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
34 #include <linux/dma-mapping.h>
35 #include <net/addrconf.h>
38 #include "rxe_queue.h"
39 #include "rxe_hw_counters.h"
41 static int rxe_query_device(struct ib_device *dev,
42 struct ib_device_attr *attr,
45 struct rxe_dev *rxe = to_rdev(dev);
47 if (uhw->inlen || uhw->outlen)
54 static void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed,
58 *active_width = IB_WIDTH_1X;
59 *active_speed = IB_SPEED_SDR;
60 } else if (speed <= 10000) {
61 *active_width = IB_WIDTH_1X;
62 *active_speed = IB_SPEED_FDR10;
63 } else if (speed <= 20000) {
64 *active_width = IB_WIDTH_4X;
65 *active_speed = IB_SPEED_DDR;
66 } else if (speed <= 30000) {
67 *active_width = IB_WIDTH_4X;
68 *active_speed = IB_SPEED_QDR;
69 } else if (speed <= 40000) {
70 *active_width = IB_WIDTH_4X;
71 *active_speed = IB_SPEED_FDR10;
73 *active_width = IB_WIDTH_4X;
74 *active_speed = IB_SPEED_EDR;
78 static int rxe_query_port(struct ib_device *dev,
79 u8 port_num, struct ib_port_attr *attr)
81 struct rxe_dev *rxe = to_rdev(dev);
82 struct rxe_port *port;
85 if (unlikely(port_num != 1)) {
86 pr_warn("invalid port_number %d\n", port_num);
92 /* *attr being zeroed by the caller, avoid zeroing it here */
95 mutex_lock(&rxe->usdev_lock);
96 if (rxe->ndev->ethtool_ops->get_link_ksettings) {
97 struct ethtool_link_ksettings ks;
99 rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks);
100 speed = ks.base.speed;
101 } else if (rxe->ndev->ethtool_ops->get_settings) {
102 struct ethtool_cmd cmd;
104 rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd);
107 pr_warn("%s speed is unknown, defaulting to 1000\n",
111 rxe_eth_speed_to_ib_speed(speed, &attr->active_speed,
112 &attr->active_width);
113 mutex_unlock(&rxe->usdev_lock);
121 static int rxe_query_gid(struct ib_device *device,
122 u8 port_num, int index, union ib_gid *gid)
126 if (index > RXE_PORT_GID_TBL_LEN)
129 ret = ib_get_cached_gid(device, port_num, index, gid, NULL);
130 if (ret == -EAGAIN) {
131 memcpy(gid, &zgid, sizeof(*gid));
138 static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int
139 index, const union ib_gid *gid,
140 const struct ib_gid_attr *attr, void **context)
142 if (index >= RXE_PORT_GID_TBL_LEN)
147 static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int
148 index, void **context)
150 if (index >= RXE_PORT_GID_TBL_LEN)
155 static struct net_device *rxe_get_netdev(struct ib_device *device,
158 struct rxe_dev *rxe = to_rdev(device);
168 static int rxe_query_pkey(struct ib_device *device,
169 u8 port_num, u16 index, u16 *pkey)
171 struct rxe_dev *rxe = to_rdev(device);
172 struct rxe_port *port;
174 if (unlikely(port_num != 1)) {
175 dev_warn(device->dev.parent, "invalid port_num = %d\n",
182 if (unlikely(index >= port->attr.pkey_tbl_len)) {
183 dev_warn(device->dev.parent, "invalid index = %d\n",
188 *pkey = port->pkey_tbl[index];
195 static int rxe_modify_device(struct ib_device *dev,
196 int mask, struct ib_device_modify *attr)
198 struct rxe_dev *rxe = to_rdev(dev);
200 if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID)
