Re: [Linaro-uefi] [PATCH v2 2/5] Drivers/SdMmc: Import SdMmcPciHcDxe driver

18 Nov 2016

On Fri, Nov 18, 2016 at 05:37:27PM +0100, Marcin Wojtas wrote:
...
From: Jan Dąbroś jsd@semihalf.com
Import SdMmcPciHcDxe.c from tianocore/edk2 tree at revision
a5991c8832c5: "IntelSiliconPkg: Add PCD for Graphics VBT FFS GUID" and
rename it as MvSdMmcPciHcDxe.c
Because Marvell Xenon SD/MMC controller isn't fully compatible with
SDHCI specification, it demands some quirks on generic driver during
initialization and command processing. In order to achieve that,
MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.c is imported and
adjusted correctly in following commit. Also in next patch's commit
message necessary changes to generic driver are listed.
Xenon SD/MMC controller is present on Marvell Armada70x0 SoCs.
EFI_D_INFO, EFI_D_VERBOSE, EFI_D_WARN and EFI_D_ERROR are replaced
with currently recommended values.
Urgh. Please don't do that. We've been bitten too many times by things
moving and something being changed as part of that move.
Or rather, please do that - but as a separate patch following this.
(And while you're at it, why not send that patch against the
MdeModulePkg version as well?)
I care not in the least about those PatchCheck.py warnings on the
import commit.
Regards,
Leif
...
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jan Dabros jsd@semihalf.com
Signed-off-by: Marcin Wojtas mw@semihalf.com

Drivers/SdMmc/Xenon/MvComponentName.c        |  211 +++
 Drivers/SdMmc/Xenon/MvEmmcDevice.c           | 1162 ++++++++++++++++
 Drivers/SdMmc/Xenon/MvSdDevice.c             | 1190 ++++++++++++++++
 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.c        | 1316 ++++++++++++++++++
 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.h        |  785 +++++++++++
 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.inf      |   72 +
 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.uni      |   23 +
 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxeExtra.uni |   19 +
 Drivers/SdMmc/Xenon/MvSdMmcPciHci.c          | 1923 ++++++++++++++++++++++++++
 Drivers/SdMmc/Xenon/MvSdMmcPciHci.h          |  546 ++++++++
 10 files changed, 7247 insertions(+)
 create mode 100644 Drivers/SdMmc/Xenon/MvComponentName.c
 create mode 100755 Drivers/SdMmc/Xenon/MvEmmcDevice.c
 create mode 100644 Drivers/SdMmc/Xenon/MvSdDevice.c
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.c
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.h
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.inf
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.uni
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHcDxeExtra.uni
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHci.c
 create mode 100644 Drivers/SdMmc/Xenon/MvSdMmcPciHci.h

diff --git a/Drivers/SdMmc/Xenon/MvComponentName.c b/Drivers/SdMmc/Xenon/MvComponentName.c
new file mode 100644
index 0000000..3329929
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvComponentName.c
@@ -0,0 +1,211 @@
+/** @file

UEFI Component Name(2) protocol implementation for SD/MMC host controller driver.

Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.


+**/



+#include "SdMmcPciHcDxe.h"



+//
+// EFI Component Name Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gSdMmcPciHcComponentName = {

SdMmcPciHcComponentNameGetDriverName,
SdMmcPciHcComponentNameGetControllerName,
"eng"

+};



+//
+// EFI Component Name 2 Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gSdMmcPciHcComponentName2 = {

(EFI_COMPONENT_NAME2_GET_DRIVER_NAME)     SdMmcPciHcComponentNameGetDriverName,
(EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) SdMmcPciHcComponentNameGetControllerName,
"en"

+};



+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mSdMmcPciHcDriverNameTable[] = {

{ "eng;en", L"Edkii Sd/Mmc Host Controller Driver" },
{ NULL , NULL }

+};



+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mSdMmcPciHcControllerNameTable[] = {

{ "eng;en", L"Edkii Sd/Mmc Host Controller" },
{ NULL , NULL }

+};



+/**

Retrieves a Unicode string that is the user readable name of the driver.

This function retrieves the user readable name of a driver in the form of a
Unicode string. If the driver specified by This has a user readable name in
the language specified by Language, then a pointer to the driver name is
returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
by This does not support the language specified by Language,
then EFI_UNSUPPORTED is returned.

@param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
                           EFI_COMPONENT_NAME_PROTOCOL instance.



@param  Language[in]          A pointer to a Null-terminated ASCII string
                           array indicating the language. This is the


                           language of the driver name that the caller is


                           requesting, and it must match one of the


                           languages specified in SupportedLanguages. The


                           number of languages supported by a driver is up


                           to the driver writer. Language is specified


                           in RFC 4646 or ISO 639-2 language code format.



@param  DriverName[out]       A pointer to the Unicode string to return.
                           This Unicode string is the name of the


                           driver specified by This in the language


                           specified by Language.



@retval EFI_SUCCESS           The Unicode string for the Driver specified by
                           This and the language specified by Language was


                           returned in DriverName.



@retval EFI_INVALID_PARAMETER Language is NULL.

@retval EFI_INVALID_PARAMETER DriverName is NULL.

@retval EFI_UNSUPPORTED       The driver specified by This does not support
                           the language specified by Language.




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcComponentNameGetDriverName (

IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
IN  CHAR8                           *Language,
OUT CHAR16                          **DriverName
)

+{

return LookupUnicodeString2 (
      Language,


      This->SupportedLanguages,


      mSdMmcPciHcDriverNameTable,


      DriverName,


      (BOOLEAN)(This == &gSdMmcPciHcComponentName)


      );



+}



+/**

Retrieves a Unicode string that is the user readable name of the controller
that is being managed by a driver.

This function retrieves the user readable name of the controller specified by
ControllerHandle and ChildHandle in the form of a Unicode string. If the
driver specified by This has a user readable name in the language specified by
Language, then a pointer to the controller name is returned in ControllerName,
and EFI_SUCCESS is returned.  If the driver specified by This is not currently
managing the controller specified by ControllerHandle and ChildHandle,
then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
support the language specified by Language, then EFI_UNSUPPORTED is returned.

@param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
                           EFI_COMPONENT_NAME_PROTOCOL instance.



@param  ControllerHandle[in]  The handle of a controller that the driver
                           specified by This is managing.  This handle


                           specifies the controller whose name is to be


                           returned.



@param  ChildHandle[in]       The handle of the child controller to retrieve
                           the name of.  This is an optional parameter that


                           may be NULL.  It will be NULL for device


                           drivers.  It will also be NULL for a bus drivers


                           that wish to retrieve the name of the bus


                           controller.  It will not be NULL for a bus


                           driver that wishes to retrieve the name of a


                           child controller.



@param  Language[in]          A pointer to a Null-terminated ASCII string
                           array indicating the language.  This is the


                           language of the driver name that the caller is


                           requesting, and it must match one of the


                           languages specified in SupportedLanguages. The


                           number of languages supported by a driver is up


                           to the driver writer. Language is specified in


                           RFC 4646 or ISO 639-2 language code format.



@param  ControllerName[out]   A pointer to the Unicode string to return.
                           This Unicode string is the name of the


                           controller specified by ControllerHandle and


                           ChildHandle in the language specified by


                           Language from the point of view of the driver


                           specified by This.



@retval EFI_SUCCESS           The Unicode string for the user readable name in
                           the language specified by Language for the


                           driver specified by This was returned in


                           DriverName.



@retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.

@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                           EFI_HANDLE.



@retval EFI_INVALID_PARAMETER Language is NULL.

@retval EFI_INVALID_PARAMETER ControllerName is NULL.

@retval EFI_UNSUPPORTED       The driver specified by This is not currently
                           managing the controller specified by


                           ControllerHandle and ChildHandle.



@retval EFI_UNSUPPORTED       The driver specified by This does not support
                           the language specified by Language.




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcComponentNameGetControllerName (

IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
IN  EFI_HANDLE                      ControllerHandle,
IN  EFI_HANDLE                      ChildHandle, OPTIONAL
IN  CHAR8                           *Language,
OUT CHAR16                          **ControllerName
)

+{

EFI_STATUS         Status;

if (Language == NULL || ControllerName == NULL) {
return EFI_INVALID_PARAMETER;
}

//
// This is a device driver, so ChildHandle must be NULL.
//
if (ChildHandle != NULL) {
return EFI_UNSUPPORTED;
}

//
// Make sure this driver is currently managing ControllerHandle
//
Status = EfiTestManagedDevice (
        ControllerHandle,


        gSdMmcPciHcDriverBinding.DriverBindingHandle,


        &gEfiPciIoProtocolGuid


        );


if (EFI_ERROR (Status)) {
return Status;
}

return LookupUnicodeString2 (
      Language,


      This->SupportedLanguages,


      mSdMmcPciHcControllerNameTable,


      ControllerName,


      (BOOLEAN)(This == &gSdMmcPciHcComponentName)


      );



+}
diff --git a/Drivers/SdMmc/Xenon/MvEmmcDevice.c b/Drivers/SdMmc/Xenon/MvEmmcDevice.c
new file mode 100755
index 0000000..3f73194
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvEmmcDevice.c
@@ -0,0 +1,1162 @@
+/** @file

This file provides some helper functions which are specific for EMMC device.

Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.


+**/



+#include "SdMmcPciHcDxe.h"



+/**

Send command GO_IDLE_STATE (CMD0 with argument of 0x00000000) to the device to
make it go to Idle State.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The EMMC device is reset correctly.
@retval Others            The device reset fails.


+**/
+EFI_STATUS
+EmmcReset (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_GO_IDLE_STATE;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBc;
SdMmcCmdBlk.ResponseType = 0;
SdMmcCmdBlk.CommandArgument = 0;

gBS->Stall (1000);

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SEND_OP_COND to the EMMC device to get the data of the OCR register.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in]      PassThru  A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]      Slot      The slot number of the SD card to send the command to.
@param[in, out] Argument  On input, the argument of SEND_OP_COND is to send to the device.
                       On output, the argument is the value of OCR register.



@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcGetOcr (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN OUT UINT32                         *Argument
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SEND_OP_COND;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR3;
SdMmcCmdBlk.CommandArgument = *Argument;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
//
// For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.
//
*Argument = SdMmcStatusBlk.Resp0;
}

return Status;

+}



+/**

Broadcast command ALL_SEND_CID to the bus to ask all the EMMC devices to send the
data of their CID registers.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcGetAllCid (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_ALL_SEND_CID;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;
SdMmcCmdBlk.CommandArgument = 0;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SET_RELATIVE_ADDR to the EMMC device to assign a Relative device
Address (RCA).

