/* * Copyright (c) 2006 Chelsio, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "cxio_hal.h" #include "iwch.h" #include "iwch_provider.h" #include "iwch_cm.h" #include "iwch_user.h" #include "common.h" static struct ib_ah *iwch_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr) { return ERR_PTR(-ENOSYS); } static int iwch_ah_destroy(struct ib_ah *ah) { return -ENOSYS; } static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { return -ENOSYS; } static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { return -ENOSYS; } static int iwch_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh, struct ib_mad *in_mad, struct ib_mad *out_mad) { return -ENOSYS; } static int iwch_dealloc_ucontext(struct ib_ucontext *context) { struct iwch_dev *rhp = to_iwch_dev(context->device); struct iwch_ucontext *ucontext = to_iwch_ucontext(context); struct iwch_mm_entry *mm, *tmp; PDBG("%s context %p\n", __func__, context); list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) kfree(mm); cxio_release_ucontext(&rhp->rdev, &ucontext->uctx); kfree(ucontext); return 0; } static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct iwch_ucontext *context; struct iwch_dev *rhp = to_iwch_dev(ibdev); PDBG("%s ibdev %p\n", __func__, ibdev); context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) return ERR_PTR(-ENOMEM); cxio_init_ucontext(&rhp->rdev, &context->uctx); INIT_LIST_HEAD(&context->mmaps); spin_lock_init(&context->mmap_lock); return &context->ibucontext; } static int iwch_destroy_cq(struct ib_cq *ib_cq) { struct iwch_cq *chp; PDBG("%s ib_cq %p\n", __func__, ib_cq); chp = to_iwch_cq(ib_cq); remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid); atomic_dec(&chp->refcnt); wait_event(chp->wait, !atomic_read(&chp->refcnt)); cxio_destroy_cq(&chp->rhp->rdev, &chp->cq); kfree(chp); return 0; } static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector, struct ib_ucontext *ib_context, struct ib_udata *udata) { struct iwch_dev *rhp; struct iwch_cq *chp; struct iwch_create_cq_resp uresp; struct iwch_create_cq_req ureq; struct iwch_ucontext *ucontext = NULL; static int warned; size_t resplen; PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries); rhp = to_iwch_dev(ibdev); chp = kzalloc(sizeof(*chp), GFP_KERNEL); if (!chp) return ERR_PTR(-ENOMEM); if (ib_context) { ucontext = to_iwch_ucontext(ib_context); if (!t3a_device(rhp)) { if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) { kfree(chp); return ERR_PTR(-EFAULT); } chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr; } } if (t3a_device(rhp)) { /* * T3A: Add some fluff to handle extra CQEs inserted * for various errors. * Additional CQE possibilities: * TERMINATE, * incoming RDMA WRITE Failures * incoming RDMA READ REQUEST FAILUREs * NOTE: We cannot ensure the CQ won't overflow. */ entries += 16; } entries = roundup_pow_of_two(entries); chp->cq.size_log2 = ilog2(entries); if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) { kfree(chp); return ERR_PTR(-ENOMEM); } chp->rhp = rhp; chp->ibcq.cqe = 1 << chp->cq.size_log2; spin_lock_init(&chp->lock); spin_lock_init(&chp->comp_handler_lock); atomic_set(&chp->refcnt, 1); init_waitqueue_head(&chp->wait); if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) { cxio_destroy_cq(&chp->rhp->rdev, &chp->cq); kfree(chp); return ERR_PTR(-ENOMEM); } if (ucontext) { struct iwch_mm_entry *mm; mm = kmalloc(sizeof *mm, GFP_KERNEL); if (!mm) { iwch_destroy_cq(&chp->ibcq); return ERR_PTR(-ENOMEM); } uresp.cqid = chp->cq.cqid; uresp.size_log2 = chp->cq.size_log2; spin_lock(&ucontext->mmap_lock); uresp.key = ucontext->key; ucontext->key += PAGE_SIZE; spin_unlock(&ucontext->mmap_lock); mm->key = uresp.key; mm->addr = virt_to_phys(chp->cq.queue); if (udata->outlen < sizeof uresp) { if (!warned++) printk(KERN_WARNING MOD "Warning - " "downlevel libcxgb3 (non-fatal).