201 rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid);
203 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
204 memcpy(rxe->ib_dev.node_desc,
205 attr->node_desc, sizeof(rxe->ib_dev.node_desc));
211 static int rxe_modify_port(struct ib_device *dev,
212 u8 port_num, int mask, struct ib_port_modify *attr)
214 struct rxe_dev *rxe = to_rdev(dev);
215 struct rxe_port *port;
217 if (unlikely(port_num != 1)) {
218 pr_warn("invalid port_num = %d\n", port_num);
224 port->attr.port_cap_flags |= attr->set_port_cap_mask;
225 port->attr.port_cap_flags &= ~attr->clr_port_cap_mask;
227 if (mask & IB_PORT_RESET_QKEY_CNTR)
228 port->attr.qkey_viol_cntr = 0;
236 static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev,
239 struct rxe_dev *rxe = to_rdev(dev);
241 return rxe_link_layer(rxe, port_num);
244 static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev,
245 struct ib_udata *udata)
247 struct rxe_dev *rxe = to_rdev(dev);
248 struct rxe_ucontext *uc;
250 uc = rxe_alloc(&rxe->uc_pool);
251 return uc ? &uc->ibuc : ERR_PTR(-ENOMEM);
254 static int rxe_dealloc_ucontext(struct ib_ucontext *ibuc)
256 struct rxe_ucontext *uc = to_ruc(ibuc);
262 static int rxe_port_immutable(struct ib_device *dev, u8 port_num,
263 struct ib_port_immutable *immutable)
266 struct ib_port_attr attr;
268 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
270 err = ib_query_port(dev, port_num, &attr);
274 immutable->pkey_tbl_len = attr.pkey_tbl_len;
275 immutable->gid_tbl_len = attr.gid_tbl_len;
276 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
281 static struct ib_pd *rxe_alloc_pd(struct ib_device *dev,
282 struct ib_ucontext *context,
283 struct ib_udata *udata)
285 struct rxe_dev *rxe = to_rdev(dev);
288 pd = rxe_alloc(&rxe->pd_pool);
289 return pd ? &pd->ibpd : ERR_PTR(-ENOMEM);
292 static int rxe_dealloc_pd(struct ib_pd *ibpd)
294 struct rxe_pd *pd = to_rpd(ibpd);
300 static int rxe_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr,
305 struct ib_gid_attr sgid_attr;
307 err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num,
308 attr->grh.sgid_index, &sgid,
311 pr_err("Failed to query sgid. err = %d\n", err);
315 err = rxe_av_from_attr(rxe, attr->port_num, av, attr);
317 err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);
320 dev_put(sgid_attr.ndev);
324 static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr,
325 struct ib_udata *udata)
329 struct rxe_dev *rxe = to_rdev(ibpd->device);
330 struct rxe_pd *pd = to_rpd(ibpd);
333 err = rxe_av_chk_attr(rxe, attr);
337 ah = rxe_alloc(&rxe->ah_pool);
346 err = rxe_init_av(rxe, attr, &ah->av);
359 static int rxe_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
362 struct rxe_dev *rxe = to_rdev(ibah->device);
363 struct rxe_ah *ah = to_rah(ibah);
365 err = rxe_av_chk_attr(rxe, attr);
369 err = rxe_init_av(rxe, attr, &ah->av);
376 static int rxe_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
378 struct rxe_dev *rxe = to_rdev(ibah->device);
379 struct rxe_ah *ah = to_rah(ibah);
381 memset(attr, 0, sizeof(*attr));
382 rxe_av_to_attr(rxe, &ah->av, attr);