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSetRca (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SET_RELATIVE_ADDR;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SEND_CSD to the EMMC device to get the data of the CSD register.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of selected device.
@param[out] Csd           The buffer to store the content of the CSD register.
                       Note the caller should ignore the lowest byte of this


                       buffer as the content of this byte is meaningless even


                       if the operation succeeds.



@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcGetCsd (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT16                         Rca,
OUT EMMC_CSD                       *Csd


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SEND_CSD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
//
// For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.
//
CopyMem (((UINT8*)Csd) + 1, &SdMmcStatusBlk.Resp0, sizeof (EMMC_CSD) - 1);
}

return Status;

+}



+/**

Send command SELECT_DESELECT_CARD to the EMMC device to select/deselect it.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of selected device.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSelect (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SELECT_DESELECT_CARD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SEND_EXT_CSD to the EMMC device to get the data of the EXT_CSD register.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[out] ExtCsd        The buffer to store the content of the EXT_CSD register.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcGetExtCsd (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
OUT EMMC_EXT_CSD                   *ExtCsd


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SEND_EXT_CSD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAdtc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = 0x00000000;

Packet.InDataBuffer     = ExtCsd;
Packet.InTransferLength = sizeof (EMMC_EXT_CSD);

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
return Status;

+}



+/**

Send command SWITCH to the EMMC device to switch the mode of operation of the
selected Device or modifies the EXT_CSD registers.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Access        The access mode of SWTICH command.
@param[in]  Index         The offset of the field to be access.
@param[in]  Value         The value to be set to the specified field of EXT_CSD register.
@param[in]  CmdSet        The value of CmdSet field of EXT_CSD register.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSwitch (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT8                              Access,
IN UINT8                              Index,
IN UINT8                              Value,
IN UINT8                              CmdSet
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SWITCH;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1b;
SdMmcCmdBlk.CommandArgument = (Access << 24) | (Index << 16) | (Value << 8) | CmdSet;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SEND_STATUS to the addressed EMMC device to get its status register.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of addressed device.
@param[out] DevStatus     The returned device status.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSendStatus (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT16                         Rca,
OUT UINT32                         *DevStatus


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SEND_STATUS;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
*DevStatus = SdMmcStatusBlk.Resp0;
}

return Status;

+}



+/**

Send command SEND_TUNING_BLOCK to the EMMC device for HS200 optimal sampling point
detection.

It may be sent up to 40 times until the host finishes the tuning procedure.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] BusWidth       The bus width to work.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSendTuningBlk (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT8                              BusWidth
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;
UINT8                                 TuningBlock[128];

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = EMMC_SEND_TUNING_BLOCK;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAdtc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = 0;

Packet.InDataBuffer = TuningBlock;
if (BusWidth == 8) {
Packet.InTransferLength = sizeof (TuningBlock);
} else {
Packet.InTransferLength = 64;
}

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Tunning the clock to get HS200 optimal sampling point.

Command SEND_TUNING_BLOCK may be sent up to 40 times until the host finishes the
tuning procedure.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
Simplified Spec 3.0 Figure 2-29 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] BusWidth       The bus width to work.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcTuningClkForHs200 (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT8                              BusWidth
)

+{

EFI_STATUS          Status;
UINT8               HostCtrl2;
UINT8               Retry;

//
// Notify the host that the sampling clock tuning procedure starts.
//
HostCtrl2 = BIT6;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Ask the device to send a sequence of tuning blocks till the tuning procedure is done.
//
Retry = 0;
do {
Status = EmmcSendTuningBlk (PassThru, Slot, BusWidth);
if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_ERROR, "EmmcTuningClkForHs200: Send tuning block fails with %r\n", Status));


 return Status;


}

Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, TRUE, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
 return Status;


}

if ((HostCtrl2 & (BIT6 | BIT7)) == 0) {
 break;


}

if ((HostCtrl2 & (BIT6 | BIT7)) == BIT7) {
 return EFI_SUCCESS;


}
} while (++Retry < 40);

DEBUG ((DEBUG_ERROR, "EmmcTuningClkForHs200: Send tuning block fails at %d times with HostCtrl2 %02x\n", Retry, HostCtrl2));
//
// Abort the tuning procedure and reset the tuning circuit.
//
HostCtrl2 = (UINT8)~(BIT6 | BIT7);
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
return EFI_DEVICE_ERROR;

+}



+/**

Switch the bus width to specified width.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.9 and SD Host Controller
Simplified Spec 3.0 Figure 3-7 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] IsDdr          If TRUE, use dual data rate data simpling method. Otherwise
                       use single data rate data simpling method.


@param[in] BusWidth       The bus width to be set, it could be 4 or 8.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSwitchBusWidth (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN BOOLEAN                            IsDdr,
IN UINT8                              BusWidth
)

+{

EFI_STATUS          Status;
UINT8               Access;
UINT8               Index;
UINT8               Value;
UINT8               CmdSet;
UINT32              DevStatus;

//
// Write Byte, the Value field is written into the byte pointed by Index.
//
Access = 0x03;
Index  = OFFSET_OF (EMMC_EXT_CSD, BusWidth);
if (BusWidth == 4) {
Value = 1;
} else if (BusWidth == 8) {
Value = 2;
} else {
return EFI_INVALID_PARAMETER;
}

if (IsDdr) {
Value += 4;
}

CmdSet = 0;
Status = EmmcSwitch (PassThru, Slot, Access, Index, Value, CmdSet);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSwitchBusWidth: Switch to bus width %d fails with %r\n", BusWidth, Status));
return Status;
}

Status = EmmcSendStatus (PassThru, Slot, Rca, &DevStatus);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSwitchBusWidth: Send status fails with %r\n", Status));
return Status;
}
//
// Check the switch operation is really successful or not.
//
if ((DevStatus & BIT7) != 0) {
DEBUG ((DEBUG_ERROR, "EmmcSwitchBusWidth: The switch operation fails as DevStatus is 0x%08x\n", DevStatus));
return EFI_DEVICE_ERROR;
}

Status = SdMmcHcSetBusWidth (PciIo, Slot, BusWidth);

return Status;

+}



+/**

Switch the clock frequency to the specified value.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6 and SD Host Controller
Simplified Spec 3.0 Figure 3-3 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] HsTiming       The value to be written to HS_TIMING field of EXT_CSD register.
@param[in] ClockFreq      The max clock frequency to be set, the unit is MHz.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSwitchClockFreq (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN UINT8                              HsTiming,
IN UINT32                             ClockFreq
)

+{

EFI_STATUS                Status;
UINT8                     Access;
UINT8                     Index;
UINT8                     Value;
UINT8                     CmdSet;
UINT32                    DevStatus;
SD_MMC_HC_PRIVATE_DATA    *Private;

Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);
//
// Write Byte, the Value field is written into the byte pointed by Index.
//
Access = 0x03;
Index  = OFFSET_OF (EMMC_EXT_CSD, HsTiming);
Value  = HsTiming;
CmdSet = 0;

Status = EmmcSwitch (PassThru, Slot, Access, Index, Value, CmdSet);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSwitchClockFreq: Switch to hstiming %d fails with %r\n", HsTiming, Status));
return Status;
}

Status = EmmcSendStatus (PassThru, Slot, Rca, &DevStatus);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSwitchClockFreq: Send status fails with %r\n", Status));
return Status;
}
//
// Check the switch operation is really successful or not.
//
if ((DevStatus & BIT7) != 0) {
DEBUG ((DEBUG_ERROR, "EmmcSwitchClockFreq: The switch operation fails as DevStatus is 0x%08x\n", DevStatus));
return EFI_DEVICE_ERROR;
}
//
// Convert the clock freq unit from MHz to KHz.
//
Status = SdMmcHcClockSupply (PciIo, Slot, ClockFreq * 1000, Private->Capability[Slot]);

return Status;

+}



+/**

Switch to the High Speed timing according to request.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
Simplified Spec 3.0 Figure 2-29 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] ClockFreq      The max clock frequency to be set.
@param[in] IsDdr          If TRUE, use dual data rate data simpling method. Otherwise
                       use single data rate data simpling method.


@param[in] BusWidth       The bus width to be set, it could be 4 or 8.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSwitchToHighSpeed (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN UINT32                             ClockFreq,
IN BOOLEAN                            IsDdr,
IN UINT8                              BusWidth
)

+{

EFI_STATUS          Status;
UINT8               HsTiming;
UINT8               HostCtrl1;
UINT8               HostCtrl2;

Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, IsDdr, BusWidth);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set to Hight Speed timing
//
HostCtrl1 = BIT2;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
if (EFI_ERROR (Status)) {
return Status;
}

//
// Clean UHS Mode Select field of Host Control 2 reigster before update
//
HostCtrl2 = (UINT8)~0x7;
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set UHS Mode Select field of Host Control 2 reigster to SDR12/25/50
//
if (IsDdr) {
HostCtrl2 = BIT2;
} else if (ClockFreq == 52) {
HostCtrl2 = BIT0;
} else {
HostCtrl2 = 0;
}
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}

HsTiming = 1;
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);
if (EFI_ERROR (Status)) {
return Status;
}

return Status;

+}



+/**

Switch to the HS200 timing according to request.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
Simplified Spec 3.0 Figure 2-29 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] ClockFreq      The max clock frequency to be set.
@param[in] BusWidth       The bus width to be set, it could be 4 or 8.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSwitchToHS200 (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN UINT32                             ClockFreq,
IN UINT8                              BusWidth
)

+{

EFI_STATUS          Status;
UINT8               HsTiming;
UINT8               HostCtrl2;
UINT16              ClockCtrl;

if ((BusWidth != 4) && (BusWidth != 8)) {
return EFI_INVALID_PARAMETER;
}

Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, FALSE, BusWidth);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set to HS200/SDR104 timing
//
//
// Stop bus clock at first
//
Status = SdMmcHcStopClock (PciIo, Slot);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Clean UHS Mode Select field of Host Control 2 reigster before update
//
HostCtrl2 = (UINT8)~0x7;
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set UHS Mode Select field of Host Control 2 reigster to SDR104
//
HostCtrl2 = BIT0 | BIT1;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Wait Internal Clock Stable in the Clock Control register to be 1 before set SD Clock Enable bit
//
Status = SdMmcHcWaitMmioSet (
        PciIo,


