2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/device.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/delay.h>
38 #include <linux/errno.h>
39 #include <linux/list.h>
40 #include <linux/sched/mm.h>
41 #include <linux/spinlock.h>
42 #include <linux/ethtool.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/inetdevice.h>
45 #include <linux/slab.h>
49 #include <asm/byteorder.h>
51 #include <rdma/iw_cm.h>
52 #include <rdma/ib_verbs.h>
53 #include <rdma/ib_smi.h>
54 #include <rdma/ib_umem.h>
55 #include <rdma/ib_user_verbs.h>
59 #include "iwch_provider.h"
61 #include <rdma/cxgb3-abi.h>
64 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
66 struct iwch_dev *rhp = to_iwch_dev(context->device);
67 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
68 struct iwch_mm_entry *mm, *tmp;
70 pr_debug("%s context %p\n", __func__, context);
71 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
73 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
78 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
79 struct ib_udata *udata)
81 struct iwch_ucontext *context;
82 struct iwch_dev *rhp = to_iwch_dev(ibdev);
84 pr_debug("%s ibdev %p\n", __func__, ibdev);
85 context = kzalloc(sizeof(*context), GFP_KERNEL);
87 return ERR_PTR(-ENOMEM);
88 cxio_init_ucontext(&rhp->rdev, &context->uctx);
89 INIT_LIST_HEAD(&context->mmaps);
90 spin_lock_init(&context->mmap_lock);
91 return &context->ibucontext;
94 static int iwch_destroy_cq(struct ib_cq *ib_cq)
98 pr_debug("%s ib_cq %p\n", __func__, ib_cq);
99 chp = to_iwch_cq(ib_cq);
101 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
102 atomic_dec(&chp->refcnt);
103 wait_event(chp->wait, !atomic_read(&chp->refcnt));
105 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
110 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev,
111 const struct ib_cq_init_attr *attr,
112 struct ib_ucontext *ib_context,
113 struct ib_udata *udata)
115 int entries = attr->cqe;
116 struct iwch_dev *rhp;
118 struct iwch_create_cq_resp uresp;
119 struct iwch_create_cq_req ureq;
120 struct iwch_ucontext *ucontext = NULL;
124 pr_debug("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
126 return ERR_PTR(-EINVAL);
128 rhp = to_iwch_dev(ibdev);
129 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
131 return ERR_PTR(-ENOMEM);
134 ucontext = to_iwch_ucontext(ib_context);
135 if (!t3a_device(rhp)) {
136 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
138 return ERR_PTR(-EFAULT);
140 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
144 if (t3a_device(rhp)) {
147 * T3A: Add some fluff to handle extra CQEs inserted
148 * for various errors.
149 * Additional CQE possibilities:
151 * incoming RDMA WRITE Failures
152 * incoming RDMA READ REQUEST FAILUREs
153 * NOTE: We cannot ensure the CQ won't overflow.
157 entries = roundup_pow_of_two(entries);
158 chp->cq.size_log2 = ilog2(entries);
160 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
162 return ERR_PTR(-ENOMEM);
165 chp->ibcq.cqe = 1 << chp->cq.size_log2;
166 spin_lock_init(&chp->lock);
167 spin_lock_init(&chp->comp_handler_lock);
168 atomic_set(&chp->refcnt, 1);
169 init_waitqueue_head(&chp->wait);
170 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
171 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
173 return ERR_PTR(-ENOMEM);
177 struct iwch_mm_entry *mm;
179 mm = kmalloc(sizeof *mm, GFP_KERNEL);
181 iwch_destroy_cq(&chp->ibcq);
182 return ERR_PTR(-ENOMEM);
184 uresp.cqid = chp->cq.cqid;
185 uresp.size_log2 = chp->cq.size_log2;
186 spin_lock(&ucontext->mmap_lock);
187 uresp.key = ucontext->key;
188 ucontext->key += PAGE_SIZE;
189 spin_unlock(&ucontext->mmap_lock);
191 mm->addr = virt_to_phys(chp->cq.queue);
192 if (udata->outlen < sizeof uresp) {
194 pr_warn("Warning - downlevel libcxgb3 (non-fatal)\n");
195 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
196 sizeof(struct t3_cqe));
197 resplen = sizeof(struct iwch_create_cq_resp_v0);
199 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
200 sizeof(struct t3_cqe));
201 uresp.memsize = mm->len;
203 resplen = sizeof uresp;
205 if (ib_copy_to_udata(udata, &uresp, resplen)) {
207 iwch_destroy_cq(&chp->ibcq);
208 return ERR_PTR(-EFAULT);
210 insert_mmap(ucontext, mm);
212 pr_debug("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
213 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
214 (unsigned long long)chp->cq.dma_addr);
218 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
221 struct iwch_cq *chp = to_iwch_cq(cq);
