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);
550 i40iw_pr_err("CQP-OP Destroy QP fail");
554 * i40iw_get_qp - get qp address
555 * @device: iwarp device
558 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
560 struct i40iw_device *iwdev = to_iwdev(device);
562 if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
565 return &iwdev->qp_table[qpn]->ibqp;
569 * i40iw_debug_buf - print debug msg and buffer is mask set
570 * @dev: hardware control device structure
571 * @mask: mask to compare if to print debug buffer
572 * @buf: points buffer addr
573 * @size: saize of buffer to print
575 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
576 enum i40iw_debug_flag mask,
583 if (!(dev->debug_mask & mask))
585 i40iw_debug(dev, mask, "%s\n", desc);
586 i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
587 (unsigned long long)virt_to_phys(buf));
589 for (i = 0; i < size; i += 8)
590 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
594 * i40iw_get_hw_addr - return hw addr
595 * @par: points to shared dev
597 u8 __iomem *i40iw_get_hw_addr(void *par)
599 struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
601 return dev->hw->hw_addr;
605 * i40iw_remove_head - return head entry and remove from list
606 * @list: list for entry
608 void *i40iw_remove_head(struct list_head *list)
610 struct list_head *entry;
612 if (list_empty(list))
615 entry = (void *)list->next;
617 return (void *)entry;
621 * i40iw_allocate_dma_mem - Memory alloc helper fn
622 * @hw: pointer to the HW structure
623 * @mem: ptr to mem struct to fill out
624 * @size: size of memory requested
625 * @alignment: what to align the allocation to
627 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
628 struct i40iw_dma_mem *mem,
632 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
635 return I40IW_ERR_PARAM;
636 mem->size = ALIGN(size, alignment);
637 mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
638 (dma_addr_t *)&mem->pa, GFP_KERNEL);
640 return I40IW_ERR_NO_MEMORY;
645 * i40iw_free_dma_mem - Memory free helper fn
646 * @hw: pointer to the HW structure
647 * @mem: ptr to mem struct to free
649 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
651 struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
653 if (!mem || !mem->va)
656 dma_free_coherent(&pcidev->dev, mem->size,
657 mem->va, (dma_addr_t)mem->pa);
662 * i40iw_allocate_virt_mem - virtual memory alloc helper fn
663 * @hw: pointer to the HW structure
664 * @mem: ptr to mem struct to fill out
665 * @size: size of memory requested
667 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
668 struct i40iw_virt_mem *mem,
672 return I40IW_ERR_PARAM;
675 mem->va = kzalloc(size, GFP_KERNEL);
680 return I40IW_ERR_NO_MEMORY;
684 * i40iw_free_virt_mem - virtual memory free helper fn
685 * @hw: pointer to the HW structure
686 * @mem: ptr to mem struct to free
688 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
689 struct i40iw_virt_mem *mem)
692 return I40IW_ERR_PARAM;
694 * mem->va points to the parent of mem, so both mem and mem->va
695 * can not be touched once mem->va is freed
702 * i40iw_cqp_sds_cmd - create cqp command for sd
703 * @dev: hardware control device structure
704 * @sd_info: information for sd cqp
707 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
708 struct i40iw_update_sds_info *sdinfo)
710 enum i40iw_status_code status;
711 struct i40iw_cqp_request *cqp_request;
712 struct cqp_commands_info *cqp_info;
713 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
715 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
717 return I40IW_ERR_NO_MEMORY;
718 cqp_info = &cqp_request->info;
719 memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
720 sizeof(cqp_info->in.u.update_pe_sds.info));
721 cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
722 cqp_info->post_sq = 1;
723 cqp_info->in.u.update_pe_sds.dev = dev;
724 cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
725 status = i40iw_handle_cqp_op(iwdev, cqp_request);
727 i40iw_pr_err("CQP-OP Update SD's fail");
732 * i40iw_qp_suspend_resume - cqp command for suspend/resume
733 * @dev: hardware control device structure
734 * @qp: hardware control qp
735 * @suspend: flag if suspend or resume
737 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
739 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
740 struct i40iw_cqp_request *cqp_request;
741 struct i40iw_sc_cqp *cqp = dev->cqp;
742 struct cqp_commands_info *cqp_info;
743 enum i40iw_status_code status;
745 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
749 cqp_info = &cqp_request->info;
750 cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
751 cqp_info->in.u.suspend_resume.cqp = cqp;
752 cqp_info->in.u.suspend_resume.qp = qp;
