blob: e782db9dca39ade5514d6cad63ace9ef927e7e5c [file] [log] [blame]
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001/*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Driver
Greg Rosedc641b72013-12-18 13:45:51 +00004 * Copyright(c) 2013 - 2014 Intel Corporation.
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005 *
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 *
Greg Rosedc641b72013-12-18 13:45:51 +000015 * 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/>.
Jesse Brandeburg41c445f2013-09-11 08:39:46 +000017 *
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"
Jeff Kirshera1c9a9d2013-12-28 07:32:18 +000029#ifdef CONFIG_I40E_VXLAN
30#include <net/vxlan.h>
31#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +000032
33const char i40e_driver_name[] = "i40e";
34static const char i40e_driver_string[] =
35 "Intel(R) Ethernet Connection XL710 Network Driver";
36
37#define DRV_KERN "-k"
38
39#define DRV_VERSION_MAJOR 0
40#define DRV_VERSION_MINOR 3
Catherine Sullivan7f61d1f2013-11-28 06:42:42 +000041#define DRV_VERSION_BUILD 25
Jesse Brandeburg41c445f2013-09-11 08:39:46 +000042#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
43 __stringify(DRV_VERSION_MINOR) "." \
44 __stringify(DRV_VERSION_BUILD) DRV_KERN
45const char i40e_driver_version_str[] = DRV_VERSION;
46static const char i40e_copyright[] = "Copyright (c) 2013 Intel Corporation.";
47
48/* a bit of forward declarations */
49static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
50static void i40e_handle_reset_warning(struct i40e_pf *pf);
51static int i40e_add_vsi(struct i40e_vsi *vsi);
52static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +000053static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +000054static int i40e_setup_misc_vector(struct i40e_pf *pf);
55static void i40e_determine_queue_usage(struct i40e_pf *pf);
56static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
57
58/* i40e_pci_tbl - PCI Device ID Table
59 *
60 * Last entry must be all 0s
61 *
62 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
63 * Class, Class Mask, private data (not used) }
64 */
65static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
66 {PCI_VDEVICE(INTEL, I40E_SFP_XL710_DEVICE_ID), 0},
67 {PCI_VDEVICE(INTEL, I40E_SFP_X710_DEVICE_ID), 0},
68 {PCI_VDEVICE(INTEL, I40E_QEMU_DEVICE_ID), 0},
69 {PCI_VDEVICE(INTEL, I40E_KX_A_DEVICE_ID), 0},
70 {PCI_VDEVICE(INTEL, I40E_KX_B_DEVICE_ID), 0},
71 {PCI_VDEVICE(INTEL, I40E_KX_C_DEVICE_ID), 0},
72 {PCI_VDEVICE(INTEL, I40E_KX_D_DEVICE_ID), 0},
73 {PCI_VDEVICE(INTEL, I40E_QSFP_A_DEVICE_ID), 0},
74 {PCI_VDEVICE(INTEL, I40E_QSFP_B_DEVICE_ID), 0},
75 {PCI_VDEVICE(INTEL, I40E_QSFP_C_DEVICE_ID), 0},
76 /* required last entry */
77 {0, }
78};
79MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
80
81#define I40E_MAX_VF_COUNT 128
82static int debug = -1;
83module_param(debug, int, 0);
84MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
85
86MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
87MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
88MODULE_LICENSE("GPL");
89MODULE_VERSION(DRV_VERSION);
90
91/**
92 * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
93 * @hw: pointer to the HW structure
94 * @mem: ptr to mem struct to fill out
95 * @size: size of memory requested
96 * @alignment: what to align the allocation to
97 **/
98int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
99 u64 size, u32 alignment)
100{
101 struct i40e_pf *pf = (struct i40e_pf *)hw->back;
102
103 mem->size = ALIGN(size, alignment);
104 mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
105 &mem->pa, GFP_KERNEL);
Jesse Brandeburg93bc73b2013-09-13 08:23:18 +0000106 if (!mem->va)
107 return -ENOMEM;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000108
Jesse Brandeburg93bc73b2013-09-13 08:23:18 +0000109 return 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000110}
111
112/**
113 * i40e_free_dma_mem_d - OS specific memory free for shared code
114 * @hw: pointer to the HW structure
115 * @mem: ptr to mem struct to free
116 **/
117int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
118{
119 struct i40e_pf *pf = (struct i40e_pf *)hw->back;
120
121 dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
122 mem->va = NULL;
123 mem->pa = 0;
124 mem->size = 0;
125
126 return 0;
127}
128
129/**
130 * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
131 * @hw: pointer to the HW structure
132 * @mem: ptr to mem struct to fill out
133 * @size: size of memory requested
134 **/
135int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
136 u32 size)
137{
138 mem->size = size;
139 mem->va = kzalloc(size, GFP_KERNEL);
140
Jesse Brandeburg93bc73b2013-09-13 08:23:18 +0000141 if (!mem->va)
142 return -ENOMEM;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000143
Jesse Brandeburg93bc73b2013-09-13 08:23:18 +0000144 return 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000145}
146
147/**
148 * i40e_free_virt_mem_d - OS specific memory free for shared code
149 * @hw: pointer to the HW structure
150 * @mem: ptr to mem struct to free
151 **/
152int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
153{
154 /* it's ok to kfree a NULL pointer */
155 kfree(mem->va);
156 mem->va = NULL;
157 mem->size = 0;
158
159 return 0;
160}
161
162/**
163 * i40e_get_lump - find a lump of free generic resource
164 * @pf: board private structure
165 * @pile: the pile of resource to search
166 * @needed: the number of items needed
167 * @id: an owner id to stick on the items assigned
168 *
169 * Returns the base item index of the lump, or negative for error
170 *
171 * The search_hint trick and lack of advanced fit-finding only work
172 * because we're highly likely to have all the same size lump requests.
173 * Linear search time and any fragmentation should be minimal.
174 **/
175static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
176 u16 needed, u16 id)
177{
178 int ret = -ENOMEM;
Jesse Brandeburgddf434a2013-09-13 08:23:19 +0000179 int i, j;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000180
181 if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
182 dev_info(&pf->pdev->dev,
183 "param err: pile=%p needed=%d id=0x%04x\n",
184 pile, needed, id);
185 return -EINVAL;
186 }
187
188 /* start the linear search with an imperfect hint */
189 i = pile->search_hint;
Jesse Brandeburgddf434a2013-09-13 08:23:19 +0000190 while (i < pile->num_entries) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000191 /* skip already allocated entries */
192 if (pile->list[i] & I40E_PILE_VALID_BIT) {
193 i++;
194 continue;
195 }
196
197 /* do we have enough in this lump? */
198 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
199 if (pile->list[i+j] & I40E_PILE_VALID_BIT)
200 break;
201 }
202
203 if (j == needed) {
204 /* there was enough, so assign it to the requestor */
205 for (j = 0; j < needed; j++)
206 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
207 ret = i;
208 pile->search_hint = i + j;
Jesse Brandeburgddf434a2013-09-13 08:23:19 +0000209 break;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000210 } else {
211 /* not enough, so skip over it and continue looking */
212 i += j;
213 }
214 }
215
216 return ret;
217}
218
219/**
220 * i40e_put_lump - return a lump of generic resource
221 * @pile: the pile of resource to search
222 * @index: the base item index
223 * @id: the owner id of the items assigned
224 *
225 * Returns the count of items in the lump
226 **/
227static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
228{
229 int valid_id = (id | I40E_PILE_VALID_BIT);
230 int count = 0;
231 int i;
232
233 if (!pile || index >= pile->num_entries)
234 return -EINVAL;
235
236 for (i = index;
237 i < pile->num_entries && pile->list[i] == valid_id;
238 i++) {
239 pile->list[i] = 0;
240 count++;
241 }
242
243 if (count && index < pile->search_hint)
244 pile->search_hint = index;
245
246 return count;
247}
248
249/**
250 * i40e_service_event_schedule - Schedule the service task to wake up
251 * @pf: board private structure
252 *
253 * If not already scheduled, this puts the task into the work queue
254 **/
255static void i40e_service_event_schedule(struct i40e_pf *pf)
256{
257 if (!test_bit(__I40E_DOWN, &pf->state) &&
258 !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
259 !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
260 schedule_work(&pf->service_task);
261}
262
263/**
264 * i40e_tx_timeout - Respond to a Tx Hang
265 * @netdev: network interface device structure
266 *
267 * If any port has noticed a Tx timeout, it is likely that the whole
268 * device is munged, not just the one netdev port, so go for the full
269 * reset.
270 **/
271static void i40e_tx_timeout(struct net_device *netdev)
272{
273 struct i40e_netdev_priv *np = netdev_priv(netdev);
274 struct i40e_vsi *vsi = np->vsi;
275 struct i40e_pf *pf = vsi->back;
276
277 pf->tx_timeout_count++;
278
279 if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
280 pf->tx_timeout_recovery_level = 0;
281 pf->tx_timeout_last_recovery = jiffies;
282 netdev_info(netdev, "tx_timeout recovery level %d\n",
283 pf->tx_timeout_recovery_level);
284
285 switch (pf->tx_timeout_recovery_level) {
286 case 0:
287 /* disable and re-enable queues for the VSI */
288 if (in_interrupt()) {
289 set_bit(__I40E_REINIT_REQUESTED, &pf->state);
290 set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
291 } else {
292 i40e_vsi_reinit_locked(vsi);
293 }
294 break;
295 case 1:
296 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
297 break;
298 case 2:
299 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
300 break;
301 case 3:
302 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
303 break;
304 default:
305 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
306 i40e_down(vsi);
307 break;
308 }
309 i40e_service_event_schedule(pf);
310 pf->tx_timeout_recovery_level++;
311}
312
313/**
314 * i40e_release_rx_desc - Store the new tail and head values
315 * @rx_ring: ring to bump
316 * @val: new head index
317 **/
318static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
319{
320 rx_ring->next_to_use = val;
321
322 /* Force memory writes to complete before letting h/w
323 * know there are new descriptors to fetch. (Only
324 * applicable for weak-ordered memory model archs,
325 * such as IA-64).
326 */
327 wmb();
328 writel(val, rx_ring->tail);
329}
330
331/**
332 * i40e_get_vsi_stats_struct - Get System Network Statistics
333 * @vsi: the VSI we care about
334 *
335 * Returns the address of the device statistics structure.
336 * The statistics are actually updated from the service task.
337 **/
338struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
339{
340 return &vsi->net_stats;
341}
342
343/**
344 * i40e_get_netdev_stats_struct - Get statistics for netdev interface
345 * @netdev: network interface device structure
346 *
347 * Returns the address of the device statistics structure.
348 * The statistics are actually updated from the service task.
349 **/
350static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
351 struct net_device *netdev,
Alexander Duyck980e9b12013-09-28 06:01:03 +0000352 struct rtnl_link_stats64 *stats)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000353{
354 struct i40e_netdev_priv *np = netdev_priv(netdev);
355 struct i40e_vsi *vsi = np->vsi;
Alexander Duyck980e9b12013-09-28 06:01:03 +0000356 struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
357 int i;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000358
David S. Miller143c9052013-12-18 16:42:06 -0500359
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +0000360 if (test_bit(__I40E_DOWN, &vsi->state))
361 return stats;
362
Jesse Brandeburg3c325ce2013-12-14 03:26:45 -0800363 if (!vsi->tx_rings)
364 return stats;
365
Alexander Duyck980e9b12013-09-28 06:01:03 +0000366 rcu_read_lock();
367 for (i = 0; i < vsi->num_queue_pairs; i++) {
368 struct i40e_ring *tx_ring, *rx_ring;
369 u64 bytes, packets;
370 unsigned int start;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000371
Alexander Duyck980e9b12013-09-28 06:01:03 +0000372 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
373 if (!tx_ring)
374 continue;
375
376 do {
377 start = u64_stats_fetch_begin_bh(&tx_ring->syncp);
378 packets = tx_ring->stats.packets;
379 bytes = tx_ring->stats.bytes;
380 } while (u64_stats_fetch_retry_bh(&tx_ring->syncp, start));
381
382 stats->tx_packets += packets;
383 stats->tx_bytes += bytes;
384 rx_ring = &tx_ring[1];
385
386 do {
387 start = u64_stats_fetch_begin_bh(&rx_ring->syncp);
388 packets = rx_ring->stats.packets;
389 bytes = rx_ring->stats.bytes;
390 } while (u64_stats_fetch_retry_bh(&rx_ring->syncp, start));
391
392 stats->rx_packets += packets;
393 stats->rx_bytes += bytes;
394 }
395 rcu_read_unlock();
396
397 /* following stats updated by ixgbe_watchdog_task() */
398 stats->multicast = vsi_stats->multicast;
399 stats->tx_errors = vsi_stats->tx_errors;
400 stats->tx_dropped = vsi_stats->tx_dropped;
401 stats->rx_errors = vsi_stats->rx_errors;
402 stats->rx_crc_errors = vsi_stats->rx_crc_errors;
403 stats->rx_length_errors = vsi_stats->rx_length_errors;
404
405 return stats;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000406}
407
408/**
409 * i40e_vsi_reset_stats - Resets all stats of the given vsi
410 * @vsi: the VSI to have its stats reset
411 **/
412void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
413{
414 struct rtnl_link_stats64 *ns;
415 int i;
416
417 if (!vsi)
418 return;
419
420 ns = i40e_get_vsi_stats_struct(vsi);
421 memset(ns, 0, sizeof(*ns));
422 memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
423 memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
424 memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
Greg Rose8e9dca52013-12-18 13:45:53 +0000425 if (vsi->rx_rings && vsi->rx_rings[0]) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000426 for (i = 0; i < vsi->num_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +0000427 memset(&vsi->rx_rings[i]->stats, 0 ,
428 sizeof(vsi->rx_rings[i]->stats));
429 memset(&vsi->rx_rings[i]->rx_stats, 0 ,
430 sizeof(vsi->rx_rings[i]->rx_stats));
431 memset(&vsi->tx_rings[i]->stats, 0 ,
432 sizeof(vsi->tx_rings[i]->stats));
433 memset(&vsi->tx_rings[i]->tx_stats, 0,
434 sizeof(vsi->tx_rings[i]->tx_stats));
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000435 }
Greg Rose8e9dca52013-12-18 13:45:53 +0000436 }
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000437 vsi->stat_offsets_loaded = false;
438}
439
440/**
441 * i40e_pf_reset_stats - Reset all of the stats for the given pf
442 * @pf: the PF to be reset
443 **/
444void i40e_pf_reset_stats(struct i40e_pf *pf)
445{
446 memset(&pf->stats, 0, sizeof(pf->stats));
447 memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
448 pf->stat_offsets_loaded = false;
449}
450
451/**
452 * i40e_stat_update48 - read and update a 48 bit stat from the chip
453 * @hw: ptr to the hardware info
454 * @hireg: the high 32 bit reg to read
455 * @loreg: the low 32 bit reg to read
456 * @offset_loaded: has the initial offset been loaded yet
457 * @offset: ptr to current offset value
458 * @stat: ptr to the stat
459 *
460 * Since the device stats are not reset at PFReset, they likely will not
461 * be zeroed when the driver starts. We'll save the first values read
462 * and use them as offsets to be subtracted from the raw values in order
463 * to report stats that count from zero. In the process, we also manage
464 * the potential roll-over.
465 **/
466static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
467 bool offset_loaded, u64 *offset, u64 *stat)
468{
469 u64 new_data;
470
471 if (hw->device_id == I40E_QEMU_DEVICE_ID) {
472 new_data = rd32(hw, loreg);
473 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
474 } else {
475 new_data = rd64(hw, loreg);
476 }
477 if (!offset_loaded)
478 *offset = new_data;
479 if (likely(new_data >= *offset))
480 *stat = new_data - *offset;
481 else
482 *stat = (new_data + ((u64)1 << 48)) - *offset;
483 *stat &= 0xFFFFFFFFFFFFULL;
484}
485
486/**
487 * i40e_stat_update32 - read and update a 32 bit stat from the chip
488 * @hw: ptr to the hardware info
489 * @reg: the hw reg to read
490 * @offset_loaded: has the initial offset been loaded yet
491 * @offset: ptr to current offset value
492 * @stat: ptr to the stat
493 **/
494static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
495 bool offset_loaded, u64 *offset, u64 *stat)
496{
497 u32 new_data;
498
499 new_data = rd32(hw, reg);
500 if (!offset_loaded)
501 *offset = new_data;
502 if (likely(new_data >= *offset))
503 *stat = (u32)(new_data - *offset);
504 else
505 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
506}
507
508/**
509 * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
510 * @vsi: the VSI to be updated
511 **/
512void i40e_update_eth_stats(struct i40e_vsi *vsi)
513{
514 int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
515 struct i40e_pf *pf = vsi->back;
516 struct i40e_hw *hw = &pf->hw;
517 struct i40e_eth_stats *oes;
518 struct i40e_eth_stats *es; /* device's eth stats */
519
520 es = &vsi->eth_stats;
521 oes = &vsi->eth_stats_offsets;
522
523 /* Gather up the stats that the hw collects */
524 i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
525 vsi->stat_offsets_loaded,
526 &oes->tx_errors, &es->tx_errors);
527 i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
528 vsi->stat_offsets_loaded,
529 &oes->rx_discards, &es->rx_discards);
530
531 i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
532 I40E_GLV_GORCL(stat_idx),
533 vsi->stat_offsets_loaded,
534 &oes->rx_bytes, &es->rx_bytes);
535 i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
536 I40E_GLV_UPRCL(stat_idx),
537 vsi->stat_offsets_loaded,
538 &oes->rx_unicast, &es->rx_unicast);
539 i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
540 I40E_GLV_MPRCL(stat_idx),
541 vsi->stat_offsets_loaded,
542 &oes->rx_multicast, &es->rx_multicast);
543 i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
544 I40E_GLV_BPRCL(stat_idx),
545 vsi->stat_offsets_loaded,
546 &oes->rx_broadcast, &es->rx_broadcast);
547
548 i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
549 I40E_GLV_GOTCL(stat_idx),
550 vsi->stat_offsets_loaded,
551 &oes->tx_bytes, &es->tx_bytes);
552 i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
553 I40E_GLV_UPTCL(stat_idx),
554 vsi->stat_offsets_loaded,
555 &oes->tx_unicast, &es->tx_unicast);
556 i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
557 I40E_GLV_MPTCL(stat_idx),
558 vsi->stat_offsets_loaded,
559 &oes->tx_multicast, &es->tx_multicast);
560 i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
561 I40E_GLV_BPTCL(stat_idx),
562 vsi->stat_offsets_loaded,
563 &oes->tx_broadcast, &es->tx_broadcast);
564 vsi->stat_offsets_loaded = true;
565}
566
567/**
568 * i40e_update_veb_stats - Update Switch component statistics
569 * @veb: the VEB being updated
570 **/
571static void i40e_update_veb_stats(struct i40e_veb *veb)
572{
573 struct i40e_pf *pf = veb->pf;
574 struct i40e_hw *hw = &pf->hw;
575 struct i40e_eth_stats *oes;
576 struct i40e_eth_stats *es; /* device's eth stats */
577 int idx = 0;
578
579 idx = veb->stats_idx;
580 es = &veb->stats;
581 oes = &veb->stats_offsets;
582
583 /* Gather up the stats that the hw collects */
584 i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
585 veb->stat_offsets_loaded,
586 &oes->tx_discards, &es->tx_discards);
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +0000587 if (hw->revision_id > 0)
588 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
589 veb->stat_offsets_loaded,
590 &oes->rx_unknown_protocol,
591 &es->rx_unknown_protocol);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000592 i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
593 veb->stat_offsets_loaded,
594 &oes->rx_bytes, &es->rx_bytes);
595 i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
596 veb->stat_offsets_loaded,
597 &oes->rx_unicast, &es->rx_unicast);
598 i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
599 veb->stat_offsets_loaded,
600 &oes->rx_multicast, &es->rx_multicast);
601 i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
602 veb->stat_offsets_loaded,
603 &oes->rx_broadcast, &es->rx_broadcast);
604
605 i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
606 veb->stat_offsets_loaded,
607 &oes->tx_bytes, &es->tx_bytes);
608 i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
609 veb->stat_offsets_loaded,
610 &oes->tx_unicast, &es->tx_unicast);
611 i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
612 veb->stat_offsets_loaded,
613 &oes->tx_multicast, &es->tx_multicast);
614 i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
615 veb->stat_offsets_loaded,
616 &oes->tx_broadcast, &es->tx_broadcast);
617 veb->stat_offsets_loaded = true;
618}
619
620/**
621 * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
622 * @pf: the corresponding PF
623 *
624 * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
625 **/
626static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
627{
628 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
629 struct i40e_hw_port_stats *nsd = &pf->stats;
630 struct i40e_hw *hw = &pf->hw;
631 u64 xoff = 0;
632 u16 i, v;
633
634 if ((hw->fc.current_mode != I40E_FC_FULL) &&
635 (hw->fc.current_mode != I40E_FC_RX_PAUSE))
636 return;
637
638 xoff = nsd->link_xoff_rx;
639 i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
640 pf->stat_offsets_loaded,
641 &osd->link_xoff_rx, &nsd->link_xoff_rx);
642
643 /* No new LFC xoff rx */
644 if (!(nsd->link_xoff_rx - xoff))
645 return;
646
647 /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
648 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
649 struct i40e_vsi *vsi = pf->vsi[v];
650
651 if (!vsi)
652 continue;
653
654 for (i = 0; i < vsi->num_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +0000655 struct i40e_ring *ring = vsi->tx_rings[i];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000656 clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
657 }
658 }
659}
660
661/**
662 * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
663 * @pf: the corresponding PF
664 *
665 * Update the Rx XOFF counter (PAUSE frames) in PFC mode
666 **/
667static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
668{
669 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
670 struct i40e_hw_port_stats *nsd = &pf->stats;
671 bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
672 struct i40e_dcbx_config *dcb_cfg;
673 struct i40e_hw *hw = &pf->hw;
674 u16 i, v;
675 u8 tc;
676
677 dcb_cfg = &hw->local_dcbx_config;
678
679 /* See if DCB enabled with PFC TC */
680 if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
681 !(dcb_cfg->pfc.pfcenable)) {
682 i40e_update_link_xoff_rx(pf);
683 return;
684 }
685
686 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
687 u64 prio_xoff = nsd->priority_xoff_rx[i];
688 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
689 pf->stat_offsets_loaded,
690 &osd->priority_xoff_rx[i],
691 &nsd->priority_xoff_rx[i]);
692
693 /* No new PFC xoff rx */
694 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
695 continue;
696 /* Get the TC for given priority */
697 tc = dcb_cfg->etscfg.prioritytable[i];
698 xoff[tc] = true;
699 }
700
701 /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
702 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
703 struct i40e_vsi *vsi = pf->vsi[v];
704
705 if (!vsi)
706 continue;
707
708 for (i = 0; i < vsi->num_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +0000709 struct i40e_ring *ring = vsi->tx_rings[i];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000710
711 tc = ring->dcb_tc;
712 if (xoff[tc])
713 clear_bit(__I40E_HANG_CHECK_ARMED,
714 &ring->state);
715 }
716 }
717}
718
719/**
720 * i40e_update_stats - Update the board statistics counters.
721 * @vsi: the VSI to be updated
722 *
723 * There are a few instances where we store the same stat in a
724 * couple of different structs. This is partly because we have
725 * the netdev stats that need to be filled out, which is slightly
726 * different from the "eth_stats" defined by the chip and used in
727 * VF communications. We sort it all out here in a central place.
728 **/
729void i40e_update_stats(struct i40e_vsi *vsi)
730{
731 struct i40e_pf *pf = vsi->back;
732 struct i40e_hw *hw = &pf->hw;
733 struct rtnl_link_stats64 *ons;
734 struct rtnl_link_stats64 *ns; /* netdev stats */
735 struct i40e_eth_stats *oes;
736 struct i40e_eth_stats *es; /* device's eth stats */
737 u32 tx_restart, tx_busy;
738 u32 rx_page, rx_buf;
739 u64 rx_p, rx_b;
740 u64 tx_p, tx_b;
741 int i;
742 u16 q;
743
744 if (test_bit(__I40E_DOWN, &vsi->state) ||
745 test_bit(__I40E_CONFIG_BUSY, &pf->state))
746 return;
747
748 ns = i40e_get_vsi_stats_struct(vsi);
749 ons = &vsi->net_stats_offsets;
750 es = &vsi->eth_stats;
751 oes = &vsi->eth_stats_offsets;
752
753 /* Gather up the netdev and vsi stats that the driver collects
754 * on the fly during packet processing
755 */
756 rx_b = rx_p = 0;
757 tx_b = tx_p = 0;
758 tx_restart = tx_busy = 0;
759 rx_page = 0;
760 rx_buf = 0;
Alexander Duyck980e9b12013-09-28 06:01:03 +0000761 rcu_read_lock();
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000762 for (q = 0; q < vsi->num_queue_pairs; q++) {
763 struct i40e_ring *p;
Alexander Duyck980e9b12013-09-28 06:01:03 +0000764 u64 bytes, packets;
765 unsigned int start;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000766
Alexander Duyck980e9b12013-09-28 06:01:03 +0000767 /* locate Tx ring */
768 p = ACCESS_ONCE(vsi->tx_rings[q]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000769
Alexander Duyck980e9b12013-09-28 06:01:03 +0000770 do {
771 start = u64_stats_fetch_begin_bh(&p->syncp);
772 packets = p->stats.packets;
773 bytes = p->stats.bytes;
774 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
775 tx_b += bytes;
776 tx_p += packets;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000777 tx_restart += p->tx_stats.restart_queue;
778 tx_busy += p->tx_stats.tx_busy;
Alexander Duyck980e9b12013-09-28 06:01:03 +0000779
780 /* Rx queue is part of the same block as Tx queue */
781 p = &p[1];
782 do {
783 start = u64_stats_fetch_begin_bh(&p->syncp);
784 packets = p->stats.packets;
785 bytes = p->stats.bytes;
786 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
787 rx_b += bytes;
788 rx_p += packets;
789 rx_buf += p->rx_stats.alloc_rx_buff_failed;
790 rx_page += p->rx_stats.alloc_rx_page_failed;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000791 }
Alexander Duyck980e9b12013-09-28 06:01:03 +0000792 rcu_read_unlock();
Jesse Brandeburg41c445f2013-09-11 08:39:46 +0000793 vsi->tx_restart = tx_restart;
794 vsi->tx_busy = tx_busy;
795 vsi->rx_page_failed = rx_page;
796 vsi->rx_buf_failed = rx_buf;
797
798 ns->rx_packets = rx_p;
799 ns->rx_bytes = rx_b;
800 ns->tx_packets = tx_p;
801 ns->tx_bytes = tx_b;
802
803 i40e_update_eth_stats(vsi);
804 /* update netdev stats from eth stats */
805 ons->rx_errors = oes->rx_errors;
806 ns->rx_errors = es->rx_errors;
807 ons->tx_errors = oes->tx_errors;
808 ns->tx_errors = es->tx_errors;
809 ons->multicast = oes->rx_multicast;
810 ns->multicast = es->rx_multicast;
811 ons->tx_dropped = oes->tx_discards;
812 ns->tx_dropped = es->tx_discards;
813
814 /* Get the port data only if this is the main PF VSI */
815 if (vsi == pf->vsi[pf->lan_vsi]) {
816 struct i40e_hw_port_stats *nsd = &pf->stats;
817 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
818
819 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
820 I40E_GLPRT_GORCL(hw->port),
821 pf->stat_offsets_loaded,
822 &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
823 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
824 I40E_GLPRT_GOTCL(hw->port),
825 pf->stat_offsets_loaded,
826 &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
827 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
828 pf->stat_offsets_loaded,
829 &osd->eth.rx_discards,
830 &nsd->eth.rx_discards);
831 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
832 pf->stat_offsets_loaded,
833 &osd->eth.tx_discards,
834 &nsd->eth.tx_discards);
835 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
836 I40E_GLPRT_MPRCL(hw->port),
837 pf->stat_offsets_loaded,
838 &osd->eth.rx_multicast,
839 &nsd->eth.rx_multicast);
840
841 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
842 pf->stat_offsets_loaded,
843 &osd->tx_dropped_link_down,
844 &nsd->tx_dropped_link_down);
845
846 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
847 pf->stat_offsets_loaded,
848 &osd->crc_errors, &nsd->crc_errors);
849 ns->rx_crc_errors = nsd->crc_errors;
850
851 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
852 pf->stat_offsets_loaded,
853 &osd->illegal_bytes, &nsd->illegal_bytes);
854 ns->rx_errors = nsd->crc_errors
855 + nsd->illegal_bytes;
856
857 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
858 pf->stat_offsets_loaded,
859 &osd->mac_local_faults,
860 &nsd->mac_local_faults);
861 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
862 pf->stat_offsets_loaded,
863 &osd->mac_remote_faults,
864 &nsd->mac_remote_faults);
865
866 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
867 pf->stat_offsets_loaded,
868 &osd->rx_length_errors,
869 &nsd->rx_length_errors);
870 ns->rx_length_errors = nsd->rx_length_errors;
871
872 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
873 pf->stat_offsets_loaded,
874 &osd->link_xon_rx, &nsd->link_xon_rx);
875 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
876 pf->stat_offsets_loaded,
877 &osd->link_xon_tx, &nsd->link_xon_tx);
878 i40e_update_prio_xoff_rx(pf); /* handles I40E_GLPRT_LXOFFRXC */
879 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
880 pf->stat_offsets_loaded,
881 &osd->link_xoff_tx, &nsd->link_xoff_tx);
882
883 for (i = 0; i < 8; i++) {
884 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
885 pf->stat_offsets_loaded,
886 &osd->priority_xon_rx[i],
887 &nsd->priority_xon_rx[i]);
888 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
889 pf->stat_offsets_loaded,
890 &osd->priority_xon_tx[i],
891 &nsd->priority_xon_tx[i]);
892 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
893 pf->stat_offsets_loaded,
894 &osd->priority_xoff_tx[i],
895 &nsd->priority_xoff_tx[i]);
896 i40e_stat_update32(hw,
897 I40E_GLPRT_RXON2OFFCNT(hw->port, i),
898 pf->stat_offsets_loaded,
899 &osd->priority_xon_2_xoff[i],
900 &nsd->priority_xon_2_xoff[i]);
901 }
902
903 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
904 I40E_GLPRT_PRC64L(hw->port),
905 pf->stat_offsets_loaded,
906 &osd->rx_size_64, &nsd->rx_size_64);
907 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
908 I40E_GLPRT_PRC127L(hw->port),
909 pf->stat_offsets_loaded,
910 &osd->rx_size_127, &nsd->rx_size_127);
911 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
912 I40E_GLPRT_PRC255L(hw->port),
913 pf->stat_offsets_loaded,
914 &osd->rx_size_255, &nsd->rx_size_255);
915 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
916 I40E_GLPRT_PRC511L(hw->port),
917 pf->stat_offsets_loaded,
918 &osd->rx_size_511, &nsd->rx_size_511);
919 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
920 I40E_GLPRT_PRC1023L(hw->port),
921 pf->stat_offsets_loaded,
922 &osd->rx_size_1023, &nsd->rx_size_1023);
923 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
924 I40E_GLPRT_PRC1522L(hw->port),
925 pf->stat_offsets_loaded,
926 &osd->rx_size_1522, &nsd->rx_size_1522);
927 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
928 I40E_GLPRT_PRC9522L(hw->port),
929 pf->stat_offsets_loaded,
930 &osd->rx_size_big, &nsd->rx_size_big);
931
932 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
933 I40E_GLPRT_PTC64L(hw->port),
934 pf->stat_offsets_loaded,
935 &osd->tx_size_64, &nsd->tx_size_64);
936 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
937 I40E_GLPRT_PTC127L(hw->port),
938 pf->stat_offsets_loaded,
939 &osd->tx_size_127, &nsd->tx_size_127);
940 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
941 I40E_GLPRT_PTC255L(hw->port),
942 pf->stat_offsets_loaded,
943 &osd->tx_size_255, &nsd->tx_size_255);
944 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
945 I40E_GLPRT_PTC511L(hw->port),
946 pf->stat_offsets_loaded,
947 &osd->tx_size_511, &nsd->tx_size_511);
948 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
949 I40E_GLPRT_PTC1023L(hw->port),
950 pf->stat_offsets_loaded,
951 &osd->tx_size_1023, &nsd->tx_size_1023);
952 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
953 I40E_GLPRT_PTC1522L(hw->port),
954 pf->stat_offsets_loaded,
955 &osd->tx_size_1522, &nsd->tx_size_1522);
956 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
957 I40E_GLPRT_PTC9522L(hw->port),
958 pf->stat_offsets_loaded,
959 &osd->tx_size_big, &nsd->tx_size_big);
960
961 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
962 pf->stat_offsets_loaded,
963 &osd->rx_undersize, &nsd->rx_undersize);
964 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
965 pf->stat_offsets_loaded,
966 &osd->rx_fragments, &nsd->rx_fragments);
967 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
968 pf->stat_offsets_loaded,
969 &osd->rx_oversize, &nsd->rx_oversize);
970 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
971 pf->stat_offsets_loaded,
972 &osd->rx_jabber, &nsd->rx_jabber);
973 }
974
975 pf->stat_offsets_loaded = true;
976}
977
978/**
979 * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
980 * @vsi: the VSI to be searched
981 * @macaddr: the MAC address
982 * @vlan: the vlan
983 * @is_vf: make sure its a vf filter, else doesn't matter
984 * @is_netdev: make sure its a netdev filter, else doesn't matter
985 *
986 * Returns ptr to the filter object or NULL
987 **/
988static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
989 u8 *macaddr, s16 vlan,
990 bool is_vf, bool is_netdev)
991{
992 struct i40e_mac_filter *f;
993
994 if (!vsi || !macaddr)
995 return NULL;
996
997 list_for_each_entry(f, &vsi->mac_filter_list, list) {
998 if ((ether_addr_equal(macaddr, f->macaddr)) &&
999 (vlan == f->vlan) &&
1000 (!is_vf || f->is_vf) &&
1001 (!is_netdev || f->is_netdev))
1002 return f;
1003 }
1004 return NULL;
1005}
1006
1007/**
1008 * i40e_find_mac - Find a mac addr in the macvlan filters list
1009 * @vsi: the VSI to be searched
1010 * @macaddr: the MAC address we are searching for
1011 * @is_vf: make sure its a vf filter, else doesn't matter
1012 * @is_netdev: make sure its a netdev filter, else doesn't matter
1013 *
1014 * Returns the first filter with the provided MAC address or NULL if
1015 * MAC address was not found
1016 **/
1017struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1018 bool is_vf, bool is_netdev)
1019{
1020 struct i40e_mac_filter *f;
1021
1022 if (!vsi || !macaddr)
1023 return NULL;
1024
1025 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1026 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1027 (!is_vf || f->is_vf) &&
1028 (!is_netdev || f->is_netdev))
1029 return f;
1030 }
1031 return NULL;
1032}
1033
1034/**
1035 * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1036 * @vsi: the VSI to be searched
1037 *
1038 * Returns true if VSI is in vlan mode or false otherwise
1039 **/
1040bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1041{
1042 struct i40e_mac_filter *f;
1043
1044 /* Only -1 for all the filters denotes not in vlan mode
1045 * so we have to go through all the list in order to make sure
1046 */
1047 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1048 if (f->vlan >= 0)
1049 return true;
1050 }
1051
1052 return false;
1053}
1054
1055/**
1056 * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1057 * @vsi: the VSI to be searched
1058 * @macaddr: the mac address to be filtered
1059 * @is_vf: true if it is a vf
1060 * @is_netdev: true if it is a netdev
1061 *
1062 * Goes through all the macvlan filters and adds a
1063 * macvlan filter for each unique vlan that already exists
1064 *
1065 * Returns first filter found on success, else NULL
1066 **/
1067struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1068 bool is_vf, bool is_netdev)
1069{
1070 struct i40e_mac_filter *f;
1071
1072 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1073 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1074 is_vf, is_netdev)) {
1075 if (!i40e_add_filter(vsi, macaddr, f->vlan,
1076 is_vf, is_netdev))
1077 return NULL;
1078 }
1079 }
1080
1081 return list_first_entry_or_null(&vsi->mac_filter_list,
1082 struct i40e_mac_filter, list);
1083}
1084
1085/**
1086 * i40e_add_filter - Add a mac/vlan filter to the VSI
1087 * @vsi: the VSI to be searched
1088 * @macaddr: the MAC address
1089 * @vlan: the vlan
1090 * @is_vf: make sure its a vf filter, else doesn't matter
1091 * @is_netdev: make sure its a netdev filter, else doesn't matter
1092 *
1093 * Returns ptr to the filter object or NULL when no memory available.
