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>
39 #include <linux/ethtool.h>
40 #include <linux/mii.h>
41 #include <linux/if_vlan.h>
42 #include <linux/crc32.h>
45 #include <linux/tcp.h>
46 #include <linux/init.h>
49 #include <asm/byteorder.h>
50 #include <net/netevent.h>
51 #include <net/neighbour.h>
55 * i40iw_arp_table - manage arp table
56 * @iwdev: iwarp device
57 * @ip_addr: ip address for device
58 * @mac_addr: mac address ptr
59 * @action: modify, delete or add
61 int i40iw_arp_table(struct i40iw_device *iwdev,
72 memset(ip, 0, sizeof(ip));
75 memcpy(ip, ip_addr, sizeof(ip));
78 for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
79 if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
83 if (arp_index != iwdev->arp_table_size)
87 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
88 iwdev->arp_table_size,
90 &iwdev->next_arp_index);
95 memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
96 ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
98 case I40IW_ARP_RESOLVE:
99 if (arp_index == iwdev->arp_table_size)
102 case I40IW_ARP_DELETE:
103 if (arp_index == iwdev->arp_table_size)
105 memset(iwdev->arp_table[arp_index].ip_addr, 0,
106 sizeof(iwdev->arp_table[arp_index].ip_addr));
107 eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
108 i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
117 * i40iw_wr32 - write 32 bits to hw register
118 * @hw: hardware information including registers
119 * @reg: register offset
120 * @value: vvalue to write to register
122 inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
124 writel(value, hw->hw_addr + reg);
128 * i40iw_rd32 - read a 32 bit hw register
129 * @hw: hardware information including registers
130 * @reg: register offset
132 * Return value of register content
134 inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
136 return readl(hw->hw_addr + reg);
140 * i40iw_inetaddr_event - system notifier for netdev events
142 * @event: event for notifier
145 int i40iw_inetaddr_event(struct notifier_block *notifier,
149 struct in_ifaddr *ifa = ptr;
150 struct net_device *event_netdev = ifa->ifa_dev->dev;
151 struct net_device *netdev;
152 struct net_device *upper_dev;
153 struct i40iw_device *iwdev;
154 struct i40iw_handler *hdl;
156 u32 action = I40IW_ARP_ADD;
158 hdl = i40iw_find_netdev(event_netdev);
162 iwdev = &hdl->device;
163 if (iwdev->init_state < INET_NOTIFIER)
166 netdev = iwdev->ldev->netdev;
167 upper_dev = netdev_master_upper_dev_get(netdev);
168 if (netdev != event_netdev)
172 local_ipaddr = ntohl(
173 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
175 local_ipaddr = ntohl(ifa->ifa_address);
178 action = I40IW_ARP_DELETE;
182 case NETDEV_CHANGEADDR:
183 i40iw_manage_arp_cache(iwdev,
188 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
189 (action == I40IW_ARP_ADD) ? true : false);
198 * i40iw_inet6addr_event - system notifier for ipv6 netdev events
200 * @event: event for notifier
203 int i40iw_inet6addr_event(struct notifier_block *notifier,
207 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
208 struct net_device *event_netdev = ifa->idev->dev;
209 struct net_device *netdev;
210 struct i40iw_device *iwdev;
211 struct i40iw_handler *hdl;
212 u32 local_ipaddr6[4];
213 u32 action = I40IW_ARP_ADD;
215 hdl = i40iw_find_netdev(event_netdev);
219 iwdev = &hdl->device;
220 if (iwdev->init_state < INET_NOTIFIER)
223 netdev = iwdev->ldev->netdev;
224 if (netdev != event_netdev)
227 i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
230 action = I40IW_ARP_DELETE;
234 case NETDEV_CHANGEADDR:
235 i40iw_manage_arp_cache(iwdev,
240 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
241 (action == I40IW_ARP_ADD) ? true : false);
250 * i40iw_net_event - system notifier for net events
252 * @event: event for notifier
255 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
257 struct neighbour *neigh = ptr;
258 struct i40iw_device *iwdev;
259 struct i40iw_handler *iwhdl;
264 case NETEVENT_NEIGH_UPDATE:
265 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
268 iwdev = &iwhdl->device;
269 if (iwdev->init_state < INET_NOTIFIER)
271 p = (__be32 *)neigh->primary_key;
272 i40iw_copy_ip_ntohl(local_ipaddr, p);
