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![Bart Van Assche](/assets/img/avatar_default.png)
The SRP initiator allows to set max_sectors to a value that exceeds the largest amount of data that can be mapped at once with an mlx4 HCA using fast registration and a page size of 4 KB. Hence modify ib_map_mr_sg() such that it can map partial sg-elements. If an sg-element has been mapped partially, let the caller know which fraction has been mapped by adjusting *sg_offset. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Laurence Oberman <loberman@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
3092 lines
80 KiB
C
3092 lines
80 KiB
C
/* This file is part of the Emulex RoCE Device Driver for
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* RoCE (RDMA over Converged Ethernet) adapters.
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* Copyright (C) 2012-2015 Emulex. All rights reserved.
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* EMULEX and SLI are trademarks of Emulex.
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* www.emulex.com
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*
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* This software is available to you under a choice of one of two licenses.
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* You may choose to be licensed under the terms of the GNU General Public
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* License (GPL) Version 2, available from the file COPYING in the main
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* directory of this source tree, or the BSD license below:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Contact Information:
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* linux-drivers@emulex.com
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*
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* Emulex
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* 3333 Susan Street
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* Costa Mesa, CA 92626
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*/
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#include <linux/dma-mapping.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_user_verbs.h>
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#include <rdma/iw_cm.h>
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#include <rdma/ib_umem.h>
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#include <rdma/ib_addr.h>
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#include <rdma/ib_cache.h>
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#include "ocrdma.h"
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#include "ocrdma_hw.h"
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#include "ocrdma_verbs.h"
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#include "ocrdma_abi.h"
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int ocrdma_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
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{
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if (index > 1)
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return -EINVAL;
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*pkey = 0xffff;
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return 0;
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}
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int ocrdma_query_gid(struct ib_device *ibdev, u8 port,
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int index, union ib_gid *sgid)
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{
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int ret;
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struct ocrdma_dev *dev;
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dev = get_ocrdma_dev(ibdev);
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memset(sgid, 0, sizeof(*sgid));
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if (index >= OCRDMA_MAX_SGID)
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return -EINVAL;
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ret = ib_get_cached_gid(ibdev, port, index, sgid, NULL);
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if (ret == -EAGAIN) {
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memcpy(sgid, &zgid, sizeof(*sgid));
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return 0;
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}
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return ret;
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}
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int ocrdma_add_gid(struct ib_device *device,
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u8 port_num,
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unsigned int index,
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const union ib_gid *gid,
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const struct ib_gid_attr *attr,
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void **context) {
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return 0;
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}
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int ocrdma_del_gid(struct ib_device *device,
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u8 port_num,
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unsigned int index,
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void **context) {
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return 0;
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}
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int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr,
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struct ib_udata *uhw)
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{
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struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
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if (uhw->inlen || uhw->outlen)
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return -EINVAL;
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memset(attr, 0, sizeof *attr);
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memcpy(&attr->fw_ver, &dev->attr.fw_ver[0],
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min(sizeof(dev->attr.fw_ver), sizeof(attr->fw_ver)));
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ocrdma_get_guid(dev, (u8 *)&attr->sys_image_guid);
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attr->max_mr_size = dev->attr.max_mr_size;
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attr->page_size_cap = 0xffff000;
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attr->vendor_id = dev->nic_info.pdev->vendor;
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attr->vendor_part_id = dev->nic_info.pdev->device;
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attr->hw_ver = dev->asic_id;
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attr->max_qp = dev->attr.max_qp;
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attr->max_ah = OCRDMA_MAX_AH;
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attr->max_qp_wr = dev->attr.max_wqe;
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attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD |
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IB_DEVICE_RC_RNR_NAK_GEN |
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IB_DEVICE_SHUTDOWN_PORT |
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IB_DEVICE_SYS_IMAGE_GUID |
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IB_DEVICE_LOCAL_DMA_LKEY |
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IB_DEVICE_MEM_MGT_EXTENSIONS;
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attr->max_sge = dev->attr.max_send_sge;
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attr->max_sge_rd = attr->max_sge;
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attr->max_cq = dev->attr.max_cq;
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attr->max_cqe = dev->attr.max_cqe;
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attr->max_mr = dev->attr.max_mr;
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attr->max_mw = dev->attr.max_mw;
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attr->max_pd = dev->attr.max_pd;
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attr->atomic_cap = 0;
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attr->max_fmr = 0;
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attr->max_map_per_fmr = 0;
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attr->max_qp_rd_atom =
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min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp);
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attr->max_qp_init_rd_atom = dev->attr.max_ord_per_qp;
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attr->max_srq = dev->attr.max_srq;
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attr->max_srq_sge = dev->attr.max_srq_sge;
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attr->max_srq_wr = dev->attr.max_rqe;
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attr->local_ca_ack_delay = dev->attr.local_ca_ack_delay;
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attr->max_fast_reg_page_list_len = dev->attr.max_pages_per_frmr;
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attr->max_pkeys = 1;
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return 0;
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}
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struct net_device *ocrdma_get_netdev(struct ib_device *ibdev, u8 port_num)
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{
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struct ocrdma_dev *dev;
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struct net_device *ndev = NULL;
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rcu_read_lock();
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dev = get_ocrdma_dev(ibdev);
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if (dev)
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ndev = dev->nic_info.netdev;
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if (ndev)
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dev_hold(ndev);
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rcu_read_unlock();
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return ndev;
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}
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static inline void get_link_speed_and_width(struct ocrdma_dev *dev,
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u8 *ib_speed, u8 *ib_width)
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{
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int status;
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u8 speed;
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status = ocrdma_mbx_get_link_speed(dev, &speed, NULL);
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if (status)
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speed = OCRDMA_PHYS_LINK_SPEED_ZERO;
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switch (speed) {
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case OCRDMA_PHYS_LINK_SPEED_1GBPS:
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*ib_speed = IB_SPEED_SDR;
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*ib_width = IB_WIDTH_1X;
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break;
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case OCRDMA_PHYS_LINK_SPEED_10GBPS:
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*ib_speed = IB_SPEED_QDR;
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*ib_width = IB_WIDTH_1X;
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break;
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case OCRDMA_PHYS_LINK_SPEED_20GBPS:
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*ib_speed = IB_SPEED_DDR;
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*ib_width = IB_WIDTH_4X;
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break;
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case OCRDMA_PHYS_LINK_SPEED_40GBPS:
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*ib_speed = IB_SPEED_QDR;
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*ib_width = IB_WIDTH_4X;
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break;
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default:
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/* Unsupported */
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*ib_speed = IB_SPEED_SDR;
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*ib_width = IB_WIDTH_1X;
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}
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}
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int ocrdma_query_port(struct ib_device *ibdev,
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u8 port, struct ib_port_attr *props)
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{
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enum ib_port_state port_state;
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struct ocrdma_dev *dev;
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struct net_device *netdev;
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dev = get_ocrdma_dev(ibdev);
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if (port > 1) {
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pr_err("%s(%d) invalid_port=0x%x\n", __func__,
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dev->id, port);
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return -EINVAL;
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}
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netdev = dev->nic_info.netdev;
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if (netif_running(netdev) && netif_oper_up(netdev)) {
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port_state = IB_PORT_ACTIVE;
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props->phys_state = 5;
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} else {
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port_state = IB_PORT_DOWN;
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props->phys_state = 3;
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}
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props->max_mtu = IB_MTU_4096;
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props->active_mtu = iboe_get_mtu(netdev->mtu);
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props->lid = 0;
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props->lmc = 0;
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props->sm_lid = 0;
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props->sm_sl = 0;
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props->state = port_state;
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props->port_cap_flags =
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IB_PORT_CM_SUP |
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IB_PORT_REINIT_SUP |
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IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP |
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IB_PORT_IP_BASED_GIDS;
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props->gid_tbl_len = OCRDMA_MAX_SGID;
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props->pkey_tbl_len = 1;
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props->bad_pkey_cntr = 0;
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props->qkey_viol_cntr = 0;
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get_link_speed_and_width(dev, &props->active_speed,
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&props->active_width);
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props->max_msg_sz = 0x80000000;
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props->max_vl_num = 4;
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return 0;
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}
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int ocrdma_modify_port(struct ib_device *ibdev, u8 port, int mask,
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struct ib_port_modify *props)
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{
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struct ocrdma_dev *dev;
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dev = get_ocrdma_dev(ibdev);
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if (port > 1) {
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pr_err("%s(%d) invalid_port=0x%x\n", __func__, dev->id, port);
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return -EINVAL;
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}
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return 0;
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}
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static int ocrdma_add_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr,
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unsigned long len)
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{
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struct ocrdma_mm *mm;
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mm = kzalloc(sizeof(*mm), GFP_KERNEL);
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if (mm == NULL)
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return -ENOMEM;
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mm->key.phy_addr = phy_addr;
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mm->key.len = len;
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INIT_LIST_HEAD(&mm->entry);
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mutex_lock(&uctx->mm_list_lock);
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list_add_tail(&mm->entry, &uctx->mm_head);
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mutex_unlock(&uctx->mm_list_lock);
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return 0;
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}
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static void ocrdma_del_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr,
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unsigned long len)
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{
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struct ocrdma_mm *mm, *tmp;
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mutex_lock(&uctx->mm_list_lock);
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list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) {
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if (len != mm->key.len && phy_addr != mm->key.phy_addr)
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continue;
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list_del(&mm->entry);
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kfree(mm);
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break;
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}
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mutex_unlock(&uctx->mm_list_lock);
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}
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static bool ocrdma_search_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr,
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unsigned long len)
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{
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bool found = false;
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struct ocrdma_mm *mm;
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mutex_lock(&uctx->mm_list_lock);
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list_for_each_entry(mm, &uctx->mm_head, entry) {
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if (len != mm->key.len && phy_addr != mm->key.phy_addr)
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continue;
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found = true;
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break;
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}
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mutex_unlock(&uctx->mm_list_lock);
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return found;
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}
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static u16 _ocrdma_pd_mgr_get_bitmap(struct ocrdma_dev *dev, bool dpp_pool)
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{
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u16 pd_bitmap_idx = 0;
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const unsigned long *pd_bitmap;
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if (dpp_pool) {
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pd_bitmap = dev->pd_mgr->pd_dpp_bitmap;
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pd_bitmap_idx = find_first_zero_bit(pd_bitmap,
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dev->pd_mgr->max_dpp_pd);
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__set_bit(pd_bitmap_idx, dev->pd_mgr->pd_dpp_bitmap);
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dev->pd_mgr->pd_dpp_count++;
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if (dev->pd_mgr->pd_dpp_count > dev->pd_mgr->pd_dpp_thrsh)
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dev->pd_mgr->pd_dpp_thrsh = dev->pd_mgr->pd_dpp_count;
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} else {
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pd_bitmap = dev->pd_mgr->pd_norm_bitmap;
