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1/*******************************************************************************
2*
3* Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
4*
5* This software is available to you under a choice of one of two
6* licenses. You may choose to be licensed under the terms of the GNU
7* General Public License (GPL) Version 2, available from the file
8* COPYING in the main directory of this source tree, or the
9* OpenFabrics.org BSD license below:
10*
11* Redistribution and use in source and binary forms, with or
12* without modification, are permitted provided that the following
13* conditions are met:
14*
15* - Redistributions of source code must retain the above
16* copyright notice, this list of conditions and the following
17* disclaimer.
18*
19* - Redistributions in binary form must reproduce the above
20* copyright notice, this list of conditions and the following
21* disclaimer in the documentation and/or other materials
22* provided with the distribution.
23*
24* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31* SOFTWARE.
32*
33*******************************************************************************/
34
35#include <linux/module.h>
36#include <linux/moduleparam.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
39#include <linux/ip.h>
40#include <linux/tcp.h>
41#include <linux/if_vlan.h>
42#include <net/addrconf.h>
43
44#include "i40iw.h"
45#include "i40iw_register.h"
46#include <net/netevent.h>
47#define CLIENT_IW_INTERFACE_VERSION_MAJOR 0
48#define CLIENT_IW_INTERFACE_VERSION_MINOR 01
49#define CLIENT_IW_INTERFACE_VERSION_BUILD 00
50
51#define DRV_VERSION_MAJOR 0
52#define DRV_VERSION_MINOR 5
53#define DRV_VERSION_BUILD 123
54#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
55 __stringify(DRV_VERSION_MINOR) "." __stringify(DRV_VERSION_BUILD)
56
57static int push_mode;
58module_param(push_mode, int, 0644);
59MODULE_PARM_DESC(push_mode, "Low latency mode: 0=disabled (default), 1=enabled)");
60
61static int debug;
62module_param(debug, int, 0644);
63MODULE_PARM_DESC(debug, "debug flags: 0=disabled (default), 0x7fffffff=all");
64
65static int resource_profile;
66module_param(resource_profile, int, 0644);
67MODULE_PARM_DESC(resource_profile,
68 "Resource Profile: 0=no VF RDMA support (default), 1=Weighted VF, 2=Even Distribution");
69
70static int max_rdma_vfs = 32;
71module_param(max_rdma_vfs, int, 0644);
72MODULE_PARM_DESC(max_rdma_vfs, "Maximum VF count: 0-32 32=default");
73static int mpa_version = 2;
74module_param(mpa_version, int, 0644);
75MODULE_PARM_DESC(mpa_version, "MPA version to be used in MPA Req/Resp 1 or 2");
76
77MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
78MODULE_DESCRIPTION("Intel(R) Ethernet Connection X722 iWARP RDMA Driver");
79MODULE_LICENSE("Dual BSD/GPL");
80
81static struct i40e_client i40iw_client;
82static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw";
83
84static LIST_HEAD(i40iw_handlers);
85static spinlock_t i40iw_handler_lock;
86
87static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
88 u32 vf_id, u8 *msg, u16 len);
89
90static struct notifier_block i40iw_inetaddr_notifier = {
91 .notifier_call = i40iw_inetaddr_event
92};
93
94static struct notifier_block i40iw_inetaddr6_notifier = {
95 .notifier_call = i40iw_inet6addr_event
96};
97
98static struct notifier_block i40iw_net_notifier = {
99 .notifier_call = i40iw_net_event
100};
101
102static struct notifier_block i40iw_netdevice_notifier = {
103 .notifier_call = i40iw_netdevice_event
104};
105
106/**
107 * i40iw_find_i40e_handler - find a handler given a client info
108 * @ldev: pointer to a client info
109 */
110static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev)
111{
112 struct i40iw_handler *hdl;
113 unsigned long flags;
114
115 spin_lock_irqsave(&i40iw_handler_lock, flags);
116 list_for_each_entry(hdl, &i40iw_handlers, list) {
117 if (hdl->ldev.netdev == ldev->netdev) {
118 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
119 return hdl;
120 }
121 }
122 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
123 return NULL;
124}
125
126/**
127 * i40iw_find_netdev - find a handler given a netdev
128 * @netdev: pointer to net_device
129 */
130struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev)
131{
132 struct i40iw_handler *hdl;
133 unsigned long flags;
134
135 spin_lock_irqsave(&i40iw_handler_lock, flags);
136 list_for_each_entry(hdl, &i40iw_handlers, list) {
137 if (hdl->ldev.netdev == netdev) {
138 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
139 return hdl;
140 }
141 }
142 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
143 return NULL;
144}
145
146/**
147 * i40iw_add_handler - add a handler to the list
148 * @hdl: handler to be added to the handler list
149 */
150static void i40iw_add_handler(struct i40iw_handler *hdl)
151{
152 unsigned long flags;
153
154 spin_lock_irqsave(&i40iw_handler_lock, flags);
155 list_add(&hdl->list, &i40iw_handlers);
156 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
157}
158
159/**
160 * i40iw_del_handler - delete a handler from the list
161 * @hdl: handler to be deleted from the handler list
162 */
163static int i40iw_del_handler(struct i40iw_handler *hdl)
164{
165 unsigned long flags;
166
167 spin_lock_irqsave(&i40iw_handler_lock, flags);
168 list_del(&hdl->list);
169 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
170 return 0;
171}
172
173/**
174 * i40iw_enable_intr - set up device interrupts
175 * @dev: hardware control device structure
176 * @msix_id: id of the interrupt to be enabled
177 */
178static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id)
179{
180 u32 val;
181
182 val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
183 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
184 (3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
185 if (dev->is_pf)
186 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val);
187 else
188 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val);
189}
190
191/**
192 * i40iw_dpc - tasklet for aeq and ceq 0
193 * @data: iwarp device
194 */
195static void i40iw_dpc(unsigned long data)
196{
197 struct i40iw_device *iwdev = (struct i40iw_device *)data;
198
199 if (iwdev->msix_shared)
200 i40iw_process_ceq(iwdev, iwdev->ceqlist);
201 i40iw_process_aeq(iwdev);
202 i40iw_enable_intr(&iwdev->sc_dev, iwdev->iw_msixtbl[0].idx);
203}
204
205/**
206 * i40iw_ceq_dpc - dpc handler for CEQ
207 * @data: data points to CEQ
208 */
209static void i40iw_ceq_dpc(unsigned long data)
210{
211 struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
212 struct i40iw_device *iwdev = iwceq->iwdev;
213
214 i40iw_process_ceq(iwdev, iwceq);
215 i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx);
216}
217
218/**
219 * i40iw_irq_handler - interrupt handler for aeq and ceq0
220 * @irq: Interrupt request number
221 * @data: iwarp device
222 */
223static irqreturn_t i40iw_irq_handler(int irq, void *data)
224{
225 struct i40iw_device *iwdev = (struct i40iw_device *)data;
226
227 tasklet_schedule(&iwdev->dpc_tasklet);
228 return IRQ_HANDLED;
229}
230
231/**
232 * i40iw_destroy_cqp - destroy control qp
233 * @iwdev: iwarp device
234 * @create_done: 1 if cqp create poll was success
235 *
236 * Issue destroy cqp request and
237 * free the resources associated with the cqp
238 */
239static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp)
240{
241 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
242 struct i40iw_cqp *cqp = &iwdev->cqp;
243
244 if (free_hwcqp)
245 dev->cqp_ops->cqp_destroy(dev->cqp);
246
247 i40iw_cleanup_pending_cqp_op(iwdev);
248
249 i40iw_free_dma_mem(dev->hw, &cqp->sq);
250 kfree(cqp->scratch_array);
251 iwdev->cqp.scratch_array = NULL;
252
253 kfree(cqp->cqp_requests);
254 cqp->cqp_requests = NULL;
255}
256
257/**
258 * i40iw_disable_irqs - disable device interrupts
259 * @dev: hardware control device structure
260 * @msic_vec: msix vector to disable irq
261 * @dev_id: parameter to pass to free_irq (used during irq setup)
