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(push_mode, int, 0644);
59 MODULE_PARM_DESC(push_mode, "Low latency mode: 0=disabled (default), 1=enabled)");
62 module_param(debug, int, 0644);
63 MODULE_PARM_DESC(debug, "debug flags: 0=disabled (default), 0x7fffffff=all");
65 static int resource_profile;
66 module_param(resource_profile, int, 0644);
67 MODULE_PARM_DESC(resource_profile,
68 "Resource Profile: 0=no VF RDMA support (default), 1=Weighted VF, 2=Even Distribution");
70 static int max_rdma_vfs = 32;
71 module_param(max_rdma_vfs, int, 0644);
72 MODULE_PARM_DESC(max_rdma_vfs, "Maximum VF count: 0-32 32=default");
73 static int mpa_version = 2;
74 module_param(mpa_version, int, 0644);
75 MODULE_PARM_DESC(mpa_version, "MPA version to be used in MPA Req/Resp 1 or 2");
77 MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
78 MODULE_DESCRIPTION("Intel(R) Ethernet Connection X722 iWARP RDMA Driver");
79 MODULE_LICENSE("Dual BSD/GPL");
81 static struct i40e_client i40iw_client;
82 static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw";
84 static LIST_HEAD(i40iw_handlers);
85 static spinlock_t i40iw_handler_lock;
87 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
88 u32 vf_id, u8 *msg, u16 len);
90 static struct notifier_block i40iw_inetaddr_notifier = {
91 .notifier_call = i40iw_inetaddr_event
94 static struct notifier_block i40iw_inetaddr6_notifier = {
95 .notifier_call = i40iw_inet6addr_event
98 static struct notifier_block i40iw_net_notifier = {
99 .notifier_call = i40iw_net_event
102 static struct notifier_block i40iw_netdevice_notifier = {
103 .notifier_call = i40iw_netdevice_event
107 * i40iw_find_i40e_handler - find a handler given a client info
108 * @ldev: pointer to a client info
110 static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev)
112 struct i40iw_handler *hdl;
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);
122 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
127 * i40iw_find_netdev - find a handler given a netdev
128 * @netdev: pointer to net_device
130 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev)
132 struct i40iw_handler *hdl;
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);
142 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
147 * i40iw_add_handler - add a handler to the list
148 * @hdl: handler to be added to the handler list
150 static void i40iw_add_handler(struct i40iw_handler *hdl)
154 spin_lock_irqsave(&i40iw_handler_lock, flags);
155 list_add(&hdl->list, &i40iw_handlers);
156 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
160 * i40iw_del_handler - delete a handler from the list
161 * @hdl: handler to be deleted from the handler list
163 static int i40iw_del_handler(struct i40iw_handler *hdl)
167 spin_lock_irqsave(&i40iw_handler_lock, flags);
168 list_del(&hdl->list);
169 spin_unlock_irqrestore(&i40iw_handler_lock, flags);
174 * i40iw_enable_intr - set up device interrupts
175 * @dev: hardware control device structure
176 * @msix_id: id of the interrupt to be enabled
178 static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id)
182 val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
183 I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
184 (3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
186 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val);
188 i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val);
192 * i40iw_dpc - tasklet for aeq and ceq 0
193 * @data: iwarp device
195 static void i40iw_dpc(unsigned long data)
197 struct i40iw_device *iwdev = (struct i40iw_device *)data;
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);
206 * i40iw_ceq_dpc - dpc handler for CEQ
207 * @data: data points to CEQ
209 static void i40iw_ceq_dpc(unsigned long data)
211 struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
212 struct i40iw_device *iwdev = iwceq->iwdev;
214 i40iw_process_ceq(iwdev, iwceq);
215 i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx);
219 * i40iw_irq_handler - interrupt handler for aeq and ceq0
220 * @irq: Interrupt request number
221 * @data: iwarp device
223 static irqreturn_t i40iw_irq_handler(int irq, void *data)
225 struct i40iw_device *iwdev = (struct i40iw_device *)data;
227 tasklet_schedule(&iwdev->dpc_tasklet);
232 * i40iw_destroy_cqp - destroy control qp
233 * @iwdev: iwarp device
234 * @create_done: 1 if cqp create poll was success
236 * Issue destroy cqp request and
237 * free the resources associated with the cqp
239 static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp)
241 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
242 struct i40iw_cqp *cqp = &iwdev->cqp;
245 dev->cqp_ops->cqp_destroy(dev->cqp);
247 i40iw_cleanup_pending_cqp_op(iwdev);
249 i40iw_free_dma_mem(dev->hw, &cqp->sq);
250 kfree(cqp->scratch_array);
251 iwdev->cqp.scratch_array = NULL;
253 kfree(cqp->cqp_requests);
254 cqp->cqp_requests = NULL;
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)
263 * The function is called when destroying aeq/ceq
265 static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
266 struct i40iw_msix_vector *msix_vec,
270 i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
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);
278 * i40iw_destroy_aeq - destroy aeq
279 * @iwdev: iwarp device
281 * Issue a destroy aeq request and
282 * free the resources associated with the aeq
