Send CMD12 to stop transimission for accessing multiple blocks. It's required by SD Card protocol.
Cc: Star Zeng <[email protected]> Cc: Eric Dong <[email protected]> Cc: Ruiyu Ni <[email protected]> Cc: Leif Lindholm <[email protected]> Cc: Ard Biesheuvel <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Haojian Zhuang <[email protected]> --- MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c b/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c index 516c3e704288..64259f99f9bc 100644 --- a/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c +++ b/MdeModulePkg/Bus/Sd/SdDxe/SdBlockIo.c @@ -426,6 +426,36 @@ Error: return Status; } +EFI_STATUS +SdStopTrans ( + IN SD_DEVICE *Device + ) +{ + EFI_STATUS Status; + EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru; + EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk; + EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk; + EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet; + + PassThru = Device->Private->PassThru; + + ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk)); + ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk)); + ZeroMem (&Packet, sizeof (Packet)); + + Packet.SdMmcCmdBlk = &SdMmcCmdBlk; + Packet.SdMmcStatusBlk = &SdMmcStatusBlk; + Packet.Timeout = SD_GENERIC_TIMEOUT; + + SdMmcCmdBlk.CommandIndex = SD_STOP_TRANSMISSION; + SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc; + SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1b; + SdMmcCmdBlk.CommandArgument = 0; + + Status = PassThru->PassThru (PassThru, Device->Slot, &Packet, NULL); + return Status; +} + /** Read/write multiple blocks through sync or async I/O request. @@ -555,6 +585,11 @@ Error: } } + if (EFI_ERROR (Status)) { + return Status; + } + + Status = SdStopTrans (Device); return Status; } -- 2.7.4 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