262 *
263 * The function is called when destroying aeq/ceq
264 */
265static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
266 struct i40iw_msix_vector *msix_vec,
267 void *dev_id)
268{
269 if (dev->is_pf)
270 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
271 else
272 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0);
273 irq_set_affinity_hint(msix_vec->irq, NULL);
274 free_irq(msix_vec->irq, dev_id);
275}
276
277/**
278 * i40iw_destroy_aeq - destroy aeq
279 * @iwdev: iwarp device
280 *
281 * Issue a destroy aeq request and
282 * free the resources associated with the aeq
283 * The function is called during driver unload
284 */
285static void i40iw_destroy_aeq(struct i40iw_device *iwdev)
286{
287 enum i40iw_status_code status = I40IW_ERR_NOT_READY;
288 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
289 struct i40iw_aeq *aeq = &iwdev->aeq;
290
291 if (!iwdev->msix_shared)
292 i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev);
293 if (iwdev->reset)
294 goto exit;
295
296 if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1))
297 status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq);
298 if (status)
299 i40iw_pr_err("destroy aeq failed %d\n", status);
300
301exit:
302 i40iw_free_dma_mem(dev->hw, &aeq->mem);
303}
304
305/**
306 * i40iw_destroy_ceq - destroy ceq
307 * @iwdev: iwarp device
308 * @iwceq: ceq to be destroyed
309 *
310 * Issue a destroy ceq request and
311 * free the resources associated with the ceq
312 */
313static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
314 struct i40iw_ceq *iwceq)
315{
316 enum i40iw_status_code status;
317 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
318
319 if (iwdev->reset)
320 goto exit;
321
322 status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1);
323 if (status) {
324 i40iw_pr_err("ceq destroy command failed %d\n", status);
325 goto exit;
326 }
327
328 status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq);
329 if (status)
330 i40iw_pr_err("ceq destroy completion failed %d\n", status);
331exit:
332 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
333}
334
335/**
336 * i40iw_dele_ceqs - destroy all ceq's
337 * @iwdev: iwarp device
338 *
339 * Go through all of the device ceq's and for each ceq
340 * disable the ceq interrupt and destroy the ceq
341 */
342static void i40iw_dele_ceqs(struct i40iw_device *iwdev)
343{
344 u32 i = 0;
345 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
346 struct i40iw_ceq *iwceq = iwdev->ceqlist;
347 struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
348
349 if (iwdev->msix_shared) {
350 i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
351 i40iw_destroy_ceq(iwdev, iwceq);
352 iwceq++;
353 i++;
354 }
355
356 for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) {
357 i40iw_disable_irq(dev, msix_vec, (void *)iwceq);
358 i40iw_destroy_ceq(iwdev, iwceq);
359 }
360
361 iwdev->sc_dev.ceq_valid = false;
362}
363
364/**
365 * i40iw_destroy_ccq - destroy control cq
366 * @iwdev: iwarp device
367 *
368 * Issue destroy ccq request and
369 * free the resources associated with the ccq
370 */
371static void i40iw_destroy_ccq(struct i40iw_device *iwdev)
372{
373 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
374 struct i40iw_ccq *ccq = &iwdev->ccq;
375 enum i40iw_status_code status = 0;
376
377 if (!iwdev->reset)
378 status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true);
379 if (status)
380 i40iw_pr_err("ccq destroy failed %d\n", status);
381 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
382}
383
384/* types of hmc objects */
385static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = {
386 I40IW_HMC_IW_QP,
387 I40IW_HMC_IW_CQ,
388 I40IW_HMC_IW_HTE,
389 I40IW_HMC_IW_ARP,
390 I40IW_HMC_IW_APBVT_ENTRY,
391 I40IW_HMC_IW_MR,
392 I40IW_HMC_IW_XF,
393 I40IW_HMC_IW_XFFL,
394 I40IW_HMC_IW_Q1,
395 I40IW_HMC_IW_Q1FL,
396 I40IW_HMC_IW_TIMER,
397};
398
399/**
400 * i40iw_close_hmc_objects_type - delete hmc objects of a given type
401 * @iwdev: iwarp device
402 * @obj_type: the hmc object type to be deleted
403 * @is_pf: true if the function is PF otherwise false
404 * @reset: true if called before reset
405 */
406static void i40iw_close_hmc_objects_type(struct i40iw_sc_dev *dev,
407 enum i40iw_hmc_rsrc_type obj_type,
408 struct i40iw_hmc_info *hmc_info,
409 bool is_pf,
410 bool reset)
411{
412 struct i40iw_hmc_del_obj_info info;
413
414 memset(&info, 0, sizeof(info));
415 info.hmc_info = hmc_info;
416 info.rsrc_type = obj_type;
417 info.count = hmc_info->hmc_obj[obj_type].cnt;
418 info.is_pf = is_pf;
419 if (dev->hmc_ops->del_hmc_object(dev, &info, reset))
420 i40iw_pr_err("del obj of type %d failed\n", obj_type);
421}
422
423/**
424 * i40iw_del_hmc_objects - remove all device hmc objects
425 * @dev: iwarp device
426 * @hmc_info: hmc_info to free
427 * @is_pf: true if hmc_info belongs to PF, not vf nor allocated
428 * by PF on behalf of VF
429 * @reset: true if called before reset
430 */
431static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev,
432 struct i40iw_hmc_info *hmc_info,
433 bool is_pf,
434 bool reset)
435{
436 unsigned int i;
437
438 for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++)
439 i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], hmc_info, is_pf, reset);
440}
441
442/**
443 * i40iw_ceq_handler - interrupt handler for ceq
444 * @data: ceq pointer
445 */
446static irqreturn_t i40iw_ceq_handler(int irq, void *data)
447{
448 struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
449
450 if (iwceq->irq != irq)
451 i40iw_pr_err("expected irq = %d received irq = %d\n", iwceq->irq, irq);
452 tasklet_schedule(&iwceq->dpc_tasklet);
453 return IRQ_HANDLED;
454}
455
456/**
457 * i40iw_create_hmc_obj_type - create hmc object of a given type
458 * @dev: hardware control device structure
459 * @info: information for the hmc object to create
460 */
461static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev,
462 struct i40iw_hmc_create_obj_info *info)
463{
464 return dev->hmc_ops->create_hmc_object(dev, info);
465}
466
467/**
468 * i40iw_create_hmc_objs - create all hmc objects for the device
469 * @iwdev: iwarp device
470 * @is_pf: true if the function is PF otherwise false
471 *
472 * Create the device hmc objects and allocate hmc pages
473 * Return 0 if successful, otherwise clean up and return error
474 */
475static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev,
476 bool is_pf)
477{
478 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
479 struct i40iw_hmc_create_obj_info info;
480 enum i40iw_status_code status;
481 int i;
482
483 memset(&info, 0, sizeof(info));
484 info.hmc_info = dev->hmc_info;
485 info.is_pf = is_pf;
486 info.entry_type = iwdev->sd_type;
487 for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) {
488 info.rsrc_type = iw_hmc_obj_types[i];
489 info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt;
490 info.add_sd_cnt = 0;
491 status = i40iw_create_hmc_obj_type(dev, &info);
492 if (status) {
493 i40iw_pr_err("create obj type %d status = %d\n",
494 iw_hmc_obj_types[i], status);
495 break;
496 }
497 }
498 if (!status)
499 return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
500 dev->hmc_fn_id,
501 true, true));
502
503 while (i) {
504 i--;
505 /* destroy the hmc objects of a given type */
506 i40iw_close_hmc_objects_type(dev,
507 iw_hmc_obj_types[i],
508 dev->hmc_info,
509 is_pf,
510 false);
511 }
512 return status;
513}
514
515/**
516 * i40iw_obj_aligned_mem - get aligned memory from device allocated memory
517 * @iwdev: iwarp device
518 * @memptr: points to the memory addresses
519 * @size: size of memory needed
520 * @mask: mask for the aligned memory
521 *
522 * Get aligned memory of the requested size and
523 * update the memptr to point to the new aligned memory
524 * Return 0 if successful, otherwise return no memory error
525 */
526enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
527 struct i40iw_dma_mem *memptr,