283 * The function is called during driver unload
285 static void i40iw_destroy_aeq(struct i40iw_device *iwdev)
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;
291 if (!iwdev->msix_shared)
292 i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev);
296 if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1))
297 status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq);
299 i40iw_pr_err("destroy aeq failed %d\n", status);
302 i40iw_free_dma_mem(dev->hw, &aeq->mem);
306 * i40iw_destroy_ceq - destroy ceq
307 * @iwdev: iwarp device
308 * @iwceq: ceq to be destroyed
310 * Issue a destroy ceq request and
311 * free the resources associated with the ceq
313 static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
314 struct i40iw_ceq *iwceq)
316 enum i40iw_status_code status;
317 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
322 status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1);
324 i40iw_pr_err("ceq destroy command failed %d\n", status);
328 status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq);
330 i40iw_pr_err("ceq destroy completion failed %d\n", status);
332 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
336 * i40iw_dele_ceqs - destroy all ceq's
337 * @iwdev: iwarp device
339 * Go through all of the device ceq's and for each ceq
340 * disable the ceq interrupt and destroy the ceq
342 static void i40iw_dele_ceqs(struct i40iw_device *iwdev)
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;
349 if (iwdev->msix_shared) {
350 i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
351 i40iw_destroy_ceq(iwdev, iwceq);
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);
361 iwdev->sc_dev.ceq_valid = false;
365 * i40iw_destroy_ccq - destroy control cq
366 * @iwdev: iwarp device
368 * Issue destroy ccq request and
369 * free the resources associated with the ccq
371 static void i40iw_destroy_ccq(struct i40iw_device *iwdev)
373 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
374 struct i40iw_ccq *ccq = &iwdev->ccq;
375 enum i40iw_status_code status = 0;
378 status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true);
380 i40iw_pr_err("ccq destroy failed %d\n", status);
381 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
384 /* types of hmc objects */
385 static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = {
390 I40IW_HMC_IW_APBVT_ENTRY,
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
406 static 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,
412 struct i40iw_hmc_del_obj_info info;
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;
419 if (dev->hmc_ops->del_hmc_object(dev, &info, reset))
420 i40iw_pr_err("del obj of type %d failed\n", obj_type);
424 * i40iw_del_hmc_objects - remove all device hmc objects
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
431 static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev,
432 struct i40iw_hmc_info *hmc_info,
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);
443 * i40iw_ceq_handler - interrupt handler for ceq
446 static irqreturn_t i40iw_ceq_handler(int irq, void *data)
448 struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
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);
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
461 static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev,
462 struct i40iw_hmc_create_obj_info *info)
464 return dev->hmc_ops->create_hmc_object(dev, info);
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
472 * Create the device hmc objects and allocate hmc pages
473 * Return 0 if successful, otherwise clean up and return error
475 static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev,
478 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
479 struct i40iw_hmc_create_obj_info info;
480 enum i40iw_status_code status;
483 memset(&info, 0, sizeof(info));
484 info.hmc_info = dev->hmc_info;
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;
491 status = i40iw_create_hmc_obj_type(dev, &info);
493 i40iw_pr_err("create obj type %d status = %d\n",
494 iw_hmc_obj_types[i], status);
499 return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
505 /* destroy the hmc objects of a given type */
506 i40iw_close_hmc_objects_type(dev,
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
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
526 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
527 struct i40iw_dma_mem *memptr,
531 unsigned long va, newva;
534 va = (unsigned long)iwdev->obj_next.va;
537 newva = ALIGN(va, (mask + 1));
539 memptr->va = (u8 *)va + extra;
540 memptr->pa = iwdev->obj_next.pa + extra;
542 if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
543 return I40IW_ERR_NO_MEMORY;
545 iwdev->obj_next.va = memptr->va + size;
546 iwdev->obj_next.pa = memptr->pa + size;
551 * i40iw_create_cqp - create control qp
552 * @iwdev: iwarp device
554 * Return 0, if the cqp and all the resources associated with it
555 * are successfully created, otherwise return error
557 static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
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;
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;
576 dev->cqp = &cqp->sc_cqp;
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);
584 status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
585 I40IW_HOST_CTX_ALIGNMENT_MASK);
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);
