diff mbox series

[3/3] net/hns3: fix the VF reset interrupted possibly

Message ID 20231127133903.1138657-4-huangdengdui@huawei.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers
Series fix some bug for hns3 |

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Commit Message

Dengdui Huang Nov. 27, 2023, 1:39 p.m. UTC 
  Currently, the VF reset interrupt is enabled before the reset
process is completed. If the VF reset is triggered by an IMP
reset, the initialization of IMP is may not completed, and the
VF reset interrupt may continue to be reported. In this scenario,
the VF reset being performed by the driver does not need to be
interrupted. Therefore, for VF reset, the driver has to enable
the interrupt after the end of reset.

Fixes: a5475d61fa3 ("net/hns3: support VF")
Cc: stable@dpdk.org

Signed-off-by: Dengdui Huang <huangdengdui@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.h    | 12 ++++++++++++
 drivers/net/hns3/hns3_ethdev_vf.c | 19 +++++++++++++++++--
 drivers/net/hns3/hns3_intr.c      |  6 ++----
 3 files changed, 31 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 668f141e32..12d8299def 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -1035,6 +1035,7 @@  void hns3vf_update_link_status(struct hns3_hw *hw, uint8_t link_status,
 			  uint32_t link_speed, uint8_t link_duplex);
 void hns3vf_update_push_lsc_cap(struct hns3_hw *hw, bool supported);
 void hns3_clear_reset_event(struct hns3_hw *hw);
+void hns3vf_clear_reset_event(struct hns3_hw *hw);
 
 const char *hns3_get_media_type_name(uint8_t media_type);
 
@@ -1049,4 +1050,15 @@  is_reset_pending(struct hns3_adapter *hns)
 	return ret;
 }
 
+static inline void
+hns3_clear_reset_status(struct hns3_hw *hw)
+{
+	struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
+
+	if (hns->is_vf)
+		hns3vf_clear_reset_event(hw);
+	else
+		hns3_clear_reset_event(hw);
+}
+
 #endif /* HNS3_ETHDEV_H */
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 156fb905f9..53bcc44161 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -531,6 +531,19 @@  hns3vf_enable_irq0(struct hns3_hw *hw)
 	hns3_write_dev(hw, HNS3_MISC_VECTOR_REG_BASE, 1);
 }
 
+void
+hns3vf_clear_reset_event(struct hns3_hw *hw)
+{
+	uint32_t clearval;
+	uint32_t cmdq_stat_reg;
+
+	cmdq_stat_reg = hns3_read_dev(hw, HNS3_VECTOR0_CMDQ_STAT_REG);
+	clearval = cmdq_stat_reg & ~BIT(HNS3_VECTOR0_RST_INT_B);
+	hns3_write_dev(hw, HNS3_VECTOR0_CMDQ_SRC_REG, clearval);
+
+	hns3vf_enable_irq0(hw);
+}
+
 static enum hns3vf_evt_cause
 hns3vf_check_event_cause(struct hns3_adapter *hns, uint32_t *clearval)
 {
@@ -605,8 +618,10 @@  hns3vf_interrupt_handler(void *param)
 		break;
 	}
 
-	/* Enable interrupt */
-	hns3vf_enable_irq0(hw);
+	/* Enable interrupt if it is not cause by reset */
+	if (event_cause == HNS3VF_VECTOR0_EVENT_MBX ||
+	    event_cause == HNS3VF_VECTOR0_EVENT_OTHER)
+		hns3vf_enable_irq0(hw);
 }
 
 void
diff --git a/drivers/net/hns3/hns3_intr.c b/drivers/net/hns3/hns3_intr.c
index 52b5435a23..916bf30dcb 100644
--- a/drivers/net/hns3/hns3_intr.c
+++ b/drivers/net/hns3/hns3_intr.c
@@ -2749,8 +2749,7 @@  hns3_reset_post(struct hns3_adapter *hns)
 		/* IMP will wait ready flag before reset */
 		hns3_notify_reset_ready(hw, false);
 		hns3_clear_reset_level(hw, &hw->reset.pending);
-		if (!hns->is_vf)
-			hns3_clear_reset_event(hw);
+		hns3_clear_reset_status(hw);
 		__atomic_store_n(&hns->hw.reset.resetting, 0, __ATOMIC_RELAXED);
 		hw->reset.attempts = 0;
 		hw->reset.stats.success_cnt++;
@@ -2800,8 +2799,7 @@  hns3_reset_fail_handle(struct hns3_adapter *hns)
 	struct timeval tv;
 
 	hns3_clear_reset_level(hw, &hw->reset.pending);
-	if (!hns->is_vf)
-		hns3_clear_reset_event(hw);
+	hns3_clear_reset_status(hw);
 	if (hns3_reset_err_handle(hns)) {
 		hw->reset.stage = RESET_STAGE_PREWAIT;
 		hns3_schedule_reset(hns);