pf *pf)
457 {
458 int i;
459
460 memset(&pf->stats, 0, sizeof(pf->stats));
461 memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
462 pf->stat_offsets_loaded = false;
463
464 for (i = 0; i < I40E_MAX_VEB; i++) {
465 if (pf->veb[i]) {
466 memset(&pf->veb[i]->stats, 0,
467 sizeof(pf->veb[i]->stats));
468 memset(&pf->veb[i]->stats_offsets, 0,
469 sizeof(pf->veb[i]->stats_offsets));
470 pf->veb[i]->stat_offsets_loaded = false;
471 }
472 }
473 }
474
475 /**
476 * i40e_stat_update48 - read and update a 48 bit stat from the chip
477 * @hw: ptr to the hardware info
478 * @hireg: the high 32 bit reg to read
479 * @loreg: the low 32 bit reg to read
480 * @offset_loaded: has the initial offset been loaded yet
481 * @offset: ptr to current offset value
482 * @stat: ptr to the stat
483 *
484 * Since the device stats are not reset at PFReset, they likely will not
485 * be zeroed when the driver starts. We'll save the first values read
486 * and use them as offsets to be subtracted from the raw values in order
487 * to report stats that count from zero. In the process, we also manage
488 * the potential roll-over.
489 **/
490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
491 bool offset_loaded, u64 *offset, u64 *stat)
492 {
493 u64 new_data;
494
495 if (hw->device_id == I40E_DEV_ID_QEMU) {
496 new_data = rd32(hw, loreg);
497 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
498 } else {
499 new_data = rd64(hw, loreg);
500 }
501 if (!offset_loaded)
502 *offset = new_data;
503 if (likely(new_data >= *offset))
504 *stat = new_data - *offset;
505 else
506 *stat = (new_data + ((u64)1 << 48)) - *offset;
507 *stat &= 0xFFFFFFFFFFFFULL;
508 }
509
510 /**
511 * i40e_stat_update32 - read and update a 32 bit stat from the chip
512 * @hw: ptr to the hardware info
513 * @reg: the hw reg to read
514 * @offset_loaded: has the initial offset been loaded yet
515 * @offset: ptr to current offset value
516 * @stat: ptr to the stat
517 **/
518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
519 bool offset_loaded, u64 *offset, u64 *stat)
520 {
521 u32 new_data;
522
523 new_data = rd32(hw, reg);
524 if (!offset_loaded)
525 *offset = new_data;
526 if (likely(new_data >= *offset))
527 *stat = (u32)(new_data - *offset);
528 else
529 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
530 }
531
532 /**
533 * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
534 * @vsi: the VSI to be updated
535 **/
536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
537 {
538 int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
539 struct i40e_pf *pf = vsi->back;
540 struct i40e_hw *hw = &pf->hw;
541 struct i40e_eth_stats *oes;
542 struct i40e_eth_stats *es; /* device's eth stats */
543
544 es = &vsi->eth_stats;
545 oes = &vsi->eth_stats_offsets;
546
547 /* Gather up the stats that the hw collects */
548 i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
549 vsi->stat_offsets_loaded,
550 &oes->tx_errors, &es->tx_errors);
551 i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
552 vsi->stat_offsets_loaded,
553 &oes->rx_discards, &es->rx_discards);
554 i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
555 vsi->stat_offsets_loaded,
556 &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
557 i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
558 vsi->stat_offsets_loaded,
559 &oes->tx_errors, &es->tx_errors);
560
561 i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
562 I40E_GLV_GORCL(stat_idx),
563 vsi->stat_offsets_loaded,
564 &oes->rx_bytes, &es->rx_bytes);
565 i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
566 I40E_GLV_UPRCL(stat_idx),
567 vsi->stat_offsets_loaded,
568 &oes->rx_unicast, &es->rx_unicast);
569 i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
570 I40E_GLV_MPRCL(stat_idx),
571 vsi->stat_offsets_loaded,
572 &oes->rx_multicast, &es->rx_multicast);
573 i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
574 I40E_GLV_BPRCL(stat_idx),
575 vsi->stat_offsets_loaded,
576 &oes->rx_broadcast, &es->rx_broadcast);
577
578 i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
579 I40E_GLV_GOTCL(stat_idx),
580 vsi->stat_offsets_loaded,
581 &oes->tx_bytes, &es->tx_bytes);
582 i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
583 I40E_GLV_UPTCL(stat_idx),
584 vsi->stat_offsets_loaded,
585 &oes->tx_unicast, &es->tx_unicast);
586 i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
587 I40E_GLV_MPTCL(stat_idx),
588 vsi->stat_offsets_loaded,
589 &oes->tx_multicast, &es->tx_multicast);
590 i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
591 I40E_GLV_BPTCL(stat_idx),
592 vsi->stat_offsets_loaded,
593 &oes->tx_broadcast, &es->tx_broadcast);
594 vsi->stat_offsets_loaded = true;
595 }
596
597 /**
598 * i40e_update_veb_stats - Update Switch component statistics
599 * @veb: the VEB being updated
600 **/
601 static void i40e_update_veb_stats(struct i40e_veb *veb)
602 {
603 struct i40e_pf *pf = veb->pf;
604 struct i40e_hw *hw = &pf->hw;
605 struct i40e_eth_stats *oes;
606 struct i40e_eth_stats *es; /* device's eth stats */
607 int idx = 0;
608
609 idx = veb->stats_idx;
610 es = &veb->stats;
611 oes = &veb->stats_offsets;
612
613 /* Gather up the stats that the hw collects */
614 i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
615 veb->stat_offsets_loaded,
616 &oes->tx_discards, &es->tx_discards);
617 if (hw->revision_id > 0)
618 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
619 veb->stat_offsets_loaded,
620 &oes->rx_unknown_protocol,
621 &es->rx_unknown_protocol);
622 i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
623 veb->stat_offsets_loaded,
624 &oes->rx_bytes, &es->rx_bytes);
625 i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
626 veb->stat_offsets_loaded,
627 &oes->rx_unicast, &es->rx_unicast);
628 i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
629 veb->stat_offsets_loaded,
630 &oes->rx_multicast, &es->rx_multicast);
631 i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
632 veb->stat_offsets_loaded,
633 &oes->rx_broadcast, &es->rx_broadcast);
634
635 i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
636 veb->stat_offsets_loaded,
637 &oes->tx_bytes, &es->tx_bytes);
638 i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
639 veb->stat_offsets_loaded,
640 &oes->tx_unicast, &es->tx_unicast);
641 i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
642 veb->stat_offsets_loaded,
643 &oes->tx_multicast, &es->tx_multicast);
644 i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
645 veb->stat_offsets_loaded,
646 &oes->tx_broadcast, &es->tx_broadcast);
647 veb->stat_offsets_loaded = true;
648 }
649
650 #ifdef I40E_FCOE
651 /**
652 * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
653 * @vsi: the VSI that is capable of doing FCoE
654 **/
655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
656 {
657 struct i40e_pf *pf = vsi->back;
658 struct i40e_hw *hw = &pf->hw;
659 struct i40e_fcoe_stats *ofs;
660 struct i40e_fcoe_stats *fs; /* device's eth stats */
661 int idx;
662
663 if (vsi->type != I40E_VSI_FCOE)
664 return;
665
666 idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
667 fs = &vsi->fcoe_stats;
668 ofs = &vsi->fcoe_stats_offsets;
669
670 i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
671 vsi->fcoe_stat_offsets_loaded,
672 &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
673 i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
674 vsi->fcoe_stat_offsets_loaded,
675 &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
676 i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
677 vsi->fcoe_stat_offsets_loaded,
678 &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
679 i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
680 vsi->fcoe_stat_offsets_loaded,
681 &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
682 i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
683 vsi->fcoe_stat_offsets_loaded,
684 &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
685 i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
686 vsi->fcoe_stat_offsets_loaded,
687 &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
688 i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
689 vsi->fcoe_stat_offsets_loaded,
690 &ofs->fcoe_last_error, &fs->fcoe_last_error);
691 i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
692 vsi->fcoe_stat_offsets_loaded,
693 &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
694
695 vsi->fcoe_stat_offsets_loaded = true;
696 }
697
698 #endif
699 /**
700 * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
701 * @pf: the corresponding PF
702 *
703 * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
704 **/
705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
706 {
707 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
708 struct i40e_hw_port_stats *nsd = &pf->stats;
709 struct i40e_hw *hw = &pf->hw;
710 u64 xoff = 0;
711 u16 i, v;
712
713 if ((hw->fc.current_mode != I40E_FC_FULL) &&
714 (hw->fc.current_mode != I40E_FC_RX_PAUSE))
715 return;
716
717 xoff = nsd->link_xoff_rx;
718 i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
719 pf->stat_offsets_loaded,
720 &osd->link_xoff_rx, &nsd->link_xoff_rx);
721
722 /* No new LFC xoff rx */
723 if (!(nsd->link_xoff_rx - xoff))
724 return;
725
726 /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
727 for (v = 0; v < pf->num_alloc_vsi; v++) {
728 struct i40e_vsi *vsi = pf->vsi[v];
729
730 if (!vsi || !vsi->tx_rings[0])
731 continue;
732
733 for (i = 0; i < vsi->num_queue_pairs; i++) {
734 struct i40e_ring *ring = vsi->tx_rings[i];
735 clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
736 }
737 }
738 }
739
740 /**
741 * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
742 * @pf: the corresponding PF
743 *
744 * Update the Rx XOFF counter (PAUSE frames) in PFC mode
745 **/
746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
747 {
748 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
749 struct i40e_hw_port_stats *nsd = &pf->stats;
750 bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
751 struct i40e_dcbx_config *dcb_cfg;
752 struct i40e_hw *hw = &pf->hw;
753 u16 i, v;
754 u8 tc;
755
756 dcb_cfg = &hw->local_dcbx_config;
757
758 /* See if DCB enabled with PFC TC */
759 if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
760 !(dcb_cfg->pfc.pfcenable)) {
761 i40e_update_link_xoff_rx(pf);
762 return;
763 }
764
765 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
766 u64 prio_xoff = nsd->priority_xoff_rx[i];
767 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
768 pf->stat_offsets_loaded,
769 &osd->priority_xoff_rx[i],
770 &nsd->priority_xoff_rx[i]);
771
772 /* No new PFC xoff rx */
773 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
774 continue;
775 /* Get the TC for given priority */
776 tc = dcb_cfg->etscfg.prioritytable[i];
777 xoff[tc] = true;
778 }
779
780 /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
781 for (v = 0; v < pf->num_alloc_vsi; v++) {
782 struct i40e_vsi *vsi = pf->vsi[v];
783
784 if (!vsi || !vsi->tx_rings[0])
785 continue;
786
787 for (i = 0; i < vsi->num_queue_pairs; i++) {
788 struct i40e_ring *ring = vsi->tx_rings[i];
789
790 tc = ring->dcb_tc;
791 if (xoff[tc])
792 clear_bit(__I40E_HANG_CHECK_ARMED,
793 &ring->state);
794 }
795 }
796 }
797
798 /**
799 * i40e_update_vsi_stats - Update the vsi statistics counters.
800 * @vsi: the VSI to be updated
801 *
802 * There are a few instances where we store the same stat in a
803 * couple of different structs. This is partly because we have
804 * the netdev stats that need to be filled out, which is slightly
805 * different from the "eth_stats" defined by the chip and used in
806 * VF communications. We sort it out here.
807 **/
808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
809 {
810 struct i40e_pf *pf = vsi->back;
811 struct rtnl_link_stats64 *ons;
812 struct rtnl_link_stats64 *ns; /* netdev stats */
813 struct i40e_eth_stats *oes;
814 struct i40e_eth_stats *es; /* device's eth stats */
815 u32 tx_restart, tx_busy;
816 struct i40e_ring *p;
817 u32 rx_page, rx_buf;
818 u64 bytes, packets;
819 unsigned int start;
820 u64 rx_p, rx_b;
821 u64 tx_p, tx_b;
822 u16 q;
823
824 if (test_bit(__I40E_DOWN, &vsi->state) ||
825 test_bit(__I40E_CONFIG_BUSY, &pf->state))
826 return;
827
828 ns = i40e_get_vsi_stats_struct(vsi);
829 ons = &vsi->net_stats_offsets;
830 es = &vsi->eth_stats;
831 oes = &vsi->eth_stats_offsets;
832
833 /* Gather up the netdev and vsi stats that the driver collects
834 * on the fly during packet processing
835 */
836 rx_b = rx_p = 0;
837 tx_b = tx_p = 0;
838 tx_restart = tx_busy = 0;
839 rx_page = 0;
840 rx_buf = 0;
841 rcu_read_lock();
842 for (q = 0; q < vsi->num_queue_pairs; q++) {
843 /* locate Tx ring */
844 p = ACCESS_ONCE(vsi->tx_rings[q]);
845
846 do {
847 start = u64_stats_fetch_begin_irq(&p->syncp);
848 packets = p->stats.packets;
849 bytes = p->stats.bytes;
850 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
851 tx_b += bytes;
852 tx_p += packets;
853 tx_restart += p->tx_stats.restart_queue;
854 tx_busy += p->tx_stats.tx_busy;
855
856 /* Rx queue is part of the same block as Tx queue */
857 p = &p[1];
858 do {
859 start = u64_stats_fetch_begin_irq(&p->syncp);
860 packets = p->stats.packets;
861 bytes = p->stats.bytes;
862 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
863 rx_b += bytes;
864 rx_p += packets;
865 rx_buf += p->rx_stats.alloc_buff_failed;
866 rx_page += p->rx_stats.alloc_page_failed;
867 }
868 rcu_read_unlock();
869 vsi->tx_restart = tx_restart;
870 vsi->tx_busy = tx_busy;
871 vsi->rx_page_failed = rx_page;
872 vsi->rx_buf_failed = rx_buf;
873
874 ns->rx_packets = rx_p;
875 ns->rx_bytes = rx_b;
876 ns->tx_packets = tx_p;
877 ns->tx_bytes = tx_b;
878
879 /* update netdev stats from eth stats */
880 i40e_update_eth_stats(vsi);
881 ons->tx_errors = oes->tx_errors;
882 ns->tx_errors = es->tx_errors;
883 ons->multicast = oes->rx_multicast;
884 ns->multicast = es->rx_multicast;
885 ons->rx_dropped = oes->rx_discards;
886 ns->rx_dropped = es->rx_discards;
887 ons->tx_dropped = oes->tx_discards;
888 ns->tx_dropped = es->tx_discards;
889
890 /* pull in a couple PF stats if this is the main vsi */
891 if (vsi == pf->vsi[pf->lan_vsi]) {
892 ns->rx_crc_errors = pf->stats.crc_errors;
893 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
894 ns->rx_length_errors = pf->stats.rx_length_errors;
895 }
896 }
897
898 /**
899 * i40e_update_pf_stats - Update the pf statistics counters.
900 * @pf: the PF to be updated
901 **/
902 static void i40e_update_pf_stats(struct i40e_pf *pf)
903 {
904 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
905 struct i40e_hw_port_stats *nsd = &pf->stats;
906 struct i40e_hw *hw = &pf->hw;
907 u32 val;
908 int i;
909
910 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
911 I40E_GLPRT_GORCL(hw->port),
912 pf->stat_offsets_loaded,
913 &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
914 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
915 I40E_GLPRT_GOTCL(hw->port),
916 pf->stat_offsets_loaded,
917 &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
918 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
919 pf->stat_offsets_loaded,
920 &osd->eth.rx_discards,
921 &nsd->eth.rx_discards);
922 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
923 pf->stat_offsets_loaded,
924 &osd->eth.tx_discards,
925 &nsd->eth.tx_discards);
926
927 i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
928 I40E_GLPRT_UPRCL(hw->port),
929 pf->stat_offsets_loaded,
930 &osd->eth.rx_unicast,
931 &nsd->eth.rx_unicast);
932 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
933 I40E_GLPRT_MPRCL(hw->port),
934 pf->stat_offsets_loaded,
935 &osd->eth.rx_multicast,
936 &nsd->eth.rx_multicast);
937 i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
938 I40E_GLPRT_BPRCL(hw->port),
939 pf->stat_offsets_loaded,
940 &osd->eth.rx_broadcast,
941 &nsd->eth.rx_broadcast);
942 i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
943 I40E_GLPRT_UPTCL(hw->port),
944 pf->stat_offsets_loaded,
945 &osd->eth.tx_unicast,
946 &nsd->eth.tx_unicast);
947 i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
948 I40E_GLPRT_MPTCL(hw->port),
949 pf->stat_offsets_loaded,
950 &osd->eth.tx_multicast,
951 &nsd->eth.tx_multicast);
952 i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
953 I40E_GLPRT_BPTCL(hw->port),
954 pf->stat_offsets_loaded,
955 &osd->eth.tx_broadcast,
956 &nsd->eth.tx_broadcast);
957
958 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
959 pf->stat_offsets_loaded,
960 &osd->tx_dropped_link_down,
961 &nsd->tx_dropped_link_down);
962
963 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
964 pf->stat_offsets_loaded,
965 &osd->crc_errors, &nsd->crc_errors);
966
967 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
968 pf->stat_offsets_loaded,
969 &osd->illegal_bytes, &nsd->illegal_bytes);
970
971 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
972 pf->stat_offsets_loaded,
973 &osd->mac_local_faults,
974 &nsd->mac_local_faults);
975 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
976 pf->stat_offsets_loaded,
977 &osd->mac_remote_faults,
978 &nsd->mac_remote_faults);
979
980 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
981 pf->stat_offsets_loaded,
982 &osd->rx_length_errors,
983 &nsd->rx_length_errors);
984
985 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
986 pf->stat_offsets_loaded,
987 &osd->link_xon_rx, &nsd->link_xon_rx);
988 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
989 pf->stat_offsets_loaded,
990 &osd->link_xon_tx, &nsd->link_xon_tx);
991 i40e_update_prio_xoff_rx(pf); /* handles I40E_GLPRT_LXOFFRXC */
992 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
993 pf->stat_offsets_loaded,
994 &osd->link_xoff_tx, &nsd->link_xoff_tx);
995
996 for (i = 0; i < 8; i++) {
997 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
998 pf->stat_offsets_loaded,
999 &osd->priority_xon_rx[i],
1000 &nsd->priority_xon_rx[i]);
1001 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1002 pf->stat_offsets_loaded,
1003 &osd->priority_xon_tx[i],
1004 &nsd->priority_xon_tx[i]);
1005 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1006 pf->stat_offsets_loaded,
1007 &osd->priority_xoff_tx[i],
1008 &nsd->priority_xoff_tx[i]);
1009 i40e_stat_update32(hw,
1010 I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1011 pf->stat_offsets_loaded,
1012 &osd->priority_xon_2_xoff[i],
1013 &nsd->priority_xon_2_xoff[i]);
1014 }
1015
1016 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1017 I40E_GLPRT_PRC64L(hw->port),
1018 pf->stat_offsets_loaded,
1019 &osd->rx_size_64, &nsd->rx_size_64);
1020 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1021 I40E_GLPRT_PRC127L(hw->port),
1022 pf->stat_offsets_loaded,
1023 &osd->rx_size_127, &nsd->rx_size_127);
1024 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1025 I40E_GLPRT_PRC255L(hw->port),
1026 pf->stat_offsets_loaded,
1027 &osd->rx_size_255, &nsd->rx_size_255);
1028 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1029 I40E_GLPRT_PRC511L(hw->port),
1030 pf->stat_offsets_loaded,
1031 &osd->rx_size_511, &nsd->rx_size_511);
1032 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1033 I40E_GLPRT_PRC1023L(hw->port),
1034 pf->stat_offsets_loaded,
1035 &osd->rx_size_1023, &nsd->rx_size_1023);
1036 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1037 I40E_GLPRT_PRC1522L(hw->port),
1038 pf->stat_offsets_loaded,
1039 &osd->rx_size_1522, &nsd->rx_size_1522);
1040 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1041 I40E_GLPRT_PRC9522L(hw->port),
1042 pf->stat_offsets_loaded,
1043 &osd->rx_size_big, &nsd->rx_size_big);
1044
1045 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1046 I40E_GLPRT_PTC64L(hw->port),
1047 pf->stat_offsets_loaded,
1048 &osd->tx_size_64, &nsd->tx_size_64);
1049 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1050 I40E_GLPRT_PTC127L(hw->port),
1051 pf->stat_offsets_loaded,
1052 &osd->tx_size_127, &nsd->tx_size_127);
1053 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1054 I40E_GLPRT_PTC255L(hw->port),
1055 pf->stat_offsets_loaded,
1056 &osd->tx_size_255, &nsd->tx_size_255);
1057 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1058 I40E_GLPRT_PTC511L(hw->port),
1059 pf->stat_offsets_loaded,
1060 &osd->tx_size_511, &nsd->tx_size_511);
1061 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1062 I40E_GLPRT_PTC1023L(hw->port),
1063 pf->stat_offsets_loaded,
1064 &osd->tx_size_1023, &nsd->tx_size_1023);
1065 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1066 I40E_GLPRT_PTC1522L(hw->port),
1067 pf->stat_offsets_loaded,
1068 &osd->tx_size_1522, &nsd->tx_size_1522);
1069 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1070 I40E_GLPRT_PTC9522L(hw->port),
1071 pf->stat_offsets_loaded,
1072 &osd->tx_size_big, &nsd->tx_size_big);
1073
1074 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1075 pf->stat_offsets_loaded,
1076 &osd->rx_undersize, &nsd->rx_undersize);
1077 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1078 pf->stat_offsets_loaded,
1079 &osd->rx_fragments, &nsd->rx_fragments);
1080 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1081 pf->stat_offsets_loaded,
1082 &osd->rx_oversize, &nsd->rx_oversize);
1083 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1084 pf->stat_offsets_loaded,
1085 &osd->rx_jabber, &nsd->rx_jabber);
1086
1087 /* FDIR stats */
1088 i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1089 pf->stat_offsets_loaded,
1090 &osd->fd_atr_match, &nsd->fd_atr_match);
1091 i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1092 pf->stat_offsets_loaded,
1093 &osd->fd_sb_match, &nsd->fd_sb_match);
1094
1095 val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096 nsd->tx_lpi_status =
1097 (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098 I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099 nsd->rx_lpi_status =
1100 (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101 I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102 i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103 pf->stat_offsets_loaded,
1104 &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105 i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106 pf->stat_offsets_loaded,
1107 &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109 pf->stat_offsets_loaded = true;
1110 }
1111
1112 /**
1113 * i40e_update_stats - Update the various statistics counters.
1114 * @vsi: the VSI to be updated
1115 *
1116 * Update the various stats for this VSI and its related entities.
1117 **/
1118 void i40e_update_stats(struct i40e_vsi *vsi)
1119 {
1120 struct i40e_pf *pf = vsi->back;
1121
1122 if (vsi == pf->vsi[pf->lan_vsi])
1123 i40e_update_pf_stats(pf);
1124
1125 i40e_update_vsi_stats(vsi);
1126 #ifdef I40E_FCOE
1127 i40e_update_fcoe_stats(vsi);
1128 #endif
1129 }
1130
1131 /**
1132 * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133 * @vsi: the VSI to be searched
1134 * @macaddr: the MAC address
1135 * @vlan: the vlan
1136 * @is_vf: make sure its a vf filter, else doesn't matter
1137 * @is_netdev: make sure its a netdev filter, else doesn't matter
1138 *
1139 * Returns ptr to the filter object or NULL
1140 **/
1141 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1142 u8 *macaddr, s16 vlan,
1143 bool is_vf, bool is_netdev)
1144 {
1145 struct i40e_mac_filter *f;
1146
1147 if (!vsi || !macaddr)
1148 return NULL;
1149
1150 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1151 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1152 (vlan == f->vlan) &&
1153 (!is_vf || f->is_vf) &&
1154 (!is_netdev || f->is_netdev))
1155 return f;
1156 }
1157 return NULL;
1158 }
1159
1160 /**
1161 * i40e_find_mac - Find a mac addr in the macvlan filters list
1162 * @vsi: the VSI to be searched
1163 * @macaddr: the MAC address we are searching for
1164 * @is_vf: make sure its a vf filter, else doesn't matter
1165 * @is_netdev: make sure its a netdev filter, else doesn't matter
1166 *
1167 * Returns the first filter with the provided MAC address or NULL if
1168 * MAC address was not found
1169 **/
1170 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1171 bool is_vf, bool is_netdev)
1172 {
1173 struct i40e_mac_filter *f;
1174
1175 if (!vsi || !macaddr)
1176 return NULL;
1177
1178 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1179 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1180 (!is_vf || f->is_vf) &&
1181 (!is_netdev || f->is_netdev))
1182 return f;
1183 }
1184 return NULL;
1185 }
1186
1187 /**
1188 * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189 * @vsi: the VSI to be searched
1190 *
1191 * Returns true if VSI is in vlan mode or false otherwise
1192 **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195 struct i40e_mac_filter *f;
1196
1197 /* Only -1 for all the filters denotes not in vlan mode
1198 * so we have to go through all the list in order to make sure
1199 */
1200 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1201 if (f->vlan >= 0)
1202 return true;
1203 }
1204
1205 return false;
1206 }
1207
1208 /**
1209 * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1210 * @vsi: the VSI to be searched
1211 * @macaddr: the mac address to be filtered
1212 * @is_vf: true if it is a vf
1213 * @is_netdev: true if it is a netdev
1214 *
1215 * Goes through all the macvlan filters and adds a
1216 * macvlan filter for each unique vlan that already exists
1217 *
1218 * Returns first filter found on success, else NULL
1219 **/
1220 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1221 bool is_vf, bool is_netdev)
1222 {
1223 struct i40e_mac_filter *f;
1224
1225 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1227 is_vf, is_netdev)) {
1228 if (!i40e_add_filter(vsi, macaddr, f->vlan,
1229 is_vf, is_netdev))
1230 return NULL;
1231 }
1232 }
1233
1234 return list_first_entry_or_null(&vsi->mac_filter_list,
1235 struct i40e_mac_filter, list);
1236 }
1237
1238 /**
1239 * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1240 * @vsi: the PF Main VSI - inappropriate for any other VSI
1241 * @macaddr: the MAC address
1242 *
1243 * Some older firmware configurations set up a default promiscuous VLAN
1244 * filter that needs to be removed.
1245 **/
1246 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1247 {
1248 struct i40e_aqc_remove_macvlan_element_data element;
1249 struct i40e_pf *pf = vsi->back;
1250 i40e_status aq_ret;
1251
1252 /* Only appropriate for the PF main VSI */
1253 if (vsi->type != I40E_VSI_MAIN)
1254 return -EINVAL;
1255
1256 memset(&element, 0, sizeof(element));
1257 ether_addr_copy(element.mac_addr, macaddr);
1258 element.vlan_tag = 0;
1259 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1260 I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1261 aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1262 if (aq_ret)
1263 return -ENOENT;
1264
1265 return 0;
1266 }
1267
1268 /**
1269 * i40e_add_filter - Add a mac/vlan filter to the VSI
1270 * @vsi: the VSI to be searched
1271 * @macaddr: the MAC address
1272 * @vlan: the vlan
1273 * @is_vf: make sure its a vf filter, else doesn't matter
1274 * @is_netdev: make sure its a netdev filter, else doesn't matter
1275 *
1276 * Returns ptr to the filter object or NULL when no memory available.
1277 **/
1278 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1279 u8 *macaddr, s16 vlan,
1280 bool is_vf, bool is_netdev)
1281 {
1282 struct i40e_mac_filter *f;
1283
1284 if (!vsi || !macaddr)
1285 return NULL;
1286
1287 f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1288 if (!f) {
1289 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1290 if (!f)
1291 goto add_filter_out;
1292
1293 ether_addr_copy(f->macaddr, macaddr);
1294 f->vlan = vlan;
1295 f->changed = true;
1296
1297 INIT_LIST_HEAD(&f->list);
1298 list_add(&f->list, &vsi->mac_filter_list);
1299 }
1300
1301 /* increment counter and add a new flag if needed */
1302 if (is_vf) {
1303 if (!f->is_vf) {
1304 f->is_vf = true;
1305 f->counter++;
1306 }
1307 } else if (is_netdev) {
1308 if (!f->is_netdev) {
1309 f->is_netdev = true;
1310 f->counter++;
1311 }
1312 } else {
1313 f->counter++;
1314 }
1315
1316 /* changed tells sync_filters_subtask to
1317 * push the filter down to the firmware
1318 */
1319 if (f->changed) {
1320 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1321 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1322 }
1323
1324 add_filter_out:
1325 return f;
1326 }
1327
1328 /**
1329 * i40e_del_filter - Remove a mac/vlan filter from the VSI
1330 * @vsi: the VSI to be searched
1331 * @macaddr: the MAC address
1332 * @vlan: the vlan
1333 * @is_vf: make sure it's a vf filter, else doesn't matter
1334 * @is_netdev: make sure it's a netdev filter, else doesn't matter
1335 **/
1336 void i40e_del_filter(struct i40e_vsi *vsi,
1337 u8 *macaddr, s16 vlan,
1338 bool is_vf, bool is_netdev)
1339 {
1340 struct i40e_mac_filter *f;
1341
1342 if (!vsi || !macaddr)
1343 return;
1344
1345 f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1346 if (!f || f->counter == 0)
1347 return;
1348
1349 if (is_vf) {
1350 if (f->is_vf) {
1351 f->is_vf = false;
1352 f->counter--;
1353 }
1354 } else if (is_netdev) {
1355 if (f->is_netdev) {
1356 f->is_netdev = false;
1357 f->counter--;
1358 }
1359 } else {
1360 /* make sure we don't remove a filter in use by vf or netdev */
1361 int min_f = 0;
1362 min_f += (f->is_vf ? 1 : 0);
1363 min_f += (f->is_netdev ? 1 : 0);
1364
1365 if (f->counter > min_f)
1366 f->counter--;
1367 }
1368
1369 /* counter == 0 tells sync_filters_subtask to
1370 * remove the filter from the firmware's list
1371 */
1372 if (f->counter == 0) {
1373 f->changed = true;
1374 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1375 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1376 }
1377 }
1378
1379 /**
1380 * i40e_set_mac - NDO callback to set mac address
1381 * @netdev: network interface device structure
1382 * @p: pointer to an address structure
1383 *
1384 * Returns 0 on success, negative on failure
1385 **/
1386 #ifdef I40E_FCOE
1387 int i40e_set_mac(struct net_device *netdev, void *p)
1388 #else
1389 static int i40e_set_mac(struct net_device *netdev, void *p)
1390 #endif
1391 {
1392 struct i40e_netdev_priv *np = netdev_priv(netdev);
1393 struct i40e_vsi *vsi = np->vsi;
1394 struct i40e_pf *pf = vsi->back;
1395 struct i40e_hw *hw = &pf->hw;
1396 struct sockaddr *addr = p;
1397 struct i40e_mac_filter *f;
1398
1399 if (!is_valid_ether_addr(addr->sa_data))
1400 return -EADDRNOTAVAIL;
1401
1402 if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1403 netdev_info(netdev, "already using mac address %pM\n",
1404 addr->sa_data);
1405 return 0;
1406 }
1407
1408 if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1409 test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1410 return -EADDRNOTAVAIL;
1411
1412 if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1413 netdev_info(netdev, "returning to hw mac address %pM\n",
1414 hw->mac.addr);
1415 else
1416 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1417
1418 if (vsi->type == I40E_VSI_MAIN) {
1419 i40e_status ret;
1420 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1421 I40E_AQC_WRITE_TYPE_LAA_WOL,
1422 addr->sa_data, NULL);
1423 if (ret) {
1424 netdev_info(netdev,
1425 "Addr change for Main VSI failed: %d\n",
1426 ret);
1427 return -EADDRNOTAVAIL;
1428 }
1429 }
1430
1431 if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1432 struct i40e_aqc_remove_macvlan_element_data element;
1433
1434 memset(&element, 0, sizeof(element));
1435 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1436 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1437 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1438 } else {
1439 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1440 false, false);
1441 }
1442
1443 if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1444 struct i40e_aqc_add_macvlan_element_data element;
1445
1446 memset(&element, 0, sizeof(element));
1447 ether_addr_copy(element.mac_addr, hw->mac.addr);
1448 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1449 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450 } else {
1451 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1452 false, false);
1453 if (f)
1454 f->is_laa = true;
1455 }
1456
1457 i40e_sync_vsi_filters(vsi);
1458 ether_addr_copy(netdev->dev_addr, addr->sa_data);
1459
1460 return 0;
1461 }
1462
1463 /**
1464 * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1465 * @vsi: the VSI being setup
1466 * @ctxt: VSI context structure
1467 * @enabled_tc: Enabled TCs bitmap
1468 * @is_add: True if called before Add VSI
1469 *
1470 * Setup VSI queue mapping for enabled traffic classes.
1471 **/
1472 #ifdef I40E_FCOE
1473 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474 struct i40e_vsi_context *ctxt,
1475 u8 enabled_tc,
1476 bool is_add)
1477 #else
1478 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1479 struct i40e_vsi_context *ctxt,
1480 u8 enabled_tc,
1481 bool is_add)
1482 #endif
1483 {
1484 struct i40e_pf *pf = vsi->back;
1485 u16 sections = 0;
1486 u8 netdev_tc = 0;
1487 u16 numtc = 0;
1488 u16 qcount;
1489 u8 offset;
1490 u16 qmap;
1491 int i;
1492 u16 num_tc_qps = 0;
1493
1494 sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1495 offset = 0;
1496
1497 if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1498 /* Find numtc from enabled TC bitmap */
1499 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1500 if (enabled_tc & (1 << i)) /* TC is enabled */
1501 numtc++;
1502 }
1503 if (!numtc) {
1504 dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1505 numtc = 1;
1506 }
1507 } else {
1508 /* At least TC0 is enabled in case of non-DCB case */
1509 numtc = 1;
1510 }
1511
1512 vsi->tc_config.numtc = numtc;
1513 vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1514 /* Number of queues per enabled TC */
1515 num_tc_qps = vsi->alloc_queue_pairs/numtc;
1516 num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518 /* Setup queue offset/count for all TCs for given VSI */
1519 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520 /* See if the given TC is enabled for the given VSI */
1521 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522 int pow, num_qps;
1523
1524 switch (vsi->type) {
1525 case I40E_VSI_MAIN:
1526 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527 break;
1528 #ifdef I40E_FCOE
1529 case I40E_VSI_FCOE:
1530 qcount = num_tc_qps;
1531 break;
1532 #endif
1533 case I40E_VSI_FDIR:
1534 case I40E_VSI_SRIOV:
1535 case I40E_VSI_VMDQ2:
1536 default:
1537 qcount = num_tc_qps;
1538 WARN_ON(i != 0);
1539 break;
1540 }
1541 vsi->tc_config.tc_info[i].qoffset = offset;
1542 vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544 /* find the power-of-2 of the number of queue pairs */
1545 num_qps = qcount;
1546 pow = 0;
1547 while (num_qps && ((1 << pow) < qcount)) {
1548 pow++;
1549 num_qps >>= 1;
1550 }
1551
1552 vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553 qmap =
1554 (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557 offset += qcount;
1558 } else {
1559 /* TC is not enabled so set the offset to
1560 * default queue and allocate one queue
1561 * for the given TC.