1094 **/
1095struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1096 u8 *macaddr, s16 vlan,
1097 bool is_vf, bool is_netdev)
1098{
1099 struct i40e_mac_filter *f;
1100
1101 if (!vsi || !macaddr)
1102 return NULL;
1103
1104 f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1105 if (!f) {
1106 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1107 if (!f)
1108 goto add_filter_out;
1109
1110 memcpy(f->macaddr, macaddr, ETH_ALEN);
1111 f->vlan = vlan;
1112 f->changed = true;
1113
1114 INIT_LIST_HEAD(&f->list);
1115 list_add(&f->list, &vsi->mac_filter_list);
1116 }
1117
1118 /* increment counter and add a new flag if needed */
1119 if (is_vf) {
1120 if (!f->is_vf) {
1121 f->is_vf = true;
1122 f->counter++;
1123 }
1124 } else if (is_netdev) {
1125 if (!f->is_netdev) {
1126 f->is_netdev = true;
1127 f->counter++;
1128 }
1129 } else {
1130 f->counter++;
1131 }
1132
1133 /* changed tells sync_filters_subtask to
1134 * push the filter down to the firmware
1135 */
1136 if (f->changed) {
1137 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1138 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1139 }
1140
1141add_filter_out:
1142 return f;
1143}
1144
1145/**
1146 * i40e_del_filter - Remove a mac/vlan filter from the VSI
1147 * @vsi: the VSI to be searched
1148 * @macaddr: the MAC address
1149 * @vlan: the vlan
1150 * @is_vf: make sure it's a vf filter, else doesn't matter
1151 * @is_netdev: make sure it's a netdev filter, else doesn't matter
1152 **/
1153void i40e_del_filter(struct i40e_vsi *vsi,
1154 u8 *macaddr, s16 vlan,
1155 bool is_vf, bool is_netdev)
1156{
1157 struct i40e_mac_filter *f;
1158
1159 if (!vsi || !macaddr)
1160 return;
1161
1162 f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1163 if (!f || f->counter == 0)
1164 return;
1165
1166 if (is_vf) {
1167 if (f->is_vf) {
1168 f->is_vf = false;
1169 f->counter--;
1170 }
1171 } else if (is_netdev) {
1172 if (f->is_netdev) {
1173 f->is_netdev = false;
1174 f->counter--;
1175 }
1176 } else {
1177 /* make sure we don't remove a filter in use by vf or netdev */
1178 int min_f = 0;
1179 min_f += (f->is_vf ? 1 : 0);
1180 min_f += (f->is_netdev ? 1 : 0);
1181
1182 if (f->counter > min_f)
1183 f->counter--;
1184 }
1185
1186 /* counter == 0 tells sync_filters_subtask to
1187 * remove the filter from the firmware's list
1188 */
1189 if (f->counter == 0) {
1190 f->changed = true;
1191 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1192 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1193 }
1194}
1195
1196/**
1197 * i40e_set_mac - NDO callback to set mac address
1198 * @netdev: network interface device structure
1199 * @p: pointer to an address structure
1200 *
1201 * Returns 0 on success, negative on failure
1202 **/
1203static int i40e_set_mac(struct net_device *netdev, void *p)
1204{
1205 struct i40e_netdev_priv *np = netdev_priv(netdev);
1206 struct i40e_vsi *vsi = np->vsi;
1207 struct sockaddr *addr = p;
1208 struct i40e_mac_filter *f;
1209
1210 if (!is_valid_ether_addr(addr->sa_data))
1211 return -EADDRNOTAVAIL;
1212
1213 netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1214
1215 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1216 return 0;
1217
Anjali Singhai Jain80f64282013-11-28 06:39:47 +00001218 if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1219 test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1220 return -EADDRNOTAVAIL;
1221
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001222 if (vsi->type == I40E_VSI_MAIN) {
1223 i40e_status ret;
1224 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1225 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1226 addr->sa_data, NULL);
1227 if (ret) {
1228 netdev_info(netdev,
1229 "Addr change for Main VSI failed: %d\n",
1230 ret);
1231 return -EADDRNOTAVAIL;
1232 }
1233
1234 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1235 }
1236
1237 /* In order to be sure to not drop any packets, add the new address
1238 * then delete the old one.
1239 */
1240 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1241 if (!f)
1242 return -ENOMEM;
1243
1244 i40e_sync_vsi_filters(vsi);
1245 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1246 i40e_sync_vsi_filters(vsi);
1247
1248 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1249
1250 return 0;
1251}
1252
1253/**
1254 * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1255 * @vsi: the VSI being setup
1256 * @ctxt: VSI context structure
1257 * @enabled_tc: Enabled TCs bitmap
1258 * @is_add: True if called before Add VSI
1259 *
1260 * Setup VSI queue mapping for enabled traffic classes.
1261 **/
1262static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1263 struct i40e_vsi_context *ctxt,
1264 u8 enabled_tc,
1265 bool is_add)
1266{
1267 struct i40e_pf *pf = vsi->back;
1268 u16 sections = 0;
1269 u8 netdev_tc = 0;
1270 u16 numtc = 0;
1271 u16 qcount;
1272 u8 offset;
1273 u16 qmap;
1274 int i;
1275
1276 sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1277 offset = 0;
1278
1279 if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1280 /* Find numtc from enabled TC bitmap */
1281 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1282 if (enabled_tc & (1 << i)) /* TC is enabled */
1283 numtc++;
1284 }
1285 if (!numtc) {
1286 dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1287 numtc = 1;
1288 }
1289 } else {
1290 /* At least TC0 is enabled in case of non-DCB case */
1291 numtc = 1;
1292 }
1293
1294 vsi->tc_config.numtc = numtc;
1295 vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1296
1297 /* Setup queue offset/count for all TCs for given VSI */
1298 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1299 /* See if the given TC is enabled for the given VSI */
1300 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1301 int pow, num_qps;
1302
1303 vsi->tc_config.tc_info[i].qoffset = offset;
1304 switch (vsi->type) {
1305 case I40E_VSI_MAIN:
1306 if (i == 0)
1307 qcount = pf->rss_size;
1308 else
1309 qcount = pf->num_tc_qps;
1310 vsi->tc_config.tc_info[i].qcount = qcount;
1311 break;
1312 case I40E_VSI_FDIR:
1313 case I40E_VSI_SRIOV:
1314 case I40E_VSI_VMDQ2:
1315 default:
1316 qcount = vsi->alloc_queue_pairs;
1317 vsi->tc_config.tc_info[i].qcount = qcount;
1318 WARN_ON(i != 0);
1319 break;
1320 }
1321
1322 /* find the power-of-2 of the number of queue pairs */
1323 num_qps = vsi->tc_config.tc_info[i].qcount;
1324 pow = 0;
1325 while (num_qps &&
1326 ((1 << pow) < vsi->tc_config.tc_info[i].qcount)) {
1327 pow++;
1328 num_qps >>= 1;
1329 }
1330
1331 vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1332 qmap =
1333 (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1334 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1335
1336 offset += vsi->tc_config.tc_info[i].qcount;
1337 } else {
1338 /* TC is not enabled so set the offset to
1339 * default queue and allocate one queue
1340 * for the given TC.
1341 */
1342 vsi->tc_config.tc_info[i].qoffset = 0;
1343 vsi->tc_config.tc_info[i].qcount = 1;
1344 vsi->tc_config.tc_info[i].netdev_tc = 0;
1345
1346 qmap = 0;
1347 }
1348 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1349 }
1350
1351 /* Set actual Tx/Rx queue pairs */
1352 vsi->num_queue_pairs = offset;
1353
1354 /* Scheduler section valid can only be set for ADD VSI */
1355 if (is_add) {
1356 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1357
1358 ctxt->info.up_enable_bits = enabled_tc;
1359 }
1360 if (vsi->type == I40E_VSI_SRIOV) {
1361 ctxt->info.mapping_flags |=
1362 cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1363 for (i = 0; i < vsi->num_queue_pairs; i++)
1364 ctxt->info.queue_mapping[i] =
1365 cpu_to_le16(vsi->base_queue + i);
1366 } else {
1367 ctxt->info.mapping_flags |=
1368 cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1369 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1370 }
1371 ctxt->info.valid_sections |= cpu_to_le16(sections);
1372}
1373
1374/**
1375 * i40e_set_rx_mode - NDO callback to set the netdev filters
1376 * @netdev: network interface device structure
1377 **/
1378static void i40e_set_rx_mode(struct net_device *netdev)
1379{
1380 struct i40e_netdev_priv *np = netdev_priv(netdev);
1381 struct i40e_mac_filter *f, *ftmp;
1382 struct i40e_vsi *vsi = np->vsi;
1383 struct netdev_hw_addr *uca;
1384 struct netdev_hw_addr *mca;
1385 struct netdev_hw_addr *ha;
1386
1387 /* add addr if not already in the filter list */
1388 netdev_for_each_uc_addr(uca, netdev) {
1389 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1390 if (i40e_is_vsi_in_vlan(vsi))
1391 i40e_put_mac_in_vlan(vsi, uca->addr,
1392 false, true);
1393 else
1394 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1395 false, true);
1396 }
1397 }
1398
1399 netdev_for_each_mc_addr(mca, netdev) {
1400 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1401 if (i40e_is_vsi_in_vlan(vsi))
1402 i40e_put_mac_in_vlan(vsi, mca->addr,
1403 false, true);
1404 else
1405 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1406 false, true);
1407 }
1408 }
1409
1410 /* remove filter if not in netdev list */
1411 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1412 bool found = false;
1413
1414 if (!f->is_netdev)
1415 continue;
1416
1417 if (is_multicast_ether_addr(f->macaddr)) {
1418 netdev_for_each_mc_addr(mca, netdev) {
1419 if (ether_addr_equal(mca->addr, f->macaddr)) {
1420 found = true;
1421 break;
1422 }
1423 }
1424 } else {
1425 netdev_for_each_uc_addr(uca, netdev) {
1426 if (ether_addr_equal(uca->addr, f->macaddr)) {
1427 found = true;
1428 break;
1429 }
1430 }
1431
1432 for_each_dev_addr(netdev, ha) {
1433 if (ether_addr_equal(ha->addr, f->macaddr)) {
1434 found = true;
1435 break;
1436 }
1437 }
1438 }
1439 if (!found)
1440 i40e_del_filter(
1441 vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1442 }
1443
1444 /* check for other flag changes */
1445 if (vsi->current_netdev_flags != vsi->netdev->flags) {
1446 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1447 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1448 }
1449}
1450
1451/**
1452 * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1453 * @vsi: ptr to the VSI
1454 *
1455 * Push any outstanding VSI filter changes through the AdminQ.
1456 *
1457 * Returns 0 or error value
1458 **/
1459int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1460{
1461 struct i40e_mac_filter *f, *ftmp;
1462 bool promisc_forced_on = false;
1463 bool add_happened = false;
1464 int filter_list_len = 0;
1465 u32 changed_flags = 0;
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001466 i40e_status aq_ret = 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001467 struct i40e_pf *pf;
1468 int num_add = 0;
1469 int num_del = 0;
1470 u16 cmd_flags;
1471
1472 /* empty array typed pointers, kcalloc later */
1473 struct i40e_aqc_add_macvlan_element_data *add_list;
1474 struct i40e_aqc_remove_macvlan_element_data *del_list;
1475
1476 while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1477 usleep_range(1000, 2000);
1478 pf = vsi->back;
1479
1480 if (vsi->netdev) {
1481 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1482 vsi->current_netdev_flags = vsi->netdev->flags;
1483 }
1484
1485 if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1486 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1487
1488 filter_list_len = pf->hw.aq.asq_buf_size /
1489 sizeof(struct i40e_aqc_remove_macvlan_element_data);
1490 del_list = kcalloc(filter_list_len,
1491 sizeof(struct i40e_aqc_remove_macvlan_element_data),
1492 GFP_KERNEL);
1493 if (!del_list)
1494 return -ENOMEM;
1495
1496 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1497 if (!f->changed)
1498 continue;
1499
1500 if (f->counter != 0)
1501 continue;
1502 f->changed = false;
1503 cmd_flags = 0;
1504
1505 /* add to delete list */
1506 memcpy(del_list[num_del].mac_addr,
1507 f->macaddr, ETH_ALEN);
1508 del_list[num_del].vlan_tag =
1509 cpu_to_le16((u16)(f->vlan ==
1510 I40E_VLAN_ANY ? 0 : f->vlan));
1511
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001512 cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1513 del_list[num_del].flags = cmd_flags;
1514 num_del++;
1515
1516 /* unlink from filter list */
1517 list_del(&f->list);
1518 kfree(f);
1519
1520 /* flush a full buffer */
1521 if (num_del == filter_list_len) {
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001522 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001523 vsi->seid, del_list, num_del,
1524 NULL);
1525 num_del = 0;
1526 memset(del_list, 0, sizeof(*del_list));
1527
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001528 if (aq_ret)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001529 dev_info(&pf->pdev->dev,
1530 "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001531 aq_ret,
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001532 pf->hw.aq.asq_last_status);
1533 }
1534 }
1535 if (num_del) {
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001536 aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001537 del_list, num_del, NULL);
1538 num_del = 0;
1539
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001540 if (aq_ret)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001541 dev_info(&pf->pdev->dev,
1542 "ignoring delete macvlan error, err %d, aq_err %d\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001543 aq_ret, pf->hw.aq.asq_last_status);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001544 }
1545
1546 kfree(del_list);
1547 del_list = NULL;
1548
1549 /* do all the adds now */
1550 filter_list_len = pf->hw.aq.asq_buf_size /
1551 sizeof(struct i40e_aqc_add_macvlan_element_data),
1552 add_list = kcalloc(filter_list_len,
1553 sizeof(struct i40e_aqc_add_macvlan_element_data),
1554 GFP_KERNEL);
1555 if (!add_list)
1556 return -ENOMEM;
1557
1558 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1559 if (!f->changed)
1560 continue;
1561
1562 if (f->counter == 0)
1563 continue;
1564 f->changed = false;
1565 add_happened = true;
1566 cmd_flags = 0;
1567
1568 /* add to add array */
1569 memcpy(add_list[num_add].mac_addr,
1570 f->macaddr, ETH_ALEN);
1571 add_list[num_add].vlan_tag =
1572 cpu_to_le16(
1573 (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1574 add_list[num_add].queue_number = 0;
1575
1576 cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001577 add_list[num_add].flags = cpu_to_le16(cmd_flags);
1578 num_add++;
1579
1580 /* flush a full buffer */
1581 if (num_add == filter_list_len) {
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001582 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1583 add_list, num_add,
1584 NULL);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001585 num_add = 0;
1586
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001587 if (aq_ret)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001588 break;
1589 memset(add_list, 0, sizeof(*add_list));
1590 }
1591 }
1592 if (num_add) {
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001593 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1594 add_list, num_add, NULL);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001595 num_add = 0;
1596 }
1597 kfree(add_list);
1598 add_list = NULL;
1599
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001600 if (add_happened && (!aq_ret)) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001601 /* do nothing */;
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001602 } else if (add_happened && (aq_ret)) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001603 dev_info(&pf->pdev->dev,
1604 "add filter failed, err %d, aq_err %d\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001605 aq_ret, pf->hw.aq.asq_last_status);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001606 if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1607 !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1608 &vsi->state)) {
1609 promisc_forced_on = true;
1610 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1611 &vsi->state);
1612 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1613 }
1614 }
1615 }
1616
1617 /* check for changes in promiscuous modes */
1618 if (changed_flags & IFF_ALLMULTI) {
1619 bool cur_multipromisc;
1620 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001621 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1622 vsi->seid,
1623 cur_multipromisc,
1624 NULL);
1625 if (aq_ret)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001626 dev_info(&pf->pdev->dev,
1627 "set multi promisc failed, err %d, aq_err %d\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001628 aq_ret, pf->hw.aq.asq_last_status);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001629 }
1630 if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1631 bool cur_promisc;
1632 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1633 test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1634 &vsi->state));
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001635 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1636 vsi->seid,
1637 cur_promisc, NULL);
1638 if (aq_ret)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001639 dev_info(&pf->pdev->dev,
1640 "set uni promisc failed, err %d, aq_err %d\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00001641 aq_ret, pf->hw.aq.asq_last_status);
Greg Rose1a103702013-11-28 06:42:39 +00001642 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1643 vsi->seid,
1644 cur_promisc, NULL);
1645 if (aq_ret)
1646 dev_info(&pf->pdev->dev,
1647 "set brdcast promisc failed, err %d, aq_err %d\n",
1648 aq_ret, pf->hw.aq.asq_last_status);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001649 }
1650
1651 clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1652 return 0;
1653}
1654
1655/**
1656 * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1657 * @pf: board private structure
1658 **/
1659static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1660{
1661 int v;
1662
1663 if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1664 return;
1665 pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1666
1667 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1668 if (pf->vsi[v] &&
1669 (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1670 i40e_sync_vsi_filters(pf->vsi[v]);
1671 }
1672}
1673
1674/**
1675 * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1676 * @netdev: network interface device structure
1677 * @new_mtu: new value for maximum frame size
1678 *
1679 * Returns 0 on success, negative on failure
1680 **/
1681static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1682{
1683 struct i40e_netdev_priv *np = netdev_priv(netdev);
1684 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1685 struct i40e_vsi *vsi = np->vsi;
1686
1687 /* MTU < 68 is an error and causes problems on some kernels */
1688 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1689 return -EINVAL;
1690
1691 netdev_info(netdev, "changing MTU from %d to %d\n",
1692 netdev->mtu, new_mtu);
1693 netdev->mtu = new_mtu;
1694 if (netif_running(netdev))
1695 i40e_vsi_reinit_locked(vsi);
1696
1697 return 0;
1698}
1699
1700/**
1701 * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1702 * @vsi: the vsi being adjusted
1703 **/
1704void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1705{
1706 struct i40e_vsi_context ctxt;
1707 i40e_status ret;
1708
1709 if ((vsi->info.valid_sections &
1710 cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1711 ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1712 return; /* already enabled */
1713
1714 vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1715 vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1716 I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1717
1718 ctxt.seid = vsi->seid;
1719 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1720 ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1721 if (ret) {
1722 dev_info(&vsi->back->pdev->dev,
1723 "%s: update vsi failed, aq_err=%d\n",
1724 __func__, vsi->back->hw.aq.asq_last_status);
1725 }
1726}
1727
1728/**
1729 * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1730 * @vsi: the vsi being adjusted
1731 **/
1732void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1733{
1734 struct i40e_vsi_context ctxt;
1735 i40e_status ret;
1736
1737 if ((vsi->info.valid_sections &
1738 cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1739 ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1740 I40E_AQ_VSI_PVLAN_EMOD_MASK))
1741 return; /* already disabled */
1742
1743 vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1744 vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1745 I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1746
1747 ctxt.seid = vsi->seid;
1748 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1749 ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1750 if (ret) {
1751 dev_info(&vsi->back->pdev->dev,
1752 "%s: update vsi failed, aq_err=%d\n",
1753 __func__, vsi->back->hw.aq.asq_last_status);
1754 }
1755}
1756
1757/**
1758 * i40e_vlan_rx_register - Setup or shutdown vlan offload
1759 * @netdev: network interface to be adjusted
1760 * @features: netdev features to test if VLAN offload is enabled or not
1761 **/
1762static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1763{
1764 struct i40e_netdev_priv *np = netdev_priv(netdev);
1765 struct i40e_vsi *vsi = np->vsi;
1766
1767 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1768 i40e_vlan_stripping_enable(vsi);
1769 else
1770 i40e_vlan_stripping_disable(vsi);
1771}
1772
1773/**
1774 * i40e_vsi_add_vlan - Add vsi membership for given vlan
1775 * @vsi: the vsi being configured
1776 * @vid: vlan id to be added (0 = untagged only , -1 = any)
1777 **/
1778int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1779{
1780 struct i40e_mac_filter *f, *add_f;
1781 bool is_netdev, is_vf;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001782
1783 is_vf = (vsi->type == I40E_VSI_SRIOV);
1784 is_netdev = !!(vsi->netdev);
1785
1786 if (is_netdev) {
1787 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1788 is_vf, is_netdev);
1789 if (!add_f) {
1790 dev_info(&vsi->back->pdev->dev,
1791 "Could not add vlan filter %d for %pM\n",
1792 vid, vsi->netdev->dev_addr);
1793 return -ENOMEM;
1794 }
1795 }
1796
1797 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1798 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1799 if (!add_f) {
1800 dev_info(&vsi->back->pdev->dev,
1801 "Could not add vlan filter %d for %pM\n",
1802 vid, f->macaddr);
1803 return -ENOMEM;
1804 }
1805 }
1806
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001807 /* Now if we add a vlan tag, make sure to check if it is the first
1808 * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1809 * with 0, so we now accept untagged and specified tagged traffic
1810 * (and not any taged and untagged)
1811 */
1812 if (vid > 0) {
1813 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1814 I40E_VLAN_ANY,
1815 is_vf, is_netdev)) {
1816 i40e_del_filter(vsi, vsi->netdev->dev_addr,
1817 I40E_VLAN_ANY, is_vf, is_netdev);
1818 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1819 is_vf, is_netdev);
1820 if (!add_f) {
1821 dev_info(&vsi->back->pdev->dev,
1822 "Could not add filter 0 for %pM\n",
1823 vsi->netdev->dev_addr);
1824 return -ENOMEM;
1825 }
1826 }
1827
1828 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1829 if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1830 is_vf, is_netdev)) {
1831 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1832 is_vf, is_netdev);
1833 add_f = i40e_add_filter(vsi, f->macaddr,
1834 0, is_vf, is_netdev);
1835 if (!add_f) {
1836 dev_info(&vsi->back->pdev->dev,
1837 "Could not add filter 0 for %pM\n",
1838 f->macaddr);
1839 return -ENOMEM;
1840 }
1841 }
1842 }
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001843 }
1844
Anjali Singhai Jain80f64282013-11-28 06:39:47 +00001845 if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1846 test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1847 return 0;
1848
1849 return i40e_sync_vsi_filters(vsi);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001850}
1851
1852/**
1853 * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1854 * @vsi: the vsi being configured
1855 * @vid: vlan id to be removed (0 = untagged only , -1 = any)
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001856 *
1857 * Return: 0 on success or negative otherwise
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001858 **/
1859int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1860{
1861 struct net_device *netdev = vsi->netdev;
1862 struct i40e_mac_filter *f, *add_f;
1863 bool is_vf, is_netdev;
1864 int filter_count = 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001865
1866 is_vf = (vsi->type == I40E_VSI_SRIOV);
1867 is_netdev = !!(netdev);
1868
1869 if (is_netdev)
1870 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1871
1872 list_for_each_entry(f, &vsi->mac_filter_list, list)
1873 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1874
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001875 /* go through all the filters for this VSI and if there is only
1876 * vid == 0 it means there are no other filters, so vid 0 must
1877 * be replaced with -1. This signifies that we should from now
1878 * on accept any traffic (with any tag present, or untagged)
1879 */
1880 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1881 if (is_netdev) {
1882 if (f->vlan &&
1883 ether_addr_equal(netdev->dev_addr, f->macaddr))
1884 filter_count++;
1885 }
1886
1887 if (f->vlan)
1888 filter_count++;
1889 }
1890
1891 if (!filter_count && is_netdev) {
1892 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1893 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1894 is_vf, is_netdev);
1895 if (!f) {
1896 dev_info(&vsi->back->pdev->dev,
1897 "Could not add filter %d for %pM\n",
1898 I40E_VLAN_ANY, netdev->dev_addr);
1899 return -ENOMEM;
1900 }
1901 }
1902
1903 if (!filter_count) {
1904 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1905 i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1906 add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1907 is_vf, is_netdev);
1908 if (!add_f) {
1909 dev_info(&vsi->back->pdev->dev,
1910 "Could not add filter %d for %pM\n",
1911 I40E_VLAN_ANY, f->macaddr);
1912 return -ENOMEM;
1913 }
1914 }
1915 }
1916
Anjali Singhai Jain80f64282013-11-28 06:39:47 +00001917 if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1918 test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1919 return 0;
1920
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001921 return i40e_sync_vsi_filters(vsi);
1922}
1923
1924/**
1925 * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1926 * @netdev: network interface to be adjusted
1927 * @vid: vlan id to be added
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001928 *
1929 * net_device_ops implementation for adding vlan ids
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001930 **/
1931static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1932 __always_unused __be16 proto, u16 vid)
1933{
1934 struct i40e_netdev_priv *np = netdev_priv(netdev);
1935 struct i40e_vsi *vsi = np->vsi;
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001936 int ret = 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001937
1938 if (vid > 4095)
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001939 return -EINVAL;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001940
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001941 netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1942
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001943 /* If the network stack called us with vid = 0, we should
1944 * indicate to i40e_vsi_add_vlan() that we want to receive
1945 * any traffic (i.e. with any vlan tag, or untagged)
1946 */
1947 ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY);
1948
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001949 if (!ret && (vid < VLAN_N_VID))
1950 set_bit(vid, vsi->active_vlans);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001951
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001952 return ret;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001953}
1954
1955/**
1956 * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
1957 * @netdev: network interface to be adjusted
1958 * @vid: vlan id to be removed
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001959 *
1960 * net_device_ops implementation for adding vlan ids
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001961 **/
1962static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
1963 __always_unused __be16 proto, u16 vid)
1964{
1965 struct i40e_netdev_priv *np = netdev_priv(netdev);
1966 struct i40e_vsi *vsi = np->vsi;
1967
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001968 netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
1969
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001970 /* return code is ignored as there is nothing a user
1971 * can do about failure to remove and a log message was
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001972 * already printed from the other function
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001973 */
1974 i40e_vsi_kill_vlan(vsi, vid);
1975
1976 clear_bit(vid, vsi->active_vlans);
Jesse Brandeburg078b5872013-09-25 23:41:14 +00001977
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00001978 return 0;
1979}
1980
1981/**
1982 * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
1983 * @vsi: the vsi being brought back up
1984 **/
1985static void i40e_restore_vlan(struct i40e_vsi *vsi)
1986{
1987 u16 vid;
1988
1989 if (!vsi->netdev)
1990 return;
1991
1992 i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
1993
1994 for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
1995 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
1996 vid);
1997}
1998
1999/**
2000 * i40e_vsi_add_pvid - Add pvid for the VSI
2001 * @vsi: the vsi being adjusted
2002 * @vid: the vlan id to set as a PVID
2003 **/
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00002004int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002005{
2006 struct i40e_vsi_context ctxt;
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00002007 i40e_status aq_ret;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002008
2009 vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2010 vsi->info.pvid = cpu_to_le16(vid);
Greg Rose6c12fcb2013-11-28 06:39:34 +00002011 vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2012 I40E_AQ_VSI_PVLAN_INSERT_PVID |
Greg Roseb774c7d2013-11-28 06:39:44 +00002013 I40E_AQ_VSI_PVLAN_EMOD_STR;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002014
2015 ctxt.seid = vsi->seid;
2016 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00002017 aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2018 if (aq_ret) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002019 dev_info(&vsi->back->pdev->dev,
2020 "%s: update vsi failed, aq_err=%d\n",
2021 __func__, vsi->back->hw.aq.asq_last_status);
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00002022 return -ENOENT;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002023 }
2024
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00002025 return 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002026}
2027
2028/**
2029 * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2030 * @vsi: the vsi being adjusted
2031 *
2032 * Just use the vlan_rx_register() service to put it back to normal
2033 **/
2034void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2035{
Greg Rose6c12fcb2013-11-28 06:39:34 +00002036 i40e_vlan_stripping_disable(vsi);
2037
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002038 vsi->info.pvid = 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002039}
2040
2041/**
2042 * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2043 * @vsi: ptr to the VSI
2044 *
2045 * If this function returns with an error, then it's possible one or
2046 * more of the rings is populated (while the rest are not). It is the
2047 * callers duty to clean those orphaned rings.