        Slot,


        SD_MMC_HC_CLOCK_CTRL,


        sizeof (ClockCtrl),


        BIT1,


        BIT1,


        SD_MMC_HC_GENERIC_TIMEOUT


        );


if (EFI_ERROR (Status)) {
return Status;
}
//
// Set SD Clock Enable in the Clock Control register to 1
//
ClockCtrl = BIT2;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_CLOCK_CTRL, sizeof (ClockCtrl), &ClockCtrl);

HsTiming = 2;
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);
if (EFI_ERROR (Status)) {
return Status;
}

Status = EmmcTuningClkForHs200 (PciIo, PassThru, Slot, BusWidth);

return Status;

+}



+/**

Switch to the HS400 timing according to request.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
Simplified Spec 3.0 Figure 2-29 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] ClockFreq      The max clock frequency to be set.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSwitchToHS400 (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN UINT32                             ClockFreq
)

+{

EFI_STATUS          Status;
UINT8               HsTiming;
UINT8               HostCtrl2;

Status = EmmcSwitchToHS200 (PciIo, PassThru, Slot, Rca, ClockFreq, 8);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set to Hight Speed timing and set the clock frequency to a value less than 52MHz.
//
HsTiming = 1;
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, 52);
if (EFI_ERROR (Status)) {
return Status;
}
//
// HS400 mode must use 8 data lines.
//
Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, TRUE, 8);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Clean UHS Mode Select field of Host Control 2 reigster before update
//
HostCtrl2 = (UINT8)~0x7;
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set UHS Mode Select field of Host Control 2 reigster to HS400
//
HostCtrl2 = BIT0 | BIT2;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}

HsTiming = 3;
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);

return Status;

+}



+/**

Switch the high speed timing according to request.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
Simplified Spec 3.0 Figure 2-29 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+EmmcSetBusMode (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca
)

+{

EFI_STATUS                    Status;
EMMC_CSD                      Csd;
EMMC_EXT_CSD                  ExtCsd;
UINT8                         HsTiming;
BOOLEAN                       IsDdr;
UINT32                        ClockFreq;
UINT8                         BusWidth;
SD_MMC_HC_PRIVATE_DATA        *Private;

Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);

Status = EmmcGetCsd (PassThru, Slot, Rca, &Csd);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSetBusMode: GetCsd fails with %r\n", Status));
return Status;
}

Status = EmmcSelect (PassThru, Slot, Rca);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSetBusMode: Select fails with %r\n", Status));
return Status;
}

ASSERT (Private->Capability[Slot].BaseClkFreq != 0);
//
// Check if the Host Controller support 8bits bus width.
//
if (Private->Capability[Slot].BusWidth8 != 0) {
BusWidth = 8;
} else {
BusWidth = 4;
}
//
// Get Deivce_Type from EXT_CSD register.
//
Status = EmmcGetExtCsd (PassThru, Slot, &ExtCsd);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcSetBusMode: GetExtCsd fails with %r\n", Status));
return Status;
}
//
// Calculate supported bus speed/bus width/clock frequency.
//
HsTiming  = 0;
IsDdr     = FALSE;
ClockFreq = 0;
if (((ExtCsd.DeviceType & (BIT4 | BIT5))  != 0) && (Private->Capability[Slot].Sdr104 != 0)) {
HsTiming  = 2;
IsDdr     = FALSE;
ClockFreq = 200;
} else if (((ExtCsd.DeviceType & (BIT2 | BIT3))  != 0) && (Private->Capability[Slot].Ddr50 != 0)) {
HsTiming  = 1;
IsDdr     = TRUE;
ClockFreq = 52;
} else if (((ExtCsd.DeviceType & BIT1)  != 0) && (Private->Capability[Slot].HighSpeed != 0)) {
HsTiming  = 1;
IsDdr     = FALSE;
ClockFreq = 52;
} else if (((ExtCsd.DeviceType & BIT0)  != 0) && (Private->Capability[Slot].HighSpeed != 0)) {
HsTiming  = 1;
IsDdr     = FALSE;
ClockFreq = 26;
}
//
// Check if both of the device and the host controller support HS400 DDR mode.
//
if (((ExtCsd.DeviceType & (BIT6 | BIT7))  != 0) && (Private->Capability[Slot].Hs400 != 0)) {
//
// The host controller supports 8bits bus.
//
ASSERT (BusWidth == 8);
HsTiming  = 3;
IsDdr     = TRUE;
ClockFreq = 200;
}

if ((ClockFreq == 0) || (HsTiming == 0)) {
//
// Continue using default setting.
//
return EFI_SUCCESS;
}

DEBUG ((DEBUG_INFO, "EmmcSetBusMode: HsTiming %d ClockFreq %d BusWidth %d Ddr %a\n", HsTiming, ClockFreq, BusWidth, IsDdr ? "TRUE":"FALSE"));

if (HsTiming == 3) {
//
// Execute HS400 timing switch procedure
//
Status = EmmcSwitchToHS400 (PciIo, PassThru, Slot, Rca, ClockFreq);
} else if (HsTiming == 2) {
//
// Execute HS200 timing switch procedure
//
Status = EmmcSwitchToHS200 (PciIo, PassThru, Slot, Rca, ClockFreq, BusWidth);
} else {
//
// Execute High Speed timing switch procedure
//
Status = EmmcSwitchToHighSpeed (PciIo, PassThru, Slot, Rca, ClockFreq, IsDdr, BusWidth);
}

DEBUG ((DEBUG_INFO, "EmmcSetBusMode: Switch to %a %r\n", (HsTiming == 3) ? "HS400" : ((HsTiming == 2) ? "HS200" : "HighSpeed"), Status));

return Status;

+}



+/**

Execute EMMC device identification procedure.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       There is a EMMC card.
@retval Others            There is not a EMMC card.


+**/
+EFI_STATUS
+EmmcIdentification (

IN SD_MMC_HC_PRIVATE_DATA             *Private,
IN UINT8                              Slot
)

+{

EFI_STATUS                     Status;
EFI_PCI_IO_PROTOCOL            *PciIo;
EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru;
UINT32                         Ocr;
UINT16                         Rca;

PciIo    = Private->PciIo;
PassThru = &Private->PassThru;

Status = EmmcReset (PassThru, Slot);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd0 fails with %r\n", Status));
return Status;
}

Ocr = 0;
do {
Status = EmmcGetOcr (PassThru, Slot, &Ocr);
if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd1 fails with %r\n", Status));


 return Status;


}
Ocr |= BIT30;
} while ((Ocr & BIT31) == 0);

Status = EmmcGetAllCid (PassThru, Slot);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd2 fails with %r\n", Status));
return Status;
}
//
// Slot starts from 0 and valid RCA starts from 1.
// Here we takes a simple formula to calculate the RCA.
// Don't support multiple devices on the slot, that is
// shared bus slot feature.
//
Rca    = Slot + 1;
Status = EmmcSetRca (PassThru, Slot, Rca);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "EmmcIdentification: Executing Cmd3 fails with %r\n", Status));
return Status;
}
//
// Enter Data Tranfer Mode.
//
DEBUG ((DEBUG_INFO, "EmmcIdentification: Found a EMMC device at slot [%d], RCA [%d]\n", Slot, Rca));
Private->Slot[Slot].CardType = EmmcCardType;

Status = EmmcSetBusMode (PciIo, PassThru, Slot, Rca);

return Status;

+}



diff --git a/Drivers/SdMmc/Xenon/MvSdDevice.c b/Drivers/SdMmc/Xenon/MvSdDevice.c
new file mode 100644
index 0000000..9122848
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdDevice.c
@@ -0,0 +1,1190 @@
+/** @file

This file provides some helper functions which are specific for SD card device.

Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.


+**/



+#include "SdMmcPciHcDxe.h"



+/**

Send command GO_IDLE_STATE to the device to make it go to Idle State.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The SD device is reset correctly.
@retval Others            The device reset fails.


+**/
+EFI_STATUS
+SdCardReset (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_GO_IDLE_STATE;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBc;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SEND_IF_COND to the device to inquiry the SD Memory Card interface
condition.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] SupplyVoltage  The supplied voltage by the host.
@param[in] CheckPattern   The check pattern to be sent to the device.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardVoltageCheck (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT8                              SupplyVoltage,
IN UINT8                              CheckPattern
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SEND_IF_COND;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR7;
SdMmcCmdBlk.CommandArgument = (SupplyVoltage << 8) | CheckPattern;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

if (!EFI_ERROR (Status)) {
if (SdMmcStatusBlk.Resp0 != SdMmcCmdBlk.CommandArgument) {
 return EFI_DEVICE_ERROR;


}
}

return Status;

+}



+/**

Send command SDIO_SEND_OP_COND to the device to see whether it is SDIO device.

Refer to SDIO Simplified Spec 3 Section 3.2 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] VoltageWindow  The supply voltage window.
@param[in] S18R           The boolean to show if it should switch to 1.8v.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdioSendOpCond (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT32                             VoltageWindow,
IN BOOLEAN                            S18R
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;
UINT32                                Switch;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SDIO_SEND_OP_COND;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR4;

Switch = S18R ? BIT24 : 0;

SdMmcCmdBlk.CommandArgument = (VoltageWindow & 0xFFFFFF) | Switch;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SD_SEND_OP_COND to the device to see whether it is SDIO device.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot           The slot number of the SD card to send the command to.
@param[in]  Rca            The relative device address of addressed device.
@param[in]  VoltageWindow  The supply voltage window.
@param[in]  S18R           The boolean to show if it should switch to 1.8v.
@param[in]  Xpc            The boolean to show if it should provide 0.36w power control.
@param[in]  Hcs            The boolean to show if it support host capacity info.
@param[out] Ocr            The buffer to store returned OCR register value.

@retval EFI_SUCCESS        The operation is done correctly.
@retval Others             The operation fails.