753 cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
754 status = i40iw_handle_cqp_op(iwdev, cqp_request);
756 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
760 * i40iw_term_modify_qp - modify qp for term message
761 * @qp: hardware control qp
762 * @next_state: qp's next state
763 * @term: terminate code
766 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
768 struct i40iw_qp *iwqp;
770 iwqp = (struct i40iw_qp *)qp->back_qp;
771 i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
775 * i40iw_terminate_done - after terminate is completed
776 * @qp: hardware control qp
777 * @timeout_occurred: indicates if terminate timer expired
779 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
781 struct i40iw_qp *iwqp;
782 u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
787 iwqp = (struct i40iw_qp *)qp->back_qp;
788 spin_lock_irqsave(&iwqp->lock, flags);
789 if (iwqp->hte_added) {
793 first_time = !(qp->term_flags & I40IW_TERM_DONE);
794 qp->term_flags |= I40IW_TERM_DONE;
795 spin_unlock_irqrestore(&iwqp->lock, flags);
797 if (!timeout_occurred)
798 i40iw_terminate_del_timer(qp);
800 next_iwarp_state = I40IW_QP_STATE_CLOSING;
802 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
803 i40iw_cm_disconn(iwqp);
808 * i40iw_terminate_imeout - timeout happened
809 * @context: points to iwarp qp
811 static void i40iw_terminate_timeout(unsigned long context)
813 struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
814 struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
816 i40iw_terminate_done(qp, 1);
817 i40iw_rem_ref(&iwqp->ibqp);
821 * i40iw_terminate_start_timer - start terminate timeout
822 * @qp: hardware control qp
824 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
826 struct i40iw_qp *iwqp;
828 iwqp = (struct i40iw_qp *)qp->back_qp;
829 i40iw_add_ref(&iwqp->ibqp);
830 setup_timer(&iwqp->terminate_timer, i40iw_terminate_timeout,
831 (unsigned long)iwqp);
832 iwqp->terminate_timer.expires = jiffies + HZ;
833 add_timer(&iwqp->terminate_timer);
837 * i40iw_terminate_del_timer - delete terminate timeout
838 * @qp: hardware control qp
840 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
842 struct i40iw_qp *iwqp;
844 iwqp = (struct i40iw_qp *)qp->back_qp;
845 if (del_timer(&iwqp->terminate_timer))
846 i40iw_rem_ref(&iwqp->ibqp);
850 * i40iw_cqp_generic_worker - generic worker for cqp
851 * @work: work pointer
853 static void i40iw_cqp_generic_worker(struct work_struct *work)
855 struct i40iw_virtchnl_work_info *work_info =
856 &((struct virtchnl_work *)work)->work_info;
858 if (work_info->worker_vf_dev)
859 work_info->callback_fcn(work_info->worker_vf_dev);
863 * i40iw_cqp_spawn_worker - spawn worket thread
864 * @iwdev: device struct pointer
865 * @work_info: work request info
866 * @iw_vf_idx: virtual function index
868 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
869 struct i40iw_virtchnl_work_info *work_info,
872 struct virtchnl_work *work;
873 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
875 work = &iwdev->virtchnl_w[iw_vf_idx];
876 memcpy(&work->work_info, work_info, sizeof(*work_info));
877 INIT_WORK(&work->work, i40iw_cqp_generic_worker);
878 queue_work(iwdev->virtchnl_wq, &work->work);
882 * i40iw_cqp_manage_hmc_fcn_worker -
883 * @work: work pointer for hmc info
885 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
887 struct i40iw_cqp_request *cqp_request =
888 ((struct virtchnl_work *)work)->cqp_request;
889 struct i40iw_ccq_cqe_info ccq_cqe_info;
890 struct i40iw_hmc_fcn_info *hmcfcninfo =
891 &cqp_request->info.in.u.manage_hmc_pm.info;
892 struct i40iw_device *iwdev =
893 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
895 ccq_cqe_info.cqp = NULL;
896 ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
897 ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
898 ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
899 ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
900 ccq_cqe_info.scratch = 0;
901 ccq_cqe_info.error = cqp_request->compl_info.error;
902 hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
903 hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
904 i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
908 * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
909 * @cqp_request: cqp request info struct for hmc fun
910 * @unused: unused param of callback
912 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
915 struct virtchnl_work *work;
916 struct i40iw_hmc_fcn_info *hmcfcninfo =
917 &cqp_request->info.in.u.manage_hmc_pm.info;
918 struct i40iw_device *iwdev =
919 (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
922 if (hmcfcninfo && hmcfcninfo->callback_fcn) {