1562 */
1563 vsi->tc_config.tc_info[i].qoffset = 0;
1564 vsi->tc_config.tc_info[i].qcount = 1;
1565 vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567 qmap = 0;
1568 }
1569 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570 }
1571
1572 /* Set actual Tx/Rx queue pairs */
1573 vsi->num_queue_pairs = offset;
1574
1575 /* Scheduler section valid can only be set for ADD VSI */
1576 if (is_add) {
1577 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1578
1579 ctxt->info.up_enable_bits = enabled_tc;
1580 }
1581 if (vsi->type == I40E_VSI_SRIOV) {
1582 ctxt->info.mapping_flags |=
1583 cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1584 for (i = 0; i < vsi->num_queue_pairs; i++)
1585 ctxt->info.queue_mapping[i] =
1586 cpu_to_le16(vsi->base_queue + i);
1587 } else {
1588 ctxt->info.mapping_flags |=
1589 cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1590 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1591 }
1592 ctxt->info.valid_sections |= cpu_to_le16(sections);
1593 }
1594
1595 /**
1596 * i40e_set_rx_mode - NDO callback to set the netdev filters
1597 * @netdev: network interface device structure
1598 **/
1599 #ifdef I40E_FCOE
1600 void i40e_set_rx_mode(struct net_device *netdev)
1601 #else
1602 static void i40e_set_rx_mode(struct net_device *netdev)
1603 #endif
1604 {
1605 struct i40e_netdev_priv *np = netdev_priv(netdev);
1606 struct i40e_mac_filter *f, *ftmp;
1607 struct i40e_vsi *vsi = np->vsi;
1608 struct netdev_hw_addr *uca;
1609 struct netdev_hw_addr *mca;
1610 struct netdev_hw_addr *ha;
1611
1612 /* add addr if not already in the filter list */
1613 netdev_for_each_uc_addr(uca, netdev) {
1614 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1615 if (i40e_is_vsi_in_vlan(vsi))
1616 i40e_put_mac_in_vlan(vsi, uca->addr,
1617 false, true);
1618 else
1619 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1620 false, true);
1621 }
1622 }
1623
1624 netdev_for_each_mc_addr(mca, netdev) {
1625 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1626 if (i40e_is_vsi_in_vlan(vsi))
1627 i40e_put_mac_in_vlan(vsi, mca->addr,
1628 false, true);
1629 else
1630 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1631 false, true);
1632 }
1633 }
1634
1635 /* remove filter if not in netdev list */
1636 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1637 bool found = false;
1638
1639 if (!f->is_netdev)
1640 continue;
1641
1642 if (is_multicast_ether_addr(f->macaddr)) {
1643 netdev_for_each_mc_addr(mca, netdev) {
1644 if (ether_addr_equal(mca->addr, f->macaddr)) {
1645 found = true;
1646 break;
1647 }
1648 }
1649 } else {
1650 netdev_for_each_uc_addr(uca, netdev) {
1651 if (ether_addr_equal(uca->addr, f->macaddr)) {
1652 found = true;
1653 break;
1654 }
1655 }
1656
1657 for_each_dev_addr(netdev, ha) {
1658 if (ether_addr_equal(ha->addr, f->macaddr)) {
1659 found = true;
1660 break;
1661 }
1662 }
1663 }
1664 if (!found)
1665 i40e_del_filter(
1666 vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1667 }
1668
1669 /* check for other flag changes */
1670 if (vsi->current_netdev_flags != vsi->netdev->flags) {
1671 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1672 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1673 }
1674 }
1675
1676 /**
1677 * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1678 * @vsi: ptr to the VSI
1679 *
1680 * Push any outstanding VSI filter changes through the AdminQ.
1681 *
1682 * Returns 0 or error value
1683 **/
1684 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1685 {
1686 struct i40e_mac_filter *f, *ftmp;
1687 bool promisc_forced_on = false;
1688 bool add_happened = false;
1689 int filter_list_len = 0;
1690 u32 changed_flags = 0;
1691 i40e_status aq_ret = 0;
1692 struct i40e_pf *pf;
1693 int num_add = 0;
1694 int num_del = 0;
1695 u16 cmd_flags;
1696
1697 /* empty array typed pointers, kcalloc later */
1698 struct i40e_aqc_add_macvlan_element_data *add_list;
1699 struct i40e_aqc_remove_macvlan_element_data *del_list;
1700
1701 while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1702 usleep_range(1000, 2000);
1703 pf = vsi->back;
1704
1705 if (vsi->netdev) {
1706 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1707 vsi->current_netdev_flags = vsi->netdev->flags;
1708 }
1709
1710 if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1711 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1712
1713 filter_list_len = pf->hw.aq.asq_buf_size /
1714 sizeof(struct i40e_aqc_remove_macvlan_element_data);
1715 del_list = kcalloc(filter_list_len,
1716 sizeof(struct i40e_aqc_remove_macvlan_element_data),
1717 GFP_KERNEL);
1718 if (!del_list)
1719 return -ENOMEM;
1720
1721 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722 if (!f->changed)
1723 continue;
1724
1725 if (f->counter != 0)
1726 continue;
1727 f->changed = false;
1728 cmd_flags = 0;
1729
1730 /* add to delete list */
1731 ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1732 del_list[num_del].vlan_tag =
1733 cpu_to_le16((u16)(f->vlan ==
1734 I40E_VLAN_ANY ? 0 : f->vlan));
1735
1736 cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1737 del_list[num_del].flags = cmd_flags;
1738 num_del++;
1739
1740 /* unlink from filter list */
1741 list_del(&f->list);
1742 kfree(f);
1743
1744 /* flush a full buffer */
1745 if (num_del == filter_list_len) {
1746 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1747 vsi->seid, del_list, num_del,
1748 NULL);
1749 num_del = 0;
1750 memset(del_list, 0, sizeof(*del_list));
1751
1752 if (aq_ret &&
1753 pf->hw.aq.asq_last_status !=
1754 I40E_AQ_RC_ENOENT)
1755 dev_info(&pf->pdev->dev,
1756 "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1757 aq_ret,
1758 pf->hw.aq.asq_last_status);
1759 }
1760 }
1761 if (num_del) {
1762 aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1763 del_list, num_del, NULL);
1764 num_del = 0;
1765
1766 if (aq_ret &&
1767 pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1768 dev_info(&pf->pdev->dev,
1769 "ignoring delete macvlan error, err %d, aq_err %d\n",
1770 aq_ret, pf->hw.aq.asq_last_status);
1771 }
1772
1773 kfree(del_list);
1774 del_list = NULL;
1775
1776 /* do all the adds now */
1777 filter_list_len = pf->hw.aq.asq_buf_size /
1778 sizeof(struct i40e_aqc_add_macvlan_element_data),
1779 add_list = kcalloc(filter_list_len,
1780 sizeof(struct i40e_aqc_add_macvlan_element_data),
1781 GFP_KERNEL);
1782 if (!add_list)
1783 return -ENOMEM;
1784
1785 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1786 if (!f->changed)
1787 continue;
1788
1789 if (f->counter == 0)
1790 continue;
1791 f->changed = false;
1792 add_happened = true;
1793 cmd_flags = 0;
1794
1795 /* add to add array */
1796 ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1797 add_list[num_add].vlan_tag =
1798 cpu_to_le16(
1799 (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1800 add_list[num_add].queue_number = 0;
1801
1802 cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1803 add_list[num_add].flags = cpu_to_le16(cmd_flags);
1804 num_add++;
1805
1806 /* flush a full buffer */
1807 if (num_add == filter_list_len) {
1808 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1809 add_list, num_add,
1810 NULL);
1811 num_add = 0;
1812
1813 if (aq_ret)
1814 break;
1815 memset(add_list, 0, sizeof(*add_list));
1816 }
1817 }
1818 if (num_add) {
1819 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1820 add_list, num_add, NULL);
1821 num_add = 0;
1822 }
1823 kfree(add_list);
1824 add_list = NULL;
1825
1826 if (add_happened && aq_ret &&
1827 pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1828 dev_info(&pf->pdev->dev,
1829 "add filter failed, err %d, aq_err %d\n",
1830 aq_ret, pf->hw.aq.asq_last_status);
1831 if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1832 !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833 &vsi->state)) {
1834 promisc_forced_on = true;
1835 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1836 &vsi->state);
1837 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1838 }
1839 }
1840 }
1841
1842 /* check for changes in promiscuous modes */
1843 if (changed_flags & IFF_ALLMULTI) {
1844 bool cur_multipromisc;
1845 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1846 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1847 vsi->seid,
1848 cur_multipromisc,
1849 NULL);
1850 if (aq_ret)
1851 dev_info(&pf->pdev->dev,
1852 "set multi promisc failed, err %d, aq_err %d\n",
1853 aq_ret, pf->hw.aq.asq_last_status);
1854 }
1855 if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1856 bool cur_promisc;
1857 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1858 test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859 &vsi->state));
1860 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1861 vsi->seid,
1862 cur_promisc, NULL);
1863 if (aq_ret)
1864 dev_info(&pf->pdev->dev,
1865 "set uni promisc failed, err %d, aq_err %d\n",
1866 aq_ret, pf->hw.aq.asq_last_status);
1867 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1868 vsi->seid,
1869 cur_promisc, NULL);
1870 if (aq_ret)
1871 dev_info(&pf->pdev->dev,
1872 "set brdcast promisc failed, err %d, aq_err %d\n",
1873 aq_ret, pf->hw.aq.asq_last_status);
1874 }
1875
1876 clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1877 return 0;
1878 }
1879
1880 /**
1881 * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1882 * @pf: board private structure
1883 **/
1884 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1885 {
1886 int v;
1887
1888 if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1889 return;
1890 pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1891
1892 for (v = 0; v < pf->num_alloc_vsi; v++) {
1893 if (pf->vsi[v] &&
1894 (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1895 i40e_sync_vsi_filters(pf->vsi[v]);
1896 }
1897 }
1898
1899 /**
1900 * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1901 * @netdev: network interface device structure
1902 * @new_mtu: new value for maximum frame size
1903 *
1904 * Returns 0 on success, negative on failure
1905 **/
1906 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1907 {
1908 struct i40e_netdev_priv *np = netdev_priv(netdev);
1909 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1910 struct i40e_vsi *vsi = np->vsi;
1911
1912 /* MTU < 68 is an error and causes problems on some kernels */
1913 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1914 return -EINVAL;
1915
1916 netdev_info(netdev, "changing MTU from %d to %d\n",
1917 netdev->mtu, new_mtu);
1918 netdev->mtu = new_mtu;
1919 if (netif_running(netdev))
1920 i40e_vsi_reinit_locked(vsi);
1921
1922 return 0;
1923 }
1924
1925 /**
1926 * i40e_ioctl - Access the hwtstamp interface
1927 * @netdev: network interface device structure
1928 * @ifr: interface request data
1929 * @cmd: ioctl command
1930 **/
1931 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1932 {
1933 struct i40e_netdev_priv *np = netdev_priv(netdev);
1934 struct i40e_pf *pf = np->vsi->back;
1935
1936 switch (cmd) {
1937 case SIOCGHWTSTAMP:
1938 return i40e_ptp_get_ts_config(pf, ifr);
1939 case SIOCSHWTSTAMP:
1940 return i40e_ptp_set_ts_config(pf, ifr);
1941 default:
1942 return -EOPNOTSUPP;
1943 }
1944 }
1945
1946 /**
1947 * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1948 * @vsi: the vsi being adjusted
1949 **/
1950 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1951 {
1952 struct i40e_vsi_context ctxt;
1953 i40e_status ret;
1954
1955 if ((vsi->info.valid_sections &
1956 cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1957 ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1958 return; /* already enabled */
1959
1960 vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1961 vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1962 I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1963
1964 ctxt.seid = vsi->seid;
1965 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1966 ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1967 if (ret) {
1968 dev_info(&vsi->back->pdev->dev,
1969 "%s: update vsi failed, aq_err=%d\n",
1970 __func__, vsi->back->hw.aq.asq_last_status);
1971 }
1972 }
1973
1974 /**
1975 * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1976 * @vsi: the vsi being adjusted
1977 **/
1978 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1979 {
1980 struct i40e_vsi_context ctxt;
1981 i40e_status ret;
1982
1983 if ((vsi->info.valid_sections &
1984 cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1985 ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1986 I40E_AQ_VSI_PVLAN_EMOD_MASK))
1987 return; /* already disabled */
1988
1989 vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1990 vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1991 I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1992
1993 ctxt.seid = vsi->seid;
1994 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1995 ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1996 if (ret) {
1997 dev_info(&vsi->back->pdev->dev,
1998 "%s: update vsi failed, aq_err=%d\n",
1999 __func__, vsi->back->hw.aq.asq_last_status);
2000 }
2001 }
2002
2003 /**
2004 * i40e_vlan_rx_register - Setup or shutdown vlan offload
2005 * @netdev: network interface to be adjusted
2006 * @features: netdev features to test if VLAN offload is enabled or not
2007 **/
2008 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2009 {
2010 struct i40e_netdev_priv *np = netdev_priv(netdev);
2011 struct i40e_vsi *vsi = np->vsi;
2012
2013 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2014 i40e_vlan_stripping_enable(vsi);
2015 else
2016 i40e_vlan_stripping_disable(vsi);
2017 }
2018
2019 /**
2020 * i40e_vsi_add_vlan - Add vsi membership for given vlan
2021 * @vsi: the vsi being configured
2022 * @vid: vlan id to be added (0 = untagged only , -1 = any)
2023 **/
2024 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2025 {
2026 struct i40e_mac_filter *f, *add_f;
2027 bool is_netdev, is_vf;
2028
2029 is_vf = (vsi->type == I40E_VSI_SRIOV);
2030 is_netdev = !!(vsi->netdev);
2031
2032 if (is_netdev) {
2033 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2034 is_vf, is_netdev);
2035 if (!add_f) {
2036 dev_info(&vsi->back->pdev->dev,
2037 "Could not add vlan filter %d for %pM\n",
2038 vid, vsi->netdev->dev_addr);
2039 return -ENOMEM;
2040 }
2041 }
2042
2043 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2045 if (!add_f) {
2046 dev_info(&vsi->back->pdev->dev,
2047 "Could not add vlan filter %d for %pM\n",
2048 vid, f->macaddr);
2049 return -ENOMEM;
2050 }
2051 }
2052
2053 /* Now if we add a vlan tag, make sure to check if it is the first
2054 * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2055 * with 0, so we now accept untagged and specified tagged traffic
2056 * (and not any taged and untagged)
2057 */
2058 if (vid > 0) {
2059 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2060 I40E_VLAN_ANY,
2061 is_vf, is_netdev)) {
2062 i40e_del_filter(vsi, vsi->netdev->dev_addr,
2063 I40E_VLAN_ANY, is_vf, is_netdev);
2064 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2065 is_vf, is_netdev);
2066 if (!add_f) {
2067 dev_info(&vsi->back->pdev->dev,
2068 "Could not add filter 0 for %pM\n",
2069 vsi->netdev->dev_addr);
2070 return -ENOMEM;
2071 }
2072 }
2073 }
2074
2075 /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2076 if (vid > 0 && !vsi->info.pvid) {
2077 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2078 if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2079 is_vf, is_netdev)) {
2080 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2081 is_vf, is_netdev);
2082 add_f = i40e_add_filter(vsi, f->macaddr,
2083 0, is_vf, is_netdev);
2084 if (!add_f) {
2085 dev_info(&vsi->back->pdev->dev,
2086 "Could not add filter 0 for %pM\n",
2087 f->macaddr);
2088 return -ENOMEM;
2089 }
2090 }
2091 }
2092 }
2093
2094 if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2095 test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2096 return 0;
2097
2098 return i40e_sync_vsi_filters(vsi);
2099 }
2100
2101 /**
2102 * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2103 * @vsi: the vsi being configured
2104 * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2105 *
2106 * Return: 0 on success or negative otherwise
2107 **/
2108 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2109 {
2110 struct net_device *netdev = vsi->netdev;
2111 struct i40e_mac_filter *f, *add_f;
2112 bool is_vf, is_netdev;
2113 int filter_count = 0;
2114
2115 is_vf = (vsi->type == I40E_VSI_SRIOV);
2116 is_netdev = !!(netdev);
2117
2118 if (is_netdev)
2119 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2120
2121 list_for_each_entry(f, &vsi->mac_filter_list, list)
2122 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2123
2124 /* go through all the filters for this VSI and if there is only
2125 * vid == 0 it means there are no other filters, so vid 0 must
2126 * be replaced with -1. This signifies that we should from now
2127 * on accept any traffic (with any tag present, or untagged)
2128 */
2129 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2130 if (is_netdev) {
2131 if (f->vlan &&
2132 ether_addr_equal(netdev->dev_addr, f->macaddr))
2133 filter_count++;
2134 }
2135
2136 if (f->vlan)
2137 filter_count++;
2138 }
2139
2140 if (!filter_count && is_netdev) {
2141 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2142 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2143 is_vf, is_netdev);
2144 if (!f) {
2145 dev_info(&vsi->back->pdev->dev,
2146 "Could not add filter %d for %pM\n",
2147 I40E_VLAN_ANY, netdev->dev_addr);
2148 return -ENOMEM;
2149 }
2150 }
2151
2152 if (!filter_count) {
2153 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2154 i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2155 add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2156 is_vf, is_netdev);
2157 if (!add_f) {
2158 dev_info(&vsi->back->pdev->dev,
2159 "Could not add filter %d for %pM\n",
2160 I40E_VLAN_ANY, f->macaddr);
2161 return -ENOMEM;
2162 }
2163 }
2164 }
2165
2166 if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2167 test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2168 return 0;
2169
2170 return i40e_sync_vsi_filters(vsi);
2171 }
2172
2173 /**
2174 * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2175 * @netdev: network interface to be adjusted
2176 * @vid: vlan id to be added
2177 *
2178 * net_device_ops implementation for adding vlan ids
2179 **/
2180 #ifdef I40E_FCOE
2181 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2182 __always_unused __be16 proto, u16 vid)
2183 #else
2184 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2185 __always_unused __be16 proto, u16 vid)
2186 #endif
2187 {
2188 struct i40e_netdev_priv *np = netdev_priv(netdev);
2189 struct i40e_vsi *vsi = np->vsi;
2190 int ret = 0;
2191
2192 if (vid > 4095)
2193 return -EINVAL;
2194
2195 netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2196
2197 /* If the network stack called us with vid = 0 then
2198 * it is asking to receive priority tagged packets with
2199 * vlan id 0. Our HW receives them by default when configured
2200 * to receive untagged packets so there is no need to add an
2201 * extra filter for vlan 0 tagged packets.
2202 */
2203 if (vid)
2204 ret = i40e_vsi_add_vlan(vsi, vid);
2205
2206 if (!ret && (vid < VLAN_N_VID))
2207 set_bit(vid, vsi->active_vlans);
2208
2209 return ret;
2210 }
2211
2212 /**
2213 * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2214 * @netdev: network interface to be adjusted
2215 * @vid: vlan id to be removed
2216 *
2217 * net_device_ops implementation for removing vlan ids
2218 **/
2219 #ifdef I40E_FCOE
2220 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2221 __always_unused __be16 proto, u16 vid)
2222 #else
2223 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2224 __always_unused __be16 proto, u16 vid)
2225 #endif
2226 {
2227 struct i40e_netdev_priv *np = netdev_priv(netdev);
2228 struct i40e_vsi *vsi = np->vsi;
2229
2230 netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2231
2232 /* return code is ignored as there is nothing a user
2233 * can do about failure to remove and a log message was
2234 * already printed from the other function
2235 */
2236 i40e_vsi_kill_vlan(vsi, vid);
2237
2238 clear_bit(vid, vsi->active_vlans);
2239
2240 return 0;
2241 }
2242
2243 /**
2244 * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2245 * @vsi: the vsi being brought back up
2246 **/
2247 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2248 {
2249 u16 vid;
2250
2251 if (!vsi->netdev)
2252 return;
2253
2254 i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2255
2256 for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2257 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2258 vid);
2259 }
2260
2261 /**
2262 * i40e_vsi_add_pvid - Add pvid for the VSI
2263 * @vsi: the vsi being adjusted
2264 * @vid: the vlan id to set as a PVID
2265 **/
2266 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2267 {
2268 struct i40e_vsi_context ctxt;
2269 i40e_status aq_ret;
2270
2271 vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272 vsi->info.pvid = cpu_to_le16(vid);
2273 vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2274 I40E_AQ_VSI_PVLAN_INSERT_PVID |
2275 I40E_AQ_VSI_PVLAN_EMOD_STR;
2276
2277 ctxt.seid = vsi->seid;
2278 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2279 aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2280 if (aq_ret) {
2281 dev_info(&vsi->back->pdev->dev,
2282 "%s: update vsi failed, aq_err=%d\n",
2283 __func__, vsi->back->hw.aq.asq_last_status);
2284 return -ENOENT;
2285 }
2286
2287 return 0;
2288 }
2289
2290 /**
2291 * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2292 * @vsi: the vsi being adjusted
2293 *
2294 * Just use the vlan_rx_register() service to put it back to normal
2295 **/
2296 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2297 {
2298 i40e_vlan_stripping_disable(vsi);
2299
2300 vsi->info.pvid = 0;
2301 }
2302
2303 /**
2304 * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2305 * @vsi: ptr to the VSI
2306 *
2307 * If this function returns with an error, then it's possible one or
2308 * more of the rings is populated (while the rest are not). It is the
2309 * callers duty to clean those orphaned rings.
2310 *
2311 * Return 0 on success, negative on failure
2312 **/
2313 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2314 {
2315 int i, err = 0;
2316
2317 for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2318 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2319
2320 return err;
2321 }
2322
2323 /**
2324 * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2325 * @vsi: ptr to the VSI
2326 *
2327 * Free VSI's transmit software resources
2328 **/
2329 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2330 {
2331 int i;
2332
2333 if (!vsi->tx_rings)
2334 return;
2335
2336 for (i = 0; i < vsi->num_queue_pairs; i++)
2337 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338 i40e_free_tx_resources(vsi->tx_rings[i]);
2339 }
2340
2341 /**
2342 * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2343 * @vsi: ptr to the VSI
2344 *
2345 * If this function returns with an error, then it's possible one or
2346 * more of the rings is populated (while the rest are not). It is the
2347 * callers duty to clean those orphaned rings.
2348 *
2349 * Return 0 on success, negative on failure
2350 **/
2351 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2352 {
2353 int i, err = 0;
2354
2355 for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2356 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2357 #ifdef I40E_FCOE
2358 i40e_fcoe_setup_ddp_resources(vsi);
2359 #endif
2360 return err;
2361 }
2362
2363 /**
2364 * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2365 * @vsi: ptr to the VSI
2366 *
2367 * Free all receive software resources
2368 **/
2369 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2370 {
2371 int i;
2372
2373 if (!vsi->rx_rings)
2374 return;
2375
2376 for (i = 0; i < vsi->num_queue_pairs; i++)
2377 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378 i40e_free_rx_resources(vsi->rx_rings[i]);
2379 #ifdef I40E_FCOE
2380 i40e_fcoe_free_ddp_resources(vsi);
2381 #endif
2382 }
2383
2384 /**
2385 * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2386 * @ring: The Tx ring to configure
2387 *
2388 * This enables/disables XPS for a given Tx descriptor ring
2389 * based on the TCs enabled for the VSI that ring belongs to.
2390 **/
2391 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2392 {
2393 struct i40e_vsi *vsi = ring->vsi;
2394 cpumask_var_t mask;
2395
2396 if (ring->q_vector && ring->netdev) {
2397 /* Single TC mode enable XPS */
2398 if (vsi->tc_config.numtc <= 1 &&
2399 !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) {
2400 netif_set_xps_queue(ring->netdev,
2401 &ring->q_vector->affinity_mask,
2402 ring->queue_index);
2403 } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2404 /* Disable XPS to allow selection based on TC */
2405 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2406 netif_set_xps_queue(ring->netdev, mask,
2407 ring->queue_index);
2408 free_cpumask_var(mask);
2409 }
2410 }
2411 }
2412
2413 /**
2414 * i40e_configure_tx_ring - Configure a transmit ring context and rest
2415 * @ring: The Tx ring to configure
2416 *
2417 * Configure the Tx descriptor ring in the HMC context.
2418 **/
2419 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2420 {
2421 struct i40e_vsi *vsi = ring->vsi;
2422 u16 pf_q = vsi->base_queue + ring->queue_index;
2423 struct i40e_hw *hw = &vsi->back->hw;
2424 struct i40e_hmc_obj_txq tx_ctx;
2425 i40e_status err = 0;
2426 u32 qtx_ctl = 0;
2427
2428 /* some ATR related tx ring init */
2429 if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2430 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2431 ring->atr_count = 0;
2432 } else {
2433 ring->atr_sample_rate = 0;
2434 }
2435
2436 /* configure XPS */
2437 i40e_config_xps_tx_ring(ring);
2438
2439 /* clear the context structure first */
2440 memset(&tx_ctx, 0, sizeof(tx_ctx));
2441
2442 tx_ctx.new_context = 1;
2443 tx_ctx.base = (ring->dma / 128);
2444 tx_ctx.qlen = ring->count;
2445 tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2446 I40E_FLAG_FD_ATR_ENABLED));
2447 #ifdef I40E_FCOE
2448 tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2449 #endif
2450 tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2451 /* FDIR VSI tx ring can still use RS bit and writebacks */
2452 if (vsi->type != I40E_VSI_FDIR)
2453 tx_ctx.head_wb_ena = 1;
2454 tx_ctx.head_wb_addr = ring->dma +
2455 (ring->count * sizeof(struct i40e_tx_desc));
2456
2457 /* As part of VSI creation/update, FW allocates certain
2458 * Tx arbitration queue sets for each TC enabled for
2459 * the VSI. The FW returns the handles to these queue
2460 * sets as part of the response buffer to Add VSI,
2461 * Update VSI, etc. AQ commands. It is expected that
2462 * these queue set handles be associated with the Tx
2463 * queues by the driver as part of the TX queue context
2464 * initialization. This has to be done regardless of
2465 * DCB as by default everything is mapped to TC0.
2466 */
2467 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2468 tx_ctx.rdylist_act = 0;
2469
2470 /* clear the context in the HMC */
2471 err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2472 if (err) {
2473 dev_info(&vsi->back->pdev->dev,
2474 "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2475 ring->queue_index, pf_q, err);
2476 return -ENOMEM;
2477 }
2478
2479 /* set the context in the HMC */
2480 err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2481 if (err) {
2482 dev_info(&vsi->back->pdev->dev,
2483 "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2484 ring->queue_index, pf_q, err);
2485 return -ENOMEM;
2486 }
2487
2488 /* Now associate this queue with this PCI function */
2489 if (vsi->type == I40E_VSI_VMDQ2) {
2490 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2491 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2492 I40E_QTX_CTL_VFVM_INDX_MASK;
2493 } else {
2494 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2495 }
2496
2497 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2498 I40E_QTX_CTL_PF_INDX_MASK);
2499 wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2500 i40e_flush(hw);
2501
2502 clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2503
2504 /* cache tail off for easier writes later */
2505 ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2506
2507 return 0;
2508 }
2509
2510 /**
2511 * i40e_configure_rx_ring - Configure a receive ring context
2512 * @ring: The Rx ring to configure
2513 *
2514 * Configure the Rx descriptor ring in the HMC context.
2515 **/
2516 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2517 {
2518 struct i40e_vsi *vsi = ring->vsi;
2519 u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2520 u16 pf_q = vsi->base_queue + ring->queue_index;
2521 struct i40e_hw *hw = &vsi->back->hw;
2522 struct i40e_hmc_obj_rxq rx_ctx;
2523 i40e_status err = 0;
2524
2525 ring->state = 0;
2526
2527 /* clear the context structure first */
2528 memset(&rx_ctx, 0, sizeof(rx_ctx));
2529
2530 ring->rx_buf_len = vsi->rx_buf_len;
2531 ring->rx_hdr_len = vsi->rx_hdr_len;
2532
2533 rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2534 rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2535
2536 rx_ctx.base = (ring->dma / 128);
2537 rx_ctx.qlen = ring->count;
2538
2539 if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2540 set_ring_16byte_desc_enabled(ring);
2541 rx_ctx.dsize = 0;
2542 } else {
2543 rx_ctx.dsize = 1;
2544 }
2545
2546 rx_ctx.dtype = vsi->dtype;
2547 if (vsi->dtype) {
2548 set_ring_ps_enabled(ring);
2549 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
2550 I40E_RX_SPLIT_IP |
2551 I40E_RX_SPLIT_TCP_UDP |
2552 I40E_RX_SPLIT_SCTP;
2553 } else {
2554 rx_ctx.hsplit_0 = 0;
2555 }
2556
2557 rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2558 (chain_len * ring->rx_buf_len));
2559 if (hw->revision_id == 0)
2560 rx_ctx.lrxqthresh = 0;
2561 else
2562 rx_ctx.lrxqthresh = 2;
2563 rx_ctx.crcstrip = 1;
2564 rx_ctx.l2tsel = 1;
2565 rx_ctx.showiv = 1;
2566 #ifdef I40E_FCOE
2567 rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2568 #endif
2569 /* set the prefena field to 1 because the manual says to */
2570 rx_ctx.prefena = 1;
2571
2572 /* clear the context in the HMC */
2573 err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2574 if (err) {
2575 dev_info(&vsi->back->pdev->dev,
2576 "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2577 ring->queue_index, pf_q, err);
2578 return -ENOMEM;
2579 }
2580
2581 /* set the context in the HMC */
2582 err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2583 if (err) {
2584 dev_info(&vsi->back->pdev->dev,
2585 "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2586 ring->queue_index, pf_q, err);
2587 return -ENOMEM;
2588 }
2589
2590 /* cache tail for quicker writes, and clear the reg before use */
2591 ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2592 writel(0, ring->tail);
2593
2594 i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2595
2596 return 0;
2597 }
2598
2599 /**
2600 * i40e_vsi_configure_tx - Configure the VSI for Tx
2601 * @vsi: VSI structure describing this set of rings and resources
2602 *
2603 * Configure the Tx VSI for operation.
2604 **/
2605 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2606 {
2607 int err = 0;
2608 u16 i;
2609
2610 for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2611 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2612
2613 return err;
2614 }
2615
2616 /**
2617 * i40e_vsi_configure_rx - Configure the VSI for Rx
2618 * @vsi: the VSI being configured
2619 *
2620 * Configure the Rx VSI for operation.
2621 **/
2622 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2623 {
2624 int err = 0;
2625 u16 i;
2626
2627 if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2628 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2629 + ETH_FCS_LEN + VLAN_HLEN;
2630 else
2631 vsi->max_frame = I40E_RXBUFFER_2048;
2632
2633 /* figure out correct receive buffer length */
2634 switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2635 I40E_FLAG_RX_PS_ENABLED)) {
2636 case I40E_FLAG_RX_1BUF_ENABLED:
2637 vsi->rx_hdr_len = 0;
2638 vsi->rx_buf_len = vsi->max_frame;
2639 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2640 break;
2641 case I40E_FLAG_RX_PS_ENABLED:
2642 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2643 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2644 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2645 break;
2646 default:
2647 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2648 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2649 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2650 break;
2651 }
2652
2653 #ifdef I40E_FCOE
2654 /* setup rx buffer for FCoE */
2655 if ((vsi->type == I40E_VSI_FCOE) &&
2656 (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2657 vsi->rx_hdr_len = 0;
2658 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2659 vsi->max_frame = I40E_RXBUFFER_3072;
2660 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2661 }
2662
2663 #endif /* I40E_FCOE */
2664 /* round up for the chip's needs */
2665 vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2666 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2667 vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2668 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2669
2670 /* set up individual rings */
2671 for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2672 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2673
2674 return err;
2675 }
2676
2677 /**
2678 * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2679 * @vsi: ptr to the VSI
2680 **/
2681 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2682 {
2683 struct i40e_ring *tx_ring, *rx_ring;
2684 u16 qoffset, qcount;
2685 int i, n;
2686
2687 if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2688 return;
2689
2690 for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2691 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2692 continue;
2693
2694 qoffset = vsi->tc_config.tc_info[n].qoffset;
2695 qcount = vsi->tc_config.tc_info[n].qcount;
2696 for (i = qoffset; i < (qoffset + qcount); i++) {
2697 rx_ring = vsi->rx_rings[i];
2698 tx_ring = vsi->tx_rings[i];
2699 rx_ring->dcb_tc = n;
2700 tx_ring->dcb_tc = n;
2701 }
2702 }
2703 }
2704
2705 /**
2706 * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2707 * @vsi: ptr to the VSI
2708 **/
2709 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2710 {
2711 if (vsi->netdev)
2712 i40e_set_rx_mode(vsi->netdev);
2713 }
2714
2715 /**
2716 * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2717 * @vsi: Pointer to the targeted VSI
2718 *
2719 * This function replays the hlist on the hw where all the SB Flow Director
2720 * filters were saved.
