Commit 97f61250 authored by Michal Kalderon's avatar Michal Kalderon Committed by Jason Gunthorpe
Browse files

RDMA/qedr: Add doorbell overflow recovery support 

Use the doorbell recovery mechanism to register rdma related doorbells
that will be restored in case there is a doorbell overflow attention.

Link: https://lore.kernel.org/r/20191030094417.16866-8-michal.kalderon@marvell.com


Signed-off-by: default avatarAriel Elior <ariel.elior@marvell.com>
Signed-off-by: default avatarMichal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 4c6bb02d

drivers/infiniband/hw/qedr/qedr.h

+10 −1
Original line number Diff line number Diff line
@@ -235,6 +235,7 @@ struct qedr_ucontext { 
	u64 dpi_phys_addr;

	u32 dpi_size;

	u16 dpi;

	bool db_rec;

};



union db_prod64 {
@@ -262,6 +263,11 @@ struct qedr_userq { 
	struct qedr_pbl *pbl_tbl;

	u64 buf_addr;

	size_t buf_len;



	/* doorbell recovery */

	void __iomem *db_addr;

	struct qedr_user_db_rec *db_rec_data;

	struct rdma_user_mmap_entry *db_mmap_entry;

};



struct qedr_cq {
@@ -482,7 +488,10 @@ struct qedr_mr { 
struct qedr_user_mmap_entry {

	struct rdma_user_mmap_entry rdma_entry;

	struct qedr_dev *dev;

	union {

		u64 io_address;

		void *address;

	};

	size_t length;

	u16 dpi;

	u8 mmap_flag;

drivers/infiniband/hw/qedr/verbs.c

+265 −49
Original line number Diff line number Diff line
@@ -61,6 +61,7 @@ 


enum {

	QEDR_USER_MMAP_IO_WC = 0,

	QEDR_USER_MMAP_PHYS_PAGE,

};



static inline int qedr_ib_copy_to_udata(struct ib_udata *udata, void *src,
@@ -267,6 +268,7 @@ int qedr_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) 
	int rc;

	struct qedr_ucontext *ctx = get_qedr_ucontext(uctx);

	struct qedr_alloc_ucontext_resp uresp = {};

	struct qedr_alloc_ucontext_req ureq = {};

	struct qedr_dev *dev = get_qedr_dev(ibdev);

	struct qed_rdma_add_user_out_params oparams;

	struct qedr_user_mmap_entry *entry;
@@ -274,6 +276,17 @@ int qedr_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) 
	if (!udata)

		return -EFAULT;



	if (udata->inlen) {

		rc = ib_copy_from_udata(&ureq, udata,

					min(sizeof(ureq), udata->inlen));

		if (rc) {

			DP_ERR(dev, "Problem copying data from user space\n");

			return -EFAULT;

		}



		ctx->db_rec = !!(ureq.context_flags & QEDR_ALLOC_UCTX_DB_REC);

	}



	rc = dev->ops->rdma_add_user(dev->rdma_ctx, &oparams);

	if (rc) {

		DP_ERR(dev,
@@ -352,7 +365,9 @@ void qedr_mmap_free(struct rdma_user_mmap_entry *rdma_entry) 
	struct qedr_user_mmap_entry *entry = get_qedr_mmap_entry(rdma_entry);

	struct qedr_dev *dev = entry->dev;



	if (entry->mmap_flag == QEDR_USER_MMAP_IO_WC)

	if (entry->mmap_flag == QEDR_USER_MMAP_PHYS_PAGE)

		free_page((unsigned long)entry->address);

	else if (entry->mmap_flag == QEDR_USER_MMAP_IO_WC)

		dev->ops->rdma_remove_user(dev->rdma_ctx, entry->dpi);



	kfree(entry);
@@ -389,6 +404,10 @@ int qedr_mmap(struct ib_ucontext *ucontext, struct vm_area_struct *vma) 
				       pgprot_writecombine(vma->vm_page_prot),

				       rdma_entry);

		break;

	case QEDR_USER_MMAP_PHYS_PAGE:

		rc = vm_insert_page(vma, vma->vm_start,

				    virt_to_page(entry->address));

		break;

	default:

		rc = -EINVAL;

	}
@@ -629,16 +648,48 @@ static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem, 
	}

}



static int qedr_db_recovery_add(struct qedr_dev *dev,

				void __iomem *db_addr,

				void *db_data,

				enum qed_db_rec_width db_width,

				enum qed_db_rec_space db_space)

