1 /*******************************************************************************
3 * Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
33 *******************************************************************************/
35 #include <linux/module.h>
36 #include <linux/moduleparam.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
40 #include <linux/tcp.h>
41 #include <linux/if_vlan.h>
42 #include <net/addrconf.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
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)
58 module_param(debug, int, 0644);
59 MODULE_PARM_DESC(debug, "debug flags: 0=disabled (default), 0x7fffffff=all");
61 static int resource_profile;
62 module_param(resource_profile, int, 0644);
63 MODULE_PARM_DESC(resource_profile,
64 "Resource Profile: 0=no VF RDMA support (default), 1=Weighted VF, 2=Even Distribution");
66 static int max_rdma_vfs = 32;
67 module_param(max_rdma_vfs, int, 0644);
68 MODULE_PARM_DESC(max_rdma_vfs, "Maximum VF count: 0-32 32=default");
69 static int mpa_version = 2;
70 module_param(mpa_version, int, 0644);
71 MODULE_PARM_DESC(mpa_version, "MPA version to be used in MPA Req/Resp 1 or 2");
73 MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
74 MODULE_DESCRIPTION("Intel(R) Ethernet Connection X722 iWARP RDMA Driver");
75 MODULE_LICENSE("Dual BSD/GPL");
77 static struct i40e_client i40iw_client;
78 static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw";
80 static LIST_HEAD(i40iw_handlers);
81 static spinlock_t i40iw_handler_lock;
83 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
84 u32 vf_id, u8 *msg, u16 len);
86 static struct notifier_block i40iw_inetaddr_notifier = {
87 .notifier_call = i40iw_inetaddr_event
90 static struct notifier_block i40iw_inetaddr6_notifier = {
91 .notifier_call = i40iw_inet6addr_event
94 static struct notifier_block i40iw_net_notifier = {
95 .notifier_call = i40iw_net_event
98 static struct notifier_block i40iw_netdevice_notifier = {
99 .notifier_call = i40iw_netdevice_event
103 * i40iw_find_i40e_handler - find a handler given a client info
104 * @ldev: pointer to a client info
106 static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev)
108 struct i40iw_handler *hdl;
111 spin_lock_irqsave(&i40iw_handler_lock, flags);
112 list_for_each_entry(hdl, &i40iw_handlers, list) {
113 if (hdl->ldev.netdev == ldev->netdev) {
114 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
118 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
123 * i40iw_find_netdev - find a handler given a netdev
124 * @netdev: pointer to net_device
126 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev)
128 struct i40iw_handler *hdl;
131 spin_lock_irqsave(&i40iw_handler_lock, flags);
132 list_for_each_entry(hdl, &i40iw_handlers, list) {
133 if (hdl->ldev.netdev == netdev) {
134 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
138 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
143 * i40iw_add_handler - add a handler to the list
144 * @hdl: handler to be added to the handler list
146 static void i40iw_add_handler(struct i40iw_handler *hdl)
150 spin_lock_irqsave(&i40iw_handler_lock, flags);
151 list_add(&hdl->list, &i40iw_handlers);
152 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
156 * i40iw_del_handler - delete a handler from the list
157 * @hdl: handler to be deleted from the handler list
159 static int i40iw_del_handler(struct i40iw_handler *hdl)
163 spin_lock_irqsave(&i40iw_handler_lock, flags);
164 list_del(&hdl->list);
165 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
170 * i40iw_enable_intr - set up device interrupts
171 * @dev: hardware control device structure
172 * @msix_id: id of the interrupt to be enabled
174 static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id)
178 val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
179 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
180 (3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
182 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val);
184 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val);
188 * i40iw_dpc - tasklet for aeq and ceq 0
189 * @data: iwarp device
191 static void i40iw_dpc(unsigned long data)
193 struct i40iw_device *iwdev = (struct i40iw_device *)data;
195 if (iwdev->msix_shared)
196 i40iw_process_ceq(iwdev, iwdev->ceqlist);
197 i40iw_process_aeq(iwdev);
198 i40iw_enable_intr(&iwdev->sc_dev, iwdev->iw_msixtbl[0].idx);
202 * i40iw_ceq_dpc - dpc handler for CEQ
203 * @data: data points to CEQ
205 static void i40iw_ceq_dpc(unsigned long data)
207 struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
208 struct i40iw_device *iwdev = iwceq->iwdev;
210 i40iw_process_ceq(iwdev, iwceq);
211 i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx);
215 * i40iw_irq_handler - interrupt handler for aeq and ceq0
216 * @irq: Interrupt request number
217 * @data: iwarp device
219 static irqreturn_t i40iw_irq_handler(int irq, void *data)
221 struct i40iw_device *iwdev = (struct i40iw_device *)data;
223 tasklet_schedule(&iwdev->dpc_tasklet);
228 * i40iw_destroy_cqp - destroy control qp
229 * @iwdev: iwarp device
230 * @create_done: 1 if cqp create poll was success
232 * Issue destroy cqp request and
233 * free the resources associated with the cqp
235 static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp)
237 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
238 struct i40iw_cqp *cqp = &iwdev->cqp;
241 dev->cqp_ops->cqp_destroy(dev->cqp);
243 i40iw_cleanup_pending_cqp_op(iwdev);
245 i40iw_free_dma_mem(dev->hw, &cqp->sq);
246 kfree(cqp->scratch_array);
247 iwdev->cqp.scratch_array = NULL;
249 kfree(cqp->cqp_requests);
250 cqp->cqp_requests = NULL;
254 * i40iw_disable_irqs - disable device interrupts
255 * @dev: hardware control device structure
256 * @msic_vec: msix vector to disable irq
257 * @dev_id: parameter to pass to free_irq (used during irq setup)
259 * The function is called when destroying aeq/ceq
261 static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
262 struct i40iw_msix_vector *msix_vec,
266 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
268 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0);
269 irq_set_affinity_hint(msix_vec->irq, NULL);
270 free_irq(msix_vec->irq, dev_id);
274 * i40iw_destroy_aeq - destroy aeq
275 * @iwdev: iwarp device
277 * Issue a destroy aeq request and
278 * free the resources associated with the aeq
279 * The function is called during driver unload
281 static void i40iw_destroy_aeq(struct i40iw_device *iwdev)
283 enum i40iw_status_code status = I40IW_ERR_NOT_READY;
284 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