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pd_bitmap_idx = find_first_zero_bit(pd_bitmap,
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dev->pd_mgr->max_normal_pd);
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__set_bit(pd_bitmap_idx, dev->pd_mgr->pd_norm_bitmap);
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dev->pd_mgr->pd_norm_count++;
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if (dev->pd_mgr->pd_norm_count > dev->pd_mgr->pd_norm_thrsh)
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dev->pd_mgr->pd_norm_thrsh = dev->pd_mgr->pd_norm_count;
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}
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return pd_bitmap_idx;
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}
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static int _ocrdma_pd_mgr_put_bitmap(struct ocrdma_dev *dev, u16 pd_id,
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bool dpp_pool)
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{
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u16 pd_count;
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u16 pd_bit_index;
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pd_count = dpp_pool ? dev->pd_mgr->pd_dpp_count :
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dev->pd_mgr->pd_norm_count;
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if (pd_count == 0)
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return -EINVAL;
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if (dpp_pool) {
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pd_bit_index = pd_id - dev->pd_mgr->pd_dpp_start;
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if (pd_bit_index >= dev->pd_mgr->max_dpp_pd) {
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return -EINVAL;
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} else {
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__clear_bit(pd_bit_index, dev->pd_mgr->pd_dpp_bitmap);
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dev->pd_mgr->pd_dpp_count--;
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}
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} else {
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pd_bit_index = pd_id - dev->pd_mgr->pd_norm_start;
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if (pd_bit_index >= dev->pd_mgr->max_normal_pd) {
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return -EINVAL;
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} else {
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__clear_bit(pd_bit_index, dev->pd_mgr->pd_norm_bitmap);
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dev->pd_mgr->pd_norm_count--;
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}
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}
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return 0;
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}
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static u8 ocrdma_put_pd_num(struct ocrdma_dev *dev, u16 pd_id,
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bool dpp_pool)
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{
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int status;
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mutex_lock(&dev->dev_lock);
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status = _ocrdma_pd_mgr_put_bitmap(dev, pd_id, dpp_pool);
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mutex_unlock(&dev->dev_lock);
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return status;
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}
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static int ocrdma_get_pd_num(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
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{
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u16 pd_idx = 0;
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int status = 0;
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|
|
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mutex_lock(&dev->dev_lock);
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if (pd->dpp_enabled) {
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/* try allocating DPP PD, if not available then normal PD */
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if (dev->pd_mgr->pd_dpp_count < dev->pd_mgr->max_dpp_pd) {
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pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, true);
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pd->id = dev->pd_mgr->pd_dpp_start + pd_idx;
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pd->dpp_page = dev->pd_mgr->dpp_page_index + pd_idx;
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} else if (dev->pd_mgr->pd_norm_count <
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dev->pd_mgr->max_normal_pd) {
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pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, false);
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pd->id = dev->pd_mgr->pd_norm_start + pd_idx;
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pd->dpp_enabled = false;
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} else {
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status = -EINVAL;
|
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}
|
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} else {
|
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if (dev->pd_mgr->pd_norm_count < dev->pd_mgr->max_normal_pd) {
|
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pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, false);
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pd->id = dev->pd_mgr->pd_norm_start + pd_idx;
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} else {
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status = -EINVAL;
|
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}
|
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}
|
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mutex_unlock(&dev->dev_lock);
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return status;
|
|
}
|
|
|
|
static struct ocrdma_pd *_ocrdma_alloc_pd(struct ocrdma_dev *dev,
|
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struct ocrdma_ucontext *uctx,
|
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struct ib_udata *udata)
|
|
{
|
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struct ocrdma_pd *pd = NULL;
|
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int status;
|
|
|
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pd = kzalloc(sizeof(*pd), GFP_KERNEL);
|
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if (!pd)
|
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return ERR_PTR(-ENOMEM);
|
|
|
|
if (udata && uctx && dev->attr.max_dpp_pds) {
|
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pd->dpp_enabled =
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ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R;
|
|
pd->num_dpp_qp =
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pd->dpp_enabled ? (dev->nic_info.db_page_size /
|
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dev->attr.wqe_size) : 0;
|
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}
|
|
|
|
if (dev->pd_mgr->pd_prealloc_valid) {
|
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status = ocrdma_get_pd_num(dev, pd);
|
|
if (status == 0) {
|
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return pd;
|
|
} else {
|
|
kfree(pd);
|
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return ERR_PTR(status);
|
|
}
|
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}
|
|
|
|
retry:
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status = ocrdma_mbx_alloc_pd(dev, pd);
|
|
if (status) {
|
|
if (pd->dpp_enabled) {
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pd->dpp_enabled = false;
|
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pd->num_dpp_qp = 0;
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goto retry;
|
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} else {
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|
kfree(pd);
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|
return ERR_PTR(status);
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}
|
|
}
|
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|
|
return pd;
|
|
}
|
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|
|
static inline int is_ucontext_pd(struct ocrdma_ucontext *uctx,
|
|
struct ocrdma_pd *pd)
|
|
{
|
|
return (uctx->cntxt_pd == pd ? true : false);
|
|
}
|
|
|
|
static int _ocrdma_dealloc_pd(struct ocrdma_dev *dev,
|
|
struct ocrdma_pd *pd)
|
|
{
|
|
int status;
|
|
|
|
if (dev->pd_mgr->pd_prealloc_valid)
|
|
status = ocrdma_put_pd_num(dev, pd->id, pd->dpp_enabled);
|
|
else
|
|
status = ocrdma_mbx_dealloc_pd(dev, pd);
|
|
|
|
kfree(pd);
|
|
return status;
|
|
}
|
|
|
|
static int ocrdma_alloc_ucontext_pd(struct ocrdma_dev *dev,
|
|
struct ocrdma_ucontext *uctx,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status = 0;
|
|
|
|
uctx->cntxt_pd = _ocrdma_alloc_pd(dev, uctx, udata);
|
|
if (IS_ERR(uctx->cntxt_pd)) {
|
|
status = PTR_ERR(uctx->cntxt_pd);
|
|
uctx->cntxt_pd = NULL;
|
|
goto err;
|
|
}
|
|
|
|
uctx->cntxt_pd->uctx = uctx;
|
|
uctx->cntxt_pd->ibpd.device = &dev->ibdev;
|
|
err:
|
|
return status;
|
|
}
|
|
|
|
static int ocrdma_dealloc_ucontext_pd(struct ocrdma_ucontext *uctx)
|
|
{
|
|
struct ocrdma_pd *pd = uctx->cntxt_pd;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
|
|
|
|
if (uctx->pd_in_use) {
|
|
pr_err("%s(%d) Freeing in use pdid=0x%x.\n",
|
|
__func__, dev->id, pd->id);
|
|
}
|
|
uctx->cntxt_pd = NULL;
|
|
(void)_ocrdma_dealloc_pd(dev, pd);
|
|
return 0;
|
|
}
|
|
|
|
static struct ocrdma_pd *ocrdma_get_ucontext_pd(struct ocrdma_ucontext *uctx)
|
|
{
|
|
struct ocrdma_pd *pd = NULL;
|
|
|
|
mutex_lock(&uctx->mm_list_lock);
|
|
if (!uctx->pd_in_use) {
|
|
uctx->pd_in_use = true;
|
|
pd = uctx->cntxt_pd;
|
|
}
|
|
mutex_unlock(&uctx->mm_list_lock);
|
|
|
|
return pd;
|
|
}
|
|
|
|
static void ocrdma_release_ucontext_pd(struct ocrdma_ucontext *uctx)
|
|
{
|
|
mutex_lock(&uctx->mm_list_lock);
|
|
uctx->pd_in_use = false;
|
|
mutex_unlock(&uctx->mm_list_lock);
|
|
}
|
|
|
|
struct ib_ucontext *ocrdma_alloc_ucontext(struct ib_device *ibdev,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status;
|
|
struct ocrdma_ucontext *ctx;
|
|
struct ocrdma_alloc_ucontext_resp resp;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
|
|
struct pci_dev *pdev = dev->nic_info.pdev;
|
|
u32 map_len = roundup(sizeof(u32) * 2048, PAGE_SIZE);
|
|
|
|
if (!udata)
|
|
return ERR_PTR(-EFAULT);
|
|
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
|
|
if (!ctx)
|
|
return ERR_PTR(-ENOMEM);
|
|
INIT_LIST_HEAD(&ctx->mm_head);
|
|
mutex_init(&ctx->mm_list_lock);
|
|
|
|
ctx->ah_tbl.va = dma_alloc_coherent(&pdev->dev, map_len,
|
|
&ctx->ah_tbl.pa, GFP_KERNEL);
|
|
if (!ctx->ah_tbl.va) {
|
|
kfree(ctx);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
memset(ctx->ah_tbl.va, 0, map_len);
|
|
ctx->ah_tbl.len = map_len;
|
|
|
|
memset(&resp, 0, sizeof(resp));
|
|
resp.ah_tbl_len = ctx->ah_tbl.len;
|
|
resp.ah_tbl_page = virt_to_phys(ctx->ah_tbl.va);
|
|
|
|
status = ocrdma_add_mmap(ctx, resp.ah_tbl_page, resp.ah_tbl_len);
|
|
if (status)
|
|
goto map_err;
|
|
|
|
status = ocrdma_alloc_ucontext_pd(dev, ctx, udata);
|
|
if (status)
|
|
goto pd_err;
|
|
|
|
resp.dev_id = dev->id;
|
|
resp.max_inline_data = dev->attr.max_inline_data;
|
|
resp.wqe_size = dev->attr.wqe_size;
|
|
resp.rqe_size = dev->attr.rqe_size;
|
|
resp.dpp_wqe_size = dev->attr.wqe_size;
|
|
|
|
memcpy(resp.fw_ver, dev->attr.fw_ver, sizeof(resp.fw_ver));
|
|
status = ib_copy_to_udata(udata, &resp, sizeof(resp));
|
|
if (status)
|
|
goto cpy_err;
|
|
return &ctx->ibucontext;
|
|
|
|
cpy_err:
|
|
pd_err:
|
|
ocrdma_del_mmap(ctx, ctx->ah_tbl.pa, ctx->ah_tbl.len);
|
|
map_err:
|
|
dma_free_coherent(&pdev->dev, ctx->ah_tbl.len, ctx->ah_tbl.va,
|
|
ctx->ah_tbl.pa);
|
|
kfree(ctx);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int ocrdma_dealloc_ucontext(struct ib_ucontext *ibctx)
|
|
{
|
|
int status;
|
|
struct ocrdma_mm *mm, *tmp;
|
|
struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ibctx);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibctx->device);
|
|
struct pci_dev *pdev = dev->nic_info.pdev;
|
|
|
|
status = ocrdma_dealloc_ucontext_pd(uctx);
|
|
|
|
ocrdma_del_mmap(uctx, uctx->ah_tbl.pa, uctx->ah_tbl.len);
|
|
dma_free_coherent(&pdev->dev, uctx->ah_tbl.len, uctx->ah_tbl.va,
|
|
uctx->ah_tbl.pa);
|
|
|
|
list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) {
|
|
list_del(&mm->entry);
|
|
kfree(mm);
|
|
}
|
|
kfree(uctx);
|
|
return status;
|
|
}
|
|
|
|
int ocrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
|
|
{
|
|
struct ocrdma_ucontext *ucontext = get_ocrdma_ucontext(context);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(context->device);
|
|
unsigned long vm_page = vma->vm_pgoff << PAGE_SHIFT;
|
|
u64 unmapped_db = (u64) dev->nic_info.unmapped_db;
|
|
unsigned long len = (vma->vm_end - vma->vm_start);
|
|
int status;
|
|
bool found;
|
|
|
|
if (vma->vm_start & (PAGE_SIZE - 1))
|
|
return -EINVAL;
|
|
found = ocrdma_search_mmap(ucontext, vma->vm_pgoff << PAGE_SHIFT, len);
|
|
if (!found)
|
|
return -EINVAL;
|
|
|
|
if ((vm_page >= unmapped_db) && (vm_page <= (unmapped_db +
|
|
dev->nic_info.db_total_size)) &&
|
|
(len <= dev->nic_info.db_page_size)) {
|
|
if (vma->vm_flags & VM_READ)
|
|
return -EPERM;
|
|
|
|
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
|
status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
|
|
len, vma->vm_page_prot);
|
|
} else if (dev->nic_info.dpp_unmapped_len &&
|
|
(vm_page >= (u64) dev->nic_info.dpp_unmapped_addr) &&
|
|
(vm_page <= (u64) (dev->nic_info.dpp_unmapped_addr +
|
|
dev->nic_info.dpp_unmapped_len)) &&
|
|
(len <= dev->nic_info.dpp_unmapped_len)) {
|
|
if (vma->vm_flags & VM_READ)
|
|
return -EPERM;
|
|
|
|
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
|
|
status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
|
|
len, vma->vm_page_prot);
|
|
} else {
|
|
status = remap_pfn_range(vma, vma->vm_start,
|
|
vma->vm_pgoff, len, vma->vm_page_prot);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static int ocrdma_copy_pd_uresp(struct ocrdma_dev *dev, struct ocrdma_pd *pd,
|
|
struct ib_ucontext *ib_ctx,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status;
|
|
u64 db_page_addr;
|
|
u64 dpp_page_addr = 0;
|
|
u32 db_page_size;
|
|
struct ocrdma_alloc_pd_uresp rsp;
|
|
struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx);
|
|
|
|
memset(&rsp, 0, sizeof(rsp));
|
|
rsp.id = pd->id;
|
|
rsp.dpp_enabled = pd->dpp_enabled;
|
|
db_page_addr = ocrdma_get_db_addr(dev, pd->id);
|
|
db_page_size = dev->nic_info.db_page_size;
|
|
|
|
status = ocrdma_add_mmap(uctx, db_page_addr, db_page_size);
|
|
if (status)
|
|
return status;
|
|
|
|
if (pd->dpp_enabled) {
|
|
dpp_page_addr = dev->nic_info.dpp_unmapped_addr +
|
|
(pd->id * PAGE_SIZE);
|
|
status = ocrdma_add_mmap(uctx, dpp_page_addr,
|
|
PAGE_SIZE);
|
|
if (status)
|
|
goto dpp_map_err;
|
|
rsp.dpp_page_addr_hi = upper_32_bits(dpp_page_addr);
|
|
rsp.dpp_page_addr_lo = dpp_page_addr;
|
|
}
|
|
|
|
status = ib_copy_to_udata(udata, &rsp, sizeof(rsp));
|
|
if (status)
|
|
goto ucopy_err;
|
|
|
|
pd->uctx = uctx;
|
|
return 0;
|
|
|
|
ucopy_err:
|
|
if (pd->dpp_enabled)
|
|
ocrdma_del_mmap(pd->uctx, dpp_page_addr, PAGE_SIZE);
|
|
dpp_map_err:
|
|
ocrdma_del_mmap(pd->uctx, db_page_addr, db_page_size);
|
|
return status;
|
|
}
|
|
|
|
struct ib_pd *ocrdma_alloc_pd(struct ib_device *ibdev,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
|
|
struct ocrdma_pd *pd;
|
|
struct ocrdma_ucontext *uctx = NULL;
|
|
int status;
|
|
u8 is_uctx_pd = false;
|
|
|
|
if (udata && context) {
|
|
uctx = get_ocrdma_ucontext(context);
|
|
pd = ocrdma_get_ucontext_pd(uctx);
|
|
if (pd) {
|
|
is_uctx_pd = true;
|
|
goto pd_mapping;
|
|
}
|
|
}
|
|
|
|
pd = _ocrdma_alloc_pd(dev, uctx, udata);
|
|
if (IS_ERR(pd)) {
|
|
status = PTR_ERR(pd);
|
|
goto exit;
|
|
}
|
|
|
|
pd_mapping:
|
|
if (udata && context) {
|
|
status = ocrdma_copy_pd_uresp(dev, pd, context, udata);
|
|
if (status)
|
|
goto err;
|
|
}
|
|
return &pd->ibpd;
|
|
|
|
err:
|
|
if (is_uctx_pd) {
|
|
ocrdma_release_ucontext_pd(uctx);
|
|
} else {
|
|
status = _ocrdma_dealloc_pd(dev, pd);
|
|
}
|
|
exit:
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int ocrdma_dealloc_pd(struct ib_pd *ibpd)
|
|
{
|
|
struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
|
|
struct ocrdma_ucontext *uctx = NULL;
|
|
int status = 0;
|
|
u64 usr_db;
|
|
|
|
uctx = pd->uctx;
|
|
if (uctx) {
|
|
u64 dpp_db = dev->nic_info.dpp_unmapped_addr +
|
|
(pd->id * PAGE_SIZE);
|
|
if (pd->dpp_enabled)
|
|
ocrdma_del_mmap(pd->uctx, dpp_db, PAGE_SIZE);
|
|
usr_db = ocrdma_get_db_addr(dev, pd->id);
|
|
ocrdma_del_mmap(pd->uctx, usr_db, dev->nic_info.db_page_size);
|
|
|
|
if (is_ucontext_pd(uctx, pd)) {
|
|
ocrdma_release_ucontext_pd(uctx);
|
|
return status;
|
|
}
|
|
}
|
|
status = _ocrdma_dealloc_pd(dev, pd);
|
|
return status;
|
|
}
|
|
|
|
static int ocrdma_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_mr *mr,
|
|
u32 pdid, int acc, u32 num_pbls, u32 addr_check)
|
|
{
|
|
int status;
|
|
|
|
mr->hwmr.fr_mr = 0;
|
|
mr->hwmr.local_rd = 1;
|
|
mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
|
|
mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
|
|
mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
|
|
mr->hwmr.mw_bind = (acc & IB_ACCESS_MW_BIND) ? 1 : 0;
|
|
mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
|
|
mr->hwmr.num_pbls = num_pbls;
|
|
|
|
status = ocrdma_mbx_alloc_lkey(dev, &mr->hwmr, pdid, addr_check);
|
|
if (status)
|
|
return status;
|
|
|
|
mr->ibmr.lkey = mr->hwmr.lkey;
|
|
if (mr->hwmr.remote_wr || mr->hwmr.remote_rd)
|
|
mr->ibmr.rkey = mr->hwmr.lkey;
|
|
return 0;
|
|
}
|
|
|
|
struct ib_mr *ocrdma_get_dma_mr(struct ib_pd *ibpd, int acc)
|
|
{
|
|
int status;
|
|
struct ocrdma_mr *mr;
|
|
struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
|
|
|
|
if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) {
|
|
pr_err("%s err, invalid access rights\n", __func__);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
mr = kzalloc(sizeof(*mr), GFP_KERNEL);
|
|
if (!mr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
status = ocrdma_alloc_lkey(dev, mr, pd->id, acc, 0,
|
|
OCRDMA_ADDR_CHECK_DISABLE);
|
|
if (status) {
|
|
kfree(mr);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
return &mr->ibmr;
|
|
}
|
|
|
|
static void ocrdma_free_mr_pbl_tbl(struct ocrdma_dev *dev,
|
|
struct ocrdma_hw_mr *mr)
|
|
{
|
|
struct pci_dev *pdev = dev->nic_info.pdev;
|
|
int i = 0;
|
|
|
|
if (mr->pbl_table) {
|
|
for (i = 0; i < mr->num_pbls; i++) {
|
|
if (!mr->pbl_table[i].va)
|
|
continue;
|
|
dma_free_coherent(&pdev->dev, mr->pbl_size,
|
|
mr->pbl_table[i].va,
|
|
mr->pbl_table[i].pa);
|
|
}
|
|
kfree(mr->pbl_table);
|
|
mr->pbl_table = NULL;
|
|
}
|
|
}
|
|
|
|
static int ocrdma_get_pbl_info(struct ocrdma_dev *dev, struct ocrdma_mr *mr,
|
|
u32 num_pbes)
|
|
{
|
|
u32 num_pbls = 0;
|
|
u32 idx = 0;
|
|
int status = 0;
|
|
u32 pbl_size;
|
|
|
|
do {
|
|
pbl_size = OCRDMA_MIN_HPAGE_SIZE * (1 << idx);
|
|
if (pbl_size > MAX_OCRDMA_PBL_SIZE) {
|
|
status = -EFAULT;
|
|
break;
|
|
}
|
|
num_pbls = roundup(num_pbes, (pbl_size / sizeof(u64)));
|
|
num_pbls = num_pbls / (pbl_size / sizeof(u64));
|
|
idx++;
|
|
} while (num_pbls >= dev->attr.max_num_mr_pbl);
|
|
|
|
mr->hwmr.num_pbes = num_pbes;
|
|
mr->hwmr.num_pbls = num_pbls;
|
|
mr->hwmr.pbl_size = pbl_size;
|
|
return status;
|
|
}
|
|
|
|
static int ocrdma_build_pbl_tbl(struct ocrdma_dev *dev, struct ocrdma_hw_mr *mr)
|
|
{
|
|
int status = 0;
|
|
int i;
|
|
u32 dma_len = mr->pbl_size;
|
|
struct pci_dev *pdev = dev->nic_info.pdev;
|
|
void *va;
|
|
dma_addr_t pa;
|
|
|
|
mr->pbl_table = kzalloc(sizeof(struct ocrdma_pbl) *
|
|
mr->num_pbls, GFP_KERNEL);
|
|
|
|
if (!mr->pbl_table)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < mr->num_pbls; i++) {
|
|
va = dma_alloc_coherent(&pdev->dev, dma_len, &pa, GFP_KERNEL);
|
|
if (!va) {
|
|
ocrdma_free_mr_pbl_tbl(dev, mr);
|
|
status = -ENOMEM;
|
|
break;
|
|
}
|
|
memset(va, 0, dma_len);
|
|
mr->pbl_table[i].va = va;
|
|
mr->pbl_table[i].pa = pa;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static void build_user_pbes(struct ocrdma_dev *dev, struct ocrdma_mr *mr,
|
|
u32 num_pbes)
|
|
{
|
|
struct ocrdma_pbe *pbe;
|
|
struct scatterlist *sg;
|
|
struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table;
|
|
struct ib_umem *umem = mr->umem;
|
|
int shift, pg_cnt, pages, pbe_cnt, entry, total_num_pbes = 0;
|
|
|
|
if (!mr->hwmr.num_pbes)
|
|
return;
|
|
|
|
pbe = (struct ocrdma_pbe *)pbl_tbl->va;
|
|
pbe_cnt = 0;
|
|
|
|
shift = ilog2(umem->page_size);
|
|
|
|
for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
|
|
pages = sg_dma_len(sg) >> shift;
|
|
for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) {
|
|
/* store the page address in pbe */
|
|
pbe->pa_lo =
|
|
cpu_to_le32(sg_dma_address
|
|
(sg) +
|
|
(umem->page_size * pg_cnt));
|
|
pbe->pa_hi =
|
|
cpu_to_le32(upper_32_bits
|
|
((sg_dma_address
|
|
(sg) +
|
|
umem->page_size * pg_cnt)));
|
|
pbe_cnt += 1;
|
|
total_num_pbes += 1;
|
|
pbe++;
|
|
|
|
/* if done building pbes, issue the mbx cmd. */
|
|
if (total_num_pbes == num_pbes)
|
|
return;
|
|
|
|
/* if the given pbl is full storing the pbes,
|
|
* move to next pbl.