{

	if (!db_data) {

		DP_DEBUG(dev, QEDR_MSG_INIT, "avoiding db rec since old lib\n");

		return 0;

	}



	return dev->ops->common->db_recovery_add(dev->cdev, db_addr, db_data,

						 db_width, db_space);

}



static void qedr_db_recovery_del(struct qedr_dev *dev,

				 void __iomem *db_addr,

				 void *db_data)

{

	if (!db_data) {

		DP_DEBUG(dev, QEDR_MSG_INIT, "avoiding db rec since old lib\n");

		return;

	}



	/* Ignore return code as there is not much we can do about it. Error

	 * log will be printed inside.

	 */

	dev->ops->common->db_recovery_del(dev->cdev, db_addr, db_data);

}



static int qedr_copy_cq_uresp(struct qedr_dev *dev,

			      struct qedr_cq *cq, struct ib_udata *udata)

			      struct qedr_cq *cq, struct ib_udata *udata,

			      u32 db_offset)

{

	struct qedr_create_cq_uresp uresp;

	int rc;



	memset(&uresp, 0, sizeof(uresp));



	uresp.db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);

	uresp.db_offset = db_offset;

	uresp.icid = cq->icid;

	uresp.db_rec_addr = rdma_user_mmap_get_offset(cq->q.db_mmap_entry);



	rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp));

	if (rc)
@@ -666,10 +717,58 @@ static inline int qedr_align_cq_entries(int entries) 
	return aligned_size / QEDR_CQE_SIZE;

}



static int qedr_init_user_db_rec(struct ib_udata *udata,

				 struct qedr_dev *dev, struct qedr_userq *q,

				 bool requires_db_rec)

{

	struct qedr_ucontext *uctx =

		rdma_udata_to_drv_context(udata, struct qedr_ucontext,

					  ibucontext);

	struct qedr_user_mmap_entry *entry;

	int rc;



	/* Aborting for non doorbell userqueue (SRQ) or non-supporting lib */

	if (requires_db_rec == 0 || !uctx->db_rec)

		return 0;



	/* Allocate a page for doorbell recovery, add to mmap */

	q->db_rec_data = (void *)get_zeroed_page(GFP_USER);

	if (!q->db_rec_data) {

		DP_ERR(dev, "get_zeroed_page failed\n");

		return -ENOMEM;

	}



	entry = kzalloc(sizeof(*entry), GFP_KERNEL);

	if (!entry)

		goto err_free_db_data;



	entry->address = q->db_rec_data;

	entry->length = PAGE_SIZE;

	entry->mmap_flag = QEDR_USER_MMAP_PHYS_PAGE;

	rc = rdma_user_mmap_entry_insert(&uctx->ibucontext,

					 &entry->rdma_entry,

					 PAGE_SIZE);

	if (rc)

		goto err_free_entry;



	q->db_mmap_entry = &entry->rdma_entry;



	return 0;



err_free_entry:

	kfree(entry);



err_free_db_data:

	free_page((unsigned long)q->db_rec_data);

	q->db_rec_data = NULL;

	return -ENOMEM;

}



static inline int qedr_init_user_queue(struct ib_udata *udata,

				       struct qedr_dev *dev,

				       struct qedr_userq *q, u64 buf_addr,

				       size_t buf_len, int access, int dmasync,

				       size_t buf_len, bool requires_db_rec,

				       int access, int dmasync,

				       int alloc_and_init)

{

	u32 fw_pages;
@@ -707,7 +806,8 @@ static inline int qedr_init_user_queue(struct ib_udata *udata, 
		}

	}



	return 0;

	/* mmap the user address used to store doorbell data for recovery */

	return qedr_init_user_db_rec(udata, dev, q, requires_db_rec);



err0:

	ib_umem_release(q->umem);
@@ -793,6 +893,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
	int entries = attr->cqe;

	struct qedr_cq *cq = get_qedr_cq(ibcq);

	int chain_entries;

	u32 db_offset;

	int page_cnt;

	u64 pbl_ptr;

	u16 icid;
@@ -812,8 +913,12 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
	chain_entries = qedr_align_cq_entries(entries);

	chain_entries = min_t(int, chain_entries, QEDR_MAX_CQES);