2721 **/
2722 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2723 {
2724 struct i40e_fdir_filter *filter;
2725 struct i40e_pf *pf = vsi->back;
2726 struct hlist_node *node;
2727
2728 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2729 return;
2730
2731 hlist_for_each_entry_safe(filter, node,
2732 &pf->fdir_filter_list, fdir_node) {
2733 i40e_add_del_fdir(vsi, filter, true);
2734 }
2735 }
2736
2737 /**
2738 * i40e_vsi_configure - Set up the VSI for action
2739 * @vsi: the VSI being configured
2740 **/
2741 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2742 {
2743 int err;
2744
2745 i40e_set_vsi_rx_mode(vsi);
2746 i40e_restore_vlan(vsi);
2747 i40e_vsi_config_dcb_rings(vsi);
2748 err = i40e_vsi_configure_tx(vsi);
2749 if (!err)
2750 err = i40e_vsi_configure_rx(vsi);
2751
2752 return err;
2753 }
2754
2755 /**
2756 * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2757 * @vsi: the VSI being configured
2758 **/
2759 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2760 {
2761 struct i40e_pf *pf = vsi->back;
2762 struct i40e_q_vector *q_vector;
2763 struct i40e_hw *hw = &pf->hw;
2764 u16 vector;
2765 int i, q;
2766 u32 val;
2767 u32 qp;
2768
2769 /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2770 * and PFINT_LNKLSTn registers, e.g.:
2771 * PFINT_ITRn[0..n-1] gets msix-1..msix-n (qpair interrupts)
2772 */
2773 qp = vsi->base_queue;
2774 vector = vsi->base_vector;
2775 for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2776 q_vector = vsi->q_vectors[i];
2777 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2778 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2779 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2780 q_vector->rx.itr);
2781 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2782 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2783 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2784 q_vector->tx.itr);
2785
2786 /* Linked list for the queuepairs assigned to this vector */
2787 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2788 for (q = 0; q < q_vector->num_ringpairs; q++) {
2789 val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2790 (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2791 (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2792 (qp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2793 (I40E_QUEUE_TYPE_TX
2794 << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2795
2796 wr32(hw, I40E_QINT_RQCTL(qp), val);
2797
2798 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2799 (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2800 (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2801 ((qp+1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2802 (I40E_QUEUE_TYPE_RX
2803 << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2804
2805 /* Terminate the linked list */
2806 if (q == (q_vector->num_ringpairs - 1))
2807 val |= (I40E_QUEUE_END_OF_LIST
2808 << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2809
2810 wr32(hw, I40E_QINT_TQCTL(qp), val);
2811 qp++;
2812 }
2813 }
2814
2815 i40e_flush(hw);
2816 }
2817
2818 /**
2819 * i40e_enable_misc_int_causes - enable the non-queue interrupts
2820 * @hw: ptr to the hardware info
2821 **/
2822 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2823 {
2824 struct i40e_hw *hw = &pf->hw;
2825 u32 val;
2826
2827 /* clear things first */
2828 wr32(hw, I40E_PFINT_ICR0_ENA, 0); /* disable all */
2829 rd32(hw, I40E_PFINT_ICR0); /* read to clear */
2830
2831 val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK |
2832 I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK |
2833 I40E_PFINT_ICR0_ENA_GRST_MASK |
2834 I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2835 I40E_PFINT_ICR0_ENA_GPIO_MASK |
2836 I40E_PFINT_ICR0_ENA_HMC_ERR_MASK |
2837 I40E_PFINT_ICR0_ENA_VFLR_MASK |
2838 I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2839
2840 if (pf->flags & I40E_FLAG_PTP)
2841 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2842
2843 wr32(hw, I40E_PFINT_ICR0_ENA, val);
2844
2845 /* SW_ITR_IDX = 0, but don't change INTENA */
2846 wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2847 I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2848
2849 /* OTHER_ITR_IDX = 0 */
2850 wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2851 }
2852
2853 /**
2854 * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2855 * @vsi: the VSI being configured
2856 **/
2857 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2858 {
2859 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2860 struct i40e_pf *pf = vsi->back;
2861 struct i40e_hw *hw = &pf->hw;
2862 u32 val;
2863
2864 /* set the ITR configuration */
2865 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2866 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2867 wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2868 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2869 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2870 wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2871
2872 i40e_enable_misc_int_causes(pf);
2873
2874 /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2875 wr32(hw, I40E_PFINT_LNKLST0, 0);
2876
2877 /* Associate the queue pair to the vector and enable the queue int */
2878 val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2879 (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2880 (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2881
2882 wr32(hw, I40E_QINT_RQCTL(0), val);
2883
2884 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2885 (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2886 (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2887
2888 wr32(hw, I40E_QINT_TQCTL(0), val);
2889 i40e_flush(hw);
2890 }
2891
2892 /**
2893 * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2894 * @pf: board private structure
2895 **/
2896 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2897 {
2898 struct i40e_hw *hw = &pf->hw;
2899
2900 wr32(hw, I40E_PFINT_DYN_CTL0,
2901 I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2902 i40e_flush(hw);
2903 }
2904
2905 /**
2906 * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2907 * @pf: board private structure
2908 **/
2909 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2910 {
2911 struct i40e_hw *hw = &pf->hw;
2912 u32 val;
2913
2914 val = I40E_PFINT_DYN_CTL0_INTENA_MASK |
2915 I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2916 (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2917
2918 wr32(hw, I40E_PFINT_DYN_CTL0, val);
2919 i40e_flush(hw);
2920 }
2921
2922 /**
2923 * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2924 * @vsi: pointer to a vsi
2925 * @vector: enable a particular Hw Interrupt vector
2926 **/
2927 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2928 {
2929 struct i40e_pf *pf = vsi->back;
2930 struct i40e_hw *hw = &pf->hw;
2931 u32 val;
2932
2933 val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2934 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2935 (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2936 wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2937 /* skip the flush */
2938 }
2939
2940 /**
2941 * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2942 * @vsi: pointer to a vsi
2943 * @vector: disable a particular Hw Interrupt vector
2944 **/
2945 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2946 {
2947 struct i40e_pf *pf = vsi->back;
2948 struct i40e_hw *hw = &pf->hw;
2949 u32 val;
2950
2951 val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2952 wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2953 i40e_flush(hw);
2954 }
2955
2956 /**
2957 * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2958 * @irq: interrupt number
2959 * @data: pointer to a q_vector
2960 **/
2961 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2962 {
2963 struct i40e_q_vector *q_vector = data;
2964
2965 if (!q_vector->tx.ring && !q_vector->rx.ring)
2966 return IRQ_HANDLED;
2967
2968 napi_schedule(&q_vector->napi);
2969
2970 return IRQ_HANDLED;
2971 }
2972
2973 /**
2974 * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2975 * @vsi: the VSI being configured
2976 * @basename: name for the vector
2977 *
2978 * Allocates MSI-X vectors and requests interrupts from the kernel.
2979 **/
2980 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2981 {
2982 int q_vectors = vsi->num_q_vectors;
2983 struct i40e_pf *pf = vsi->back;
2984 int base = vsi->base_vector;
2985 int rx_int_idx = 0;
2986 int tx_int_idx = 0;
2987 int vector, err;
2988
2989 for (vector = 0; vector < q_vectors; vector++) {
2990 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2991
2992 if (q_vector->tx.ring && q_vector->rx.ring) {
2993 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2994 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2995 tx_int_idx++;
2996 } else if (q_vector->rx.ring) {
2997 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2998 "%s-%s-%d", basename, "rx", rx_int_idx++);
2999 } else if (q_vector->tx.ring) {
3000 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3001 "%s-%s-%d", basename, "tx", tx_int_idx++);
3002 } else {
3003 /* skip this unused q_vector */
3004 continue;
3005 }
3006 err = request_irq(pf->msix_entries[base + vector].vector,
3007 vsi->irq_handler,
3008 0,
3009 q_vector->name,
3010 q_vector);
3011 if (err) {
3012 dev_info(&pf->pdev->dev,
3013 "%s: request_irq failed, error: %d\n",
3014 __func__, err);
3015 goto free_queue_irqs;
3016 }
3017 /* assign the mask for this irq */
3018 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3019 &q_vector->affinity_mask);
3020 }
3021
3022 vsi->irqs_ready = true;
3023 return 0;
3024
3025 free_queue_irqs:
3026 while (vector) {
3027 vector--;
3028 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3029 NULL);
3030 free_irq(pf->msix_entries[base + vector].vector,
3031 &(vsi->q_vectors[vector]));
3032 }
3033 return err;
3034 }
3035
3036 /**
3037 * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3038 * @vsi: the VSI being un-configured
3039 **/
3040 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3041 {
3042 struct i40e_pf *pf = vsi->back;
3043 struct i40e_hw *hw = &pf->hw;
3044 int base = vsi->base_vector;
3045 int i;
3046
3047 for (i = 0; i < vsi->num_queue_pairs; i++) {
3048 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3049 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3050 }
3051
3052 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3053 for (i = vsi->base_vector;
3054 i < (vsi->num_q_vectors + vsi->base_vector); i++)
3055 wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3056
3057 i40e_flush(hw);
3058 for (i = 0; i < vsi->num_q_vectors; i++)
3059 synchronize_irq(pf->msix_entries[i + base].vector);
3060 } else {
3061 /* Legacy and MSI mode - this stops all interrupt handling */
3062 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3063 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3064 i40e_flush(hw);
3065 synchronize_irq(pf->pdev->irq);
3066 }
3067 }
3068
3069 /**
3070 * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3071 * @vsi: the VSI being configured
3072 **/
3073 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3074 {
3075 struct i40e_pf *pf = vsi->back;
3076 int i;
3077
3078 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3079 for (i = vsi->base_vector;
3080 i < (vsi->num_q_vectors + vsi->base_vector); i++)
3081 i40e_irq_dynamic_enable(vsi, i);
3082 } else {
3083 i40e_irq_dynamic_enable_icr0(pf);
3084 }
3085
3086 i40e_flush(&pf->hw);
3087 return 0;
3088 }
3089
3090 /**
3091 * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3092 * @pf: board private structure
3093 **/
3094 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3095 {
3096 /* Disable ICR 0 */
3097 wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3098 i40e_flush(&pf->hw);
3099 }
3100
3101 /**
3102 * i40e_intr - MSI/Legacy and non-queue interrupt handler
3103 * @irq: interrupt number
3104 * @data: pointer to a q_vector
3105 *
3106 * This is the handler used for all MSI/Legacy interrupts, and deals
3107 * with both queue and non-queue interrupts. This is also used in
3108 * MSIX mode to handle the non-queue interrupts.
3109 **/
3110 static irqreturn_t i40e_intr(int irq, void *data)
3111 {
3112 struct i40e_pf *pf = (struct i40e_pf *)data;
3113 struct i40e_hw *hw = &pf->hw;
3114 irqreturn_t ret = IRQ_NONE;
3115 u32 icr0, icr0_remaining;
3116 u32 val, ena_mask;
3117
3118 icr0 = rd32(hw, I40E_PFINT_ICR0);
3119 ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3120
3121 /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3122 if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3123 goto enable_intr;
3124
3125 /* if interrupt but no bits showing, must be SWINT */
3126 if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3127 (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3128 pf->sw_int_count++;
3129
3130 /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3131 if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3132
3133 /* temporarily disable queue cause for NAPI processing */
3134 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3135 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3136 wr32(hw, I40E_QINT_RQCTL(0), qval);
3137
3138 qval = rd32(hw, I40E_QINT_TQCTL(0));
3139 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3140 wr32(hw, I40E_QINT_TQCTL(0), qval);
3141
3142 if (!test_bit(__I40E_DOWN, &pf->state))
3143 napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3144 }
3145
3146 if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3147 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3148 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3149 }
3150
3151 if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3152 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3153 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3154 }
3155
3156 if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3157 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3158 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3159 }
3160
3161 if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3162 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3163 set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3164 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3165 val = rd32(hw, I40E_GLGEN_RSTAT);
3166 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3167 >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3168 if (val == I40E_RESET_CORER) {
3169 pf->corer_count++;
3170 } else if (val == I40E_RESET_GLOBR) {
3171 pf->globr_count++;
3172 } else if (val == I40E_RESET_EMPR) {
3173 pf->empr_count++;
3174 set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3175 }
3176 }
3177
3178 if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3179 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3180 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3181 }
3182
3183 if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3184 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3185
3186 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3187 icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3188 i40e_ptp_tx_hwtstamp(pf);
3189 }
3190 }
3191
3192 /* If a critical error is pending we have no choice but to reset the
3193 * device.
3194 * Report and mask out any remaining unexpected interrupts.
3195 */
3196 icr0_remaining = icr0 & ena_mask;
3197 if (icr0_remaining) {
3198 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3199 icr0_remaining);
3200 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3201 (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3202 (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3203 dev_info(&pf->pdev->dev, "device will be reset\n");
3204 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3205 i40e_service_event_schedule(pf);
3206 }
3207 ena_mask &= ~icr0_remaining;
3208 }
3209 ret = IRQ_HANDLED;
3210
3211 enable_intr:
3212 /* re-enable interrupt causes */
3213 wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3214 if (!test_bit(__I40E_DOWN, &pf->state)) {
3215 i40e_service_event_schedule(pf);
3216 i40e_irq_dynamic_enable_icr0(pf);
3217 }
3218
3219 return ret;
3220 }
3221
3222 /**
3223 * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3224 * @tx_ring: tx ring to clean
3225 * @budget: how many cleans we're allowed
3226 *
3227 * Returns true if there's any budget left (e.g. the clean is finished)
3228 **/
3229 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3230 {
3231 struct i40e_vsi *vsi = tx_ring->vsi;
3232 u16 i = tx_ring->next_to_clean;
3233 struct i40e_tx_buffer *tx_buf;
3234 struct i40e_tx_desc *tx_desc;
3235
3236 tx_buf = &tx_ring->tx_bi[i];
3237 tx_desc = I40E_TX_DESC(tx_ring, i);
3238 i -= tx_ring->count;
3239
3240 do {
3241 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3242
3243 /* if next_to_watch is not set then there is no work pending */
3244 if (!eop_desc)
3245 break;
3246
3247 /* prevent any other reads prior to eop_desc */
3248 read_barrier_depends();
3249
3250 /* if the descriptor isn't done, no work yet to do */
3251 if (!(eop_desc->cmd_type_offset_bsz &
3252 cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3253 break;
3254
3255 /* clear next_to_watch to prevent false hangs */
3256 tx_buf->next_to_watch = NULL;
3257
3258 tx_desc->buffer_addr = 0;
3259 tx_desc->cmd_type_offset_bsz = 0;
3260 /* move past filter desc */
3261 tx_buf++;
3262 tx_desc++;
3263 i++;
3264 if (unlikely(!i)) {
3265 i -= tx_ring->count;
3266 tx_buf = tx_ring->tx_bi;
3267 tx_desc = I40E_TX_DESC(tx_ring, 0);
3268 }
3269 /* unmap skb header data */
3270 dma_unmap_single(tx_ring->dev,
3271 dma_unmap_addr(tx_buf, dma),
3272 dma_unmap_len(tx_buf, len),
3273 DMA_TO_DEVICE);
3274 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3275 kfree(tx_buf->raw_buf);
3276
3277 tx_buf->raw_buf = NULL;
3278 tx_buf->tx_flags = 0;
3279 tx_buf->next_to_watch = NULL;
3280 dma_unmap_len_set(tx_buf, len, 0);
3281 tx_desc->buffer_addr = 0;
3282 tx_desc->cmd_type_offset_bsz = 0;
3283
3284 /* move us past the eop_desc for start of next FD desc */
3285 tx_buf++;
3286 tx_desc++;
3287 i++;
3288 if (unlikely(!i)) {
3289 i -= tx_ring->count;
3290 tx_buf = tx_ring->tx_bi;
3291 tx_desc = I40E_TX_DESC(tx_ring, 0);
3292 }
3293
3294 /* update budget accounting */
3295 budget--;
3296 } while (likely(budget));
3297
3298 i += tx_ring->count;
3299 tx_ring->next_to_clean = i;
3300
3301 if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3302 i40e_irq_dynamic_enable(vsi,
3303 tx_ring->q_vector->v_idx + vsi->base_vector);
3304 }
3305 return budget > 0;
3306 }
3307
3308 /**
3309 * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3310 * @irq: interrupt number
3311 * @data: pointer to a q_vector
3312 **/
3313 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3314 {
3315 struct i40e_q_vector *q_vector = data;
3316 struct i40e_vsi *vsi;
3317
3318 if (!q_vector->tx.ring)
3319 return IRQ_HANDLED;
3320
3321 vsi = q_vector->tx.ring->vsi;
3322 i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3323
3324 return IRQ_HANDLED;
3325 }
3326
3327 /**
3328 * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3329 * @vsi: the VSI being configured
3330 * @v_idx: vector index
3331 * @qp_idx: queue pair index
3332 **/
3333 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3334 {
3335 struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3336 struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3337 struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3338
3339 tx_ring->q_vector = q_vector;
3340 tx_ring->next = q_vector->tx.ring;
3341 q_vector->tx.ring = tx_ring;
3342 q_vector->tx.count++;
3343
3344 rx_ring->q_vector = q_vector;
3345 rx_ring->next = q_vector->rx.ring;
3346 q_vector->rx.ring = rx_ring;
3347 q_vector->rx.count++;
3348 }
3349
3350 /**
3351 * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3352 * @vsi: the VSI being configured
3353 *
3354 * This function maps descriptor rings to the queue-specific vectors
3355 * we were allotted through the MSI-X enabling code. Ideally, we'd have
3356 * one vector per queue pair, but on a constrained vector budget, we
3357 * group the queue pairs as "efficiently" as possible.
3358 **/
3359 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3360 {
3361 int qp_remaining = vsi->num_queue_pairs;
3362 int q_vectors = vsi->num_q_vectors;
3363 int num_ringpairs;
3364 int v_start = 0;
3365 int qp_idx = 0;
3366
3367 /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3368 * group them so there are multiple queues per vector.
3369 * It is also important to go through all the vectors available to be
3370 * sure that if we don't use all the vectors, that the remaining vectors
3371 * are cleared. This is especially important when decreasing the
3372 * number of queues in use.
3373 */
3374 for (; v_start < q_vectors; v_start++) {
3375 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3376
3377 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3378
3379 q_vector->num_ringpairs = num_ringpairs;
3380
3381 q_vector->rx.count = 0;
3382 q_vector->tx.count = 0;
3383 q_vector->rx.ring = NULL;
3384 q_vector->tx.ring = NULL;
3385
3386 while (num_ringpairs--) {
3387 map_vector_to_qp(vsi, v_start, qp_idx);
3388 qp_idx++;
3389 qp_remaining--;
3390 }
3391 }
3392 }
3393
3394 /**
3395 * i40e_vsi_request_irq - Request IRQ from the OS
3396 * @vsi: the VSI being configured
3397 * @basename: name for the vector
3398 **/
3399 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3400 {
3401 struct i40e_pf *pf = vsi->back;
3402 int err;
3403
3404 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3405 err = i40e_vsi_request_irq_msix(vsi, basename);
3406 else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3407 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3408 pf->int_name, pf);
3409 else
3410 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3411 pf->int_name, pf);
3412
3413 if (err)
3414 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3415
3416 return err;
3417 }
3418
3419 #ifdef CONFIG_NET_POLL_CONTROLLER
3420 /**
3421 * i40e_netpoll - A Polling 'interrupt'handler
3422 * @netdev: network interface device structure
3423 *
3424 * This is used by netconsole to send skbs without having to re-enable
3425 * interrupts. It's not called while the normal interrupt routine is executing.
3426 **/
3427 #ifdef I40E_FCOE
3428 void i40e_netpoll(struct net_device *netdev)
3429 #else
3430 static void i40e_netpoll(struct net_device *netdev)
3431 #endif
3432 {
3433 struct i40e_netdev_priv *np = netdev_priv(netdev);
3434 struct i40e_vsi *vsi = np->vsi;
3435 struct i40e_pf *pf = vsi->back;
3436 int i;
3437
3438 /* if interface is down do nothing */
3439 if (test_bit(__I40E_DOWN, &vsi->state))
3440 return;
3441
3442 pf->flags |= I40E_FLAG_IN_NETPOLL;
3443 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3444 for (i = 0; i < vsi->num_q_vectors; i++)
3445 i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3446 } else {
3447 i40e_intr(pf->pdev->irq, netdev);
3448 }
3449 pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3450 }
3451 #endif
3452
3453 /**
3454 * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3455 * @pf: the PF being configured
3456 * @pf_q: the PF queue
3457 * @enable: enable or disable state of the queue
3458 *
3459 * This routine will wait for the given Tx queue of the PF to reach the
3460 * enabled or disabled state.
3461 * Returns -ETIMEDOUT in case of failing to reach the requested state after
3462 * multiple retries; else will return 0 in case of success.
3463 **/
3464 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3465 {
3466 int i;
3467 u32 tx_reg;
3468
3469 for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3470 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3471 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3472 break;
3473
3474 usleep_range(10, 20);
3475 }
3476 if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3477 return -ETIMEDOUT;
3478
3479 return 0;
3480 }
3481
3482 /**
3483 * i40e_vsi_control_tx - Start or stop a VSI's rings
3484 * @vsi: the VSI being configured
3485 * @enable: start or stop the rings
3486 **/
3487 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3488 {
3489 struct i40e_pf *pf = vsi->back;
3490 struct i40e_hw *hw = &pf->hw;
3491 int i, j, pf_q, ret = 0;
3492 u32 tx_reg;
3493
3494 pf_q = vsi->base_queue;
3495 for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3496
3497 /* warn the TX unit of coming changes */
3498 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3499 if (!enable)
3500 usleep_range(10, 20);
3501
3502 for (j = 0; j < 50; j++) {
3503 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3504 if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3505 ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3506 break;
3507 usleep_range(1000, 2000);
3508 }
3509 /* Skip if the queue is already in the requested state */
3510 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3511 continue;
3512
3513 /* turn on/off the queue */
3514 if (enable) {
3515 wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3516 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3517 } else {
3518 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3519 }
3520
3521 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3522 /* No waiting for the Tx queue to disable */
3523 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3524 continue;
3525
3526 /* wait for the change to finish */
3527 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3528 if (ret) {
3529 dev_info(&pf->pdev->dev,
3530 "%s: VSI seid %d Tx ring %d %sable timeout\n",
3531 __func__, vsi->seid, pf_q,
3532 (enable ? "en" : "dis"));
3533 break;
3534 }
3535 }
3536
3537 if (hw->revision_id == 0)
3538 mdelay(50);
3539 return ret;
3540 }
3541
3542 /**
3543 * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3544 * @pf: the PF being configured
3545 * @pf_q: the PF queue
3546 * @enable: enable or disable state of the queue
3547 *
3548 * This routine will wait for the given Rx queue of the PF to reach the
3549 * enabled or disabled state.
3550 * Returns -ETIMEDOUT in case of failing to reach the requested state after
3551 * multiple retries; else will return 0 in case of success.
3552 **/
3553 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3554 {
3555 int i;
3556 u32 rx_reg;
3557
3558 for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3559 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3560 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3561 break;
3562
3563 usleep_range(10, 20);
3564 }
3565 if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3566 return -ETIMEDOUT;
3567
3568 return 0;
3569 }
3570
3571 /**
3572 * i40e_vsi_control_rx - Start or stop a VSI's rings
3573 * @vsi: the VSI being configured
3574 * @enable: start or stop the rings
3575 **/
3576 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3577 {
3578 struct i40e_pf *pf = vsi->back;
3579 struct i40e_hw *hw = &pf->hw;
3580 int i, j, pf_q, ret = 0;
3581 u32 rx_reg;
3582
3583 pf_q = vsi->base_queue;
3584 for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3585 for (j = 0; j < 50; j++) {
3586 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3587 if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3588 ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3589 break;
3590 usleep_range(1000, 2000);
3591 }
3592
3593 /* Skip if the queue is already in the requested state */
3594 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3595 continue;
3596
3597 /* turn on/off the queue */
3598 if (enable)
3599 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3600 else
3601 rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3602 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3603
3604 /* wait for the change to finish */
3605 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3606 if (ret) {
3607 dev_info(&pf->pdev->dev,
3608 "%s: VSI seid %d Rx ring %d %sable timeout\n",
3609 __func__, vsi->seid, pf_q,
3610 (enable ? "en" : "dis"));
3611 break;
3612 }
3613 }
3614
3615 return ret;
3616 }
3617
3618 /**
3619 * i40e_vsi_control_rings - Start or stop a VSI's rings
3620 * @vsi: the VSI being configured
3621 * @enable: start or stop the rings
3622 **/
3623 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3624 {
3625 int ret = 0;
3626
3627 /* do rx first for enable and last for disable */
3628 if (request) {
3629 ret = i40e_vsi_control_rx(vsi, request);
3630 if (ret)
3631 return ret;
3632 ret = i40e_vsi_control_tx(vsi, request);
3633 } else {
3634 /* Ignore return value, we need to shutdown whatever we can */
3635 i40e_vsi_control_tx(vsi, request);
3636 i40e_vsi_control_rx(vsi, request);
3637 }
3638
3639 return ret;
3640 }
3641
3642 /**
3643 * i40e_vsi_free_irq - Free the irq association with the OS
3644 * @vsi: the VSI being configured
3645 **/
3646 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3647 {
3648 struct i40e_pf *pf = vsi->back;
3649 struct i40e_hw *hw = &pf->hw;
3650 int base = vsi->base_vector;
3651 u32 val, qp;
3652 int i;
3653
3654 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3655 if (!vsi->q_vectors)
3656 return;
3657
3658 if (!vsi->irqs_ready)
3659 return;
3660
3661 vsi->irqs_ready = false;
3662 for (i = 0; i < vsi->num_q_vectors; i++) {
3663 u16 vector = i + base;
3664
3665 /* free only the irqs that were actually requested */
3666 if (!vsi->q_vectors[i] ||
3667 !vsi->q_vectors[i]->num_ringpairs)
3668 continue;
3669
3670 /* clear the affinity_mask in the IRQ descriptor */
3671 irq_set_affinity_hint(pf->msix_entries[vector].vector,
3672 NULL);
3673 free_irq(pf->msix_entries[vector].vector,
3674 vsi->q_vectors[i]);
3675
3676 /* Tear down the interrupt queue link list
3677 *
3678 * We know that they come in pairs and always
3679 * the Rx first, then the Tx. To clear the
3680 * link list, stick the EOL value into the
3681 * next_q field of the registers.
3682 */
3683 val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3684 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3685 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3686 val |= I40E_QUEUE_END_OF_LIST
3687 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3688 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3689
3690 while (qp != I40E_QUEUE_END_OF_LIST) {
3691 u32 next;
3692
3693 val = rd32(hw, I40E_QINT_RQCTL(qp));
3694
3695 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
3696 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3697 I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3698 I40E_QINT_RQCTL_INTEVENT_MASK);
3699
3700 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3701 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3702
3703 wr32(hw, I40E_QINT_RQCTL(qp), val);
3704
3705 val = rd32(hw, I40E_QINT_TQCTL(qp));
3706
3707 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3708 >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3709
3710 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
3711 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3712 I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3713 I40E_QINT_TQCTL_INTEVENT_MASK);
3714
3715 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3716 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3717
3718 wr32(hw, I40E_QINT_TQCTL(qp), val);
3719 qp = next;
3720 }
3721 }
3722 } else {
3723 free_irq(pf->pdev->irq, pf);
3724
3725 val = rd32(hw, I40E_PFINT_LNKLST0);
3726 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3727 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3728 val |= I40E_QUEUE_END_OF_LIST
3729 << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3730 wr32(hw, I40E_PFINT_LNKLST0, val);
3731
3732 val = rd32(hw, I40E_QINT_RQCTL(qp));
3733 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
3734 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3735 I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3736 I40E_QINT_RQCTL_INTEVENT_MASK);
3737
3738 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3739 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3740
3741 wr32(hw, I40E_QINT_RQCTL(qp), val);
3742
3743 val = rd32(hw, I40E_QINT_TQCTL(qp));
3744
3745 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
3746 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3747 I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3748 I40E_QINT_TQCTL_INTEVENT_MASK);
3749
3750 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3751 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3752
3753 wr32(hw, I40E_QINT_TQCTL(qp), val);
3754 }
3755 }
3756
3757 /**
3758 * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3759 * @vsi: the VSI being configured
3760 * @v_idx: Index of vector to be freed
3761 *
3762 * This function frees the memory allocated to the q_vector. In addition if
3763 * NAPI is enabled it will delete any references to the NAPI struct prior
3764 * to freeing the q_vector.
3765 **/
3766 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3767 {
3768 struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3769 struct i40e_ring *ring;
3770
3771 if (!q_vector)
3772 return;
3773
3774 /* disassociate q_vector from rings */
3775 i40e_for_each_ring(ring, q_vector->tx)
3776 ring->q_vector = NULL;
3777
3778 i40e_for_each_ring(ring, q_vector->rx)
3779 ring->q_vector = NULL;
3780
3781 /* only VSI w/ an associated netdev is set up w/ NAPI */
3782 if (vsi->netdev)
3783 netif_napi_del(&q_vector->napi);
3784
3785 vsi->q_vectors[v_idx] = NULL;
3786
3787 kfree_rcu(q_vector, rcu);
3788 }
3789
3790 /**
3791 * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3792 * @vsi: the VSI being un-configured
3793 *
3794 * This frees the memory allocated to the q_vectors and
3795 * deletes references to the NAPI struct.
3796 **/
3797 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3798 {
3799 int v_idx;
3800
3801 for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3802 i40e_free_q_vector(vsi, v_idx);
3803 }
3804
3805 /**
3806 * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3807 * @pf: board private structure
3808 **/
3809 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3810 {
3811 /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3812 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3813 pci_disable_msix(pf->pdev);
3814 kfree(pf->msix_entries);
3815 pf->msix_entries = NULL;
3816 } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3817 pci_disable_msi(pf->pdev);
3818 }
3819 pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3820 }
3821
3822 /**
3823 * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3824 * @pf: board private structure
3825 *
3826 * We go through and clear interrupt specific resources and reset the structure
3827 * to pre-load conditions
3828 **/
3829 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3830 {
3831 int i;
3832
3833 i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3834 for (i = 0; i < pf->num_alloc_vsi; i++)
3835 if (pf->vsi[i])
3836 i40e_vsi_free_q_vectors(pf->vsi[i]);
3837 i40e_reset_interrupt_capability(pf);
3838 }
3839
3840 /**
3841 * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3842 * @vsi: the VSI being configured
3843 **/
3844 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3845 {
3846 int q_idx;
3847
3848 if (!vsi->netdev)
3849 return;
3850
3851 for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3852 napi_enable(&vsi->q_vectors[q_idx]->napi);
3853 }
3854
3855 /**
3856 * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3857 * @vsi: the VSI being configured
3858 **/
3859 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3860 {
3861 int q_idx;
3862
3863 if (!vsi->netdev)
3864 return;
3865
3866 for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3867 napi_disable(&vsi->q_vectors[q_idx]->napi);
3868 }
3869
3870 /**
3871 * i40e_vsi_close - Shut down a VSI
3872 * @vsi: the vsi to be quelled
3873 **/
3874 static void i40e_vsi_close(struct i40e_vsi *vsi)
3875 {
3876 if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3877 i40e_down(vsi);
3878 i40e_vsi_free_irq(vsi);
3879 i40e_vsi_free_tx_resources(vsi);
3880 i40e_vsi_free_rx_resources(vsi);
3881 }
3882
3883 /**
3884 * i40e_quiesce_vsi - Pause a given VSI
3885 * @vsi: the VSI being paused
3886 **/
3887 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3888 {
3889 if (test_bit(__I40E_DOWN, &vsi->state))
3890 return;
3891
3892 /* No need to disable FCoE VSI when Tx suspended */
3893 if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3894 vsi->type == I40E_VSI_FCOE) {
3895 dev_dbg(&vsi->back->pdev->dev,
3896 "%s: VSI seid %d skipping FCoE VSI disable\n",
3897 __func__, vsi->seid);
3898 return;
3899 }
3900
3901 set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3902 if (vsi->netdev && netif_running(vsi->netdev)) {
3903 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3904 } else {
3905 i40e_vsi_close(vsi);
3906 }
3907 }
3908
3909 /**
3910 * i40e_unquiesce_vsi - Resume a given VSI
3911 * @vsi: the VSI being resumed
3912 **/
3913 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3914 {
3915 if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3916 return;
3917
3918 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3919 if (vsi->netdev && netif_running(vsi->netdev))
3920 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3921 else
3922 i40e_vsi_open(vsi); /* this clears the DOWN bit */
3923 }
3924
3925 /**
3926 * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3927 * @pf: the PF
3928 **/
3929 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3930 {
3931 int v;
3932
3933 for (v = 0; v < pf->num_alloc_vsi; v++) {
3934 if (pf->vsi[v])
3935 i40e_quiesce_vsi(pf->vsi[v]);
3936 }
3937 }
3938
3939 /**
3940 * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3941 * @pf: the PF
3942 **/
3943 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3944 {
3945 int v;
3946
3947 for (v = 0; v < pf->num_alloc_vsi; v++) {
3948 if (pf->vsi[v])
3949 i40e_unquiesce_vsi(pf->vsi[v]);
3950 }
3951 }
3952
3953 #ifdef CONFIG_I40E_DCB
3954 /**
3955 * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3956 * @vsi: the VSI being configured
3957 *
3958 * This function waits for the given VSI's Tx queues to be disabled.
3959 **/
3960 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3961 {
3962 struct i40e_pf *pf = vsi->back;
3963 int i, pf_q, ret;
3964
3965 pf_q = vsi->base_queue;
3966 for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3967 /* Check and wait for the disable status of the queue */
3968 ret = i40e_pf_txq_wait(pf, pf_q, false);
3969 if (ret) {
3970 dev_info(&pf->pdev->dev,
3971 "%s: VSI seid %d Tx ring %d disable timeout\n",
3972 __func__, vsi->seid, pf_q);
3973 return ret;
3974 }
3975 }
3976
3977 return 0;
3978 }
3979
3980 /**
3981 * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
3982 * @pf: the PF
3983 *
3984 * This function waits for the Tx queues to be in disabled state for all the
3985 * VSIs that are managed by this PF.
3986 **/
3987 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
3988 {
3989 int v, ret = 0;
3990
3991 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3992 /* No need to wait for FCoE VSI queues */
3993 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
3994 ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
3995 if (ret)
3996 break;
3997 }
3998 }
3999
4000 return ret;
4001 }
4002
4003 #endif
4004 /**
4005 * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4006 * @pf: pointer to pf
4007 *
4008 * Get TC map for ISCSI PF type that will include iSCSI TC
4009 * and LAN TC.
4010 **/
4011 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4012 {
4013 struct i40e_dcb_app_priority_table app;
4014 struct i40e_hw *hw = &pf->hw;
4015 u8 enabled_tc = 1; /* TC0 is always enabled */
4016 u8 tc, i;
4017 /* Get the iSCSI APP TLV */
4018 struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4019
4020 for (i = 0; i < dcbcfg->numapps; i++) {
4021 app = dcbcfg->app[i];
4022 if (app.selector == I40E_APP_SEL_TCPIP &&
4023 app.protocolid == I40E_APP_PROTOID_ISCSI) {
4024 tc = dcbcfg->etscfg.prioritytable[app.priority];
4025 enabled_tc |= (1 << tc);
4026 break;
4027 }
4028 }
4029
4030 return enabled_tc;
4031 }
4032
4033 /**
4034 * i40e_dcb_get_num_tc - Get the number of TCs from DCBx config
4035 * @dcbcfg: the corresponding DCBx configuration structure
4036 *
4037 * Return the number of TCs from given DCBx configuration
4038 **/
4039 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4040 {
4041 u8 num_tc = 0;
4042 int i;
4043
4044 /* Scan the ETS Config Priority Table to find
4045 * traffic class enabled for a given priority
4046 * and use the traffic class index to get the
4047 * number of traffic classes enabled
4048 */
4049 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4050 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4051 num_tc = dcbcfg->etscfg.prioritytable[i];
4052 }
4053
4054 /* Traffic class index starts from zero so
4055 * increment to return the actual count
4056 */
4057 return num_tc + 1;
4058 }
4059
4060 /**
4061 * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4062 * @dcbcfg: the corresponding DCBx configuration structure
4063 *
4064 * Query the current DCB configuration and return the number of
4065 * traffic classes enabled from the given DCBX config
4066 **/
4067 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4068 {
4069 u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4070 u8 enabled_tc = 1;
4071 u8 i;
4072
4073 for (i = 0; i < num_tc; i++)
4074 enabled_tc |= 1 << i;
4075
4076 return enabled_tc;
4077 }
4078
4079 /**
4080 * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4081 * @pf: PF being queried
4082 *
4083 * Return number of traffic classes enabled for the given PF
4084 **/
4085 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4086 {
4087 struct i40e_hw *hw = &pf->hw;
4088 u8 i, enabled_tc;
4089 u8 num_tc = 0;
4090 struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4091
4092 /* If DCB is not enabled then always in single TC */
4093 if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4094 return 1;
4095
4096 /* SFP mode will be enabled for all TCs on port */
4097 if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4098 return i40e_dcb_get_num_tc(dcbcfg);
4099
4100 /* MFP mode return count of enabled TCs for this PF */
4101 if (pf->hw.func_caps.iscsi)
4102 enabled_tc = i40e_get_iscsi_tc_map(pf);
4103 else
4104 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4105
4106 /* At least have TC0 */
4107 enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4108 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4109 if (enabled_tc & (1 << i))
4110 num_tc++;
4111 }
4112 return num_tc;
4113 }
4114
4115 /**
4116 * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4117 * @pf: PF being queried
4118 *
4119 * Return a bitmap for first enabled traffic class for this PF.