222 struct t3_cq oldcq, newcq;
225 pr_debug("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
227 /* We don't downsize... */
231 /* create new t3_cq with new size */
232 cqe = roundup_pow_of_two(cqe+1);
233 newcq.size_log2 = ilog2(cqe);
235 /* Dont allow resize to less than the current wce count */
236 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
240 /* Quiesce all QPs using this CQ */
241 ret = iwch_quiesce_qps(chp);
246 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
252 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
253 sizeof(struct t3_cqe));
255 /* old iwch_qp gets new t3_cq but keeps old cqid */
258 chp->cq.cqid = oldcq.cqid;
260 /* resize new t3_cq to update the HW context */
261 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
266 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
268 /* destroy old t3_cq */
269 oldcq.cqid = newcq.cqid;
270 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
272 pr_err("%s - cxio_destroy_cq failed %d\n", __func__, ret);
275 /* add user hooks here */
278 ret = iwch_resume_qps(chp);
285 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
287 struct iwch_dev *rhp;
289 enum t3_cq_opcode cq_op;
294 chp = to_iwch_cq(ibcq);
296 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
300 if (chp->user_rptr_addr) {
301 if (get_user(rptr, chp->user_rptr_addr))
303 spin_lock_irqsave(&chp->lock, flag);
306 spin_lock_irqsave(&chp->lock, flag);
307 pr_debug("%s rptr 0x%x\n", __func__, chp->cq.rptr);
308 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
309 spin_unlock_irqrestore(&chp->lock, flag);
311 pr_err("Error %d rearming CQID 0x%x\n", err, chp->cq.cqid);
312 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
317 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
319 int len = vma->vm_end - vma->vm_start;
320 u32 key = vma->vm_pgoff << PAGE_SHIFT;
321 struct cxio_rdev *rdev_p;
323 struct iwch_mm_entry *mm;
324 struct iwch_ucontext *ucontext;
327 pr_debug("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
330 if (vma->vm_start & (PAGE_SIZE-1)) {
334 rdev_p = &(to_iwch_dev(context->device)->rdev);
335 ucontext = to_iwch_ucontext(context);
337 mm = remove_mmap(ucontext, key, len);
343 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
344 (addr < (rdev_p->rnic_info.udbell_physbase +
345 rdev_p->rnic_info.udbell_len))) {
348 * Map T3 DB register.
350 if (vma->vm_flags & VM_READ) {
354 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
355 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
356 vma->vm_flags &= ~VM_MAYREAD;
357 ret = io_remap_pfn_range(vma, vma->vm_start,
359 len, vma->vm_page_prot);
363 * Map WQ or CQ contig dma memory...
365 ret = remap_pfn_range(vma, vma->vm_start,
367 len, vma->vm_page_prot);
373 static int iwch_deallocate_pd(struct ib_pd *pd)
375 struct iwch_dev *rhp;
378 php = to_iwch_pd(pd);
380 pr_debug("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
381 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
386 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
387 struct ib_ucontext *context,
388 struct ib_udata *udata)
392 struct iwch_dev *rhp;
394 pr_debug("%s ibdev %p\n", __func__, ibdev);
395 rhp = (struct iwch_dev *) ibdev;
396 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
398 return ERR_PTR(-EINVAL);
399 php = kzalloc(sizeof(*php), GFP_KERNEL);
401 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
402 return ERR_PTR(-ENOMEM);
407 struct iwch_alloc_pd_resp resp = {.pdid = php->pdid};
409 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
410 iwch_deallocate_pd(&php->ibpd);
411 return ERR_PTR(-EFAULT);
414 pr_debug("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
418 static int iwch_dereg_mr(struct ib_mr *ib_mr)
420 struct iwch_dev *rhp;
424 pr_debug("%s ib_mr %p\n", __func__, ib_mr);
426 mhp = to_iwch_mr(ib_mr);
429 mmid = mhp->attr.stag >> 8;
430 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
433 remove_handle(rhp, &rhp->mmidr, mmid);
435 kfree((void *) (unsigned long) mhp->kva);
437 ib_umem_release(mhp->umem);
438 pr_debug("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
443 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
445 const u64 total_size = 0xffffffff;
446 const u64 mask = (total_size + PAGE_SIZE - 1) & PAGE_MASK;
447 struct iwch_pd *php = to_iwch_pd(pd);
448 struct iwch_dev *rhp = php->rhp;
451 int shift = 26, npages, ret, i;
453 pr_debug("%s ib_pd %p\n", __func__, pd);
456 * T3 only supports 32 bits of size.
