There's an issue that X710 can't receive any packet after
reading some special registers. That's because these
registers are only valid for X722, read access for non-X722
will cause ECC error.
Fixes: d9efd0136ac1 ("i40e: add EEPROM and registers dumping")
Cc: sta...@dpdk.org
Signed-off-by: Beilei Xing <beilei.x...@intel.com>
---
drivers/net/i40e/i40e_ethdev.c | 33 +++++++++++++++++++++++++++++++--
1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 1c77906..686227e 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -11609,6 +11609,31 @@ i40e_dev_rx_queue_intr_disable(struct rte_eth_dev
*dev, uint16_t queue_id)
return 0;
}
+/**
+ * This function is used to check if the register is valid for non-X722 NIC.
+ * Below is the valid registers list for X722 only:
+ * 0x2b800--0x2bb00
+ * 0x38700--0x38a00
+ * 0x3d800--0x3db00
+ * 0x208e00--0x209000
+ * 0x20be00--0x20c000
+ * 0x263c00--0x264000
+ * 0x265c00--0x266000
+ */
+static inline int i40e_valid_regs(uint32_t reg_offset)
+{
+ if (((reg_offset >= 0x2b800) && (reg_offset <= 0x2bb00)) ||
+ ((reg_offset >= 0x38700) && (reg_offset <= 0x38a00)) ||
+ ((reg_offset >= 0x3d800) && (reg_offset <= 0x3db00)) ||
+ ((reg_offset >= 0x208e00) && (reg_offset <= 0x209000)) ||
+ ((reg_offset >= 0x20be00) && (reg_offset <= 0x20c000)) ||
+ ((reg_offset >= 0x263c00) && (reg_offset <= 0x264000)) ||
+ ((reg_offset >= 0x265c00) && (reg_offset <= 0x266000)))
+ return 0;
+ else
+ return 1;
+}
+
static int i40e_get_regs(struct rte_eth_dev *dev,
struct rte_dev_reg_info *regs)
{
@@ -11650,8 +11675,12 @@ static int i40e_get_regs(struct rte_eth_dev *dev,
reg_offset = arr_idx * reg_info->stride1 +
arr_idx2 * reg_info->stride2;
reg_offset += reg_info->base_addr;
- ptr_data[reg_offset >> 2] =
- I40E_READ_REG(hw, reg_offset);
+ if ((hw->mac.type != I40E_MAC_X722) &&
+ !i40e_valid_regs(reg_offset))
+ ptr_data[reg_offset >> 2] = 0;
+ else
+ ptr_data[reg_offset >> 2] =
+ I40E_READ_REG(hw, reg_offset);
}
}
--
2.5.5
