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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include <linux/list.h>
5#include <linux/errno.h>
6#include <linux/net/intel/i40e_client.h>
7
8#include "i40e.h"
9
10static LIST_HEAD(i40e_devices);
11static DEFINE_MUTEX(i40e_device_mutex);
12DEFINE_IDA(i40e_client_ida);
13
14static int i40e_client_virtchnl_send(struct i40e_info *ldev,
15 struct i40e_client *client,
16 u32 vf_id, u8 *msg, u16 len);
17
18static int i40e_client_setup_qvlist(struct i40e_info *ldev,
19 struct i40e_client *client,
20 struct i40e_qvlist_info *qvlist_info);
21
22static void i40e_client_request_reset(struct i40e_info *ldev,
23 struct i40e_client *client,
24 u32 reset_level);
25
26static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
27 struct i40e_client *client,
28 bool is_vf, u32 vf_id,
29 u32 flag, u32 valid_flag);
30
31static struct i40e_ops i40e_lan_ops = {
32 .virtchnl_send = i40e_client_virtchnl_send,
33 .setup_qvlist = i40e_client_setup_qvlist,
34 .request_reset = i40e_client_request_reset,
35 .update_vsi_ctxt = i40e_client_update_vsi_ctxt,
36};
37
38/**
39 * i40e_client_get_params - Get the params that can change at runtime
40 * @vsi: the VSI with the message
41 * @params: client param struct
42 *
43 **/
44static
45int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params)
46{
47 struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config;
48 int i = 0;
49
50 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
51 u8 tc = dcb_cfg->etscfg.prioritytable[i];
52 u16 qs_handle;
53
54 /* If TC is not enabled for VSI use TC0 for UP */
55 if (!(vsi->tc_config.enabled_tc & BIT(tc)))
56 tc = 0;
57
58 qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]);
59 params->qos.prio_qos[i].tc = tc;
60 params->qos.prio_qos[i].qs_handle = qs_handle;
61 if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) {
62 dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n",
63 tc, vsi->id);
64 return -EINVAL;
65 }
66 }
67
68 params->mtu = vsi->netdev->mtu;
69 return 0;
70}
71
72/**
73 * i40e_notify_client_of_vf_msg - call the client vf message callback
74 * @vsi: the VSI with the message
75 * @vf_id: the absolute VF id that sent the message
76 * @msg: message buffer
77 * @len: length of the message
78 *
79 * If there is a client to this VSI, call the client
80 **/
81void
82i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len)
83{
84 struct i40e_pf *pf = vsi->back;
85 struct i40e_client_instance *cdev = pf->cinst;
86
87 if (!cdev || !cdev->client)
88 return;
89 if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) {
90 dev_dbg(&pf->pdev->dev,
91 "Cannot locate client instance virtual channel receive routine\n");
92 return;
93 }
94 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
95 dev_dbg(&pf->pdev->dev, "Client is not open, abort virtchnl_receive\n");
96 return;
97 }
98 cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client,
99 vf_id, msg, len);
100}
101
102/**
103 * i40e_notify_client_of_l2_param_changes - call the client notify callback
104 * @pf: PF device pointer
105 *
106 * If there is a client, call its callback
107 **/
108void i40e_notify_client_of_l2_param_changes(struct i40e_pf *pf)
109{
110 struct i40e_vsi *vsi = i40e_pf_get_main_vsi(pf);
111 struct i40e_client_instance *cdev = pf->cinst;
112 struct i40e_params params;
113
114 if (!cdev || !cdev->client)
115 return;
116 if (!cdev->client->ops || !cdev->client->ops->l2_param_change) {
117 dev_dbg(&pf->pdev->dev,
118 "Cannot locate client instance l2_param_change routine\n");
119 return;
120 }
121 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
122 dev_dbg(&pf->pdev->dev,
123 "Client is not open, abort l2 param change\n");
124 return;
125 }
126 memset(¶ms, 0, sizeof(params));
127 i40e_client_get_params(vsi, ¶ms);
128 memcpy(&cdev->lan_info.params, ¶ms, sizeof(struct i40e_params));
129 cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client,
130 ¶ms);
131}
132
133/**
134 * i40e_client_release_qvlist - release MSI-X vector mapping for client
135 * @ldev: pointer to L2 context.
