--- /dev/null
+/*
+ * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2004 Voltaire, 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 <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_user_verbs.h>
+
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/export.h>
+
+#include "mthca_dev.h"
+#include "mthca_cmd.h"
+#include "mthca_user.h"
+#include "mthca_memfree.h"
+
+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 mthca_query_device(struct ib_device *ibdev,
+ struct ib_device_attr *props)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+ struct mthca_dev *mdev = to_mdev(ibdev);
+
+ 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);
+
+ props->fw_ver = mdev->fw_ver;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
+
+ err = mthca_MAD_IFC(mdev, 1, 1,
+ 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ props->device_cap_flags = mdev->device_cap_flags;
+ 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 = mdev->limits.page_size_cap;
+ props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
+ props->max_qp_wr = mdev->limits.max_wqes;
+ props->max_sge = mdev->limits.max_sg;
+ props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
+ props->max_cqe = mdev->limits.max_cqes;
+ props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
+ props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
+ props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
+ props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
+ props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
+ props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
+ props->max_srq_wr = mdev->limits.max_srq_wqes;
+ props->max_srq_sge = mdev->limits.max_srq_sge;
+ props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
+ props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
+ IB_ATOMIC_HCA : IB_ATOMIC_NONE;
+ props->max_pkeys = mdev->limits.pkey_table_len;
+ props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
+ props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
+ props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
+ props->max_mcast_grp;
+ /*
+ * If Sinai memory key optimization is being used, then only
+ * the 8-bit key portion will change. For other HCAs, the
+ * unused index bits will also be used for FMR remapping.
+ */
+ if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
+ props->max_map_per_fmr = 255;
+ else
+ props->max_map_per_fmr =
+ (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
+
+ err = 0;
+ out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+static int mthca_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 = mthca_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)->limits.gid_table_len;
+ props->max_msg_sz = 0x80000000;
+ props->pkey_tbl_len = to_mdev(ibdev)->limits.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 mthca_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) {
+ if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
+ return -ERESTARTSYS;
+ memcpy(ibdev->node_desc, props->node_desc, 64);
+ mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
+ }
+
+ return 0;
+}
+
+static int mthca_modify_port(struct ib_device *ibdev,
+ u8 port, int port_modify_mask,
+ struct ib_port_modify *props)
+{
+ struct mthca_set_ib_param set_ib;
+ struct ib_port_attr attr;
+ int err;
+
+ if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
+ return -ERESTARTSYS;
+
+ err = mthca_query_port(ibdev, port, &attr);
+ if (err)
+ goto out;
+
+ set_ib.set_si_guid = 0;
+ set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
+
+ set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
+ ~props->clr_port_cap_mask;
+
+ err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
+ if (err)
+ goto out;
+out:
+ mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
+ return err;
+}
+
