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1203 lines
30 KiB
1203 lines
30 KiB
/* |
|
* 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. |
|
* |
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* This software is available to you under a choice of one of two |
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* 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 |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
|
* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
|
* copyright notice, this list of conditions and the following |
|
* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* 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 |
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* 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 |
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* SOFTWARE. |
|
*/ |
|
|
|
#include <rdma/ib_smi.h> |
|
#include <rdma/ib_umem.h> |
|
#include <rdma/ib_user_verbs.h> |
|
#include <rdma/uverbs_ioctl.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 <rdma/mthca-abi.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_udata *uhw) |
|
{ |
|
struct ib_smp *in_mad = NULL; |
|
struct ib_smp *out_mad = NULL; |
|
int err = -ENOMEM; |
|
struct mthca_dev *mdev = to_mdev(ibdev); |
|
|
|
if (uhw->inlen || uhw->outlen) |
|
return -EINVAL; |
|
|
|
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_send_sge = mdev->limits.max_sg; |
|
props->max_recv_sge = mdev->limits.max_sg; |
|
props->max_sge_rd = 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; |
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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; |
|
|
|
err = 0; |
|
out: |
|
kfree(in_mad); |
|
kfree(out_mad); |
|
return err; |
|
} |
|
|
|
static int mthca_query_port(struct ib_device *ibdev, |
|
u32 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; |
|
|
|
/* props being zeroed by the caller, avoid zeroing it here */ |
|
|
|
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, |
|
IB_DEVICE_NODE_DESC_MAX); |
|
mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mthca_modify_port(struct ib_device *ibdev, |
|
u32 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 = ib_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, |
|
u32 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, u32 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 int mthca_alloc_ucontext(struct ib_ucontext *uctx, |
|
struct ib_udata *udata) |
|
{ |
|
struct ib_device *ibdev = uctx->device; |
|
struct mthca_alloc_ucontext_resp uresp = {}; |
|
struct mthca_ucontext *context = to_mucontext(uctx); |
|
int err; |
|
|
|
if (!(to_mdev(ibdev)->active)) |
|
return -EAGAIN; |
|
|
|
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; |
|
|
|
err = mthca_uar_alloc(to_mdev(ibdev), &context->uar); |
|
if (err) |
|
return 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); |
|
return 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); |
|
return -EFAULT; |
|
} |
|
|
|
context->reg_mr_warned = 0; |
|
|
|
return 0; |
|
} |
|
|
|
static void 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); |
|
} |
|
|
|
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 int mthca_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) |
|
{ |
|
struct ib_device *ibdev = ibpd->device; |
|
struct mthca_pd *pd = to_mpd(ibpd); |
|
int err; |
|
|
|