2048 *
2049 * Return 0 on success, negative on failure
2050 **/
2051static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2052{
2053 int i, err = 0;
2054
2055 for (i = 0; i < vsi->num_queue_pairs && !err; i++)
Alexander Duyck9f65e152013-09-28 06:00:58 +00002056 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002057
2058 return err;
2059}
2060
2061/**
2062 * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2063 * @vsi: ptr to the VSI
2064 *
2065 * Free VSI's transmit software resources
2066 **/
2067static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2068{
2069 int i;
2070
Greg Rose8e9dca52013-12-18 13:45:53 +00002071 if (!vsi->tx_rings)
2072 return;
2073
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002074 for (i = 0; i < vsi->num_queue_pairs; i++)
Greg Rose8e9dca52013-12-18 13:45:53 +00002075 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
Alexander Duyck9f65e152013-09-28 06:00:58 +00002076 i40e_free_tx_resources(vsi->tx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002077}
2078
2079/**
2080 * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2081 * @vsi: ptr to the VSI
2082 *
2083 * If this function returns with an error, then it's possible one or
2084 * more of the rings is populated (while the rest are not). It is the
2085 * callers duty to clean those orphaned rings.
2086 *
2087 * Return 0 on success, negative on failure
2088 **/
2089static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2090{
2091 int i, err = 0;
2092
2093 for (i = 0; i < vsi->num_queue_pairs && !err; i++)
Alexander Duyck9f65e152013-09-28 06:00:58 +00002094 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002095 return err;
2096}
2097
2098/**
2099 * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2100 * @vsi: ptr to the VSI
2101 *
2102 * Free all receive software resources
2103 **/
2104static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2105{
2106 int i;
2107
Greg Rose8e9dca52013-12-18 13:45:53 +00002108 if (!vsi->rx_rings)
2109 return;
2110
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002111 for (i = 0; i < vsi->num_queue_pairs; i++)
Greg Rose8e9dca52013-12-18 13:45:53 +00002112 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
Alexander Duyck9f65e152013-09-28 06:00:58 +00002113 i40e_free_rx_resources(vsi->rx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002114}
2115
2116/**
2117 * i40e_configure_tx_ring - Configure a transmit ring context and rest
2118 * @ring: The Tx ring to configure
2119 *
2120 * Configure the Tx descriptor ring in the HMC context.
2121 **/
2122static int i40e_configure_tx_ring(struct i40e_ring *ring)
2123{
2124 struct i40e_vsi *vsi = ring->vsi;
2125 u16 pf_q = vsi->base_queue + ring->queue_index;
2126 struct i40e_hw *hw = &vsi->back->hw;
2127 struct i40e_hmc_obj_txq tx_ctx;
2128 i40e_status err = 0;
2129 u32 qtx_ctl = 0;
2130
2131 /* some ATR related tx ring init */
2132 if (vsi->back->flags & I40E_FLAG_FDIR_ATR_ENABLED) {
2133 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2134 ring->atr_count = 0;
2135 } else {
2136 ring->atr_sample_rate = 0;
2137 }
2138
2139 /* initialize XPS */
2140 if (ring->q_vector && ring->netdev &&
2141 !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2142 netif_set_xps_queue(ring->netdev,
2143 &ring->q_vector->affinity_mask,
2144 ring->queue_index);
2145
2146 /* clear the context structure first */
2147 memset(&tx_ctx, 0, sizeof(tx_ctx));
2148
2149 tx_ctx.new_context = 1;
2150 tx_ctx.base = (ring->dma / 128);
2151 tx_ctx.qlen = ring->count;
2152 tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FDIR_ENABLED |
2153 I40E_FLAG_FDIR_ATR_ENABLED));
2154
2155 /* As part of VSI creation/update, FW allocates certain
2156 * Tx arbitration queue sets for each TC enabled for
2157 * the VSI. The FW returns the handles to these queue
2158 * sets as part of the response buffer to Add VSI,
2159 * Update VSI, etc. AQ commands. It is expected that
2160 * these queue set handles be associated with the Tx
2161 * queues by the driver as part of the TX queue context
2162 * initialization. This has to be done regardless of
2163 * DCB as by default everything is mapped to TC0.
2164 */
2165 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2166 tx_ctx.rdylist_act = 0;
2167
2168 /* clear the context in the HMC */
2169 err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2170 if (err) {
2171 dev_info(&vsi->back->pdev->dev,
2172 "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2173 ring->queue_index, pf_q, err);
2174 return -ENOMEM;
2175 }
2176
2177 /* set the context in the HMC */
2178 err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2179 if (err) {
2180 dev_info(&vsi->back->pdev->dev,
2181 "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2182 ring->queue_index, pf_q, err);
2183 return -ENOMEM;
2184 }
2185
2186 /* Now associate this queue with this PCI function */
2187 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
Shannon Nelson13fd9772013-09-28 07:14:19 +00002188 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2189 I40E_QTX_CTL_PF_INDX_MASK);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002190 wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2191 i40e_flush(hw);
2192
2193 clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2194
2195 /* cache tail off for easier writes later */
2196 ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2197
2198 return 0;
2199}
2200
2201/**
2202 * i40e_configure_rx_ring - Configure a receive ring context
2203 * @ring: The Rx ring to configure
2204 *
2205 * Configure the Rx descriptor ring in the HMC context.
2206 **/
2207static int i40e_configure_rx_ring(struct i40e_ring *ring)
2208{
2209 struct i40e_vsi *vsi = ring->vsi;
2210 u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2211 u16 pf_q = vsi->base_queue + ring->queue_index;
2212 struct i40e_hw *hw = &vsi->back->hw;
2213 struct i40e_hmc_obj_rxq rx_ctx;
2214 i40e_status err = 0;
2215
2216 ring->state = 0;
2217
2218 /* clear the context structure first */
2219 memset(&rx_ctx, 0, sizeof(rx_ctx));
2220
2221 ring->rx_buf_len = vsi->rx_buf_len;
2222 ring->rx_hdr_len = vsi->rx_hdr_len;
2223
2224 rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2225 rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2226
2227 rx_ctx.base = (ring->dma / 128);
2228 rx_ctx.qlen = ring->count;
2229
2230 if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2231 set_ring_16byte_desc_enabled(ring);
2232 rx_ctx.dsize = 0;
2233 } else {
2234 rx_ctx.dsize = 1;
2235 }
2236
2237 rx_ctx.dtype = vsi->dtype;
2238 if (vsi->dtype) {
2239 set_ring_ps_enabled(ring);
2240 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
2241 I40E_RX_SPLIT_IP |
2242 I40E_RX_SPLIT_TCP_UDP |
2243 I40E_RX_SPLIT_SCTP;
2244 } else {
2245 rx_ctx.hsplit_0 = 0;
2246 }
2247
2248 rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2249 (chain_len * ring->rx_buf_len));
2250 rx_ctx.tphrdesc_ena = 1;
2251 rx_ctx.tphwdesc_ena = 1;
2252 rx_ctx.tphdata_ena = 1;
2253 rx_ctx.tphhead_ena = 1;
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00002254 if (hw->revision_id == 0)
2255 rx_ctx.lrxqthresh = 0;
2256 else
2257 rx_ctx.lrxqthresh = 2;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002258 rx_ctx.crcstrip = 1;
2259 rx_ctx.l2tsel = 1;
2260 rx_ctx.showiv = 1;
2261
2262 /* clear the context in the HMC */
2263 err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2264 if (err) {
2265 dev_info(&vsi->back->pdev->dev,
2266 "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2267 ring->queue_index, pf_q, err);
2268 return -ENOMEM;
2269 }
2270
2271 /* set the context in the HMC */
2272 err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2273 if (err) {
2274 dev_info(&vsi->back->pdev->dev,
2275 "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2276 ring->queue_index, pf_q, err);
2277 return -ENOMEM;
2278 }
2279
2280 /* cache tail for quicker writes, and clear the reg before use */
2281 ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2282 writel(0, ring->tail);
2283
2284 i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2285
2286 return 0;
2287}
2288
2289/**
2290 * i40e_vsi_configure_tx - Configure the VSI for Tx
2291 * @vsi: VSI structure describing this set of rings and resources
2292 *
2293 * Configure the Tx VSI for operation.
2294 **/
2295static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2296{
2297 int err = 0;
2298 u16 i;
2299
Alexander Duyck9f65e152013-09-28 06:00:58 +00002300 for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2301 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002302
2303 return err;
2304}
2305
2306/**
2307 * i40e_vsi_configure_rx - Configure the VSI for Rx
2308 * @vsi: the VSI being configured
2309 *
2310 * Configure the Rx VSI for operation.
2311 **/
2312static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2313{
2314 int err = 0;
2315 u16 i;
2316
2317 if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2318 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2319 + ETH_FCS_LEN + VLAN_HLEN;
2320 else
2321 vsi->max_frame = I40E_RXBUFFER_2048;
2322
2323 /* figure out correct receive buffer length */
2324 switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2325 I40E_FLAG_RX_PS_ENABLED)) {
2326 case I40E_FLAG_RX_1BUF_ENABLED:
2327 vsi->rx_hdr_len = 0;
2328 vsi->rx_buf_len = vsi->max_frame;
2329 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2330 break;
2331 case I40E_FLAG_RX_PS_ENABLED:
2332 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2333 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2334 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2335 break;
2336 default:
2337 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2338 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2339 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2340 break;
2341 }
2342
2343 /* round up for the chip's needs */
2344 vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2345 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2346 vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2347 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2348
2349 /* set up individual rings */
2350 for (i = 0; i < vsi->num_queue_pairs && !err; i++)
Alexander Duyck9f65e152013-09-28 06:00:58 +00002351 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002352
2353 return err;
2354}
2355
2356/**
2357 * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2358 * @vsi: ptr to the VSI
2359 **/
2360static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2361{
2362 u16 qoffset, qcount;
2363 int i, n;
2364
2365 if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2366 return;
2367
2368 for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2369 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2370 continue;
2371
2372 qoffset = vsi->tc_config.tc_info[n].qoffset;
2373 qcount = vsi->tc_config.tc_info[n].qcount;
2374 for (i = qoffset; i < (qoffset + qcount); i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +00002375 struct i40e_ring *rx_ring = vsi->rx_rings[i];
2376 struct i40e_ring *tx_ring = vsi->tx_rings[i];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002377 rx_ring->dcb_tc = n;
2378 tx_ring->dcb_tc = n;
2379 }
2380 }
2381}
2382
2383/**
2384 * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2385 * @vsi: ptr to the VSI
2386 **/
2387static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2388{
2389 if (vsi->netdev)
2390 i40e_set_rx_mode(vsi->netdev);
2391}
2392
2393/**
2394 * i40e_vsi_configure - Set up the VSI for action
2395 * @vsi: the VSI being configured
2396 **/
2397static int i40e_vsi_configure(struct i40e_vsi *vsi)
2398{
2399 int err;
2400
2401 i40e_set_vsi_rx_mode(vsi);
2402 i40e_restore_vlan(vsi);
2403 i40e_vsi_config_dcb_rings(vsi);
2404 err = i40e_vsi_configure_tx(vsi);
2405 if (!err)
2406 err = i40e_vsi_configure_rx(vsi);
2407
2408 return err;
2409}
2410
2411/**
2412 * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2413 * @vsi: the VSI being configured
2414 **/
2415static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2416{
2417 struct i40e_pf *pf = vsi->back;
2418 struct i40e_q_vector *q_vector;
2419 struct i40e_hw *hw = &pf->hw;
2420 u16 vector;
2421 int i, q;
2422 u32 val;
2423 u32 qp;
2424
2425 /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2426 * and PFINT_LNKLSTn registers, e.g.:
2427 * PFINT_ITRn[0..n-1] gets msix-1..msix-n (qpair interrupts)
2428 */
2429 qp = vsi->base_queue;
2430 vector = vsi->base_vector;
Alexander Duyck493fb302013-09-28 07:01:44 +00002431 for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2432 q_vector = vsi->q_vectors[i];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002433 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2434 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2435 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2436 q_vector->rx.itr);
2437 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2438 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2439 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2440 q_vector->tx.itr);
2441
2442 /* Linked list for the queuepairs assigned to this vector */
2443 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2444 for (q = 0; q < q_vector->num_ringpairs; q++) {
2445 val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2446 (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2447 (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2448 (qp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2449 (I40E_QUEUE_TYPE_TX
2450 << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2451
2452 wr32(hw, I40E_QINT_RQCTL(qp), val);
2453
2454 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2455 (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2456 (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2457 ((qp+1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2458 (I40E_QUEUE_TYPE_RX
2459 << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2460
2461 /* Terminate the linked list */
2462 if (q == (q_vector->num_ringpairs - 1))
2463 val |= (I40E_QUEUE_END_OF_LIST
2464 << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2465
2466 wr32(hw, I40E_QINT_TQCTL(qp), val);
2467 qp++;
2468 }
2469 }
2470
2471 i40e_flush(hw);
2472}
2473
2474/**
2475 * i40e_enable_misc_int_causes - enable the non-queue interrupts
2476 * @hw: ptr to the hardware info
2477 **/
2478static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2479{
2480 u32 val;
2481
2482 /* clear things first */
2483 wr32(hw, I40E_PFINT_ICR0_ENA, 0); /* disable all */
2484 rd32(hw, I40E_PFINT_ICR0); /* read to clear */
2485
2486 val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK |
2487 I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK |
2488 I40E_PFINT_ICR0_ENA_GRST_MASK |
2489 I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2490 I40E_PFINT_ICR0_ENA_GPIO_MASK |
2491 I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK |
2492 I40E_PFINT_ICR0_ENA_HMC_ERR_MASK |
2493 I40E_PFINT_ICR0_ENA_VFLR_MASK |
2494 I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2495
2496 wr32(hw, I40E_PFINT_ICR0_ENA, val);
2497
2498 /* SW_ITR_IDX = 0, but don't change INTENA */
Anjali Singhai Jain84ed40e2013-11-26 10:49:32 +00002499 wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2500 I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002501
2502 /* OTHER_ITR_IDX = 0 */
2503 wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2504}
2505
2506/**
2507 * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2508 * @vsi: the VSI being configured
2509 **/
2510static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2511{
Alexander Duyck493fb302013-09-28 07:01:44 +00002512 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002513 struct i40e_pf *pf = vsi->back;
2514 struct i40e_hw *hw = &pf->hw;
2515 u32 val;
2516
2517 /* set the ITR configuration */
2518 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2519 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2520 wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2521 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2522 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2523 wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2524
2525 i40e_enable_misc_int_causes(hw);
2526
2527 /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2528 wr32(hw, I40E_PFINT_LNKLST0, 0);
2529
2530 /* Associate the queue pair to the vector and enable the q int */
2531 val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2532 (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2533 (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2534
2535 wr32(hw, I40E_QINT_RQCTL(0), val);
2536
2537 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2538 (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2539 (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2540
2541 wr32(hw, I40E_QINT_TQCTL(0), val);
2542 i40e_flush(hw);
2543}
2544
2545/**
Mitch Williams2ef28cf2013-11-28 06:39:32 +00002546 * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2547 * @pf: board private structure
2548 **/
2549void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2550{
2551 struct i40e_hw *hw = &pf->hw;
2552
2553 wr32(hw, I40E_PFINT_DYN_CTL0,
2554 I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2555 i40e_flush(hw);
2556}
2557
2558/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002559 * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2560 * @pf: board private structure
2561 **/
Shannon Nelson116a57d2013-09-28 07:13:59 +00002562void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002563{
2564 struct i40e_hw *hw = &pf->hw;
2565 u32 val;
2566
2567 val = I40E_PFINT_DYN_CTL0_INTENA_MASK |
2568 I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2569 (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2570
2571 wr32(hw, I40E_PFINT_DYN_CTL0, val);
2572 i40e_flush(hw);
2573}
2574
2575/**
2576 * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2577 * @vsi: pointer to a vsi
2578 * @vector: enable a particular Hw Interrupt vector
2579 **/
2580void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2581{
2582 struct i40e_pf *pf = vsi->back;
2583 struct i40e_hw *hw = &pf->hw;
2584 u32 val;
2585
2586 val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2587 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2588 (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2589 wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
Jesse Brandeburg1022cb62013-09-28 07:13:08 +00002590 /* skip the flush */
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002591}
2592
2593/**
2594 * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2595 * @irq: interrupt number
2596 * @data: pointer to a q_vector
2597 **/
2598static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2599{
2600 struct i40e_q_vector *q_vector = data;
2601
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002602 if (!q_vector->tx.ring && !q_vector->rx.ring)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002603 return IRQ_HANDLED;
2604
2605 napi_schedule(&q_vector->napi);
2606
2607 return IRQ_HANDLED;
2608}
2609
2610/**
2611 * i40e_fdir_clean_rings - Interrupt Handler for FDIR rings
2612 * @irq: interrupt number
2613 * @data: pointer to a q_vector
2614 **/
2615static irqreturn_t i40e_fdir_clean_rings(int irq, void *data)
2616{
2617 struct i40e_q_vector *q_vector = data;
2618
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002619 if (!q_vector->tx.ring && !q_vector->rx.ring)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002620 return IRQ_HANDLED;
2621
2622 pr_info("fdir ring cleaning needed\n");
2623
2624 return IRQ_HANDLED;
2625}
2626
2627/**
2628 * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2629 * @vsi: the VSI being configured
2630 * @basename: name for the vector
2631 *
2632 * Allocates MSI-X vectors and requests interrupts from the kernel.
2633 **/
2634static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2635{
2636 int q_vectors = vsi->num_q_vectors;
2637 struct i40e_pf *pf = vsi->back;
2638 int base = vsi->base_vector;
2639 int rx_int_idx = 0;
2640 int tx_int_idx = 0;
2641 int vector, err;
2642
2643 for (vector = 0; vector < q_vectors; vector++) {
Alexander Duyck493fb302013-09-28 07:01:44 +00002644 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002645
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002646 if (q_vector->tx.ring && q_vector->rx.ring) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002647 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2648 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2649 tx_int_idx++;
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002650 } else if (q_vector->rx.ring) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002651 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2652 "%s-%s-%d", basename, "rx", rx_int_idx++);
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002653 } else if (q_vector->tx.ring) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002654 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2655 "%s-%s-%d", basename, "tx", tx_int_idx++);
2656 } else {
2657 /* skip this unused q_vector */
2658 continue;
2659 }
2660 err = request_irq(pf->msix_entries[base + vector].vector,
2661 vsi->irq_handler,
2662 0,
2663 q_vector->name,
2664 q_vector);
2665 if (err) {
2666 dev_info(&pf->pdev->dev,
2667 "%s: request_irq failed, error: %d\n",
2668 __func__, err);
2669 goto free_queue_irqs;
2670 }
2671 /* assign the mask for this irq */
2672 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2673 &q_vector->affinity_mask);
2674 }
2675
2676 return 0;
2677
2678free_queue_irqs:
2679 while (vector) {
2680 vector--;
2681 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2682 NULL);
2683 free_irq(pf->msix_entries[base + vector].vector,
2684 &(vsi->q_vectors[vector]));
2685 }
2686 return err;
2687}
2688
2689/**
2690 * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2691 * @vsi: the VSI being un-configured
2692 **/
2693static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2694{
2695 struct i40e_pf *pf = vsi->back;
2696 struct i40e_hw *hw = &pf->hw;
2697 int base = vsi->base_vector;
2698 int i;
2699
2700 for (i = 0; i < vsi->num_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +00002701 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2702 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002703 }
2704
2705 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2706 for (i = vsi->base_vector;
2707 i < (vsi->num_q_vectors + vsi->base_vector); i++)
2708 wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2709
2710 i40e_flush(hw);
2711 for (i = 0; i < vsi->num_q_vectors; i++)
2712 synchronize_irq(pf->msix_entries[i + base].vector);
2713 } else {
2714 /* Legacy and MSI mode - this stops all interrupt handling */
2715 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2716 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2717 i40e_flush(hw);
2718 synchronize_irq(pf->pdev->irq);
2719 }
2720}
2721
2722/**
2723 * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2724 * @vsi: the VSI being configured
2725 **/
2726static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2727{
2728 struct i40e_pf *pf = vsi->back;
2729 int i;
2730
2731 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2732 for (i = vsi->base_vector;
2733 i < (vsi->num_q_vectors + vsi->base_vector); i++)
2734 i40e_irq_dynamic_enable(vsi, i);
2735 } else {
2736 i40e_irq_dynamic_enable_icr0(pf);
2737 }
2738
Jesse Brandeburg1022cb62013-09-28 07:13:08 +00002739 i40e_flush(&pf->hw);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002740 return 0;
2741}
2742
2743/**
2744 * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2745 * @pf: board private structure
2746 **/
2747static void i40e_stop_misc_vector(struct i40e_pf *pf)
2748{
2749 /* Disable ICR 0 */
2750 wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2751 i40e_flush(&pf->hw);
2752}
2753
2754/**
2755 * i40e_intr - MSI/Legacy and non-queue interrupt handler
2756 * @irq: interrupt number
2757 * @data: pointer to a q_vector
2758 *
2759 * This is the handler used for all MSI/Legacy interrupts, and deals
2760 * with both queue and non-queue interrupts. This is also used in
2761 * MSIX mode to handle the non-queue interrupts.
2762 **/
2763static irqreturn_t i40e_intr(int irq, void *data)
2764{
2765 struct i40e_pf *pf = (struct i40e_pf *)data;
2766 struct i40e_hw *hw = &pf->hw;
Anjali Singhai Jain5e823062013-12-18 13:45:49 +00002767 irqreturn_t ret = IRQ_NONE;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002768 u32 icr0, icr0_remaining;
2769 u32 val, ena_mask;
2770
2771 icr0 = rd32(hw, I40E_PFINT_ICR0);
Anjali Singhai Jain5e823062013-12-18 13:45:49 +00002772 ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002773
Shannon Nelson116a57d2013-09-28 07:13:59 +00002774 /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2775 if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
Anjali Singhai Jain5e823062013-12-18 13:45:49 +00002776 goto enable_intr;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002777
Shannon Nelsoncd92e722013-11-16 10:00:44 +00002778 /* if interrupt but no bits showing, must be SWINT */
2779 if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2780 (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2781 pf->sw_int_count++;
2782
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002783 /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2784 if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2785
2786 /* temporarily disable queue cause for NAPI processing */
2787 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2788 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2789 wr32(hw, I40E_QINT_RQCTL(0), qval);
2790
2791 qval = rd32(hw, I40E_QINT_TQCTL(0));
2792 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2793 wr32(hw, I40E_QINT_TQCTL(0), qval);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002794
2795 if (!test_bit(__I40E_DOWN, &pf->state))
Alexander Duyck493fb302013-09-28 07:01:44 +00002796 napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002797 }
2798
2799 if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2800 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2801 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2802 }
2803
2804 if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2805 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2806 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2807 }
2808
2809 if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2810 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2811 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2812 }
2813
2814 if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2815 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2816 set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2817 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2818 val = rd32(hw, I40E_GLGEN_RSTAT);
2819 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2820 >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
Shannon Nelsond52cf0a2013-11-16 10:00:39 +00002821 if (val == I40E_RESET_CORER)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002822 pf->corer_count++;
Shannon Nelsond52cf0a2013-11-16 10:00:39 +00002823 else if (val == I40E_RESET_GLOBR)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002824 pf->globr_count++;
Shannon Nelsond52cf0a2013-11-16 10:00:39 +00002825 else if (val == I40E_RESET_EMPR)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002826 pf->empr_count++;
2827 }
2828
Anjali Singhai Jain9c010ee2013-11-28 06:39:20 +00002829 if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2830 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2831 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2832 }
2833
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002834 /* If a critical error is pending we have no choice but to reset the
2835 * device.
2836 * Report and mask out any remaining unexpected interrupts.
2837 */
2838 icr0_remaining = icr0 & ena_mask;
2839 if (icr0_remaining) {
2840 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2841 icr0_remaining);
Anjali Singhai Jain9c010ee2013-11-28 06:39:20 +00002842 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002843 (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2844 (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) ||
2845 (icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) {
Anjali Singhai Jain9c010ee2013-11-28 06:39:20 +00002846 dev_info(&pf->pdev->dev, "device will be reset\n");
2847 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2848 i40e_service_event_schedule(pf);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002849 }
2850 ena_mask &= ~icr0_remaining;
2851 }
Anjali Singhai Jain5e823062013-12-18 13:45:49 +00002852 ret = IRQ_HANDLED;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002853
Anjali Singhai Jain5e823062013-12-18 13:45:49 +00002854enable_intr:
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002855 /* re-enable interrupt causes */
2856 wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002857 if (!test_bit(__I40E_DOWN, &pf->state)) {
2858 i40e_service_event_schedule(pf);
2859 i40e_irq_dynamic_enable_icr0(pf);
2860 }
2861
Anjali Singhai Jain5e823062013-12-18 13:45:49 +00002862 return ret;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002863}
2864
2865/**
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002866 * i40e_map_vector_to_qp - Assigns the queue pair to the vector
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002867 * @vsi: the VSI being configured
2868 * @v_idx: vector index
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002869 * @qp_idx: queue pair index
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002870 **/
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002871static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002872{
Alexander Duyck493fb302013-09-28 07:01:44 +00002873 struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
Alexander Duyck9f65e152013-09-28 06:00:58 +00002874 struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
2875 struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002876
2877 tx_ring->q_vector = q_vector;
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002878 tx_ring->next = q_vector->tx.ring;
2879 q_vector->tx.ring = tx_ring;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002880 q_vector->tx.count++;
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002881
2882 rx_ring->q_vector = q_vector;
2883 rx_ring->next = q_vector->rx.ring;
2884 q_vector->rx.ring = rx_ring;
2885 q_vector->rx.count++;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002886}
2887
2888/**
2889 * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
2890 * @vsi: the VSI being configured
2891 *
2892 * This function maps descriptor rings to the queue-specific vectors
2893 * we were allotted through the MSI-X enabling code. Ideally, we'd have
2894 * one vector per queue pair, but on a constrained vector budget, we
2895 * group the queue pairs as "efficiently" as possible.
2896 **/
2897static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
2898{
2899 int qp_remaining = vsi->num_queue_pairs;
2900 int q_vectors = vsi->num_q_vectors;
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002901 int num_ringpairs;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002902 int v_start = 0;
2903 int qp_idx = 0;
2904
2905 /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
2906 * group them so there are multiple queues per vector.
2907 */
2908 for (; v_start < q_vectors && qp_remaining; v_start++) {
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00002909 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
2910
2911 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
2912
2913 q_vector->num_ringpairs = num_ringpairs;
2914
2915 q_vector->rx.count = 0;
2916 q_vector->tx.count = 0;
2917 q_vector->rx.ring = NULL;
2918 q_vector->tx.ring = NULL;
2919
2920 while (num_ringpairs--) {
2921 map_vector_to_qp(vsi, v_start, qp_idx);
2922 qp_idx++;
2923 qp_remaining--;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002924 }
2925 }
2926}
2927
2928/**
2929 * i40e_vsi_request_irq - Request IRQ from the OS
2930 * @vsi: the VSI being configured
2931 * @basename: name for the vector
2932 **/
2933static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
2934{
2935 struct i40e_pf *pf = vsi->back;
2936 int err;
2937
2938 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
2939 err = i40e_vsi_request_irq_msix(vsi, basename);
2940 else if (pf->flags & I40E_FLAG_MSI_ENABLED)
2941 err = request_irq(pf->pdev->irq, i40e_intr, 0,
2942 pf->misc_int_name, pf);
2943 else
2944 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
2945 pf->misc_int_name, pf);
2946
2947 if (err)
2948 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
2949
2950 return err;
2951}
2952
2953#ifdef CONFIG_NET_POLL_CONTROLLER
2954/**
2955 * i40e_netpoll - A Polling 'interrupt'handler
2956 * @netdev: network interface device structure
2957 *
2958 * This is used by netconsole to send skbs without having to re-enable
2959 * interrupts. It's not called while the normal interrupt routine is executing.
2960 **/
2961static void i40e_netpoll(struct net_device *netdev)
2962{
2963 struct i40e_netdev_priv *np = netdev_priv(netdev);
2964 struct i40e_vsi *vsi = np->vsi;
2965 struct i40e_pf *pf = vsi->back;
2966 int i;
2967
2968 /* if interface is down do nothing */
2969 if (test_bit(__I40E_DOWN, &vsi->state))
2970 return;
2971
2972 pf->flags |= I40E_FLAG_IN_NETPOLL;
2973 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2974 for (i = 0; i < vsi->num_q_vectors; i++)
Alexander Duyck493fb302013-09-28 07:01:44 +00002975 i40e_msix_clean_rings(0, vsi->q_vectors[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00002976 } else {
2977 i40e_intr(pf->pdev->irq, netdev);
2978 }
2979 pf->flags &= ~I40E_FLAG_IN_NETPOLL;
2980}
2981#endif
2982
2983/**
2984 * i40e_vsi_control_tx - Start or stop a VSI's rings
2985 * @vsi: the VSI being configured
2986 * @enable: start or stop the rings
2987 **/
2988static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
2989{
2990 struct i40e_pf *pf = vsi->back;
2991 struct i40e_hw *hw = &pf->hw;
2992 int i, j, pf_q;
2993 u32 tx_reg;
2994
2995 pf_q = vsi->base_queue;
2996 for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
2997 j = 1000;
2998 do {
2999 usleep_range(1000, 2000);
3000 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3001 } while (j-- && ((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT)
3002 ^ (tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT)) & 1);
3003
Mitch Williamsfda972f2013-11-28 06:39:29 +00003004 /* Skip if the queue is already in the requested state */
3005 if (enable && (tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3006 continue;
3007 if (!enable && !(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3008 continue;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003009
3010 /* turn on/off the queue */
3011 if (enable)
3012 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK |
3013 I40E_QTX_ENA_QENA_STAT_MASK;
3014 else
3015 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3016
3017 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3018
3019 /* wait for the change to finish */
3020 for (j = 0; j < 10; j++) {
3021 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3022 if (enable) {
3023 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3024 break;
3025 } else {
3026 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3027 break;
3028 }
3029
3030 udelay(10);
3031 }
3032 if (j >= 10) {
3033 dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3034 pf_q, (enable ? "en" : "dis"));
3035 return -ETIMEDOUT;
3036 }
3037 }
3038
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00003039 if (hw->revision_id == 0)
3040 mdelay(50);
3041
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003042 return 0;
3043}
3044
3045/**
3046 * i40e_vsi_control_rx - Start or stop a VSI's rings
3047 * @vsi: the VSI being configured
3048 * @enable: start or stop the rings
3049 **/
3050static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3051{
3052 struct i40e_pf *pf = vsi->back;
3053 struct i40e_hw *hw = &pf->hw;
3054 int i, j, pf_q;
3055 u32 rx_reg;
3056
3057 pf_q = vsi->base_queue;
3058 for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3059 j = 1000;
3060 do {
3061 usleep_range(1000, 2000);
3062 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3063 } while (j-- && ((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT)
3064 ^ (rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT)) & 1);
3065
3066 if (enable) {
3067 /* is STAT set ? */
3068 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3069 continue;
3070 } else {
3071 /* is !STAT set ? */
3072 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3073 continue;
3074 }
3075
3076 /* turn on/off the queue */
3077 if (enable)
3078 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK |
3079 I40E_QRX_ENA_QENA_STAT_MASK;
3080 else
3081 rx_reg &= ~(I40E_QRX_ENA_QENA_REQ_MASK |
3082 I40E_QRX_ENA_QENA_STAT_MASK);
3083 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3084
3085 /* wait for the change to finish */
3086 for (j = 0; j < 10; j++) {
3087 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3088
3089 if (enable) {
3090 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3091 break;
3092 } else {
3093 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3094 break;
3095 }
3096
3097 udelay(10);
3098 }
3099 if (j >= 10) {
3100 dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3101 pf_q, (enable ? "en" : "dis"));
3102 return -ETIMEDOUT;
3103 }
3104 }
3105
3106 return 0;
3107}
3108
3109/**
3110 * i40e_vsi_control_rings - Start or stop a VSI's rings
3111 * @vsi: the VSI being configured
3112 * @enable: start or stop the rings
3113 **/
Mitch Williamsfc18eaa2013-11-28 06:39:27 +00003114int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003115{
3116 int ret;
3117
3118 /* do rx first for enable and last for disable */
3119 if (request) {
3120 ret = i40e_vsi_control_rx(vsi, request);
3121 if (ret)
3122 return ret;
3123 ret = i40e_vsi_control_tx(vsi, request);
3124 } else {
3125 ret = i40e_vsi_control_tx(vsi, request);
3126 if (ret)
3127 return ret;
3128 ret = i40e_vsi_control_rx(vsi, request);
3129 }
3130
3131 return ret;
3132}
3133
3134/**
3135 * i40e_vsi_free_irq - Free the irq association with the OS
3136 * @vsi: the VSI being configured
3137 **/
3138static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3139{
3140 struct i40e_pf *pf = vsi->back;
3141 struct i40e_hw *hw = &pf->hw;
3142 int base = vsi->base_vector;
3143 u32 val, qp;
3144 int i;
3145
3146 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3147 if (!vsi->q_vectors)
3148 return;
3149
3150 for (i = 0; i < vsi->num_q_vectors; i++) {
3151 u16 vector = i + base;
3152
3153 /* free only the irqs that were actually requested */
Shannon Nelson78681b12013-11-28 06:39:36 +00003154 if (!vsi->q_vectors[i] ||
3155 !vsi->q_vectors[i]->num_ringpairs)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003156 continue;
3157
3158 /* clear the affinity_mask in the IRQ descriptor */
3159 irq_set_affinity_hint(pf->msix_entries[vector].vector,
3160 NULL);
3161 free_irq(pf->msix_entries[vector].vector,
Alexander Duyck493fb302013-09-28 07:01:44 +00003162 vsi->q_vectors[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003163
3164 /* Tear down the interrupt queue link list
3165 *
3166 * We know that they come in pairs and always
3167 * the Rx first, then the Tx. To clear the
3168 * link list, stick the EOL value into the
3169 * next_q field of the registers.
