On 23 March 2016 at 16:24, Ryan Harkin <[email protected]> wrote:
> On 23 March 2016 at 08:53, Laszlo Ersek <[email protected]> wrote:
>> On 03/23/16 09:33, Ni, Ruiyu wrote:
>>> Laszlo,
>>> Since the patch below lets SerialDxe driver use the new introduced
>>> PCD gEfiMdePkgTokenSpaceGuid.PcdUartDefaultReceiveFifoDepth.
>>> Would you mind to revert the check in @ 31ae446b
>>> --> MdeModulePkg: TerminalDxe: select the UART's default receive FIFO depth?
>>
>> If I understand correctly, this series increases the terminal polling
>> rate, so that cursor movement escape sequences (and other burst-like
>> sequences) can be processed even with a receive fifo depth of 1. Hence
>> 31ae446b should become unnecessary.
>>
>> If Ryan and Ard (CC'd), who tested 31ae446b originally, can also test
>> your revert of 31ae446b -- on top of this series from Heyi --, and the
>> cursor keys work with 31ae446b reverted, then I don't mind, sure.
>>
>
> Unfortunately TC2 and Juno no longer with with 31ae446b reverted and
> these 3 patches from the series applied.

I'm sure you would all work it out ok, but that should have been:

"Unfortunately TC2 and Juno no longer work with 31ae446b reverted and
these 3 patches from the series applied."


>
> It's a shame, because it works on FVP models and copy/paste then works.
>
> I haven't made any investigations on what's going wrong.  But regular
> ASCII keys work, control codes like cursor keys don't.  So it looks
> like the old FIFO setting problem we discussed a few weeks ago.
>
>
>> Thanks
>> Laszlo
>>
>>>
>>> Regards,
>>> Ray
>>>
>>>
>>>> -----Original Message-----
>>>> From: edk2-devel [mailto:[email protected]] On Behalf Of 
>>>> Heyi Guo
>>>> Sent: Thursday, March 17, 2016 10:37 PM
>>>> To: [email protected]
>>>> Cc: Heyi Guo <[email protected]>; Tian, Feng <[email protected]>; 
>>>> Zeng, Star <[email protected]>
>>>> Subject: [edk2] [PATCH v2 2/3] MdeModulePkg/SerialDxe: Set FIFO depth with 
>>>> PCD
>>>>
>>>> Set UART receive FIFO depth with PCD instead of fixed number "1".
>>>> The default value of PCD is also 1, so it makes no difference for
>>>> platforms which do not explicitly set this PCD.
>>>>
>>>> Contributed-under: TianoCore Contribution Agreement 1.0
>>>> Signed-off-by: Heyi Guo <[email protected]>
>>>> Cc: Feng Tian <[email protected]>
>>>> Cc: Star Zeng <[email protected]>
>>>> ---
>>>> MdeModulePkg/Universal/SerialDxe/SerialDxe.inf | 9 +++++----
>>>> MdeModulePkg/Universal/SerialDxe/SerialIo.c    | 3 ++-
>>>> 2 files changed, 7 insertions(+), 5 deletions(-)
>>>>
>>>> diff --git a/MdeModulePkg/Universal/SerialDxe/SerialDxe.inf 
>>>> b/MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
>>>> index 164060b..a1453bd 100644
>>>> --- a/MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
>>>> +++ b/MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
>>>> @@ -41,10 +41,11 @@
>>>>   gEfiDevicePathProtocolGuid    ## PRODUCES
>>>>
>>>> [Pcd]
>>>> -  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate ## CONSUMES
>>>> -  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits ## CONSUMES
>>>> -  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity   ## CONSUMES
>>>> -  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits ## CONSUMES
>>>> +  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate         ## CONSUMES
>>>> +  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits         ## CONSUMES
>>>> +  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity           ## CONSUMES
>>>> +  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits         ## CONSUMES
>>>> +  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultReceiveFifoDepth ## CONSUMES
>>>>
>>>> [Depex]
>>>>   TRUE
>>>> diff --git a/MdeModulePkg/Universal/SerialDxe/SerialIo.c 
>>>> b/MdeModulePkg/Universal/SerialDxe/SerialIo.c
>>>> index f5b3064..d2383e5 100644
>>>> --- a/MdeModulePkg/Universal/SerialDxe/SerialIo.c
>>>> +++ b/MdeModulePkg/Universal/SerialDxe/SerialIo.c
>>>> @@ -236,7 +236,7 @@ SerialReset (
>>>>   //
>>>>   // Set the Serial I/O mode
>>>>   //
>>>> -  This->Mode->ReceiveFifoDepth  = 1;
>>>> +  This->Mode->ReceiveFifoDepth  = PcdGet16 
>>>> (PcdUartDefaultReceiveFifoDepth);
>>>>   This->Mode->Timeout           = 1000 * 1000;
>>>>   This->Mode->BaudRate          = PcdGet64 (PcdUartDefaultBaudRate);
>>>>   This->Mode->DataBits          = (UINT32) PcdGet8 
>>>> (PcdUartDefaultDataBits);
>>>> @@ -508,6 +508,7 @@ SerialDxeInitialize (
>>>>   mSerialIoMode.DataBits = (UINT32) PcdGet8 (PcdUartDefaultDataBits);
>>>>   mSerialIoMode.Parity   = (UINT32) PcdGet8 (PcdUartDefaultParity);
>>>>   mSerialIoMode.StopBits = (UINT32) PcdGet8 (PcdUartDefaultStopBits);
>>>> +  mSerialIoMode.ReceiveFifoDepth = PcdGet16 
>>>> (PcdUartDefaultReceiveFifoDepth);
>>>>   mSerialDevicePath.Uart.BaudRate = PcdGet64 (PcdUartDefaultBaudRate);
>>>>   mSerialDevicePath.Uart.DataBits = PcdGet8 (PcdUartDefaultDataBits);
>>>>   mSerialDevicePath.Uart.Parity   = PcdGet8 (PcdUartDefaultParity);
>>>> --
>>>> 2.7.0
>>>>
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>>
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