602 i40iw_pr_err("cqp init status %d\n", status);
605 status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err);
607 i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
608 status, maj_err, min_err);
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);
621 /* clean up the created resources */
622 i40iw_destroy_cqp(iwdev, false);
627 * i40iw_create_ccq - create control cq
628 * @iwdev: iwarp device
630 * Return 0, if the ccq and the resources associated with it
631 * are successfully created, otherwise return error
633 static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
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;
641 memset(&info, 0, sizeof(info));
642 dev->ccq = &ccq->sc_cq;
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);
651 status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
652 I40IW_SHADOWAREA_MASK);
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);
667 status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
670 i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
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
681 * Allocate interrupt resources and enable irq handling
682 * Return 0 if successful, otherwise return error
684 static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
685 struct i40iw_ceq *iwceq,
687 struct i40iw_msix_vector *msix_vec)
689 enum i40iw_status_code status;
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);
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);
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);
704 i40iw_pr_err("ceq irq config fail\n");
705 return I40IW_ERR_CONFIG;
707 msix_vec->ceq_id = ceq_id;
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
718 * Return 0, if the ceq and the resources associated with it
719 * are successfully created, otherwise return error
721 static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev,
722 struct i40iw_ceq *iwceq,
725 enum i40iw_status_code status;
726 struct i40iw_ceq_init_info info;
727 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
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);
739 info.ceq_id = ceq_id;
740 info.ceqe_base = iwceq->mem.va;
741 info.ceqe_pa = iwceq->mem.pa;
743 info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
744 iwceq->sc_ceq.ceq_id = ceq_id;
746 scratch = (uintptr_t)&iwdev->cqp.sc_cqp;
747 status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info);
749 status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch);
753 i40iw_free_dma_mem(dev->hw, &iwceq->mem);
757 void i40iw_request_reset(struct i40iw_device *iwdev)
759 struct i40e_info *ldev = iwdev->ldev;
761 ldev->ops->request_reset(ldev, iwdev->client, 1);
765 * i40iw_setup_ceqs - manage the device ceq's and their interrupt resources
766 * @iwdev: iwarp device
767 * @ldev: i40e lan device
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
773 static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev,
774 struct i40e_info *ldev)
778 struct i40iw_ceq *iwceq;
779 struct i40iw_msix_vector *msix_vec;
780 enum i40iw_status_code status = 0;
783 if (ldev && ldev->ops && ldev->ops->setup_qvlist) {
784 status = ldev->ops->setup_qvlist(ldev, &i40iw_client,
789 status = I40IW_ERR_BAD_PTR;
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;
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);
804 i40iw_pr_err("create ceq status = %d\n", status);
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);
813 i40iw_destroy_ceq(iwdev, iwceq);
816 i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
820 if (status && !iwdev->ceqs_count) {
821 kfree(iwdev->ceqlist);
822 iwdev->ceqlist = NULL;
825 iwdev->sc_dev.ceq_valid = true;
832 * i40iw_configure_aeq_vector - set up the msix vector for aeq
833 * @iwdev: iwarp device
835 * Allocate interrupt resources and enable irq handling
836 * Return 0 if successful, otherwise return error
838 static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
840 struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
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);
848 i40iw_pr_err("aeq irq config fail\n");
849 return I40IW_ERR_CONFIG;
856 * i40iw_create_aeq - create async event queue
857 * @iwdev: iwarp device
859 * Return 0, if the aeq and the resources associated with it
860 * are successfully created, otherwise return error
862 static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
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;
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);
880 info.aeqe_base = aeq->mem.va;
881 info.aeq_elem_pa = aeq->mem.pa;
882 info.elem_cnt = aeq_size;
884 status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
887 status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
889 status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
892 i40iw_free_dma_mem(dev->hw, &aeq->mem);
897 * i40iw_setup_aeq - set up the device aeq
898 * @iwdev: iwarp device
900 * Create the aeq and configure its msix interrupt vector
901 * Return 0 if successful, otherwise return error
903 static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
905 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
906 enum i40iw_status_code status;
908 status = i40iw_create_aeq(iwdev);
912 status = i40iw_configure_aeq_vector(iwdev);
914 i40iw_destroy_aeq(iwdev);
918 if (!iwdev->msix_shared)
919 i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
