/* * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mlx4_ib.h" #include "user.h" #define DRV_NAME MLX4_IB_DRV_NAME #define DRV_VERSION "1.0" #define DRV_RELDATE "April 4, 2008" MODULE_AUTHOR("Roland Dreier"); MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(DRV_VERSION); static const char mlx4_ib_version[] = DRV_NAME ": Mellanox ConnectX InfiniBand driver v" DRV_VERSION " (" DRV_RELDATE ")\n"; struct update_gid_work { struct work_struct work; union ib_gid gids[128]; struct mlx4_ib_dev *dev; int port; }; static struct workqueue_struct *wq; static void init_query_mad(struct ib_smp *mad) { mad->base_version = 1; mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; mad->class_version = 1; mad->method = IB_MGMT_METHOD_GET; } static union ib_gid zgid; static int mlx4_ib_query_device(struct ib_device *ibdev, struct ib_device_attr *props) { struct mlx4_ib_dev *dev = to_mdev(ibdev); struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); if (err) goto out; memset(props, 0, sizeof *props); props->fw_ver = dev->dev->caps.fw_ver; props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) props->device_cap_flags |= IB_DEVICE_UD_TSO; if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) props->device_cap_flags |= IB_DEVICE_XRC; props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 0xffffff; props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); memcpy(&props->sys_image_guid, out_mad->data + 4, 8); props->max_mr_size = ~0ull; props->page_size_cap = dev->dev->caps.page_size_cap; props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; props->max_sge = min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg); props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; props->max_cqe = dev->dev->caps.max_cqes; props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; props->max_srq_sge = dev->dev->caps.max_srq_sge; props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? IB_ATOMIC_HCA : IB_ATOMIC_NONE; props->masked_atomic_cap = props->atomic_cap; props->max_pkeys = dev->dev->caps.pkey_table_len[1]; props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * props->max_mcast_grp; props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; out: kfree(in_mad); kfree(out_mad); return err; } static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) { struct mlx4_dev *dev = to_mdev(device)->dev; return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; } static int ib_link_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int ext_active_speed; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; in_mad->attr_mod = cpu_to_be32(port); err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); if (err) goto out; props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); props->lmc = out_mad->data[34] & 0x7; props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); props->sm_sl = out_mad->data[36] & 0xf; props->state = out_mad->data[32] & 0xf; props->phys_state = out_mad->data[33] >> 4; props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); props->active_width = out_mad->data[31] & 0xf; props->active_speed = out_mad->data[35] >> 4; props->max_mtu = out_mad->data[41] & 0xf; props->active_mtu = out_mad->data[36] >> 4; props->subnet_timeout = out_mad->data[51] & 0x1f; props->max_vl_num = out_mad->data[37] >> 4; props->init_type_reply = out_mad->data[41] >> 4; /* Check if extended speeds (EDR/FDR/...) are supported */ if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { ext_active_speed = out_mad->data[62] >> 4; switch (ext_active_speed) { case 1: props->active_speed = IB_SPEED_FDR; break; case 2: props->active_speed = IB_SPEED_EDR; break; } } /* If reported active speed is QDR, check if is FDR-10 */ if (props->active_speed == IB_SPEED_QDR) { init_query_mad(in_mad); in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; in_mad->attr_mod = cpu_to_be32(port); err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); if (err) goto out; /* Checking LinkSpeedActive for FDR-10 */ if (out_mad->data[15] & 0x1) props->active_speed = IB_SPEED_FDR10; } /* Avoid wrong speed value returned by FW if the IB link is down. */ if (props->state == IB_PORT_DOWN) props->active_speed = IB_SPEED_SDR; out: kfree(in_mad); kfree(out_mad); return err; } static u8 state_to_phys_state(enum ib_port_state state) { return state == IB_PORT_ACTIVE ? 