136 *
137 **/
138static void i40e_client_release_qvlist(struct i40e_info *ldev)
139{
140 struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info;
141 u32 i;
142
143 if (!ldev->qvlist_info)
144 return;
145
146 for (i = 0; i < qvlist_info->num_vectors; i++) {
147 struct i40e_pf *pf = ldev->pf;
148 struct i40e_qv_info *qv_info;
149 u32 reg_idx;
150
151 qv_info = &qvlist_info->qv_info[i];
152 reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1);
153 wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
154 }
155 kfree(ldev->qvlist_info);
156 ldev->qvlist_info = NULL;
157}
158
159/**
160 * i40e_notify_client_of_netdev_close - call the client close callback
161 * @pf: PF device pointer
162 * @reset: true when close called due to a reset pending
163 *
164 * If there is a client to this netdev, call the client with close
165 **/
166void i40e_notify_client_of_netdev_close(struct i40e_pf *pf, bool reset)
167{
168 struct i40e_client_instance *cdev = pf->cinst;
169
170 if (!cdev || !cdev->client)
171 return;
172 if (!cdev->client->ops || !cdev->client->ops->close) {
173 dev_dbg(&pf->pdev->dev,
174 "Cannot locate client instance close routine\n");
175 return;
176 }
177 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
178 dev_dbg(&pf->pdev->dev, "Client is not open, abort close\n");
179 return;
180 }
181 cdev->client->ops->close(&cdev->lan_info, cdev->client, reset);
182 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
183 i40e_client_release_qvlist(&cdev->lan_info);
184}
185
186/**
187 * i40e_notify_client_of_vf_reset - call the client vf reset callback
188 * @pf: PF device pointer
189 * @vf_id: asolute id of VF being reset
190 *
191 * If there is a client attached to this PF, notify when a VF is reset
192 **/
193void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id)
194{
195 struct i40e_client_instance *cdev = pf->cinst;
196
197 if (!cdev || !cdev->client)
198 return;
199 if (!cdev->client->ops || !cdev->client->ops->vf_reset) {
200 dev_dbg(&pf->pdev->dev,
201 "Cannot locate client instance VF reset routine\n");
202 return;
203 }
204 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
205 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n");
206 return;
207 }
208 cdev->client->ops->vf_reset(&cdev->lan_info, cdev->client, vf_id);
209}
210
211/**
212 * i40e_notify_client_of_vf_enable - call the client vf notification callback
213 * @pf: PF device pointer
214 * @num_vfs: the number of VFs currently enabled, 0 for disable
215 *
216 * If there is a client attached to this PF, call its VF notification routine
217 **/
218void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs)
219{
220 struct i40e_client_instance *cdev = pf->cinst;
221
222 if (!cdev || !cdev->client)
223 return;
224 if (!cdev->client->ops || !cdev->client->ops->vf_enable) {
225 dev_dbg(&pf->pdev->dev,
226 "Cannot locate client instance VF enable routine\n");
227 return;
228 }
229 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
230 &cdev->state)) {
231 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n");
232 return;
233 }
234 cdev->client->ops->vf_enable(&cdev->lan_info, cdev->client, num_vfs);
235}
236
237/**
238 * i40e_vf_client_capable - ask the client if it likes the specified VF
239 * @pf: PF device pointer
240 * @vf_id: the VF in question
241 *
242 * If there is a client of the specified type attached to this PF, call
243 * its vf_capable routine
244 **/
245int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id)
246{
247 struct i40e_client_instance *cdev = pf->cinst;
248 int capable = false;
249
250 if (!cdev || !cdev->client)
251 goto out;
252 if (!cdev->client->ops || !cdev->client->ops->vf_capable) {
253 dev_dbg(&pf->pdev->dev,
254 "Cannot locate client instance VF capability routine\n");
255 goto out;
256 }
257 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state))
258 goto out;
259
260 capable = cdev->client->ops->vf_capable(&cdev->lan_info,
261 cdev->client,
262 vf_id);
263out:
264 return capable;
265}
266
267void i40e_client_update_msix_info(struct i40e_pf *pf)
268{
269 struct i40e_client_instance *cdev = pf->cinst;
270
271 if (!cdev || !cdev->client)
272 return;
273
274 cdev->lan_info.msix_count = pf->num_iwarp_msix;
275 cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector];
276}
277
278static void i40e_auxiliary_dev_release(struct device *dev)
279{
280 struct i40e_auxiliary_device *i40e_aux_dev =
281 container_of(dev, struct i40e_auxiliary_device, aux_dev.dev);
282
283 ida_free(&i40e_client_ida, i40e_aux_dev->aux_dev.id);
284 kfree(i40e_aux_dev);
285}
286
287static int i40e_register_auxiliary_dev(struct i40e_info *ldev, const char *name)
288{
289 struct i40e_auxiliary_device *i40e_aux_dev;
290 struct pci_dev *pdev = ldev->pcidev;
291 struct auxiliary_device *aux_dev;
292 int ret;
293
294 i40e_aux_dev = kzalloc(sizeof(*i40e_aux_dev), GFP_KERNEL);
295 if (!i40e_aux_dev)
296 return -ENOMEM;
297
298 i40e_aux_dev->ldev = ldev;
299
300 aux_dev = &i40e_aux_dev->aux_dev;
301 aux_dev->name = name;
302 aux_dev->dev.parent = &pdev->dev;
303 aux_dev->dev.release = i40e_auxiliary_dev_release;
304 ldev->aux_dev = aux_dev;
305
306 ret = ida_alloc(&i40e_client_ida, GFP_KERNEL);
307 if (ret < 0) {
308 kfree(i40e_aux_dev);
309 return ret;
310 }
311 aux_dev->id = ret;
312
313 ret = auxiliary_device_init(aux_dev);
314 if (ret < 0) {
315 ida_free(&i40e_client_ida, aux_dev->id);
316 kfree(i40e_aux_dev);
317 return ret;
318 }
319
320 ret = auxiliary_device_add(aux_dev);
321 if (ret) {
322 auxiliary_device_uninit(aux_dev);
323 return ret;
324 }
325
326 return ret;
327}
328
329/**
330 * i40e_client_add_instance - add a client instance struct to the instance list
331 * @pf: pointer to the board struct
332 *
333 **/
334static void i40e_client_add_instance(struct i40e_pf *pf)
335{
336 struct i40e_vsi *vsi = i40e_pf_get_main_vsi(pf);
337 struct i40e_client_instance *cdev = NULL;
338 struct netdev_hw_addr *mac = NULL;
339
340 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
341 if (!cdev)
342 return;
343
344 cdev->lan_info.pf = (void *)pf;
345 cdev->lan_info.netdev = vsi->netdev;
346 cdev->lan_info.pcidev = pf->pdev;
347 cdev->lan_info.fid = pf->hw.pf_id;
348 cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF;
349 cdev->lan_info.hw_addr = pf->hw.hw_addr;
350 cdev->lan_info.ops = &i40e_lan_ops;
351 cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR;
352 cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR;
353 cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD;
354 cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver;
355 cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver;
356 cdev->lan_info.fw_build = pf->hw.aq.fw_build;
357 set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state);
358
359 if (i40e_client_get_params(vsi, &cdev->lan_info.params))
360 goto free_cdev;
361
362 mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list,
363 struct netdev_hw_addr, list);
364 if (mac)
365 ether_addr_copy(cdev->lan_info.lanmac, mac->addr);
366 else
367 dev_err(&pf->pdev->dev, "MAC address list is empty!\n");
368
369 pf->cinst = cdev;
370
371 cdev->lan_info.msix_count = pf->num_iwarp_msix;
372 cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector];
373
374 if (i40e_register_auxiliary_dev(&cdev->lan_info, "iwarp"))
375 goto free_cdev;
376
377 return;
378
379free_cdev:
380 kfree(cdev);
381 pf->cinst = NULL;
382}
383
384/**
385 * i40e_client_del_instance - removes a client instance from the list
386 * @pf: pointer to the board struct
387 *
388 **/
389static
390void i40e_client_del_instance(struct i40e_pf *pf)
391{
392 kfree(pf->cinst);
393 pf->cinst = NULL;
394}
395
396/**
397 * i40e_client_subtask - client maintenance work
398 * @pf: board private structure
399 **/
400void i40e_client_subtask(struct i40e_pf *pf)
401{
402 struct i40e_vsi *vsi = i40e_pf_get_main_vsi(pf);
403 struct i40e_client_instance *cdev;
404 struct i40e_client *client;
405 int ret = 0;
406
407 if (!test_and_clear_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state))
408 return;
409 cdev = pf->cinst;
410
411 /* If we're down or resetting, just bail */
412 if (test_bit(__I40E_DOWN, pf->state) ||
413 test_bit(__I40E_CONFIG_BUSY, pf->state))
414 return;
415
416 if (!cdev || !cdev->client)
417 return;
418
419 client = cdev->client;
420
421 /* Here we handle client opens. If the client is down, and
422 * the netdev is registered, then open the client.