386 static int rxe_destroy_ah(struct ib_ah *ibah)
388 struct rxe_ah *ah = to_rah(ibah);
390 rxe_drop_ref(ah->pd);
395 static int post_one_recv(struct rxe_rq *rq, struct ib_recv_wr *ibwr)
400 struct rxe_recv_wqe *recv_wqe;
401 int num_sge = ibwr->num_sge;
403 if (unlikely(queue_full(rq->queue))) {
408 if (unlikely(num_sge > rq->max_sge)) {
414 for (i = 0; i < num_sge; i++)
415 length += ibwr->sg_list[i].length;
417 recv_wqe = producer_addr(rq->queue);
418 recv_wqe->wr_id = ibwr->wr_id;
419 recv_wqe->num_sge = num_sge;
421 memcpy(recv_wqe->dma.sge, ibwr->sg_list,
422 num_sge * sizeof(struct ib_sge));
424 recv_wqe->dma.length = length;
425 recv_wqe->dma.resid = length;
426 recv_wqe->dma.num_sge = num_sge;
427 recv_wqe->dma.cur_sge = 0;
428 recv_wqe->dma.sge_offset = 0;
430 /* make sure all changes to the work queue are written before we
431 * update the producer pointer
435 advance_producer(rq->queue);
442 static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd,
443 struct ib_srq_init_attr *init,
444 struct ib_udata *udata)
447 struct rxe_dev *rxe = to_rdev(ibpd->device);
448 struct rxe_pd *pd = to_rpd(ibpd);
450 struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
452 err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK);
456 srq = rxe_alloc(&rxe->srq_pool);
466 err = rxe_srq_from_init(rxe, srq, init, context, udata);
480 static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
481 enum ib_srq_attr_mask mask,
482 struct ib_udata *udata)
485 struct rxe_srq *srq = to_rsrq(ibsrq);
486 struct rxe_dev *rxe = to_rdev(ibsrq->device);
488 err = rxe_srq_chk_attr(rxe, srq, attr, mask);
492 err = rxe_srq_from_attr(rxe, srq, attr, mask, udata);
502 static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
504 struct rxe_srq *srq = to_rsrq(ibsrq);
509 attr->max_wr = srq->rq.queue->buf->index_mask;
510 attr->max_sge = srq->rq.max_sge;
511 attr->srq_limit = srq->limit;
515 static int rxe_destroy_srq(struct ib_srq *ibsrq)
517 struct rxe_srq *srq = to_rsrq(ibsrq);
520 rxe_queue_cleanup(srq->rq.queue);
522 rxe_drop_ref(srq->pd);
529 static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
530 struct ib_recv_wr **bad_wr)
534 struct rxe_srq *srq = to_rsrq(ibsrq);
536 spin_lock_irqsave(&srq->rq.producer_lock, flags);
539 err = post_one_recv(&srq->rq, wr);
545 spin_unlock_irqrestore(&srq->rq.producer_lock, flags);
553 static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd,
554 struct ib_qp_init_attr *init,
555 struct ib_udata *udata)
558 struct rxe_dev *rxe = to_rdev(ibpd->device);
559 struct rxe_pd *pd = to_rpd(ibpd);
562 err = rxe_qp_chk_init(rxe, init);
566 qp = rxe_alloc(&rxe->qp_pool);
582 err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd);
596 static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
597 int mask, struct ib_udata *udata)
600 struct rxe_dev *rxe = to_rdev(ibqp->device);
601 struct rxe_qp *qp = to_rqp(ibqp);
603 err = rxe_qp_chk_attr(rxe, qp, attr, mask);
607 err = rxe_qp_from_attr(qp, attr, mask, udata);
617 static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
