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>
56 #include <rdma/uverbs_ioctl.h>
60 #include "iwch_provider.h"
62 #include <rdma/cxgb3-abi.h>
65 static void iwch_dealloc_ucontext(struct ib_ucontext *context)
67 struct iwch_dev *rhp = to_iwch_dev(context->device);
68 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
69 struct iwch_mm_entry *mm, *tmp;
71 pr_debug("%s context %p\n", __func__, context);
72 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
74 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
77 static int iwch_alloc_ucontext(struct ib_ucontext *ucontext,
78 struct ib_udata *udata)
80 struct ib_device *ibdev = ucontext->device;
81 struct iwch_ucontext *context = to_iwch_ucontext(ucontext);
82 struct iwch_dev *rhp = to_iwch_dev(ibdev);
84 pr_debug("%s ibdev %p\n", __func__, ibdev);
85 cxio_init_ucontext(&rhp->rdev, &context->uctx);
86 INIT_LIST_HEAD(&context->mmaps);
87 spin_lock_init(&context->mmap_lock);
91 static int iwch_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
95 pr_debug("%s ib_cq %p\n", __func__, ib_cq);
96 chp = to_iwch_cq(ib_cq);
98 xa_erase_irq(&chp->rhp->cqs, chp->cq.cqid);
99 atomic_dec(&chp->refcnt);
100 wait_event(chp->wait, !atomic_read(&chp->refcnt));
102 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
107 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev,
108 const struct ib_cq_init_attr *attr,
109 struct ib_udata *udata)
111 int entries = attr->cqe;
112 struct iwch_dev *rhp;
114 struct iwch_create_cq_resp uresp;
115 struct iwch_create_cq_req ureq;
119 pr_debug("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
121 return ERR_PTR(-EINVAL);
123 rhp = to_iwch_dev(ibdev);
124 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
126 return ERR_PTR(-ENOMEM);
129 if (!t3a_device(rhp)) {
130 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
132 return ERR_PTR(-EFAULT);
134 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
138 if (t3a_device(rhp)) {
141 * T3A: Add some fluff to handle extra CQEs inserted
142 * for various errors.
143 * Additional CQE possibilities:
145 * incoming RDMA WRITE Failures
146 * incoming RDMA READ REQUEST FAILUREs
147 * NOTE: We cannot ensure the CQ won't overflow.
151 entries = roundup_pow_of_two(entries);
152 chp->cq.size_log2 = ilog2(entries);
154 if (cxio_create_cq(&rhp->rdev, &chp->cq, !udata)) {
156 return ERR_PTR(-ENOMEM);
159 chp->ibcq.cqe = 1 << chp->cq.size_log2;
160 spin_lock_init(&chp->lock);
161 spin_lock_init(&chp->comp_handler_lock);
162 atomic_set(&chp->refcnt, 1);
163 init_waitqueue_head(&chp->wait);
164 if (xa_store_irq(&rhp->cqs, chp->cq.cqid, chp, GFP_KERNEL)) {
165 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
167 return ERR_PTR(-ENOMEM);
171 struct iwch_mm_entry *mm;
172 struct iwch_ucontext *ucontext = rdma_udata_to_drv_context(
173 udata, struct iwch_ucontext, ibucontext);
175 mm = kmalloc(sizeof *mm, GFP_KERNEL);
177 iwch_destroy_cq(&chp->ibcq, udata);
178 return ERR_PTR(-ENOMEM);
180 uresp.cqid = chp->cq.cqid;
181 uresp.size_log2 = chp->cq.size_log2;
182 spin_lock(&ucontext->mmap_lock);
183 uresp.key = ucontext->key;
184 ucontext->key += PAGE_SIZE;
185 spin_unlock(&ucontext->mmap_lock);
187 mm->addr = virt_to_phys(chp->cq.queue);
188 if (udata->outlen < sizeof uresp) {
190 pr_warn("Warning - downlevel libcxgb3 (non-fatal)\n");
191 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
192 sizeof(struct t3_cqe));
193 resplen = sizeof(struct iwch_create_cq_resp_v0);
195 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
196 sizeof(struct t3_cqe));
197 uresp.memsize = mm->len;
199 resplen = sizeof uresp;
201 if (ib_copy_to_udata(udata, &uresp, resplen)) {
203 iwch_destroy_cq(&chp->ibcq, udata);
204 return ERR_PTR(-EFAULT);
206 insert_mmap(ucontext, mm);
208 pr_debug("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
209 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
210 (unsigned long long)chp->cq.dma_addr);
214 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
217 struct iwch_cq *chp = to_iwch_cq(cq);
218 struct t3_cq oldcq, newcq;
221 pr_debug("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
223 /* We don't downsize... */
227 /* create new t3_cq with new size */