423 */
424 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
425 if (vsi->netdev_registered &&
426 client->ops && client->ops->open) {
427 set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
428 ret = client->ops->open(&cdev->lan_info, client);
429 if (ret) {
430 /* Remove failed client instance */
431 clear_bit(__I40E_CLIENT_INSTANCE_OPENED,
432 &cdev->state);
433 return;
434 }
435 }
436 }
437
438 /* enable/disable PE TCP_ENA flag based on netdev down/up
439 */
440 if (test_bit(__I40E_VSI_DOWN, vsi->state))
441 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
442 0, 0, 0,
443 I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
444 else
445 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
446 0, 0,
447 I40E_CLIENT_VSI_FLAG_TCP_ENABLE,
448 I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
449}
450
451/**
452 * i40e_lan_add_device - add a lan device struct to the list of lan devices
453 * @pf: pointer to the board struct
454 *
455 * Returns 0 on success or none 0 on error
456 **/
457int i40e_lan_add_device(struct i40e_pf *pf)
458{
459 struct i40e_device *ldev;
460 int ret = 0;
461
462 mutex_lock(&i40e_device_mutex);
463 list_for_each_entry(ldev, &i40e_devices, list) {
464 if (ldev->pf == pf) {
465 ret = -EEXIST;
466 goto out;
467 }
468 }
469 ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
470 if (!ldev) {
471 ret = -ENOMEM;
472 goto out;
473 }
474 ldev->pf = pf;
475 INIT_LIST_HEAD(&ldev->list);
476 list_add(&ldev->list, &i40e_devices);
477 dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
478 pf->hw.pf_id, pf->hw.bus.bus_id,
479 pf->hw.bus.device, pf->hw.bus.func);
480
481 i40e_client_add_instance(pf);
482
483 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
484 i40e_service_event_schedule(pf);
485
486out:
487 mutex_unlock(&i40e_device_mutex);
488 return ret;
489}
490
491/**
492 * i40e_lan_del_device - removes a lan device from the device list
493 * @pf: pointer to the board struct
494 *
495 * Returns 0 on success or non-0 on error
496 **/
497int i40e_lan_del_device(struct i40e_pf *pf)
498{
499 struct auxiliary_device *aux_dev = pf->cinst->lan_info.aux_dev;
500 struct i40e_device *ldev, *tmp;
501 int ret = -ENODEV;
502
503 auxiliary_device_delete(aux_dev);
504 auxiliary_device_uninit(aux_dev);
505
506 /* First, remove any client instance. */
507 i40e_client_del_instance(pf);
508
509 mutex_lock(&i40e_device_mutex);
510 list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
511 if (ldev->pf == pf) {
512 dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
513 pf->hw.pf_id, pf->hw.bus.bus_id,
514 pf->hw.bus.device, pf->hw.bus.func);
515 list_del(&ldev->list);
516 kfree(ldev);
517 ret = 0;
518 break;
519 }
520 }
521 mutex_unlock(&i40e_device_mutex);
522 return ret;
523}
524
525/**
526 * i40e_client_virtchnl_send - TBD
527 * @ldev: pointer to L2 context
528 * @client: Client pointer
529 * @vf_id: absolute VF identifier
530 * @msg: message buffer
531 * @len: length of message buffer
532 *
533 * Return 0 on success or < 0 on error
534 **/
535static int i40e_client_virtchnl_send(struct i40e_info *ldev,
536 struct i40e_client *client,
537 u32 vf_id, u8 *msg, u16 len)
538{
539 struct i40e_pf *pf = ldev->pf;
540 struct i40e_hw *hw = &pf->hw;
541 int err;
542
543 err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_RDMA,
544 0, msg, len, NULL);
545 if (err)
546 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
547 err, hw->aq.asq_last_status);
548
549 return err;
550}
551
552/**
553 * i40e_client_setup_qvlist
554 * @ldev: pointer to L2 context.
555 * @client: Client pointer.
