475 lines
13 KiB
C
475 lines
13 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/module.h>
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#include <linux/idr.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/ib_addr.h>
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#include <rdma/ib_mad.h>
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#include <linux/netdevice.h>
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#include <net/addrconf.h>
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#include "ocrdma.h"
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#include "ocrdma_verbs.h"
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#include "ocrdma_ah.h"
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#include "be_roce.h"
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#include "ocrdma_hw.h"
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#include "ocrdma_stats.h"
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#include <rdma/ocrdma-abi.h>
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MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
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MODULE_AUTHOR("Emulex Corporation");
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MODULE_LICENSE("Dual BSD/GPL");
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void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid)
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{
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u8 mac_addr[6];
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memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
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guid[0] = mac_addr[0] ^ 2;
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guid[1] = mac_addr[1];
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guid[2] = mac_addr[2];
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guid[3] = 0xff;
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guid[4] = 0xfe;
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guid[5] = mac_addr[3];
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guid[6] = mac_addr[4];
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guid[7] = mac_addr[5];
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}
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static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device,
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u8 port_num)
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{
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return IB_LINK_LAYER_ETHERNET;
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}
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static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
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struct ib_port_immutable *immutable)
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{
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struct ib_port_attr attr;
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struct ocrdma_dev *dev;
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int err;
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dev = get_ocrdma_dev(ibdev);
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immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
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if (ocrdma_is_udp_encap_supported(dev))
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immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
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err = ib_query_port(ibdev, port_num, &attr);
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if (err)
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return err;
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immutable->pkey_tbl_len = attr.pkey_tbl_len;
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immutable->gid_tbl_len = attr.gid_tbl_len;
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immutable->max_mad_size = IB_MGMT_MAD_SIZE;
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return 0;
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}
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static void get_dev_fw_str(struct ib_device *device, char *str)
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{
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struct ocrdma_dev *dev = get_ocrdma_dev(device);
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snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", &dev->attr.fw_ver[0]);
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}
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/* OCRDMA sysfs interface */
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static ssize_t hw_rev_show(struct device *device,
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struct device_attribute *attr, char *buf)
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{
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struct ocrdma_dev *dev =
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rdma_device_to_drv_device(device, struct ocrdma_dev, ibdev);
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return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
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}
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static DEVICE_ATTR_RO(hw_rev);
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static ssize_t hca_type_show(struct device *device,
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struct device_attribute *attr, char *buf)
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{
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struct ocrdma_dev *dev =
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rdma_device_to_drv_device(device, struct ocrdma_dev, ibdev);
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return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]);
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}
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static DEVICE_ATTR_RO(hca_type);
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static struct attribute *ocrdma_attributes[] = {
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&dev_attr_hw_rev.attr,
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&dev_attr_hca_type.attr,
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NULL
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};
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static const struct attribute_group ocrdma_attr_group = {
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.attrs = ocrdma_attributes,
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};
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static const struct ib_device_ops ocrdma_dev_ops = {
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.owner = THIS_MODULE,
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.driver_id = RDMA_DRIVER_OCRDMA,
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.uverbs_abi_ver = OCRDMA_ABI_VERSION,
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.alloc_mr = ocrdma_alloc_mr,
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.alloc_pd = ocrdma_alloc_pd,
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.alloc_ucontext = ocrdma_alloc_ucontext,
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.create_ah = ocrdma_create_ah,
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.create_cq = ocrdma_create_cq,
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.create_qp = ocrdma_create_qp,
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.dealloc_pd = ocrdma_dealloc_pd,
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.dealloc_ucontext = ocrdma_dealloc_ucontext,
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.dereg_mr = ocrdma_dereg_mr,
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.destroy_ah = ocrdma_destroy_ah,
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.destroy_cq = ocrdma_destroy_cq,
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.destroy_qp = ocrdma_destroy_qp,
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.get_dev_fw_str = get_dev_fw_str,
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.get_dma_mr = ocrdma_get_dma_mr,
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.get_link_layer = ocrdma_link_layer,
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.get_port_immutable = ocrdma_port_immutable,
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.map_mr_sg = ocrdma_map_mr_sg,
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.mmap = ocrdma_mmap,
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.modify_qp = ocrdma_modify_qp,
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.poll_cq = ocrdma_poll_cq,
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.post_recv = ocrdma_post_recv,
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.post_send = ocrdma_post_send,
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.process_mad = ocrdma_process_mad,
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.query_ah = ocrdma_query_ah,
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.query_device = ocrdma_query_device,
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.query_pkey = ocrdma_query_pkey,
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.query_port = ocrdma_query_port,
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.query_qp = ocrdma_query_qp,
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.reg_user_mr = ocrdma_reg_user_mr,
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.req_notify_cq = ocrdma_arm_cq,
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.resize_cq = ocrdma_resize_cq,
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INIT_RDMA_OBJ_SIZE(ib_ah, ocrdma_ah, ibah),