228 cqe = roundup_pow_of_two(cqe+1);
229 newcq.size_log2 = ilog2(cqe);
231 /* Dont allow resize to less than the current wce count */
232 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
236 /* Quiesce all QPs using this CQ */
237 ret = iwch_quiesce_qps(chp);
242 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
248 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
249 sizeof(struct t3_cqe));
251 /* old iwch_qp gets new t3_cq but keeps old cqid */
254 chp->cq.cqid = oldcq.cqid;
256 /* resize new t3_cq to update the HW context */
257 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
262 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
264 /* destroy old t3_cq */
265 oldcq.cqid = newcq.cqid;
266 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
268 pr_err("%s - cxio_destroy_cq failed %d\n", __func__, ret);
271 /* add user hooks here */
274 ret = iwch_resume_qps(chp);
281 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
283 struct iwch_dev *rhp;
285 enum t3_cq_opcode cq_op;
290 chp = to_iwch_cq(ibcq);
292 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
296 if (chp->user_rptr_addr) {
297 if (get_user(rptr, chp->user_rptr_addr))
299 spin_lock_irqsave(&chp->lock, flag);
302 spin_lock_irqsave(&chp->lock, flag);
303 pr_debug("%s rptr 0x%x\n", __func__, chp->cq.rptr);
304 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
305 spin_unlock_irqrestore(&chp->lock, flag);
307 pr_err("Error %d rearming CQID 0x%x\n", err, chp->cq.cqid);
308 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
313 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
315 int len = vma->vm_end - vma->vm_start;
316 u32 key = vma->vm_pgoff << PAGE_SHIFT;
317 struct cxio_rdev *rdev_p;
319 struct iwch_mm_entry *mm;
320 struct iwch_ucontext *ucontext;
323 pr_debug("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
326 if (vma->vm_start & (PAGE_SIZE-1)) {
330 rdev_p = &(to_iwch_dev(context->device)->rdev);
331 ucontext = to_iwch_ucontext(context);
333 mm = remove_mmap(ucontext, key, len);
339 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
340 (addr < (rdev_p->rnic_info.udbell_physbase +
341 rdev_p->rnic_info.udbell_len))) {
344 * Map T3 DB register.
346 if (vma->vm_flags & VM_READ) {
350 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
351 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
352 vma->vm_flags &= ~VM_MAYREAD;
353 ret = io_remap_pfn_range(vma, vma->vm_start,
355 len, vma->vm_page_prot);
359 * Map WQ or CQ contig dma memory...
361 ret = remap_pfn_range(vma, vma->vm_start,
363 len, vma->vm_page_prot);
369 static void iwch_deallocate_pd(struct ib_pd *pd, struct ib_udata *udata)
371 struct iwch_dev *rhp;
374 php = to_iwch_pd(pd);
376 pr_debug("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
377 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
380 static int iwch_allocate_pd(struct ib_pd *pd, struct ib_udata *udata)
382 struct iwch_pd *php = to_iwch_pd(pd);
383 struct ib_device *ibdev = pd->device;
385 struct iwch_dev *rhp;
387 pr_debug("%s ibdev %p\n", __func__, ibdev);
388 rhp = (struct iwch_dev *) ibdev;
389 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
396 struct iwch_alloc_pd_resp resp = {.pdid = php->pdid};
398 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
399 iwch_deallocate_pd(&php->ibpd, udata);
403 pr_debug("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
407 static int iwch_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata)
409 struct iwch_dev *rhp;
413 pr_debug("%s ib_mr %p\n", __func__, ib_mr);
415 mhp = to_iwch_mr(ib_mr);
418 mmid = mhp->attr.stag >> 8;
419 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
422 xa_erase_irq(&rhp->mrs, mmid);
424 kfree((void *) (unsigned long) mhp->kva);
426 ib_umem_release(mhp->umem);
427 pr_debug("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
432 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
434 const u64 total_size = 0xffffffff;
435 const u64 mask = (total_size + PAGE_SIZE - 1) & PAGE_MASK;
436 struct iwch_pd *php = to_iwch_pd(pd);
437 struct iwch_dev *rhp = php->rhp;
440 int shift = 26, npages, ret, i;
442 pr_debug("%s ib_pd %p\n", __func__, pd);
445 * T3 only supports 32 bits of size.