err = mthca_pd_alloc(to_mdev(ibdev), !udata, pd); |
|
if (err) |
|
return err; |
|
|
|
if (udata) { |
|
if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) { |
|
mthca_pd_free(to_mdev(ibdev), pd); |
|
return -EFAULT; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mthca_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) |
|
{ |
|
mthca_pd_free(to_mdev(pd->device), to_mpd(pd)); |
|
return 0; |
|
} |
|
|
|
static int mthca_ah_create(struct ib_ah *ibah, |
|
struct rdma_ah_init_attr *init_attr, |
|
struct ib_udata *udata) |
|
|
|
{ |
|
struct mthca_ah *ah = to_mah(ibah); |
|
|
|
return mthca_create_ah(to_mdev(ibah->device), to_mpd(ibah->pd), |
|
init_attr->ah_attr, ah); |
|
} |
|
|
|
static int mthca_ah_destroy(struct ib_ah *ah, u32 flags) |
|
{ |
|
mthca_destroy_ah(to_mdev(ah->device), to_mah(ah)); |
|
return 0; |
|
} |
|
|
|
static int mthca_create_srq(struct ib_srq *ibsrq, |
|
struct ib_srq_init_attr *init_attr, |
|
struct ib_udata *udata) |
|
{ |
|
struct mthca_create_srq ucmd; |
|
struct mthca_ucontext *context = rdma_udata_to_drv_context( |
|
udata, struct mthca_ucontext, ibucontext); |
|
struct mthca_srq *srq = to_msrq(ibsrq); |
|
int err; |
|
|
|
if (init_attr->srq_type != IB_SRQT_BASIC) |
|
return -EOPNOTSUPP; |
|
|
|
if (udata) { |
|
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) |
|
return -EFAULT; |
|
|
|
err = mthca_map_user_db(to_mdev(ibsrq->device), &context->uar, |
|
context->db_tab, ucmd.db_index, |
|
ucmd.db_page); |
|
|
|
if (err) |
|
return err; |
|
|
|
srq->mr.ibmr.lkey = ucmd.lkey; |
|
srq->db_index = ucmd.db_index; |
|
} |
|
|
|
err = mthca_alloc_srq(to_mdev(ibsrq->device), to_mpd(ibsrq->pd), |
|
&init_attr->attr, srq, udata); |
|
|
|
if (err && udata) |
|
mthca_unmap_user_db(to_mdev(ibsrq->device), &context->uar, |
|
context->db_tab, ucmd.db_index); |
|
|
|
if (err) |
|
return err; |
|
|
|
if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof(__u32))) { |
|
mthca_free_srq(to_mdev(ibsrq->device), srq); |
|
return -EFAULT; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mthca_destroy_srq(struct ib_srq *srq, struct ib_udata *udata) |
|
{ |
|
if (udata) { |
|
struct mthca_ucontext *context = |
|
rdma_udata_to_drv_context( |
|
udata, |
|
struct mthca_ucontext, |
|
ibucontext); |
|
|
|
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)); |
|
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_ucontext *context = rdma_udata_to_drv_context( |
|
udata, struct mthca_ucontext, ibucontext); |
|
struct mthca_create_qp ucmd; |
|
struct mthca_qp *qp; |
|
int err; |
|
|
|
if (init_attr->create_flags) |
|
return ERR_PTR(-EOPNOTSUPP); |
|
|
|
switch (init_attr->qp_type) { |
|
case IB_QPT_RC: |
|
case IB_QPT_UC: |
|
case IB_QPT_UD: |
|
{ |
|
qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
|
if (!qp) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
if (udata) { |
|
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, udata); |
|
|
|
if (err && udata) { |
|
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: |
|
{ |
|
qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
|
if (!qp) |
|
return ERR_PTR(-ENOMEM); |
|
qp->sqp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL); |
|
if (!qp->sqp) { |
|
kfree(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, |
|
qp, udata); |
|
break; |
|
} |
|
default: |
|
/* Don't support raw QPs */ |
|
return ERR_PTR(-EOPNOTSUPP); |
|
} |
|
|
|
if (err) { |
|