556 * @qvlist_info: queue and vector list
557 *
558 * Return 0 on success or < 0 on error
559 **/
560static int i40e_client_setup_qvlist(struct i40e_info *ldev,
561 struct i40e_client *client,
562 struct i40e_qvlist_info *qvlist_info)
563{
564 struct i40e_pf *pf = ldev->pf;
565 struct i40e_hw *hw = &pf->hw;
566 struct i40e_qv_info *qv_info;
567 u32 v_idx, i, reg_idx, reg;
568
569 ldev->qvlist_info = kzalloc(struct_size(ldev->qvlist_info, qv_info,
570 qvlist_info->num_vectors), GFP_KERNEL);
571 if (!ldev->qvlist_info)
572 return -ENOMEM;
573 ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
574
575 for (i = 0; i < qvlist_info->num_vectors; i++) {
576 qv_info = &qvlist_info->qv_info[i];
577 v_idx = qv_info->v_idx;
578
579 /* Validate vector id belongs to this client */
580 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
581 (v_idx < pf->iwarp_base_vector))
582 goto err;
583
584 ldev->qvlist_info->qv_info[i] = *qv_info;
585 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
586
587 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
588 /* Special case - No CEQ mapped on this vector */
589 wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
590 } else {
591 reg = (qv_info->ceq_idx &
592 I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
593 (I40E_QUEUE_TYPE_PE_CEQ <<
594 I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
595 wr32(hw, reg_idx, reg);
596
597 reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
598 (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
599 (qv_info->itr_idx <<
600 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
601 (I40E_QUEUE_END_OF_LIST <<
602 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
603 wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
604 }
605 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
606 reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
607 (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
608 (qv_info->itr_idx <<
609 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
610
611 wr32(hw, I40E_PFINT_AEQCTL, reg);
612 }
613 }
614 /* Mitigate sync problems with iwarp VF driver */
615 i40e_flush(hw);
616 return 0;
617err:
618 kfree(ldev->qvlist_info);
619 ldev->qvlist_info = NULL;
620 return -EINVAL;
621}
622
623/**
624 * i40e_client_request_reset
625 * @ldev: pointer to L2 context.
626 * @client: Client pointer.
627 * @reset_level: reset level
628 **/
629static void i40e_client_request_reset(struct i40e_info *ldev,
630 struct i40e_client *client,
631 u32 reset_level)
632{
633 struct i40e_pf *pf = ldev->pf;
634
635 switch (reset_level) {
636 case I40E_CLIENT_RESET_LEVEL_PF:
637 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
638 break;
639 case I40E_CLIENT_RESET_LEVEL_CORE:
640 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
641 break;
642 default:
643 dev_warn(&pf->pdev->dev,
644 "Client for PF id %d requested an unsupported reset: %d.\n",
645 pf->hw.pf_id, reset_level);
646 break;
647 }
648
649 i40e_service_event_schedule(pf);
650}
651
652/**
653 * i40e_client_update_vsi_ctxt
654 * @ldev: pointer to L2 context.
655 * @client: Client pointer.
656 * @is_vf: if this for the VF
657 * @vf_id: if is_vf true this carries the vf_id
658 * @flag: Any device level setting that needs to be done for PE
659 * @valid_flag: Bits in this match up and enable changing of flag bits
660 *
661 * Return 0 on success or < 0 on error
662 **/
663static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
664 struct i40e_client *client,
665 bool is_vf, u32 vf_id,
666 u32 flag, u32 valid_flag)
667{
668 struct i40e_vsi *vsi = i40e_pf_get_main_vsi(ldev->pf);
669 struct i40e_pf *pf = ldev->pf;
670 struct i40e_vsi_context ctxt;
671 bool update = true;
672 int err;
673
674 /* TODO: for now do not allow setting VF's VSI setting */
675 if (is_vf)
676 return -EINVAL;
677
678 ctxt.seid = pf->main_vsi_seid;
679 ctxt.pf_num = pf->hw.pf_id;
680 err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
681 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
682 if (err) {
683 dev_info(&pf->pdev->dev,
684 "couldn't get PF vsi config, err %pe aq_err %s\n",
685 ERR_PTR(err),
686 i40e_aq_str(&pf->hw,
687 pf->hw.aq.asq_last_status));
688 return -ENOENT;
689 }
690
691 if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
692 (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
693 ctxt.info.valid_sections =
694 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
695 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
696 } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
697 !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
698 ctxt.info.valid_sections =
699 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
700 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
701 } else {
702 update = false;
703 dev_warn(&pf->pdev->dev,
704 "Client for PF id %d request an unsupported Config: %x.\n",
705 pf->hw.pf_id, flag);
706 }
707
708 if (update) {
709 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
710 if (err) {
711 dev_info(&pf->pdev->dev,
712 "update VSI ctxt for PE failed, err %pe aq_err %s\n",
713 ERR_PTR(err),
714 i40e_aq_str(&pf->hw,
715 pf->hw.aq.asq_last_status));
716 }
717 }
718 return err;
719}
720
721void i40e_client_device_register(struct i40e_info *ldev, struct i40e_client *client)
722{
723 struct i40e_pf *pf = ldev->pf;
724
725 pf->cinst->client = client;
726 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
727 i40e_service_event_schedule(pf);
728}
729EXPORT_SYMBOL_GPL(i40e_client_device_register);
730
731void i40e_client_device_unregister(struct i40e_info *ldev)
732{
733 struct i40e_pf *pf = ldev->pf;
734 struct i40e_client_instance *cdev = pf->cinst;
735
736 if (!cdev)
737 return;
738
739 while (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
740 usleep_range(500, 1000);
741
742 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
743 cdev->client->ops->close(&cdev->lan_info, cdev->client, false);
744 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
745 i40e_client_release_qvlist(&cdev->lan_info);
746 }
747
748 pf->cinst->client = NULL;
749 clear_bit(__I40E_SERVICE_SCHED, pf->state);
750}
751EXPORT_SYMBOL_GPL(i40e_client_device_unregister);
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include <linux/list.h>
5#include <linux/errno.h>
6
7#include "i40e.h"
8#include "i40e_prototype.h"
9#include "i40e_client.h"
10
