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Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_provider.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_provider.c1178
1 files changed, 1178 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
new file mode 100644
index 0000000000..e1325f2927
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -0,0 +1,1178 @@
+/*
+ * 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 <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 int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
+ struct ib_udata *uhw)
+{
+ struct ib_smp *in_mad;
+ struct ib_smp *out_mad;
+ 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;
+
+ ib_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;
+ 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;
+ struct ib_smp *out_mad;
+ 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 */
+
+ ib_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;
+ struct ib_smp *out_mad;
+ 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;
+
+ ib_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;
+ struct ib_smp *out_mad;
+ 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;
+
+ ib_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);
+
+ ib_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 int mthca_create_qp(struct ib_qp *ibqp,
+ 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 = to_mqp(ibqp);
+ struct mthca_dev *dev = to_mdev(ibqp->device);
+ int err;
+
+ if (init_attr->create_flags)
+ return -EOPNOTSUPP;
+
+ switch (init_attr->qp_type) {
+ case IB_QPT_RC:
+ case IB_QPT_UC:
+ case IB_QPT_UD:
+ {
+ if (udata) {
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
+ return -EFAULT;
+
+ err = mthca_map_user_db(dev, &context->uar,
+ context->db_tab,
+ ucmd.sq_db_index,
+ ucmd.sq_db_page);
+ if (err)
+ return err;
+
+ err = mthca_map_user_db(dev, &context->uar,
+ context->db_tab,
+ ucmd.rq_db_index,
+ ucmd.rq_db_page);
+ if (err) {
+ mthca_unmap_user_db(dev, &context->uar,
+ context->db_tab,
+ ucmd.sq_db_index);
+ return 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(dev, to_mpd(ibqp->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(dev, &context->uar, context->db_tab,
+ ucmd.sq_db_index);
+ mthca_unmap_user_db(dev, &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->sqp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
+ if (!qp->sqp)
+ return -ENOMEM;
+
+ qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
+
+ err = mthca_alloc_sqp(dev, to_mpd(ibqp->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 -EOPNOTSUPP;
+ }
+
+ if (err) {
+ kfree(qp->sqp);
+ return 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 0;
+}
+
+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);
+ 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;
+ struct ib_smp *out_mad;
+ 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;
+
+ ib_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_qp, mthca_qp, ibqp),
+ 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);
+}