4120 **/
4121 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4122 {
4123 u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4124 u8 i = 0;
4125
4126 if (!enabled_tc)
4127 return 0x1; /* TC0 */
4128
4129 /* Find the first enabled TC */
4130 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4131 if (enabled_tc & (1 << i))
4132 break;
4133 }
4134
4135 return 1 << i;
4136 }
4137
4138 /**
4139 * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4140 * @pf: PF being queried
4141 *
4142 * Return a bitmap for enabled traffic classes for this PF.
4143 **/
4144 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4145 {
4146 /* If DCB is not enabled for this PF then just return default TC */
4147 if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4148 return i40e_pf_get_default_tc(pf);
4149
4150 /* SFP mode we want PF to be enabled for all TCs */
4151 if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4152 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4153
4154 /* MPF enabled and iSCSI PF type */
4155 if (pf->hw.func_caps.iscsi)
4156 return i40e_get_iscsi_tc_map(pf);
4157 else
4158 return pf->hw.func_caps.enabled_tcmap;
4159 }
4160
4161 /**
4162 * i40e_vsi_get_bw_info - Query VSI BW Information
4163 * @vsi: the VSI being queried
4164 *
4165 * Returns 0 on success, negative value on failure
4166 **/
4167 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4168 {
4169 struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4170 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4171 struct i40e_pf *pf = vsi->back;
4172 struct i40e_hw *hw = &pf->hw;
4173 i40e_status aq_ret;
4174 u32 tc_bw_max;
4175 int i;
4176
4177 /* Get the VSI level BW configuration */
4178 aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4179 if (aq_ret) {
4180 dev_info(&pf->pdev->dev,
4181 "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4182 aq_ret, pf->hw.aq.asq_last_status);
4183 return -EINVAL;
4184 }
4185
4186 /* Get the VSI level BW configuration per TC */
4187 aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4188 NULL);
4189 if (aq_ret) {
4190 dev_info(&pf->pdev->dev,
4191 "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4192 aq_ret, pf->hw.aq.asq_last_status);
4193 return -EINVAL;
4194 }
4195
4196 if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4197 dev_info(&pf->pdev->dev,
4198 "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4199 bw_config.tc_valid_bits,
4200 bw_ets_config.tc_valid_bits);
4201 /* Still continuing */
4202 }
4203
4204 vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4205 vsi->bw_max_quanta = bw_config.max_bw;
4206 tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4207 (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4208 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4209 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4210 vsi->bw_ets_limit_credits[i] =
4211 le16_to_cpu(bw_ets_config.credits[i]);
4212 /* 3 bits out of 4 for each TC */
4213 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4214 }
4215
4216 return 0;
4217 }
4218
4219 /**
4220 * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4221 * @vsi: the VSI being configured
4222 * @enabled_tc: TC bitmap
4223 * @bw_credits: BW shared credits per TC
4224 *
4225 * Returns 0 on success, negative value on failure
4226 **/
4227 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4228 u8 *bw_share)
4229 {
4230 struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4231 i40e_status aq_ret;
4232 int i;
4233
4234 bw_data.tc_valid_bits = enabled_tc;
4235 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4236 bw_data.tc_bw_credits[i] = bw_share[i];
4237
4238 aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4239 NULL);
4240 if (aq_ret) {
4241 dev_info(&vsi->back->pdev->dev,
4242 "AQ command Config VSI BW allocation per TC failed = %d\n",
4243 vsi->back->hw.aq.asq_last_status);
4244 return -EINVAL;
4245 }
4246
4247 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4248 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4249
4250 return 0;
4251 }
4252
4253 /**
4254 * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4255 * @vsi: the VSI being configured
4256 * @enabled_tc: TC map to be enabled
4257 *
4258 **/
4259 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4260 {
4261 struct net_device *netdev = vsi->netdev;
4262 struct i40e_pf *pf = vsi->back;
4263 struct i40e_hw *hw = &pf->hw;
4264 u8 netdev_tc = 0;
4265 int i;
4266 struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4267
4268 if (!netdev)
4269 return;
4270
4271 if (!enabled_tc) {
4272 netdev_reset_tc(netdev);
4273 return;
4274 }
4275
4276 /* Set up actual enabled TCs on the VSI */
4277 if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4278 return;
4279
4280 /* set per TC queues for the VSI */
4281 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4282 /* Only set TC queues for enabled tcs
4283 *
4284 * e.g. For a VSI that has TC0 and TC3 enabled the
4285 * enabled_tc bitmap would be 0x00001001; the driver
4286 * will set the numtc for netdev as 2 that will be
4287 * referenced by the netdev layer as TC 0 and 1.
4288 */
4289 if (vsi->tc_config.enabled_tc & (1 << i))
4290 netdev_set_tc_queue(netdev,
4291 vsi->tc_config.tc_info[i].netdev_tc,
4292 vsi->tc_config.tc_info[i].qcount,
4293 vsi->tc_config.tc_info[i].qoffset);
4294 }
4295
4296 /* Assign UP2TC map for the VSI */
4297 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4298 /* Get the actual TC# for the UP */
4299 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4300 /* Get the mapped netdev TC# for the UP */
4301 netdev_tc = vsi->tc_config.tc_info[ets_tc].netdev_tc;
4302 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4303 }
4304 }
4305
4306 /**
4307 * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4308 * @vsi: the VSI being configured
4309 * @ctxt: the ctxt buffer returned from AQ VSI update param command
4310 **/
4311 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4312 struct i40e_vsi_context *ctxt)
4313 {
4314 /* copy just the sections touched not the entire info
4315 * since not all sections are valid as returned by
4316 * update vsi params
4317 */
4318 vsi->info.mapping_flags = ctxt->info.mapping_flags;
4319 memcpy(&vsi->info.queue_mapping,
4320 &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4321 memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4322 sizeof(vsi->info.tc_mapping));
4323 }
4324
4325 /**
4326 * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4327 * @vsi: VSI to be configured
4328 * @enabled_tc: TC bitmap
4329 *
4330 * This configures a particular VSI for TCs that are mapped to the
4331 * given TC bitmap. It uses default bandwidth share for TCs across
4332 * VSIs to configure TC for a particular VSI.
4333 *
4334 * NOTE:
4335 * It is expected that the VSI queues have been quisced before calling
4336 * this function.
4337 **/
4338 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4339 {
4340 u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4341 struct i40e_vsi_context ctxt;
4342 int ret = 0;
4343 int i;
4344
4345 /* Check if enabled_tc is same as existing or new TCs */
4346 if (vsi->tc_config.enabled_tc == enabled_tc)
4347 return ret;
4348
4349 /* Enable ETS TCs with equal BW Share for now across all VSIs */
4350 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4351 if (enabled_tc & (1 << i))
4352 bw_share[i] = 1;
4353 }
4354
4355 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4356 if (ret) {
4357 dev_info(&vsi->back->pdev->dev,
4358 "Failed configuring TC map %d for VSI %d\n",
4359 enabled_tc, vsi->seid);
4360 goto out;
4361 }
4362
4363 /* Update Queue Pairs Mapping for currently enabled UPs */
4364 ctxt.seid = vsi->seid;
4365 ctxt.pf_num = vsi->back->hw.pf_id;
4366 ctxt.vf_num = 0;
4367 ctxt.uplink_seid = vsi->uplink_seid;
4368 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4369 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4370
4371 /* Update the VSI after updating the VSI queue-mapping information */
4372 ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4373 if (ret) {
4374 dev_info(&vsi->back->pdev->dev,
4375 "update vsi failed, aq_err=%d\n",
4376 vsi->back->hw.aq.asq_last_status);
4377 goto out;
4378 }
4379 /* update the local VSI info with updated queue map */
4380 i40e_vsi_update_queue_map(vsi, &ctxt);
4381 vsi->info.valid_sections = 0;
4382
4383 /* Update current VSI BW information */
4384 ret = i40e_vsi_get_bw_info(vsi);
4385 if (ret) {
4386 dev_info(&vsi->back->pdev->dev,
4387 "Failed updating vsi bw info, aq_err=%d\n",
4388 vsi->back->hw.aq.asq_last_status);
4389 goto out;
4390 }
4391
4392 /* Update the netdev TC setup */
4393 i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4394 out:
4395 return ret;
4396 }
4397
4398 /**
4399 * i40e_veb_config_tc - Configure TCs for given VEB
4400 * @veb: given VEB
4401 * @enabled_tc: TC bitmap
4402 *
4403 * Configures given TC bitmap for VEB (switching) element
4404 **/
4405 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4406 {
4407 struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4408 struct i40e_pf *pf = veb->pf;
4409 int ret = 0;
4410 int i;
4411
4412 /* No TCs or already enabled TCs just return */
4413 if (!enabled_tc || veb->enabled_tc == enabled_tc)
4414 return ret;
4415
4416 bw_data.tc_valid_bits = enabled_tc;
4417 /* bw_data.absolute_credits is not set (relative) */
4418
4419 /* Enable ETS TCs with equal BW Share for now */
4420 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4421 if (enabled_tc & (1 << i))
4422 bw_data.tc_bw_share_credits[i] = 1;
4423 }
4424
4425 ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4426 &bw_data, NULL);
4427 if (ret) {
4428 dev_info(&pf->pdev->dev,
4429 "veb bw config failed, aq_err=%d\n",
4430 pf->hw.aq.asq_last_status);
4431 goto out;
4432 }
4433
4434 /* Update the BW information */
4435 ret = i40e_veb_get_bw_info(veb);
4436 if (ret) {
4437 dev_info(&pf->pdev->dev,
4438 "Failed getting veb bw config, aq_err=%d\n",
4439 pf->hw.aq.asq_last_status);
4440 }
4441
4442 out:
4443 return ret;
4444 }
4445
4446 #ifdef CONFIG_I40E_DCB
4447 /**
4448 * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4449 * @pf: PF struct
4450 *
4451 * Reconfigure VEB/VSIs on a given PF; it is assumed that
4452 * the caller would've quiesce all the VSIs before calling
4453 * this function
4454 **/
4455 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4456 {
4457 u8 tc_map = 0;
4458 int ret;
4459 u8 v;
4460
4461 /* Enable the TCs available on PF to all VEBs */
4462 tc_map = i40e_pf_get_tc_map(pf);
4463 for (v = 0; v < I40E_MAX_VEB; v++) {
4464 if (!pf->veb[v])
4465 continue;
4466 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4467 if (ret) {
4468 dev_info(&pf->pdev->dev,
4469 "Failed configuring TC for VEB seid=%d\n",
4470 pf->veb[v]->seid);
4471 /* Will try to configure as many components */
4472 }
4473 }
4474
4475 /* Update each VSI */
4476 for (v = 0; v < pf->num_alloc_vsi; v++) {
4477 if (!pf->vsi[v])
4478 continue;
4479
4480 /* - Enable all TCs for the LAN VSI
4481 #ifdef I40E_FCOE
4482 * - For FCoE VSI only enable the TC configured
4483 * as per the APP TLV
4484 #endif
4485 * - For all others keep them at TC0 for now
4486 */
4487 if (v == pf->lan_vsi)
4488 tc_map = i40e_pf_get_tc_map(pf);
4489 else
4490 tc_map = i40e_pf_get_default_tc(pf);
4491 #ifdef I40E_FCOE
4492 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4493 tc_map = i40e_get_fcoe_tc_map(pf);
4494 #endif /* #ifdef I40E_FCOE */
4495
4496 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4497 if (ret) {
4498 dev_info(&pf->pdev->dev,
4499 "Failed configuring TC for VSI seid=%d\n",
4500 pf->vsi[v]->seid);
4501 /* Will try to configure as many components */
4502 } else {
4503 /* Re-configure VSI vectors based on updated TC map */
4504 i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4505 if (pf->vsi[v]->netdev)
4506 i40e_dcbnl_set_all(pf->vsi[v]);
4507 }
4508 }
4509 }
4510
4511 /**
4512 * i40e_resume_port_tx - Resume port Tx
4513 * @pf: PF struct
4514 *
4515 * Resume a port's Tx and issue a PF reset in case of failure to
4516 * resume.
4517 **/
4518 static int i40e_resume_port_tx(struct i40e_pf *pf)
4519 {
4520 struct i40e_hw *hw = &pf->hw;
4521 int ret;
4522
4523 ret = i40e_aq_resume_port_tx(hw, NULL);
4524 if (ret) {
4525 dev_info(&pf->pdev->dev,
4526 "AQ command Resume Port Tx failed = %d\n",
4527 pf->hw.aq.asq_last_status);
4528 /* Schedule PF reset to recover */
4529 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4530 i40e_service_event_schedule(pf);
4531 }
4532
4533 return ret;
4534 }
4535
4536 /**
4537 * i40e_init_pf_dcb - Initialize DCB configuration
4538 * @pf: PF being configured
4539 *
4540 * Query the current DCB configuration and cache it
4541 * in the hardware structure
4542 **/
4543 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4544 {
4545 struct i40e_hw *hw = &pf->hw;
4546 int err = 0;
4547
4548 /* Get the initial DCB configuration */
4549 err = i40e_init_dcb(hw);
4550 if (!err) {
4551 /* Device/Function is not DCBX capable */
4552 if ((!hw->func_caps.dcb) ||
4553 (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4554 dev_info(&pf->pdev->dev,
4555 "DCBX offload is not supported or is disabled for this PF.\n");
4556
4557 if (pf->flags & I40E_FLAG_MFP_ENABLED)
4558 goto out;
4559
4560 } else {
4561 /* When status is not DISABLED then DCBX in FW */
4562 pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4563 DCB_CAP_DCBX_VER_IEEE;
4564
4565 pf->flags |= I40E_FLAG_DCB_CAPABLE;
4566 /* Enable DCB tagging only when more than one TC */
4567 if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4568 pf->flags |= I40E_FLAG_DCB_ENABLED;
4569 dev_dbg(&pf->pdev->dev,
4570 "DCBX offload is supported for this PF.\n");
4571 }
4572 } else {
4573 dev_info(&pf->pdev->dev,
4574 "AQ Querying DCB configuration failed: aq_err %d\n",
4575 pf->hw.aq.asq_last_status);
4576 }
4577
4578 out:
4579 return err;
4580 }
4581 #endif /* CONFIG_I40E_DCB */
4582 #define SPEED_SIZE 14
4583 #define FC_SIZE 8
4584 /**
4585 * i40e_print_link_message - print link up or down
4586 * @vsi: the VSI for which link needs a message
4587 */
4588 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4589 {
4590 char speed[SPEED_SIZE] = "Unknown";
4591 char fc[FC_SIZE] = "RX/TX";
4592
4593 if (!isup) {
4594 netdev_info(vsi->netdev, "NIC Link is Down\n");
4595 return;
4596 }
4597
4598 /* Warn user if link speed on NPAR enabled partition is not at
4599 * least 10GB
4600 */
4601 if (vsi->back->hw.func_caps.npar_enable &&
4602 (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4603 vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4604 netdev_warn(vsi->netdev,
4605 "The partition detected link speed that is less than 10Gbps\n");
4606
4607 switch (vsi->back->hw.phy.link_info.link_speed) {
4608 case I40E_LINK_SPEED_40GB:
4609 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4610 break;
4611 case I40E_LINK_SPEED_10GB:
4612 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4613 break;
4614 case I40E_LINK_SPEED_1GB:
4615 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4616 break;
4617 case I40E_LINK_SPEED_100MB:
4618 strncpy(speed, "100 Mbps", SPEED_SIZE);
4619 break;
4620 default:
4621 break;
4622 }
4623
4624 switch (vsi->back->hw.fc.current_mode) {
4625 case I40E_FC_FULL:
4626 strlcpy(fc, "RX/TX", FC_SIZE);
4627 break;
4628 case I40E_FC_TX_PAUSE:
4629 strlcpy(fc, "TX", FC_SIZE);
4630 break;
4631 case I40E_FC_RX_PAUSE:
4632 strlcpy(fc, "RX", FC_SIZE);
4633 break;
4634 default:
4635 strlcpy(fc, "None", FC_SIZE);
4636 break;
4637 }
4638
4639 netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4640 speed, fc);
4641 }
4642
4643 /**
4644 * i40e_up_complete - Finish the last steps of bringing up a connection
4645 * @vsi: the VSI being configured
4646 **/
4647 static int i40e_up_complete(struct i40e_vsi *vsi)
4648 {
4649 struct i40e_pf *pf = vsi->back;
4650 int err;
4651
4652 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4653 i40e_vsi_configure_msix(vsi);
4654 else
4655 i40e_configure_msi_and_legacy(vsi);
4656
4657 /* start rings */
4658 err = i40e_vsi_control_rings(vsi, true);
4659 if (err)
4660 return err;
4661
4662 clear_bit(__I40E_DOWN, &vsi->state);
4663 i40e_napi_enable_all(vsi);
4664 i40e_vsi_enable_irq(vsi);
4665
4666 if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4667 (vsi->netdev)) {
4668 i40e_print_link_message(vsi, true);
4669 netif_tx_start_all_queues(vsi->netdev);
4670 netif_carrier_on(vsi->netdev);
4671 } else if (vsi->netdev) {
4672 i40e_print_link_message(vsi, false);
4673 /* need to check for qualified module here*/
4674 if ((pf->hw.phy.link_info.link_info &
4675 I40E_AQ_MEDIA_AVAILABLE) &&
4676 (!(pf->hw.phy.link_info.an_info &
4677 I40E_AQ_QUALIFIED_MODULE)))
4678 netdev_err(vsi->netdev,
4679 "the driver failed to link because an unqualified module was detected.");
4680 }
4681
4682 /* replay FDIR SB filters */
4683 if (vsi->type == I40E_VSI_FDIR) {
4684 /* reset fd counters */
4685 pf->fd_add_err = pf->fd_atr_cnt = 0;
4686 if (pf->fd_tcp_rule > 0) {
4687 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4688 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4689 pf->fd_tcp_rule = 0;
4690 }
4691 i40e_fdir_filter_restore(vsi);
4692 }
4693 i40e_service_event_schedule(pf);
4694
4695 return 0;
4696 }
4697
4698 /**
4699 * i40e_vsi_reinit_locked - Reset the VSI
4700 * @vsi: the VSI being configured
4701 *
4702 * Rebuild the ring structs after some configuration
4703 * has changed, e.g. MTU size.
4704 **/
4705 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4706 {
4707 struct i40e_pf *pf = vsi->back;
4708
4709 WARN_ON(in_interrupt());
4710 while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4711 usleep_range(1000, 2000);
4712 i40e_down(vsi);
4713
4714 /* Give a VF some time to respond to the reset. The
4715 * two second wait is based upon the watchdog cycle in
4716 * the VF driver.
4717 */
4718 if (vsi->type == I40E_VSI_SRIOV)
4719 msleep(2000);
4720 i40e_up(vsi);
4721 clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4722 }
4723
4724 /**
4725 * i40e_up - Bring the connection back up after being down
4726 * @vsi: the VSI being configured
4727 **/
4728 int i40e_up(struct i40e_vsi *vsi)
4729 {
4730 int err;
4731
4732 err = i40e_vsi_configure(vsi);
4733 if (!err)
4734 err = i40e_up_complete(vsi);
4735
4736 return err;
4737 }
4738
4739 /**
4740 * i40e_down - Shutdown the connection processing
4741 * @vsi: the VSI being stopped
4742 **/
4743 void i40e_down(struct i40e_vsi *vsi)
4744 {
4745 int i;
4746
4747 /* It is assumed that the caller of this function
4748 * sets the vsi->state __I40E_DOWN bit.
4749 */
4750 if (vsi->netdev) {
4751 netif_carrier_off(vsi->netdev);
4752 netif_tx_disable(vsi->netdev);
4753 }
4754 i40e_vsi_disable_irq(vsi);
4755 i40e_vsi_control_rings(vsi, false);
4756 i40e_napi_disable_all(vsi);
4757
4758 for (i = 0; i < vsi->num_queue_pairs; i++) {
4759 i40e_clean_tx_ring(vsi->tx_rings[i]);
4760 i40e_clean_rx_ring(vsi->rx_rings[i]);
4761 }
4762 }
4763
4764 /**
4765 * i40e_setup_tc - configure multiple traffic classes
4766 * @netdev: net device to configure
4767 * @tc: number of traffic classes to enable
4768 **/
4769 #ifdef I40E_FCOE
4770 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4771 #else
4772 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4773 #endif
4774 {
4775 struct i40e_netdev_priv *np = netdev_priv(netdev);
4776 struct i40e_vsi *vsi = np->vsi;
4777 struct i40e_pf *pf = vsi->back;
4778 u8 enabled_tc = 0;
4779 int ret = -EINVAL;
4780 int i;
4781
4782 /* Check if DCB enabled to continue */
4783 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4784 netdev_info(netdev, "DCB is not enabled for adapter\n");
4785 goto exit;
4786 }
4787
4788 /* Check if MFP enabled */
4789 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4790 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4791 goto exit;
4792 }
4793
4794 /* Check whether tc count is within enabled limit */
4795 if (tc > i40e_pf_get_num_tc(pf)) {
4796 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4797 goto exit;
4798 }
4799
4800 /* Generate TC map for number of tc requested */
4801 for (i = 0; i < tc; i++)
4802 enabled_tc |= (1 << i);
4803
4804 /* Requesting same TC configuration as already enabled */
4805 if (enabled_tc == vsi->tc_config.enabled_tc)
4806 return 0;
4807
4808 /* Quiesce VSI queues */
4809 i40e_quiesce_vsi(vsi);
4810
4811 /* Configure VSI for enabled TCs */
4812 ret = i40e_vsi_config_tc(vsi, enabled_tc);
4813 if (ret) {
4814 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4815 vsi->seid);
4816 goto exit;
4817 }
4818
4819 /* Unquiesce VSI */
4820 i40e_unquiesce_vsi(vsi);
4821
4822 exit:
4823 return ret;
4824 }
4825
4826 /**
4827 * i40e_open - Called when a network interface is made active
4828 * @netdev: network interface device structure
4829 *
4830 * The open entry point is called when a network interface is made
4831 * active by the system (IFF_UP). At this point all resources needed
4832 * for transmit and receive operations are allocated, the interrupt
4833 * handler is registered with the OS, the netdev watchdog subtask is
4834 * enabled, and the stack is notified that the interface is ready.
4835 *
4836 * Returns 0 on success, negative value on failure
4837 **/
4838 #ifdef I40E_FCOE
4839 int i40e_open(struct net_device *netdev)
4840 #else
4841 static int i40e_open(struct net_device *netdev)
4842 #endif
4843 {
4844 struct i40e_netdev_priv *np = netdev_priv(netdev);
4845 struct i40e_vsi *vsi = np->vsi;
4846 struct i40e_pf *pf = vsi->back;
4847 int err;
4848
4849 /* disallow open during test or if eeprom is broken */
4850 if (test_bit(__I40E_TESTING, &pf->state) ||
4851 test_bit(__I40E_BAD_EEPROM, &pf->state))
4852 return -EBUSY;
4853
4854 netif_carrier_off(netdev);
4855
4856 err = i40e_vsi_open(vsi);
4857 if (err)
4858 return err;
4859
4860 /* configure global TSO hardware offload settings */
4861 wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4862 TCP_FLAG_FIN) >> 16);
4863 wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4864 TCP_FLAG_FIN |
4865 TCP_FLAG_CWR) >> 16);
4866 wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4867
4868 #ifdef CONFIG_I40E_VXLAN
4869 vxlan_get_rx_port(netdev);
4870 #endif
4871
4872 return 0;
4873 }
4874
4875 /**
4876 * i40e_vsi_open -
4877 * @vsi: the VSI to open
4878 *
4879 * Finish initialization of the VSI.
4880 *
4881 * Returns 0 on success, negative value on failure
4882 **/
4883 int i40e_vsi_open(struct i40e_vsi *vsi)
4884 {
4885 struct i40e_pf *pf = vsi->back;
4886 char int_name[I40E_INT_NAME_STR_LEN];
4887 int err;
4888
4889 /* allocate descriptors */
4890 err = i40e_vsi_setup_tx_resources(vsi);
4891 if (err)
4892 goto err_setup_tx;
4893 err = i40e_vsi_setup_rx_resources(vsi);
4894 if (err)
4895 goto err_setup_rx;
4896
4897 err = i40e_vsi_configure(vsi);
4898 if (err)
4899 goto err_setup_rx;
4900
4901 if (vsi->netdev) {
4902 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4903 dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4904 err = i40e_vsi_request_irq(vsi, int_name);
4905 if (err)
4906 goto err_setup_rx;
4907
4908 /* Notify the stack of the actual queue counts. */
4909 err = netif_set_real_num_tx_queues(vsi->netdev,
4910 vsi->num_queue_pairs);
4911 if (err)
4912 goto err_set_queues;
4913
4914 err = netif_set_real_num_rx_queues(vsi->netdev,
4915 vsi->num_queue_pairs);
4916 if (err)
4917 goto err_set_queues;
4918
4919 } else if (vsi->type == I40E_VSI_FDIR) {
4920 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4921 dev_driver_string(&pf->pdev->dev),
4922 dev_name(&pf->pdev->dev));
4923 err = i40e_vsi_request_irq(vsi, int_name);
4924
4925 } else {
4926 err = -EINVAL;
4927 goto err_setup_rx;
4928 }
4929
4930 err = i40e_up_complete(vsi);
4931 if (err)
4932 goto err_up_complete;
4933
4934 return 0;
4935
4936 err_up_complete:
4937 i40e_down(vsi);
4938 err_set_queues:
4939 i40e_vsi_free_irq(vsi);
4940 err_setup_rx:
4941 i40e_vsi_free_rx_resources(vsi);
4942 err_setup_tx:
4943 i40e_vsi_free_tx_resources(vsi);
4944 if (vsi == pf->vsi[pf->lan_vsi])
4945 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4946
4947 return err;
4948 }
4949
4950 /**
4951 * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4952 * @pf: Pointer to pf
4953 *
4954 * This function destroys the hlist where all the Flow Director
4955 * filters were saved.
4956 **/
4957 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4958 {
4959 struct i40e_fdir_filter *filter;
4960 struct hlist_node *node2;
4961
4962 hlist_for_each_entry_safe(filter, node2,
4963 &pf->fdir_filter_list, fdir_node) {
4964 hlist_del(&filter->fdir_node);
4965 kfree(filter);
4966 }
4967 pf->fdir_pf_active_filters = 0;
4968 }
4969
4970 /**
4971 * i40e_close - Disables a network interface
4972 * @netdev: network interface device structure
4973 *
4974 * The close entry point is called when an interface is de-activated
4975 * by the OS. The hardware is still under the driver's control, but
4976 * this netdev interface is disabled.
4977 *
4978 * Returns 0, this is not allowed to fail
4979 **/
4980 #ifdef I40E_FCOE
4981 int i40e_close(struct net_device *netdev)
4982 #else
4983 static int i40e_close(struct net_device *netdev)
4984 #endif
4985 {
4986 struct i40e_netdev_priv *np = netdev_priv(netdev);
4987 struct i40e_vsi *vsi = np->vsi;
4988
4989 i40e_vsi_close(vsi);
4990
4991 return 0;
4992 }
4993
4994 /**
4995 * i40e_do_reset - Start a PF or Core Reset sequence
4996 * @pf: board private structure
4997 * @reset_flags: which reset is requested
4998 *
4999 * The essential difference in resets is that the PF Reset
5000 * doesn't clear the packet buffers, doesn't reset the PE
5001 * firmware, and doesn't bother the other PFs on the chip.
5002 **/
5003 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5004 {
5005 u32 val;
5006
5007 WARN_ON(in_interrupt());
5008
5009 if (i40e_check_asq_alive(&pf->hw))
5010 i40e_vc_notify_reset(pf);
5011
5012 /* do the biggest reset indicated */
5013 if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5014
5015 /* Request a Global Reset
5016 *
5017 * This will start the chip's countdown to the actual full
5018 * chip reset event, and a warning interrupt to be sent
5019 * to all PFs, including the requestor. Our handler
5020 * for the warning interrupt will deal with the shutdown
5021 * and recovery of the switch setup.
5022 */
5023 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5024 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5025 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5026 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5027
5028 } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5029
5030 /* Request a Core Reset
5031 *
5032 * Same as Global Reset, except does *not* include the MAC/PHY
5033 */
5034 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5035 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5036 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5037 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5038 i40e_flush(&pf->hw);
5039
5040 } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
5041
5042 /* Request a Firmware Reset
5043 *
5044 * Same as Global reset, plus restarting the
5045 * embedded firmware engine.
5046 */
5047 /* enable EMP Reset */
5048 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
5049 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
5050 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
5051
5052 /* force the reset */
5053 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5054 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
5055 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5056 i40e_flush(&pf->hw);
5057
5058 } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5059
5060 /* Request a PF Reset
5061 *
5062 * Resets only the PF-specific registers
5063 *
5064 * This goes directly to the tear-down and rebuild of
5065 * the switch, since we need to do all the recovery as
5066 * for the Core Reset.
5067 */
5068 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5069 i40e_handle_reset_warning(pf);
5070
5071 } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5072 int v;
5073
5074 /* Find the VSI(s) that requested a re-init */
5075 dev_info(&pf->pdev->dev,
5076 "VSI reinit requested\n");
5077 for (v = 0; v < pf->num_alloc_vsi; v++) {
5078 struct i40e_vsi *vsi = pf->vsi[v];
5079 if (vsi != NULL &&
5080 test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5081 i40e_vsi_reinit_locked(pf->vsi[v]);
5082 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5083 }
5084 }
5085
5086 /* no further action needed, so return now */
5087 return;
5088 } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5089 int v;
5090
5091 /* Find the VSI(s) that needs to be brought down */
5092 dev_info(&pf->pdev->dev, "VSI down requested\n");
5093 for (v = 0; v < pf->num_alloc_vsi; v++) {
5094 struct i40e_vsi *vsi = pf->vsi[v];
5095 if (vsi != NULL &&
5096 test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5097 set_bit(__I40E_DOWN, &vsi->state);
5098 i40e_down(vsi);
5099 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5100 }
5101 }
5102
5103 /* no further action needed, so return now */
5104 return;
5105 } else {
5106 dev_info(&pf->pdev->dev,
5107 "bad reset request 0x%08x\n", reset_flags);
5108 return;
5109 }
5110 }
5111
5112 #ifdef CONFIG_I40E_DCB
5113 /**
5114 * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5115 * @pf: board private structure
5116 * @old_cfg: current DCB config
5117 * @new_cfg: new DCB config
5118 **/
5119 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5120 struct i40e_dcbx_config *old_cfg,
5121 struct i40e_dcbx_config *new_cfg)
5122 {
5123 bool need_reconfig = false;
5124
5125 /* Check if ETS configuration has changed */
5126 if (memcmp(&new_cfg->etscfg,
5127 &old_cfg->etscfg,
5128 sizeof(new_cfg->etscfg))) {
5129 /* If Priority Table has changed reconfig is needed */
5130 if (memcmp(&new_cfg->etscfg.prioritytable,
5131 &old_cfg->etscfg.prioritytable,
5132 sizeof(new_cfg->etscfg.prioritytable))) {
5133 need_reconfig = true;
5134 dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5135 }
5136
5137 if (memcmp(&new_cfg->etscfg.tcbwtable,
5138 &old_cfg->etscfg.tcbwtable,
5139 sizeof(new_cfg->etscfg.tcbwtable)))
5140 dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5141
5142 if (memcmp(&new_cfg->etscfg.tsatable,
5143 &old_cfg->etscfg.tsatable,
5144 sizeof(new_cfg->etscfg.tsatable)))
5145 dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5146 }
5147
5148 /* Check if PFC configuration has changed */
5149 if (memcmp(&new_cfg->pfc,
5150 &old_cfg->pfc,
5151 sizeof(new_cfg->pfc))) {
5152 need_reconfig = true;
5153 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5154 }
5155
5156 /* Check if APP Table has changed */
5157 if (memcmp(&new_cfg->app,
5158 &old_cfg->app,
5159 sizeof(new_cfg->app))) {
5160 need_reconfig = true;
5161 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5162 }
5163
5164 dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5165 need_reconfig);
5166 return need_reconfig;
5167 }
5168
5169 /**
5170 * i40e_handle_lldp_event - Handle LLDP Change MIB event
5171 * @pf: board private structure
5172 * @e: event info posted on ARQ
5173 **/
5174 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5175 struct i40e_arq_event_info *e)
5176 {
5177 struct i40e_aqc_lldp_get_mib *mib =
5178 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5179 struct i40e_hw *hw = &pf->hw;
5180 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5181 struct i40e_dcbx_config tmp_dcbx_cfg;
5182 bool need_reconfig = false;
5183 int ret = 0;
5184 u8 type;
5185
5186 /* Not DCB capable or capability disabled */
5187 if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5188 return ret;
5189
5190 /* Ignore if event is not for Nearest Bridge */
5191 type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5192 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5193 dev_dbg(&pf->pdev->dev,
5194 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5195 if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5196 return ret;
5197
5198 /* Check MIB Type and return if event for Remote MIB update */
5199 type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5200 dev_dbg(&pf->pdev->dev,
5201 "%s: LLDP event mib type %s\n", __func__,
5202 type ? "remote" : "local");
5203 if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5204 /* Update the remote cached instance and return */
5205 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5206 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5207 &hw->remote_dcbx_config);
5208 goto exit;
5209 }
5210
5211 memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5212 /* Store the old configuration */
5213 tmp_dcbx_cfg = *dcbx_cfg;
5214
5215 /* Get updated DCBX data from firmware */
5216 ret = i40e_get_dcb_config(&pf->hw);
5217 if (ret) {
5218 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5219 goto exit;
5220 }
5221
5222 /* No change detected in DCBX configs */
5223 if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5224 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5225 goto exit;
5226 }
5227
5228 need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg, dcbx_cfg);
5229
5230 i40e_dcbnl_flush_apps(pf, dcbx_cfg);
5231
5232 if (!need_reconfig)
5233 goto exit;
5234
5235 /* Enable DCB tagging only when more than one TC */
5236 if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5237 pf->flags |= I40E_FLAG_DCB_ENABLED;
5238 else
5239 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5240
5241 set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5242 /* Reconfiguration needed quiesce all VSIs */
5243 i40e_pf_quiesce_all_vsi(pf);
5244
5245 /* Changes in configuration update VEB/VSI */
5246 i40e_dcb_reconfigure(pf);
5247
5248 ret = i40e_resume_port_tx(pf);
5249
5250 clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5251 /* In case of error no point in resuming VSIs */
5252 if (ret)
5253 goto exit;
5254
5255 /* Wait for the PF's Tx queues to be disabled */
5256 ret = i40e_pf_wait_txq_disabled(pf);
5257 if (!ret)
5258 i40e_pf_unquiesce_all_vsi(pf);
5259 exit:
5260 return ret;
5261 }
5262 #endif /* CONFIG_I40E_DCB */
5263
5264 /**
5265 * i40e_do_reset_safe - Protected reset path for userland calls.
