2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include "rxe_queue.h"
38 static int rxe_query_device(struct ib_device *dev,
39 struct ib_device_attr *attr,
42 struct rxe_dev *rxe = to_rdev(dev);
44 if (uhw->inlen || uhw->outlen)
51 static void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed,
55 *active_width = IB_WIDTH_1X;
56 *active_speed = IB_SPEED_SDR;
57 } else if (speed <= 10000) {
58 *active_width = IB_WIDTH_1X;
59 *active_speed = IB_SPEED_FDR10;
60 } else if (speed <= 20000) {
61 *active_width = IB_WIDTH_4X;
62 *active_speed = IB_SPEED_DDR;
63 } else if (speed <= 30000) {
64 *active_width = IB_WIDTH_4X;
65 *active_speed = IB_SPEED_QDR;
66 } else if (speed <= 40000) {
67 *active_width = IB_WIDTH_4X;
68 *active_speed = IB_SPEED_FDR10;
70 *active_width = IB_WIDTH_4X;
71 *active_speed = IB_SPEED_EDR;
75 static int rxe_query_port(struct ib_device *dev,
76 u8 port_num, struct ib_port_attr *attr)
78 struct rxe_dev *rxe = to_rdev(dev);
79 struct rxe_port *port;
82 if (unlikely(port_num != 1)) {
83 pr_warn("invalid port_number %d\n", port_num);
91 mutex_lock(&rxe->usdev_lock);
92 if (rxe->ndev->ethtool_ops->get_link_ksettings) {
93 struct ethtool_link_ksettings ks;
95 rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks);
96 speed = ks.base.speed;
97 } else if (rxe->ndev->ethtool_ops->get_settings) {
98 struct ethtool_cmd cmd;
100 rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd);
103 pr_warn("%s speed is unknown, defaulting to 1000\n", rxe->ndev->name);
106 rxe_eth_speed_to_ib_speed(speed, &attr->active_speed, &attr->active_width);
107 mutex_unlock(&rxe->usdev_lock);
115 static int rxe_query_gid(struct ib_device *device,
116 u8 port_num, int index, union ib_gid *gid)
120 if (index > RXE_PORT_GID_TBL_LEN)
123 ret = ib_get_cached_gid(device, port_num, index, gid, NULL);
124 if (ret == -EAGAIN) {
125 memcpy(gid, &zgid, sizeof(*gid));
132 static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int
133 index, const union ib_gid *gid,
134 const struct ib_gid_attr *attr, void **context)
136 if (index >= RXE_PORT_GID_TBL_LEN)
141 static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int
142 index, void **context)
144 if (index >= RXE_PORT_GID_TBL_LEN)
149 static struct net_device *rxe_get_netdev(struct ib_device *device,
152 struct rxe_dev *rxe = to_rdev(device);
162 static int rxe_query_pkey(struct ib_device *device,
163 u8 port_num, u16 index, u16 *pkey)
165 struct rxe_dev *rxe = to_rdev(device);
166 struct rxe_port *port;
168 if (unlikely(port_num != 1)) {
169 dev_warn(device->dma_device, "invalid port_num = %d\n",
176 if (unlikely(index >= port->attr.pkey_tbl_len)) {
177 dev_warn(device->dma_device, "invalid index = %d\n",
182 *pkey = port->pkey_tbl[index];
189 static int rxe_modify_device(struct ib_device *dev,
190 int mask, struct ib_device_modify *attr)
192 struct rxe_dev *rxe = to_rdev(dev);
194 if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID)
195 rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid);
197 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