+static int mthca_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 = mthca_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 mthca_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 = mthca_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 = mthca_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 struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct mthca_alloc_ucontext_resp uresp;
+ struct mthca_ucontext *context;
+ int err;
+
+ if (!(to_mdev(ibdev)->active))
+ return ERR_PTR(-EAGAIN);
+
+ memset(&uresp, 0, sizeof uresp);
+
+ uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
+ if (mthca_is_memfree(to_mdev(ibdev)))
+ uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
+ else
+ uresp.uarc_size = 0;
+
+ context = kmalloc(sizeof *context, GFP_KERNEL);
+ if (!context)
+ return ERR_PTR(-ENOMEM);
+
+ err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
+ if (err) {
+ kfree(context);
+ return ERR_PTR(err);
+ }
+
+ context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
+ if (IS_ERR(context->db_tab)) {
+ err = PTR_ERR(context->db_tab);
+ mthca_uar_free(to_mdev(ibdev), &context->uar);
+ kfree(context);
+ return ERR_PTR(err);
+ }
+
+ if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
+ mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
+ mthca_uar_free(to_mdev(ibdev), &context->uar);
+ kfree(context);
+ return ERR_PTR(-EFAULT);
+ }
+
+ context->reg_mr_warned = 0;
+
+ return &context->ibucontext;
+}
+
+static int mthca_dealloc_ucontext(struct ib_ucontext *context)
+{
+ mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
+ to_mucontext(context)->db_tab);
+ mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
+ kfree(to_mucontext(context));
+
+ return 0;
+}
+
+static int mthca_mmap_uar(struct ib_ucontext *context,
+ struct vm_area_struct *vma)
+{
+ if (vma->vm_end - vma->vm_start != PAGE_SIZE)
+ return -EINVAL;
+
+ 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;
+
+ return 0;
+}
+
+static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mthca_pd *pd;
+ int err;
+
+ pd = kmalloc(sizeof *pd, GFP_KERNEL);
+ if (!pd)
+ return ERR_PTR(-ENOMEM);
+
+ err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
+ if (err) {
+ kfree(pd);
+ return ERR_PTR(err);
+ }
+
+ if (context) {
+ if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
+ mthca_pd_free(to_mdev(ibdev), pd);
+ kfree(pd);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+
+ return &pd->ibpd;
+}
+
+static int mthca_dealloc_pd(struct ib_pd *pd)
+{
+ mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
+ kfree(pd);
+
+ return 0;
+}
+
+static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
+ struct ib_ah_attr *ah_attr)
+{
+ int err;
+ struct mthca_ah *ah;
+
+ ah = kmalloc(sizeof *ah, GFP_ATOMIC);
+ if (!ah)
+ return ERR_PTR(-ENOMEM);
+
+ err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
+ if (err) {
+ kfree(ah);
+ return ERR_PTR(err);
+ }
+
+ return &ah->ibah;
+}
+
+static int mthca_ah_destroy(struct ib_ah *ah)
+{
+ mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
+ kfree(ah);
+
+ return 0;
+}
+
+static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
+ struct ib_srq_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mthca_create_srq ucmd;
+ struct mthca_ucontext *context = NULL;
+ struct mthca_srq *srq;
+ int err;
+
+ if (init_attr->srq_type != IB_SRQT_BASIC)
+ return ERR_PTR(-ENOSYS);
+
+ srq = kmalloc(sizeof *srq, GFP_KERNEL);
+ if (!srq)
+ return ERR_PTR(-ENOMEM);
+
+ if (pd->uobject) {
+ context = to_mucontext(pd->uobject->context);
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
+ err = -EFAULT;
+ goto err_free;
+ }
+
+ err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
+ context->db_tab, ucmd.db_index,
+ ucmd.db_page);
+
+ if (err)
+ goto err_free;
+
+ srq->mr.ibmr.lkey = ucmd.lkey;
+ srq->db_index = ucmd.db_index;
+ }
+
+ err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
+ &init_attr->attr, srq);
+
+ if (err && pd->uobject)
+ mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
+ context->db_tab, ucmd.db_index);
+
+ if (err)
+ goto err_free;
+
+ if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
+ mthca_free_srq(to_mdev(pd->device), srq);
+ err = -EFAULT;