	/* calc db offset. user will add DPI base, kernel will add db addr */

	db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);



	if (udata) {

		if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {

		if (ib_copy_from_udata(&ureq, udata, min(sizeof(ureq),

							 udata->inlen))) {

			DP_ERR(dev,

			       "create cq: problem copying data from user space\n");

			goto err0;
@@ -828,8 +933,9 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
		cq->cq_type = QEDR_CQ_TYPE_USER;



		rc = qedr_init_user_queue(udata, dev, &cq->q, ureq.addr,

					  ureq.len, IB_ACCESS_LOCAL_WRITE, 1,

					  1);

					  ureq.len, true,

					  IB_ACCESS_LOCAL_WRITE,

					  1, 1);

		if (rc)

			goto err0;
@@ -837,6 +943,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
		page_cnt = cq->q.pbl_info.num_pbes;



		cq->ibcq.cqe = chain_entries;

		cq->q.db_addr = ctx->dpi_addr + db_offset;

	} else {

		cq->cq_type = QEDR_CQ_TYPE_KERNEL;
@@ -848,7 +955,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
						   sizeof(union rdma_cqe),

						   &cq->pbl, NULL);

		if (rc)

			goto err1;

			goto err0;



		page_cnt = qed_chain_get_page_cnt(&cq->pbl);

		pbl_ptr = qed_chain_get_pbl_phys(&cq->pbl);
@@ -860,21 +967,28 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 


	rc = dev->ops->rdma_create_cq(dev->rdma_ctx, &params, &icid);

	if (rc)

		goto err2;

		goto err1;



	cq->icid = icid;

	cq->sig = QEDR_CQ_MAGIC_NUMBER;

	spin_lock_init(&cq->cq_lock);



	if (udata) {

		rc = qedr_copy_cq_uresp(dev, cq, udata);

		rc = qedr_copy_cq_uresp(dev, cq, udata, db_offset);

		if (rc)

			goto err3;

			goto err2;



		rc = qedr_db_recovery_add(dev, cq->q.db_addr,

					  &cq->q.db_rec_data->db_data,

					  DB_REC_WIDTH_64B,

					  DB_REC_USER);

		if (rc)

			goto err2;



	} else {

		/* Generate doorbell address. */

		cq->db_addr = dev->db_addr +

		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);

		cq->db.data.icid = cq->icid;

		cq->db_addr = dev->db_addr + db_offset;

		cq->db.data.params = DB_AGG_CMD_SET <<

		    RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT;
@@ -884,6 +998,11 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
		cq->latest_cqe = NULL;

		consume_cqe(cq);

		cq->cq_cons = qed_chain_get_cons_idx_u32(&cq->pbl);



		rc = qedr_db_recovery_add(dev, cq->db_addr, &cq->db.data,

					  DB_REC_WIDTH_64B, DB_REC_KERNEL);

		if (rc)

			goto err2;

	}



	DP_DEBUG(dev, QEDR_MSG_CQ,
@@ -892,18 +1011,19 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 


	return 0;



err3:

err2:

	destroy_iparams.icid = cq->icid;

	dev->ops->rdma_destroy_cq(dev->rdma_ctx, &destroy_iparams,

				  &destroy_oparams);

err2:

	if (udata)

		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);

	else

		dev->ops->common->chain_free(dev->cdev, &cq->pbl);

err1:

	if (udata)

	if (udata) {

		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);

		ib_umem_release(cq->q.umem);

		if (ctx)

			rdma_user_mmap_entry_remove(cq->q.db_mmap_entry);

	} else {

		dev->ops->common->chain_free(dev->cdev, &cq->pbl);

	}

err0:

	return -EINVAL;

}
@@ -934,8 +1054,10 @@ void qedr_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) 
	cq->destroyed = 1;



	/* GSIs CQs are handled by driver, so they don't exist in the FW */

	if (cq->cq_type == QEDR_CQ_TYPE_GSI)

	if (cq->cq_type == QEDR_CQ_TYPE_GSI) {

		qedr_db_recovery_del(dev, cq->db_addr, &cq->db.data);

		return;

	}



	iparams.icid = cq->icid;

	dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams);
@@ -944,6 +1066,14 @@ void qedr_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) 
	if (udata) {

		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);

		ib_umem_release(cq->q.umem);



		if (cq->q.db_rec_data) {

			qedr_db_recovery_del(dev, cq->q.db_addr,

					     &cq->q.db_rec_data->db_data);

			rdma_user_mmap_entry_remove(cq->q.db_mmap_entry);

		}

	} else {

		qedr_db_recovery_del(dev, cq->db_addr, &cq->db.data);