3170 */
3171 val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3172 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3173 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3174 val |= I40E_QUEUE_END_OF_LIST
3175 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3176 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3177
3178 while (qp != I40E_QUEUE_END_OF_LIST) {
3179 u32 next;
3180
3181 val = rd32(hw, I40E_QINT_RQCTL(qp));
3182
3183 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
3184 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3185 I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3186 I40E_QINT_RQCTL_INTEVENT_MASK);
3187
3188 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3189 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3190
3191 wr32(hw, I40E_QINT_RQCTL(qp), val);
3192
3193 val = rd32(hw, I40E_QINT_TQCTL(qp));
3194
3195 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3196 >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3197
3198 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
3199 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3200 I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3201 I40E_QINT_TQCTL_INTEVENT_MASK);
3202
3203 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3204 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3205
3206 wr32(hw, I40E_QINT_TQCTL(qp), val);
3207 qp = next;
3208 }
3209 }
3210 } else {
3211 free_irq(pf->pdev->irq, pf);
3212
3213 val = rd32(hw, I40E_PFINT_LNKLST0);
3214 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3215 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3216 val |= I40E_QUEUE_END_OF_LIST
3217 << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3218 wr32(hw, I40E_PFINT_LNKLST0, val);
3219
3220 val = rd32(hw, I40E_QINT_RQCTL(qp));
3221 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
3222 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3223 I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3224 I40E_QINT_RQCTL_INTEVENT_MASK);
3225
3226 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3227 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3228
3229 wr32(hw, I40E_QINT_RQCTL(qp), val);
3230
3231 val = rd32(hw, I40E_QINT_TQCTL(qp));
3232
3233 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
3234 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3235 I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3236 I40E_QINT_TQCTL_INTEVENT_MASK);
3237
3238 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3239 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3240
3241 wr32(hw, I40E_QINT_TQCTL(qp), val);
3242 }
3243}
3244
3245/**
Alexander Duyck493fb302013-09-28 07:01:44 +00003246 * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3247 * @vsi: the VSI being configured
3248 * @v_idx: Index of vector to be freed
3249 *
3250 * This function frees the memory allocated to the q_vector. In addition if
3251 * NAPI is enabled it will delete any references to the NAPI struct prior
3252 * to freeing the q_vector.
3253 **/
3254static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3255{
3256 struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00003257 struct i40e_ring *ring;
Alexander Duyck493fb302013-09-28 07:01:44 +00003258
3259 if (!q_vector)
3260 return;
3261
3262 /* disassociate q_vector from rings */
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00003263 i40e_for_each_ring(ring, q_vector->tx)
3264 ring->q_vector = NULL;
3265
3266 i40e_for_each_ring(ring, q_vector->rx)
3267 ring->q_vector = NULL;
Alexander Duyck493fb302013-09-28 07:01:44 +00003268
3269 /* only VSI w/ an associated netdev is set up w/ NAPI */
3270 if (vsi->netdev)
3271 netif_napi_del(&q_vector->napi);
3272
3273 vsi->q_vectors[v_idx] = NULL;
3274
3275 kfree_rcu(q_vector, rcu);
3276}
3277
3278/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003279 * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3280 * @vsi: the VSI being un-configured
3281 *
3282 * This frees the memory allocated to the q_vectors and
3283 * deletes references to the NAPI struct.
3284 **/
3285static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3286{
3287 int v_idx;
3288
Alexander Duyck493fb302013-09-28 07:01:44 +00003289 for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3290 i40e_free_q_vector(vsi, v_idx);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003291}
3292
3293/**
3294 * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3295 * @pf: board private structure
3296 **/
3297static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3298{
3299 /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3300 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3301 pci_disable_msix(pf->pdev);
3302 kfree(pf->msix_entries);
3303 pf->msix_entries = NULL;
3304 } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3305 pci_disable_msi(pf->pdev);
3306 }
3307 pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3308}
3309
3310/**
3311 * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3312 * @pf: board private structure
3313 *
3314 * We go through and clear interrupt specific resources and reset the structure
3315 * to pre-load conditions
3316 **/
3317static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3318{
3319 int i;
3320
3321 i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3322 for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3323 if (pf->vsi[i])
3324 i40e_vsi_free_q_vectors(pf->vsi[i]);
3325 i40e_reset_interrupt_capability(pf);
3326}
3327
3328/**
3329 * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3330 * @vsi: the VSI being configured
3331 **/
3332static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3333{
3334 int q_idx;
3335
3336 if (!vsi->netdev)
3337 return;
3338
3339 for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
Alexander Duyck493fb302013-09-28 07:01:44 +00003340 napi_enable(&vsi->q_vectors[q_idx]->napi);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003341}
3342
3343/**
3344 * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3345 * @vsi: the VSI being configured
3346 **/
3347static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3348{
3349 int q_idx;
3350
3351 if (!vsi->netdev)
3352 return;
3353
3354 for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
Alexander Duyck493fb302013-09-28 07:01:44 +00003355 napi_disable(&vsi->q_vectors[q_idx]->napi);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003356}
3357
3358/**
3359 * i40e_quiesce_vsi - Pause a given VSI
3360 * @vsi: the VSI being paused
3361 **/
3362static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3363{
3364 if (test_bit(__I40E_DOWN, &vsi->state))
3365 return;
3366
3367 set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3368 if (vsi->netdev && netif_running(vsi->netdev)) {
3369 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3370 } else {
3371 set_bit(__I40E_DOWN, &vsi->state);
3372 i40e_down(vsi);
3373 }
3374}
3375
3376/**
3377 * i40e_unquiesce_vsi - Resume a given VSI
3378 * @vsi: the VSI being resumed
3379 **/
3380static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3381{
3382 if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3383 return;
3384
3385 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3386 if (vsi->netdev && netif_running(vsi->netdev))
3387 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3388 else
3389 i40e_up(vsi); /* this clears the DOWN bit */
3390}
3391
3392/**
3393 * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3394 * @pf: the PF
3395 **/
3396static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3397{
3398 int v;
3399
3400 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3401 if (pf->vsi[v])
3402 i40e_quiesce_vsi(pf->vsi[v]);
3403 }
3404}
3405
3406/**
3407 * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3408 * @pf: the PF
3409 **/
3410static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3411{
3412 int v;
3413
3414 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3415 if (pf->vsi[v])
3416 i40e_unquiesce_vsi(pf->vsi[v]);
3417 }
3418}
3419
3420/**
3421 * i40e_dcb_get_num_tc - Get the number of TCs from DCBx config
3422 * @dcbcfg: the corresponding DCBx configuration structure
3423 *
3424 * Return the number of TCs from given DCBx configuration
3425 **/
3426static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3427{
Jesse Brandeburg078b5872013-09-25 23:41:14 +00003428 u8 num_tc = 0;
3429 int i;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003430
3431 /* Scan the ETS Config Priority Table to find
3432 * traffic class enabled for a given priority
3433 * and use the traffic class index to get the
3434 * number of traffic classes enabled
3435 */
3436 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3437 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3438 num_tc = dcbcfg->etscfg.prioritytable[i];
3439 }
3440
3441 /* Traffic class index starts from zero so
3442 * increment to return the actual count
3443 */
Jesse Brandeburg078b5872013-09-25 23:41:14 +00003444 return num_tc + 1;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003445}
3446
3447/**
3448 * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3449 * @dcbcfg: the corresponding DCBx configuration structure
3450 *
3451 * Query the current DCB configuration and return the number of
3452 * traffic classes enabled from the given DCBX config
3453 **/
3454static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3455{
3456 u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3457 u8 enabled_tc = 1;
3458 u8 i;
3459
3460 for (i = 0; i < num_tc; i++)
3461 enabled_tc |= 1 << i;
3462
3463 return enabled_tc;
3464}
3465
3466/**
3467 * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3468 * @pf: PF being queried
3469 *
3470 * Return number of traffic classes enabled for the given PF
3471 **/
3472static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3473{
3474 struct i40e_hw *hw = &pf->hw;
3475 u8 i, enabled_tc;
3476 u8 num_tc = 0;
3477 struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3478
3479 /* If DCB is not enabled then always in single TC */
3480 if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3481 return 1;
3482
3483 /* MFP mode return count of enabled TCs for this PF */
3484 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3485 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3486 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3487 if (enabled_tc & (1 << i))
3488 num_tc++;
3489 }
3490 return num_tc;
3491 }
3492
3493 /* SFP mode will be enabled for all TCs on port */
3494 return i40e_dcb_get_num_tc(dcbcfg);
3495}
3496
3497/**
3498 * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3499 * @pf: PF being queried
3500 *
3501 * Return a bitmap for first enabled traffic class for this PF.
3502 **/
3503static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3504{
3505 u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3506 u8 i = 0;
3507
3508 if (!enabled_tc)
3509 return 0x1; /* TC0 */
3510
3511 /* Find the first enabled TC */
3512 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3513 if (enabled_tc & (1 << i))
3514 break;
3515 }
3516
3517 return 1 << i;
3518}
3519
3520/**
3521 * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3522 * @pf: PF being queried
3523 *
3524 * Return a bitmap for enabled traffic classes for this PF.
3525 **/
3526static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3527{
3528 /* If DCB is not enabled for this PF then just return default TC */
3529 if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3530 return i40e_pf_get_default_tc(pf);
3531
3532 /* MFP mode will have enabled TCs set by FW */
3533 if (pf->flags & I40E_FLAG_MFP_ENABLED)
3534 return pf->hw.func_caps.enabled_tcmap;
3535
3536 /* SFP mode we want PF to be enabled for all TCs */
3537 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3538}
3539
3540/**
3541 * i40e_vsi_get_bw_info - Query VSI BW Information
3542 * @vsi: the VSI being queried
3543 *
3544 * Returns 0 on success, negative value on failure
3545 **/
3546static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3547{
3548 struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3549 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3550 struct i40e_pf *pf = vsi->back;
3551 struct i40e_hw *hw = &pf->hw;
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003552 i40e_status aq_ret;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003553 u32 tc_bw_max;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003554 int i;
3555
3556 /* Get the VSI level BW configuration */
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003557 aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3558 if (aq_ret) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003559 dev_info(&pf->pdev->dev,
3560 "couldn't get pf vsi bw config, err %d, aq_err %d\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003561 aq_ret, pf->hw.aq.asq_last_status);
3562 return -EINVAL;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003563 }
3564
3565 /* Get the VSI level BW configuration per TC */
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003566 aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3567 NULL);
3568 if (aq_ret) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003569 dev_info(&pf->pdev->dev,
3570 "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003571 aq_ret, pf->hw.aq.asq_last_status);
3572 return -EINVAL;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003573 }
3574
3575 if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3576 dev_info(&pf->pdev->dev,
3577 "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3578 bw_config.tc_valid_bits,
3579 bw_ets_config.tc_valid_bits);
3580 /* Still continuing */
3581 }
3582
3583 vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3584 vsi->bw_max_quanta = bw_config.max_bw;
3585 tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3586 (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3587 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3588 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3589 vsi->bw_ets_limit_credits[i] =
3590 le16_to_cpu(bw_ets_config.credits[i]);
3591 /* 3 bits out of 4 for each TC */
3592 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3593 }
Jesse Brandeburg078b5872013-09-25 23:41:14 +00003594
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003595 return 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003596}
3597
3598/**
3599 * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3600 * @vsi: the VSI being configured
3601 * @enabled_tc: TC bitmap
3602 * @bw_credits: BW shared credits per TC
3603 *
3604 * Returns 0 on success, negative value on failure
3605 **/
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003606static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003607 u8 *bw_share)
3608{
3609 struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003610 i40e_status aq_ret;
3611 int i;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003612
3613 bw_data.tc_valid_bits = enabled_tc;
3614 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3615 bw_data.tc_bw_credits[i] = bw_share[i];
3616
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003617 aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3618 NULL);
3619 if (aq_ret) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003620 dev_info(&vsi->back->pdev->dev,
3621 "%s: AQ command Config VSI BW allocation per TC failed = %d\n",
3622 __func__, vsi->back->hw.aq.asq_last_status);
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003623 return -EINVAL;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003624 }
3625
3626 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3627 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3628
Jesse Brandeburgdcae29b2013-09-13 08:23:20 +00003629 return 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003630}
3631
3632/**
3633 * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3634 * @vsi: the VSI being configured
3635 * @enabled_tc: TC map to be enabled
3636 *
3637 **/
3638static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3639{
3640 struct net_device *netdev = vsi->netdev;
3641 struct i40e_pf *pf = vsi->back;
3642 struct i40e_hw *hw = &pf->hw;
3643 u8 netdev_tc = 0;
3644 int i;
3645 struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3646
3647 if (!netdev)
3648 return;
3649
3650 if (!enabled_tc) {
3651 netdev_reset_tc(netdev);
3652 return;
3653 }
3654
3655 /* Set up actual enabled TCs on the VSI */
3656 if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3657 return;
3658
3659 /* set per TC queues for the VSI */
3660 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3661 /* Only set TC queues for enabled tcs
3662 *
3663 * e.g. For a VSI that has TC0 and TC3 enabled the
3664 * enabled_tc bitmap would be 0x00001001; the driver
3665 * will set the numtc for netdev as 2 that will be
3666 * referenced by the netdev layer as TC 0 and 1.
3667 */
3668 if (vsi->tc_config.enabled_tc & (1 << i))
3669 netdev_set_tc_queue(netdev,
3670 vsi->tc_config.tc_info[i].netdev_tc,
3671 vsi->tc_config.tc_info[i].qcount,
3672 vsi->tc_config.tc_info[i].qoffset);
3673 }
3674
3675 /* Assign UP2TC map for the VSI */
3676 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3677 /* Get the actual TC# for the UP */
3678 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3679 /* Get the mapped netdev TC# for the UP */
3680 netdev_tc = vsi->tc_config.tc_info[ets_tc].netdev_tc;
3681 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3682 }
3683}
3684
3685/**
3686 * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3687 * @vsi: the VSI being configured
3688 * @ctxt: the ctxt buffer returned from AQ VSI update param command
3689 **/
3690static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3691 struct i40e_vsi_context *ctxt)
3692{
3693 /* copy just the sections touched not the entire info
3694 * since not all sections are valid as returned by
3695 * update vsi params
3696 */
3697 vsi->info.mapping_flags = ctxt->info.mapping_flags;
3698 memcpy(&vsi->info.queue_mapping,
3699 &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3700 memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3701 sizeof(vsi->info.tc_mapping));
3702}
3703
3704/**
3705 * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3706 * @vsi: VSI to be configured
3707 * @enabled_tc: TC bitmap
3708 *
3709 * This configures a particular VSI for TCs that are mapped to the
3710 * given TC bitmap. It uses default bandwidth share for TCs across
3711 * VSIs to configure TC for a particular VSI.
3712 *
3713 * NOTE:
3714 * It is expected that the VSI queues have been quisced before calling
3715 * this function.
3716 **/
3717static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3718{
3719 u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3720 struct i40e_vsi_context ctxt;
3721 int ret = 0;
3722 int i;
3723
3724 /* Check if enabled_tc is same as existing or new TCs */
3725 if (vsi->tc_config.enabled_tc == enabled_tc)
3726 return ret;
3727
3728 /* Enable ETS TCs with equal BW Share for now across all VSIs */
3729 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3730 if (enabled_tc & (1 << i))
3731 bw_share[i] = 1;
3732 }
3733
3734 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3735 if (ret) {
3736 dev_info(&vsi->back->pdev->dev,
3737 "Failed configuring TC map %d for VSI %d\n",
3738 enabled_tc, vsi->seid);
3739 goto out;
3740 }
3741
3742 /* Update Queue Pairs Mapping for currently enabled UPs */
3743 ctxt.seid = vsi->seid;
3744 ctxt.pf_num = vsi->back->hw.pf_id;
3745 ctxt.vf_num = 0;
3746 ctxt.uplink_seid = vsi->uplink_seid;
3747 memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3748 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3749
3750 /* Update the VSI after updating the VSI queue-mapping information */
3751 ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3752 if (ret) {
3753 dev_info(&vsi->back->pdev->dev,
3754 "update vsi failed, aq_err=%d\n",
3755 vsi->back->hw.aq.asq_last_status);
3756 goto out;
3757 }
3758 /* update the local VSI info with updated queue map */
3759 i40e_vsi_update_queue_map(vsi, &ctxt);
3760 vsi->info.valid_sections = 0;
3761
3762 /* Update current VSI BW information */
3763 ret = i40e_vsi_get_bw_info(vsi);
3764 if (ret) {
3765 dev_info(&vsi->back->pdev->dev,
3766 "Failed updating vsi bw info, aq_err=%d\n",
3767 vsi->back->hw.aq.asq_last_status);
3768 goto out;
3769 }
3770
3771 /* Update the netdev TC setup */
3772 i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3773out:
3774 return ret;
3775}
3776
3777/**
3778 * i40e_up_complete - Finish the last steps of bringing up a connection
3779 * @vsi: the VSI being configured
3780 **/
3781static int i40e_up_complete(struct i40e_vsi *vsi)
3782{
3783 struct i40e_pf *pf = vsi->back;
3784 int err;
3785
3786 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3787 i40e_vsi_configure_msix(vsi);
3788 else
3789 i40e_configure_msi_and_legacy(vsi);
3790
3791 /* start rings */
3792 err = i40e_vsi_control_rings(vsi, true);
3793 if (err)
3794 return err;
3795
3796 clear_bit(__I40E_DOWN, &vsi->state);
3797 i40e_napi_enable_all(vsi);
3798 i40e_vsi_enable_irq(vsi);
3799
3800 if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
3801 (vsi->netdev)) {
Anjali Singhai6d779b42013-09-28 06:00:02 +00003802 netdev_info(vsi->netdev, "NIC Link is Up\n");
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003803 netif_tx_start_all_queues(vsi->netdev);
3804 netif_carrier_on(vsi->netdev);
Anjali Singhai6d779b42013-09-28 06:00:02 +00003805 } else if (vsi->netdev) {
3806 netdev_info(vsi->netdev, "NIC Link is Down\n");
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003807 }
3808 i40e_service_event_schedule(pf);
3809
3810 return 0;
3811}
3812
3813/**
3814 * i40e_vsi_reinit_locked - Reset the VSI
3815 * @vsi: the VSI being configured
3816 *
3817 * Rebuild the ring structs after some configuration
3818 * has changed, e.g. MTU size.
3819 **/
3820static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
3821{
3822 struct i40e_pf *pf = vsi->back;
3823
3824 WARN_ON(in_interrupt());
3825 while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
3826 usleep_range(1000, 2000);
3827 i40e_down(vsi);
3828
3829 /* Give a VF some time to respond to the reset. The
3830 * two second wait is based upon the watchdog cycle in
3831 * the VF driver.
3832 */
3833 if (vsi->type == I40E_VSI_SRIOV)
3834 msleep(2000);
3835 i40e_up(vsi);
3836 clear_bit(__I40E_CONFIG_BUSY, &pf->state);
3837}
3838
3839/**
3840 * i40e_up - Bring the connection back up after being down
3841 * @vsi: the VSI being configured
3842 **/
3843int i40e_up(struct i40e_vsi *vsi)
3844{
3845 int err;
3846
3847 err = i40e_vsi_configure(vsi);
3848 if (!err)
3849 err = i40e_up_complete(vsi);
3850
3851 return err;
3852}
3853
3854/**
3855 * i40e_down - Shutdown the connection processing
3856 * @vsi: the VSI being stopped
3857 **/
3858void i40e_down(struct i40e_vsi *vsi)
3859{
3860 int i;
3861
3862 /* It is assumed that the caller of this function
3863 * sets the vsi->state __I40E_DOWN bit.
3864 */
3865 if (vsi->netdev) {
3866 netif_carrier_off(vsi->netdev);
3867 netif_tx_disable(vsi->netdev);
3868 }
3869 i40e_vsi_disable_irq(vsi);
3870 i40e_vsi_control_rings(vsi, false);
3871 i40e_napi_disable_all(vsi);
3872
3873 for (i = 0; i < vsi->num_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +00003874 i40e_clean_tx_ring(vsi->tx_rings[i]);
3875 i40e_clean_rx_ring(vsi->rx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003876 }
3877}
3878
3879/**
3880 * i40e_setup_tc - configure multiple traffic classes
3881 * @netdev: net device to configure
3882 * @tc: number of traffic classes to enable
3883 **/
3884static int i40e_setup_tc(struct net_device *netdev, u8 tc)
3885{
3886 struct i40e_netdev_priv *np = netdev_priv(netdev);
3887 struct i40e_vsi *vsi = np->vsi;
3888 struct i40e_pf *pf = vsi->back;
3889 u8 enabled_tc = 0;
3890 int ret = -EINVAL;
3891 int i;
3892
3893 /* Check if DCB enabled to continue */
3894 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
3895 netdev_info(netdev, "DCB is not enabled for adapter\n");
3896 goto exit;
3897 }
3898
3899 /* Check if MFP enabled */
3900 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3901 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
3902 goto exit;
3903 }
3904
3905 /* Check whether tc count is within enabled limit */
3906 if (tc > i40e_pf_get_num_tc(pf)) {
3907 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
3908 goto exit;
3909 }
3910
3911 /* Generate TC map for number of tc requested */
3912 for (i = 0; i < tc; i++)
3913 enabled_tc |= (1 << i);
3914
3915 /* Requesting same TC configuration as already enabled */
3916 if (enabled_tc == vsi->tc_config.enabled_tc)
3917 return 0;
3918
3919 /* Quiesce VSI queues */
3920 i40e_quiesce_vsi(vsi);
3921
3922 /* Configure VSI for enabled TCs */
3923 ret = i40e_vsi_config_tc(vsi, enabled_tc);
3924 if (ret) {
3925 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
3926 vsi->seid);
3927 goto exit;
3928 }
3929
3930 /* Unquiesce VSI */
3931 i40e_unquiesce_vsi(vsi);
3932
3933exit:
3934 return ret;
3935}
3936
3937/**
3938 * i40e_open - Called when a network interface is made active
3939 * @netdev: network interface device structure
3940 *
3941 * The open entry point is called when a network interface is made
3942 * active by the system (IFF_UP). At this point all resources needed
3943 * for transmit and receive operations are allocated, the interrupt
3944 * handler is registered with the OS, the netdev watchdog subtask is
3945 * enabled, and the stack is notified that the interface is ready.
3946 *
3947 * Returns 0 on success, negative value on failure
3948 **/
3949static int i40e_open(struct net_device *netdev)
3950{
3951 struct i40e_netdev_priv *np = netdev_priv(netdev);
3952 struct i40e_vsi *vsi = np->vsi;
3953 struct i40e_pf *pf = vsi->back;
3954 char int_name[IFNAMSIZ];
3955 int err;
3956
3957 /* disallow open during test */
3958 if (test_bit(__I40E_TESTING, &pf->state))
3959 return -EBUSY;
3960
3961 netif_carrier_off(netdev);
3962
3963 /* allocate descriptors */
3964 err = i40e_vsi_setup_tx_resources(vsi);
3965 if (err)
3966 goto err_setup_tx;
3967 err = i40e_vsi_setup_rx_resources(vsi);
3968 if (err)
3969 goto err_setup_rx;
3970
3971 err = i40e_vsi_configure(vsi);
3972 if (err)
3973 goto err_setup_rx;
3974
3975 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
3976 dev_driver_string(&pf->pdev->dev), netdev->name);
3977 err = i40e_vsi_request_irq(vsi, int_name);
3978 if (err)
3979 goto err_setup_rx;
3980
Anjali Singhai Jain25946dd2013-11-26 10:49:14 +00003981 /* Notify the stack of the actual queue counts. */
Neerav Parikhd7397642013-11-28 06:39:37 +00003982 err = netif_set_real_num_tx_queues(netdev, vsi->num_queue_pairs);
Anjali Singhai Jain25946dd2013-11-26 10:49:14 +00003983 if (err)
3984 goto err_set_queues;
3985
Neerav Parikhd7397642013-11-28 06:39:37 +00003986 err = netif_set_real_num_rx_queues(netdev, vsi->num_queue_pairs);
Anjali Singhai Jain25946dd2013-11-26 10:49:14 +00003987 if (err)
3988 goto err_set_queues;
3989
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003990 err = i40e_up_complete(vsi);
3991 if (err)
3992 goto err_up_complete;
3993
Jeff Kirshera1c9a9d2013-12-28 07:32:18 +00003994#ifdef CONFIG_I40E_VXLAN
3995 vxlan_get_rx_port(netdev);
3996#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00003997
3998 return 0;
3999
4000err_up_complete:
4001 i40e_down(vsi);
Anjali Singhai Jain25946dd2013-11-26 10:49:14 +00004002err_set_queues:
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004003 i40e_vsi_free_irq(vsi);
4004err_setup_rx:
4005 i40e_vsi_free_rx_resources(vsi);
4006err_setup_tx:
4007 i40e_vsi_free_tx_resources(vsi);
4008 if (vsi == pf->vsi[pf->lan_vsi])
4009 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4010
4011 return err;
4012}
4013
4014/**
4015 * i40e_close - Disables a network interface
4016 * @netdev: network interface device structure
4017 *
4018 * The close entry point is called when an interface is de-activated
4019 * by the OS. The hardware is still under the driver's control, but
4020 * this netdev interface is disabled.
4021 *
4022 * Returns 0, this is not allowed to fail
4023 **/
4024static int i40e_close(struct net_device *netdev)
4025{
4026 struct i40e_netdev_priv *np = netdev_priv(netdev);
4027 struct i40e_vsi *vsi = np->vsi;
4028
4029 if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4030 return 0;
4031
4032 i40e_down(vsi);
4033 i40e_vsi_free_irq(vsi);
4034
4035 i40e_vsi_free_tx_resources(vsi);
4036 i40e_vsi_free_rx_resources(vsi);
4037
4038 return 0;
4039}
4040
4041/**
4042 * i40e_do_reset - Start a PF or Core Reset sequence
4043 * @pf: board private structure
4044 * @reset_flags: which reset is requested
4045 *
4046 * The essential difference in resets is that the PF Reset
4047 * doesn't clear the packet buffers, doesn't reset the PE
4048 * firmware, and doesn't bother the other PFs on the chip.
4049 **/
4050void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4051{
4052 u32 val;
4053
4054 WARN_ON(in_interrupt());
4055
4056 /* do the biggest reset indicated */
4057 if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4058
4059 /* Request a Global Reset
4060 *
4061 * This will start the chip's countdown to the actual full
4062 * chip reset event, and a warning interrupt to be sent
4063 * to all PFs, including the requestor. Our handler
4064 * for the warning interrupt will deal with the shutdown
4065 * and recovery of the switch setup.
4066 */
4067 dev_info(&pf->pdev->dev, "GlobalR requested\n");
4068 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4069 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4070 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4071
4072 } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4073
4074 /* Request a Core Reset
4075 *
4076 * Same as Global Reset, except does *not* include the MAC/PHY
4077 */
4078 dev_info(&pf->pdev->dev, "CoreR requested\n");
4079 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4080 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4081 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4082 i40e_flush(&pf->hw);
4083
Shannon Nelson7823fe32013-11-16 10:00:45 +00004084 } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4085
4086 /* Request a Firmware Reset
4087 *
4088 * Same as Global reset, plus restarting the
4089 * embedded firmware engine.
4090 */
4091 /* enable EMP Reset */
4092 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4093 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4094 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4095
4096 /* force the reset */
4097 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4098 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4099 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4100 i40e_flush(&pf->hw);
4101
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004102 } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4103
4104 /* Request a PF Reset
4105 *
4106 * Resets only the PF-specific registers
4107 *
4108 * This goes directly to the tear-down and rebuild of
4109 * the switch, since we need to do all the recovery as
4110 * for the Core Reset.
4111 */
4112 dev_info(&pf->pdev->dev, "PFR requested\n");
4113 i40e_handle_reset_warning(pf);
4114
4115 } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4116 int v;
4117
4118 /* Find the VSI(s) that requested a re-init */
4119 dev_info(&pf->pdev->dev,
4120 "VSI reinit requested\n");
4121 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4122 struct i40e_vsi *vsi = pf->vsi[v];
4123 if (vsi != NULL &&
4124 test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4125 i40e_vsi_reinit_locked(pf->vsi[v]);
4126 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4127 }
4128 }
4129
4130 /* no further action needed, so return now */
4131 return;
4132 } else {
4133 dev_info(&pf->pdev->dev,
4134 "bad reset request 0x%08x\n", reset_flags);
4135 return;
4136 }
4137}
4138
4139/**
Anjali Singhai Jain233261862013-11-26 10:49:22 +00004140 * i40e_do_reset_safe - Protected reset path for userland calls.
4141 * @pf: board private structure
4142 * @reset_flags: which reset is requested
4143 *
4144 **/
4145void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4146{
4147 rtnl_lock();
4148 i40e_do_reset(pf, reset_flags);
4149 rtnl_unlock();
4150}
4151
4152/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004153 * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4154 * @pf: board private structure
4155 * @e: event info posted on ARQ
4156 *
4157 * Handler for LAN Queue Overflow Event generated by the firmware for PF
4158 * and VF queues
4159 **/
4160static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4161 struct i40e_arq_event_info *e)
4162{
4163 struct i40e_aqc_lan_overflow *data =
4164 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4165 u32 queue = le32_to_cpu(data->prtdcb_rupto);
4166 u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4167 struct i40e_hw *hw = &pf->hw;
4168 struct i40e_vf *vf;
4169 u16 vf_id;
4170
4171 dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n",
4172 __func__, queue, qtx_ctl);
4173
4174 /* Queue belongs to VF, find the VF and issue VF reset */
4175 if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4176 >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4177 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4178 >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4179 vf_id -= hw->func_caps.vf_base_id;
4180 vf = &pf->vf[vf_id];
4181 i40e_vc_notify_vf_reset(vf);
4182 /* Allow VF to process pending reset notification */
4183 msleep(20);
4184 i40e_reset_vf(vf, false);
4185 }
4186}
4187
4188/**
4189 * i40e_service_event_complete - Finish up the service event
4190 * @pf: board private structure
4191 **/
4192static void i40e_service_event_complete(struct i40e_pf *pf)
4193{
4194 BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4195
4196 /* flush memory to make sure state is correct before next watchog */
4197 smp_mb__before_clear_bit();
4198 clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4199}
4200
4201/**
4202 * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4203 * @pf: board private structure
4204 **/
4205static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4206{
4207 if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4208 return;
4209
4210 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4211
4212 /* if interface is down do nothing */
4213 if (test_bit(__I40E_DOWN, &pf->state))
4214 return;
4215}
4216
4217/**
4218 * i40e_vsi_link_event - notify VSI of a link event
4219 * @vsi: vsi to be notified
4220 * @link_up: link up or down
4221 **/
4222static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4223{
4224 if (!vsi)
4225 return;
4226
4227 switch (vsi->type) {
4228 case I40E_VSI_MAIN:
4229 if (!vsi->netdev || !vsi->netdev_registered)
4230 break;
4231
4232 if (link_up) {
4233 netif_carrier_on(vsi->netdev);
4234 netif_tx_wake_all_queues(vsi->netdev);
4235 } else {
4236 netif_carrier_off(vsi->netdev);
4237 netif_tx_stop_all_queues(vsi->netdev);
4238 }
4239 break;
4240
4241 case I40E_VSI_SRIOV:
4242 break;
4243
4244 case I40E_VSI_VMDQ2:
4245 case I40E_VSI_CTRL:
4246 case I40E_VSI_MIRROR:
4247 default:
4248 /* there is no notification for other VSIs */
4249 break;
4250 }
4251}
4252
4253/**
4254 * i40e_veb_link_event - notify elements on the veb of a link event
4255 * @veb: veb to be notified
4256 * @link_up: link up or down
4257 **/
4258static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4259{
4260 struct i40e_pf *pf;
4261 int i;
4262
4263 if (!veb || !veb->pf)
4264 return;
4265 pf = veb->pf;
4266
4267 /* depth first... */
4268 for (i = 0; i < I40E_MAX_VEB; i++)
4269 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4270 i40e_veb_link_event(pf->veb[i], link_up);
4271
4272 /* ... now the local VSIs */
4273 for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4274 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4275 i40e_vsi_link_event(pf->vsi[i], link_up);
4276}
4277
4278/**
4279 * i40e_link_event - Update netif_carrier status
4280 * @pf: board private structure
4281 **/
4282static void i40e_link_event(struct i40e_pf *pf)
4283{
4284 bool new_link, old_link;
4285
4286 new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4287 old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4288
4289 if (new_link == old_link)
4290 return;
4291
Anjali Singhai6d779b42013-09-28 06:00:02 +00004292 if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4293 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4294 "NIC Link is %s\n", (new_link ? "Up" : "Down"));
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004295
4296 /* Notify the base of the switch tree connected to
4297 * the link. Floating VEBs are not notified.