+**/
+EFI_STATUS
+SdCardSendOpCond (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT16                         Rca,
IN     UINT32                         VoltageWindow,
IN     BOOLEAN                        S18R,
IN     BOOLEAN                        Xpc,
IN     BOOLEAN                        Hcs,
OUT UINT32                         *Ocr


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;
UINT32                                Switch;
UINT32                                MaxPower;
UINT32                                HostCapacity;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_APP_CMD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (EFI_ERROR (Status)) {
return Status;
}

SdMmcCmdBlk.CommandIndex = SD_SEND_OP_COND;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR3;

Switch       = S18R ? BIT24 : 0;
MaxPower     = Xpc ? BIT28 : 0;
HostCapacity = Hcs ? BIT30 : 0;

SdMmcCmdBlk.CommandArgument = (VoltageWindow & 0xFFFFFF) | Switch | MaxPower | HostCapacity;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
//
// For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.
//
*Ocr = SdMmcStatusBlk.Resp0;
}

return Status;

+}



+/**

Broadcast command ALL_SEND_CID to the bus to ask all the SD devices to send the
data of their CID registers.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardAllSendCid (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_ALL_SEND_CID;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SET_RELATIVE_ADDR to the SD device to assign a Relative device
Address (RCA).

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[out] Rca           The relative device address to assign.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSetRca (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
OUT UINT16                         *Rca


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SET_RELATIVE_ADDR;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR6;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
*Rca = (UINT16)(SdMmcStatusBlk.Resp0 >> 16);
}

return Status;

+}



+/**

Send command SEND_CSD to the SD device to get the data of the CSD register.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of selected device.
@param[out] Csd           The buffer to store the content of the CSD register.
                       Note the caller should ignore the lowest byte of this


                       buffer as the content of this byte is meaningless even


                       if the operation succeeds.



@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardGetCsd (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT16                         Rca,
OUT SD_CSD                         *Csd


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SEND_CSD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
//
// For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.
//
CopyMem (((UINT8*)Csd) + 1, &SdMmcStatusBlk.Resp0, sizeof (SD_CSD) - 1);
}

return Status;

+}



+/**

Send command SEND_CSD to the SD device to get the data of the CSD register.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of selected device.
@param[out] Scr           The buffer to store the content of the SCR register.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardGetScr (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT16                         Rca,
OUT SD_SCR                         *Scr


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_APP_CMD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (EFI_ERROR (Status)) {
return Status;
}

SdMmcCmdBlk.CommandIndex = SD_SEND_SCR;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAdtc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;

Packet.InDataBuffer     = Scr;
Packet.InTransferLength = sizeof (SD_SCR);

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SELECT_DESELECT_CARD to the SD device to select/deselect it.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of selected device.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSelect (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SELECT_DESELECT_CARD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
if (Rca != 0) {
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1b;
}
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command VOLTAGE_SWITCH to the SD device to switch the voltage of the device.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardVoltageSwitch (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_VOLTAGE_SWITCH;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = 0;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SET_BUS_WIDTH to the SD device to set the bus width.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address of addressed device.
@param[in] BusWidth       The bus width to be set, it could be 1 or 4.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSetBusWidth (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN UINT8                              BusWidth
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;
UINT8                                 Value;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_APP_CMD;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (EFI_ERROR (Status)) {
return Status;
}

SdMmcCmdBlk.CommandIndex = SD_SET_BUS_WIDTH;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;

if (BusWidth == 1) {
Value = 0;
} else if (BusWidth == 4) {
Value = 2;
} else {
return EFI_INVALID_PARAMETER;
}

SdMmcCmdBlk.CommandArgument = Value & 0x3;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
return Status;

+}



+/**

Send command SWITCH_FUNC to the SD device to check switchable function or switch card function.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  AccessMode    The value for access mode group.
@param[in]  CommandSystem The value for command set group.
@param[in]  DriveStrength The value for drive length group.
@param[in]  PowerLimit    The value for power limit group.
@param[in]  Mode          Switch or check function.
@param[out] SwitchResp    The return switch function status.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSwitch (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT8                          AccessMode,
IN     UINT8                          CommandSystem,
IN     UINT8                          DriveStrength,
IN     UINT8                          PowerLimit,
IN     BOOLEAN                        Mode,
OUT UINT8                          *SwitchResp


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;
UINT32                                ModeValue;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SWITCH_FUNC;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAdtc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;

ModeValue = Mode ? BIT31 : 0;
SdMmcCmdBlk.CommandArgument = (AccessMode & 0xF) | ((PowerLimit & 0xF) << 4) | \
                           ((DriveStrength & 0xF) << 8) | ((DriveStrength & 0xF) << 12) | \


                           ModeValue;



Packet.InDataBuffer     = SwitchResp;
Packet.InTransferLength = 64;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Send command SEND_STATUS to the addressed SD device to get its status register.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in]  PassThru      A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[in]  Rca           The relative device address of addressed device.
@param[out] DevStatus     The returned device status.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSendStatus (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru,
IN     UINT8                          Slot,
IN     UINT16                         Rca,
OUT UINT32                         *DevStatus


)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SEND_STATUS;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
*DevStatus = SdMmcStatusBlk.Resp0;
}

return Status;

+}



+/**

Send command SEND_TUNING_BLOCK to the SD device for HS200 optimal sampling point
detection.

It may be sent up to 40 times until the host finishes the tuning procedure.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 for details.

@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSendTuningBlk (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;
EFI_STATUS                            Status;
UINT8                                 TuningBlock[64];

ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));

Packet.SdMmcCmdBlk    = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout        = SD_MMC_HC_GENERIC_TIMEOUT;

SdMmcCmdBlk.CommandIndex = SD_SEND_TUNING_BLOCK;
SdMmcCmdBlk.CommandType  = SdMmcCommandTypeAdtc;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
SdMmcCmdBlk.CommandArgument = 0;

Packet.InDataBuffer     = TuningBlock;
Packet.InTransferLength = sizeof (TuningBlock);

Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);

return Status;

+}



+/**

Tunning the sampling point of SDR104 or SDR50 bus speed mode.

Command SD_SEND_TUNING_BLOCK may be sent up to 40 times until the host finishes the
tuning procedure.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 and
SD Host Controller Simplified Spec 3.0 section Figure 3-7 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardTuningClock (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot
)

+{

EFI_STATUS          Status;
UINT8               HostCtrl2;
UINT8               Retry;

//
// Notify the host that the sampling clock tuning procedure starts.
//
HostCtrl2 = BIT6;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Ask the device to send a sequence of tuning blocks till the tuning procedure is done.
//
Retry = 0;
do {
Status = SdCardSendTuningBlk (PassThru, Slot);
if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_ERROR, "SdCardSendTuningBlk: Send tuning block fails with %r\n", Status));


 return Status;


}

Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, TRUE, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
 return Status;


}

if ((HostCtrl2 & (BIT6 | BIT7)) == 0) {
 break;


}
if ((HostCtrl2 & (BIT6 | BIT7)) == BIT7) {
 return EFI_SUCCESS;


}
} while (++Retry < 40);

DEBUG ((DEBUG_ERROR, "SdCardTuningClock: Send tuning block fails at %d times with HostCtrl2 %02x\n", Retry, HostCtrl2));
//
// Abort the tuning procedure and reset the tuning circuit.
//
HostCtrl2 = (UINT8)~(BIT6 | BIT7);
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
return EFI_DEVICE_ERROR;

+}



+/**

Switch the bus width to specified width.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 and
SD Host Controller Simplified Spec 3.0 section Figure 3-7 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] BusWidth       The bus width to be set, it could be 4 or 8.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSwitchBusWidth (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN UINT8                              BusWidth
)

+{

EFI_STATUS          Status;
UINT32              DevStatus;

Status = SdCardSetBusWidth (PassThru, Slot, Rca, BusWidth);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SdCardSwitchBusWidth: Switch to bus width %d fails with %r\n", BusWidth, Status));
return Status;
}

Status = SdCardSendStatus (PassThru, Slot, Rca, &DevStatus);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SdCardSwitchBusWidth: Send status fails with %r\n", Status));
return Status;
}
//
// Check the switch operation is really successful or not.
//
if ((DevStatus >> 16) != 0) {
DEBUG ((DEBUG_ERROR, "SdCardSwitchBusWidth: The switch operation fails as DevStatus is 0x%08x\n", DevStatus));
return EFI_DEVICE_ERROR;
}

Status = SdMmcHcSetBusWidth (PciIo, Slot, BusWidth);

return Status;

+}



+/**

Switch the high speed timing according to request.

Refer to SD Physical Layer Simplified Spec 4.1 Section 4.7 and
SD Host Controller Simplified Spec 3.0 section Figure 2-29 for details.

@param[in] PciIo          A pointer to the EFI_PCI_IO_PROTOCOL instance.
@param[in] PassThru       A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Rca            The relative device address to be assigned.
@param[in] S18A           The boolean to show if it's a UHS-I SD card.

@retval EFI_SUCCESS       The operation is done correctly.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdCardSetBusMode (

IN EFI_PCI_IO_PROTOCOL                *PciIo,
IN EFI_SD_MMC_PASS_THRU_PROTOCOL      *PassThru,
IN UINT8                              Slot,
IN UINT16                             Rca,
IN BOOLEAN                            S18A
)

+{

EFI_STATUS                   Status;
SD_MMC_HC_SLOT_CAP           *Capability;
UINT32                       ClockFreq;
UINT8                        BusWidth;
UINT8                        AccessMode;
UINT8                        HostCtrl1;
UINT8                        HostCtrl2;
UINT8                        SwitchResp[64];
SD_MMC_HC_PRIVATE_DATA       *Private;

Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);

Capability = &Private->Capability[Slot];

Status = SdCardSelect (PassThru, Slot, Rca);
if (EFI_ERROR (Status)) {
return Status;
}

BusWidth = 4;

Status = SdCardSwitchBusWidth (PciIo, PassThru, Slot, Rca, BusWidth);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get the supported bus speed from SWITCH cmd return data group #1.
//
Status = SdCardSwitch (PassThru, Slot, 0xF, 0xF, 0xF, 0xF, FALSE, SwitchResp);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Calculate supported bus speed/bus width/clock frequency by host and device capability.
//
ClockFreq = 0;
if (S18A && (Capability->Sdr104 != 0) && ((SwitchResp[13] & BIT3) != 0)) {
ClockFreq = 208;
AccessMode = 3;
} else if (S18A && (Capability->Sdr50 != 0) && ((SwitchResp[13] & BIT2) != 0)) {
ClockFreq = 100;
AccessMode = 2;
} else if (S18A && (Capability->Ddr50 != 0) && ((SwitchResp[13] & BIT4) != 0)) {
ClockFreq = 50;
AccessMode = 4;
} else if ((SwitchResp[13] & BIT1) != 0) {
ClockFreq = 50;
AccessMode = 1;
} else {
ClockFreq = 25;
AccessMode = 0;
}

