[edk2-devel] [PATCH] Ps2KbdCtrller: Make wait for SUCCESS after BAT non-fatal

[Sean Rhodes]

Hi Ray

Would you be able to review please? :)

Thanks

Sean


On Fri, 18 Feb 2022 at 02:16, Wu, Hao A <hao.a.wu at intel.com> wrote:

> Acked-by: Hao A Wu <hao.a.wu at intel.com>
> I recommend to get Ray's input for this patch before merging.
>
> Best Regards,
> Hao Wu
>
> > -----Original Message-----
> > From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Sean
> > Rhodes
> > Sent: Friday, February 11, 2022 4:05 PM
> > To: devel at edk2.groups.io
> > Cc: Dong, Guo <guo.dong at intel.com>; Matt DeVillier
> > <matt.devillier at gmail.com>; Wu, Hao A <hao.a.wu at intel.com>; Ni, Ray
> > <ray.ni at intel.com>; Rhodes, Sean <sean at starlabs.systems>
> > Subject: [edk2-devel] [PATCH] Ps2KbdCtrller: Make wait for SUCCESS after
> > BAT non-fatal
> >
> > From: Matt DeVillier <matt.devillier at gmail.com>
> >
> > Recent model Chromebooks only return ACK, but not
> > BAT_SUCCESS, which causes hanging and failed ps2k init.
> > To mitigate this, make the absence of BAT_SUCCESS reply
> > non-fatal, and reduce the no-reply timeout from 4s to 1s.
> >
> > Tested on google/dracia and purism/librem_14
> >
> > Cc: Hao A Wu <hao.a.wu at intel.com>
> > Cc: Ray Ni <ray.ni at intel.com>
> > Signed-off-by: Matt DeVillier <matt.devillier at gmail.com>
> > Signed-off-by: Sean Rhodes <sean at starlabs.systems>
> > ---
> >  MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c | 6 +-----
> >  MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h   | 2 +-
> >  2 files changed, 2 insertions(+), 6 deletions(-)
> >
> > diff --git a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
> > b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
> > index 77dc226222..6c71355edd 100644
> > --- a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
> > +++ b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
> > @@ -1733,11 +1733,7 @@ InitKeyboard (
> >      //
> >
> >      mWaitForValueTimeOut = KEYBOARD_BAT_TIMEOUT;
> >
> >
> >
> > -    Status = KeyboardWaitForValue (ConsoleIn,
> > KEYBOARD_8048_RETURN_8042_BAT_SUCCESS);
> >
> > -    if (EFI_ERROR (Status)) {
> >
> > -      KeyboardError (ConsoleIn, L"Keyboard self test failed!\n\r");
> >
> > -      goto Done;
> >
> > -    }
> >
> > +    KeyboardWaitForValue (ConsoleIn,
> > KEYBOARD_8048_RETURN_8042_BAT_SUCCESS);
> >
> >
> >
> >      mWaitForValueTimeOut = KEYBOARD_WAITFORVALUE_TIMEOUT;
> >
> >
> >
> > diff --git a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
> > b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
> > index ca1dd9b2c2..38df3e092d 100644
> > --- a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
> > +++ b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
> > @@ -157,7 +157,7 @@ InstallPs2KeyboardDriver (
> >  #define KEYBOARD_MAX_TRY                 256     // 256
> >
> >  #define KEYBOARD_TIMEOUT                 65536   // 0.07s
> >
> >  #define KEYBOARD_WAITFORVALUE_TIMEOUT    1000000 // 1s
> >
> > -#define KEYBOARD_BAT_TIMEOUT             4000000 // 4s
> >
> > +#define KEYBOARD_BAT_TIMEOUT             1000000 // 1s
> >
> >  #define KEYBOARD_TIMER_INTERVAL          200000  // 0.02s
> >
> >  #define SCANCODE_EXTENDED0               0xE0
> >
> >  #define SCANCODE_EXTENDED1               0xE1
> >
> > --
> > 2.32.0
> >
> >
> >
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>
>


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