4298 */
4299 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4300 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4301 else
4302 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4303
4304 if (pf->vf)
4305 i40e_vc_notify_link_state(pf);
4306}
4307
4308/**
4309 * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4310 * @pf: board private structure
4311 *
4312 * Set the per-queue flags to request a check for stuck queues in the irq
4313 * clean functions, then force interrupts to be sure the irq clean is called.
4314 **/
4315static void i40e_check_hang_subtask(struct i40e_pf *pf)
4316{
4317 int i, v;
4318
4319 /* If we're down or resetting, just bail */
4320 if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4321 return;
4322
4323 /* for each VSI/netdev
4324 * for each Tx queue
4325 * set the check flag
4326 * for each q_vector
4327 * force an interrupt
4328 */
4329 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4330 struct i40e_vsi *vsi = pf->vsi[v];
4331 int armed = 0;
4332
4333 if (!pf->vsi[v] ||
4334 test_bit(__I40E_DOWN, &vsi->state) ||
4335 (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4336 continue;
4337
4338 for (i = 0; i < vsi->num_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +00004339 set_check_for_tx_hang(vsi->tx_rings[i]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004340 if (test_bit(__I40E_HANG_CHECK_ARMED,
Alexander Duyck9f65e152013-09-28 06:00:58 +00004341 &vsi->tx_rings[i]->state))
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004342 armed++;
4343 }
4344
4345 if (armed) {
4346 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4347 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4348 (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4349 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4350 } else {
4351 u16 vec = vsi->base_vector - 1;
4352 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4353 I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4354 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4355 wr32(&vsi->back->hw,
4356 I40E_PFINT_DYN_CTLN(vec), val);
4357 }
4358 i40e_flush(&vsi->back->hw);
4359 }
4360 }
4361}
4362
4363/**
4364 * i40e_watchdog_subtask - Check and bring link up
4365 * @pf: board private structure
4366 **/
4367static void i40e_watchdog_subtask(struct i40e_pf *pf)
4368{
4369 int i;
4370
4371 /* if interface is down do nothing */
4372 if (test_bit(__I40E_DOWN, &pf->state) ||
4373 test_bit(__I40E_CONFIG_BUSY, &pf->state))
4374 return;
4375
4376 /* Update the stats for active netdevs so the network stack
4377 * can look at updated numbers whenever it cares to
4378 */
4379 for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4380 if (pf->vsi[i] && pf->vsi[i]->netdev)
4381 i40e_update_stats(pf->vsi[i]);
4382
4383 /* Update the stats for the active switching components */
4384 for (i = 0; i < I40E_MAX_VEB; i++)
4385 if (pf->veb[i])
4386 i40e_update_veb_stats(pf->veb[i]);
4387}
4388
4389/**
4390 * i40e_reset_subtask - Set up for resetting the device and driver
4391 * @pf: board private structure
4392 **/
4393static void i40e_reset_subtask(struct i40e_pf *pf)
4394{
4395 u32 reset_flags = 0;
4396
Anjali Singhai Jain233261862013-11-26 10:49:22 +00004397 rtnl_lock();
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004398 if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4399 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4400 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4401 }
4402 if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4403 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4404 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4405 }
4406 if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4407 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4408 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4409 }
4410 if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4411 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4412 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4413 }
4414
4415 /* If there's a recovery already waiting, it takes
4416 * precedence before starting a new reset sequence.
4417 */
4418 if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4419 i40e_handle_reset_warning(pf);
Anjali Singhai Jain233261862013-11-26 10:49:22 +00004420 goto unlock;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004421 }
4422
4423 /* If we're already down or resetting, just bail */
4424 if (reset_flags &&
4425 !test_bit(__I40E_DOWN, &pf->state) &&
4426 !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4427 i40e_do_reset(pf, reset_flags);
Anjali Singhai Jain233261862013-11-26 10:49:22 +00004428
4429unlock:
4430 rtnl_unlock();
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004431}
4432
4433/**
4434 * i40e_handle_link_event - Handle link event
4435 * @pf: board private structure
4436 * @e: event info posted on ARQ
4437 **/
4438static void i40e_handle_link_event(struct i40e_pf *pf,
4439 struct i40e_arq_event_info *e)
4440{
4441 struct i40e_hw *hw = &pf->hw;
4442 struct i40e_aqc_get_link_status *status =
4443 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4444 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4445
4446 /* save off old link status information */
4447 memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4448 sizeof(pf->hw.phy.link_info_old));
4449
4450 /* update link status */
4451 hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4452 hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4453 hw_link_info->link_info = status->link_info;
4454 hw_link_info->an_info = status->an_info;
4455 hw_link_info->ext_info = status->ext_info;
4456 hw_link_info->lse_enable =
4457 le16_to_cpu(status->command_flags) &
4458 I40E_AQ_LSE_ENABLE;
4459
4460 /* process the event */
4461 i40e_link_event(pf);
4462
4463 /* Do a new status request to re-enable LSE reporting
4464 * and load new status information into the hw struct,
4465 * then see if the status changed while processing the
4466 * initial event.
4467 */
4468 i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
4469 i40e_link_event(pf);
4470}
4471
4472/**
4473 * i40e_clean_adminq_subtask - Clean the AdminQ rings
4474 * @pf: board private structure
4475 **/
4476static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
4477{
4478 struct i40e_arq_event_info event;
4479 struct i40e_hw *hw = &pf->hw;
4480 u16 pending, i = 0;
4481 i40e_status ret;
4482 u16 opcode;
4483 u32 val;
4484
4485 if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
4486 return;
4487
Mitch Williams3197ce22013-11-28 06:39:39 +00004488 event.msg_size = I40E_MAX_AQ_BUF_SIZE;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004489 event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
4490 if (!event.msg_buf)
4491 return;
4492
4493 do {
Mitch Williams2f019122013-11-28 06:39:33 +00004494 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004495 ret = i40e_clean_arq_element(hw, &event, &pending);
4496 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
4497 dev_info(&pf->pdev->dev, "No ARQ event found\n");
4498 break;
4499 } else if (ret) {
4500 dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
4501 break;
4502 }
4503
4504 opcode = le16_to_cpu(event.desc.opcode);
4505 switch (opcode) {
4506
4507 case i40e_aqc_opc_get_link_status:
4508 i40e_handle_link_event(pf, &event);
4509 break;
4510 case i40e_aqc_opc_send_msg_to_pf:
4511 ret = i40e_vc_process_vf_msg(pf,
4512 le16_to_cpu(event.desc.retval),
4513 le32_to_cpu(event.desc.cookie_high),
4514 le32_to_cpu(event.desc.cookie_low),
4515 event.msg_buf,
4516 event.msg_size);
4517 break;
4518 case i40e_aqc_opc_lldp_update_mib:
4519 dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
4520 break;
4521 case i40e_aqc_opc_event_lan_overflow:
4522 dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
4523 i40e_handle_lan_overflow_event(pf, &event);
4524 break;
4525 default:
4526 dev_info(&pf->pdev->dev,
4527 "ARQ Error: Unknown event %d received\n",
4528 event.desc.opcode);
4529 break;
4530 }
4531 } while (pending && (i++ < pf->adminq_work_limit));
4532
4533 clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
4534 /* re-enable Admin queue interrupt cause */
4535 val = rd32(hw, I40E_PFINT_ICR0_ENA);
4536 val |= I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4537 wr32(hw, I40E_PFINT_ICR0_ENA, val);
4538 i40e_flush(hw);
4539
4540 kfree(event.msg_buf);
4541}
4542
4543/**
4544 * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
4545 * @veb: pointer to the VEB instance
4546 *
4547 * This is a recursive function that first builds the attached VSIs then
4548 * recurses in to build the next layer of VEB. We track the connections
4549 * through our own index numbers because the seid's from the HW could
4550 * change across the reset.
4551 **/
4552static int i40e_reconstitute_veb(struct i40e_veb *veb)
4553{
4554 struct i40e_vsi *ctl_vsi = NULL;
4555 struct i40e_pf *pf = veb->pf;
4556 int v, veb_idx;
4557 int ret;
4558
4559 /* build VSI that owns this VEB, temporarily attached to base VEB */
4560 for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
4561 if (pf->vsi[v] &&
4562 pf->vsi[v]->veb_idx == veb->idx &&
4563 pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
4564 ctl_vsi = pf->vsi[v];
4565 break;
4566 }
4567 }
4568 if (!ctl_vsi) {
4569 dev_info(&pf->pdev->dev,
4570 "missing owner VSI for veb_idx %d\n", veb->idx);
4571 ret = -ENOENT;
4572 goto end_reconstitute;
4573 }
4574 if (ctl_vsi != pf->vsi[pf->lan_vsi])
4575 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
4576 ret = i40e_add_vsi(ctl_vsi);
4577 if (ret) {
4578 dev_info(&pf->pdev->dev,
4579 "rebuild of owner VSI failed: %d\n", ret);
4580 goto end_reconstitute;
4581 }
4582 i40e_vsi_reset_stats(ctl_vsi);
4583
4584 /* create the VEB in the switch and move the VSI onto the VEB */
4585 ret = i40e_add_veb(veb, ctl_vsi);
4586 if (ret)
4587 goto end_reconstitute;
4588
4589 /* create the remaining VSIs attached to this VEB */
4590 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4591 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
4592 continue;
4593
4594 if (pf->vsi[v]->veb_idx == veb->idx) {
4595 struct i40e_vsi *vsi = pf->vsi[v];
4596 vsi->uplink_seid = veb->seid;
4597 ret = i40e_add_vsi(vsi);
4598 if (ret) {
4599 dev_info(&pf->pdev->dev,
4600 "rebuild of vsi_idx %d failed: %d\n",
4601 v, ret);
4602 goto end_reconstitute;
4603 }
4604 i40e_vsi_reset_stats(vsi);
4605 }
4606 }
4607
4608 /* create any VEBs attached to this VEB - RECURSION */
4609 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
4610 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
4611 pf->veb[veb_idx]->uplink_seid = veb->seid;
4612 ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
4613 if (ret)
4614 break;
4615 }
4616 }
4617
4618end_reconstitute:
4619 return ret;
4620}
4621
4622/**
4623 * i40e_get_capabilities - get info about the HW
4624 * @pf: the PF struct
4625 **/
4626static int i40e_get_capabilities(struct i40e_pf *pf)
4627{
4628 struct i40e_aqc_list_capabilities_element_resp *cap_buf;
4629 u16 data_size;
4630 int buf_len;
4631 int err;
4632
4633 buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
4634 do {
4635 cap_buf = kzalloc(buf_len, GFP_KERNEL);
4636 if (!cap_buf)
4637 return -ENOMEM;
4638
4639 /* this loads the data into the hw struct for us */
4640 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
4641 &data_size,
4642 i40e_aqc_opc_list_func_capabilities,
4643 NULL);
4644 /* data loaded, buffer no longer needed */
4645 kfree(cap_buf);
4646
4647 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
4648 /* retry with a larger buffer */
4649 buf_len = data_size;
4650 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
4651 dev_info(&pf->pdev->dev,
4652 "capability discovery failed: aq=%d\n",
4653 pf->hw.aq.asq_last_status);
4654 return -ENODEV;
4655 }
4656 } while (err);
4657
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00004658 if (pf->hw.revision_id == 0 && pf->hw.func_caps.npar_enable) {
4659 pf->hw.func_caps.num_msix_vectors += 1;
4660 pf->hw.func_caps.num_tx_qp =
4661 min_t(int, pf->hw.func_caps.num_tx_qp,
4662 I40E_MAX_NPAR_QPS);
4663 }
4664
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004665 if (pf->hw.debug_mask & I40E_DEBUG_USER)
4666 dev_info(&pf->pdev->dev,
4667 "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",
4668 pf->hw.pf_id, pf->hw.func_caps.num_vfs,
4669 pf->hw.func_caps.num_msix_vectors,
4670 pf->hw.func_caps.num_msix_vectors_vf,
4671 pf->hw.func_caps.fd_filters_guaranteed,
4672 pf->hw.func_caps.fd_filters_best_effort,
4673 pf->hw.func_caps.num_tx_qp,
4674 pf->hw.func_caps.num_vsis);
4675
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00004676#define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
4677 + pf->hw.func_caps.num_vfs)
4678 if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
4679 dev_info(&pf->pdev->dev,
4680 "got num_vsis %d, setting num_vsis to %d\n",
4681 pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
4682 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
4683 }
4684
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004685 return 0;
4686}
4687
4688/**
4689 * i40e_fdir_setup - initialize the Flow Director resources
4690 * @pf: board private structure
4691 **/
4692static void i40e_fdir_setup(struct i40e_pf *pf)
4693{
4694 struct i40e_vsi *vsi;
4695 bool new_vsi = false;
4696 int err, i;
4697
Shannon Nelson958a3e32013-09-28 07:13:28 +00004698 if (!(pf->flags & (I40E_FLAG_FDIR_ENABLED |
4699 I40E_FLAG_FDIR_ATR_ENABLED)))
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004700 return;
4701
4702 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
4703
4704 /* find existing or make new FDIR VSI */
4705 vsi = NULL;
4706 for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4707 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR)
4708 vsi = pf->vsi[i];
4709 if (!vsi) {
4710 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR, pf->mac_seid, 0);
4711 if (!vsi) {
4712 dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
4713 pf->flags &= ~I40E_FLAG_FDIR_ENABLED;
4714 return;
4715 }
4716 new_vsi = true;
4717 }
4718 WARN_ON(vsi->base_queue != I40E_FDIR_RING);
4719 i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_rings);
4720
4721 err = i40e_vsi_setup_tx_resources(vsi);
4722 if (!err)
4723 err = i40e_vsi_setup_rx_resources(vsi);
4724 if (!err)
4725 err = i40e_vsi_configure(vsi);
4726 if (!err && new_vsi) {
4727 char int_name[IFNAMSIZ + 9];
4728 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4729 dev_driver_string(&pf->pdev->dev));
4730 err = i40e_vsi_request_irq(vsi, int_name);
4731 }
4732 if (!err)
4733 err = i40e_up_complete(vsi);
4734
4735 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4736}
4737
4738/**
4739 * i40e_fdir_teardown - release the Flow Director resources
4740 * @pf: board private structure
4741 **/
4742static void i40e_fdir_teardown(struct i40e_pf *pf)
4743{
4744 int i;
4745
4746 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
4747 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
4748 i40e_vsi_release(pf->vsi[i]);
4749 break;
4750 }
4751 }
4752}
4753
4754/**
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004755 * i40e_prep_for_reset - prep for the core to reset
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004756 * @pf: board private structure
4757 *
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004758 * Close up the VFs and other things in prep for pf Reset.
4759 **/
4760static int i40e_prep_for_reset(struct i40e_pf *pf)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004761{
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004762 struct i40e_hw *hw = &pf->hw;
4763 i40e_status ret;
4764 u32 v;
4765
4766 clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
4767 if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004768 return 0;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004769
4770 dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n");
4771
Anjali Singhai Jain37f0be62013-11-28 06:39:46 +00004772 if (i40e_check_asq_alive(hw))
4773 i40e_vc_notify_reset(pf);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004774
4775 /* quiesce the VSIs and their queues that are not already DOWN */
4776 i40e_pf_quiesce_all_vsi(pf);
4777
4778 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4779 if (pf->vsi[v])
4780 pf->vsi[v]->seid = 0;
4781 }
4782
4783 i40e_shutdown_adminq(&pf->hw);
4784
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004785 /* call shutdown HMC */
4786 ret = i40e_shutdown_lan_hmc(hw);
4787 if (ret) {
4788 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
4789 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
4790 }
4791 return ret;
4792}
4793
4794/**
4795 * i40e_reset_and_rebuild - reset and rebuid using a saved config
4796 * @pf: board private structure
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00004797 * @reinit: if the Main VSI needs to re-initialized.
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004798 **/
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00004799static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004800{
4801 struct i40e_driver_version dv;
4802 struct i40e_hw *hw = &pf->hw;
4803 i40e_status ret;
4804 u32 v;
4805
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004806 /* Now we wait for GRST to settle out.
4807 * We don't have to delete the VEBs or VSIs from the hw switch
4808 * because the reset will make them disappear.
4809 */
4810 ret = i40e_pf_reset(hw);
4811 if (ret)
4812 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
4813 pf->pfr_count++;
4814
4815 if (test_bit(__I40E_DOWN, &pf->state))
4816 goto end_core_reset;
4817 dev_info(&pf->pdev->dev, "Rebuilding internal switch\n");
4818
4819 /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
4820 ret = i40e_init_adminq(&pf->hw);
4821 if (ret) {
4822 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
4823 goto end_core_reset;
4824 }
4825
4826 ret = i40e_get_capabilities(pf);
4827 if (ret) {
4828 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
4829 ret);
4830 goto end_core_reset;
4831 }
4832
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004833 ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
4834 hw->func_caps.num_rx_qp,
4835 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
4836 if (ret) {
4837 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
4838 goto end_core_reset;
4839 }
4840 ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
4841 if (ret) {
4842 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
4843 goto end_core_reset;
4844 }
4845
4846 /* do basic switch setup */
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00004847 ret = i40e_setup_pf_switch(pf, reinit);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004848 if (ret)
4849 goto end_core_reset;
4850
4851 /* Rebuild the VSIs and VEBs that existed before reset.
4852 * They are still in our local switch element arrays, so only
4853 * need to rebuild the switch model in the HW.
4854 *
4855 * If there were VEBs but the reconstitution failed, we'll try
4856 * try to recover minimal use by getting the basic PF VSI working.
4857 */
4858 if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
4859 dev_info(&pf->pdev->dev, "attempting to rebuild switch\n");
4860 /* find the one VEB connected to the MAC, and find orphans */
4861 for (v = 0; v < I40E_MAX_VEB; v++) {
4862 if (!pf->veb[v])
4863 continue;
4864
4865 if (pf->veb[v]->uplink_seid == pf->mac_seid ||
4866 pf->veb[v]->uplink_seid == 0) {
4867 ret = i40e_reconstitute_veb(pf->veb[v]);
4868
4869 if (!ret)
4870 continue;
4871
4872 /* If Main VEB failed, we're in deep doodoo,
4873 * so give up rebuilding the switch and set up
4874 * for minimal rebuild of PF VSI.
4875 * If orphan failed, we'll report the error
4876 * but try to keep going.
4877 */
4878 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
4879 dev_info(&pf->pdev->dev,
4880 "rebuild of switch failed: %d, will try to set up simple PF connection\n",
4881 ret);
4882 pf->vsi[pf->lan_vsi]->uplink_seid
4883 = pf->mac_seid;
4884 break;
4885 } else if (pf->veb[v]->uplink_seid == 0) {
4886 dev_info(&pf->pdev->dev,
4887 "rebuild of orphan VEB failed: %d\n",
4888 ret);
4889 }
4890 }
4891 }
4892 }
4893
4894 if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
4895 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
4896 /* no VEB, so rebuild only the Main VSI */
4897 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
4898 if (ret) {
4899 dev_info(&pf->pdev->dev,
4900 "rebuild of Main VSI failed: %d\n", ret);
4901 goto end_core_reset;
4902 }
4903 }
4904
4905 /* reinit the misc interrupt */
4906 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4907 ret = i40e_setup_misc_vector(pf);
4908
4909 /* restart the VSIs that were rebuilt and running before the reset */
4910 i40e_pf_unquiesce_all_vsi(pf);
4911
4912 /* tell the firmware that we're starting */
4913 dv.major_version = DRV_VERSION_MAJOR;
4914 dv.minor_version = DRV_VERSION_MINOR;
4915 dv.build_version = DRV_VERSION_BUILD;
4916 dv.subbuild_version = 0;
4917 i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
4918
4919 dev_info(&pf->pdev->dev, "PF reset done\n");
4920
4921end_core_reset:
4922 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
4923}
4924
4925/**
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004926 * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
4927 * @pf: board private structure
4928 *
4929 * Close up the VFs and other things in prep for a Core Reset,
4930 * then get ready to rebuild the world.
4931 **/
4932static void i40e_handle_reset_warning(struct i40e_pf *pf)
4933{
4934 i40e_status ret;
4935
4936 ret = i40e_prep_for_reset(pf);
4937 if (!ret)
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00004938 i40e_reset_and_rebuild(pf, false);
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00004939}
4940
4941/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00004942 * i40e_handle_mdd_event
4943 * @pf: pointer to the pf structure
4944 *
4945 * Called from the MDD irq handler to identify possibly malicious vfs
4946 **/
4947static void i40e_handle_mdd_event(struct i40e_pf *pf)
4948{
4949 struct i40e_hw *hw = &pf->hw;
4950 bool mdd_detected = false;
4951 struct i40e_vf *vf;
4952 u32 reg;
4953 int i;
4954
4955 if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
4956 return;
4957
4958 /* find what triggered the MDD event */
4959 reg = rd32(hw, I40E_GL_MDET_TX);
4960 if (reg & I40E_GL_MDET_TX_VALID_MASK) {
4961 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
4962 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
4963 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
4964 >> I40E_GL_MDET_TX_EVENT_SHIFT;
4965 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
4966 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
4967 dev_info(&pf->pdev->dev,
4968 "Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n",
4969 event, queue, func);
4970 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
4971 mdd_detected = true;
4972 }
4973 reg = rd32(hw, I40E_GL_MDET_RX);
4974 if (reg & I40E_GL_MDET_RX_VALID_MASK) {
4975 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
4976 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
4977 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
4978 >> I40E_GL_MDET_RX_EVENT_SHIFT;
4979 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
4980 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
4981 dev_info(&pf->pdev->dev,
4982 "Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n",
4983 event, queue, func);
4984 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
4985 mdd_detected = true;
4986 }
4987
4988 /* see if one of the VFs needs its hand slapped */
4989 for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
4990 vf = &(pf->vf[i]);
4991 reg = rd32(hw, I40E_VP_MDET_TX(i));
4992 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
4993 wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
4994 vf->num_mdd_events++;
4995 dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
4996 }
4997
4998 reg = rd32(hw, I40E_VP_MDET_RX(i));
4999 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5000 wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5001 vf->num_mdd_events++;
5002 dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5003 }
5004
5005 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5006 dev_info(&pf->pdev->dev,
5007 "Too many MDD events on VF %d, disabled\n", i);
5008 dev_info(&pf->pdev->dev,
5009 "Use PF Control I/F to re-enable the VF\n");
5010 set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5011 }
5012 }
5013
5014 /* re-enable mdd interrupt cause */
5015 clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5016 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5017 reg |= I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5018 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5019 i40e_flush(hw);
5020}
5021
Jeff Kirshera1c9a9d2013-12-28 07:32:18 +00005022#ifdef CONFIG_I40E_VXLAN
5023/**
5024 * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5025 * @pf: board private structure
5026 **/
5027static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5028{
5029 const int vxlan_hdr_qwords = 4;
5030 struct i40e_hw *hw = &pf->hw;
5031 i40e_status ret;
5032 u8 filter_index;
5033 __be16 port;
5034 int i;
5035
5036 if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5037 return;
5038
5039 pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5040
5041 for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5042 if (pf->pending_vxlan_bitmap & (1 << i)) {
5043 pf->pending_vxlan_bitmap &= ~(1 << i);
5044 port = pf->vxlan_ports[i];
5045 ret = port ?
5046 i40e_aq_add_udp_tunnel(hw, ntohs(port),
5047 vxlan_hdr_qwords,
5048 I40E_AQC_TUNNEL_TYPE_VXLAN,
5049 &filter_index, NULL)
5050 : i40e_aq_del_udp_tunnel(hw, i, NULL);
5051
5052 if (ret) {
5053 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5054 port ? "adding" : "deleting",
5055 ntohs(port), port ? i : i);
5056
5057 pf->vxlan_ports[i] = 0;
5058 } else {
5059 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5060 port ? "Added" : "Deleted",
5061 ntohs(port), port ? i : filter_index);
5062 }
5063 }
5064 }
5065}
5066
5067#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005068/**
5069 * i40e_service_task - Run the driver's async subtasks
5070 * @work: pointer to work_struct containing our data
5071 **/
5072static void i40e_service_task(struct work_struct *work)
5073{
5074 struct i40e_pf *pf = container_of(work,
5075 struct i40e_pf,
5076 service_task);
5077 unsigned long start_time = jiffies;
5078
5079 i40e_reset_subtask(pf);
5080 i40e_handle_mdd_event(pf);
5081 i40e_vc_process_vflr_event(pf);
5082 i40e_watchdog_subtask(pf);
5083 i40e_fdir_reinit_subtask(pf);
5084 i40e_check_hang_subtask(pf);
5085 i40e_sync_filters_subtask(pf);
Jeff Kirshera1c9a9d2013-12-28 07:32:18 +00005086#ifdef CONFIG_I40E_VXLAN
5087 i40e_sync_vxlan_filters_subtask(pf);
5088#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005089 i40e_clean_adminq_subtask(pf);
5090
5091 i40e_service_event_complete(pf);
5092
5093 /* If the tasks have taken longer than one timer cycle or there
5094 * is more work to be done, reschedule the service task now
5095 * rather than wait for the timer to tick again.
5096 */
5097 if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5098 test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state) ||
5099 test_bit(__I40E_MDD_EVENT_PENDING, &pf->state) ||
5100 test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5101 i40e_service_event_schedule(pf);
5102}
5103
5104/**
5105 * i40e_service_timer - timer callback
5106 * @data: pointer to PF struct
5107 **/
5108static void i40e_service_timer(unsigned long data)
5109{
5110 struct i40e_pf *pf = (struct i40e_pf *)data;
5111
5112 mod_timer(&pf->service_timer,
5113 round_jiffies(jiffies + pf->service_timer_period));
5114 i40e_service_event_schedule(pf);
5115}
5116
5117/**
5118 * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5119 * @vsi: the VSI being configured
5120 **/
5121static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5122{
5123 struct i40e_pf *pf = vsi->back;
5124
5125 switch (vsi->type) {
5126 case I40E_VSI_MAIN:
5127 vsi->alloc_queue_pairs = pf->num_lan_qps;
5128 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5129 I40E_REQ_DESCRIPTOR_MULTIPLE);
5130 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5131 vsi->num_q_vectors = pf->num_lan_msix;
5132 else
5133 vsi->num_q_vectors = 1;
5134
5135 break;
5136
5137 case I40E_VSI_FDIR:
5138 vsi->alloc_queue_pairs = 1;
5139 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5140 I40E_REQ_DESCRIPTOR_MULTIPLE);
5141 vsi->num_q_vectors = 1;
5142 break;
5143
5144 case I40E_VSI_VMDQ2:
5145 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5146 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5147 I40E_REQ_DESCRIPTOR_MULTIPLE);
5148 vsi->num_q_vectors = pf->num_vmdq_msix;
5149 break;
5150
5151 case I40E_VSI_SRIOV:
5152 vsi->alloc_queue_pairs = pf->num_vf_qps;
5153 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5154 I40E_REQ_DESCRIPTOR_MULTIPLE);
5155 break;
5156
5157 default:
5158 WARN_ON(1);
5159 return -ENODATA;
5160 }
5161
5162 return 0;
5163}
5164
5165/**
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005166 * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5167 * @type: VSI pointer
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005168 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005169 *
5170 * On error: returns error code (negative)
5171 * On success: returns 0
5172 **/
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005173static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005174{
5175 int size;
5176 int ret = 0;
5177
Shannon Nelsonac6c5e32013-11-20 10:02:57 +00005178 /* allocate memory for both Tx and Rx ring pointers */
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005179 size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5180 vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5181 if (!vsi->tx_rings)
5182 return -ENOMEM;
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005183 vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5184
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005185 if (alloc_qvectors) {
5186 /* allocate memory for q_vector pointers */
5187 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5188 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5189 if (!vsi->q_vectors) {
5190 ret = -ENOMEM;
5191 goto err_vectors;
5192 }
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005193 }
5194 return ret;
5195
5196err_vectors:
5197 kfree(vsi->tx_rings);
5198 return ret;
5199}
5200
5201/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005202 * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5203 * @pf: board private structure
5204 * @type: type of VSI
5205 *
5206 * On error: returns error code (negative)
5207 * On success: returns vsi index in PF (positive)
5208 **/
5209static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5210{
5211 int ret = -ENODEV;
5212 struct i40e_vsi *vsi;
5213 int vsi_idx;
5214 int i;
5215
5216 /* Need to protect the allocation of the VSIs at the PF level */
5217 mutex_lock(&pf->switch_mutex);
5218
5219 /* VSI list may be fragmented if VSI creation/destruction has
5220 * been happening. We can afford to do a quick scan to look
5221 * for any free VSIs in the list.
5222 *
5223 * find next empty vsi slot, looping back around if necessary
5224 */
5225 i = pf->next_vsi;
5226 while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5227 i++;
5228 if (i >= pf->hw.func_caps.num_vsis) {
5229 i = 0;
5230 while (i < pf->next_vsi && pf->vsi[i])
5231 i++;
5232 }
5233
5234 if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5235 vsi_idx = i; /* Found one! */
5236 } else {
5237 ret = -ENODEV;
Alexander Duyck493fb302013-09-28 07:01:44 +00005238 goto unlock_pf; /* out of VSI slots! */
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005239 }
5240 pf->next_vsi = ++i;
5241
5242 vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5243 if (!vsi) {
5244 ret = -ENOMEM;
Alexander Duyck493fb302013-09-28 07:01:44 +00005245 goto unlock_pf;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005246 }
5247 vsi->type = type;
5248 vsi->back = pf;
5249 set_bit(__I40E_DOWN, &vsi->state);
5250 vsi->flags = 0;
5251 vsi->idx = vsi_idx;
5252 vsi->rx_itr_setting = pf->rx_itr_default;
5253 vsi->tx_itr_setting = pf->tx_itr_default;
5254 vsi->netdev_registered = false;
5255 vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5256 INIT_LIST_HEAD(&vsi->mac_filter_list);
5257
Alexander Duyck9f65e152013-09-28 06:00:58 +00005258 ret = i40e_set_num_rings_in_vsi(vsi);
5259 if (ret)
5260 goto err_rings;
5261
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005262 ret = i40e_vsi_alloc_arrays(vsi, true);
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005263 if (ret)
Alexander Duyck9f65e152013-09-28 06:00:58 +00005264 goto err_rings;
Alexander Duyck493fb302013-09-28 07:01:44 +00005265
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005266 /* Setup default MSIX irq handler for VSI */
5267 i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5268
5269 pf->vsi[vsi_idx] = vsi;
5270 ret = vsi_idx;
Alexander Duyck493fb302013-09-28 07:01:44 +00005271 goto unlock_pf;
5272
Alexander Duyck9f65e152013-09-28 06:00:58 +00005273err_rings:
Alexander Duyck493fb302013-09-28 07:01:44 +00005274 pf->next_vsi = i - 1;
5275 kfree(vsi);
5276unlock_pf:
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005277 mutex_unlock(&pf->switch_mutex);
5278 return ret;
5279}
5280
5281/**
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005282 * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5283 * @type: VSI pointer
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005284 * @free_qvectors: a bool to specify if q_vectors need to be freed.