|
|
*/
|
|
if (pbe_cnt ==
|
|
(mr->hwmr.pbl_size / sizeof(u64))) {
|
|
pbl_tbl++;
|
|
pbe = (struct ocrdma_pbe *)pbl_tbl->va;
|
|
pbe_cnt = 0;
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
|
|
u64 usr_addr, int acc, struct ib_udata *udata)
|
|
{
|
|
int status = -ENOMEM;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
|
|
struct ocrdma_mr *mr;
|
|
struct ocrdma_pd *pd;
|
|
u32 num_pbes;
|
|
|
|
pd = get_ocrdma_pd(ibpd);
|
|
|
|
if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
mr = kzalloc(sizeof(*mr), GFP_KERNEL);
|
|
if (!mr)
|
|
return ERR_PTR(status);
|
|
mr->umem = ib_umem_get(ibpd->uobject->context, start, len, acc, 0);
|
|
if (IS_ERR(mr->umem)) {
|
|
status = -EFAULT;
|
|
goto umem_err;
|
|
}
|
|
num_pbes = ib_umem_page_count(mr->umem);
|
|
status = ocrdma_get_pbl_info(dev, mr, num_pbes);
|
|
if (status)
|
|
goto umem_err;
|
|
|
|
mr->hwmr.pbe_size = mr->umem->page_size;
|
|
mr->hwmr.fbo = ib_umem_offset(mr->umem);
|
|
mr->hwmr.va = usr_addr;
|
|
mr->hwmr.len = len;
|
|
mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
|
|
mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
|
|
mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
|
|
mr->hwmr.local_rd = 1;
|
|
mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
|
|
status = ocrdma_build_pbl_tbl(dev, &mr->hwmr);
|
|
if (status)
|
|
goto umem_err;
|
|
build_user_pbes(dev, mr, num_pbes);
|
|
status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, acc);
|
|
if (status)
|
|
goto mbx_err;
|
|
mr->ibmr.lkey = mr->hwmr.lkey;
|
|
if (mr->hwmr.remote_wr || mr->hwmr.remote_rd)
|
|
mr->ibmr.rkey = mr->hwmr.lkey;
|
|
|
|
return &mr->ibmr;
|
|
|
|
mbx_err:
|
|
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
|
|
umem_err:
|
|
kfree(mr);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int ocrdma_dereg_mr(struct ib_mr *ib_mr)
|
|
{
|
|
struct ocrdma_mr *mr = get_ocrdma_mr(ib_mr);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ib_mr->device);
|
|
|
|
(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. */
|
|
if (mr->umem)
|
|
ib_umem_release(mr->umem);
|
|
kfree(mr);
|
|
|
|
/* Don't stop cleanup, in case FW is unresponsive */
|
|
if (dev->mqe_ctx.fw_error_state) {
|
|
pr_err("%s(%d) fw not responding.\n",
|
|
__func__, dev->id);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ocrdma_copy_cq_uresp(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
|
|
struct ib_udata *udata,
|
|
struct ib_ucontext *ib_ctx)
|
|
{
|
|
int status;
|
|
struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx);
|
|
struct ocrdma_create_cq_uresp uresp;
|
|
|
|
memset(&uresp, 0, sizeof(uresp));
|
|
uresp.cq_id = cq->id;
|
|
uresp.page_size = PAGE_ALIGN(cq->len);
|
|
uresp.num_pages = 1;
|
|
uresp.max_hw_cqe = cq->max_hw_cqe;
|
|
uresp.page_addr[0] = virt_to_phys(cq->va);
|
|
uresp.db_page_addr = ocrdma_get_db_addr(dev, uctx->cntxt_pd->id);
|
|
uresp.db_page_size = dev->nic_info.db_page_size;
|
|
uresp.phase_change = cq->phase_change ? 1 : 0;
|
|
status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
|
|
if (status) {
|
|
pr_err("%s(%d) copy error cqid=0x%x.\n",
|
|
__func__, dev->id, cq->id);
|
|
goto err;
|
|
}
|
|
status = ocrdma_add_mmap(uctx, uresp.db_page_addr, uresp.db_page_size);
|
|
if (status)
|
|
goto err;
|
|
status = ocrdma_add_mmap(uctx, uresp.page_addr[0], uresp.page_size);
|
|
if (status) {
|
|
ocrdma_del_mmap(uctx, uresp.db_page_addr, uresp.db_page_size);
|
|
goto err;
|
|
}
|
|
cq->ucontext = uctx;
|
|
err:
|
|
return status;
|
|
}
|
|
|
|
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;
|
|
u16 pd_id = 0;
|
|
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);
|
|
} else
|
|
ureq.dpp_cq = 0;
|
|
cq = kzalloc(sizeof(*cq), GFP_KERNEL);
|
|
if (!cq)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
spin_lock_init(&cq->cq_lock);
|
|
spin_lock_init(&cq->comp_handler_lock);
|
|
INIT_LIST_HEAD(&cq->sq_head);
|
|
INIT_LIST_HEAD(&cq->rq_head);
|
|
|
|
if (ib_ctx) {
|
|
uctx = get_ocrdma_ucontext(ib_ctx);
|
|
pd_id = uctx->cntxt_pd->id;
|
|
}
|
|
|
|
status = ocrdma_mbx_create_cq(dev, cq, entries, ureq.dpp_cq, pd_id);
|
|
if (status) {
|
|
kfree(cq);
|
|
return ERR_PTR(status);
|
|
}
|
|
if (ib_ctx) {
|
|
status = ocrdma_copy_cq_uresp(dev, cq, udata, ib_ctx);
|
|
if (status)
|
|
goto ctx_err;
|
|
}
|
|
cq->phase = OCRDMA_CQE_VALID;
|
|
dev->cq_tbl[cq->id] = cq;
|
|
return &cq->ibcq;
|
|
|
|
ctx_err:
|
|
ocrdma_mbx_destroy_cq(dev, cq);
|
|
kfree(cq);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int ocrdma_resize_cq(struct ib_cq *ibcq, int new_cnt,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status = 0;
|
|
struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
|
|
|
|
if (new_cnt < 1 || new_cnt > cq->max_hw_cqe) {
|
|
status = -EINVAL;
|
|
return status;
|
|
}
|
|
ibcq->cqe = new_cnt;
|
|
return status;
|
|
}
|
|
|
|
static void ocrdma_flush_cq(struct ocrdma_cq *cq)
|
|
{
|
|
int cqe_cnt;
|
|
int valid_count = 0;
|
|
unsigned long flags;
|
|
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device);
|
|
struct ocrdma_cqe *cqe = NULL;
|
|
|
|
cqe = cq->va;
|
|
cqe_cnt = cq->cqe_cnt;
|
|
|
|
/* Last irq might have scheduled a polling thread
|
|
* sync-up with it before hard flushing.
