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 #include "i40e_prototype.h"
10
11 static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR;
12 static struct i40e_client *registered_client;
13 static LIST_HEAD(i40e_devices);
14 static DEFINE_MUTEX(i40e_device_mutex);
15
16 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
17 struct i40e_client *client,
18 u32 vf_id, u8 *msg, u16 len);
19
20 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
21 struct i40e_client *client,
22 struct i40e_qvlist_info *qvlist_info);
23
24 static void i40e_client_request_reset(struct i40e_info *ldev,
25 struct i40e_client *client,
26 u32 reset_level);
27
28 static 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
33 static 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 **/
46 static
i40e_client_get_params(struct i40e_vsi * vsi,struct i40e_params * params)47 int 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 **/
83 void
i40e_notify_client_of_vf_msg(struct i40e_vsi * vsi,u32 vf_id,u8 * msg,u16 len)84 i40e_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 **/
i40e_notify_client_of_l2_param_changes(struct i40e_vsi * vsi)110 void 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 **/
i40e_client_release_qvlist(struct i40e_info * ldev)139 static 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 **/
i40e_notify_client_of_netdev_close(struct i40e_vsi * vsi,bool reset)169 void 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 **/
i40e_notify_client_of_vf_reset(struct i40e_pf * pf,u32 vf_id)193 void 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 **/
i40e_notify_client_of_vf_enable(struct i40e_pf * pf,u32 num_vfs)218 void 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 **/
i40e_vf_client_capable(struct i40e_pf * pf,u32 vf_id)245 int 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);
263 out:
264 return capable;
265 }
266
i40e_client_update_msix_info(struct i40e_pf * pf)267 void 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 *
282 **/
i40e_client_add_instance(struct i40e_pf * pf)283 static void i40e_client_add_instance(struct i40e_pf *pf)
284 {
285 struct i40e_client_instance *cdev = NULL;
286 struct netdev_hw_addr *mac = NULL;
287 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
288
289 if (!registered_client || pf->cinst)
290 return;
291
292 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
293 if (!cdev)
294 return;
295
296 cdev->lan_info.pf = (void *)pf;
297 cdev->lan_info.netdev = vsi->netdev;
298 cdev->lan_info.pcidev = pf->pdev;
299 cdev->lan_info.fid = pf->hw.pf_id;
300 cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF;
301 cdev->lan_info.hw_addr = pf->hw.hw_addr;
302 cdev->lan_info.ops = &i40e_lan_ops;
303 cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR;
304 cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR;
305 cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD;
306 cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver;
307 cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver;
308 cdev->lan_info.fw_build = pf->hw.aq.fw_build;
309 set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state);
310
311 if (i40e_client_get_params(vsi, &cdev->lan_info.params)) {
312 kfree(cdev);
313 cdev = NULL;
314 return;
315 }
316
317 mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list,
318 struct netdev_hw_addr, list);
319 if (mac)
320 ether_addr_copy(cdev->lan_info.lanmac, mac->addr);
321 else
322 dev_err(&pf->pdev->dev, "MAC address list is empty!\n");
323
324 cdev->client = registered_client;
325 pf->cinst = cdev;
326
327 i40e_client_update_msix_info(pf);
328 }
329
330 /**
331 * i40e_client_del_instance - removes a client instance from the list
332 * @pf: pointer to the board struct
333 *
334 **/
335 static
i40e_client_del_instance(struct i40e_pf * pf)336 void i40e_client_del_instance(struct i40e_pf *pf)
337 {
338 kfree(pf->cinst);
339 pf->cinst = NULL;
340 }
341
342 /**
343 * i40e_client_subtask - client maintenance work
344 * @pf: board private structure
345 **/
i40e_client_subtask(struct i40e_pf * pf)346 void i40e_client_subtask(struct i40e_pf *pf)
347 {
348 struct i40e_client *client = registered_client;
349 struct i40e_client_instance *cdev;
350 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
351 int ret = 0;
352
353 if (!test_and_clear_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state))
354 return;
355 cdev = pf->cinst;
356
357 /* If we're down or resetting, just bail */
358 if (test_bit(__I40E_DOWN, pf->state) ||
359 test_bit(__I40E_CONFIG_BUSY, pf->state))
360 return;
361
362 if (!client || !cdev)
363 return;
364
365 /* Here we handle client opens. If the client is down, and
366 * the netdev is registered, then open the client.