528 u32 size,
529 u32 mask)
530{
531 unsigned long va, newva;
532 unsigned long extra;
533
534 va = (unsigned long)iwdev->obj_next.va;
535 newva = va;
536 if (mask)
537 newva = ALIGN(va, (mask + 1));
538 extra = newva - va;
539 memptr->va = (u8 *)va + extra;
540 memptr->pa = iwdev->obj_next.pa + extra;
541 memptr->size = size;
542 if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
543 return I40IW_ERR_NO_MEMORY;
544
545 iwdev->obj_next.va = memptr->va + size;
546 iwdev->obj_next.pa = memptr->pa + size;
547 return 0;
548}
549
550/**
551 * i40iw_create_cqp - create control qp
552 * @iwdev: iwarp device
553 *
554 * Return 0, if the cqp and all the resources associated with it
555 * are successfully created, otherwise return error
556 */
557static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
558{
559 enum i40iw_status_code status;
560 u32 sqsize = I40IW_CQP_SW_SQSIZE_2048;
561 struct i40iw_dma_mem mem;
562 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
563 struct i40iw_cqp_init_info cqp_init_info;
564 struct i40iw_cqp *cqp = &iwdev->cqp;
565 u16 maj_err, min_err;
566 int i;
567
568 cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL);
569 if (!cqp->cqp_requests)
570 return I40IW_ERR_NO_MEMORY;
571 cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL);
572 if (!cqp->scratch_array) {
573 kfree(cqp->cqp_requests);
574 return I40IW_ERR_NO_MEMORY;
575 }
576 dev->cqp = &cqp->sc_cqp;
577 dev->cqp->dev = dev;
578 memset(&cqp_init_info, 0, sizeof(cqp_init_info));
579 status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq,
580 (sizeof(struct i40iw_cqp_sq_wqe) * sqsize),
581 I40IW_CQP_ALIGNMENT);
582 if (status)
583 goto exit;
584 status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
585 I40IW_HOST_CTX_ALIGNMENT_MASK);
586 if (status)
587 goto exit;
588 dev->cqp->host_ctx_pa = mem.pa;
589 dev->cqp->host_ctx = mem.va;
590 /* populate the cqp init info */
591 cqp_init_info.dev = dev;
592 cqp_init_info.sq_size = sqsize;
593 cqp_init_info.sq = cqp->sq.va;
594 cqp_init_info.sq_pa = cqp->sq.pa;
595 cqp_init_info.host_ctx_pa = mem.pa;
596 cqp_init_info.host_ctx = mem.va;
597 cqp_init_info.hmc_profile = iwdev->resource_profile;
598 cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs;
599 cqp_init_info.scratch_array = cqp->scratch_array;
600 status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info);
601 if (status) {
602 i40iw_pr_err("cqp init status %d\n", status);
603 goto exit;
604 }
605 status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err);
606 if (status) {
607 i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
608 status, maj_err, min_err);
609 goto exit;
610 }
611 spin_lock_init(&cqp->req_lock);
612 INIT_LIST_HEAD(&cqp->cqp_avail_reqs);
613 INIT_LIST_HEAD(&cqp->cqp_pending_reqs);
614 /* init the waitq of the cqp_requests and add them to the list */
615 for (i = 0; i < sqsize; i++) {
616 init_waitqueue_head(&cqp->cqp_requests[i].waitq);
617 list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs);
618 }
619 return 0;
620exit:
621 /* clean up the created resources */
622 i40iw_destroy_cqp(iwdev, false);
623 return status;
624}
625
626/**
627 * i40iw_create_ccq - create control cq
628 * @iwdev: iwarp device
629 *
630 * Return 0, if the ccq and the resources associated with it
631 * are successfully created, otherwise return error
632 */
633static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
634{
635 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
636 struct i40iw_dma_mem mem;
637 enum i40iw_status_code status;
638 struct i40iw_ccq_init_info info;
639 struct i40iw_ccq *ccq = &iwdev->ccq;
640
641 memset(&info, 0, sizeof(info));
642 dev->ccq = &ccq->sc_cq;
643 dev->ccq->dev = dev;
644 info.dev = dev;
645 ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area);
646 ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE;
647 status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq,
648 ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT);
649 if (status)
650 goto exit;
651 status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
652 I40IW_SHADOWAREA_MASK);
653 if (status)
654 goto exit;
655 ccq->sc_cq.back_cq = (void *)ccq;
656 /* populate the ccq init info */
657 info.cq_base = ccq->mem_cq.va;
658 info.cq_pa = ccq->mem_cq.pa;
659 info.num_elem = IW_CCQ_SIZE;
660 info.shadow_area = mem.va;
661 info.shadow_area_pa = mem.pa;
662 info.ceqe_mask = false;
663 info.ceq_id_valid = true;
664 info.shadow_read_threshold = 16;
665 status = dev->ccq_ops->ccq_init(dev->ccq, &info);
666 if (!status)
667 status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
668exit:
669 if (status)
670 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
671 return status;
672}
673
674/**
675 * i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq
676 * @iwdev: iwarp device
677 * @msix_vec: interrupt vector information
678 * @iwceq: ceq associated with the vector
679 * @ceq_id: the id number of the iwceq
680 *
681 * Allocate interrupt resources and enable irq handling
682 * Return 0 if successful, otherwise return error
683 */
684static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
685 struct i40iw_ceq *iwceq,
686 u32 ceq_id,
687 struct i40iw_msix_vector *msix_vec)
688{
689 enum i40iw_status_code status;
690
691 if (iwdev->msix_shared && !ceq_id) {
692 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
693 status = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "AEQCEQ", iwdev);
694 } else {
695 tasklet_init(&iwceq->dpc_tasklet, i40iw_ceq_dpc, (unsigned long)iwceq);
696 status = request_irq(msix_vec->irq, i40iw_ceq_handler, 0, "CEQ", iwceq);
697 }
698
699 cpumask_clear(&msix_vec->mask);
700 cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
701 irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask);
702
703 if (status) {
704 i40iw_pr_err("ceq irq config fail\n");
705 return I40IW_ERR_CONFIG;
706 }
707 msix_vec->ceq_id = ceq_id;
708
709 return 0;
710}
711
712/**
713 * i40iw_create_ceq - create completion event queue
714 * @iwdev: iwarp device
715 * @iwceq: pointer to the ceq resources to be created
716 * @ceq_id: the id number of the iwceq
717 *
718 * Return 0, if the ceq and the resources associated with it
719 * are successfully created, otherwise return error
720 */
721static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev,
722 struct i40iw_ceq *iwceq,
723 u32 ceq_id)
724{
725 enum i40iw_status_code status;
726 struct i40iw_ceq_init_info info;
727 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
728 u64 scratch;
729
730 memset(&info, 0, sizeof(info));
731 info.ceq_id = ceq_id;
732 iwceq->iwdev = iwdev;
733 iwceq->mem.size = sizeof(struct i40iw_ceqe) *
734 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
735 status = i40iw_allocate_dma_mem(dev->hw, &iwceq->mem, iwceq->mem.size,
736 I40IW_CEQ_ALIGNMENT);
737 if (status)
738 goto exit;
739 info.ceq_id = ceq_id;
740 info.ceqe_base = iwceq->mem.va;
741 info.ceqe_pa = iwceq->mem.pa;
742
743 info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
744 iwceq->sc_ceq.ceq_id = ceq_id;
745 info.dev = dev;
746 scratch = (uintptr_t)&iwdev->cqp.sc_cqp;
747 status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info);
748 if (!status)
749 status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch);
750
751exit:
752 if (status)
753 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
754 return status;
755}
756
757void i40iw_request_reset(struct i40iw_device *iwdev)
758{
759 struct i40e_info *ldev = iwdev->ldev;
760
761 ldev->ops->request_reset(ldev, iwdev->client, 1);
762}
763
764/**
765 * i40iw_setup_ceqs - manage the device ceq's and their interrupt resources
766 * @iwdev: iwarp device
767 * @ldev: i40e lan device
768 *
769 * Allocate a list for all device completion event queues
770 * Create the ceq's and configure their msix interrupt vectors
771 * Return 0, if at least one ceq is successfully set up, otherwise return error
772 */
773static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev,