285 struct i40iw_aeq *aeq = &iwdev->aeq;
287 if (!iwdev->msix_shared)
288 i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev);
292 if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1))
293 status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq);
295 i40iw_pr_err("destroy aeq failed %d\n", status);
298 i40iw_free_dma_mem(dev->hw, &aeq->mem);
302 * i40iw_destroy_ceq - destroy ceq
303 * @iwdev: iwarp device
304 * @iwceq: ceq to be destroyed
306 * Issue a destroy ceq request and
307 * free the resources associated with the ceq
309 static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
310 struct i40iw_ceq *iwceq)
312 enum i40iw_status_code status;
313 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
318 status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1);
320 i40iw_pr_err("ceq destroy command failed %d\n", status);
324 status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq);
326 i40iw_pr_err("ceq destroy completion failed %d\n", status);
328 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
332 * i40iw_dele_ceqs - destroy all ceq's
333 * @iwdev: iwarp device
335 * Go through all of the device ceq's and for each ceq
336 * disable the ceq interrupt and destroy the ceq
338 static void i40iw_dele_ceqs(struct i40iw_device *iwdev)
341 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
342 struct i40iw_ceq *iwceq = iwdev->ceqlist;
343 struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
345 if (iwdev->msix_shared) {
346 i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
347 i40iw_destroy_ceq(iwdev, iwceq);
352 for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) {
353 i40iw_disable_irq(dev, msix_vec, (void *)iwceq);
354 i40iw_destroy_ceq(iwdev, iwceq);
357 iwdev->sc_dev.ceq_valid = false;
361 * i40iw_destroy_ccq - destroy control cq
362 * @iwdev: iwarp device
364 * Issue destroy ccq request and
365 * free the resources associated with the ccq
367 static void i40iw_destroy_ccq(struct i40iw_device *iwdev)
369 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
370 struct i40iw_ccq *ccq = &iwdev->ccq;
371 enum i40iw_status_code status = 0;
374 status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true);
376 i40iw_pr_err("ccq destroy failed %d\n", status);
377 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
380 /* types of hmc objects */
381 static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = {
386 I40IW_HMC_IW_APBVT_ENTRY,
396 * i40iw_close_hmc_objects_type - delete hmc objects of a given type
397 * @iwdev: iwarp device
398 * @obj_type: the hmc object type to be deleted
399 * @is_pf: true if the function is PF otherwise false
400 * @reset: true if called before reset
402 static void i40iw_close_hmc_objects_type(struct i40iw_sc_dev *dev,
403 enum i40iw_hmc_rsrc_type obj_type,
404 struct i40iw_hmc_info *hmc_info,
408 struct i40iw_hmc_del_obj_info info;
410 memset(&info, 0, sizeof(info));
411 info.hmc_info = hmc_info;
412 info.rsrc_type = obj_type;
413 info.count = hmc_info->hmc_obj[obj_type].cnt;
415 if (dev->hmc_ops->del_hmc_object(dev, &info, reset))
416 i40iw_pr_err("del obj of type %d failed\n", obj_type);
420 * i40iw_del_hmc_objects - remove all device hmc objects
422 * @hmc_info: hmc_info to free
423 * @is_pf: true if hmc_info belongs to PF, not vf nor allocated
424 * by PF on behalf of VF
425 * @reset: true if called before reset
427 static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev,
428 struct i40iw_hmc_info *hmc_info,
434 for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++)
435 i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], hmc_info, is_pf, reset);
439 * i40iw_ceq_handler - interrupt handler for ceq
442 static irqreturn_t i40iw_ceq_handler(int irq, void *data)
444 struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
446 if (iwceq->irq != irq)
447 i40iw_pr_err("expected irq = %d received irq = %d\n", iwceq->irq, irq);
448 tasklet_schedule(&iwceq->dpc_tasklet);
453 * i40iw_create_hmc_obj_type - create hmc object of a given type
454 * @dev: hardware control device structure
455 * @info: information for the hmc object to create
457 static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev,
458 struct i40iw_hmc_create_obj_info *info)
460 return dev->hmc_ops->create_hmc_object(dev, info);
464 * i40iw_create_hmc_objs - create all hmc objects for the device
465 * @iwdev: iwarp device
466 * @is_pf: true if the function is PF otherwise false
468 * Create the device hmc objects and allocate hmc pages
469 * Return 0 if successful, otherwise clean up and return error
471 static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev,
474 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
475 struct i40iw_hmc_create_obj_info info;
476 enum i40iw_status_code status;
479 memset(&info, 0, sizeof(info));
480 info.hmc_info = dev->hmc_info;
482 info.entry_type = iwdev->sd_type;
483 for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) {
484 info.rsrc_type = iw_hmc_obj_types[i];
485 info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt;
487 status = i40iw_create_hmc_obj_type(dev, &info);
489 i40iw_pr_err("create obj type %d status = %d\n",
490 iw_hmc_obj_types[i], status);
495 return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
501 /* destroy the hmc objects of a given type */
502 i40iw_close_hmc_objects_type(dev,
512 * i40iw_obj_aligned_mem - get aligned memory from device allocated memory
513 * @iwdev: iwarp device
514 * @memptr: points to the memory addresses
515 * @size: size of memory needed
516 * @mask: mask for the aligned memory
518 * Get aligned memory of the requested size and
519 * update the memptr to point to the new aligned memory
520 * Return 0 if successful, otherwise return no memory error
522 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
523 struct i40iw_dma_mem *memptr,
527 unsigned long va, newva;
530 va = (unsigned long)iwdev->obj_next.va;
533 newva = ALIGN(va, (mask + 1));
535 memptr->va = (u8 *)va + extra;
536 memptr->pa = iwdev->obj_next.pa + extra;
538 if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
539 return I40IW_ERR_NO_MEMORY;
541 iwdev->obj_next.va = memptr->va + size;
542 iwdev->obj_next.pa = memptr->pa + size;
547 * i40iw_create_cqp - create control qp
548 * @iwdev: iwarp device
550 * Return 0, if the cqp and all the resources associated with it
551 * are successfully created, otherwise return error
553 static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
555 enum i40iw_status_code status;
556 u32 sqsize = I40IW_CQP_SW_SQSIZE_2048;
557 struct i40iw_dma_mem mem;
558 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