5266 * @pf: board private structure
5267 * @reset_flags: which reset is requested
5268 *
5269 **/
5270 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5271 {
5272 rtnl_lock();
5273 i40e_do_reset(pf, reset_flags);
5274 rtnl_unlock();
5275 }
5276
5277 /**
5278 * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5279 * @pf: board private structure
5280 * @e: event info posted on ARQ
5281 *
5282 * Handler for LAN Queue Overflow Event generated by the firmware for PF
5283 * and VF queues
5284 **/
5285 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5286 struct i40e_arq_event_info *e)
5287 {
5288 struct i40e_aqc_lan_overflow *data =
5289 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5290 u32 queue = le32_to_cpu(data->prtdcb_rupto);
5291 u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5292 struct i40e_hw *hw = &pf->hw;
5293 struct i40e_vf *vf;
5294 u16 vf_id;
5295
5296 dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5297 queue, qtx_ctl);
5298
5299 /* Queue belongs to VF, find the VF and issue VF reset */
5300 if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5301 >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5302 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5303 >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5304 vf_id -= hw->func_caps.vf_base_id;
5305 vf = &pf->vf[vf_id];
5306 i40e_vc_notify_vf_reset(vf);
5307 /* Allow VF to process pending reset notification */
5308 msleep(20);
5309 i40e_reset_vf(vf, false);
5310 }
5311 }
5312
5313 /**
5314 * i40e_service_event_complete - Finish up the service event
5315 * @pf: board private structure
5316 **/
5317 static void i40e_service_event_complete(struct i40e_pf *pf)
5318 {
5319 BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5320
5321 /* flush memory to make sure state is correct before next watchog */
5322 smp_mb__before_atomic();
5323 clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5324 }
5325
5326 /**
5327 * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5328 * @pf: board private structure
5329 **/
5330 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5331 {
5332 int val, fcnt_prog;
5333
5334 val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5335 fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5336 return fcnt_prog;
5337 }
5338
5339 /**
5340 * i40e_get_current_fd_count - Get the count of total FD filters programmed
5341 * @pf: board private structure
5342 **/
5343 int i40e_get_current_fd_count(struct i40e_pf *pf)
5344 {
5345 int val, fcnt_prog;
5346 val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5347 fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5348 ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5349 I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5350 return fcnt_prog;
5351 }
5352
5353 /**
5354 * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5355 * @pf: board private structure
5356 **/
5357 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5358 {
5359 u32 fcnt_prog, fcnt_avail;
5360
5361 if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5362 return;
5363
5364 /* Check if, FD SB or ATR was auto disabled and if there is enough room
5365 * to re-enable
5366 */
5367 fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5368 fcnt_avail = pf->fdir_pf_filter_count;
5369 if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5370 (pf->fd_add_err == 0) ||
5371 (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5372 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5373 (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5374 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5375 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5376 }
5377 }
5378 /* Wait for some more space to be available to turn on ATR */
5379 if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5380 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5381 (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5382 pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5383 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5384 }
5385 }
5386 }
5387
5388 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5389 /**
5390 * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5391 * @pf: board private structure
5392 **/
5393 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5394 {
5395 int flush_wait_retry = 50;
5396 int reg;
5397
5398 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5399 return;
5400
5401 if (time_after(jiffies, pf->fd_flush_timestamp +
5402 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5403 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5404 pf->fd_flush_timestamp = jiffies;
5405 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5406 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5407 /* flush all filters */
5408 wr32(&pf->hw, I40E_PFQF_CTL_1,
5409 I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5410 i40e_flush(&pf->hw);
5411 pf->fd_flush_cnt++;
5412 pf->fd_add_err = 0;
5413 do {
5414 /* Check FD flush status every 5-6msec */
5415 usleep_range(5000, 6000);
5416 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5417 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5418 break;
5419 } while (flush_wait_retry--);
5420 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5421 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5422 } else {
5423 /* replay sideband filters */
5424 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5425
5426 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5427 pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5428 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5429 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5430 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5431 }
5432 }
5433 }
5434
5435 /**
5436 * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5437 * @pf: board private structure
5438 **/
5439 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5440 {
5441 return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5442 }
5443
5444 /* We can see up to 256 filter programming desc in transit if the filters are
5445 * being applied really fast; before we see the first
5446 * filter miss error on Rx queue 0. Accumulating enough error messages before
5447 * reacting will make sure we don't cause flush too often.
5448 */
5449 #define I40E_MAX_FD_PROGRAM_ERROR 256
5450
5451 /**
5452 * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5453 * @pf: board private structure
5454 **/
5455 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5456 {
5457
5458 /* if interface is down do nothing */
5459 if (test_bit(__I40E_DOWN, &pf->state))
5460 return;
5461
5462 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5463 return;
5464
5465 if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5466 (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5467 (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5468 i40e_fdir_flush_and_replay(pf);
5469
5470 i40e_fdir_check_and_reenable(pf);
5471
5472 }
5473
5474 /**
5475 * i40e_vsi_link_event - notify VSI of a link event
5476 * @vsi: vsi to be notified
5477 * @link_up: link up or down
5478 **/
5479 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5480 {
5481 if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5482 return;
5483
5484 switch (vsi->type) {
5485 case I40E_VSI_MAIN:
5486 #ifdef I40E_FCOE
5487 case I40E_VSI_FCOE:
5488 #endif
5489 if (!vsi->netdev || !vsi->netdev_registered)
5490 break;
5491
5492 if (link_up) {
5493 netif_carrier_on(vsi->netdev);
5494 netif_tx_wake_all_queues(vsi->netdev);
5495 } else {
5496 netif_carrier_off(vsi->netdev);
5497 netif_tx_stop_all_queues(vsi->netdev);
5498 }
5499 break;
5500
5501 case I40E_VSI_SRIOV:
5502 case I40E_VSI_VMDQ2:
5503 case I40E_VSI_CTRL:
5504 case I40E_VSI_MIRROR:
5505 default:
5506 /* there is no notification for other VSIs */
5507 break;
5508 }
5509 }
5510
5511 /**
5512 * i40e_veb_link_event - notify elements on the veb of a link event
5513 * @veb: veb to be notified
5514 * @link_up: link up or down
5515 **/
5516 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5517 {
5518 struct i40e_pf *pf;
5519 int i;
5520
5521 if (!veb || !veb->pf)
5522 return;
5523 pf = veb->pf;
5524
5525 /* depth first... */
5526 for (i = 0; i < I40E_MAX_VEB; i++)
5527 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5528 i40e_veb_link_event(pf->veb[i], link_up);
5529
5530 /* ... now the local VSIs */
5531 for (i = 0; i < pf->num_alloc_vsi; i++)
5532 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5533 i40e_vsi_link_event(pf->vsi[i], link_up);
5534 }
5535
5536 /**
5537 * i40e_link_event - Update netif_carrier status
5538 * @pf: board private structure
5539 **/
5540 static void i40e_link_event(struct i40e_pf *pf)
5541 {
5542 bool new_link, old_link;
5543 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5544 u8 new_link_speed, old_link_speed;
5545
5546 /* set this to force the get_link_status call to refresh state */
5547 pf->hw.phy.get_link_info = true;
5548
5549 old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5550 new_link = i40e_get_link_status(&pf->hw);
5551 old_link_speed = pf->hw.phy.link_info_old.link_speed;
5552 new_link_speed = pf->hw.phy.link_info.link_speed;
5553
5554 if (new_link == old_link &&
5555 new_link_speed == old_link_speed &&
5556 (test_bit(__I40E_DOWN, &vsi->state) ||
5557 new_link == netif_carrier_ok(vsi->netdev)))
5558 return;
5559
5560 if (!test_bit(__I40E_DOWN, &vsi->state))
5561 i40e_print_link_message(vsi, new_link);
5562
5563 /* Notify the base of the switch tree connected to
5564 * the link. Floating VEBs are not notified.
5565 */
5566 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5567 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5568 else
5569 i40e_vsi_link_event(vsi, new_link);
5570
5571 if (pf->vf)
5572 i40e_vc_notify_link_state(pf);
5573
5574 if (pf->flags & I40E_FLAG_PTP)
5575 i40e_ptp_set_increment(pf);
5576 }
5577
5578 /**
5579 * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5580 * @pf: board private structure
5581 *
5582 * Set the per-queue flags to request a check for stuck queues in the irq
5583 * clean functions, then force interrupts to be sure the irq clean is called.
5584 **/
5585 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5586 {
5587 int i, v;
5588
5589 /* If we're down or resetting, just bail */
5590 if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5591 return;
5592
5593 /* for each VSI/netdev
5594 * for each Tx queue
5595 * set the check flag
5596 * for each q_vector
5597 * force an interrupt
5598 */
5599 for (v = 0; v < pf->num_alloc_vsi; v++) {
5600 struct i40e_vsi *vsi = pf->vsi[v];
5601 int armed = 0;
5602
5603 if (!pf->vsi[v] ||
5604 test_bit(__I40E_DOWN, &vsi->state) ||
5605 (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5606 continue;
5607
5608 for (i = 0; i < vsi->num_queue_pairs; i++) {
5609 set_check_for_tx_hang(vsi->tx_rings[i]);
5610 if (test_bit(__I40E_HANG_CHECK_ARMED,
5611 &vsi->tx_rings[i]->state))
5612 armed++;
5613 }
5614
5615 if (armed) {
5616 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5617 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5618 (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5619 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5620 I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5621 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5622 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5623 } else {
5624 u16 vec = vsi->base_vector - 1;
5625 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5626 I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5627 I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5628 I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5629 I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5630 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5631 wr32(&vsi->back->hw,
5632 I40E_PFINT_DYN_CTLN(vec), val);
5633 }
5634 i40e_flush(&vsi->back->hw);
5635 }
5636 }
5637 }
5638
5639 /**
5640 * i40e_watchdog_subtask - periodic checks not using event driven response
5641 * @pf: board private structure
5642 **/
5643 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5644 {
5645 int i;
5646
5647 /* if interface is down do nothing */
5648 if (test_bit(__I40E_DOWN, &pf->state) ||
5649 test_bit(__I40E_CONFIG_BUSY, &pf->state))
5650 return;
5651
5652 /* make sure we don't do these things too often */
5653 if (time_before(jiffies, (pf->service_timer_previous +
5654 pf->service_timer_period)))
5655 return;
5656 pf->service_timer_previous = jiffies;
5657
5658 i40e_check_hang_subtask(pf);
5659 i40e_link_event(pf);
5660
5661 /* Update the stats for active netdevs so the network stack
5662 * can look at updated numbers whenever it cares to
5663 */
5664 for (i = 0; i < pf->num_alloc_vsi; i++)
5665 if (pf->vsi[i] && pf->vsi[i]->netdev)
5666 i40e_update_stats(pf->vsi[i]);
5667
5668 /* Update the stats for the active switching components */
5669 for (i = 0; i < I40E_MAX_VEB; i++)
5670 if (pf->veb[i])
5671 i40e_update_veb_stats(pf->veb[i]);
5672
5673 i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5674 }
5675
5676 /**
5677 * i40e_reset_subtask - Set up for resetting the device and driver
5678 * @pf: board private structure
5679 **/
5680 static void i40e_reset_subtask(struct i40e_pf *pf)
5681 {
5682 u32 reset_flags = 0;
5683
5684 rtnl_lock();
5685 if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5686 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5687 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5688 }
5689 if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5690 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5691 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5692 }
5693 if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5694 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5695 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5696 }
5697 if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5698 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5699 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5700 }
5701 if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5702 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5703 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5704 }
5705
5706 /* If there's a recovery already waiting, it takes
5707 * precedence before starting a new reset sequence.
5708 */
5709 if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5710 i40e_handle_reset_warning(pf);
5711 goto unlock;
5712 }
5713
5714 /* If we're already down or resetting, just bail */
5715 if (reset_flags &&
5716 !test_bit(__I40E_DOWN, &pf->state) &&
5717 !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5718 i40e_do_reset(pf, reset_flags);
5719
5720 unlock:
5721 rtnl_unlock();
5722 }
5723
5724 /**
5725 * i40e_handle_link_event - Handle link event
5726 * @pf: board private structure
5727 * @e: event info posted on ARQ
5728 **/
5729 static void i40e_handle_link_event(struct i40e_pf *pf,
5730 struct i40e_arq_event_info *e)
5731 {
5732 struct i40e_hw *hw = &pf->hw;
5733 struct i40e_aqc_get_link_status *status =
5734 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5735 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5736
5737 /* save off old link status information */
5738 memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5739 sizeof(pf->hw.phy.link_info_old));
5740
5741 /* Do a new status request to re-enable LSE reporting
5742 * and load new status information into the hw struct
5743 * This completely ignores any state information
5744 * in the ARQ event info, instead choosing to always
5745 * issue the AQ update link status command.
5746 */
5747 i40e_link_event(pf);
5748
5749 /* check for unqualified module, if link is down */
5750 if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5751 (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5752 (!(status->link_info & I40E_AQ_LINK_UP)))
5753 dev_err(&pf->pdev->dev,
5754 "The driver failed to link because an unqualified module was detected.\n");
5755 }
5756
5757 /**
5758 * i40e_clean_adminq_subtask - Clean the AdminQ rings
5759 * @pf: board private structure
5760 **/
5761 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5762 {
5763 struct i40e_arq_event_info event;
5764 struct i40e_hw *hw = &pf->hw;
5765 u16 pending, i = 0;
5766 i40e_status ret;
5767 u16 opcode;
5768 u32 oldval;
5769 u32 val;
5770
5771 /* Do not run clean AQ when PF reset fails */
5772 if (test_bit(__I40E_RESET_FAILED, &pf->state))
5773 return;
5774
5775 /* check for error indications */
5776 val = rd32(&pf->hw, pf->hw.aq.arq.len);
5777 oldval = val;
5778 if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5779 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5780 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5781 }
5782 if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5783 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5784 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5785 }
5786 if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5787 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5788 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5789 }
5790 if (oldval != val)
5791 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5792
5793 val = rd32(&pf->hw, pf->hw.aq.asq.len);
5794 oldval = val;
5795 if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5796 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5797 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5798 }
5799 if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5800 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5801 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5802 }
5803 if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5804 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5805 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5806 }
5807 if (oldval != val)
5808 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5809
5810 event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5811 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5812 if (!event.msg_buf)
5813 return;
5814
5815 do {
5816 ret = i40e_clean_arq_element(hw, &event, &pending);
5817 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5818 break;
5819 else if (ret) {
5820 dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5821 break;
5822 }
5823
5824 opcode = le16_to_cpu(event.desc.opcode);
5825 switch (opcode) {
5826
5827 case i40e_aqc_opc_get_link_status:
5828 i40e_handle_link_event(pf, &event);
5829 break;
5830 case i40e_aqc_opc_send_msg_to_pf:
5831 ret = i40e_vc_process_vf_msg(pf,
5832 le16_to_cpu(event.desc.retval),
5833 le32_to_cpu(event.desc.cookie_high),
5834 le32_to_cpu(event.desc.cookie_low),
5835 event.msg_buf,
5836 event.msg_len);
5837 break;
5838 case i40e_aqc_opc_lldp_update_mib:
5839 dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5840 #ifdef CONFIG_I40E_DCB
5841 rtnl_lock();
5842 ret = i40e_handle_lldp_event(pf, &event);
5843 rtnl_unlock();
5844 #endif /* CONFIG_I40E_DCB */
5845 break;
5846 case i40e_aqc_opc_event_lan_overflow:
5847 dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5848 i40e_handle_lan_overflow_event(pf, &event);
5849 break;
5850 case i40e_aqc_opc_send_msg_to_peer:
5851 dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5852 break;
5853 default:
5854 dev_info(&pf->pdev->dev,
5855 "ARQ Error: Unknown event 0x%04x received\n",
5856 opcode);
5857 break;
5858 }
5859 } while (pending && (i++ < pf->adminq_work_limit));
5860
5861 clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5862 /* re-enable Admin queue interrupt cause */
5863 val = rd32(hw, I40E_PFINT_ICR0_ENA);
5864 val |= I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5865 wr32(hw, I40E_PFINT_ICR0_ENA, val);
5866 i40e_flush(hw);
5867
5868 kfree(event.msg_buf);
5869 }
5870
5871 /**
5872 * i40e_verify_eeprom - make sure eeprom is good to use
5873 * @pf: board private structure
5874 **/
5875 static void i40e_verify_eeprom(struct i40e_pf *pf)
5876 {
5877 int err;
5878
5879 err = i40e_diag_eeprom_test(&pf->hw);
5880 if (err) {
5881 /* retry in case of garbage read */
5882 err = i40e_diag_eeprom_test(&pf->hw);
5883 if (err) {
5884 dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5885 err);
5886 set_bit(__I40E_BAD_EEPROM, &pf->state);
5887 }
5888 }
5889
5890 if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5891 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5892 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5893 }
5894 }
5895
5896 /**
5897 * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5898 * @veb: pointer to the VEB instance
5899 *
5900 * This is a recursive function that first builds the attached VSIs then
5901 * recurses in to build the next layer of VEB. We track the connections
5902 * through our own index numbers because the seid's from the HW could
5903 * change across the reset.
5904 **/
5905 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5906 {
5907 struct i40e_vsi *ctl_vsi = NULL;
5908 struct i40e_pf *pf = veb->pf;
5909 int v, veb_idx;
5910 int ret;
5911
5912 /* build VSI that owns this VEB, temporarily attached to base VEB */
5913 for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5914 if (pf->vsi[v] &&
5915 pf->vsi[v]->veb_idx == veb->idx &&
5916 pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5917 ctl_vsi = pf->vsi[v];
5918 break;
5919 }
5920 }
5921 if (!ctl_vsi) {
5922 dev_info(&pf->pdev->dev,
5923 "missing owner VSI for veb_idx %d\n", veb->idx);
5924 ret = -ENOENT;
5925 goto end_reconstitute;
5926 }
5927 if (ctl_vsi != pf->vsi[pf->lan_vsi])
5928 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5929 ret = i40e_add_vsi(ctl_vsi);
5930 if (ret) {
5931 dev_info(&pf->pdev->dev,
5932 "rebuild of owner VSI failed: %d\n", ret);
5933 goto end_reconstitute;
5934 }
5935 i40e_vsi_reset_stats(ctl_vsi);
5936
5937 /* create the VEB in the switch and move the VSI onto the VEB */
5938 ret = i40e_add_veb(veb, ctl_vsi);
5939 if (ret)
5940 goto end_reconstitute;
5941
5942 /* Enable LB mode for the main VSI now that it is on a VEB */
5943 i40e_enable_pf_switch_lb(pf);
5944
5945 /* create the remaining VSIs attached to this VEB */
5946 for (v = 0; v < pf->num_alloc_vsi; v++) {
5947 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5948 continue;
5949
5950 if (pf->vsi[v]->veb_idx == veb->idx) {
5951 struct i40e_vsi *vsi = pf->vsi[v];
5952 vsi->uplink_seid = veb->seid;
5953 ret = i40e_add_vsi(vsi);
5954 if (ret) {
5955 dev_info(&pf->pdev->dev,
5956 "rebuild of vsi_idx %d failed: %d\n",
5957 v, ret);
5958 goto end_reconstitute;
5959 }
5960 i40e_vsi_reset_stats(vsi);
5961 }
5962 }
5963
5964 /* create any VEBs attached to this VEB - RECURSION */
5965 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5966 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5967 pf->veb[veb_idx]->uplink_seid = veb->seid;
5968 ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5969 if (ret)
5970 break;
5971 }
5972 }
5973
5974 end_reconstitute:
5975 return ret;
5976 }
5977
5978 /**
5979 * i40e_get_capabilities - get info about the HW
5980 * @pf: the PF struct
5981 **/
5982 static int i40e_get_capabilities(struct i40e_pf *pf)
5983 {
5984 struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5985 u16 data_size;
5986 int buf_len;
5987 int err;
5988
5989 buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5990 do {
5991 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5992 if (!cap_buf)
5993 return -ENOMEM;
5994
5995 /* this loads the data into the hw struct for us */
5996 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5997 &data_size,
5998 i40e_aqc_opc_list_func_capabilities,
5999 NULL);
6000 /* data loaded, buffer no longer needed */
6001 kfree(cap_buf);
6002
6003 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6004 /* retry with a larger buffer */
6005 buf_len = data_size;
6006 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6007 dev_info(&pf->pdev->dev,
6008 "capability discovery failed: aq=%d\n",
6009 pf->hw.aq.asq_last_status);
6010 return -ENODEV;
6011 }
6012 } while (err);
6013
6014 if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6015 (pf->hw.aq.fw_maj_ver < 2)) {
6016 pf->hw.func_caps.num_msix_vectors++;
6017 pf->hw.func_caps.num_msix_vectors_vf++;
6018 }
6019
6020 if (pf->hw.debug_mask & I40E_DEBUG_USER)
6021 dev_info(&pf->pdev->dev,
6022 "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
6023 pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6024 pf->hw.func_caps.num_msix_vectors,
6025 pf->hw.func_caps.num_msix_vectors_vf,
6026 pf->hw.func_caps.fd_filters_guaranteed,
6027 pf->hw.func_caps.fd_filters_best_effort,
6028 pf->hw.func_caps.num_tx_qp,
6029 pf->hw.func_caps.num_vsis);
6030
6031 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6032 + pf->hw.func_caps.num_vfs)
6033 if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6034 dev_info(&pf->pdev->dev,
6035 "got num_vsis %d, setting num_vsis to %d\n",
6036 pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6037 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6038 }
6039
6040 return 0;
6041 }
6042
6043 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6044
6045 /**
6046 * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6047 * @pf: board private structure
6048 **/
6049 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6050 {
6051 struct i40e_vsi *vsi;
6052 int i;
6053
6054 /* quick workaround for an NVM issue that leaves a critical register
6055 * uninitialized
6056 */
6057 if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6058 static const u32 hkey[] = {
6059 0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6060 0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6061 0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6062 0x95b3a76d};
6063
6064 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6065 wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6066 }
6067
6068 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6069 return;
6070
6071 /* find existing VSI and see if it needs configuring */
6072 vsi = NULL;
6073 for (i = 0; i < pf->num_alloc_vsi; i++) {
6074 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6075 vsi = pf->vsi[i];
6076 break;
6077 }
6078 }
6079
6080 /* create a new VSI if none exists */
6081 if (!vsi) {
6082 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6083 pf->vsi[pf->lan_vsi]->seid, 0);
6084 if (!vsi) {
6085 dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6086 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6087 return;
6088 }
6089 }
6090
6091 i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6092 }
6093
6094 /**
6095 * i40e_fdir_teardown - release the Flow Director resources
6096 * @pf: board private structure
6097 **/
6098 static void i40e_fdir_teardown(struct i40e_pf *pf)
6099 {
6100 int i;
6101
6102 i40e_fdir_filter_exit(pf);
6103 for (i = 0; i < pf->num_alloc_vsi; i++) {
6104 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6105 i40e_vsi_release(pf->vsi[i]);
6106 break;
6107 }
6108 }
6109 }
6110
6111 /**
6112 * i40e_prep_for_reset - prep for the core to reset
6113 * @pf: board private structure
6114 *
6115 * Close up the VFs and other things in prep for pf Reset.
6116 **/
6117 static void i40e_prep_for_reset(struct i40e_pf *pf)
6118 {
6119 struct i40e_hw *hw = &pf->hw;
6120 i40e_status ret = 0;
6121 u32 v;
6122
6123 clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6124 if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6125 return;
6126
6127 dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6128
6129 /* quiesce the VSIs and their queues that are not already DOWN */
6130 i40e_pf_quiesce_all_vsi(pf);
6131
6132 for (v = 0; v < pf->num_alloc_vsi; v++) {
6133 if (pf->vsi[v])
6134 pf->vsi[v]->seid = 0;
6135 }
6136
6137 i40e_shutdown_adminq(&pf->hw);
6138
6139 /* call shutdown HMC */
6140 if (hw->hmc.hmc_obj) {
6141 ret = i40e_shutdown_lan_hmc(hw);
6142 if (ret)
6143 dev_warn(&pf->pdev->dev,
6144 "shutdown_lan_hmc failed: %d\n", ret);
6145 }
6146 }
6147
6148 /**
6149 * i40e_send_version - update firmware with driver version
6150 * @pf: PF struct
6151 */
6152 static void i40e_send_version(struct i40e_pf *pf)
6153 {
6154 struct i40e_driver_version dv;
6155
6156 dv.major_version = DRV_VERSION_MAJOR;
6157 dv.minor_version = DRV_VERSION_MINOR;
6158 dv.build_version = DRV_VERSION_BUILD;
6159 dv.subbuild_version = 0;
6160 strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6161 i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6162 }
6163
6164 /**
6165 * i40e_reset_and_rebuild - reset and rebuild using a saved config
6166 * @pf: board private structure
6167 * @reinit: if the Main VSI needs to re-initialized.
6168 **/
6169 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6170 {
6171 struct i40e_hw *hw = &pf->hw;
6172 u8 set_fc_aq_fail = 0;
6173 i40e_status ret;
6174 u32 v;
6175
6176 /* Now we wait for GRST to settle out.
6177 * We don't have to delete the VEBs or VSIs from the hw switch
6178 * because the reset will make them disappear.
6179 */
6180 ret = i40e_pf_reset(hw);
6181 if (ret) {
6182 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6183 set_bit(__I40E_RESET_FAILED, &pf->state);
6184 goto clear_recovery;
6185 }
6186 pf->pfr_count++;
6187
6188 if (test_bit(__I40E_DOWN, &pf->state))
6189 goto clear_recovery;
6190 dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6191
6192 /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6193 ret = i40e_init_adminq(&pf->hw);
6194 if (ret) {
6195 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6196 goto clear_recovery;
6197 }
6198
6199 /* re-verify the eeprom if we just had an EMP reset */
6200 if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
6201 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
6202 i40e_verify_eeprom(pf);
6203 }
6204
6205 i40e_clear_pxe_mode(hw);
6206 ret = i40e_get_capabilities(pf);
6207 if (ret) {
6208 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6209 ret);
6210 goto end_core_reset;
6211 }
6212
6213 ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6214 hw->func_caps.num_rx_qp,
6215 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6216 if (ret) {
6217 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6218 goto end_core_reset;
6219 }
6220 ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6221 if (ret) {
6222 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6223 goto end_core_reset;
6224 }
6225
6226 #ifdef CONFIG_I40E_DCB
6227 ret = i40e_init_pf_dcb(pf);
6228 if (ret) {
6229 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6230 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6231 /* Continue without DCB enabled */
6232 }
6233 #endif /* CONFIG_I40E_DCB */
6234 #ifdef I40E_FCOE
6235 ret = i40e_init_pf_fcoe(pf);
6236 if (ret)
6237 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6238
6239 #endif
6240 /* do basic switch setup */
6241 ret = i40e_setup_pf_switch(pf, reinit);
6242 if (ret)
6243 goto end_core_reset;
6244
6245 /* driver is only interested in link up/down and module qualification
6246 * reports from firmware
6247 */
6248 ret = i40e_aq_set_phy_int_mask(&pf->hw,
6249 I40E_AQ_EVENT_LINK_UPDOWN |
6250 I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6251 if (ret)
6252 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6253
6254 /* make sure our flow control settings are restored */
6255 ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6256 if (ret)
6257 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6258
6259 /* Rebuild the VSIs and VEBs that existed before reset.
6260 * They are still in our local switch element arrays, so only
6261 * need to rebuild the switch model in the HW.
6262 *
6263 * If there were VEBs but the reconstitution failed, we'll try
6264 * try to recover minimal use by getting the basic PF VSI working.
6265 */
6266 if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6267 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6268 /* find the one VEB connected to the MAC, and find orphans */
6269 for (v = 0; v < I40E_MAX_VEB; v++) {
6270 if (!pf->veb[v])
6271 continue;
6272
6273 if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6274 pf->veb[v]->uplink_seid == 0) {
6275 ret = i40e_reconstitute_veb(pf->veb[v]);
6276
6277 if (!ret)
6278 continue;
6279
6280 /* If Main VEB failed, we're in deep doodoo,
6281 * so give up rebuilding the switch and set up
6282 * for minimal rebuild of PF VSI.
6283 * If orphan failed, we'll report the error
6284 * but try to keep going.
6285 */
6286 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6287 dev_info(&pf->pdev->dev,
6288 "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6289 ret);
6290 pf->vsi[pf->lan_vsi]->uplink_seid
6291 = pf->mac_seid;
6292 break;
6293 } else if (pf->veb[v]->uplink_seid == 0) {
6294 dev_info(&pf->pdev->dev,
6295 "rebuild of orphan VEB failed: %d\n",
6296 ret);
6297 }
6298 }
6299 }
6300 }
6301
6302 if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6303 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6304 /* no VEB, so rebuild only the Main VSI */
6305 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6306 if (ret) {
6307 dev_info(&pf->pdev->dev,
6308 "rebuild of Main VSI failed: %d\n", ret);
6309 goto end_core_reset;
6310 }
6311 }
6312
6313 msleep(75);
6314 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6315 if (ret) {
6316 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6317 pf->hw.aq.asq_last_status);
6318 }
6319
6320 /* reinit the misc interrupt */
6321 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6322 ret = i40e_setup_misc_vector(pf);
6323
6324 /* restart the VSIs that were rebuilt and running before the reset */
6325 i40e_pf_unquiesce_all_vsi(pf);
6326
6327 if (pf->num_alloc_vfs) {
6328 for (v = 0; v < pf->num_alloc_vfs; v++)
6329 i40e_reset_vf(&pf->vf[v], true);
6330 }
6331
6332 /* tell the firmware that we're starting */
6333 i40e_send_version(pf);
6334
6335 end_core_reset:
6336 clear_bit(__I40E_RESET_FAILED, &pf->state);
6337 clear_recovery:
6338 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6339 }
6340
6341 /**
6342 * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6343 * @pf: board private structure
6344 *
6345 * Close up the VFs and other things in prep for a Core Reset,
6346 * then get ready to rebuild the world.
6347 **/
6348 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6349 {
6350 i40e_prep_for_reset(pf);
6351 i40e_reset_and_rebuild(pf, false);
6352 }
6353
6354 /**
6355 * i40e_handle_mdd_event
6356 * @pf: pointer to the pf structure
6357 *
6358 * Called from the MDD irq handler to identify possibly malicious vfs
6359 **/
6360 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6361 {
6362 struct i40e_hw *hw = &pf->hw;
6363 bool mdd_detected = false;
6364 bool pf_mdd_detected = false;
6365 struct i40e_vf *vf;
6366 u32 reg;
6367 int i;
6368
6369 if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6370 return;
6371
6372 /* find what triggered the MDD event */
6373 reg = rd32(hw, I40E_GL_MDET_TX);
6374 if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6375 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6376 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6377 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6378 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6379 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6380 I40E_GL_MDET_TX_EVENT_SHIFT;
6381 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6382 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6383 pf->hw.func_caps.base_queue;
6384 if (netif_msg_tx_err(pf))
6385 dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6386 event, queue, pf_num, vf_num);
6387 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6388 mdd_detected = true;
6389 }
6390 reg = rd32(hw, I40E_GL_MDET_RX);
6391 if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6392 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6393 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6394 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6395 I40E_GL_MDET_RX_EVENT_SHIFT;
6396 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6397 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6398 pf->hw.func_caps.base_queue;
6399 if (netif_msg_rx_err(pf))
6400 dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6401 event, queue, func);
6402 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6403 mdd_detected = true;
6404 }
6405
6406 if (mdd_detected) {
6407 reg = rd32(hw, I40E_PF_MDET_TX);
6408 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6409 wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6410 dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6411 pf_mdd_detected = true;
6412 }
6413 reg = rd32(hw, I40E_PF_MDET_RX);
6414 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6415 wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6416 dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6417 pf_mdd_detected = true;
6418 }
6419 /* Queue belongs to the PF, initiate a reset */
6420 if (pf_mdd_detected) {
6421 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6422 i40e_service_event_schedule(pf);
6423 }
6424 }
6425
6426 /* see if one of the VFs needs its hand slapped */
6427 for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6428 vf = &(pf->vf[i]);
6429 reg = rd32(hw, I40E_VP_MDET_TX(i));
6430 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6431 wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6432 vf->num_mdd_events++;
6433 dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6434 i);
6435 }
6436
6437 reg = rd32(hw, I40E_VP_MDET_RX(i));
6438 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6439 wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6440 vf->num_mdd_events++;
6441 dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6442 i);
6443 }
6444
6445 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6446 dev_info(&pf->pdev->dev,
6447 "Too many MDD events on VF %d, disabled\n", i);
6448 dev_info(&pf->pdev->dev,
6449 "Use PF Control I/F to re-enable the VF\n");
6450 set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6451 }
6452 }
6453
6454 /* re-enable mdd interrupt cause */
6455 clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6456 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6457 reg |= I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6458 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6459 i40e_flush(hw);
6460 }
6461
6462 #ifdef CONFIG_I40E_VXLAN
6463 /**
6464 * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6465 * @pf: board private structure
6466 **/
6467 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6468 {
6469 struct i40e_hw *hw = &pf->hw;
6470 i40e_status ret;
6471 u8 filter_index;
6472 __be16 port;
6473 int i;
6474
6475 if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6476 return;
6477
6478 pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6479
6480 for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6481 if (pf->pending_vxlan_bitmap & (1 << i)) {
6482 pf->pending_vxlan_bitmap &= ~(1 << i);
6483 port = pf->vxlan_ports[i];
6484 ret = port ?
