/******************************************************************************* * * Copyright (c) 2015-2016 Intel Corporation. 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 * OpenFabrics.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 "i40iw.h" /** * i40iw_query_device - get device attributes * @ibdev: device pointer from stack * @props: returning device attributes * @udata: user data */ static int i40iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *udata) { struct i40iw_device *iwdev = to_iwdev(ibdev); if (udata->inlen || udata->outlen) return -EINVAL; memset(props, 0, sizeof(*props)); ether_addr_copy((u8 *)&props->sys_image_guid, iwdev->netdev->dev_addr); props->fw_ver = i40iw_fw_major_ver(&iwdev->sc_dev) << 32 | i40iw_fw_minor_ver(&iwdev->sc_dev); props->device_cap_flags = iwdev->device_cap_flags; props->vendor_id = iwdev->ldev->pcidev->vendor; props->vendor_part_id = iwdev->ldev->pcidev->device; props->hw_ver = (u32)iwdev->sc_dev.hw_rev; props->max_mr_size = I40IW_MAX_OUTBOUND_MESSAGE_SIZE; props->max_qp = iwdev->max_qp - iwdev->used_qps; props->max_qp_wr = I40IW_MAX_QP_WRS; props->max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT; props->max_recv_sge = I40IW_MAX_WQ_FRAGMENT_COUNT; props->max_cq = iwdev->max_cq - iwdev->used_cqs; props->max_cqe = iwdev->max_cqe; props->max_mr = iwdev->max_mr - iwdev->used_mrs; props->max_pd = iwdev->max_pd - iwdev->used_pds; props->max_sge_rd = I40IW_MAX_SGE_RD; props->max_qp_rd_atom = I40IW_MAX_IRD_SIZE; props->max_qp_init_rd_atom = props->max_qp_rd_atom; props->atomic_cap = IB_ATOMIC_NONE; props->max_fast_reg_page_list_len = I40IW_MAX_PAGES_PER_FMR; return 0; } /** * i40iw_query_port - get port attrubutes * @ibdev: device pointer from stack * @port: port number for query * @props: returning device attributes */ static int i40iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { props->lid = 1; props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; props->gid_tbl_len = 1; props->active_width = IB_WIDTH_4X; props->active_speed = 1; props->max_msg_sz = I40IW_MAX_OUTBOUND_MESSAGE_SIZE; return 0; } /** * i40iw_alloc_ucontext - Allocate the user context data structure * @uctx: Uverbs context pointer from stack * @udata: user data * * This keeps track of all objects associated with a particular * user-mode client. */ static int i40iw_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) { struct ib_device *ibdev = uctx->device; struct i40iw_device *iwdev = to_iwdev(ibdev); struct i40iw_alloc_ucontext_req req; struct i40iw_alloc_ucontext_resp uresp = {}; struct i40iw_ucontext *ucontext = to_ucontext(uctx); if (ib_copy_from_udata(&req, udata, sizeof(req))) return -EINVAL; if (req.userspace_ver < 4 || req.userspace_ver > I40IW_ABI_VER) { i40iw_pr_err("Unsupported provider library version %u.\n", req.userspace_ver); return -EINVAL; } uresp.max_qps = iwdev->max_qp; uresp.max_pds = iwdev->max_pd; uresp.wq_size = iwdev->max_qp_wr * 2; uresp.kernel_ver = req.userspace_ver; ucontext->iwdev = iwdev; ucontext->abi_ver = req.userspace_ver; if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) return -EFAULT; INIT_LIST_HEAD(&ucontext->cq_reg_mem_list); spin_lock_init(&ucontext->cq_reg_mem_list_lock); INIT_LIST_HEAD(&ucontext->qp_reg_mem_list); spin_lock_init(&ucontext->qp_reg_mem_list_lock); return 0; } /** * i40iw_dealloc_ucontext - deallocate the user context data structure * @context: user context created during alloc */ static void i40iw_dealloc_ucontext(struct ib_ucontext *context) { return; } /** * i40iw_mmap - user memory map * @context: context created during alloc * @vma: kernel info for user memory map */ static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) { struct i40iw_ucontext *ucontext = to_ucontext(context); u64 dbaddr; if (vma->vm_pgoff || vma->vm_end - vma->vm_start != PAGE_SIZE) return -EINVAL; dbaddr = I40IW_DB_ADDR_OFFSET + pci_resource_start(ucontext->iwdev->ldev->pcidev, 0); return rdma_user_mmap_io(context, vma, dbaddr >> PAGE_SHIFT, PAGE_SIZE, pgprot_noncached(vma->vm_page_prot), NULL); } /** * i40iw_alloc_push_page - allocate a push page for qp * @iwdev: iwarp device * @qp: hardware control qp */ static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp) { struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; enum i40iw_status_code status; if (qp->push_idx != I40IW_INVALID_PUSH_PAGE_INDEX) return; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return; atomic_inc(&cqp_request->refcount); cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE; cqp_info->post_sq = 1; cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle; cqp_info->in.u.manage_push_page.info.free_page = 0; cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp; cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (!status) qp->push_idx = cqp_request->compl_info.op_ret_val; else i40iw_pr_err("CQP-OP Push page fail"); i40iw_put_cqp_request(&iwdev->cqp, cqp_request); } /** * i40iw_dealloc_push_page - free a push page for qp * @iwdev: iwarp device * @qp: hardware control qp */ static void i40iw_dealloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp) { struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; enum i40iw_status_code status; if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) return; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false); if (!cqp_request) return; cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE; cqp_info->post_sq = 1; cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx; cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle; cqp_info->in.u.manage_push_page.info.free_page = 1; cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp; cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (!status) qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX; else i40iw_pr_err("CQP-OP Push page fail"); } /** * i40iw_alloc_pd - allocate protection domain * @pd: PD pointer * @udata: user data */ static int i40iw_alloc_pd(struct ib_pd *pd, struct ib_udata *udata) { struct i40iw_pd *iwpd = to_iwpd(pd); struct i40iw_device *iwdev = to_iwdev(pd->device); struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_alloc_pd_resp uresp; struct i40iw_sc_pd *sc_pd; u32 pd_id = 0; int err; if (iwdev->closing) return -ENODEV; err = i40iw_alloc_resource(iwdev, iwdev->allocated_pds, iwdev->max_pd, &pd_id, &iwdev->next_pd); if (err) { i40iw_pr_err("alloc resource failed\n"); return err; } sc_pd = &iwpd->sc_pd; if (udata) { struct i40iw_ucontext *ucontext = rdma_udata_to_drv_context( udata, struct i40iw_ucontext, ibucontext); dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id, ucontext->abi_ver); memset(&uresp, 0, sizeof(uresp)); uresp.pd_id = pd_id; if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) { err = -EFAULT; goto error; } } else { dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id, -1); } i40iw_add_pdusecount(iwpd); return 0; error: i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id); return err; } /** * i40iw_dealloc_pd - deallocate pd * @ibpd: ptr of pd to be deallocated * @udata: user data or null for kernel object */ static int i40iw_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct i40iw_pd *iwpd = to_iwpd(ibpd); struct i40iw_device *iwdev = to_iwdev(ibpd->device); i40iw_rem_pdusecount(iwpd, iwdev); return 0; } /** * i40iw_get_pbl - Retrieve pbl from a list given a virtual * address * @va: user virtual address * @pbl_list: pbl list to search in (QP's or CQ's) */ static struct i40iw_pbl *i40iw_get_pbl(unsigned long va, struct list_head *pbl_list) { struct i40iw_pbl *iwpbl; list_for_each_entry(iwpbl, pbl_list, list) { if (iwpbl->user_base == va) { iwpbl->on_list = false; list_del(&iwpbl->list); return iwpbl; } } return NULL; } /** * i40iw_free_qp_resources - free up memory resources for qp * @iwdev: iwarp device * @iwqp: qp ptr (user or kernel) * @qp_num: qp number assigned */ void i40iw_free_qp_resources(struct i40iw_qp *iwqp) { struct i40iw_pbl *iwpbl = &iwqp->iwpbl; struct i40iw_device *iwdev = iwqp->iwdev; u32 qp_num = iwqp->ibqp.qp_num; i40iw_ieq_cleanup_qp(iwdev->vsi.ieq, &iwqp->sc_qp); i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp); if (qp_num) i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num); if (iwpbl->pbl_allocated) i40iw_free_pble(iwdev->pble_rsrc, &iwpbl->pble_alloc); i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->q2_ctx_mem); i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->kqp.dma_mem); kfree(iwqp->kqp.wrid_mem); iwqp->kqp.wrid_mem = NULL; kfree(iwqp); } /** * i40iw_clean_cqes - clean cq entries for qp * @iwqp: qp ptr (user