924 * i40iw_initialize_ilq - create iwarp local queue for cm
925 * @iwdev: iwarp device
927 * Return 0 if successful, otherwise return error
929 static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
931 struct i40iw_puda_rsrc_info info;
932 enum i40iw_status_code status;
934 memset(&info, 0, sizeof(info));
935 info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
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);
948 i40iw_pr_err("ilq create fail\n");
953 * i40iw_initialize_ieq - create iwarp exception queue
954 * @iwdev: iwarp device
956 * Return 0 if successful, otherwise return error
958 static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
960 struct i40iw_puda_rsrc_info info;
961 enum i40iw_status_code status;
963 memset(&info, 0, sizeof(info));
964 info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
966 info.qp_id = iwdev->vsi.exception_lan_queue;
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);
975 i40iw_pr_err("ieq create fail\n");
980 * i40iw_reinitialize_ieq - destroy and re-create ieq
983 void i40iw_reinitialize_ieq(struct i40iw_sc_dev *dev)
985 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
987 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, false);
988 if (i40iw_initialize_ieq(iwdev)) {
990 i40iw_request_reset(iwdev);
995 * i40iw_hmc_setup - create hmc objects for the device
996 * @iwdev: iwarp device
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
1002 static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
1004 enum i40iw_status_code status;
1006 iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
1007 status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
1010 status = i40iw_create_hmc_objs(iwdev, true);
1013 iwdev->init_state = HMC_OBJS_CREATED;
1019 * i40iw_del_init_mem - deallocate memory resources
1020 * @iwdev: iwarp device
1022 static void i40iw_del_init_mem(struct i40iw_device *iwdev)
1024 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
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;
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
1044 static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
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;
1051 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1053 i40iw_pr_err("cqp_request memory failed\n");
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);
1065 i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
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
1074 static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
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;
1084 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1086 i40iw_pr_err("cqp_request memory failed\n");
1087 return I40IW_ERR_NO_MEMORY;
1090 cqp_info = &cqp_request->info;
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);
1102 i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
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
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
1115 static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
1116 u16 *mac_ip_tbl_idx)
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;
1123 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1125 i40iw_pr_err("cqp_request memory failed\n");
1126 return I40IW_ERR_NO_MEMORY;
1129 /* increment refcount, because we need the cqp request ret value */
1130 atomic_inc(&cqp_request->refcount);
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);
1139 *mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
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);
1148 * i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
1149 * @iwdev: iwarp device
1150 * @macaddr: pointer to mac address
1152 * Allocate a mac ip address entry and add it to the hw table
1153 * Return 0 if successful, otherwise return error
1155 static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
1158 enum i40iw_status_code status;
1160 status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
1162 status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
1163 (u8)iwdev->mac_ip_table_idx);
1165 i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1171 * i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
1172 * @iwdev: iwarp device
1174 static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
1176 struct net_device *ip_dev;
1177 struct inet6_dev *idev;
1178 struct inet6_ifaddr *ifp, *tmp;
1179 u32 local_ipaddr6[4];
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);
1188 i40iw_pr_err("ipv6 inet device not found\n");
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,
1208 * i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
1209 * @iwdev: iwarp device
1211 static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
1213 struct net_device *dev;
1214 struct in_device *idev;
1215 bool got_lock = true;
1218 if (!rtnl_trylock())
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 idev = in_dev_get(dev);
1227 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1228 "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
1229 rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
1231 ip_addr = ntohl(ifa->ifa_address);
1232 i40iw_manage_arp_cache(iwdev,
1247 * i40iw_add_mac_ip - add mac and ip addresses
1248 * @iwdev: iwarp device
1250 * Create and add a mac ip address entry to the hw table and
1251 * ipv4/ipv6 addresses to the arp cache