458 if (sizeof(phys_addr_t) > 4) {
459 pr_warn_once("Cannot support dma_mrs on this platform\n");
460 return ERR_PTR(-ENOTSUPP);
463 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
465 return ERR_PTR(-ENOMEM);
469 npages = (total_size + (1ULL << shift) - 1) >> shift;
475 page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
481 for (i = 0; i < npages; i++)
482 page_list[i] = cpu_to_be64((u64)i << shift);
484 pr_debug("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
485 __func__, mask, shift, total_size, npages);
487 ret = iwch_alloc_pbl(mhp, npages);
493 ret = iwch_write_pbl(mhp, page_list, npages, 0);
498 mhp->attr.pdid = php->pdid;
501 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
502 mhp->attr.va_fbo = 0;
503 mhp->attr.page_size = shift - 12;
505 mhp->attr.len = (u32) total_size;
506 mhp->attr.pbl_size = npages;
507 ret = iwch_register_mem(rhp, php, mhp, shift);
521 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
522 u64 virt, int acc, struct ib_udata *udata)
528 struct iwch_dev *rhp;
531 struct iwch_reg_user_mr_resp uresp;
532 struct scatterlist *sg;
533 pr_debug("%s ib_pd %p\n", __func__, pd);
535 php = to_iwch_pd(pd);
537 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
539 return ERR_PTR(-ENOMEM);
543 mhp->umem = ib_umem_get(udata, start, length, acc, 0);
544 if (IS_ERR(mhp->umem)) {
545 err = PTR_ERR(mhp->umem);
550 shift = mhp->umem->page_shift;
554 err = iwch_alloc_pbl(mhp, n);
558 pages = (__be64 *) __get_free_page(GFP_KERNEL);
566 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
567 len = sg_dma_len(sg) >> shift;
568 for (k = 0; k < len; ++k) {
569 pages[i++] = cpu_to_be64(sg_dma_address(sg) +
571 if (i == PAGE_SIZE / sizeof *pages) {
572 err = iwch_write_pbl(mhp, pages, i, n);
582 err = iwch_write_pbl(mhp, pages, i, n);
585 free_page((unsigned long) pages);
589 mhp->attr.pdid = php->pdid;
591 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
592 mhp->attr.va_fbo = virt;
593 mhp->attr.page_size = shift - 12;
594 mhp->attr.len = (u32) length;
596 err = iwch_register_mem(rhp, php, mhp, shift);
600 if (udata && !t3a_device(rhp)) {
601 uresp.pbl_addr = (mhp->attr.pbl_addr -
602 rhp->rdev.rnic_info.pbl_base) >> 3;
603 pr_debug("%s user resp pbl_addr 0x%x\n", __func__,
606 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
607 iwch_dereg_mr(&mhp->ibmr);
619 ib_umem_release(mhp->umem);
624 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
625 struct ib_udata *udata)
627 struct iwch_dev *rhp;
634 if (type != IB_MW_TYPE_1)
635 return ERR_PTR(-EINVAL);
637 php = to_iwch_pd(pd);
639 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
641 return ERR_PTR(-ENOMEM);
642 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
648 mhp->attr.pdid = php->pdid;
649 mhp->attr.type = TPT_MW;
650 mhp->attr.stag = stag;
652 mhp->ibmw.rkey = stag;
653 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
654 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
656 return ERR_PTR(-ENOMEM);
658 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
662 static int iwch_dealloc_mw(struct ib_mw *mw)
664 struct iwch_dev *rhp;
668 mhp = to_iwch_mw(mw);
670 mmid = (mw->rkey) >> 8;
671 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
672 remove_handle(rhp, &rhp->mmidr, mmid);
673 pr_debug("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
678 static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
679 enum ib_mr_type mr_type,
682 struct iwch_dev *rhp;
689 if (mr_type != IB_MR_TYPE_MEM_REG ||
690 max_num_sg > T3_MAX_FASTREG_DEPTH)
691 return ERR_PTR(-EINVAL);
693 php = to_iwch_pd(pd);
695 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
699 mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
704 ret = iwch_alloc_pbl(mhp, max_num_sg);
707 mhp->attr.pbl_size = max_num_sg;
708 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
709 mhp->attr.pbl_size, mhp->attr.pbl_addr);
712 mhp->attr.pdid = php->pdid;
713 mhp->attr.type = TPT_NON_SHARED_MR;
714 mhp->attr.stag = stag;
717 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
718 ret = insert_handle(rhp, &rhp->mmidr, mhp, mmid);