+ goto err_free;
+ }
+
+ return &srq->ibsrq;
+
+err_free:
+ kfree(srq);
+
+ return ERR_PTR(err);
+}
+
+static int mthca_destroy_srq(struct ib_srq *srq)
+{
+ struct mthca_ucontext *context;
+
+ if (srq->uobject) {
+ context = to_mucontext(srq->uobject->context);
+
+ mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
+ context->db_tab, to_msrq(srq)->db_index);
+ }
+
+ mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
+ kfree(srq);
+
+ return 0;
+}
+
+static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mthca_create_qp ucmd;
+ struct mthca_qp *qp;
+ int err;
+
+ if (init_attr->create_flags)
+ return ERR_PTR(-EINVAL);
+
+ switch (init_attr->qp_type) {
+ case IB_QPT_RC:
+ case IB_QPT_UC:
+ case IB_QPT_UD:
+ {
+ struct mthca_ucontext *context;
+
+ qp = kmalloc(sizeof *qp, GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
+ if (pd->uobject) {
+ context = to_mucontext(pd->uobject->context);
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
+ kfree(qp);
+ return ERR_PTR(-EFAULT);
+ }
+
+ err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
+ context->db_tab,
+ ucmd.sq_db_index, ucmd.sq_db_page);
+ if (err) {
+ kfree(qp);
+ return ERR_PTR(err);
+ }
+
+ err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
+ context->db_tab,
+ ucmd.rq_db_index, ucmd.rq_db_page);
+ if (err) {
+ mthca_unmap_user_db(to_mdev(pd->device),
+ &context->uar,
+ context->db_tab,
+ ucmd.sq_db_index);
+ kfree(qp);
+ return ERR_PTR(err);
+ }
+
+ qp->mr.ibmr.lkey = ucmd.lkey;
+ qp->sq.db_index = ucmd.sq_db_index;
+ qp->rq.db_index = ucmd.rq_db_index;
+ }
+
+ err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
+ to_mcq(init_attr->send_cq),
+ to_mcq(init_attr->recv_cq),
+ init_attr->qp_type, init_attr->sq_sig_type,
+ &init_attr->cap, qp);
+
+ if (err && pd->uobject) {
+ context = to_mucontext(pd->uobject->context);
+
+ mthca_unmap_user_db(to_mdev(pd->device),
+ &context->uar,
+ context->db_tab,
+ ucmd.sq_db_index);
+ mthca_unmap_user_db(to_mdev(pd->device),
+ &context->uar,
+ context->db_tab,
+ ucmd.rq_db_index);
+ }
+
+ qp->ibqp.qp_num = qp->qpn;
+ break;
+ }
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ {
+ /* Don't allow userspace to create special QPs */
+ if (pd->uobject)
+ return ERR_PTR(-EINVAL);
+
+ qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
+ qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
+
+ err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
+ to_mcq(init_attr->send_cq),
+ to_mcq(init_attr->recv_cq),
+ init_attr->sq_sig_type, &init_attr->cap,
+ qp->ibqp.qp_num, init_attr->port_num,
+ to_msqp(qp));
+ break;
+ }
+ default:
+ /* Don't support raw QPs */
+ return ERR_PTR(-ENOSYS);
+ }
+
+ if (err) {
+ kfree(qp);
+ return ERR_PTR(err);
+ }
+
+ init_attr->cap.max_send_wr = qp->sq.max;
+ init_attr->cap.max_recv_wr = qp->rq.max;
+ init_attr->cap.max_send_sge = qp->sq.max_gs;
+ init_attr->cap.max_recv_sge = qp->rq.max_gs;
+ init_attr->cap.max_inline_data = qp->max_inline_data;
+
+ return &qp->ibqp;
+}
+
+static int mthca_destroy_qp(struct ib_qp *qp)
+{
+ if (qp->uobject) {
+ mthca_unmap_user_db(to_mdev(qp->device),
+ &to_mucontext(qp->uobject->context)->uar,
+ to_mucontext(qp->uobject->context)->db_tab,
+ to_mqp(qp)->sq.db_index);
+ mthca_unmap_user_db(to_mdev(qp->device),
+ &to_mucontext(qp->uobject->context)->uar,
+ to_mucontext(qp->uobject->context)->db_tab,
+ to_mqp(qp)->rq.db_index);
+ }
+ mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
+ kfree(qp);
+ return 0;
+}
+
+static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
+ int comp_vector,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mthca_create_cq ucmd;
+ struct mthca_cq *cq;
+ int nent;
+ int err;
+
+ if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
+ return ERR_PTR(-EINVAL);
+
+ if (context) {
+ if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
+ return ERR_PTR(-EFAULT);
+
+ err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
+ to_mucontext(context)->db_tab,
+ ucmd.set_db_index, ucmd.set_db_page);
+ if (err)