447 if (sizeof(phys_addr_t) > 4) {
448 pr_warn_once("Cannot support dma_mrs on this platform\n");
449 return ERR_PTR(-ENOTSUPP);
452 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
454 return ERR_PTR(-ENOMEM);
458 npages = (total_size + (1ULL << shift) - 1) >> shift;
464 page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
470 for (i = 0; i < npages; i++)
471 page_list[i] = cpu_to_be64((u64)i << shift);
473 pr_debug("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
474 __func__, mask, shift, total_size, npages);
476 ret = iwch_alloc_pbl(mhp, npages);
482 ret = iwch_write_pbl(mhp, page_list, npages, 0);
487 mhp->attr.pdid = php->pdid;
490 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
491 mhp->attr.va_fbo = 0;
492 mhp->attr.page_size = shift - 12;
494 mhp->attr.len = (u32) total_size;
495 mhp->attr.pbl_size = npages;
496 ret = iwch_register_mem(rhp, php, mhp, shift);
510 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
511 u64 virt, int acc, struct ib_udata *udata)
516 struct iwch_dev *rhp;
519 struct iwch_reg_user_mr_resp uresp;
520 struct sg_dma_page_iter sg_iter;
521 pr_debug("%s ib_pd %p\n", __func__, pd);
523 php = to_iwch_pd(pd);
525 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
527 return ERR_PTR(-ENOMEM);
531 mhp->umem = ib_umem_get(udata, start, length, acc, 0);
532 if (IS_ERR(mhp->umem)) {
533 err = PTR_ERR(mhp->umem);
540 n = ib_umem_num_pages(mhp->umem);
542 err = iwch_alloc_pbl(mhp, n);
546 pages = (__be64 *) __get_free_page(GFP_KERNEL);
554 for_each_sg_dma_page(mhp->umem->sg_head.sgl, &sg_iter, mhp->umem->nmap, 0) {
555 pages[i++] = cpu_to_be64(sg_page_iter_dma_address(&sg_iter));
556 if (i == PAGE_SIZE / sizeof *pages) {
557 err = iwch_write_pbl(mhp, pages, i, n);
566 err = iwch_write_pbl(mhp, pages, i, n);
569 free_page((unsigned long) pages);
573 mhp->attr.pdid = php->pdid;
575 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
576 mhp->attr.va_fbo = virt;
577 mhp->attr.page_size = shift - 12;
578 mhp->attr.len = (u32) length;
580 err = iwch_register_mem(rhp, php, mhp, shift);
584 if (udata && !t3a_device(rhp)) {
585 uresp.pbl_addr = (mhp->attr.pbl_addr -
586 rhp->rdev.rnic_info.pbl_base) >> 3;
587 pr_debug("%s user resp pbl_addr 0x%x\n", __func__,
590 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
591 iwch_dereg_mr(&mhp->ibmr, udata);
603 ib_umem_release(mhp->umem);
608 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
609 struct ib_udata *udata)
611 struct iwch_dev *rhp;
618 if (type != IB_MW_TYPE_1)
619 return ERR_PTR(-EINVAL);
621 php = to_iwch_pd(pd);
623 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
625 return ERR_PTR(-ENOMEM);
626 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
632 mhp->attr.pdid = php->pdid;
633 mhp->attr.type = TPT_MW;
634 mhp->attr.stag = stag;
636 mhp->ibmw.rkey = stag;
637 if (xa_insert_irq(&rhp->mrs, mmid, mhp, GFP_KERNEL)) {
638 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
640 return ERR_PTR(-ENOMEM);
642 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
646 static int iwch_dealloc_mw(struct ib_mw *mw)
648 struct iwch_dev *rhp;
652 mhp = to_iwch_mw(mw);
654 mmid = (mw->rkey) >> 8;
655 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
656 xa_erase_irq(&rhp->mrs, mmid);
657 pr_debug("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
662 static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
663 u32 max_num_sg, struct ib_udata *udata)
665 struct iwch_dev *rhp;
672 if (mr_type != IB_MR_TYPE_MEM_REG ||
673 max_num_sg > T3_MAX_FASTREG_DEPTH)
674 return ERR_PTR(-EINVAL);
676 php = to_iwch_pd(pd);
678 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
682 mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
687 ret = iwch_alloc_pbl(mhp, max_num_sg);
690 mhp->attr.pbl_size = max_num_sg;
691 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
692 mhp->attr.pbl_size, mhp->attr.pbl_addr);
695 mhp->attr.pdid = php->pdid;
696 mhp->attr.type = TPT_NON_SHARED_MR;
697 mhp->attr.stag = stag;
700 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
701 ret = xa_insert_irq(&rhp->mrs, mmid, mhp, GFP_KERNEL);