6485 i40e_aq_add_udp_tunnel(hw, ntohs(port),
6486 I40E_AQC_TUNNEL_TYPE_VXLAN,
6487 &filter_index, NULL)
6488 : i40e_aq_del_udp_tunnel(hw, i, NULL);
6489
6490 if (ret) {
6491 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6492 port ? "adding" : "deleting",
6493 ntohs(port), port ? i : i);
6494
6495 pf->vxlan_ports[i] = 0;
6496 } else {
6497 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6498 port ? "Added" : "Deleted",
6499 ntohs(port), port ? i : filter_index);
6500 }
6501 }
6502 }
6503 }
6504
6505 #endif
6506 /**
6507 * i40e_service_task - Run the driver's async subtasks
6508 * @work: pointer to work_struct containing our data
6509 **/
6510 static void i40e_service_task(struct work_struct *work)
6511 {
6512 struct i40e_pf *pf = container_of(work,
6513 struct i40e_pf,
6514 service_task);
6515 unsigned long start_time = jiffies;
6516
6517 /* don't bother with service tasks if a reset is in progress */
6518 if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6519 i40e_service_event_complete(pf);
6520 return;
6521 }
6522
6523 i40e_reset_subtask(pf);
6524 i40e_handle_mdd_event(pf);
6525 i40e_vc_process_vflr_event(pf);
6526 i40e_watchdog_subtask(pf);
6527 i40e_fdir_reinit_subtask(pf);
6528 i40e_sync_filters_subtask(pf);
6529 #ifdef CONFIG_I40E_VXLAN
6530 i40e_sync_vxlan_filters_subtask(pf);
6531 #endif
6532 i40e_clean_adminq_subtask(pf);
6533
6534 i40e_service_event_complete(pf);
6535
6536 /* If the tasks have taken longer than one timer cycle or there
6537 * is more work to be done, reschedule the service task now
6538 * rather than wait for the timer to tick again.
6539 */
6540 if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6541 test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state) ||
6542 test_bit(__I40E_MDD_EVENT_PENDING, &pf->state) ||
6543 test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6544 i40e_service_event_schedule(pf);
6545 }
6546
6547 /**
6548 * i40e_service_timer - timer callback
6549 * @data: pointer to PF struct
6550 **/
6551 static void i40e_service_timer(unsigned long data)
6552 {
6553 struct i40e_pf *pf = (struct i40e_pf *)data;
6554
6555 mod_timer(&pf->service_timer,
6556 round_jiffies(jiffies + pf->service_timer_period));
6557 i40e_service_event_schedule(pf);
6558 }
6559
6560 /**
6561 * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6562 * @vsi: the VSI being configured
6563 **/
6564 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6565 {
6566 struct i40e_pf *pf = vsi->back;
6567
6568 switch (vsi->type) {
6569 case I40E_VSI_MAIN:
6570 vsi->alloc_queue_pairs = pf->num_lan_qps;
6571 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6572 I40E_REQ_DESCRIPTOR_MULTIPLE);
6573 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6574 vsi->num_q_vectors = pf->num_lan_msix;
6575 else
6576 vsi->num_q_vectors = 1;
6577
6578 break;
6579
6580 case I40E_VSI_FDIR:
6581 vsi->alloc_queue_pairs = 1;
6582 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6583 I40E_REQ_DESCRIPTOR_MULTIPLE);
6584 vsi->num_q_vectors = 1;
6585 break;
6586
6587 case I40E_VSI_VMDQ2:
6588 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6589 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6590 I40E_REQ_DESCRIPTOR_MULTIPLE);
6591 vsi->num_q_vectors = pf->num_vmdq_msix;
6592 break;
6593
6594 case I40E_VSI_SRIOV:
6595 vsi->alloc_queue_pairs = pf->num_vf_qps;
6596 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6597 I40E_REQ_DESCRIPTOR_MULTIPLE);
6598 break;
6599
6600 #ifdef I40E_FCOE
6601 case I40E_VSI_FCOE:
6602 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6603 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6604 I40E_REQ_DESCRIPTOR_MULTIPLE);
6605 vsi->num_q_vectors = pf->num_fcoe_msix;
6606 break;
6607
6608 #endif /* I40E_FCOE */
6609 default:
6610 WARN_ON(1);
6611 return -ENODATA;
6612 }
6613
6614 return 0;
6615 }
6616
6617 /**
6618 * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6619 * @type: VSI pointer
6620 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6621 *
6622 * On error: returns error code (negative)
6623 * On success: returns 0
6624 **/
6625 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6626 {
6627 int size;
6628 int ret = 0;
6629
6630 /* allocate memory for both Tx and Rx ring pointers */
6631 size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6632 vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6633 if (!vsi->tx_rings)
6634 return -ENOMEM;
6635 vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6636
6637 if (alloc_qvectors) {
6638 /* allocate memory for q_vector pointers */
6639 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6640 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6641 if (!vsi->q_vectors) {
6642 ret = -ENOMEM;
6643 goto err_vectors;
6644 }
6645 }
6646 return ret;
6647
6648 err_vectors:
6649 kfree(vsi->tx_rings);
6650 return ret;
6651 }
6652
6653 /**
6654 * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6655 * @pf: board private structure
6656 * @type: type of VSI
6657 *
6658 * On error: returns error code (negative)
6659 * On success: returns vsi index in PF (positive)
6660 **/
6661 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6662 {
6663 int ret = -ENODEV;
6664 struct i40e_vsi *vsi;
6665 int vsi_idx;
6666 int i;
6667
6668 /* Need to protect the allocation of the VSIs at the PF level */
6669 mutex_lock(&pf->switch_mutex);
6670
6671 /* VSI list may be fragmented if VSI creation/destruction has
6672 * been happening. We can afford to do a quick scan to look
6673 * for any free VSIs in the list.
6674 *
6675 * find next empty vsi slot, looping back around if necessary
6676 */
6677 i = pf->next_vsi;
6678 while (i < pf->num_alloc_vsi && pf->vsi[i])
6679 i++;
6680 if (i >= pf->num_alloc_vsi) {
6681 i = 0;
6682 while (i < pf->next_vsi && pf->vsi[i])
6683 i++;
6684 }
6685
6686 if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6687 vsi_idx = i; /* Found one! */
6688 } else {
6689 ret = -ENODEV;
6690 goto unlock_pf; /* out of VSI slots! */
6691 }
6692 pf->next_vsi = ++i;
6693
6694 vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6695 if (!vsi) {
6696 ret = -ENOMEM;
6697 goto unlock_pf;
6698 }
6699 vsi->type = type;
6700 vsi->back = pf;
6701 set_bit(__I40E_DOWN, &vsi->state);
6702 vsi->flags = 0;
6703 vsi->idx = vsi_idx;
6704 vsi->rx_itr_setting = pf->rx_itr_default;
6705 vsi->tx_itr_setting = pf->tx_itr_default;
6706 vsi->netdev_registered = false;
6707 vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6708 INIT_LIST_HEAD(&vsi->mac_filter_list);
6709 vsi->irqs_ready = false;
6710
6711 ret = i40e_set_num_rings_in_vsi(vsi);
6712 if (ret)
6713 goto err_rings;
6714
6715 ret = i40e_vsi_alloc_arrays(vsi, true);
6716 if (ret)
6717 goto err_rings;
6718
6719 /* Setup default MSIX irq handler for VSI */
6720 i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6721
6722 pf->vsi[vsi_idx] = vsi;
6723 ret = vsi_idx;
6724 goto unlock_pf;
6725
6726 err_rings:
6727 pf->next_vsi = i - 1;
6728 kfree(vsi);
6729 unlock_pf:
6730 mutex_unlock(&pf->switch_mutex);
6731 return ret;
6732 }
6733
6734 /**
6735 * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6736 * @type: VSI pointer
6737 * @free_qvectors: a bool to specify if q_vectors need to be freed.
6738 *
6739 * On error: returns error code (negative)
6740 * On success: returns 0
6741 **/
6742 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6743 {
6744 /* free the ring and vector containers */
6745 if (free_qvectors) {
6746 kfree(vsi->q_vectors);
6747 vsi->q_vectors = NULL;
6748 }
6749 kfree(vsi->tx_rings);
6750 vsi->tx_rings = NULL;
6751 vsi->rx_rings = NULL;
6752 }
6753
6754 /**
6755 * i40e_vsi_clear - Deallocate the VSI provided
6756 * @vsi: the VSI being un-configured
6757 **/
6758 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6759 {
6760 struct i40e_pf *pf;
6761
6762 if (!vsi)
6763 return 0;
6764
6765 if (!vsi->back)
6766 goto free_vsi;
6767 pf = vsi->back;
6768
6769 mutex_lock(&pf->switch_mutex);
6770 if (!pf->vsi[vsi->idx]) {
6771 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6772 vsi->idx, vsi->idx, vsi, vsi->type);
6773 goto unlock_vsi;
6774 }
6775
6776 if (pf->vsi[vsi->idx] != vsi) {
6777 dev_err(&pf->pdev->dev,
6778 "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6779 pf->vsi[vsi->idx]->idx,
6780 pf->vsi[vsi->idx],
6781 pf->vsi[vsi->idx]->type,
6782 vsi->idx, vsi, vsi->type);
6783 goto unlock_vsi;
6784 }
6785
6786 /* updates the pf for this cleared vsi */
6787 i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6788 i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6789
6790 i40e_vsi_free_arrays(vsi, true);
6791
6792 pf->vsi[vsi->idx] = NULL;
6793 if (vsi->idx < pf->next_vsi)
6794 pf->next_vsi = vsi->idx;
6795
6796 unlock_vsi:
6797 mutex_unlock(&pf->switch_mutex);
6798 free_vsi:
6799 kfree(vsi);
6800
6801 return 0;
6802 }
6803
6804 /**
6805 * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6806 * @vsi: the VSI being cleaned
6807 **/
6808 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6809 {
6810 int i;
6811
6812 if (vsi->tx_rings && vsi->tx_rings[0]) {
6813 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6814 kfree_rcu(vsi->tx_rings[i], rcu);
6815 vsi->tx_rings[i] = NULL;
6816 vsi->rx_rings[i] = NULL;
6817 }
6818 }
6819 }
6820
6821 /**
6822 * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6823 * @vsi: the VSI being configured
6824 **/
6825 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6826 {
6827 struct i40e_ring *tx_ring, *rx_ring;
6828 struct i40e_pf *pf = vsi->back;
6829 int i;
6830
6831 /* Set basic values in the rings to be used later during open() */
6832 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6833 /* allocate space for both Tx and Rx in one shot */
6834 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6835 if (!tx_ring)
6836 goto err_out;
6837
6838 tx_ring->queue_index = i;
6839 tx_ring->reg_idx = vsi->base_queue + i;
6840 tx_ring->ring_active = false;
6841 tx_ring->vsi = vsi;
6842 tx_ring->netdev = vsi->netdev;
6843 tx_ring->dev = &pf->pdev->dev;
6844 tx_ring->count = vsi->num_desc;
6845 tx_ring->size = 0;
6846 tx_ring->dcb_tc = 0;
6847 vsi->tx_rings[i] = tx_ring;
6848
6849 rx_ring = &tx_ring[1];
6850 rx_ring->queue_index = i;
6851 rx_ring->reg_idx = vsi->base_queue + i;
6852 rx_ring->ring_active = false;
6853 rx_ring->vsi = vsi;
6854 rx_ring->netdev = vsi->netdev;
6855 rx_ring->dev = &pf->pdev->dev;
6856 rx_ring->count = vsi->num_desc;
6857 rx_ring->size = 0;
6858 rx_ring->dcb_tc = 0;
6859 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6860 set_ring_16byte_desc_enabled(rx_ring);
6861 else
6862 clear_ring_16byte_desc_enabled(rx_ring);
6863 vsi->rx_rings[i] = rx_ring;
6864 }
6865
6866 return 0;
6867
6868 err_out:
6869 i40e_vsi_clear_rings(vsi);
6870 return -ENOMEM;
6871 }
6872
6873 /**
6874 * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6875 * @pf: board private structure
6876 * @vectors: the number of MSI-X vectors to request
6877 *
6878 * Returns the number of vectors reserved, or error
6879 **/
6880 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6881 {
6882 vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6883 I40E_MIN_MSIX, vectors);
6884 if (vectors < 0) {
6885 dev_info(&pf->pdev->dev,
6886 "MSI-X vector reservation failed: %d\n", vectors);
6887 vectors = 0;
6888 }
6889
6890 return vectors;
6891 }
6892
6893 /**
6894 * i40e_init_msix - Setup the MSIX capability
6895 * @pf: board private structure
6896 *
6897 * Work with the OS to set up the MSIX vectors needed.
6898 *
6899 * Returns 0 on success, negative on failure
6900 **/
6901 static int i40e_init_msix(struct i40e_pf *pf)
6902 {
6903 i40e_status err = 0;
6904 struct i40e_hw *hw = &pf->hw;
6905 int other_vecs = 0;
6906 int v_budget, i;
6907 int vec;
6908
6909 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6910 return -ENODEV;
6911
6912 /* The number of vectors we'll request will be comprised of:
6913 * - Add 1 for "other" cause for Admin Queue events, etc.
6914 * - The number of LAN queue pairs
6915 * - Queues being used for RSS.
6916 * We don't need as many as max_rss_size vectors.
6917 * use rss_size instead in the calculation since that
6918 * is governed by number of cpus in the system.
6919 * - assumes symmetric Tx/Rx pairing
6920 * - The number of VMDq pairs
6921 #ifdef I40E_FCOE
6922 * - The number of FCOE qps.
6923 #endif
6924 * Once we count this up, try the request.
6925 *
6926 * If we can't get what we want, we'll simplify to nearly nothing
6927 * and try again. If that still fails, we punt.
6928 */
6929 pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6930 pf->num_vmdq_msix = pf->num_vmdq_qps;
6931 other_vecs = 1;
6932 other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6933 if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6934 other_vecs++;
6935
6936 /* Scale down if necessary, and the rings will share vectors */
6937 pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6938 (hw->func_caps.num_msix_vectors - other_vecs));
6939 v_budget = pf->num_lan_msix + other_vecs;
6940
6941 #ifdef I40E_FCOE
6942 if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6943 pf->num_fcoe_msix = pf->num_fcoe_qps;
6944 v_budget += pf->num_fcoe_msix;
6945 }
6946 #endif
6947
6948 pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6949 GFP_KERNEL);
6950 if (!pf->msix_entries)
6951 return -ENOMEM;
6952
6953 for (i = 0; i < v_budget; i++)
6954 pf->msix_entries[i].entry = i;
6955 vec = i40e_reserve_msix_vectors(pf, v_budget);
6956
6957 if (vec != v_budget) {
6958 /* If we have limited resources, we will start with no vectors
6959 * for the special features and then allocate vectors to some
6960 * of these features based on the policy and at the end disable
6961 * the features that did not get any vectors.
6962 */
6963 #ifdef I40E_FCOE
6964 pf->num_fcoe_qps = 0;
6965 pf->num_fcoe_msix = 0;
6966 #endif
6967 pf->num_vmdq_msix = 0;
6968 }
6969
6970 if (vec < I40E_MIN_MSIX) {
6971 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6972 kfree(pf->msix_entries);
6973 pf->msix_entries = NULL;
6974 return -ENODEV;
6975
6976 } else if (vec == I40E_MIN_MSIX) {
6977 /* Adjust for minimal MSIX use */
6978 pf->num_vmdq_vsis = 0;
6979 pf->num_vmdq_qps = 0;
6980 pf->num_lan_qps = 1;
6981 pf->num_lan_msix = 1;
6982
6983 } else if (vec != v_budget) {
6984 /* reserve the misc vector */
6985 vec--;
6986
6987 /* Scale vector usage down */
6988 pf->num_vmdq_msix = 1; /* force VMDqs to only one vector */
6989 pf->num_vmdq_vsis = 1;
6990
6991 /* partition out the remaining vectors */
6992 switch (vec) {
6993 case 2:
6994 pf->num_lan_msix = 1;
6995 break;
6996 case 3:
6997 #ifdef I40E_FCOE
6998 /* give one vector to FCoE */
6999 if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7000 pf->num_lan_msix = 1;
7001 pf->num_fcoe_msix = 1;
7002 }
7003 #else
7004 pf->num_lan_msix = 2;
7005 #endif
7006 break;
7007 default:
7008 #ifdef I40E_FCOE
7009 /* give one vector to FCoE */
7010 if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7011 pf->num_fcoe_msix = 1;
7012 vec--;
7013 }
7014 #endif
7015 pf->num_lan_msix = min_t(int, (vec / 2),
7016 pf->num_lan_qps);
7017 pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
7018 I40E_DEFAULT_NUM_VMDQ_VSI);
7019 break;
7020 }
7021 }
7022
7023 if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7024 (pf->num_vmdq_msix == 0)) {
7025 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7026 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7027 }
7028 #ifdef I40E_FCOE
7029
7030 if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7031 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7032 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7033 }
7034 #endif
7035 return err;
7036 }
7037
7038 /**
7039 * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7040 * @vsi: the VSI being configured
7041 * @v_idx: index of the vector in the vsi struct
7042 *
7043 * We allocate one q_vector. If allocation fails we return -ENOMEM.
7044 **/
7045 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7046 {
7047 struct i40e_q_vector *q_vector;
7048
7049 /* allocate q_vector */
7050 q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7051 if (!q_vector)
7052 return -ENOMEM;
7053
7054 q_vector->vsi = vsi;
7055 q_vector->v_idx = v_idx;
7056 cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7057 if (vsi->netdev)
7058 netif_napi_add(vsi->netdev, &q_vector->napi,
7059 i40e_napi_poll, NAPI_POLL_WEIGHT);
7060
7061 q_vector->rx.latency_range = I40E_LOW_LATENCY;
7062 q_vector->tx.latency_range = I40E_LOW_LATENCY;
7063
7064 /* tie q_vector and vsi together */
7065 vsi->q_vectors[v_idx] = q_vector;
7066
7067 return 0;
7068 }
7069
7070 /**
7071 * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7072 * @vsi: the VSI being configured
7073 *
7074 * We allocate one q_vector per queue interrupt. If allocation fails we
7075 * return -ENOMEM.
7076 **/
7077 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7078 {
7079 struct i40e_pf *pf = vsi->back;
7080 int v_idx, num_q_vectors;
7081 int err;
7082
7083 /* if not MSIX, give the one vector only to the LAN VSI */
7084 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7085 num_q_vectors = vsi->num_q_vectors;
7086 else if (vsi == pf->vsi[pf->lan_vsi])
7087 num_q_vectors = 1;
7088 else
7089 return -EINVAL;
7090
7091 for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7092 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7093 if (err)
7094 goto err_out;
7095 }
7096
7097 return 0;
7098
7099 err_out:
7100 while (v_idx--)
7101 i40e_free_q_vector(vsi, v_idx);
7102
7103 return err;
7104 }
7105
7106 /**
7107 * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7108 * @pf: board private structure to initialize
7109 **/
7110 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7111 {
7112 int err = 0;
7113
7114 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7115 err = i40e_init_msix(pf);
7116 if (err) {
7117 pf->flags &= ~(I40E_FLAG_MSIX_ENABLED |
7118 #ifdef I40E_FCOE
7119 I40E_FLAG_FCOE_ENABLED |
7120 #endif
7121 I40E_FLAG_RSS_ENABLED |
7122 I40E_FLAG_DCB_CAPABLE |
7123 I40E_FLAG_SRIOV_ENABLED |
7124 I40E_FLAG_FD_SB_ENABLED |
7125 I40E_FLAG_FD_ATR_ENABLED |
7126 I40E_FLAG_VMDQ_ENABLED);
7127
7128 /* rework the queue expectations without MSIX */
7129 i40e_determine_queue_usage(pf);
7130 }
7131 }
7132
7133 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7134 (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7135 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7136 err = pci_enable_msi(pf->pdev);
7137 if (err) {
7138 dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7139 pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7140 }
7141 }
7142
7143 if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7144 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7145
7146 /* track first vector for misc interrupts */
7147 err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7148 }
7149
7150 /**
7151 * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7152 * @pf: board private structure
7153 *
7154 * This sets up the handler for MSIX 0, which is used to manage the
7155 * non-queue interrupts, e.g. AdminQ and errors. This is not used
7156 * when in MSI or Legacy interrupt mode.
7157 **/
7158 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7159 {
7160 struct i40e_hw *hw = &pf->hw;
7161 int err = 0;
7162
7163 /* Only request the irq if this is the first time through, and
7164 * not when we're rebuilding after a Reset
7165 */
7166 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7167 err = request_irq(pf->msix_entries[0].vector,
7168 i40e_intr, 0, pf->int_name, pf);
7169 if (err) {
7170 dev_info(&pf->pdev->dev,
7171 "request_irq for %s failed: %d\n",
7172 pf->int_name, err);
7173 return -EFAULT;
7174 }
7175 }
7176
7177 i40e_enable_misc_int_causes(pf);
7178
7179 /* associate no queues to the misc vector */
7180 wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7181 wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7182
7183 i40e_flush(hw);
7184
7185 i40e_irq_dynamic_enable_icr0(pf);
7186
7187 return err;
7188 }
7189
7190 /**
7191 * i40e_config_rss - Prepare for RSS if used
7192 * @pf: board private structure
7193 **/
7194 static int i40e_config_rss(struct i40e_pf *pf)
7195 {
7196 u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7197 struct i40e_hw *hw = &pf->hw;
7198 u32 lut = 0;
7199 int i, j;
7200 u64 hena;
7201 u32 reg_val;
7202
7203 netdev_rss_key_fill(rss_key, sizeof(rss_key));
7204 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7205 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7206
7207 /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7208 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7209 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7210 hena |= I40E_DEFAULT_RSS_HENA;
7211 wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7212 wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7213
7214 /* Check capability and Set table size and register per hw expectation*/
7215 reg_val = rd32(hw, I40E_PFQF_CTL_0);
7216 if (hw->func_caps.rss_table_size == 512) {
7217 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7218 pf->rss_table_size = 512;
7219 } else {
7220 pf->rss_table_size = 128;
7221 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7222 }
7223 wr32(hw, I40E_PFQF_CTL_0, reg_val);
7224
7225 /* Populate the LUT with max no. of queues in round robin fashion */
7226 for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7227
7228 /* The assumption is that lan qp count will be the highest
7229 * qp count for any PF VSI that needs RSS.
7230 * If multiple VSIs need RSS support, all the qp counts
7231 * for those VSIs should be a power of 2 for RSS to work.
7232 * If LAN VSI is the only consumer for RSS then this requirement
7233 * is not necessary.
7234 */
7235 if (j == pf->rss_size)
7236 j = 0;
7237 /* lut = 4-byte sliding window of 4 lut entries */
7238 lut = (lut << 8) | (j &
7239 ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7240 /* On i = 3, we have 4 entries in lut; write to the register */
7241 if ((i & 3) == 3)
7242 wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7243 }
7244 i40e_flush(hw);
7245
7246 return 0;
7247 }
7248
7249 /**
7250 * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7251 * @pf: board private structure
7252 * @queue_count: the requested queue count for rss.
7253 *
7254 * returns 0 if rss is not enabled, if enabled returns the final rss queue
7255 * count which may be different from the requested queue count.
7256 **/
7257 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7258 {
7259 if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7260 return 0;
7261
7262 queue_count = min_t(int, queue_count, pf->rss_size_max);
7263
7264 if (queue_count != pf->rss_size) {
7265 i40e_prep_for_reset(pf);
7266
7267 pf->rss_size = queue_count;
7268
7269 i40e_reset_and_rebuild(pf, true);
7270 i40e_config_rss(pf);
7271 }
7272 dev_info(&pf->pdev->dev, "RSS count: %d\n", pf->rss_size);
7273 return pf->rss_size;
7274 }
7275
7276 /**
7277 * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7278 * @pf: board private structure to initialize
7279 *
7280 * i40e_sw_init initializes the Adapter private data structure.
7281 * Fields are initialized based on PCI device information and
7282 * OS network device settings (MTU size).
7283 **/
7284 static int i40e_sw_init(struct i40e_pf *pf)
7285 {
7286 int err = 0;
7287 int size;
7288
7289 pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7290 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7291 pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7292 if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7293 if (I40E_DEBUG_USER & debug)
7294 pf->hw.debug_mask = debug;
7295 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7296 I40E_DEFAULT_MSG_ENABLE);
7297 }
7298
7299 /* Set default capability flags */
7300 pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7301 I40E_FLAG_MSI_ENABLED |
7302 I40E_FLAG_MSIX_ENABLED |
7303 I40E_FLAG_RX_1BUF_ENABLED;
7304
7305 /* Set default ITR */
7306 pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7307 pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7308
7309 /* Depending on PF configurations, it is possible that the RSS
7310 * maximum might end up larger than the available queues
7311 */
7312 pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7313 pf->rss_size = 1;
7314 pf->rss_size_max = min_t(int, pf->rss_size_max,
7315 pf->hw.func_caps.num_tx_qp);
7316 if (pf->hw.func_caps.rss) {
7317 pf->flags |= I40E_FLAG_RSS_ENABLED;
7318 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7319 }
7320
7321 /* MFP mode enabled */
7322 if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7323 pf->flags |= I40E_FLAG_MFP_ENABLED;
7324 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7325 }
7326
7327 /* FW/NVM is not yet fixed in this regard */
7328 if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7329 (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7330 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7331 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7332 /* Setup a counter for fd_atr per pf */
7333 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7334 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7335 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7336 /* Setup a counter for fd_sb per pf */
7337 pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7338 } else {
7339 dev_info(&pf->pdev->dev,
7340 "Flow Director Sideband mode Disabled in MFP mode\n");
7341 }
7342 pf->fdir_pf_filter_count =
7343 pf->hw.func_caps.fd_filters_guaranteed;
7344 pf->hw.fdir_shared_filter_count =
7345 pf->hw.func_caps.fd_filters_best_effort;
7346 }
7347
7348 if (pf->hw.func_caps.vmdq) {
7349 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7350 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7351 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7352 }
7353
7354 #ifdef I40E_FCOE
7355 err = i40e_init_pf_fcoe(pf);
7356 if (err)
7357 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7358
7359 #endif /* I40E_FCOE */
7360 #ifdef CONFIG_PCI_IOV
7361 if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7362 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7363 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7364 pf->num_req_vfs = min_t(int,
7365 pf->hw.func_caps.num_vfs,
7366 I40E_MAX_VF_COUNT);
7367 }
7368 #endif /* CONFIG_PCI_IOV */
7369 pf->eeprom_version = 0xDEAD;
7370 pf->lan_veb = I40E_NO_VEB;
7371 pf->lan_vsi = I40E_NO_VSI;
7372
7373 /* set up queue assignment tracking */
7374 size = sizeof(struct i40e_lump_tracking)
7375 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7376 pf->qp_pile = kzalloc(size, GFP_KERNEL);
7377 if (!pf->qp_pile) {
7378 err = -ENOMEM;
7379 goto sw_init_done;
7380 }
7381 pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7382 pf->qp_pile->search_hint = 0;
7383
7384 /* set up vector assignment tracking */
7385 size = sizeof(struct i40e_lump_tracking)
7386 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7387 pf->irq_pile = kzalloc(size, GFP_KERNEL);
7388 if (!pf->irq_pile) {
7389 kfree(pf->qp_pile);
7390 err = -ENOMEM;
7391 goto sw_init_done;
7392 }
7393 pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7394 pf->irq_pile->search_hint = 0;
7395
7396 pf->tx_timeout_recovery_level = 1;
7397
7398 mutex_init(&pf->switch_mutex);
7399
7400 sw_init_done:
7401 return err;
7402 }
7403
7404 /**
7405 * i40e_set_ntuple - set the ntuple feature flag and take action
7406 * @pf: board private structure to initialize
7407 * @features: the feature set that the stack is suggesting
7408 *
7409 * returns a bool to indicate if reset needs to happen
7410 **/
7411 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7412 {
7413 bool need_reset = false;
7414
7415 /* Check if Flow Director n-tuple support was enabled or disabled. If
7416 * the state changed, we need to reset.
7417 */
7418 if (features & NETIF_F_NTUPLE) {
7419 /* Enable filters and mark for reset */
7420 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7421 need_reset = true;
7422 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7423 } else {
7424 /* turn off filters, mark for reset and clear SW filter list */
7425 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7426 need_reset = true;
7427 i40e_fdir_filter_exit(pf);
7428 }
7429 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7430 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7431 /* reset fd counters */
7432 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7433 pf->fdir_pf_active_filters = 0;
7434 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7435 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7436 /* if ATR was auto disabled it can be re-enabled. */
7437 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7438 (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7439 pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7440 }
7441 return need_reset;
7442 }
7443
7444 /**
7445 * i40e_set_features - set the netdev feature flags
7446 * @netdev: ptr to the netdev being adjusted
7447 * @features: the feature set that the stack is suggesting
7448 **/
7449 static int i40e_set_features(struct net_device *netdev,
7450 netdev_features_t features)
7451 {
7452 struct i40e_netdev_priv *np = netdev_priv(netdev);
7453 struct i40e_vsi *vsi = np->vsi;
7454 struct i40e_pf *pf = vsi->back;
7455 bool need_reset;
7456
7457 if (features & NETIF_F_HW_VLAN_CTAG_RX)
7458 i40e_vlan_stripping_enable(vsi);
7459 else
7460 i40e_vlan_stripping_disable(vsi);
7461
7462 need_reset = i40e_set_ntuple(pf, features);
7463
7464 if (need_reset)
7465 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7466
7467 return 0;
7468 }
7469
7470 #ifdef CONFIG_I40E_VXLAN
7471 /**
7472 * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7473 * @pf: board private structure
7474 * @port: The UDP port to look up
7475 *
7476 * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7477 **/
7478 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7479 {
7480 u8 i;
7481
7482 for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7483 if (pf->vxlan_ports[i] == port)
7484 return i;
7485 }
7486
7487 return i;
7488 }
7489
7490 /**
7491 * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7492 * @netdev: This physical port's netdev
7493 * @sa_family: Socket Family that VXLAN is notifying us about
7494 * @port: New UDP port number that VXLAN started listening to
7495 **/
7496 static void i40e_add_vxlan_port(struct net_device *netdev,
7497 sa_family_t sa_family, __be16 port)
7498 {
7499 struct i40e_netdev_priv *np = netdev_priv(netdev);
7500 struct i40e_vsi *vsi = np->vsi;
7501 struct i40e_pf *pf = vsi->back;
7502 u8 next_idx;
7503 u8 idx;
7504
7505 if (sa_family == AF_INET6)
7506 return;
7507
7508 idx = i40e_get_vxlan_port_idx(pf, port);
7509
7510 /* Check if port already exists */
7511 if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7512 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7513 return;
7514 }
7515
7516 /* Now check if there is space to add the new port */
7517 next_idx = i40e_get_vxlan_port_idx(pf, 0);
7518
7519 if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7520 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7521 ntohs(port));
7522 return;
7523 }
7524
7525 /* New port: add it and mark its index in the bitmap */
7526 pf->vxlan_ports[next_idx] = port;
7527 pf->pending_vxlan_bitmap |= (1 << next_idx);
7528
7529 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7530 }
7531
7532 /**
7533 * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7534 * @netdev: This physical port's netdev
7535 * @sa_family: Socket Family that VXLAN is notifying us about
7536 * @port: UDP port number that VXLAN stopped listening to
7537 **/
7538 static void i40e_del_vxlan_port(struct net_device *netdev,
7539 sa_family_t sa_family, __be16 port)
7540 {
7541 struct i40e_netdev_priv *np = netdev_priv(netdev);
7542 struct i40e_vsi *vsi = np->vsi;
7543 struct i40e_pf *pf = vsi->back;
7544 u8 idx;
7545
7546 if (sa_family == AF_INET6)
7547 return;
7548
7549 idx = i40e_get_vxlan_port_idx(pf, port);
7550
7551 /* Check if port already exists */
7552 if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7553 /* if port exists, set it to 0 (mark for deletion)
7554 * and make it pending
7555 */
7556 pf->vxlan_ports[idx] = 0;
7557
7558 pf->pending_vxlan_bitmap |= (1 << idx);
7559
7560 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7561 } else {
7562 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7563 ntohs(port));
7564 }
7565 }
7566
7567 #endif
7568 static int i40e_get_phys_port_id(struct net_device *netdev,
7569 struct netdev_phys_item_id *ppid)
7570 {
7571 struct i40e_netdev_priv *np = netdev_priv(netdev);
7572 struct i40e_pf *pf = np->vsi->back;
7573 struct i40e_hw *hw = &pf->hw;
7574
7575 if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7576 return -EOPNOTSUPP;
7577
7578 ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7579 memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7580
7581 return 0;
7582 }
7583
7584 /**
7585 * i40e_ndo_fdb_add - add an entry to the hardware database
7586 * @ndm: the input from the stack
7587 * @tb: pointer to array of nladdr (unused)
7588 * @dev: the net device pointer
7589 * @addr: the MAC address entry being added
7590 * @flags: instructions from stack about fdb operation
7591 */
7592 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7593 struct net_device *dev,
7594 const unsigned char *addr, u16 vid,
7595 u16 flags)
7596 {
7597 struct i40e_netdev_priv *np = netdev_priv(dev);
7598 struct i40e_pf *pf = np->vsi->back;
7599 int err = 0;
7600
7601 if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7602 return -EOPNOTSUPP;
7603
7604 if (vid) {
7605 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7606 return -EINVAL;
7607 }
7608
7609 /* Hardware does not support aging addresses so if a
7610 * ndm_state is given only allow permanent addresses
7611 */
7612 if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7613 netdev_info(dev, "FDB only supports static addresses\n");
7614 return -EINVAL;
7615 }
7616
7617 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7618 err = dev_uc_add_excl(dev, addr);
7619 else if (is_multicast_ether_addr(addr))
7620 err = dev_mc_add_excl(dev, addr);
7621 else
7622 err = -EINVAL;
7623
7624 /* Only return duplicate errors if NLM_F_EXCL is set */
7625 if (err == -EEXIST && !(flags & NLM_F_EXCL))
7626 err = 0;
7627
7628 return err;
7629 }
7630
7631 static const struct net_device_ops i40e_netdev_ops = {
7632 .ndo_open = i40e_open,
7633 .ndo_stop = i40e_close,
7634 .ndo_start_xmit = i40e_lan_xmit_frame,
7635 .ndo_get_stats64 = i40e_get_netdev_stats_struct,
7636 .ndo_set_rx_mode = i40e_set_rx_mode,
7637 .ndo_validate_addr = eth_validate_addr,
7638 .ndo_set_mac_address = i40e_set_mac,
7639 .ndo_change_mtu = i40e_change_mtu,
7640 .ndo_do_ioctl = i40e_ioctl,
7641 .ndo_tx_timeout = i40e_tx_timeout,
7642 .ndo_vlan_rx_add_vid = i40e_vlan_rx_add_vid,
7643 .ndo_vlan_rx_kill_vid = i40e_vlan_rx_kill_vid,
7644 #ifdef CONFIG_NET_POLL_CONTROLLER
7645 .ndo_poll_controller = i40e_netpoll,
7646 #endif
7647 .ndo_setup_tc = i40e_setup_tc,
7648 #ifdef I40E_FCOE
7649 .ndo_fcoe_enable = i40e_fcoe_enable,
7650 .ndo_fcoe_disable = i40e_fcoe_disable,
7651 #endif
7652 .ndo_set_features = i40e_set_features,
7653 .ndo_set_vf_mac = i40e_ndo_set_vf_mac,
7654 .ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan,
7655 .ndo_set_vf_rate = i40e_ndo_set_vf_bw,
7656 .ndo_get_vf_config = i40e_ndo_get_vf_config,
7657 .ndo_set_vf_link_state = i40e_ndo_set_vf_link_state,
7658 .ndo_set_vf_spoofchk = i40e_ndo_set_vf_spoofchk,
7659 #ifdef CONFIG_I40E_VXLAN
7660 .ndo_add_vxlan_port = i40e_add_vxlan_port,
7661 .ndo_del_vxlan_port = i40e_del_vxlan_port,
7662 #endif
7663 .ndo_get_phys_port_id = i40e_get_phys_port_id,
7664 .ndo_fdb_add = i40e_ndo_fdb_add,
7665 };
7666
7667 /**
7668 * i40e_config_netdev - Setup the netdev flags
7669 * @vsi: the VSI being configured
7670 *
7671 * Returns 0 on success, negative value on failure
7672 **/
7673 static int i40e_config_netdev(struct i40e_vsi *vsi)
7674 {
7675 u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7676 struct i40e_pf *pf = vsi->back;
7677 struct i40e_hw *hw = &pf->hw;
7678 struct i40e_netdev_priv *np;
7679 struct net_device *netdev;
7680 u8 mac_addr[ETH_ALEN];
7681 int etherdev_size;
7682
7683 etherdev_size = sizeof(struct i40e_netdev_priv);
7684 netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7685 if (!netdev)
7686 return -ENOMEM;
7687
7688 vsi->netdev = netdev;
7689 np = netdev_priv(netdev);
7690 np->vsi = vsi;
7691
7692 netdev->hw_enc_features |= NETIF_F_IP_CSUM |
7693 NETIF_F_GSO_UDP_TUNNEL |
7694 NETIF_F_TSO;
7695
7696 netdev->features = NETIF_F_SG |
7697 NETIF_F_IP_CSUM |
7698 NETIF_F_SCTP_CSUM |
7699 NETIF_F_HIGHDMA |
7700 NETIF_F_GSO_UDP_TUNNEL |
7701 NETIF_F_HW_VLAN_CTAG_TX |
7702 NETIF_F_HW_VLAN_CTAG_RX |
7703 NETIF_F_HW_VLAN_CTAG_FILTER |
7704 NETIF_F_IPV6_CSUM |
7705 NETIF_F_TSO |
7706 NETIF_F_TSO_ECN |
7707 NETIF_F_TSO6 |
7708 NETIF_F_RXCSUM |
7709 NETIF_F_RXHASH |
7710 0;
7711
7712 if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7713 netdev->features |= NETIF_F_NTUPLE;
7714
7715 /* copy netdev features into list of user selectable features */
7716 netdev->hw_features |= netdev->features;
7717
7718 if (vsi->type == I40E_VSI_MAIN) {
7719 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7720 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7721 /* The following steps are necessary to prevent reception
7722 * of tagged packets - some older NVM configurations load a
7723 * default a MAC-VLAN filter that accepts any tagged packet
7724 * which must be replaced by a normal filter.