618 int mask, struct ib_qp_init_attr *init)
620 struct rxe_qp *qp = to_rqp(ibqp);
622 rxe_qp_to_init(qp, init);
623 rxe_qp_to_attr(qp, attr, mask);
628 static int rxe_destroy_qp(struct ib_qp *ibqp)
630 struct rxe_qp *qp = to_rqp(ibqp);
638 static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr,
639 unsigned int mask, unsigned int length)
641 int num_sge = ibwr->num_sge;
642 struct rxe_sq *sq = &qp->sq;
644 if (unlikely(num_sge > sq->max_sge))
647 if (unlikely(mask & WR_ATOMIC_MASK)) {
651 if (atomic_wr(ibwr)->remote_addr & 0x7)
655 if (unlikely((ibwr->send_flags & IB_SEND_INLINE) &&
656 (length > sq->max_inline)))
665 static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr,
666 struct ib_send_wr *ibwr)
668 wr->wr_id = ibwr->wr_id;
669 wr->num_sge = ibwr->num_sge;
670 wr->opcode = ibwr->opcode;
671 wr->send_flags = ibwr->send_flags;
673 if (qp_type(qp) == IB_QPT_UD ||
674 qp_type(qp) == IB_QPT_SMI ||
675 qp_type(qp) == IB_QPT_GSI) {
676 wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn;
677 wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey;
678 if (qp_type(qp) == IB_QPT_GSI)
679 wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index;
680 if (wr->opcode == IB_WR_SEND_WITH_IMM)
681 wr->ex.imm_data = ibwr->ex.imm_data;
683 switch (wr->opcode) {
684 case IB_WR_RDMA_WRITE_WITH_IMM:
685 wr->ex.imm_data = ibwr->ex.imm_data;
686 case IB_WR_RDMA_READ:
687 case IB_WR_RDMA_WRITE:
688 wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr;
689 wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey;
691 case IB_WR_SEND_WITH_IMM:
692 wr->ex.imm_data = ibwr->ex.imm_data;
694 case IB_WR_SEND_WITH_INV:
695 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
697 case IB_WR_ATOMIC_CMP_AND_SWP:
698 case IB_WR_ATOMIC_FETCH_AND_ADD:
699 wr->wr.atomic.remote_addr =
700 atomic_wr(ibwr)->remote_addr;
701 wr->wr.atomic.compare_add =
702 atomic_wr(ibwr)->compare_add;
703 wr->wr.atomic.swap = atomic_wr(ibwr)->swap;
704 wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey;
706 case IB_WR_LOCAL_INV:
707 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
710 wr->wr.reg.mr = reg_wr(ibwr)->mr;
711 wr->wr.reg.key = reg_wr(ibwr)->key;
712 wr->wr.reg.access = reg_wr(ibwr)->access;
720 static int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr,
721 unsigned int mask, unsigned int length,
722 struct rxe_send_wqe *wqe)
724 int num_sge = ibwr->num_sge;
729 init_send_wr(qp, &wqe->wr, ibwr);
731 if (qp_type(qp) == IB_QPT_UD ||
732 qp_type(qp) == IB_QPT_SMI ||
733 qp_type(qp) == IB_QPT_GSI)
734 memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av));
736 if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) {
737 p = wqe->dma.inline_data;
740 for (i = 0; i < num_sge; i++, sge++) {
741 if (qp->is_user && copy_from_user(p, (__user void *)
742 (uintptr_t)sge->addr, sge->length))
745 else if (!qp->is_user)
746 memcpy(p, (void *)(uintptr_t)sge->addr,
751 } else if (mask & WR_REG_MASK) {
753 wqe->state = wqe_state_posted;
756 memcpy(wqe->dma.sge, ibwr->sg_list,
757 num_sge * sizeof(struct ib_sge));
759 wqe->iova = (mask & WR_ATOMIC_MASK) ?