559 struct i40iw_cqp_init_info cqp_init_info;
560 struct i40iw_cqp *cqp = &iwdev->cqp;
561 u16 maj_err, min_err;
564 cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL);
565 if (!cqp->cqp_requests)
566 return I40IW_ERR_NO_MEMORY;
567 cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL);
568 if (!cqp->scratch_array) {
569 kfree(cqp->cqp_requests);
570 return I40IW_ERR_NO_MEMORY;
572 dev->cqp = &cqp->sc_cqp;
574 memset(&cqp_init_info, 0, sizeof(cqp_init_info));
575 status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq,
576 (sizeof(struct i40iw_cqp_sq_wqe) * sqsize),
577 I40IW_CQP_ALIGNMENT);
580 status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
581 I40IW_HOST_CTX_ALIGNMENT_MASK);
584 dev->cqp->host_ctx_pa = mem.pa;
585 dev->cqp->host_ctx = mem.va;
586 /* populate the cqp init info */
587 cqp_init_info.dev = dev;
588 cqp_init_info.sq_size = sqsize;
589 cqp_init_info.sq = cqp->sq.va;
590 cqp_init_info.sq_pa = cqp->sq.pa;
591 cqp_init_info.host_ctx_pa = mem.pa;
592 cqp_init_info.host_ctx = mem.va;
593 cqp_init_info.hmc_profile = iwdev->resource_profile;
594 cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs;
595 cqp_init_info.scratch_array = cqp->scratch_array;
596 status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info);
598 i40iw_pr_err("cqp init status %d\n", status);
601 status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err);
603 i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
604 status, maj_err, min_err);
607 spin_lock_init(&cqp->req_lock);
608 INIT_LIST_HEAD(&cqp->cqp_avail_reqs);
609 INIT_LIST_HEAD(&cqp->cqp_pending_reqs);
610 /* init the waitq of the cqp_requests and add them to the list */
611 for (i = 0; i < sqsize; i++) {
612 init_waitqueue_head(&cqp->cqp_requests[i].waitq);
613 list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs);
617 /* clean up the created resources */
618 i40iw_destroy_cqp(iwdev, false);
623 * i40iw_create_ccq - create control cq
624 * @iwdev: iwarp device
626 * Return 0, if the ccq and the resources associated with it
627 * are successfully created, otherwise return error
629 static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
631 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
632 struct i40iw_dma_mem mem;
633 enum i40iw_status_code status;
634 struct i40iw_ccq_init_info info;
635 struct i40iw_ccq *ccq = &iwdev->ccq;
637 memset(&info, 0, sizeof(info));
638 dev->ccq = &ccq->sc_cq;
641 ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area);
642 ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE;
643 status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq,
644 ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT);
647 status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
648 I40IW_SHADOWAREA_MASK);
651 ccq->sc_cq.back_cq = (void *)ccq;
652 /* populate the ccq init info */
653 info.cq_base = ccq->mem_cq.va;
654 info.cq_pa = ccq->mem_cq.pa;
655 info.num_elem = IW_CCQ_SIZE;
656 info.shadow_area = mem.va;
657 info.shadow_area_pa = mem.pa;
658 info.ceqe_mask = false;
659 info.ceq_id_valid = true;
660 info.shadow_read_threshold = 16;
661 status = dev->ccq_ops->ccq_init(dev->ccq, &info);
663 status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
666 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
671 * i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq
672 * @iwdev: iwarp device
673 * @msix_vec: interrupt vector information
674 * @iwceq: ceq associated with the vector
675 * @ceq_id: the id number of the iwceq
677 * Allocate interrupt resources and enable irq handling
678 * Return 0 if successful, otherwise return error
680 static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
681 struct i40iw_ceq *iwceq,
683 struct i40iw_msix_vector *msix_vec)
685 enum i40iw_status_code status;
687 if (iwdev->msix_shared && !ceq_id) {
688 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
689 status = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "AEQCEQ", iwdev);
691 tasklet_init(&iwceq->dpc_tasklet, i40iw_ceq_dpc, (unsigned long)iwceq);
692 status = request_irq(msix_vec->irq, i40iw_ceq_handler, 0, "CEQ", iwceq);
695 cpumask_clear(&msix_vec->mask);
696 cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
697 irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask);
700 i40iw_pr_err("ceq irq config fail\n");
701 return I40IW_ERR_CONFIG;
703 msix_vec->ceq_id = ceq_id;
709 * i40iw_create_ceq - create completion event queue
710 * @iwdev: iwarp device
711 * @iwceq: pointer to the ceq resources to be created
712 * @ceq_id: the id number of the iwceq
714 * Return 0, if the ceq and the resources associated with it
715 * are successfully created, otherwise return error
717 static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev,
718 struct i40iw_ceq *iwceq,
721 enum i40iw_status_code status;
722 struct i40iw_ceq_init_info info;
723 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
726 memset(&info, 0, sizeof(info));
727 info.ceq_id = ceq_id;
728 iwceq->iwdev = iwdev;
729 iwceq->mem.size = sizeof(struct i40iw_ceqe) *
730 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
731 status = i40iw_allocate_dma_mem(dev->hw, &iwceq->mem, iwceq->mem.size,
732 I40IW_CEQ_ALIGNMENT);
735 info.ceq_id = ceq_id;
736 info.ceqe_base = iwceq->mem.va;
737 info.ceqe_pa = iwceq->mem.pa;
739 info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
740 iwceq->sc_ceq.ceq_id = ceq_id;
742 scratch = (uintptr_t)&iwdev->cqp.sc_cqp;
743 status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info);
745 status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch);
749 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
753 void i40iw_request_reset(struct i40iw_device *iwdev)
755 struct i40e_info *ldev = iwdev->ldev;
757 ldev->ops->request_reset(ldev, iwdev->client, 1);
761 * i40iw_setup_ceqs - manage the device ceq's and their interrupt resources
762 * @iwdev: iwarp device
763 * @ldev: i40e lan device
765 * Allocate a list for all device completion event queues
766 * Create the ceq's and configure their msix interrupt vectors
767 * Return 0, if at least one ceq is successfully set up, otherwise return error
769 static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev,
770 struct i40e_info *ldev)
774 struct i40iw_ceq *iwceq;
775 struct i40iw_msix_vector *msix_vec;
776 enum i40iw_status_code status = 0;
779 if (ldev && ldev->ops && ldev->ops->setup_qvlist) {
780 status = ldev->ops->setup_qvlist(ldev, &i40iw_client,
785 status = I40IW_ERR_BAD_PTR;
789 num_ceqs = min(iwdev->msix_count, iwdev->sc_dev.hmc_fpm_misc.max_ceqs);
790 iwdev->ceqlist = kcalloc(num_ceqs, sizeof(*iwdev->ceqlist), GFP_KERNEL);
