diff options
Diffstat (limited to 'kernel/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c')
| -rw-r--r-- | kernel/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 313 |
1 files changed, 186 insertions, 127 deletions
diff --git a/kernel/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/kernel/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 219f2122f..76e96f97b 100644 --- a/kernel/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/kernel/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -1,21 +1,36 @@ -/******************************************************************* - * This file is part of the Emulex RoCE Device Driver for * - * RoCE (RDMA over Converged Ethernet) adapters. * - * Copyright (C) 2008-2012 Emulex. All rights reserved. * - * EMULEX and SLI are trademarks of Emulex. * - * www.emulex.com * - * * - * This program is free software; you can redistribute it and/or * - * modify it under the terms of version 2 of the GNU General * - * Public License as published by the Free Software Foundation. * - * This program is distributed in the hope that it will be useful. * - * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * - * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * - * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * - * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * - * TO BE LEGALLY INVALID. See the GNU General Public License for * - * more details, a copy of which can be found in the file COPYING * - * included with this package. * +/* This file is part of the Emulex RoCE Device Driver for + * RoCE (RDMA over Converged Ethernet) adapters. + * Copyright (C) 2012-2015 Emulex. All rights reserved. + * EMULEX and SLI are trademarks of Emulex. + * www.emulex.com + * + * 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 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. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Contact Information: * linux-drivers@emulex.com @@ -23,7 +38,7 @@ * Emulex * 3333 Susan Street * Costa Mesa, CA 92626 - *******************************************************************/ + */ #include <linux/dma-mapping.h> #include <rdma/ib_verbs.h> @@ -31,6 +46,7 @@ #include <rdma/iw_cm.h> #include <rdma/ib_umem.h> #include <rdma/ib_addr.h> +#include <rdma/ib_cache.h> #include "ocrdma.h" #include "ocrdma_hw.h" @@ -49,6 +65,7 @@ int ocrdma_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) int ocrdma_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *sgid) { + int ret; struct ocrdma_dev *dev; dev = get_ocrdma_dev(ibdev); @@ -56,15 +73,39 @@ int ocrdma_query_gid(struct ib_device *ibdev, u8 port, if (index >= OCRDMA_MAX_SGID) return -EINVAL; - memcpy(sgid, &dev->sgid_tbl[index], sizeof(*sgid)); + ret = ib_get_cached_gid(ibdev, port, index, sgid, NULL); + if (ret == -EAGAIN) { + memcpy(sgid, &zgid, sizeof(*sgid)); + return 0; + } + + return ret; +} + +int ocrdma_add_gid(struct ib_device *device, + u8 port_num, + unsigned int index, + const union ib_gid *gid, + const struct ib_gid_attr *attr, + void **context) { + return 0; +} +int ocrdma_del_gid(struct ib_device *device, + u8 port_num, + unsigned int index, + void **context) { return 0; } -int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr) +int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, + struct ib_udata *uhw) { struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); + if (uhw->inlen || uhw->outlen) + return -EINVAL; + memset(attr, 0, sizeof *attr); memcpy(&attr->fw_ver, &dev->attr.fw_ver[0], min(sizeof(dev->attr.fw_ver), sizeof(attr->fw_ver))); @@ -106,13 +147,31 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr) return 0; } +struct net_device *ocrdma_get_netdev(struct