|
|
*/
|
|
spin_lock_irqsave(&cq->cq_lock, flags);
|
|
while (cqe_cnt) {
|
|
if (is_cqe_valid(cq, cqe))
|
|
valid_count++;
|
|
cqe++;
|
|
cqe_cnt--;
|
|
}
|
|
ocrdma_ring_cq_db(dev, cq->id, false, false, valid_count);
|
|
spin_unlock_irqrestore(&cq->cq_lock, flags);
|
|
}
|
|
|
|
int ocrdma_destroy_cq(struct ib_cq *ibcq)
|
|
{
|
|
struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
|
|
struct ocrdma_eq *eq = NULL;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device);
|
|
int pdid = 0;
|
|
u32 irq, indx;
|
|
|
|
dev->cq_tbl[cq->id] = NULL;
|
|
indx = ocrdma_get_eq_table_index(dev, cq->eqn);
|
|
if (indx == -EINVAL)
|
|
BUG();
|
|
|
|
eq = &dev->eq_tbl[indx];
|
|
irq = ocrdma_get_irq(dev, eq);
|
|
synchronize_irq(irq);
|
|
ocrdma_flush_cq(cq);
|
|
|
|
(void)ocrdma_mbx_destroy_cq(dev, cq);
|
|
if (cq->ucontext) {
|
|
pdid = cq->ucontext->cntxt_pd->id;
|
|
ocrdma_del_mmap(cq->ucontext, (u64) cq->pa,
|
|
PAGE_ALIGN(cq->len));
|
|
ocrdma_del_mmap(cq->ucontext,
|
|
ocrdma_get_db_addr(dev, pdid),
|
|
dev->nic_info.db_page_size);
|
|
}
|
|
|
|
kfree(cq);
|
|
return 0;
|
|
}
|
|
|
|
static int ocrdma_add_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
|
|
{
|
|
int status = -EINVAL;
|
|
|
|
if (qp->id < OCRDMA_MAX_QP && dev->qp_tbl[qp->id] == NULL) {
|
|
dev->qp_tbl[qp->id] = qp;
|
|
status = 0;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static void ocrdma_del_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
|
|
{
|
|
dev->qp_tbl[qp->id] = NULL;
|
|
}
|
|
|
|
static int ocrdma_check_qp_params(struct ib_pd *ibpd, struct ocrdma_dev *dev,
|
|
struct ib_qp_init_attr *attrs)
|
|
{
|
|
if ((attrs->qp_type != IB_QPT_GSI) &&
|
|
(attrs->qp_type != IB_QPT_RC) &&
|
|
(attrs->qp_type != IB_QPT_UC) &&
|
|
(attrs->qp_type != IB_QPT_UD)) {
|
|
pr_err("%s(%d) unsupported qp type=0x%x requested\n",
|
|
__func__, dev->id, attrs->qp_type);
|
|
return -EINVAL;
|
|
}
|
|
/* Skip the check for QP1 to support CM size of 128 */
|
|
if ((attrs->qp_type != IB_QPT_GSI) &&
|
|
(attrs->cap.max_send_wr > dev->attr.max_wqe)) {
|
|
pr_err("%s(%d) unsupported send_wr=0x%x requested\n",
|
|
__func__, dev->id, attrs->cap.max_send_wr);
|
|
pr_err("%s(%d) supported send_wr=0x%x\n",
|
|
__func__, dev->id, dev->attr.max_wqe);
|
|
return -EINVAL;
|
|
}
|
|
if (!attrs->srq && (attrs->cap.max_recv_wr > dev->attr.max_rqe)) {
|
|
pr_err("%s(%d) unsupported recv_wr=0x%x requested\n",
|
|
__func__, dev->id, attrs->cap.max_recv_wr);
|
|
pr_err("%s(%d) supported recv_wr=0x%x\n",
|
|
__func__, dev->id, dev->attr.max_rqe);
|
|
return -EINVAL;
|
|
}
|
|
if (attrs->cap.max_inline_data > dev->attr.max_inline_data) {
|
|
pr_err("%s(%d) unsupported inline data size=0x%x requested\n",
|
|
__func__, dev->id, attrs->cap.max_inline_data);
|
|
pr_err("%s(%d) supported inline data size=0x%x\n",
|
|
__func__, dev->id, dev->attr.max_inline_data);
|
|
return -EINVAL;
|
|
}
|
|
if (attrs->cap.max_send_sge > dev->attr.max_send_sge) {
|
|
pr_err("%s(%d) unsupported send_sge=0x%x requested\n",
|
|
__func__, dev->id, attrs->cap.max_send_sge);
|
|
pr_err("%s(%d) supported send_sge=0x%x\n",
|
|
__func__, dev->id, dev->attr.max_send_sge);
|
|
return -EINVAL;
|
|
}
|
|
if (attrs->cap.max_recv_sge > dev->attr.max_recv_sge) {
|
|
pr_err("%s(%d) unsupported recv_sge=0x%x requested\n",
|
|
__func__, dev->id, attrs->cap.max_recv_sge);
|
|
pr_err("%s(%d) supported recv_sge=0x%x\n",
|
|
__func__, dev->id, dev->attr.max_recv_sge);
|
|
return -EINVAL;
|
|
}
|
|
/* unprivileged user space cannot create special QP */
|
|
if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) {
|
|
pr_err
|
|
("%s(%d) Userspace can't create special QPs of type=0x%x\n",
|
|
__func__, dev->id, attrs->qp_type);
|
|
return -EINVAL;
|
|
}
|
|
/* allow creating only one GSI type of QP */
|
|
if (attrs->qp_type == IB_QPT_GSI && dev->gsi_qp_created) {
|
|
pr_err("%s(%d) GSI special QPs already created.\n",
|
|
__func__, dev->id);
|
|
return -EINVAL;
|
|
}
|
|
/* verify consumer QPs are not trying to use GSI QP's CQ */
|
|
if ((attrs->qp_type != IB_QPT_GSI) && (dev->gsi_qp_created)) {
|
|
if ((dev->gsi_sqcq == get_ocrdma_cq(attrs->send_cq)) ||
|
|
(dev->gsi_rqcq == get_ocrdma_cq(attrs->recv_cq))) {
|
|
pr_err("%s(%d) Consumer QP cannot use GSI CQs.\n",
|
|
__func__, dev->id);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp,
|
|
struct ib_udata *udata, int dpp_offset,
|
|
int dpp_credit_lmt, int srq)
|
|
{
|
|
int status;
|
|
u64 usr_db;
|
|
struct ocrdma_create_qp_uresp uresp;
|
|
struct ocrdma_pd *pd = qp->pd;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
|
|
|
|
memset(&uresp, 0, sizeof(uresp));
|
|
usr_db = dev->nic_info.unmapped_db +
|
|
(pd->id * dev->nic_info.db_page_size);
|
|
uresp.qp_id = qp->id;
|
|
uresp.sq_dbid = qp->sq.dbid;
|
|
uresp.num_sq_pages = 1;
|
|
uresp.sq_page_size = PAGE_ALIGN(qp->sq.len);
|
|
uresp.sq_page_addr[0] = virt_to_phys(qp->sq.va);
|
|
uresp.num_wqe_allocated = qp->sq.max_cnt;
|
|
if (!srq) {
|
|
uresp.rq_dbid = qp->rq.dbid;
|
|
uresp.num_rq_pages = 1;
|
|
uresp.rq_page_size = PAGE_ALIGN(qp->rq.len);
|
|
uresp.rq_page_addr[0] = virt_to_phys(qp->rq.va);
|
|
uresp.num_rqe_allocated = qp->rq.max_cnt;
|
|
}
|
|
uresp.db_page_addr = usr_db;
|
|
uresp.db_page_size = dev->nic_info.db_page_size;
|
|
uresp.db_sq_offset = OCRDMA_DB_GEN2_SQ_OFFSET;
|
|
uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET;
|
|
uresp.db_shift = OCRDMA_DB_RQ_SHIFT;
|
|
|
|
if (qp->dpp_enabled) {
|
|
uresp.dpp_credit = dpp_credit_lmt;
|
|
uresp.dpp_offset = dpp_offset;
|
|
}
|
|
status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
|
|
if (status) {
|
|
pr_err("%s(%d) user copy error.\n", __func__, dev->id);
|
|
goto err;
|
|
}
|
|
status = ocrdma_add_mmap(pd->uctx, uresp.sq_page_addr[0],
|
|
uresp.sq_page_size);
|
|
if (status)
|
|
goto err;
|
|
|
|
if (!srq) {
|
|
status = ocrdma_add_mmap(pd->uctx, uresp.rq_page_addr[0],
|
|
uresp.rq_page_size);
|
|
if (status)
|
|
goto rq_map_err;
|
|
}
|
|
return status;
|
|
rq_map_err:
|
|
ocrdma_del_mmap(pd->uctx, uresp.sq_page_addr[0], uresp.sq_page_size);
|
|
err:
|
|
return status;
|
|
}
|
|
|
|
static void ocrdma_set_qp_db(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
|
|
struct ocrdma_pd *pd)
|
|
{
|
|
if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
|
|
qp->sq_db = dev->nic_info.db +
|
|
(pd->id * dev->nic_info.db_page_size) +
|
|
OCRDMA_DB_GEN2_SQ_OFFSET;
|
|
qp->rq_db = dev->nic_info.db +
|
|
(pd->id * dev->nic_info.db_page_size) +
|
|
OCRDMA_DB_GEN2_RQ_OFFSET;
|
|
} else {
|
|
qp->sq_db = dev->nic_info.db +
|
|
(pd->id * dev->nic_info.db_page_size) +
|
|
OCRDMA_DB_SQ_OFFSET;
|
|
qp->rq_db = dev->nic_info.db +
|
|
(pd->id * dev->nic_info.db_page_size) +
|
|
OCRDMA_DB_RQ_OFFSET;
|
|
}
|
|
}
|
|
|
|
static int ocrdma_alloc_wr_id_tbl(struct ocrdma_qp *qp)
|
|
{
|
|
qp->wqe_wr_id_tbl =
|
|
kzalloc(sizeof(*(qp->wqe_wr_id_tbl)) * qp->sq.max_cnt,
|
|
GFP_KERNEL);
|
|
if (qp->wqe_wr_id_tbl == NULL)
|
|
return -ENOMEM;
|
|
qp->rqe_wr_id_tbl =
|
|
kzalloc(sizeof(u64) * qp->rq.max_cnt, GFP_KERNEL);
|
|
if (qp->rqe_wr_id_tbl == NULL)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ocrdma_set_qp_init_params(struct ocrdma_qp *qp,
|
|
struct ocrdma_pd *pd,
|
|
struct ib_qp_init_attr *attrs)
|
|
{
|
|
qp->pd = pd;
|
|
spin_lock_init(&qp->q_lock);
|
|
INIT_LIST_HEAD(&qp->sq_entry);
|
|
INIT_LIST_HEAD(&qp->rq_entry);
|
|
|
|
qp->qp_type = attrs->qp_type;
|
|
qp->cap_flags = OCRDMA_QP_INB_RD | OCRDMA_QP_INB_WR;
|
|
qp->max_inline_data = attrs->cap.max_inline_data;
|
|
qp->sq.max_sges = attrs->cap.max_send_sge;
|
|
qp->rq.max_sges = attrs->cap.max_recv_sge;
|
|
qp->state = OCRDMA_QPS_RST;
|
|
qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false;
|
|
}
|
|
|
|
static void ocrdma_store_gsi_qp_cq(struct ocrdma_dev *dev,
|
|
struct ib_qp_init_attr *attrs)
|
|
{
|
|
if (attrs->qp_type == IB_QPT_GSI) {
|
|
dev->gsi_qp_created = 1;
|
|
dev->gsi_sqcq = get_ocrdma_cq(attrs->send_cq);
|
|
dev->gsi_rqcq = get_ocrdma_cq(attrs->recv_cq);
|
|
}
|
|
}
|
|
|
|
struct ib_qp *ocrdma_create_qp(struct ib_pd *ibpd,
|
|
struct ib_qp_init_attr *attrs,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status;
|
|
struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
|
|
struct ocrdma_qp *qp;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
|
|
struct ocrdma_create_qp_ureq ureq;
|
|
u16 dpp_credit_lmt, dpp_offset;
|
|
|
|
status = ocrdma_check_qp_params(ibpd, dev, attrs);
|
|
if (status)
|
|
goto gen_err;
|
|
|
|
memset(&ureq, 0, sizeof(ureq));
|
|
if (udata) {
|
|
if (ib_copy_from_udata(&ureq, udata, sizeof(ureq)))
|
|
return ERR_PTR(-EFAULT);
|
|
}
|
|
qp = kzalloc(sizeof(*qp), GFP_KERNEL);
|
|
if (!qp) {
|
|
status = -ENOMEM;
|
|
goto gen_err;
|
|
}
|
|
ocrdma_set_qp_init_params(qp, pd, attrs);
|
|
if (udata == NULL)
|
|
qp->cap_flags |= (OCRDMA_QP_MW_BIND | OCRDMA_QP_LKEY0 |
|
|
OCRDMA_QP_FAST_REG);
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
status = ocrdma_mbx_create_qp(qp, attrs, ureq.enable_dpp_cq,
|
|
ureq.dpp_cq_id,
|
|
&dpp_offset, &dpp_credit_lmt);
|
|
if (status)
|
|
goto mbx_err;
|
|
|
|
/* user space QP's wr_id table are managed in library */
|
|
if (udata == NULL) {
|
|
status = ocrdma_alloc_wr_id_tbl(qp);
|
|
if (status)
|
|
goto map_err;
|
|
}
|
|
|
|
status = ocrdma_add_qpn_map(dev, qp);
|
|
if (status)
|
|
goto map_err;
|
|
ocrdma_set_qp_db(dev, qp, pd);
|
|
if (udata) {
|
|
status = ocrdma_copy_qp_uresp(qp, udata, dpp_offset,
|
|
dpp_credit_lmt,
|
|
(attrs->srq != NULL));
|
|
if (status)
|
|
goto cpy_err;
|
|
}
|
|
ocrdma_store_gsi_qp_cq(dev, attrs);
|
|
qp->ibqp.qp_num = qp->id;
|
|
mutex_unlock(&dev->dev_lock);
|
|
return &qp->ibqp;
|
|
|
|
cpy_err:
|
|
ocrdma_del_qpn_map(dev, qp);
|
|
map_err:
|
|
ocrdma_mbx_destroy_qp(dev, qp);
|
|
mbx_err:
|
|
mutex_unlock(&dev->dev_lock);
|
|
kfree(qp->wqe_wr_id_tbl);
|
|
kfree(qp->rqe_wr_id_tbl);
|
|
kfree(qp);
|
|
pr_err("%s(%d) error=%d\n", __func__, dev->id, status);
|
|
gen_err:
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int _ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int attr_mask)
|
|
{
|
|
int status = 0;
|
|
struct ocrdma_qp *qp;
|
|
struct ocrdma_dev *dev;
|
|
enum ib_qp_state old_qps;
|
|
|
|
qp = get_ocrdma_qp(ibqp);
|
|
dev = get_ocrdma_dev(ibqp->device);
|
|
if (attr_mask & IB_QP_STATE)
|
|
status = ocrdma_qp_state_change(qp, attr->qp_state, &old_qps);
|
|
/* if new and previous states are same hw doesn't need to
|
|
* know about it.
