[PATCH v2 07/10] net/ngbe: add chip overheat support

[Jiawen Wu]

Support to handle overheat interrupt.

Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
 doc/guides/rel_notes/release_23_03.rst |  4 ++++
 drivers/net/ngbe/ngbe_ethdev.c         | 32 +++++++++++++++++++++++++-
 drivers/net/ngbe/ngbe_ethdev.h         |  1 +
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/doc/guides/rel_notes/release_23_03.rst 
b/doc/guides/rel_notes/release_23_03.rst
index b8c5b68d6c..9c61bdbdcb 100644
--- a/doc/guides/rel_notes/release_23_03.rst
+++ b/doc/guides/rel_notes/release_23_03.rst
@@ -55,6 +55,10 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Updated Wangxun ngbe driver.**
+
+  * Added chip overheat detection support.
+
 
 Removed Items
 -------------
diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index afdb3ad41f..c32d954769 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -947,7 +947,7 @@ ngbe_dev_phy_intr_setup(struct rte_eth_dev *dev)
        else
                wr32(hw, NGBE_GPIOINTPOL, NGBE_GPIOINTPOL_ACT(3));
 
-       intr->mask_misc |= NGBE_ICRMISC_GPIO;
+       intr->mask_misc |= NGBE_ICRMISC_GPIO | NGBE_ICRMISC_HEAT;
 }
 
 /*
@@ -1869,6 +1869,28 @@ ngbe_dev_supported_ptypes_get(struct rte_eth_dev *dev)
        return NULL;
 }
 
+static void
+ngbe_dev_overheat(struct rte_eth_dev *dev)
+{
+       struct ngbe_hw *hw = ngbe_dev_hw(dev);
+       s32 temp_state;
+
+       temp_state = hw->mac.check_overtemp(hw);
+       if (!temp_state)
+               return;
+
+       if (temp_state == NGBE_ERR_UNDERTEMP) {
+               PMD_DRV_LOG(CRIT, "Network adapter has been started again, "
+                       "since the temperature has been back to normal state.");
+               wr32m(hw, NGBE_PBRXCTL, NGBE_PBRXCTL_ENA, NGBE_PBRXCTL_ENA);
+               ngbe_dev_set_link_up(dev);
+       } else if (temp_state == NGBE_ERR_OVERTEMP) {
+               PMD_DRV_LOG(CRIT, "Network adapter has been stopped because it 
has over heated.");
+               wr32m(hw, NGBE_PBRXCTL, NGBE_PBRXCTL_ENA, 0);
+               ngbe_dev_set_link_down(dev);
+       }
+}
+
 void
 ngbe_dev_setup_link_alarm_handler(void *param)
 {
@@ -2167,6 +2189,9 @@ ngbe_dev_interrupt_get_status(struct rte_eth_dev *dev)
        if (eicr & NGBE_ICRMISC_GPIO)
                intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
 
+       if (eicr & NGBE_ICRMISC_HEAT)
+               intr->flags |= NGBE_FLAG_OVERHEAT;
+
        ((u32 *)hw->isb_mem)[NGBE_ISB_MISC] = 0;
 
        return 0;
@@ -2243,6 +2268,11 @@ ngbe_dev_interrupt_action(struct rte_eth_dev *dev)
                                RTE_ETH_EVENT_INTR_LSC, NULL);
        }
 
+       if (intr->flags & NGBE_FLAG_OVERHEAT) {
+               ngbe_dev_overheat(dev);
+               intr->flags &= ~NGBE_FLAG_OVERHEAT;
+       }
+
        PMD_DRV_LOG(DEBUG, "enable intr immediately");
        ngbe_enable_intr(dev);
 
diff --git a/drivers/net/ngbe/ngbe_ethdev.h b/drivers/net/ngbe/ngbe_ethdev.h
index 8d500fd38c..330f476f6f 100644
--- a/drivers/net/ngbe/ngbe_ethdev.h
+++ b/drivers/net/ngbe/ngbe_ethdev.h
@@ -17,6 +17,7 @@
 #define NGBE_FLAG_PHY_INTERRUPT     ((uint32_t)(1 << 2))
 #define NGBE_FLAG_MACSEC            ((uint32_t)(1 << 3))
 #define NGBE_FLAG_NEED_LINK_CONFIG  ((uint32_t)(1 << 4))
+#define NGBE_FLAG_OVERHEAT          ((uint32_t)(1 << 5))
 
 #define NGBE_VFTA_SIZE 128
 #define NGBE_HKEY_MAX_INDEX 10
-- 
2.27.0