705 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
708 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
720 static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
722 struct iwch_mr *mhp = to_iwch_mr(ibmr);
724 if (unlikely(mhp->npages == mhp->attr.pbl_size))
727 mhp->pages[mhp->npages++] = addr;
732 static int iwch_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
733 int sg_nents, unsigned int *sg_offset)
735 struct iwch_mr *mhp = to_iwch_mr(ibmr);
739 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, iwch_set_page);
742 static int iwch_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata)
744 struct iwch_dev *rhp;
746 struct iwch_qp_attributes attrs;
747 struct iwch_ucontext *ucontext;
749 qhp = to_iwch_qp(ib_qp);
752 attrs.next_state = IWCH_QP_STATE_ERROR;
753 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
754 wait_event(qhp->wait, !qhp->ep);
756 xa_erase_irq(&rhp->qps, qhp->wq.qpid);
758 atomic_dec(&qhp->refcnt);
759 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
761 ucontext = rdma_udata_to_drv_context(udata, struct iwch_ucontext,
763 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
764 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
766 pr_debug("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
767 ib_qp, qhp->wq.qpid, qhp);
772 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
773 struct ib_qp_init_attr *attrs,
774 struct ib_udata *udata)
776 struct iwch_dev *rhp;
779 struct iwch_cq *schp;
780 struct iwch_cq *rchp;
781 struct iwch_create_qp_resp uresp;
782 int wqsize, sqsize, rqsize;
783 struct iwch_ucontext *ucontext;
785 pr_debug("%s ib_pd %p\n", __func__, pd);
786 if (attrs->qp_type != IB_QPT_RC)
787 return ERR_PTR(-EINVAL);
788 php = to_iwch_pd(pd);
790 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
791 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
793 return ERR_PTR(-EINVAL);
795 /* The RQT size must be # of entries + 1 rounded up to a power of two */
796 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
797 if (rqsize == attrs->cap.max_recv_wr)
798 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
800 /* T3 doesn't support RQT depth < 16 */
804 if (rqsize > T3_MAX_RQ_SIZE)
805 return ERR_PTR(-EINVAL);
807 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
808 return ERR_PTR(-EINVAL);
811 * NOTE: The SQ and total WQ sizes don't need to be
812 * a power of two. However, all the code assumes
813 * they are. EG: Q_FREECNT() and friends.
815 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
816 wqsize = roundup_pow_of_two(rqsize + sqsize);
819 * Kernel users need more wq space for fastreg WRs which can take
822 ucontext = rdma_udata_to_drv_context(udata, struct iwch_ucontext,
824 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
825 wqsize = roundup_pow_of_two(rqsize +
826 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
827 pr_debug("%s wqsize %d sqsize %d rqsize %d\n", __func__,
828 wqsize, sqsize, rqsize);
829 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
831 return ERR_PTR(-ENOMEM);
832 qhp->wq.size_log2 = ilog2(wqsize);
833 qhp->wq.rq_size_log2 = ilog2(rqsize);
834 qhp->wq.sq_size_log2 = ilog2(sqsize);
835 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
836 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
838 return ERR_PTR(-ENOMEM);
841 attrs->cap.max_recv_wr = rqsize - 1;
842 attrs->cap.max_send_wr = sqsize;
843 attrs->cap.max_inline_data = T3_MAX_INLINE;
846 qhp->attr.pd = php->pdid;
847 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
848 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
849 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
850 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
851 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
852 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
853 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
854 qhp->attr.state = IWCH_QP_STATE_IDLE;
855 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
858 * XXX - These don't get passed in from the openib user
859 * at create time. The CM sets them via a QP modify.