kfree(qp->sqp); |
|
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, struct ib_udata *udata) |
|
{ |
|
if (udata) { |
|
struct mthca_ucontext *context = |
|
rdma_udata_to_drv_context( |
|
udata, |
|
struct mthca_ucontext, |
|
ibucontext); |
|
|
|
mthca_unmap_user_db(to_mdev(qp->device), |
|
&context->uar, |
|
context->db_tab, |
|
to_mqp(qp)->sq.db_index); |
|
mthca_unmap_user_db(to_mdev(qp->device), |
|
&context->uar, |
|
context->db_tab, |
|
to_mqp(qp)->rq.db_index); |
|
} |
|
mthca_free_qp(to_mdev(qp->device), to_mqp(qp)); |
|
kfree(to_mqp(qp)->sqp); |
|
kfree(to_mqp(qp)); |
|
return 0; |
|
} |
|
|
|
static int mthca_create_cq(struct ib_cq *ibcq, |
|
const struct ib_cq_init_attr *attr, |
|
struct ib_udata *udata) |
|
{ |
|
struct ib_device *ibdev = ibcq->device; |
|
int entries = attr->cqe; |
|
struct mthca_create_cq ucmd; |
|
struct mthca_cq *cq; |
|
int nent; |
|
int err; |
|
struct mthca_ucontext *context = rdma_udata_to_drv_context( |
|
udata, struct mthca_ucontext, ibucontext); |
|
|
|
if (attr->flags) |
|
return -EOPNOTSUPP; |
|
|
|
if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes) |
|
return -EINVAL; |
|
|
|
if (udata) { |
|
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) |
|
return -EFAULT; |
|
|
|
err = mthca_map_user_db(to_mdev(ibdev), &context->uar, |
|
context->db_tab, ucmd.set_db_index, |
|
ucmd.set_db_page); |
|
if (err) |
|
return err; |
|
|
|
err = mthca_map_user_db(to_mdev(ibdev), &context->uar, |
|
context->db_tab, ucmd.arm_db_index, |
|
ucmd.arm_db_page); |
|
if (err) |
|
goto err_unmap_set; |
|
} |
|
|
|
cq = to_mcq(ibcq); |
|
|
|
if (udata) { |
|
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, |
|
udata ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num, |
|
cq); |
|
if (err) |
|
goto err_unmap_arm; |
|
|
|
if (udata && ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) { |
|
mthca_free_cq(to_mdev(ibdev), cq); |
|
err = -EFAULT; |
|
goto err_unmap_arm; |
|
} |
|
|
|
cq->resize_buf = NULL; |
|
|
|
return 0; |
|
|
|
err_unmap_arm: |
|
if (udata) |
|
mthca_unmap_user_db(to_mdev(ibdev), &context->uar, |
|
context->db_tab, ucmd.arm_db_index); |
|
|
|
err_unmap_set: |
|
if (udata) |
|
mthca_unmap_user_db(to_mdev(ibdev), &context->uar, |
|
context->db_tab, ucmd.set_db_index); |
|
|
|
return 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, struct ib_udata *udata) |
|
{ |
|
if (udata) { |
|
struct mthca_ucontext *context = |
|
rdma_udata_to_drv_context( |
|
udata, |
|
struct mthca_ucontext, |
|
ibucontext); |
|
|
|
mthca_unmap_user_db(to_mdev(cq->device), |
|
&context->uar, |
|
context->db_tab, |
|
to_mcq(cq)->arm_db_index); |
|
mthca_unmap_user_db(to_mdev(cq->device), |
|
&context->uar, |
|
context->db_tab, |
|
to_mcq(cq)->set_ci_db_index); |
|
} |
|
mthca_free_cq(to_mdev(cq->device), to_mcq(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_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 ib_block_iter biter; |
|
struct mthca_ucontext *context = rdma_udata_to_drv_context( |
|
udata, struct mthca_ucontext, ibucontext); |
|
struct mthca_mr *mr; |
|
struct mthca_reg_mr ucmd; |
|
u64 *pages; |
|
int n, i; |
|
int err = 0; |
|
int write_mtt_size; |
|
|
|
if (udata->inlen < sizeof ucmd) { |
|
if (!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"); |
|
} |
|
++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->device, start, length, acc); |
|
if (IS_ERR(mr->umem)) { |
