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e1000e: Handshake with CSME starts from ADL platforms

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commit cad014b7b5 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: 3e55d23171 ("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>
This commit is contained in:
Sasha Neftin
2021-12-07 13:23:42 +02:00
committed by Greg Kroah-Hartman
parent 6be2349177
commit 03f42c8ef6
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/intel/e1000e/netdev.c
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@@ -6346,7 +6346,8 @@ static void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter)
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 e1000_adapter *adapter)
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;