\n"); mm->len = PAGE_ALIGN((1UL << uresp.size_log2) * sizeof(struct t3_cqe)); resplen = sizeof(struct iwch_create_cq_resp_v0); } else { mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) * sizeof(struct t3_cqe)); uresp.memsize = mm->len; resplen = sizeof uresp; } if (ib_copy_to_udata(udata, &uresp, resplen)) { kfree(mm); iwch_destroy_cq(&chp->ibcq); return ERR_PTR(-EFAULT); } insert_mmap(ucontext, mm); } PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n", chp->cq.cqid, chp, (1 << chp->cq.size_log2), (unsigned long long) chp->cq.dma_addr); return &chp->ibcq; } static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata) { #ifdef notyet struct iwch_cq *chp = to_iwch_cq(cq); struct t3_cq oldcq, newcq; int ret; PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe); /* We don't downsize... */ if (cqe <= cq->cqe) return 0; /* create new t3_cq with new size */ cqe = roundup_pow_of_two(cqe+1); newcq.size_log2 = ilog2(cqe); /* Dont allow resize to less than the current wce count */ if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) { return -ENOMEM; } /* Quiesce all QPs using this CQ */ ret = iwch_quiesce_qps(chp); if (ret) { return ret; } ret = cxio_create_cq(&chp->rhp->rdev, &newcq); if (ret) { return ret; } /* copy CQEs */ memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) * sizeof(struct t3_cqe)); /* old iwch_qp gets new t3_cq but keeps old cqid */ oldcq = chp->cq; chp->cq = newcq; chp->cq.cqid = oldcq.cqid; /* resize new t3_cq to update the HW context */ ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq); if (ret) { chp->cq = oldcq; return ret; } chp->ibcq.cqe = (1<cq.size_log2) - 1; /* destroy old t3_cq */ oldcq.cqid = newcq.cqid; ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq); if (ret) { printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n", __func__, ret); } /* add user hooks here */ /* resume qps */ ret = iwch_resume_qps(chp); return ret; #else return -ENOSYS; #endif } static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) { struct iwch_dev *rhp; struct iwch_cq *chp; enum t3_cq_opcode cq_op; int err; unsigned long flag; u32 rptr; chp = to_iwch_cq(ibcq); rhp = chp->rhp; if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED) cq_op = CQ_ARM_SE; else cq_op = CQ_ARM_AN; if (chp->user_rptr_addr) { if (get_user(rptr, chp->user_rptr_addr)) return -EFAULT; spin_lock_irqsave(&chp->lock, flag); chp->cq.rptr = rptr; } else spin_lock_irqsave(&chp->lock, flag); PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr); err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0); spin_unlock_irqrestore(&chp->lock, flag); if (err < 0) printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err, chp->cq.cqid); if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS)) err = 0; return err; } static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) { int len = vma->vm_end - vma->vm_start; u32 key = vma->vm_pgoff << PAGE_SHIFT; struct cxio_rdev *rdev_p; int ret = 0; struct iwch_mm_entry *mm; struct iwch_ucontext *ucontext; u64 addr; PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff, key, len); if (vma->vm_start & (PAGE_SIZE-1)) { return -EINVAL; } rdev_p = &(to_iwch_dev(context->device)->rdev); ucontext = to_iwch_ucontext(context); mm = remove_mmap(ucontext, key, len); if (!mm) return -EINVAL; addr = mm->addr; kfree(mm); if ((addr >= rdev_p->rnic_info.udbell_physbase) && (addr < (rdev_p->rnic_info.udbell_physbase + rdev_p->rnic_info.udbell_len))) { /* * Map T3 DB register. */ if (vma->vm_flags & VM_READ) { return -EPERM; } vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; vma->vm_flags &= ~VM_MAYREAD; ret = io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, len, vma->vm_page_prot); } else { /* * Map WQ or CQ contig dma memory... */ ret = remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, len, vma->vm_page_prot); } return ret; } static int iwch_deallocate_pd(struct ib_pd *pd) { struct iwch_dev *rhp; struct iwch_pd *php; php = to_iwch_pd(pd); rhp = php->rhp; PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid); cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid); kfree(php); return 0; } static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct iwch_pd *php; u32 pdid; struct iwch_dev *rhp; PDBG("%s ibdev %p\n", __func__, ibdev); rhp = (struct iwch_dev *) ibdev; pdid = cxio_hal_get_pdid(rhp->rdev.rscp); if (!pdid) return ERR_PTR(-EINVAL); php = kzalloc(sizeof(*php), GFP_KERNEL); if (!php) { cxio_hal_put_pdid(rhp->rdev.rscp, pdid); return ERR_PTR(-ENOMEM); } php->pdid = pdid; php->rhp = rhp; if (context) { if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) { iwch_deallocate_pd(&php->ibpd); return