367 */
368 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
369 if (vsi->netdev_registered &&
370 client->ops && client->ops->open) {
371 set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
372 ret = client->ops->open(&cdev->lan_info, client);
373 if (ret) {
374 /* Remove failed client instance */
375 clear_bit(__I40E_CLIENT_INSTANCE_OPENED,
376 &cdev->state);
377 i40e_client_del_instance(pf);
378 }
379 }
380 }
381
382 /* enable/disable PE TCP_ENA flag based on netdev down/up
383 */
384 if (test_bit(__I40E_VSI_DOWN, vsi->state))
385 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
386 0, 0, 0,
387 I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
388 else
389 i40e_client_update_vsi_ctxt(&cdev->lan_info, client,
390 0, 0,
391 I40E_CLIENT_VSI_FLAG_TCP_ENABLE,
392 I40E_CLIENT_VSI_FLAG_TCP_ENABLE);
393 }
394
395 /**
396 * i40e_lan_add_device - add a lan device struct to the list of lan devices
397 * @pf: pointer to the board struct
398 *
399 * Returns 0 on success or none 0 on error
400 **/
i40e_lan_add_device(struct i40e_pf * pf)401 int i40e_lan_add_device(struct i40e_pf *pf)
402 {
403 struct i40e_device *ldev;
404 int ret = 0;
405
406 mutex_lock(&i40e_device_mutex);
407 list_for_each_entry(ldev, &i40e_devices, list) {
408 if (ldev->pf == pf) {
409 ret = -EEXIST;
410 goto out;
411 }
412 }
413 ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
414 if (!ldev) {
415 ret = -ENOMEM;
416 goto out;
417 }
418 ldev->pf = pf;
419 INIT_LIST_HEAD(&ldev->list);
420 list_add(&ldev->list, &i40e_devices);
421 dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
422 pf->hw.pf_id, pf->hw.bus.bus_id,
423 pf->hw.bus.device, pf->hw.bus.func);
424
425 /* If a client has already been registered, we need to add an instance
426 * of it to our new LAN device.
427 */
428 if (registered_client)
429 i40e_client_add_instance(pf);
430
431 /* Since in some cases register may have happened before a device gets
432 * added, we can schedule a subtask to go initiate the clients if
433 * they can be launched at probe time.
434 */
435 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
436 i40e_service_event_schedule(pf);
437
438 out:
439 mutex_unlock(&i40e_device_mutex);
440 return ret;
441 }
442
443 /**
444 * i40e_lan_del_device - removes a lan device from the device list
445 * @pf: pointer to the board struct
446 *
447 * Returns 0 on success or non-0 on error
448 **/
i40e_lan_del_device(struct i40e_pf * pf)449 int i40e_lan_del_device(struct i40e_pf *pf)
450 {
451 struct i40e_device *ldev, *tmp;
452 int ret = -ENODEV;
453
454 /* First, remove any client instance. */
455 i40e_client_del_instance(pf);
456
457 mutex_lock(&i40e_device_mutex);
458 list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
459 if (ldev->pf == pf) {
460 dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x dev=0x%02x func=0x%02x\n",
461 pf->hw.pf_id, pf->hw.bus.bus_id,
462 pf->hw.bus.device, pf->hw.bus.func);
463 list_del(&ldev->list);
464 kfree(ldev);
465 ret = 0;
466 break;
467 }
468 }
469 mutex_unlock(&i40e_device_mutex);
470 return ret;
471 }
472
473 /**
474 * i40e_client_release - release client specific resources
475 * @client: pointer to the registered client
476 *
477 **/
i40e_client_release(struct i40e_client * client)478 static void i40e_client_release(struct i40e_client *client)
479 {
480 struct i40e_client_instance *cdev;
481 struct i40e_device *ldev;
482 struct i40e_pf *pf;
483
484 mutex_lock(&i40e_device_mutex);
485 list_for_each_entry(ldev, &i40e_devices, list) {
486 pf = ldev->pf;
487 cdev = pf->cinst;
488 if (!cdev)
489 continue;
490
491 while (test_and_set_bit(__I40E_SERVICE_SCHED,
492 pf->state))
493 usleep_range(500, 1000);
494
495 if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
496 if (client->ops && client->ops->close)
497 client->ops->close(&cdev->lan_info, client,
498 false);
499 i40e_client_release_qvlist(&cdev->lan_info);
500 clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
501
502 dev_warn(&pf->pdev->dev,
503 "Client %s instance for PF id %d closed\n",
504 client->name, pf->hw.pf_id);
505 }
506 /* delete the client instance */
507 i40e_client_del_instance(pf);
508 dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n",
509 client->name);
510 clear_bit(__I40E_SERVICE_SCHED, pf->state);
511 }
512 mutex_unlock(&i40e_device_mutex);
513 }
514
515 /**
516 * i40e_client_prepare - prepare client specific resources
517 * @client: pointer to the registered client
518 *
519 **/
i40e_client_prepare(struct i40e_client * client)520 static void i40e_client_prepare(struct i40e_client *client)
521 {
522 struct i40e_device *ldev;
523 struct i40e_pf *pf;