774 struct i40e_info *ldev)
775{
776 u32 i;
777 u32 ceq_id;
778 struct i40iw_ceq *iwceq;
779 struct i40iw_msix_vector *msix_vec;
780 enum i40iw_status_code status = 0;
781 u32 num_ceqs;
782
783 if (ldev && ldev->ops && ldev->ops->setup_qvlist) {
784 status = ldev->ops->setup_qvlist(ldev, &i40iw_client,
785 iwdev->iw_qvlist);
786 if (status)
787 goto exit;
788 } else {
789 status = I40IW_ERR_BAD_PTR;
790 goto exit;
791 }
792
793 num_ceqs = min(iwdev->msix_count, iwdev->sc_dev.hmc_fpm_misc.max_ceqs);
794 iwdev->ceqlist = kcalloc(num_ceqs, sizeof(*iwdev->ceqlist), GFP_KERNEL);
795 if (!iwdev->ceqlist) {
796 status = I40IW_ERR_NO_MEMORY;
797 goto exit;
798 }
799 i = (iwdev->msix_shared) ? 0 : 1;
800 for (ceq_id = 0; i < num_ceqs; i++, ceq_id++) {
801 iwceq = &iwdev->ceqlist[ceq_id];
802 status = i40iw_create_ceq(iwdev, iwceq, ceq_id);
803 if (status) {
804 i40iw_pr_err("create ceq status = %d\n", status);
805 break;
806 }
807
808 msix_vec = &iwdev->iw_msixtbl[i];
809 iwceq->irq = msix_vec->irq;
810 iwceq->msix_idx = msix_vec->idx;
811 status = i40iw_configure_ceq_vector(iwdev, iwceq, ceq_id, msix_vec);
812 if (status) {
813 i40iw_destroy_ceq(iwdev, iwceq);
814 break;
815 }
816 i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
817 iwdev->ceqs_count++;
818 }
819exit:
820 if (status && !iwdev->ceqs_count) {
821 kfree(iwdev->ceqlist);
822 iwdev->ceqlist = NULL;
823 return status;
824 } else {
825 iwdev->sc_dev.ceq_valid = true;
826 return 0;
827 }
828
829}
830
831/**
832 * i40iw_configure_aeq_vector - set up the msix vector for aeq
833 * @iwdev: iwarp device
834 *
835 * Allocate interrupt resources and enable irq handling
836 * Return 0 if successful, otherwise return error
837 */
838static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
839{
840 struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
841 u32 ret = 0;
842
843 if (!iwdev->msix_shared) {
844 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
845 ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev);
846 }
847 if (ret) {
848 i40iw_pr_err("aeq irq config fail\n");
849 return I40IW_ERR_CONFIG;
850 }
851
852 return 0;
853}
854
855/**
856 * i40iw_create_aeq - create async event queue
857 * @iwdev: iwarp device
858 *
859 * Return 0, if the aeq and the resources associated with it
860 * are successfully created, otherwise return error
861 */
862static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
863{
864 enum i40iw_status_code status;
865 struct i40iw_aeq_init_info info;
866 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
867 struct i40iw_aeq *aeq = &iwdev->aeq;
868 u64 scratch = 0;
869 u32 aeq_size;
870
871 aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt +
872 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
873 memset(&info, 0, sizeof(info));
874 aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size;
875 status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size,
876 I40IW_AEQ_ALIGNMENT);
877 if (status)
878 goto exit;
879
880 info.aeqe_base = aeq->mem.va;
881 info.aeq_elem_pa = aeq->mem.pa;
882 info.elem_cnt = aeq_size;
883 info.dev = dev;
884 status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
885 if (status)
886 goto exit;
887 status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
888 if (!status)
889 status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
890exit:
891 if (status)
892 i40iw_free_dma_mem(dev->hw, &aeq->mem);
893 return status;
894}
895
896/**
897 * i40iw_setup_aeq - set up the device aeq
898 * @iwdev: iwarp device
899 *
900 * Create the aeq and configure its msix interrupt vector
901 * Return 0 if successful, otherwise return error
902 */
903static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
904{
905 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
906 enum i40iw_status_code status;
907
908 status = i40iw_create_aeq(iwdev);
909 if (status)
910 return status;
911
912 status = i40iw_configure_aeq_vector(iwdev);
913 if (status) {
914 i40iw_destroy_aeq(iwdev);
915 return status;
916 }
917
918 if (!iwdev->msix_shared)
919 i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
920 return 0;
921}
922
923/**
924 * i40iw_initialize_ilq - create iwarp local queue for cm
925 * @iwdev: iwarp device
926 *
927 * Return 0 if successful, otherwise return error
928 */
929static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
930{
931 struct i40iw_puda_rsrc_info info;
932 enum i40iw_status_code status;
933
934 memset(&info, 0, sizeof(info));
935 info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
936 info.cq_id = 1;
937 info.qp_id = 0;
938 info.count = 1;
939 info.pd_id = 1;
940 info.sq_size = 8192;
941 info.rq_size = 8192;
942 info.buf_size = 1024;
943 info.tx_buf_cnt = 16384;
944 info.receive = i40iw_receive_ilq;
945 info.xmit_complete = i40iw_free_sqbuf;
946 status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
947 if (status)
948 i40iw_pr_err("ilq create fail\n");
949 return status;
950}
951
952/**
953 * i40iw_initialize_ieq - create iwarp exception queue
954 * @iwdev: iwarp device
955 *
956 * Return 0 if successful, otherwise return error
957 */
958static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
959{
960 struct i40iw_puda_rsrc_info info;
961 enum i40iw_status_code status;
962
963 memset(&info, 0, sizeof(info));
964 info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
965 info.cq_id = 2;
966 info.qp_id = iwdev->vsi.exception_lan_queue;
967 info.count = 1;
968 info.pd_id = 2;
969 info.sq_size = 8192;
970 info.rq_size = 8192;
971 info.buf_size = iwdev->vsi.mtu + VLAN_ETH_HLEN;
972 info.tx_buf_cnt = 4096;
973 status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
974 if (status)
975 i40iw_pr_err("ieq create fail\n");
976 return status;
977}
978
979/**
980 * i40iw_reinitialize_ieq - destroy and re-create ieq
981 * @dev: iwarp device
982 */
983void i40iw_reinitialize_ieq(struct i40iw_sc_dev *dev)
984{
985 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
986
987 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, false);
988 if (i40iw_initialize_ieq(iwdev)) {
989 iwdev->reset = true;
990 i40iw_request_reset(iwdev);
991 }
992}
993
994/**
995 * i40iw_hmc_setup - create hmc objects for the device
996 * @iwdev: iwarp device
997 *
998 * Set up the device private memory space for the number and size of
999 * the hmc objects and create the objects
1000 * Return 0 if successful, otherwise return error
1001 */
1002static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
1003{
1004 enum i40iw_status_code status;
1005
1006 iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
1007 status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
1008 if (status)
1009 goto exit;
1010 status = i40iw_create_hmc_objs(iwdev, true);
1011 if (status)
1012 goto exit;
1013 iwdev->init_state = HMC_OBJS_CREATED;
1014exit:
1015 return status;
1016}
1017
1018/**
1019 * i40iw_del_init_mem - deallocate memory resources
1020 * @iwdev: iwarp device
1021 */
1022static void i40iw_del_init_mem(struct i40iw_device *iwdev)
1023{
1024 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1025
1026 i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem);
1027 kfree(dev->hmc_info->sd_table.sd_entry);
1028 dev->hmc_info->sd_table.sd_entry = NULL;
1029 kfree(iwdev->mem_resources);
1030 iwdev->mem_resources = NULL;
1031 kfree(iwdev->ceqlist);
1032 iwdev->ceqlist = NULL;
1033 kfree(iwdev->iw_msixtbl);
1034 iwdev->iw_msixtbl = NULL;
1035 kfree(iwdev->hmc_info_mem);
1036 iwdev->hmc_info_mem = NULL;
1037}
1038
1039/**
1040 * i40iw_del_macip_entry - remove a mac ip address entry from the hw table
1041 * @iwdev: iwarp device
1042 * @idx: the index of the mac ip address to delete
1043 */
1044static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
1045{
1046 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1047 struct i40iw_cqp_request *cqp_request;
1048 struct cqp_commands_info *cqp_info;
1049 enum i40iw_status_code status = 0;
1050