+ return ERR_PTR(err);
+
+ err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
+ to_mucontext(context)->db_tab,
+ ucmd.arm_db_index, ucmd.arm_db_page);
+ if (err)
+ goto err_unmap_set;
+ }
+
+ cq = kmalloc(sizeof *cq, GFP_KERNEL);
+ if (!cq) {
+ err = -ENOMEM;
+ goto err_unmap_arm;
+ }
+
+ if (context) {
+ cq->buf.mr.ibmr.lkey = ucmd.lkey;
+ cq->set_ci_db_index = ucmd.set_db_index;
+ cq->arm_db_index = ucmd.arm_db_index;
+ }
+
+ for (nent = 1; nent <= entries; nent <<= 1)
+ ; /* nothing */
+
+ err = mthca_init_cq(to_mdev(ibdev), nent,
+ context ? to_mucontext(context) : NULL,
+ context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
+ cq);
+ if (err)
+ goto err_free;
+
+ if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
+ mthca_free_cq(to_mdev(ibdev), cq);
+ err = -EFAULT;
+ goto err_free;
+ }
+
+ cq->resize_buf = NULL;
+
+ return &cq->ibcq;
+
+err_free:
+ kfree(cq);
+
+err_unmap_arm:
+ if (context)
+ mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
+ to_mucontext(context)->db_tab, ucmd.arm_db_index);
+
+err_unmap_set:
+ if (context)
+ mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
+ to_mucontext(context)->db_tab, ucmd.set_db_index);
+
+ return ERR_PTR(err);
+}
+
+static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
+ int entries)
+{
+ int ret;
+
+ spin_lock_irq(&cq->lock);
+ if (cq->resize_buf) {
+ ret = -EBUSY;
+ goto unlock;
+ }
+
+ cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
+ if (!cq->resize_buf) {
+ ret = -ENOMEM;
+ goto unlock;
+ }
+
+ cq->resize_buf->state = CQ_RESIZE_ALLOC;
+
+ ret = 0;
+
+unlock:
+ spin_unlock_irq(&cq->lock);
+
+ if (ret)
+ return ret;
+
+ ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
+ if (ret) {
+ spin_lock_irq(&cq->lock);
+ kfree(cq->resize_buf);
+ cq->resize_buf = NULL;
+ spin_unlock_irq(&cq->lock);
+ return ret;
+ }
+
+ cq->resize_buf->cqe = entries - 1;
+
+ spin_lock_irq(&cq->lock);
+ cq->resize_buf->state = CQ_RESIZE_READY;
+ spin_unlock_irq(&cq->lock);
+
+ return 0;
+}
+
+static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
+{
+ struct mthca_dev *dev = to_mdev(ibcq->device);
+ struct mthca_cq *cq = to_mcq(ibcq);
+ struct mthca_resize_cq ucmd;
+ u32 lkey;
+ int ret;
+
+ if (entries < 1 || entries > dev->limits.max_cqes)
+ return -EINVAL;
+
+ mutex_lock(&cq->mutex);
+
+ entries = roundup_pow_of_two(entries + 1);
+ if (entries == ibcq->cqe + 1) {
+ ret = 0;
+ goto out;
+ }
+
+ if (cq->is_kernel) {
+ ret = mthca_alloc_resize_buf(dev, cq, entries);
+ if (ret)
+ goto out;
+ lkey = cq->resize_buf->buf.mr.ibmr.lkey;
+ } else {
+ if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ lkey = ucmd.lkey;
+ }
+
+ ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
+
+ if (ret) {
+ if (cq->resize_buf) {
+ mthca_free_cq_buf(dev, &cq->resize_buf->buf,
+ cq->resize_buf->cqe);
+ kfree(cq->resize_buf);
+ spin_lock_irq(&cq->lock);
+ cq->resize_buf = NULL;
+ spin_unlock_irq(&cq->lock);
+ }
+ goto out;
+ }
+
+ if (cq->is_kernel) {
+ struct mthca_cq_buf tbuf;
+ int tcqe;
+
+ spin_lock_irq(&cq->lock);
+ if (cq->resize_buf->state == CQ_RESIZE_READY) {
+ mthca_cq_resize_copy_cqes(cq);
+ tbuf = cq->buf;
+ tcqe = cq->ibcq.cqe;
+ cq->buf = cq->resize_buf->buf;
+ cq->ibcq.cqe = cq->resize_buf->cqe;
+ } else {
+ tbuf = cq->resize_buf->buf;
+ tcqe = cq->resize_buf->cqe;
+ }
+
+ kfree(cq->resize_buf);
+ cq->resize_buf = NULL;
+ spin_unlock_irq(&cq->lock);
+
+ mthca_free_cq_buf(dev, &tbuf, tcqe);
+ } else
+ ibcq->cqe = entries - 1;
+
+out:
+ mutex_unlock(&cq->mutex);
+
+ return ret;
+}
+
+static int mthca_destroy_cq(struct ib_cq *cq)
+{
+ if (cq->uobject) {
+ mthca_unmap_user_db(to_mdev(cq->device),
+ &to_mucontext(cq->uobject->context)->uar,
+ to_mucontext(cq->uobject->context)->db_tab,
+ to_mcq(cq)->arm_db_index);
+ mthca_unmap_user_db(to_mdev(cq->device),
+ &to_mucontext(cq->uobject->context)->uar,
+ to_mucontext(cq->uobject->context)->db_tab,
+ to_mcq(cq)->set_ci_db_index);
+ }
+ mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
+ kfree(cq);
+
+ return 0;
+}