or kernel) * @iwcq: cq ptr */ static void i40iw_clean_cqes(struct i40iw_qp *iwqp, struct i40iw_cq *iwcq) { struct i40iw_cq_uk *ukcq = &iwcq->sc_cq.cq_uk; ukcq->ops.iw_cq_clean(&iwqp->sc_qp.qp_uk, ukcq); } /** * i40iw_destroy_qp - destroy qp * @ibqp: qp's ib pointer also to get to device's qp address */ static int i40iw_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) { struct i40iw_qp *iwqp = to_iwqp(ibqp); struct ib_qp_attr attr; struct i40iw_device *iwdev = iwqp->iwdev; memset(&attr, 0, sizeof(attr)); iwqp->destroyed = 1; if (iwqp->ibqp_state >= IB_QPS_INIT && iwqp->ibqp_state < IB_QPS_RTS) i40iw_next_iw_state(iwqp, I40IW_QP_STATE_ERROR, 0, 0, 0); if (!iwqp->user_mode) { if (iwqp->iwscq) { i40iw_clean_cqes(iwqp, iwqp->iwscq); if (iwqp->iwrcq != iwqp->iwscq) i40iw_clean_cqes(iwqp, iwqp->iwrcq); } } attr.qp_state = IB_QPS_ERR; i40iw_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL); i40iw_qp_rem_ref(&iwqp->ibqp); wait_for_completion(&iwqp->free_qp); i40iw_cqp_qp_destroy_cmd(&iwdev->sc_dev, &iwqp->sc_qp); i40iw_rem_pdusecount(iwqp->iwpd, iwdev); i40iw_free_qp_resources(iwqp); i40iw_rem_devusecount(iwdev); return 0; } /** * i40iw_setup_virt_qp - setup for allocation of virtual qp * @dev: iwarp device * @qp: qp ptr * @init_info: initialize info to return */ static int i40iw_setup_virt_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp, struct i40iw_qp_init_info *init_info) { struct i40iw_pbl *iwpbl = &iwqp->iwpbl; struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr; iwqp->page = qpmr->sq_page; init_info->shadow_area_pa = cpu_to_le64(qpmr->shadow); if (iwpbl->pbl_allocated) { init_info->virtual_map = true; init_info->sq_pa = qpmr->sq_pbl.idx; init_info->rq_pa = qpmr->rq_pbl.idx; } else { init_info->sq_pa = qpmr->sq_pbl.addr; init_info->rq_pa = qpmr->rq_pbl.addr; } return 0; } /** * i40iw_setup_kmode_qp - setup initialization for kernel mode qp * @iwdev: iwarp device * @iwqp: qp ptr (user or kernel) * @info: initialize info to return */ static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp, struct i40iw_qp_init_info *info) { struct i40iw_dma_mem *mem = &iwqp->kqp.dma_mem; u32 sqdepth, rqdepth; u8 sqshift; u32 size; enum i40iw_status_code status; struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info; i40iw_get_wqe_shift(ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift); status = i40iw_get_sqdepth(ukinfo->sq_size, sqshift, &sqdepth); if (status) return -ENOMEM; status = i40iw_get_rqdepth(ukinfo->rq_size, I40IW_MAX_RQ_WQE_SHIFT, &rqdepth); if (status) return -ENOMEM; size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3); iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL); ukinfo->sq_wrtrk_array = (struct i40iw_sq_uk_wr_trk_info *)iwqp->kqp.wrid_mem; if (!ukinfo->sq_wrtrk_array) return -ENOMEM; ukinfo->rq_wrid_array = (u64 *)&ukinfo->sq_wrtrk_array[sqdepth]; size = (sqdepth + rqdepth) * I40IW_QP_WQE_MIN_SIZE; size += (I40IW_SHADOW_AREA_SIZE << 3); status = i40iw_allocate_dma_mem(iwdev->sc_dev.hw, mem, size, 256); if (status) { kfree(ukinfo->sq_wrtrk_array); ukinfo->sq_wrtrk_array = NULL; return -ENOMEM; } ukinfo->sq = mem->va; info->sq_pa = mem->pa; ukinfo->rq = &ukinfo->sq[sqdepth]; info->rq_pa = info->sq_pa + (sqdepth * I40IW_QP_WQE_MIN_SIZE); ukinfo->shadow_area = ukinfo->rq[rqdepth].elem; info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE); ukinfo->sq_size = sqdepth >> sqshift; ukinfo->rq_size = rqdepth >> I40IW_MAX_RQ_WQE_SHIFT; ukinfo->qp_id = iwqp->ibqp.qp_num; return 0; } /** * i40iw_create_qp - create qp * @ibpd: ptr of pd * @init_attr: attributes for qp * @udata: user data for create qp */ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd, struct ib_qp_init_attr *init_attr, struct ib_udata *udata) { struct i40iw_pd *iwpd = to_iwpd(ibpd); struct i40iw_device *iwdev = to_iwdev(ibpd->device); struct i40iw_cqp *iwcqp = &iwdev->cqp; struct i40iw_qp *iwqp; struct i40iw_ucontext *ucontext = rdma_udata_to_drv_context( udata, struct i40iw_ucontext, ibucontext); struct i40iw_create_qp_req req; struct i40iw_create_qp_resp uresp; u32 qp_num = 0; enum i40iw_status_code ret; int err_code; int sq_size; int rq_size; struct i40iw_sc_qp *qp; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_qp_init_info init_info; struct i40iw_create_qp_info *qp_info; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_qp_host_ctx_info *ctx_info; struct i40iwarp_offload_info *iwarp_info; unsigned long flags; if (iwdev->closing) return ERR_PTR(-ENODEV); if (init_attr->create_flags) return ERR_PTR(-EINVAL); if (init_attr->cap.max_inline_data > I40IW_MAX_INLINE_DATA_SIZE) init_attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE; if (init_attr->cap.max_send_sge > I40IW_MAX_WQ_FRAGMENT_COUNT) init_attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT; if (init_attr->cap.max_recv_sge > I40IW_MAX_WQ_FRAGMENT_COUNT) init_attr->cap.max_recv_sge = I40IW_MAX_WQ_FRAGMENT_COUNT; memset(&init_info, 0, sizeof(init_info)); sq_size = init_attr->cap.max_send_wr; rq_size = init_attr->cap.max_recv_wr; init_info.vsi = &iwdev->vsi; init_info.qp_uk_init_info.sq_size = sq_size; init_info.qp_uk_init_info.rq_size = rq_size; init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge; init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge; init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data; iwqp = kzalloc(sizeof(*iwqp), GFP_KERNEL); if (!iwqp) return ERR_PTR(-ENOMEM); qp = &iwqp->sc_qp; qp->back_qp = (void *)iwqp; qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX; iwqp->iwdev = iwdev; iwqp->ctx_info.iwarp_info = &iwqp->iwarp_info; if (i40iw_allocate_dma_mem(dev->hw, &iwqp->q2_ctx_mem, I40IW_Q2_BUFFER_SIZE + I40IW_QP_CTX_SIZE, 256)) { i40iw_pr_err("dma_mem failed\n"); err_code = -ENOMEM; goto error; } init_info.q2 = iwqp->q2_ctx_mem.va; init_info.q2_pa = iwqp->q2_ctx_mem.pa; init_info.host_ctx = (void *)init_info.q2 + I40IW_Q2_BUFFER_SIZE; init_info.host_ctx_pa = init_info.q2_pa + I40IW_Q2_BUFFER_SIZE; err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_qps, iwdev->max_qp, &qp_num, &iwdev->next_qp); if (err_code) { i40iw_pr_err("qp resource\n"); goto error; } iwqp->iwpd = iwpd; iwqp->ibqp.qp_num = qp_num; qp = &iwqp->sc_qp; iwqp->iwscq = to_iwcq(init_attr->send_cq); iwqp->iwrcq = to_iwcq(init_attr->recv_cq); iwqp->host_ctx.va = init_info.host_ctx; iwqp->host_ctx.pa = init_info.host_ctx_pa; iwqp->host_ctx.size = I40IW_QP_CTX_SIZE; init_info.pd = &iwpd->sc_pd; init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num; iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp; if (init_attr->qp_type != IB_QPT_RC) { err_code = -EOPNOTSUPP; goto error; } if (iwdev->push_mode) i40iw_alloc_push_page(iwdev, qp); if (udata) { err_code = ib_copy_from_udata(&req, udata, sizeof(req)); if (err_code) { i40iw_pr_err("ib_copy_from_data\n"); goto error; } iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx; iwqp->user_mode = 1; if (req.user_wqe_buffers) { struct i40iw_pbl *iwpbl; spin_lock_irqsave( &ucontext->qp_reg_mem_list_lock, flags); iwpbl = i40iw_get_pbl( (unsigned long)req.user_wqe_buffers, &ucontext->qp_reg_mem_list); spin_unlock_irqrestore( &ucontext->qp_reg_mem_list_lock, flags); if (!iwpbl) { err_code = -ENODATA; i40iw_pr_err("no pbl info\n"); goto error; } memcpy(&iwqp->iwpbl, iwpbl, sizeof(iwqp->iwpbl)); } err_code = i40iw_setup_virt_qp(iwdev, iwqp, &init_info); } else { err_code = i40iw_setup_kmode_qp(iwdev, iwqp, &init_info); } if (err_code) { i40iw_pr_err("setup qp failed\n"); goto error; } init_info.type = I40IW_QP_TYPE_IWARP; ret = dev->iw_priv_qp_ops->qp_init(qp, &init_info); if (ret) { err_code = -EPROTO; i40iw_pr_err("qp_init fail\n"); goto error; } ctx_info = &iwqp->ctx_info; iwarp_info = &iwqp->iwarp_info; iwarp_info->rd_enable = true; iwarp_info->wr_rdresp_en = true; if (!iwqp->user_mode) { iwarp_info->fast_reg_en = true; iwarp_info->priv_mode_en = true; } iwarp_info->ddp_ver = 1; iwarp_info->rdmap_ver = 1; ctx_info->iwarp_info_valid = true; ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id; ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id; if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) { ctx_info->push_mode_en = false; } else { ctx_info->push_mode_en = true; ctx_info->push_idx = qp->push_idx; } ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp, (u64 *)iwqp->host_ctx.va, ctx_info); ctx_info->iwarp_info_valid = false; cqp_request = i40iw_get_cqp_request(iwcqp, true); if (!cqp_request) { err_code = -ENOMEM; goto error; } cqp_info = &cqp_request->info; qp_info = &cqp_request->info.in.u.qp_create.info; memset(qp_info, 