860 * Need to fix... I think the CM should
862 qhp->attr.enable_rdma_read = 1;
863 qhp->attr.enable_rdma_write = 1;
864 qhp->attr.enable_bind = 1;
865 qhp->attr.max_ord = 1;
866 qhp->attr.max_ird = 1;
868 spin_lock_init(&qhp->lock);
869 init_waitqueue_head(&qhp->wait);
870 atomic_set(&qhp->refcnt, 1);
872 if (xa_store_irq(&rhp->qps, qhp->wq.qpid, qhp, GFP_KERNEL)) {
873 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
874 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
876 return ERR_PTR(-ENOMEM);
881 struct iwch_mm_entry *mm1, *mm2;
883 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
885 iwch_destroy_qp(&qhp->ibqp, udata);
886 return ERR_PTR(-ENOMEM);
889 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
892 iwch_destroy_qp(&qhp->ibqp, udata);
893 return ERR_PTR(-ENOMEM);
896 uresp.qpid = qhp->wq.qpid;
897 uresp.size_log2 = qhp->wq.size_log2;
898 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
899 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
900 spin_lock(&ucontext->mmap_lock);
901 uresp.key = ucontext->key;
902 ucontext->key += PAGE_SIZE;
903 uresp.db_key = ucontext->key;
904 ucontext->key += PAGE_SIZE;
905 spin_unlock(&ucontext->mmap_lock);
906 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
909 iwch_destroy_qp(&qhp->ibqp, udata);
910 return ERR_PTR(-EFAULT);
912 mm1->key = uresp.key;
913 mm1->addr = virt_to_phys(qhp->wq.queue);
914 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
915 insert_mmap(ucontext, mm1);
916 mm2->key = uresp.db_key;
917 mm2->addr = qhp->wq.udb & PAGE_MASK;
918 mm2->len = PAGE_SIZE;
919 insert_mmap(ucontext, mm2);
921 qhp->ibqp.qp_num = qhp->wq.qpid;
922 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",
923 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
924 qhp->wq.qpid, qhp, (unsigned long long)qhp->wq.dma_addr,
925 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
929 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
930 int attr_mask, struct ib_udata *udata)
932 struct iwch_dev *rhp;
934 enum iwch_qp_attr_mask mask = 0;
935 struct iwch_qp_attributes attrs;
937 pr_debug("%s ib_qp %p\n", __func__, ibqp);
939 /* iwarp does not support the RTR state */
940 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
941 attr_mask &= ~IB_QP_STATE;
943 /* Make sure we still have something left to do */
947 memset(&attrs, 0, sizeof attrs);
948 qhp = to_iwch_qp(ibqp);
951 attrs.next_state = iwch_convert_state(attr->qp_state);
952 attrs.enable_rdma_read = (attr->qp_access_flags &
953 IB_ACCESS_REMOTE_READ) ? 1 : 0;
954 attrs.enable_rdma_write = (attr->qp_access_flags &
955 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
956 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
959 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
960 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
961 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
962 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
963 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
965 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
968 void iwch_qp_add_ref(struct ib_qp *qp)
970 pr_debug("%s ib_qp %p\n", __func__, qp);
971 atomic_inc(&(to_iwch_qp(qp)->refcnt));
974 void iwch_qp_rem_ref(struct ib_qp *qp)
976 pr_debug("%s ib_qp %p\n", __func__, qp);
977 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
978 wake_up(&(to_iwch_qp(qp)->wait));
981 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
983 pr_debug("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
984 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
988 static int iwch_query_pkey(struct ib_device *ibdev,
989 u8 port, u16 index, u16 * pkey)
991 pr_debug("%s ibdev %p\n", __func__, ibdev);
996 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
997 int index, union ib_gid *gid)
999 struct iwch_dev *dev;
1001 pr_debug("%s ibdev %p, port %d, index %d, gid %p\n",
1002 __func__, ibdev, port, index, gid);
1003 dev = to_iwch_dev(ibdev);
1004 BUG_ON(port == 0 || port > 2);
1005 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1006 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1010 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1012 struct ethtool_drvinfo info;