1252 * Return 0 if successful, otherwise return error
1254 static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
1256 struct net_device *netdev = iwdev->netdev;
1257 enum i40iw_status_code status;
1259 status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
1262 i40iw_add_ipv4_addr(iwdev);
1263 i40iw_add_ipv6_addr(iwdev);
1268 * i40iw_wait_pe_ready - Check if firmware is ready
1269 * @hw: provides access to registers
1271 static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
1280 statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
1281 i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
1282 statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
1283 i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
1284 statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
1285 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
1286 __LINE__, statuscpu1);
1287 statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
1288 i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
1289 __LINE__, statuscpu2);
1290 if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
1291 break; /* SUCCESS */
1294 } while (retrycount < 14);
1295 i40iw_wr32(hw, 0xb4040, 0x4C104C5);
1299 * i40iw_initialize_dev - initialize device
1300 * @iwdev: iwarp device
1301 * @ldev: lan device information
1303 * Allocate memory for the hmc objects and initialize iwdev
1304 * Return 0 if successful, otherwise clean up the resources
1307 static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
1308 struct i40e_info *ldev)
1310 enum i40iw_status_code status;
1311 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1312 struct i40iw_device_init_info info;
1313 struct i40iw_vsi_init_info vsi_info;
1314 struct i40iw_dma_mem mem;
1315 struct i40iw_l2params l2params;
1317 struct i40iw_vsi_stats_info stats_info;
1318 u16 last_qset = I40IW_NO_QSET;
1322 memset(&l2params, 0, sizeof(l2params));
1323 memset(&info, 0, sizeof(info));
1324 size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
1325 (sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
1326 iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
1327 if (!iwdev->hmc_info_mem)
1328 return I40IW_ERR_NO_MEMORY;
1330 iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
1331 dev->hmc_info = &iwdev->hw.hmc;
1332 dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
1333 status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
1334 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1337 info.fpm_query_buf_pa = mem.pa;
1338 info.fpm_query_buf = mem.va;
1339 status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
1340 I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
1343 info.fpm_commit_buf_pa = mem.pa;
1344 info.fpm_commit_buf = mem.va;
1345 info.hmc_fn_id = ldev->fid;
1346 info.is_pf = (ldev->ftype) ? false : true;
1347 info.bar0 = ldev->hw_addr;
1348 info.hw = &iwdev->hw;
1349 info.debug_mask = debug;
1351 (ldev->params.mtu) ? ldev->params.mtu : I40IW_DEFAULT_MTU;
1352 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
1353 qset = ldev->params.qos.prio_qos[i].qs_handle;
1354 l2params.qs_handle_list[i] = qset;
1355 if (last_qset == I40IW_NO_QSET)
1357 else if ((qset != last_qset) && (qset != I40IW_NO_QSET))
1360 i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb);
1361 info.vchnl_send = i40iw_virtchnl_send;
1362 status = i40iw_device_init(&iwdev->sc_dev, &info);
1366 memset(&vsi_info, 0, sizeof(vsi_info));
1367 vsi_info.dev = &iwdev->sc_dev;
1368 vsi_info.back_vsi = (void *)iwdev;
1369 vsi_info.params = &l2params;
1370 vsi_info.exception_lan_queue = 1;
1371 i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info);
1374 memset(&stats_info, 0, sizeof(stats_info));
1375 stats_info.fcn_id = ldev->fid;
1376 stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL);
1377 if (!stats_info.pestat) {
1378 status = I40IW_ERR_NO_MEMORY;
1381 stats_info.stats_initialize = true;
1382 if (stats_info.pestat)
1383 i40iw_vsi_stats_init(&iwdev->vsi, &stats_info);
1387 kfree(iwdev->hmc_info_mem);
1388 iwdev->hmc_info_mem = NULL;
1393 * i40iw_register_notifiers - register tcp ip notifiers
1395 static void i40iw_register_notifiers(void)
1397 register_inetaddr_notifier(&i40iw_inetaddr_notifier);
1398 register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1399 register_netevent_notifier(&i40iw_net_notifier);
1400 register_netdevice_notifier(&i40iw_netdevice_notifier);
1404 * i40iw_unregister_notifiers - unregister tcp ip notifiers
1407 static void i40iw_unregister_notifiers(void)
1409 unregister_netevent_notifier(&i40iw_net_notifier);
1410 unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
1411 unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
1412 unregister_netdevice_notifier(&i40iw_netdevice_notifier);
1416 * i40iw_save_msix_info - copy msix vector information to iwarp device
1417 * @iwdev: iwarp device
1418 * @ldev: lan device information
1420 * Allocate iwdev msix table and copy the ldev msix info to the table
1421 * Return 0 if successful, otherwise return error
1423 static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
1424 struct i40e_info *ldev)
1426 struct i40e_qvlist_info *iw_qvlist;
1427 struct i40e_qv_info *iw_qvinfo;
1432 if (!ldev->msix_count) {
1433 i40iw_pr_err("No MSI-X vectors\n");
1434 return I40IW_ERR_CONFIG;
1437 iwdev->msix_count = ldev->msix_count;
1439 size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
