diff options
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_verbs.c | 2903 |
1 files changed, 2903 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c new file mode 100644 index 000000000..314d19153 --- /dev/null +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -0,0 +1,2903 @@ +/******************************************************************************* +* +* 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 "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) +{ + struct i40iw_device *iwdev = to_iwdev(ibdev); + struct net_device *netdev = iwdev->netdev; + + /* props being zeroed by the caller, avoid zeroing it here */ + props->max_mtu = IB_MTU_4096; + props->active_mtu = ib_mtu_int_to_enum(netdev->mtu); + + props->lid = 1; + if (netif_carrier_ok(iwdev->netdev)) + props->state = IB_PORT_ACTIVE; + else + props->state = IB_PORT_DOWN; + 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 + * @ibdev: device pointer from stack + * @udata: user data + * + * This keeps track of all objects associated with a particular + * user-mode client. + */ +static struct ib_ucontext *i40iw_alloc_ucontext(struct ib_device *ibdev, + struct ib_udata *udata) +{ + struct i40iw_device *iwdev = to_iwdev(ibdev); + struct i40iw_alloc_ucontext_req req; + struct i40iw_alloc_ucontext_resp uresp; + struct i40iw_ucontext *ucontext; + + if (ib_copy_from_udata(&req, udata, sizeof(req))) + return ERR_PTR(-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 ERR_PTR(-EINVAL); + } + + memset(&uresp, 0, sizeof(uresp)); + 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 = kzalloc(sizeof(*ucontext), GFP_KERNEL); + if (!ucontext) + return ERR_PTR(-ENOMEM); + + ucontext->iwdev = iwdev; + ucontext->abi_ver = req.userspace_ver; + + if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) { + kfree(ucontext); + return ERR_PTR(-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 &ucontext->ibucontext; +} + +/** + * i40iw_dealloc_ucontext - deallocate the user context data structure + * @context: user context created during alloc + */ +static int i40iw_dealloc_ucontext(struct ib_ucontext *context) +{ + struct i40iw_ucontext *ucontext = to_ucontext(context); + unsigned long flags; + + spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); + if (!list_empty(&ucontext->cq_reg_mem_list)) { + spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); + return -EBUSY; + } + spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); + spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags); + if (!list_empty(&ucontext->qp_reg_mem_list)) { + spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); + return -EBUSY; + } + spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); + + kfree(ucontext); + return 0; +} + +/** + * 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); + + if (io_remap_pfn_range(vma, vma->vm_start, dbaddr >> PAGE_SHIFT, PAGE_SIZE, + pgprot_noncached(vma->vm_page_prot))) + return -EAGAIN; + + return 0; +} + +/** + * 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 + * @ibdev: device pointer from stack + * @context: user context created during alloc + * @udata: user data + */ +static struct ib_pd *i40iw_alloc_pd(struct ib_device *ibdev, + struct ib_ucontext *context, + struct ib_udata *udata) +{ + struct i40iw_pd *iwpd; + struct i40iw_device *iwdev = to_iwdev(ibdev); + struct i40iw_sc_dev *dev = &iwdev->sc_dev; + struct i40iw_alloc_pd_resp uresp; + struct i40iw_sc_pd *sc_pd; + struct i40iw_ucontext *ucontext; + u32 pd_id = 0; + int err; + + if (iwdev->closing) + return ERR_PTR(-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_PTR(err); + } + + iwpd = kzalloc(sizeof(*iwpd), GFP_KERNEL); + if (!iwpd) { + err = -ENOMEM; + goto free_res; + } + + sc_pd = &iwpd->sc_pd; + + if (context) { + ucontext = to_ucontext(context); + 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 &iwpd->ibpd; +error: + kfree(iwpd); +free_res: + i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id); + return ERR_PTR(err); +} + +/** + * i40iw_dealloc_pd - deallocate pd + * @ibpd: ptr of pd to be deallocated + */ +static int i40iw_dealloc_pd(struct ib_pd *ibpd) +{ + 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_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 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; + 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; + if (ibpd->uobject && ibpd->uobject->context) { + iwqp->user_mode = 1; + ucontext = to_ucontext(ibpd->uobject->context); + + 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 (ibpd->uobject && 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); + /* 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 + */ +static int i40iw_destroy_cq(struct ib_cq *ib_cq) +{ + struct i40iw_cq *iwcq; + struct i40iw_device *iwdev; + struct i40iw_sc_cq *cq; + + if (!ib_cq) { + i40iw_pr_err("ib_cq == NULL\n"); + return 0; + } + + 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); + kfree(iwcq); + i40iw_rem_devusecount(iwdev); + return 0; +} + +/** + * i40iw_create_cq - create cq + * @ibdev: device pointer from stack + * @attr: attributes for cq + * @context: user context created during alloc + * @udata: user data + */ +static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev, + const struct ib_cq_init_attr *attr, + struct ib_ucontext *context, + struct ib_udata *udata) +{ + struct i40iw_device *iwdev = to_iwdev(ibdev); + struct i40iw_cq *iwcq; + 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 ERR_PTR(-ENODEV); + + if (entries > iwdev->max_cqe) + return ERR_PTR(-EINVAL); + + iwcq = kzalloc(sizeof(*iwcq), GFP_KERNEL); + if (!iwcq) + return ERR_PTR(-ENOMEM); + + memset(&info, 0, sizeof(info)); + + err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs, + iwdev->max_cq, &cq_num, + &iwdev->next_cq); + if (err_code) + goto error; + + 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 (context) { + struct i40iw_ucontext *ucontext; + struct i40iw_create_cq_req req; + struct i40iw_cq_mr *cqmr; + + memset(&req, 0, sizeof(req)); + iwcq->user_mode = true; + ucontext = to_ucontext(context); + 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 (context) { + 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 (struct ib_cq *)iwcq; + +cq_destroy: + i40iw_cq_wq_destroy(iwdev, cq); +cq_free_resources: + cq_free_resources(iwdev, iwcq); +error: + kfree(iwcq); + return ERR_PTR(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; + int chunk_pages, entry, i; + struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc; + struct i40iw_pble_info *pinfo; + struct scatterlist *sg; + u64 pg_addr = 0; + u32 idx = 0; + + pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf; + + for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) { + chunk_pages = sg_dma_len(sg) >> region->page_shift; + if ((iwmr->type == IW_MEMREG_TYPE_QP) && + !iwpbl->qp_mr.sq_page) + iwpbl->qp_mr.sq_page = sg_page(sg); + for (i = 0; i < chunk_pages; i++) { + pg_addr = sg_dma_address(sg) + + (i << region->page_shift); + + if ((entry + i) == 0) + *pbl = cpu_to_le64(pg_addr & iwmr->page_msk); + else if (!(pg_addr & ~iwmr->page_msk)) + *pbl = cpu_to_le64(pg_addr); + else + continue; + pbl = i40iw_next_pbl_addr(pbl, &pinfo, &idx); + } + } +} + +/** + * i40iw_set_hugetlb_params - set MR pg size and mask to huge pg values. + * @addr: virtual address + * @iwmr: mr pointer for this memory registration + */ +static void i40iw_set_hugetlb_values(u64 addr, struct i40iw_mr *iwmr) +{ + struct vm_area_struct *vma; + struct hstate *h; + + down_read(¤t->mm->mmap_sem); + vma = find_vma(current->mm, addr); + if (vma && is_vm_hugetlb_page(vma)) { + h = hstate_vma(vma); + if (huge_page_size(h) == 0x200000) { + iwmr->page_size = huge_page_size(h); + iwmr->page_msk = huge_page_mask(h); + } + } + up_read(¤t->mm->mmap_sem); +} + +/** + * 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 + */ +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; + 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; + 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 (iwdev->closing) + return ERR_PTR(-ENODEV); + + if (length > I40IW_MAX_MR_SIZE) + return ERR_PTR(-EINVAL); + region = ib_umem_get(pd->uobject->context, start, length, acc, 0); + 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; + ucontext = to_ucontext(pd->uobject->context); + + iwmr->page_size = PAGE_SIZE; + iwmr->page_msk = PAGE_MASK; + + if (region->hugetlb && (req.reg_type == IW_MEMREG_TYPE_MEM)) + i40iw_set_hugetlb_values(start, iwmr); + + 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_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; + + if (iwmr->region) + ib_umem_release(iwmr->region); + + if (iwmr->type != IW_MEMREG_TYPE_MEM) { + if (ibpd->uobject) { + struct i40iw_ucontext *ucontext; + + ucontext = to_ucontext(ibpd->uobject->context); + 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; +} + +/** + * i40iw_show_rev + */ +static ssize_t i40iw_show_rev(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i40iw_ib_device *iwibdev = container_of(dev, + struct i40iw_ib_device, + ibdev.dev); + u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev; + + return sprintf(buf, "%x\n", hw_rev); +} + +/** + * i40iw_show_hca + */ +static ssize_t i40iw_show_hca(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "I40IW\n"); +} + +/** + * i40iw_show_board + */ +static ssize_t i40iw_show_board(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sprintf(buf, "%.