1051 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1052 if (!cqp_request) {
1053 i40iw_pr_err("cqp_request memory failed\n");
1054 return;
1055 }
1056 cqp_info = &cqp_request->info;
1057 cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY;
1058 cqp_info->post_sq = 1;
1059 cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1060 cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1061 cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx;
1062 cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0;
1063 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1064 if (status)
1065 i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
1066}
1067
1068/**
1069 * i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table
1070 * @iwdev: iwarp device
1071 * @mac_addr: pointer to mac address
1072 * @idx: the index of the mac ip address to add
1073 */
1074static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
1075 u8 *mac_addr,
1076 u8 idx)
1077{
1078 struct i40iw_local_mac_ipaddr_entry_info *info;
1079 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1080 struct i40iw_cqp_request *cqp_request;
1081 struct cqp_commands_info *cqp_info;
1082 enum i40iw_status_code status = 0;
1083
1084 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1085 if (!cqp_request) {
1086 i40iw_pr_err("cqp_request memory failed\n");
1087 return I40IW_ERR_NO_MEMORY;
1088 }
1089
1090 cqp_info = &cqp_request->info;
1091
1092 cqp_info->post_sq = 1;
1093 info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info;
1094 ether_addr_copy(info->mac_addr, mac_addr);
1095 info->entry_idx = idx;
1096 cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1097 cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY;
1098 cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1099 cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1100 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1101 if (status)
1102 i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
1103 return status;
1104}
1105
1106/**
1107 * i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry
1108 * @iwdev: iwarp device
1109 * @mac_ip_tbl_idx: the index of the new mac ip address
1110 *
1111 * Allocate a mac ip address entry and update the mac_ip_tbl_idx
1112 * to hold the index of the newly created mac ip address
1113 * Return 0 if successful, otherwise return error
1114 */
1115static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
1116 u16 *mac_ip_tbl_idx)
1117{
1118 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1119 struct i40iw_cqp_request *cqp_request;
1120 struct cqp_commands_info *cqp_info;
1121 enum i40iw_status_code status = 0;
1122
1123 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1124 if (!cqp_request) {
1125 i40iw_pr_err("cqp_request memory failed\n");
1126 return I40IW_ERR_NO_MEMORY;
1127 }
1128
1129 /* increment refcount, because we need the cqp request ret value */
1130 atomic_inc(&cqp_request->refcount);
1131
1132 cqp_info = &cqp_request->info;
1133 cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY;
1134 cqp_info->post_sq = 1;
1135 cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1136 cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1137 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1138 if (!status)
1139 *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
1140 else
1141 i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail");
1142 /* decrement refcount and free the cqp request, if no longer used */
1143 i40iw_put_cqp_request(iwcqp, cqp_request);
1144 return status;
1145}
1146
1147/**
1148 * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
1149 * @iwdev: iwarp device
1150 * @macaddr: pointer to mac address
1151 *
1152 * Allocate a mac ip address entry and add it to the hw table
1153 * Return 0 if successful, otherwise return error
1154 */
1155static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
1156 u8 *macaddr)
1157{
1158 enum i40iw_status_code status;
1159
1160 status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
1161 if (!status) {
1162 status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
1163 (u8)iwdev->mac_ip_table_idx);
1164 if (status)
1165 i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1166 }
1167 return status;
1168}
1169
1170/**
1171 * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
1172 * @iwdev: iwarp device
1173 */
1174static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
1175{
1176 struct net_device *ip_dev;
1177 struct inet6_dev *idev;
1178 struct inet6_ifaddr *ifp, *tmp;
1179 u32 local_ipaddr6[4];
1180
1181 rcu_read_lock();
1182 for_each_netdev_rcu(&init_net, ip_dev) {
1183 if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) &&
1184 (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
1185 (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
1186 idev = __in6_dev_get(ip_dev);
1187 if (!idev) {
1188 i40iw_pr_err("ipv6 inet device not found\n");
1189 break;
1190 }
1191 list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
1192 i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr,
1193 rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr);
1194 i40iw_copy_ip_ntohl(local_ipaddr6,
1195 ifp->addr.in6_u.u6_addr32);
1196 i40iw_manage_arp_cache(iwdev,
1197 ip_dev->dev_addr,
1198 local_ipaddr6,
1199 false,
1200 I40IW_ARP_ADD);
1201 }
1202 }
1203 }
1204 rcu_read_unlock();
1205}
1206
1207/**
1208 * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
1209 * @iwdev: iwarp device
1210 */
1211static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
1212{
1213 struct net_device *dev;
1214 struct in_device *idev;
1215 bool got_lock = true;
1216 u32 ip_addr;
1217
1218 if (!rtnl_trylock())
1219 got_lock = false;
1220
1221 for_each_netdev(&init_net, dev) {
1222 if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) &&
1223 (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
1224 (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
1225 const struct in_ifaddr *ifa;
1226
1227 idev = in_dev_get(dev);
1228 in_dev_for_each_ifa_rtnl(ifa, idev) {
1229 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1230 "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
1231 rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
1232
1233 ip_addr = ntohl(ifa->ifa_address);
1234 i40iw_manage_arp_cache(iwdev,
1235 dev->dev_addr,
1236 &ip_addr,
1237 true,
1238 I40IW_ARP_ADD);
1239 }
1240
1241 in_dev_put(idev);
1242 }
1243 }
1244 if (got_lock)
1245 rtnl_unlock();
1246}
1247
1248/**
1249 * i40iw_add_mac_ip - add mac and ip addresses
1250 * @iwdev: iwarp device
1251 *
1252 * Create and add a mac ip address entry to the hw table and
1253 * ipv4/ipv6 addresses to the arp cache
1254 * Return 0 if successful, otherwise return error
1255 */
1256static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
1257{
1258 struct net_device *netdev = iwdev->netdev;
1259 enum i40iw_status_code status;
1260
1261 status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
1262 if (status)
1263 return status;
1264 i40iw_add_ipv4_addr(iwdev);
1265 i40iw_add_ipv6_addr(iwdev);
1266 return 0;
1267}
1268
1269/**
1270 * i40iw_wait_pe_ready - Check if firmware is ready
1271 * @hw: provides access to registers
1272 */
1273static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
1274{
1275 u32 statusfw;
1276 u32 statuscpu0;
1277 u32 statuscpu1;
1278 u32 statuscpu2;
1279 u32 retrycount = 0;
1280
1281 do {
1282 statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
1283 i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
1284 statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
1285 i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
1286 statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
1287 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
1288 __LINE__, statuscpu1);
1289 statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
1290 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
1291 __LINE__, statuscpu2);
1292 if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
1293 break; /* SUCCESS */
