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net/i40e: fix X710 Rx after reading some registers

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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: d9efd0136a ("i40e: add EEPROM and registers dumping")
Cc: stable@dpdk.org

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
This commit is contained in:
Beilei Xing 2018-11-15 11:17:02 +08:00 committed by Ferruh Yigit
parent 1a81dce780
commit 199efc4ac5
1 changed files with 31 additions and 2 deletions
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33
drivers/net/i40e/i40e_ethdev.c
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@ -11609,6 +11609,32 @@ 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.
* 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(enum i40e_mac_type type, uint32_t reg_offset)
{
if ((type != I40E_MAC_X722) &&
((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 +11676,11 @@ 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 (!i40e_valid_regs(hw->mac.type, reg_offset))
ptr_data[reg_offset >> 2] = 0;
else
ptr_data[reg_offset >> 2] =
I40E_READ_REG(hw, reg_offset);
}
}