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INIT_RDMA_OBJ_SIZE(ib_cq, ocrdma_cq, ibcq),
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INIT_RDMA_OBJ_SIZE(ib_pd, ocrdma_pd, ibpd),
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INIT_RDMA_OBJ_SIZE(ib_ucontext, ocrdma_ucontext, ibucontext),
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};
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static const struct ib_device_ops ocrdma_dev_srq_ops = {
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.create_srq = ocrdma_create_srq,
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.destroy_srq = ocrdma_destroy_srq,
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.modify_srq = ocrdma_modify_srq,
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.post_srq_recv = ocrdma_post_srq_recv,
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.query_srq = ocrdma_query_srq,
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INIT_RDMA_OBJ_SIZE(ib_srq, ocrdma_srq, ibsrq),
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};
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static int ocrdma_register_device(struct ocrdma_dev *dev)
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{
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int ret;
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ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid);
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BUILD_BUG_ON(sizeof(OCRDMA_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
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memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
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sizeof(OCRDMA_NODE_DESC));
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dev->ibdev.uverbs_cmd_mask =
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OCRDMA_UVERBS(GET_CONTEXT) |
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OCRDMA_UVERBS(QUERY_DEVICE) |
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OCRDMA_UVERBS(QUERY_PORT) |
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OCRDMA_UVERBS(ALLOC_PD) |
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OCRDMA_UVERBS(DEALLOC_PD) |
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OCRDMA_UVERBS(REG_MR) |
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OCRDMA_UVERBS(DEREG_MR) |
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OCRDMA_UVERBS(CREATE_COMP_CHANNEL) |
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OCRDMA_UVERBS(CREATE_CQ) |
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OCRDMA_UVERBS(RESIZE_CQ) |
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OCRDMA_UVERBS(DESTROY_CQ) |
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OCRDMA_UVERBS(REQ_NOTIFY_CQ) |
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OCRDMA_UVERBS(CREATE_QP) |
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OCRDMA_UVERBS(MODIFY_QP) |
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OCRDMA_UVERBS(QUERY_QP) |
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OCRDMA_UVERBS(DESTROY_QP) |
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OCRDMA_UVERBS(POLL_CQ) |
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OCRDMA_UVERBS(POST_SEND) |
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OCRDMA_UVERBS(POST_RECV);
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dev->ibdev.uverbs_cmd_mask |=
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OCRDMA_UVERBS(CREATE_AH) |
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OCRDMA_UVERBS(MODIFY_AH) |
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OCRDMA_UVERBS(QUERY_AH) |
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OCRDMA_UVERBS(DESTROY_AH);
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dev->ibdev.node_type = RDMA_NODE_IB_CA;
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dev->ibdev.phys_port_cnt = 1;
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dev->ibdev.num_comp_vectors = dev->eq_cnt;
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/* mandatory to support user space verbs consumer. */
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dev->ibdev.dev.parent = &dev->nic_info.pdev->dev;
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ib_set_device_ops(&dev->ibdev, &ocrdma_dev_ops);
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if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
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dev->ibdev.uverbs_cmd_mask |=
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OCRDMA_UVERBS(CREATE_SRQ) |
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OCRDMA_UVERBS(MODIFY_SRQ) |
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OCRDMA_UVERBS(QUERY_SRQ) |
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OCRDMA_UVERBS(DESTROY_SRQ) |
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OCRDMA_UVERBS(POST_SRQ_RECV);
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ib_set_device_ops(&dev->ibdev, &ocrdma_dev_srq_ops);
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}
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rdma_set_device_sysfs_group(&dev->ibdev, &ocrdma_attr_group);
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ret = ib_device_set_netdev(&dev->ibdev, dev->nic_info.netdev, 1);
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if (ret)
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return ret;
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return ib_register_device(&dev->ibdev, "ocrdma%d");
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}
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static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
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{
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mutex_init(&dev->dev_lock);
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dev->cq_tbl = kcalloc(OCRDMA_MAX_CQ, sizeof(struct ocrdma_cq *),
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GFP_KERNEL);
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if (!dev->cq_tbl)
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goto alloc_err;
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if (dev->attr.max_qp) {
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dev->qp_tbl = kcalloc(OCRDMA_MAX_QP,
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sizeof(struct ocrdma_qp *),
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GFP_KERNEL);
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if (!dev->qp_tbl)
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goto alloc_err;
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}
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dev->stag_arr = kcalloc(OCRDMA_MAX_STAG, sizeof(u64), GFP_KERNEL);
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if (dev->stag_arr == NULL)
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goto alloc_err;
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ocrdma_alloc_pd_pool(dev);
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if (!ocrdma_alloc_stats_resources(dev)) {
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pr_err("%s: stats resource allocation failed\n", __func__);
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goto alloc_err;
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}
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spin_lock_init(&dev->av_tbl.lock);
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spin_lock_init(&dev->flush_q_lock);
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return 0;
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alloc_err:
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pr_err("%s(%d) error.\n", __func__, dev->id);
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return -ENOMEM;
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}
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static void ocrdma_free_resources(struct ocrdma_dev *dev)
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{
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ocrdma_release_stats_resources(dev);
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kfree(dev->stag_arr);
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kfree(dev->qp_tbl);
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kfree(dev->cq_tbl);
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}
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static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
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{
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int status = 0;
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u8 lstate = 0;
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struct ocrdma_dev *dev;
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dev = ib_alloc_device(ocrdma_dev, ibdev);
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if (!dev) {
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pr_err("Unable to allocate ib device\n");
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return NULL;
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}
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dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
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if (!dev->mbx_cmd)
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goto init_err;
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memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
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dev->id = PCI_FUNC(dev->nic_info.pdev->devfn);
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status = ocrdma_init_hw(dev);
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if (status)