5 : 3; } static int eth_link_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { struct mlx4_ib_dev *mdev = to_mdev(ibdev); struct mlx4_ib_iboe *iboe = &mdev->iboe; struct net_device *ndev; enum ib_mtu tmp; struct mlx4_cmd_mailbox *mailbox; int err = 0; mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); if (IS_ERR(mailbox)) return PTR_ERR(mailbox); err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); if (err) goto out; props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? IB_WIDTH_4X : IB_WIDTH_1X; props->active_speed = IB_SPEED_QDR; props->port_cap_flags = IB_PORT_CM_SUP; props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; props->max_msg_sz = mdev->dev->caps.max_msg_sz; props->pkey_tbl_len = 1; props->max_mtu = IB_MTU_4096; props->max_vl_num = 2; props->state = IB_PORT_DOWN; props->phys_state = state_to_phys_state(props->state); props->active_mtu = IB_MTU_256; spin_lock(&iboe->lock); ndev = iboe->netdevs[port - 1]; if (!ndev) goto out_unlock; tmp = iboe_get_mtu(ndev->mtu); props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? IB_PORT_ACTIVE : IB_PORT_DOWN; props->phys_state = state_to_phys_state(props->state); out_unlock: spin_unlock(&iboe->lock); out: mlx4_free_cmd_mailbox(mdev->dev, mailbox); return err; } static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { int err; memset(props, 0, sizeof *props); err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? ib_link_query_port(ibdev, port, props) : eth_link_query_port(ibdev, port, props); return err; } static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; in_mad->attr_mod = cpu_to_be32(port); err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(gid->raw, out_mad->data + 8, 8); init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; in_mad->attr_mod = cpu_to_be32(index / 8); err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); out: kfree(in_mad); kfree(out_mad); return err; } static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct mlx4_ib_dev *dev = to_mdev(ibdev); *gid = dev->iboe.gid_table[port - 1][index]; return 0; } static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) return __mlx4_ib_query_gid(ibdev, port, index, gid); else return iboe_query_gid(ibdev, port, index, gid); } static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; in_mad->attr_mod = cpu_to_be32(index / 32); err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); if (err) goto out; *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); out: kfree(in_mad); kfree(out_mad); return err; } static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, struct ib_device_modify *props) { struct mlx4_cmd_mailbox *mailbox; unsigned long flags; if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) return -EOPNOTSUPP; if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) return 0; spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); memcpy(ibdev->node_desc, props->node_desc, 64); spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); /* * If possible, pass node desc to FW, so it can generate * a 144 trap. If cmd fails, just ignore. */ mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); if (IS_ERR(mailbox)) return 0; memset(mailbox->buf, 0, 256); memcpy(mailbox->buf, props->node_desc, 64); mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); return 0; } static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, u32 cap_mask) { struct mlx4_cmd_mailbox *mailbox; int err; u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; mailbox = mlx4_alloc_cmd_mailbox(dev->dev); if (IS_ERR(mailbox)) return PTR_ERR(mailbox); memset(mailbox->buf, 0, 256); if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); } else { ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); } err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); mlx4_free_cmd_mailbox(dev->dev, mailbox); return err; } static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, struct ib_port_modify *props) { struct ib_port_attr attr; u32 cap_mask; int err; mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); err = mlx4_ib_query_port(ibdev, port, &attr); if (err) goto out; cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & ~props->clr_port_cap_mask; err = mlx4_SET_PORT(to_mdev(ibdev), port, !!(mask & IB_PORT_RESET_QKEY_CNTR), cap_mask); out: mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); return err; } static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct mlx4_ib_dev *dev = to_mdev(ibdev); struct mlx4_ib_ucontext *context; struct mlx4_ib_alloc_ucontext_resp resp; int err; if (!dev->ib_active) return ERR_PTR(-EAGAIN); resp.qp_tab_size = dev->dev->caps.num_qps; resp.bf_reg_size = dev->dev->caps.bf_reg_size; resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; context = kmalloc(sizeof *context, GFP_KERNEL); if (!context) return ERR_PTR(-ENOMEM); err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); if (err) { kfree(context); return ERR_PTR(err); } INIT_LIST_HEAD(&context->db_page_list); mutex_init(&context->db_page_mutex); err = ib_copy_to_udata(udata, &resp, sizeof resp); if (err) { mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); kfree(context); return ERR_PTR(-EFAULT); } return &context->ibucontext; } static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) { struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); kfree(context); return 0; } static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) { struct mlx4_ib_dev *dev = to_mdev(context->device); if (vma->vm_end - vma->vm_start != PAGE_SIZE) return -EINVAL; if (vma->vm_pgoff == 0) { vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, to_mucontext(context)->uar.pfn, PAGE_SIZE, vma->vm_page_prot)) return -EAGAIN; } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, to_mucontext(context)->uar.pfn + dev->dev->caps.num_uars, PAGE_SIZE, vma->vm_page_prot)) return -EAGAIN; } else return -EINVAL; return 0; } static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct mlx4_ib_pd *pd; int err; pd = kmalloc(sizeof *pd, GFP_KERNEL); if (!pd) return ERR_PTR(-ENOMEM); err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); if (err) { kfree(pd); return ERR_PTR(err); } if (context) if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); kfree(pd); return ERR_PTR(-EFAULT); } return &pd->ibpd; } static int mlx4_ib_dealloc_pd(struct ib_pd *pd) { mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); kfree(pd); return 0; } static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct mlx4_ib_xrcd *xrcd; int err; if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) return ERR_PTR(-ENOSYS); xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); if (!xrcd) return ERR_PTR(-ENOMEM); err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); if (err) goto err1; xrcd->pd = ib_alloc_pd(ibdev); if (IS_ERR(xrcd->pd)) { err = PTR_ERR(xrcd->pd); goto err2; } xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); if (IS_ERR(xrcd->cq)) { err = PTR_ERR(xrcd->cq); goto err3; } return &xrcd->ibxrcd; err3: ib_dealloc_pd(xrcd->pd); err2: mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); err1: kfree(xrcd); return ERR_PTR(err); } static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) { ib_destroy_cq(to_mxrcd(xrcd)->cq); ib_dealloc_pd(to_mxrcd(xrcd)->pd); mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); kfree(xrcd); return 0; } static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) { struct mlx4_ib_qp *mqp = to_mqp(ibqp); struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); struct mlx4_ib_gid_entry *ge; ge = kzalloc(sizeof *ge, GFP_KERNEL); if (!ge) return -ENOMEM; ge->gid = *gid; if (mlx4_ib_add_mc(mdev, mqp, gid)) { ge->port = mqp->port; ge->added = 1; } mutex_lock(&mqp->mutex); list_add_tail(&ge->list, &mqp->gid_list); mutex_unlock(&mqp->mutex); return 0; } int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, union ib_gid *gid) { u8 mac[6]; struct net_device *ndev; int ret = 0; if (!mqp->port) return 0; spin_lock(&mdev->iboe.lock); ndev = mdev->iboe.netdevs[mqp->port - 1]; if (ndev) dev_hold(ndev); spin_unlock(&mdev->iboe.lock); if (ndev) { rdma_get_mcast_mac((struct in6_addr *)gid, mac); rtnl_lock(); dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); ret = 1; rtnl_unlock(); dev_put(ndev); } return ret; } struct mlx4_ib_steering { struct list_head list; u64 reg_id; union ib_gid gid; }; static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { int err; struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); struct mlx4_ib_qp *mqp = to_mqp(ibqp); u64 reg_id; struct mlx4_ib_steering *ib_steering = NULL; if (mdev->dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); if (!ib_steering) return -ENOMEM; } err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), MLX4_PROT_IB_IPV6, ®_id); if (err) goto err_malloc; err = add_gid_entry(ibqp, gid); if (err) goto err_add; if (ib_steering) { memcpy(ib_steering->gid.raw, gid->raw, 16); ib_steering->reg_id = reg_id; mutex_lock(&mqp->mutex); list_add(&ib_steering->list, &mqp->steering_rules); mutex_unlock(&mqp->mutex); } return 0; err_add: mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6, reg_id); err_malloc: kfree(ib_steering); return err; } static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) { struct mlx4_ib_gid_entry *ge; struct mlx4_ib_gid_entry *tmp; struct mlx4_ib_gid_entry *ret = NULL; list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { if (!memcmp(raw, ge->gid.raw, 16)) { ret = ge; break; } } return ret; } static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { int err; struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); struct mlx4_ib_qp *mqp = to_mqp(ibqp); u8 mac[6]; struct net_device *ndev; struct mlx4_ib_gid_entry *ge; u64 reg_id = 0; if (mdev->dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { struct