198 memcpy(rxe->ib_dev.node_desc,
199 attr->node_desc, sizeof(rxe->ib_dev.node_desc));
205 static int rxe_modify_port(struct ib_device *dev,
206 u8 port_num, int mask, struct ib_port_modify *attr)
208 struct rxe_dev *rxe = to_rdev(dev);
209 struct rxe_port *port;
211 if (unlikely(port_num != 1)) {
212 pr_warn("invalid port_num = %d\n", port_num);
218 port->attr.port_cap_flags |= attr->set_port_cap_mask;
219 port->attr.port_cap_flags &= ~attr->clr_port_cap_mask;
221 if (mask & IB_PORT_RESET_QKEY_CNTR)
222 port->attr.qkey_viol_cntr = 0;
230 static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev,
233 struct rxe_dev *rxe = to_rdev(dev);
235 return rxe->ifc_ops->link_layer(rxe, port_num);
238 static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev,
239 struct ib_udata *udata)
241 struct rxe_dev *rxe = to_rdev(dev);
242 struct rxe_ucontext *uc;
244 uc = rxe_alloc(&rxe->uc_pool);
245 return uc ? &uc->ibuc : ERR_PTR(-ENOMEM);
248 static int rxe_dealloc_ucontext(struct ib_ucontext *ibuc)
250 struct rxe_ucontext *uc = to_ruc(ibuc);
256 static int rxe_port_immutable(struct ib_device *dev, u8 port_num,
257 struct ib_port_immutable *immutable)
260 struct ib_port_attr attr;
262 err = rxe_query_port(dev, port_num, &attr);
266 immutable->pkey_tbl_len = attr.pkey_tbl_len;
267 immutable->gid_tbl_len = attr.gid_tbl_len;
268 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
269 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
274 static struct ib_pd *rxe_alloc_pd(struct ib_device *dev,
275 struct ib_ucontext *context,
276 struct ib_udata *udata)
278 struct rxe_dev *rxe = to_rdev(dev);
281 pd = rxe_alloc(&rxe->pd_pool);
282 return pd ? &pd->ibpd : ERR_PTR(-ENOMEM);
285 static int rxe_dealloc_pd(struct ib_pd *ibpd)
287 struct rxe_pd *pd = to_rpd(ibpd);
293 static int rxe_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr,
298 struct ib_gid_attr sgid_attr;
300 err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num,
301 attr->grh.sgid_index, &sgid,
304 pr_err("Failed to query sgid. err = %d\n", err);
308 err = rxe_av_from_attr(rxe, attr->port_num, av, attr);
310 err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);
313 dev_put(sgid_attr.ndev);
317 static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
320 struct rxe_dev *rxe = to_rdev(ibpd->device);
321 struct rxe_pd *pd = to_rpd(ibpd);
324 err = rxe_av_chk_attr(rxe, attr);
328 ah = rxe_alloc(&rxe->ah_pool);
337 err = rxe_init_av(rxe, attr, &ah->av);
350 static int rxe_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
353 struct rxe_dev *rxe = to_rdev(ibah->device);
354 struct rxe_ah *ah = to_rah(ibah);
356 err = rxe_av_chk_attr(rxe, attr);
360 err = rxe_init_av(rxe, attr, &ah->av);
367 static int rxe_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
369 struct rxe_dev *rxe = to_rdev(ibah->device);
370 struct rxe_ah *ah = to_rah(ibah);
372 rxe_av_to_attr(rxe, &ah->av, attr);
376 static int rxe_destroy_ah(struct ib_ah *ibah)
378 struct rxe_ah *ah = to_rah(ibah);