524
525 mutex_lock(&i40e_device_mutex);
526 list_for_each_entry(ldev, &i40e_devices, list) {
527 pf = ldev->pf;
528 i40e_client_add_instance(pf);
529 /* Start the client subtask */
530 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
531 i40e_service_event_schedule(pf);
532 }
533 mutex_unlock(&i40e_device_mutex);
534 }
535
536 /**
537 * i40e_client_virtchnl_send - TBD
538 * @ldev: pointer to L2 context
539 * @client: Client pointer
540 * @vf_id: absolute VF identifier
541 * @msg: message buffer
542 * @len: length of message buffer
543 *
544 * Return 0 on success or < 0 on error
545 **/
i40e_client_virtchnl_send(struct i40e_info * ldev,struct i40e_client * client,u32 vf_id,u8 * msg,u16 len)546 static int i40e_client_virtchnl_send(struct i40e_info *ldev,
547 struct i40e_client *client,
548 u32 vf_id, u8 *msg, u16 len)
549 {
550 struct i40e_pf *pf = ldev->pf;
551 struct i40e_hw *hw = &pf->hw;
552 i40e_status err;
553
554 err = i40e_aq_send_msg_to_vf(hw, vf_id, VIRTCHNL_OP_IWARP,
555 0, msg, len, NULL);
556 if (err)
557 dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
558 err, hw->aq.asq_last_status);
559
560 return err;
561 }
562
563 /**
564 * i40e_client_setup_qvlist
565 * @ldev: pointer to L2 context.
566 * @client: Client pointer.
567 * @qvlist_info: queue and vector list
568 *
569 * Return 0 on success or < 0 on error
570 **/
i40e_client_setup_qvlist(struct i40e_info * ldev,struct i40e_client * client,struct i40e_qvlist_info * qvlist_info)571 static int i40e_client_setup_qvlist(struct i40e_info *ldev,
572 struct i40e_client *client,
573 struct i40e_qvlist_info *qvlist_info)
574 {
575 struct i40e_pf *pf = ldev->pf;
576 struct i40e_hw *hw = &pf->hw;
577 struct i40e_qv_info *qv_info;
578 u32 v_idx, i, reg_idx, reg;
579
580 ldev->qvlist_info = kzalloc(struct_size(ldev->qvlist_info, qv_info,
581 qvlist_info->num_vectors - 1), GFP_KERNEL);
582 if (!ldev->qvlist_info)
583 return -ENOMEM;
584 ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
585
586 for (i = 0; i < qvlist_info->num_vectors; i++) {
587 qv_info = &qvlist_info->qv_info[i];
588 if (!qv_info)
589 continue;
590 v_idx = qv_info->v_idx;
591
592 /* Validate vector id belongs to this client */
593 if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
594 (v_idx < pf->iwarp_base_vector))
595 goto err;
596
597 ldev->qvlist_info->qv_info[i] = *qv_info;
598 reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
599
600 if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
601 /* Special case - No CEQ mapped on this vector */
602 wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
603 } else {
604 reg = (qv_info->ceq_idx &
605 I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
606 (I40E_QUEUE_TYPE_PE_CEQ <<
607 I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
608 wr32(hw, reg_idx, reg);
609
610 reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
611 (v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
612 (qv_info->itr_idx <<
613 I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
614 (I40E_QUEUE_END_OF_LIST <<
615 I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
616 wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
617 }
618 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
619 reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
620 (v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
621 (qv_info->itr_idx <<
622 I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
623
624 wr32(hw, I40E_PFINT_AEQCTL, reg);
625 }
626 }
627 /* Mitigate sync problems with iwarp VF driver */
628 i40e_flush(hw);
629 return 0;
630 err:
631 kfree(ldev->qvlist_info);
632 ldev->qvlist_info = NULL;
633 return -EINVAL;
634 }
635
636 /**
637 * i40e_client_request_reset
638 * @ldev: pointer to L2 context.
639 * @client: Client pointer.
640 * @reset_level: reset level
641 **/
i40e_client_request_reset(struct i40e_info * ldev,struct i40e_client * client,u32 reset_level)642 static void i40e_client_request_reset(struct i40e_info *ldev,
643 struct i40e_client *client,
644 u32 reset_level)
645 {
646 struct i40e_pf *pf = ldev->pf;
647
648 switch (reset_level) {
649 case I40E_CLIENT_RESET_LEVEL_PF:
650 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
651 break;
652 case I40E_CLIENT_RESET_LEVEL_CORE:
653 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
654 break;
655 default:
656 dev_warn(&pf->pdev->dev,
657 "Client for PF id %d requested an unsupported reset: %d.\n",
658 pf->hw.pf_id, reset_level);
659 break;
660 }
661
662 i40e_service_event_schedule(pf);
663 }
664
665 /**
666 * i40e_client_update_vsi_ctxt
667 * @ldev: pointer to L2 context.