273 if (neigh->nud_state & NUD_VALID) {
274 i40iw_manage_arp_cache(iwdev,
281 i40iw_manage_arp_cache(iwdev,
295 * i40iw_get_cqp_request - get cqp struct
296 * @cqp: device cqp ptr
297 * @wait: cqp to be used in wait mode
299 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
301 struct i40iw_cqp_request *cqp_request = NULL;
304 spin_lock_irqsave(&cqp->req_lock, flags);
305 if (!list_empty(&cqp->cqp_avail_reqs)) {
306 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
307 struct i40iw_cqp_request, list);
308 list_del_init(&cqp_request->list);
310 spin_unlock_irqrestore(&cqp->req_lock, flags);
312 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
314 cqp_request->dynamic = true;
315 INIT_LIST_HEAD(&cqp_request->list);
316 init_waitqueue_head(&cqp_request->waitq);
320 i40iw_pr_err("CQP Request Fail: No Memory");
325 atomic_set(&cqp_request->refcount, 2);
326 cqp_request->waiting = true;
328 atomic_set(&cqp_request->refcount, 1);
334 * i40iw_free_cqp_request - free cqp request
336 * @cqp_request: to be put back in cqp list
338 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
342 if (cqp_request->dynamic) {
345 cqp_request->request_done = false;
346 cqp_request->callback_fcn = NULL;
347 cqp_request->waiting = false;
349 spin_lock_irqsave(&cqp->req_lock, flags);
350 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
351 spin_unlock_irqrestore(&cqp->req_lock, flags);
356 * i40iw_put_cqp_request - dec ref count and free if 0
358 * @cqp_request: to be put back in cqp list
360 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
361 struct i40iw_cqp_request *cqp_request)
363 if (atomic_dec_and_test(&cqp_request->refcount))
364 i40iw_free_cqp_request(cqp, cqp_request);
368 * i40iw_free_qp - callback after destroy cqp completes
369 * @cqp_request: cqp request for destroy qp
372 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
374 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
375 struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
376 struct i40iw_device *iwdev;
377 u32 qp_num = iwqp->ibqp.qp_num;
381 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
382 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
383 i40iw_rem_devusecount(iwdev);
387 * i40iw_wait_event - wait for completion
388 * @iwdev: iwarp device
389 * @cqp_request: cqp request to wait
391 static int i40iw_wait_event(struct i40iw_device *iwdev,
392 struct i40iw_cqp_request *cqp_request)
394 struct cqp_commands_info *info = &cqp_request->info;
395 struct i40iw_cqp *iwcqp = &iwdev->cqp;
396 bool cqp_error = false;
400 timeout_ret = wait_event_timeout(cqp_request->waitq,
401 cqp_request->request_done,
402 I40IW_EVENT_TIMEOUT);
404 i40iw_pr_err("error cqp command 0x%x timed out ret = %d\n",
405 info->cqp_cmd, timeout_ret);
409 i40iw_request_reset(iwdev);
413 cqp_error = cqp_request->compl_info.error;
415 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
416 info->cqp_cmd, cqp_request->compl_info.maj_err_code,
417 cqp_request->compl_info.min_err_code);
422 i40iw_put_cqp_request(iwcqp, cqp_request);
427 * i40iw_handle_cqp_op - process cqp command
428 * @iwdev: iwarp device
429 * @cqp_request: cqp request to process
431 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
432 struct i40iw_cqp_request
435 struct i40iw_sc_dev *dev = &iwdev->sc_dev;
436 enum i40iw_status_code status;
437 struct cqp_commands_info *info = &cqp_request->info;
441 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
442 return I40IW_ERR_CQP_COMPL_ERROR;
445 status = i40iw_process_cqp_cmd(dev, info);
447 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
448 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
451 if (cqp_request->waiting)
452 err_code = i40iw_wait_event(iwdev, cqp_request);
454 status = I40IW_ERR_CQP_COMPL_ERROR;
459 * i40iw_add_devusecount - add dev refcount
460 * @iwdev: dev for refcount
462 void i40iw_add_devusecount(struct i40iw_device *iwdev)
464 atomic64_inc(&iwdev->use_count);
468 * i40iw_rem_devusecount - decrement refcount for dev
471 void i40iw_rem_devusecount(struct i40iw_device *iwdev)
473 if (!atomic64_dec_and_test(&iwdev->use_count))
475 wake_up(&iwdev->close_wq);
479 * i40iw_add_pdusecount - add pd refcount