1013 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1015 unsigned fw_maj, fw_min, fw_mic;
1017 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1019 next = info.fw_version + 1;
1020 cp = strsep(&next, ".");
1021 sscanf(cp, "%i", &fw_maj);
1022 cp = strsep(&next, ".");
1023 sscanf(cp, "%i", &fw_min);
1024 cp = strsep(&next, ".");
1025 sscanf(cp, "%i", &fw_mic);
1027 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1031 static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1032 struct ib_udata *uhw)
1035 struct iwch_dev *dev;
1037 pr_debug("%s ibdev %p\n", __func__, ibdev);
1039 if (uhw->inlen || uhw->outlen)
1042 dev = to_iwch_dev(ibdev);
1043 memset(props, 0, sizeof *props);
1044 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1045 props->hw_ver = dev->rdev.t3cdev_p->type;
1046 props->fw_ver = fw_vers_string_to_u64(dev);
1047 props->device_cap_flags = dev->device_cap_flags;
1048 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1049 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1050 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1051 props->max_mr_size = dev->attr.max_mr_size;
1052 props->max_qp = dev->attr.max_qps;
1053 props->max_qp_wr = dev->attr.max_wrs;
1054 props->max_send_sge = dev->attr.max_sge_per_wr;
1055 props->max_recv_sge = dev->attr.max_sge_per_wr;
1056 props->max_sge_rd = 1;
1057 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1058 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1059 props->max_cq = dev->attr.max_cqs;
1060 props->max_cqe = dev->attr.max_cqes_per_cq;
1061 props->max_mr = dev->attr.max_mem_regs;
1062 props->max_pd = dev->attr.max_pds;
1063 props->local_ca_ack_delay = 0;
1064 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1069 static int iwch_query_port(struct ib_device *ibdev,
1070 u8 port, struct ib_port_attr *props)
1072 struct iwch_dev *dev;
1073 struct net_device *netdev;
1074 struct in_device *inetdev;
1076 pr_debug("%s ibdev %p\n", __func__, ibdev);
1078 dev = to_iwch_dev(ibdev);
1079 netdev = dev->rdev.port_info.lldevs[port-1];
1081 /* props being zeroed by the caller, avoid zeroing it here */
1082 props->max_mtu = IB_MTU_4096;
1083 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
1085 if (!netif_carrier_ok(netdev))
1086 props->state = IB_PORT_DOWN;
1088 inetdev = in_dev_get(netdev);
1090 if (inetdev->ifa_list)
1091 props->state = IB_PORT_ACTIVE;
1093 props->state = IB_PORT_INIT;
1094 in_dev_put(inetdev);
1096 props->state = IB_PORT_INIT;
1099 props->port_cap_flags =
1101 IB_PORT_SNMP_TUNNEL_SUP |
1102 IB_PORT_REINIT_SUP |
1103 IB_PORT_DEVICE_MGMT_SUP |
1104 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1105 props->gid_tbl_len = 1;
1106 props->pkey_tbl_len = 1;
1107 props->active_width = 2;
1108 props->active_speed = IB_SPEED_DDR;
1109 props->max_msg_sz = -1;
1114 static ssize_t hw_rev_show(struct device *dev,
1115 struct device_attribute *attr, char *buf)
1117 struct iwch_dev *iwch_dev =
1118 rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
1120 pr_debug("%s dev 0x%p\n", __func__, dev);
1121 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1123 static DEVICE_ATTR_RO(hw_rev);
1125 static ssize_t hca_type_show(struct device *dev,
1126 struct device_attribute *attr, char *buf)
1128 struct iwch_dev *iwch_dev =
1129 rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
1130 struct ethtool_drvinfo info;
1131 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1133 pr_debug("%s dev 0x%p\n", __func__, dev);
1134 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1135 return sprintf(buf, "%s\n", info.driver);
1137 static DEVICE_ATTR_RO(hca_type);
1139 static ssize_t board_id_show(struct device *dev,
1140 struct device_attribute *attr, char *buf)
1142 struct iwch_dev *iwch_dev =
1143 rdma_device_to_drv_device(dev, struct iwch_dev, ibdev);
1145 pr_debug("%s dev 0x%p\n", __func__, dev);
1146 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1147 iwch_dev->rdev.rnic_info.pdev->device);
1149 static DEVICE_ATTR_RO(board_id);
1180 static const char * const names[] = {
1181 [IPINRECEIVES] = "ipInReceives",
1182 [IPINHDRERRORS] = "ipInHdrErrors",
1183 [IPINADDRERRORS] = "ipInAddrErrors",