Status = SdCardSwitch (PassThru, Slot, AccessMode, 0xF, 0xF, 0xF, TRUE, SwitchResp);
if (EFI_ERROR (Status)) {
return Status;
}

if ((SwitchResp[16] & 0xF) != AccessMode) {
DEBUG ((DEBUG_ERROR, "SdCardSetBusMode: Switch to AccessMode %d ClockFreq %d BusWidth %d fails! The Switch response is 0x%1x\n", AccessMode, ClockFreq, BusWidth, SwitchResp[16] & 0xF));
return EFI_DEVICE_ERROR;
}

DEBUG ((DEBUG_INFO, "SdCardSetBusMode: Switch to AccessMode %d ClockFreq %d BusWidth %d\n", AccessMode, ClockFreq, BusWidth));

//
// Set to Hight Speed timing
//
if (AccessMode == 1) {
HostCtrl1 = BIT2;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
if (EFI_ERROR (Status)) {
 return Status;


}
}

HostCtrl2 = (UINT8)~0x7;
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
HostCtrl2 = AccessMode;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}

Status = SdMmcHcClockSupply (PciIo, Slot, ClockFreq * 1000, *Capability);
if (EFI_ERROR (Status)) {
return Status;
}

if ((AccessMode == 3) || ((AccessMode == 2) && (Capability->TuningSDR50 != 0))) {
Status = SdCardTuningClock (PciIo, PassThru, Slot);
if (EFI_ERROR (Status)) {
 return Status;


}
}

return Status;

+}



+/**

Execute SD device identification procedure.

Refer to SD Physical Layer Simplified Spec 4.1 Section 3.6 for details.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       There is a SD card.
@retval Others            There is not a SD card.


+**/
+EFI_STATUS
+SdCardIdentification (

IN SD_MMC_HC_PRIVATE_DATA             *Private,
IN UINT8                              Slot
)

+{

EFI_STATUS                     Status;
EFI_PCI_IO_PROTOCOL            *PciIo;
EFI_SD_MMC_PASS_THRU_PROTOCOL  *PassThru;
UINT32                         Ocr;
UINT16                         Rca;
BOOLEAN                        Xpc;
BOOLEAN                        S18r;
UINT64                         MaxCurrent;
UINT16                         ControllerVer;
UINT8                          PowerCtrl;
UINT32                         PresentState;
UINT8                          HostCtrl2;

PciIo    = Private->PciIo;
PassThru = &Private->PassThru;
//
// 1. Send Cmd0 to the device
//
Status = SdCardReset (PassThru, Slot);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "SdCardIdentification: Executing Cmd0 fails with %r\n", Status));
return Status;
}
//
// 2. Send Cmd8 to the device
//
Status = SdCardVoltageCheck (PassThru, Slot, 0x1, 0xFF);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "SdCardIdentification: Executing Cmd8 fails with %r\n", Status));
return Status;
}
//
// 3. Send SDIO Cmd5 to the device to the SDIO device OCR register.
//
Status = SdioSendOpCond (PassThru, Slot, 0, FALSE);
if (!EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "SdCardIdentification: Found SDIO device, ignore it as we don't support\n"));
return EFI_DEVICE_ERROR;
}
//
// 4. Send Acmd41 with voltage window 0 to the device
//
Status = SdCardSendOpCond (PassThru, Slot, 0, 0, FALSE, FALSE, FALSE, &Ocr);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "SdCardIdentification: Executing SdCardSendOpCond fails with %r\n", Status));
return EFI_DEVICE_ERROR;
}

if (Private->Capability[Slot].Voltage33 != 0) {
//
// Support 3.3V
//
MaxCurrent = ((UINT32)Private->MaxCurrent[Slot] & 0xFF) * 4;
} else if (Private->Capability[Slot].Voltage30 != 0) {
//
// Support 3.0V
//
MaxCurrent = (((UINT32)Private->MaxCurrent[Slot] >> 8) & 0xFF) * 4;
} else if (Private->Capability[Slot].Voltage18 != 0) {
//
// Support 1.8V
//
MaxCurrent = (((UINT32)Private->MaxCurrent[Slot] >> 16) & 0xFF) * 4;
} else {
ASSERT (FALSE);
return EFI_DEVICE_ERROR;
}

if (MaxCurrent >= 150) {
Xpc = TRUE;
} else {
Xpc = FALSE;
}

Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_CTRL_VER, TRUE, sizeof (ControllerVer), &ControllerVer);
if (EFI_ERROR (Status)) {
return Status;
}

if ((ControllerVer & 0xFF) == 2) {
S18r = TRUE;
} else if (((ControllerVer & 0xFF) == 0) || ((ControllerVer & 0xFF) == 1)) {
S18r = FALSE;
} else {
ASSERT (FALSE);
return EFI_UNSUPPORTED;
}
//
// 5. Repeatly send Acmd41 with supply voltage window to the device.
//    Note here we only support the cards complied with SD physical
//    layer simplified spec version 2.0 and version 3.0 and above.
//
do {
Status = SdCardSendOpCond (PassThru, Slot, 0, Ocr, S18r, Xpc, TRUE, &Ocr);
if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_ERROR, "SdCardIdentification: SdCardSendOpCond fails with %r Ocr %x, S18r %x, Xpc %x\n", Status, Ocr, S18r, Xpc));


 return EFI_DEVICE_ERROR;


}
} while ((Ocr & BIT31) == 0);

//
// 6. If the S18A bit is set and the Host Controller supports 1.8V signaling
//    (One of support bits is set to 1: SDR50, SDR104 or DDR50 in the
//    Capabilities register), switch its voltage to 1.8V.
//
if ((Private->Capability[Slot].Sdr50 != 0 ||
  Private->Capability[Slot].Sdr104 != 0 ||


  Private->Capability[Slot].Ddr50 != 0) &&


  ((Ocr & BIT24) != 0)) {


Status = SdCardVoltageSwitch (PassThru, Slot);
if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_ERROR, "SdCardIdentification: Executing SdCardVoltageSwitch fails with %r\n", Status));


 Status = EFI_DEVICE_ERROR;


 goto Error;


} else {
 Status = SdMmcHcStopClock (PciIo, Slot);


 if (EFI_ERROR (Status)) {


   Status = EFI_DEVICE_ERROR;


   goto Error;


 }



 SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_PRESENT_STATE, TRUE, sizeof (PresentState), &PresentState);


 if (((PresentState >> 20) & 0xF) != 0) {


   DEBUG ((DEBUG_ERROR, "SdCardIdentification: SwitchVoltage fails with PresentState = 0x%x\n", PresentState));


   Status = EFI_DEVICE_ERROR;


   goto Error;


 }


 HostCtrl2  = BIT3;


 SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);



 gBS->Stall (5000);



 SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, TRUE, sizeof (HostCtrl2), &HostCtrl2);


 if ((HostCtrl2 & BIT3) == 0) {


   DEBUG ((DEBUG_ERROR, "SdCardIdentification: SwitchVoltage fails with HostCtrl2 = 0x%x\n", HostCtrl2));


   Status = EFI_DEVICE_ERROR;


   goto Error;


 }



 SdMmcHcInitClockFreq (PciIo, Slot, Private->Capability[Slot]);



 gBS->Stall (1000);



 SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_PRESENT_STATE, TRUE, sizeof (PresentState), &PresentState);


 if (((PresentState >> 20) & 0xF) != 0xF) {


   DEBUG ((DEBUG_ERROR, "SdCardIdentification: SwitchVoltage fails with PresentState = 0x%x, It should be 0xF\n", PresentState));


   Status = EFI_DEVICE_ERROR;


   goto Error;


 }


}
DEBUG ((DEBUG_INFO, "SdCardIdentification: Switch to 1.8v signal voltage success\n"));
}

Status = SdCardAllSendCid (PassThru, Slot);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SdCardIdentification: Executing SdCardAllSendCid fails with %r\n", Status));
return Status;
}

Status = SdCardSetRca (PassThru, Slot, &Rca);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SdCardIdentification: Executing SdCardSetRca fails with %r\n", Status));
return Status;
}
//
// Enter Data Tranfer Mode.
//
DEBUG ((DEBUG_INFO, "SdCardIdentification: Found a SD device at slot [%d]\n", Slot));
Private->Slot[Slot].CardType = SdCardType;

Status = SdCardSetBusMode (PciIo, PassThru, Slot, Rca, ((Ocr & BIT24) != 0));

return Status;


+Error:

//
// Set SD Bus Power = 0
//
PowerCtrl = (UINT8)~BIT0;
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_POWER_CTRL, sizeof (PowerCtrl), &PowerCtrl);
return EFI_DEVICE_ERROR;

+}



diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.c b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.c
new file mode 100644
index 0000000..4c1b5c8
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.c
@@ -0,0 +1,1316 @@
+/** @file

This driver is used to manage SD/MMC PCI host controllers which are compliance
with SD Host Controller Simplified Specification version 3.00.

It would expose EFI_SD_MMC_PASS_THRU_PROTOCOL for upper layer use.

Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.


+**/



+#include "SdMmcPciHcDxe.h"



+//
+// Driver Global Variables
+//
+EFI_DRIVER_BINDING_PROTOCOL gSdMmcPciHcDriverBinding = {

SdMmcPciHcDriverBindingSupported,
SdMmcPciHcDriverBindingStart,
SdMmcPciHcDriverBindingStop,
0x10,
NULL,
NULL

+};



+//
+// Template for SD/MMC host controller private data.
+//
+SD_MMC_HC_PRIVATE_DATA gSdMmcPciHcTemplate = {

SD_MMC_HC_PRIVATE_SIGNATURE,      // Signature
NULL,                             // ControllerHandle
NULL,                             // PciIo
{                                 // PassThru
sizeof (UINT32),
SdMmcPassThruPassThru,
SdMmcPassThruGetNextSlot,
SdMmcPassThruBuildDevicePath,
SdMmcPassThruGetSlotNumber,
SdMmcPassThruResetDevice
},
0,                                // PciAttributes
0,                                // PreviousSlot
NULL,                             // TimerEvent
NULL,                             // ConnectEvent
                               // Queue


INITIALIZE_LIST_HEAD_VARIABLE (gSdMmcPciHcTemplate.Queue),
{                                 // Slot
{0, UnknownSlot, 0, 0, 0}, {0, UnknownSlot, 0, 0, 0}, {0, UnknownSlot, 0, 0, 0},
{0, UnknownSlot, 0, 0, 0}, {0, UnknownSlot, 0, 0, 0}, {0, UnknownSlot, 0, 0, 0}
},
{                                 // Capability
{0},
},
{                                 // MaxCurrent
0,
},
0                                 // ControllerVersion

+};



+SD_DEVICE_PATH    mSdDpTemplate = {

{
MESSAGING_DEVICE_PATH,
MSG_SD_DP,
{
 (UINT8) (sizeof (SD_DEVICE_PATH)),


 (UINT8) ((sizeof (SD_DEVICE_PATH)) >> 8)


}
},
0

+};



+EMMC_DEVICE_PATH    mEmmcDpTemplate = {

{
MESSAGING_DEVICE_PATH,
MSG_EMMC_DP,
{
 (UINT8) (sizeof (EMMC_DEVICE_PATH)),


 (UINT8) ((sizeof (EMMC_DEVICE_PATH)) >> 8)


}
},
0

+};



+//
+// Prioritized function list to detect card type.
+// User could add other card detection logic here.
+//
+CARD_TYPE_DETECT_ROUTINE mCardTypeDetectRoutineTable[] = {

EmmcIdentification,
SdCardIdentification,
NULL

+};



+/**

The entry point for SD host controller driver, used to install this driver on the ImageHandle.