668 * @client: Client pointer.
669 * @is_vf: if this for the VF
670 * @vf_id: if is_vf true this carries the vf_id
671 * @flag: Any device level setting that needs to be done for PE
672 * @valid_flag: Bits in this match up and enable changing of flag bits
673 *
674 * Return 0 on success or < 0 on error
675 **/
i40e_client_update_vsi_ctxt(struct i40e_info * ldev,struct i40e_client * client,bool is_vf,u32 vf_id,u32 flag,u32 valid_flag)676 static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
677 struct i40e_client *client,
678 bool is_vf, u32 vf_id,
679 u32 flag, u32 valid_flag)
680 {
681 struct i40e_pf *pf = ldev->pf;
682 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
683 struct i40e_vsi_context ctxt;
684 bool update = true;
685 i40e_status err;
686
687 /* TODO: for now do not allow setting VF's VSI setting */
688 if (is_vf)
689 return -EINVAL;
690
691 ctxt.seid = pf->main_vsi_seid;
692 ctxt.pf_num = pf->hw.pf_id;
693 err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
694 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
695 if (err) {
696 dev_info(&pf->pdev->dev,
697 "couldn't get PF vsi config, err %s aq_err %s\n",
698 i40e_stat_str(&pf->hw, err),
699 i40e_aq_str(&pf->hw,
700 pf->hw.aq.asq_last_status));
701 return -ENOENT;
702 }
703
704 if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
705 (flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
706 ctxt.info.valid_sections =
707 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
708 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
709 } else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE) &&
710 !(flag & I40E_CLIENT_VSI_FLAG_TCP_ENABLE)) {
711 ctxt.info.valid_sections =
712 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
713 ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
714 } else {
715 update = false;
716 dev_warn(&pf->pdev->dev,
717 "Client for PF id %d request an unsupported Config: %x.\n",
718 pf->hw.pf_id, flag);
719 }
720
721 if (update) {
722 err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
723 if (err) {
724 dev_info(&pf->pdev->dev,
725 "update VSI ctxt for PE failed, err %s aq_err %s\n",
726 i40e_stat_str(&pf->hw, err),
727 i40e_aq_str(&pf->hw,
728 pf->hw.aq.asq_last_status));
729 }
730 }
731 return err;
732 }
733
734 /**
735 * i40e_register_client - Register a i40e client driver with the L2 driver
736 * @client: pointer to the i40e_client struct
737 *
738 * Returns 0 on success or non-0 on error
739 **/
i40e_register_client(struct i40e_client * client)740 int i40e_register_client(struct i40e_client *client)
741 {
742 int ret = 0;
743
744 if (!client) {
745 ret = -EIO;
746 goto out;
747 }
748
749 if (strlen(client->name) == 0) {
750 pr_info("i40e: Failed to register client with no name\n");
751 ret = -EIO;
752 goto out;
753 }
754
755 if (registered_client) {
756 pr_info("i40e: Client %s has already been registered!\n",
757 client->name);
758 ret = -EEXIST;
759 goto out;
760 }
761
762 if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) ||
763 (client->version.minor != I40E_CLIENT_VERSION_MINOR)) {
764 pr_info("i40e: Failed to register client %s due to mismatched client interface version\n",
765 client->name);
766 pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n",
767 client->version.major, client->version.minor,
768 client->version.build,
769 i40e_client_interface_version_str);
770 ret = -EIO;
771 goto out;
772 }
773
774 registered_client = client;
775
776 i40e_client_prepare(client);
777
778 pr_info("i40e: Registered client %s\n", client->name);
779 out:
780 return ret;
781 }
782 EXPORT_SYMBOL(i40e_register_client);
783
784 /**
785 * i40e_unregister_client - Unregister a i40e client driver with the L2 driver
786 * @client: pointer to the i40e_client struct
787 *
788 * Returns 0 on success or non-0 on error
789 **/
i40e_unregister_client(struct i40e_client * client)790 int i40e_unregister_client(struct i40e_client *client)
791 {
792 int ret = 0;
793
794 if (registered_client != client) {
795 pr_info("i40e: Client %s has not been registered\n",
796 client->name);
797 ret = -ENODEV;
798 goto out;
799 }
800 registered_client = NULL;
801 /* When a unregister request comes through we would have to send
802 * a close for each of the client instances that were opened.
803 * client_release function is called to handle this.
804 */
805 i40e_client_release(client);
806
807 pr_info("i40e: Unregistered client %s\n", client->name);
808 out:
809 return ret;
810 }
811 EXPORT_SYMBOL(i40e_unregister_client);
812