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005285 *
5286 * On error: returns error code (negative)
5287 * On success: returns 0
5288 **/
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005289static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005290{
5291 /* free the ring and vector containers */
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005292 if (free_qvectors) {
5293 kfree(vsi->q_vectors);
5294 vsi->q_vectors = NULL;
5295 }
Anjali Singhai Jainf650a382013-11-20 10:02:55 +00005296 kfree(vsi->tx_rings);
5297 vsi->tx_rings = NULL;
5298 vsi->rx_rings = NULL;
5299}
5300
5301/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005302 * i40e_vsi_clear - Deallocate the VSI provided
5303 * @vsi: the VSI being un-configured
5304 **/
5305static int i40e_vsi_clear(struct i40e_vsi *vsi)
5306{
5307 struct i40e_pf *pf;
5308
5309 if (!vsi)
5310 return 0;
5311
5312 if (!vsi->back)
5313 goto free_vsi;
5314 pf = vsi->back;
5315
5316 mutex_lock(&pf->switch_mutex);
5317 if (!pf->vsi[vsi->idx]) {
5318 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5319 vsi->idx, vsi->idx, vsi, vsi->type);
5320 goto unlock_vsi;
5321 }
5322
5323 if (pf->vsi[vsi->idx] != vsi) {
5324 dev_err(&pf->pdev->dev,
5325 "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5326 pf->vsi[vsi->idx]->idx,
5327 pf->vsi[vsi->idx],
5328 pf->vsi[vsi->idx]->type,
5329 vsi->idx, vsi, vsi->type);
5330 goto unlock_vsi;
5331 }
5332
5333 /* updates the pf for this cleared vsi */
5334 i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5335 i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5336
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00005337 i40e_vsi_free_arrays(vsi, true);
Alexander Duyck493fb302013-09-28 07:01:44 +00005338
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005339 pf->vsi[vsi->idx] = NULL;
5340 if (vsi->idx < pf->next_vsi)
5341 pf->next_vsi = vsi->idx;
5342
5343unlock_vsi:
5344 mutex_unlock(&pf->switch_mutex);
5345free_vsi:
5346 kfree(vsi);
5347
5348 return 0;
5349}
5350
5351/**
Alexander Duyck9f65e152013-09-28 06:00:58 +00005352 * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5353 * @vsi: the VSI being cleaned
5354 **/
Shannon Nelsonbe1d5ee2013-11-28 06:39:23 +00005355static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
Alexander Duyck9f65e152013-09-28 06:00:58 +00005356{
5357 int i;
5358
Greg Rose8e9dca52013-12-18 13:45:53 +00005359 if (vsi->tx_rings && vsi->tx_rings[0]) {
Neerav Parikhd7397642013-11-28 06:39:37 +00005360 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
Mitch Williams00403f02013-09-28 07:13:13 +00005361 kfree_rcu(vsi->tx_rings[i], rcu);
5362 vsi->tx_rings[i] = NULL;
5363 vsi->rx_rings[i] = NULL;
5364 }
Shannon Nelsonbe1d5ee2013-11-28 06:39:23 +00005365 }
Alexander Duyck9f65e152013-09-28 06:00:58 +00005366}
5367
5368/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005369 * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5370 * @vsi: the VSI being configured
5371 **/
5372static int i40e_alloc_rings(struct i40e_vsi *vsi)
5373{
5374 struct i40e_pf *pf = vsi->back;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005375 int i;
5376
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005377 /* Set basic values in the rings to be used later during open() */
Neerav Parikhd7397642013-11-28 06:39:37 +00005378 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
Alexander Duyck9f65e152013-09-28 06:00:58 +00005379 struct i40e_ring *tx_ring;
5380 struct i40e_ring *rx_ring;
5381
Shannon Nelsonac6c5e32013-11-20 10:02:57 +00005382 /* allocate space for both Tx and Rx in one shot */
Alexander Duyck9f65e152013-09-28 06:00:58 +00005383 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5384 if (!tx_ring)
5385 goto err_out;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005386
5387 tx_ring->queue_index = i;
5388 tx_ring->reg_idx = vsi->base_queue + i;
5389 tx_ring->ring_active = false;
5390 tx_ring->vsi = vsi;
5391 tx_ring->netdev = vsi->netdev;
5392 tx_ring->dev = &pf->pdev->dev;
5393 tx_ring->count = vsi->num_desc;
5394 tx_ring->size = 0;
5395 tx_ring->dcb_tc = 0;
Alexander Duyck9f65e152013-09-28 06:00:58 +00005396 vsi->tx_rings[i] = tx_ring;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005397
Alexander Duyck9f65e152013-09-28 06:00:58 +00005398 rx_ring = &tx_ring[1];
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005399 rx_ring->queue_index = i;
5400 rx_ring->reg_idx = vsi->base_queue + i;
5401 rx_ring->ring_active = false;
5402 rx_ring->vsi = vsi;
5403 rx_ring->netdev = vsi->netdev;
5404 rx_ring->dev = &pf->pdev->dev;
5405 rx_ring->count = vsi->num_desc;
5406 rx_ring->size = 0;
5407 rx_ring->dcb_tc = 0;
5408 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
5409 set_ring_16byte_desc_enabled(rx_ring);
5410 else
5411 clear_ring_16byte_desc_enabled(rx_ring);
Alexander Duyck9f65e152013-09-28 06:00:58 +00005412 vsi->rx_rings[i] = rx_ring;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005413 }
5414
5415 return 0;
Alexander Duyck9f65e152013-09-28 06:00:58 +00005416
5417err_out:
5418 i40e_vsi_clear_rings(vsi);
5419 return -ENOMEM;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005420}
5421
5422/**
5423 * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
5424 * @pf: board private structure
5425 * @vectors: the number of MSI-X vectors to request
5426 *
5427 * Returns the number of vectors reserved, or error
5428 **/
5429static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
5430{
5431 int err = 0;
5432
5433 pf->num_msix_entries = 0;
5434 while (vectors >= I40E_MIN_MSIX) {
5435 err = pci_enable_msix(pf->pdev, pf->msix_entries, vectors);
5436 if (err == 0) {
5437 /* good to go */
5438 pf->num_msix_entries = vectors;
5439 break;
5440 } else if (err < 0) {
5441 /* total failure */
5442 dev_info(&pf->pdev->dev,
5443 "MSI-X vector reservation failed: %d\n", err);
5444 vectors = 0;
5445 break;
5446 } else {
5447 /* err > 0 is the hint for retry */
5448 dev_info(&pf->pdev->dev,
5449 "MSI-X vectors wanted %d, retrying with %d\n",
5450 vectors, err);
5451 vectors = err;
5452 }
5453 }
5454
5455 if (vectors > 0 && vectors < I40E_MIN_MSIX) {
5456 dev_info(&pf->pdev->dev,
5457 "Couldn't get enough vectors, only %d available\n",
5458 vectors);
5459 vectors = 0;
5460 }
5461
5462 return vectors;
5463}
5464
5465/**
5466 * i40e_init_msix - Setup the MSIX capability
5467 * @pf: board private structure
5468 *
5469 * Work with the OS to set up the MSIX vectors needed.
5470 *
5471 * Returns 0 on success, negative on failure
5472 **/
5473static int i40e_init_msix(struct i40e_pf *pf)
5474{
5475 i40e_status err = 0;
5476 struct i40e_hw *hw = &pf->hw;
5477 int v_budget, i;
5478 int vec;
5479
5480 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
5481 return -ENODEV;
5482
5483 /* The number of vectors we'll request will be comprised of:
5484 * - Add 1 for "other" cause for Admin Queue events, etc.
5485 * - The number of LAN queue pairs
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00005486 * - Queues being used for RSS.
5487 * We don't need as many as max_rss_size vectors.
5488 * use rss_size instead in the calculation since that
5489 * is governed by number of cpus in the system.
5490 * - assumes symmetric Tx/Rx pairing
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005491 * - The number of VMDq pairs
5492 * Once we count this up, try the request.
5493 *
5494 * If we can't get what we want, we'll simplify to nearly nothing
5495 * and try again. If that still fails, we punt.
5496 */
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00005497 pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005498 pf->num_vmdq_msix = pf->num_vmdq_qps;
5499 v_budget = 1 + pf->num_lan_msix;
5500 v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
5501 if (pf->flags & I40E_FLAG_FDIR_ENABLED)
5502 v_budget++;
5503
5504 /* Scale down if necessary, and the rings will share vectors */
5505 v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
5506
5507 pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
5508 GFP_KERNEL);
5509 if (!pf->msix_entries)
5510 return -ENOMEM;
5511
5512 for (i = 0; i < v_budget; i++)
5513 pf->msix_entries[i].entry = i;
5514 vec = i40e_reserve_msix_vectors(pf, v_budget);
5515 if (vec < I40E_MIN_MSIX) {
5516 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
5517 kfree(pf->msix_entries);
5518 pf->msix_entries = NULL;
5519 return -ENODEV;
5520
5521 } else if (vec == I40E_MIN_MSIX) {
5522 /* Adjust for minimal MSIX use */
5523 dev_info(&pf->pdev->dev, "Features disabled, not enough MSIX vectors\n");
5524 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
5525 pf->num_vmdq_vsis = 0;
5526 pf->num_vmdq_qps = 0;
5527 pf->num_vmdq_msix = 0;
5528 pf->num_lan_qps = 1;
5529 pf->num_lan_msix = 1;
5530
5531 } else if (vec != v_budget) {
5532 /* Scale vector usage down */
5533 pf->num_vmdq_msix = 1; /* force VMDqs to only one vector */
5534 vec--; /* reserve the misc vector */
5535
5536 /* partition out the remaining vectors */
5537 switch (vec) {
5538 case 2:
5539 pf->num_vmdq_vsis = 1;
5540 pf->num_lan_msix = 1;
5541 break;
5542 case 3:
5543 pf->num_vmdq_vsis = 1;
5544 pf->num_lan_msix = 2;
5545 break;
5546 default:
5547 pf->num_lan_msix = min_t(int, (vec / 2),
5548 pf->num_lan_qps);
5549 pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
5550 I40E_DEFAULT_NUM_VMDQ_VSI);
5551 break;
5552 }
5553 }
5554
5555 return err;
5556}
5557
5558/**
Alexander Duyck493fb302013-09-28 07:01:44 +00005559 * i40e_alloc_q_vector - Allocate memory for a single interrupt vector
5560 * @vsi: the VSI being configured
5561 * @v_idx: index of the vector in the vsi struct
5562 *
5563 * We allocate one q_vector. If allocation fails we return -ENOMEM.
5564 **/
5565static int i40e_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
5566{
5567 struct i40e_q_vector *q_vector;
5568
5569 /* allocate q_vector */
5570 q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
5571 if (!q_vector)
5572 return -ENOMEM;
5573
5574 q_vector->vsi = vsi;
5575 q_vector->v_idx = v_idx;
5576 cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
5577 if (vsi->netdev)
5578 netif_napi_add(vsi->netdev, &q_vector->napi,
5579 i40e_napi_poll, vsi->work_limit);
5580
Alexander Duyckcd0b6fa2013-09-28 06:00:53 +00005581 q_vector->rx.latency_range = I40E_LOW_LATENCY;
5582 q_vector->tx.latency_range = I40E_LOW_LATENCY;
5583
Alexander Duyck493fb302013-09-28 07:01:44 +00005584 /* tie q_vector and vsi together */
5585 vsi->q_vectors[v_idx] = q_vector;
5586
5587 return 0;
5588}
5589
5590/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005591 * i40e_alloc_q_vectors - Allocate memory for interrupt vectors
5592 * @vsi: the VSI being configured
5593 *
5594 * We allocate one q_vector per queue interrupt. If allocation fails we
5595 * return -ENOMEM.
5596 **/
5597static int i40e_alloc_q_vectors(struct i40e_vsi *vsi)
5598{
5599 struct i40e_pf *pf = vsi->back;
5600 int v_idx, num_q_vectors;
Alexander Duyck493fb302013-09-28 07:01:44 +00005601 int err;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005602
5603 /* if not MSIX, give the one vector only to the LAN VSI */
5604 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5605 num_q_vectors = vsi->num_q_vectors;
5606 else if (vsi == pf->vsi[pf->lan_vsi])
5607 num_q_vectors = 1;
5608 else
5609 return -EINVAL;
5610
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005611 for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
Alexander Duyck493fb302013-09-28 07:01:44 +00005612 err = i40e_alloc_q_vector(vsi, v_idx);
5613 if (err)
5614 goto err_out;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005615 }
5616
5617 return 0;
Alexander Duyck493fb302013-09-28 07:01:44 +00005618
5619err_out:
5620 while (v_idx--)
5621 i40e_free_q_vector(vsi, v_idx);
5622
5623 return err;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005624}
5625
5626/**
5627 * i40e_init_interrupt_scheme - Determine proper interrupt scheme
5628 * @pf: board private structure to initialize
5629 **/
5630static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
5631{
5632 int err = 0;
5633
5634 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
5635 err = i40e_init_msix(pf);
5636 if (err) {
Shannon Nelson958a3e32013-09-28 07:13:28 +00005637 pf->flags &= ~(I40E_FLAG_MSIX_ENABLED |
5638 I40E_FLAG_RSS_ENABLED |
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005639 I40E_FLAG_DCB_ENABLED |
5640 I40E_FLAG_SRIOV_ENABLED |
5641 I40E_FLAG_FDIR_ENABLED |
5642 I40E_FLAG_FDIR_ATR_ENABLED |
5643 I40E_FLAG_VMDQ_ENABLED);
5644
5645 /* rework the queue expectations without MSIX */
5646 i40e_determine_queue_usage(pf);
5647 }
5648 }
5649
5650 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
5651 (pf->flags & I40E_FLAG_MSI_ENABLED)) {
Shannon Nelson958a3e32013-09-28 07:13:28 +00005652 dev_info(&pf->pdev->dev, "MSIX not available, trying MSI\n");
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005653 err = pci_enable_msi(pf->pdev);
5654 if (err) {
Shannon Nelson958a3e32013-09-28 07:13:28 +00005655 dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005656 pf->flags &= ~I40E_FLAG_MSI_ENABLED;
5657 }
5658 }
5659
Shannon Nelson958a3e32013-09-28 07:13:28 +00005660 if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
5661 dev_info(&pf->pdev->dev, "MSIX and MSI not available, falling back to Legacy IRQ\n");
5662
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005663 /* track first vector for misc interrupts */
5664 err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
5665}
5666
5667/**
5668 * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
5669 * @pf: board private structure
5670 *
5671 * This sets up the handler for MSIX 0, which is used to manage the
5672 * non-queue interrupts, e.g. AdminQ and errors. This is not used
5673 * when in MSI or Legacy interrupt mode.
5674 **/
5675static int i40e_setup_misc_vector(struct i40e_pf *pf)
5676{
5677 struct i40e_hw *hw = &pf->hw;
5678 int err = 0;
5679
5680 /* Only request the irq if this is the first time through, and
5681 * not when we're rebuilding after a Reset
5682 */
5683 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
5684 err = request_irq(pf->msix_entries[0].vector,
5685 i40e_intr, 0, pf->misc_int_name, pf);
5686 if (err) {
5687 dev_info(&pf->pdev->dev,
5688 "request_irq for msix_misc failed: %d\n", err);
5689 return -EFAULT;
5690 }
5691 }
5692
5693 i40e_enable_misc_int_causes(hw);
5694
5695 /* associate no queues to the misc vector */
5696 wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
5697 wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
5698
5699 i40e_flush(hw);
5700
5701 i40e_irq_dynamic_enable_icr0(pf);
5702
5703 return err;
5704}
5705
5706/**
5707 * i40e_config_rss - Prepare for RSS if used
5708 * @pf: board private structure
5709 **/
5710static int i40e_config_rss(struct i40e_pf *pf)
5711{
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005712 /* Set of random keys generated using kernel random number generator */
5713 static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
5714 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
5715 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
5716 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
Anjali Singhai Jain4617e8c2013-11-20 10:02:56 +00005717 struct i40e_hw *hw = &pf->hw;
5718 u32 lut = 0;
5719 int i, j;
5720 u64 hena;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005721
5722 /* Fill out hash function seed */
5723 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
5724 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
5725
5726 /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
5727 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
5728 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
Mitch Williams12dc4fe2013-11-28 06:39:32 +00005729 hena |= I40E_DEFAULT_RSS_HENA;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005730 wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
5731 wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
5732
5733 /* Populate the LUT with max no. of queues in round robin fashion */
5734 for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
5735
5736 /* The assumption is that lan qp count will be the highest
5737 * qp count for any PF VSI that needs RSS.
5738 * If multiple VSIs need RSS support, all the qp counts
5739 * for those VSIs should be a power of 2 for RSS to work.
5740 * If LAN VSI is the only consumer for RSS then this requirement
5741 * is not necessary.
5742 */
5743 if (j == pf->rss_size)
5744 j = 0;
5745 /* lut = 4-byte sliding window of 4 lut entries */
5746 lut = (lut << 8) | (j &
5747 ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
5748 /* On i = 3, we have 4 entries in lut; write to the register */
5749 if ((i & 3) == 3)
5750 wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
5751 }
5752 i40e_flush(hw);
5753
5754 return 0;
5755}
5756
5757/**
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00005758 * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
5759 * @pf: board private structure
5760 * @queue_count: the requested queue count for rss.
5761 *
5762 * returns 0 if rss is not enabled, if enabled returns the final rss queue
5763 * count which may be different from the requested queue count.
5764 **/
5765int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
5766{
5767 if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
5768 return 0;
5769
5770 queue_count = min_t(int, queue_count, pf->rss_size_max);
5771 queue_count = rounddown_pow_of_two(queue_count);
5772
5773 if (queue_count != pf->rss_size) {
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00005774 i40e_prep_for_reset(pf);
5775
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00005776 pf->rss_size = queue_count;
5777
5778 i40e_reset_and_rebuild(pf, true);
5779 i40e_config_rss(pf);
5780 }
5781 dev_info(&pf->pdev->dev, "RSS count: %d\n", pf->rss_size);
5782 return pf->rss_size;
5783}
5784
5785/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005786 * i40e_sw_init - Initialize general software structures (struct i40e_pf)
5787 * @pf: board private structure to initialize
5788 *
5789 * i40e_sw_init initializes the Adapter private data structure.
5790 * Fields are initialized based on PCI device information and
5791 * OS network device settings (MTU size).
5792 **/
5793static int i40e_sw_init(struct i40e_pf *pf)
5794{
5795 int err = 0;
5796 int size;
5797
5798 pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
5799 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
Shannon Nelson27599972013-11-16 10:00:43 +00005800 pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005801 if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
5802 if (I40E_DEBUG_USER & debug)
5803 pf->hw.debug_mask = debug;
5804 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
5805 I40E_DEFAULT_MSG_ENABLE);
5806 }
5807
5808 /* Set default capability flags */
5809 pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
5810 I40E_FLAG_MSI_ENABLED |
5811 I40E_FLAG_MSIX_ENABLED |
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005812 I40E_FLAG_RX_1BUF_ENABLED;
5813
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00005814 /* Depending on PF configurations, it is possible that the RSS
5815 * maximum might end up larger than the available queues
5816 */
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005817 pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00005818 pf->rss_size_max = min_t(int, pf->rss_size_max,
5819 pf->hw.func_caps.num_tx_qp);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005820 if (pf->hw.func_caps.rss) {
5821 pf->flags |= I40E_FLAG_RSS_ENABLED;
Jesse Brandeburgbf051a32013-11-26 10:49:17 +00005822 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005823 } else {
5824 pf->rss_size = 1;
5825 }
5826
5827 if (pf->hw.func_caps.dcb)
5828 pf->num_tc_qps = I40E_DEFAULT_QUEUES_PER_TC;
5829 else
5830 pf->num_tc_qps = 0;
5831
5832 if (pf->hw.func_caps.fd) {
5833 /* FW/NVM is not yet fixed in this regard */
5834 if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
5835 (pf->hw.func_caps.fd_filters_best_effort > 0)) {
5836 pf->flags |= I40E_FLAG_FDIR_ATR_ENABLED;
5837 dev_info(&pf->pdev->dev,
5838 "Flow Director ATR mode Enabled\n");
5839 pf->flags |= I40E_FLAG_FDIR_ENABLED;
5840 dev_info(&pf->pdev->dev,
5841 "Flow Director Side Band mode Enabled\n");
5842 pf->fdir_pf_filter_count =
5843 pf->hw.func_caps.fd_filters_guaranteed;
5844 }
5845 } else {
5846 pf->fdir_pf_filter_count = 0;
5847 }
5848
5849 if (pf->hw.func_caps.vmdq) {
5850 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
5851 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
5852 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
5853 }
5854
5855 /* MFP mode enabled */
5856 if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
5857 pf->flags |= I40E_FLAG_MFP_ENABLED;
5858 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
5859 }
5860
5861#ifdef CONFIG_PCI_IOV
5862 if (pf->hw.func_caps.num_vfs) {
5863 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
5864 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
5865 pf->num_req_vfs = min_t(int,
5866 pf->hw.func_caps.num_vfs,
5867 I40E_MAX_VF_COUNT);
Anjali Singhai Jain4a38d092013-11-20 10:03:00 +00005868 dev_info(&pf->pdev->dev,
5869 "Number of VFs being requested for PF[%d] = %d\n",
5870 pf->hw.pf_id, pf->num_req_vfs);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00005871 }
5872#endif /* CONFIG_PCI_IOV */
5873 pf->eeprom_version = 0xDEAD;
5874 pf->lan_veb = I40E_NO_VEB;
5875 pf->lan_vsi = I40E_NO_VSI;
5876
5877 /* set up queue assignment tracking */
5878 size = sizeof(struct i40e_lump_tracking)
5879 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
5880 pf->qp_pile = kzalloc(size, GFP_KERNEL);
5881 if (!pf->qp_pile) {
5882 err = -ENOMEM;
5883 goto sw_init_done;
5884 }
5885 pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
5886 pf->qp_pile->search_hint = 0;
5887
5888 /* set up vector assignment tracking */
5889 size = sizeof(struct i40e_lump_tracking)
5890 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
5891 pf->irq_pile = kzalloc(size, GFP_KERNEL);
5892 if (!pf->irq_pile) {
5893 kfree(pf->qp_pile);
5894 err = -ENOMEM;
5895 goto sw_init_done;
5896 }
5897 pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
5898 pf->irq_pile->search_hint = 0;
5899
5900 mutex_init(&pf->switch_mutex);
5901
5902sw_init_done:
5903 return err;
5904}
5905
5906/**
5907 * i40e_set_features - set the netdev feature flags
5908 * @netdev: ptr to the netdev being adjusted
5909 * @features: the feature set that the stack is suggesting
5910 **/
5911static int i40e_set_features(struct net_device *netdev,
5912 netdev_features_t features)
5913{
5914 struct i40e_netdev_priv *np = netdev_priv(netdev);
5915 struct i40e_vsi *vsi = np->vsi;
5916
5917 if (features & NETIF_F_HW_VLAN_CTAG_RX)
5918 i40e_vlan_stripping_enable(vsi);
5919 else
5920 i40e_vlan_stripping_disable(vsi);
5921
5922 return 0;
5923}
5924
Jeff Kirshera1c9a9d2013-12-28 07:32:18 +00005925#ifdef CONFIG_I40E_VXLAN
5926/**
5927 * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
5928 * @pf: board private structure
5929 * @port: The UDP port to look up
5930 *
5931 * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
5932 **/
5933static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
5934{
5935 u8 i;
5936
5937 for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5938 if (pf->vxlan_ports[i] == port)
5939 return i;
5940 }
5941
5942 return i;
5943}
5944
5945/**
5946 * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
5947 * @netdev: This physical port's netdev
5948 * @sa_family: Socket Family that VXLAN is notifying us about
5949 * @port: New UDP port number that VXLAN started listening to
5950 **/
5951static void i40e_add_vxlan_port(struct net_device *netdev,
5952 sa_family_t sa_family, __be16 port)
5953{
5954 struct i40e_netdev_priv *np = netdev_priv(netdev);
5955 struct i40e_vsi *vsi = np->vsi;
5956 struct i40e_pf *pf = vsi->back;
5957 u8 next_idx;
5958 u8 idx;
5959
5960 if (sa_family == AF_INET6)
5961 return;
5962
5963 idx = i40e_get_vxlan_port_idx(pf, port);
5964
5965 /* Check if port already exists */
5966 if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
5967 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
5968 return;
5969 }
5970
5971 /* Now check if there is space to add the new port */
5972 next_idx = i40e_get_vxlan_port_idx(pf, 0);
5973
5974 if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
5975 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
5976 ntohs(port));
5977 return;
5978 }
5979
5980 /* New port: add it and mark its index in the bitmap */
5981 pf->vxlan_ports[next_idx] = port;
5982 pf->pending_vxlan_bitmap |= (1 << next_idx);
5983
5984 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
5985}
5986
5987/**
5988 * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
5989 * @netdev: This physical port's netdev
5990 * @sa_family: Socket Family that VXLAN is notifying us about
5991 * @port: UDP port number that VXLAN stopped listening to
5992 **/
5993static void i40e_del_vxlan_port(struct net_device *netdev,
5994 sa_family_t sa_family, __be16 port)
5995{
5996 struct i40e_netdev_priv *np = netdev_priv(netdev);
5997 struct i40e_vsi *vsi = np->vsi;
5998 struct i40e_pf *pf = vsi->back;
5999 u8 idx;
6000
6001 if (sa_family == AF_INET6)
6002 return;
6003
6004 idx = i40e_get_vxlan_port_idx(pf, port);
6005
6006 /* Check if port already exists */
6007 if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6008 /* if port exists, set it to 0 (mark for deletion)
6009 * and make it pending
6010 */
6011 pf->vxlan_ports[idx] = 0;
6012
6013 pf->pending_vxlan_bitmap |= (1 << idx);
6014
6015 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6016 } else {
6017 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6018 ntohs(port));
6019 }
6020}
6021
6022#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006023static const struct net_device_ops i40e_netdev_ops = {
6024 .ndo_open = i40e_open,
6025 .ndo_stop = i40e_close,
6026 .ndo_start_xmit = i40e_lan_xmit_frame,
6027 .ndo_get_stats64 = i40e_get_netdev_stats_struct,
6028 .ndo_set_rx_mode = i40e_set_rx_mode,
6029 .ndo_validate_addr = eth_validate_addr,
6030 .ndo_set_mac_address = i40e_set_mac,
6031 .ndo_change_mtu = i40e_change_mtu,
6032 .ndo_tx_timeout = i40e_tx_timeout,
6033 .ndo_vlan_rx_add_vid = i40e_vlan_rx_add_vid,
6034 .ndo_vlan_rx_kill_vid = i40e_vlan_rx_kill_vid,
6035#ifdef CONFIG_NET_POLL_CONTROLLER
6036 .ndo_poll_controller = i40e_netpoll,
6037#endif
6038 .ndo_setup_tc = i40e_setup_tc,
6039 .ndo_set_features = i40e_set_features,
6040 .ndo_set_vf_mac = i40e_ndo_set_vf_mac,
6041 .ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan,
6042 .ndo_set_vf_tx_rate = i40e_ndo_set_vf_bw,
6043 .ndo_get_vf_config = i40e_ndo_get_vf_config,
Jeff Kirshera1c9a9d2013-12-28 07:32:18 +00006044#ifdef CONFIG_I40E_VXLAN
6045 .ndo_add_vxlan_port = i40e_add_vxlan_port,
6046 .ndo_del_vxlan_port = i40e_del_vxlan_port,
6047#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006048};
6049
6050/**
6051 * i40e_config_netdev - Setup the netdev flags
6052 * @vsi: the VSI being configured
6053 *
6054 * Returns 0 on success, negative value on failure
6055 **/
6056static int i40e_config_netdev(struct i40e_vsi *vsi)
6057{
Greg Rose1a103702013-11-28 06:42:39 +00006058 u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006059 struct i40e_pf *pf = vsi->back;
6060 struct i40e_hw *hw = &pf->hw;
6061 struct i40e_netdev_priv *np;
6062 struct net_device *netdev;
6063 u8 mac_addr[ETH_ALEN];
6064 int etherdev_size;
6065
6066 etherdev_size = sizeof(struct i40e_netdev_priv);
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00006067 netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006068 if (!netdev)
6069 return -ENOMEM;
6070
6071 vsi->netdev = netdev;
6072 np = netdev_priv(netdev);
6073 np->vsi = vsi;
6074
6075 netdev->hw_enc_features = NETIF_F_IP_CSUM |
6076 NETIF_F_GSO_UDP_TUNNEL |
6077 NETIF_F_TSO |
6078 NETIF_F_SG;
6079
6080 netdev->features = NETIF_F_SG |
6081 NETIF_F_IP_CSUM |
6082 NETIF_F_SCTP_CSUM |
6083 NETIF_F_HIGHDMA |
6084 NETIF_F_GSO_UDP_TUNNEL |
6085 NETIF_F_HW_VLAN_CTAG_TX |
6086 NETIF_F_HW_VLAN_CTAG_RX |
6087 NETIF_F_HW_VLAN_CTAG_FILTER |
6088 NETIF_F_IPV6_CSUM |
6089 NETIF_F_TSO |
6090 NETIF_F_TSO6 |
6091 NETIF_F_RXCSUM |
6092 NETIF_F_RXHASH |
6093 0;
6094
6095 /* copy netdev features into list of user selectable features */
6096 netdev->hw_features |= netdev->features;
6097
6098 if (vsi->type == I40E_VSI_MAIN) {
6099 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6100 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6101 } else {
6102 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6103 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6104 pf->vsi[pf->lan_vsi]->netdev->name);
6105 random_ether_addr(mac_addr);
6106 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6107 }
Greg Rose1a103702013-11-28 06:42:39 +00006108 i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006109
6110 memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6111 memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6112 /* vlan gets same features (except vlan offload)
6113 * after any tweaks for specific VSI types
6114 */
6115 netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6116 NETIF_F_HW_VLAN_CTAG_RX |
6117 NETIF_F_HW_VLAN_CTAG_FILTER);
6118 netdev->priv_flags |= IFF_UNICAST_FLT;
6119 netdev->priv_flags |= IFF_SUPP_NOFCS;
6120 /* Setup netdev TC information */
6121 i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6122
6123 netdev->netdev_ops = &i40e_netdev_ops;
6124 netdev->watchdog_timeo = 5 * HZ;
6125 i40e_set_ethtool_ops(netdev);
6126
6127 return 0;
6128}
6129
6130/**
6131 * i40e_vsi_delete - Delete a VSI from the switch
6132 * @vsi: the VSI being removed
6133 *
6134 * Returns 0 on success, negative value on failure
6135 **/
6136static void i40e_vsi_delete(struct i40e_vsi *vsi)
6137{
6138 /* remove default VSI is not allowed */
6139 if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6140 return;
6141
6142 /* there is no HW VSI for FDIR */
6143 if (vsi->type == I40E_VSI_FDIR)
6144 return;
6145
6146 i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6147 return;
6148}
6149
6150/**
6151 * i40e_add_vsi - Add a VSI to the switch
6152 * @vsi: the VSI being configured
6153 *
6154 * This initializes a VSI context depending on the VSI type to be added and
6155 * passes it down to the add_vsi aq command.
6156 **/
6157static int i40e_add_vsi(struct i40e_vsi *vsi)
6158{
6159 int ret = -ENODEV;
6160 struct i40e_mac_filter *f, *ftmp;
6161 struct i40e_pf *pf = vsi->back;
6162 struct i40e_hw *hw = &pf->hw;
6163 struct i40e_vsi_context ctxt;
6164 u8 enabled_tc = 0x1; /* TC0 enabled */
6165 int f_count = 0;
6166
6167 memset(&ctxt, 0, sizeof(ctxt));
6168 switch (vsi->type) {
6169 case I40E_VSI_MAIN:
6170 /* The PF's main VSI is already setup as part of the
6171 * device initialization, so we'll not bother with
6172 * the add_vsi call, but we will retrieve the current
6173 * VSI context.
