Any comments about this patch?

On 2018/3/2 14:36, Ming Huang wrote:
>
> On 2018/2/27 18:01, Ni, Ruiyu wrote:
>> On 2/27/2018 5:25 PM, Ming Huang wrote:
>>>
>>> On 2018/2/27 13:25, Ni, Ruiyu wrote:
>>>> I don't prefer to add PCD, unless we cannot find:
>>>> 1. spec content  to describe the max/min blocks
>>> There is no spec about the max/min blocks in my mind. I had checked this in
>>> several pdf document like
>>> Universal Serial Bus Mass Storage Class Specification Overview,
>>> Universal Serial Bus Mass Storage Specification For Bootability,
>>> Universal Serial Bus Mass Storage Class Bulk-Only Transport.
>>>> 2. error handling when the blocks number is bigger than HW expects.
>>> Where should error handling add to?  Error handing can't add to HW 
>>> (end-point device),
>>> because HW is not in our control scope.
>> I mean maybe spec describes an error status could be returned from HW when 
>> using 128. So that we can use 64, 32, and smaller value until HW is happy.
>>
>> I am curious how the other USB storage drivers handle this.
>> PCD is a static way. Dynamic way is more preferred.
>>
> When using 128,  after waiting 5x5(USB_BOOT_COMMAND_RETRY=5, 
> USB_BOOT_GENERAL_CMD_TIMEOUT=5) seconds,
> the UsbBootReadBlocks ->UsbBootExecCmdWithRetry retrun TimeOut. I don't know 
> why HW return Timeout.
> Booting time is to long if using Dynamic way to fix the issue.
> When using 64, It works and booting from HW succeed.
> May be using PCD is a simple and effective mean.
>
> Thanks
> Ming
>>>> Thanks/Ray
>>>>
>>>>> -----Original Message-----
>>>>> From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of
>>>>> Ming Huang
>>>>> Sent: Saturday, February 24, 2018 5:30 PM
>>>>> To: leif.lindh...@linaro.org; linaro-u...@lists.linaro.org; edk2-
>>>>> de...@lists.01.org; graeme.greg...@linaro.org; Zeng, Star
>>>>> <star.z...@intel.com>; Dong, Eric <eric.d...@intel.com>
>>>>> Cc: huangmin...@huawei.com; ard.biesheu...@linaro.org; Ming Huang
>>>>> <ming.hu...@linaro.org>; Gao, Liming <liming....@intel.com>;
>>>>> mengfanr...@huawei.com; guoh...@huawei.com;
>>>>> zhangjinso...@huawei.com; Kinney, Michael D
>>>>> <michael.d.kin...@intel.com>; wai...@126.com;
>>>>> wanghuiqi...@huawei.com; huangda...@hisilicon.com
>>>>> Subject: [edk2] [RFC v1 1/1] MdeModulePkg/Usb: Use Pcd for
>>>>> UsbBootIoBlocks
>>>>>
>>>>> Booting from USB may fail while the macro USB_BOOT_IO_BLOCKS set to 128
>>>>> because 128 blocks is exceeded the maximun blocks of some USB
>>>>> devices,like some virtual CD-ROM from BMC. So, give a chance to set the
>>>>> value of USB_BOOT_IO_BLOCKS by adding a Pcd.
>>>>>
>>>>> Contributed-under: TianoCore Contribution Agreement 1.1
>>>>> Signed-off-by: Ming Huang <ming.hu...@linaro.org>
>>>>> ---
>>>>>   MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h         | 7
>>>>> +++++--
>>>>>   MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf | 4
>>>>> ++++
>>>>>   MdeModulePkg/MdeModulePkg.dec                                | 4 ++++
>>>>>   MdeModulePkg/MdeModulePkg.uni                                | 4 ++++
>>>>>   4 files changed, 17 insertions(+), 2 deletions(-)
>>>>>
>>>>> diff --git a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
>>>>> b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
>>>>> index 5ee50ac52a21..ca9240adbd5f 100644
>>>>> --- a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
>>>>> +++ b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
>>>>> @@ -16,6 +16,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY
>>>>> KIND, EITHER EXPRESS OR IMPLIED.
>>>>>   #ifndef _EFI_USB_MASS_BOOT_H_
>>>>>   #define _EFI_USB_MASS_BOOT_H_
>>>>>
>>>>> +#include <Library/PcdLib.h>
>>>>> +
>>>>>   //
>>>>>   // The opcodes of various USB boot commands:
>>>>>   // INQUIRY/REQUEST_SENSE are "No Timeout Commands" as specified @@
>>>>> -66,9 +68,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY
>>>>> KIND, EITHER EXPRESS OR IMPLIED.