mlx4_ib_steering *ib_steering; mutex_lock(&mqp->mutex); list_for_each_entry(ib_steering, &mqp->steering_rules, list) { if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { list_del(&ib_steering->list); break; } } mutex_unlock(&mqp->mutex); if (&ib_steering->list == &mqp->steering_rules) { pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); return -EINVAL; } reg_id = ib_steering->reg_id; kfree(ib_steering); } err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6, reg_id); if (err) return err; mutex_lock(&mqp->mutex); ge = find_gid_entry(mqp, gid->raw); if (ge) { spin_lock(&mdev->iboe.lock); ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; if (ndev) dev_hold(ndev); spin_unlock(&mdev->iboe.lock); rdma_get_mcast_mac((struct in6_addr *)gid, mac); if (ndev) { rtnl_lock(); dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); rtnl_unlock(); dev_put(ndev); } list_del(&ge->list); kfree(ge); } else pr_warn("could not find mgid entry\n"); mutex_unlock(&mqp->mutex); return 0; } static int init_node_data(struct mlx4_ib_dev *dev) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(dev->ib_dev.node_desc, out_mad->data, 64); in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); out: kfree(in_mad); kfree(out_mad); return err; } static ssize_t show_hca(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "MT%d\n", dev->dev->pdev->device); } static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, (int) dev->dev->caps.fw_ver & 0xffff); } static ssize_t show_rev(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "%x\n", dev->dev->rev_id); } static ssize_t show_board(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id); } static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); static struct device_attribute *mlx4_class_attributes[] = { &dev_attr_hw_rev, &dev_attr_fw_ver, &dev_attr_hca_type, &dev_attr_board_id }; static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) { memcpy(eui, dev->dev_addr, 3); memcpy(eui + 5, dev->dev_addr + 3, 3); if (vlan_id < 0x1000) { eui[3] = vlan_id >> 8; eui[4] = vlan_id & 0xff; } else { eui[3] = 0xff; eui[4] = 0xfe; } eui[0] ^= 2; } static void update_gids_task(struct work_struct *work) { struct update_gid_work *gw = container_of(work, struct update_gid_work, work); struct mlx4_cmd_mailbox *mailbox; union ib_gid *gids; int err; struct mlx4_dev *dev = gw->dev->dev; mailbox = mlx4_alloc_cmd_mailbox(dev); if (IS_ERR(mailbox)) { pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); return; } gids = mailbox->buf; memcpy(gids, gw->gids, sizeof gw->gids); err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); if (err) pr_warn("set port command failed\n"); else { memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); } mlx4_free_cmd_mailbox(dev, mailbox); kfree(gw); } static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) { struct net_device *ndev = dev->iboe.netdevs[port - 1]; struct update_gid_work *work; struct net_device *tmp; int i; u8 *hits; int ret; union ib_gid gid; int free; int found; int need_update = 0; u16 vid; work = kzalloc(sizeof *work, GFP_ATOMIC); if (!work) return -ENOMEM; hits = kzalloc(128, GFP_ATOMIC); if (!hits) { ret = -ENOMEM; goto out; } rcu_read_lock(); for_each_netdev_rcu(&init_net, tmp) { if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); vid = rdma_vlan_dev_vlan_id(tmp); mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); found = 0; free = -1; for (i = 0; i < 128; ++i) { if (free < 0 && !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) free = i; if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { hits[i] = 1; found = 1; break; } } if (!found) { if (tmp == ndev && (memcmp(&dev->iboe.gid_table[port - 1][0], &gid, sizeof gid) || !memcmp(&dev->iboe.gid_table[port - 1][0], &zgid, sizeof gid))) { dev->iboe.gid_table[port - 1][0] = gid; ++need_update; hits[0] = 1; } else if (free >= 0) { dev->iboe.gid_table[port - 1][free] = gid; hits[free] = 1; ++need_update; } } } } rcu_read_unlock(); for (i = 0; i < 128; ++i) if (!hits[i]) { if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) ++need_update; dev->iboe.gid_table[port - 1][i] = zgid; } if (need_update) { memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); INIT_WORK(&work->work, update_gids_task); work->port = port; work->dev = dev; queue_work(wq, &work->work); } else kfree(work); kfree(hits); return 0; out: kfree(work); return ret; } static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) { switch (event) { case NETDEV_UP: case NETDEV_CHANGEADDR: update_ipv6_gids(dev, port, 0); break; case NETDEV_DOWN: update_ipv6_gids(dev, port, 1); dev->iboe.netdevs[port - 1] = NULL; } } static void netdev_added(struct mlx4_ib_dev *dev, int port) { update_ipv6_gids(dev, port, 