923 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
924 atomic_inc(&cqp_request->refcount);
925 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
926 work->cqp_request = cqp_request;
927 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
928 queue_work(iwdev->virtchnl_wq, &work->work);
929 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
931 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
936 * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
937 * @dev: hardware control device structure
938 * @hmcfcninfo: info for hmc
940 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
941 struct i40iw_hmc_fcn_info *hmcfcninfo)
943 enum i40iw_status_code status;
944 struct i40iw_cqp_request *cqp_request;
945 struct cqp_commands_info *cqp_info;
946 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
948 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
949 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
951 return I40IW_ERR_NO_MEMORY;
952 cqp_info = &cqp_request->info;
953 cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
954 cqp_request->param = hmcfcninfo;
955 memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
956 sizeof(*hmcfcninfo));
957 cqp_info->in.u.manage_hmc_pm.dev = dev;
958 cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
959 cqp_info->post_sq = 1;
960 cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
961 status = i40iw_handle_cqp_op(iwdev, cqp_request);
963 i40iw_pr_err("CQP-OP Manage HMC fail");
968 * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
969 * @iwdev: function device struct
970 * @values_mem: buffer for fpm
971 * @hmc_fn_id: function id for fpm
973 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
974 struct i40iw_dma_mem *values_mem,
977 enum i40iw_status_code status;
978 struct i40iw_cqp_request *cqp_request;
979 struct cqp_commands_info *cqp_info;
980 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
982 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
984 return I40IW_ERR_NO_MEMORY;
985 cqp_info = &cqp_request->info;
986 cqp_request->param = NULL;
987 cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
988 cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
989 cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
990 cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
991 cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
992 cqp_info->post_sq = 1;
993 cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
994 status = i40iw_handle_cqp_op(iwdev, cqp_request);
996 i40iw_pr_err("CQP-OP Query FPM fail");
1001 * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1002 * @dev: hardware control device structure
1003 * @values_mem: buffer with fpm values
1004 * @hmc_fn_id: function id for fpm
1006 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1007 struct i40iw_dma_mem *values_mem,
1010 enum i40iw_status_code status;
1011 struct i40iw_cqp_request *cqp_request;
1012 struct cqp_commands_info *cqp_info;
1013 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1015 cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1017 return I40IW_ERR_NO_MEMORY;
1018 cqp_info = &cqp_request->info;
1019 cqp_request->param = NULL;
1020 cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1021 cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1022 cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1023 cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1024 cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1025 cqp_info->post_sq = 1;
1026 cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1027 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1029 i40iw_pr_err("CQP-OP Commit FPM fail");
1034 * i40iw_vf_wait_vchnl_resp - wait for channel msg
1035 * @iwdev: function's device struct
1037 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1039 struct i40iw_device *iwdev = dev->back_dev;
1042 i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1043 __func__, __LINE__, dev, iwdev);
1045 atomic_set(&iwdev->vchnl_msgs, 2);
1046 timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1047 (atomic_read(&iwdev->vchnl_msgs) == 1),
1048 I40IW_VCHNL_EVENT_TIMEOUT);
1049 atomic_dec(&iwdev->vchnl_msgs);
1051 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1052 atomic_set(&iwdev->vchnl_msgs, 0);
1053 dev->vchnl_up = false;
1054 return I40IW_ERR_TIMEOUT;
1056 wake_up(&dev->vf_reqs);
1061 * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1062 * @dev: device pointer
1063 * @cq: pointer to created cq
1065 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1066 struct i40iw_sc_cq *cq)
1068 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1069 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1070 struct i40iw_cqp_request *cqp_request;