@param[in]  ImageHandle   The firmware allocated handle for this driver image.
@param[in]  SystemTable   Pointer to the EFI system table.

@retval EFI_SUCCESS   Driver loaded.
@retval other         Driver not loaded.


+**/
+EFI_STATUS
+EFIAPI
+InitializeSdMmcPciHcDxe (

IN EFI_HANDLE        ImageHandle,
IN EFI_SYSTEM_TABLE  *SystemTable
)

+{

EFI_STATUS           Status;

Status = EfiLibInstallDriverBindingComponentName2 (
        ImageHandle,


        SystemTable,


        &gSdMmcPciHcDriverBinding,


        ImageHandle,


        &gSdMmcPciHcComponentName,


        &gSdMmcPciHcComponentName2


        );


ASSERT_EFI_ERROR (Status);

return Status;

+}



+/**

Call back function when the timer event is signaled.

@param[in]  Event     The Event this notify function registered to.
@param[in]  Context   Pointer to the context data registered to the
                   Event.




+**/
+VOID
+EFIAPI
+ProcessAsyncTaskList (

IN EFI_EVENT          Event,
IN VOID*              Context
)

+{

SD_MMC_HC_PRIVATE_DATA              *Private;
LIST_ENTRY                          *Link;
SD_MMC_HC_TRB                       *Trb;
EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
BOOLEAN                             InfiniteWait;
EFI_EVENT                           TrbEvent;

Private = (SD_MMC_HC_PRIVATE_DATA*)Context;

//
// Check if the first entry in the async I/O queue is done or not.
//
Status = EFI_SUCCESS;
Trb    = NULL;
Link   = GetFirstNode (&Private->Queue);
if (!IsNull (&Private->Queue, Link)) {
Trb = SD_MMC_HC_TRB_FROM_THIS (Link);
if (!Private->Slot[Trb->Slot].MediaPresent) {
 Status = EFI_NO_MEDIA;


 goto Done;


}
if (!Trb->Started) {
 //


 // Check whether the cmd/data line is ready for transfer.


 //


 Status = SdMmcCheckTrbEnv (Private, Trb);


 if (!EFI_ERROR (Status)) {


   Trb->Started = TRUE;


   Status = SdMmcExecTrb (Private, Trb);


   if (EFI_ERROR (Status)) {


     goto Done;


   }


 } else {


   goto Done;


 }


}
Status = SdMmcCheckTrbResult (Private, Trb);
}


+Done:

if ((Trb != NULL) && (Status == EFI_NOT_READY)) {
Packet = Trb->Packet;
if (Packet->Timeout == 0) {
 InfiniteWait = TRUE;


} else {
 InfiniteWait = FALSE;


}
if ((!InfiniteWait) && (Trb->Timeout-- == 0)) {
 RemoveEntryList (Link);


 Trb->Packet->TransactionStatus = EFI_TIMEOUT;


 TrbEvent = Trb->Event;


 SdMmcFreeTrb (Trb);


 DEBUG ((DEBUG_VERBOSE, "ProcessAsyncTaskList(): Signal Event %p EFI_TIMEOUT\n", TrbEvent));


 gBS->SignalEvent (TrbEvent);


 return;


}
}
if ((Trb != NULL) && (Status != EFI_NOT_READY)) {
RemoveEntryList (Link);
Trb->Packet->TransactionStatus = Status;
TrbEvent = Trb->Event;
SdMmcFreeTrb (Trb);
DEBUG ((DEBUG_VERBOSE, "ProcessAsyncTaskList(): Signal Event %p with %r\n", TrbEvent, Status));
gBS->SignalEvent (TrbEvent);
}
return;

+}



+/**

Sd removable device enumeration callback function when the timer event is signaled.

@param[in]  Event     The Event this notify function registered to.
@param[in]  Context   Pointer to the context data registered to the
                   Event.




+**/
+VOID
+EFIAPI
+SdMmcPciHcEnumerateDevice (

IN EFI_EVENT          Event,
IN VOID*              Context
)

+{

SD_MMC_HC_PRIVATE_DATA              *Private;
EFI_STATUS                          Status;
UINT8                               Slot;
BOOLEAN                             MediaPresent;
UINT32                              RoutineNum;
CARD_TYPE_DETECT_ROUTINE            *Routine;
UINTN                               Index;
LIST_ENTRY                          *Link;
LIST_ENTRY                          *NextLink;
SD_MMC_HC_TRB                       *Trb;
EFI_TPL                             OldTpl;

Private = (SD_MMC_HC_PRIVATE_DATA*)Context;

for (Slot = 0; Slot < SD_MMC_HC_MAX_SLOT; Slot++) {
if ((Private->Slot[Slot].Enable) && (Private->Slot[Slot].SlotType == RemovableSlot)) {
 Status = SdMmcHcCardDetect (Private->PciIo, Slot, &MediaPresent);


 if ((Status == EFI_MEDIA_CHANGED) && !MediaPresent) {


   DEBUG ((DEBUG_INFO, "SdMmcPciHcEnumerateDevice: device disconnected at slot %d of pci %p\n", Slot, Private->PciIo));


   Private->Slot[Slot].MediaPresent = FALSE;


   Private->Slot[Slot].Initialized  = FALSE;


   //


   // Signal all async task events at the slot with EFI_NO_MEDIA status.


   //


   OldTpl = gBS->RaiseTPL (TPL_NOTIFY);


   for (Link = GetFirstNode (&Private->Queue);


        !IsNull (&Private->Queue, Link);


        Link = NextLink) {


     NextLink = GetNextNode (&Private->Queue, Link);


     Trb = SD_MMC_HC_TRB_FROM_THIS (Link);


     if (Trb->Slot == Slot) {


       RemoveEntryList (Link);


       Trb->Packet->TransactionStatus = EFI_NO_MEDIA;


       gBS->SignalEvent (Trb->Event);


       SdMmcFreeTrb (Trb);


     }


   }


   gBS->RestoreTPL (OldTpl);


   //


   // Notify the upper layer the connect state change through ReinstallProtocolInterface.


   //


   gBS->ReinstallProtocolInterface (


         Private->ControllerHandle,


         &gEfiSdMmcPassThruProtocolGuid,


         &Private->PassThru,


         &Private->PassThru


         );


 }


 if ((Status == EFI_MEDIA_CHANGED) && MediaPresent) {


   DEBUG ((DEBUG_INFO, "SdMmcPciHcEnumerateDevice: device connected at slot %d of pci %p\n", Slot, Private->PciIo));


   //


   // Reset the specified slot of the SD/MMC Pci Host Controller


   //


   Status = SdMmcHcReset (Private->PciIo, Slot);


   if (EFI_ERROR (Status)) {


     continue;


   }


   //


   // Reinitialize slot and restart identification process for the new attached device


   //


   Status = SdMmcHcInitHost (Private->PciIo, Slot, Private->Capability[Slot]);


   if (EFI_ERROR (Status)) {


     continue;


   }



   Private->Slot[Slot].MediaPresent = TRUE;


   Private->Slot[Slot].Initialized  = TRUE;


   RoutineNum = sizeof (mCardTypeDetectRoutineTable) / sizeof (CARD_TYPE_DETECT_ROUTINE);


   for (Index = 0; Index < RoutineNum; Index++) {


     Routine = &mCardTypeDetectRoutineTable[Index];


     if (*Routine != NULL) {


       Status = (*Routine) (Private, Slot);


       if (!EFI_ERROR (Status)) {


         break;


       }


     }


   }


   //


   // This card doesn't get initialized correctly.


   //


   if (Index == RoutineNum) {


     Private->Slot[Slot].Initialized = FALSE;


   }



   //


   // Notify the upper layer the connect state change through ReinstallProtocolInterface.


   //


   gBS->ReinstallProtocolInterface (


          Private->ControllerHandle,


          &gEfiSdMmcPassThruProtocolGuid,


          &Private->PassThru,


          &Private->PassThru


          );


 }


}
}

return;

+}
+/**

Tests to see if this driver supports a given controller. If a child device is provided,
it further tests to see if this driver supports creating a handle for the specified child device.

This function checks to see if the driver specified by This supports the device specified by
ControllerHandle. Drivers will typically use the device path attached to
ControllerHandle and/or the services from the bus I/O abstraction attached to
ControllerHandle to determine if the driver supports ControllerHandle. This function
may be called many times during platform initialization. In order to reduce boot times, the tests
performed by this function must be very small, and take as little time as possible to execute. This
function must not change the state of any hardware devices, and this function must be aware that the
device specified by ControllerHandle may already be managed by the same driver or a
different driver. This function must match its calls to AllocatePages() with FreePages(),
AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
Since ControllerHandle may have been previously started by the same driver, if a protocol is
already in the opened state, then it must not be closed with CloseProtocol(). This is required
to guarantee the state of ControllerHandle is not modified by this function.

@param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in]  ControllerHandle     The handle of the controller to test. This handle
                              must support a protocol interface that supplies


                              an I/O abstraction to the driver.