0, sizeof(*qp_info)); qp_info->cq_num_valid = true; qp_info->next_iwarp_state = I40IW_QP_STATE_IDLE; cqp_info->cqp_cmd = OP_QP_CREATE; cqp_info->post_sq = 1; cqp_info->in.u.qp_create.qp = qp; cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request; ret = i40iw_handle_cqp_op(iwdev, cqp_request); if (ret) { i40iw_pr_err("CQP-OP QP create fail"); err_code = -EACCES; goto error; } refcount_set(&iwqp->refcount, 1); spin_lock_init(&iwqp->lock); iwqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0; iwdev->qp_table[qp_num] = iwqp; i40iw_add_pdusecount(iwqp->iwpd); i40iw_add_devusecount(iwdev); if (udata) { memset(&uresp, 0, sizeof(uresp)); uresp.actual_sq_size = sq_size; uresp.actual_rq_size = rq_size; uresp.qp_id = qp_num; uresp.push_idx = qp->push_idx; err_code = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); if (err_code) { i40iw_pr_err("copy_to_udata failed\n"); i40iw_destroy_qp(&iwqp->ibqp, udata); /* let the completion of the qp destroy free the qp */ return ERR_PTR(err_code); } } init_completion(&iwqp->sq_drained); init_completion(&iwqp->rq_drained); init_completion(&iwqp->free_qp); return &iwqp->ibqp; error: i40iw_free_qp_resources(iwqp); return ERR_PTR(err_code); } /** * i40iw_query - query qp attributes * @ibqp: qp pointer * @attr: attributes pointer * @attr_mask: Not used * @init_attr: qp attributes to return */ static int i40iw_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_qp_init_attr *init_attr) { struct i40iw_qp *iwqp = to_iwqp(ibqp); struct i40iw_sc_qp *qp = &iwqp->sc_qp; attr->qp_state = iwqp->ibqp_state; attr->cur_qp_state = attr->qp_state; attr->qp_access_flags = 0; attr->cap.max_send_wr = qp->qp_uk.sq_size; attr->cap.max_recv_wr = qp->qp_uk.rq_size; attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE; attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT; attr->cap.max_recv_sge = I40IW_MAX_WQ_FRAGMENT_COUNT; attr->port_num = 1; init_attr->event_handler = iwqp->ibqp.event_handler; init_attr->qp_context = iwqp->ibqp.qp_context; init_attr->send_cq = iwqp->ibqp.send_cq; init_attr->recv_cq = iwqp->ibqp.recv_cq; init_attr->srq = iwqp->ibqp.srq; init_attr->cap = attr->cap; init_attr->port_num = 1; return 0; } /** * i40iw_hw_modify_qp - setup cqp for modify qp * @iwdev: iwarp device * @iwqp: qp ptr (user or kernel) * @info: info for modify qp * @wait: flag to wait or not for modify qp completion */ void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp, struct i40iw_modify_qp_info *info, bool wait) { struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_modify_qp_info *m_info; struct i40iw_gen_ae_info ae_info; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait); if (!cqp_request) return; cqp_info = &cqp_request->info; m_info = &cqp_info->in.u.qp_modify.info; memcpy(m_info, info, sizeof(*m_info)); cqp_info->cqp_cmd = OP_QP_MODIFY; cqp_info->post_sq = 1; cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp; cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request; if (!i40iw_handle_cqp_op(iwdev, cqp_request)) return; switch (m_info->next_iwarp_state) { case I40IW_QP_STATE_RTS: if (iwqp->iwarp_state == I40IW_QP_STATE_IDLE) i40iw_send_reset(iwqp->cm_node); fallthrough; case I40IW_QP_STATE_IDLE: case I40IW_QP_STATE_TERMINATE: case I40IW_QP_STATE_CLOSING: ae_info.ae_code = I40IW_AE_BAD_CLOSE; ae_info.ae_source = 0; i40iw_gen_ae(iwdev, &iwqp->sc_qp, &ae_info, false); break; case I40IW_QP_STATE_ERROR: default: break; } } /** * i40iw_modify_qp - modify qp request * @ibqp: qp's pointer for modify * @attr: access attributes * @attr_mask: state mask * @udata: user data */ int i40iw_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata) { struct i40iw_qp *iwqp = to_iwqp(ibqp); struct i40iw_device *iwdev = iwqp->iwdev; struct i40iw_qp_host_ctx_info *ctx_info; struct i40iwarp_offload_info *iwarp_info; struct i40iw_modify_qp_info info; u8 issue_modify_qp = 0; u8 dont_wait = 0; u32 err; unsigned long flags; memset(&info, 0, sizeof(info)); ctx_info = &iwqp->ctx_info; iwarp_info = &iwqp->iwarp_info; spin_lock_irqsave(&iwqp->lock, flags); if (attr_mask & IB_QP_STATE) { if (iwdev->closing && attr->qp_state != IB_QPS_ERR) { err = -EINVAL; goto exit; } switch (attr->qp_state) { case IB_QPS_INIT: case IB_QPS_RTR: if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_IDLE) { err = -EINVAL; goto exit; } if (iwqp->iwarp_state == I40IW_QP_STATE_INVALID) { info.next_iwarp_state = I40IW_QP_STATE_IDLE; issue_modify_qp = 1; } break; case IB_QPS_RTS: if ((iwqp->iwarp_state > (u32)I40IW_QP_STATE_RTS) || (!iwqp->cm_id)) { err = -EINVAL; goto exit; } issue_modify_qp = 1; iwqp->hw_tcp_state = I40IW_TCP_STATE_ESTABLISHED; iwqp->hte_added = 1; info.next_iwarp_state = I40IW_QP_STATE_RTS; info.tcp_ctx_valid = true; info.ord_valid = true; info.arp_cache_idx_valid = true; info.cq_num_valid = true; break; case IB_QPS_SQD: if (iwqp->hw_iwarp_state > (u32)I40IW_QP_STATE_RTS) { err = 0; goto exit; } if ((iwqp->iwarp_state == (u32)I40IW_QP_STATE_CLOSING) || (iwqp->iwarp_state < (u32)I40IW_QP_STATE_RTS)) { err = 0; goto exit; } if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_CLOSING) { err = -EINVAL; goto exit; } info.next_iwarp_state = I40IW_QP_STATE_CLOSING; issue_modify_qp = 1; break; case IB_QPS_SQE: if (iwqp->iwarp_state >= (u32)I40IW_QP_STATE_TERMINATE) { err = -EINVAL; goto exit; } info.next_iwarp_state = I40IW_QP_STATE_TERMINATE; issue_modify_qp = 1; break; case IB_QPS_ERR: case IB_QPS_RESET: if (iwqp->iwarp_state == (u32)I40IW_QP_STATE_ERROR) { err = -EINVAL; goto exit; } if (iwqp->sc_qp.term_flags) i40iw_terminate_del_timer(&iwqp->sc_qp); info.next_iwarp_state = I40IW_QP_STATE_ERROR; if ((iwqp->hw_tcp_state > I40IW_TCP_STATE_CLOSED) && iwdev->iw_status && (iwqp->hw_tcp_state != I40IW_TCP_STATE_TIME_WAIT)) info.reset_tcp_conn = true; else dont_wait = 1; issue_modify_qp = 1; info.next_iwarp_state = I40IW_QP_STATE_ERROR; break; default: err = -EINVAL; goto exit; } iwqp->ibqp_state = attr->qp_state; } if (attr_mask & IB_QP_ACCESS_FLAGS) { ctx_info->iwarp_info_valid = true; if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) iwarp_info->wr_rdresp_en = true; if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) iwarp_info->wr_rdresp_en = true; if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) iwarp_info->rd_enable = true; if (attr->qp_access_flags & IB_ACCESS_MW_BIND) iwarp_info->bind_en = true; if (iwqp->user_mode) { iwarp_info->rd_enable = true; iwarp_info->wr_rdresp_en = true; iwarp_info->priv_mode_en = false; } } if (ctx_info->iwarp_info_valid) { struct i40iw_sc_dev *dev = &iwdev->sc_dev; int ret; ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id; ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id; ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp, (u64 *)iwqp->host_ctx.va, ctx_info); if (ret) { i40iw_pr_err("setting QP context\n"); err = -EINVAL; goto exit; } } spin_unlock_irqrestore(&iwqp->lock, flags); if (issue_modify_qp) { i40iw_hw_modify_qp(iwdev, iwqp, &info, true); spin_lock_irqsave(&iwqp->lock, flags); iwqp->iwarp_state = info.next_iwarp_state; spin_unlock_irqrestore(&iwqp->lock, flags); } if (issue_modify_qp && (iwqp->ibqp_state > IB_QPS_RTS)) { if (dont_wait) { if (iwqp->cm_id && iwqp->hw_tcp_state) { spin_lock_irqsave(&iwqp->lock, flags); iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED; iwqp->last_aeq = I40IW_AE_RESET_SENT; spin_unlock_irqrestore(&iwqp->lock, flags); i40iw_cm_disconn(iwqp); } } else { spin_lock_irqsave(&iwqp->lock, flags); if (iwqp->cm_id) { if (atomic_inc_return(&iwqp->close_timer_started) == 1) { iwqp->cm_id->add_ref(iwqp->cm_id); i40iw_schedule_cm_timer(iwqp->cm_node, (struct i40iw_puda_buf *)iwqp, I40IW_TIMER_TYPE_CLOSE, 1, 0); } } spin_unlock_irqrestore(&iwqp->lock, flags); } } return 0; exit: spin_unlock_irqrestore(&iwqp->lock, flags); return err; } /** * cq_free_resources - free up recources for cq * @iwdev: iwarp device * @iwcq: cq ptr */ static void cq_free_resources(struct i40iw_device *iwdev, struct i40iw_cq *iwcq) { struct i40iw_sc_cq *cq = &iwcq->sc_cq; if (!iwcq->user_mode) i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwcq->kmem); i40iw_free_resource(iwdev, iwdev->allocated_cqs, cq->cq_uk.cq_id); } /** * i40iw_cq_wq_destroy - send cq destroy cqp * @iwdev: iwarp device * @cq: hardware control cq */ void i40iw_cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq) { enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return; cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_CQ_DESTROY; cqp_info->post_sq = 1; cqp_info->in.u.cq_destroy.cq = cq; cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP Destroy QP fail"); } /** * i40iw_destroy_cq - destroy cq * @ib_cq: cq pointer * @udata: user data or NULL for kernel object */ static int i40iw_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata) { struct i40iw_cq *iwcq; struct i40iw_device *iwdev; struct i40iw_sc_cq *cq; iwcq = to_iwcq(ib_cq); iwdev = to_iwdev(ib_cq->device); cq = &iwcq->sc_cq; i40iw_cq_wq_destroy(iwdev, cq); cq_free_resources(iwdev, iwcq); i40iw_rem_devusecount(iwdev); return 0; } /** * i40iw_create_cq - create cq * @ibcq: CQ allocated * @attr: attributes for cq * @udata: user data */ static int i40iw_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, struct ib_udata *udata) { struct ib_device *ibdev = ibcq->device; struct i40iw_device *iwdev = to_iwdev(ibdev); struct i40iw_cq *iwcq = to_iwcq(ibcq); struct i40iw_pbl *iwpbl; u32 cq_num = 0; struct i40iw_sc_cq *cq; struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_cq_init_info info = {}; enum i40iw_status_code status; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info; unsigned long flags; int err_code; int entries = attr->cqe; if (iwdev->closing) return -ENODEV; if (entries > iwdev->max_cqe) return -EINVAL; err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs, iwdev->max_cq, &cq_num, &iwdev->next_cq); if (err_code) return err_code; cq = &iwcq->sc_cq; cq->back_cq = (void *)iwcq; spin_lock_init(&iwcq->lock); info.dev = dev; ukinfo->cq_size = max(entries, 4); ukinfo->cq_id = cq_num; iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size; info.ceqe_mask = 0; if (attr->comp_vector < iwdev->ceqs_count) info.ceq_id = attr->comp_vector; info.ceq_id_valid = true; info.ceqe_mask = 1; info.type = I40IW_CQ_TYPE_IWARP; if (udata) { struct i40iw_ucontext *ucontext = rdma_udata_to_drv_context( udata, struct i40iw_ucontext, ibucontext); struct i40iw_create_cq_req req; struct i40iw_cq_mr *cqmr; memset(&req, 0, sizeof(req)); iwcq->user_mode = true; if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req))) { err_code = -EFAULT; goto cq_free_resources; } spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer, &ucontext->cq_reg_mem_list); spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); if (!iwpbl) { err_code = -EPROTO; goto cq_free_resources; } iwcq->iwpbl = iwpbl; iwcq->cq_mem_size = 0; cqmr = &iwpbl->cq_mr; info.shadow_area_pa = cpu_to_le64(cqmr->shadow); if (iwpbl->pbl_allocated) { info.virtual_map = true; info.pbl_chunk_size = 1; info.first_pm_pbl_idx = cqmr->cq_pbl.idx; } else { info.cq_base_pa = cqmr->cq_pbl.addr; } } else { /* Kmode allocations */ int rsize; int shadow; rsize = info.cq_uk_init_info.cq_size * sizeof(struct i40iw_cqe); rsize = round_up(rsize, 256); shadow = I40IW_SHADOW_AREA_SIZE << 3; status = i40iw_allocate_dma_mem(dev->hw, &iwcq->kmem, rsize + shadow, 256); if (status) { err_code = -ENOMEM; goto cq_free_resources; } ukinfo->cq_base = iwcq->kmem.va; info.cq_base_pa = iwcq->kmem.pa; info.shadow_area_pa = info.cq_base_pa + rsize; ukinfo->shadow_area = iwcq->kmem.va + rsize; } if (dev->iw_priv_cq_ops->cq_init(cq, &info)) { i40iw_pr_err("init cq fail\n"); err_code = -EPROTO; goto cq_free_resources; } cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) { err_code = -ENOMEM; goto cq_free_resources; } cqp_info = &cqp_request->info; cqp_info->cqp_cmd = OP_CQ_CREATE; cqp_info->post_sq = 1; cqp_info->in.u.cq_create.cq = cq; cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) { i40iw_pr_err("CQP-OP Create QP fail"); err_code = -EPROTO; goto cq_free_resources; } if (udata) { struct i40iw_create_cq_resp resp; memset(&resp, 0, sizeof(resp)); resp.cq_id = info.cq_uk_init_info.cq_id; resp.cq_size = info.cq_uk_init_info.cq_size; if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { i40iw_pr_err("copy to user data\n"); err_code = -EPROTO; goto cq_destroy; } } i40iw_add_devusecount(iwdev); return 0; cq_destroy: i40iw_cq_wq_destroy(iwdev, cq); cq_free_resources: cq_free_resources(iwdev, iwcq); return err_code; } /** * i40iw_get_user_access - get hw access from IB access * @acc: IB access to return hw access */ static inline u16 i40iw_get_user_access(int acc) { u16 access = 0; access |= (acc & IB_ACCESS_LOCAL_WRITE) ? I40IW_ACCESS_FLAGS_LOCALWRITE : 0; access |= (acc & IB_ACCESS_REMOTE_WRITE) ? I40IW_ACCESS_FLAGS_REMOTEWRITE : 0; access |= (acc & IB_ACCESS_REMOTE_READ) ? I40IW_ACCESS_FLAGS_REMOTEREAD : 0; access |= (acc & IB_ACCESS_MW_BIND) ? I40IW_ACCESS_FLAGS_BIND_WINDOW : 0; return access; } /** * i40iw_free_stag - free stag resource * @iwdev: iwarp device * @stag: stag to free */ static void i40iw_free_stag(struct i40iw_device *iwdev, u32 stag) { u32 stag_idx; stag_idx = (stag & iwdev->mr_stagmask) >> I40IW_CQPSQ_STAG_IDX_SHIFT; i40iw_free_resource(iwdev, iwdev->allocated_mrs, stag_idx); i40iw_rem_devusecount(iwdev); } /** * i40iw_create_stag - create random stag * @iwdev: iwarp device */ static u32 i40iw_create_stag(struct i40iw_device *iwdev) { u32 stag = 0; u32 stag_index = 0; u32 next_stag_index; u32 driver_key; u32 random; u8 consumer_key; int ret; get_random_bytes(&random, sizeof(random)); consumer_key = (u8)random; driver_key = random & ~iwdev->mr_stagmask; next_stag_index = (random & iwdev->mr_stagmask) >> 8; next_stag_index %= iwdev->max_mr; ret = i40iw_alloc_resource(iwdev, iwdev->allocated_mrs, iwdev->max_mr, &stag_index, &next_stag_index); if (!ret) { stag = stag_index << I40IW_CQPSQ_STAG_IDX_SHIFT; stag |= driver_key; stag += (u32)consumer_key; i40iw_add_devusecount(iwdev); } return stag; } /** * i40iw_next_pbl_addr - Get next pbl address * @pbl: pointer to a pble * @pinfo: info pointer * @idx: index */ static inline u64 *i40iw_next_pbl_addr(u64 *pbl, struct i40iw_pble_info **pinfo, u32 *idx) { *idx += 1; if ((!(*pinfo)) || (*idx != (*pinfo)->cnt)) return ++pbl; *idx = 0; (*pinfo)++; return (u64 *)(*pinfo)->addr; } /** * i40iw_copy_user_pgaddrs - copy user page address to pble's os locally * @iwmr: iwmr for IB's user page addresses * @pbl: ple pointer to save 1 level or 0 level pble * @level: indicated level 0, 1 or 2 */ static void i40iw_copy_user_pgaddrs(struct i40iw_mr *iwmr, u64 *pbl, enum i40iw_pble_level level) { struct ib_umem *region = iwmr->region; struct i40iw_pbl *iwpbl = &iwmr->iwpbl; struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; struct i40iw_pble_info *pinfo; struct ib_block_iter biter; u32 idx = 0; pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf; if (iwmr->type == IW_MEMREG_TYPE_QP) iwpbl->qp_mr.sq_page = sg_page(region->sg_head.sgl); rdma_umem_for_each_dma_block(region, &biter, iwmr->page_size) { *pbl = rdma_block_iter_dma_address(&biter); pbl = i40iw_next_pbl_addr(pbl, &pinfo, &idx); } } /** * i40iw_check_mem_contiguous - check if pbls stored in arr are contiguous * @arr: lvl1 pbl array * @npages: page count * pg_size: page size * */ static bool i40iw_check_mem_contiguous(u64 *arr, u32 npages, u32 pg_size) { u32 pg_idx; for (pg_idx = 0; pg_idx < npages; pg_idx++) { if ((*arr + (pg_size * pg_idx)) != arr[pg_idx]) return false; } return true; } /** * i40iw_check_mr_contiguous - check if MR is physically contiguous * @palloc: pbl allocation struct * pg_size: page size */ static bool i40iw_check_mr_contiguous(struct i40iw_pble_alloc *palloc, u32 pg_size) { struct i40iw_pble_level2 *lvl2 = &palloc->level2; struct i40iw_pble_info *leaf = lvl2->leaf; u64 *arr = NULL; u64 *start_addr = NULL; int i; bool ret; if (palloc->level == I40IW_LEVEL_1) { arr = (u64 *)palloc->level1.addr; ret = i40iw_check_mem_contiguous(arr, palloc->total_cnt, pg_size); return ret; } start_addr = (u64 *)leaf->addr; for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) { arr = (u64 *)leaf->addr; if ((*start_addr + (i * pg_size * PBLE_PER_PAGE)) != *arr) return false; ret = i40iw_check_mem_contiguous(arr, leaf->cnt, pg_size); if (!ret) return false; } return true; } /** * i40iw_setup_pbles - copy user pg address to pble's * @iwdev: iwarp device * @iwmr: mr pointer for this memory registration * @use_pbles: flag if to use pble's */ static int i40iw_setup_pbles(struct i40iw_device *iwdev, struct i40iw_mr *iwmr, bool use_pbles) { struct i40iw_pbl *iwpbl = &iwmr->iwpbl; struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; struct i40iw_pble_info *pinfo; u64 *pbl; enum i40iw_status_code status; enum i40iw_pble_level level = I40IW_LEVEL_1; if (use_pbles) { mutex_lock(&iwdev->pbl_mutex); status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt); mutex_unlock(&iwdev->pbl_mutex); if (status) return -ENOMEM; iwpbl->pbl_allocated = true; level = palloc->level; pinfo = (level == I40IW_LEVEL_1) ? &palloc->level1 : palloc->level2.leaf; pbl = (u64 *)pinfo->addr; } else { pbl = iwmr->pgaddrmem; } i40iw_copy_user_pgaddrs(iwmr, pbl, level); if (use_pbles) iwmr->pgaddrmem[0] = *pbl; return 0; } /** * i40iw_handle_q_mem - handle memory for qp and cq * @iwdev: iwarp device * @req: information for q memory management * @iwpbl: pble struct * @use_pbles: flag to use pble */ static int i40iw_handle_q_mem(struct i40iw_device *iwdev, struct i40iw_mem_reg_req *req, struct i40iw_pbl *iwpbl, bool use_pbles) { struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; struct i40iw_mr *iwmr = iwpbl->iwmr; struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr; struct i40iw_cq_mr *cqmr = &iwpbl->cq_mr; struct i40iw_hmc_pble *hmc_p; u64 *arr = iwmr->pgaddrmem; u32 pg_size; int err; int total; bool ret = true; total = req->sq_pages + req->rq_pages + req->cq_pages; pg_size = iwmr->page_size; err = i40iw_setup_pbles(iwdev, iwmr, use_pbles); if (err) return err; if (use_pbles && (palloc->level != I40IW_LEVEL_1)) { i40iw_free_pble(iwdev->pble_rsrc, palloc); iwpbl->pbl_allocated = false; return -ENOMEM; } if (use_pbles) arr = (u64 *)palloc->level1.addr; if (iwmr->type == IW_MEMREG_TYPE_QP) { hmc_p = &qpmr->sq_pbl; qpmr->shadow = (dma_addr_t)arr[total]; if (use_pbles) { ret = i40iw_check_mem_contiguous(arr, req->sq_pages, pg_size); if (ret) ret = i40iw_check_mem_contiguous(&arr[req->sq_pages], req->rq_pages, pg_size); } if (!ret) { hmc_p->idx = palloc->level1.idx; hmc_p = &qpmr->rq_pbl; hmc_p->idx = palloc->level1.idx + req->sq_pages; } else { hmc_p->addr = arr[0]; hmc_p = &qpmr->rq_pbl; hmc_p->addr = arr[req->sq_pages]; } } else { /* CQ */ hmc_p = &cqmr->cq_pbl; cqmr->shadow = (dma_addr_t)arr[total]; if (use_pbles) ret = i40iw_check_mem_contiguous(arr, req->cq_pages, pg_size); if (!ret) hmc_p->idx = palloc->level1.idx; else hmc_p->addr = arr[0]; } if (use_pbles && ret) { i40iw_free_pble(iwdev->pble_rsrc, palloc); iwpbl->pbl_allocated = false; } return err; } /** * i40iw_hw_alloc_stag - cqp command to allocate stag * @iwdev: iwarp device * @iwmr: iwarp mr pointer */ static int i40iw_hw_alloc_stag(struct i40iw_device *iwdev, struct i40iw_mr *iwmr) { struct i40iw_allocate_stag_info *info; struct ib_pd *pd = iwmr->ibmr.pd; struct i40iw_pd *iwpd = to_iwpd(pd); enum i40iw_status_code status; int err = 0; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return -ENOMEM; cqp_info = &cqp_request->info; info = &cqp_info->in.u.alloc_stag.info; memset(info, 0, sizeof(*info)); info->page_size = PAGE_SIZE; info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT; info->pd_id = iwpd->sc_pd.pd_id; info->total_len = iwmr->length; info->all_memory = pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY; info->remote_access = true; cqp_info->cqp_cmd = OP_ALLOC_STAG; cqp_info->post_sq = 1; cqp_info->in.u.alloc_stag.dev = &iwdev->sc_dev; cqp_info->in.u.alloc_stag.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) { err = -ENOMEM; i40iw_pr_err("CQP-OP MR Reg fail"); } return err; } /** * i40iw_alloc_mr - register stag for fast memory registration * @pd: ibpd pointer * @mr_type: memory for stag registrion * @max_num_sg: man number of pages */ static struct ib_mr *i40iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, u32 max_num_sg) { struct i40iw_pd *iwpd = to_iwpd(pd); struct i40iw_device *iwdev = to_iwdev(pd->device); struct i40iw_pble_alloc *palloc; struct i40iw_pbl *iwpbl; struct i40iw_mr *iwmr; enum i40iw_status_code status; u32 stag; int err_code = -ENOMEM; iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL); if (!iwmr) return ERR_PTR(-ENOMEM); stag = i40iw_create_stag(iwdev); if (!stag) { err_code = -EOVERFLOW; goto err; } stag &= ~I40IW_CQPSQ_STAG_KEY_MASK; iwmr->stag = stag; iwmr->ibmr.rkey = stag; iwmr->ibmr.lkey = stag; iwmr->ibmr.pd = pd; iwmr->ibmr.device = pd->device; iwpbl = &iwmr->iwpbl; iwpbl->iwmr = iwmr; iwmr->type = IW_MEMREG_TYPE_MEM; palloc = &iwpbl->pble_alloc; iwmr->page_cnt = max_num_sg; /* Use system PAGE_SIZE as the sg page sizes are unknown at this point */ iwmr->length = max_num_sg * PAGE_SIZE; mutex_lock(&iwdev->pbl_mutex); status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt); mutex_unlock(&iwdev->pbl_mutex); if (status) goto err1; if (palloc->level != I40IW_LEVEL_1) goto err2; err_code = i40iw_hw_alloc_stag(iwdev, iwmr); if (err_code) goto err2; iwpbl->pbl_allocated = true; i40iw_add_pdusecount(iwpd); return &iwmr->ibmr; err2: i40iw_free_pble(iwdev->pble_rsrc, palloc); err1: i40iw_free_stag(iwdev, stag); err: kfree(iwmr); return ERR_PTR(err_code); } /** * i40iw_set_page - populate pbl list for fmr * @ibmr: ib mem to access iwarp mr pointer * @addr: page dma address fro pbl list */ static int i40iw_set_page(struct ib_mr *ibmr, u64 addr) { struct i40iw_mr *iwmr = to_iwmr(ibmr); struct i40iw_pbl *iwpbl = &iwmr->iwpbl; struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; u64 *pbl; if (unlikely(iwmr->npages == iwmr->page_cnt)) return -ENOMEM; pbl = (u64 *)palloc->level1.addr; pbl[iwmr->npages++] = cpu_to_le64(addr); return 0; } /** * i40iw_map_mr_sg - map of sg list for fmr * @ibmr: ib mem to access iwarp mr pointer * @sg: scatter gather list for fmr * @sg_nents: number of sg pages */ static int i40iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, unsigned int *sg_offset) { struct i40iw_mr *iwmr = to_iwmr(ibmr); iwmr->npages = 0; return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, i40iw_set_page); } /** * i40iw_drain_sq - drain the send queue * @ibqp: ib qp pointer */ static void i40iw_drain_sq(struct ib_qp *ibqp) { struct i40iw_qp *iwqp = to_iwqp(ibqp); struct i40iw_sc_qp *qp = &iwqp->sc_qp; if (I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring)) wait_for_completion(&iwqp->sq_drained); } /** * i40iw_drain_rq - drain the receive queue * @ibqp: ib qp pointer */ static void i40iw_drain_rq(struct ib_qp *ibqp) { struct i40iw_qp *iwqp = to_iwqp(ibqp); struct i40iw_sc_qp *qp = &iwqp->sc_qp; if (I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring)) wait_for_completion(&iwqp->rq_drained); } /** * i40iw_hwreg_mr - send cqp command for memory registration * @iwdev: iwarp device * @iwmr: iwarp mr pointer * @access: access for MR */ static int i40iw_hwreg_mr(struct i40iw_device *iwdev, struct i40iw_mr *iwmr, u16 access) { struct i40iw_pbl *iwpbl = &iwmr->iwpbl; struct i40iw_reg_ns_stag_info *stag_info; struct ib_pd *pd = iwmr->ibmr.pd; struct i40iw_pd *iwpd = to_iwpd(pd); struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; enum i40iw_status_code status; int err = 0; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return -ENOMEM; cqp_info = &cqp_request->info; stag_info = &cqp_info->in.u.mr_reg_non_shared.info; memset(stag_info, 0, sizeof(*stag_info)); stag_info->va = (void *)(unsigned long)iwpbl->user_base; stag_info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT; stag_info->stag_key = (u8)iwmr->stag; stag_info->total_len = iwmr->length; stag_info->access_rights = access; stag_info->pd_id = iwpd->sc_pd.pd_id; stag_info->all_memory = pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY; stag_info->addr_type = I40IW_ADDR_TYPE_VA_BASED; stag_info->page_size = iwmr->page_size; if (iwpbl->pbl_allocated) { if (palloc->level == I40IW_LEVEL_1) { stag_info->first_pm_pbl_index = palloc->level1.idx; stag_info->chunk_size = 1; } else { stag_info->first_pm_pbl_index = palloc->level2.root.idx; stag_info->chunk_size = 3; } } else { stag_info->reg_addr_pa = iwmr->pgaddrmem[0]; } cqp_info->cqp_cmd = OP_MR_REG_NON_SHARED; cqp_info->post_sq = 1; cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->sc_dev; cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) { err = -ENOMEM; i40iw_pr_err("CQP-OP MR Reg fail"); } return err; } /** * i40iw_reg_user_mr - Register a user memory region * @pd: ptr of pd * @start: virtual start address * @length: length of mr * @virt: virtual address * @acc: access of mr * @udata: user data */ static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u64 virt, int acc, struct ib_udata *udata) { struct i40iw_pd *iwpd = to_iwpd(pd); struct i40iw_device *iwdev = to_iwdev(pd->device); struct i40iw_ucontext *ucontext = rdma_udata_to_drv_context( udata, struct i40iw_ucontext, ibucontext); struct i40iw_pble_alloc *palloc; struct i40iw_pbl *iwpbl; struct i40iw_mr *iwmr; struct ib_umem *region; struct i40iw_mem_reg_req req; u32 stag = 0; u16 access; bool use_pbles = false; unsigned long flags; int err = -ENOSYS; int ret; if (!udata) return ERR_PTR(-EOPNOTSUPP); if (iwdev->closing) return ERR_PTR(-ENODEV); if (length > I40IW_MAX_MR_SIZE) return ERR_PTR(-EINVAL); region = ib_umem_get(pd->device, start, length, acc); if (IS_ERR(region)) return (struct ib_mr *)region; if (ib_copy_from_udata(&req, udata, sizeof(req))) { ib_umem_release(region); return ERR_PTR(-EFAULT); } iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL); if (!iwmr) { ib_umem_release(region); return ERR_PTR(-ENOMEM); } iwpbl = &iwmr->iwpbl; iwpbl->iwmr = iwmr; iwmr->region = region; iwmr->ibmr.pd = pd; iwmr->ibmr.device = pd->device; iwmr->page_size = PAGE_SIZE; if (req.reg_type == IW_MEMREG_TYPE_MEM) iwmr->page_size = ib_umem_find_best_pgsz(region, SZ_4K | SZ_2M, virt); iwmr->length = region->length; iwpbl->user_base = virt; palloc = &iwpbl->pble_alloc; iwmr->type = req.reg_type; iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size); switch (req.reg_type) { case IW_MEMREG_TYPE_QP: use_pbles = ((req.sq_pages + req.rq_pages) > 2); err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles); if (err) goto error; spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags); list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list); iwpbl->on_list = true; spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); break; case IW_MEMREG_TYPE_CQ: use_pbles = (req.cq_pages > 1); err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles); if (err) goto error; spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list); iwpbl->on_list = true; spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); break; case IW_MEMREG_TYPE_MEM: use_pbles = (iwmr->page_cnt != 1); access = I40IW_ACCESS_FLAGS_LOCALREAD; err = i40iw_setup_pbles(iwdev, iwmr, use_pbles); if (err) goto error; if (use_pbles) { ret = i40iw_check_mr_contiguous(palloc, iwmr->page_size); if (ret) { i40iw_free_pble(iwdev->pble_rsrc, palloc); iwpbl->pbl_allocated = false; } } access |= i40iw_get_user_access(acc); stag = i40iw_create_stag(iwdev); if (!stag) { err = -ENOMEM; goto error; } iwmr->stag = stag; iwmr->ibmr.rkey = stag; iwmr->ibmr.lkey = stag; err = i40iw_hwreg_mr(iwdev, iwmr, access); if (err) { i40iw_free_stag(iwdev, stag); goto error; } break; default: goto error; } iwmr->type = req.reg_type; if (req.reg_type == IW_MEMREG_TYPE_MEM) i40iw_add_pdusecount(iwpd); return &iwmr->ibmr; error: if (palloc->level != I40IW_LEVEL_0 && iwpbl->pbl_allocated) i40iw_free_pble(iwdev->pble_rsrc, palloc); ib_umem_release(region); kfree(iwmr); return ERR_PTR(err); } /** * i40iw_reg_phys_mr - register kernel physical memory * @pd: ibpd pointer * @addr: physical address of memory to register * @size: size of memory to register * @acc: Access rights * @iova_start: start of virtual address for physical buffers */ struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd, u64 addr, u64 size, int acc, u64 *iova_start) { struct i40iw_pd *iwpd = to_iwpd(pd); struct i40iw_device *iwdev = to_iwdev(pd->device); struct i40iw_pbl *iwpbl; struct i40iw_mr *iwmr; enum i40iw_status_code status; u32 stag; u16 access = I40IW_ACCESS_FLAGS_LOCALREAD; int ret; iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL); if (!iwmr) return ERR_PTR(-ENOMEM); iwmr->ibmr.pd = pd; iwmr->ibmr.device = pd->device; iwpbl = &iwmr->iwpbl; iwpbl->iwmr = iwmr; iwmr->type = IW_MEMREG_TYPE_MEM; iwpbl->user_base = *iova_start; stag = i40iw_create_stag(iwdev); if (!stag) { ret = -EOVERFLOW; goto err; } access |= i40iw_get_user_access(acc); iwmr->stag = stag; iwmr->ibmr.rkey = stag; iwmr->ibmr.lkey = stag; iwmr->page_cnt = 1; iwmr->pgaddrmem[0] = addr; iwmr->length = size; status = i40iw_hwreg_mr(iwdev, iwmr, access); if (status) { i40iw_free_stag(iwdev, stag); ret = -ENOMEM; goto err; } i40iw_add_pdusecount(iwpd); return &iwmr->ibmr; err: kfree(iwmr); return ERR_PTR(ret); } /** * i40iw_get_dma_mr - register physical mem * @pd: ptr of pd * @acc: access for memory */ static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc) { u64 kva = 0; return i40iw_reg_phys_mr(pd, 0, 0, acc, &kva); } /** * i40iw_del_mem_list - Deleting pbl list entries for CQ/QP * @iwmr: iwmr for IB's user page addresses * @ucontext: ptr to user context */ static void i40iw_del_memlist(struct i40iw_mr *iwmr, struct i40iw_ucontext *ucontext) { struct i40iw_pbl *iwpbl = &iwmr->iwpbl; unsigned long flags; switch (iwmr->type) { case IW_MEMREG_TYPE_CQ: spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); if (iwpbl->on_list) { iwpbl->on_list = false; list_del(&iwpbl->list); } spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); break; case IW_MEMREG_TYPE_QP: spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags); if (iwpbl->on_list) { iwpbl->on_list = false; list_del(&iwpbl->list); } spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); break; default: break; } } /** * i40iw_dereg_mr - deregister mr * @ib_mr: mr ptr for dereg */ static int i40iw_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata) { struct ib_pd *ibpd = ib_mr->pd; struct i40iw_pd *iwpd = to_iwpd(ibpd); struct i40iw_mr *iwmr = to_iwmr(ib_mr); struct i40iw_device *iwdev = to_iwdev(ib_mr->device); enum i40iw_status_code status; struct i40iw_dealloc_stag_info *info; struct i40iw_pbl *iwpbl = &iwmr->iwpbl; struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; u32 stag_idx; ib_umem_release(iwmr->region); if (iwmr->type != IW_MEMREG_TYPE_MEM) { /* region is released. only test for userness. */ if (iwmr->region) { struct i40iw_ucontext *ucontext = rdma_udata_to_drv_context( udata, struct i40iw_ucontext, ibucontext); i40iw_del_memlist(iwmr, ucontext); } if (iwpbl->pbl_allocated && iwmr->type != IW_MEMREG_TYPE_QP) i40iw_free_pble(iwdev->pble_rsrc, palloc); kfree(iwmr); return 0; } cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true); if (!cqp_request) return -ENOMEM; cqp_info = &cqp_request->info; info = &cqp_info->in.u.dealloc_stag.info; memset(info, 0, sizeof(*info)); info->pd_id = cpu_to_le32(iwpd->sc_pd.pd_id & 0x00007fff); info->stag_idx = RS_64_1(ib_mr->rkey, I40IW_CQPSQ_STAG_IDX_SHIFT); stag_idx = info->stag_idx; info->mr = true; if (iwpbl->pbl_allocated) info->dealloc_pbl = true; cqp_info->cqp_cmd = OP_DEALLOC_STAG; cqp_info->post_sq = 1; cqp_info->in.u.dealloc_stag.dev = &iwdev->sc_dev; cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); if (status) i40iw_pr_err("CQP-OP dealloc failed for stag_idx = 0x%x\n", stag_idx); i40iw_rem_pdusecount(iwpd, iwdev); i40iw_free_stag(iwdev, iwmr->stag); if (iwpbl->pbl_allocated) i40iw_free_pble(iwdev->pble_rsrc, palloc); kfree(iwmr); return 0; } /** * hw_rev_show */ static ssize_t hw_rev_show(struct device *dev, struct device_attribute *attr, char *buf) { struct i40iw_ib_device *iwibdev = rdma_device_to_drv_device(dev, struct i40iw_ib_device, ibdev); u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev; return sprintf(buf, "%x\n", hw_rev); } static DEVICE_ATTR_RO(hw_rev); /** * hca_type_show */ static ssize_t hca_type_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "I40IW\n"); } static DEVICE_ATTR_RO(hca_type); /** * board_id_show */ static ssize_t board_id_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "%.*s\n", 32, "I40IW Board ID"); } static DEVICE_ATTR_RO(board_id); static struct attribute *i40iw_dev_attributes[] = { &dev_attr_hw_rev.attr, &dev_attr_hca_type.attr, &dev_attr_board_id.attr, NULL }; static const struct attribute_group i40iw_attr_group = { .attrs = i40iw_dev_attributes, }; /** * i40iw_copy_sg_list - copy sg list for qp * @sg_list: copied into sg_list * @sgl: copy from sgl * @num_sges: count of sg entries */ static void i40iw_copy_sg_list(struct i40iw_sge *sg_list, struct ib_sge *sgl, int num_sges) { unsigned int i; for (i = 0; (i < num_sges) && (i < I40IW_MAX_WQ_FRAGMENT_COUNT); i++) { sg_list[i].tag_off = sgl[i].addr; sg_list[i].len = sgl[i].length; sg_list[i].stag = sgl[i].lkey; } } /** * i40iw_post_send - kernel application wr * @ibqp: qp ptr for wr * @ib_wr: work request ptr * @bad_wr: return of bad wr if err */ static int i40iw_post_send(struct ib_qp *ibqp, const struct ib_send_wr *ib_wr, const struct ib_send_wr **bad_wr) { struct i40iw_qp *iwqp; struct i40iw_qp_uk *ukqp; struct i40iw_post_sq_info info; enum i40iw_status_code ret; int err = 0; unsigned long flags; bool inv_stag; iwqp = (struct i40iw_qp *)ibqp; ukqp = &iwqp->sc_qp.qp_uk; spin_lock_irqsave(&iwqp->lock, flags); if (iwqp->flush_issued) { err = -EINVAL; goto out; } while (ib_wr) { inv_stag = false; memset(&info, 0, sizeof(info)); info.wr_id = (u64)(ib_wr->wr_id); if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all) info.signaled = true; if (ib_wr->send_flags & IB_SEND_FENCE) info.read_fence = true; switch (ib_wr->opcode) { case IB_WR_SEND: case IB_WR_SEND_WITH_INV: if (ib_wr->opcode == IB_WR_SEND) { if (ib_wr->send_flags & IB_SEND_SOLICITED) info.op_type = I40IW_OP_TYPE_SEND_SOL; else info.op_type = I40IW_OP_TYPE_SEND; } else { if (ib_wr->send_flags & IB_SEND_SOLICITED) info.op_type = I40IW_OP_TYPE_SEND_SOL_INV; else info.op_type = I40IW_OP_TYPE_SEND_INV; } if (ib_wr->send_flags & IB_SEND_INLINE) { info.op.inline_send.data = (void *)(unsigned long)ib_wr->sg_list[0].addr; info.op.inline_send.len = ib_wr->sg_list[0].length; ret = ukqp->ops.iw_inline_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false); } else { info.op.send.num_sges = ib_wr->num_sge; info.op.send.sg_list = (struct i40iw_sge *)ib_wr->sg_list; ret = ukqp->ops.iw_send(ukqp, &info, ib_wr->ex.invalidate_rkey, false); } if (ret) { if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED) err = -ENOMEM; else err = -EINVAL; } break; case IB_WR_RDMA_WRITE: info.op_type = I40IW_OP_TYPE_RDMA_WRITE; if (ib_wr->send_flags & IB_SEND_INLINE) { info.op.inline_rdma_write.data = (void *)(unsigned long)ib_wr->sg_list[0].addr; info.op.inline_rdma_write.len = ib_wr->sg_list[0].length; info.op.inline_rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr; info.op.inline_rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey; ret = ukqp->ops.iw_inline_rdma_write(ukqp, &info, false); } else { info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list; info.op.rdma_write.num_lo_sges = ib_wr->num_sge; info.op.rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr; info.op.rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey; ret = ukqp->ops.iw_rdma_write(ukqp, &info, false); } if (ret) { if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED) err = -ENOMEM; else err = -EINVAL; } break; case IB_WR_RDMA_READ_WITH_INV: inv_stag = true; fallthrough; case IB_WR_RDMA_READ: if (ib_wr->num_sge > I40IW_MAX_SGE_RD) { err = -EINVAL; break; } info.op_type = I40IW_OP_TYPE_RDMA_READ; info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr; info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey; info.op.rdma_read.lo_addr.tag_off = ib_wr->sg_list->addr; info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey; info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length; ret = ukqp->ops.iw_rdma_read(ukqp, &info, inv_stag, false); if (ret) { if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED) err = -ENOMEM; else err = -EINVAL; } break; case IB_WR_LOCAL_INV: info.op_type = I40IW_OP_TYPE_INV_STAG; info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey; ret = ukqp->ops.iw_stag_local_invalidate(ukqp, &info, true); if (ret) err = -ENOMEM; break; case IB_WR_REG_MR: { struct i40iw_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr); int flags = reg_wr(ib_wr)->access; struct i40iw_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc; struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev; struct i40iw_fast_reg_stag_info info; memset(&info, 0, sizeof(info)); info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD; info.access_rights |= i40iw_get_user_access(flags); info.stag_key = reg_wr(ib_wr)->key & 0xff; info.stag_idx = reg_wr(ib_wr)->key >> 8; info.page_size = reg_wr(ib_wr)->mr->page_size; info.wr_id = ib_wr->wr_id; info.addr_type = I40IW_ADDR_TYPE_VA_BASED; info.va = (void *)(uintptr_t)iwmr->ibmr.iova; info.total_len = iwmr->ibmr.length; info.reg_addr_pa = *(u64 *)palloc->level1.addr; info.first_pm_pbl_index = palloc->level1.idx; info.local_fence = ib_wr->send_flags & IB_SEND_FENCE; info.signaled = ib_wr->send_flags & IB_SEND_SIGNALED; if (iwmr->npages > I40IW_MIN_PAGES_PER_FMR) info.chunk_size = 1; ret = dev->iw_priv_qp_ops->iw_mr_fast_register(&iwqp->sc_qp, &info, true); if (ret) err = -ENOMEM; break; } default: err = -EINVAL; i40iw_pr_err(" upost_send bad opcode = 0x%x\n", ib_wr->opcode); break; } if (err) break; ib_wr = ib_wr->next; } out: if (err) *bad_wr = ib_wr; else ukqp->ops.iw_qp_post_wr(ukqp); spin_unlock_irqrestore(&iwqp->lock, flags); return err; } /** * i40iw_post_recv - post receive wr for kernel application * @ibqp: ib qp pointer * @ib_wr: work request for receive * @bad_wr: bad wr caused an error */ static int i40iw_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *ib_wr, const struct ib_recv_wr **bad_wr) { struct i40iw_qp *iwqp; struct i40iw_qp_uk *ukqp; struct i40iw_post_rq_info post_recv; struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT]; enum i40iw_status_code ret = 0; unsigned long flags; int err = 0; iwqp = (struct i40iw_qp *)ibqp; ukqp = &iwqp->sc_qp.qp_uk; memset(&post_recv, 0, sizeof(post_recv)); spin_lock_irqsave(&iwqp->lock, flags); if (iwqp->flush_issued) { err = -EINVAL; goto out; } while (ib_wr) { post_recv.num_sges = ib_wr->num_sge; post_recv.wr_id = ib_wr->wr_id; i40iw_copy_sg_list(sg_list, ib_wr->sg_list, ib_wr->num_sge); post_recv.sg_list = sg_list; ret = ukqp->ops.iw_post_receive(ukqp, &post_recv); if (ret) { i40iw_pr_err(" post_recv err %d\n", ret); if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED) err = -ENOMEM; else err = -EINVAL; *bad_wr = ib_wr; goto out; } ib_wr = ib_wr->next; } out: spin_unlock_irqrestore(&iwqp->lock, flags); return err; } /** * i40iw_poll_cq - poll cq for completion (kernel apps) * @ibcq: cq to poll * @num_entries: number of entries to poll * @entry: wr of entry completed */ static int i40iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) { struct i40iw_cq *iwcq; int cqe_count = 0; struct i40iw_cq_poll_info cq_poll_info; enum i40iw_status_code ret; struct i40iw_cq_uk *ukcq; struct i40iw_sc_qp *qp; struct i40iw_qp *iwqp; unsigned long flags; iwcq = (struct i40iw_cq *)ibcq; ukcq = &iwcq->sc_cq.cq_uk; spin_lock_irqsave(&iwcq->lock, flags); while (cqe_count < num_entries) { ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info); if (ret == I40IW_ERR_QUEUE_EMPTY) { break; } else if (ret == I40IW_ERR_QUEUE_DESTROYED) { continue; } else if (ret) { if (!cqe_count) cqe_count = -1; break; } entry->wc_flags = 0; entry->wr_id = cq_poll_info.wr_id; if (cq_poll_info.error) { entry->status = IB_WC_WR_FLUSH_ERR; entry->vendor_err = cq_poll_info.major_err << 16 | cq_poll_info.minor_err; } else { entry->status = IB_WC_SUCCESS; } switch (cq_poll_info.op_type) { case I40IW_OP_TYPE_RDMA_WRITE: entry->opcode = IB_WC_RDMA_WRITE; break; case I40IW_OP_TYPE_RDMA_READ_INV_STAG: case I40IW_OP_TYPE_RDMA_READ: entry->opcode = IB_WC_RDMA_READ; break; case I40IW_OP_TYPE_SEND_SOL: case I40IW_OP_TYPE_SEND_SOL_INV: case I40IW_OP_TYPE_SEND_INV: case I40IW_OP_TYPE_SEND: entry->opcode = IB_WC_SEND; break; case I40IW_OP_TYPE_REC: entry->opcode = IB_WC_RECV; break; default: entry->opcode = IB_WC_RECV; break; } entry->ex.imm_data = 0; qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle; entry->qp = (struct ib_qp *)qp->back_qp; entry->src_qp = cq_poll_info.qp_id; iwqp = (struct i40iw_qp *)qp->back_qp; if (iwqp->iwarp_state > I40IW_QP_STATE_RTS) { if (!I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring)) complete(&iwqp->sq_drained); if (!I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring)) complete(&iwqp->rq_drained); } entry->byte_len = cq_poll_info.bytes_xfered; entry++; cqe_count++; } spin_unlock_irqrestore(&iwcq->lock, flags); return cqe_count; } /** * i40iw_req_notify_cq - arm cq kernel application * @ibcq: cq to arm * @notify_flags: notofication flags */ static int i40iw_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) { struct i40iw_cq *iwcq; struct i40iw_cq_uk *ukcq; unsigned long flags; enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_EVENT; iwcq = (struct i40iw_cq *)ibcq; ukcq = &iwcq->sc_cq.cq_uk; if (notify_flags == IB_CQ_SOLICITED) cq_notify = IW_CQ_COMPL_SOLICITED; spin_lock_irqsave(&iwcq->lock, flags); ukcq->ops.iw_cq_request_notification(ukcq, cq_notify); spin_unlock_irqrestore(&iwcq->lock, flags); return 0; } /** * i40iw_port_immutable - return port's immutable data * @ibdev: ib dev struct * @port_num: port number * @immutable: immutable data for the port return */ static int i40iw_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable) { struct ib_port_attr attr; int err; immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; err = ib_query_port(ibdev, port_num, &attr); if (err) return err; immutable->gid_tbl_len = attr.gid_tbl_len; return 0; } static const char * const i40iw_hw_stat_names[] = { // 32bit names [I40IW_HW_STAT_INDEX_IP4RXDISCARD] = "ip4InDiscards", [I40IW_HW_STAT_INDEX_IP4RXTRUNC] = "ip4InTruncatedPkts", [I40IW_HW_STAT_INDEX_IP4TXNOROUTE] = "ip4OutNoRoutes", [I40IW_HW_STAT_INDEX_IP6RXDISCARD] = "ip6InDiscards", [I40IW_HW_STAT_INDEX_IP6RXTRUNC] = "ip6InTruncatedPkts", [I40IW_HW_STAT_INDEX_IP6TXNOROUTE] = "ip6OutNoRoutes", [I40IW_HW_STAT_INDEX_TCPRTXSEG] = "tcpRetransSegs", [I40IW_HW_STAT_INDEX_TCPRXOPTERR] = "tcpInOptErrors", [I40IW_HW_STAT_INDEX_TCPRXPROTOERR] = "tcpInProtoErrors", // 