380 rxe_drop_ref(ah->pd);
385 static int post_one_recv(struct rxe_rq *rq, struct ib_recv_wr *ibwr)
390 struct rxe_recv_wqe *recv_wqe;
391 int num_sge = ibwr->num_sge;
393 if (unlikely(queue_full(rq->queue))) {
398 if (unlikely(num_sge > rq->max_sge)) {
404 for (i = 0; i < num_sge; i++)
405 length += ibwr->sg_list[i].length;
407 recv_wqe = producer_addr(rq->queue);
408 recv_wqe->wr_id = ibwr->wr_id;
409 recv_wqe->num_sge = num_sge;
411 memcpy(recv_wqe->dma.sge, ibwr->sg_list,
412 num_sge * sizeof(struct ib_sge));
414 recv_wqe->dma.length = length;
415 recv_wqe->dma.resid = length;
416 recv_wqe->dma.num_sge = num_sge;
417 recv_wqe->dma.cur_sge = 0;
418 recv_wqe->dma.sge_offset = 0;
420 /* make sure all changes to the work queue are written before we
421 * update the producer pointer
425 advance_producer(rq->queue);
432 static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd,
433 struct ib_srq_init_attr *init,
434 struct ib_udata *udata)
437 struct rxe_dev *rxe = to_rdev(ibpd->device);
438 struct rxe_pd *pd = to_rpd(ibpd);
440 struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
442 err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK);
446 srq = rxe_alloc(&rxe->srq_pool);
456 err = rxe_srq_from_init(rxe, srq, init, context, udata);
470 static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
471 enum ib_srq_attr_mask mask,
472 struct ib_udata *udata)
475 struct rxe_srq *srq = to_rsrq(ibsrq);
476 struct rxe_dev *rxe = to_rdev(ibsrq->device);
478 err = rxe_srq_chk_attr(rxe, srq, attr, mask);
482 err = rxe_srq_from_attr(rxe, srq, attr, mask, udata);
492 static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
494 struct rxe_srq *srq = to_rsrq(ibsrq);
499 attr->max_wr = srq->rq.queue->buf->index_mask;
500 attr->max_sge = srq->rq.max_sge;
501 attr->srq_limit = srq->limit;
505 static int rxe_destroy_srq(struct ib_srq *ibsrq)
507 struct rxe_srq *srq = to_rsrq(ibsrq);
510 rxe_queue_cleanup(srq->rq.queue);
512 rxe_drop_ref(srq->pd);
519 static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
520 struct ib_recv_wr **bad_wr)
524 struct rxe_srq *srq = to_rsrq(ibsrq);
526 spin_lock_irqsave(&srq->rq.producer_lock, flags);
529 err = post_one_recv(&srq->rq, wr);
535 spin_unlock_irqrestore(&srq->rq.producer_lock, flags);
543 static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd,
544 struct ib_qp_init_attr *init,
545 struct ib_udata *udata)
548 struct rxe_dev *rxe = to_rdev(ibpd->device);
549 struct rxe_pd *pd = to_rpd(ibpd);
552 err = rxe_qp_chk_init(rxe, init);
556 qp = rxe_alloc(&rxe->qp_pool);
572 err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd);
585 static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
586 int mask, struct ib_udata *udata)
589 struct rxe_dev *rxe = to_rdev(ibqp->device);
590 struct rxe_qp *qp = to_rqp(ibqp);
592 err = rxe_qp_chk_attr(rxe, qp, attr, mask);
596 err = rxe_qp_from_attr(qp, attr, mask, udata);
606 static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
607 int mask, struct ib_qp_init_attr *init)
609 struct rxe_qp *qp = to_rqp(ibqp);