1184 [IPINUNKNOWNPROTOS] = "ipInUnknownProtos",
1185 [IPINDISCARDS] = "ipInDiscards",
1186 [IPINDELIVERS] = "ipInDelivers",
1187 [IPOUTREQUESTS] = "ipOutRequests",
1188 [IPOUTDISCARDS] = "ipOutDiscards",
1189 [IPOUTNOROUTES] = "ipOutNoRoutes",
1190 [IPREASMTIMEOUT] = "ipReasmTimeout",
1191 [IPREASMREQDS] = "ipReasmReqds",
1192 [IPREASMOKS] = "ipReasmOKs",
1193 [IPREASMFAILS] = "ipReasmFails",
1194 [TCPACTIVEOPENS] = "tcpActiveOpens",
1195 [TCPPASSIVEOPENS] = "tcpPassiveOpens",
1196 [TCPATTEMPTFAILS] = "tcpAttemptFails",
1197 [TCPESTABRESETS] = "tcpEstabResets",
1198 [TCPCURRESTAB] = "tcpCurrEstab",
1199 [TCPINSEGS] = "tcpInSegs",
1200 [TCPOUTSEGS] = "tcpOutSegs",
1201 [TCPRETRANSSEGS] = "tcpRetransSegs",
1202 [TCPINERRS] = "tcpInErrs",
1203 [TCPOUTRSTS] = "tcpOutRsts",
1204 [TCPRTOMIN] = "tcpRtoMin",
1205 [TCPRTOMAX] = "tcpRtoMax",
1208 static struct rdma_hw_stats *iwch_alloc_stats(struct ib_device *ibdev,
1211 BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
1213 /* Our driver only supports device level stats */
1217 return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
1218 RDMA_HW_STATS_DEFAULT_LIFESPAN);
1221 static int iwch_get_mib(struct ib_device *ibdev, struct rdma_hw_stats *stats,
1224 struct iwch_dev *dev;
1225 struct tp_mib_stats m;
1228 if (port != 0 || !stats)
1231 pr_debug("%s ibdev %p\n", __func__, ibdev);
1232 dev = to_iwch_dev(ibdev);
1233 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1237 stats->value[IPINRECEIVES] = ((u64)m.ipInReceive_hi << 32) + m.ipInReceive_lo;
1238 stats->value[IPINHDRERRORS] = ((u64)m.ipInHdrErrors_hi << 32) + m.ipInHdrErrors_lo;
1239 stats->value[IPINADDRERRORS] = ((u64)m.ipInAddrErrors_hi << 32) + m.ipInAddrErrors_lo;
1240 stats->value[IPINUNKNOWNPROTOS] = ((u64)m.ipInUnknownProtos_hi << 32) + m.ipInUnknownProtos_lo;
1241 stats->value[IPINDISCARDS] = ((u64)m.ipInDiscards_hi << 32) + m.ipInDiscards_lo;
1242 stats->value[IPINDELIVERS] = ((u64)m.ipInDelivers_hi << 32) + m.ipInDelivers_lo;
1243 stats->value[IPOUTREQUESTS] = ((u64)m.ipOutRequests_hi << 32) + m.ipOutRequests_lo;
1244 stats->value[IPOUTDISCARDS] = ((u64)m.ipOutDiscards_hi << 32) + m.ipOutDiscards_lo;
1245 stats->value[IPOUTNOROUTES] = ((u64)m.ipOutNoRoutes_hi << 32) + m.ipOutNoRoutes_lo;
1246 stats->value[IPREASMTIMEOUT] = m.ipReasmTimeout;
1247 stats->value[IPREASMREQDS] = m.ipReasmReqds;
1248 stats->value[IPREASMOKS] = m.ipReasmOKs;
1249 stats->value[IPREASMFAILS] = m.ipReasmFails;
1250 stats->value[TCPACTIVEOPENS] = m.tcpActiveOpens;
1251 stats->value[TCPPASSIVEOPENS] = m.tcpPassiveOpens;
1252 stats->value[TCPATTEMPTFAILS] = m.tcpAttemptFails;
1253 stats->value[TCPESTABRESETS] = m.tcpEstabResets;
1254 stats->value[TCPCURRESTAB] = m.tcpOutRsts;
1255 stats->value[TCPINSEGS] = m.tcpCurrEstab;
1256 stats->value[TCPOUTSEGS] = ((u64)m.tcpInSegs_hi << 32) + m.tcpInSegs_lo;
1257 stats->value[TCPRETRANSSEGS] = ((u64)m.tcpOutSegs_hi << 32) + m.tcpOutSegs_lo;
1258 stats->value[TCPINERRS] = ((u64)m.tcpRetransSeg_hi << 32) + m.tcpRetransSeg_lo,
1259 stats->value[TCPOUTRSTS] = ((u64)m.tcpInErrs_hi << 32) + m.tcpInErrs_lo;
1260 stats->value[TCPRTOMIN] = m.tcpRtoMin;
1261 stats->value[TCPRTOMAX] = m.tcpRtoMax;
1263 return stats->num_counters;
1266 static struct attribute *iwch_class_attributes[] = {
1267 &dev_attr_hw_rev.attr,
1268 &dev_attr_hca_type.attr,
1269 &dev_attr_board_id.attr,
1273 static const struct attribute_group iwch_attr_group = {
1274 .attrs = iwch_class_attributes,
1277 static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1278 struct ib_port_immutable *immutable)
1280 struct ib_port_attr attr;
1283 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
1285 err = ib_query_port(ibdev, port_num, &attr);
1289 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1290 immutable->gid_tbl_len = attr.gid_tbl_len;
1295 static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str)
1297 struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
1298 struct ethtool_drvinfo info;
1299 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1301 pr_debug("%s dev 0x%p\n", __func__, iwch_dev);
1302 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1303 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