>>>>>   #define USB_PDT_SIMPLE_DIRECT           0x0E       ///< Simplified 
>>>>> direct access
>>>>> device
>>>>>
>>>>>   //
>>>>> -// Other parameters, Max carried size is 512B * 128 = 64KB
>>>>> +// Other parameters, Max carried size is depanded on Pcd.
>>>>> +// The default of PcdUsbBootIoBlocks is 128. 512B * 128 = 64KB
>>>>>   //
>>>>> -#define USB_BOOT_IO_BLOCKS              128
>>>>> +#define USB_BOOT_IO_BLOCKS              (FixedPcdGet32
>>>>> (PcdUsbBootIoBlocks))
>>>>>
>>>>>   //
>>>>>   // Retry mass command times, set by experience diff --git
>>>>> a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
>>>>> b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
>>>>> index 26d15c7679bf..40426512f884 100644
>>>>> ---
>>>>> a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
>>>>> +++
>>>>> b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
>>>>> @@ -60,6 +60,7 @@ [Sources]
>>>>>     UsbMassDiskInfo.c
>>>>>
>>>>>   [Packages]
>>>>> +  MdeModulePkg/MdeModulePkg.dec
>>>>>     MdePkg/MdePkg.dec
>>>>>
>>>>>   [LibraryClasses]
>>>>> @@ -83,5 +84,8 @@ [Protocols]
>>>>>   # EVENT_TYPE_RELATIVE_TIMER        ## CONSUMES
>>>>>   #
>>>>>
>>>>> +[FixedPcd]
>>>>> +  gEfiMdeModulePkgTokenSpaceGuid.PcdUsbBootIoBlocks
>>>>> +
>>>>>   [UserExtensions.TianoCore."ExtraFiles"]
>>>>>     UsbMassStorageDxeExtra.uni
>>>>> diff --git a/MdeModulePkg/MdeModulePkg.dec
>>>>> b/MdeModulePkg/MdeModulePkg.dec index 455979386e3f..fc40745315a0
>>>>> 100644
>>>>> --- a/MdeModulePkg/MdeModulePkg.dec
>>>>> +++ b/MdeModulePkg/MdeModulePkg.dec
>>>>> @@ -999,6 +999,10 @@ [PcdsFixedAtBuild]
>>>>>     # @Prompt Enable UEFI Stack Guard.
>>>>>
>>>>> gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard|FALSE|BOOLEAN|0
>>>>> x30001055
>>>>>
>>>>> +## The Max blocks of usb transfer. The default is 128.
>>>>> +# @Prompt The Max blocks of usb transfer
>>>>> +gEfiMdeModulePkgTokenSpaceGuid.PcdUsbBootIoBlocks|128|UINT32|0x0
>>>>> 000010B
>>>>> +
>>>>>   [PcdsFixedAtBuild, PcdsPatchableInModule]
>>>>>     ## Dynamic type PCD can be registered callback function for Pcd 
>>>>> setting
>>>>> action.
>>>>>     #  PcdMaxPeiPcdCallBackNumberPerPcdEntry indicates the maximum
>>>>> number of callback function diff --git a/MdeModulePkg/MdeModulePkg.uni
>>>>> b/MdeModulePkg/MdeModulePkg.uni index f3fa616438b0..c996d6b4ebe0
>>>>> 100644
>>>>> --- a/MdeModulePkg/MdeModulePkg.uni
>>>>> +++ b/MdeModulePkg/MdeModulePkg.uni
>>>>> @@ -1243,3 +1243,7 @@
>>>>>   #string
>>>>> STR_gEfiMdeModulePkgTokenSpaceGuid_PcdEdkiiFpdtStringRecordEnableO
>>>>> nly_HELP    #language en-US "Control which FPDT record format will be used
>>>>> to store the performance entry.\n"
>>>>>                                                                           
>>>>>                               "On TRUE, the string FPDT
>>>>> record will be used to store every performance entry.\n"
>>>>>                                                                           
>>>>>                               "On FALSE, the different
>>>>> FPDT record will be used to store the different performance entries."
>>>>> +
>>>>> +#string
>>>>> STR_gEfiMdeModulePkgTokenSpaceGuid_PcdUsbBootIoBlocks_PROMPT
>>>>> #language en-US "The Max blocks of usb transfer."
>>>>> +
>>>>> +#string
>>>>> STR_gEfiMdeModulePkgTokenSpaceGuid_PcdUsbBootIoBlocks_HELP
>>>>> #language en-US "The Max blocks of usb transfer. The default is 128."
>>>>> -- 
>>>>> 1.9.1
>>>>>
>>>>> _______________________________________________
>>>>> edk2-devel mailing list
>>>>> edk2-devel@lists.01.org
>>>>> https://lists.01.org/mailman/listinfo/edk2-devel
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>>

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