diff options
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_verbs.c | 2789 |
1 files changed, 0 insertions, 2789 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c deleted file mode 100644 index c335de91508f..000000000000 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ /dev/null @@ -1,2789 +0,0 @@ -/******************************************************************************* -* -* 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 <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/random.h> -#include <linux/highmem.h> -#include <linux/time.h> -#include <linux/hugetlb.h> -#include <linux/irq.h> -#include <asm/byteorder.h> -#include <net/ip.h> -#include <rdma/ib_verbs.h> -#include <rdma/iw_cm.h> -#include <rdma/ib_user_verbs.h> -#include <rdma/ib_umem.h> -#include <rdma/uverbs_ioctl.h> -#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_VERSION; - 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_map_per_fmr = 1; - 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->pkey_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; - u64 db_addr_offset, push_offset, pfn; - - ucontext = to_ucontext(context); - if (ucontext->iwdev->sc_dev.is_pf) { - db_addr_offset = I40IW_DB_ADDR_OFFSET; - push_offset = I40IW_PUSH_OFFSET; - if (vma->vm_pgoff) - vma->vm_pgoff += I40IW_PF_FIRST_PUSH_PAGE_INDEX - 1; - } else { - db_addr_offset = I40IW_VF_DB_ADDR_OFFSET; - push_offset = I40IW_VF_PUSH_OFFSET; - if (vma->vm_pgoff) - vma->vm_pgoff += I40IW_VF_FIRST_PUSH_PAGE_INDEX - 1; - } - - vma->vm_pgoff += db_addr_offset >> PAGE_SHIFT; - - if (vma->vm_pgoff == (db_addr_offset >> PAGE_SHIFT)) { - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - } else { - if ((vma->vm_pgoff - (push_offset >> PAGE_SHIFT)) % 2) - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - else - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - } - - pfn = vma->vm_pgoff + - (pci_resource_start(ucontext->iwdev->ldev->pcidev, 0) >> - PAGE_SHIFT); - - return rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE, - 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 void 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); -} - -/** - * 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_device *iwdev, - struct i40iw_qp *iwqp, - u32 qp_num) -{ - struct i40iw_pbl *iwpbl = &iwqp->iwpbl; - - 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->allocated_buffer); -} - -/** - * 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); - - 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); - } - } - - i40iw_rem_ref(&iwqp->ibqp); - 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; - void *mem; - 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; - - mem = kzalloc(sizeof(*iwqp), GFP_KERNEL); - if (!mem) - return ERR_PTR(-ENOMEM); - - iwqp = (struct i40iw_qp *)mem; - iwqp->allocated_buffer = mem; - qp = &iwqp->sc_qp; - qp->back_qp = (void *)iwqp; - qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX; - - 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->iwdev = iwdev; - 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 = -EINVAL; - 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; - } - - i40iw_add_ref(&iwqp->ibqp); - 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); - - return &iwqp->ibqp; -error: - i40iw_free_qp_resources(iwdev, iwqp, qp_num); - 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); - /* fall through */ - 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 void 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); -} - -/** - * 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_for_each_block(region->sg_head.sgl, &biter, region->nmap, - 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 i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.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->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 - * @udata: user data or NULL for kernel objects - */ -static struct ib_mr *i40iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, - u32 max_num_sg, struct ib_udata *udata) -{ - 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; - 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 i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.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->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; - u64 pbl_depth = 0; - u32 stag = 0; - u16 access; - u64 region_length; - bool use_pbles = false; - unsigned long flags; - int err = -ENOSYS; - int ret; - int pg_shift; - - 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); - - region_length = region->length + (start & (iwmr->page_size - 1)); - pg_shift = ffs(iwmr->page_size) - 1; - pbl_depth = region_length >> pg_shift; - pbl_depth += (region_length & (iwmr->page_size - 1)) ? 1 : 0; - iwmr->length = region->length; - - iwpbl->user_base = virt; - palloc = &iwpbl->pble_alloc; - - iwmr->type = req.reg_type; - iwmr->page_cnt = (u32)pbl_depth; - - 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: - /* fall-through */ - 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; - /* fall-through*/ - 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->pkey_tbl_len = attr.pkey_tbl_len; - 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) -{ - u32 firmware_version = I40IW_FW_VERSION; - - snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u", firmware_version, - (firmware_version & 0x000000ff)); -} - -/** - * 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; -} - -/** - * i40iw_query_pkey - Query partition key - * @ibdev: device pointer from stack - * @port: port number - * @index: index of pkey - * @pkey: pointer to store the pkey - */ -static int i40iw_query_pkey(struct ib_device *ibdev, - u8 port, - u16 index, - u16 *pkey) -{ - *pkey = 0; - 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_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_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_pkey = i40iw_query_pkey, - .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 = (struct pci_dev *)iwdev->hw.dev_context; - - 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; - - ret = ib_register_device(&iwibdev->ibdev, "i40iw%d"); - if (ret) - goto error; - - return 0; -error: - ib_dealloc_device(&iwdev->iwibdev->ibdev); - return ret; -} |