[PATCH v1] net/zxdh: add pcie bar channel check

[PATCH v1] net/zxdh: add pcie bar channel check

[Tianhao Zhang]

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Add pcie bar channel check after getting dtb space left.

Signed-off-by: Tianhao Zhang <zhang.tianhao2@zte.com.cn>
---
 drivers/net/zxdh/zxdh_np.c | 7 +++++++
 drivers/net/zxdh/zxdh_np.h | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/drivers/net/zxdh/zxdh_np.c b/drivers/net/zxdh/zxdh_np.c
index 024da113e2..4e2637e1b6 100644
--- a/drivers/net/zxdh/zxdh_np.c
+++ b/drivers/net/zxdh/zxdh_np.c
@@ -3698,6 +3698,13 @@ zxdh_np_dtb_queue_unused_item_num_get(uint32_t dev_id,
 	rc = zxdh_np_reg_read(dev_id, ZXDH_DTB_INFO_QUEUE_BUF_SPACE,
 		0, queue_id, p_item_num);
 	ZXDH_COMM_CHECK_DEV_RC(dev_id, rc, "dpp_reg_read");
+
+	if((*p_item_num & ZXDH_DTB_SPACE_LEFT_MASK) == ZXDH_DTB_SPACE_LEFT_MASK)
+    {
+		PMD_DRV_LOG(ERR, "pcie bar abnormal, get dtb space left false.");
+        return ZXDH_RC_DTB_BAR_ABNORMAL;
+    }
+	
 	return rc;
 }
 
diff --git a/drivers/net/zxdh/zxdh_np.h b/drivers/net/zxdh/zxdh_np.h
index b0823192e7..5b9aec9c8f 100644
--- a/drivers/net/zxdh/zxdh_np.h
+++ b/drivers/net/zxdh/zxdh_np.h
@@ -94,6 +94,7 @@
 #define ZXDH_DTB_TAB_ACK_SUCCESS_MASK            (0xff)
 #define ZXDH_DTB_TAB_ACK_FAILED_MASK             (0x1)
 #define ZXDH_DTB_TAB_ACK_CHECK_VALUE             (0x12345678)
+#define ZXDH_DTB_SPACE_LEFT_MASK                 (0x3F)
 
 #define ZXDH_DTB_TAB_ACK_VLD_SHIFT               (104)
 #define ZXDH_DTB_TAB_ACK_STATUS_SHIFT            (96)
@@ -321,6 +322,7 @@
 #define ZXDH_RC_DTB_DUMP_SIZE_SMALL             (ZXDH_RC_DTB_BASE | 0x16)
 #define ZXDH_RC_DTB_SEARCH_VPORT_QUEUE_ZERO     (ZXDH_RC_DTB_BASE | 0x17)
 #define ZXDH_RC_DTB_QUEUE_NOT_ENABLE            (ZXDH_RC_DTB_BASE | 0x18)
+#define ZXDH_RC_DTB_BAR_ABNORMAL                (ZXDH_RC_DTB_BASE | 0x19)
 
 #define ZXDH_RC_CTRLCH_BASE                     (0xf00)
 #define ZXDH_RC_CTRLCH_MSG_LEN_ZERO             (ZXDH_RC_CTRLCH_BASE | 0x0)
-- 
2.27.0

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