480 * @iwpd: pd for refcount
482 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
484 atomic_inc(&iwpd->usecount);
488 * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
489 * @iwpd: pd for refcount
490 * @iwdev: iwarp device
492 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
494 if (!atomic_dec_and_test(&iwpd->usecount))
496 i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
501 * i40iw_add_ref - add refcount for qp
504 void i40iw_add_ref(struct ib_qp *ibqp)
506 struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
508 atomic_inc(&iwqp->refcount);
512 * i40iw_rem_ref - rem refcount for qp and free if 0
515 void i40iw_rem_ref(struct ib_qp *ibqp)
517 struct i40iw_qp *iwqp;
518 enum i40iw_status_code status;
519 struct i40iw_cqp_request *cqp_request;
520 struct cqp_commands_info *cqp_info;
521 struct i40iw_device *iwdev;
525 iwqp = to_iwqp(ibqp);
527 spin_lock_irqsave(&iwdev->qptable_lock, flags);
528 if (!atomic_dec_and_test(&iwqp->refcount)) {
529 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
533 qp_num = iwqp->ibqp.qp_num;
534 iwdev->qp_table[qp_num] = NULL;
535 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
536 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
540 cqp_request->callback_fcn = i40iw_free_qp;
541 cqp_request->param = (void *)&iwqp->sc_qp;
542 cqp_info = &cqp_request->info;
543 cqp_info->cqp_cmd = OP_QP_DESTROY;
544 cqp_info->post_sq = 1;
545 cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
546 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
547 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
548 status = i40iw_handle_cqp_op(iwdev, cqp_request);
552 i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
553 i40iw_free_qp_resources(iwdev, iwqp, qp_num);
554 i40iw_rem_devusecount(iwdev);
558 * i40iw_get_qp - get qp address
559 * @device: iwarp device
562 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
564 struct i40iw_device *iwdev = to_iwdev(device);
566 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
569 return &iwdev->qp_table[qpn]->ibqp;
573 * i40iw_debug_buf - print debug msg and buffer is mask set
574 * @dev: hardware control device structure
575 * @mask: mask to compare if to print debug buffer
576 * @buf: points buffer addr
577 * @size: saize of buffer to print
579 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
580 enum i40iw_debug_flag mask,
587 if (!(dev->debug_mask & mask))
589 i40iw_debug(dev, mask, "%s\n", desc);
590 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
591 (unsigned long long)virt_to_phys(buf));
593 for (i = 0; i < size; i += 8)
594 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
598 * i40iw_get_hw_addr - return hw addr
599 * @par: points to shared dev
601 u8 __iomem *i40iw_get_hw_addr(void *par)
603 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
605 return dev->hw->hw_addr;
609 * i40iw_remove_head - return head entry and remove from list
610 * @list: list for entry
612 void *i40iw_remove_head(struct list_head *list)
614 struct list_head *entry;
616 if (list_empty(list))
619 entry = (void *)list->next;
621 return (void *)entry;
625 * i40iw_allocate_dma_mem - Memory alloc helper fn
626 * @hw: pointer to the HW structure
627 * @mem: ptr to mem struct to fill out
628 * @size: size of memory requested
629 * @alignment: what to align the allocation to
631 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
632 struct i40iw_dma_mem *mem,
636 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
639 return I40IW_ERR_PARAM;
640 mem->size = ALIGN(size, alignment);
641 mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
642 (dma_addr_t *)&mem->pa, GFP_KERNEL);
644 return I40IW_ERR_NO_MEMORY;
649 * i40iw_free_dma_mem - Memory free helper fn
650 * @hw: pointer to the HW structure
651 * @mem: ptr to mem struct to free
653 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
655 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
657 if (!mem || !mem->va)
660 dma_free_coherent(&pcidev->dev, mem->size,
661 mem->va, (dma_addr_t)mem->pa);
666 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
667 * @hw: pointer to the HW structure
668 * @mem: ptr to mem struct to fill out
669 * @size: size of memory requested