722 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
725 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
737 static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
739 struct iwch_mr *mhp = to_iwch_mr(ibmr);
741 if (unlikely(mhp->npages == mhp->attr.pbl_size))
744 mhp->pages[mhp->npages++] = addr;
749 static int iwch_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
750 int sg_nents, unsigned int *sg_offset)
752 struct iwch_mr *mhp = to_iwch_mr(ibmr);
756 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, iwch_set_page);
759 static int iwch_destroy_qp(struct ib_qp *ib_qp)
761 struct iwch_dev *rhp;
763 struct iwch_qp_attributes attrs;
764 struct iwch_ucontext *ucontext;
766 qhp = to_iwch_qp(ib_qp);
769 attrs.next_state = IWCH_QP_STATE_ERROR;
770 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
771 wait_event(qhp->wait, !qhp->ep);
773 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
775 atomic_dec(&qhp->refcnt);
776 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
778 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
780 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
781 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
783 pr_debug("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
784 ib_qp, qhp->wq.qpid, qhp);
789 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
790 struct ib_qp_init_attr *attrs,
791 struct ib_udata *udata)
793 struct iwch_dev *rhp;
796 struct iwch_cq *schp;
797 struct iwch_cq *rchp;
798 struct iwch_create_qp_resp uresp;
799 int wqsize, sqsize, rqsize;
800 struct iwch_ucontext *ucontext;
802 pr_debug("%s ib_pd %p\n", __func__, pd);
803 if (attrs->qp_type != IB_QPT_RC)
804 return ERR_PTR(-EINVAL);
805 php = to_iwch_pd(pd);
807 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
808 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
810 return ERR_PTR(-EINVAL);
812 /* The RQT size must be # of entries + 1 rounded up to a power of two */
813 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
814 if (rqsize == attrs->cap.max_recv_wr)
815 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
817 /* T3 doesn't support RQT depth < 16 */
821 if (rqsize > T3_MAX_RQ_SIZE)
822 return ERR_PTR(-EINVAL);
824 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
825 return ERR_PTR(-EINVAL);
828 * NOTE: The SQ and total WQ sizes don't need to be
829 * a power of two. However, all the code assumes
830 * they are. EG: Q_FREECNT() and friends.
832 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
833 wqsize = roundup_pow_of_two(rqsize + sqsize);
836 * Kernel users need more wq space for fastreg WRs which can take
839 ucontext = udata ? to_iwch_ucontext(pd->uobject->context) : NULL;
840 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
841 wqsize = roundup_pow_of_two(rqsize +
842 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
843 pr_debug("%s wqsize %d sqsize %d rqsize %d\n", __func__,
844 wqsize, sqsize, rqsize);
845 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
847 return ERR_PTR(-ENOMEM);
848 qhp->wq.size_log2 = ilog2(wqsize);
849 qhp->wq.rq_size_log2 = ilog2(rqsize);
850 qhp->wq.sq_size_log2 = ilog2(sqsize);
851 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
852 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
854 return ERR_PTR(-ENOMEM);
857 attrs->cap.max_recv_wr = rqsize - 1;
858 attrs->cap.max_send_wr = sqsize;
859 attrs->cap.max_inline_data = T3_MAX_INLINE;
862 qhp->attr.pd = php->pdid;
863 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
864 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
865 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
866 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
867 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
868 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
869 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
870 qhp->attr.state = IWCH_QP_STATE_IDLE;
871 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
874 * XXX - These don't get passed in from the openib user
875 * at create time. The CM sets them via a QP modify.