760 atomic_wr(ibwr)->remote_addr :
761 rdma_wr(ibwr)->remote_addr;
763 wqe->dma.length = length;
764 wqe->dma.resid = length;
765 wqe->dma.num_sge = num_sge;
766 wqe->dma.cur_sge = 0;
767 wqe->dma.sge_offset = 0;
768 wqe->state = wqe_state_posted;
769 wqe->ssn = atomic_add_return(1, &qp->ssn);
774 static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr,
775 unsigned int mask, u32 length)
778 struct rxe_sq *sq = &qp->sq;
779 struct rxe_send_wqe *send_wqe;
782 err = validate_send_wr(qp, ibwr, mask, length);
786 spin_lock_irqsave(&qp->sq.sq_lock, flags);
788 if (unlikely(queue_full(sq->queue))) {
793 send_wqe = producer_addr(sq->queue);
795 err = init_send_wqe(qp, ibwr, mask, length, send_wqe);
800 * make sure all changes to the work queue are
801 * written before we update the producer pointer
805 advance_producer(sq->queue);
806 spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
811 spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
815 static int rxe_post_send_kernel(struct rxe_qp *qp, struct ib_send_wr *wr,
816 struct ib_send_wr **bad_wr)
820 unsigned int length = 0;
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_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
865 struct ib_send_wr **bad_wr)
867 struct rxe_qp *qp = to_rqp(ibqp);
869 if (unlikely(!qp->valid)) {
874 if (unlikely(qp->req.state < QP_STATE_READY)) {
880 /* Utilize process context to do protocol processing */
881 rxe_run_task(&qp->req.task, 0);
884 return rxe_post_send_kernel(qp, wr, bad_wr);
887 static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
888 struct ib_recv_wr **bad_wr)
891 struct rxe_qp *qp = to_rqp(ibqp);
892 struct rxe_rq *rq = &qp->rq;
895 if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) {
901 if (unlikely(qp->srq)) {
907 spin_lock_irqsave(&rq->producer_lock, flags);
910 err = post_one_recv(rq, wr);
918 spin_unlock_irqrestore(&rq->producer_lock, flags);
924 static struct ib_cq *rxe_create_cq(struct ib_device *dev,
925 const struct ib_cq_init_attr *attr,
926 struct ib_ucontext *context,
927 struct ib_udata *udata)
930 struct rxe_dev *rxe = to_rdev(dev);
934 return ERR_PTR(-EINVAL);
936 err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector, udata);
940 cq = rxe_alloc(&rxe->cq_pool);
946 err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector,
959 static int rxe_destroy_cq(struct ib_cq *ibcq)
961 struct rxe_cq *cq = to_rcq(ibcq);
967 static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
970 struct rxe_cq *cq = to_rcq(ibcq);
971 struct rxe_dev *rxe = to_rdev(ibcq->device);
973 err = rxe_cq_chk_attr(rxe, cq, cqe, 0, udata);
977 err = rxe_cq_resize_queue(cq, cqe, udata);
987 static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
990 struct rxe_cq *cq = to_rcq(ibcq);
994 spin_lock_irqsave(&cq->cq_lock, flags);
995 for (i = 0; i < num_entries; i++) {
996 cqe = queue_head(cq->queue);
1000 memcpy(wc++, &cqe->ibwc, sizeof(*wc));
1001 advance_consumer(cq->queue);
1003 spin_unlock_irqrestore(&cq->cq_lock, flags);
1008 static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt)
1010 struct rxe_cq *cq = to_rcq(ibcq);
1011 int count = queue_count(cq->queue);
1013 return (count > wc_cnt) ? wc_cnt : count;
1016 static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
1018 struct rxe_cq *cq = to_rcq(ibcq);
1019 unsigned long irq_flags;
1022 spin_lock_irqsave(&cq->cq_lock, irq_flags);
1023 if (cq->notify != IB_CQ_NEXT_COMP)
1024 cq->notify = flags & IB_CQ_SOLICITED_MASK;
1026 if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !queue_empty(cq->queue))
1029 spin_unlock_irqrestore(&cq->cq_lock, irq_flags);
1034 static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access)
1036 struct rxe_dev *rxe = to_rdev(ibpd->device);
1037 struct rxe_pd *pd = to_rpd(ibpd);
1041 mr = rxe_alloc(&rxe->mr_pool);
1051 err = rxe_mem_init_dma(rxe, pd, access, mr);