671 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
672 struct i40iw_virt_mem *mem,
676 return I40IW_ERR_PARAM;
679 mem->va = kzalloc(size, GFP_KERNEL);
684 return I40IW_ERR_NO_MEMORY;
688 * i40iw_free_virt_mem - virtual memory free helper fn
689 * @hw: pointer to the HW structure
690 * @mem: ptr to mem struct to free
692 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
693 struct i40iw_virt_mem *mem)
696 return I40IW_ERR_PARAM;
698 * mem->va points to the parent of mem, so both mem and mem->va
699 * can not be touched once mem->va is freed
706 * i40iw_cqp_sds_cmd - create cqp command for sd
707 * @dev: hardware control device structure
708 * @sd_info: information for sd cqp
711 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
712 struct i40iw_update_sds_info *sdinfo)
714 enum i40iw_status_code status;
715 struct i40iw_cqp_request *cqp_request;
716 struct cqp_commands_info *cqp_info;
717 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
719 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
721 return I40IW_ERR_NO_MEMORY;
722 cqp_info = &cqp_request->info;
723 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
724 sizeof(cqp_info->in.u.update_pe_sds.info));
725 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
726 cqp_info->post_sq = 1;
727 cqp_info->in.u.update_pe_sds.dev = dev;
728 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
729 status = i40iw_handle_cqp_op(iwdev, cqp_request);
731 i40iw_pr_err("CQP-OP Update SD's fail");
736 * i40iw_qp_suspend_resume - cqp command for suspend/resume
737 * @dev: hardware control device structure
738 * @qp: hardware control qp
739 * @suspend: flag if suspend or resume
741 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
743 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
744 struct i40iw_cqp_request *cqp_request;
745 struct i40iw_sc_cqp *cqp = dev->cqp;
746 struct cqp_commands_info *cqp_info;
747 enum i40iw_status_code status;
749 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
753 cqp_info = &cqp_request->info;
754 cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
755 cqp_info->in.u.suspend_resume.cqp = cqp;
756 cqp_info->in.u.suspend_resume.qp = qp;
757 cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
758 status = i40iw_handle_cqp_op(iwdev, cqp_request);
760 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
764 * i40iw_term_modify_qp - modify qp for term message
765 * @qp: hardware control qp
766 * @next_state: qp's next state
767 * @term: terminate code
770 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
772 struct i40iw_qp *iwqp;
774 iwqp = (struct i40iw_qp *)qp->back_qp;
775 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
779 * i40iw_terminate_done - after terminate is completed
780 * @qp: hardware control qp
781 * @timeout_occurred: indicates if terminate timer expired
783 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
785 struct i40iw_qp *iwqp;
786 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
791 iwqp = (struct i40iw_qp *)qp->back_qp;
792 spin_lock_irqsave(&iwqp->lock, flags);
793 if (iwqp->hte_added) {
797 first_time = !(qp->term_flags & I40IW_TERM_DONE);
798 qp->term_flags |= I40IW_TERM_DONE;
799 spin_unlock_irqrestore(&iwqp->lock, flags);
801 if (!timeout_occurred)
802 i40iw_terminate_del_timer(qp);
804 next_iwarp_state = I40IW_QP_STATE_CLOSING;
806 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
807 i40iw_cm_disconn(iwqp);
812 * i40iw_terminate_imeout - timeout happened
813 * @context: points to iwarp qp
815 static void i40iw_terminate_timeout(unsigned long context)
817 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
818 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
820 i40iw_terminate_done(qp, 1);
821 i40iw_rem_ref(&iwqp->ibqp);
825 * i40iw_terminate_start_timer - start terminate timeout
826 * @qp: hardware control qp
828 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
830 struct i40iw_qp *iwqp;
832 iwqp = (struct i40iw_qp *)qp->back_qp;
833 i40iw_add_ref(&iwqp->ibqp);
834 setup_timer(&iwqp->terminate_timer, i40iw_terminate_timeout,
835 (unsigned long)iwqp);
836 iwqp->terminate_timer.expires = jiffies + HZ;
837 add_timer(&iwqp->terminate_timer);