611 rxe_qp_to_init(qp, init);
612 rxe_qp_to_attr(qp, attr, mask);
617 static int rxe_destroy_qp(struct ib_qp *ibqp)
619 struct rxe_qp *qp = to_rqp(ibqp);
627 static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr,
628 unsigned int mask, unsigned int length)
630 int num_sge = ibwr->num_sge;
631 struct rxe_sq *sq = &qp->sq;
633 if (unlikely(num_sge > sq->max_sge))
636 if (unlikely(mask & WR_ATOMIC_MASK)) {
640 if (atomic_wr(ibwr)->remote_addr & 0x7)
644 if (unlikely((ibwr->send_flags & IB_SEND_INLINE) &&
645 (length > sq->max_inline)))
654 static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr,
655 struct ib_send_wr *ibwr)
657 wr->wr_id = ibwr->wr_id;
658 wr->num_sge = ibwr->num_sge;
659 wr->opcode = ibwr->opcode;
660 wr->send_flags = ibwr->send_flags;
662 if (qp_type(qp) == IB_QPT_UD ||
663 qp_type(qp) == IB_QPT_SMI ||
664 qp_type(qp) == IB_QPT_GSI) {
665 wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn;
666 wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey;
667 if (qp_type(qp) == IB_QPT_GSI)
668 wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index;
669 if (wr->opcode == IB_WR_SEND_WITH_IMM)
670 wr->ex.imm_data = ibwr->ex.imm_data;
672 switch (wr->opcode) {
673 case IB_WR_RDMA_WRITE_WITH_IMM:
674 wr->ex.imm_data = ibwr->ex.imm_data;
675 case IB_WR_RDMA_READ:
676 case IB_WR_RDMA_WRITE:
677 wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr;
678 wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey;
680 case IB_WR_SEND_WITH_IMM:
681 wr->ex.imm_data = ibwr->ex.imm_data;
683 case IB_WR_SEND_WITH_INV:
684 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
686 case IB_WR_ATOMIC_CMP_AND_SWP:
687 case IB_WR_ATOMIC_FETCH_AND_ADD:
688 wr->wr.atomic.remote_addr =
689 atomic_wr(ibwr)->remote_addr;
690 wr->wr.atomic.compare_add =
691 atomic_wr(ibwr)->compare_add;
692 wr->wr.atomic.swap = atomic_wr(ibwr)->swap;
693 wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey;
695 case IB_WR_LOCAL_INV:
696 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
699 wr->wr.reg.mr = reg_wr(ibwr)->mr;
700 wr->wr.reg.key = reg_wr(ibwr)->key;
701 wr->wr.reg.access = reg_wr(ibwr)->access;
709 static int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr,
710 unsigned int mask, unsigned int length,
711 struct rxe_send_wqe *wqe)
713 int num_sge = ibwr->num_sge;
718 init_send_wr(qp, &wqe->wr, ibwr);
720 if (qp_type(qp) == IB_QPT_UD ||
721 qp_type(qp) == IB_QPT_SMI ||
722 qp_type(qp) == IB_QPT_GSI)
723 memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av));
725 if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) {
726 p = wqe->dma.inline_data;
729 for (i = 0; i < num_sge; i++, sge++) {
730 if (qp->is_user && copy_from_user(p, (__user void *)
731 (uintptr_t)sge->addr, sge->length))
734 else if (!qp->is_user)
735 memcpy(p, (void *)(uintptr_t)sge->addr,
740 } else if (mask & WR_REG_MASK) {
742 wqe->state = wqe_state_posted;
745 memcpy(wqe->dma.sge, ibwr->sg_list,
746 num_sge * sizeof(struct ib_sge));
748 wqe->iova = (mask & WR_ATOMIC_MASK) ?