|
|
*/
|
|
if (status < 0)
|
|
return status;
|
|
return ocrdma_mbx_modify_qp(dev, qp, attr, attr_mask);
|
|
}
|
|
|
|
int ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int attr_mask, struct ib_udata *udata)
|
|
{
|
|
unsigned long flags;
|
|
int status = -EINVAL;
|
|
struct ocrdma_qp *qp;
|
|
struct ocrdma_dev *dev;
|
|
enum ib_qp_state old_qps, new_qps;
|
|
|
|
qp = get_ocrdma_qp(ibqp);
|
|
dev = get_ocrdma_dev(ibqp->device);
|
|
|
|
/* syncronize with multiple context trying to change, retrive qps */
|
|
mutex_lock(&dev->dev_lock);
|
|
/* syncronize with wqe, rqe posting and cqe processing contexts */
|
|
spin_lock_irqsave(&qp->q_lock, flags);
|
|
old_qps = get_ibqp_state(qp->state);
|
|
if (attr_mask & IB_QP_STATE)
|
|
new_qps = attr->qp_state;
|
|
else
|
|
new_qps = old_qps;
|
|
spin_unlock_irqrestore(&qp->q_lock, flags);
|
|
|
|
if (!ib_modify_qp_is_ok(old_qps, new_qps, ibqp->qp_type, attr_mask,
|
|
IB_LINK_LAYER_ETHERNET)) {
|
|
pr_err("%s(%d) invalid attribute mask=0x%x specified for\n"
|
|
"qpn=0x%x of type=0x%x old_qps=0x%x, new_qps=0x%x\n",
|
|
__func__, dev->id, attr_mask, qp->id, ibqp->qp_type,
|
|
old_qps, new_qps);
|
|
goto param_err;
|
|
}
|
|
|
|
status = _ocrdma_modify_qp(ibqp, attr, attr_mask);
|
|
if (status > 0)
|
|
status = 0;
|
|
param_err:
|
|
mutex_unlock(&dev->dev_lock);
|
|
return status;
|
|
}
|
|
|
|
static enum ib_mtu ocrdma_mtu_int_to_enum(u16 mtu)
|
|
{
|
|
switch (mtu) {
|
|
case 256:
|
|
return IB_MTU_256;
|
|
case 512:
|
|
return IB_MTU_512;
|
|
case 1024:
|
|
return IB_MTU_1024;
|
|
case 2048:
|
|
return IB_MTU_2048;
|
|
case 4096:
|
|
return IB_MTU_4096;
|
|
default:
|
|
return IB_MTU_1024;
|
|
}
|
|
}
|
|
|
|
static int ocrdma_to_ib_qp_acc_flags(int qp_cap_flags)
|
|
{
|
|
int ib_qp_acc_flags = 0;
|
|
|
|
if (qp_cap_flags & OCRDMA_QP_INB_WR)
|
|
ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE;
|
|
if (qp_cap_flags & OCRDMA_QP_INB_RD)
|
|
ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE;
|
|
return ib_qp_acc_flags;
|
|
}
|
|
|
|
int ocrdma_query_qp(struct ib_qp *ibqp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int attr_mask, struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
int status;
|
|
u32 qp_state;
|
|
struct ocrdma_qp_params params;
|
|
struct ocrdma_qp *qp = get_ocrdma_qp(ibqp);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibqp->device);
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
mutex_lock(&dev->dev_lock);
|
|
status = ocrdma_mbx_query_qp(dev, qp, ¶ms);
|
|
mutex_unlock(&dev->dev_lock);
|
|
if (status)
|
|
goto mbx_err;
|
|
if (qp->qp_type == IB_QPT_UD)
|
|
qp_attr->qkey = params.qkey;
|
|
qp_attr->path_mtu =
|
|
ocrdma_mtu_int_to_enum(params.path_mtu_pkey_indx &
|
|
OCRDMA_QP_PARAMS_PATH_MTU_MASK) >>
|
|
OCRDMA_QP_PARAMS_PATH_MTU_SHIFT;
|
|
qp_attr->path_mig_state = IB_MIG_MIGRATED;
|
|
qp_attr->rq_psn = params.hop_lmt_rq_psn & OCRDMA_QP_PARAMS_RQ_PSN_MASK;
|
|
qp_attr->sq_psn = params.tclass_sq_psn & OCRDMA_QP_PARAMS_SQ_PSN_MASK;
|
|
qp_attr->dest_qp_num =
|
|
params.ack_to_rnr_rtc_dest_qpn & OCRDMA_QP_PARAMS_DEST_QPN_MASK;
|
|
|
|
qp_attr->qp_access_flags = ocrdma_to_ib_qp_acc_flags(qp->cap_flags);
|
|
qp_attr->cap.max_send_wr = qp->sq.max_cnt - 1;
|
|
qp_attr->cap.max_recv_wr = qp->rq.max_cnt - 1;
|
|
qp_attr->cap.max_send_sge = qp->sq.max_sges;
|
|
qp_attr->cap.max_recv_sge = qp->rq.max_sges;
|
|
qp_attr->cap.max_inline_data = qp->max_inline_data;
|
|
qp_init_attr->cap = qp_attr->cap;
|
|
memcpy(&qp_attr->ah_attr.grh.dgid, ¶ms.dgid[0],
|
|
sizeof(params.dgid));
|
|
qp_attr->ah_attr.grh.flow_label = params.rnt_rc_sl_fl &
|
|
OCRDMA_QP_PARAMS_FLOW_LABEL_MASK;
|
|
qp_attr->ah_attr.grh.sgid_index = qp->sgid_idx;
|
|
qp_attr->ah_attr.grh.hop_limit = (params.hop_lmt_rq_psn &
|
|
OCRDMA_QP_PARAMS_HOP_LMT_MASK) >>
|
|
OCRDMA_QP_PARAMS_HOP_LMT_SHIFT;
|
|
qp_attr->ah_attr.grh.traffic_class = (params.tclass_sq_psn &
|
|
OCRDMA_QP_PARAMS_TCLASS_MASK) >>
|
|
OCRDMA_QP_PARAMS_TCLASS_SHIFT;
|
|
|
|
qp_attr->ah_attr.ah_flags = IB_AH_GRH;
|
|
qp_attr->ah_attr.port_num = 1;
|
|
qp_attr->ah_attr.sl = (params.rnt_rc_sl_fl &
|
|
OCRDMA_QP_PARAMS_SL_MASK) >>
|
|
OCRDMA_QP_PARAMS_SL_SHIFT;
|
|
qp_attr->timeout = (params.ack_to_rnr_rtc_dest_qpn &
|
|
OCRDMA_QP_PARAMS_ACK_TIMEOUT_MASK) >>
|
|
OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
|
|
qp_attr->rnr_retry = (params.ack_to_rnr_rtc_dest_qpn &
|
|
OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK) >>
|
|
OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT;
|
|
qp_attr->retry_cnt =
|
|
(params.rnt_rc_sl_fl & OCRDMA_QP_PARAMS_RETRY_CNT_MASK) >>
|
|
OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT;
|
|
qp_attr->min_rnr_timer = 0;
|
|
qp_attr->pkey_index = 0;
|
|
qp_attr->port_num = 1;
|
|
qp_attr->ah_attr.src_path_bits = 0;
|
|
qp_attr->ah_attr.static_rate = 0;
|
|
qp_attr->alt_pkey_index = 0;
|
|
qp_attr->alt_port_num = 0;
|
|
qp_attr->alt_timeout = 0;
|
|
memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr));
|
|
qp_state = (params.max_sge_recv_flags & OCRDMA_QP_PARAMS_STATE_MASK) >>
|
|
OCRDMA_QP_PARAMS_STATE_SHIFT;
|
|
qp_attr->qp_state = get_ibqp_state(qp_state);
|
|
qp_attr->cur_qp_state = qp_attr->qp_state;
|
|
qp_attr->sq_draining = (qp_state == OCRDMA_QPS_SQ_DRAINING) ? 1 : 0;
|
|
qp_attr->max_dest_rd_atomic =
|
|
params.max_ord_ird >> OCRDMA_QP_PARAMS_MAX_ORD_SHIFT;
|
|
qp_attr->max_rd_atomic =
|
|
params.max_ord_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK;
|
|
qp_attr->en_sqd_async_notify = (params.max_sge_recv_flags &
|
|
OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC) ? 1 : 0;
|
|
/* Sync driver QP state with FW */
|
|
ocrdma_qp_state_change(qp, qp_attr->qp_state, NULL);
|
|
mbx_err:
|
|
return status;
|
|
}
|
|
|
|
static void ocrdma_srq_toggle_bit(struct ocrdma_srq *srq, unsigned int idx)
|
|
{
|
|
unsigned int i = idx / 32;
|
|
u32 mask = (1U << (idx % 32));
|
|
|
|
srq->idx_bit_fields[i] ^= mask;
|
|
}
|
|
|
|
static int ocrdma_hwq_free_cnt(struct ocrdma_qp_hwq_info *q)
|
|
{
|
|
return ((q->max_wqe_idx - q->head) + q->tail) % q->max_cnt;
|
|
}
|
|
|
|
static int is_hw_sq_empty(struct ocrdma_qp *qp)
|
|
{
|
|
return (qp->sq.tail == qp->sq.head);
|
|
}
|
|
|
|
static int is_hw_rq_empty(struct ocrdma_qp *qp)
|
|
{
|
|
return (qp->rq.tail == qp->rq.head);
|
|
}
|
|
|
|
static void *ocrdma_hwq_head(struct ocrdma_qp_hwq_info *q)
|
|
{
|
|
return q->va + (q->head * q->entry_size);
|
|
}
|
|
|
|
static void *ocrdma_hwq_head_from_idx(struct ocrdma_qp_hwq_info *q,
|
|
u32 idx)
|
|
{
|
|
return q->va + (idx * q->entry_size);
|
|
}
|
|
|
|
static void ocrdma_hwq_inc_head(struct ocrdma_qp_hwq_info *q)
|
|
{
|
|
q->head = (q->head + 1) & q->max_wqe_idx;
|
|
}
|
|
|
|
static void ocrdma_hwq_inc_tail(struct ocrdma_qp_hwq_info *q)
|
|
{
|
|
q->tail = (q->tail + 1) & q->max_wqe_idx;
|
|
}
|
|
|
|
/* discard the cqe for a given QP */
|
|
static void ocrdma_discard_cqes(struct ocrdma_qp *qp, struct ocrdma_cq *cq)
|
|
{
|
|
unsigned long cq_flags;
|
|
unsigned long flags;
|
|
int discard_cnt = 0;
|
|
u32 cur_getp, stop_getp;
|
|
struct ocrdma_cqe *cqe;
|
|
u32 qpn = 0, wqe_idx = 0;
|
|
|
|
spin_lock_irqsave(&cq->cq_lock, cq_flags);
|
|
|
|
/* traverse through the CQEs in the hw CQ,
|
|
* find the matching CQE for a given qp,
|
|
* mark the matching one discarded by clearing qpn.
|
|
* ring the doorbell in the poll_cq() as
|
|
* we don't complete out of order cqe.
|
|
*/
|
|
|
|
cur_getp = cq->getp;
|
|
/* find upto when do we reap the cq. */
|
|
stop_getp = cur_getp;
|
|
do {
|
|
if (is_hw_sq_empty(qp) && (!qp->srq && is_hw_rq_empty(qp)))
|
|
break;
|
|
|
|
cqe = cq->va + cur_getp;
|
|
/* if (a) done reaping whole hw cq, or
|
|
* (b) qp_xq becomes empty.
|
|
* then exit
|
|
*/
|
|
qpn = cqe->cmn.qpn & OCRDMA_CQE_QPN_MASK;
|
|
/* if previously discarded cqe found, skip that too. */
|
|
/* check for matching qp */
|
|
if (qpn == 0 || qpn != qp->id)
|
|
goto skip_cqe;
|
|
|
|
if (is_cqe_for_sq(cqe)) {
|
|
ocrdma_hwq_inc_tail(&qp->sq);
|
|
} else {
|
|
if (qp->srq) {
|
|
wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >>
|
|
OCRDMA_CQE_BUFTAG_SHIFT) &
|
|
qp->srq->rq.max_wqe_idx;
|
|
if (wqe_idx < 1)
|
|
BUG();
|
|
spin_lock_irqsave(&qp->srq->q_lock, flags);
|
|
ocrdma_hwq_inc_tail(&qp->srq->rq);
|
|
ocrdma_srq_toggle_bit(qp->srq, wqe_idx - 1);
|
|
spin_unlock_irqrestore(&qp->srq->q_lock, flags);
|
|
|
|
} else {
|
|
ocrdma_hwq_inc_tail(&qp->rq);
|
|
}
|
|
}
|
|
/* mark cqe discarded so that it is not picked up later
|
|
* in the poll_cq().
|
|
*/
|
|
discard_cnt += 1;
|
|
cqe->cmn.qpn = 0;
|
|
skip_cqe:
|
|
cur_getp = (cur_getp + 1) % cq->max_hw_cqe;
|
|
} while (cur_getp != stop_getp);
|
|
spin_unlock_irqrestore(&cq->cq_lock, cq_flags);
|
|
}
|
|
|
|
void ocrdma_del_flush_qp(struct ocrdma_qp *qp)
|
|
{
|
|
int found = false;
|
|
unsigned long flags;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
|
|
/* sync with any active CQ poll */
|
|
|
|
spin_lock_irqsave(&dev->flush_q_lock, flags);
|
|
found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
|
|
if (found)
|
|
list_del(&qp->sq_entry);
|
|
if (!qp->srq) {
|
|
found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
|
|
if (found)
|
|
list_del(&qp->rq_entry);
|
|
}
|
|
spin_unlock_irqrestore(&dev->flush_q_lock, flags);
|
|
}
|
|
|
|
int ocrdma_destroy_qp(struct ib_qp *ibqp)
|
|
{
|
|
struct ocrdma_pd *pd;
|
|
struct ocrdma_qp *qp;
|
|
struct ocrdma_dev *dev;
|
|
struct ib_qp_attr attrs;
|
|
int attr_mask;
|
|
unsigned long flags;
|
|
|
|
qp = get_ocrdma_qp(ibqp);
|
|
dev = get_ocrdma_dev(ibqp->device);
|
|
|
|
pd = qp->pd;
|
|
|
|
/* change the QP state to ERROR */
|
|
if (qp->state != OCRDMA_QPS_RST) {
|
|
attrs.qp_state = IB_QPS_ERR;
|
|
attr_mask = IB_QP_STATE;
|
|
_ocrdma_modify_qp(ibqp, &attrs, attr_mask);
|
|
}
|
|
/* ensure that CQEs for newly created QP (whose id may be same with
|
|
* one which just getting destroyed are same), dont get
|
|
* discarded until the old CQEs are discarded.
|
|
*/
|
|
mutex_lock(&dev->dev_lock);
|
|
(void) ocrdma_mbx_destroy_qp(dev, qp);
|
|
|
|
/*
|
|
* acquire CQ lock while destroy is in progress, in order to
|
|
* protect against proessing in-flight CQEs for this QP.