|
err = PTR_ERR(mr->umem); |
|
goto err; |
|
} |
|
|
|
n = ib_umem_num_dma_blocks(mr->umem, PAGE_SIZE); |
|
|
|
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)); |
|
|
|
rdma_umem_for_each_dma_block(mr->umem, &biter, PAGE_SIZE) { |
|
pages[i++] = rdma_block_iter_dma_address(&biter); |
|
|
|
/* |
|
* 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, PAGE_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 ib_udata *udata) |
|
{ |
|
struct mthca_mr *mmr = to_mmr(mr); |
|
|
|
mthca_free_mr(to_mdev(mr->device), mmr); |
|
ib_umem_release(mmr->umem); |
|
kfree(mmr); |
|
|
|
return 0; |
|
} |
|
|
|
static ssize_t hw_rev_show(struct device *device, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct mthca_dev *dev = |
|
rdma_device_to_drv_device(device, struct mthca_dev, ib_dev); |
|
|
|
return sysfs_emit(buf, "%x\n", dev->rev_id); |
|
} |
|
static DEVICE_ATTR_RO(hw_rev); |
|
|
|
static const char *hca_type_string(int hca_type) |
|
{ |
|
switch (hca_type) { |
|
case PCI_DEVICE_ID_MELLANOX_TAVOR: |
|
return "MT23108"; |
|
case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT: |
|
return "MT25208 (MT23108 compat mode)"; |
|
case PCI_DEVICE_ID_MELLANOX_ARBEL: |
|
return "MT25208"; |
|
case PCI_DEVICE_ID_MELLANOX_SINAI: |
|
case PCI_DEVICE_ID_MELLANOX_SINAI_OLD: |
|
return "MT25204"; |
|
} |
|
|
|
return "unknown"; |
|
} |
|
|
|
static ssize_t hca_type_show(struct device *device, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct mthca_dev *dev = |
|
rdma_device_to_drv_device(device, struct mthca_dev, ib_dev); |
|
|
|
return sysfs_emit(buf, "%s\n", hca_type_string(dev->pdev->device)); |
|
} |
|
static DEVICE_ATTR_RO(hca_type); |
|
|
|
static ssize_t board_id_show(struct device *device, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct mthca_dev *dev = |
|
rdma_device_to_drv_device(device, struct mthca_dev, ib_dev); |
|
|
|
return sysfs_emit(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id); |
|
} |
|
static DEVICE_ATTR_RO(board_id); |
|
|
|
static struct attribute *mthca_dev_attributes[] = { |
|
&dev_attr_hw_rev.attr, |
|
&dev_attr_hca_type.attr, |
|
&dev_attr_board_id.attr, |
|
NULL |
|
}; |
|
|
|
static const struct attribute_group mthca_attr_group = { |
|
.attrs = mthca_dev_attributes, |
|
}; |
|
|
|
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, IB_DEVICE_NODE_DESC_MAX); |
|
|
|
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; |
|
} |
|
|
|
static int mthca_port_immutable(struct ib_device *ibdev, u32 port_num, |
|
struct ib_port_immutable *immutable) |
|
{ |
|
struct ib_port_attr attr; |
|
int err; |
|
|
|
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; |
|
|
|
err = ib_query_port(ibdev, port_num, &attr); |
|
if (err) |
|
return err; |
|
|
|
immutable->pkey_tbl_len = attr.pkey_tbl_len; |
|
immutable->gid_tbl_len = attr.gid_tbl_len; |
|
immutable->max_mad_size = IB_MGMT_MAD_SIZE; |
|
|
|
return 0; |
|
} |
|
|
|
static void get_dev_fw_str(struct ib_device *device, char *str) |
|
{ |
|
struct mthca_dev *dev = |
|
container_of(device, struct mthca_dev, ib_dev); |
|
snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d", |
|
(int) (dev->fw_ver >> 32), |
|
(int) (dev->fw_ver >> 16) & 0xffff, |
|
(int) dev->fw_ver & 0xffff); |
|
} |
|
|
|
static const struct ib_device_ops mthca_dev_ops = { |
|
.owner = THIS_MODULE, |
|
.driver_id = RDMA_DRIVER_MTHCA, |
|