876 * Need to fix... I think the CM should
878 qhp->attr.enable_rdma_read = 1;
879 qhp->attr.enable_rdma_write = 1;
880 qhp->attr.enable_bind = 1;
881 qhp->attr.max_ord = 1;
882 qhp->attr.max_ird = 1;
884 spin_lock_init(&qhp->lock);
885 init_waitqueue_head(&qhp->wait);
886 atomic_set(&qhp->refcnt, 1);
888 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
889 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
890 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
892 return ERR_PTR(-ENOMEM);
897 struct iwch_mm_entry *mm1, *mm2;
899 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
901 iwch_destroy_qp(&qhp->ibqp);
902 return ERR_PTR(-ENOMEM);
905 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
908 iwch_destroy_qp(&qhp->ibqp);
909 return ERR_PTR(-ENOMEM);
912 uresp.qpid = qhp->wq.qpid;
913 uresp.size_log2 = qhp->wq.size_log2;
914 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
915 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
916 spin_lock(&ucontext->mmap_lock);
917 uresp.key = ucontext->key;
918 ucontext->key += PAGE_SIZE;
919 uresp.db_key = ucontext->key;
920 ucontext->key += PAGE_SIZE;
921 spin_unlock(&ucontext->mmap_lock);
922 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
925 iwch_destroy_qp(&qhp->ibqp);
926 return ERR_PTR(-EFAULT);
928 mm1->key = uresp.key;
929 mm1->addr = virt_to_phys(qhp->wq.queue);
930 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
931 insert_mmap(ucontext, mm1);
932 mm2->key = uresp.db_key;
933 mm2->addr = qhp->wq.udb & PAGE_MASK;
934 mm2->len = PAGE_SIZE;
935 insert_mmap(ucontext, mm2);
937 qhp->ibqp.qp_num = qhp->wq.qpid;
938 pr_debug("%s sq_num_entries %d, rq_num_entries %d qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
939 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
940 qhp->wq.qpid, qhp, (unsigned long long)qhp->wq.dma_addr,
941 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
945 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
946 int attr_mask, struct ib_udata *udata)
948 struct iwch_dev *rhp;
950 enum iwch_qp_attr_mask mask = 0;
951 struct iwch_qp_attributes attrs;
953 pr_debug("%s ib_qp %p\n", __func__, ibqp);
955 /* iwarp does not support the RTR state */
956 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
957 attr_mask &= ~IB_QP_STATE;
959 /* Make sure we still have something left to do */
963 memset(&attrs, 0, sizeof attrs);
964 qhp = to_iwch_qp(ibqp);
967 attrs.next_state = iwch_convert_state(attr->qp_state);
968 attrs.enable_rdma_read = (attr->qp_access_flags &
969 IB_ACCESS_REMOTE_READ) ? 1 : 0;
970 attrs.enable_rdma_write = (attr->qp_access_flags &
971 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
972 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
975 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
976 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
977 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
978 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
979 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
981 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
984 void iwch_qp_add_ref(struct ib_qp *qp)
986 pr_debug("%s ib_qp %p\n", __func__, qp);
987 atomic_inc(&(to_iwch_qp(qp)->refcnt));
990 void iwch_qp_rem_ref(struct ib_qp *qp)
992 pr_debug("%s ib_qp %p\n", __func__, qp);
993 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
994 wake_up(&(to_iwch_qp(qp)->wait));
997 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
999 pr_debug("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1000 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1004 static int iwch_query_pkey(struct ib_device *ibdev,
1005 u8 port, u16 index, u16 * pkey)
1007 pr_debug("%s ibdev %p\n", __func__, ibdev);
1012 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1013 int index, union ib_gid *gid)
1015 struct iwch_dev *dev;
1017 pr_debug("%s ibdev %p, port %d, index %d, gid %p\n",
1018 __func__, ibdev, port, index, gid);
1019 dev = to_iwch_dev(ibdev);
1020 BUG_ON(port == 0 || port > 2);
1021 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1022 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1026 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1028 struct ethtool_drvinfo info;