749 atomic_wr(ibwr)->remote_addr :
750 rdma_wr(ibwr)->remote_addr;
752 wqe->dma.length = length;
753 wqe->dma.resid = length;
754 wqe->dma.num_sge = num_sge;
755 wqe->dma.cur_sge = 0;
756 wqe->dma.sge_offset = 0;
757 wqe->state = wqe_state_posted;
758 wqe->ssn = atomic_add_return(1, &qp->ssn);
763 static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr,
764 unsigned mask, u32 length)
767 struct rxe_sq *sq = &qp->sq;
768 struct rxe_send_wqe *send_wqe;
771 err = validate_send_wr(qp, ibwr, mask, length);
775 spin_lock_irqsave(&qp->sq.sq_lock, flags);
777 if (unlikely(queue_full(sq->queue))) {
782 send_wqe = producer_addr(sq->queue);
784 err = init_send_wqe(qp, ibwr, mask, length, send_wqe);
789 * make sure all changes to the work queue are
790 * written before we update the producer pointer
794 advance_producer(sq->queue);
795 spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
800 spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
804 static int rxe_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
805 struct ib_send_wr **bad_wr)
808 struct rxe_qp *qp = to_rqp(ibqp);
810 unsigned int length = 0;
814 if (unlikely(!qp->valid)) {
819 if (unlikely(qp->req.state < QP_STATE_READY)) {
825 mask = wr_opcode_mask(wr->opcode, qp);
826 if (unlikely(!mask)) {
832 if (unlikely((wr->send_flags & IB_SEND_INLINE) &&
833 !(mask & WR_INLINE_MASK))) {
840 for (i = 0; i < wr->num_sge; i++)
841 length += wr->sg_list[i].length;
843 err = post_one_send(qp, wr, mask, length);
853 * Must sched in case of GSI QP because ib_send_mad() hold irq lock,
854 * and the requester call ip_local_out_sk() that takes spin_lock_bh.
856 must_sched = (qp_type(qp) == IB_QPT_GSI) ||
857 (queue_count(qp->sq.queue) > 1);
859 rxe_run_task(&qp->req.task, must_sched);
864 static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
865 struct ib_recv_wr **bad_wr)
868 struct rxe_qp *qp = to_rqp(ibqp);
869 struct rxe_rq *rq = &qp->rq;
872 if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) {
878 if (unlikely(qp->srq)) {
884 spin_lock_irqsave(&rq->producer_lock, flags);
887 err = post_one_recv(rq, wr);
895 spin_unlock_irqrestore(&rq->producer_lock, flags);
901 static struct ib_cq *rxe_create_cq(struct ib_device *dev,
902 const struct ib_cq_init_attr *attr,
903 struct ib_ucontext *context,
904 struct ib_udata *udata)
907 struct rxe_dev *rxe = to_rdev(dev);
911 return ERR_PTR(-EINVAL);
913 err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector, udata);
917 cq = rxe_alloc(&rxe->cq_pool);
923 err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector,
936 static int rxe_destroy_cq(struct ib_cq *ibcq)
938 struct rxe_cq *cq = to_rcq(ibcq);
944 static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
947 struct rxe_cq *cq = to_rcq(ibcq);
948 struct rxe_dev *rxe = to_rdev(ibcq->device);
950 err = rxe_cq_chk_attr(rxe, cq, cqe, 0, udata);
954 err = rxe_cq_resize_queue(cq, cqe, udata);
964 static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
967 struct rxe_cq *cq = to_rcq(ibcq);
971 spin_lock_irqsave(&cq->cq_lock, flags);
972 for (i = 0; i < num_entries; i++) {
973 cqe = queue_head(cq->queue);
977 memcpy(wc++, &cqe->ibwc, sizeof(*wc));
978 advance_consumer(cq->queue);
980 spin_unlock_irqrestore(&cq->cq_lock, flags);
985 static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt)
987 struct rxe_cq *cq = to_rcq(ibcq);
988 int count = queue_count(cq->queue);
990 return (count > wc_cnt) ? wc_cnt : count;
993 static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
995 struct rxe_cq *cq = to_rcq(ibcq);
997 if (cq->notify != IB_CQ_NEXT_COMP)
998 cq->notify = flags & IB_CQ_SOLICITED_MASK;
1003 static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access)
1005 struct rxe_dev *rxe = to_rdev(ibpd->device);