11static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR;
12static struct i40e_client *registered_client;
13static LIST_HEAD(i40e_devices);
14static DEFINE_MUTEX(i40e_device_mutex);
15
16static int i40e_client_virtchnl_send(struct i40e_info *ldev,
17 struct i40e_client *client,
18 u32 vf_id, u8 *msg, u16 len);
19
20static int i40e_client_setup_qvlist(struct i40e_info *ldev,
21 struct i40e_client *client,
22 struct i40e_qvlist_info *qvlist_info);
23
24static void i40e_client_request_reset(struct i40e_info *ldev,
25 struct i40e_client *client,
26 u32 reset_level);
27
28static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
29 struct i40e_client *client,
30 bool is_vf, u32 vf_id,
31 u32 flag, u32 valid_flag);
32
33static struct i40e_ops i40e_lan_ops = {
34 .virtchnl_send = i40e_client_virtchnl_send,
35 .setup_qvlist = i40e_client_setup_qvlist,
36 .request_reset = i40e_client_request_reset,
37 .update_vsi_ctxt = i40e_client_update_vsi_ctxt,
38};
39
40/**
41 * i40e_client_get_params - Get the params that can change at runtime
42 * @vsi: the VSI with the message
43 * @params: client param struct
44 *
45 **/
46static
47int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params)
48{
49 struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config;
50 int i = 0;
51
52 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
53 u8 tc = dcb_cfg->etscfg.prioritytable[i];
54 u16 qs_handle;
55
56 /* If TC is not enabled for VSI use TC0 for UP */
57 if (!(vsi->tc_config.enabled_tc & BIT(tc)))
58 tc = 0;
59
60 qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]);
61 params->qos.prio_qos[i].tc = tc;
62 params->qos.prio_qos[i].qs_handle = qs_handle;
63 if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) {
64 dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n",
65 tc, vsi->id);
66 return -EINVAL;
67 }
68 }
69
70 params->mtu = vsi->netdev->mtu;
71 return 0;
72}
73
74/**
75 * i40e_notify_client_of_vf_msg - call the client vf message callback
76 * @vsi: the VSI with the message
77 * @vf_id: the absolute VF id that sent the message
78 * @msg: message buffer
79 * @len: length of the message
80 *
81 * If there is a client to this VSI, call the client
82 **/
83void
84i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len)
85{
86 struct i40e_pf *pf = vsi->back;
87 struct i40e_client_instance *cdev = pf->cinst;
88
89 if (!cdev || !cdev->client)
90 return;
91 if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) {
92 dev_dbg(&pf->pdev->dev,
93 "Cannot locate client instance virtual channel receive routine\n");
94 return;
95 }
96 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
97 dev_dbg(&pf->pdev->dev, "Client is not open, abort virtchnl_receive\n");
98 return;
99 }
100 cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client,
101 vf_id, msg, len);
102}
103
104/**
105 * i40e_notify_client_of_l2_param_changes - call the client notify callback
106 * @vsi: the VSI with l2 param changes
107 *
108 * If there is a client to this VSI, call the client
109 **/
110void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi)
111{
112 struct i40e_pf *pf = vsi->back;
113 struct i40e_client_instance *cdev = pf->cinst;
114 struct i40e_params params;
115
116 if (!cdev || !cdev->client)
117 return;
118 if (!cdev->client->ops || !cdev->client->ops->l2_param_change) {
119 dev_dbg(&vsi->back->pdev->dev,
120 "Cannot locate client instance l2_param_change routine\n");
121 return;
122 }
123 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
124 dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n");
125 return;
126 }
127 memset(¶ms, 0, sizeof(params));
128 i40e_client_get_params(vsi, ¶ms);
129 memcpy(&cdev->lan_info.params, ¶ms, sizeof(struct i40e_params));
130 cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client,
131 ¶ms);
132}
133
134/**
135 * i40e_client_release_qvlist - release MSI-X vector mapping for client
136 * @ldev: pointer to L2 context.
137 *
138 **/
139static void i40e_client_release_qvlist(struct i40e_info *ldev)
140{
141 struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info;
142 u32 i;
143
144 if (!ldev->qvlist_info)
145 return;
146
147 for (i = 0; i < qvlist_info->num_vectors; i++) {
148 struct i40e_pf *pf = ldev->pf;
149 struct i40e_qv_info *qv_info;
150 u32 reg_idx;
151
152 qv_info = &qvlist_info->qv_info[i];
153 if (!qv_info)
154 continue;
155 reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1);
156 wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
157 }
158 kfree(ldev->qvlist_info);
159 ldev->qvlist_info = NULL;
160}
161
162/**
163 * i40e_notify_client_of_netdev_close - call the client close callback
164 * @vsi: the VSI with netdev closed
165 * @reset: true when close called due to a reset pending
166 *
167 * If there is a client to this netdev, call the client with close
168 **/
169void i40e_notify_client_of_netdev_close(struct i40e_vsi *vsi, bool reset)
170{
171 struct i40e_pf *pf = vsi->back;
172 struct i40e_client_instance *cdev = pf->cinst;
173
174 if (!cdev || !cdev->client)
175 return;
176 if (!cdev->client->ops || !cdev->client->ops->close) {
177 dev_dbg(&vsi->back->pdev->dev,
178 "Cannot locate client instance close routine\n");
179 return;
180 }
181 cdev->client->ops->close(&cdev->lan_info, cdev->client, reset);
182 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
183 i40e_client_release_qvlist(&cdev->lan_info);
184}
185
186/**
187 * i40e_notify_client_of_vf_reset - call the client vf reset callback
188 * @pf: PF device pointer
189 * @vf_id: asolute id of VF being reset
190 *
191 * If there is a client attached to this PF, notify when a VF is reset
192 **/
193void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id)
194{
195 struct i40e_client_instance *cdev = pf->cinst;
196
197 if (!cdev || !cdev->client)
198 return;
199 if (!cdev->client->ops || !cdev->client->ops->vf_reset) {
200 dev_dbg(&pf->pdev->dev,
201 "Cannot locate client instance VF reset routine\n");
202 return;
203 }
204 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
205 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n");
206 return;
207 }
208 cdev->client->ops->vf_reset(&cdev->lan_info, cdev->client, vf_id);
209}
210
211/**
212 * i40e_notify_client_of_vf_enable - call the client vf notification callback
213 * @pf: PF device pointer
214 * @num_vfs: the number of VFs currently enabled, 0 for disable
215 *