1306 static const struct ib_device_ops iwch_dev_ops = {
1307 .alloc_hw_stats = iwch_alloc_stats,
1308 .alloc_mr = iwch_alloc_mr,
1309 .alloc_mw = iwch_alloc_mw,
1310 .alloc_pd = iwch_allocate_pd,
1311 .alloc_ucontext = iwch_alloc_ucontext,
1312 .create_cq = iwch_create_cq,
1313 .create_qp = iwch_create_qp,
1314 .dealloc_mw = iwch_dealloc_mw,
1315 .dealloc_pd = iwch_deallocate_pd,
1316 .dealloc_ucontext = iwch_dealloc_ucontext,
1317 .dereg_mr = iwch_dereg_mr,
1318 .destroy_cq = iwch_destroy_cq,
1319 .destroy_qp = iwch_destroy_qp,
1320 .get_dev_fw_str = get_dev_fw_ver_str,
1321 .get_dma_mr = iwch_get_dma_mr,
1322 .get_hw_stats = iwch_get_mib,
1323 .get_port_immutable = iwch_port_immutable,
1324 .map_mr_sg = iwch_map_mr_sg,
1326 .modify_qp = iwch_ib_modify_qp,
1327 .poll_cq = iwch_poll_cq,
1328 .post_recv = iwch_post_receive,
1329 .post_send = iwch_post_send,
1330 .query_device = iwch_query_device,
1331 .query_gid = iwch_query_gid,
1332 .query_pkey = iwch_query_pkey,
1333 .query_port = iwch_query_port,
1334 .reg_user_mr = iwch_reg_user_mr,
1335 .req_notify_cq = iwch_arm_cq,
1336 .resize_cq = iwch_resize_cq,
1337 INIT_RDMA_OBJ_SIZE(ib_pd, iwch_pd, ibpd),
1338 INIT_RDMA_OBJ_SIZE(ib_ucontext, iwch_ucontext, ibucontext),
1341 int iwch_register_device(struct iwch_dev *dev)
1345 pr_debug("%s iwch_dev %p\n", __func__, dev);
1346 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1347 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1348 dev->ibdev.owner = THIS_MODULE;
1349 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1350 IB_DEVICE_MEM_WINDOW |
1351 IB_DEVICE_MEM_MGT_EXTENSIONS;
1353 /* cxgb3 supports STag 0. */
1354 dev->ibdev.local_dma_lkey = 0;
1356 dev->ibdev.uverbs_cmd_mask =
1357 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1358 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1359 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1360 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1361 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1362 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1363 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1364 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1365 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1366 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1367 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1368 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1369 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1370 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1371 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1372 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1373 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1374 dev->ibdev.node_type = RDMA_NODE_RNIC;
1375 BUILD_BUG_ON(sizeof(IWCH_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
1376 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1377 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1378 dev->ibdev.num_comp_vectors = 1;
1379 dev->ibdev.dev.parent = &dev->rdev.rnic_info.pdev->dev;
1380 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1382 dev->ibdev.iwcm = kzalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1383 if (!dev->ibdev.iwcm)
1386 dev->ibdev.iwcm->connect = iwch_connect;
1387 dev->ibdev.iwcm->accept = iwch_accept_cr;
1388 dev->ibdev.iwcm->reject = iwch_reject_cr;
1389 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1390 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1391 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1392 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1393 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1394 memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
1395 sizeof(dev->ibdev.iwcm->ifname));
1397 dev->ibdev.driver_id = RDMA_DRIVER_CXGB3;
1398 rdma_set_device_sysfs_group(&dev->ibdev, &iwch_attr_group);
1399 ib_set_device_ops(&dev->ibdev, &iwch_dev_ops);
1400 ret = ib_register_device(&dev->ibdev, "cxgb3_%d");
1402 kfree(dev->ibdev.iwcm);
1406 void iwch_unregister_device(struct iwch_dev *dev)
1408 pr_debug("%s iwch_dev %p\n", __func__, dev);
1409 ib_unregister_device(&dev->ibdev);
1410 kfree(dev->ibdev.iwcm);