@param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This
                              parameter is ignored by device drivers, and is optional for bus


                              drivers. For bus drivers, if this parameter is not NULL, then


                              the bus driver must determine if the bus controller specified


                              by ControllerHandle and the child controller specified


                              by RemainingDevicePath are both supported by this


                              bus driver.



@retval EFI_SUCCESS              The device specified by ControllerHandle and
                              RemainingDevicePath is supported by the driver specified by This.


@retval EFI_ALREADY_STARTED      The device specified by ControllerHandle and
                              RemainingDevicePath is already being managed by the driver


                              specified by This.


@retval EFI_ACCESS_DENIED        The device specified by ControllerHandle and
                              RemainingDevicePath is already being managed by a different


                              driver or an application that requires exclusive access.


                              Currently not implemented.


@retval EFI_UNSUPPORTED          The device specified by ControllerHandle and
                              RemainingDevicePath is not supported by the driver specified by This.



+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcDriverBindingSupported (

IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE                  Controller,
IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath
)

+{

EFI_STATUS                Status;
EFI_DEVICE_PATH_PROTOCOL  *ParentDevicePath;
EFI_PCI_IO_PROTOCOL       *PciIo;
PCI_TYPE00                PciData;

PciIo            = NULL;
ParentDevicePath = NULL;

//
// SdPciHcDxe is a device driver, and should ingore the
// "RemainingDevicePath" according to EFI spec.
//
Status = gBS->OpenProtocol (
             Controller,


             &gEfiDevicePathProtocolGuid,


             (VOID *) &ParentDevicePath,


             This->DriverBindingHandle,


             Controller,


             EFI_OPEN_PROTOCOL_BY_DRIVER


             );


if (EFI_ERROR (Status)) {
//
// EFI_ALREADY_STARTED is also an error.
//
return Status;
}
//
// Close the protocol because we don't use it here.
//
gBS->CloseProtocol (
   Controller,


   &gEfiDevicePathProtocolGuid,


   This->DriverBindingHandle,


   Controller


   );



//
// Now test the EfiPciIoProtocol.
//
Status = gBS->OpenProtocol (
             Controller,


             &gEfiPciIoProtocolGuid,


             (VOID **) &PciIo,


             This->DriverBindingHandle,


             Controller,


             EFI_OPEN_PROTOCOL_BY_DRIVER


             );


if (EFI_ERROR (Status)) {
return Status;
}

//
// Now further check the PCI header: Base class (offset 0x08) and
// Sub Class (offset 0x05). This controller should be an SD/MMC PCI
// Host Controller.
//
Status = PciIo->Pci.Read (
                   PciIo,


                   EfiPciIoWidthUint8,


                   0,


                   sizeof (PciData),


                   &PciData


                   );


if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
     Controller,


     &gEfiPciIoProtocolGuid,


     This->DriverBindingHandle,


     Controller


     );


return EFI_UNSUPPORTED;
}
//
// Since we already got the PciData, we can close protocol to avoid to carry it
// on for multiple exit points.
//
gBS->CloseProtocol (
   Controller,


   &gEfiPciIoProtocolGuid,


   This->DriverBindingHandle,


   Controller


   );



//
// Examine SD PCI Host Controller PCI Configuration table fields.
//
if ((PciData.Hdr.ClassCode[2] == PCI_CLASS_SYSTEM_PERIPHERAL) &&
 (PciData.Hdr.ClassCode[1] == PCI_SUBCLASS_SD_HOST_CONTROLLER) &&


 ((PciData.Hdr.ClassCode[0] == 0x00) || (PciData.Hdr.ClassCode[0] == 0x01))) {


return EFI_SUCCESS;
}

return EFI_UNSUPPORTED;

+}



+/**

Starts a device controller or a bus controller.

The Start() function is designed to be invoked from the EFI boot service ConnectController().
As a result, much of the error checking on the parameters to Start() has been moved into this
common boot service. It is legal to call Start() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.

ControllerHandle must be a valid EFI_HANDLE.



If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned


EFI_DEVICE_PATH_PROTOCOL.



Prior to calling Start(), the Supported() function for the driver specified by This must


have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.



@param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in]  ControllerHandle     The handle of the controller to start. This handle
                              must support a protocol interface that supplies


                              an I/O abstraction to the driver.


@param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This
                              parameter is ignored by device drivers, and is optional for bus


                              drivers. For a bus driver, if this parameter is NULL, then handles


                              for all the children of Controller are created by this driver.


                              If this parameter is not NULL and the first Device Path Node is


                              not the End of Device Path Node, then only the handle for the


                              child device specified by the first Device Path Node of


                              RemainingDevicePath is created by this driver.


                              If the first Device Path Node of RemainingDevicePath is


                              the End of Device Path Node, no child handle is created by this


                              driver.



@retval EFI_SUCCESS              The device was started.
@retval EFI_DEVICE_ERROR         The device could not be started due to a device error.Currently not implemented.
@retval EFI_OUT_OF_RESOURCES     The request could not be completed due to a lack of resources.
@retval Others                   The driver failded to start the device.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcDriverBindingStart (

IN EFI_DRIVER_BINDING_PROTOCOL     *This,
IN EFI_HANDLE                      Controller,
IN EFI_DEVICE_PATH_PROTOCOL        *RemainingDevicePath
)

+{

EFI_STATUS                      Status;
SD_MMC_HC_PRIVATE_DATA          *Private;
EFI_PCI_IO_PROTOCOL             *PciIo;
UINT64                          Supports;
UINT64                          PciAttributes;
UINT8                           SlotNum;
UINT8                           FirstBar;
UINT8                           Slot;
UINT8                           Index;
CARD_TYPE_DETECT_ROUTINE        *Routine;
UINT32                          RoutineNum;
BOOLEAN                         MediaPresent;
BOOLEAN                         Support64BitDma;

DEBUG ((DEBUG_INFO, "SdMmcPciHcDriverBindingStart: Start\n"));

//
// Open PCI I/O Protocol and save pointer to open protocol
// in private data area.
//
PciIo  = NULL;
Status = gBS->OpenProtocol (
             Controller,


             &gEfiPciIoProtocolGuid,


             (VOID **) &PciIo,


             This->DriverBindingHandle,


             Controller,


             EFI_OPEN_PROTOCOL_BY_DRIVER


             );


if (EFI_ERROR (Status)) {
return Status;
}

//
// Enable the SD Host Controller MMIO space
//
Private = NULL;
Status  = PciIo->Attributes (
                PciIo,


                EfiPciIoAttributeOperationGet,


                0,


                &PciAttributes


                );



if (EFI_ERROR (Status)) {
goto Done;
}

Status = PciIo->Attributes (
               PciIo,


               EfiPciIoAttributeOperationSupported,


               0,


               &Supports


               );



if (!EFI_ERROR (Status)) {
Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
Status    = PciIo->Attributes (
                    PciIo,


                    EfiPciIoAttributeOperationEnable,


                    Supports,


                    NULL


                    );


} else {
goto Done;
}

Private = AllocateCopyPool (sizeof (SD_MMC_HC_PRIVATE_DATA), &gSdMmcPciHcTemplate);
if (Private == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}

Private->ControllerHandle = Controller;
Private->PciIo            = PciIo;
Private->PciAttributes    = PciAttributes;
InitializeListHead (&Private->Queue);

//
// Get SD/MMC Pci Host Controller Slot info
//
Status = SdMmcHcGetSlotInfo (PciIo, &FirstBar, &SlotNum);
if (EFI_ERROR (Status)) {
goto Done;
}

Support64BitDma = TRUE;
for (Slot = FirstBar; Slot < (FirstBar + SlotNum); Slot++) {
Private->Slot[Slot].Enable = TRUE;

Status = SdMmcHcGetCapability (PciIo, Slot, &Private->Capability[Slot]);
if (EFI_ERROR (Status)) {
 continue;


}
DumpCapabilityReg (Slot, &Private->Capability[Slot]);

Support64BitDma &= Private->Capability[Slot].SysBus64;

Status = SdMmcHcGetMaxCurrent (PciIo, Slot, &Private->MaxCurrent[Slot]);
if (EFI_ERROR (Status)) {
 continue;


}

Private->Slot[Slot].SlotType = Private->Capability[Slot].SlotType;
if ((Private->Slot[Slot].SlotType != RemovableSlot) && (Private->Slot[Slot].SlotType != EmbeddedSlot)) {
 DEBUG ((DEBUG_INFO, "SdMmcPciHcDxe doesn't support the slot type [%d]!!!\n", Private->Slot[Slot].SlotType));


 continue;


}

//
// Reset the specified slot of the SD/MMC Pci Host Controller
//
Status = SdMmcHcReset (PciIo, Slot);
if (EFI_ERROR (Status)) {
 continue;


}
//
// Check whether there is a SD/MMC card attached
//
Status = SdMmcHcCardDetect (PciIo, Slot, &MediaPresent);
if (EFI_ERROR (Status) && (Status != EFI_MEDIA_CHANGED)) {
 continue;


} else if (!MediaPresent) {
 DEBUG ((EFI_ERROR, "SdMmcHcCardDetect: No device attached in Slot[%d]!!!\n", Slot));


 continue;


}

Status = SdMmcHcInitHost (PciIo, Slot, Private->Capability[Slot]);
if (EFI_ERROR (Status)) {
 continue;


}

Private->Slot[Slot].MediaPresent = TRUE;
Private->Slot[Slot].Initialized  = TRUE;
RoutineNum = sizeof (mCardTypeDetectRoutineTable) / sizeof (CARD_TYPE_DETECT_ROUTINE);
for (Index = 0; Index < RoutineNum; Index++) {
 Routine = &mCardTypeDetectRoutineTable[Index];


 if (*Routine != NULL) {


   Status = (*Routine) (Private, Slot);


   if (!EFI_ERROR (Status)) {


     break;


   }


 }


}
//
// This card doesn't get initialized correctly.
//
if (Index == RoutineNum) {
 Private->Slot[Slot].Initialized = FALSE;


}
}

//
// Enable 64-bit DMA support in the PCI layer if this controller
// supports it.
//
if (Support64BitDma) {
Status = PciIo->Attributes (
                 PciIo,


                 EfiPciIoAttributeOperationEnable,


                 EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,


                 NULL


                 );


if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_WARN, "SdMmcPciHcDriverBindingStart: failed to enable 64-bit DMA (%r)\n", Status));


}
}

//
// Start the asynchronous I/O monitor
//
Status = gBS->CreateEvent (
             EVT_TIMER | EVT_NOTIFY_SIGNAL,