1294 msleep(1000);
1295 retrycount++;
1296 } while (retrycount < 14);
1297 i40iw_wr32(hw, 0xb4040, 0x4C104C5);
1298}
1299
1300/**
1301 * i40iw_initialize_dev - initialize device
1302 * @iwdev: iwarp device
1303 * @ldev: lan device information
1304 *
1305 * Allocate memory for the hmc objects and initialize iwdev
1306 * Return 0 if successful, otherwise clean up the resources
1307 * and return error
1308 */
1309static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
1310 struct i40e_info *ldev)
1311{
1312 enum i40iw_status_code status;
1313 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1314 struct i40iw_device_init_info info;
1315 struct i40iw_vsi_init_info vsi_info;
1316 struct i40iw_dma_mem mem;
1317 struct i40iw_l2params l2params;
1318 u32 size;
1319 struct i40iw_vsi_stats_info stats_info;
1320 u16 last_qset = I40IW_NO_QSET;
1321 u16 qset;
1322 u32 i;
1323
1324 memset(&l2params, 0, sizeof(l2params));
1325 memset(&info, 0, sizeof(info));
1326 size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
1327 (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
1328 iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
1329 if (!iwdev->hmc_info_mem)
1330 return I40IW_ERR_NO_MEMORY;
1331
1332 iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
1333 dev->hmc_info = &iwdev->hw.hmc;
1334 dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
1335 status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
1336 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1337 if (status)
1338 goto error;
1339 info.fpm_query_buf_pa = mem.pa;
1340 info.fpm_query_buf = mem.va;
1341 status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
1342 I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
1343 if (status)
1344 goto error;
1345 info.fpm_commit_buf_pa = mem.pa;
1346 info.fpm_commit_buf = mem.va;
1347 info.hmc_fn_id = ldev->fid;
1348 info.is_pf = (ldev->ftype) ? false : true;
1349 info.bar0 = ldev->hw_addr;
1350 info.hw = &iwdev->hw;
1351 info.debug_mask = debug;
1352 l2params.mtu =
1353 (ldev->params.mtu) ? ldev->params.mtu : I40IW_DEFAULT_MTU;
1354 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
1355 qset = ldev->params.qos.prio_qos[i].qs_handle;
1356 l2params.qs_handle_list[i] = qset;
1357 if (last_qset == I40IW_NO_QSET)
1358 last_qset = qset;
1359 else if ((qset != last_qset) && (qset != I40IW_NO_QSET))
1360 iwdev->dcb = true;
1361 }
1362 i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb);
1363 info.vchnl_send = i40iw_virtchnl_send;
1364 status = i40iw_device_init(&iwdev->sc_dev, &info);
1365
1366 if (status)
1367 goto error;
1368 memset(&vsi_info, 0, sizeof(vsi_info));
1369 vsi_info.dev = &iwdev->sc_dev;
1370 vsi_info.back_vsi = (void *)iwdev;
1371 vsi_info.params = &l2params;
1372 vsi_info.exception_lan_queue = 1;
1373 i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info);
1374
1375 if (dev->is_pf) {
1376 memset(&stats_info, 0, sizeof(stats_info));
1377 stats_info.fcn_id = ldev->fid;
1378 stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL);
1379 if (!stats_info.pestat) {
1380 status = I40IW_ERR_NO_MEMORY;
1381 goto error;
1382 }
1383 stats_info.stats_initialize = true;
1384 if (stats_info.pestat)
1385 i40iw_vsi_stats_init(&iwdev->vsi, &stats_info);
1386 }
1387 return status;
1388error:
1389 kfree(iwdev->hmc_info_mem);
1390 iwdev->hmc_info_mem = NULL;
1391 return status;
1392}
1393
1394/**
1395 * i40iw_register_notifiers - register tcp ip notifiers
1396 */
1397static void i40iw_register_notifiers(void)
1398{
1399 register_inetaddr_notifier(&i40iw_inetaddr_notifier);
1400 register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1401 register_netevent_notifier(&i40iw_net_notifier);
1402 register_netdevice_notifier(&i40iw_netdevice_notifier);
1403}
1404
1405/**
1406 * i40iw_unregister_notifiers - unregister tcp ip notifiers
1407 */
1408
1409static void i40iw_unregister_notifiers(void)
1410{
1411 unregister_netevent_notifier(&i40iw_net_notifier);
1412 unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
1413 unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1414 unregister_netdevice_notifier(&i40iw_netdevice_notifier);
1415}
1416
1417/**
1418 * i40iw_save_msix_info - copy msix vector information to iwarp device
1419 * @iwdev: iwarp device
1420 * @ldev: lan device information
1421 *
1422 * Allocate iwdev msix table and copy the ldev msix info to the table
1423 * Return 0 if successful, otherwise return error
1424 */
1425static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
1426 struct i40e_info *ldev)
1427{
1428 struct i40e_qvlist_info *iw_qvlist;
1429 struct i40e_qv_info *iw_qvinfo;
1430 u32 ceq_idx;
1431 u32 i;
1432 u32 size;
1433
1434 if (!ldev->msix_count) {
1435 i40iw_pr_err("No MSI-X vectors\n");
1436 return I40IW_ERR_CONFIG;
1437 }
1438
1439 iwdev->msix_count = ldev->msix_count;
1440
1441 size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
1442 size += sizeof(struct i40e_qvlist_info);
1443 size += sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
1444 iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
1445
1446 if (!iwdev->iw_msixtbl)
1447 return I40IW_ERR_NO_MEMORY;
1448 iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
1449 iw_qvlist = iwdev->iw_qvlist;
1450 iw_qvinfo = iw_qvlist->qv_info;
1451 iw_qvlist->num_vectors = iwdev->msix_count;
1452 if (iwdev->msix_count <= num_online_cpus())
1453 iwdev->msix_shared = true;
1454 for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
1455 iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
1456 iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
1457 iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx;
1458 if (i == 0) {
1459 iw_qvinfo->aeq_idx = 0;
1460 if (iwdev->msix_shared)
1461 iw_qvinfo->ceq_idx = ceq_idx++;
1462 else
1463 iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
1464 } else {
1465 iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
1466 iw_qvinfo->ceq_idx = ceq_idx++;
1467 }
1468 iw_qvinfo->itr_idx = 3;
1469 iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
1470 }
1471 return 0;
1472}
1473
1474/**
1475 * i40iw_deinit_device - clean up the device resources
1476 * @iwdev: iwarp device
1477 *
1478 * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
1479 * destroy the device queues and free the pble and the hmc objects
1480 */
1481static void i40iw_deinit_device(struct i40iw_device *iwdev)
1482{
1483 struct i40e_info *ldev = iwdev->ldev;
1484
1485 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1486
1487 i40iw_pr_info("state = %d\n", iwdev->init_state);
1488 if (iwdev->param_wq)
1489 destroy_workqueue(iwdev->param_wq);
1490
1491 switch (iwdev->init_state) {
1492 case RDMA_DEV_REGISTERED:
1493 iwdev->iw_status = 0;
1494 i40iw_port_ibevent(iwdev);
1495 i40iw_destroy_rdma_device(iwdev->iwibdev);
1496 /* fallthrough */
1497 case IP_ADDR_REGISTERED:
1498 if (!iwdev->reset)
1499 i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1500 /* fallthrough */
1501 /* fallthrough */
1502 case PBLE_CHUNK_MEM:
1503 i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
1504 /* fallthrough */
1505 case CEQ_CREATED:
1506 i40iw_dele_ceqs(iwdev);
1507 /* fallthrough */
1508 case AEQ_CREATED:
1509 i40iw_destroy_aeq(iwdev);
1510 /* fallthrough */
1511 case IEQ_CREATED:
1512 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, iwdev->reset);
1513 /* fallthrough */
1514 case ILQ_CREATED:
1515 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, iwdev->reset);
1516 /* fallthrough */
1517 case CCQ_CREATED:
1518 i40iw_destroy_ccq(iwdev);
1519 /* fallthrough */
1520 case HMC_OBJS_CREATED:
1521 i40iw_del_hmc_objects(dev, dev->hmc_info, true, iwdev->reset);
1522 /* fallthrough */
1523 case CQP_CREATED:
1524 i40iw_destroy_cqp(iwdev, true);
1525 /* fallthrough */
1526 case INITIAL_STATE:
1527 i40iw_cleanup_cm_core(&iwdev->cm_core);
1528 if (iwdev->vsi.pestat) {
1529 i40iw_vsi_stats_free(&iwdev->vsi);
1530 kfree(iwdev->vsi.pestat);
1531 }
1532 i40iw_del_init_mem(iwdev);
1533 break;