7725 */
7726 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7727 i40e_add_filter(vsi, mac_addr,
7728 I40E_VLAN_ANY, false, true);
7729 } else {
7730 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7731 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7732 pf->vsi[pf->lan_vsi]->netdev->name);
7733 random_ether_addr(mac_addr);
7734 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7735 }
7736 i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7737
7738 ether_addr_copy(netdev->dev_addr, mac_addr);
7739 ether_addr_copy(netdev->perm_addr, mac_addr);
7740 /* vlan gets same features (except vlan offload)
7741 * after any tweaks for specific VSI types
7742 */
7743 netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7744 NETIF_F_HW_VLAN_CTAG_RX |
7745 NETIF_F_HW_VLAN_CTAG_FILTER);
7746 netdev->priv_flags |= IFF_UNICAST_FLT;
7747 netdev->priv_flags |= IFF_SUPP_NOFCS;
7748 /* Setup netdev TC information */
7749 i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7750
7751 netdev->netdev_ops = &i40e_netdev_ops;
7752 netdev->watchdog_timeo = 5 * HZ;
7753 i40e_set_ethtool_ops(netdev);
7754 #ifdef I40E_FCOE
7755 i40e_fcoe_config_netdev(netdev, vsi);
7756 #endif
7757
7758 return 0;
7759 }
7760
7761 /**
7762 * i40e_vsi_delete - Delete a VSI from the switch
7763 * @vsi: the VSI being removed
7764 *
7765 * Returns 0 on success, negative value on failure
7766 **/
7767 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7768 {
7769 /* remove default VSI is not allowed */
7770 if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7771 return;
7772
7773 i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7774 }
7775
7776 /**
7777 * i40e_add_vsi - Add a VSI to the switch
7778 * @vsi: the VSI being configured
7779 *
7780 * This initializes a VSI context depending on the VSI type to be added and
7781 * passes it down to the add_vsi aq command.
7782 **/
7783 static int i40e_add_vsi(struct i40e_vsi *vsi)
7784 {
7785 int ret = -ENODEV;
7786 struct i40e_mac_filter *f, *ftmp;
7787 struct i40e_pf *pf = vsi->back;
7788 struct i40e_hw *hw = &pf->hw;
7789 struct i40e_vsi_context ctxt;
7790 u8 enabled_tc = 0x1; /* TC0 enabled */
7791 int f_count = 0;
7792
7793 memset(&ctxt, 0, sizeof(ctxt));
7794 switch (vsi->type) {
7795 case I40E_VSI_MAIN:
7796 /* The PF's main VSI is already setup as part of the
7797 * device initialization, so we'll not bother with
7798 * the add_vsi call, but we will retrieve the current
7799 * VSI context.
7800 */
7801 ctxt.seid = pf->main_vsi_seid;
7802 ctxt.pf_num = pf->hw.pf_id;
7803 ctxt.vf_num = 0;
7804 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7805 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7806 if (ret) {
7807 dev_info(&pf->pdev->dev,
7808 "couldn't get pf vsi config, err %d, aq_err %d\n",
7809 ret, pf->hw.aq.asq_last_status);
7810 return -ENOENT;
7811 }
7812 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7813 vsi->info.valid_sections = 0;
7814
7815 vsi->seid = ctxt.seid;
7816 vsi->id = ctxt.vsi_number;
7817
7818 enabled_tc = i40e_pf_get_tc_map(pf);
7819
7820 /* MFP mode setup queue map and update VSI */
7821 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
7822 !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
7823 memset(&ctxt, 0, sizeof(ctxt));
7824 ctxt.seid = pf->main_vsi_seid;
7825 ctxt.pf_num = pf->hw.pf_id;
7826 ctxt.vf_num = 0;
7827 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7828 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7829 if (ret) {
7830 dev_info(&pf->pdev->dev,
7831 "update vsi failed, aq_err=%d\n",
7832 pf->hw.aq.asq_last_status);
7833 ret = -ENOENT;
7834 goto err;
7835 }
7836 /* update the local VSI info queue map */
7837 i40e_vsi_update_queue_map(vsi, &ctxt);
7838 vsi->info.valid_sections = 0;
7839 } else {
7840 /* Default/Main VSI is only enabled for TC0
7841 * reconfigure it to enable all TCs that are
7842 * available on the port in SFP mode.
7843 * For MFP case the iSCSI PF would use this
7844 * flow to enable LAN+iSCSI TC.
7845 */
7846 ret = i40e_vsi_config_tc(vsi, enabled_tc);
7847 if (ret) {
7848 dev_info(&pf->pdev->dev,
7849 "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7850 enabled_tc, ret,
7851 pf->hw.aq.asq_last_status);
7852 ret = -ENOENT;
7853 }
7854 }
7855 break;
7856
7857 case I40E_VSI_FDIR:
7858 ctxt.pf_num = hw->pf_id;
7859 ctxt.vf_num = 0;
7860 ctxt.uplink_seid = vsi->uplink_seid;
7861 ctxt.connection_type = 0x1; /* regular data port */
7862 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7863 ctxt.info.valid_sections |=
7864 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7865 ctxt.info.switch_id =
7866 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7867 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7868 break;
7869
7870 case I40E_VSI_VMDQ2:
7871 ctxt.pf_num = hw->pf_id;
7872 ctxt.vf_num = 0;
7873 ctxt.uplink_seid = vsi->uplink_seid;
7874 ctxt.connection_type = 0x1; /* regular data port */
7875 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7876
7877 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7878
7879 /* This VSI is connected to VEB so the switch_id
7880 * should be set to zero by default.
7881 */
7882 ctxt.info.switch_id = 0;
7883 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7884
7885 /* Setup the VSI tx/rx queue map for TC0 only for now */
7886 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7887 break;
7888
7889 case I40E_VSI_SRIOV:
7890 ctxt.pf_num = hw->pf_id;
7891 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7892 ctxt.uplink_seid = vsi->uplink_seid;
7893 ctxt.connection_type = 0x1; /* regular data port */
7894 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7895
7896 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7897
7898 /* This VSI is connected to VEB so the switch_id
7899 * should be set to zero by default.
7900 */
7901 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7902
7903 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7904 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7905 if (pf->vf[vsi->vf_id].spoofchk) {
7906 ctxt.info.valid_sections |=
7907 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7908 ctxt.info.sec_flags |=
7909 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7910 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7911 }
7912 /* Setup the VSI tx/rx queue map for TC0 only for now */
7913 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7914 break;
7915
7916 #ifdef I40E_FCOE
7917 case I40E_VSI_FCOE:
7918 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7919 if (ret) {
7920 dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7921 return ret;
7922 }
7923 break;
7924
7925 #endif /* I40E_FCOE */
7926 default:
7927 return -ENODEV;
7928 }
7929
7930 if (vsi->type != I40E_VSI_MAIN) {
7931 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7932 if (ret) {
7933 dev_info(&vsi->back->pdev->dev,
7934 "add vsi failed, aq_err=%d\n",
7935 vsi->back->hw.aq.asq_last_status);
7936 ret = -ENOENT;
7937 goto err;
7938 }
7939 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7940 vsi->info.valid_sections = 0;
7941 vsi->seid = ctxt.seid;
7942 vsi->id = ctxt.vsi_number;
7943 }
7944
7945 /* If macvlan filters already exist, force them to get loaded */
7946 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7947 f->changed = true;
7948 f_count++;
7949
7950 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7951 struct i40e_aqc_remove_macvlan_element_data element;
7952
7953 memset(&element, 0, sizeof(element));
7954 ether_addr_copy(element.mac_addr, f->macaddr);
7955 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7956 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7957 &element, 1, NULL);
7958 if (ret) {
7959 /* some older FW has a different default */
7960 element.flags |=
7961 I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7962 i40e_aq_remove_macvlan(hw, vsi->seid,
7963 &element, 1, NULL);
7964 }
7965
7966 i40e_aq_mac_address_write(hw,
7967 I40E_AQC_WRITE_TYPE_LAA_WOL,
7968 f->macaddr, NULL);
7969 }
7970 }
7971 if (f_count) {
7972 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7973 pf->flags |= I40E_FLAG_FILTER_SYNC;
7974 }
7975
7976 /* Update VSI BW information */
7977 ret = i40e_vsi_get_bw_info(vsi);
7978 if (ret) {
7979 dev_info(&pf->pdev->dev,
7980 "couldn't get vsi bw info, err %d, aq_err %d\n",
7981 ret, pf->hw.aq.asq_last_status);
7982 /* VSI is already added so not tearing that up */
7983 ret = 0;
7984 }
7985
7986 err:
7987 return ret;
7988 }
7989
7990 /**
7991 * i40e_vsi_release - Delete a VSI and free its resources
7992 * @vsi: the VSI being removed
7993 *
7994 * Returns 0 on success or < 0 on error
7995 **/
7996 int i40e_vsi_release(struct i40e_vsi *vsi)
7997 {
7998 struct i40e_mac_filter *f, *ftmp;
7999 struct i40e_veb *veb = NULL;
8000 struct i40e_pf *pf;
8001 u16 uplink_seid;
8002 int i, n;
8003
8004 pf = vsi->back;
8005
8006 /* release of a VEB-owner or last VSI is not allowed */
8007 if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8008 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8009 vsi->seid, vsi->uplink_seid);
8010 return -ENODEV;
8011 }
8012 if (vsi == pf->vsi[pf->lan_vsi] &&
8013 !test_bit(__I40E_DOWN, &pf->state)) {
8014 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8015 return -ENODEV;
8016 }
8017
8018 uplink_seid = vsi->uplink_seid;
8019 if (vsi->type != I40E_VSI_SRIOV) {
8020 if (vsi->netdev_registered) {
8021 vsi->netdev_registered = false;
8022 if (vsi->netdev) {
8023 /* results in a call to i40e_close() */
8024 unregister_netdev(vsi->netdev);
8025 }
8026 } else {
8027 i40e_vsi_close(vsi);
8028 }
8029 i40e_vsi_disable_irq(vsi);
8030 }
8031
8032 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8033 i40e_del_filter(vsi, f->macaddr, f->vlan,
8034 f->is_vf, f->is_netdev);
8035 i40e_sync_vsi_filters(vsi);
8036
8037 i40e_vsi_delete(vsi);
8038 i40e_vsi_free_q_vectors(vsi);
8039 if (vsi->netdev) {
8040 free_netdev(vsi->netdev);
8041 vsi->netdev = NULL;
8042 }
8043 i40e_vsi_clear_rings(vsi);
8044 i40e_vsi_clear(vsi);
8045
8046 /* If this was the last thing on the VEB, except for the
8047 * controlling VSI, remove the VEB, which puts the controlling
8048 * VSI onto the next level down in the switch.
8049 *
8050 * Well, okay, there's one more exception here: don't remove
8051 * the orphan VEBs yet. We'll wait for an explicit remove request
8052 * from up the network stack.
8053 */
8054 for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8055 if (pf->vsi[i] &&
8056 pf->vsi[i]->uplink_seid == uplink_seid &&
8057 (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8058 n++; /* count the VSIs */
8059 }
8060 }
8061 for (i = 0; i < I40E_MAX_VEB; i++) {
8062 if (!pf->veb[i])
8063 continue;
8064 if (pf->veb[i]->uplink_seid == uplink_seid)
8065 n++; /* count the VEBs */
8066 if (pf->veb[i]->seid == uplink_seid)
8067 veb = pf->veb[i];
8068 }
8069 if (n == 0 && veb && veb->uplink_seid != 0)
8070 i40e_veb_release(veb);
8071
8072 return 0;
8073 }
8074
8075 /**
8076 * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8077 * @vsi: ptr to the VSI
8078 *
8079 * This should only be called after i40e_vsi_mem_alloc() which allocates the
8080 * corresponding SW VSI structure and initializes num_queue_pairs for the
8081 * newly allocated VSI.
8082 *
8083 * Returns 0 on success or negative on failure
8084 **/
8085 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8086 {
8087 int ret = -ENOENT;
8088 struct i40e_pf *pf = vsi->back;
8089
8090 if (vsi->q_vectors[0]) {
8091 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8092 vsi->seid);
8093 return -EEXIST;
8094 }
8095
8096 if (vsi->base_vector) {
8097 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8098 vsi->seid, vsi->base_vector);
8099 return -EEXIST;
8100 }
8101
8102 ret = i40e_vsi_alloc_q_vectors(vsi);
8103 if (ret) {
8104 dev_info(&pf->pdev->dev,
8105 "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8106 vsi->num_q_vectors, vsi->seid, ret);
8107 vsi->num_q_vectors = 0;
8108 goto vector_setup_out;
8109 }
8110
8111 if (vsi->num_q_vectors)
8112 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8113 vsi->num_q_vectors, vsi->idx);
8114 if (vsi->base_vector < 0) {
8115 dev_info(&pf->pdev->dev,
8116 "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8117 vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8118 i40e_vsi_free_q_vectors(vsi);
8119 ret = -ENOENT;
8120 goto vector_setup_out;
8121 }
8122
8123 vector_setup_out:
8124 return ret;
8125 }
8126
8127 /**
8128 * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8129 * @vsi: pointer to the vsi.
8130 *
8131 * This re-allocates a vsi's queue resources.
8132 *
8133 * Returns pointer to the successfully allocated and configured VSI sw struct
8134 * on success, otherwise returns NULL on failure.
8135 **/
8136 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8137 {
8138 struct i40e_pf *pf = vsi->back;
8139 u8 enabled_tc;
8140 int ret;
8141
8142 i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8143 i40e_vsi_clear_rings(vsi);
8144
8145 i40e_vsi_free_arrays(vsi, false);
8146 i40e_set_num_rings_in_vsi(vsi);
8147 ret = i40e_vsi_alloc_arrays(vsi, false);
8148 if (ret)
8149 goto err_vsi;
8150
8151 ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8152 if (ret < 0) {
8153 dev_info(&pf->pdev->dev,
8154 "failed to get tracking for %d queues for VSI %d err=%d\n",
8155 vsi->alloc_queue_pairs, vsi->seid, ret);
8156 goto err_vsi;
8157 }
8158 vsi->base_queue = ret;
8159
8160 /* Update the FW view of the VSI. Force a reset of TC and queue
8161 * layout configurations.
8162 */
8163 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8164 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8165 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8166 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8167
8168 /* assign it some queues */
8169 ret = i40e_alloc_rings(vsi);
8170 if (ret)
8171 goto err_rings;
8172
8173 /* map all of the rings to the q_vectors */
8174 i40e_vsi_map_rings_to_vectors(vsi);
8175 return vsi;
8176
8177 err_rings:
8178 i40e_vsi_free_q_vectors(vsi);
8179 if (vsi->netdev_registered) {
8180 vsi->netdev_registered = false;
8181 unregister_netdev(vsi->netdev);
8182 free_netdev(vsi->netdev);
8183 vsi->netdev = NULL;
8184 }
8185 i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8186 err_vsi:
8187 i40e_vsi_clear(vsi);
8188 return NULL;
8189 }
8190
8191 /**
8192 * i40e_vsi_setup - Set up a VSI by a given type
8193 * @pf: board private structure
8194 * @type: VSI type
8195 * @uplink_seid: the switch element to link to
8196 * @param1: usage depends upon VSI type. For VF types, indicates VF id
8197 *
8198 * This allocates the sw VSI structure and its queue resources, then add a VSI
8199 * to the identified VEB.
8200 *
8201 * Returns pointer to the successfully allocated and configure VSI sw struct on
8202 * success, otherwise returns NULL on failure.
8203 **/
8204 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8205 u16 uplink_seid, u32 param1)
8206 {
8207 struct i40e_vsi *vsi = NULL;
8208 struct i40e_veb *veb = NULL;
8209 int ret, i;
8210 int v_idx;
8211
8212 /* The requested uplink_seid must be either
8213 * - the PF's port seid
8214 * no VEB is needed because this is the PF
8215 * or this is a Flow Director special case VSI
8216 * - seid of an existing VEB
8217 * - seid of a VSI that owns an existing VEB
8218 * - seid of a VSI that doesn't own a VEB
8219 * a new VEB is created and the VSI becomes the owner
8220 * - seid of the PF VSI, which is what creates the first VEB
8221 * this is a special case of the previous
8222 *
8223 * Find which uplink_seid we were given and create a new VEB if needed
8224 */
8225 for (i = 0; i < I40E_MAX_VEB; i++) {
8226 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8227 veb = pf->veb[i];
8228 break;
8229 }
8230 }
8231
8232 if (!veb && uplink_seid != pf->mac_seid) {
8233
8234 for (i = 0; i < pf->num_alloc_vsi; i++) {
8235 if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8236 vsi = pf->vsi[i];
8237 break;
8238 }
8239 }
8240 if (!vsi) {
8241 dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8242 uplink_seid);
8243 return NULL;
8244 }
8245
8246 if (vsi->uplink_seid == pf->mac_seid)
8247 veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8248 vsi->tc_config.enabled_tc);
8249 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8250 veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8251 vsi->tc_config.enabled_tc);
8252 if (veb) {
8253 if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8254 dev_info(&vsi->back->pdev->dev,
8255 "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8256 __func__);
8257 return NULL;
8258 }
8259 i40e_enable_pf_switch_lb(pf);
8260 }
8261 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8262 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8263 veb = pf->veb[i];
8264 }
8265 if (!veb) {
8266 dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8267 return NULL;
8268 }
8269
8270 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8271 uplink_seid = veb->seid;
8272 }
8273
8274 /* get vsi sw struct */
8275 v_idx = i40e_vsi_mem_alloc(pf, type);
8276 if (v_idx < 0)
8277 goto err_alloc;
8278 vsi = pf->vsi[v_idx];
8279 if (!vsi)
8280 goto err_alloc;
8281 vsi->type = type;
8282 vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8283
8284 if (type == I40E_VSI_MAIN)
8285 pf->lan_vsi = v_idx;
8286 else if (type == I40E_VSI_SRIOV)
8287 vsi->vf_id = param1;
8288 /* assign it some queues */
8289 ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8290 vsi->idx);
8291 if (ret < 0) {
8292 dev_info(&pf->pdev->dev,
8293 "failed to get tracking for %d queues for VSI %d err=%d\n",
8294 vsi->alloc_queue_pairs, vsi->seid, ret);
8295 goto err_vsi;
8296 }
8297 vsi->base_queue = ret;
8298
8299 /* get a VSI from the hardware */
8300 vsi->uplink_seid = uplink_seid;
8301 ret = i40e_add_vsi(vsi);
8302 if (ret)
8303 goto err_vsi;
8304
8305 switch (vsi->type) {
8306 /* setup the netdev if needed */
8307 case I40E_VSI_MAIN:
8308 case I40E_VSI_VMDQ2:
8309 case I40E_VSI_FCOE:
8310 ret = i40e_config_netdev(vsi);
8311 if (ret)
8312 goto err_netdev;
8313 ret = register_netdev(vsi->netdev);
8314 if (ret)
8315 goto err_netdev;
8316 vsi->netdev_registered = true;
8317 netif_carrier_off(vsi->netdev);
8318 #ifdef CONFIG_I40E_DCB
8319 /* Setup DCB netlink interface */
8320 i40e_dcbnl_setup(vsi);
8321 #endif /* CONFIG_I40E_DCB */
8322 /* fall through */
8323
8324 case I40E_VSI_FDIR:
8325 /* set up vectors and rings if needed */
8326 ret = i40e_vsi_setup_vectors(vsi);
8327 if (ret)
8328 goto err_msix;
8329
8330 ret = i40e_alloc_rings(vsi);
8331 if (ret)
8332 goto err_rings;
8333
8334 /* map all of the rings to the q_vectors */
8335 i40e_vsi_map_rings_to_vectors(vsi);
8336
8337 i40e_vsi_reset_stats(vsi);
8338 break;
8339
8340 default:
8341 /* no netdev or rings for the other VSI types */
8342 break;
8343 }
8344
8345 return vsi;
8346
8347 err_rings:
8348 i40e_vsi_free_q_vectors(vsi);
8349 err_msix:
8350 if (vsi->netdev_registered) {
8351 vsi->netdev_registered = false;
8352 unregister_netdev(vsi->netdev);
8353 free_netdev(vsi->netdev);
8354 vsi->netdev = NULL;
8355 }
8356 err_netdev:
8357 i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8358 err_vsi:
8359 i40e_vsi_clear(vsi);
8360 err_alloc:
8361 return NULL;
8362 }
8363
8364 /**
8365 * i40e_veb_get_bw_info - Query VEB BW information
8366 * @veb: the veb to query
8367 *
8368 * Query the Tx scheduler BW configuration data for given VEB
8369 **/
8370 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8371 {
8372 struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8373 struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8374 struct i40e_pf *pf = veb->pf;
8375 struct i40e_hw *hw = &pf->hw;
8376 u32 tc_bw_max;
8377 int ret = 0;
8378 int i;
8379
8380 ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8381 &bw_data, NULL);
8382 if (ret) {
8383 dev_info(&pf->pdev->dev,
8384 "query veb bw config failed, aq_err=%d\n",
8385 hw->aq.asq_last_status);
8386 goto out;
8387 }
8388
8389 ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8390 &ets_data, NULL);
8391 if (ret) {
8392 dev_info(&pf->pdev->dev,
8393 "query veb bw ets config failed, aq_err=%d\n",
8394 hw->aq.asq_last_status);
8395 goto out;
8396 }
8397
8398 veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8399 veb->bw_max_quanta = ets_data.tc_bw_max;
8400 veb->is_abs_credits = bw_data.absolute_credits_enable;
8401 veb->enabled_tc = ets_data.tc_valid_bits;
8402 tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8403 (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8404 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8405 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8406 veb->bw_tc_limit_credits[i] =
8407 le16_to_cpu(bw_data.tc_bw_limits[i]);
8408 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8409 }
8410
8411 out:
8412 return ret;
8413 }
8414
8415 /**
8416 * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8417 * @pf: board private structure
8418 *
8419 * On error: returns error code (negative)
8420 * On success: returns vsi index in PF (positive)
8421 **/
8422 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8423 {
8424 int ret = -ENOENT;
8425 struct i40e_veb *veb;
8426 int i;
8427
8428 /* Need to protect the allocation of switch elements at the PF level */
8429 mutex_lock(&pf->switch_mutex);
8430
8431 /* VEB list may be fragmented if VEB creation/destruction has
8432 * been happening. We can afford to do a quick scan to look
8433 * for any free slots in the list.
8434 *
8435 * find next empty veb slot, looping back around if necessary
8436 */
8437 i = 0;
8438 while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8439 i++;
8440 if (i >= I40E_MAX_VEB) {
8441 ret = -ENOMEM;
8442 goto err_alloc_veb; /* out of VEB slots! */
8443 }
8444
8445 veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8446 if (!veb) {
8447 ret = -ENOMEM;
8448 goto err_alloc_veb;
8449 }
8450 veb->pf = pf;
8451 veb->idx = i;
8452 veb->enabled_tc = 1;
8453
8454 pf->veb[i] = veb;
8455 ret = i;
8456 err_alloc_veb:
8457 mutex_unlock(&pf->switch_mutex);
8458 return ret;
8459 }
8460
8461 /**
8462 * i40e_switch_branch_release - Delete a branch of the switch tree
8463 * @branch: where to start deleting
8464 *
8465 * This uses recursion to find the tips of the branch to be
8466 * removed, deleting until we get back to and can delete this VEB.
8467 **/
8468 static void i40e_switch_branch_release(struct i40e_veb *branch)
8469 {
8470 struct i40e_pf *pf = branch->pf;
8471 u16 branch_seid = branch->seid;
8472 u16 veb_idx = branch->idx;
8473 int i;
8474
8475 /* release any VEBs on this VEB - RECURSION */
8476 for (i = 0; i < I40E_MAX_VEB; i++) {
8477 if (!pf->veb[i])
8478 continue;
8479 if (pf->veb[i]->uplink_seid == branch->seid)
8480 i40e_switch_branch_release(pf->veb[i]);
8481 }
8482
8483 /* Release the VSIs on this VEB, but not the owner VSI.
8484 *
8485 * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8486 * the VEB itself, so don't use (*branch) after this loop.
8487 */
8488 for (i = 0; i < pf->num_alloc_vsi; i++) {
8489 if (!pf->vsi[i])
8490 continue;
8491 if (pf->vsi[i]->uplink_seid == branch_seid &&
8492 (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8493 i40e_vsi_release(pf->vsi[i]);
8494 }
8495 }
8496
8497 /* There's one corner case where the VEB might not have been
8498 * removed, so double check it here and remove it if needed.
8499 * This case happens if the veb was created from the debugfs
8500 * commands and no VSIs were added to it.
8501 */
8502 if (pf->veb[veb_idx])
8503 i40e_veb_release(pf->veb[veb_idx]);
8504 }
8505
8506 /**
8507 * i40e_veb_clear - remove veb struct
8508 * @veb: the veb to remove
8509 **/
8510 static void i40e_veb_clear(struct i40e_veb *veb)
8511 {
8512 if (!veb)
8513 return;
8514
8515 if (veb->pf) {
8516 struct i40e_pf *pf = veb->pf;
8517
8518 mutex_lock(&pf->switch_mutex);
8519 if (pf->veb[veb->idx] == veb)
8520 pf->veb[veb->idx] = NULL;
8521 mutex_unlock(&pf->switch_mutex);
8522 }
8523
8524 kfree(veb);
8525 }
8526
8527 /**
8528 * i40e_veb_release - Delete a VEB and free its resources
8529 * @veb: the VEB being removed
8530 **/
8531 void i40e_veb_release(struct i40e_veb *veb)
8532 {
8533 struct i40e_vsi *vsi = NULL;
8534 struct i40e_pf *pf;
8535 int i, n = 0;
8536
8537 pf = veb->pf;
8538
8539 /* find the remaining VSI and check for extras */
8540 for (i = 0; i < pf->num_alloc_vsi; i++) {
8541 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8542 n++;
8543 vsi = pf->vsi[i];
8544 }
8545 }
8546 if (n != 1) {
8547 dev_info(&pf->pdev->dev,
8548 "can't remove VEB %d with %d VSIs left\n",
8549 veb->seid, n);
8550 return;
8551 }
8552
8553 /* move the remaining VSI to uplink veb */
8554 vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8555 if (veb->uplink_seid) {
8556 vsi->uplink_seid = veb->uplink_seid;
8557 if (veb->uplink_seid == pf->mac_seid)
8558 vsi->veb_idx = I40E_NO_VEB;
8559 else
8560 vsi->veb_idx = veb->veb_idx;
8561 } else {
8562 /* floating VEB */
8563 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8564 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8565 }
8566
8567 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8568 i40e_veb_clear(veb);
8569 }
8570
8571 /**
8572 * i40e_add_veb - create the VEB in the switch
8573 * @veb: the VEB to be instantiated
8574 * @vsi: the controlling VSI
8575 **/
8576 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8577 {
8578 bool is_default = false;
8579 bool is_cloud = false;
8580 int ret;
8581
8582 /* get a VEB from the hardware */
8583 ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8584 veb->enabled_tc, is_default,
8585 is_cloud, &veb->seid, NULL);
8586 if (ret) {
8587 dev_info(&veb->pf->pdev->dev,
8588 "couldn't add VEB, err %d, aq_err %d\n",
8589 ret, veb->pf->hw.aq.asq_last_status);
8590 return -EPERM;
8591 }
8592
8593 /* get statistics counter */
8594 ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8595 &veb->stats_idx, NULL, NULL, NULL);
8596 if (ret) {
8597 dev_info(&veb->pf->pdev->dev,
8598 "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8599 ret, veb->pf->hw.aq.asq_last_status);
8600 return -EPERM;
8601 }
8602 ret = i40e_veb_get_bw_info(veb);
8603 if (ret) {
8604 dev_info(&veb->pf->pdev->dev,
8605 "couldn't get VEB bw info, err %d, aq_err %d\n",
8606 ret, veb->pf->hw.aq.asq_last_status);
8607 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8608 return -ENOENT;
8609 }
8610
8611 vsi->uplink_seid = veb->seid;
8612 vsi->veb_idx = veb->idx;
8613 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8614
8615 return 0;
8616 }
8617
8618 /**
8619 * i40e_veb_setup - Set up a VEB
8620 * @pf: board private structure
8621 * @flags: VEB setup flags
8622 * @uplink_seid: the switch element to link to
8623 * @vsi_seid: the initial VSI seid
8624 * @enabled_tc: Enabled TC bit-map
8625 *
8626 * This allocates the sw VEB structure and links it into the switch
8627 * It is possible and legal for this to be a duplicate of an already
8628 * existing VEB. It is also possible for both uplink and vsi seids
8629 * to be zero, in order to create a floating VEB.
8630 *
8631 * Returns pointer to the successfully allocated VEB sw struct on
8632 * success, otherwise returns NULL on failure.
8633 **/
8634 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8635 u16 uplink_seid, u16 vsi_seid,
8636 u8 enabled_tc)
8637 {
8638 struct i40e_veb *veb, *uplink_veb = NULL;
8639 int vsi_idx, veb_idx;
8640 int ret;
8641
8642 /* if one seid is 0, the other must be 0 to create a floating relay */
8643 if ((uplink_seid == 0 || vsi_seid == 0) &&
8644 (uplink_seid + vsi_seid != 0)) {
8645 dev_info(&pf->pdev->dev,
8646 "one, not both seid's are 0: uplink=%d vsi=%d\n",
8647 uplink_seid, vsi_seid);
8648 return NULL;
8649 }
8650
8651 /* make sure there is such a vsi and uplink */
8652 for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8653 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8654 break;
8655 if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8656 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8657 vsi_seid);
8658 return NULL;
8659 }
8660
8661 if (uplink_seid && uplink_seid != pf->mac_seid) {
8662 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8663 if (pf->veb[veb_idx] &&
8664 pf->veb[veb_idx]->seid == uplink_seid) {
8665 uplink_veb = pf->veb[veb_idx];
8666 break;
8667 }
8668 }
8669 if (!uplink_veb) {
8670 dev_info(&pf->pdev->dev,
8671 "uplink seid %d not found\n", uplink_seid);
8672 return NULL;
8673 }
8674 }
8675
8676 /* get veb sw struct */
8677 veb_idx = i40e_veb_mem_alloc(pf);
8678 if (veb_idx < 0)
8679 goto err_alloc;
8680 veb = pf->veb[veb_idx];
8681 veb->flags = flags;
8682 veb->uplink_seid = uplink_seid;
8683 veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8684 veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8685
8686 /* create the VEB in the switch */
8687 ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8688 if (ret)
8689 goto err_veb;
8690 if (vsi_idx == pf->lan_vsi)
8691 pf->lan_veb = veb->idx;
8692
8693 return veb;
8694
8695 err_veb:
8696 i40e_veb_clear(veb);
8697 err_alloc:
8698 return NULL;
8699 }
8700
8701 /**
8702 * i40e_setup_pf_switch_element - set pf vars based on switch type
8703 * @pf: board private structure
8704 * @ele: element we are building info from
8705 * @num_reported: total number of elements
8706 * @printconfig: should we print the contents
8707 *
8708 * helper function to assist in extracting a few useful SEID values.