1006 struct rxe_pd *pd = to_rpd(ibpd);
1010 mr = rxe_alloc(&rxe->mr_pool);
1020 err = rxe_mem_init_dma(rxe, pd, access, mr);
1031 return ERR_PTR(err);
1034 static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd,
1038 int access, struct ib_udata *udata)
1041 struct rxe_dev *rxe = to_rdev(ibpd->device);
1042 struct rxe_pd *pd = to_rpd(ibpd);
1045 mr = rxe_alloc(&rxe->mr_pool);
1055 err = rxe_mem_init_user(rxe, pd, start, length, iova,
1067 return ERR_PTR(err);
1070 static int rxe_dereg_mr(struct ib_mr *ibmr)
1072 struct rxe_mem *mr = to_rmr(ibmr);
1074 mr->state = RXE_MEM_STATE_ZOMBIE;
1075 rxe_drop_ref(mr->pd);
1081 static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd,
1082 enum ib_mr_type mr_type,
1085 struct rxe_dev *rxe = to_rdev(ibpd->device);
1086 struct rxe_pd *pd = to_rpd(ibpd);
1090 if (mr_type != IB_MR_TYPE_MEM_REG)
1091 return ERR_PTR(-EINVAL);
1093 mr = rxe_alloc(&rxe->mr_pool);
1103 err = rxe_mem_init_fast(rxe, pd, max_num_sg, mr);
1114 return ERR_PTR(err);
1117 static int rxe_set_page(struct ib_mr *ibmr, u64 addr)
1119 struct rxe_mem *mr = to_rmr(ibmr);
1120 struct rxe_map *map;
1121 struct rxe_phys_buf *buf;
1123 if (unlikely(mr->nbuf == mr->num_buf))
1126 map = mr->map[mr->nbuf / RXE_BUF_PER_MAP];
1127 buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP];
1130 buf->size = ibmr->page_size;
1136 static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
1137 unsigned int *sg_offset)
1139 struct rxe_mem *mr = to_rmr(ibmr);
1144 n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page);
1146 mr->va = ibmr->iova;
1147 mr->iova = ibmr->iova;
1148 mr->length = ibmr->length;
1149 mr->page_shift = ilog2(ibmr->page_size);
1150 mr->page_mask = ibmr->page_size - 1;
1151 mr->offset = mr->iova & mr->page_mask;
1156 static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
1159 struct rxe_dev *rxe = to_rdev(ibqp->device);
1160 struct rxe_qp *qp = to_rqp(ibqp);
1161 struct rxe_mc_grp *grp;
1163 /* takes a ref on grp if successful */
1164 err = rxe_mcast_get_grp(rxe, mgid, &grp);
1168 err = rxe_mcast_add_grp_elem(rxe, qp, grp);
1174 static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
1176 struct rxe_dev *rxe = to_rdev(ibqp->device);
1177 struct rxe_qp *qp = to_rqp(ibqp);
1179 return rxe_mcast_drop_grp_elem(rxe, qp, mgid);
1182 static ssize_t rxe_show_parent(struct device *device,
1183 struct device_attribute *attr, char *buf)
1185 struct rxe_dev *rxe = container_of(device, struct rxe_dev,
1189 name = rxe->ifc_ops->parent_name(rxe, 1);
1190 return snprintf(buf, 16, "%s\n", name);
1193 static DEVICE_ATTR(parent, S_IRUGO, rxe_show_parent, NULL);
1195 static struct device_attribute *rxe_dev_attributes[] = {
1199 int rxe_register_device(struct rxe_dev *rxe)
1203 struct ib_device *dev = &rxe->ib_dev;
1205 strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX);
1206 strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
1208 dev->owner = THIS_MODULE;
1209 dev->node_type = RDMA_NODE_IB_CA;
1210 dev->phys_port_cnt = 1;
1211 dev->num_comp_vectors = RXE_NUM_COMP_VECTORS;
1212 dev->dma_device = rxe->ifc_ops->dma_device(rxe);
1213 dev->local_dma_lkey = 0;
1214 dev->node_guid = rxe->ifc_ops->node_guid(rxe);
1215 dev->dma_ops = &rxe_dma_mapping_ops;
1217 dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION;
1218 dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT)
1219 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)
1220 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE)
1221 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT)
1222 | BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD)
1223 | BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD)
1224 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ)