791 if (!iwdev->ceqlist) {
792 status = I40IW_ERR_NO_MEMORY;
795 i = (iwdev->msix_shared) ? 0 : 1;
796 for (ceq_id = 0; i < num_ceqs; i++, ceq_id++) {
797 iwceq = &iwdev->ceqlist[ceq_id];
798 status = i40iw_create_ceq(iwdev, iwceq, ceq_id);
800 i40iw_pr_err("create ceq status = %d\n", status);
804 msix_vec = &iwdev->iw_msixtbl[i];
805 iwceq->irq = msix_vec->irq;
806 iwceq->msix_idx = msix_vec->idx;
807 status = i40iw_configure_ceq_vector(iwdev, iwceq, ceq_id, msix_vec);
809 i40iw_destroy_ceq(iwdev, iwceq);
812 i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
816 if (status && !iwdev->ceqs_count) {
817 kfree(iwdev->ceqlist);
818 iwdev->ceqlist = NULL;
821 iwdev->sc_dev.ceq_valid = true;
828 * i40iw_configure_aeq_vector - set up the msix vector for aeq
829 * @iwdev: iwarp device
831 * Allocate interrupt resources and enable irq handling
832 * Return 0 if successful, otherwise return error
834 static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
836 struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
839 if (!iwdev->msix_shared) {
840 tasklet_init(&iwdev->dpc_tasklet, i40iw_dpc, (unsigned long)iwdev);
841 ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev);
844 i40iw_pr_err("aeq irq config fail\n");
845 return I40IW_ERR_CONFIG;
852 * i40iw_create_aeq - create async event queue
853 * @iwdev: iwarp device
855 * Return 0, if the aeq and the resources associated with it
856 * are successfully created, otherwise return error
858 static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
860 enum i40iw_status_code status;
861 struct i40iw_aeq_init_info info;
862 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
863 struct i40iw_aeq *aeq = &iwdev->aeq;
867 aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt +
868 iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
869 memset(&info, 0, sizeof(info));
870 aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size;
871 status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size,
872 I40IW_AEQ_ALIGNMENT);
876 info.aeqe_base = aeq->mem.va;
877 info.aeq_elem_pa = aeq->mem.pa;
878 info.elem_cnt = aeq_size;
880 status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
883 status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
885 status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
888 i40iw_free_dma_mem(dev->hw, &aeq->mem);
893 * i40iw_setup_aeq - set up the device aeq
894 * @iwdev: iwarp device
896 * Create the aeq and configure its msix interrupt vector
897 * Return 0 if successful, otherwise return error
899 static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
901 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
902 enum i40iw_status_code status;
904 status = i40iw_create_aeq(iwdev);
908 status = i40iw_configure_aeq_vector(iwdev);
910 i40iw_destroy_aeq(iwdev);
914 if (!iwdev->msix_shared)
915 i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
920 * i40iw_initialize_ilq - create iwarp local queue for cm
921 * @iwdev: iwarp device
923 * Return 0 if successful, otherwise return error
925 static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
927 struct i40iw_puda_rsrc_info info;
928 enum i40iw_status_code status;
930 memset(&info, 0, sizeof(info));
931 info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
938 info.buf_size = 1024;
939 info.tx_buf_cnt = 16384;
940 info.receive = i40iw_receive_ilq;
941 info.xmit_complete = i40iw_free_sqbuf;
942 status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
944 i40iw_pr_err("ilq create fail\n");
949 * i40iw_initialize_ieq - create iwarp exception queue
950 * @iwdev: iwarp device
952 * Return 0 if successful, otherwise return error
954 static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
956 struct i40iw_puda_rsrc_info info;
957 enum i40iw_status_code status;
959 memset(&info, 0, sizeof(info));
960 info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
962 info.qp_id = iwdev->vsi.exception_lan_queue;
967 info.buf_size = iwdev->vsi.mtu + VLAN_ETH_HLEN;
968 info.tx_buf_cnt = 4096;
969 status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
971 i40iw_pr_err("ieq create fail\n");
976 * i40iw_reinitialize_ieq - destroy and re-create ieq
979 void i40iw_reinitialize_ieq(struct i40iw_sc_dev *dev)
981 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
983 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, false);
984 if (i40iw_initialize_ieq(iwdev)) {
986 i40iw_request_reset(iwdev);
991 * i40iw_hmc_setup - create hmc objects for the device
992 * @iwdev: iwarp device
994 * Set up the device private memory space for the number and size of
995 * the hmc objects and create the objects
996 * Return 0 if successful, otherwise return error
998 static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
1000 enum i40iw_status_code status;
1002 iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
1003 status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
1006 status = i40iw_create_hmc_objs(iwdev, true);
1009 iwdev->init_state = HMC_OBJS_CREATED;
1015 * i40iw_del_init_mem - deallocate memory resources
1016 * @iwdev: iwarp device
1018 static void i40iw_del_init_mem(struct i40iw_device *iwdev)
1020 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1022 i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem);
1023 kfree(dev->hmc_info->sd_table.sd_entry);
1024 dev->hmc_info->sd_table.sd_entry = NULL;
1025 kfree(iwdev->mem_resources);
1026 iwdev->mem_resources = NULL;
1027 kfree(iwdev->ceqlist);
1028 iwdev->ceqlist = NULL;
1029 kfree(iwdev->iw_msixtbl);
1030 iwdev->iw_msixtbl = NULL;
1031 kfree(iwdev->hmc_info_mem);
1032 iwdev->hmc_info_mem = NULL;
1036 * i40iw_del_macip_entry - remove a mac ip address entry from the hw table
1037 * @iwdev: iwarp device
1038 * @idx: the index of the mac ip address to delete
1040 static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
1042 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1043 struct i40iw_cqp_request *cqp_request;
1044 struct cqp_commands_info *cqp_info;
1045 enum i40iw_status_code status = 0;
1047 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1049 i40iw_pr_err("cqp_request memory failed\n");
1052 cqp_info = &cqp_request->info;
1053 cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY;
1054 cqp_info->post_sq = 1;
1055 cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1056 cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1057 cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx;
1058 cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0;
1059 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1061 i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