6174 */
6175 ctxt.seid = pf->main_vsi_seid;
6176 ctxt.pf_num = pf->hw.pf_id;
6177 ctxt.vf_num = 0;
6178 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6179 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6180 if (ret) {
6181 dev_info(&pf->pdev->dev,
6182 "couldn't get pf vsi config, err %d, aq_err %d\n",
6183 ret, pf->hw.aq.asq_last_status);
6184 return -ENOENT;
6185 }
6186 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6187 vsi->info.valid_sections = 0;
6188
6189 vsi->seid = ctxt.seid;
6190 vsi->id = ctxt.vsi_number;
6191
6192 enabled_tc = i40e_pf_get_tc_map(pf);
6193
6194 /* MFP mode setup queue map and update VSI */
6195 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6196 memset(&ctxt, 0, sizeof(ctxt));
6197 ctxt.seid = pf->main_vsi_seid;
6198 ctxt.pf_num = pf->hw.pf_id;
6199 ctxt.vf_num = 0;
6200 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6201 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6202 if (ret) {
6203 dev_info(&pf->pdev->dev,
6204 "update vsi failed, aq_err=%d\n",
6205 pf->hw.aq.asq_last_status);
6206 ret = -ENOENT;
6207 goto err;
6208 }
6209 /* update the local VSI info queue map */
6210 i40e_vsi_update_queue_map(vsi, &ctxt);
6211 vsi->info.valid_sections = 0;
6212 } else {
6213 /* Default/Main VSI is only enabled for TC0
6214 * reconfigure it to enable all TCs that are
6215 * available on the port in SFP mode.
6216 */
6217 ret = i40e_vsi_config_tc(vsi, enabled_tc);
6218 if (ret) {
6219 dev_info(&pf->pdev->dev,
6220 "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6221 enabled_tc, ret,
6222 pf->hw.aq.asq_last_status);
6223 ret = -ENOENT;
6224 }
6225 }
6226 break;
6227
6228 case I40E_VSI_FDIR:
6229 /* no queue mapping or actual HW VSI needed */
6230 vsi->info.valid_sections = 0;
6231 vsi->seid = 0;
6232 vsi->id = 0;
6233 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6234 return 0;
6235 break;
6236
6237 case I40E_VSI_VMDQ2:
6238 ctxt.pf_num = hw->pf_id;
6239 ctxt.vf_num = 0;
6240 ctxt.uplink_seid = vsi->uplink_seid;
6241 ctxt.connection_type = 0x1; /* regular data port */
6242 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6243
6244 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6245
6246 /* This VSI is connected to VEB so the switch_id
6247 * should be set to zero by default.
6248 */
6249 ctxt.info.switch_id = 0;
6250 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6251 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6252
6253 /* Setup the VSI tx/rx queue map for TC0 only for now */
6254 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6255 break;
6256
6257 case I40E_VSI_SRIOV:
6258 ctxt.pf_num = hw->pf_id;
6259 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6260 ctxt.uplink_seid = vsi->uplink_seid;
6261 ctxt.connection_type = 0x1; /* regular data port */
6262 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6263
6264 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6265
6266 /* This VSI is connected to VEB so the switch_id
6267 * should be set to zero by default.
6268 */
6269 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6270
6271 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6272 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6273 /* Setup the VSI tx/rx queue map for TC0 only for now */
6274 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6275 break;
6276
6277 default:
6278 return -ENODEV;
6279 }
6280
6281 if (vsi->type != I40E_VSI_MAIN) {
6282 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6283 if (ret) {
6284 dev_info(&vsi->back->pdev->dev,
6285 "add vsi failed, aq_err=%d\n",
6286 vsi->back->hw.aq.asq_last_status);
6287 ret = -ENOENT;
6288 goto err;
6289 }
6290 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6291 vsi->info.valid_sections = 0;
6292 vsi->seid = ctxt.seid;
6293 vsi->id = ctxt.vsi_number;
6294 }
6295
6296 /* If macvlan filters already exist, force them to get loaded */
6297 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
6298 f->changed = true;
6299 f_count++;
6300 }
6301 if (f_count) {
6302 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
6303 pf->flags |= I40E_FLAG_FILTER_SYNC;
6304 }
6305
6306 /* Update VSI BW information */
6307 ret = i40e_vsi_get_bw_info(vsi);
6308 if (ret) {
6309 dev_info(&pf->pdev->dev,
6310 "couldn't get vsi bw info, err %d, aq_err %d\n",
6311 ret, pf->hw.aq.asq_last_status);
6312 /* VSI is already added so not tearing that up */
6313 ret = 0;
6314 }
6315
6316err:
6317 return ret;
6318}
6319
6320/**
6321 * i40e_vsi_release - Delete a VSI and free its resources
6322 * @vsi: the VSI being removed
6323 *
6324 * Returns 0 on success or < 0 on error
6325 **/
6326int i40e_vsi_release(struct i40e_vsi *vsi)
6327{
6328 struct i40e_mac_filter *f, *ftmp;
6329 struct i40e_veb *veb = NULL;
6330 struct i40e_pf *pf;
6331 u16 uplink_seid;
6332 int i, n;
6333
6334 pf = vsi->back;
6335
6336 /* release of a VEB-owner or last VSI is not allowed */
6337 if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6338 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6339 vsi->seid, vsi->uplink_seid);
6340 return -ENODEV;
6341 }
6342 if (vsi == pf->vsi[pf->lan_vsi] &&
6343 !test_bit(__I40E_DOWN, &pf->state)) {
6344 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6345 return -ENODEV;
6346 }
6347
6348 uplink_seid = vsi->uplink_seid;
6349 if (vsi->type != I40E_VSI_SRIOV) {
6350 if (vsi->netdev_registered) {
6351 vsi->netdev_registered = false;
6352 if (vsi->netdev) {
6353 /* results in a call to i40e_close() */
6354 unregister_netdev(vsi->netdev);
6355 free_netdev(vsi->netdev);
6356 vsi->netdev = NULL;
6357 }
6358 } else {
6359 if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6360 i40e_down(vsi);
6361 i40e_vsi_free_irq(vsi);
6362 i40e_vsi_free_tx_resources(vsi);
6363 i40e_vsi_free_rx_resources(vsi);
6364 }
6365 i40e_vsi_disable_irq(vsi);
6366 }
6367
6368 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6369 i40e_del_filter(vsi, f->macaddr, f->vlan,
6370 f->is_vf, f->is_netdev);
6371 i40e_sync_vsi_filters(vsi);
6372
6373 i40e_vsi_delete(vsi);
6374 i40e_vsi_free_q_vectors(vsi);
6375 i40e_vsi_clear_rings(vsi);
6376 i40e_vsi_clear(vsi);
6377
6378 /* If this was the last thing on the VEB, except for the
6379 * controlling VSI, remove the VEB, which puts the controlling
6380 * VSI onto the next level down in the switch.
6381 *
6382 * Well, okay, there's one more exception here: don't remove
6383 * the orphan VEBs yet. We'll wait for an explicit remove request
6384 * from up the network stack.
6385 */
6386 for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6387 if (pf->vsi[i] &&
6388 pf->vsi[i]->uplink_seid == uplink_seid &&
6389 (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6390 n++; /* count the VSIs */
6391 }
6392 }
6393 for (i = 0; i < I40E_MAX_VEB; i++) {
6394 if (!pf->veb[i])
6395 continue;
6396 if (pf->veb[i]->uplink_seid == uplink_seid)
6397 n++; /* count the VEBs */
6398 if (pf->veb[i]->seid == uplink_seid)
6399 veb = pf->veb[i];
6400 }
6401 if (n == 0 && veb && veb->uplink_seid != 0)
6402 i40e_veb_release(veb);
6403
6404 return 0;
6405}
6406
6407/**
6408 * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
6409 * @vsi: ptr to the VSI
6410 *
6411 * This should only be called after i40e_vsi_mem_alloc() which allocates the
6412 * corresponding SW VSI structure and initializes num_queue_pairs for the
6413 * newly allocated VSI.
6414 *
6415 * Returns 0 on success or negative on failure
6416 **/
6417static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
6418{
6419 int ret = -ENOENT;
6420 struct i40e_pf *pf = vsi->back;
6421
Alexander Duyck493fb302013-09-28 07:01:44 +00006422 if (vsi->q_vectors[0]) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006423 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
6424 vsi->seid);
6425 return -EEXIST;
6426 }
6427
6428 if (vsi->base_vector) {
6429 dev_info(&pf->pdev->dev,
6430 "VSI %d has non-zero base vector %d\n",
6431 vsi->seid, vsi->base_vector);
6432 return -EEXIST;
6433 }
6434
6435 ret = i40e_alloc_q_vectors(vsi);
6436 if (ret) {
6437 dev_info(&pf->pdev->dev,
6438 "failed to allocate %d q_vector for VSI %d, ret=%d\n",
6439 vsi->num_q_vectors, vsi->seid, ret);
6440 vsi->num_q_vectors = 0;
6441 goto vector_setup_out;
6442 }
6443
Shannon Nelson958a3e32013-09-28 07:13:28 +00006444 if (vsi->num_q_vectors)
6445 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
6446 vsi->num_q_vectors, vsi->idx);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006447 if (vsi->base_vector < 0) {
6448 dev_info(&pf->pdev->dev,
6449 "failed to get q tracking for VSI %d, err=%d\n",
6450 vsi->seid, vsi->base_vector);
6451 i40e_vsi_free_q_vectors(vsi);
6452 ret = -ENOENT;
6453 goto vector_setup_out;
6454 }
6455
6456vector_setup_out:
6457 return ret;
6458}
6459
6460/**
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00006461 * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
6462 * @vsi: pointer to the vsi.
6463 *
6464 * This re-allocates a vsi's queue resources.
6465 *
6466 * Returns pointer to the successfully allocated and configured VSI sw struct
6467 * on success, otherwise returns NULL on failure.
6468 **/
6469static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
6470{
6471 struct i40e_pf *pf = vsi->back;
6472 u8 enabled_tc;
6473 int ret;
6474
6475 i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6476 i40e_vsi_clear_rings(vsi);
6477
6478 i40e_vsi_free_arrays(vsi, false);
6479 i40e_set_num_rings_in_vsi(vsi);
6480 ret = i40e_vsi_alloc_arrays(vsi, false);
6481 if (ret)
6482 goto err_vsi;
6483
6484 ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
6485 if (ret < 0) {
6486 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
6487 vsi->seid, ret);
6488 goto err_vsi;
6489 }
6490 vsi->base_queue = ret;
6491
6492 /* Update the FW view of the VSI. Force a reset of TC and queue
6493 * layout configurations.
6494 */
6495 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
6496 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
6497 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
6498 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
6499
6500 /* assign it some queues */
6501 ret = i40e_alloc_rings(vsi);
6502 if (ret)
6503 goto err_rings;
6504
6505 /* map all of the rings to the q_vectors */
6506 i40e_vsi_map_rings_to_vectors(vsi);
6507 return vsi;
6508
6509err_rings:
6510 i40e_vsi_free_q_vectors(vsi);
6511 if (vsi->netdev_registered) {
6512 vsi->netdev_registered = false;
6513 unregister_netdev(vsi->netdev);
6514 free_netdev(vsi->netdev);
6515 vsi->netdev = NULL;
6516 }
6517 i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
6518err_vsi:
6519 i40e_vsi_clear(vsi);
6520 return NULL;
6521}
6522
6523/**
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006524 * i40e_vsi_setup - Set up a VSI by a given type
6525 * @pf: board private structure
6526 * @type: VSI type
6527 * @uplink_seid: the switch element to link to
6528 * @param1: usage depends upon VSI type. For VF types, indicates VF id
6529 *
6530 * This allocates the sw VSI structure and its queue resources, then add a VSI
6531 * to the identified VEB.
6532 *
6533 * Returns pointer to the successfully allocated and configure VSI sw struct on
6534 * success, otherwise returns NULL on failure.
6535 **/
6536struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
6537 u16 uplink_seid, u32 param1)
6538{
6539 struct i40e_vsi *vsi = NULL;
6540 struct i40e_veb *veb = NULL;
6541 int ret, i;
6542 int v_idx;
6543
6544 /* The requested uplink_seid must be either
6545 * - the PF's port seid
6546 * no VEB is needed because this is the PF
6547 * or this is a Flow Director special case VSI
6548 * - seid of an existing VEB
6549 * - seid of a VSI that owns an existing VEB
6550 * - seid of a VSI that doesn't own a VEB
6551 * a new VEB is created and the VSI becomes the owner
6552 * - seid of the PF VSI, which is what creates the first VEB
6553 * this is a special case of the previous
6554 *
6555 * Find which uplink_seid we were given and create a new VEB if needed
6556 */
6557 for (i = 0; i < I40E_MAX_VEB; i++) {
6558 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
6559 veb = pf->veb[i];
6560 break;
6561 }
6562 }
6563
6564 if (!veb && uplink_seid != pf->mac_seid) {
6565
6566 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6567 if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
6568 vsi = pf->vsi[i];
6569 break;
6570 }
6571 }
6572 if (!vsi) {
6573 dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
6574 uplink_seid);
6575 return NULL;
6576 }
6577
6578 if (vsi->uplink_seid == pf->mac_seid)
6579 veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
6580 vsi->tc_config.enabled_tc);
6581 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
6582 veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
6583 vsi->tc_config.enabled_tc);
6584
6585 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
6586 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
6587 veb = pf->veb[i];
6588 }
6589 if (!veb) {
6590 dev_info(&pf->pdev->dev, "couldn't add VEB\n");
6591 return NULL;
6592 }
6593
6594 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6595 uplink_seid = veb->seid;
6596 }
6597
6598 /* get vsi sw struct */
6599 v_idx = i40e_vsi_mem_alloc(pf, type);
6600 if (v_idx < 0)
6601 goto err_alloc;
6602 vsi = pf->vsi[v_idx];
6603 vsi->type = type;
6604 vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
6605
6606 if (type == I40E_VSI_MAIN)
6607 pf->lan_vsi = v_idx;
6608 else if (type == I40E_VSI_SRIOV)
6609 vsi->vf_id = param1;
6610 /* assign it some queues */
6611 ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
6612 if (ret < 0) {
6613 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
6614 vsi->seid, ret);
6615 goto err_vsi;
6616 }
6617 vsi->base_queue = ret;
6618
6619 /* get a VSI from the hardware */
6620 vsi->uplink_seid = uplink_seid;
6621 ret = i40e_add_vsi(vsi);
6622 if (ret)
6623 goto err_vsi;
6624
6625 switch (vsi->type) {
6626 /* setup the netdev if needed */
6627 case I40E_VSI_MAIN:
6628 case I40E_VSI_VMDQ2:
6629 ret = i40e_config_netdev(vsi);
6630 if (ret)
6631 goto err_netdev;
6632 ret = register_netdev(vsi->netdev);
6633 if (ret)
6634 goto err_netdev;
6635 vsi->netdev_registered = true;
6636 netif_carrier_off(vsi->netdev);
6637 /* fall through */
6638
6639 case I40E_VSI_FDIR:
6640 /* set up vectors and rings if needed */
6641 ret = i40e_vsi_setup_vectors(vsi);
6642 if (ret)
6643 goto err_msix;
6644
6645 ret = i40e_alloc_rings(vsi);
6646 if (ret)
6647 goto err_rings;
6648
6649 /* map all of the rings to the q_vectors */
6650 i40e_vsi_map_rings_to_vectors(vsi);
6651
6652 i40e_vsi_reset_stats(vsi);
6653 break;
6654
6655 default:
6656 /* no netdev or rings for the other VSI types */
6657 break;
6658 }
6659
6660 return vsi;
6661
6662err_rings:
6663 i40e_vsi_free_q_vectors(vsi);
6664err_msix:
6665 if (vsi->netdev_registered) {
6666 vsi->netdev_registered = false;
6667 unregister_netdev(vsi->netdev);
6668 free_netdev(vsi->netdev);
6669 vsi->netdev = NULL;
6670 }
6671err_netdev:
6672 i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
6673err_vsi:
6674 i40e_vsi_clear(vsi);
6675err_alloc:
6676 return NULL;
6677}
6678
6679/**
6680 * i40e_veb_get_bw_info - Query VEB BW information
6681 * @veb: the veb to query
6682 *
6683 * Query the Tx scheduler BW configuration data for given VEB
6684 **/
6685static int i40e_veb_get_bw_info(struct i40e_veb *veb)
6686{
6687 struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
6688 struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
6689 struct i40e_pf *pf = veb->pf;
6690 struct i40e_hw *hw = &pf->hw;
6691 u32 tc_bw_max;
6692 int ret = 0;
6693 int i;
6694
6695 ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
6696 &bw_data, NULL);
6697 if (ret) {
6698 dev_info(&pf->pdev->dev,
6699 "query veb bw config failed, aq_err=%d\n",
6700 hw->aq.asq_last_status);
6701 goto out;
6702 }
6703
6704 ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
6705 &ets_data, NULL);
6706 if (ret) {
6707 dev_info(&pf->pdev->dev,
6708 "query veb bw ets config failed, aq_err=%d\n",
6709 hw->aq.asq_last_status);
6710 goto out;
6711 }
6712
6713 veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
6714 veb->bw_max_quanta = ets_data.tc_bw_max;
6715 veb->is_abs_credits = bw_data.absolute_credits_enable;
6716 tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
6717 (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
6718 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6719 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
6720 veb->bw_tc_limit_credits[i] =
6721 le16_to_cpu(bw_data.tc_bw_limits[i]);
6722 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
6723 }
6724
6725out:
6726 return ret;
6727}
6728
6729/**
6730 * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
6731 * @pf: board private structure
6732 *
6733 * On error: returns error code (negative)
6734 * On success: returns vsi index in PF (positive)
6735 **/
6736static int i40e_veb_mem_alloc(struct i40e_pf *pf)
6737{
6738 int ret = -ENOENT;
6739 struct i40e_veb *veb;
6740 int i;
6741
6742 /* Need to protect the allocation of switch elements at the PF level */
6743 mutex_lock(&pf->switch_mutex);
6744
6745 /* VEB list may be fragmented if VEB creation/destruction has
6746 * been happening. We can afford to do a quick scan to look
6747 * for any free slots in the list.
6748 *
6749 * find next empty veb slot, looping back around if necessary
6750 */
6751 i = 0;
6752 while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
6753 i++;
6754 if (i >= I40E_MAX_VEB) {
6755 ret = -ENOMEM;
6756 goto err_alloc_veb; /* out of VEB slots! */
6757 }
6758
6759 veb = kzalloc(sizeof(*veb), GFP_KERNEL);
6760 if (!veb) {
6761 ret = -ENOMEM;
6762 goto err_alloc_veb;
6763 }
6764 veb->pf = pf;
6765 veb->idx = i;
6766 veb->enabled_tc = 1;
6767
6768 pf->veb[i] = veb;
6769 ret = i;
6770err_alloc_veb:
6771 mutex_unlock(&pf->switch_mutex);
6772 return ret;
6773}
6774
6775/**
6776 * i40e_switch_branch_release - Delete a branch of the switch tree
6777 * @branch: where to start deleting
6778 *
6779 * This uses recursion to find the tips of the branch to be
6780 * removed, deleting until we get back to and can delete this VEB.
6781 **/
6782static void i40e_switch_branch_release(struct i40e_veb *branch)
6783{
6784 struct i40e_pf *pf = branch->pf;
6785 u16 branch_seid = branch->seid;
6786 u16 veb_idx = branch->idx;
6787 int i;
6788
6789 /* release any VEBs on this VEB - RECURSION */
6790 for (i = 0; i < I40E_MAX_VEB; i++) {
6791 if (!pf->veb[i])
6792 continue;
6793 if (pf->veb[i]->uplink_seid == branch->seid)
6794 i40e_switch_branch_release(pf->veb[i]);
6795 }
6796
6797 /* Release the VSIs on this VEB, but not the owner VSI.
6798 *
6799 * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
6800 * the VEB itself, so don't use (*branch) after this loop.
6801 */
6802 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6803 if (!pf->vsi[i])
6804 continue;
6805 if (pf->vsi[i]->uplink_seid == branch_seid &&
6806 (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6807 i40e_vsi_release(pf->vsi[i]);
6808 }
6809 }
6810
6811 /* There's one corner case where the VEB might not have been
6812 * removed, so double check it here and remove it if needed.
6813 * This case happens if the veb was created from the debugfs
6814 * commands and no VSIs were added to it.
6815 */
6816 if (pf->veb[veb_idx])
6817 i40e_veb_release(pf->veb[veb_idx]);
6818}
6819
6820/**
6821 * i40e_veb_clear - remove veb struct
6822 * @veb: the veb to remove
6823 **/
6824static void i40e_veb_clear(struct i40e_veb *veb)
6825{
6826 if (!veb)
6827 return;
6828
6829 if (veb->pf) {
6830 struct i40e_pf *pf = veb->pf;
6831
6832 mutex_lock(&pf->switch_mutex);
6833 if (pf->veb[veb->idx] == veb)
6834 pf->veb[veb->idx] = NULL;
6835 mutex_unlock(&pf->switch_mutex);
6836 }
6837
6838 kfree(veb);
6839}
6840
6841/**
6842 * i40e_veb_release - Delete a VEB and free its resources
6843 * @veb: the VEB being removed
6844 **/
6845void i40e_veb_release(struct i40e_veb *veb)
6846{
6847 struct i40e_vsi *vsi = NULL;
6848 struct i40e_pf *pf;
6849 int i, n = 0;
6850
6851 pf = veb->pf;
6852
6853 /* find the remaining VSI and check for extras */
6854 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6855 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
6856 n++;
6857 vsi = pf->vsi[i];
6858 }
6859 }
6860 if (n != 1) {
6861 dev_info(&pf->pdev->dev,
6862 "can't remove VEB %d with %d VSIs left\n",
6863 veb->seid, n);
6864 return;
6865 }
6866
6867 /* move the remaining VSI to uplink veb */
6868 vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
6869 if (veb->uplink_seid) {
6870 vsi->uplink_seid = veb->uplink_seid;
6871 if (veb->uplink_seid == pf->mac_seid)
6872 vsi->veb_idx = I40E_NO_VEB;
6873 else
6874 vsi->veb_idx = veb->veb_idx;
6875 } else {
6876 /* floating VEB */
6877 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6878 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
6879 }
6880
6881 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
6882 i40e_veb_clear(veb);
6883
6884 return;
6885}
6886
6887/**
6888 * i40e_add_veb - create the VEB in the switch
6889 * @veb: the VEB to be instantiated
6890 * @vsi: the controlling VSI
6891 **/
6892static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
6893{
Greg Rose56747262013-11-28 06:39:37 +00006894 bool is_default = false;
Kevin Scotte1c51b952013-11-20 10:02:51 +00006895 bool is_cloud = false;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006896 int ret;
6897
6898 /* get a VEB from the hardware */
6899 ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
Kevin Scotte1c51b952013-11-20 10:02:51 +00006900 veb->enabled_tc, is_default,
6901 is_cloud, &veb->seid, NULL);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00006902 if (ret) {
6903 dev_info(&veb->pf->pdev->dev,
6904 "couldn't add VEB, err %d, aq_err %d\n",
6905 ret, veb->pf->hw.aq.asq_last_status);
6906 return -EPERM;
6907 }
6908
6909 /* get statistics counter */
6910 ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
6911 &veb->stats_idx, NULL, NULL, NULL);
6912 if (ret) {
6913 dev_info(&veb->pf->pdev->dev,
6914 "couldn't get VEB statistics idx, err %d, aq_err %d\n",
6915 ret, veb->pf->hw.aq.asq_last_status);
6916 return -EPERM;
6917 }
6918 ret = i40e_veb_get_bw_info(veb);
6919 if (ret) {
6920 dev_info(&veb->pf->pdev->dev,
6921 "couldn't get VEB bw info, err %d, aq_err %d\n",
6922 ret, veb->pf->hw.aq.asq_last_status);
6923 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
6924 return -ENOENT;
6925 }
6926
6927 vsi->uplink_seid = veb->seid;
6928 vsi->veb_idx = veb->idx;
6929 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6930
6931 return 0;
6932}
6933
6934/**
6935 * i40e_veb_setup - Set up a VEB
6936 * @pf: board private structure
6937 * @flags: VEB setup flags
6938 * @uplink_seid: the switch element to link to
6939 * @vsi_seid: the initial VSI seid
6940 * @enabled_tc: Enabled TC bit-map
6941 *
6942 * This allocates the sw VEB structure and links it into the switch
6943 * It is possible and legal for this to be a duplicate of an already
6944 * existing VEB. It is also possible for both uplink and vsi seids
6945 * to be zero, in order to create a floating VEB.
6946 *
6947 * Returns pointer to the successfully allocated VEB sw struct on
6948 * success, otherwise returns NULL on failure.
6949 **/
6950struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
6951 u16 uplink_seid, u16 vsi_seid,
6952 u8 enabled_tc)
6953{
6954 struct i40e_veb *veb, *uplink_veb = NULL;
6955 int vsi_idx, veb_idx;
6956 int ret;
6957
6958 /* if one seid is 0, the other must be 0 to create a floating relay */
6959 if ((uplink_seid == 0 || vsi_seid == 0) &&
6960 (uplink_seid + vsi_seid != 0)) {
6961 dev_info(&pf->pdev->dev,
6962 "one, not both seid's are 0: uplink=%d vsi=%d\n",
6963 uplink_seid, vsi_seid);
6964 return NULL;
6965 }
6966
6967 /* make sure there is such a vsi and uplink */
6968 for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
6969 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
6970 break;
6971 if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
6972 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
6973 vsi_seid);
6974 return NULL;
6975 }
6976
6977 if (uplink_seid && uplink_seid != pf->mac_seid) {
6978 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6979 if (pf->veb[veb_idx] &&
6980 pf->veb[veb_idx]->seid == uplink_seid) {
6981 uplink_veb = pf->veb[veb_idx];
6982 break;
6983 }
6984 }
6985 if (!uplink_veb) {
6986 dev_info(&pf->pdev->dev,
6987 "uplink seid %d not found\n", uplink_seid);
6988 return NULL;
6989 }
6990 }
6991
6992 /* get veb sw struct */
6993 veb_idx = i40e_veb_mem_alloc(pf);
6994 if (veb_idx < 0)
6995 goto err_alloc;
6996 veb = pf->veb[veb_idx];
6997 veb->flags = flags;
6998 veb->uplink_seid = uplink_seid;
6999 veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7000 veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7001
7002 /* create the VEB in the switch */
7003 ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7004 if (ret)
7005 goto err_veb;
7006
7007 return veb;
7008
7009err_veb:
7010 i40e_veb_clear(veb);
7011err_alloc:
7012 return NULL;
7013}
7014
7015/**
7016 * i40e_setup_pf_switch_element - set pf vars based on switch type
7017 * @pf: board private structure
7018 * @ele: element we are building info from
7019 * @num_reported: total number of elements
7020 * @printconfig: should we print the contents
7021 *
7022 * helper function to assist in extracting a few useful SEID values.
7023 **/
7024static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7025 struct i40e_aqc_switch_config_element_resp *ele,
7026 u16 num_reported, bool printconfig)
7027{
7028 u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7029 u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7030 u8 element_type = ele->element_type;
7031 u16 seid = le16_to_cpu(ele->seid);
7032
7033 if (printconfig)
7034 dev_info(&pf->pdev->dev,
7035 "type=%d seid=%d uplink=%d downlink=%d\n",
7036 element_type, seid, uplink_seid, downlink_seid);
7037
7038 switch (element_type) {
7039 case I40E_SWITCH_ELEMENT_TYPE_MAC:
7040 pf->mac_seid = seid;
7041 break;
7042 case I40E_SWITCH_ELEMENT_TYPE_VEB:
7043 /* Main VEB? */
7044 if (uplink_seid != pf->mac_seid)
7045 break;
7046 if (pf->lan_veb == I40E_NO_VEB) {
7047 int v;
7048
7049 /* find existing or else empty VEB */
7050 for (v = 0; v < I40E_MAX_VEB; v++) {
7051 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7052 pf->lan_veb = v;
7053 break;
7054 }
7055 }
7056 if (pf->lan_veb == I40E_NO_VEB) {
7057 v = i40e_veb_mem_alloc(pf);
7058 if (v < 0)
7059 break;
7060 pf->lan_veb = v;
7061 }
7062 }
7063
7064 pf->veb[pf->lan_veb]->seid = seid;
7065 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7066 pf->veb[pf->lan_veb]->pf = pf;
7067 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7068 break;
7069 case I40E_SWITCH_ELEMENT_TYPE_VSI:
7070 if (num_reported != 1)
7071 break;
7072 /* This is immediately after a reset so we can assume this is
7073 * the PF's VSI
7074 */
7075 pf->mac_seid = uplink_seid;
7076 pf->pf_seid = downlink_seid;
7077 pf->main_vsi_seid = seid;
7078 if (printconfig)
7079 dev_info(&pf->pdev->dev,
7080 "pf_seid=%d main_vsi_seid=%d\n",
7081 pf->pf_seid, pf->main_vsi_seid);
7082 break;
7083 case I40E_SWITCH_ELEMENT_TYPE_PF:
7084 case I40E_SWITCH_ELEMENT_TYPE_VF:
7085 case I40E_SWITCH_ELEMENT_TYPE_EMP:
7086 case I40E_SWITCH_ELEMENT_TYPE_BMC:
7087 case I40E_SWITCH_ELEMENT_TYPE_PE:
7088 case I40E_SWITCH_ELEMENT_TYPE_PA:
7089 /* ignore these for now */
7090 break;
7091 default:
7092 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7093 element_type, seid);
7094 break;
7095 }
7096}
7097
7098/**
7099 * i40e_fetch_switch_configuration - Get switch config from firmware
7100 * @pf: board private structure
7101 * @printconfig: should we print the contents
7102 *
7103 * Get the current switch configuration from the device and
7104 * extract a few useful SEID values.
7105 **/
7106int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7107{
7108 struct i40e_aqc_get_switch_config_resp *sw_config;
7109 u16 next_seid = 0;
7110 int ret = 0;
7111 u8 *aq_buf;
7112 int i;
7113
7114 aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7115 if (!aq_buf)
7116 return -ENOMEM;
7117
7118 sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7119 do {
7120 u16 num_reported, num_total;
7121
7122 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7123 I40E_AQ_LARGE_BUF,
7124 &next_seid, NULL);
7125 if (ret) {
7126 dev_info(&pf->pdev->dev,
7127 "get switch config failed %d aq_err=%x\n",
7128 ret, pf->hw.aq.asq_last_status);
7129 kfree(aq_buf);
7130 return -ENOENT;
7131 }
7132
7133 num_reported = le16_to_cpu(sw_config->header.num_reported);
7134 num_total = le16_to_cpu(sw_config->header.num_total);
7135
7136 if (printconfig)
7137 dev_info(&pf->pdev->dev,
7138 "header: %d reported %d total\n",
7139 num_reported, num_total);
7140
7141 if (num_reported) {
7142 int sz = sizeof(*sw_config) * num_reported;
7143
7144 kfree(pf->sw_config);
7145 pf->sw_config = kzalloc(sz, GFP_KERNEL);
7146 if (pf->sw_config)
7147 memcpy(pf->sw_config, sw_config, sz);
7148 }
7149
7150 for (i = 0; i < num_reported; i++) {
7151 struct i40e_aqc_switch_config_element_resp *ele =
7152 &sw_config->element[i];
7153
7154 i40e_setup_pf_switch_element(pf, ele, num_reported,
7155 printconfig);
7156 }
7157 } while (next_seid != 0);
7158
7159 kfree(aq_buf);
7160 return ret;
7161}
7162
7163/**
7164 * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7165 * @pf: board private structure
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00007166 * @reinit: if the Main VSI needs to re-initialized.