1071 struct cqp_commands_info *cqp_info;
1072 enum i40iw_status_code status;
1074 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1076 return I40IW_ERR_NO_MEMORY;
1078 cqp_info = &cqp_request->info;
1079 cqp_info->cqp_cmd = OP_CQ_CREATE;
1080 cqp_info->post_sq = 1;
1081 cqp_info->in.u.cq_create.cq = cq;
1082 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1083 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1085 i40iw_pr_err("CQP-OP Create QP fail");
1091 * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1092 * @dev: device pointer
1093 * @qp: pointer to created qp
1095 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1096 struct i40iw_sc_qp *qp)
1098 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1099 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1100 struct i40iw_cqp_request *cqp_request;
1101 struct cqp_commands_info *cqp_info;
1102 struct i40iw_create_qp_info *qp_info;
1103 enum i40iw_status_code status;
1105 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1107 return I40IW_ERR_NO_MEMORY;
1109 cqp_info = &cqp_request->info;
1110 qp_info = &cqp_request->info.in.u.qp_create.info;
1112 memset(qp_info, 0, sizeof(*qp_info));
1114 qp_info->cq_num_valid = true;
1115 qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1117 cqp_info->cqp_cmd = OP_QP_CREATE;
1118 cqp_info->post_sq = 1;
1119 cqp_info->in.u.qp_create.qp = qp;
1120 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1121 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1123 i40iw_pr_err("CQP-OP QP create fail");
1128 * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1129 * @dev: device pointer
1130 * @cq: pointer to cq
1132 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1134 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1136 i40iw_cq_wq_destroy(iwdev, cq);
1140 * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1141 * @dev: device pointer
1142 * @qp: pointer to qp
1144 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1146 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1147 struct i40iw_cqp *iwcqp = &iwdev->cqp;
1148 struct i40iw_cqp_request *cqp_request;
1149 struct cqp_commands_info *cqp_info;
1150 enum i40iw_status_code status;
1152 cqp_request = i40iw_get_cqp_request(iwcqp, true);
1156 cqp_info = &cqp_request->info;
1157 memset(cqp_info, 0, sizeof(*cqp_info));
1159 cqp_info->cqp_cmd = OP_QP_DESTROY;
1160 cqp_info->post_sq = 1;
1161 cqp_info->in.u.qp_destroy.qp = qp;
1162 cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1163 cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1164 status = i40iw_handle_cqp_op(iwdev, cqp_request);
1166 i40iw_pr_err("CQP QP_DESTROY fail");
1171 * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1172 * @dev: hardware control device structure
1173 * @qp: hardware control qp
1175 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1177 struct i40iw_qp_flush_info info;
1178 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1180 i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1181 memset(&info, 0, sizeof(info));
1182 info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1183 info.generate_ae = true;
1184 info.ae_source = 0x3;
1185 (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1189 * i40iw_init_hash_desc - initialize hash for crc calculation
1190 * @desc: cryption type
1192 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1194 struct crypto_shash *tfm;
1195 struct shash_desc *tdesc;
1197 tfm = crypto_alloc_shash("crc32c", 0, 0);
1199 return I40IW_ERR_MPA_CRC;
1201 tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1204 crypto_free_shash(tfm);
1205 return I40IW_ERR_MPA_CRC;
1214 * i40iw_free_hash_desc - free hash desc
1215 * @desc: to be freed
1217 void i40iw_free_hash_desc(struct shash_desc *desc)
1220 crypto_free_shash(desc->tfm);
1226 * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1227 * @dev: hardware control device structure
1228 * @mem: buffer ptr for fpm to be allocated
1229 * @return: memory allocation status
1231 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1232 struct i40iw_dma_mem *mem)
1234 enum i40iw_status_code status;
1235 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1237 status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1238 I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1243 * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1244 * @desc: desc for hash
1245 * @addr: address of buffer for crc
1246 * @length: length of buffer
1247 * @value: value to be compared
1249 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1256 enum i40iw_status_code ret_code = 0;
1258 crypto_shash_init(desc);
1259 ret = crypto_shash_update(desc, addr, length);
1261 crypto_shash_final(desc, (u8 *)&crc);