1440 size += sizeof(struct i40e_qvlist_info);
1441 size += sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
1442 iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
1444 if (!iwdev->iw_msixtbl)
1445 return I40IW_ERR_NO_MEMORY;
1446 iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
1447 iw_qvlist = iwdev->iw_qvlist;
1448 iw_qvinfo = iw_qvlist->qv_info;
1449 iw_qvlist->num_vectors = iwdev->msix_count;
1450 if (iwdev->msix_count <= num_online_cpus())
1451 iwdev->msix_shared = true;
1452 for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
1453 iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
1454 iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
1455 iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx;
1457 iw_qvinfo->aeq_idx = 0;
1458 if (iwdev->msix_shared)
1459 iw_qvinfo->ceq_idx = ceq_idx++;
1461 iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
1463 iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
1464 iw_qvinfo->ceq_idx = ceq_idx++;
1466 iw_qvinfo->itr_idx = 3;
1467 iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
1473 * i40iw_deinit_device - clean up the device resources
1474 * @iwdev: iwarp device
1476 * Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
1477 * destroy the device queues and free the pble and the hmc objects
1479 static void i40iw_deinit_device(struct i40iw_device *iwdev)
1481 struct i40e_info *ldev = iwdev->ldev;
1483 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1485 i40iw_pr_info("state = %d\n", iwdev->init_state);
1486 if (iwdev->param_wq)
1487 destroy_workqueue(iwdev->param_wq);
1489 switch (iwdev->init_state) {
1490 case RDMA_DEV_REGISTERED:
1491 iwdev->iw_status = 0;
1492 i40iw_port_ibevent(iwdev);
1493 i40iw_destroy_rdma_device(iwdev->iwibdev);
1495 case IP_ADDR_REGISTERED:
1497 i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
1500 case PBLE_CHUNK_MEM:
1501 i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
1504 i40iw_dele_ceqs(iwdev);
1507 i40iw_destroy_aeq(iwdev);
1510 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, iwdev->reset);
1513 i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, iwdev->reset);
1516 i40iw_destroy_ccq(iwdev);
1518 case HMC_OBJS_CREATED:
1519 i40iw_del_hmc_objects(dev, dev->hmc_info, true, iwdev->reset);
1522 i40iw_destroy_cqp(iwdev, true);
1525 i40iw_cleanup_cm_core(&iwdev->cm_core);
1526 if (iwdev->vsi.pestat) {
1527 i40iw_vsi_stats_free(&iwdev->vsi);
1528 kfree(iwdev->vsi.pestat);
1530 i40iw_del_init_mem(iwdev);
1535 i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
1539 i40iw_del_handler(i40iw_find_i40e_handler(ldev));
1544 * i40iw_setup_init_state - set up the initial device struct
1545 * @hdl: handler for iwarp device - one per instance
1546 * @ldev: lan device information
1547 * @client: iwarp client information, provided during registration
1549 * Initialize the iwarp device and its hdl information
1550 * using the ldev and client information
1551 * Return 0 if successful, otherwise return error
1553 static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
1554 struct i40e_info *ldev,
1555 struct i40e_client *client)
1557 struct i40iw_device *iwdev = &hdl->device;
1558 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
1559 enum i40iw_status_code status;
1561 memcpy(&hdl->ldev, ldev, sizeof(*ldev));
1563 iwdev->mpa_version = mpa_version;
1564 iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
1565 (u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
1566 I40IW_HMC_PROFILE_DEFAULT;
1567 iwdev->max_rdma_vfs =
1568 (iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ? max_rdma_vfs : 0;
1569 iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
1570 iwdev->netdev = ldev->netdev;
1571 hdl->client = client;
1573 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
1575 iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
1577 status = i40iw_save_msix_info(iwdev, ldev);
1580 iwdev->hw.dev_context = (void *)ldev->pcidev;
1581 iwdev->hw.hw_addr = ldev->hw_addr;
1582 status = i40iw_allocate_dma_mem(&iwdev->hw,
1583 &iwdev->obj_mem, 8192, 4096);
1586 iwdev->obj_next = iwdev->obj_mem;
1587 iwdev->push_mode = push_mode;
1589 init_waitqueue_head(&iwdev->vchnl_waitq);
1590 init_waitqueue_head(&dev->vf_reqs);
1591 init_waitqueue_head(&iwdev->close_wq);
1593 status = i40iw_initialize_dev(iwdev, ldev);
1596 kfree(iwdev->iw_msixtbl);
1597 i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
1598 iwdev->iw_msixtbl = NULL;
1604 * i40iw_get_used_rsrc - determine resources used internally
1605 * @iwdev: iwarp device
1607 * Called after internal allocations
1609 static void i40iw_get_used_rsrc(struct i40iw_device *iwdev)
1611 iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0);
1612 iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0);
1613 iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0);
1614 iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0);
1618 * i40iw_open - client interface operation open for iwarp/uda device
1619 * @ldev: lan device information
1620 * @client: iwarp client information, provided during registration
1622 * Called by the lan driver during the processing of client register
1623 * Create device resources, set up queues, pble and hmc objects and
1624 * register the device with the ib verbs interface
1625 * Return 0 if successful, otherwise return error
