[edk2-devel] [PATCH v4 0/2] MdeModulePkg/SdMmcHcDxe: Implement revision 3 of SdMmcOverrideProtocol

Marcin Wojtas mw at semihalf.com
Fri Jun 28 08:57:33 UTC 2019 

Hi Mateusz,



pt., 28 cze 2019 o 10:12 Albecki, Mateusz <mateusz.albecki at intel.com>
napisał(a):

> Hi,
>
>
>
> Do you use override driver with this SD controller(if yes and it is open
> source could you provide the link)?
>

[MW] Of course it's open source
https://github.com/tianocore/edk2-platforms/tree/master/Silicon/Marvell/Drivers/SdMmc/XenonDxe

The platform is Armada70x0Db.dsc from the same edk2-platforms repo.



> There is one change introduced in this patch that might require changes in
> the override driver. We have added enumeration for SdMmcSdDs and SdMmcSdHs
> modes which were so far indicated to override drivers as SdMmcUhsSdr12 and
> SdMmcUhsSdr25 respectively so if there were any actions that were necessary
> for high speed to work and those were done only for SdMmcUhsSdr25 then that
> might be the reason for regression.
>
>
>

[MW] Now, that was the reason. This interface required special handling for
high speed. This patch fixed it:
https://pastebin.com/rdRe9wAh

I will submit it after your patchset is merged.