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007167 *
7168 * Returns 0 on success, negative value on failure
7169 **/
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00007170static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007171{
Jesse Brandeburg895106a2013-11-26 10:49:16 +00007172 u32 rxfc = 0, txfc = 0, rxfc_reg;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007173 int ret;
7174
7175 /* find out what's out there already */
7176 ret = i40e_fetch_switch_configuration(pf, false);
7177 if (ret) {
7178 dev_info(&pf->pdev->dev,
7179 "couldn't fetch switch config, err %d, aq_err %d\n",
7180 ret, pf->hw.aq.asq_last_status);
7181 return ret;
7182 }
7183 i40e_pf_reset_stats(pf);
7184
7185 /* fdir VSI must happen first to be sure it gets queue 0, but only
7186 * if there is enough room for the fdir VSI
7187 */
7188 if (pf->num_lan_qps > 1)
7189 i40e_fdir_setup(pf);
7190
7191 /* first time setup */
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00007192 if (pf->lan_vsi == I40E_NO_VSI || reinit) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007193 struct i40e_vsi *vsi = NULL;
7194 u16 uplink_seid;
7195
7196 /* Set up the PF VSI associated with the PF's main VSI
7197 * that is already in the HW switch
7198 */
7199 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7200 uplink_seid = pf->veb[pf->lan_veb]->seid;
7201 else
7202 uplink_seid = pf->mac_seid;
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00007203 if (pf->lan_vsi == I40E_NO_VSI)
7204 vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7205 else if (reinit)
7206 vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007207 if (!vsi) {
7208 dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7209 i40e_fdir_teardown(pf);
7210 return -EAGAIN;
7211 }
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007212 } else {
7213 /* force a reset of TC and queue layout configurations */
7214 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7215 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7216 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7217 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7218 }
7219 i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7220
7221 /* Setup static PF queue filter control settings */
7222 ret = i40e_setup_pf_filter_control(pf);
7223 if (ret) {
7224 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7225 ret);
7226 /* Failure here should not stop continuing other steps */
7227 }
7228
7229 /* enable RSS in the HW, even for only one queue, as the stack can use
7230 * the hash
7231 */
7232 if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7233 i40e_config_rss(pf);
7234
7235 /* fill in link information and enable LSE reporting */
7236 i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7237 i40e_link_event(pf);
7238
Jesse Brandeburgd52c20b2013-11-26 10:49:15 +00007239 /* Initialize user-specific link properties */
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007240 pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7241 I40E_AQ_AN_COMPLETED) ? true : false);
Jesse Brandeburgd52c20b2013-11-26 10:49:15 +00007242 /* requested_mode is set in probe or by ethtool */
7243 if (!pf->fc_autoneg_status)
7244 goto no_autoneg;
7245
7246 if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7247 (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007248 pf->hw.fc.current_mode = I40E_FC_FULL;
7249 else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7250 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7251 else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7252 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7253 else
Jesse Brandeburgd52c20b2013-11-26 10:49:15 +00007254 pf->hw.fc.current_mode = I40E_FC_NONE;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007255
Jesse Brandeburgd52c20b2013-11-26 10:49:15 +00007256 /* sync the flow control settings with the auto-neg values */
7257 switch (pf->hw.fc.current_mode) {
7258 case I40E_FC_FULL:
7259 txfc = 1;
7260 rxfc = 1;
7261 break;
7262 case I40E_FC_TX_PAUSE:
7263 txfc = 1;
7264 rxfc = 0;
7265 break;
7266 case I40E_FC_RX_PAUSE:
7267 txfc = 0;
7268 rxfc = 1;
7269 break;
7270 case I40E_FC_NONE:
7271 case I40E_FC_DEFAULT:
7272 txfc = 0;
7273 rxfc = 0;
7274 break;
7275 case I40E_FC_PFC:
7276 /* TBD */
7277 break;
7278 /* no default case, we have to handle all possibilities here */
7279 }
7280
7281 wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
7282
7283 rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7284 ~I40E_PRTDCB_MFLCN_RFCE_MASK;
7285 rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
7286
7287 wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
7288
7289 goto fc_complete;
7290
7291no_autoneg:
7292 /* disable L2 flow control, user can turn it on if they wish */
7293 wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
7294 wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7295 ~I40E_PRTDCB_MFLCN_RFCE_MASK);
7296
7297fc_complete:
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007298 return ret;
7299}
7300
7301/**
7302 * i40e_set_rss_size - helper to set rss_size
7303 * @pf: board private structure
7304 * @queues_left: how many queues
7305 */
7306static u16 i40e_set_rss_size(struct i40e_pf *pf, int queues_left)
7307{
7308 int num_tc0;
7309
7310 num_tc0 = min_t(int, queues_left, pf->rss_size_max);
Jesse Brandeburgbf051a32013-11-26 10:49:17 +00007311 num_tc0 = min_t(int, num_tc0, num_online_cpus());
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007312 num_tc0 = rounddown_pow_of_two(num_tc0);
7313
7314 return num_tc0;
7315}
7316
7317/**
7318 * i40e_determine_queue_usage - Work out queue distribution
7319 * @pf: board private structure
7320 **/
7321static void i40e_determine_queue_usage(struct i40e_pf *pf)
7322{
7323 int accum_tc_size;
7324 int queues_left;
7325
7326 pf->num_lan_qps = 0;
7327 pf->num_tc_qps = rounddown_pow_of_two(pf->num_tc_qps);
7328 accum_tc_size = (I40E_MAX_TRAFFIC_CLASS - 1) * pf->num_tc_qps;
7329
7330 /* Find the max queues to be put into basic use. We'll always be
7331 * using TC0, whether or not DCB is running, and TC0 will get the
7332 * big RSS set.
7333 */
7334 queues_left = pf->hw.func_caps.num_tx_qp;
7335
Neerav Parikh9f529872013-11-28 06:39:38 +00007336 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007337 !(pf->flags & (I40E_FLAG_RSS_ENABLED |
7338 I40E_FLAG_FDIR_ENABLED | I40E_FLAG_DCB_ENABLED)) ||
7339 (queues_left == 1)) {
7340
7341 /* one qp for PF, no queues for anything else */
7342 queues_left = 0;
7343 pf->rss_size = pf->num_lan_qps = 1;
7344
7345 /* make sure all the fancies are disabled */
7346 pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007347 I40E_FLAG_FDIR_ENABLED |
7348 I40E_FLAG_FDIR_ATR_ENABLED |
7349 I40E_FLAG_DCB_ENABLED |
7350 I40E_FLAG_SRIOV_ENABLED |
7351 I40E_FLAG_VMDQ_ENABLED);
7352
7353 } else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
7354 !(pf->flags & I40E_FLAG_FDIR_ENABLED) &&
7355 !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
7356
7357 pf->rss_size = i40e_set_rss_size(pf, queues_left);
7358
7359 queues_left -= pf->rss_size;
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00007360 pf->num_lan_qps = pf->rss_size_max;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007361
7362 } else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
7363 !(pf->flags & I40E_FLAG_FDIR_ENABLED) &&
7364 (pf->flags & I40E_FLAG_DCB_ENABLED)) {
7365
7366 /* save num_tc_qps queues for TCs 1 thru 7 and the rest
7367 * are set up for RSS in TC0
7368 */
7369 queues_left -= accum_tc_size;
7370
7371 pf->rss_size = i40e_set_rss_size(pf, queues_left);
7372
7373 queues_left -= pf->rss_size;
7374 if (queues_left < 0) {
7375 dev_info(&pf->pdev->dev, "not enough queues for DCB\n");
7376 return;
7377 }
7378
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00007379 pf->num_lan_qps = pf->rss_size_max + accum_tc_size;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007380
7381 } else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
7382 (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
7383 !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
7384
7385 queues_left -= 1; /* save 1 queue for FD */
7386
7387 pf->rss_size = i40e_set_rss_size(pf, queues_left);
7388
7389 queues_left -= pf->rss_size;
7390 if (queues_left < 0) {
7391 dev_info(&pf->pdev->dev, "not enough queues for Flow Director\n");
7392 return;
7393 }
7394
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00007395 pf->num_lan_qps = pf->rss_size_max;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007396
7397 } else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
7398 (pf->flags & I40E_FLAG_FDIR_ENABLED) &&
7399 (pf->flags & I40E_FLAG_DCB_ENABLED)) {
7400
7401 /* save 1 queue for TCs 1 thru 7,
7402 * 1 queue for flow director,
7403 * and the rest are set up for RSS in TC0
7404 */
7405 queues_left -= 1;
7406 queues_left -= accum_tc_size;
7407
7408 pf->rss_size = i40e_set_rss_size(pf, queues_left);
7409 queues_left -= pf->rss_size;
7410 if (queues_left < 0) {
7411 dev_info(&pf->pdev->dev, "not enough queues for DCB and Flow Director\n");
7412 return;
7413 }
7414
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00007415 pf->num_lan_qps = pf->rss_size_max + accum_tc_size;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007416
7417 } else {
7418 dev_info(&pf->pdev->dev,
7419 "Invalid configuration, flags=0x%08llx\n", pf->flags);
7420 return;
7421 }
7422
7423 if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7424 pf->num_vf_qps && pf->num_req_vfs && queues_left) {
7425 pf->num_req_vfs = min_t(int, pf->num_req_vfs, (queues_left /
7426 pf->num_vf_qps));
7427 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
7428 }
7429
7430 if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7431 pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
7432 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
7433 (queues_left / pf->num_vmdq_qps));
7434 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
7435 }
7436
Anjali Singhai Jainf8ff1462013-11-26 10:49:19 +00007437 pf->queues_left = queues_left;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007438 return;
7439}
7440
7441/**
7442 * i40e_setup_pf_filter_control - Setup PF static filter control
7443 * @pf: PF to be setup
7444 *
7445 * i40e_setup_pf_filter_control sets up a pf's initial filter control
7446 * settings. If PE/FCoE are enabled then it will also set the per PF
7447 * based filter sizes required for them. It also enables Flow director,
7448 * ethertype and macvlan type filter settings for the pf.
7449 *
7450 * Returns 0 on success, negative on failure
7451 **/
7452static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
7453{
7454 struct i40e_filter_control_settings *settings = &pf->filter_settings;
7455
7456 settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
7457
7458 /* Flow Director is enabled */
7459 if (pf->flags & (I40E_FLAG_FDIR_ENABLED | I40E_FLAG_FDIR_ATR_ENABLED))
7460 settings->enable_fdir = true;
7461
7462 /* Ethtype and MACVLAN filters enabled for PF */
7463 settings->enable_ethtype = true;
7464 settings->enable_macvlan = true;
7465
7466 if (i40e_set_filter_control(&pf->hw, settings))
7467 return -ENOENT;
7468
7469 return 0;
7470}
7471
7472/**
7473 * i40e_probe - Device initialization routine
7474 * @pdev: PCI device information struct
7475 * @ent: entry in i40e_pci_tbl
7476 *
7477 * i40e_probe initializes a pf identified by a pci_dev structure.
7478 * The OS initialization, configuring of the pf private structure,
7479 * and a hardware reset occur.
7480 *
7481 * Returns 0 on success, negative on failure
7482 **/
7483static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7484{
7485 struct i40e_driver_version dv;
7486 struct i40e_pf *pf;
7487 struct i40e_hw *hw;
Anjali Singhai Jain93cd7652013-11-20 10:03:01 +00007488 static u16 pfs_found;
Catherine Sullivand4dfb812013-11-28 06:39:21 +00007489 u16 link_status;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007490 int err = 0;
7491 u32 len;
7492
7493 err = pci_enable_device_mem(pdev);
7494 if (err)
7495 return err;
7496
7497 /* set up for high or low dma */
7498 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
7499 /* coherent mask for the same size will always succeed if
7500 * dma_set_mask does
7501 */
7502 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
7503 } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
7504 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7505 } else {
7506 dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
7507 err = -EIO;
7508 goto err_dma;
7509 }
7510
7511 /* set up pci connections */
7512 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
7513 IORESOURCE_MEM), i40e_driver_name);
7514 if (err) {
7515 dev_info(&pdev->dev,
7516 "pci_request_selected_regions failed %d\n", err);
7517 goto err_pci_reg;
7518 }
7519
7520 pci_enable_pcie_error_reporting(pdev);
7521 pci_set_master(pdev);
7522
7523 /* Now that we have a PCI connection, we need to do the
7524 * low level device setup. This is primarily setting up
7525 * the Admin Queue structures and then querying for the
7526 * device's current profile information.
7527 */
7528 pf = kzalloc(sizeof(*pf), GFP_KERNEL);
7529 if (!pf) {
7530 err = -ENOMEM;
7531 goto err_pf_alloc;
7532 }
7533 pf->next_vsi = 0;
7534 pf->pdev = pdev;
7535 set_bit(__I40E_DOWN, &pf->state);
7536
7537 hw = &pf->hw;
7538 hw->back = pf;
7539 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
7540 pci_resource_len(pdev, 0));
7541 if (!hw->hw_addr) {
7542 err = -EIO;
7543 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
7544 (unsigned int)pci_resource_start(pdev, 0),
7545 (unsigned int)pci_resource_len(pdev, 0), err);
7546 goto err_ioremap;
7547 }
7548 hw->vendor_id = pdev->vendor;
7549 hw->device_id = pdev->device;
7550 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
7551 hw->subsystem_vendor_id = pdev->subsystem_vendor;
7552 hw->subsystem_device_id = pdev->subsystem_device;
7553 hw->bus.device = PCI_SLOT(pdev->devfn);
7554 hw->bus.func = PCI_FUNC(pdev->devfn);
Anjali Singhai Jain93cd7652013-11-20 10:03:01 +00007555 pf->instance = pfs_found;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007556
Jesse Brandeburg7134f9c2013-11-26 08:56:05 +00007557 /* do a special CORER for clearing PXE mode once at init */
7558 if (hw->revision_id == 0 &&
7559 (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
7560 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
7561 i40e_flush(hw);
7562 msleep(200);
7563 pf->corer_count++;
7564
7565 i40e_clear_pxe_mode(hw);
7566 }
7567
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007568 /* Reset here to make sure all is clean and to define PF 'n' */
7569 err = i40e_pf_reset(hw);
7570 if (err) {
7571 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
7572 goto err_pf_reset;
7573 }
7574 pf->pfr_count++;
7575
7576 hw->aq.num_arq_entries = I40E_AQ_LEN;
7577 hw->aq.num_asq_entries = I40E_AQ_LEN;
7578 hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7579 hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7580 pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
7581 snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
7582 "%s-pf%d:misc",
7583 dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
7584
7585 err = i40e_init_shared_code(hw);
7586 if (err) {
7587 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
7588 goto err_pf_reset;
7589 }
7590
Jesse Brandeburgd52c20b2013-11-26 10:49:15 +00007591 /* set up a default setting for link flow control */
7592 pf->hw.fc.requested_mode = I40E_FC_NONE;
7593
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007594 err = i40e_init_adminq(hw);
7595 dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
Anjali Singhai jainfe310702013-11-16 10:00:37 +00007596 if (((hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
7597 >> I40E_NVM_VERSION_HI_SHIFT) != I40E_CURRENT_NVM_VERSION_HI) {
7598 dev_info(&pdev->dev,
7599 "warning: NVM version not supported, supported version: %02x.%02x\n",
7600 I40E_CURRENT_NVM_VERSION_HI,
7601 I40E_CURRENT_NVM_VERSION_LO);
7602 }
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007603 if (err) {
7604 dev_info(&pdev->dev,
7605 "init_adminq failed: %d expecting API %02x.%02x\n",
7606 err,
7607 I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
7608 goto err_pf_reset;
7609 }
7610
7611 err = i40e_get_capabilities(pf);
7612 if (err)
7613 goto err_adminq_setup;
7614
7615 err = i40e_sw_init(pf);
7616 if (err) {
7617 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
7618 goto err_sw_init;
7619 }
7620
7621 err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7622 hw->func_caps.num_rx_qp,
7623 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7624 if (err) {
7625 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
7626 goto err_init_lan_hmc;
7627 }
7628
7629 err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7630 if (err) {
7631 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
7632 err = -ENOENT;
7633 goto err_configure_lan_hmc;
7634 }
7635
7636 i40e_get_mac_addr(hw, hw->mac.addr);
Jesse Brandeburgf62b5062013-11-28 06:39:27 +00007637 if (!is_valid_ether_addr(hw->mac.addr)) {
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007638 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
7639 err = -EIO;
7640 goto err_mac_addr;
7641 }
7642 dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
7643 memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
7644
7645 pci_set_drvdata(pdev, pf);
7646 pci_save_state(pdev);
7647
7648 /* set up periodic task facility */
7649 setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
7650 pf->service_timer_period = HZ;
7651
7652 INIT_WORK(&pf->service_task, i40e_service_task);
7653 clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7654 pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
7655 pf->link_check_timeout = jiffies;
7656
Shannon Nelson8e2773a2013-11-28 06:39:22 +00007657 /* WoL defaults to disabled */
7658 pf->wol_en = false;
7659 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
7660
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007661 /* set up the main switch operations */
7662 i40e_determine_queue_usage(pf);
7663 i40e_init_interrupt_scheme(pf);
7664
7665 /* Set up the *vsi struct based on the number of VSIs in the HW,
7666 * and set up our local tracking of the MAIN PF vsi.
7667 */
7668 len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
7669 pf->vsi = kzalloc(len, GFP_KERNEL);
Wei Yongjuned87ac02013-09-24 05:17:25 +00007670 if (!pf->vsi) {
7671 err = -ENOMEM;
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007672 goto err_switch_setup;
Wei Yongjuned87ac02013-09-24 05:17:25 +00007673 }
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007674
Anjali Singhai Jainbc7d3382013-11-26 10:49:18 +00007675 err = i40e_setup_pf_switch(pf, false);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007676 if (err) {
7677 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
7678 goto err_vsis;
7679 }
7680
7681 /* The main driver is (mostly) up and happy. We need to set this state
7682 * before setting up the misc vector or we get a race and the vector
7683 * ends up disabled forever.
7684 */
7685 clear_bit(__I40E_DOWN, &pf->state);
7686
7687 /* In case of MSIX we are going to setup the misc vector right here
7688 * to handle admin queue events etc. In case of legacy and MSI
7689 * the misc functionality and queue processing is combined in
7690 * the same vector and that gets setup at open.
7691 */
7692 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7693 err = i40e_setup_misc_vector(pf);
7694 if (err) {
7695 dev_info(&pdev->dev,
7696 "setup of misc vector failed: %d\n", err);
7697 goto err_vsis;
7698 }
7699 }
7700
7701 /* prep for VF support */
7702 if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7703 (pf->flags & I40E_FLAG_MSIX_ENABLED)) {
7704 u32 val;
7705
7706 /* disable link interrupts for VFs */
7707 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
7708 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
7709 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
7710 i40e_flush(hw);
7711 }
7712
Anjali Singhai Jain93cd7652013-11-20 10:03:01 +00007713 pfs_found++;
7714
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007715 i40e_dbg_pf_init(pf);
7716
7717 /* tell the firmware that we're starting */
7718 dv.major_version = DRV_VERSION_MAJOR;
7719 dv.minor_version = DRV_VERSION_MINOR;
7720 dv.build_version = DRV_VERSION_BUILD;
7721 dv.subbuild_version = 0;
7722 i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
7723
7724 /* since everything's happy, start the service_task timer */
7725 mod_timer(&pf->service_timer,
7726 round_jiffies(jiffies + pf->service_timer_period));
7727
Catherine Sullivand4dfb812013-11-28 06:39:21 +00007728 /* Get the negotiated link width and speed from PCI config space */
7729 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
7730
7731 i40e_set_pci_config_data(hw, link_status);
7732
7733 dev_info(&pdev->dev, "PCI Express: %s %s\n",
7734 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
7735 hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
7736 hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
7737 "Unknown"),
7738 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
7739 hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
7740 hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
7741 hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
7742 "Unknown"));
7743
7744 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
7745 hw->bus.speed < i40e_bus_speed_8000) {
7746 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
7747 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
7748 }
7749
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007750 return 0;
7751
7752 /* Unwind what we've done if something failed in the setup */
7753err_vsis:
7754 set_bit(__I40E_DOWN, &pf->state);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007755 i40e_clear_interrupt_scheme(pf);
7756 kfree(pf->vsi);
Shannon Nelson04b03012013-11-28 06:39:34 +00007757err_switch_setup:
7758 i40e_reset_interrupt_capability(pf);
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007759 del_timer_sync(&pf->service_timer);
7760err_mac_addr:
7761err_configure_lan_hmc:
7762 (void)i40e_shutdown_lan_hmc(hw);
7763err_init_lan_hmc:
7764 kfree(pf->qp_pile);
7765 kfree(pf->irq_pile);
7766err_sw_init:
7767err_adminq_setup:
7768 (void)i40e_shutdown_adminq(hw);
7769err_pf_reset:
7770 iounmap(hw->hw_addr);
7771err_ioremap:
7772 kfree(pf);
7773err_pf_alloc:
7774 pci_disable_pcie_error_reporting(pdev);
7775 pci_release_selected_regions(pdev,
7776 pci_select_bars(pdev, IORESOURCE_MEM));
7777err_pci_reg:
7778err_dma:
7779 pci_disable_device(pdev);
7780 return err;
7781}
7782
7783/**
7784 * i40e_remove - Device removal routine
7785 * @pdev: PCI device information struct
7786 *
7787 * i40e_remove is called by the PCI subsystem to alert the driver
7788 * that is should release a PCI device. This could be caused by a
7789 * Hot-Plug event, or because the driver is going to be removed from
7790 * memory.
7791 **/
7792static void i40e_remove(struct pci_dev *pdev)
7793{
7794 struct i40e_pf *pf = pci_get_drvdata(pdev);
7795 i40e_status ret_code;
7796 u32 reg;
7797 int i;
7798
7799 i40e_dbg_pf_exit(pf);
7800
7801 if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7802 i40e_free_vfs(pf);
7803 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
7804 }
7805
7806 /* no more scheduling of any task */
7807 set_bit(__I40E_DOWN, &pf->state);
7808 del_timer_sync(&pf->service_timer);
7809 cancel_work_sync(&pf->service_task);
7810
7811 i40e_fdir_teardown(pf);
7812
7813 /* If there is a switch structure or any orphans, remove them.
7814 * This will leave only the PF's VSI remaining.
7815 */
7816 for (i = 0; i < I40E_MAX_VEB; i++) {
7817 if (!pf->veb[i])
7818 continue;
7819
7820 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
7821 pf->veb[i]->uplink_seid == 0)
7822 i40e_switch_branch_release(pf->veb[i]);
7823 }
7824
7825 /* Now we can shutdown the PF's VSI, just before we kill
7826 * adminq and hmc.
7827 */
7828 if (pf->vsi[pf->lan_vsi])
7829 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
7830
7831 i40e_stop_misc_vector(pf);
7832 if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7833 synchronize_irq(pf->msix_entries[0].vector);
7834 free_irq(pf->msix_entries[0].vector, pf);
7835 }
7836
7837 /* shutdown and destroy the HMC */
7838 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
7839 if (ret_code)
7840 dev_warn(&pdev->dev,
7841 "Failed to destroy the HMC resources: %d\n", ret_code);
7842
7843 /* shutdown the adminq */
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007844 ret_code = i40e_shutdown_adminq(&pf->hw);
7845 if (ret_code)
7846 dev_warn(&pdev->dev,
7847 "Failed to destroy the Admin Queue resources: %d\n",
7848 ret_code);
7849
7850 /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
7851 i40e_clear_interrupt_scheme(pf);
7852 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7853 if (pf->vsi[i]) {
7854 i40e_vsi_clear_rings(pf->vsi[i]);
7855 i40e_vsi_clear(pf->vsi[i]);
7856 pf->vsi[i] = NULL;
7857 }
7858 }
7859
7860 for (i = 0; i < I40E_MAX_VEB; i++) {
7861 kfree(pf->veb[i]);
7862 pf->veb[i] = NULL;
7863 }
7864
7865 kfree(pf->qp_pile);
7866 kfree(pf->irq_pile);
7867 kfree(pf->sw_config);
7868 kfree(pf->vsi);
7869
7870 /* force a PF reset to clean anything leftover */
7871 reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
7872 wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
7873 i40e_flush(&pf->hw);
7874
7875 iounmap(pf->hw.hw_addr);
7876 kfree(pf);
7877 pci_release_selected_regions(pdev,
7878 pci_select_bars(pdev, IORESOURCE_MEM));
7879
7880 pci_disable_pcie_error_reporting(pdev);
7881 pci_disable_device(pdev);
7882}
7883
7884/**
7885 * i40e_pci_error_detected - warning that something funky happened in PCI land
7886 * @pdev: PCI device information struct
7887 *
7888 * Called to warn that something happened and the error handling steps
7889 * are in progress. Allows the driver to quiesce things, be ready for
7890 * remediation.
7891 **/
7892static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
7893 enum pci_channel_state error)
7894{
7895 struct i40e_pf *pf = pci_get_drvdata(pdev);
7896
7897 dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
7898
7899 /* shutdown all operations */
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007900 if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
7901 rtnl_lock();
7902 i40e_prep_for_reset(pf);
7903 rtnl_unlock();
7904 }
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007905
7906 /* Request a slot reset */
7907 return PCI_ERS_RESULT_NEED_RESET;
7908}
7909
7910/**
7911 * i40e_pci_error_slot_reset - a PCI slot reset just happened
7912 * @pdev: PCI device information struct
7913 *
7914 * Called to find if the driver can work with the device now that
7915 * the pci slot has been reset. If a basic connection seems good
7916 * (registers are readable and have sane content) then return a
7917 * happy little PCI_ERS_RESULT_xxx.
7918 **/
7919static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
7920{
7921 struct i40e_pf *pf = pci_get_drvdata(pdev);
7922 pci_ers_result_t result;
7923 int err;
7924 u32 reg;
7925
7926 dev_info(&pdev->dev, "%s\n", __func__);
7927 if (pci_enable_device_mem(pdev)) {
7928 dev_info(&pdev->dev,
7929 "Cannot re-enable PCI device after reset.\n");
7930 result = PCI_ERS_RESULT_DISCONNECT;
7931 } else {
7932 pci_set_master(pdev);
7933 pci_restore_state(pdev);
7934 pci_save_state(pdev);
7935 pci_wake_from_d3(pdev, false);
7936
7937 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
7938 if (reg == 0)
7939 result = PCI_ERS_RESULT_RECOVERED;
7940 else
7941 result = PCI_ERS_RESULT_DISCONNECT;
7942 }
7943
7944 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7945 if (err) {
7946 dev_info(&pdev->dev,
7947 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
7948 err);
7949 /* non-fatal, continue */
7950 }
7951
7952 return result;
7953}
7954
7955/**
7956 * i40e_pci_error_resume - restart operations after PCI error recovery
7957 * @pdev: PCI device information struct
7958 *
7959 * Called to allow the driver to bring things back up after PCI error
7960 * and/or reset recovery has finished.
7961 **/
7962static void i40e_pci_error_resume(struct pci_dev *pdev)
7963{
7964 struct i40e_pf *pf = pci_get_drvdata(pdev);
7965
7966 dev_info(&pdev->dev, "%s\n", __func__);
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007967 if (test_bit(__I40E_SUSPENDED, &pf->state))
7968 return;
7969
7970 rtnl_lock();
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007971 i40e_handle_reset_warning(pf);
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007972 rtnl_lock();
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00007973}
7974
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007975/**
7976 * i40e_shutdown - PCI callback for shutting down
7977 * @pdev: PCI device information struct
7978 **/
7979static void i40e_shutdown(struct pci_dev *pdev)
7980{
7981 struct i40e_pf *pf = pci_get_drvdata(pdev);
Shannon Nelson8e2773a2013-11-28 06:39:22 +00007982 struct i40e_hw *hw = &pf->hw;
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007983
7984 set_bit(__I40E_SUSPENDED, &pf->state);
7985 set_bit(__I40E_DOWN, &pf->state);
7986 rtnl_lock();
7987 i40e_prep_for_reset(pf);
7988 rtnl_unlock();
7989
Shannon Nelson8e2773a2013-11-28 06:39:22 +00007990 wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
7991 wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
7992
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007993 if (system_state == SYSTEM_POWER_OFF) {
Shannon Nelson8e2773a2013-11-28 06:39:22 +00007994 pci_wake_from_d3(pdev, pf->wol_en);
Shannon Nelson9007bcc2013-11-26 10:49:23 +00007995 pci_set_power_state(pdev, PCI_D3hot);
7996 }
7997}
7998
7999#ifdef CONFIG_PM
8000/**
8001 * i40e_suspend - PCI callback for moving to D3
8002 * @pdev: PCI device information struct
8003 **/
8004static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8005{
8006 struct i40e_pf *pf = pci_get_drvdata(pdev);
Shannon Nelson8e2773a2013-11-28 06:39:22 +00008007 struct i40e_hw *hw = &pf->hw;
Shannon Nelson9007bcc2013-11-26 10:49:23 +00008008
8009 set_bit(__I40E_SUSPENDED, &pf->state);
8010 set_bit(__I40E_DOWN, &pf->state);
8011 rtnl_lock();
8012 i40e_prep_for_reset(pf);
8013 rtnl_unlock();
8014
Shannon Nelson8e2773a2013-11-28 06:39:22 +00008015 wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8016 wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8017
8018 pci_wake_from_d3(pdev, pf->wol_en);
Shannon Nelson9007bcc2013-11-26 10:49:23 +00008019 pci_set_power_state(pdev, PCI_D3hot);
8020
8021 return 0;
8022}
8023
8024/**
8025 * i40e_resume - PCI callback for waking up from D3
8026 * @pdev: PCI device information struct
8027 **/
8028static int i40e_resume(struct pci_dev *pdev)
8029{
8030 struct i40e_pf *pf = pci_get_drvdata(pdev);
8031 u32 err;
8032
8033 pci_set_power_state(pdev, PCI_D0);
8034 pci_restore_state(pdev);
8035 /* pci_restore_state() clears dev->state_saves, so
8036 * call pci_save_state() again to restore it.
8037 */
8038 pci_save_state(pdev);
8039
8040 err = pci_enable_device_mem(pdev);
8041 if (err) {
8042 dev_err(&pdev->dev,
8043 "%s: Cannot enable PCI device from suspend\n",
8044 __func__);
8045 return err;
8046 }
8047 pci_set_master(pdev);
8048
8049 /* no wakeup events while running */
8050 pci_wake_from_d3(pdev, false);
8051
8052 /* handling the reset will rebuild the device state */
8053 if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8054 clear_bit(__I40E_DOWN, &pf->state);
8055 rtnl_lock();
8056 i40e_reset_and_rebuild(pf, false);
8057 rtnl_unlock();
8058 }
8059
8060 return 0;
8061}
8062
8063#endif
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00008064static const struct pci_error_handlers i40e_err_handler = {
8065 .error_detected = i40e_pci_error_detected,
8066 .slot_reset = i40e_pci_error_slot_reset,
8067 .resume = i40e_pci_error_resume,
8068};
8069
8070static struct pci_driver i40e_driver = {
8071 .name = i40e_driver_name,
8072 .id_table = i40e_pci_tbl,
8073 .probe = i40e_probe,
8074 .remove = i40e_remove,
Shannon Nelson9007bcc2013-11-26 10:49:23 +00008075#ifdef CONFIG_PM
8076 .suspend = i40e_suspend,
8077 .resume = i40e_resume,
8078#endif
8079 .shutdown = i40e_shutdown,
Jesse Brandeburg41c445f2013-09-11 08:39:46 +00008080 .err_handler = &i40e_err_handler,
8081 .sriov_configure = i40e_pci_sriov_configure,
8082};
8083
8084/**
8085 * i40e_init_module - Driver registration routine
8086 *
8087 * i40e_init_module is the first routine called when the driver is
8088 * loaded. All it does is register with the PCI subsystem.
8089 **/
8090static int __init i40e_init_module(void)
8091{
8092 pr_info("%s: %s - version %s\n", i40e_driver_name,
8093 i40e_driver_string, i40e_driver_version_str);
8094 pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8095 i40e_dbg_init();
8096 return pci_register_driver(&i40e_driver);
8097}
8098module_init(i40e_init_module);
8099
8100/**
8101 * i40e_exit_module - Driver exit cleanup routine
8102 *
8103 * i40e_exit_module is called just before the driver is removed
8104 * from memory.
8105 **/
8106static void __exit i40e_exit_module(void)
8107{
8108 pci_unregister_driver(&i40e_driver);
8109 i40e_dbg_exit();
8110}
8111module_exit(i40e_exit_module);