Re: [edk2-devel] [PATCH v6 edk2-platforms 1/1] Silicon/Synopsys/Designware/Driver: DwEmacSnpDxe: Add DesignWare EMAC driver

["Ooi, Tzy Way" <tzy.way.ooi@intel.com>]

Hi Leif,

I am new to the compilation tools. May I know if you can share to me how to run the compilation with Debian's gcc 8.3 so that I can see the same warning described below? Currently, I am using linaro toolchain 7.2.1 and follow the guide in the link below to compile the source code.
https://github.com/tianocore/edk2-platforms

I am not able to see any warning in the compilation messages. Wonder if I need to enable something, for example some CFLAGS during compilation?

Thank you in advance.

Best regards,
Tzy Way

-----Original Message-----
From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Leif Lindholm
Sent: Friday, July 12, 2019 12:43 AM
To: Ooi, Tzy Way <tzy.way.ooi@intel.com>
Cc: devel@edk2.groups.io; Ard BieSheuvel <ard.biesheuvel@linaro.org>; Kinney, Michael D <michael.d.kinney@intel.com>; Loh, Tien Hock <tien.hock.loh@intel.com>
Subject: Re: [edk2-devel] [PATCH v6 edk2-platforms 1/1] Silicon/Synopsys/Designware/Driver: DwEmacSnpDxe: Add DesignWare EMAC driver

Hi Tzy Way,

Nearly there, but please make sure BaseTools/Scripts/PatchCheck.py runs without warnings or errors (there are quite a few still in this version).

Building the .dsc using current edk2 fails with 'MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf is not found in packages path'
The path needs to be updated to NetworkPkg/Library/DxeNetLib/DxeNetLib.inf.

Secondly, could you add NOOPT as a BUILD_TARGET, in addition to DEBUG and RELEASE?

Also, Debian's gcc 8.3 throws a set of compilation errors (both DEBUG and RELEASE) when building for AARCH64:

/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c: In function <E2><80><98>EmacSetupTxdesc<E2><80><99>:
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c:236:81: error: iteration 9 invokes undefined behavior [-Werror=aggressive-loop-optimizations]
     TxDescriptor->AddrNext = (UINT32)(UINTN)EmacDriver->TxdescRingMap[Index + 1].AddrMap;
                                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c:233:3: note: within this loop
   for (Index = 0; Index < CONFIG_TX_DESCR_NUM; Index++) {
   ^~~
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c: In function <E2><80><98>EmacSetupRxdesc<E2><80><99>:
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c:270:81: error: iteration 9 invokes undefined behavior [-Werror=aggressive-loop-optimizations]
     RxDescriptor->AddrNext = (UINT32)(UINTN)EmacDriver->RxdescRingMap[Index + 1].AddrMap;
                                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c:267:3: note: within this loop
   for (Index = 0; Index < CONFIG_RX_DESCR_NUM; Index++) {
   ^~~
cc1: all warnings being treated as errors


It also throws the following errors when building for ARM:
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/DwEmacSnpDxe.c: In function <E2><80><98>SnpTransmit<E2><80><99>:
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/DwEmacSnpDxe.c:962:21: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
   TxDescriptorMap = (VOID *)Snp->MacDriver.TxdescRingMap[DescNum].AddrMap;
                     ^
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/DwEmacSnpDxe.c:1026:51: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
     Snp->RecycledTxBuf[Snp->RecycledTxBufCount] = (UINT64) Data;
                                                   ^
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/DwEmacSnpDxe.c: In function <E2><80><98>SnpReceive<E2><80><99>:
/work/git/edk2-platforms/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/DwEmacSnpDxe.c:1143:21: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
   RxDescriptorMap = (VOID *)Snp->MacDriver.RxdescRingMap[DescNum].AddrMap;
                     ^
cc1: all warnings being treated as errors


Could you please look into and address these issues for the next version?

Best Regards,

Leif

On Mon, Jul 08, 2019 at 03:05:07PM +0800, tzy.way.ooi@intel.com wrote:
> From: Ooi Tzy Way <tzy.way.ooi@intel.com>
> 
> Add driver support for the Ethernet MAC based on Synopsys DesignWare
> 3504-0 Universal 10/100/1000 Ethernet MAC and KSZ9031 PHY
> 
> Cc: Ard BieSheuvel <ard.biesheuvel@linaro.org>
> Cc: Leif Lindholm <leif.lindholm@linaro.org>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Loh Tien Hock <tien.hock.loh@intel.com>
> 
> Contributed-under: Tianocore Contribution Agreement 1.1
> Signed-off-by: Ooi Tzy Way <tzy.way.ooi@intel.com>
> 
> ---
> v6:
> - Update to recent version for EDK2 specific file formats
> - Update the directory layout to Silicon/Synopsys/DesignWare
> - Add a DesignWare.dsc for building this driver
> - Update the license
> - Update the .c file to declare its own include file
> - Remove __ in defining the header file
> - Fix indentation
> - Delete commented-out code