.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION, |
|
.uverbs_no_driver_id_binding = 1, |
|
|
|
.alloc_pd = mthca_alloc_pd, |
|
.alloc_ucontext = mthca_alloc_ucontext, |
|
.attach_mcast = mthca_multicast_attach, |
|
.create_ah = mthca_ah_create, |
|
.create_cq = mthca_create_cq, |
|
.create_qp = mthca_create_qp, |
|
.dealloc_pd = mthca_dealloc_pd, |
|
.dealloc_ucontext = mthca_dealloc_ucontext, |
|
.dereg_mr = mthca_dereg_mr, |
|
.destroy_ah = mthca_ah_destroy, |
|
.destroy_cq = mthca_destroy_cq, |
|
.destroy_qp = mthca_destroy_qp, |
|
.detach_mcast = mthca_multicast_detach, |
|
.device_group = &mthca_attr_group, |
|
.get_dev_fw_str = get_dev_fw_str, |
|
.get_dma_mr = mthca_get_dma_mr, |
|
.get_port_immutable = mthca_port_immutable, |
|
.mmap = mthca_mmap_uar, |
|
.modify_device = mthca_modify_device, |
|
.modify_port = mthca_modify_port, |
|
.modify_qp = mthca_modify_qp, |
|
.poll_cq = mthca_poll_cq, |
|
.process_mad = mthca_process_mad, |
|
.query_ah = mthca_ah_query, |
|
.query_device = mthca_query_device, |
|
.query_gid = mthca_query_gid, |
|
.query_pkey = mthca_query_pkey, |
|
.query_port = mthca_query_port, |
|
.query_qp = mthca_query_qp, |
|
.reg_user_mr = mthca_reg_user_mr, |
|
.resize_cq = mthca_resize_cq, |
|
|
|
INIT_RDMA_OBJ_SIZE(ib_ah, mthca_ah, ibah), |
|
INIT_RDMA_OBJ_SIZE(ib_cq, mthca_cq, ibcq), |
|
INIT_RDMA_OBJ_SIZE(ib_pd, mthca_pd, ibpd), |
|
INIT_RDMA_OBJ_SIZE(ib_ucontext, mthca_ucontext, ibucontext), |
|
}; |
|
|
|
static const struct ib_device_ops mthca_dev_arbel_srq_ops = { |
|
.create_srq = mthca_create_srq, |
|
.destroy_srq = mthca_destroy_srq, |
|
.modify_srq = mthca_modify_srq, |
|
.post_srq_recv = mthca_arbel_post_srq_recv, |
|
.query_srq = mthca_query_srq, |
|
|
|
INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq), |
|
}; |
|
|
|
static const struct ib_device_ops mthca_dev_tavor_srq_ops = { |
|
.create_srq = mthca_create_srq, |
|
.destroy_srq = mthca_destroy_srq, |
|
.modify_srq = mthca_modify_srq, |
|
.post_srq_recv = mthca_tavor_post_srq_recv, |
|
.query_srq = mthca_query_srq, |
|
|
|
INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq), |
|
}; |
|
|
|
static const struct ib_device_ops mthca_dev_arbel_ops = { |
|
.post_recv = mthca_arbel_post_receive, |
|
.post_send = mthca_arbel_post_send, |
|
.req_notify_cq = mthca_arbel_arm_cq, |
|
}; |
|
|
|
static const struct ib_device_ops mthca_dev_tavor_ops = { |
|
.post_recv = mthca_tavor_post_receive, |
|
.post_send = mthca_tavor_post_send, |
|
.req_notify_cq = mthca_tavor_arm_cq, |
|
}; |
|
|
|
int mthca_register_device(struct mthca_dev *dev) |
|
{ |
|
int ret; |
|
|
|
ret = mthca_init_node_data(dev); |
|
if (ret) |
|
return ret; |
|
|
|
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.dev.parent = &dev->pdev->dev; |
|
|
|
if (dev->mthca_flags & MTHCA_FLAG_SRQ) { |
|
if (mthca_is_memfree(dev)) |
|
ib_set_device_ops(&dev->ib_dev, |
|
&mthca_dev_arbel_srq_ops); |
|
else |
|
ib_set_device_ops(&dev->ib_dev, |
|
&mthca_dev_tavor_srq_ops); |
|
} |
|
|
|
ib_set_device_ops(&dev->ib_dev, &mthca_dev_ops); |
|
|
|
if (mthca_is_memfree(dev)) |
|
ib_set_device_ops(&dev->ib_dev, &mthca_dev_arbel_ops); |
|
else |
|
ib_set_device_ops(&dev->ib_dev, &mthca_dev_tavor_ops); |
|
|
|
mutex_init(&dev->cap_mask_mutex); |
|
|
|
ret = ib_register_device(&dev->ib_dev, "mthca%d", &dev->pdev->dev); |
|
if (ret) |
|
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); |
|
}
|
|
|