|
|
*/
|
|
spin_lock_irqsave(&qp->sq_cq->cq_lock, flags);
|
|
if (qp->rq_cq && (qp->rq_cq != qp->sq_cq))
|
|
spin_lock(&qp->rq_cq->cq_lock);
|
|
|
|
ocrdma_del_qpn_map(dev, qp);
|
|
|
|
if (qp->rq_cq && (qp->rq_cq != qp->sq_cq))
|
|
spin_unlock(&qp->rq_cq->cq_lock);
|
|
spin_unlock_irqrestore(&qp->sq_cq->cq_lock, flags);
|
|
|
|
if (!pd->uctx) {
|
|
ocrdma_discard_cqes(qp, qp->sq_cq);
|
|
ocrdma_discard_cqes(qp, qp->rq_cq);
|
|
}
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
if (pd->uctx) {
|
|
ocrdma_del_mmap(pd->uctx, (u64) qp->sq.pa,
|
|
PAGE_ALIGN(qp->sq.len));
|
|
if (!qp->srq)
|
|
ocrdma_del_mmap(pd->uctx, (u64) qp->rq.pa,
|
|
PAGE_ALIGN(qp->rq.len));
|
|
}
|
|
|
|
ocrdma_del_flush_qp(qp);
|
|
|
|
kfree(qp->wqe_wr_id_tbl);
|
|
kfree(qp->rqe_wr_id_tbl);
|
|
kfree(qp);
|
|
return 0;
|
|
}
|
|
|
|
static int ocrdma_copy_srq_uresp(struct ocrdma_dev *dev, struct ocrdma_srq *srq,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status;
|
|
struct ocrdma_create_srq_uresp uresp;
|
|
|
|
memset(&uresp, 0, sizeof(uresp));
|
|
uresp.rq_dbid = srq->rq.dbid;
|
|
uresp.num_rq_pages = 1;
|
|
uresp.rq_page_addr[0] = virt_to_phys(srq->rq.va);
|
|
uresp.rq_page_size = srq->rq.len;
|
|
uresp.db_page_addr = dev->nic_info.unmapped_db +
|
|
(srq->pd->id * dev->nic_info.db_page_size);
|
|
uresp.db_page_size = dev->nic_info.db_page_size;
|
|
uresp.num_rqe_allocated = srq->rq.max_cnt;
|
|
if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
|
|
uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET;
|
|
uresp.db_shift = 24;
|
|
} else {
|
|
uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET;
|
|
uresp.db_shift = 16;
|
|
}
|
|
|
|
status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
|
|
if (status)
|
|
return status;
|
|
status = ocrdma_add_mmap(srq->pd->uctx, uresp.rq_page_addr[0],
|
|
uresp.rq_page_size);
|
|
if (status)
|
|
return status;
|
|
return status;
|
|
}
|
|
|
|
struct ib_srq *ocrdma_create_srq(struct ib_pd *ibpd,
|
|
struct ib_srq_init_attr *init_attr,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status = -ENOMEM;
|
|
struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
|
|
struct ocrdma_srq *srq;
|
|
|
|
if (init_attr->attr.max_sge > dev->attr.max_recv_sge)
|
|
return ERR_PTR(-EINVAL);
|
|
if (init_attr->attr.max_wr > dev->attr.max_rqe)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
srq = kzalloc(sizeof(*srq), GFP_KERNEL);
|
|
if (!srq)
|
|
return ERR_PTR(status);
|
|
|
|
spin_lock_init(&srq->q_lock);
|
|
srq->pd = pd;
|
|
srq->db = dev->nic_info.db + (pd->id * dev->nic_info.db_page_size);
|
|
status = ocrdma_mbx_create_srq(dev, srq, init_attr, pd);
|
|
if (status)
|
|
goto err;
|
|
|
|
if (udata == NULL) {
|
|
srq->rqe_wr_id_tbl = kzalloc(sizeof(u64) * srq->rq.max_cnt,
|
|
GFP_KERNEL);
|
|
if (srq->rqe_wr_id_tbl == NULL)
|
|
goto arm_err;
|
|
|
|
srq->bit_fields_len = (srq->rq.max_cnt / 32) +
|
|
(srq->rq.max_cnt % 32 ? 1 : 0);
|
|
srq->idx_bit_fields =
|
|
kmalloc(srq->bit_fields_len * sizeof(u32), GFP_KERNEL);
|
|
if (srq->idx_bit_fields == NULL)
|
|
goto arm_err;
|
|
memset(srq->idx_bit_fields, 0xff,
|
|
srq->bit_fields_len * sizeof(u32));
|
|
}
|
|
|
|
if (init_attr->attr.srq_limit) {
|
|
status = ocrdma_mbx_modify_srq(srq, &init_attr->attr);
|
|
if (status)
|
|
goto arm_err;
|
|
}
|
|
|
|
if (udata) {
|
|
status = ocrdma_copy_srq_uresp(dev, srq, udata);
|
|
if (status)
|
|
goto arm_err;
|
|
}
|
|
|
|
return &srq->ibsrq;
|
|
|
|
arm_err:
|
|
ocrdma_mbx_destroy_srq(dev, srq);
|
|
err:
|
|
kfree(srq->rqe_wr_id_tbl);
|
|
kfree(srq->idx_bit_fields);
|
|
kfree(srq);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
int ocrdma_modify_srq(struct ib_srq *ibsrq,
|
|
struct ib_srq_attr *srq_attr,
|
|
enum ib_srq_attr_mask srq_attr_mask,
|
|
struct ib_udata *udata)
|
|
{
|
|
int status;
|
|
struct ocrdma_srq *srq;
|
|
|
|
srq = get_ocrdma_srq(ibsrq);
|
|
if (srq_attr_mask & IB_SRQ_MAX_WR)
|
|
status = -EINVAL;
|
|
else
|
|
status = ocrdma_mbx_modify_srq(srq, srq_attr);
|
|
return status;
|
|
}
|
|
|
|
int ocrdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
|
|
{
|
|
int status;
|
|
struct ocrdma_srq *srq;
|
|
|
|
srq = get_ocrdma_srq(ibsrq);
|
|
status = ocrdma_mbx_query_srq(srq, srq_attr);
|
|
return status;
|
|
}
|
|
|
|
int ocrdma_destroy_srq(struct ib_srq *ibsrq)
|
|
{
|
|
int status;
|
|
struct ocrdma_srq *srq;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibsrq->device);
|
|
|
|
srq = get_ocrdma_srq(ibsrq);
|
|
|
|
status = ocrdma_mbx_destroy_srq(dev, srq);
|
|
|
|
if (srq->pd->uctx)
|
|
ocrdma_del_mmap(srq->pd->uctx, (u64) srq->rq.pa,
|
|
PAGE_ALIGN(srq->rq.len));
|
|
|
|
kfree(srq->idx_bit_fields);
|
|
kfree(srq->rqe_wr_id_tbl);
|
|
kfree(srq);
|
|
return status;
|
|
}
|
|
|
|
/* unprivileged verbs and their support functions. */
|
|
static void ocrdma_build_ud_hdr(struct ocrdma_qp *qp,
|
|
struct ocrdma_hdr_wqe *hdr,
|
|
struct ib_send_wr *wr)
|
|
{
|
|
struct ocrdma_ewqe_ud_hdr *ud_hdr =
|
|
(struct ocrdma_ewqe_ud_hdr *)(hdr + 1);
|
|
struct ocrdma_ah *ah = get_ocrdma_ah(ud_wr(wr)->ah);
|
|
|
|
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 = ud_wr(wr)->remote_qkey;
|
|
ud_hdr->rsvd_ahid = ah->id;
|
|
ud_hdr->hdr_type = ah->hdr_type;
|
|
if (ah->av->valid & OCRDMA_AV_VLAN_VALID)
|
|
hdr->cw |= (OCRDMA_FLAG_AH_VLAN_PR << OCRDMA_WQE_FLAGS_SHIFT);
|
|
}
|
|
|
|
static void ocrdma_build_sges(struct ocrdma_hdr_wqe *hdr,
|
|
struct ocrdma_sge *sge, int num_sge,
|
|
struct ib_sge *sg_list)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_sge; i++) {
|
|
sge[i].lrkey = sg_list[i].lkey;
|
|
sge[i].addr_lo = sg_list[i].addr;
|
|
sge[i].addr_hi = upper_32_bits(sg_list[i].addr);
|
|
sge[i].len = sg_list[i].length;
|
|
hdr->total_len += sg_list[i].length;
|
|
}
|
|
if (num_sge == 0)
|
|
memset(sge, 0, sizeof(*sge));
|
|
}
|
|
|
|
static inline uint32_t ocrdma_sglist_len(struct ib_sge *sg_list, int num_sge)
|
|
{
|
|
uint32_t total_len = 0, i;
|
|
|
|
for (i = 0; i < num_sge; i++)
|
|
total_len += sg_list[i].length;
|
|
return total_len;
|
|
}
|
|
|
|
|
|
static int ocrdma_build_inline_sges(struct ocrdma_qp *qp,
|
|
struct ocrdma_hdr_wqe *hdr,
|
|
struct ocrdma_sge *sge,
|
|
struct ib_send_wr *wr, u32 wqe_size)
|
|
{
|
|
int i;
|
|
char *dpp_addr;
|
|
|
|
if (wr->send_flags & IB_SEND_INLINE && qp->qp_type != IB_QPT_UD) {
|
|
hdr->total_len = ocrdma_sglist_len(wr->sg_list, wr->num_sge);
|
|
if (unlikely(hdr->total_len > qp->max_inline_data)) {
|
|
pr_err("%s() supported_len=0x%x,\n"
|
|
" unsupported len req=0x%x\n", __func__,
|
|
qp->max_inline_data, hdr->total_len);
|
|
return -EINVAL;
|
|
}
|
|
dpp_addr = (char *)sge;
|
|
for (i = 0; i < wr->num_sge; i++) {
|
|
memcpy(dpp_addr,
|
|
(void *)(unsigned long)wr->sg_list[i].addr,
|
|
wr->sg_list[i].length);
|
|
dpp_addr += wr->sg_list[i].length;
|
|
}
|
|
|
|
wqe_size += roundup(hdr->total_len, OCRDMA_WQE_ALIGN_BYTES);
|
|
if (0 == hdr->total_len)
|
|
wqe_size += sizeof(struct ocrdma_sge);
|
|
hdr->cw |= (OCRDMA_TYPE_INLINE << OCRDMA_WQE_TYPE_SHIFT);
|
|
} else {
|
|
ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list);
|
|
if (wr->num_sge)
|
|
wqe_size += (wr->num_sge * sizeof(struct ocrdma_sge));
|
|
else
|
|
wqe_size += sizeof(struct ocrdma_sge);
|
|
hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
|
|
}
|
|
hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
|
|
return 0;
|
|
}
|
|
|
|
static int ocrdma_build_send(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
|
|
struct ib_send_wr *wr)
|
|
{
|
|
int status;
|
|
struct ocrdma_sge *sge;
|
|
u32 wqe_size = sizeof(*hdr);
|
|
|
|
if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) {
|
|
ocrdma_build_ud_hdr(qp, hdr, wr);
|
|
sge = (struct ocrdma_sge *)(hdr + 2);
|
|
wqe_size += sizeof(struct ocrdma_ewqe_ud_hdr);
|
|
} else {
|
|
sge = (struct ocrdma_sge *)(hdr + 1);
|
|
}
|
|
|
|
status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size);
|
|
return status;
|
|
}
|
|
|
|
static int ocrdma_build_write(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
|
|
struct ib_send_wr *wr)
|
|
{
|
|
int status;
|
|
struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1);
|
|
struct ocrdma_sge *sge = ext_rw + 1;
|
|
u32 wqe_size = sizeof(*hdr) + sizeof(*ext_rw);
|
|
|
|
status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size);
|
|
if (status)
|
|
return status;
|
|
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;
|
|
}
|
|
|
|
static void ocrdma_build_read(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
|
|
struct ib_send_wr *wr)
|
|
{
|
|
struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1);
|
|
struct ocrdma_sge *sge = ext_rw + 1;
|
|
u32 wqe_size = ((wr->num_sge + 1) * sizeof(struct ocrdma_sge)) +
|
|
sizeof(struct ocrdma_hdr_wqe);
|
|
|
|
ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list);
|
|
hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
|
|
hdr->cw |= (OCRDMA_READ << OCRDMA_WQE_OPCODE_SHIFT);
|
|
hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
|
|
|
|
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 int get_encoded_page_size(int pg_sz)
|
|
{
|
|
/* Max size is 256M 4096 << 16 */
|
|
int i = 0;
|
|
for (; i < 17; i++)
|
|
if (pg_sz == (4096 << i))
|
|
break;
|
|
return i;
|
|
}
|
|
|
|
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 = 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);
|
|
|
|
hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT);
|
|
hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
|
|
|
|
if (wr->access & IB_ACCESS_LOCAL_WRITE)
|
|
hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR;
|
|
if (wr->access & IB_ACCESS_REMOTE_WRITE)
|
|
hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR;
|
|
if (wr->access & IB_ACCESS_REMOTE_READ)
|
|
hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD;
|
|
hdr->lkey = wr->key;
|
|
hdr->total_len = mr->ibmr.length;
|
|
|
|
fbo = mr->ibmr.iova - mr->pages[0];
|
|
|
|
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 = 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;
|
|
}
|
|
|
|
static void ocrdma_ring_sq_db(struct ocrdma_qp *qp)
|
|
{
|
|
u32 val = qp->sq.dbid | (1 << OCRDMA_DB_SQ_SHIFT);
|
|
|
|
iowrite32(val, qp->sq_db);
|
|
}
|
|
|
|
int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
int status = 0;
|
|
struct ocrdma_qp *qp = get_ocrdma_qp(ibqp);
|
|
struct ocrdma_hdr_wqe *hdr;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&qp->q_lock, flags);
|
|
if (qp->state != OCRDMA_QPS_RTS && qp->state != OCRDMA_QPS_SQD) {
|
|
spin_unlock_irqrestore(&qp->q_lock, flags);
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
while (wr) {
|
|
if (qp->qp_type == IB_QPT_UD &&
|
|
(wr->opcode != IB_WR_SEND &&
|
|
wr->opcode != IB_WR_SEND_WITH_IMM)) {
|
|
*bad_wr = wr;
|
|
status = -EINVAL;
|
|
break;
|
|
}
|
|
if (ocrdma_hwq_free_cnt(&qp->sq) == 0 ||
|
|
wr->num_sge > qp->sq.max_sges) {
|
|
*bad_wr = wr;
|
|
status = -ENOMEM;
|
|
break;
|
|
}
|
|
hdr = ocrdma_hwq_head(&qp->sq);
|
|
hdr->cw = 0;
|
|
if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled)
|
|
hdr->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT);
|
|
if (wr->send_flags & IB_SEND_FENCE)
|
|
hdr->cw |=
|
|
(OCRDMA_FLAG_FENCE_L << OCRDMA_WQE_FLAGS_SHIFT);
|
|
if (wr->send_flags & IB_SEND_SOLICITED)
|
|
hdr->cw |=
|
|
(OCRDMA_FLAG_SOLICIT << OCRDMA_WQE_FLAGS_SHIFT);
|
|
hdr->total_len = 0;
|
|
switch (wr->opcode) {
|
|
case IB_WR_SEND_WITH_IMM:
|
|
hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT);
|
|
hdr->immdt = ntohl(wr->ex.imm_data);
|
|
case IB_WR_SEND:
|
|
hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT);
|
|
ocrdma_build_send(qp, hdr, wr);
|
|
break;
|
|
case IB_WR_SEND_WITH_INV:
|
|
hdr->cw |= (OCRDMA_FLAG_INV << OCRDMA_WQE_FLAGS_SHIFT);
|
|
hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT);
|
|
hdr->lkey = wr->ex.invalidate_rkey;
|
|
status = ocrdma_build_send(qp, hdr, wr);
|
|
break;
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT);
|
|
hdr->immdt = ntohl(wr->ex.imm_data);
|
|
case IB_WR_RDMA_WRITE:
|
|
hdr->cw |= (OCRDMA_WRITE << OCRDMA_WQE_OPCODE_SHIFT);
|
|
status = ocrdma_build_write(qp, hdr, wr);
|
|
break;
|
|
case IB_WR_RDMA_READ:
|
|
ocrdma_build_read(qp, hdr, wr);
|
|
break;
|
|
case IB_WR_LOCAL_INV:
|
|
hdr->cw |=
|
|
(OCRDMA_LKEY_INV << OCRDMA_WQE_OPCODE_SHIFT);
|
|
hdr->cw |= ((sizeof(struct ocrdma_hdr_wqe) +
|
|
sizeof(struct ocrdma_sge)) /
|
|
OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT;
|
|
hdr->lkey = wr->ex.invalidate_rkey;
|
|
break;
|
|
case IB_WR_REG_MR:
|
|
status = ocrdma_build_reg(qp, hdr, reg_wr(wr));
|
|
break;
|
|
default:
|
|
status = -EINVAL;
|
|
break;
|
|
}
|
|
if (status) {
|
|
*bad_wr = wr;
|
|
break;
|
|
}
|
|
if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled)
|
|
qp->wqe_wr_id_tbl[qp->sq.head].signaled = 1;
|
|
else
|
|
qp->wqe_wr_id_tbl[qp->sq.head].signaled = 0;
|
|
qp->wqe_wr_id_tbl[qp->sq.head].wrid = wr->wr_id;
|
|
ocrdma_cpu_to_le32(hdr, ((hdr->cw >> OCRDMA_WQE_SIZE_SHIFT) &
|
|
OCRDMA_WQE_SIZE_MASK) * OCRDMA_WQE_STRIDE);
|
|
/* make sure wqe is written before adapter can access it */
|
|
wmb();
|
|
/* inform hw to start processing it */
|
|
ocrdma_ring_sq_db(qp);
|
|
|
|
/* update pointer, counter for next wr */
|
|
ocrdma_hwq_inc_head(&qp->sq);
|
|
wr = wr->next;
|
|
}
|
|
spin_unlock_irqrestore(&qp->q_lock, flags);
|
|
return status;
|
|
}
|
|
|
|
static void ocrdma_ring_rq_db(struct ocrdma_qp *qp)
|
|
{
|
|
u32 val = qp->rq.dbid | (1 << OCRDMA_DB_RQ_SHIFT);
|
|
|
|
iowrite32(val, qp->rq_db);
|
|
}
|
|
|
|
static void ocrdma_build_rqe(struct ocrdma_hdr_wqe *rqe, struct ib_recv_wr *wr,
|
|
u16 tag)
|
|
{
|
|
u32 wqe_size = 0;
|
|
struct ocrdma_sge *sge;
|
|
if (wr->num_sge)
|
|
wqe_size = (wr->num_sge * sizeof(*sge)) + sizeof(*rqe);
|
|
else
|
|
wqe_size = sizeof(*sge) + sizeof(*rqe);
|
|
|
|
rqe->cw = ((wqe_size / OCRDMA_WQE_STRIDE) <<
|
|
OCRDMA_WQE_SIZE_SHIFT);
|
|
rqe->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT);
|
|
rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
|
|
rqe->total_len = 0;
|
|
rqe->rsvd_tag = tag;
|
|
sge = (struct ocrdma_sge *)(rqe + 1);
|
|
ocrdma_build_sges(rqe, sge, wr->num_sge, wr->sg_list);
|
|
ocrdma_cpu_to_le32(rqe, wqe_size);
|
|
}
|
|
|
|
int ocrdma_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
int status = 0;
|
|
unsigned long flags;
|
|
struct ocrdma_qp *qp = get_ocrdma_qp(ibqp);
|
|
struct ocrdma_hdr_wqe *rqe;
|
|
|
|
spin_lock_irqsave(&qp->q_lock, flags);
|
|
if (qp->state == OCRDMA_QPS_RST || qp->state == OCRDMA_QPS_ERR) {
|
|
spin_unlock_irqrestore(&qp->q_lock, flags);
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
while (wr) {
|
|
if (ocrdma_hwq_free_cnt(&qp->rq) == 0 ||
|
|
wr->num_sge > qp->rq.max_sges) {
|
|
*bad_wr = wr;
|
|
status = -ENOMEM;
|
|
break;
|
|
}
|
|
rqe = ocrdma_hwq_head(&qp->rq);
|
|
ocrdma_build_rqe(rqe, wr, 0);
|
|
|
|
qp->rqe_wr_id_tbl[qp->rq.head] = wr->wr_id;
|
|
/* make sure rqe is written before adapter can access it */
|
|
wmb();
|
|
|
|
/* inform hw to start processing it */
|
|
ocrdma_ring_rq_db(qp);
|
|
|
|
/* update pointer, counter for next wr */
|
|
ocrdma_hwq_inc_head(&qp->rq);
|
|
wr = wr->next;
|
|
}
|
|
spin_unlock_irqrestore(&qp->q_lock, flags);
|
|
return status;
|
|
}
|
|
|
|
/* cqe for srq's rqe can potentially arrive out of order.
