[PATCH for-next 1/2] RDMA/bnxt_re: Pass the context for ulp_irq_stop

[Selvin Xavier <selvin.xavier@broadcom.com>]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

ulp_irq_stop() can be invoked from a context where FW is healthy or
when FW is in a reset state. In the latter case, ULP must stop all
interactions with HW/FW and also with application and stack. Added a
new parameter to the ulp_irq_stop() function to achieve that.

Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
 drivers/infiniband/hw/bnxt_re/main.c          | 12 +++++++++++-
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c |  5 ++++-
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h |  2 +-
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 1988bf88..33956fc 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -83,6 +83,8 @@ static int bnxt_re_hwrm_qcaps(struct bnxt_re_dev *rdev);
 
 static int bnxt_re_hwrm_qcfg(struct bnxt_re_dev *rdev, u32 *db_len,
 			     u32 *offset);
+static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp,
+				   u8 port_num, enum ib_event_type event);
 static void bnxt_re_set_db_offset(struct bnxt_re_dev *rdev)
 {
 	struct bnxt_qplib_chip_ctx *cctx;
@@ -411,7 +413,7 @@ static void bnxt_re_async_notifier(void *handle, struct hwrm_async_event_cmpl *c
 	}
 }
 
-static void bnxt_re_stop_irq(void *handle)
+static void bnxt_re_stop_irq(void *handle, bool reset)
 {
 	struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(handle);
 	struct bnxt_qplib_rcfw *rcfw;
@@ -422,6 +424,14 @@ static void bnxt_re_stop_irq(void *handle)
 	rdev = en_info->rdev;
 	rcfw = &rdev->rcfw;
 
+	if (reset) {
+		set_bit(ERR_DEVICE_DETACHED, &rdev->rcfw.cmdq.flags);
+		set_bit(BNXT_RE_FLAG_ERR_DEVICE_DETACHED, &rdev->flags);
+		wake_up_all(&rdev->rcfw.cmdq.waitq);
+		bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
+				       IB_EVENT_DEVICE_FATAL);
+	}
+
 	for (indx = BNXT_RE_NQ_IDX; indx < rdev->nqr->num_msix; indx++) {
 		nq = &rdev->nqr->nq[indx - 1];
 		bnxt_qplib_nq_stop_irq(nq, false);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index 59c2806..8541e8d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -297,6 +297,7 @@ void bnxt_ulp_irq_stop(struct bnxt *bp)
 {
 	struct bnxt_en_dev *edev = bp->edev;
 	struct bnxt_ulp_ops *ops;
+	bool reset = false;
 
 	if (!edev || !(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
 		return;
@@ -310,7 +311,9 @@ void bnxt_ulp_irq_stop(struct bnxt *bp)
 		ops = rtnl_dereference(ulp->ulp_ops);
 		if (!ops || !ops->ulp_irq_stop)
 			return;
-		ops->ulp_irq_stop(ulp->handle);
+		if (test_bit(BNXT_STATE_FW_RESET_DET, &bp->state))
+			reset = true;
+		ops->ulp_irq_stop(ulp->handle, reset);
 	}
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
index a21294c..45f3571 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
@@ -32,7 +32,7 @@ struct bnxt_msix_entry {
 struct bnxt_ulp_ops {
 	/* async_notifier() cannot sleep (in BH context) */
 	void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *);
-	void (*ulp_irq_stop)(void *);
+	void (*ulp_irq_stop)(void *, bool);
 	void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
 };
 
-- 
2.5.5