216 * If there is a client attached to this PF, call its VF notification routine
217 **/
218void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs)
219{
220 struct i40e_client_instance *cdev = pf->cinst;
221
222 if (!cdev || !cdev->client)
223 return;
224 if (!cdev->client->ops || !cdev->client->ops->vf_enable) {
225 dev_dbg(&pf->pdev->dev,
226 "Cannot locate client instance VF enable routine\n");
227 return;
228 }
229 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
230 &cdev->state)) {
231 dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n");
232 return;
233 }
234 cdev->client->ops->vf_enable(&cdev->lan_info, cdev->client, num_vfs);
235}
236
237/**
238 * i40e_vf_client_capable - ask the client if it likes the specified VF
239 * @pf: PF device pointer
240 * @vf_id: the VF in question
241 *
242 * If there is a client of the specified type attached to this PF, call
243 * its vf_capable routine
244 **/
245int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id)
246{
247 struct i40e_client_instance *cdev = pf->cinst;
248 int capable = false;
249
250 if (!cdev || !cdev->client)
251 goto out;
252 if (!cdev->client->ops || !cdev->client->ops->vf_capable) {
253 dev_dbg(&pf->pdev->dev,
254 "Cannot locate client instance VF capability routine\n");
255 goto out;
256 }
257 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state))
258 goto out;
259
260 capable = cdev->client->ops->vf_capable(&cdev->lan_info,
261 cdev->client,
262 vf_id);
263out:
264 return capable;
265}
266
267void i40e_client_update_msix_info(struct i40e_pf *pf)
268{
269 struct i40e_client_instance *cdev = pf->cinst;
270
271 if (!cdev || !cdev->client)
272 return;
273
274 cdev->lan_info.msix_count = pf->num_iwarp_msix;
275 cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector];
276}
277
278/**
279 * i40e_client_add_instance - add a client instance struct to the instance list
280 * @pf: pointer to the board struct
281 * @client: pointer to a client struct in the client list.
282 * @existing: if there was already an existing instance
283 *
284 **/
285static void i40e_client_add_instance(struct i40e_pf *pf)
286{
287 struct i40e_client_instance *cdev = NULL;
288 struct netdev_hw_addr *mac = NULL;
289 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
290
291 if (!registered_client || pf->cinst)
292 return;
293
294 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
295 if (!cdev)
296 return;
297
298 cdev->lan_info.pf = (void *)pf;
299 cdev->lan_info.netdev = vsi->netdev;
300 cdev->lan_info.pcidev = pf->pdev;
301 cdev->lan_info.fid = pf->hw.pf_id;
302 cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF;
303 cdev->lan_info.hw_addr = pf->hw.hw_addr;
304 cdev->lan_info.ops = &i40e_lan_ops;
305 cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR;
306 cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR;
307 cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD;
308 cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver;
309 cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver;
310 cdev->lan_info.fw_build = pf->hw.aq.fw_build;
311 set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state);
312
313 if (i40e_client_get_params(vsi, &cdev->lan_info.params)) {
314 kfree(cdev);
315 cdev = NULL;
316 return;
317 }
318
319 mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list,
320 struct netdev_hw_addr, list);
321 if (mac)
322 ether_addr_copy(cdev->lan_info.lanmac, mac->addr);
323 else
324 dev_err(&pf->pdev->dev, "MAC address list is empty!\n");
325
326 cdev->client = registered_client;
327 pf->cinst = cdev;
328
329 i40e_client_update_msix_info(pf);
330}
331
332/**
333 * i40e_client_del_instance - removes a client instance from the list
334 * @pf: pointer to the board struct
335 *
336 **/
337static
338void i40e_client_del_instance(struct i40e_pf *pf)
339{
340 kfree(pf->cinst);
341 pf->cinst = NULL;
342}
343
344/**
345 * i40e_client_subtask - client maintenance work
346 * @pf: board private structure
347 **/
348void i40e_client_subtask(struct i40e_pf *pf)
349{
350 struct i40e_client *client = registered_client;
351 struct i40e_client_instance *cdev;
352 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
353 int ret = 0;
354
355 if (!test_and_clear_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state))
356 return;
357 cdev = pf->cinst;
358
359 /* If we're down or resetting, just bail */
360 if (test_bit(__I40E_DOWN, pf->state) ||
361 test_bit(__I40E_CONFIG_BUSY, pf->state))
362 return;
363
364 if (!client || !cdev)
365 return;
366
367 /* Here we handle client opens. If the client is down, and
368 * the netdev is registered, then open the client.
369 */
370 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
371 if (vsi->netdev_registered &&
372 client->ops && client->ops->open) {
373 set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
374 ret = client->ops->open(&cdev->lan_info, client);
375 if (ret) {
376 /* Remove failed client instance */
377 clear_bit(__I40E_CLIENT_INSTANCE_OPENED,
378 &cdev->state);
379 i40e_client_del_instance(pf);
380 }
381 }
382 }
383
384 /* enable/disable PE TCP_ENA flag based on netdev down/up
385 */
386 if (test_bit(__I40E_VSI_DOWN, vsi->state))
387 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
388 0, 0, 0,
389 I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
390 else
391 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
392 0, 0,
393 I40E_CLIENT_VSI_FLAG_TCP_ENABLE,
394 I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
395}
396
397/**
398 * i40e_lan_add_device - add a lan device struct to the list of lan devices
399 * @pf: pointer to the board struct
400 *
401 * Returns 0 on success or none 0 on error
402 **/
403int i40e_lan_add_device(struct i40e_pf *pf)
404{
405 struct i40e_device *ldev;
406 int ret = 0;
407
408 mutex_lock(&i40e_device_mutex);
409 list_for_each_entry(ldev, &i40e_devices, list) {
410 if (ldev->pf == pf) {
411 ret = -EEXIST;
412 goto out;
413 }
414 }
415 ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
416 if (!ldev) {
417 ret = -ENOMEM;
418 goto out;
419 }
420 ldev->pf = pf;
421 INIT_LIST_HEAD(&ldev->list);
422 list_add(&ldev->list, &i40e_devices);
423 dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
424 pf->hw.pf_id, pf->hw.bus.bus_id,
425 pf->hw.bus.device, pf->hw.bus.func);
426
427 /* If a client has already been registered, we need to add an instance
428 * of it to our new LAN device.