841 * i40iw_terminate_del_timer - delete terminate timeout
842 * @qp: hardware control qp
844 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
846 struct i40iw_qp *iwqp;
848 iwqp = (struct i40iw_qp *)qp->back_qp;
849 if (del_timer(&iwqp->terminate_timer))
850 i40iw_rem_ref(&iwqp->ibqp);
854 * i40iw_cqp_generic_worker - generic worker for cqp
855 * @work: work pointer
857 static void i40iw_cqp_generic_worker(struct work_struct *work)
859 struct i40iw_virtchnl_work_info *work_info =
860 &((struct virtchnl_work *)work)->work_info;
862 if (work_info->worker_vf_dev)
863 work_info->callback_fcn(work_info->worker_vf_dev);
867 * i40iw_cqp_spawn_worker - spawn worket thread
868 * @iwdev: device struct pointer
869 * @work_info: work request info
870 * @iw_vf_idx: virtual function index
872 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
873 struct i40iw_virtchnl_work_info *work_info,
876 struct virtchnl_work *work;
877 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
879 work = &iwdev->virtchnl_w[iw_vf_idx];
880 memcpy(&work->work_info, work_info, sizeof(*work_info));
881 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
882 queue_work(iwdev->virtchnl_wq, &work->work);
886 * i40iw_cqp_manage_hmc_fcn_worker -
887 * @work: work pointer for hmc info
889 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
891 struct i40iw_cqp_request *cqp_request =
892 ((struct virtchnl_work *)work)->cqp_request;
893 struct i40iw_ccq_cqe_info ccq_cqe_info;
894 struct i40iw_hmc_fcn_info *hmcfcninfo =
895 &cqp_request->info.in.u.manage_hmc_pm.info;
896 struct i40iw_device *iwdev =
897 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
899 ccq_cqe_info.cqp = NULL;
900 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
901 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
902 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
903 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
904 ccq_cqe_info.scratch = 0;
905 ccq_cqe_info.error = cqp_request->compl_info.error;
906 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
907 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
908 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
912 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
913 * @cqp_request: cqp request info struct for hmc fun
914 * @unused: unused param of callback
916 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
919 struct virtchnl_work *work;
920 struct i40iw_hmc_fcn_info *hmcfcninfo =
921 &cqp_request->info.in.u.manage_hmc_pm.info;
922 struct i40iw_device *iwdev =
923 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
926 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
927 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
928 atomic_inc(&cqp_request->refcount);
929 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
930 work->cqp_request = cqp_request;
931 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
932 queue_work(iwdev->virtchnl_wq, &work->work);
933 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
935 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
940 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
941 * @dev: hardware control device structure
942 * @hmcfcninfo: info for hmc
944 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
945 struct i40iw_hmc_fcn_info *hmcfcninfo)
947 enum i40iw_status_code status;
948 struct i40iw_cqp_request *cqp_request;
949 struct cqp_commands_info *cqp_info;
950 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
952 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
953 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
955 return I40IW_ERR_NO_MEMORY;
956 cqp_info = &cqp_request->info;
957 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
958 cqp_request->param = hmcfcninfo;
959 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
960 sizeof(*hmcfcninfo));
961 cqp_info->in.u.manage_hmc_pm.dev = dev;
962 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
963 cqp_info->post_sq = 1;
964 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
965 status = i40iw_handle_cqp_op(iwdev, cqp_request);
967 i40iw_pr_err("CQP-OP Manage HMC fail");
972 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
