From: Sasha Neftin sasha.neftin@intel.com
commit cad014b7b5a6897d8c4fad13e2888978bfb7a53f upstream.
Handshake with CSME/AMT on none provisioned platforms during S0ix flow is not supported on TGL platform and can cause to HW unit hang. Update the handshake with CSME flow to start from the ADL platform.
Fixes: 3e55d231716e ("e1000e: Add handshake with the CSME to support S0ix") Signed-off-by: Sasha Neftin sasha.neftin@intel.com Tested-by: Nechama Kraus nechamax.kraus@linux.intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/intel/e1000e/netdev.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -6346,7 +6346,8 @@ static void e1000e_s0ix_entry_flow(struc u32 mac_data; u16 phy_data;
- if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID) { + if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID && + hw->mac.type >= e1000_pch_adp) { /* Request ME configure the device for S0ix */ mac_data = er32(H2ME); mac_data |= E1000_H2ME_START_DPG; @@ -6495,7 +6496,8 @@ static void e1000e_s0ix_exit_flow(struct u16 phy_data; u32 i = 0;
- if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID) { + if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID && + hw->mac.type >= e1000_pch_adp) { /* Request ME unconfigure the device from S0ix */ mac_data = er32(H2ME); mac_data &= ~E1000_H2ME_START_DPG;