diff mbox series

[v2,1/5] e1000e: fix S0ix flow to allow S0i3.2 subset entry

Message ID 20201202161748.128938-2-mario.limonciello@dell.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Improve s0ix flows for systems i219LM | expand

Checks

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netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Guessed tree name to be net-next
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 28 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Limonciello, Mario Dec. 2, 2020, 4:17 p.m. UTC
From: Vitaly Lifshits <vitaly.lifshits@intel.com>

Changed a configuration in the flows to align with
architecture requirements to achieve S0i3.2 substate.

Also fixed a typo in the previous commit 632fbd5eb5b0
("e1000e: fix S0ix flows for cable connected case").

Signed-off-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Bjorn Helgaas Dec. 2, 2020, 8:10 p.m. UTC | #1
On Wed, Dec 02, 2020 at 10:17:44AM -0600, Mario Limonciello wrote:
> From: Vitaly Lifshits <vitaly.lifshits@intel.com>
> 
> Changed a configuration in the flows to align with
> architecture requirements to achieve S0i3.2 substate.

I guess this is really talking about requirements of a specific
CPU/SOC before it will enter S0i3.2?

> Also fixed a typo in the previous commit 632fbd5eb5b0
> ("e1000e: fix S0ix flows for cable connected case").

Not clear what the typo was, maybe these?

  > -	ew32(FEXTNVM12, mac_data);
  > +	ew32(FEXTNVM6, mac_data);

  > -	ew32(FEXTNVM12, mac_data);
  > +	ew32(FEXTNVM6, mac_data);

I would probably have put typo fixes in a separate patch, especially
since the cover letter mentions regressions related to 632fbd5eb5b0.
Maybe the commit log for the fix should mention that it's fixing a
regression, what the regression was, and include a Fixes: tag?  But
not my circus.

> Signed-off-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
> Tested-by: Aaron Brown <aaron.f.brown@intel.com>
> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
> ---
>  drivers/net/ethernet/intel/e1000e/netdev.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
> index b30f00891c03..128ab6898070 100644
> --- a/drivers/net/ethernet/intel/e1000e/netdev.c
> +++ b/drivers/net/ethernet/intel/e1000e/netdev.c
> @@ -6475,13 +6475,13 @@ static void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter)
>  
>  	/* Ungate PGCB clock */
>  	mac_data = er32(FEXTNVM9);
> -	mac_data |= BIT(28);
> +	mac_data &= ~BIT(28);
>  	ew32(FEXTNVM9, mac_data);
>  
>  	/* Enable K1 off to enable mPHY Power Gating */
>  	mac_data = er32(FEXTNVM6);
>  	mac_data |= BIT(31);
> -	ew32(FEXTNVM12, mac_data);
> +	ew32(FEXTNVM6, mac_data);
>  
>  	/* Enable mPHY power gating for any link and speed */
>  	mac_data = er32(FEXTNVM8);
> @@ -6525,11 +6525,11 @@ static void e1000e_s0ix_exit_flow(struct e1000_adapter *adapter)
>  	/* Disable K1 off */
>  	mac_data = er32(FEXTNVM6);
>  	mac_data &= ~BIT(31);
> -	ew32(FEXTNVM12, mac_data);
> +	ew32(FEXTNVM6, mac_data);
>  
>  	/* Disable Ungate PGCB clock */
>  	mac_data = er32(FEXTNVM9);
> -	mac_data &= ~BIT(28);
> +	mac_data |= BIT(28);
>  	ew32(FEXTNVM9, mac_data);
>  
>  	/* Cancel not waking from dynamic
> -- 
> 2.25.1
>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index b30f00891c03..128ab6898070 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -6475,13 +6475,13 @@  static void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter)
 
 	/* Ungate PGCB clock */
 	mac_data = er32(FEXTNVM9);
-	mac_data |= BIT(28);
+	mac_data &= ~BIT(28);
 	ew32(FEXTNVM9, mac_data);
 
 	/* Enable K1 off to enable mPHY Power Gating */
 	mac_data = er32(FEXTNVM6);
 	mac_data |= BIT(31);
-	ew32(FEXTNVM12, mac_data);
+	ew32(FEXTNVM6, mac_data);
 
 	/* Enable mPHY power gating for any link and speed */
 	mac_data = er32(FEXTNVM8);
@@ -6525,11 +6525,11 @@  static void e1000e_s0ix_exit_flow(struct e1000_adapter *adapter)
 	/* Disable K1 off */
 	mac_data = er32(FEXTNVM6);
 	mac_data &= ~BIT(31);
-	ew32(FEXTNVM12, mac_data);
+	ew32(FEXTNVM6, mac_data);
 
 	/* Disable Ungate PGCB clock */
 	mac_data = er32(FEXTNVM9);
-	mac_data &= ~BIT(28);
+	mac_data |= BIT(28);
 	ew32(FEXTNVM9, mac_data);
 
 	/* Cancel not waking from dynamic