973 * @iwdev: function device struct
974 * @values_mem: buffer for fpm
975 * @hmc_fn_id: function id for fpm
977 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
978 struct i40iw_dma_mem *values_mem,
981 enum i40iw_status_code status;
982 struct i40iw_cqp_request *cqp_request;
983 struct cqp_commands_info *cqp_info;
984 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
986 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
988 return I40IW_ERR_NO_MEMORY;
989 cqp_info = &cqp_request->info;
990 cqp_request->param = NULL;
991 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
992 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
993 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
994 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
995 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
996 cqp_info->post_sq = 1;
997 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
998 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1000 i40iw_pr_err("CQP-OP Query FPM fail");
1005 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1006 * @dev: hardware control device structure
1007 * @values_mem: buffer with fpm values
1008 * @hmc_fn_id: function id for fpm
1010 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1011 struct i40iw_dma_mem *values_mem,
1014 enum i40iw_status_code status;
1015 struct i40iw_cqp_request *cqp_request;
1016 struct cqp_commands_info *cqp_info;
1017 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1019 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1021 return I40IW_ERR_NO_MEMORY;
1022 cqp_info = &cqp_request->info;
1023 cqp_request->param = NULL;
1024 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1025 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1026 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1027 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1028 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1029 cqp_info->post_sq = 1;
1030 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1031 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1033 i40iw_pr_err("CQP-OP Commit FPM fail");
1038 * i40iw_vf_wait_vchnl_resp - wait for channel msg
1039 * @iwdev: function's device struct
1041 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1043 struct i40iw_device *iwdev = dev->back_dev;
1046 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1047 __func__, __LINE__, dev, iwdev);
1049 atomic_set(&iwdev->vchnl_msgs, 2);
1050 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1051 (atomic_read(&iwdev->vchnl_msgs) == 1),
1052 I40IW_VCHNL_EVENT_TIMEOUT);
1053 atomic_dec(&iwdev->vchnl_msgs);
1055 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1056 atomic_set(&iwdev->vchnl_msgs, 0);
1057 dev->vchnl_up = false;
1058 return I40IW_ERR_TIMEOUT;
1060 wake_up(&dev->vf_reqs);
1065 * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1066 * @dev: device pointer
1067 * @cq: pointer to created cq
1069 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1070 struct i40iw_sc_cq *cq)
1072 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1073 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1074 struct i40iw_cqp_request *cqp_request;
1075 struct cqp_commands_info *cqp_info;
1076 enum i40iw_status_code status;
1078 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1080 return I40IW_ERR_NO_MEMORY;
1082 cqp_info = &cqp_request->info;
1083 cqp_info->cqp_cmd = OP_CQ_CREATE;
1084 cqp_info->post_sq = 1;
1085 cqp_info->in.u.cq_create.cq = cq;
1086 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1087 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1089 i40iw_pr_err("CQP-OP Create QP fail");
1095 * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1096 * @dev: device pointer
1097 * @qp: pointer to created qp
1099 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1100 struct i40iw_sc_qp *qp)
1102 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1103 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1104 struct i40iw_cqp_request *cqp_request;
1105 struct cqp_commands_info *cqp_info;
1106 struct i40iw_create_qp_info *qp_info;
1107 enum i40iw_status_code status;
1109 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1111 return I40IW_ERR_NO_MEMORY;