	}



	/* We don't want the IRQ handler to handle a non-existing CQ so we
@@ -1122,6 +1252,7 @@ static void qedr_copy_rq_uresp(struct qedr_dev *dev, 
	}



	uresp->rq_icid = qp->icid;

	uresp->rq_db_rec_addr = rdma_user_mmap_get_offset(qp->urq.db_mmap_entry);

}



static void qedr_copy_sq_uresp(struct qedr_dev *dev,
@@ -1135,22 +1266,25 @@ static void qedr_copy_sq_uresp(struct qedr_dev *dev, 
		uresp->sq_icid = qp->icid;

	else

		uresp->sq_icid = qp->icid + 1;



	uresp->sq_db_rec_addr =

		rdma_user_mmap_get_offset(qp->usq.db_mmap_entry);

}



static int qedr_copy_qp_uresp(struct qedr_dev *dev,

			      struct qedr_qp *qp, struct ib_udata *udata)

			      struct qedr_qp *qp, struct ib_udata *udata,

			      struct qedr_create_qp_uresp *uresp)

{

	struct qedr_create_qp_uresp uresp;

	int rc;



	memset(&uresp, 0, sizeof(uresp));

	qedr_copy_sq_uresp(dev, &uresp, qp);

	qedr_copy_rq_uresp(dev, &uresp, qp);

	memset(uresp, 0, sizeof(*uresp));

	qedr_copy_sq_uresp(dev, uresp, qp);

	qedr_copy_rq_uresp(dev, uresp, qp);



	uresp.atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE;

	uresp.qp_id = qp->qp_id;

	uresp->atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE;

	uresp->qp_id = qp->qp_id;



	rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp));

	rc = qedr_ib_copy_to_udata(udata, uresp, sizeof(*uresp));

	if (rc)

		DP_ERR(dev,

		       "create qp: failed a copy to user space with qp icid=0x%x.\n",
@@ -1197,16 +1331,35 @@ static void qedr_set_common_qp_params(struct qedr_dev *dev, 
		 qp->sq.max_sges, qp->sq_cq->icid);

}



static void qedr_set_roce_db_info(struct qedr_dev *dev, struct qedr_qp *qp)

static int qedr_set_roce_db_info(struct qedr_dev *dev, struct qedr_qp *qp)

{

	int rc;



	qp->sq.db = dev->db_addr +

		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);

	qp->sq.db_data.data.icid = qp->icid + 1;

	rc = qedr_db_recovery_add(dev, qp->sq.db,

				  &qp->sq.db_data,

				  DB_REC_WIDTH_32B,

				  DB_REC_KERNEL);

	if (rc)

		return rc;



	if (!qp->srq) {

		qp->rq.db = dev->db_addr +

			    DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);

		qp->rq.db_data.data.icid = qp->icid;



		rc = qedr_db_recovery_add(dev, qp->rq.db,

					  &qp->rq.db_data,

					  DB_REC_WIDTH_32B,

					  DB_REC_KERNEL);

		if (rc)

			qedr_db_recovery_del(dev, qp->sq.db,

					     &qp->sq.db_data);

	}



	return rc;

}



static int qedr_check_srq_params(struct qedr_dev *dev,
@@ -1260,7 +1413,7 @@ static int qedr_init_srq_user_params(struct ib_udata *udata, 
	int rc;



	rc = qedr_init_user_queue(udata, srq->dev, &srq->usrq, ureq->srq_addr,

				  ureq->srq_len, access, dmasync, 1);

				  ureq->srq_len, false, access, dmasync, 1);

	if (rc)

		return rc;
@@ -1356,7 +1509,8 @@ int qedr_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init_attr, 
	hw_srq->max_sges = init_attr->attr.max_sge;



	if (udata) {

		if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {

		if (ib_copy_from_udata(&ureq, udata, min(sizeof(ureq),

							 udata->inlen))) {

			DP_ERR(dev,

			       "create srq: problem copying data from user space\n");

			goto err0;
@@ -1545,7 +1699,9 @@ qedr_iwarp_populate_user_qp(struct qedr_dev *dev, 
			   &qp->urq.pbl_info, FW_PAGE_SHIFT);

}



static void qedr_cleanup_user(struct qedr_dev *dev, struct qedr_qp *qp)

static void qedr_cleanup_user(struct qedr_dev *dev,

			      struct qedr_ucontext *ctx,

			      struct qedr_qp *qp)