0); } static void netdev_removed(struct mlx4_ib_dev *dev, int port) { update_ipv6_gids(dev, port, 1); } static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = ptr; struct mlx4_ib_dev *ibdev; struct net_device *oldnd; struct mlx4_ib_iboe *iboe; int port; if (!net_eq(dev_net(dev), &init_net)) return NOTIFY_DONE; ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); iboe = &ibdev->iboe; spin_lock(&iboe->lock); mlx4_foreach_ib_transport_port(port, ibdev->dev) { oldnd = iboe->netdevs[port - 1]; iboe->netdevs[port - 1] = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); if (oldnd != iboe->netdevs[port - 1]) { if (iboe->netdevs[port - 1]) netdev_added(ibdev, port); else netdev_removed(ibdev, port); } } if (dev == iboe->netdevs[0] || (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) handle_en_event(ibdev, 1, event); else if (dev == iboe->netdevs[1] || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) handle_en_event(ibdev, 2, event); spin_unlock(&iboe->lock); return NOTIFY_DONE; } static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) { char name[32]; int eq_per_port = 0; int added_eqs = 0; int total_eqs = 0; int i, j, eq; /* Legacy mode or comp_pool is not large enough */ if (dev->caps.comp_pool == 0 || dev->caps.num_ports > dev->caps.comp_pool) return; eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ dev->caps.num_ports); /* Init eq table */ added_eqs = 0; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) added_eqs += eq_per_port; total_eqs = dev->caps.num_comp_vectors + added_eqs; ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); if (!ibdev->eq_table) return; ibdev->eq_added = added_eqs; eq = 0; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { for (j = 0; j < eq_per_port; j++) { sprintf(name, "mlx4-ib-%d-%d@%s", i, j, dev->pdev->bus->name); /* Set IRQ for specific name (per ring) */ if (mlx4_assign_eq(dev, name, NULL, &ibdev->eq_table[eq])) { /* Use legacy (same as mlx4_en driver) */ pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); ibdev->eq_table[eq] = (eq % dev->caps.num_comp_vectors); } eq++; } } /* Fill the reset of the vector with legacy EQ */ for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) ibdev->eq_table[eq++] = i; /* Advertise the new number of EQs to clients */ ibdev->ib_dev.num_comp_vectors = total_eqs; } static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) { int i; /* no additional eqs were added */ if (!ibdev->eq_table) return; /* Reset the advertised EQ number */ ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; /* Free only the added eqs */ for (i = 0; i < ibdev->eq_added; i++) { /* Don't free legacy eqs if used */ if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) continue; mlx4_release_eq(dev, ibdev->eq_table[i]); } kfree(ibdev->eq_table); } static void *mlx4_ib_add(struct mlx4_dev *dev) { struct mlx4_ib_dev *ibdev; int num_ports = 0; int i, j; int err; struct mlx4_ib_iboe *iboe; pr_info_once("%s", mlx4_ib_version); if (mlx4_is_mfunc(dev)) { pr_warn("IB not yet supported in SRIOV\n"); return NULL; } mlx4_foreach_ib_transport_port(i, dev) num_ports++; /* No point in registering a device with no ports... */ if (num_ports == 0) return NULL; ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); if (!ibdev) { dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); return NULL; } iboe = &ibdev->iboe; if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) goto err_dealloc; if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) goto err_pd; ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE); if (!ibdev->uar_map) goto err_uar; MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); ibdev->dev = dev; strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); ibdev->ib_dev.owner = THIS_MODULE; ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; ibdev->num_ports = num_ports; ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; ibdev->ib_dev.dma_device = &dev->pdev->dev; ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; ibdev->ib_dev.uverbs_cmd_mask = (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | (1ull << IB_USER_VERBS_CMD_REG_MR) | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | (1ull << IB_USER_VERBS_CMD_OPEN_QP); ibdev->ib_dev.query_device = mlx4_ib_query_device; ibdev->ib_dev.query_port = mlx4_ib_query_port; ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; ibdev->ib_dev.query_gid = mlx4_ib_query_gid; ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; ibdev->ib_dev.modify_device = mlx4_ib_modify_device; ibdev->ib_dev.modify_port = mlx4_ib_modify_port; ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; ibdev->ib_dev.mmap = mlx4_ib_mmap; ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; ibdev->ib_dev.create_ah = mlx4_ib_create_ah; ibdev->ib_dev.query_ah = mlx4_ib_query_ah; ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; ibdev->ib_dev.create_srq = mlx4_ib_create_srq; ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; ibdev->ib_dev.query_srq = mlx4_ib_query_srq; ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; ibdev->ib_dev.create_qp = mlx4_ib_create_qp; ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; ibdev->ib_dev.query_qp = mlx4_ib_query_qp; ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; ibdev->ib_dev.post_send = mlx4_ib_post_send; ibdev->ib_dev.post_recv = mlx4_ib_post_recv; ibdev->ib_dev.create_cq = mlx4_ib_create_cq; ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; ibdev->ib_dev.process_mad = mlx4_ib_process_mad; ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; ibdev->ib_dev.uverbs_cmd_mask |= (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); } mlx4_ib_alloc_eqs(dev, ibdev); spin_lock_init(&iboe->lock); if (init_node_data(ibdev)) goto err_map; for (i = 0; i < ibdev->num_ports; ++i) { if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == IB_LINK_LAYER_ETHERNET) { err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); if (err) ibdev->counters[i] = -1; } else ibdev->counters[i] = -1; } spin_lock_init(&ibdev->sm_lock); mutex_init(&ibdev->cap_mask_mutex); if (ib_register_device(&ibdev->ib_dev, NULL)) goto err_counter; if (mlx4_ib_mad_init(ibdev)) goto err_reg; if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { iboe->nb.notifier_call = mlx4_ib_netdev_event; err = register_netdevice_notifier(&iboe->nb); if (err) goto err_reg; } for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { if (device_create_file(&ibdev->ib_dev.dev, mlx4_class_attributes[j])) goto err_notif; } ibdev->ib_active = true; return ibdev; err_notif: if (unregister_netdevice_notifier(&ibdev->iboe.nb)) pr_warn("failure unregistering notifier\n"); flush_workqueue(wq); err_reg: ib_unregister_device(&ibdev->ib_dev); err_counter: for (; i; --i) if (ibdev->counters[i - 1] != -1) mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); err_map: iounmap(ibdev->uar_map); err_uar: mlx4_uar_free(dev, &ibdev->priv_uar); err_pd: mlx4_pd_free(dev, ibdev->priv_pdn); err_dealloc: ib_dealloc_device(&ibdev->ib_dev); return NULL; } static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) { struct mlx4_ib_dev *ibdev = ibdev_ptr; int p; mlx4_ib_mad_cleanup(ibdev); ib_unregister_device(&ibdev->ib_dev); if (ibdev->iboe.nb.notifier_call) { if (unregister_netdevice_notifier(&ibdev->iboe.nb)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb.notifier_call = NULL; } iounmap(ibdev->uar_map); for (p = 0; p < ibdev->num_ports; ++p) if (ibdev->counters[p] != -1) mlx4_counter_free(ibdev->dev, ibdev->counters[p]); mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) mlx4_CLOSE_PORT(dev, p); mlx4_ib_free_eqs(dev, ibdev); mlx4_uar_free(dev, &ibdev->priv_uar); mlx4_pd_free(dev, ibdev->priv_pdn); ib_dealloc_device(&ibdev->ib_dev); } static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, enum mlx4_dev_event event, unsigned long param) { struct ib_event ibev; struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); struct mlx4_eqe *eqe = NULL; struct ib_event_work *ew; int port = 0; if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) eqe = (struct mlx4_eqe *)param; else port = (u8)param; if (port > ibdev->num_ports) return; switch (event) { case MLX4_DEV_EVENT_PORT_UP: ibev.event = IB_EVENT_PORT_ACTIVE; break; case MLX4_DEV_EVENT_PORT_DOWN: ibev.event = IB_EVENT_PORT_ERR; break; case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: ibdev->ib_active = false; ibev.event = IB_EVENT_DEVICE_FATAL; break; case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: ew = kmalloc(sizeof *ew, GFP_ATOMIC); if (!ew) { pr_err("failed to allocate memory for events work\n"); break; } INIT_WORK(&ew->work, handle_port_mgmt_change_event); memcpy(&ew->ib_eqe, eqe, sizeof *eqe); ew->ib_dev = ibdev; handle_port_mgmt_change_event(&ew->work); return; default: return; } ibev.device = ibdev_ptr; ibev.element.port_num = port; ib_dispatch_event(&ibev); } static struct mlx4_interface mlx4_ib_interface = { .add = mlx4_ib_add, .remove = mlx4_ib_remove, .event = mlx4_ib_event, .protocol = MLX4_PROT_IB_IPV6 }; static int __init mlx4_ib_init(void) { int err; wq = create_singlethread_workqueue("mlx4_ib"); if (!wq) return -ENOMEM; err = mlx4_register_interface(&mlx4_ib_interface); if (err) { destroy_workqueue(wq); return err; } return 0; } static void __exit mlx4_ib_cleanup(void) { mlx4_unregister_interface(&mlx4_ib_interface); destroy_workqueue(wq); } module_init(mlx4_ib_init); module_exit(mlx4_ib_cleanup);