Re: [PATCH 0/3] MdeModulePkg/SdMmcPciHcDxe: Retry the commands that failed due to CRC error

["Albecki, Mateusz" <mateusz.albecki@intel.com>]

Missed github info:

Clean patch series is here: https://github.com/malbecki/edk2/tree/sdmmc_retries
Patch series with the applied CRC simulation code is here: https://github.com/malbecki/edk2/tree/sdmmc_retries_with_test_code

Thanks,
Mateusz

> -----Original Message-----
> From: Albecki, Mateusz <mateusz.albecki@intel.com>
> Sent: Tuesday, January 7, 2020 12:06 PM
> To: devel@edk2.groups.io
> Cc: Albecki, Mateusz <mateusz.albecki@intel.com>; Wu, Hao A
> <hao.a.wu@intel.com>; Marcin Wojtas <mw@semihalf.com>; Gao, Zhichao
> <zhichao.gao@intel.com>; Gao, Liming <liming.gao@intel.com>
> Subject: [PATCH 0/3] MdeModulePkg/SdMmcPciHcDxe: Retry the
> commands that failed due to CRC error
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1140
> 
> Some of the boards report that just after we change the clock frequency to
> 200MHz link is unable to stabilize fast enough and when driver sends the
> CMD13 it will often fail randomly with CRC error. To protect against this kind
> of random failures this patch series will make the driver retry the commands
> that failed due to random CRC errors.
> 
> Since async code has not yet been tested it has been put into separate patch.
> That patch is not needed to solve most pressing CMD13 issues.
> 
> Tets performed:
> -Boot eMMC in HS400
> -Boot eMMC in HS400 with simulated CRC error on every first CMD13
> 
> Cc: Hao A Wu <hao.a.wu@intel.com>
> Cc: Marcin Wojtas <mw@semihalf.com>
> Cc: Zhichao Gao <zhichao.gao@intel.com>
> Cc: Liming Gao <liming.gao@intel.com>
> 
> Signed-off-by: Mateusz Albecki <mateusz.albecki@intel.com>
> 
> Mateusz Albecki (3):
>   MdeModulePkg/SdMmcPciHcDxe: Refactor command error detection
>   MdeModulePkg/SdMmcPciHcDxe: Add retries for sync commands
>   MdeModulePkg/SdMmcPciHcDxe: Add retries for async commands
> 
>  MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c |  89 +++++---
>  MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.h |   5 +-
>  MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.c   | 235
> ++++++++++++++-------
>  3 files changed, 221 insertions(+), 108 deletions(-)
> 
> --
> 2.14.1.windows.1

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