+
+static inline u32 convert_access(int acc)
+{
+ return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
+ (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
+ (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
+ (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
+ MTHCA_MPT_FLAG_LOCAL_READ;
+}
+
+static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ struct mthca_mr *mr;
+ int err;
+
+ mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ err = mthca_mr_alloc_notrans(to_mdev(pd->device),
+ to_mpd(pd)->pd_num,
+ convert_access(acc), mr);
+
+ if (err) {
+ kfree(mr);
+ return ERR_PTR(err);
+ }
+
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+}
+
+static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
+ struct ib_phys_buf *buffer_list,
+ int num_phys_buf,
+ int acc,
+ u64 *iova_start)
+{
+ struct mthca_mr *mr;
+ u64 *page_list;
+ u64 total_size;
+ unsigned long mask;
+ int shift;
+ int npages;
+ int err;
+ int i, j, n;
+
+ mask = buffer_list[0].addr ^ *iova_start;
+ total_size = 0;
+ for (i = 0; i < num_phys_buf; ++i) {
+ if (i != 0)
+ mask |= buffer_list[i].addr;
+ if (i != num_phys_buf - 1)
+ mask |= buffer_list[i].addr + buffer_list[i].size;
+
+ total_size += buffer_list[i].size;
+ }
+
+ if (mask & ~PAGE_MASK)
+ return ERR_PTR(-EINVAL);
+
+ shift = __ffs(mask | 1 << 31);
+
+ buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
+ buffer_list[0].addr &= ~0ull << shift;
+
+ mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ npages = 0;
+ for (i = 0; i < num_phys_buf; ++i)
+ npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
+
+ if (!npages)
+ return &mr->ibmr;
+
+ page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
+ if (!page_list) {
+ kfree(mr);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ n = 0;
+ for (i = 0; i < num_phys_buf; ++i)
+ for (j = 0;
+ j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
+ ++j)
+ page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
+
+ mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
+ "in PD %x; shift %d, npages %d.\n",
+ (unsigned long long) buffer_list[0].addr,
+ (unsigned long long) *iova_start,
+ to_mpd(pd)->pd_num,
+ shift, npages);
+
+ err = mthca_mr_alloc_phys(to_mdev(pd->device),
+ to_mpd(pd)->pd_num,
+ page_list, shift, npages,
+ *iova_start, total_size,
+ convert_access(acc), mr);
+
+ if (err) {
+ kfree(page_list);
+ kfree(mr);
+ return ERR_PTR(err);
+ }
+
+ kfree(page_list);
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+}
+
+static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt, int acc, struct ib_udata *udata)
+{
+ struct mthca_dev *dev = to_mdev(pd->device);
+ struct scatterlist *sg;
+ struct mthca_mr *mr;
+ struct mthca_reg_mr ucmd;
+ u64 *pages;
+ int shift, n, len;
+ int i, k, entry;
+ int err = 0;
+ int write_mtt_size;
+
+ if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
+ if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
+ mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
+ current->comm);
+ mthca_warn(dev, " Update libmthca to fix this.\n");
+ }
+ ++to_mucontext(pd->uobject->context)->reg_mr_warned;
+ ucmd.mr_attrs = 0;
+ } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
+ return ERR_PTR(-EFAULT);
+
+ mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
+ ucmd.mr_attrs & MTHCA_MR_DMASYNC);
+
+ if (IS_ERR(mr->umem)) {
+ err = PTR_ERR(mr->umem);
+ goto err;
+ }
+
+ shift = ffs(mr->umem->page_size) - 1;
+ n = mr->umem->nmap;
+
+ mr->mtt = mthca_alloc_mtt(dev, n);
+ if (IS_ERR(mr->mtt)) {
+ err = PTR_ERR(mr->mtt);
+ goto err_umem;
+ }
+
+ pages = (u64 *) __get_free_page(GFP_KERNEL);
+ if (!pages) {
+ err = -ENOMEM;
+ goto err_mtt;
+ }
+
+ i = n = 0;
+
+ write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
+
+ for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) {
+ len = sg_dma_len(sg) >> shift;
+ for (k = 0; k < len; ++k) {
+ pages[i++] = sg_dma_address(sg) +
+ mr->umem->page_size * k;
+ /*
+ * Be friendly to write_mtt and pass it chunks
+ * of appropriate size.