{

	ib_umem_release(qp->usq.umem);

	qp->usq.umem = NULL;
@@ -1560,6 +1716,18 @@ static void qedr_cleanup_user(struct qedr_dev *dev, struct qedr_qp *qp) 
		kfree(qp->usq.pbl_tbl);

		kfree(qp->urq.pbl_tbl);

	}



	if (qp->usq.db_rec_data) {

		qedr_db_recovery_del(dev, qp->usq.db_addr,

				     &qp->usq.db_rec_data->db_data);

		rdma_user_mmap_entry_remove(qp->usq.db_mmap_entry);

	}



	if (qp->urq.db_rec_data) {

		qedr_db_recovery_del(dev, qp->urq.db_addr,

				     &qp->urq.db_rec_data->db_data);

		rdma_user_mmap_entry_remove(qp->urq.db_mmap_entry);

	}

}



static int qedr_create_user_qp(struct qedr_dev *dev,
@@ -1571,13 +1739,15 @@ static int qedr_create_user_qp(struct qedr_dev *dev, 
	struct qed_rdma_create_qp_in_params in_params;

	struct qed_rdma_create_qp_out_params out_params;

	struct qedr_pd *pd = get_qedr_pd(ibpd);

	struct qedr_create_qp_uresp uresp;

	struct qedr_ucontext *ctx = NULL;

	struct qedr_create_qp_ureq ureq;

	int alloc_and_init = rdma_protocol_roce(&dev->ibdev, 1);

	int rc = -EINVAL;



	qp->create_type = QEDR_QP_CREATE_USER;

	memset(&ureq, 0, sizeof(ureq));

	rc = ib_copy_from_udata(&ureq, udata, sizeof(ureq));

	rc = ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), udata->inlen));

	if (rc) {

		DP_ERR(dev, "Problem copying data from user space\n");

		return rc;
@@ -1585,14 +1755,16 @@ static int qedr_create_user_qp(struct qedr_dev *dev, 


	/* SQ - read access only (0), dma sync not required (0) */

	rc = qedr_init_user_queue(udata, dev, &qp->usq, ureq.sq_addr,

				  ureq.sq_len, 0, 0, alloc_and_init);

				  ureq.sq_len, true, 0, 0,

				  alloc_and_init);

	if (rc)

		return rc;



	if (!qp->srq) {

		/* RQ - read access only (0), dma sync not required (0) */

		rc = qedr_init_user_queue(udata, dev, &qp->urq, ureq.rq_addr,

					  ureq.rq_len, 0, 0, alloc_and_init);

					  ureq.rq_len, true,

					  0, 0, alloc_and_init);

		if (rc)

			return rc;

	}
@@ -1622,29 +1794,57 @@ static int qedr_create_user_qp(struct qedr_dev *dev, 
	qp->qp_id = out_params.qp_id;

	qp->icid = out_params.icid;



	rc = qedr_copy_qp_uresp(dev, qp, udata);

	rc = qedr_copy_qp_uresp(dev, qp, udata, &uresp);

	if (rc)

		goto err;



	/* db offset was calculated in copy_qp_uresp, now set in the user q */

	ctx = pd->uctx;

	qp->usq.db_addr = ctx->dpi_addr + uresp.sq_db_offset;

	qp->urq.db_addr = ctx->dpi_addr + uresp.rq_db_offset;



	rc = qedr_db_recovery_add(dev, qp->usq.db_addr,

				  &qp->usq.db_rec_data->db_data,

				  DB_REC_WIDTH_32B,

				  DB_REC_USER);

	if (rc)

		goto err;



	rc = qedr_db_recovery_add(dev, qp->urq.db_addr,

				  &qp->urq.db_rec_data->db_data,

				  DB_REC_WIDTH_32B,

				  DB_REC_USER);

	if (rc)

		goto err;



	qedr_qp_user_print(dev, qp);



	return 0;

	return rc;

err:

	rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);

	if (rc)

		DP_ERR(dev, "create qp: fatal fault. rc=%d", rc);



err1:

	qedr_cleanup_user(dev, qp);

	qedr_cleanup_user(dev, ctx, qp);

	return rc;

}



static void qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp)

static int qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp)