ib_device *ibdev, u8 port_num) +{ + struct ocrdma_dev *dev; + struct net_device *ndev = NULL; + + rcu_read_lock(); + + dev = get_ocrdma_dev(ibdev); + if (dev) + ndev = dev->nic_info.netdev; + if (ndev) + dev_hold(ndev); + + rcu_read_unlock(); + + return ndev; +} + static inline void get_link_speed_and_width(struct ocrdma_dev *dev, u8 *ib_speed, u8 *ib_width) { int status; u8 speed; - status = ocrdma_mbx_get_link_speed(dev, &speed); + status = ocrdma_mbx_get_link_speed(dev, &speed, NULL); if (status) speed = OCRDMA_PHYS_LINK_SPEED_ZERO; @@ -175,7 +234,8 @@ int ocrdma_query_port(struct ib_device *ibdev, props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | - IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_IP_BASED_GIDS; + IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | + IB_PORT_IP_BASED_GIDS; props->gid_tbl_len = OCRDMA_MAX_SGID; props->pkey_tbl_len = 1; props->bad_pkey_cntr = 0; @@ -375,7 +435,12 @@ static struct ocrdma_pd *_ocrdma_alloc_pd(struct ocrdma_dev *dev, if (dev->pd_mgr->pd_prealloc_valid) { status = ocrdma_get_pd_num(dev, pd); - return (status == 0) ? pd : ERR_PTR(status); + if (status == 0) { + return pd; + } else { + kfree(pd); + return ERR_PTR(status); + } } retry: @@ -948,6 +1013,7 @@ int ocrdma_dereg_mr(struct ib_mr *ib_mr) (void) ocrdma_mbx_dealloc_lkey(dev, mr->hwmr.fr_mr, mr->hwmr.lkey); + kfree(mr->pages); ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); /* it could be user registered memory. */ @@ -999,10 +1065,12 @@ err: return status; } -struct ib_cq *ocrdma_create_cq(struct ib_device *ibdev, int entries, int vector, +struct ib_cq *ocrdma_create_cq(struct ib_device *ibdev, + const struct ib_cq_init_attr *attr, struct ib_ucontext *ib_ctx, struct ib_udata *udata) { + int entries = attr->cqe; struct ocrdma_cq *cq; struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); struct ocrdma_ucontext *uctx = NULL; @@ -1010,6 +1078,9 @@ struct ib_cq *ocrdma_create_cq(struct ib_device *ibdev, int entries, int vector, int status; struct ocrdma_create_cq_ureq ureq; + if (attr->flags) + return ERR_PTR(-EINVAL); + if (udata) { if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) return ERR_PTR(-EFAULT); @@ -1927,13 +1998,13 @@ static void ocrdma_build_ud_hdr(struct ocrdma_qp *qp, { struct ocrdma_ewqe_ud_hdr *ud_hdr = (struct ocrdma_ewqe_ud_hdr *)(hdr + 1); - struct ocrdma_ah *ah = get_ocrdma_ah(wr->wr.ud.ah); + struct ocrdma_ah *ah = get_ocrdma_ah(ud_wr(wr)->ah); - ud_hdr->rsvd_dest_qpn = wr->wr.ud.remote_qpn; + ud_hdr->rsvd_dest_qpn = ud_wr(wr)->remote_qpn; if (qp->qp_type == IB_QPT_GSI) ud_hdr->qkey = qp->qkey; else - ud_hdr->qkey = wr->wr.ud.remote_qkey; + ud_hdr->qkey = ud_wr(wr)->remote_qkey; ud_hdr->rsvd_ahid = ah->id; if (ah->av->valid & OCRDMA_AV_VLAN_VALID) hdr->cw |= (OCRDMA_FLAG_AH_VLAN_PR << OCRDMA_WQE_FLAGS_SHIFT); @@ -2036,9 +2107,9 @@ static int ocrdma_build_write(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size); if (status) return status; - ext_rw->addr_lo = wr->wr.rdma.remote_addr; - ext_rw->addr_hi = upper_32_bits(wr->wr.rdma.remote_addr); - ext_rw->lrkey = wr->wr.rdma.rkey; + ext_rw->addr_lo = rdma_wr(wr)->remote_addr; + ext_rw->addr_hi = upper_32_bits(rdma_wr(wr)->remote_addr); + ext_rw->lrkey = rdma_wr(wr)->rkey; ext_rw->len = hdr->total_len; return 0; } @@ -2056,46 +2127,12 @@ static void ocrdma_build_read(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, hdr->cw |= (OCRDMA_READ << OCRDMA_WQE_OPCODE_SHIFT); hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); - ext_rw->addr_lo = wr->wr.rdma.remote_addr; - ext_rw->addr_hi = upper_32_bits(wr->wr.rdma.remote_addr); - ext_rw->lrkey = wr->wr.rdma.rkey; + ext_rw->addr_lo = rdma_wr(wr)->remote_addr; + ext_rw->addr_hi = upper_32_bits(rdma_wr(wr)->remote_addr); + ext_rw->lrkey = rdma_wr(wr)->rkey; ext_rw->len = hdr->total_len; } -static void build_frmr_pbes(struct ib_send_wr *wr, struct ocrdma_pbl *pbl_tbl, - struct ocrdma_hw_mr *hwmr) -{ - int i; - u64 buf_addr = 0; - int num_pbes; - struct ocrdma_pbe *pbe; - - pbe = (struct ocrdma_pbe *)pbl_tbl->va; - num_pbes = 0; - - /* go through the OS phy regions & fill hw pbe entries into pbls. */ - for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) { - /* number of pbes can be more for one OS buf, when - * buffers are of different sizes. - * split the ib_buf to one or more pbes. - */ - buf_addr = wr->wr.fast_reg.page_list->page_list[i]; - pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK)); - pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr)); - num_pbes += 1; - pbe++; - - /* if the pbl is full storing the pbes, - * move to next pbl. - */ - if (num_pbes == (hwmr->pbl_size/sizeof(u64))) { - pbl_tbl++; - pbe = (struct ocrdma_pbe *)pbl_tbl->va; - } - } - return; -} - static int get_encoded_page_size(int pg_sz) { /* Max size is 256M 4096 << 16 */ @@ -2106,48 +2143,59 @@ static int get_encoded_page_size(int pg_sz) return i; } - -static int ocrdma_build_fr(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, - struct ib_send_wr *wr) +static int ocrdma_build_reg(struct ocrdma_qp *qp, + struct ocrdma_hdr_wqe *hdr, + struct ib_reg_wr *wr) { u64 fbo; struct ocrdma_ewqe_fr *fast_reg = (struct ocrdma_ewqe_fr *)(hdr + 1); - struct ocrdma_mr *mr; - struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device); + struct ocrdma_mr *mr = get_ocrdma_mr(wr->mr); + struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table; + struct ocrdma_pbe *pbe; u32 wqe_size = sizeof(*fast_reg) + sizeof(*hdr); + int num_pbes = 0, i; wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES); - if (wr->wr.fast_reg.page_list_len > dev->attr.max_pages_per_frmr) - return -EINVAL; - hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT); hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); - if (wr->wr.fast_reg.page_list_len == 0) - BUG(); - if (wr->wr.fast_reg.access_flags & IB_ACCESS_LOCAL_WRITE) + if (wr->access & IB_ACCESS_LOCAL_WRITE) hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR; - if (wr->wr.fast_reg.access_flags & IB_ACCESS_REMOTE_WRITE) + if (wr->access & IB_ACCESS_REMOTE_WRITE) hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR; - if (wr->wr.fast_reg.access_flags & IB_ACCESS_REMOTE_READ) + if (wr->access & IB_ACCESS_REMOTE_READ) hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD; - hdr->lkey = wr->wr.fast_reg.rkey; - hdr->total_len = wr->wr.fast_reg.length; + hdr->lkey = wr->key; + hdr->total_len = mr->ibmr.length; - fbo = wr->wr.fast_reg.iova_start - - (wr->wr.fast_reg.page_list->page_list[0] & PAGE_MASK); + fbo = mr->ibmr.iova - mr->pages[0]; - fast_reg->va_hi = upper_32_bits(wr->wr.fast_reg.iova_start); - fast_reg->va_lo = (u32) (wr->wr.fast_reg.iova_start & 0xffffffff); + fast_reg->va_hi = upper_32_bits(mr->ibmr.iova); + fast_reg->va_lo = (u32) (mr->ibmr.iova & 0xffffffff); fast_reg->fbo_hi = upper_32_bits(fbo); fast_reg->fbo_lo = (u32) fbo & 0xffffffff; - fast_reg->num_sges = wr->wr.fast_reg.page_list_len; - fast_reg->size_sge = - get_encoded_page_size(1 << wr->wr.fast_reg.page_shift); - mr = (struct ocrdma_mr *) (unsigned long) - dev->stag_arr[(hdr->lkey >> 8) & (OCRDMA_MAX_STAG - 1)]; - build_frmr_pbes(wr, mr->hwmr.pbl_table, &mr->hwmr); + fast_reg->num_sges = mr->npages; + fast_reg->size_sge = get_encoded_page_size(mr->ibmr.page_size); + + pbe = pbl_tbl->va; + for (i = 0; i < mr->npages; i++) { + u64 buf_addr = mr->pages[i]; + + pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK)); + pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr)); + num_pbes += 1; + pbe++; + + /* if the pbl is full storing the pbes, + * move to next pbl. + */ + if (num_pbes == (mr->hwmr.pbl_size/sizeof(u64))) { + pbl_tbl++; + pbe = (struct ocrdma_pbe *)pbl_tbl->va; + } + } + return 0; } @@ -2230,8 +2278,8 @@ int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT; hdr->lkey = wr->ex.invalidate_rkey; break; - case IB_WR_FAST_REG_MR: - status = ocrdma_build_fr(qp, hdr, wr); + case IB_WR_REG_MR: + status = ocrdma_build_reg(qp, hdr, reg_wr(wr)); break; default: status = -EINVAL; @@ -2497,7 +2545,7 @@ static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc, ibwc->opcode = IB_WC_SEND; break; case OCRDMA_FR_MR: - ibwc->opcode = IB_WC_FAST_REG_MR; + ibwc->opcode = IB_WC_REG_MR; break; case OCRDMA_LKEY_INV: ibwc->opcode = IB_WC_LOCAL_INV; @@ -2863,16 +2911,11 @@ expand_cqe: } stop_cqe: cq->getp = cur_getp; - if (cq->deferred_arm) { - ocrdma_ring_cq_db(dev, cq->id, true, cq->deferred_sol, - polled_hw_cqes); + if (cq->deferred_arm || polled_hw_cqes) { + ocrdma_ring_cq_db(dev, cq->id, cq->deferred_arm, + cq->deferred_sol, polled_hw_cqes); cq->deferred_arm = false; cq->deferred_sol = false; - } else { - /* We need to pop the CQE. No need to arm */ - ocrdma_ring_cq_db(dev, cq->id, false, cq->deferred_sol, - polled_hw_cqes); - cq->deferred_sol = false; } return i; @@ -2969,21 +3012,32 @@ int ocrdma_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags cq_flags) return 0; } -struct ib_mr *ocrdma_alloc_frmr(struct ib_pd *ibpd, int max_page_list_len) +struct ib_mr *ocrdma_alloc_mr(struct ib_pd *ibpd, + enum ib_mr_type mr_type, + u32 max_num_sg) { int status; struct ocrdma_mr *mr; struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); - if (max_page_list_len > dev->attr.max_pages_per_frmr) + if (mr_type != IB_MR_TYPE_MEM_REG) + return ERR_PTR(-EINVAL); + + if (max_num_sg > dev->attr.max_pages_per_frmr) return ERR_PTR(-EINVAL); mr = kzalloc(sizeof(*mr), GFP_KERNEL); if (!mr) return ERR_PTR(-ENOMEM); - status = ocrdma_get_pbl_info(dev, mr, max_page_list_len); + mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL); + if (!mr->pages) { + status = -ENOMEM; + goto pl_err; + } + + status = ocrdma_get_pbl_info(dev, mr, max_num_sg); if (status) goto pbl_err; mr->hwmr.fr_mr = 1; @@ -3006,30 +3060,12 @@ struct ib_mr *ocrdma_alloc_frmr(struct ib_pd *ibpd, int max_page_list_len) mbx_err: ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); pbl_err: + kfree(mr->pages); +pl_err: kfree(mr); return ERR_PTR(-ENOMEM); } -struct ib_fast_reg_page_list *ocrdma_alloc_frmr_page_list(struct ib_device - *ibdev, - int page_list_len) -{ - struct ib_fast_reg_page_list *frmr_list; - int size; - - size = sizeof(*frmr_list) + (page_list_len * sizeof(u64)); - frmr_list = kzalloc(size, GFP_KERNEL); - if (!frmr_list) - return ERR_PTR(-ENOMEM); - frmr_list->page_list = (u64 *)(frmr_list + 1); - return frmr_list; -} - -void ocrdma_free_frmr_page_list(struct ib_fast_reg_page_list *page_list) -{ - kfree(page_list); -} - #define MAX_KERNEL_PBE_SIZE 65536 static inline int count_kernel_pbes(struct ib_phys_buf *buf_list, int buf_cnt, u32 *pbe_size) @@ -3192,3 +3228,26 @@ pbl_err: kfree(mr); return ERR_PTR(status); } + +static int ocrdma_set_page(struct ib_mr *ibmr, u64 addr) +{ + struct ocrdma_mr *mr = get_ocrdma_mr(ibmr); + + if (unlikely(mr->npages == mr->hwmr.num_pbes)) + return -ENOMEM; + + mr->pages[mr->npages++] = addr; + + return 0; +} + +int ocrdma_map_mr_sg(struct ib_mr *ibmr, + struct scatterlist *sg, + int sg_nents) +{ + struct ocrdma_mr *mr = get_ocrdma_mr(ibmr); + + mr->npages = 0; + + return ib_sg_to_pages(ibmr, sg, sg_nents, ocrdma_set_page); +} |