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goto init_err;
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status = ocrdma_alloc_resources(dev);
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if (status)
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goto alloc_err;
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ocrdma_init_service_level(dev);
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status = ocrdma_register_device(dev);
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if (status)
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goto alloc_err;
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/* Query Link state and update */
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status = ocrdma_mbx_get_link_speed(dev, NULL, &lstate);
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if (!status)
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ocrdma_update_link_state(dev, lstate);
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/* Init stats */
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ocrdma_add_port_stats(dev);
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/* Interrupt Moderation */
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INIT_DELAYED_WORK(&dev->eqd_work, ocrdma_eqd_set_task);
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schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
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pr_info("%s %s: %s \"%s\" port %d\n",
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dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
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port_speed_string(dev), dev->model_number,
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dev->hba_port_num);
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pr_info("%s ocrdma%d driver loaded successfully\n",
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dev_name(&dev->nic_info.pdev->dev), dev->id);
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return dev;
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alloc_err:
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ocrdma_free_resources(dev);
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ocrdma_cleanup_hw(dev);
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init_err:
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kfree(dev->mbx_cmd);
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ib_dealloc_device(&dev->ibdev);
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pr_err("%s() leaving. ret=%d\n", __func__, status);
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return NULL;
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}
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static void ocrdma_remove_free(struct ocrdma_dev *dev)
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{
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kfree(dev->mbx_cmd);
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ib_dealloc_device(&dev->ibdev);
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}
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static void ocrdma_remove(struct ocrdma_dev *dev)
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{
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/* first unregister with stack to stop all the active traffic
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* of the registered clients.
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*/
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cancel_delayed_work_sync(&dev->eqd_work);
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ib_unregister_device(&dev->ibdev);
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ocrdma_rem_port_stats(dev);
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ocrdma_free_resources(dev);
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ocrdma_cleanup_hw(dev);
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ocrdma_remove_free(dev);
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}
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static int ocrdma_dispatch_port_active(struct ocrdma_dev *dev)
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{
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struct ib_event port_event;
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port_event.event = IB_EVENT_PORT_ACTIVE;
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port_event.element.port_num = 1;
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port_event.device = &dev->ibdev;
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ib_dispatch_event(&port_event);
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return 0;
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}
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static int ocrdma_dispatch_port_error(struct ocrdma_dev *dev)
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{
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struct ib_event err_event;
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err_event.event = IB_EVENT_PORT_ERR;
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err_event.element.port_num = 1;
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err_event.device = &dev->ibdev;
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ib_dispatch_event(&err_event);
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return 0;
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}
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static void ocrdma_shutdown(struct ocrdma_dev *dev)
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{
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ocrdma_dispatch_port_error(dev);
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ocrdma_remove(dev);
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}
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/* event handling via NIC driver ensures that all the NIC specific
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* initialization done before RoCE driver notifies
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* event to stack.
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*/
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static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event)
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{
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switch (event) {
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case BE_DEV_SHUTDOWN:
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ocrdma_shutdown(dev);
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break;
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default:
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break;
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}
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}
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void ocrdma_update_link_state(struct ocrdma_dev *dev, u8 lstate)
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{
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if (!(dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)) {
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dev->flags |= OCRDMA_FLAGS_LINK_STATUS_INIT;
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if (!lstate)
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return;
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}
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if (!lstate)
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ocrdma_dispatch_port_error(dev);
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else
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ocrdma_dispatch_port_active(dev);
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}
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static struct ocrdma_driver ocrdma_drv = {
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.name = "ocrdma_driver",
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.add = ocrdma_add,
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.remove = ocrdma_remove,
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.state_change_handler = ocrdma_event_handler,
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.be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION,
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};
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static int __init ocrdma_init_module(void)
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{
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int status;
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ocrdma_init_debugfs();
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status = be_roce_register_driver(&ocrdma_drv);
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if (status)
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goto err_be_reg;
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return 0;
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err_be_reg:
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return status;
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}
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static void __exit ocrdma_exit_module(void)
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{
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be_roce_unregister_driver(&ocrdma_drv);
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ocrdma_rem_debugfs();
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}
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module_init(ocrdma_init_module);
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module_exit(ocrdma_exit_module);
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