1263 i40iw_pr_err("mpa crc check fail\n");
1264 ret_code = I40IW_ERR_MPA_CRC;
1270 * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1271 * @dev: hardware control device structure
1272 * @buf: receive puda buffer on exception q
1274 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1275 struct i40iw_puda_buf *buf)
1277 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1278 struct i40iw_qp *iwqp;
1279 struct i40iw_cm_node *cm_node;
1280 u32 loc_addr[4], rem_addr[4];
1281 u16 loc_port, rem_port;
1282 struct ipv6hdr *ip6h;
1283 struct iphdr *iph = (struct iphdr *)buf->iph;
1284 struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1286 if (iph->version == 4) {
1287 memset(loc_addr, 0, sizeof(loc_addr));
1288 loc_addr[0] = ntohl(iph->daddr);
1289 memset(rem_addr, 0, sizeof(rem_addr));
1290 rem_addr[0] = ntohl(iph->saddr);
1292 ip6h = (struct ipv6hdr *)buf->iph;
1293 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1294 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1296 loc_port = ntohs(tcph->dest);
1297 rem_port = ntohs(tcph->source);
1299 cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1303 iwqp = cm_node->iwqp;
1304 return &iwqp->sc_qp;
1308 * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1309 * @buf: puda to update
1310 * @length: length of buffer
1311 * @seqnum: seq number for tcp
1313 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1315 struct tcphdr *tcph;
1319 u8 *addr = (u8 *)buf->mem.va;
1321 iphlen = (buf->ipv4) ? 20 : 40;
1322 iph = (struct iphdr *)(addr + buf->maclen);
1323 tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1324 packetsize = length + buf->tcphlen + iphlen;
1326 iph->tot_len = htons(packetsize);
1327 tcph->seq = htonl(seqnum);
1331 * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1332 * @info: to get information
1335 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1336 struct i40iw_puda_buf *buf)
1339 struct ipv6hdr *ip6h;
1340 struct tcphdr *tcph;
1343 u8 *mem = (u8 *)buf->mem.va;
1344 struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1346 if (ethh->h_proto == htons(0x8100)) {
1347 info->vlan_valid = true;
1348 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1350 buf->maclen = (info->vlan_valid) ? 18 : 14;
1351 iphlen = (info->l3proto) ? 40 : 20;
1352 buf->ipv4 = (info->l3proto) ? false : true;
1353 buf->iph = mem + buf->maclen;
1354 iph = (struct iphdr *)buf->iph;
1356 buf->tcph = buf->iph + iphlen;
1357 tcph = (struct tcphdr *)buf->tcph;
1360 pkt_len = ntohs(iph->tot_len);
1362 ip6h = (struct ipv6hdr *)buf->iph;
1363 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1366 buf->totallen = pkt_len + buf->maclen;
1368 if (info->payload_len < buf->totallen) {
1369 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1370 info->payload_len, buf->totallen);
1371 return I40IW_ERR_INVALID_SIZE;
1374 buf->tcphlen = (tcph->doff) << 2;
1375 buf->datalen = pkt_len - iphlen - buf->tcphlen;
1376 buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1377 buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1378 buf->seqnum = ntohl(tcph->seq);
1383 * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1384 * @vsi: pointer to the vsi structure
1386 static void i40iw_hw_stats_timeout(unsigned long vsi)
1388 struct i40iw_sc_vsi *sc_vsi = (struct i40iw_sc_vsi *)vsi;
1389 struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1390 struct i40iw_vsi_pestat *pf_devstat = sc_vsi->pestat;
1391 struct i40iw_vsi_pestat *vf_devstat = NULL;
1393 unsigned long flags;
1396 i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1398 for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1399 spin_lock_irqsave(&pf_devstat->lock, flags);
1400 if (pf_dev->vf_dev[iw_vf_idx]) {
1401 if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1402 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1403 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1406 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1409 mod_timer(&pf_devstat->stats_timer,
1410 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1414 * i40iw_hw_stats_start_timer - Start periodic stats timer
1415 * @vsi: pointer to the vsi structure
1417 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1419 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1421 setup_timer(&devstat->stats_timer, i40iw_hw_stats_timeout,
1422 (unsigned long)vsi);
1423 mod_timer(&devstat->stats_timer,
1424 jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1428 * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1429 * @vsi: pointer to the vsi structure
1431 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1433 struct i40iw_vsi_pestat *devstat = vsi->pestat;
1435 del_timer_sync(&devstat->stats_timer);