1065 * i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table
1066 * @iwdev: iwarp device
1067 * @mac_addr: pointer to mac address
1068 * @idx: the index of the mac ip address to add
1070 static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
1074 struct i40iw_local_mac_ipaddr_entry_info *info;
1075 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1076 struct i40iw_cqp_request *cqp_request;
1077 struct cqp_commands_info *cqp_info;
1078 enum i40iw_status_code status = 0;
1080 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1082 i40iw_pr_err("cqp_request memory failed\n");
1083 return I40IW_ERR_NO_MEMORY;
1086 cqp_info = &cqp_request->info;
1088 cqp_info->post_sq = 1;
1089 info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info;
1090 ether_addr_copy(info->mac_addr, mac_addr);
1091 info->entry_idx = idx;
1092 cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1093 cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY;
1094 cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1095 cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1096 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1098 i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
1103 * i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry
1104 * @iwdev: iwarp device
1105 * @mac_ip_tbl_idx: the index of the new mac ip address
1107 * Allocate a mac ip address entry and update the mac_ip_tbl_idx
1108 * to hold the index of the newly created mac ip address
1109 * Return 0 if successful, otherwise return error
1111 static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
1112 u16 *mac_ip_tbl_idx)
1114 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1115 struct i40iw_cqp_request *cqp_request;
1116 struct cqp_commands_info *cqp_info;
1117 enum i40iw_status_code status = 0;
1119 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1121 i40iw_pr_err("cqp_request memory failed\n");
1122 return I40IW_ERR_NO_MEMORY;
1125 /* increment refcount, because we need the cqp request ret value */
1126 atomic_inc(&cqp_request->refcount);
1128 cqp_info = &cqp_request->info;
1129 cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY;
1130 cqp_info->post_sq = 1;
1131 cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
1132 cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
1133 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1135 *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
1137 i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail");
1138 /* decrement refcount and free the cqp request, if no longer used */
1139 i40iw_put_cqp_request(iwcqp, cqp_request);
1144 * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
1145 * @iwdev: iwarp device
1146 * @macaddr: pointer to mac address
1148 * Allocate a mac ip address entry and add it to the hw table
1149 * Return 0 if successful, otherwise return error
1151 static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
1154 enum i40iw_status_code status;
1156 status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
1158 status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
1159 (u8)iwdev->mac_ip_table_idx);
1161 i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1167 * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
1168 * @iwdev: iwarp device
1170 static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
1172 struct net_device *ip_dev;
1173 struct inet6_dev *idev;
1174 struct inet6_ifaddr *ifp, *tmp;
1175 u32 local_ipaddr6[4];
1178 for_each_netdev_rcu(&init_net, ip_dev) {
1179 if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) &&
1180 (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
1181 (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
1182 idev = __in6_dev_get(ip_dev);
1184 i40iw_pr_err("ipv6 inet device not found\n");
1187 list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
1188 i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr,
1189 rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr);
1190 i40iw_copy_ip_ntohl(local_ipaddr6,
1191 ifp->addr.in6_u.u6_addr32);
1192 i40iw_manage_arp_cache(iwdev,
1204 * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
1205 * @iwdev: iwarp device
1207 static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
1209 struct net_device *dev;
1210 struct in_device *idev;
1211 bool got_lock = true;
1214 if (!rtnl_trylock())
1217 for_each_netdev(&init_net, dev) {
1218 if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) &&
1219 (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
1220 (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
1221 idev = in_dev_get(dev);
1223 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1224 "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
1225 rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
1227 ip_addr = ntohl(ifa->ifa_address);
1228 i40iw_manage_arp_cache(iwdev,
1243 * i40iw_add_mac_ip - add mac and ip addresses
1244 * @iwdev: iwarp device
1246 * Create and add a mac ip address entry to the hw table and
1247 * ipv4/ipv6 addresses to the arp cache
1248 * Return 0 if successful, otherwise return error
1250 static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
1252 struct net_device *netdev = iwdev->netdev;
1253 enum i40iw_status_code status;
1255 status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
1258 i40iw_add_ipv4_addr(iwdev);
1259 i40iw_add_ipv6_addr(iwdev);
1264 * i40iw_wait_pe_ready - Check if firmware is ready
1265 * @hw: provides access to registers
1267 static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
1276 statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
1277 i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
1278 statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
1279 i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
1280 statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
1281 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
1282 __LINE__, statuscpu1);
1283 statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
1284 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
1285 __LINE__, statuscpu2);
1286 if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
1287 break; /* SUCCESS */
1290 } while (retrycount < 14);
1291 i40iw_wr32(hw, 0xb4040, 0x4C104C5);
1295 * i40iw_initialize_dev - initialize device
1296 * @iwdev: iwarp device
1297 * @ldev: lan device information
1299 * Allocate memory for the hmc objects and initialize iwdev
1300 * Return 0 if successful, otherwise clean up the resources
1303 static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
1304 struct i40e_info *ldev)
1306 enum i40iw_status_code status;