1113 cqp_info = &cqp_request->info;
1114 qp_info = &cqp_request->info.in.u.qp_create.info;
1116 memset(qp_info, 0, sizeof(*qp_info));
1118 qp_info->cq_num_valid = true;
1119 qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1121 cqp_info->cqp_cmd = OP_QP_CREATE;
1122 cqp_info->post_sq = 1;
1123 cqp_info->in.u.qp_create.qp = qp;
1124 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1125 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1127 i40iw_pr_err("CQP-OP QP create fail");
1132 * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1133 * @dev: device pointer
1134 * @cq: pointer to cq
1136 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1138 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1140 i40iw_cq_wq_destroy(iwdev, cq);
1144 * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1145 * @dev: device pointer
1146 * @qp: pointer to qp
1148 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1150 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1151 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1152 struct i40iw_cqp_request *cqp_request;
1153 struct cqp_commands_info *cqp_info;
1154 enum i40iw_status_code status;
1156 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1160 cqp_info = &cqp_request->info;
1161 memset(cqp_info, 0, sizeof(*cqp_info));
1163 cqp_info->cqp_cmd = OP_QP_DESTROY;
1164 cqp_info->post_sq = 1;
1165 cqp_info->in.u.qp_destroy.qp = qp;
1166 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1167 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1168 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1170 i40iw_pr_err("CQP QP_DESTROY fail");
1175 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1176 * @dev: hardware control device structure
1177 * @qp: hardware control qp
1179 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1181 struct i40iw_qp_flush_info info;
1182 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1184 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1185 memset(&info, 0, sizeof(info));
1186 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1187 info.generate_ae = true;
1188 info.ae_source = 0x3;
1189 (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1193 * i40iw_init_hash_desc - initialize hash for crc calculation
1194 * @desc: cryption type
1196 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1198 struct crypto_shash *tfm;
1199 struct shash_desc *tdesc;
1201 tfm = crypto_alloc_shash("crc32c", 0, 0);
1203 return I40IW_ERR_MPA_CRC;
1205 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1208 crypto_free_shash(tfm);
1209 return I40IW_ERR_MPA_CRC;
1218 * i40iw_free_hash_desc - free hash desc
1219 * @desc: to be freed
1221 void i40iw_free_hash_desc(struct shash_desc *desc)
1224 crypto_free_shash(desc->tfm);
1230 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1231 * @dev: hardware control device structure
1232 * @mem: buffer ptr for fpm to be allocated
1233 * @return: memory allocation status
1235 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1236 struct i40iw_dma_mem *mem)
1238 enum i40iw_status_code status;
1239 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1241 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1242 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1247 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1248 * @desc: desc for hash
1249 * @addr: address of buffer for crc
1250 * @length: length of buffer
1251 * @value: value to be compared
1253 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1260 enum i40iw_status_code ret_code = 0;
1262 crypto_shash_init(desc);
1263 ret = crypto_shash_update(desc, addr, length);
1265 crypto_shash_final(desc, (u8 *)&crc);
1267 i40iw_pr_err("mpa crc check fail\n");
1268 ret_code = I40IW_ERR_MPA_CRC;
1274 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1275 * @dev: hardware control device structure
1276 * @buf: receive puda buffer on exception q
1278 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1279 struct i40iw_puda_buf *buf)
1281 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1282 struct i40iw_qp *iwqp;
1283 struct i40iw_cm_node *cm_node;
1284 u32 loc_addr[4], rem_addr[4];