ERR_PTR(-EFAULT); } } PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php); return &php->ibpd; } static int iwch_dereg_mr(struct ib_mr *ib_mr) { struct iwch_dev *rhp; struct iwch_mr *mhp; u32 mmid; PDBG("%s ib_mr %p\n", __func__, ib_mr); /* There can be no memory windows */ if (atomic_read(&ib_mr->usecnt)) return -EINVAL; mhp = to_iwch_mr(ib_mr); rhp = mhp->rhp; mmid = mhp->attr.stag >> 8; cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, mhp->attr.pbl_addr); iwch_free_pbl(mhp); remove_handle(rhp, &rhp->mmidr, mmid); if (mhp->kva) kfree((void *) (unsigned long) mhp->kva); if (mhp->umem) ib_umem_release(mhp->umem); PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp); kfree(mhp); return 0; } static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd, struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, u64 *iova_start) { __be64 *page_list; int shift; u64 total_size; int npages; struct iwch_dev *rhp; struct iwch_pd *php; struct iwch_mr *mhp; int ret; PDBG("%s ib_pd %p\n", __func__, pd); php = to_iwch_pd(pd); rhp = php->rhp; mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); if (!mhp) return ERR_PTR(-ENOMEM); mhp->rhp = rhp; /* First check that we have enough alignment */ if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) { ret = -EINVAL; goto err; } if (num_phys_buf > 1 && ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) { ret = -EINVAL; goto err; } ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start, &total_size, &npages, &shift, &page_list); if (ret) goto err; ret = iwch_alloc_pbl(mhp, npages); if (ret) { kfree(page_list); goto err_pbl; } ret = iwch_write_pbl(mhp, page_list, npages, 0); kfree(page_list); if (ret) goto err_pbl; mhp->attr.pdid = php->pdid; mhp->attr.zbva = 0; mhp->attr.perms = iwch_ib_to_tpt_access(acc); mhp->attr.va_fbo = *iova_start; mhp->attr.page_size = shift - 12; mhp->attr.len = (u32) total_size; mhp->attr.pbl_size = npages; ret = iwch_register_mem(rhp, php, mhp, shift); if (ret) goto err_pbl; return &mhp->ibmr; err_pbl: iwch_free_pbl(mhp); err: kfree(mhp); return ERR_PTR(ret); } static int iwch_reregister_phys_mem(struct ib_mr *mr, int mr_rereg_mask, struct ib_pd *pd, struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, u64 * iova_start) { struct iwch_mr mh, *mhp; struct iwch_pd *php; struct iwch_dev *rhp; __be64 *page_list = NULL; int shift = 0; u64 total_size; int npages; int ret; PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd); /* There can be no memory windows */ if (atomic_read(&mr->usecnt)) return -EINVAL; mhp = to_iwch_mr(mr); rhp = mhp->rhp; php = to_iwch_pd(mr->pd); /* make sure we are on the same adapter */ if (rhp != php->rhp) return -EINVAL; memcpy(&mh, mhp, sizeof *mhp); if (mr_rereg_mask & IB_MR_REREG_PD) php = to_iwch_pd(pd); if (mr_rereg_mask & IB_MR_REREG_ACCESS) mh.attr.perms = iwch_ib_to_tpt_access(acc); if (mr_rereg_mask & IB_MR_REREG_TRANS) { ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start, &total_size, &npages, &shift, &page_list); if (ret) return ret; } ret = iwch_reregister_mem(rhp, php, &mh, shift, npages); kfree(page_list); if (ret) { return ret; } if (mr_rereg_mask & IB_MR_REREG_PD) mhp->attr.pdid = php->pdid; if (mr_rereg_mask & IB_MR_REREG_ACCESS) mhp->attr.perms = iwch_ib_to_tpt_access(acc); if (mr_rereg_mask & IB_MR_REREG_TRANS) { mhp->attr.zbva = 0; mhp->attr.va_fbo = *iova_start; mhp->attr.page_size = shift - 12; mhp->attr.len = (u32) total_size; mhp->attr.pbl_size = npages; } return 0; } static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u64 virt, int acc, struct ib_udata *udata) { __be64 *pages; int shift, n, len; int i, j, k; int err = 0; struct ib_umem_chunk *chunk; struct iwch_dev *rhp; struct iwch_pd *php; struct iwch_mr *mhp; struct iwch_reg_user_mr_resp uresp; PDBG("%s ib_pd %p\n", __func__, pd); php = to_iwch_pd(pd); rhp = php->rhp; mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); if (!mhp) return ERR_PTR(-ENOMEM); mhp->rhp = rhp; mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); if (IS_ERR(mhp->umem)) { err = PTR_ERR(mhp->umem); kfree(mhp); return ERR_PTR(err); } shift = ffs(mhp->umem->page_size) - 1; n = 0; list_for_each_entry(chunk, &mhp->umem->chunk_list, list) n += chunk->nents; err = iwch_alloc_pbl(mhp, n); if (err) goto err; pages = (__be64 *) __get_free_page(GFP_KERNEL); if (!pages) { err = -ENOMEM; goto err_pbl; } i = n = 0; list_for_each_entry(chunk, &mhp->umem->chunk_list, list) for (j = 0; j < chunk->nmap; ++j) { len = sg_dma_len(&chunk->page_list[j]) >> shift; for (k = 0; k < len; ++k) { pages[i++] = cpu_to_be64(sg_dma_address( &chunk->page_list[j]) + mhp->umem->page_size * k); if (i == PAGE_SIZE / sizeof *pages) { err = iwch_write_pbl(mhp, pages, i, n); if (err) goto pbl_done; n += i; i = 0; } } } if (i) err = iwch_write_pbl(mhp, pages, i, n); pbl_done: free_page((unsigned long) pages); if (err) goto err_pbl; mhp->attr.pdid = php->pdid; mhp->attr.zbva = 0; mhp->attr.perms = iwch_ib_to_tpt_access(acc); mhp->attr.va_fbo = virt; mhp->attr.page_size = shift - 12; mhp->attr.len = (u32) length; err = iwch_register_mem(rhp, php, mhp, shift); if (err) goto err_pbl; if (udata && !t3a_device(rhp)) { uresp.pbl_addr = (mhp->attr.pbl_addr - rhp->rdev.rnic_info.pbl_base) >> 3; PDBG("%s user resp pbl_addr 0x%x\n", __func__, uresp.pbl_addr); if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) { iwch_dereg_mr(&mhp->ibmr); err = -EFAULT; goto err; } } return &mhp->ibmr; err_pbl: iwch_free_pbl(mhp); err: ib_umem_release(mhp->umem); kfree(mhp); return ERR_PTR(err); } static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc) { struct ib_phys_buf bl; u64 kva; struct ib_mr *ibmr; PDBG("%s ib_pd %p\n", __func__, pd); /* * T3 only supports 32 bits of size. */ bl.size = 0xffffffff; bl.addr = 0; kva = 0; ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva); return ibmr; } static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) { struct iwch_dev *rhp; struct iwch_pd *php; struct iwch_mw *mhp; u32 mmid; u32 stag = 0; int ret; if (type != IB_MW_TYPE_1) return ERR_PTR(-EINVAL); php = to_iwch_pd(pd); rhp = php->rhp; mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); if (!mhp) return ERR_PTR(-ENOMEM); ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid); if (ret) { kfree(mhp); return ERR_PTR(ret); } mhp->rhp = rhp; mhp->attr.pdid = php->pdid; mhp->attr.type = TPT_MW; mhp->attr.stag = stag; mmid = (stag) >> 8; mhp->ibmw.rkey = stag; if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) { cxio_deallocate_window(&rhp->rdev, mhp->attr.stag); kfree(mhp); return ERR_PTR(-ENOMEM); } PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag); return &(mhp->ibmw); } static int iwch_dealloc_mw(struct ib_mw *mw) { struct iwch_dev *rhp; struct iwch_mw *mhp; u32 mmid; mhp = to_iwch_mw(mw); rhp = mhp->rhp; mmid = (mw->rkey) >> 8; cxio_deallocate_window(&rhp->rdev, mhp->attr.stag); remove_handle(rhp, &rhp->mmidr, mmid); PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp); kfree(mhp); return 0; } static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth) { struct iwch_dev *rhp; struct iwch_pd *php; struct iwch_mr *mhp; u32 mmid; u32 stag = 0; int ret = 0; php = to_iwch_pd(pd); rhp = php->rhp; mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); if (!mhp) goto err; mhp->rhp = rhp; ret = iwch_alloc_pbl(mhp, pbl_depth); if (ret) goto err1; mhp->attr.pbl_size = pbl_depth; ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid, mhp->attr.pbl_size, mhp->attr.pbl_addr); if (ret) goto err2; mhp->attr.pdid = php->pdid; mhp->attr.type = TPT_NON_SHARED_MR; mhp->attr.stag = stag; mhp->attr.state = 1; mmid = (stag) >> 8; mhp->ibmr.rkey = mhp->ibmr.lkey = stag; if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) goto err3; PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag); return &(mhp->ibmr); err3: cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size, mhp->attr.pbl_addr); err2: iwch_free_pbl(mhp); err1: kfree(mhp); err: return ERR_PTR(ret); } static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl( struct ib_device *device, int page_list_len) { struct ib_fast_reg_page_list *page_list; page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64), GFP_KERNEL); if (!page_list) return ERR_PTR(-ENOMEM); page_list->page_list = (u64 *)(page_list + 1); page_list->max_page_list_len = page_list_len; return page_list; } static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list) { kfree(page_list); } static int iwch_destroy_qp(struct ib_qp *ib_qp) { struct iwch_dev *rhp; struct iwch_qp *qhp; struct iwch_qp_attributes attrs; struct iwch_ucontext *ucontext; qhp = to_iwch_qp(ib_qp); rhp = qhp->rhp; attrs.next_state = IWCH_QP_STATE_ERROR; iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0); wait_event(qhp->wait, !qhp->ep); remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid); atomic_dec(&qhp->refcnt); wait_event(qhp->wait, !atomic_read(&qhp->refcnt)); ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context) : NULL; cxio_destroy_qp(&rhp->rdev, &qhp->wq, ucontext ? &ucontext->uctx : &rhp->rdev.uctx); PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__, ib_qp, qhp->wq.qpid, qhp); kfree(qhp); return 0; } static struct ib_qp *iwch_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs, struct ib_udata *udata) { struct iwch_dev *rhp; struct iwch_qp *qhp; struct iwch_pd *php; struct iwch_cq *schp; struct iwch_cq *rchp; struct iwch_create_qp_resp uresp; int wqsize, sqsize, rqsize; struct iwch_ucontext *ucontext; PDBG("%s ib_pd %p\n", __func__, pd); if (attrs->qp_type != IB_QPT_RC) return ERR_PTR(-EINVAL); php = to_iwch_pd(pd); rhp = php->rhp; schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid); rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid); if (!schp || !rchp) return ERR_PTR(-EINVAL); /* The RQT size must be # of entries + 1 rounded up to a power of two */ rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr); if (rqsize == attrs->cap.max_recv_wr) rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1); /* T3 doesn't support RQT depth < 16 */ if (rqsize < 16) rqsize = 16; if (rqsize > T3_MAX_RQ_SIZE) return ERR_PTR(-EINVAL); if (attrs->cap.max_inline_data > T3_MAX_INLINE) return ERR_PTR(-EINVAL); /* * NOTE: The SQ and total WQ sizes don't need to be * a power of two. However, all the code assumes * they are. EG: Q_FREECNT() and friends. */ sqsize = roundup_pow_of_two(attrs->cap.max_send_wr); wqsize = roundup_pow_of_two(rqsize + sqsize); /* * Kernel users need more wq space for fastreg WRs which can take * 2 WR fragments. */ ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL; if (!ucontext && wqsize < (rqsize + (2 * sqsize))) wqsize = roundup_pow_of_two(rqsize + roundup_pow_of_two(attrs->cap.max_send_wr * 2)); PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__, wqsize, sqsize, rqsize); qhp = kzalloc(sizeof(*qhp), GFP_KERNEL); if (!qhp) return ERR_PTR(-ENOMEM); qhp->wq.size_log2 = ilog2(wqsize); qhp->wq.rq_size_log2 = ilog2(rqsize); qhp->wq.sq_size_log2 = ilog2(sqsize); if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq, ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) { kfree(qhp); return ERR_PTR(-ENOMEM); } attrs->cap.max_recv_wr = rqsize - 1; attrs->cap.max_send_wr = sqsize; attrs->cap.max_inline_data = T3_MAX_INLINE; qhp->rhp = rhp; qhp->attr.pd = php->pdid; qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid; qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid; qhp->attr.sq_num_entries = attrs->cap.max_send_wr; qhp->attr.rq_num_entries = attrs->cap.max_recv_wr; qhp->attr.sq_max_sges = attrs->cap.max_send_sge; qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge; qhp->attr.rq_max_sges = attrs->cap.max_recv_sge; qhp->attr.state = IWCH_QP_STATE_IDLE; qhp->attr.next_state = IWCH_QP_STATE_IDLE; /* * XXX - These don't get passed in from the openib user * at create time. The CM sets them via a QP modify. * Need to fix... I think the CM should */ qhp->attr.enable_rdma_read = 1; qhp->attr.enable_rdma_write = 1; qhp->attr.enable_bind = 1; qhp->attr.max_ord = 1; qhp->attr.max_ird = 1; spin_lock_init(&qhp->lock); init_waitqueue_head(&qhp->wait); atomic_set(&qhp->refcnt, 1); if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) { cxio_destroy_qp(&rhp->rdev, &qhp->wq, ucontext ? &ucontext->uctx : &rhp->rdev.uctx); kfree(qhp); return ERR_PTR(-ENOMEM); } if (udata) { struct iwch_mm_entry *mm1, *mm2; mm1 = kmalloc(sizeof *mm1, GFP_KERNEL); if (!mm1) { iwch_destroy_qp(&qhp->ibqp); return ERR_PTR(-ENOMEM); } mm2 = kmalloc(sizeof *mm2, GFP_KERNEL); if (!mm2) { kfree(mm1); iwch_destroy_qp(&qhp->ibqp); return ERR_PTR(-ENOMEM); } uresp.qpid = qhp->wq.qpid; uresp.size_log2 = qhp->wq.size_log2; uresp.sq_size_log2 = qhp->wq.sq_size_log2; uresp.rq_size_log2 = qhp->wq.rq_size_log2; spin_lock(&ucontext->mmap_lock); uresp.key = ucontext->key; ucontext->key += PAGE_SIZE; uresp.db_key = ucontext->key; ucontext->key += PAGE_SIZE; spin_unlock(&ucontext->mmap_lock); if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) { kfree(mm1); kfree(mm2); iwch_destroy_qp(&qhp->ibqp); return ERR_PTR(-EFAULT); } mm1->key = uresp.key; mm1->addr = virt_to_phys(qhp->wq.queue); mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr)); insert_mmap(ucontext, mm1); mm2->key = uresp.db_key; mm2->addr = qhp->wq.udb & PAGE_MASK; mm2->len = PAGE_SIZE; insert_mmap(ucontext, mm2); } qhp->ibqp.qp_num = qhp->wq.qpid; init_timer(&(qhp->timer)); PDBG("%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", __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries, qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr, 1 << qhp->wq.size_log2, qhp->wq.rq_addr); return &qhp->ibqp; } static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata) { struct iwch_dev *rhp; struct iwch_qp *qhp; enum iwch_qp_attr_mask mask = 0; struct iwch_qp_attributes attrs; PDBG("%s ib_qp %p\n", __func__, ibqp); /* iwarp does not support the RTR state */ if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR)) attr_mask &= ~IB_QP_STATE; /* Make sure we still have something left to do */ if (!attr_mask) return 0; memset(&attrs, 0, sizeof attrs); qhp = to_iwch_qp(ibqp); rhp = qhp->rhp; attrs.next_state = iwch_convert_state(attr->qp_state); attrs.enable_rdma_read = (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) ? 1 : 0; attrs.enable_rdma_write = (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0; mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0; mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ? (IWCH_QP_ATTR_ENABLE_RDMA_READ | IWCH_QP_ATTR_ENABLE_RDMA_WRITE | IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0; return iwch_modify_qp(rhp, qhp, mask, &attrs, 0); } void iwch_qp_add_ref(struct ib_qp *qp) { PDBG("%s ib_qp %p\n", __func__, qp); atomic_inc(&(to_iwch_qp(qp)->refcnt)); } void iwch_qp_rem_ref(struct ib_qp *qp) { PDBG("%s ib_qp %p\n", __func__, qp); if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt))) wake_up(&(to_iwch_qp(qp)->wait)); } static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn) { PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn); return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn); } static int iwch_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 * pkey) { PDBG("%s ibdev %p\n", __func__, ibdev); *pkey = 0; return 0; } static int iwch_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct iwch_dev *dev; PDBG("%s ibdev %p, port %d, index %d, gid %p\n", __func__, ibdev, port, index, gid); dev = to_iwch_dev(ibdev); BUG_ON(port == 0 || port > 2); memset(&(gid->raw[0]), 0, sizeof(gid->raw)); memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6); return 0; } static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev) { struct ethtool_drvinfo info; struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; char *cp, *next; unsigned fw_maj, fw_min, fw_mic; lldev->ethtool_ops->get_drvinfo(lldev, &info); next = info.fw_version + 1; cp = strsep(&next, "."); sscanf(cp, "%i", &fw_maj); cp = strsep(&next, "."); sscanf(cp, "%i", &fw_min); cp = strsep(&next, "."); sscanf(cp, "%i", &fw_mic); return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) | (fw_mic & 0xffff); } static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props) { struct iwch_dev *dev; PDBG("%s ibdev %p\n", __func__, ibdev); dev = to_iwch_dev(ibdev); memset(props, 0, sizeof *props); memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6); props->hw_ver = dev->rdev.t3cdev_p->type; props->fw_ver = fw_vers_string_to_u64(dev); props->device_cap_flags = dev->device_cap_flags; props->page_size_cap = dev->attr.mem_pgsizes_bitmask; props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor; props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device; props->max_mr_size = dev->attr.max_mr_size; props->max_qp = dev->attr.max_qps; props->max_qp_wr = dev->attr.max_wrs; props->max_sge = dev->attr.max_sge_per_wr; props->max_sge_rd = 1; props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp; props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp; props->max_cq = dev->attr.max_cqs; props->max_cqe = dev->attr.max_cqes_per_cq; props->max_mr = dev->attr.max_mem_regs; props->max_pd = dev->attr.max_pds; props->local_ca_ack_delay = 0; props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH; return 0; } static int iwch_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { struct iwch_dev *dev; struct net_device *netdev; struct in_device *inetdev; PDBG("%s ibdev %p\n", __func__, ibdev); dev = to_iwch_dev(ibdev); netdev = dev->rdev.port_info.lldevs[port-1]; memset(props, 0, sizeof(struct ib_port_attr)); props->max_mtu = IB_MTU_4096; if (netdev->mtu >= 4096) props->active_mtu = IB_MTU_4096; else if (netdev->mtu >= 2048) props->active_mtu = IB_MTU_2048; else if (netdev->mtu >= 1024) props->active_mtu = IB_MTU_1024; else if (netdev->mtu >= 512) props->active_mtu = IB_MTU_512; else props->active_mtu = IB_MTU_256; if (!netif_carrier_ok(netdev)) props->state = IB_PORT_DOWN; else { inetdev = in_dev_get(netdev); if (inetdev) { if (inetdev->ifa_list) props->state = IB_PORT_ACTIVE; else props->state = IB_PORT_INIT; in_dev_put(inetdev); } else props->state = IB_PORT_INIT; } props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_REINIT_SUP | IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; props->gid_tbl_len = 1; props->pkey_tbl_len = 1; props->active_width = 2; props->active_speed = IB_SPEED_DDR; props->max_msg_sz = -1; return 0; } static ssize_t show_rev(struct device *dev, struct device_attribute *attr, char *buf) { struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev, ibdev.dev); PDBG("%s dev 0x%p\n", __func__, dev); return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type); } static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf) { struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev, ibdev.dev); struct ethtool_drvinfo info; struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; PDBG("%s dev 0x%p\n", __func__, dev); lldev->ethtool_ops->get_drvinfo(lldev, &info); return sprintf(buf, "%s\n", info.fw_version); } static ssize_t show_hca(struct device *dev, struct device_attribute *attr, char *buf) { struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev, ibdev.dev); struct ethtool_drvinfo info; struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; PDBG("%s dev 0x%p\n", __func__, dev); lldev->ethtool_ops->get_drvinfo(lldev, &info); return sprintf(buf, "%s\n", info.driver); } static ssize_t show_board(struct device *dev, struct device_attribute *attr, char *buf) { struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev, ibdev.dev); PDBG("%s dev 0x%p\n", __func__, dev); return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor, iwch_dev->rdev.rnic_info.pdev->device); } static int iwch_get_mib(struct ib_device *ibdev, union rdma_protocol_stats *stats) { struct iwch_dev *dev; struct tp_mib_stats m; int ret; PDBG("%s ibdev %p\n", __func__, ibdev); dev = to_iwch_dev(ibdev); ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m); if (ret) return -ENOSYS; memset(stats, 0, sizeof *stats); stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) + m.ipInReceive_lo; stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) + m.ipInHdrErrors_lo; stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) + m.ipInAddrErrors_lo; stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) + m.ipInUnknownProtos_lo; stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) + m.ipInDiscards_lo; stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) + m.ipInDelivers_lo; stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) + m.ipOutRequests_lo; stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) + m.ipOutDiscards_lo; stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) + m.ipOutNoRoutes_lo; stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout; stats->iw.ipReasmReqds = (u64) m.ipReasmReqds; stats->iw.ipReasmOKs = (u64) m.ipReasmOKs; stats->iw.ipReasmFails = (u64) m.ipReasmFails; stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens; stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens; stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails; stats->iw.tcpEstabResets = (u64) m.tcpEstabResets; stats->iw.tcpOutRsts = (u64) m.tcpOutRsts; stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab; stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) + m.tcpInSegs_lo; stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) + m.tcpOutSegs_lo; stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) + m.tcpRetransSeg_lo; stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) + m.tcpInErrs_lo; stats->iw.tcpRtoMin = (u64) m.tcpRtoMin; stats->iw.tcpRtoMax = (u64) m.tcpRtoMax; return 0; } static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); static struct device_attribute *iwch_class_attributes[] = { &dev_attr_hw_rev, &dev_attr_fw_ver, &dev_attr_hca_type, &dev_attr_board_id, }; int iwch_register_device(struct iwch_dev *dev) { int ret; int i; PDBG("%s iwch_dev %p\n", __func__, dev); strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX); memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6); dev->ibdev.owner = THIS_MODULE; dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW | IB_DEVICE_MEM_MGT_EXTENSIONS; /* cxgb3 supports STag 0. */ dev->ibdev.local_dma_lkey = 0; dev->ibdev.uverbs_cmd_mask = (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | (1ull << IB_USER_VERBS_CMD_REG_MR) | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_POST_SEND) | (1ull << IB_USER_VERBS_CMD_POST_RECV); dev->ibdev.node_type = RDMA_NODE_RNIC; memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC)); dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports; dev->ibdev.num_comp_vectors = 1; dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev); dev->ibdev.query_device = iwch_query_device; dev->ibdev.query_port = iwch_query_port; dev->ibdev.query_pkey = iwch_query_pkey; dev->ibdev.query_gid = iwch_query_gid; dev->ibdev.alloc_ucontext = iwch_alloc_ucontext; dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext; dev->ibdev.mmap = iwch_mmap; dev->ibdev.alloc_pd = iwch_allocate_pd; dev->ibdev.dealloc_pd = iwch_deallocate_pd; dev->ibdev.create_ah = iwch_ah_create; dev->ibdev.destroy_ah = iwch_ah_destroy; dev->ibdev.create_qp = iwch_create_qp; dev->ibdev.modify_qp = iwch_ib_modify_qp; dev->ibdev.destroy_qp = iwch_destroy_qp; dev->ibdev.create_cq = iwch_create_cq; dev->ibdev.destroy_cq = iwch_destroy_cq; dev->ibdev.resize_cq = iwch_resize_cq; dev->ibdev.poll_cq = iwch_poll_cq; dev->ibdev.get_dma_mr = iwch_get_dma_mr; dev->ibdev.reg_phys_mr = iwch_register_phys_mem; dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem; dev->ibdev.reg_user_mr = iwch_reg_user_mr; dev->ibdev.dereg_mr = iwch_dereg_mr; dev->ibdev.alloc_mw = iwch_alloc_mw; dev->ibdev.bind_mw = iwch_bind_mw; dev->ibdev.dealloc_mw = iwch_dealloc_mw; dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr; dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl; dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl; dev->ibdev.attach_mcast = iwch_multicast_attach; dev->ibdev.detach_mcast = iwch_multicast_detach; dev->ibdev.process_mad = iwch_process_mad; dev->ibdev.req_notify_cq = iwch_arm_cq; dev->ibdev.post_send = iwch_post_send; dev->ibdev.post_recv = iwch_post_receive; dev->ibdev.get_protocol_stats = iwch_get_mib; dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION; dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL); if (!dev->ibdev.iwcm) return -ENOMEM; dev->ibdev.iwcm->connect = iwch_connect; dev->ibdev.iwcm->accept = iwch_accept_cr; dev->ibdev.iwcm->reject = iwch_reject_cr; dev->ibdev.iwcm->create_listen = iwch_create_listen; dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen; dev->ibdev.iwcm->add_ref = iwch_qp_add_ref; dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref; dev->ibdev.iwcm->get_qp = iwch_get_qp; ret = ib_register_device(&dev->ibdev, NULL); if (ret) goto bail1; for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) { ret = device_create_file(&dev->ibdev.dev, iwch_class_attributes[i]); if (ret) { goto bail2; } } return 0; bail2: ib_unregister_device(&dev->ibdev); bail1: kfree(dev->ibdev.iwcm); return ret; } void iwch_unregister_device(struct iwch_dev *dev) { int i; PDBG("%s iwch_dev %p\n", __func__, dev); for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) device_remove_file(&dev->ibdev.dev, iwch_class_attributes[i]); ib_unregister_device(&dev->ibdev); kfree(dev->ibdev.iwcm); return; }