8709 **/
8710 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8711 struct i40e_aqc_switch_config_element_resp *ele,
8712 u16 num_reported, bool printconfig)
8713 {
8714 u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8715 u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8716 u8 element_type = ele->element_type;
8717 u16 seid = le16_to_cpu(ele->seid);
8718
8719 if (printconfig)
8720 dev_info(&pf->pdev->dev,
8721 "type=%d seid=%d uplink=%d downlink=%d\n",
8722 element_type, seid, uplink_seid, downlink_seid);
8723
8724 switch (element_type) {
8725 case I40E_SWITCH_ELEMENT_TYPE_MAC:
8726 pf->mac_seid = seid;
8727 break;
8728 case I40E_SWITCH_ELEMENT_TYPE_VEB:
8729 /* Main VEB? */
8730 if (uplink_seid != pf->mac_seid)
8731 break;
8732 if (pf->lan_veb == I40E_NO_VEB) {
8733 int v;
8734
8735 /* find existing or else empty VEB */
8736 for (v = 0; v < I40E_MAX_VEB; v++) {
8737 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8738 pf->lan_veb = v;
8739 break;
8740 }
8741 }
8742 if (pf->lan_veb == I40E_NO_VEB) {
8743 v = i40e_veb_mem_alloc(pf);
8744 if (v < 0)
8745 break;
8746 pf->lan_veb = v;
8747 }
8748 }
8749
8750 pf->veb[pf->lan_veb]->seid = seid;
8751 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8752 pf->veb[pf->lan_veb]->pf = pf;
8753 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8754 break;
8755 case I40E_SWITCH_ELEMENT_TYPE_VSI:
8756 if (num_reported != 1)
8757 break;
8758 /* This is immediately after a reset so we can assume this is
8759 * the PF's VSI
8760 */
8761 pf->mac_seid = uplink_seid;
8762 pf->pf_seid = downlink_seid;
8763 pf->main_vsi_seid = seid;
8764 if (printconfig)
8765 dev_info(&pf->pdev->dev,
8766 "pf_seid=%d main_vsi_seid=%d\n",
8767 pf->pf_seid, pf->main_vsi_seid);
8768 break;
8769 case I40E_SWITCH_ELEMENT_TYPE_PF:
8770 case I40E_SWITCH_ELEMENT_TYPE_VF:
8771 case I40E_SWITCH_ELEMENT_TYPE_EMP:
8772 case I40E_SWITCH_ELEMENT_TYPE_BMC:
8773 case I40E_SWITCH_ELEMENT_TYPE_PE:
8774 case I40E_SWITCH_ELEMENT_TYPE_PA:
8775 /* ignore these for now */
8776 break;
8777 default:
8778 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8779 element_type, seid);
8780 break;
8781 }
8782 }
8783
8784 /**
8785 * i40e_fetch_switch_configuration - Get switch config from firmware
8786 * @pf: board private structure
8787 * @printconfig: should we print the contents
8788 *
8789 * Get the current switch configuration from the device and
8790 * extract a few useful SEID values.
8791 **/
8792 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8793 {
8794 struct i40e_aqc_get_switch_config_resp *sw_config;
8795 u16 next_seid = 0;
8796 int ret = 0;
8797 u8 *aq_buf;
8798 int i;
8799
8800 aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8801 if (!aq_buf)
8802 return -ENOMEM;
8803
8804 sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8805 do {
8806 u16 num_reported, num_total;
8807
8808 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8809 I40E_AQ_LARGE_BUF,
8810 &next_seid, NULL);
8811 if (ret) {
8812 dev_info(&pf->pdev->dev,
8813 "get switch config failed %d aq_err=%x\n",
8814 ret, pf->hw.aq.asq_last_status);
8815 kfree(aq_buf);
8816 return -ENOENT;
8817 }
8818
8819 num_reported = le16_to_cpu(sw_config->header.num_reported);
8820 num_total = le16_to_cpu(sw_config->header.num_total);
8821
8822 if (printconfig)
8823 dev_info(&pf->pdev->dev,
8824 "header: %d reported %d total\n",
8825 num_reported, num_total);
8826
8827 for (i = 0; i < num_reported; i++) {
8828 struct i40e_aqc_switch_config_element_resp *ele =
8829 &sw_config->element[i];
8830
8831 i40e_setup_pf_switch_element(pf, ele, num_reported,
8832 printconfig);
8833 }
8834 } while (next_seid != 0);
8835
8836 kfree(aq_buf);
8837 return ret;
8838 }
8839
8840 /**
8841 * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8842 * @pf: board private structure
8843 * @reinit: if the Main VSI needs to re-initialized.
8844 *
8845 * Returns 0 on success, negative value on failure
8846 **/
8847 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8848 {
8849 int ret;
8850
8851 /* find out what's out there already */
8852 ret = i40e_fetch_switch_configuration(pf, false);
8853 if (ret) {
8854 dev_info(&pf->pdev->dev,
8855 "couldn't fetch switch config, err %d, aq_err %d\n",
8856 ret, pf->hw.aq.asq_last_status);
8857 return ret;
8858 }
8859 i40e_pf_reset_stats(pf);
8860
8861 /* first time setup */
8862 if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8863 struct i40e_vsi *vsi = NULL;
8864 u16 uplink_seid;
8865
8866 /* Set up the PF VSI associated with the PF's main VSI
8867 * that is already in the HW switch
8868 */
8869 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8870 uplink_seid = pf->veb[pf->lan_veb]->seid;
8871 else
8872 uplink_seid = pf->mac_seid;
8873 if (pf->lan_vsi == I40E_NO_VSI)
8874 vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8875 else if (reinit)
8876 vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8877 if (!vsi) {
8878 dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8879 i40e_fdir_teardown(pf);
8880 return -EAGAIN;
8881 }
8882 } else {
8883 /* force a reset of TC and queue layout configurations */
8884 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8885 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8886 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8887 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8888 }
8889 i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8890
8891 i40e_fdir_sb_setup(pf);
8892
8893 /* Setup static PF queue filter control settings */
8894 ret = i40e_setup_pf_filter_control(pf);
8895 if (ret) {
8896 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8897 ret);
8898 /* Failure here should not stop continuing other steps */
8899 }
8900
8901 /* enable RSS in the HW, even for only one queue, as the stack can use
8902 * the hash
8903 */
8904 if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8905 i40e_config_rss(pf);
8906
8907 /* fill in link information and enable LSE reporting */
8908 i40e_update_link_info(&pf->hw, true);
8909 i40e_link_event(pf);
8910
8911 /* Initialize user-specific link properties */
8912 pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8913 I40E_AQ_AN_COMPLETED) ? true : false);
8914
8915 /* fill in link information and enable LSE reporting */
8916 i40e_update_link_info(&pf->hw, true);
8917 i40e_link_event(pf);
8918
8919 /* Initialize user-specific link properties */
8920 pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8921 I40E_AQ_AN_COMPLETED) ? true : false);
8922
8923 i40e_ptp_init(pf);
8924
8925 return ret;
8926 }
8927
8928 /**
8929 * i40e_determine_queue_usage - Work out queue distribution
8930 * @pf: board private structure
8931 **/
8932 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8933 {
8934 int queues_left;
8935
8936 pf->num_lan_qps = 0;
8937 #ifdef I40E_FCOE
8938 pf->num_fcoe_qps = 0;
8939 #endif
8940
8941 /* Find the max queues to be put into basic use. We'll always be
8942 * using TC0, whether or not DCB is running, and TC0 will get the
8943 * big RSS set.
8944 */
8945 queues_left = pf->hw.func_caps.num_tx_qp;
8946
8947 if ((queues_left == 1) ||
8948 !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8949 /* one qp for PF, no queues for anything else */
8950 queues_left = 0;
8951 pf->rss_size = pf->num_lan_qps = 1;
8952
8953 /* make sure all the fancies are disabled */
8954 pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
8955 #ifdef I40E_FCOE
8956 I40E_FLAG_FCOE_ENABLED |
8957 #endif
8958 I40E_FLAG_FD_SB_ENABLED |
8959 I40E_FLAG_FD_ATR_ENABLED |
8960 I40E_FLAG_DCB_CAPABLE |
8961 I40E_FLAG_SRIOV_ENABLED |
8962 I40E_FLAG_VMDQ_ENABLED);
8963 } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8964 I40E_FLAG_FD_SB_ENABLED |
8965 I40E_FLAG_FD_ATR_ENABLED |
8966 I40E_FLAG_DCB_CAPABLE))) {
8967 /* one qp for PF */
8968 pf->rss_size = pf->num_lan_qps = 1;
8969 queues_left -= pf->num_lan_qps;
8970
8971 pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
8972 #ifdef I40E_FCOE
8973 I40E_FLAG_FCOE_ENABLED |
8974 #endif
8975 I40E_FLAG_FD_SB_ENABLED |
8976 I40E_FLAG_FD_ATR_ENABLED |
8977 I40E_FLAG_DCB_ENABLED |
8978 I40E_FLAG_VMDQ_ENABLED);
8979 } else {
8980 /* Not enough queues for all TCs */
8981 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8982 (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8983 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8984 dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8985 }
8986 pf->num_lan_qps = pf->rss_size_max;
8987 queues_left -= pf->num_lan_qps;
8988 }
8989
8990 #ifdef I40E_FCOE
8991 if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8992 if (I40E_DEFAULT_FCOE <= queues_left) {
8993 pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8994 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8995 pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8996 } else {
8997 pf->num_fcoe_qps = 0;
8998 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8999 dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9000 }
9001
9002 queues_left -= pf->num_fcoe_qps;
9003 }
9004
9005 #endif
9006 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9007 if (queues_left > 1) {
9008 queues_left -= 1; /* save 1 queue for FD */
9009 } else {
9010 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9011 dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9012 }
9013 }
9014
9015 if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9016 pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9017 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9018 (queues_left / pf->num_vf_qps));
9019 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9020 }
9021
9022 if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9023 pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9024 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9025 (queues_left / pf->num_vmdq_qps));
9026 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9027 }
9028
9029 pf->queues_left = queues_left;
9030 #ifdef I40E_FCOE
9031 dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9032 #endif
9033 }
9034
9035 /**
9036 * i40e_setup_pf_filter_control - Setup PF static filter control
9037 * @pf: PF to be setup
9038 *
9039 * i40e_setup_pf_filter_control sets up a pf's initial filter control
9040 * settings. If PE/FCoE are enabled then it will also set the per PF
9041 * based filter sizes required for them. It also enables Flow director,
9042 * ethertype and macvlan type filter settings for the pf.
9043 *
9044 * Returns 0 on success, negative on failure
9045 **/
9046 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9047 {
9048 struct i40e_filter_control_settings *settings = &pf->filter_settings;
9049
9050 settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9051
9052 /* Flow Director is enabled */
9053 if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9054 settings->enable_fdir = true;
9055
9056 /* Ethtype and MACVLAN filters enabled for PF */
9057 settings->enable_ethtype = true;
9058 settings->enable_macvlan = true;
9059
9060 if (i40e_set_filter_control(&pf->hw, settings))
9061 return -ENOENT;
9062
9063 return 0;
9064 }
9065
9066 #define INFO_STRING_LEN 255
9067 static void i40e_print_features(struct i40e_pf *pf)
9068 {
9069 struct i40e_hw *hw = &pf->hw;
9070 char *buf, *string;
9071
9072 string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9073 if (!string) {
9074 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9075 return;
9076 }
9077
9078 buf = string;
9079
9080 buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9081 #ifdef CONFIG_PCI_IOV
9082 buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9083 #endif
9084 buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
9085 pf->vsi[pf->lan_vsi]->num_queue_pairs);
9086
9087 if (pf->flags & I40E_FLAG_RSS_ENABLED)
9088 buf += sprintf(buf, "RSS ");
9089 if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9090 buf += sprintf(buf, "FD_ATR ");
9091 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9092 buf += sprintf(buf, "FD_SB ");
9093 buf += sprintf(buf, "NTUPLE ");
9094 }
9095 if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9096 buf += sprintf(buf, "DCB ");
9097 if (pf->flags & I40E_FLAG_PTP)
9098 buf += sprintf(buf, "PTP ");
9099 #ifdef I40E_FCOE
9100 if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9101 buf += sprintf(buf, "FCOE ");
9102 #endif
9103
9104 BUG_ON(buf > (string + INFO_STRING_LEN));
9105 dev_info(&pf->pdev->dev, "%s\n", string);
9106 kfree(string);
9107 }
9108
9109 /**
9110 * i40e_probe - Device initialization routine
9111 * @pdev: PCI device information struct
9112 * @ent: entry in i40e_pci_tbl
9113 *
9114 * i40e_probe initializes a pf identified by a pci_dev structure.
9115 * The OS initialization, configuring of the pf private structure,
9116 * and a hardware reset occur.
9117 *
9118 * Returns 0 on success, negative on failure
9119 **/
9120 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9121 {
9122 struct i40e_pf *pf;
9123 struct i40e_hw *hw;
9124 static u16 pfs_found;
9125 u16 link_status;
9126 int err = 0;
9127 u32 len;
9128 u32 i;
9129
9130 err = pci_enable_device_mem(pdev);
9131 if (err)
9132 return err;
9133
9134 /* set up for high or low dma */
9135 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9136 if (err) {
9137 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9138 if (err) {
9139 dev_err(&pdev->dev,
9140 "DMA configuration failed: 0x%x\n", err);
9141 goto err_dma;
9142 }
9143 }
9144
9145 /* set up pci connections */
9146 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9147 IORESOURCE_MEM), i40e_driver_name);
9148 if (err) {
9149 dev_info(&pdev->dev,
9150 "pci_request_selected_regions failed %d\n", err);
9151 goto err_pci_reg;
9152 }
9153
9154 pci_enable_pcie_error_reporting(pdev);
9155 pci_set_master(pdev);
9156
9157 /* Now that we have a PCI connection, we need to do the
9158 * low level device setup. This is primarily setting up
9159 * the Admin Queue structures and then querying for the
9160 * device's current profile information.
9161 */
9162 pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9163 if (!pf) {
9164 err = -ENOMEM;
9165 goto err_pf_alloc;
9166 }
9167 pf->next_vsi = 0;
9168 pf->pdev = pdev;
9169 set_bit(__I40E_DOWN, &pf->state);
9170
9171 hw = &pf->hw;
9172 hw->back = pf;
9173 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9174 pci_resource_len(pdev, 0));
9175 if (!hw->hw_addr) {
9176 err = -EIO;
9177 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9178 (unsigned int)pci_resource_start(pdev, 0),
9179 (unsigned int)pci_resource_len(pdev, 0), err);
9180 goto err_ioremap;
9181 }
9182 hw->vendor_id = pdev->vendor;
9183 hw->device_id = pdev->device;
9184 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9185 hw->subsystem_vendor_id = pdev->subsystem_vendor;
9186 hw->subsystem_device_id = pdev->subsystem_device;
9187 hw->bus.device = PCI_SLOT(pdev->devfn);
9188 hw->bus.func = PCI_FUNC(pdev->devfn);
9189 pf->instance = pfs_found;
9190
9191 if (debug != -1) {
9192 pf->msg_enable = pf->hw.debug_mask;
9193 pf->msg_enable = debug;
9194 }
9195
9196 /* do a special CORER for clearing PXE mode once at init */
9197 if (hw->revision_id == 0 &&
9198 (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9199 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9200 i40e_flush(hw);
9201 msleep(200);
9202 pf->corer_count++;
9203
9204 i40e_clear_pxe_mode(hw);
9205 }
9206
9207 /* Reset here to make sure all is clean and to define PF 'n' */
9208 i40e_clear_hw(hw);
9209 err = i40e_pf_reset(hw);
9210 if (err) {
9211 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9212 goto err_pf_reset;
9213 }
9214 pf->pfr_count++;
9215
9216 hw->aq.num_arq_entries = I40E_AQ_LEN;
9217 hw->aq.num_asq_entries = I40E_AQ_LEN;
9218 hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9219 hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9220 pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9221
9222 snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9223 "%s-%s:misc",
9224 dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9225
9226 err = i40e_init_shared_code(hw);
9227 if (err) {
9228 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9229 goto err_pf_reset;
9230 }
9231
9232 /* set up a default setting for link flow control */
9233 pf->hw.fc.requested_mode = I40E_FC_NONE;
9234
9235 err = i40e_init_adminq(hw);
9236 dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9237 if (err) {
9238 dev_info(&pdev->dev,
9239 "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
9240 goto err_pf_reset;
9241 }
9242
9243 if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9244 hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9245 dev_info(&pdev->dev,
9246 "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
9247 else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9248 hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9249 dev_info(&pdev->dev,
9250 "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9251
9252
9253 i40e_verify_eeprom(pf);
9254
9255 /* Rev 0 hardware was never productized */
9256 if (hw->revision_id < 1)
9257 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
9258
9259 i40e_clear_pxe_mode(hw);
9260 err = i40e_get_capabilities(pf);
9261 if (err)
9262 goto err_adminq_setup;
9263
9264 err = i40e_sw_init(pf);
9265 if (err) {
9266 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9267 goto err_sw_init;
9268 }
9269
9270 err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9271 hw->func_caps.num_rx_qp,
9272 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9273 if (err) {
9274 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9275 goto err_init_lan_hmc;
9276 }
9277
9278 err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9279 if (err) {
9280 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9281 err = -ENOENT;
9282 goto err_configure_lan_hmc;
9283 }
9284
9285 /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9286 * Ignore error return codes because if it was already disabled via
9287 * hardware settings this will fail
9288 */
9289 if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9290 (pf->hw.aq.fw_maj_ver < 4)) {
9291 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9292 i40e_aq_stop_lldp(hw, true, NULL);
9293 }
9294
9295 i40e_get_mac_addr(hw, hw->mac.addr);
9296 if (!is_valid_ether_addr(hw->mac.addr)) {
9297 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9298 err = -EIO;
9299 goto err_mac_addr;
9300 }
9301 dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9302 ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9303 i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9304 if (is_valid_ether_addr(hw->mac.port_addr))
9305 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9306 #ifdef I40E_FCOE
9307 err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9308 if (err)
9309 dev_info(&pdev->dev,
9310 "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9311 if (!is_valid_ether_addr(hw->mac.san_addr)) {
9312 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9313 hw->mac.san_addr);
9314 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9315 }
9316 dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9317 #endif /* I40E_FCOE */
9318
9319 pci_set_drvdata(pdev, pf);
9320 pci_save_state(pdev);
9321 #ifdef CONFIG_I40E_DCB
9322 err = i40e_init_pf_dcb(pf);
9323 if (err) {
9324 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9325 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9326 /* Continue without DCB enabled */
9327 }
9328 #endif /* CONFIG_I40E_DCB */
9329
9330 /* set up periodic task facility */
9331 setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9332 pf->service_timer_period = HZ;
9333
9334 INIT_WORK(&pf->service_task, i40e_service_task);
9335 clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9336 pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9337 pf->link_check_timeout = jiffies;
9338
9339 /* WoL defaults to disabled */
9340 pf->wol_en = false;
9341 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9342
9343 /* set up the main switch operations */
9344 i40e_determine_queue_usage(pf);
9345 i40e_init_interrupt_scheme(pf);
9346
9347 /* The number of VSIs reported by the FW is the minimum guaranteed
9348 * to us; HW supports far more and we share the remaining pool with
9349 * the other PFs. We allocate space for more than the guarantee with
9350 * the understanding that we might not get them all later.
9351 */
9352 if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9353 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9354 else
9355 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9356
9357 /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9358 len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9359 pf->vsi = kzalloc(len, GFP_KERNEL);
9360 if (!pf->vsi) {
9361 err = -ENOMEM;
9362 goto err_switch_setup;
9363 }
9364
9365 err = i40e_setup_pf_switch(pf, false);
9366 if (err) {
9367 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9368 goto err_vsis;
9369 }
9370 /* if FDIR VSI was set up, start it now */
9371 for (i = 0; i < pf->num_alloc_vsi; i++) {
9372 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9373 i40e_vsi_open(pf->vsi[i]);
9374 break;
9375 }
9376 }
9377
9378 /* driver is only interested in link up/down and module qualification
9379 * reports from firmware
9380 */
9381 err = i40e_aq_set_phy_int_mask(&pf->hw,
9382 I40E_AQ_EVENT_LINK_UPDOWN |
9383 I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9384 if (err)
9385 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9386
9387 msleep(75);
9388 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9389 if (err) {
9390 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9391 pf->hw.aq.asq_last_status);
9392 }
9393
9394 /* The main driver is (mostly) up and happy. We need to set this state
9395 * before setting up the misc vector or we get a race and the vector
9396 * ends up disabled forever.
9397 */
9398 clear_bit(__I40E_DOWN, &pf->state);
9399
9400 /* In case of MSIX we are going to setup the misc vector right here
9401 * to handle admin queue events etc. In case of legacy and MSI
9402 * the misc functionality and queue processing is combined in
9403 * the same vector and that gets setup at open.
9404 */
9405 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9406 err = i40e_setup_misc_vector(pf);
9407 if (err) {
9408 dev_info(&pdev->dev,
9409 "setup of misc vector failed: %d\n", err);
9410 goto err_vsis;
9411 }
9412 }
9413
9414 #ifdef CONFIG_PCI_IOV
9415 /* prep for VF support */
9416 if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9417 (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9418 !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9419 u32 val;
9420
9421 /* disable link interrupts for VFs */
9422 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9423 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9424 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9425 i40e_flush(hw);
9426
9427 if (pci_num_vf(pdev)) {
9428 dev_info(&pdev->dev,
9429 "Active VFs found, allocating resources.\n");
9430 err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9431 if (err)
9432 dev_info(&pdev->dev,
9433 "Error %d allocating resources for existing VFs\n",
9434 err);
9435 }
9436 }
9437 #endif /* CONFIG_PCI_IOV */
9438
9439 pfs_found++;
9440
9441 i40e_dbg_pf_init(pf);
9442
9443 /* tell the firmware that we're starting */
9444 i40e_send_version(pf);
9445
9446 /* since everything's happy, start the service_task timer */
9447 mod_timer(&pf->service_timer,
9448 round_jiffies(jiffies + pf->service_timer_period));
9449
9450 #ifdef I40E_FCOE
9451 /* create FCoE interface */
9452 i40e_fcoe_vsi_setup(pf);
9453
9454 #endif
9455 /* Get the negotiated link width and speed from PCI config space */
9456 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9457
9458 i40e_set_pci_config_data(hw, link_status);
9459
9460 dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9461 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9462 hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9463 hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9464 "Unknown"),
9465 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9466 hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9467 hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9468 hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9469 "Unknown"));
9470
9471 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9472 hw->bus.speed < i40e_bus_speed_8000) {
9473 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9474 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9475 }
9476
9477 /* print a string summarizing features */
9478 i40e_print_features(pf);
9479
9480 return 0;
9481
9482 /* Unwind what we've done if something failed in the setup */
9483 err_vsis:
9484 set_bit(__I40E_DOWN, &pf->state);
9485 i40e_clear_interrupt_scheme(pf);
9486 kfree(pf->vsi);
9487 err_switch_setup:
9488 i40e_reset_interrupt_capability(pf);
9489 del_timer_sync(&pf->service_timer);
9490 err_mac_addr:
9491 err_configure_lan_hmc:
9492 (void)i40e_shutdown_lan_hmc(hw);
9493 err_init_lan_hmc:
9494 kfree(pf->qp_pile);
9495 kfree(pf->irq_pile);
9496 err_sw_init:
9497 err_adminq_setup:
9498 (void)i40e_shutdown_adminq(hw);
9499 err_pf_reset:
9500 iounmap(hw->hw_addr);
9501 err_ioremap:
9502 kfree(pf);
9503 err_pf_alloc:
9504 pci_disable_pcie_error_reporting(pdev);
9505 pci_release_selected_regions(pdev,
9506 pci_select_bars(pdev, IORESOURCE_MEM));
9507 err_pci_reg:
9508 err_dma:
9509 pci_disable_device(pdev);
9510 return err;
9511 }
9512
9513 /**
9514 * i40e_remove - Device removal routine
9515 * @pdev: PCI device information struct
9516 *
9517 * i40e_remove is called by the PCI subsystem to alert the driver
9518 * that is should release a PCI device. This could be caused by a
9519 * Hot-Plug event, or because the driver is going to be removed from
9520 * memory.
9521 **/
9522 static void i40e_remove(struct pci_dev *pdev)
9523 {
9524 struct i40e_pf *pf = pci_get_drvdata(pdev);
9525 i40e_status ret_code;
9526 int i;
9527
9528 i40e_dbg_pf_exit(pf);
9529
9530 i40e_ptp_stop(pf);
9531
9532 /* no more scheduling of any task */
9533 set_bit(__I40E_DOWN, &pf->state);
9534 del_timer_sync(&pf->service_timer);
9535 cancel_work_sync(&pf->service_task);
9536
9537 if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9538 i40e_free_vfs(pf);
9539 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9540 }
9541
9542 i40e_fdir_teardown(pf);
9543
9544 /* If there is a switch structure or any orphans, remove them.
9545 * This will leave only the PF's VSI remaining.
9546 */
9547 for (i = 0; i < I40E_MAX_VEB; i++) {
9548 if (!pf->veb[i])
9549 continue;
9550
9551 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9552 pf->veb[i]->uplink_seid == 0)
9553 i40e_switch_branch_release(pf->veb[i]);
9554 }
9555
9556 /* Now we can shutdown the PF's VSI, just before we kill
9557 * adminq and hmc.
9558 */
9559 if (pf->vsi[pf->lan_vsi])
9560 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9561
9562 i40e_stop_misc_vector(pf);
9563 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9564 synchronize_irq(pf->msix_entries[0].vector);
9565 free_irq(pf->msix_entries[0].vector, pf);
9566 }
9567
9568 /* shutdown and destroy the HMC */
9569 if (pf->hw.hmc.hmc_obj) {
9570 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9571 if (ret_code)
9572 dev_warn(&pdev->dev,
9573 "Failed to destroy the HMC resources: %d\n",
9574 ret_code);
9575 }
9576
9577 /* shutdown the adminq */
9578 ret_code = i40e_shutdown_adminq(&pf->hw);
9579 if (ret_code)
9580 dev_warn(&pdev->dev,
9581 "Failed to destroy the Admin Queue resources: %d\n",
9582 ret_code);
9583
9584 /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9585 i40e_clear_interrupt_scheme(pf);
9586 for (i = 0; i < pf->num_alloc_vsi; i++) {
9587 if (pf->vsi[i]) {
9588 i40e_vsi_clear_rings(pf->vsi[i]);
9589 i40e_vsi_clear(pf->vsi[i]);
9590 pf->vsi[i] = NULL;
9591 }
9592 }
9593
9594 for (i = 0; i < I40E_MAX_VEB; i++) {
9595 kfree(pf->veb[i]);
9596 pf->veb[i] = NULL;
9597 }
9598
9599 kfree(pf->qp_pile);
9600 kfree(pf->irq_pile);
9601 kfree(pf->vsi);
9602
9603 iounmap(pf->hw.hw_addr);
9604 kfree(pf);
9605 pci_release_selected_regions(pdev,
9606 pci_select_bars(pdev, IORESOURCE_MEM));
9607
9608 pci_disable_pcie_error_reporting(pdev);
9609 pci_disable_device(pdev);
9610 }
9611
9612 /**
9613 * i40e_pci_error_detected - warning that something funky happened in PCI land
9614 * @pdev: PCI device information struct
9615 *
9616 * Called to warn that something happened and the error handling steps
9617 * are in progress. Allows the driver to quiesce things, be ready for
9618 * remediation.
9619 **/
9620 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9621 enum pci_channel_state error)
9622 {
9623 struct i40e_pf *pf = pci_get_drvdata(pdev);
9624
9625 dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9626
9627 /* shutdown all operations */
9628 if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9629 rtnl_lock();
9630 i40e_prep_for_reset(pf);
9631 rtnl_unlock();
9632 }
9633
9634 /* Request a slot reset */
9635 return PCI_ERS_RESULT_NEED_RESET;
9636 }
9637
9638 /**
9639 * i40e_pci_error_slot_reset - a PCI slot reset just happened
9640 * @pdev: PCI device information struct
9641 *
9642 * Called to find if the driver can work with the device now that
9643 * the pci slot has been reset. If a basic connection seems good
9644 * (registers are readable and have sane content) then return a
9645 * happy little PCI_ERS_RESULT_xxx.
9646 **/
9647 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9648 {
9649 struct i40e_pf *pf = pci_get_drvdata(pdev);
9650 pci_ers_result_t result;
9651 int err;
9652 u32 reg;
9653
9654 dev_info(&pdev->dev, "%s\n", __func__);
9655 if (pci_enable_device_mem(pdev)) {
9656 dev_info(&pdev->dev,
9657 "Cannot re-enable PCI device after reset.\n");
9658 result = PCI_ERS_RESULT_DISCONNECT;
9659 } else {
9660 pci_set_master(pdev);
9661 pci_restore_state(pdev);
9662 pci_save_state(pdev);
9663 pci_wake_from_d3(pdev, false);
9664
9665 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9666 if (reg == 0)
9667 result = PCI_ERS_RESULT_RECOVERED;
9668 else
9669 result = PCI_ERS_RESULT_DISCONNECT;
9670 }
9671
9672 err = pci_cleanup_aer_uncorrect_error_status(pdev);
9673 if (err) {
9674 dev_info(&pdev->dev,
9675 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9676 err);
9677 /* non-fatal, continue */
9678 }
9679
9680 return result;
9681 }
9682
9683 /**
9684 * i40e_pci_error_resume - restart operations after PCI error recovery
9685 * @pdev: PCI device information struct
9686 *
9687 * Called to allow the driver to bring things back up after PCI error
9688 * and/or reset recovery has finished.
9689 **/
9690 static void i40e_pci_error_resume(struct pci_dev *pdev)
9691 {
9692 struct i40e_pf *pf = pci_get_drvdata(pdev);
9693
9694 dev_info(&pdev->dev, "%s\n", __func__);
9695 if (test_bit(__I40E_SUSPENDED, &pf->state))
9696 return;
9697
9698 rtnl_lock();
9699 i40e_handle_reset_warning(pf);
9700 rtnl_lock();
9701 }
9702
9703 /**
9704 * i40e_shutdown - PCI callback for shutting down
9705 * @pdev: PCI device information struct
9706 **/
9707 static void i40e_shutdown(struct pci_dev *pdev)
9708 {
9709 struct i40e_pf *pf = pci_get_drvdata(pdev);
9710 struct i40e_hw *hw = &pf->hw;
9711
9712 set_bit(__I40E_SUSPENDED, &pf->state);
9713 set_bit(__I40E_DOWN, &pf->state);
9714 rtnl_lock();
9715 i40e_prep_for_reset(pf);
9716 rtnl_unlock();
9717
9718 wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9719 wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9720
9721 if (system_state == SYSTEM_POWER_OFF) {
9722 pci_wake_from_d3(pdev, pf->wol_en);
9723 pci_set_power_state(pdev, PCI_D3hot);
9724 }
9725 }
9726
9727 #ifdef CONFIG_PM
9728 /**
9729 * i40e_suspend - PCI callback for moving to D3
9730 * @pdev: PCI device information struct
9731 **/
9732 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9733 {
9734 struct i40e_pf *pf = pci_get_drvdata(pdev);
9735 struct i40e_hw *hw = &pf->hw;
9736
9737 set_bit(__I40E_SUSPENDED, &pf->state);
9738 set_bit(__I40E_DOWN, &pf->state);
9739 del_timer_sync(&pf->service_timer);
9740 cancel_work_sync(&pf->service_task);
9741 rtnl_lock();
9742 i40e_prep_for_reset(pf);
9743 rtnl_unlock();
9744
9745 wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9746 wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9747
9748 pci_wake_from_d3(pdev, pf->wol_en);
9749 pci_set_power_state(pdev, PCI_D3hot);
9750
9751 return 0;
9752 }
9753
9754 /**
9755 * i40e_resume - PCI callback for waking up from D3
9756 * @pdev: PCI device information struct
9757 **/
9758 static int i40e_resume(struct pci_dev *pdev)
9759 {
9760 struct i40e_pf *pf = pci_get_drvdata(pdev);
9761 u32 err;
9762
9763 pci_set_power_state(pdev, PCI_D0);
9764 pci_restore_state(pdev);
9765 /* pci_restore_state() clears dev->state_saves, so
9766 * call pci_save_state() again to restore it.
9767 */
9768 pci_save_state(pdev);
9769
9770 err = pci_enable_device_mem(pdev);
9771 if (err) {
9772 dev_err(&pdev->dev,
9773 "%s: Cannot enable PCI device from suspend\n",
9774 __func__);
9775 return err;
9776 }
9777 pci_set_master(pdev);
9778
9779 /* no wakeup events while running */
9780 pci_wake_from_d3(pdev, false);
9781
9782 /* handling the reset will rebuild the device state */
9783 if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9784 clear_bit(__I40E_DOWN, &pf->state);
9785 rtnl_lock();
9786 i40e_reset_and_rebuild(pf, false);
9787 rtnl_unlock();
9788 }
9789
9790 return 0;
9791 }
9792
9793 #endif
9794 static const struct pci_error_handlers i40e_err_handler = {
9795 .error_detected = i40e_pci_error_detected,
9796 .slot_reset = i40e_pci_error_slot_reset,
9797 .resume = i40e_pci_error_resume,
9798 };
9799
9800 static struct pci_driver i40e_driver = {
9801 .name = i40e_driver_name,
9802 .id_table = i40e_pci_tbl,
9803 .probe = i40e_probe,
9804 .remove = i40e_remove,
9805 #ifdef CONFIG_PM
9806 .suspend = i40e_suspend,
9807 .resume = i40e_resume,
9808 #endif
9809 .shutdown = i40e_shutdown,
9810 .err_handler = &i40e_err_handler,
9811 .sriov_configure = i40e_pci_sriov_configure,
9812 };
9813
9814 /**
9815 * i40e_init_module - Driver registration routine
9816 *
9817 * i40e_init_module is the first routine called when the driver is
9818 * loaded. All it does is register with the PCI subsystem.
9819 **/
9820 static int __init i40e_init_module(void)
9821 {
9822 pr_info("%s: %s - version %s\n", i40e_driver_name,
9823 i40e_driver_string, i40e_driver_version_str);
9824 pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9825 i40e_dbg_init();
9826 return pci_register_driver(&i40e_driver);
9827 }
9828 module_init(i40e_init_module);
9829
9830 /**
9831 * i40e_exit_module - Driver exit cleanup routine
9832 *
9833 * i40e_exit_module is called just before the driver is removed
9834 * from memory.
9835 **/
9836 static void __exit i40e_exit_module(void)
9837 {
9838 pci_unregister_driver(&i40e_driver);
9839 i40e_dbg_exit();
9840 }
9841 module_exit(i40e_exit_module);
Linux kernel - Deliverables
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