1062 return ERR_PTR(err);
1065 static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd,
1069 int access, struct ib_udata *udata)
1072 struct rxe_dev *rxe = to_rdev(ibpd->device);
1073 struct rxe_pd *pd = to_rpd(ibpd);
1076 mr = rxe_alloc(&rxe->mr_pool);
1086 err = rxe_mem_init_user(rxe, pd, start, length, iova,
1098 return ERR_PTR(err);
1101 static int rxe_dereg_mr(struct ib_mr *ibmr)
1103 struct rxe_mem *mr = to_rmr(ibmr);
1105 mr->state = RXE_MEM_STATE_ZOMBIE;
1106 rxe_drop_ref(mr->pd);
1112 static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd,
1113 enum ib_mr_type mr_type,
1116 struct rxe_dev *rxe = to_rdev(ibpd->device);
1117 struct rxe_pd *pd = to_rpd(ibpd);
1121 if (mr_type != IB_MR_TYPE_MEM_REG)
1122 return ERR_PTR(-EINVAL);
1124 mr = rxe_alloc(&rxe->mr_pool);
1134 err = rxe_mem_init_fast(rxe, pd, max_num_sg, mr);
1145 return ERR_PTR(err);
1148 static int rxe_set_page(struct ib_mr *ibmr, u64 addr)
1150 struct rxe_mem *mr = to_rmr(ibmr);
1151 struct rxe_map *map;
1152 struct rxe_phys_buf *buf;
1154 if (unlikely(mr->nbuf == mr->num_buf))
1157 map = mr->map[mr->nbuf / RXE_BUF_PER_MAP];
1158 buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP];
1161 buf->size = ibmr->page_size;
1167 static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
1168 int sg_nents, unsigned int *sg_offset)
1170 struct rxe_mem *mr = to_rmr(ibmr);
1175 n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page);
1177 mr->va = ibmr->iova;
1178 mr->iova = ibmr->iova;
1179 mr->length = ibmr->length;
1180 mr->page_shift = ilog2(ibmr->page_size);
1181 mr->page_mask = ibmr->page_size - 1;
1182 mr->offset = mr->iova & mr->page_mask;
1187 static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
1190 struct rxe_dev *rxe = to_rdev(ibqp->device);
1191 struct rxe_qp *qp = to_rqp(ibqp);
1192 struct rxe_mc_grp *grp;
1194 /* takes a ref on grp if successful */
1195 err = rxe_mcast_get_grp(rxe, mgid, &grp);
1199 err = rxe_mcast_add_grp_elem(rxe, qp, grp);
1205 static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
1207 struct rxe_dev *rxe = to_rdev(ibqp->device);
1208 struct rxe_qp *qp = to_rqp(ibqp);
1210 return rxe_mcast_drop_grp_elem(rxe, qp, mgid);
1213 static ssize_t rxe_show_parent(struct device *device,
1214 struct device_attribute *attr, char *buf)
1216 struct rxe_dev *rxe = container_of(device, struct rxe_dev,
1219 return snprintf(buf, 16, "%s\n", rxe_parent_name(rxe, 1));
1222 static DEVICE_ATTR(parent, S_IRUGO, rxe_show_parent, NULL);
1224 static struct device_attribute *rxe_dev_attributes[] = {
1228 int rxe_register_device(struct rxe_dev *rxe)
1232 struct ib_device *dev = &rxe->ib_dev;
1234 strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX);
1235 strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
1237 dev->owner = THIS_MODULE;
1238 dev->node_type = RDMA_NODE_IB_CA;
1239 dev->phys_port_cnt = 1;
1240 dev->num_comp_vectors = RXE_NUM_COMP_VECTORS;
1241 dev->dev.parent = rxe_dma_device(rxe);
1242 dev->local_dma_lkey = 0;
1243 addrconf_addr_eui48((unsigned char *)&dev->node_guid,
1244 rxe->ndev->dev_addr);
1245 dev->dev.dma_ops = &dma_virt_ops;
1247 dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION;
1248 dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT)
1249 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)
1250 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE)
1251 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT)
1252 | BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD)
1253 | BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD)
1254 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ)
1255 | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ)
1256 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ)
1257 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ)