{

	int rc;



	qp->sq.db = dev->db_addr +

	    DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);

	qp->sq.db_data.data.icid = qp->icid;



	rc = qedr_db_recovery_add(dev, qp->sq.db,

				  &qp->sq.db_data,

				  DB_REC_WIDTH_32B,

				  DB_REC_KERNEL);

	if (rc)

		return rc;



	qp->rq.db = dev->db_addr +

		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_IWARP_RQ_PROD);

	qp->rq.db_data.data.icid = qp->icid;
@@ -1652,6 +1852,12 @@ static void qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp) 
			   DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_FLAGS);

	qp->rq.iwarp_db2_data.data.icid = qp->icid;

	qp->rq.iwarp_db2_data.data.value = DQ_TCM_IWARP_POST_RQ_CF_CMD;



	rc = qedr_db_recovery_add(dev, qp->rq.db,

				  &qp->rq.db_data,

				  DB_REC_WIDTH_32B,

				  DB_REC_KERNEL);

	return rc;

}



static int
@@ -1699,8 +1905,7 @@ qedr_roce_create_kernel_qp(struct qedr_dev *dev, 
	qp->qp_id = out_params.qp_id;

	qp->icid = out_params.icid;



	qedr_set_roce_db_info(dev, qp);

	return rc;

	return qedr_set_roce_db_info(dev, qp);

}



static int
@@ -1758,8 +1963,7 @@ qedr_iwarp_create_kernel_qp(struct qedr_dev *dev, 
	qp->qp_id = out_params.qp_id;

	qp->icid = out_params.icid;



	qedr_set_iwarp_db_info(dev, qp);

	return rc;

	return qedr_set_iwarp_db_info(dev, qp);



err:

	dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
@@ -1774,6 +1978,15 @@ static void qedr_cleanup_kernel(struct qedr_dev *dev, struct qedr_qp *qp) 


	dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);

	kfree(qp->rqe_wr_id);



	/* GSI qp is not registered to db mechanism so no need to delete */

	if (qp->qp_type == IB_QPT_GSI)

		return;



	qedr_db_recovery_del(dev, qp->sq.db, &qp->sq.db_data);



	if (!qp->srq)

		qedr_db_recovery_del(dev, qp->rq.db, &qp->rq.db_data);

}



static int qedr_create_kernel_qp(struct qedr_dev *dev,
@@ -2414,7 +2627,10 @@ err: 
static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp,

				  struct ib_udata *udata)

{

	int rc = 0;

	struct qedr_ucontext *ctx =

		rdma_udata_to_drv_context(udata, struct qedr_ucontext,

					  ibucontext);

	int rc;



	if (qp->qp_type != IB_QPT_GSI) {

		rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
@@ -2423,7 +2639,7 @@ static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp, 
	}



	if (qp->create_type == QEDR_QP_CREATE_USER)

		qedr_cleanup_user(dev, qp);

		qedr_cleanup_user(dev, ctx, qp);

	else

		qedr_cleanup_kernel(dev, qp);

include/uapi/rdma/qedr-abi.h

+25 −0
Original line number Diff line number Diff line
@@ -38,6 +38,15 @@ 
#define QEDR_ABI_VERSION		(8)



/* user kernel communication data structures. */

enum qedr_alloc_ucontext_flags {

	QEDR_ALLOC_UCTX_RESERVED	= 1 << 0,

	QEDR_ALLOC_UCTX_DB_REC		= 1 << 1

};



struct qedr_alloc_ucontext_req {

	__u32 context_flags;

	__u32 reserved;

};



struct qedr_alloc_ucontext_resp {

	__aligned_u64 db_pa;
@@ -74,6 +83,7 @@ struct qedr_create_cq_uresp { 
	__u32 db_offset;

	__u16 icid;

	__u16 reserved;

	__aligned_u64 db_rec_addr;

};



struct qedr_create_qp_ureq {
@@ -109,6 +119,13 @@ struct qedr_create_qp_uresp { 


	__u32 rq_db2_offset;

	__u32 reserved;



	/* address of SQ doorbell recovery user entry */

	__aligned_u64 sq_db_rec_addr;



	/* address of RQ doorbell recovery user entry */

	__aligned_u64 rq_db_rec_addr;



};



struct qedr_create_srq_ureq {
@@ -128,4 +145,12 @@ struct qedr_create_srq_uresp { 
	__u32 reserved1;

};



/* doorbell recovery entry allocated and populated by userspace doorbelling

 * entities and mapped to kernel. Kernel uses this to register doorbell

 * information with doorbell drop recovery mechanism.

 */

struct qedr_user_db_rec {

	__aligned_u64 db_data; /* doorbell data */

};



#endif /* __QEDR_USER_H__ */

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