1307 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1308 struct i40iw_device_init_info info;
1309 struct i40iw_vsi_init_info vsi_info;
1310 struct i40iw_dma_mem mem;
1311 struct i40iw_l2params l2params;
1313 struct i40iw_vsi_stats_info stats_info;
1314 u16 last_qset = I40IW_NO_QSET;
1318 memset(&l2params, 0, sizeof(l2params));
1319 memset(&info, 0, sizeof(info));
1320 size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
1321 (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
1322 iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
1323 if (!iwdev->hmc_info_mem)
1324 return I40IW_ERR_NO_MEMORY;
1326 iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
1327 dev->hmc_info = &iwdev->hw.hmc;
1328 dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
1329 status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
1330 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1333 info.fpm_query_buf_pa = mem.pa;
1334 info.fpm_query_buf = mem.va;
1335 status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
1336 I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
1339 info.fpm_commit_buf_pa = mem.pa;
1340 info.fpm_commit_buf = mem.va;
1341 info.hmc_fn_id = ldev->fid;
1342 info.is_pf = (ldev->ftype) ? false : true;
1343 info.bar0 = ldev->hw_addr;
1344 info.hw = &iwdev->hw;
1345 info.debug_mask = debug;
1347 (ldev->params.mtu) ? ldev->params.mtu : I40IW_DEFAULT_MTU;
1348 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
1349 qset = ldev->params.qos.prio_qos[i].qs_handle;
1350 l2params.qs_handle_list[i] = qset;
1351 if (last_qset == I40IW_NO_QSET)
1353 else if ((qset != last_qset) && (qset != I40IW_NO_QSET))
1356 i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb);
1357 info.vchnl_send = i40iw_virtchnl_send;
1358 status = i40iw_device_init(&iwdev->sc_dev, &info);
1362 memset(&vsi_info, 0, sizeof(vsi_info));
1363 vsi_info.dev = &iwdev->sc_dev;
1364 vsi_info.back_vsi = (void *)iwdev;
1365 vsi_info.params = &l2params;
1366 vsi_info.exception_lan_queue = 1;
1367 i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info);
1370 memset(&stats_info, 0, sizeof(stats_info));
1371 stats_info.fcn_id = ldev->fid;
1372 stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL);
1373 if (!stats_info.pestat) {
1374 status = I40IW_ERR_NO_MEMORY;
1377 stats_info.stats_initialize = true;
1378 if (stats_info.pestat)
1379 i40iw_vsi_stats_init(&iwdev->vsi, &stats_info);
1383 kfree(iwdev->hmc_info_mem);
1384 iwdev->hmc_info_mem = NULL;
1389 * i40iw_register_notifiers - register tcp ip notifiers
1391 static void i40iw_register_notifiers(void)
1393 register_inetaddr_notifier(&i40iw_inetaddr_notifier);
1394 register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1395 register_netevent_notifier(&i40iw_net_notifier);
1396 register_netdevice_notifier(&i40iw_netdevice_notifier);
1400 * i40iw_unregister_notifiers - unregister tcp ip notifiers
1403 static void i40iw_unregister_notifiers(void)
1405 unregister_netevent_notifier(&i40iw_net_notifier);
1406 unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
1407 unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1408 unregister_netdevice_notifier(&i40iw_netdevice_notifier);
1412 * i40iw_save_msix_info - copy msix vector information to iwarp device
1413 * @iwdev: iwarp device
1414 * @ldev: lan device information
1416 * Allocate iwdev msix table and copy the ldev msix info to the table
1417 * Return 0 if successful, otherwise return error
1419 static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
1420 struct i40e_info *ldev)
1422 struct i40e_qvlist_info *iw_qvlist;
1423 struct i40e_qv_info *iw_qvinfo;
1428 if (!ldev->msix_count) {
1429 i40iw_pr_err("No MSI-X vectors\n");
1430 return I40IW_ERR_CONFIG;
1433 iwdev->msix_count = ldev->msix_count;
1435 size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
1436 size += sizeof(struct i40e_qvlist_info);
1437 size += sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
1438 iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
1440 if (!iwdev->iw_msixtbl)
1441 return I40IW_ERR_NO_MEMORY;
1442 iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
1443 iw_qvlist = iwdev->iw_qvlist;
1444 iw_qvinfo = iw_qvlist->qv_info;
1445 iw_qvlist->num_vectors = iwdev->msix_count;
1446 if (iwdev->msix_count <= num_online_cpus())
1447 iwdev->msix_shared = true;
1448 for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
1449 iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
1450 iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
1451 iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx;
1453 iw_qvinfo->aeq_idx = 0;
1454 if (iwdev->msix_shared)
1455 iw_qvinfo->ceq_idx = ceq_idx++;
1457 iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
1459 iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
1460 iw_qvinfo->ceq_idx = ceq_idx++;
1462 iw_qvinfo->itr_idx = 3;
1463 iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
1469 * i40iw_deinit_device - clean up the device resources
1470 * @iwdev: iwarp device
1472 * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
1473 * destroy the device queues and free the pble and the hmc objects
1475 static void i40iw_deinit_device(struct i40iw_device *iwdev)
1477 struct i40e_info *ldev = iwdev->ldev;
1479 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1481 i40iw_pr_info("state = %d\n", iwdev->init_state);
1482 if (iwdev->param_wq)
1483 destroy_workqueue(iwdev->param_wq);
1485 switch (iwdev->init_state) {
1486 case RDMA_DEV_REGISTERED:
1487 iwdev->iw_status = 0;
1488 i40iw_port_ibevent(iwdev);
1489 i40iw_destroy_rdma_device(iwdev->iwibdev);
1491 case IP_ADDR_REGISTERED:
1493 i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1496 case PBLE_CHUNK_MEM:
1497 i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
1500 i40iw_dele_ceqs(iwdev);
1503 i40iw_destroy_aeq(iwdev);
1506 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, iwdev->reset);
1509 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, iwdev->reset);
1512 i40iw_destroy_ccq(iwdev);
1514 case HMC_OBJS_CREATED:
1515 i40iw_del_hmc_objects(dev, dev->hmc_info, true, iwdev->reset);
1518 i40iw_destroy_cqp(iwdev, true);
1521 i40iw_cleanup_cm_core(&iwdev->cm_core);
1522 if (iwdev->vsi.pestat) {
1523 i40iw_vsi_stats_free(&iwdev->vsi);
1524 kfree(iwdev->vsi.pestat);
1526 i40iw_del_init_mem(iwdev);
1531 i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
1535 i40iw_del_handler(i40iw_find_i40e_handler(ldev));
1540 * i40iw_setup_init_state - set up the initial device struct
1541 * @hdl: handler for iwarp device - one per instance
1542 * @ldev: lan device information
1543 * @client: iwarp client information, provided during registration