Best regards,
Marcin


> Thanks,
>
> Mateusz
>
>
>
> *From:* devel at edk2.groups.io [mailto:devel at edk2.groups.io] *On Behalf Of *Marcin
> Wojtas
> *Sent:* Friday, June 28, 2019 9:42 AM
> *To:* Wu, Hao A <hao.a.wu at intel.com>
> *Cc:* Albecki, Mateusz <mateusz.albecki at intel.com>; Sumit Garg <
> sumit.garg at linaro.org>; Ard Biesheuvel <ard.biesheuvel at linaro.org>;
> edk2-devel-groups-io <devel at edk2.groups.io>
> *Subject:* Re: [edk2-devel] [PATCH v4 0/2] MdeModulePkg/SdMmcHcDxe:
> Implement revision 3 of SdMmcOverrideProtocol
>
>
>
> Hi Hao,
>
>
>
> pt., 28 cze 2019 o 09:23 Wu, Hao A <hao.a.wu at intel.com> napisał(a):
>
> Hello Marcin,
>
>
>
> Do you mean by only reverting as below:
>
> -  SdMmcCmdBlk.CommandArgument = (AccessMode & 0xF) | ((CommandSystem &
> 0xF) << 4) | \
>
> -                                ((DriverStrength & 0xF) << 8) | ((
> PowerLimit & 0xF) << 12) | \
>
> +  SdMmcCmdBlk.CommandArgument = (AccessMode & 0xF) | ((PowerLimit & 0xF)
> << 4) | \^M
>
> +                                ((DriverStrength & 0xF) << 8) |
> ((DriverStrength & 0xF) << 12) | \^M
>
>                                  ModeValue;
>
>
>
> All your devices work fine?
>
>
>
> Since the origin code is clearly not correct (DriveStrength used 2 times,
>
> the offset of PowerLimit is not 4, should be 12 according to SD spec).
>
>
>
> Ok, just rechecked. It doesn't help for my 1 problematic case. Anyway for
> the next time I think it may be worth to split some improvements out of
> such big patches.
>
>
>
> I won't be able to debug my board until second week of July (at best), so
> in order not to block you please go ahead with merging (the most important
> board (MacchiatoBin) seems not suffer any regression).
>
>
>
> Best regards,
>
> Marcin
>
>
>
>
>
> Best Regards,
>
> Hao Wu
>
>
>
> *From:* Marcin Wojtas [mailto:mw at semihalf.com]
> *Sent:* Friday, June 28, 2019 2:33 PM
> *To:* Wu, Hao A; Albecki, Mateusz
> *Cc:* Sumit Garg; Ard Biesheuvel; edk2-devel-groups-io
> *Subject:* Re: [edk2-devel] [PATCH v4 0/2] MdeModulePkg/SdMmcHcDxe:
> Implement revision 3 of SdMmcOverrideProtocol
>
>
>
> Hi,
>
>
>
> I was almost happily sending you email with 'tested-by' information, but I
> checked 3 boards:
>
> Board 1 (out of tree): SD - OK, MMC - OK
>
> Board 2: (Armada80x0McBin): SD - OK, MMC - OK
>
> Board 3: (Armada70x0Db): SD - problems, MMC - OK
>
>
>
> In the latter case I get stall and booting takes around 3 minutes.
>
> Without "MdeModulePkg/SdMmcHcDxe: Implement revision 3 of
> SdMmcOverrideProtocol" patch it works as before.
>
>
>
> I enabled debugs, and in theory everything seems fine, the DriverStrength
> is set to EDKII_SD_MMC_DRIVER_STRENGTH_IGNORE.
>
> SdCardIdentification: Found a SD device at slot [0]
>
> SdCardSetBusMode: Target bus mode: bus timing = 1, bus width = 4, clock
> freq[MHz] = 50, driver strength = 255
>
>
>
> However right after Csd register dump the booting stalls until printing
> following and continuing:
>
> FatOpenDevice: read of part_lba failed Time out
>
>
>
> This is absent from the prints I dumped from vanilla kernel. Despite I
> currently really have no time to additional debug, I checked and with
> following diff, everything works as before:
>
>
>
> --- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
>
> +++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
>
> @@ -536,8 +536,8 @@ SdCardSwitch (
>
>        AccessMode = 0xF;
>
>    }
>
>
>
> -  SdMmcCmdBlk.CommandArgument = (AccessMode & 0xF) | ((CommandSystem &
> 0xF) << 4) | \
>
> -                                ((DriverStrength & 0xF) << 8) | ((
> PowerLimit & 0xF) << 12) | \
>
> +  SdMmcCmdBlk.CommandArgument = (AccessMode & 0xF) | ((PowerLimit & 0xF)
> << 4) | \^M
>
> +                                ((DriverStrength & 0xF) << 8) |
> ((DriverStrength & 0xF) << 12) | \^M
>
>                                  ModeValue;
>
>
>
> Above is restoring SdMmcCmdBlk.CommandArgument to the state from before
> the patch in question. Now the question - why the layout of the command
> changed? CommandSystem was unused before, and PowerLimit changed its
> position. Is this change really related to the rest of the patch? What is
> the justification?
>
>
>
> Best regards,
>
> Marcin
>
>
>
>
>
> pt., 28 cze 2019 o 02:57 Wu, Hao A <hao.a.wu at intel.com> napisał(a):
>
> > -----Original Message-----
> > From: Sumit Garg [mailto:sumit.garg at linaro.org]
> > Sent: Thursday, June 27, 2019 9:39 PM
> > To: Ard Biesheuvel
> > Cc: edk2-devel-groups-io; Wu, Hao A; Marcin Wojtas; Albecki, Mateusz
> > Subject: Re: [edk2-devel] [PATCH v4 0/2] MdeModulePkg/SdMmcHcDxe:
> > Implement revision 3 of SdMmcOverrideProtocol
> >
> > On Thu, 27 Jun 2019 at 13:40, Ard Biesheuvel <ard.biesheuvel at linaro.org>
> > wrote:
> > >
> > > (+ Sumit)
> > >
> > > On Thu, 27 Jun 2019 at 08:29, Wu, Hao A <hao.a.wu at intel.com> wrote:
> > > >
> > > > > -----Original Message-----
> > > > > From: Marcin Wojtas [mailto:mw at semihalf.com]
> > > > > Sent: Thursday, June 27, 2019 2:25 PM
> > > > > To: Albecki, Mateusz
> > > > > Cc: edk2-devel-groups-io; Wu, Hao A
> > > > > Subject: Re: [edk2-devel] [PATCH v4 0/2]
> > MdeModulePkg/SdMmcHcDxe:
> > > > > Implement revision 3 of SdMmcOverrideProtocol
> > > > >
> > > > > Hi Mateusz,
> > > > >
> > > > > Can you please push those patches somewhere (github?) so that I
> can
> > > > > easily do a quick check for regression?
> > > > >
> > > > > Thanks,
> > > > > Marcin
> > > >
> > > >
> > > > Hello Marcin,
> > > >
> > > > I have just pushed the series at:
> > > > https://github.com/hwu25/edk2/tree/sdmmc_override_extend_v4
> > > >
> > > > Please help to check.
> > > >
> > >
> > > I have cc'ed my colleague Sumit, who has kindly agreed to regression
> > > test this branch on Socionext SynQuacer, which also uses the SD/MMC
> > > override infrastructure.
> > >
> > > Sumit, please reply here with your results. And thanks again!
> >
> > I did picked this patch-set and applied on top of edk2 master branch.
> > It works well on SynQuacer with eMMC device enumerated properly and
> > all three eMMC partitions are visible:
> >
> >      BLK4: Alias(s):
> >           VenHw(0D51905B-B77E-452A-A2C0-
> > ECA0CC8D514A,000030520000000000)/eMMC(0x
> > 0)/Ctrl(0x0)
> >      BLK5: Alias(s):
> >           VenHw(0D51905B-B77E-452A-A2C0-
> > ECA0CC8D514A,000030520000000000)/eMMC(0x
> > 0)/Ctrl(0x1)
> >      BLK6: Alias(s):
> >           VenHw(0D51905B-B77E-452A-A2C0-
> > ECA0CC8D514A,000030520000000000)/eMMC(0x
> > 0)/Ctrl(0x2)
> >
> > Shell> devices
> > <snip>
> >   E9 D - -  1  1   0 VenHw(0D51905B-B77E-452A-A2C0-
> > ECA0CC8D514A,0000305200000000
> > 00)/eMMC(0x0)/Ctrl(0x0)
> >   EA D - -  1  1   0 VenHw(0D51905B-B77E-452A-A2C0-
> > ECA0CC8D514A,0000305200000000
> > 00)/eMMC(0x0)/Ctrl(0x1)
> >   EB D - -  1  1   0 VenHw(0D51905B-B77E-452A-A2C0-
> > ECA0CC8D514A,0000305200000000
> > 00)/eMMC(0x0)/Ctrl(0x2)
> >
> > So you can add following:
> >
> > Regression-tested-by: Sumit Garg <sumit.garg at linaro.org>
>
>
> Thanks a lot for the testing.
>
> Best Regards,
> Hao Wu
>
>
> >
> > -Sumit
>
> 
>
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