64bit names [I40IW_HW_STAT_INDEX_IP4RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4InOctets", [I40IW_HW_STAT_INDEX_IP4RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4InPkts", [I40IW_HW_STAT_INDEX_IP4RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4InReasmRqd", [I40IW_HW_STAT_INDEX_IP4RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4InMcastPkts", [I40IW_HW_STAT_INDEX_IP4TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4OutOctets", [I40IW_HW_STAT_INDEX_IP4TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4OutPkts", [I40IW_HW_STAT_INDEX_IP4TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4OutSegRqd", [I40IW_HW_STAT_INDEX_IP4TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip4OutMcastPkts", [I40IW_HW_STAT_INDEX_IP6RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6InOctets", [I40IW_HW_STAT_INDEX_IP6RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6InPkts", [I40IW_HW_STAT_INDEX_IP6RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6InReasmRqd", [I40IW_HW_STAT_INDEX_IP6RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6InMcastPkts", [I40IW_HW_STAT_INDEX_IP6TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6OutOctets", [I40IW_HW_STAT_INDEX_IP6TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6OutPkts", [I40IW_HW_STAT_INDEX_IP6TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6OutSegRqd", [I40IW_HW_STAT_INDEX_IP6TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] = "ip6OutMcastPkts", [I40IW_HW_STAT_INDEX_TCPRXSEGS + I40IW_HW_STAT_INDEX_MAX_32] = "tcpInSegs", [I40IW_HW_STAT_INDEX_TCPTXSEG + I40IW_HW_STAT_INDEX_MAX_32] = "tcpOutSegs", [I40IW_HW_STAT_INDEX_RDMARXRDS + I40IW_HW_STAT_INDEX_MAX_32] = "iwInRdmaReads", [I40IW_HW_STAT_INDEX_RDMARXSNDS + I40IW_HW_STAT_INDEX_MAX_32] = "iwInRdmaSends", [I40IW_HW_STAT_INDEX_RDMARXWRS + I40IW_HW_STAT_INDEX_MAX_32] = "iwInRdmaWrites", [I40IW_HW_STAT_INDEX_RDMATXRDS + I40IW_HW_STAT_INDEX_MAX_32] = "iwOutRdmaReads", [I40IW_HW_STAT_INDEX_RDMATXSNDS + I40IW_HW_STAT_INDEX_MAX_32] = "iwOutRdmaSends", [I40IW_HW_STAT_INDEX_RDMATXWRS + I40IW_HW_STAT_INDEX_MAX_32] = "iwOutRdmaWrites", [I40IW_HW_STAT_INDEX_RDMAVBND + I40IW_HW_STAT_INDEX_MAX_32] = "iwRdmaBnd", [I40IW_HW_STAT_INDEX_RDMAVINV + I40IW_HW_STAT_INDEX_MAX_32] = "iwRdmaInv" }; static void i40iw_get_dev_fw_str(struct ib_device *dev, char *str) { struct i40iw_device *iwdev = to_iwdev(dev); snprintf(str, IB_FW_VERSION_NAME_MAX, "%llu.%llu", i40iw_fw_major_ver(&iwdev->sc_dev), i40iw_fw_minor_ver(&iwdev->sc_dev)); } /** * i40iw_alloc_hw_stats - Allocate a hw stats structure * @ibdev: device pointer from stack * @port_num: port number */ static struct rdma_hw_stats *i40iw_alloc_hw_stats(struct ib_device *ibdev, u8 port_num) { struct i40iw_device *iwdev = to_iwdev(ibdev); struct i40iw_sc_dev *dev = &iwdev->sc_dev; int num_counters = I40IW_HW_STAT_INDEX_MAX_32 + I40IW_HW_STAT_INDEX_MAX_64; unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN; BUILD_BUG_ON(ARRAY_SIZE(i40iw_hw_stat_names) != (I40IW_HW_STAT_INDEX_MAX_32 + I40IW_HW_STAT_INDEX_MAX_64)); /* * PFs get the default update lifespan, but VFs only update once * per second */ if (!dev->is_pf) lifespan = 1000; return rdma_alloc_hw_stats_struct(i40iw_hw_stat_names, num_counters, lifespan); } /** * i40iw_get_hw_stats - Populates the rdma_hw_stats structure * @ibdev: device pointer from stack * @stats: stats pointer from stack * @port_num: port number * @index: which hw counter the stack is requesting we update */ static int i40iw_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, u8 port_num, int index) { struct i40iw_device *iwdev = to_iwdev(ibdev); struct i40iw_sc_dev *dev = &iwdev->sc_dev; struct i40iw_vsi_pestat *devstat = iwdev->vsi.pestat; struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats; if (dev->is_pf) { i40iw_hw_stats_read_all(devstat, &devstat->hw_stats); } else { if (i40iw_vchnl_vf_get_pe_stats(dev, &devstat->hw_stats)) return -ENOSYS; } memcpy(&stats->value[0], hw_stats, sizeof(*hw_stats)); return stats->num_counters; } /** * i40iw_query_gid - Query port GID * @ibdev: device pointer from stack * @port: port number * @index: Entry index * @gid: Global ID */ static int i40iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct i40iw_device *iwdev = to_iwdev(ibdev); memset(gid->raw, 0, sizeof(gid->raw)); ether_addr_copy(gid->raw, iwdev->netdev->dev_addr); return 0; } static const struct ib_device_ops i40iw_dev_ops = { .owner = THIS_MODULE, .driver_id = RDMA_DRIVER_I40IW, /* NOTE: Older kernels wrongly use 0 for the uverbs_abi_ver */ .uverbs_abi_ver = I40IW_ABI_VER, .alloc_hw_stats = i40iw_alloc_hw_stats, .alloc_mr = i40iw_alloc_mr, .alloc_pd = i40iw_alloc_pd, .alloc_ucontext = i40iw_alloc_ucontext, .create_cq = i40iw_create_cq, .create_qp = i40iw_create_qp, .dealloc_pd = i40iw_dealloc_pd, .dealloc_ucontext = i40iw_dealloc_ucontext, .dereg_mr = i40iw_dereg_mr, .destroy_cq = i40iw_destroy_cq, .destroy_qp = i40iw_destroy_qp, .drain_rq = i40iw_drain_rq, .drain_sq = i40iw_drain_sq, .get_dev_fw_str = i40iw_get_dev_fw_str, .get_dma_mr = i40iw_get_dma_mr, .get_hw_stats = i40iw_get_hw_stats, .get_port_immutable = i40iw_port_immutable, .iw_accept = i40iw_accept, .iw_add_ref = i40iw_qp_add_ref, .iw_connect = i40iw_connect, .iw_create_listen = i40iw_create_listen, .iw_destroy_listen = i40iw_destroy_listen, .iw_get_qp = i40iw_get_qp, .iw_reject = i40iw_reject, .iw_rem_ref = i40iw_qp_rem_ref, .map_mr_sg = i40iw_map_mr_sg, .mmap = i40iw_mmap, .modify_qp = i40iw_modify_qp, .poll_cq = i40iw_poll_cq, .post_recv = i40iw_post_recv, .post_send = i40iw_post_send, .query_device = i40iw_query_device, .query_gid = i40iw_query_gid, .query_port = i40iw_query_port, .query_qp = i40iw_query_qp, .reg_user_mr = i40iw_reg_user_mr, .req_notify_cq = i40iw_req_notify_cq, INIT_RDMA_OBJ_SIZE(ib_pd, i40iw_pd, ibpd), INIT_RDMA_OBJ_SIZE(ib_cq, i40iw_cq, ibcq), INIT_RDMA_OBJ_SIZE(ib_ucontext, i40iw_ucontext, ibucontext), }; /** * i40iw_init_rdma_device - initialization of iwarp device * @iwdev: iwarp device */ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev) { struct i40iw_ib_device *iwibdev; struct net_device *netdev = iwdev->netdev; struct pci_dev *pcidev = iwdev->hw.pcidev; iwibdev = ib_alloc_device(i40iw_ib_device, ibdev); if (!iwibdev) { i40iw_pr_err("iwdev == NULL\n"); return NULL; } iwdev->iwibdev = iwibdev; iwibdev->iwdev = iwdev; iwibdev->ibdev.node_type = RDMA_NODE_RNIC; ether_addr_copy((u8 *)&iwibdev->ibdev.node_guid, netdev->dev_addr); iwibdev->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_QUERY_QP) | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | (1ull << IB_USER_VERBS_CMD_CREATE_AH) | (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_POST_RECV) | (1ull << IB_USER_VERBS_CMD_POST_SEND); iwibdev->ibdev.phys_port_cnt = 1; iwibdev->ibdev.num_comp_vectors = iwdev->ceqs_count; iwibdev->ibdev.dev.parent = &pcidev->dev; memcpy(iwibdev->ibdev.iw_ifname, netdev->name, sizeof(iwibdev->ibdev.iw_ifname)); ib_set_device_ops(&iwibdev->ibdev, &i40iw_dev_ops); return iwibdev; } /** * i40iw_port_ibevent - indicate port event * @iwdev: iwarp device */ void i40iw_port_ibevent(struct i40iw_device *iwdev) { struct i40iw_ib_device *iwibdev = iwdev->iwibdev; struct ib_event event; event.device = &iwibdev->ibdev; event.element.port_num = 1; event.event = iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; ib_dispatch_event(&event); } /** * i40iw_destroy_rdma_device - destroy rdma device and free resources * @iwibdev: IB device ptr */ void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev) { ib_unregister_device(&iwibdev->ibdev); wait_event_timeout(iwibdev->iwdev->close_wq, !atomic64_read(&iwibdev->iwdev->use_count), I40IW_EVENT_TIMEOUT); ib_dealloc_device(&iwibdev->ibdev); } /** * i40iw_register_rdma_device - register iwarp device to IB * @iwdev: iwarp device */ int i40iw_register_rdma_device(struct i40iw_device *iwdev) { int ret; struct i40iw_ib_device *iwibdev; iwdev->iwibdev = i40iw_init_rdma_device(iwdev); if (!iwdev->iwibdev) return -ENOMEM; iwibdev = iwdev->iwibdev; rdma_set_device_sysfs_group(&iwibdev->ibdev, &i40iw_attr_group); ret = ib_device_set_netdev(&iwibdev->ibdev, iwdev->netdev, 1); if (ret) goto error; dma_set_max_seg_size(&iwdev->hw.pcidev->dev, UINT_MAX); ret = ib_register_device(&iwibdev->ibdev, "i40iw%d", &iwdev->hw.pcidev->dev); if (ret) goto error; return 0; error: ib_dealloc_device(&iwdev->iwibdev->ibdev); return ret; }