1534 case INVALID_STATE:
1535 /* fallthrough */
1536 default:
1537 i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
1538 break;
1539 }
1540
1541 i40iw_del_handler(i40iw_find_i40e_handler(ldev));
1542 kfree(iwdev->hdl);
1543}
1544
1545/**
1546 * i40iw_setup_init_state - set up the initial device struct
1547 * @hdl: handler for iwarp device - one per instance
1548 * @ldev: lan device information
1549 * @client: iwarp client information, provided during registration
1550 *
1551 * Initialize the iwarp device and its hdl information
1552 * using the ldev and client information
1553 * Return 0 if successful, otherwise return error
1554 */
1555static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
1556 struct i40e_info *ldev,
1557 struct i40e_client *client)
1558{
1559 struct i40iw_device *iwdev = &hdl->device;
1560 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1561 enum i40iw_status_code status;
1562
1563 memcpy(&hdl->ldev, ldev, sizeof(*ldev));
1564
1565 iwdev->mpa_version = mpa_version;
1566 iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
1567 (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
1568 I40IW_HMC_PROFILE_DEFAULT;
1569 iwdev->max_rdma_vfs =
1570 (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ? max_rdma_vfs : 0;
1571 iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
1572 iwdev->netdev = ldev->netdev;
1573 hdl->client = client;
1574 if (!ldev->ftype)
1575 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
1576 else
1577 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
1578
1579 status = i40iw_save_msix_info(iwdev, ldev);
1580 if (status)
1581 return status;
1582 iwdev->hw.dev_context = (void *)ldev->pcidev;
1583 iwdev->hw.hw_addr = ldev->hw_addr;
1584 status = i40iw_allocate_dma_mem(&iwdev->hw,
1585 &iwdev->obj_mem, 8192, 4096);
1586 if (status)
1587 goto exit;
1588 iwdev->obj_next = iwdev->obj_mem;
1589 iwdev->push_mode = push_mode;
1590
1591 init_waitqueue_head(&iwdev->vchnl_waitq);
1592 init_waitqueue_head(&dev->vf_reqs);
1593 init_waitqueue_head(&iwdev->close_wq);
1594
1595 status = i40iw_initialize_dev(iwdev, ldev);
1596exit:
1597 if (status) {
1598 kfree(iwdev->iw_msixtbl);
1599 i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
1600 iwdev->iw_msixtbl = NULL;
1601 }
1602 return status;
1603}
1604
1605/**
1606 * i40iw_get_used_rsrc - determine resources used internally
1607 * @iwdev: iwarp device
1608 *
1609 * Called after internal allocations
1610 */
1611static void i40iw_get_used_rsrc(struct i40iw_device *iwdev)
1612{
1613 iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0);
1614 iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0);
1615 iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0);
1616 iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0);
1617}
1618
1619/**
1620 * i40iw_open - client interface operation open for iwarp/uda device
1621 * @ldev: lan device information
1622 * @client: iwarp client information, provided during registration
1623 *
1624 * Called by the lan driver during the processing of client register
1625 * Create device resources, set up queues, pble and hmc objects and
1626 * register the device with the ib verbs interface
1627 * Return 0 if successful, otherwise return error
1628 */
1629static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
1630{
1631 struct i40iw_device *iwdev;
1632 struct i40iw_sc_dev *dev;
1633 enum i40iw_status_code status;
1634 struct i40iw_handler *hdl;
1635
1636 hdl = i40iw_find_netdev(ldev->netdev);
1637 if (hdl)
1638 return 0;
1639
1640 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
1641 if (!hdl)
1642 return -ENOMEM;
1643 iwdev = &hdl->device;
1644 iwdev->hdl = hdl;
1645 dev = &iwdev->sc_dev;
1646 if (i40iw_setup_cm_core(iwdev)) {
1647 kfree(iwdev->hdl);
1648 return -ENOMEM;
1649 }
1650
1651 dev->back_dev = (void *)iwdev;
1652 iwdev->ldev = &hdl->ldev;
1653 iwdev->client = client;
1654 mutex_init(&iwdev->pbl_mutex);
1655 i40iw_add_handler(hdl);
1656
1657 do {
1658 status = i40iw_setup_init_state(hdl, ldev, client);
1659 if (status)
1660 break;
1661 iwdev->init_state = INITIAL_STATE;
1662 if (dev->is_pf)
1663 i40iw_wait_pe_ready(dev->hw);
1664 status = i40iw_create_cqp(iwdev);
1665 if (status)
1666 break;
1667 iwdev->init_state = CQP_CREATED;
1668 status = i40iw_hmc_setup(iwdev);
1669 if (status)
1670 break;
1671 status = i40iw_create_ccq(iwdev);
1672 if (status)
1673 break;
1674 iwdev->init_state = CCQ_CREATED;
1675 status = i40iw_initialize_ilq(iwdev);
1676 if (status)
1677 break;
1678 iwdev->init_state = ILQ_CREATED;
1679 status = i40iw_initialize_ieq(iwdev);
1680 if (status)
1681 break;
1682 iwdev->init_state = IEQ_CREATED;
1683 status = i40iw_setup_aeq(iwdev);
1684 if (status)
1685 break;
1686 iwdev->init_state = AEQ_CREATED;
1687 status = i40iw_setup_ceqs(iwdev, ldev);
1688 if (status)
1689 break;
1690 iwdev->init_state = CEQ_CREATED;
1691 status = i40iw_initialize_hw_resources(iwdev);
1692 if (status)
1693 break;
1694 i40iw_get_used_rsrc(iwdev);
1695 dev->ccq_ops->ccq_arm(dev->ccq);
1696 status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
1697 if (status)
1698 break;
1699 iwdev->init_state = PBLE_CHUNK_MEM;
1700 iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM);
1701 status = i40iw_add_mac_ip(iwdev);
1702 if (status)
1703 break;
1704 iwdev->init_state = IP_ADDR_REGISTERED;
1705 if (i40iw_register_rdma_device(iwdev)) {
1706 i40iw_pr_err("register rdma device fail\n");
1707 break;
1708 };
1709
1710 iwdev->init_state = RDMA_DEV_REGISTERED;
1711 iwdev->iw_status = 1;
1712 i40iw_port_ibevent(iwdev);
1713 iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM);
1714 if(iwdev->param_wq == NULL)
1715 break;
1716 i40iw_pr_info("i40iw_open completed\n");
1717 return 0;
1718 } while (0);
1719
1720 i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
1721 i40iw_deinit_device(iwdev);
1722 return -ERESTART;
1723}
1724
1725/**
1726 * i40iw_l2params_worker - worker for l2 params change
1727 * @work: work pointer for l2 params
1728 */
1729static void i40iw_l2params_worker(struct work_struct *work)
1730{
1731 struct l2params_work *dwork =
1732 container_of(work, struct l2params_work, work);
1733 struct i40iw_device *iwdev = dwork->iwdev;
1734
1735 i40iw_change_l2params(&iwdev->vsi, &dwork->l2params);
1736 atomic_dec(&iwdev->params_busy);
1737 kfree(work);
1738}
1739
1740/**
1741 * i40iw_l2param_change - handle qs handles for qos and mss change
1742 * @ldev: lan device information
1743 * @client: client for paramater change
1744 * @params: new parameters from L2
1745 */
1746static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client,
1747 struct i40e_params *params)
1748{
1749 struct i40iw_handler *hdl;
1750 struct i40iw_l2params *l2params;
1751 struct l2params_work *work;
1752 struct i40iw_device *iwdev;
1753 int i;
1754
1755 hdl = i40iw_find_i40e_handler(ldev);
1756 if (!hdl)
1757 return;
1758
1759 iwdev = &hdl->device;
1760
1761 if (atomic_read(&iwdev->params_busy))
1762 return;
1763
1764
1765 work = kzalloc(sizeof(*work), GFP_KERNEL);
1766 if (!work)
1767 return;
1768
1769 atomic_inc(&iwdev->params_busy);
1770
1771 work->iwdev = iwdev;
1772 l2params = &work->l2params;
1773 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++)
1774 l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle;
1775
1776 l2params->mtu = (params->mtu) ? params->mtu : iwdev->vsi.mtu;
1777
1778 INIT_WORK(&work->work, i40iw_l2params_worker);
1779 queue_work(iwdev->param_wq, &work->work);
1780}
1781
1782/**
1783 * i40iw_close - client interface operation close for iwarp/uda device
1784 * @ldev: lan device information
1785 * @client: client to close
1786 *
1787 * Called by the lan driver during the processing of client unregister
1788 * Destroy and clean up the driver resources
1789 */
1790static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
1791{
1792 struct i40iw_device *iwdev;
1793 struct i40iw_handler *hdl;
1794
1795 hdl = i40iw_find_i40e_handler(ldev);
1796 if (!hdl)