1258 | BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV)
1259 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP)
1260 | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP)
1261 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP)
1262 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP)
1263 | BIT_ULL(IB_USER_VERBS_CMD_POST_SEND)
1264 | BIT_ULL(IB_USER_VERBS_CMD_POST_RECV)
1265 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ)
1266 | BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ)
1267 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ)
1268 | BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ)
1269 | BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ)
1270 | BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ)
1271 | BIT_ULL(IB_USER_VERBS_CMD_REG_MR)
1272 | BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR)
1273 | BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH)
1274 | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH)
1275 | BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH)
1276 | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH)
1277 | BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST)
1278 | BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST)
1281 dev->query_device = rxe_query_device;
1282 dev->modify_device = rxe_modify_device;
1283 dev->query_port = rxe_query_port;
1284 dev->modify_port = rxe_modify_port;
1285 dev->get_link_layer = rxe_get_link_layer;
1286 dev->query_gid = rxe_query_gid;
1287 dev->get_netdev = rxe_get_netdev;
1288 dev->add_gid = rxe_add_gid;
1289 dev->del_gid = rxe_del_gid;
1290 dev->query_pkey = rxe_query_pkey;
1291 dev->alloc_ucontext = rxe_alloc_ucontext;
1292 dev->dealloc_ucontext = rxe_dealloc_ucontext;
1293 dev->mmap = rxe_mmap;
1294 dev->get_port_immutable = rxe_port_immutable;
1295 dev->alloc_pd = rxe_alloc_pd;
1296 dev->dealloc_pd = rxe_dealloc_pd;
1297 dev->create_ah = rxe_create_ah;
1298 dev->modify_ah = rxe_modify_ah;
1299 dev->query_ah = rxe_query_ah;
1300 dev->destroy_ah = rxe_destroy_ah;
1301 dev->create_srq = rxe_create_srq;
1302 dev->modify_srq = rxe_modify_srq;
1303 dev->query_srq = rxe_query_srq;
1304 dev->destroy_srq = rxe_destroy_srq;
1305 dev->post_srq_recv = rxe_post_srq_recv;
1306 dev->create_qp = rxe_create_qp;
1307 dev->modify_qp = rxe_modify_qp;
1308 dev->query_qp = rxe_query_qp;
1309 dev->destroy_qp = rxe_destroy_qp;
1310 dev->post_send = rxe_post_send;
1311 dev->post_recv = rxe_post_recv;
1312 dev->create_cq = rxe_create_cq;
1313 dev->destroy_cq = rxe_destroy_cq;
1314 dev->resize_cq = rxe_resize_cq;
1315 dev->poll_cq = rxe_poll_cq;
1316 dev->peek_cq = rxe_peek_cq;
1317 dev->req_notify_cq = rxe_req_notify_cq;
1318 dev->get_dma_mr = rxe_get_dma_mr;
1319 dev->reg_user_mr = rxe_reg_user_mr;
1320 dev->dereg_mr = rxe_dereg_mr;
1321 dev->alloc_mr = rxe_alloc_mr;
1322 dev->map_mr_sg = rxe_map_mr_sg;
1323 dev->attach_mcast = rxe_attach_mcast;
1324 dev->detach_mcast = rxe_detach_mcast;
1325 dev->get_hw_stats = rxe_ib_get_hw_stats;
1326 dev->alloc_hw_stats = rxe_ib_alloc_hw_stats;
1328 rxe->tfm = crypto_alloc_shash("crc32", 0, 0);
1329 if (IS_ERR(rxe->tfm)) {
1330 pr_err("failed to allocate crc algorithm err:%ld\n",
1332 return PTR_ERR(rxe->tfm);
1335 err = ib_register_device(dev, NULL);
1337 pr_warn("rxe_register_device failed, err = %d\n", err);
1341 for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) {
1342 err = device_create_file(&dev->dev, rxe_dev_attributes[i]);
1344 pr_warn("device_create_file failed, i = %d, err = %d\n",
1353 ib_unregister_device(dev);
1355 crypto_free_shash(rxe->tfm);
1360 int rxe_unregister_device(struct rxe_dev *rxe)
1363 struct ib_device *dev = &rxe->ib_dev;
1365 for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i)
1366 device_remove_file(&dev->dev, rxe_dev_attributes[i]);
1368 ib_unregister_device(dev);