|
|
* index gives the entry in the shadow table where to store
|
|
* the wr_id. tag/index is returned in cqe to reference back
|
|
* for a given rqe.
|
|
*/
|
|
static int ocrdma_srq_get_idx(struct ocrdma_srq *srq)
|
|
{
|
|
int row = 0;
|
|
int indx = 0;
|
|
|
|
for (row = 0; row < srq->bit_fields_len; row++) {
|
|
if (srq->idx_bit_fields[row]) {
|
|
indx = ffs(srq->idx_bit_fields[row]);
|
|
indx = (row * 32) + (indx - 1);
|
|
if (indx >= srq->rq.max_cnt)
|
|
BUG();
|
|
ocrdma_srq_toggle_bit(srq, indx);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (row == srq->bit_fields_len)
|
|
BUG();
|
|
return indx + 1; /* Use from index 1 */
|
|
}
|
|
|
|
static void ocrdma_ring_srq_db(struct ocrdma_srq *srq)
|
|
{
|
|
u32 val = srq->rq.dbid | (1 << 16);
|
|
|
|
iowrite32(val, srq->db + OCRDMA_DB_GEN2_SRQ_OFFSET);
|
|
}
|
|
|
|
int ocrdma_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
int status = 0;
|
|
unsigned long flags;
|
|
struct ocrdma_srq *srq;
|
|
struct ocrdma_hdr_wqe *rqe;
|
|
u16 tag;
|
|
|
|
srq = get_ocrdma_srq(ibsrq);
|
|
|
|
spin_lock_irqsave(&srq->q_lock, flags);
|
|
while (wr) {
|
|
if (ocrdma_hwq_free_cnt(&srq->rq) == 0 ||
|
|
wr->num_sge > srq->rq.max_sges) {
|
|
status = -ENOMEM;
|
|
*bad_wr = wr;
|
|
break;
|
|
}
|
|
tag = ocrdma_srq_get_idx(srq);
|
|
rqe = ocrdma_hwq_head(&srq->rq);
|
|
ocrdma_build_rqe(rqe, wr, tag);
|
|
|
|
srq->rqe_wr_id_tbl[tag] = wr->wr_id;
|
|
/* make sure rqe is written before adapter can perform DMA */
|
|
wmb();
|
|
/* inform hw to start processing it */
|
|
ocrdma_ring_srq_db(srq);
|
|
/* update pointer, counter for next wr */
|
|
ocrdma_hwq_inc_head(&srq->rq);
|
|
wr = wr->next;
|
|
}
|
|
spin_unlock_irqrestore(&srq->q_lock, flags);
|
|
return status;
|
|
}
|
|
|
|
static enum ib_wc_status ocrdma_to_ibwc_err(u16 status)
|
|
{
|
|
enum ib_wc_status ibwc_status;
|
|
|
|
switch (status) {
|
|
case OCRDMA_CQE_GENERAL_ERR:
|
|
ibwc_status = IB_WC_GENERAL_ERR;
|
|
break;
|
|
case OCRDMA_CQE_LOC_LEN_ERR:
|
|
ibwc_status = IB_WC_LOC_LEN_ERR;
|
|
break;
|
|
case OCRDMA_CQE_LOC_QP_OP_ERR:
|
|
ibwc_status = IB_WC_LOC_QP_OP_ERR;
|
|
break;
|
|
case OCRDMA_CQE_LOC_EEC_OP_ERR:
|
|
ibwc_status = IB_WC_LOC_EEC_OP_ERR;
|
|
break;
|
|
case OCRDMA_CQE_LOC_PROT_ERR:
|
|
ibwc_status = IB_WC_LOC_PROT_ERR;
|
|
break;
|
|
case OCRDMA_CQE_WR_FLUSH_ERR:
|
|
ibwc_status = IB_WC_WR_FLUSH_ERR;
|
|
break;
|
|
case OCRDMA_CQE_MW_BIND_ERR:
|
|
ibwc_status = IB_WC_MW_BIND_ERR;
|
|
break;
|
|
case OCRDMA_CQE_BAD_RESP_ERR:
|
|
ibwc_status = IB_WC_BAD_RESP_ERR;
|
|
break;
|
|
case OCRDMA_CQE_LOC_ACCESS_ERR:
|
|
ibwc_status = IB_WC_LOC_ACCESS_ERR;
|
|
break;
|
|
case OCRDMA_CQE_REM_INV_REQ_ERR:
|
|
ibwc_status = IB_WC_REM_INV_REQ_ERR;
|
|
break;
|
|
case OCRDMA_CQE_REM_ACCESS_ERR:
|
|
ibwc_status = IB_WC_REM_ACCESS_ERR;
|
|
break;
|
|
case OCRDMA_CQE_REM_OP_ERR:
|
|
ibwc_status = IB_WC_REM_OP_ERR;
|
|
break;
|
|
case OCRDMA_CQE_RETRY_EXC_ERR:
|
|
ibwc_status = IB_WC_RETRY_EXC_ERR;
|
|
break;
|
|
case OCRDMA_CQE_RNR_RETRY_EXC_ERR:
|
|
ibwc_status = IB_WC_RNR_RETRY_EXC_ERR;
|
|
break;
|
|
case OCRDMA_CQE_LOC_RDD_VIOL_ERR:
|
|
ibwc_status = IB_WC_LOC_RDD_VIOL_ERR;
|
|
break;
|
|
case OCRDMA_CQE_REM_INV_RD_REQ_ERR:
|
|
ibwc_status = IB_WC_REM_INV_RD_REQ_ERR;
|
|
break;
|
|
case OCRDMA_CQE_REM_ABORT_ERR:
|
|
ibwc_status = IB_WC_REM_ABORT_ERR;
|
|
break;
|
|
case OCRDMA_CQE_INV_EECN_ERR:
|
|
ibwc_status = IB_WC_INV_EECN_ERR;
|
|
break;
|
|
case OCRDMA_CQE_INV_EEC_STATE_ERR:
|
|
ibwc_status = IB_WC_INV_EEC_STATE_ERR;
|
|
break;
|
|
case OCRDMA_CQE_FATAL_ERR:
|
|
ibwc_status = IB_WC_FATAL_ERR;
|
|
break;
|
|
case OCRDMA_CQE_RESP_TIMEOUT_ERR:
|
|
ibwc_status = IB_WC_RESP_TIMEOUT_ERR;
|
|
break;
|
|
default:
|
|
ibwc_status = IB_WC_GENERAL_ERR;
|
|
break;
|
|
}
|
|
return ibwc_status;
|
|
}
|
|
|
|
static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc,
|
|
u32 wqe_idx)
|
|
{
|
|
struct ocrdma_hdr_wqe *hdr;
|
|
struct ocrdma_sge *rw;
|
|
int opcode;
|
|
|
|
hdr = ocrdma_hwq_head_from_idx(&qp->sq, wqe_idx);
|
|
|
|
ibwc->wr_id = qp->wqe_wr_id_tbl[wqe_idx].wrid;
|
|
/* Undo the hdr->cw swap */
|
|
opcode = le32_to_cpu(hdr->cw) & OCRDMA_WQE_OPCODE_MASK;
|
|
switch (opcode) {
|
|
case OCRDMA_WRITE:
|
|
ibwc->opcode = IB_WC_RDMA_WRITE;
|
|
break;
|
|
case OCRDMA_READ:
|
|
rw = (struct ocrdma_sge *)(hdr + 1);
|
|
ibwc->opcode = IB_WC_RDMA_READ;
|
|
ibwc->byte_len = rw->len;
|
|
break;
|
|
case OCRDMA_SEND:
|
|
ibwc->opcode = IB_WC_SEND;
|
|
break;
|
|
case OCRDMA_FR_MR:
|
|
ibwc->opcode = IB_WC_REG_MR;
|
|
break;
|
|
case OCRDMA_LKEY_INV:
|
|
ibwc->opcode = IB_WC_LOCAL_INV;
|
|
break;
|
|
default:
|
|
ibwc->status = IB_WC_GENERAL_ERR;
|
|
pr_err("%s() invalid opcode received = 0x%x\n",
|
|
__func__, hdr->cw & OCRDMA_WQE_OPCODE_MASK);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ocrdma_set_cqe_status_flushed(struct ocrdma_qp *qp,
|
|
struct ocrdma_cqe *cqe)
|
|
{
|
|
if (is_cqe_for_sq(cqe)) {
|
|
cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
|
|
cqe->flags_status_srcqpn) &
|
|
~OCRDMA_CQE_STATUS_MASK);
|
|
cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
|
|
cqe->flags_status_srcqpn) |
|
|
(OCRDMA_CQE_WR_FLUSH_ERR <<
|
|
OCRDMA_CQE_STATUS_SHIFT));
|
|
} else {
|
|
if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) {
|
|
cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
|
|
cqe->flags_status_srcqpn) &
|
|
~OCRDMA_CQE_UD_STATUS_MASK);
|
|
cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
|
|
cqe->flags_status_srcqpn) |
|
|
(OCRDMA_CQE_WR_FLUSH_ERR <<
|
|
OCRDMA_CQE_UD_STATUS_SHIFT));
|
|
} else {
|
|
cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
|
|
cqe->flags_status_srcqpn) &
|
|
~OCRDMA_CQE_STATUS_MASK);
|
|
cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
|
|
cqe->flags_status_srcqpn) |
|
|
(OCRDMA_CQE_WR_FLUSH_ERR <<
|
|
OCRDMA_CQE_STATUS_SHIFT));
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool ocrdma_update_err_cqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe,
|
|
struct ocrdma_qp *qp, int status)
|
|
{
|
|
bool expand = false;
|
|
|
|
ibwc->byte_len = 0;
|
|
ibwc->qp = &qp->ibqp;
|
|
ibwc->status = ocrdma_to_ibwc_err(status);
|
|
|
|
ocrdma_flush_qp(qp);
|
|
ocrdma_qp_state_change(qp, IB_QPS_ERR, NULL);
|
|
|
|
/* if wqe/rqe pending for which cqe needs to be returned,
|
|
* trigger inflating it.
|
|
*/
|
|
if (!is_hw_rq_empty(qp) || !is_hw_sq_empty(qp)) {
|
|
expand = true;
|
|
ocrdma_set_cqe_status_flushed(qp, cqe);
|
|
}
|
|
return expand;
|
|
}
|
|
|
|
static int ocrdma_update_err_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe,
|
|
struct ocrdma_qp *qp, int status)
|
|
{
|
|
ibwc->opcode = IB_WC_RECV;
|
|
ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail];
|
|
ocrdma_hwq_inc_tail(&qp->rq);
|
|
|
|
return ocrdma_update_err_cqe(ibwc, cqe, qp, status);
|
|
}
|
|
|
|
static int ocrdma_update_err_scqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe,
|
|
struct ocrdma_qp *qp, int status)
|
|
{
|
|
ocrdma_update_wc(qp, ibwc, qp->sq.tail);
|
|
ocrdma_hwq_inc_tail(&qp->sq);
|
|
|
|
return ocrdma_update_err_cqe(ibwc, cqe, qp, status);
|
|
}
|
|
|
|
|
|
static bool ocrdma_poll_err_scqe(struct ocrdma_qp *qp,
|
|
struct ocrdma_cqe *cqe, struct ib_wc *ibwc,
|
|
bool *polled, bool *stop)
|
|
{
|
|
bool expand;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
|
|
int status = (le32_to_cpu(cqe->flags_status_srcqpn) &
|
|
OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT;
|
|
if (status < OCRDMA_MAX_CQE_ERR)
|
|
atomic_inc(&dev->cqe_err_stats[status]);
|
|
|
|
/* when hw sq is empty, but rq is not empty, so we continue
|
|
* to keep the cqe in order to get the cq event again.
|
|
*/
|
|
if (is_hw_sq_empty(qp) && !is_hw_rq_empty(qp)) {
|
|
/* when cq for rq and sq is same, it is safe to return
|
|
* flush cqe for RQEs.
|
|
*/
|
|
if (!qp->srq && (qp->sq_cq == qp->rq_cq)) {
|
|
*polled = true;
|
|
status = OCRDMA_CQE_WR_FLUSH_ERR;
|
|
expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status);
|
|
} else {
|
|
/* stop processing further cqe as this cqe is used for
|
|
* triggering cq event on buddy cq of RQ.
|
|
* When QP is destroyed, this cqe will be removed
|
|
* from the cq's hardware q.