1545 * Initialize the iwarp device and its hdl information
1546 * using the ldev and client information
1547 * Return 0 if successful, otherwise return error
1549 static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
1550 struct i40e_info *ldev,
1551 struct i40e_client *client)
1553 struct i40iw_device *iwdev = &hdl->device;
1554 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1555 enum i40iw_status_code status;
1557 memcpy(&hdl->ldev, ldev, sizeof(*ldev));
1559 iwdev->mpa_version = mpa_version;
1560 iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
1561 (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
1562 I40IW_HMC_PROFILE_DEFAULT;
1563 iwdev->max_rdma_vfs =
1564 (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ? max_rdma_vfs : 0;
1565 iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
1566 iwdev->netdev = ldev->netdev;
1567 hdl->client = client;
1569 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
1571 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
1573 status = i40iw_save_msix_info(iwdev, ldev);
1576 iwdev->hw.dev_context = (void *)ldev->pcidev;
1577 iwdev->hw.hw_addr = ldev->hw_addr;
1578 status = i40iw_allocate_dma_mem(&iwdev->hw,
1579 &iwdev->obj_mem, 8192, 4096);
1582 iwdev->obj_next = iwdev->obj_mem;
1584 init_waitqueue_head(&iwdev->vchnl_waitq);
1585 init_waitqueue_head(&dev->vf_reqs);
1586 init_waitqueue_head(&iwdev->close_wq);
1588 status = i40iw_initialize_dev(iwdev, ldev);
1591 kfree(iwdev->iw_msixtbl);
1592 i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
1593 iwdev->iw_msixtbl = NULL;
1599 * i40iw_get_used_rsrc - determine resources used internally
1600 * @iwdev: iwarp device
1602 * Called after internal allocations
1604 static void i40iw_get_used_rsrc(struct i40iw_device *iwdev)
1606 iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0);
1607 iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0);
1608 iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0);
1609 iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0);
1613 * i40iw_open - client interface operation open for iwarp/uda device
1614 * @ldev: lan device information
1615 * @client: iwarp client information, provided during registration
1617 * Called by the lan driver during the processing of client register
1618 * Create device resources, set up queues, pble and hmc objects and
1619 * register the device with the ib verbs interface
1620 * Return 0 if successful, otherwise return error
1622 static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
1624 struct i40iw_device *iwdev;
1625 struct i40iw_sc_dev *dev;
1626 enum i40iw_status_code status;
1627 struct i40iw_handler *hdl;
1629 hdl = i40iw_find_netdev(ldev->netdev);
1633 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
1636 iwdev = &hdl->device;
1638 dev = &iwdev->sc_dev;
1639 i40iw_setup_cm_core(iwdev);
1641 dev->back_dev = (void *)iwdev;
1642 iwdev->ldev = &hdl->ldev;
1643 iwdev->client = client;
1644 mutex_init(&iwdev->pbl_mutex);
1645 i40iw_add_handler(hdl);
1648 status = i40iw_setup_init_state(hdl, ldev, client);
1651 iwdev->init_state = INITIAL_STATE;
1653 i40iw_wait_pe_ready(dev->hw);
1654 status = i40iw_create_cqp(iwdev);
1657 iwdev->init_state = CQP_CREATED;
1658 status = i40iw_hmc_setup(iwdev);
1661 status = i40iw_create_ccq(iwdev);
1664 iwdev->init_state = CCQ_CREATED;
1665 status = i40iw_initialize_ilq(iwdev);
1668 iwdev->init_state = ILQ_CREATED;
1669 status = i40iw_initialize_ieq(iwdev);
1672 iwdev->init_state = IEQ_CREATED;
1673 status = i40iw_setup_aeq(iwdev);
1676 iwdev->init_state = AEQ_CREATED;
1677 status = i40iw_setup_ceqs(iwdev, ldev);
1680 iwdev->init_state = CEQ_CREATED;
1681 status = i40iw_initialize_hw_resources(iwdev);
1684 i40iw_get_used_rsrc(iwdev);
1685 dev->ccq_ops->ccq_arm(dev->ccq);
1686 status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
1689 iwdev->init_state = PBLE_CHUNK_MEM;
1690 iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM);
1691 status = i40iw_add_mac_ip(iwdev);
1694 iwdev->init_state = IP_ADDR_REGISTERED;
1695 if (i40iw_register_rdma_device(iwdev)) {
1696 i40iw_pr_err("register rdma device fail\n");
1700 iwdev->init_state = RDMA_DEV_REGISTERED;
1701 iwdev->iw_status = 1;
1702 i40iw_port_ibevent(iwdev);
1703 iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM);
1704 if(iwdev->param_wq == NULL)
1706 i40iw_pr_info("i40iw_open completed\n");
1710 i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
1711 i40iw_deinit_device(iwdev);
1716 * i40iw_l2params_worker - worker for l2 params change
1717 * @work: work pointer for l2 params
1719 static void i40iw_l2params_worker(struct work_struct *work)
1721 struct l2params_work *dwork =
1722 container_of(work, struct l2params_work, work);
1723 struct i40iw_device *iwdev = dwork->iwdev;
1725 i40iw_change_l2params(&iwdev->vsi, &dwork->l2params);
1726 atomic_dec(&iwdev->params_busy);
1731 * i40iw_l2param_change - handle qs handles for qos and mss change
1732 * @ldev: lan device information
1733 * @client: client for paramater change
1734 * @params: new parameters from L2
1736 static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client,
1737 struct i40e_params *params)
1739 struct i40iw_handler *hdl;
1740 struct i40iw_l2params *l2params;
1741 struct l2params_work *work;
1742 struct i40iw_device *iwdev;
1745 hdl = i40iw_find_i40e_handler(ldev);
1749 iwdev = &hdl->device;
1751 if (atomic_read(&iwdev->params_busy))
1755 work = kzalloc(sizeof(*work), GFP_KERNEL);
1759 atomic_inc(&iwdev->params_busy);
1761 work->iwdev = iwdev;
1762 l2params = &work->l2params;
1763 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++)
1764 l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle;
1766 l2params->mtu = (params->mtu) ? params->mtu : iwdev->vsi.mtu;
1768 INIT_WORK(&work->work, i40iw_l2params_worker);
1769 queue_work(iwdev->param_wq, &work->work);
1773 * i40iw_close - client interface operation close for iwarp/uda device
1774 * @ldev: lan device information
1775 * @client: client to close
1777 * Called by the lan driver during the processing of client unregister
1778 * Destroy and clean up the driver resources
1780 static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
1782 struct i40iw_device *iwdev;
1783 struct i40iw_handler *hdl;
1785 hdl = i40iw_find_i40e_handler(ldev);
1789 iwdev = &hdl->device;
1790 iwdev->closing = true;
1793 iwdev->reset = true;
1795 i40iw_cm_teardown_connections(iwdev, NULL, NULL, true);
1796 destroy_workqueue(iwdev->virtchnl_wq);
1797 i40iw_deinit_device(iwdev);
1801 * i40iw_vf_reset - process VF reset
1802 * @ldev: lan device information
