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RDMA/bnxt_re: Get the toggle bits from SRQ events

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SRQ arming requires the toggle bits received from hardware.
Get the toggle bits from SRQ notification for the
gen p7 adapters. This value will be zero for the older adapters.

Signed-off-by: Hongguang Gao <hongguang.gao@broadcom.com>
Signed-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1724945645-14989-2-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Hongguang Gao 2024-08-29 08:34:03 -07:00 committed by Leon Romanovsky
parent e012316d83
commit 640c2cf84e
3 changed files with 13 additions and 0 deletions
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1
drivers/infiniband/hw/bnxt_re/ib_verbs.h
View File

@ -77,6 +77,7 @@ struct bnxt_re_srq {
struct bnxt_qplib_srq qplib_srq;
struct ib_umem *umem;
spinlock_t lock; /* protect srq */
void *uctx_srq_page;
};
struct bnxt_re_qp {

11
drivers/infiniband/hw/bnxt_re/qplib_fp.c
View File

@ -54,6 +54,10 @@
#include "qplib_rcfw.h"
#include "qplib_sp.h"
#include "qplib_fp.h"
#include <rdma/ib_addr.h>
#include "bnxt_ulp.h"
#include "bnxt_re.h"
#include "ib_verbs.h"
static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);
@ -347,6 +351,7 @@ static void bnxt_qplib_service_nq(struct tasklet_struct *t)
case NQ_BASE_TYPE_SRQ_EVENT:
{
struct bnxt_qplib_srq *srq;
struct bnxt_re_srq *srq_p;
struct nq_srq_event *nqsrqe =
(struct nq_srq_event *)nqe;
@ -354,6 +359,12 @@ static void bnxt_qplib_service_nq(struct tasklet_struct *t)
q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
<< 32;
srq = (struct bnxt_qplib_srq *)q_handle;
srq->toggle = (le16_to_cpu(nqe->info10_type) & NQ_CN_TOGGLE_MASK)
>> NQ_CN_TOGGLE_SFT;
srq->dbinfo.toggle = srq->toggle;
srq_p = container_of(srq, struct bnxt_re_srq, qplib_srq);
if (srq_p->uctx_srq_page)
*((u32 *)srq_p->uctx_srq_page) = srq->toggle;
bnxt_qplib_armen_db(&srq->dbinfo,
DBC_DBC_TYPE_SRQ_ARMENA);
if (nq->srqn_handler(nq,

1
drivers/infiniband/hw/bnxt_re/qplib_fp.h
View File

@ -105,6 +105,7 @@ struct bnxt_qplib_srq {
struct bnxt_qplib_sg_info sg_info;
u16 eventq_hw_ring_id;
spinlock_t lock; /* protect SRQE link list */
u8 toggle;
};
struct bnxt_qplib_sge {