429 */
430 if (registered_client)
431 i40e_client_add_instance(pf);
432
433 /* Since in some cases register may have happened before a device gets
434 * added, we can schedule a subtask to go initiate the clients if
435 * they can be launched at probe time.
436 */
437 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
438 i40e_service_event_schedule(pf);
439
440out:
441 mutex_unlock(&i40e_device_mutex);
442 return ret;
443}
444
445/**
446 * i40e_lan_del_device - removes a lan device from the device list
447 * @pf: pointer to the board struct
448 *
449 * Returns 0 on success or non-0 on error
450 **/
451int i40e_lan_del_device(struct i40e_pf *pf)
452{
453 struct i40e_device *ldev, *tmp;
454 int ret = -ENODEV;
455
456 /* First, remove any client instance. */
457 i40e_client_del_instance(pf);
458
459 mutex_lock(&i40e_device_mutex);
460 list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
461 if (ldev->pf == pf) {
462 dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
463 pf->hw.pf_id, pf->hw.bus.bus_id,
464 pf->hw.bus.device, pf->hw.bus.func);
465 list_del(&ldev->list);
466 kfree(ldev);
467 ret = 0;
468 break;
469 }
470 }
471 mutex_unlock(&i40e_device_mutex);
472 return ret;
473}
474
475/**
476 * i40e_client_release - release client specific resources
477 * @client: pointer to the registered client
478 *
479 **/
480static void i40e_client_release(struct i40e_client *client)
481{
482 struct i40e_client_instance *cdev;
483 struct i40e_device *ldev;
484 struct i40e_pf *pf;
485
486 mutex_lock(&i40e_device_mutex);
487 list_for_each_entry(ldev, &i40e_devices, list) {
488 pf = ldev->pf;
489 cdev = pf->cinst;
490 if (!cdev)
491 continue;
492
493 while (test_and_set_bit(__I40E_SERVICE_SCHED,
494 pf->state))
495 usleep_range(500, 1000);
496
497 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
498 if (client->ops && client->ops->close)
499 client->ops->close(&cdev->lan_info, client,
500 false);
501 i40e_client_release_qvlist(&cdev->lan_info);
502 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
503
504 dev_warn(&pf->pdev->dev,
505 "Client %s instance for PF id %d closed\n",
506 client->name, pf->hw.pf_id);
507 }
508 /* delete the client instance */
509 i40e_client_del_instance(pf);
510 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n",
511 client->name);
512 clear_bit(__I40E_SERVICE_SCHED, pf->state);
513 }
514 mutex_unlock(&i40e_device_mutex);
515}
516
517/**
518 * i40e_client_prepare - prepare client specific resources
519 * @client: pointer to the registered client
520 *
521 **/
522static void i40e_client_prepare(struct i40e_client *client)
523{
524 struct i40e_device *ldev;
525 struct i40e_pf *pf;
526
527 mutex_lock(&i40e_device_mutex);
528 list_for_each_entry(ldev, &i40e_devices, list) {
529 pf = ldev->pf;
530 i40e_client_add_instance(pf);
531 /* Start the client subtask */
532 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
533 i40e_service_event_schedule(pf);
534 }
535 mutex_unlock(&i40e_device_mutex);
536}
537
538/**
539 * i40e_client_virtchnl_send - TBD
540 * @ldev: pointer to L2 context
541 * @client: Client pointer
542 * @vf_id: absolute VF identifier
543 * @msg: message buffer
544 * @len: length of message buffer
545 *
546 * Return 0 on success or < 0 on error
547 **/
548static int i40e_client_virtchnl_send(struct i40e_info *ldev,
549 struct i40e_client *client,
550 u32 vf_id, u8 *msg, u16 len)
551{
552 struct i40e_pf *pf = ldev->pf;
553 struct i40e_hw *hw = &pf->hw;
554 i40e_status err;
555
556 err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP,
557 0, msg, len, NULL);
558 if (err)
559 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
560 err, hw->aq.asq_last_status);
561
562 return err;
563}
564
565/**
566 * i40e_client_setup_qvlist
567 * @ldev: pointer to L2 context.
568 * @client: Client pointer.
569 * @qvlist_info: queue and vector list
570 *
571 * Return 0 on success or < 0 on error
572 **/
573static int i40e_client_setup_qvlist(struct i40e_info *ldev,
574 struct i40e_client *client,
575 struct i40e_qvlist_info *qvlist_info)
576{
577 struct i40e_pf *pf = ldev->pf;
578 struct i40e_hw *hw = &pf->hw;
579 struct i40e_qv_info *qv_info;
580 u32 v_idx, i, reg_idx, reg;
581
582 ldev->qvlist_info = kzalloc(struct_size(ldev->qvlist_info, qv_info,
583 qvlist_info->num_vectors - 1), GFP_KERNEL);
584 if (!ldev->qvlist_info)
585 return -ENOMEM;
586 ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
587
588 for (i = 0; i < qvlist_info->num_vectors; i++) {
589 qv_info = &qvlist_info->qv_info[i];
590 if (!qv_info)
591 continue;
592 v_idx = qv_info->v_idx;
593
594 /* Validate vector id belongs to this client */
595 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
596 (v_idx < pf->iwarp_base_vector))
597 goto err;
598
599 ldev->qvlist_info->qv_info[i] = *qv_info;
600 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
601
602 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
603 /* Special case - No CEQ mapped on this vector */
604 wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
605 } else {
606 reg = (qv_info->ceq_idx &
607 I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
608 (I40E_QUEUE_TYPE_PE_CEQ <<
609 I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
610 wr32(hw, reg_idx, reg);
611
612 reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
613 (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
614 (qv_info->itr_idx <<
615 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
616 (I40E_QUEUE_END_OF_LIST <<
617 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
618 wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
619 }
620 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
621 reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
622 (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
623 (qv_info->itr_idx <<
624 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
625
626 wr32(hw, I40E_PFINT_AEQCTL, reg);
627 }
628 }
629 /* Mitigate sync problems with iwarp VF driver */
630 i40e_flush(hw);
631 return 0;
632err:
633 kfree(ldev->qvlist_info);
634 ldev->qvlist_info = NULL;
635 return -EINVAL;
636}
637
638/**
639 * i40e_client_request_reset
640 * @ldev: pointer to L2 context.