1803 * @client: client interface instance
1804 * @vf_id: virtual function id
1806 * Called when a VF is reset by the PF
1807 * Destroy and clean up the VF resources
1809 static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
1811 struct i40iw_handler *hdl;
1812 struct i40iw_sc_dev *dev;
1813 struct i40iw_hmc_fcn_info hmc_fcn_info;
1814 struct i40iw_virt_mem vf_dev_mem;
1815 struct i40iw_vfdev *tmp_vfdev;
1817 unsigned long flags;
1818 struct i40iw_device *iwdev;
1820 hdl = i40iw_find_i40e_handler(ldev);
1824 dev = &hdl->device.sc_dev;
1825 iwdev = (struct i40iw_device *)dev->back_dev;
1827 for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
1828 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
1830 /* free all resources allocated on behalf of vf */
1831 tmp_vfdev = dev->vf_dev[i];
1832 spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags);
1833 dev->vf_dev[i] = NULL;
1834 spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags);
1835 i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
1836 /* remove vf hmc function */
1837 memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
1838 hmc_fcn_info.vf_id = vf_id;
1839 hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
1840 hmc_fcn_info.free_fcn = true;
1841 i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
1843 vf_dev_mem.va = tmp_vfdev;
1844 vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
1845 sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
1846 i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
1852 * i40iw_vf_enable - enable a number of VFs
1853 * @ldev: lan device information
1854 * @client: client interface instance
1855 * @num_vfs: number of VFs for the PF
1857 * Called when the number of VFs changes
1859 static void i40iw_vf_enable(struct i40e_info *ldev,
1860 struct i40e_client *client,
1863 struct i40iw_handler *hdl;
1865 hdl = i40iw_find_i40e_handler(ldev);
1869 if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
1870 hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
1872 hdl->device.max_enabled_vfs = num_vfs;
1876 * i40iw_vf_capable - check if VF capable
1877 * @ldev: lan device information
1878 * @client: client interface instance
1879 * @vf_id: virtual function id
1881 * Return 1 if a VF slot is available or if VF is already RDMA enabled
1882 * Return 0 otherwise
1884 static int i40iw_vf_capable(struct i40e_info *ldev,
1885 struct i40e_client *client,
1888 struct i40iw_handler *hdl;
1889 struct i40iw_sc_dev *dev;
1892 hdl = i40iw_find_i40e_handler(ldev);
1896 dev = &hdl->device.sc_dev;
1898 for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
1899 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
1907 * i40iw_virtchnl_receive - receive a message through the virtual channel
1908 * @ldev: lan device information
1909 * @client: client interface instance
1910 * @vf_id: virtual function id associated with the message
1911 * @msg: message buffer pointer
1912 * @len: length of the message
1914 * Invoke virtual channel receive operation for the given msg
1915 * Return 0 if successful, otherwise return error
1917 static int i40iw_virtchnl_receive(struct i40e_info *ldev,
1918 struct i40e_client *client,
1923 struct i40iw_handler *hdl;
1924 struct i40iw_sc_dev *dev;
1925 struct i40iw_device *iwdev;
1926 int ret_code = I40IW_NOT_SUPPORTED;
1929 return I40IW_ERR_PARAM;
1931 hdl = i40iw_find_i40e_handler(ldev);
1933 return I40IW_ERR_PARAM;
1935 dev = &hdl->device.sc_dev;
1936 iwdev = dev->back_dev;
1938 if (dev->vchnl_if.vchnl_recv) {
1939 ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
1941 atomic_dec(&iwdev->vchnl_msgs);
1942 wake_up(&iwdev->vchnl_waitq);
1949 * i40iw_vf_clear_to_send - wait to send virtual channel message
1950 * @dev: iwarp device *
1951 * Wait for until virtual channel is clear
1952 * before sending the next message
1954 * Returns false if error
1955 * Returns true if clear to send
1957 bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
1959 struct i40iw_device *iwdev;
1960 wait_queue_entry_t wait;
1962 iwdev = dev->back_dev;
1964 if (!wq_has_sleeper(&dev->vf_reqs) &&
1965 (atomic_read(&iwdev->vchnl_msgs) == 0))
1966 return true; /* virtual channel is clear */
1969 add_wait_queue_exclusive(&dev->vf_reqs, &wait);
1971 if (!wait_event_timeout(dev->vf_reqs,
1972 (atomic_read(&iwdev->vchnl_msgs) == 0),
1973 I40IW_VCHNL_EVENT_TIMEOUT))
1974 dev->vchnl_up = false;
1976 remove_wait_queue(&dev->vf_reqs, &wait);
1978 return dev->vchnl_up;
1982 * i40iw_virtchnl_send - send a message through the virtual channel
1983 * @dev: iwarp device
1984 * @vf_id: virtual function id associated with the message
1985 * @msg: virtual channel message buffer pointer
1986 * @len: length of the message
1988 * Invoke virtual channel send operation for the given msg
1989 * Return 0 if successful, otherwise return error
1991 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
1996 struct i40iw_device *iwdev;
1997 struct i40e_info *ldev;
1999 if (!dev || !dev->back_dev)
2000 return I40IW_ERR_BAD_PTR;
2002 iwdev = dev->back_dev;
2005 if (ldev && ldev->ops && ldev->ops->virtchnl_send)
2006 return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
2007 return I40IW_ERR_BAD_PTR;
2010 /* client interface functions */
2011 static const struct i40e_client_ops i40e_ops = {
2013 .close = i40iw_close,
2014 .l2_param_change = i40iw_l2param_change,
2015 .virtchnl_receive = i40iw_virtchnl_receive,
2016 .vf_reset = i40iw_vf_reset,
2017 .vf_enable = i40iw_vf_enable,
2018 .vf_capable = i40iw_vf_capable
2022 * i40iw_init_module - driver initialization function
2024 * First function to call when the driver is loaded
2025 * Register the driver as i40e client and port mapper client
2027 static int __init i40iw_init_module(void)
2031 memset(&i40iw_client, 0, sizeof(i40iw_client));
2032 i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
2033 i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
2034 i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
2035 i40iw_client.ops = &i40e_ops;
2036 memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
2037 i40iw_client.type = I40E_CLIENT_IWARP;
2038 spin_lock_init(&i40iw_handler_lock);
2039 ret = i40e_register_client(&i40iw_client);
2040 i40iw_register_notifiers();
2046 * i40iw_exit_module - driver exit clean up function
2048 * The function is called just before the driver is unloaded
2049 * Unregister the driver as i40e client and port mapper client
2051 static void __exit i40iw_exit_module(void)
2053 i40iw_unregister_notifiers();
2054 i40e_unregister_client(&i40iw_client);
2057 module_init(i40iw_init_module);
2058 module_exit(i40iw_exit_module);