diff options
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_common.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c index a40b8f37d48f..4fa31d87d9d2 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_common.c +++ b/drivers/net/ethernet/intel/i40e/i40e_common.c @@ -1208,6 +1208,29 @@ static enum i40e_media_type i40e_get_media_type(struct i40e_hw *hw) return media; } +/** + * i40e_poll_globr - Poll for Global Reset completion + * @hw: pointer to the hardware structure + * @retry_limit: how many times to retry before failure + **/ +static i40e_status i40e_poll_globr(struct i40e_hw *hw, + u32 retry_limit) +{ + u32 cnt, reg = 0; + + for (cnt = 0; cnt < retry_limit; cnt++) { + reg = rd32(hw, I40E_GLGEN_RSTAT); + if (!(reg & I40E_GLGEN_RSTAT_DEVSTATE_MASK)) + return 0; + msleep(100); + } + + hw_dbg(hw, "Global reset failed.\n"); + hw_dbg(hw, "I40E_GLGEN_RSTAT = 0x%x\n", reg); + + return I40E_ERR_RESET_FAILED; +} + #define I40E_PF_RESET_WAIT_COUNT_A0 200 #define I40E_PF_RESET_WAIT_COUNT 200 /** @@ -1284,14 +1307,14 @@ i40e_status i40e_pf_reset(struct i40e_hw *hw) if (!(reg & I40E_PFGEN_CTRL_PFSWR_MASK)) break; reg2 = rd32(hw, I40E_GLGEN_RSTAT); - if (reg2 & I40E_GLGEN_RSTAT_DEVSTATE_MASK) { - hw_dbg(hw, "Core reset upcoming. Skipping PF reset request.\n"); - hw_dbg(hw, "I40E_GLGEN_RSTAT = 0x%x\n", reg2); - return I40E_ERR_NOT_READY; - } + if (reg2 & I40E_GLGEN_RSTAT_DEVSTATE_MASK) + break; usleep_range(1000, 2000); } - if (reg & I40E_PFGEN_CTRL_PFSWR_MASK) { + if (reg2 & I40E_GLGEN_RSTAT_DEVSTATE_MASK) { + if (i40e_poll_globr(hw, grst_del)) + return I40E_ERR_RESET_FAILED; + } else if (reg & I40E_PFGEN_CTRL_PFSWR_MASK) { hw_dbg(hw, "PF reset polling failed to complete.\n"); return I40E_ERR_RESET_FAILED; } |