+ */
+ if (i == write_mtt_size) {
+ err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
+ if (err)
+ goto mtt_done;
+ n += i;
+ i = 0;
+ }
+ }
+ }
+
+ if (i)
+ err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
+mtt_done:
+ free_page((unsigned long) pages);
+ if (err)
+ goto err_mtt;
+
+ err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
+ convert_access(acc), mr);
+
+ if (err)
+ goto err_mtt;
+
+ return &mr->ibmr;
+
+err_mtt:
+ mthca_free_mtt(dev, mr->mtt);
+
+err_umem:
+ ib_umem_release(mr->umem);
+
+err:
+ kfree(mr);
+ return ERR_PTR(err);
+}
+
+static int mthca_dereg_mr(struct ib_mr *mr)
+{
+ struct mthca_mr *mmr = to_mmr(mr);
+
+ mthca_free_mr(to_mdev(mr->device), mmr);
+ if (mmr->umem)
+ ib_umem_release(mmr->umem);
+ kfree(mmr);
+
+ return 0;
+}
+
+static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr)
+{
+ struct mthca_fmr *fmr;
+ int err;
+
+ fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
+ if (!fmr)
+ return ERR_PTR(-ENOMEM);
+
+ memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
+ err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
+ convert_access(mr_access_flags), fmr);
+
+ if (err) {
+ kfree(fmr);
+ return ERR_PTR(err);
+ }
+
+ return &fmr->ibmr;
+}
+
+static int mthca_dealloc_fmr(struct ib_fmr *fmr)
+{
+ struct mthca_fmr *mfmr = to_mfmr(fmr);
+ int err;
+
+ err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
+ if (err)
+ return err;
+
+ kfree(mfmr);
+ return 0;
+}
+
+static int mthca_unmap_fmr(struct list_head *fmr_list)
+{
+ struct ib_fmr *fmr;
+ int err;
+ struct mthca_dev *mdev = NULL;
+
+ list_for_each_entry(fmr, fmr_list, list) {
+ if (mdev && to_mdev(fmr->device) != mdev)
+ return -EINVAL;
+ mdev = to_mdev(fmr->device);
+ }
+
+ if (!mdev)
+ return 0;
+
+ if (mthca_is_memfree(mdev)) {
+ list_for_each_entry(fmr, fmr_list, list)
+ mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
+
+ wmb();
+ } else
+ list_for_each_entry(fmr, fmr_list, list)
+ mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
+
+ err = mthca_SYNC_TPT(mdev);
+ return err;
+}
+
+static ssize_t show_rev(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mthca_dev *dev =
+ container_of(device, struct mthca_dev, ib_dev.dev);
+ return sprintf(buf, "%x\n", dev->rev_id);
+}
+
+static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mthca_dev *dev =
+ container_of(device, struct mthca_dev, ib_dev.dev);
+ return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
+ (int) (dev->fw_ver >> 16) & 0xffff,
+ (int) dev->fw_ver & 0xffff);
+}
+
+static ssize_t show_hca(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mthca_dev *dev =
+ container_of(device, struct mthca_dev, ib_dev.dev);
+ switch (dev->pdev->device) {
+ case PCI_DEVICE_ID_MELLANOX_TAVOR:
+ return sprintf(buf, "MT23108\n");
+ case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
+ return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
+ case PCI_DEVICE_ID_MELLANOX_ARBEL:
+ return sprintf(buf, "MT25208\n");
+ case PCI_DEVICE_ID_MELLANOX_SINAI:
+ case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
+ return sprintf(buf, "MT25204\n");
+ default:
+ return sprintf(buf, "unknown\n");
+ }
+}
+
+static ssize_t show_board(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mthca_dev *dev =
+ container_of(device, struct mthca_dev, ib_dev.dev);
+ return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, 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 *mthca_dev_attributes[] = {
+ &dev_attr_hw_rev,
+ &dev_attr_fw_ver,
+ &dev_attr_hca_type,
+ &dev_attr_board_id
+};
+
+static int mthca_init_node_data(struct mthca_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 = mthca_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 = mthca_MAD_IFC(dev, 1, 1,
+ 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ if (mthca_is_memfree(dev))
+ dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
+ memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+int mthca_register_device(struct mthca_dev *dev)
+{
+ int ret;
+ int i;
+
+ ret = mthca_init_node_data(dev);
+ if (ret)
+ return ret;
+
+ strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
+ dev->ib_dev.owner = THIS_MODULE;
+
+ dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
+ dev->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_QUERY_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);
+ dev->ib_dev.node_type = RDMA_NODE_IB_CA;
+ dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
+ dev->ib_dev.num_comp_vectors = 1;
+ dev->ib_dev.dma_device = &dev->pdev->dev;
+ dev->ib_dev.query_device = mthca_query_device;
+ dev->ib_dev.query_port = mthca_query_port;
+ dev->ib_dev.modify_device = mthca_modify_device;
+ dev->ib_dev.modify_port = mthca_modify_port;
+ dev->ib_dev.query_pkey = mthca_query_pkey;
+ dev->ib_dev.query_gid = mthca_query_gid;
+ dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
+ dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
+ dev->ib_dev.mmap = mthca_mmap_uar;
+ dev->ib_dev.alloc_pd = mthca_alloc_pd;
+ dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
+ dev->ib_dev.create_ah = mthca_ah_create;
+ dev->ib_dev.query_ah = mthca_ah_query;
+ dev->ib_dev.destroy_ah = mthca_ah_destroy;
+
+ if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
+ dev->ib_dev.create_srq = mthca_create_srq;
+ dev->ib_dev.modify_srq = mthca_modify_srq;
+ dev->ib_dev.query_srq = mthca_query_srq;
+ dev->ib_dev.destroy_srq = mthca_destroy_srq;
+ dev->ib_dev.uverbs_cmd_mask |=
+ (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);
+
+ if (mthca_is_memfree(dev))
+ dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
+ else
+ dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
+ }
+
+ dev->ib_dev.create_qp = mthca_create_qp;
+ dev->ib_dev.modify_qp = mthca_modify_qp;
+ dev->ib_dev.query_qp = mthca_query_qp;
+ dev->ib_dev.destroy_qp = mthca_destroy_qp;
+ dev->ib_dev.create_cq = mthca_create_cq;
+ dev->ib_dev.resize_cq = mthca_resize_cq;
+ dev->ib_dev.destroy_cq = mthca_destroy_cq;
+ dev->ib_dev.poll_cq = mthca_poll_cq;
+ dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
+ dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
+ dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
+ dev->ib_dev.dereg_mr = mthca_dereg_mr;
+
+ if (dev->mthca_flags & MTHCA_FLAG_FMR) {
+ dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
+ dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
+ dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
+ if (mthca_is_memfree(dev))
+ dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
+ else
+ dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
+ }
+
+ dev->ib_dev.attach_mcast = mthca_multicast_attach;
+ dev->ib_dev.detach_mcast = mthca_multicast_detach;
+ dev->ib_dev.process_mad = mthca_process_mad;
+
+ if (mthca_is_memfree(dev)) {
+ dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
+ dev->ib_dev.post_send = mthca_arbel_post_send;
+ dev->ib_dev.post_recv = mthca_arbel_post_receive;
+ } else {
+ dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
+ dev->ib_dev.post_send = mthca_tavor_post_send;
+ dev->ib_dev.post_recv = mthca_tavor_post_receive;
+ }
+
+ mutex_init(&dev->cap_mask_mutex);
+
+ ret = ib_register_device(&dev->ib_dev, NULL);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
+ ret = device_create_file(&dev->ib_dev.dev,
+ mthca_dev_attributes[i]);
+ if (ret) {
+ ib_unregister_device(&dev->ib_dev);
+ return ret;
+ }
+ }
+
+ mthca_start_catas_poll(dev);
+
+ return 0;
+}
+
+void mthca_unregister_device(struct mthca_dev *dev)
+{
+ mthca_stop_catas_poll(dev);
+ ib_unregister_device(&dev->ib_dev);
+}
Code Review / kvmfornfv.git / blobdiff