1627 static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
1629 struct i40iw_device *iwdev;
1630 struct i40iw_sc_dev *dev;
1631 enum i40iw_status_code status;
1632 struct i40iw_handler *hdl;
1634 hdl = i40iw_find_netdev(ldev->netdev);
1638 hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
1641 iwdev = &hdl->device;
1643 dev = &iwdev->sc_dev;
1644 if (i40iw_setup_cm_core(iwdev)) {
1649 dev->back_dev = (void *)iwdev;
1650 iwdev->ldev = &hdl->ldev;
1651 iwdev->client = client;
1652 mutex_init(&iwdev->pbl_mutex);
1653 i40iw_add_handler(hdl);
1656 status = i40iw_setup_init_state(hdl, ldev, client);
1659 iwdev->init_state = INITIAL_STATE;
1661 i40iw_wait_pe_ready(dev->hw);
1662 status = i40iw_create_cqp(iwdev);
1665 iwdev->init_state = CQP_CREATED;
1666 status = i40iw_hmc_setup(iwdev);
1669 status = i40iw_create_ccq(iwdev);
1672 iwdev->init_state = CCQ_CREATED;
1673 status = i40iw_initialize_ilq(iwdev);
1676 iwdev->init_state = ILQ_CREATED;
1677 status = i40iw_initialize_ieq(iwdev);
1680 iwdev->init_state = IEQ_CREATED;
1681 status = i40iw_setup_aeq(iwdev);
1684 iwdev->init_state = AEQ_CREATED;
1685 status = i40iw_setup_ceqs(iwdev, ldev);
1688 iwdev->init_state = CEQ_CREATED;
1689 status = i40iw_initialize_hw_resources(iwdev);
1692 i40iw_get_used_rsrc(iwdev);
1693 dev->ccq_ops->ccq_arm(dev->ccq);
1694 status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
1697 iwdev->init_state = PBLE_CHUNK_MEM;
1698 iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM);
1699 status = i40iw_add_mac_ip(iwdev);
1702 iwdev->init_state = IP_ADDR_REGISTERED;
1703 if (i40iw_register_rdma_device(iwdev)) {
1704 i40iw_pr_err("register rdma device fail\n");
1708 iwdev->init_state = RDMA_DEV_REGISTERED;
1709 iwdev->iw_status = 1;
1710 i40iw_port_ibevent(iwdev);
1711 iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM);
1712 if(iwdev->param_wq == NULL)
1714 i40iw_pr_info("i40iw_open completed\n");
1718 i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
1719 i40iw_deinit_device(iwdev);
1724 * i40iw_l2params_worker - worker for l2 params change
1725 * @work: work pointer for l2 params
1727 static void i40iw_l2params_worker(struct work_struct *work)
1729 struct l2params_work *dwork =
1730 container_of(work, struct l2params_work, work);
1731 struct i40iw_device *iwdev = dwork->iwdev;
1733 i40iw_change_l2params(&iwdev->vsi, &dwork->l2params);
1734 atomic_dec(&iwdev->params_busy);
1739 * i40iw_l2param_change - handle qs handles for qos and mss change
1740 * @ldev: lan device information
1741 * @client: client for paramater change
1742 * @params: new parameters from L2
1744 static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client,
1745 struct i40e_params *params)
1747 struct i40iw_handler *hdl;
1748 struct i40iw_l2params *l2params;
1749 struct l2params_work *work;
1750 struct i40iw_device *iwdev;
1753 hdl = i40iw_find_i40e_handler(ldev);
1757 iwdev = &hdl->device;
1759 if (atomic_read(&iwdev->params_busy))
1763 work = kzalloc(sizeof(*work), GFP_KERNEL);
1767 atomic_inc(&iwdev->params_busy);
1769 work->iwdev = iwdev;
1770 l2params = &work->l2params;
1771 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++)
1772 l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle;
1774 l2params->mtu = (params->mtu) ? params->mtu : iwdev->vsi.mtu;
1776 INIT_WORK(&work->work, i40iw_l2params_worker);
1777 queue_work(iwdev->param_wq, &work->work);
1781 * i40iw_close - client interface operation close for iwarp/uda device
1782 * @ldev: lan device information
1783 * @client: client to close
1785 * Called by the lan driver during the processing of client unregister
1786 * Destroy and clean up the driver resources
1788 static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
1790 struct i40iw_device *iwdev;
1791 struct i40iw_handler *hdl;
1793 hdl = i40iw_find_i40e_handler(ldev);
1797 iwdev = &hdl->device;
1798 iwdev->closing = true;
1801 iwdev->reset = true;
1803 i40iw_cm_teardown_connections(iwdev, NULL, NULL, true);
1804 destroy_workqueue(iwdev->virtchnl_wq);
1805 i40iw_deinit_device(iwdev);
1809 * i40iw_vf_reset - process VF reset
1810 * @ldev: lan device information
1811 * @client: client interface instance
1812 * @vf_id: virtual function id
1814 * Called when a VF is reset by the PF
1815 * Destroy and clean up the VF resources
1817 static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
1819 struct i40iw_handler *hdl;
1820 struct i40iw_sc_dev *dev;
1821 struct i40iw_hmc_fcn_info hmc_fcn_info;
1822 struct i40iw_virt_mem vf_dev_mem;
1823 struct i40iw_vfdev *tmp_vfdev;
1825 unsigned long flags;
1826 struct i40iw_device *iwdev;
1828 hdl = i40iw_find_i40e_handler(ldev);
1832 dev = &hdl->device.sc_dev;
1833 iwdev = (struct i40iw_device *)dev->back_dev;
1835 for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
1836 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
1838 /* free all resources allocated on behalf of vf */
1839 tmp_vfdev = dev->vf_dev[i];
1840 spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags);
1841 dev->vf_dev[i] = NULL;
1842 spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags);
1843 i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
1844 /* remove vf hmc function */
1845 memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
1846 hmc_fcn_info.vf_id = vf_id;
1847 hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
1848 hmc_fcn_info.free_fcn = true;