|
|
*/
|
|
*polled = false;
|
|
*stop = true;
|
|
expand = false;
|
|
}
|
|
} else if (is_hw_sq_empty(qp)) {
|
|
/* Do nothing */
|
|
expand = false;
|
|
*polled = false;
|
|
*stop = false;
|
|
} else {
|
|
*polled = true;
|
|
expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status);
|
|
}
|
|
return expand;
|
|
}
|
|
|
|
static bool ocrdma_poll_success_scqe(struct ocrdma_qp *qp,
|
|
struct ocrdma_cqe *cqe,
|
|
struct ib_wc *ibwc, bool *polled)
|
|
{
|
|
bool expand = false;
|
|
int tail = qp->sq.tail;
|
|
u32 wqe_idx;
|
|
|
|
if (!qp->wqe_wr_id_tbl[tail].signaled) {
|
|
*polled = false; /* WC cannot be consumed yet */
|
|
} else {
|
|
ibwc->status = IB_WC_SUCCESS;
|
|
ibwc->wc_flags = 0;
|
|
ibwc->qp = &qp->ibqp;
|
|
ocrdma_update_wc(qp, ibwc, tail);
|
|
*polled = true;
|
|
}
|
|
wqe_idx = (le32_to_cpu(cqe->wq.wqeidx) &
|
|
OCRDMA_CQE_WQEIDX_MASK) & qp->sq.max_wqe_idx;
|
|
if (tail != wqe_idx)
|
|
expand = true; /* Coalesced CQE can't be consumed yet */
|
|
|
|
ocrdma_hwq_inc_tail(&qp->sq);
|
|
return expand;
|
|
}
|
|
|
|
static bool ocrdma_poll_scqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe,
|
|
struct ib_wc *ibwc, bool *polled, bool *stop)
|
|
{
|
|
int status;
|
|
bool expand;
|
|
|
|
status = (le32_to_cpu(cqe->flags_status_srcqpn) &
|
|
OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT;
|
|
|
|
if (status == OCRDMA_CQE_SUCCESS)
|
|
expand = ocrdma_poll_success_scqe(qp, cqe, ibwc, polled);
|
|
else
|
|
expand = ocrdma_poll_err_scqe(qp, cqe, ibwc, polled, stop);
|
|
return expand;
|
|
}
|
|
|
|
static int ocrdma_update_ud_rcqe(struct ocrdma_dev *dev, struct ib_wc *ibwc,
|
|
struct ocrdma_cqe *cqe)
|
|
{
|
|
int status;
|
|
u16 hdr_type = 0;
|
|
|
|
status = (le32_to_cpu(cqe->flags_status_srcqpn) &
|
|
OCRDMA_CQE_UD_STATUS_MASK) >> OCRDMA_CQE_UD_STATUS_SHIFT;
|
|
ibwc->src_qp = le32_to_cpu(cqe->flags_status_srcqpn) &
|
|
OCRDMA_CQE_SRCQP_MASK;
|
|
ibwc->pkey_index = 0;
|
|
ibwc->wc_flags = IB_WC_GRH;
|
|
ibwc->byte_len = (le32_to_cpu(cqe->ud.rxlen_pkey) >>
|
|
OCRDMA_CQE_UD_XFER_LEN_SHIFT) &
|
|
OCRDMA_CQE_UD_XFER_LEN_MASK;
|
|
|
|
if (ocrdma_is_udp_encap_supported(dev)) {
|
|
hdr_type = (le32_to_cpu(cqe->ud.rxlen_pkey) >>
|
|
OCRDMA_CQE_UD_L3TYPE_SHIFT) &
|
|
OCRDMA_CQE_UD_L3TYPE_MASK;
|
|
ibwc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE;
|
|
ibwc->network_hdr_type = hdr_type;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static void ocrdma_update_free_srq_cqe(struct ib_wc *ibwc,
|
|
struct ocrdma_cqe *cqe,
|
|
struct ocrdma_qp *qp)
|
|
{
|
|
unsigned long flags;
|
|
struct ocrdma_srq *srq;
|
|
u32 wqe_idx;
|
|
|
|
srq = get_ocrdma_srq(qp->ibqp.srq);
|
|
wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >>
|
|
OCRDMA_CQE_BUFTAG_SHIFT) & srq->rq.max_wqe_idx;
|
|
if (wqe_idx < 1)
|
|
BUG();
|
|
|
|
ibwc->wr_id = srq->rqe_wr_id_tbl[wqe_idx];
|
|
spin_lock_irqsave(&srq->q_lock, flags);
|
|
ocrdma_srq_toggle_bit(srq, wqe_idx - 1);
|
|
spin_unlock_irqrestore(&srq->q_lock, flags);
|
|
ocrdma_hwq_inc_tail(&srq->rq);
|
|
}
|
|
|
|
static bool ocrdma_poll_err_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe,
|
|
struct ib_wc *ibwc, bool *polled, bool *stop,
|
|
int status)
|
|
{
|
|
bool expand;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
|
|
|
|
if (status < OCRDMA_MAX_CQE_ERR)
|
|
atomic_inc(&dev->cqe_err_stats[status]);
|
|
|
|
/* when hw_rq is empty, but wq is not empty, so continue
|
|
* to keep the cqe to get the cq event again.
|
|
*/
|
|
if (is_hw_rq_empty(qp) && !is_hw_sq_empty(qp)) {
|
|
if (!qp->srq && (qp->sq_cq == qp->rq_cq)) {
|
|
*polled = true;
|
|
status = OCRDMA_CQE_WR_FLUSH_ERR;
|
|
expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status);
|
|
} else {
|
|
*polled = false;
|
|
*stop = true;
|
|
expand = false;
|
|
}
|
|
} else if (is_hw_rq_empty(qp)) {
|
|
/* Do nothing */
|
|
expand = false;
|
|
*polled = false;
|
|
*stop = false;
|
|
} else {
|
|
*polled = true;
|
|
expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status);
|
|
}
|
|
return expand;
|
|
}
|
|
|
|
static void ocrdma_poll_success_rcqe(struct ocrdma_qp *qp,
|
|
struct ocrdma_cqe *cqe, struct ib_wc *ibwc)
|
|
{
|
|
struct ocrdma_dev *dev;
|
|
|
|
dev = get_ocrdma_dev(qp->ibqp.device);
|
|
ibwc->opcode = IB_WC_RECV;
|
|
ibwc->qp = &qp->ibqp;
|
|
ibwc->status = IB_WC_SUCCESS;
|
|
|
|
if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI)
|
|
ocrdma_update_ud_rcqe(dev, ibwc, cqe);
|
|
else
|
|
ibwc->byte_len = le32_to_cpu(cqe->rq.rxlen);
|
|
|
|
if (is_cqe_imm(cqe)) {
|
|
ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt));
|
|
ibwc->wc_flags |= IB_WC_WITH_IMM;
|
|
} else if (is_cqe_wr_imm(cqe)) {
|
|
ibwc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
|
|
ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt));
|
|
ibwc->wc_flags |= IB_WC_WITH_IMM;
|
|
} else if (is_cqe_invalidated(cqe)) {
|
|
ibwc->ex.invalidate_rkey = le32_to_cpu(cqe->rq.lkey_immdt);
|
|
ibwc->wc_flags |= IB_WC_WITH_INVALIDATE;
|
|
}
|
|
if (qp->ibqp.srq) {
|
|
ocrdma_update_free_srq_cqe(ibwc, cqe, qp);
|
|
} else {
|
|
ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail];
|
|
ocrdma_hwq_inc_tail(&qp->rq);
|
|
}
|
|
}
|
|
|
|
static bool ocrdma_poll_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe,
|
|
struct ib_wc *ibwc, bool *polled, bool *stop)
|
|
{
|
|
int status;
|
|
bool expand = false;
|
|
|
|
ibwc->wc_flags = 0;
|
|
if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) {
|
|
status = (le32_to_cpu(cqe->flags_status_srcqpn) &
|
|
OCRDMA_CQE_UD_STATUS_MASK) >>
|
|
OCRDMA_CQE_UD_STATUS_SHIFT;
|
|
} else {
|
|
status = (le32_to_cpu(cqe->flags_status_srcqpn) &
|
|
OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT;
|
|
}
|
|
|
|
if (status == OCRDMA_CQE_SUCCESS) {
|
|
*polled = true;
|
|
ocrdma_poll_success_rcqe(qp, cqe, ibwc);
|
|
} else {
|
|
expand = ocrdma_poll_err_rcqe(qp, cqe, ibwc, polled, stop,
|
|
status);
|
|
}
|
|
return expand;
|
|
}
|
|
|
|
static void ocrdma_change_cq_phase(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe,
|
|
u16 cur_getp)
|
|
{
|
|
if (cq->phase_change) {
|
|
if (cur_getp == 0)
|
|
cq->phase = (~cq->phase & OCRDMA_CQE_VALID);
|
|
} else {
|
|
/* clear valid bit */
|
|
cqe->flags_status_srcqpn = 0;
|
|
}
|
|
}
|
|
|
|
static int ocrdma_poll_hwcq(struct ocrdma_cq *cq, int num_entries,
|
|
struct ib_wc *ibwc)
|
|
{
|
|
u16 qpn = 0;
|
|
int i = 0;
|
|
bool expand = false;
|
|
int polled_hw_cqes = 0;
|
|
struct ocrdma_qp *qp = NULL;
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device);
|
|
struct ocrdma_cqe *cqe;
|
|
u16 cur_getp; bool polled = false; bool stop = false;
|
|
|
|
cur_getp = cq->getp;
|
|
while (num_entries) {
|
|
cqe = cq->va + cur_getp;
|
|
/* check whether valid cqe or not */
|
|
if (!is_cqe_valid(cq, cqe))
|
|
break;
|
|
qpn = (le32_to_cpu(cqe->cmn.qpn) & OCRDMA_CQE_QPN_MASK);
|
|
/* ignore discarded cqe */
|
|
if (qpn == 0)
|
|
goto skip_cqe;
|
|
qp = dev->qp_tbl[qpn];
|
|
BUG_ON(qp == NULL);
|
|
|
|
if (is_cqe_for_sq(cqe)) {
|
|
expand = ocrdma_poll_scqe(qp, cqe, ibwc, &polled,
|
|
&stop);
|
|
} else {
|
|
expand = ocrdma_poll_rcqe(qp, cqe, ibwc, &polled,
|
|
&stop);
|
|
}
|
|
if (expand)
|
|
goto expand_cqe;
|
|
if (stop)
|
|
goto stop_cqe;
|
|
/* clear qpn to avoid duplicate processing by discard_cqe() */
|
|
cqe->cmn.qpn = 0;
|
|
skip_cqe:
|
|
polled_hw_cqes += 1;
|
|
cur_getp = (cur_getp + 1) % cq->max_hw_cqe;
|
|
ocrdma_change_cq_phase(cq, cqe, cur_getp);
|
|
expand_cqe:
|
|
if (polled) {
|
|
num_entries -= 1;
|
|
i += 1;
|
|
ibwc = ibwc + 1;
|
|
polled = false;
|
|
}
|
|
}
|
|
stop_cqe:
|
|
cq->getp = cur_getp;
|
|
|
|
if (polled_hw_cqes)
|
|
ocrdma_ring_cq_db(dev, cq->id, false, false, polled_hw_cqes);
|
|
|
|
return i;
|
|
}
|
|
|
|
/* insert error cqe if the QP's SQ or RQ's CQ matches the CQ under poll. */
|
|
static int ocrdma_add_err_cqe(struct ocrdma_cq *cq, int num_entries,
|
|
struct ocrdma_qp *qp, struct ib_wc *ibwc)
|
|
{
|
|
int err_cqes = 0;
|
|
|
|
while (num_entries) {
|
|
if (is_hw_sq_empty(qp) && is_hw_rq_empty(qp))
|
|
break;
|
|
if (!is_hw_sq_empty(qp) && qp->sq_cq == cq) {
|
|
ocrdma_update_wc(qp, ibwc, qp->sq.tail);
|
|
ocrdma_hwq_inc_tail(&qp->sq);
|
|
} else if (!is_hw_rq_empty(qp) && qp->rq_cq == cq) {
|
|
ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail];
|
|
ocrdma_hwq_inc_tail(&qp->rq);
|
|
} else {
|
|
return err_cqes;
|
|
}
|
|
ibwc->byte_len = 0;
|
|
ibwc->status = IB_WC_WR_FLUSH_ERR;
|
|
ibwc = ibwc + 1;
|
|
err_cqes += 1;
|
|
num_entries -= 1;
|
|
}
|
|
return err_cqes;
|
|
}
|
|
|
|
int ocrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
|
|
{
|
|
int cqes_to_poll = num_entries;
|
|
struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device);
|
|
int num_os_cqe = 0, err_cqes = 0;
|
|
struct ocrdma_qp *qp;
|
|
unsigned long flags;
|
|
|
|
/* poll cqes from adapter CQ */
|
|
spin_lock_irqsave(&cq->cq_lock, flags);
|
|
num_os_cqe = ocrdma_poll_hwcq(cq, cqes_to_poll, wc);
|
|
spin_unlock_irqrestore(&cq->cq_lock, flags);
|
|
cqes_to_poll -= num_os_cqe;
|
|
|
|
if (cqes_to_poll) {
|
|
wc = wc + num_os_cqe;
|
|
/* adapter returns single error cqe when qp moves to
|
|
* error state. So insert error cqes with wc_status as
|
|
* FLUSHED for pending WQEs and RQEs of QP's SQ and RQ
|
|
* respectively which uses this CQ.
|
|
*/
|
|
spin_lock_irqsave(&dev->flush_q_lock, flags);
|
|
list_for_each_entry(qp, &cq->sq_head, sq_entry) {
|
|
if (cqes_to_poll == 0)
|
|
break;
|
|
err_cqes = ocrdma_add_err_cqe(cq, cqes_to_poll, qp, wc);
|
|
cqes_to_poll -= err_cqes;
|
|
num_os_cqe += err_cqes;
|
|
wc = wc + err_cqes;
|
|
}
|
|
spin_unlock_irqrestore(&dev->flush_q_lock, flags);
|
|
}
|
|
return num_os_cqe;
|
|
}
|
|
|
|
int ocrdma_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags cq_flags)
|
|
{
|
|
struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
|
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device);
|
|
u16 cq_id;
|
|
unsigned long flags;
|
|
bool arm_needed = false, sol_needed = false;
|
|
|
|
cq_id = cq->id;
|
|
|
|
spin_lock_irqsave(&cq->cq_lock, flags);
|
|
if (cq_flags & IB_CQ_NEXT_COMP || cq_flags & IB_CQ_SOLICITED)
|
|
arm_needed = true;
|
|
if (cq_flags & IB_CQ_SOLICITED)
|
|
sol_needed = true;
|
|
|
|
ocrdma_ring_cq_db(dev, cq_id, arm_needed, sol_needed, 0);
|
|
spin_unlock_irqrestore(&cq->cq_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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 (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);
|
|
|
|
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;
|
|
mr->hwmr.remote_rd = 0;
|
|
mr->hwmr.remote_wr = 0;
|
|
mr->hwmr.local_rd = 0;
|
|
mr->hwmr.local_wr = 0;
|
|
mr->hwmr.mw_bind = 0;
|
|
status = ocrdma_build_pbl_tbl(dev, &mr->hwmr);
|
|
if (status)
|
|
goto pbl_err;
|
|
status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, 0);
|
|
if (status)
|
|
goto mbx_err;
|
|
mr->ibmr.rkey = mr->hwmr.lkey;
|
|
mr->ibmr.lkey = mr->hwmr.lkey;
|
|
dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] =
|
|
(unsigned long) mr;
|
|
return &mr->ibmr;
|
|
mbx_err:
|
|
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
|
|
pbl_err:
|
|
kfree(mr->pages);
|
|
pl_err:
|
|
kfree(mr);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
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,
|
|
unsigned int *sg_offset)
|
|
{
|
|
struct ocrdma_mr *mr = get_ocrdma_mr(ibmr);
|
|
|
|
mr->npages = 0;
|
|
|
|
return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, ocrdma_set_page);
|
|
}
|