回复: 回复: [edk2-devel] [edk2-devel202105 PATCH v2 1/1] ArmPkg/ArmGic: Fix maximum number of interrupts in GICv3

["gaoliming" <gaoliming@byosoft.com.cn>]

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Got it. Thanks!

 

Liming

发件人: Sami Mujawar <sami.mujawar@arm.com> 
发送时间: 2021年5月27日 18:13
收件人: devel@edk2.groups.io; Laszlo Ersek <lersek@redhat.com>; gaoliming <gaoliming@byosoft.com.cn>
抄送: ardb@kernel.org; leif@nuviainc.com; Matteo Carlini <Matteo.Carlini@arm.com>; Andreas Sandberg <Andreas.Sandberg@arm.com>; Joey Gouly <Joey.Gouly@arm.com>; nd <nd@arm.com>; philmd@redhat.com
主题: Re: 回复: [edk2-devel] [edk2-devel202105 PATCH v2 1/1] ArmPkg/ArmGic: Fix maximum number of interrupts in GICv3

 

Hi All,

I have pushed this change to edk2 master at cfa6ffb113f2..e1999b264f1f

Regards,

Sami Mujawar

 

On 27/05/2021 10:19 AM, Sami Mujawar via groups.io wrote:

Hi Laszlo, Liming,

 

Apologies for not doing it earlier. I was not sure if it was within my right to merge the change.

I will merge this in the next 2 hours.

 

Regards,

 

Sami Mujawar

 

 

From: Laszlo Ersek  <mailto:lersek@redhat.com> <lersek@redhat.com>
Date: Thursday, 27 May 2021 at 09:50
To: gaoliming  <mailto:gaoliming@byosoft.com.cn> <gaoliming@byosoft.com.cn>, devel@edk2.groups.io <mailto:devel@edk2.groups.io>   <mailto:devel@edk2.groups.io> <devel@edk2.groups.io>, Sami Mujawar  <mailto:Sami.Mujawar@arm.com> <Sami.Mujawar@arm.com>
Cc: ardb@kernel.org <mailto:ardb@kernel.org>   <mailto:ardb@kernel.org> <ardb@kernel.org>, leif@nuviainc.com <mailto:leif@nuviainc.com>   <mailto:leif@nuviainc.com> <leif@nuviainc.com>, Matteo Carlini  <mailto:Matteo.Carlini@arm.com> <Matteo.Carlini@arm.com>, Andreas Sandberg  <mailto:Andreas.Sandberg@arm.com> <Andreas.Sandberg@arm.com>, Joey Gouly  <mailto:Joey.Gouly@arm.com> <Joey.Gouly@arm.com>, nd  <mailto:nd@arm.com> <nd@arm.com>
Subject: Re: 回复: [edk2-devel] [edk2-devel202105 PATCH v2 1/1] ArmPkg/ArmGic: Fix maximum number of interrupts in GICv3

Hi Liming,

On 05/27/21 04:32, gaoliming wrote:
> If no objection, I will merge this patch today. Then, tomorrow, I will create stable tag 202105. 

yes, please do that -- TBH, I thought Sami would merge it sooner, as
Sami does have maintainer access through DynamicTablesPkg and
StandaloneMmPkg.