1797 return;
1798
1799 iwdev = &hdl->device;
1800 iwdev->closing = true;
1801
1802 if (reset)
1803 iwdev->reset = true;
1804
1805 i40iw_cm_teardown_connections(iwdev, NULL, NULL, true);
1806 destroy_workqueue(iwdev->virtchnl_wq);
1807 i40iw_deinit_device(iwdev);
1808}
1809
1810/**
1811 * i40iw_vf_reset - process VF reset
1812 * @ldev: lan device information
1813 * @client: client interface instance
1814 * @vf_id: virtual function id
1815 *
1816 * Called when a VF is reset by the PF
1817 * Destroy and clean up the VF resources
1818 */
1819static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
1820{
1821 struct i40iw_handler *hdl;
1822 struct i40iw_sc_dev *dev;
1823 struct i40iw_hmc_fcn_info hmc_fcn_info;
1824 struct i40iw_virt_mem vf_dev_mem;
1825 struct i40iw_vfdev *tmp_vfdev;
1826 unsigned int i;
1827 unsigned long flags;
1828 struct i40iw_device *iwdev;
1829
1830 hdl = i40iw_find_i40e_handler(ldev);
1831 if (!hdl)
1832 return;
1833
1834 dev = &hdl->device.sc_dev;
1835 iwdev = (struct i40iw_device *)dev->back_dev;
1836
1837 for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
1838 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
1839 continue;
1840 /* free all resources allocated on behalf of vf */
1841 tmp_vfdev = dev->vf_dev[i];
1842 spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags);
1843 dev->vf_dev[i] = NULL;
1844 spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags);
1845 i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
1846 /* remove vf hmc function */
1847 memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
1848 hmc_fcn_info.vf_id = vf_id;
1849 hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
1850 hmc_fcn_info.free_fcn = true;
1851 i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
1852 /* free vf_dev */
1853 vf_dev_mem.va = tmp_vfdev;
1854 vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
1855 sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
1856 i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
1857 break;
1858 }
1859}
1860
1861/**
1862 * i40iw_vf_enable - enable a number of VFs
1863 * @ldev: lan device information
1864 * @client: client interface instance
1865 * @num_vfs: number of VFs for the PF
1866 *
1867 * Called when the number of VFs changes
1868 */
1869static void i40iw_vf_enable(struct i40e_info *ldev,
1870 struct i40e_client *client,
1871 u32 num_vfs)
1872{
1873 struct i40iw_handler *hdl;
1874
1875 hdl = i40iw_find_i40e_handler(ldev);
1876 if (!hdl)
1877 return;
1878
1879 if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
1880 hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
1881 else
1882 hdl->device.max_enabled_vfs = num_vfs;
1883}
1884
1885/**
1886 * i40iw_vf_capable - check if VF capable
1887 * @ldev: lan device information
1888 * @client: client interface instance
1889 * @vf_id: virtual function id
1890 *
1891 * Return 1 if a VF slot is available or if VF is already RDMA enabled
1892 * Return 0 otherwise
1893 */
1894static int i40iw_vf_capable(struct i40e_info *ldev,
1895 struct i40e_client *client,
1896 u32 vf_id)
1897{
1898 struct i40iw_handler *hdl;
1899 struct i40iw_sc_dev *dev;
1900 unsigned int i;
1901
1902 hdl = i40iw_find_i40e_handler(ldev);
1903 if (!hdl)
1904 return 0;
1905
1906 dev = &hdl->device.sc_dev;
1907
1908 for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
1909 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
1910 return 1;
1911 }
1912
1913 return 0;
1914}
1915
1916/**
1917 * i40iw_virtchnl_receive - receive a message through the virtual channel
1918 * @ldev: lan device information
1919 * @client: client interface instance
1920 * @vf_id: virtual function id associated with the message
1921 * @msg: message buffer pointer
1922 * @len: length of the message
1923 *
1924 * Invoke virtual channel receive operation for the given msg
1925 * Return 0 if successful, otherwise return error
1926 */
1927static int i40iw_virtchnl_receive(struct i40e_info *ldev,
1928 struct i40e_client *client,
1929 u32 vf_id,
1930 u8 *msg,
1931 u16 len)
1932{
1933 struct i40iw_handler *hdl;
1934 struct i40iw_sc_dev *dev;
1935 struct i40iw_device *iwdev;
1936 int ret_code = I40IW_NOT_SUPPORTED;
1937
1938 if (!len || !msg)
1939 return I40IW_ERR_PARAM;
1940
1941 hdl = i40iw_find_i40e_handler(ldev);
1942 if (!hdl)
1943 return I40IW_ERR_PARAM;
1944
1945 dev = &hdl->device.sc_dev;
1946 iwdev = dev->back_dev;
1947
1948 if (dev->vchnl_if.vchnl_recv) {
1949 ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
1950 if (!dev->is_pf) {
1951 atomic_dec(&iwdev->vchnl_msgs);
1952 wake_up(&iwdev->vchnl_waitq);
1953 }
1954 }
1955 return ret_code;
1956}
1957
1958/**
1959 * i40iw_vf_clear_to_send - wait to send virtual channel message
1960 * @dev: iwarp device *
1961 * Wait for until virtual channel is clear
1962 * before sending the next message
1963 *
1964 * Returns false if error
1965 * Returns true if clear to send
1966 */
1967bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
1968{
1969 struct i40iw_device *iwdev;
1970 wait_queue_entry_t wait;
1971
1972 iwdev = dev->back_dev;
1973
1974 if (!wq_has_sleeper(&dev->vf_reqs) &&
1975 (atomic_read(&iwdev->vchnl_msgs) == 0))
1976 return true; /* virtual channel is clear */
1977
1978 init_wait(&wait);
1979 add_wait_queue_exclusive(&dev->vf_reqs, &wait);
1980
1981 if (!wait_event_timeout(dev->vf_reqs,
1982 (atomic_read(&iwdev->vchnl_msgs) == 0),
1983 I40IW_VCHNL_EVENT_TIMEOUT))
1984 dev->vchnl_up = false;
1985
1986 remove_wait_queue(&dev->vf_reqs, &wait);
1987
1988 return dev->vchnl_up;
1989}
1990
1991/**
1992 * i40iw_virtchnl_send - send a message through the virtual channel
1993 * @dev: iwarp device
1994 * @vf_id: virtual function id associated with the message
1995 * @msg: virtual channel message buffer pointer
1996 * @len: length of the message
1997 *
1998 * Invoke virtual channel send operation for the given msg
1999 * Return 0 if successful, otherwise return error
2000 */
2001static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
2002 u32 vf_id,
2003 u8 *msg,
2004 u16 len)
2005{
2006 struct i40iw_device *iwdev;
2007 struct i40e_info *ldev;
2008
2009 if (!dev || !dev->back_dev)
2010 return I40IW_ERR_BAD_PTR;
2011
2012 iwdev = dev->back_dev;
2013 ldev = iwdev->ldev;
2014
2015 if (ldev && ldev->ops && ldev->ops->virtchnl_send)
2016 return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
2017 return I40IW_ERR_BAD_PTR;
2018}
2019
2020/* client interface functions */
2021static const struct i40e_client_ops i40e_ops = {
2022 .open = i40iw_open,
2023 .close = i40iw_close,
2024 .l2_param_change = i40iw_l2param_change,
2025 .virtchnl_receive = i40iw_virtchnl_receive,
2026 .vf_reset = i40iw_vf_reset,
2027 .vf_enable = i40iw_vf_enable,
2028 .vf_capable = i40iw_vf_capable
2029};
2030
2031/**
2032 * i40iw_init_module - driver initialization function
2033 *
2034 * First function to call when the driver is loaded
2035 * Register the driver as i40e client and port mapper client
2036 */
2037static int __init i40iw_init_module(void)
2038{
2039 int ret;
2040
2041 memset(&i40iw_client, 0, sizeof(i40iw_client));
2042 i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
2043 i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
2044 i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
2045 i40iw_client.ops = &i40e_ops;
2046 memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
2047 i40iw_client.type = I40E_CLIENT_IWARP;
2048 spin_lock_init(&i40iw_handler_lock);
2049 ret = i40e_register_client(&i40iw_client);
2050 i40iw_register_notifiers();
2051
2052 return ret;
2053}
2054
2055/**
2056 * i40iw_exit_module - driver exit clean up function
2057 *
2058 * The function is called just before the driver is unloaded
2059 * Unregister the driver as i40e client and port mapper client
2060 */
2061static void __exit i40iw_exit_module(void)
2062{
2063 i40iw_unregister_notifiers();
2064 i40e_unregister_client(&i40iw_client);
2065}
2066
2067module_init(i40iw_init_module);
2068module_exit(i40iw_exit_module);