1225 | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ)
1226 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ)
1227 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ)
1228 | BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV)
1229 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP)
1230 | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP)
1231 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP)
1232 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP)
1233 | BIT_ULL(IB_USER_VERBS_CMD_POST_SEND)
1234 | BIT_ULL(IB_USER_VERBS_CMD_POST_RECV)
1235 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ)
1236 | BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ)
1237 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ)
1238 | BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ)
1239 | BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ)
1240 | BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ)
1241 | BIT_ULL(IB_USER_VERBS_CMD_REG_MR)
1242 | BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR)
1243 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH)
1244 | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH)
1245 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH)
1246 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH)
1247 | BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST)
1248 | BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST)
1251 dev->query_device = rxe_query_device;
1252 dev->modify_device = rxe_modify_device;
1253 dev->query_port = rxe_query_port;
1254 dev->modify_port = rxe_modify_port;
1255 dev->get_link_layer = rxe_get_link_layer;
1256 dev->query_gid = rxe_query_gid;
1257 dev->get_netdev = rxe_get_netdev;
1258 dev->add_gid = rxe_add_gid;
1259 dev->del_gid = rxe_del_gid;
1260 dev->query_pkey = rxe_query_pkey;
1261 dev->alloc_ucontext = rxe_alloc_ucontext;
1262 dev->dealloc_ucontext = rxe_dealloc_ucontext;
1263 dev->mmap = rxe_mmap;
1264 dev->get_port_immutable = rxe_port_immutable;
1265 dev->alloc_pd = rxe_alloc_pd;
1266 dev->dealloc_pd = rxe_dealloc_pd;
1267 dev->create_ah = rxe_create_ah;
1268 dev->modify_ah = rxe_modify_ah;
1269 dev->query_ah = rxe_query_ah;
1270 dev->destroy_ah = rxe_destroy_ah;
1271 dev->create_srq = rxe_create_srq;
1272 dev->modify_srq = rxe_modify_srq;
1273 dev->query_srq = rxe_query_srq;
1274 dev->destroy_srq = rxe_destroy_srq;
1275 dev->post_srq_recv = rxe_post_srq_recv;
1276 dev->create_qp = rxe_create_qp;
1277 dev->modify_qp = rxe_modify_qp;
1278 dev->query_qp = rxe_query_qp;
1279 dev->destroy_qp = rxe_destroy_qp;
1280 dev->post_send = rxe_post_send;
1281 dev->post_recv = rxe_post_recv;
1282 dev->create_cq = rxe_create_cq;
1283 dev->destroy_cq = rxe_destroy_cq;
1284 dev->resize_cq = rxe_resize_cq;
1285 dev->poll_cq = rxe_poll_cq;
1286 dev->peek_cq = rxe_peek_cq;
1287 dev->req_notify_cq = rxe_req_notify_cq;
1288 dev->get_dma_mr = rxe_get_dma_mr;
1289 dev->reg_user_mr = rxe_reg_user_mr;
1290 dev->dereg_mr = rxe_dereg_mr;
1291 dev->alloc_mr = rxe_alloc_mr;
1292 dev->map_mr_sg = rxe_map_mr_sg;
1293 dev->attach_mcast = rxe_attach_mcast;
1294 dev->detach_mcast = rxe_detach_mcast;
1296 err = ib_register_device(dev, NULL);
1298 pr_warn("rxe_register_device failed, err = %d\n", err);
1302 for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) {
1303 err = device_create_file(&dev->dev, rxe_dev_attributes[i]);
1305 pr_warn("device_create_file failed, i = %d, err = %d\n",
1314 ib_unregister_device(dev);
1319 int rxe_unregister_device(struct rxe_dev *rxe)
1322 struct ib_device *dev = &rxe->ib_dev;
1324 for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i)
1325 device_remove_file(&dev->dev, rxe_dev_attributes[i]);
1327 ib_unregister_device(dev);