Thanks!
Laszlo

> 
> Thanks
> Liming
>> -----邮件原件-----
>> 发件人: devel@edk2.groups.io <mailto:devel@edk2.groups.io>   <mailto:devel@edk2.groups.io> <devel@edk2.groups.io> 代表 gaoliming
>> 发送时间: 2021年5月26日 10:22
>> 收件人: devel@edk2.groups.io <mailto:devel@edk2.groups.io> ; lersek@redhat.com <mailto:lersek@redhat.com> ;
>> sami.mujawar@arm.com <mailto:sami.mujawar@arm.com> 
>> 抄送: ardb@kernel.org <mailto:ardb@kernel.org> ; leif@nuviainc.com <mailto:leif@nuviainc.com> ; Matteo.Carlini@arm.com <mailto:Matteo.Carlini@arm.com> ;
>> Andreas.Sandberg@arm.com <mailto:Andreas.Sandberg@arm.com> ; joey.gouly@arm.com <mailto:joey.gouly@arm.com> ; nd@arm.com <mailto:nd@arm.com> 
>> 主题: 回复: [edk2-devel] [edk2-devel202105 PATCH v2 1/1] ArmPkg/ArmGic:
>> Fix maximum number of interrupts in GICv3
>>
>> Laszlo, Ard, Sami:
>>   I am OK to merge this patch for stable tag 202105.
>>
>> Thanks
>> Liming
>>> -----邮件原件-----
>>> 发件人: devel@edk2.groups.io <mailto:devel@edk2.groups.io>   <mailto:devel@edk2.groups.io> <devel@edk2.groups.io> 代表 Laszlo
>> Ersek
>>> 发送时间: 2021年5月25日 19:55
>>> 收件人: devel@edk2.groups.io <mailto:devel@edk2.groups.io> ; sami.mujawar@arm.com <mailto:sami.mujawar@arm.com> 
>>> 抄送: ardb@kernel.org <mailto:ardb@kernel.org> ; leif@nuviainc.com <mailto:leif@nuviainc.com> ; Matteo.Carlini@arm.com <mailto:Matteo.Carlini@arm.com> ;
>>> Andreas.Sandberg@arm.com <mailto:Andreas.Sandberg@arm.com> ; joey.gouly@arm.com <mailto:joey.gouly@arm.com> ; nd@arm.com <mailto:nd@arm.com> 
>>> 主题: Re: [edk2-devel] [edk2-devel202105 PATCH v2 1/1] ArmPkg/ArmGic:
>>> Fix maximum number of interrupts in GICv3
>>>
>>> Hi Sami,
>>>
>>> On 05/24/21 15:01, Sami Mujawar wrote:
>>>> From: Andreas Sandberg  <mailto:andreas.sandberg@arm.com> <andreas.sandberg@arm.com>
>>>>
>>>> Bugzilla: 3415 (https://bugzilla.tianocore.org/show_bug.cgi?id=3415)
>>>>
>>>> The GICv3 architecture supports up to 1020 ordinary interrupt
>>>> lines. The actual number of interrupts supported is described by the
>>>> ITLinesNumber field in the GICD_TYPER register. The total number of
>>>> implemented registers is normally calculated as
>>>> 32*(ITLinesNumber+1). However, maximum value (0x1f) is a special case
>>>> since that would indicate that 1024 interrupts are implemented.
>>>>
>>>> Add handling for this special case in ArmGicGetMaxNumInterrupts.
>>>>
>>>> Signed-off-by: Andreas Sandberg  <mailto:andreas.sandberg@arm.com> <andreas.sandberg@arm.com>
>>>> Signed-off-by: Joey Gouly  <mailto:joey.gouly@arm.com> <joey.gouly@arm.com>
>>>> Signed-off-by: Sami Mujawar  <mailto:sami.mujawar@arm.com> <sami.mujawar@arm.com>
>>>> Reviewed-by: Ard Biesheuvel  <mailto:ardb@kernel.org> <ardb@kernel.org>
>>>> ---
>>>> The changes can be seen at:
>>>> https://github.com/samimujawar/edk2/tree/1396_gic_max_num_intr_v2
>>>>
>>>> Notes:
>>>>     v2:
>>>>       - Fix comment style.
>>> [Laszlo]
>>>>       - Updated comment style.
>>> [Sami]
>>>>
>>>>  ArmPkg/Drivers/ArmGic/ArmGicLib.c | 11 +++++++++--
>>>>  1 file changed, 9 insertions(+), 2 deletions(-)
>>>
>>> I think this patch should be merged really soon, as long as Ard agrees.
>>>
>>> Thanks,
>>> Laszlo
>>>
>>>>
>>>> diff --git a/ArmPkg/Drivers/ArmGic/ArmGicLib.c
>>> b/ArmPkg/Drivers/ArmGic/ArmGicLib.c
>>>> index
>>>
>> 6b01c88206ad8adef3100dd44c0d57660db77783..bd4b5edb903f3846f4f0e43
>>> 1f93e001f01cd9e7d 100644
>>>> --- a/ArmPkg/Drivers/ArmGic/ArmGicLib.c
>>>> +++ b/ArmPkg/Drivers/ArmGic/ArmGicLib.c
>>>> @@ -1,6 +1,6 @@
>>>>  /** @file
>>>>  *
>>>> -*  Copyright (c) 2011-2018, ARM Limited. All rights reserved.
>>>> +*  Copyright (c) 2011-2021, Arm Limited. All rights reserved.
>>>>  *
>>>>  *  SPDX-License-Identifier: BSD-2-Clause-Patent
>>>>  *
>>>> @@ -120,7 +120,14 @@ ArmGicGetMaxNumInterrupts (
>>>>    IN  INTN          GicDistributorBase
>>>>    )
>>>>  {
>>>> -  return 32 * ((MmioRead32 (GicDistributorBase + ARM_GIC_ICDICTR) &
>>> 0x1F) + 1);
>>>> +  UINTN ItLines;
>>>> +
>>>> +  ItLines = MmioRead32 (GicDistributorBase + ARM_GIC_ICDICTR) &
>>> 0x1F;
>>>> +
>>>> +  //
>>>> +  // Interrupt ID 1020-1023 are reserved.
>>>> +  //
>>>> +  return (ItLines == 0x1f) ? 1020 : 32 * (ItLines + 1);
>>>>  }
>>>>
>>>>  VOID
>>>>
>>>
>>>
>>>
>>>
>>>
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> 
> 
> 



 


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