1029 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1031 unsigned fw_maj, fw_min, fw_mic;
1033 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1035 next = info.fw_version + 1;
1036 cp = strsep(&next, ".");
1037 sscanf(cp, "%i", &fw_maj);
1038 cp = strsep(&next, ".");
1039 sscanf(cp, "%i", &fw_min);
1040 cp = strsep(&next, ".");
1041 sscanf(cp, "%i", &fw_mic);
1043 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1047 static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1048 struct ib_udata *uhw)
1051 struct iwch_dev *dev;
1053 pr_debug("%s ibdev %p\n", __func__, ibdev);
1055 if (uhw->inlen || uhw->outlen)
1058 dev = to_iwch_dev(ibdev);
1059 memset(props, 0, sizeof *props);
1060 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1061 props->hw_ver = dev->rdev.t3cdev_p->type;
1062 props->fw_ver = fw_vers_string_to_u64(dev);
1063 props->device_cap_flags = dev->device_cap_flags;
1064 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1065 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1066 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1067 props->max_mr_size = dev->attr.max_mr_size;
1068 props->max_qp = dev->attr.max_qps;
1069 props->max_qp_wr = dev->attr.max_wrs;
1070 props->max_send_sge = dev->attr.max_sge_per_wr;
1071 props->max_recv_sge = dev->attr.max_sge_per_wr;
1072 props->max_sge_rd = 1;
1073 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1074 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1075 props->max_cq = dev->attr.max_cqs;
1076 props->max_cqe = dev->attr.max_cqes_per_cq;
1077 props->max_mr = dev->attr.max_mem_regs;
1078 props->max_pd = dev->attr.max_pds;
1079 props->local_ca_ack_delay = 0;
1080 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1085 static int iwch_query_port(struct ib_device *ibdev,
1086 u8 port, struct ib_port_attr *props)
1088 struct iwch_dev *dev;
1089 struct net_device *netdev;
1090 struct in_device *inetdev;
1092 pr_debug("%s ibdev %p\n", __func__, ibdev);
1094 dev = to_iwch_dev(ibdev);
1095 netdev = dev->rdev.port_info.lldevs[port-1];
1097 /* props being zeroed by the caller, avoid zeroing it here */
1098 props->max_mtu = IB_MTU_4096;
1099 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
1101 if (!netif_carrier_ok(netdev))
1102 props->state = IB_PORT_DOWN;
1104 inetdev = in_dev_get(netdev);
1106 if (inetdev->ifa_list)
1107 props->state = IB_PORT_ACTIVE;
1109 props->state = IB_PORT_INIT;
1110 in_dev_put(inetdev);
1112 props->state = IB_PORT_INIT;
1115 props->port_cap_flags =
1117 IB_PORT_SNMP_TUNNEL_SUP |
1118 IB_PORT_REINIT_SUP |
1119 IB_PORT_DEVICE_MGMT_SUP |
1120 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1121 props->gid_tbl_len = 1;
1122 props->pkey_tbl_len = 1;
1123 props->active_width = 2;
1124 props->active_speed = IB_SPEED_DDR;
1125 props->max_msg_sz = -1;
1130 static ssize_t hw_rev_show(struct device *dev,
1131 struct device_attribute *attr, char *buf)
1133 struct iwch_dev *iwch_dev =
1134 rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
1136 pr_debug("%s dev 0x%p\n", __func__, dev);
1137 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1139 static DEVICE_ATTR_RO(hw_rev);
1141 static ssize_t hca_type_show(struct device *dev,
1142 struct device_attribute *attr, char *buf)
1144 struct iwch_dev *iwch_dev =
1145 rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
1146 struct ethtool_drvinfo info;
1147 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1149 pr_debug("%s dev 0x%p\n", __func__, dev);
1150 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1151 return sprintf(buf, "%s\n", info.driver);
1153 static DEVICE_ATTR_RO(hca_type);
1155 static ssize_t board_id_show(struct device *dev,
1156 struct device_attribute *attr, char *buf)
1158 struct iwch_dev *iwch_dev =
1159 rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
1161 pr_debug("%s dev 0x%p\n", __func__, dev);
1162 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1163 iwch_dev->rdev.rnic_info.pdev->device);
1165 static DEVICE_ATTR_RO(board_id);
1196 static const char * const names[] = {
1197 [IPINRECEIVES] = "ipInReceives",