1285 u16 loc_port, rem_port;
1286 struct ipv6hdr *ip6h;
1287 struct iphdr *iph = (struct iphdr *)buf->iph;
1288 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1290 if (iph->version == 4) {
1291 memset(loc_addr, 0, sizeof(loc_addr));
1292 loc_addr[0] = ntohl(iph->daddr);
1293 memset(rem_addr, 0, sizeof(rem_addr));
1294 rem_addr[0] = ntohl(iph->saddr);
1296 ip6h = (struct ipv6hdr *)buf->iph;
1297 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1298 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1300 loc_port = ntohs(tcph->dest);
1301 rem_port = ntohs(tcph->source);
1303 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1307 iwqp = cm_node->iwqp;
1308 return &iwqp->sc_qp;
1312 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1313 * @buf: puda to update
1314 * @length: length of buffer
1315 * @seqnum: seq number for tcp
1317 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1319 struct tcphdr *tcph;
1323 u8 *addr = (u8 *)buf->mem.va;
1325 iphlen = (buf->ipv4) ? 20 : 40;
1326 iph = (struct iphdr *)(addr + buf->maclen);
1327 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1328 packetsize = length + buf->tcphlen + iphlen;
1330 iph->tot_len = htons(packetsize);
1331 tcph->seq = htonl(seqnum);
1335 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1336 * @info: to get information
1339 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1340 struct i40iw_puda_buf *buf)
1343 struct ipv6hdr *ip6h;
1344 struct tcphdr *tcph;
1347 u8 *mem = (u8 *)buf->mem.va;
1348 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1350 if (ethh->h_proto == htons(0x8100)) {
1351 info->vlan_valid = true;
1352 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1354 buf->maclen = (info->vlan_valid) ? 18 : 14;
1355 iphlen = (info->l3proto) ? 40 : 20;
1356 buf->ipv4 = (info->l3proto) ? false : true;
1357 buf->iph = mem + buf->maclen;
1358 iph = (struct iphdr *)buf->iph;
1360 buf->tcph = buf->iph + iphlen;
1361 tcph = (struct tcphdr *)buf->tcph;
1364 pkt_len = ntohs(iph->tot_len);
1366 ip6h = (struct ipv6hdr *)buf->iph;
1367 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1370 buf->totallen = pkt_len + buf->maclen;
1372 if (info->payload_len < buf->totallen) {
1373 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1374 info->payload_len, buf->totallen);
1375 return I40IW_ERR_INVALID_SIZE;
1378 buf->tcphlen = (tcph->doff) << 2;
1379 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1380 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1381 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1382 buf->seqnum = ntohl(tcph->seq);
1387 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1388 * @vsi: pointer to the vsi structure
1390 static void i40iw_hw_stats_timeout(unsigned long vsi)
1392 struct i40iw_sc_vsi *sc_vsi = (struct i40iw_sc_vsi *)vsi;
1393 struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1394 struct i40iw_vsi_pestat *pf_devstat = sc_vsi->pestat;
1395 struct i40iw_vsi_pestat *vf_devstat = NULL;
1397 unsigned long flags;
1400 i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1402 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1403 spin_lock_irqsave(&pf_devstat->lock, flags);
1404 if (pf_dev->vf_dev[iw_vf_idx]) {
1405 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1406 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1407 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1410 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1413 mod_timer(&pf_devstat->stats_timer,
1414 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1418 * i40iw_hw_stats_start_timer - Start periodic stats timer
1419 * @vsi: pointer to the vsi structure
1421 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1423 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1425 setup_timer(&devstat->stats_timer, i40iw_hw_stats_timeout,
1426 (unsigned long)vsi);
1427 mod_timer(&devstat->stats_timer,
1428 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1432 * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1433 * @vsi: pointer to the vsi structure
1435 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1437 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1439 del_timer_sync(&devstat->stats_timer);