1849 i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
1851 vf_dev_mem.va = tmp_vfdev;
1852 vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
1853 sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
1854 i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
1860 * i40iw_vf_enable - enable a number of VFs
1861 * @ldev: lan device information
1862 * @client: client interface instance
1863 * @num_vfs: number of VFs for the PF
1865 * Called when the number of VFs changes
1867 static void i40iw_vf_enable(struct i40e_info *ldev,
1868 struct i40e_client *client,
1871 struct i40iw_handler *hdl;
1873 hdl = i40iw_find_i40e_handler(ldev);
1877 if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
1878 hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
1880 hdl->device.max_enabled_vfs = num_vfs;
1884 * i40iw_vf_capable - check if VF capable
1885 * @ldev: lan device information
1886 * @client: client interface instance
1887 * @vf_id: virtual function id
1889 * Return 1 if a VF slot is available or if VF is already RDMA enabled
1890 * Return 0 otherwise
1892 static int i40iw_vf_capable(struct i40e_info *ldev,
1893 struct i40e_client *client,
1896 struct i40iw_handler *hdl;
1897 struct i40iw_sc_dev *dev;
1900 hdl = i40iw_find_i40e_handler(ldev);
1904 dev = &hdl->device.sc_dev;
1906 for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
1907 if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
1915 * i40iw_virtchnl_receive - receive a message through the virtual channel
1916 * @ldev: lan device information
1917 * @client: client interface instance
1918 * @vf_id: virtual function id associated with the message
1919 * @msg: message buffer pointer
1920 * @len: length of the message
1922 * Invoke virtual channel receive operation for the given msg
1923 * Return 0 if successful, otherwise return error
1925 static int i40iw_virtchnl_receive(struct i40e_info *ldev,
1926 struct i40e_client *client,
1931 struct i40iw_handler *hdl;
1932 struct i40iw_sc_dev *dev;
1933 struct i40iw_device *iwdev;
1934 int ret_code = I40IW_NOT_SUPPORTED;
1937 return I40IW_ERR_PARAM;
1939 hdl = i40iw_find_i40e_handler(ldev);
1941 return I40IW_ERR_PARAM;
1943 dev = &hdl->device.sc_dev;
1944 iwdev = dev->back_dev;
1946 if (dev->vchnl_if.vchnl_recv) {
1947 ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
1949 atomic_dec(&iwdev->vchnl_msgs);
1950 wake_up(&iwdev->vchnl_waitq);
1957 * i40iw_vf_clear_to_send - wait to send virtual channel message
1958 * @dev: iwarp device *
1959 * Wait for until virtual channel is clear
1960 * before sending the next message
1962 * Returns false if error
1963 * Returns true if clear to send
1965 bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
1967 struct i40iw_device *iwdev;
1968 wait_queue_entry_t wait;
1970 iwdev = dev->back_dev;
1972 if (!wq_has_sleeper(&dev->vf_reqs) &&
1973 (atomic_read(&iwdev->vchnl_msgs) == 0))
1974 return true; /* virtual channel is clear */
1977 add_wait_queue_exclusive(&dev->vf_reqs, &wait);
1979 if (!wait_event_timeout(dev->vf_reqs,
1980 (atomic_read(&iwdev->vchnl_msgs) == 0),
1981 I40IW_VCHNL_EVENT_TIMEOUT))
1982 dev->vchnl_up = false;
1984 remove_wait_queue(&dev->vf_reqs, &wait);
1986 return dev->vchnl_up;
1990 * i40iw_virtchnl_send - send a message through the virtual channel
1991 * @dev: iwarp device
1992 * @vf_id: virtual function id associated with the message
1993 * @msg: virtual channel message buffer pointer
1994 * @len: length of the message
1996 * Invoke virtual channel send operation for the given msg
1997 * Return 0 if successful, otherwise return error
1999 static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
2004 struct i40iw_device *iwdev;
2005 struct i40e_info *ldev;
2007 if (!dev || !dev->back_dev)
2008 return I40IW_ERR_BAD_PTR;
2010 iwdev = dev->back_dev;
2013 if (ldev && ldev->ops && ldev->ops->virtchnl_send)
2014 return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
2015 return I40IW_ERR_BAD_PTR;
2018 /* client interface functions */
2019 static const struct i40e_client_ops i40e_ops = {
2021 .close = i40iw_close,
2022 .l2_param_change = i40iw_l2param_change,
2023 .virtchnl_receive = i40iw_virtchnl_receive,
2024 .vf_reset = i40iw_vf_reset,
2025 .vf_enable = i40iw_vf_enable,
2026 .vf_capable = i40iw_vf_capable
2030 * i40iw_init_module - driver initialization function
2032 * First function to call when the driver is loaded
2033 * Register the driver as i40e client and port mapper client
2035 static int __init i40iw_init_module(void)
2039 memset(&i40iw_client, 0, sizeof(i40iw_client));
2040 i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
2041 i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
2042 i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
2043 i40iw_client.ops = &i40e_ops;
2044 memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
2045 i40iw_client.type = I40E_CLIENT_IWARP;
2046 spin_lock_init(&i40iw_handler_lock);
2047 ret = i40e_register_client(&i40iw_client);
2048 i40iw_register_notifiers();
2054 * i40iw_exit_module - driver exit clean up function
2056 * The function is called just before the driver is unloaded
2057 * Unregister the driver as i40e client and port mapper client
2059 static void __exit i40iw_exit_module(void)
2061 i40iw_unregister_notifiers();
2062 i40e_unregister_client(&i40iw_client);
2065 module_init(i40iw_init_module);
2066 module_exit(i40iw_exit_module);