1198 [IPINHDRERRORS] = "ipInHdrErrors",
1199 [IPINADDRERRORS] = "ipInAddrErrors",
1200 [IPINUNKNOWNPROTOS] = "ipInUnknownProtos",
1201 [IPINDISCARDS] = "ipInDiscards",
1202 [IPINDELIVERS] = "ipInDelivers",
1203 [IPOUTREQUESTS] = "ipOutRequests",
1204 [IPOUTDISCARDS] = "ipOutDiscards",
1205 [IPOUTNOROUTES] = "ipOutNoRoutes",
1206 [IPREASMTIMEOUT] = "ipReasmTimeout",
1207 [IPREASMREQDS] = "ipReasmReqds",
1208 [IPREASMOKS] = "ipReasmOKs",
1209 [IPREASMFAILS] = "ipReasmFails",
1210 [TCPACTIVEOPENS] = "tcpActiveOpens",
1211 [TCPPASSIVEOPENS] = "tcpPassiveOpens",
1212 [TCPATTEMPTFAILS] = "tcpAttemptFails",
1213 [TCPESTABRESETS] = "tcpEstabResets",
1214 [TCPCURRESTAB] = "tcpCurrEstab",
1215 [TCPINSEGS] = "tcpInSegs",
1216 [TCPOUTSEGS] = "tcpOutSegs",
1217 [TCPRETRANSSEGS] = "tcpRetransSegs",
1218 [TCPINERRS] = "tcpInErrs",
1219 [TCPOUTRSTS] = "tcpOutRsts",
1220 [TCPRTOMIN] = "tcpRtoMin",
1221 [TCPRTOMAX] = "tcpRtoMax",
1224 static struct rdma_hw_stats *iwch_alloc_stats(struct ib_device *ibdev,
1227 BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
1229 /* Our driver only supports device level stats */
1233 return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
1234 RDMA_HW_STATS_DEFAULT_LIFESPAN);
1237 static int iwch_get_mib(struct ib_device *ibdev, struct rdma_hw_stats *stats,
1240 struct iwch_dev *dev;
1241 struct tp_mib_stats m;
1244 if (port != 0 || !stats)
1247 pr_debug("%s ibdev %p\n", __func__, ibdev);
1248 dev = to_iwch_dev(ibdev);
1249 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1253 stats->value[IPINRECEIVES] = ((u64)m.ipInReceive_hi << 32) + m.ipInReceive_lo;
1254 stats->value[IPINHDRERRORS] = ((u64)m.ipInHdrErrors_hi << 32) + m.ipInHdrErrors_lo;
1255 stats->value[IPINADDRERRORS] = ((u64)m.ipInAddrErrors_hi << 32) + m.ipInAddrErrors_lo;
1256 stats->value[IPINUNKNOWNPROTOS] = ((u64)m.ipInUnknownProtos_hi << 32) + m.ipInUnknownProtos_lo;
1257 stats->value[IPINDISCARDS] = ((u64)m.ipInDiscards_hi << 32) + m.ipInDiscards_lo;
1258 stats->value[IPINDELIVERS] = ((u64)m.ipInDelivers_hi << 32) + m.ipInDelivers_lo;
1259 stats->value[IPOUTREQUESTS] = ((u64)m.ipOutRequests_hi << 32) + m.ipOutRequests_lo;
1260 stats->value[IPOUTDISCARDS] = ((u64)m.ipOutDiscards_hi << 32) + m.ipOutDiscards_lo;
1261 stats->value[IPOUTNOROUTES] = ((u64)m.ipOutNoRoutes_hi << 32) + m.ipOutNoRoutes_lo;
1262 stats->value[IPREASMTIMEOUT] = m.ipReasmTimeout;
1263 stats->value[IPREASMREQDS] = m.ipReasmReqds;
1264 stats->value[IPREASMOKS] = m.ipReasmOKs;
1265 stats->value[IPREASMFAILS] = m.ipReasmFails;
1266 stats->value[TCPACTIVEOPENS] = m.tcpActiveOpens;
1267 stats->value[TCPPASSIVEOPENS] = m.tcpPassiveOpens;
1268 stats->value[TCPATTEMPTFAILS] = m.tcpAttemptFails;
1269 stats->value[TCPESTABRESETS] = m.tcpEstabResets;
1270 stats->value[TCPCURRESTAB] = m.tcpOutRsts;
1271 stats->value[TCPINSEGS] = m.tcpCurrEstab;
1272 stats->value[TCPOUTSEGS] = ((u64)m.tcpInSegs_hi << 32) + m.tcpInSegs_lo;
1273 stats->value[TCPRETRANSSEGS] = ((u64)m.tcpOutSegs_hi << 32) + m.tcpOutSegs_lo;
1274 stats->value[TCPINERRS] = ((u64)m.tcpRetransSeg_hi << 32) + m.tcpRetransSeg_lo,
1275 stats->value[TCPOUTRSTS] = ((u64)m.tcpInErrs_hi << 32) + m.tcpInErrs_lo;
1276 stats->value[TCPRTOMIN] = m.tcpRtoMin;
1277 stats->value[TCPRTOMAX] = m.tcpRtoMax;
1279 return stats->num_counters;
1282 static struct attribute *iwch_class_attributes[] = {
1283 &dev_attr_hw_rev.attr,
1284 &dev_attr_hca_type.attr,
1285 &dev_attr_board_id.attr,
1289 static const struct attribute_group iwch_attr_group = {
1290 .attrs = iwch_class_attributes,
1293 static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1294 struct ib_port_immutable *immutable)
1296 struct ib_port_attr attr;
1299 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
1301 err = ib_query_port(ibdev, port_num, &attr);
1305 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1306 immutable->gid_tbl_len = attr.gid_tbl_len;
1311 static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str)
1313 struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
1314 struct ethtool_drvinfo info;
1315 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1317 pr_debug("%s dev 0x%p\n", __func__, iwch_dev);
