diff options
Diffstat (limited to 'drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c')
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c index b3f8dc299b29..c391f2155054 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c @@ -28,3 +28,117 @@ u64 fbnic_stat_rd64(struct fbnic_dev *fbd, u32 reg, u32 offset) */ return ((u64)upper << 32); } + +static void fbnic_hw_stat_rst64(struct fbnic_dev *fbd, u32 reg, s32 offset, + struct fbnic_stat_counter *stat) +{ + /* Record initial counter values and compute deltas from there to ensure + * stats start at 0 after reboot/reset. This avoids exposing absolute + * hardware counter values to userspace. + */ + stat->u.old_reg_value_64 = fbnic_stat_rd64(fbd, reg, offset); +} + +static void fbnic_hw_stat_rd64(struct fbnic_dev *fbd, u32 reg, s32 offset, + struct fbnic_stat_counter *stat) +{ + u64 new_reg_value; + + new_reg_value = fbnic_stat_rd64(fbd, reg, offset); + stat->value += new_reg_value - stat->u.old_reg_value_64; + stat->u.old_reg_value_64 = new_reg_value; +} + +static void fbnic_reset_pcie_stats_asic(struct fbnic_dev *fbd, + struct fbnic_pcie_stats *pcie) +{ + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_TLP_CNT_31_0, + 1, + &pcie->ob_rd_tlp); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DWORD_CNT_31_0, + 1, + &pcie->ob_rd_dword); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_CPL_TLP_CNT_31_0, + 1, + &pcie->ob_cpl_tlp); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_CPL_DWORD_CNT_31_0, + 1, + &pcie->ob_cpl_dword); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_WR_TLP_CNT_31_0, + 1, + &pcie->ob_wr_tlp); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_WR_DWORD_CNT_31_0, + 1, + &pcie->ob_wr_dword); + + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_TAG_31_0, + 1, + &pcie->ob_rd_no_tag); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_CPL_CRED_31_0, + 1, + &pcie->ob_rd_no_cpl_cred); + fbnic_hw_stat_rst64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_NP_CRED_31_0, + 1, + &pcie->ob_rd_no_np_cred); +} + +static void fbnic_get_pcie_stats_asic64(struct fbnic_dev *fbd, + struct fbnic_pcie_stats *pcie) +{ + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_TLP_CNT_31_0, + 1, + &pcie->ob_rd_tlp); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DWORD_CNT_31_0, + 1, + &pcie->ob_rd_dword); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_WR_TLP_CNT_31_0, + 1, + &pcie->ob_wr_tlp); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_WR_DWORD_CNT_31_0, + 1, + &pcie->ob_wr_dword); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_CPL_TLP_CNT_31_0, + 1, + &pcie->ob_cpl_tlp); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_CPL_DWORD_CNT_31_0, + 1, + &pcie->ob_cpl_dword); + + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_TAG_31_0, + 1, + &pcie->ob_rd_no_tag); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_CPL_CRED_31_0, + 1, + &pcie->ob_rd_no_cpl_cred); + fbnic_hw_stat_rd64(fbd, + FBNIC_PUL_USER_OB_RD_DBG_CNT_NP_CRED_31_0, + 1, + &pcie->ob_rd_no_np_cred); +} + +void fbnic_reset_hw_stats(struct fbnic_dev *fbd) +{ + fbnic_reset_pcie_stats_asic(fbd, &fbd->hw_stats.pcie); +} + +void fbnic_get_hw_stats(struct fbnic_dev *fbd) +{ + fbnic_get_pcie_stats_asic64(fbd, &fbd->hw_stats.pcie); +} |