*s\n", 32, "I40IW Board ID"); +} + +static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL); +static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL); +static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL); + +static struct device_attribute *i40iw_dev_attributes[] = { + &dev_attr_hw_rev, + &dev_attr_hca_type, + &dev_attr_board_id +}; + +/** + * 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; +} + +/** + * i40iw_get_vector_affinity - report IRQ affinity mask + * @ibdev: IB device + * @comp_vector: completion vector index + */ +static const struct cpumask *i40iw_get_vector_affinity(struct ib_device *ibdev, + int comp_vector) +{ + struct i40iw_device *iwdev = to_iwdev(ibdev); + struct i40iw_msix_vector *msix_vec; + + if (iwdev->msix_shared) + msix_vec = &iwdev->iw_msixtbl[comp_vector]; + else + msix_vec = &iwdev->iw_msixtbl[comp_vector + 1]; + + return irq_get_affinity_mask(msix_vec->irq); +} + +/** + * 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 = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev)); + if (!iwibdev) { + i40iw_pr_err("iwdev == NULL\n"); + return NULL; + } + strlcpy(iwibdev->ibdev.name, "i40iw%d", IB_DEVICE_NAME_MAX); + iwibdev->ibdev.owner = THIS_MODULE; + 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; + iwibdev->ibdev.query_port = i40iw_query_port; + iwibdev->ibdev.query_pkey = i40iw_query_pkey; + iwibdev->ibdev.query_gid = i40iw_query_gid; + iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext; + iwibdev->ibdev.dealloc_ucontext = i40iw_dealloc_ucontext; + iwibdev->ibdev.mmap = i40iw_mmap; + iwibdev->ibdev.alloc_pd = i40iw_alloc_pd; + iwibdev->ibdev.dealloc_pd = i40iw_dealloc_pd; + iwibdev->ibdev.create_qp = i40iw_create_qp; + iwibdev->ibdev.modify_qp = i40iw_modify_qp; + iwibdev->ibdev.query_qp = i40iw_query_qp; + iwibdev->ibdev.destroy_qp = i40iw_destroy_qp; + iwibdev->ibdev.create_cq = i40iw_create_cq; + iwibdev->ibdev.destroy_cq = i40iw_destroy_cq; + iwibdev->ibdev.get_dma_mr = i40iw_get_dma_mr; + iwibdev->ibdev.reg_user_mr = i40iw_reg_user_mr; + iwibdev->ibdev.dereg_mr = i40iw_dereg_mr; + iwibdev->ibdev.alloc_hw_stats = i40iw_alloc_hw_stats; + iwibdev->ibdev.get_hw_stats = i40iw_get_hw_stats; + iwibdev->ibdev.query_device = i40iw_query_device; + iwibdev->ibdev.drain_sq = i40iw_drain_sq; + iwibdev->ibdev.drain_rq = i40iw_drain_rq; + iwibdev->ibdev.alloc_mr = i40iw_alloc_mr; + iwibdev->ibdev.map_mr_sg = i40iw_map_mr_sg; + iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL); + if (!iwibdev->ibdev.iwcm) { + ib_dealloc_device(&iwibdev->ibdev); + return NULL; + } + + iwibdev->ibdev.iwcm->add_ref = i40iw_add_ref; + iwibdev->ibdev.iwcm->rem_ref = i40iw_rem_ref; + iwibdev->ibdev.iwcm->get_qp = i40iw_get_qp; + iwibdev->ibdev.iwcm->connect = i40iw_connect; + iwibdev->ibdev.iwcm->accept = i40iw_accept; + iwibdev->ibdev.iwcm->reject = i40iw_reject; + iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen; + iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen; + memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name, + sizeof(iwibdev->ibdev.iwcm->ifname)); + iwibdev->ibdev.get_port_immutable = i40iw_port_immutable; + iwibdev->ibdev.get_dev_fw_str = i40iw_get_dev_fw_str; + iwibdev->ibdev.poll_cq = i40iw_poll_cq; + iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq; + iwibdev->ibdev.post_send = i40iw_post_send; + iwibdev->ibdev.post_recv = i40iw_post_recv; + iwibdev->ibdev.get_vector_affinity = i40iw_get_vector_affinity; + + 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_unregister_rdma_device - unregister of iwarp from IB + * @iwibdev: rdma device ptr + */ +static void i40iw_unregister_rdma_device(struct i40iw_ib_device *iwibdev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) + device_remove_file(&iwibdev->ibdev.dev, + i40iw_dev_attributes[i]); + ib_unregister_device(&iwibdev->ibdev); +} + +/** + * i40iw_destroy_rdma_device - destroy rdma device and free resources + * @iwibdev: IB device ptr + */ +void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev) +{ + if (!iwibdev) + return; + + i40iw_unregister_rdma_device(iwibdev); + kfree(iwibdev->ibdev.iwcm); + iwibdev->ibdev.iwcm = NULL; + 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 i, ret; + struct i40iw_ib_device *iwibdev; + + iwdev->iwibdev = i40iw_init_rdma_device(iwdev); + if (!iwdev->iwibdev) + return -ENOMEM; + iwibdev = iwdev->iwibdev; + + iwibdev->ibdev.driver_id = RDMA_DRIVER_I40IW; + ret = ib_register_device(&iwibdev->ibdev, NULL); + if (ret) + goto error; + + for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) { + ret = + device_create_file(&iwibdev->ibdev.dev, + i40iw_dev_attributes[i]); + if (ret) { + while (i > 0) { + i--; + device_remove_file(&iwibdev->ibdev.dev, i40iw_dev_attributes[i]); + } + ib_unregister_device(&iwibdev->ibdev); + goto error; + } + } + return 0; +error: + kfree(iwdev->iwibdev->ibdev.iwcm); + iwdev->iwibdev->ibdev.iwcm = NULL; + ib_dealloc_device(&iwdev->iwibdev->ibdev); + return ret; +} |