1318 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1319 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
1322 static const struct ib_device_ops iwch_dev_ops = {
1323 .alloc_hw_stats = iwch_alloc_stats,
1324 .alloc_mr = iwch_alloc_mr,
1325 .alloc_mw = iwch_alloc_mw,
1326 .alloc_pd = iwch_allocate_pd,
1327 .alloc_ucontext = iwch_alloc_ucontext,
1328 .create_cq = iwch_create_cq,
1329 .create_qp = iwch_create_qp,
1330 .dealloc_mw = iwch_dealloc_mw,
1331 .dealloc_pd = iwch_deallocate_pd,
1332 .dealloc_ucontext = iwch_dealloc_ucontext,
1333 .dereg_mr = iwch_dereg_mr,
1334 .destroy_cq = iwch_destroy_cq,
1335 .destroy_qp = iwch_destroy_qp,
1336 .get_dev_fw_str = get_dev_fw_ver_str,
1337 .get_dma_mr = iwch_get_dma_mr,
1338 .get_hw_stats = iwch_get_mib,
1339 .get_port_immutable = iwch_port_immutable,
1340 .map_mr_sg = iwch_map_mr_sg,
1342 .modify_qp = iwch_ib_modify_qp,
1343 .poll_cq = iwch_poll_cq,
1344 .post_recv = iwch_post_receive,
1345 .post_send = iwch_post_send,
1346 .query_device = iwch_query_device,
1347 .query_gid = iwch_query_gid,
1348 .query_pkey = iwch_query_pkey,
1349 .query_port = iwch_query_port,
1350 .reg_user_mr = iwch_reg_user_mr,
1351 .req_notify_cq = iwch_arm_cq,
1352 .resize_cq = iwch_resize_cq,
1355 int iwch_register_device(struct iwch_dev *dev)
1359 pr_debug("%s iwch_dev %p\n", __func__, dev);
1360 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1361 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1362 dev->ibdev.owner = THIS_MODULE;
1363 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1364 IB_DEVICE_MEM_WINDOW |
1365 IB_DEVICE_MEM_MGT_EXTENSIONS;
1367 /* cxgb3 supports STag 0. */
1368 dev->ibdev.local_dma_lkey = 0;
1370 dev->ibdev.uverbs_cmd_mask =
1371 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1372 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1373 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1374 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1375 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1376 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1377 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1378 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1379 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1380 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1381 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1382 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1383 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1384 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1385 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1386 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1387 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1388 dev->ibdev.node_type = RDMA_NODE_RNIC;
1389 BUILD_BUG_ON(sizeof(IWCH_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
1390 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1391 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1392 dev->ibdev.num_comp_vectors = 1;
1393 dev->ibdev.dev.parent = &dev->rdev.rnic_info.pdev->dev;
1394 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1396 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1397 if (!dev->ibdev.iwcm)
1400 dev->ibdev.iwcm->connect = iwch_connect;
1401 dev->ibdev.iwcm->accept = iwch_accept_cr;
1402 dev->ibdev.iwcm->reject = iwch_reject_cr;
1403 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1404 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1405 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1406 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1407 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1408 memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
1409 sizeof(dev->ibdev.iwcm->ifname));
1411 dev->ibdev.driver_id = RDMA_DRIVER_CXGB3;
1412 rdma_set_device_sysfs_group(&dev->ibdev, &iwch_attr_group);
1413 ib_set_device_ops(&dev->ibdev, &iwch_dev_ops);
1414 ret = ib_register_device(&dev->ibdev, "cxgb3_%d");
1416 kfree(dev->ibdev.iwcm);
1420 void iwch_unregister_device(struct iwch_dev *dev)
1422 pr_debug("%s iwch_dev %p\n", __func__, dev);
1423 ib_unregister_device(&dev->ibdev);
1424 kfree(dev->ibdev.iwcm);