Merge branch 'linux-2.6'

1 files changed, 651 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
new file mode 100644
index 000000000000..688ecb4c39f3
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -0,0 +1,651 @@
+/*
+ * Copyright (c) 2006, 2007 Cisco Systems, Inc. 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 <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+
+#include <linux/mlx4/driver.h>
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4_ib.h"
+#include "user.h"
+
+#define DRV_NAME        "mlx4_ib"
+#define DRV_VERSION     "0.01"
+#define DRV_RELDATE     "May 1, 2006"
+
+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[] __devinitdata =
+        DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
+        DRV_VERSION " (" DRV_RELDATE ")\n";
+
+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 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;
+        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;
+
+        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;
+        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;
+        props->max_srq_sge         = dev->dev->caps.max_srq_sge;
+        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->max_pkeys           = dev->dev->caps.pkey_table_len;
+        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 = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
+
+out:
+        kfree(in_mad);
+        kfree(out_mad);
+
+        return err;
+}
+
+static int mlx4_ib_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 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;
+
+        memset(props, 0, sizeof *props);
+
+        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;
+        props->max_msg_sz       = 0x80000000;
+        props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len;
+        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;
+
+out:
+        kfree(in_mad);
+        kfree(out_mad);
+
+        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 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)
+{
+        if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
+                return -EOPNOTSUPP;
+
+        if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
+                spin_lock(&to_mdev(ibdev)->sm_lock);
+                memcpy(ibdev->node_desc, props->node_desc, 64);
+                spin_unlock(&to_mdev(ibdev)->sm_lock);
+        }
+
+        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;
+
+        mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
+        if (IS_ERR(mailbox))
+                return PTR_ERR(mailbox);
+
+        memset(mailbox->buf, 0, 256);
+        *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
+        ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
+
+        err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
+                       MLX4_CMD_TIME_CLASS_B);
+
+        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;
+
+        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) {
+                /* FIXME want pgprot_writecombine() for BlueFlame pages */
+                vma->vm_page_prot = pgprot_noncached(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 int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+        return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
+                                     &to_mqp(ibqp)->mqp, gid->raw);
+}
+
+static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+        return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
+                                     &to_mqp(ibqp)->mqp, gid->raw);
+}
+
+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 void *mlx4_ib_add(struct mlx4_dev *dev)
+{
+        struct mlx4_ib_dev *ibdev;
+
+        ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
+        if (!ibdev) {
+                dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
+                return NULL;
+        }
+
+        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(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
+        if (!ibdev->uar_map)
+                goto err_uar;
+
+        INIT_LIST_HEAD(&ibdev->pgdir_list);
+        mutex_init(&ibdev->pgdir_mutex);
+
+        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.phys_port_cnt     = dev->caps.num_ports;
+        ibdev->ib_dev.num_comp_vectors  = 1;
+        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_DESTROY_CQ)          |
+                (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
+                (1ull << IB_USER_VERBS_CMD_MODIFY_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_DESTROY_SRQ);
+
+        ibdev->ib_dev.query_device      = mlx4_ib_query_device;
+        ibdev->ib_dev.query_port        = mlx4_ib_query_port;
+        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.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.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.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.attach_mcast      = mlx4_ib_mcg_attach;
+        ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
+        ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
+
+        if (init_node_data(ibdev))
+                goto err_map;
+
+        spin_lock_init(&ibdev->sm_lock);
+        mutex_init(&ibdev->cap_mask_mutex);
+
+        if (ib_register_device(&ibdev->ib_dev))
+                goto err_map;
+
+        if (mlx4_ib_mad_init(ibdev))
+                goto err_reg;
+
+        return ibdev;
+
+err_reg:
+        ib_unregister_device(&ibdev->ib_dev);
+
+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;
+
+        for (p = 1; p <= dev->caps.num_ports; ++p)
+                mlx4_CLOSE_PORT(dev, p);
+
+        mlx4_ib_mad_cleanup(ibdev);
+        ib_unregister_device(&ibdev->ib_dev);
+        iounmap(ibdev->uar_map);
+        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, int subtype,
+                          int port)
+{
+        struct ib_event ibev;
+
+        switch (event) {
+        case MLX4_EVENT_TYPE_PORT_CHANGE:
+                ibev.event = subtype == MLX4_PORT_CHANGE_SUBTYPE_ACTIVE ?
+                        IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
+                break;
+
+        case MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR:
+                ibev.event = IB_EVENT_DEVICE_FATAL;
+                break;
+
+        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
+};
+
+static int __init mlx4_ib_init(void)
+{
+        return mlx4_register_interface(&mlx4_ib_interface);
+}
+
+static void __exit mlx4_ib_cleanup(void)
+{
+        mlx4_unregister_interface(&mlx4_ib_interface);
+}
+
+module_init(mlx4_ib_init);
+module_exit(mlx4_ib_cleanup);