641 * @client: Client pointer.
642 * @reset_level: reset level
643 **/
644static void i40e_client_request_reset(struct i40e_info *ldev,
645 struct i40e_client *client,
646 u32 reset_level)
647{
648 struct i40e_pf *pf = ldev->pf;
649
650 switch (reset_level) {
651 case I40E_CLIENT_RESET_LEVEL_PF:
652 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
653 break;
654 case I40E_CLIENT_RESET_LEVEL_CORE:
655 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
656 break;
657 default:
658 dev_warn(&pf->pdev->dev,
659 "Client for PF id %d requested an unsupported reset: %d.\n",
660 pf->hw.pf_id, reset_level);
661 break;
662 }
663
664 i40e_service_event_schedule(pf);
665}
666
667/**
668 * i40e_client_update_vsi_ctxt
669 * @ldev: pointer to L2 context.
670 * @client: Client pointer.
671 * @is_vf: if this for the VF
672 * @vf_id: if is_vf true this carries the vf_id
673 * @flag: Any device level setting that needs to be done for PE
674 * @valid_flag: Bits in this match up and enable changing of flag bits
675 *
676 * Return 0 on success or < 0 on error
677 **/
678static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
679 struct i40e_client *client,
680 bool is_vf, u32 vf_id,
681 u32 flag, u32 valid_flag)
682{
683 struct i40e_pf *pf = ldev->pf;
684 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
685 struct i40e_vsi_context ctxt;
686 bool update = true;
687 i40e_status err;
688
689 /* TODO: for now do not allow setting VF's VSI setting */
690 if (is_vf)
691 return -EINVAL;
692
693 ctxt.seid = pf->main_vsi_seid;
694 ctxt.pf_num = pf->hw.pf_id;
695 err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
696 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
697 if (err) {
698 dev_info(&pf->pdev->dev,
699 "couldn't get PF vsi config, err %s aq_err %s\n",
700 i40e_stat_str(&pf->hw, err),
701 i40e_aq_str(&pf->hw,
702 pf->hw.aq.asq_last_status));
703 return -ENOENT;
704 }
705
706 if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
707 (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
708 ctxt.info.valid_sections =
709 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
710 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
711 } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
712 !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
713 ctxt.info.valid_sections =
714 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
715 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
716 } else {
717 update = false;
718 dev_warn(&pf->pdev->dev,
719 "Client for PF id %d request an unsupported Config: %x.\n",
720 pf->hw.pf_id, flag);
721 }
722
723 if (update) {
724 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
725 if (err) {
726 dev_info(&pf->pdev->dev,
727 "update VSI ctxt for PE failed, err %s aq_err %s\n",
728 i40e_stat_str(&pf->hw, err),
729 i40e_aq_str(&pf->hw,
730 pf->hw.aq.asq_last_status));
731 }
732 }
733 return err;
734}
735
736/**
737 * i40e_register_client - Register a i40e client driver with the L2 driver
738 * @client: pointer to the i40e_client struct
739 *
740 * Returns 0 on success or non-0 on error
741 **/
742int i40e_register_client(struct i40e_client *client)
743{
744 int ret = 0;
745
746 if (!client) {
747 ret = -EIO;
748 goto out;
749 }
750
751 if (strlen(client->name) == 0) {
752 pr_info("i40e: Failed to register client with no name\n");
753 ret = -EIO;
754 goto out;
755 }
756
757 if (registered_client) {
758 pr_info("i40e: Client %s has already been registered!\n",
759 client->name);
760 ret = -EEXIST;
761 goto out;
762 }
763
764 if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) ||
765 (client->version.minor != I40E_CLIENT_VERSION_MINOR)) {
766 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n",
767 client->name);
768 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n",
769 client->version.major, client->version.minor,
770 client->version.build,
771 i40e_client_interface_version_str);
772 ret = -EIO;
773 goto out;
774 }
775
776 registered_client = client;
777
778 i40e_client_prepare(client);
779
780 pr_info("i40e: Registered client %s\n", client->name);
781out:
782 return ret;
783}
784EXPORT_SYMBOL(i40e_register_client);
785
786/**
787 * i40e_unregister_client - Unregister a i40e client driver with the L2 driver
788 * @client: pointer to the i40e_client struct
789 *
790 * Returns 0 on success or non-0 on error
791 **/
792int i40e_unregister_client(struct i40e_client *client)
793{
794 int ret = 0;
795
796 if (registered_client != client) {
797 pr_info("i40e: Client %s has not been registered\n",
798 client->name);
799 ret = -ENODEV;
800 goto out;
801 }
802 registered_client = NULL;
803 /* When a unregister request comes through we would have to send
804 * a close for each of the client instances that were opened.
805 * client_release function is called to handle this.
806 */
807 i40e_client_release(client);
808
809 pr_info("i40e: Unregistered client %s\n", client->name);
810out:
811 return ret;
812}
813EXPORT_SYMBOL(i40e_unregister_client);