             TPL_NOTIFY,


             ProcessAsyncTaskList,


             Private,


             &Private->TimerEvent


             );


if (EFI_ERROR (Status)) {
goto Done;
}

Status = gBS->SetTimer (Private->TimerEvent, TimerPeriodic, SD_MMC_HC_ASYNC_TIMER);
if (EFI_ERROR (Status)) {
goto Done;
}

//
// Start the Sd removable device connection enumeration
//
Status = gBS->CreateEvent (
             EVT_TIMER | EVT_NOTIFY_SIGNAL,


             TPL_CALLBACK,


             SdMmcPciHcEnumerateDevice,


             Private,


             &Private->ConnectEvent


             );


if (EFI_ERROR (Status)) {
goto Done;
}

Status = gBS->SetTimer (Private->ConnectEvent, TimerPeriodic, SD_MMC_HC_ENUM_TIMER);
if (EFI_ERROR (Status)) {
goto Done;
}

Status = gBS->InstallMultipleProtocolInterfaces (
             &Controller,


             &gEfiSdMmcPassThruProtocolGuid,


             &(Private->PassThru),


             NULL


             );



DEBUG ((DEBUG_INFO, "SdMmcPciHcDriverBindingStart: %r End on %x\n", Status, Controller));


+Done:

if (EFI_ERROR (Status)) {
if ((Private != NULL) && (Private->PciAttributes != 0)) {
 //


 // Restore original PCI attributes


 //


 PciIo->Attributes (


          PciIo,


          EfiPciIoAttributeOperationSet,


          Private->PciAttributes,


          NULL


          );


}
gBS->CloseProtocol (
     Controller,


     &gEfiPciIoProtocolGuid,


     This->DriverBindingHandle,


     Controller


     );



if ((Private != NULL) && (Private->TimerEvent != NULL)) {
 gBS->CloseEvent (Private->TimerEvent);


}

if ((Private != NULL) && (Private->ConnectEvent != NULL)) {
 gBS->CloseEvent (Private->ConnectEvent);


}

if (Private != NULL) {
 FreePool (Private);


}
}

return Status;

+}



+/**

Stops a device controller or a bus controller.

The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
As a result, much of the error checking on the parameters to Stop() has been moved
into this common boot service. It is legal to call Stop() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.

ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this


same driver's Start() function.



The first NumberOfChildren handles of ChildHandleBuffer must all be a valid


EFI_HANDLE. In addition, all of these handles must have been created in this driver's


Start() function, and the Start() function must have called OpenProtocol() on


ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.



@param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in]  ControllerHandle  A handle to the device being stopped. The handle must
                           support a bus specific I/O protocol for the driver


                           to use to stop the device.


@param[in]  NumberOfChildren  The number of child device handles in ChildHandleBuffer.
@param[in]  ChildHandleBuffer An array of child handles to be freed. May be NULL
                           if NumberOfChildren is 0.



@retval EFI_SUCCESS           The device was stopped.
@retval EFI_DEVICE_ERROR      The device could not be stopped due to a device error.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcDriverBindingStop (

IN  EFI_DRIVER_BINDING_PROTOCOL     *This,
IN  EFI_HANDLE                      Controller,
IN  UINTN                           NumberOfChildren,
IN  EFI_HANDLE                      *ChildHandleBuffer
)

+{

EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_PROTOCOL       *PassThru;
SD_MMC_HC_PRIVATE_DATA              *Private;
EFI_PCI_IO_PROTOCOL                 *PciIo;
LIST_ENTRY                          *Link;
LIST_ENTRY                          *NextLink;
SD_MMC_HC_TRB                       *Trb;

DEBUG ((DEBUG_INFO, "SdMmcPciHcDriverBindingStop: Start\n"));

Status = gBS->OpenProtocol (
             Controller,


             &gEfiSdMmcPassThruProtocolGuid,


             (VOID**) &PassThru,


             This->DriverBindingHandle,


             Controller,


             EFI_OPEN_PROTOCOL_GET_PROTOCOL


             );


if (EFI_ERROR (Status)) {
return Status;
}

Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);
//
// Close Non-Blocking timer and free Task list.
//
if (Private->TimerEvent != NULL) {
gBS->CloseEvent (Private->TimerEvent);
Private->TimerEvent = NULL;
}
if (Private->ConnectEvent != NULL) {
gBS->CloseEvent (Private->ConnectEvent);
Private->ConnectEvent = NULL;
}
//
// As the timer is closed, there is no needs to use TPL lock to
// protect the critical region "queue".
//
for (Link = GetFirstNode (&Private->Queue);
  !IsNull (&Private->Queue, Link);


  Link = NextLink) {


NextLink = GetNextNode (&Private->Queue, Link);
RemoveEntryList (Link);
Trb = SD_MMC_HC_TRB_FROM_THIS (Link);
Trb->Packet->TransactionStatus = EFI_ABORTED;
gBS->SignalEvent (Trb->Event);
SdMmcFreeTrb (Trb);
}

//
// Uninstall Block I/O protocol from the device handle
//
Status = gBS->UninstallProtocolInterface (
             Controller,


             &gEfiSdMmcPassThruProtocolGuid,


             &(Private->PassThru)


             );



if (EFI_ERROR (Status)) {
return Status;
}

gBS->CloseProtocol (
    Controller,


    &gEfiPciIoProtocolGuid,


    This->DriverBindingHandle,


    Controller


    );


//
// Restore original PCI attributes
//
PciIo  = Private->PciIo;
Status = PciIo->Attributes (
               PciIo,


               EfiPciIoAttributeOperationSet,


               Private->PciAttributes,


               NULL


               );


ASSERT_EFI_ERROR (Status);

FreePool (Private);

DEBUG ((DEBUG_INFO, "SdMmcPciHcDriverBindingStop: End with %r\n", Status));

return Status;

+}



+/**

Sends SD command to an SD card that is attached to the SD controller.

The PassThru() function sends the SD command specified by Packet to the SD card
specified by Slot.

If Packet is successfully sent to the SD card, then EFI_SUCCESS is returned.

If a device error occurs while sending the Packet, then EFI_DEVICE_ERROR is returned.

If Slot is not in a valid range for the SD controller, then EFI_INVALID_PARAMETER
is returned.

If Packet defines a data command but both InDataBuffer and OutDataBuffer are NULL,
EFI_INVALID_PARAMETER is returned.

@param[in]     This           A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]     Slot           The slot number of the SD card to send the command to.
@param[in,out] Packet         A pointer to the SD command data structure.
@param[in]     Event          If Event is NULL, blocking I/O is performed. If Event is
                           not NULL, then nonblocking I/O is performed, and Event


                           will be signaled when the Packet completes.



@retval EFI_SUCCESS           The SD Command Packet was sent by the host.
@retval EFI_DEVICE_ERROR      A device error occurred while attempting to send the SD
                           command Packet.


@retval EFI_INVALID_PARAMETER Packet, Slot, or the contents of the Packet is invalid.
@retval EFI_INVALID_PARAMETER Packet defines a data command but both InDataBuffer and
                           OutDataBuffer are NULL.


@retval EFI_NO_MEDIA          SD Device not present in the Slot.
@retval EFI_UNSUPPORTED       The command described by the SD Command Packet is not
                           supported by the host controller.


@retval EFI_BAD_BUFFER_SIZE   The InTransferLength or OutTransferLength exceeds the
                           limit supported by SD card ( i.e. if the number of bytes


                           exceed the Last LBA).




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruPassThru (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL         *This,
IN     UINT8                                 Slot,
IN OUT EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   *Packet,
IN     EFI_EVENT                             Event    OPTIONAL
)

+{

EFI_STATUS                      Status;
SD_MMC_HC_PRIVATE_DATA          *Private;
SD_MMC_HC_TRB                   *Trb;
EFI_TPL                         OldTpl;

if ((This == NULL) || (Packet == NULL)) {
return EFI_INVALID_PARAMETER;
}

if ((Packet->SdMmcCmdBlk == NULL) || (Packet->SdMmcStatusBlk == NULL)) {
return EFI_INVALID_PARAMETER;
}

if ((Packet->OutDataBuffer == NULL) && (Packet->OutTransferLength != 0)) {
return EFI_INVALID_PARAMETER;
}

if ((Packet->InDataBuffer == NULL) && (Packet->InTransferLength != 0)) {
return EFI_INVALID_PARAMETER;
}

Private = SD_MMC_HC_PRIVATE_FROM_THIS (This);

if (!Private->Slot[Slot].Enable) {
return EFI_INVALID_PARAMETER;
}

if (!Private->Slot[Slot].MediaPresent) {
return EFI_NO_MEDIA;
}

if (!Private->Slot[Slot].Initialized) {
return EFI_DEVICE_ERROR;
}

Trb = SdMmcCreateTrb (Private, Slot, Packet, Event);
if (Trb == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Immediately return for async I/O.
//
if (Event != NULL) {
return EFI_SUCCESS;
}

//
// Wait async I/O list is empty before execute sync I/O operation.
//
while (TRUE) {
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
if (IsListEmpty (&Private->Queue)) {
 gBS->RestoreTPL (OldTpl);


 break;


}
gBS->RestoreTPL (OldTpl);
}

Status = SdMmcWaitTrbEnv (Private, Trb);
if (EFI_ERROR (Status)) {
goto Done;
}

Status = SdMmcExecTrb (Private, Trb);
if (EFI_ERROR (Status)) {
goto Done;
}

Status = SdMmcWaitTrbResult (Private, Trb);
if (EFI_ERROR (Status)) {
goto Done;
}


+Done:

if ((Trb != NULL) && (Trb->AdmaDesc != NULL)) {
FreePages (Trb->AdmaDesc, Trb->AdmaPages);
}

if (Trb != NULL) {
FreePool (Trb);
}

return Status;

+}



+/**

Used to retrieve next slot numbers supported by the SD controller. The function
returns information about all available slots (populated or not-populated).

The GetNextSlot() function retrieves the next slot number on an SD controller.
If on input Slot is 0xFF, then the slot number of the first slot on the SD controller
is returned.

If Slot is a slot number that was returned on a previous call to GetNextSlot(), then
the slot number of the next slot on the SD controller is returned.

If Slot is not 0xFF and Slot was not returned on a previous call to GetNextSlot(),
EFI_INVALID_PARAMETER is returned.

If Slot is the slot number of the last slot on the SD controller, then EFI_NOT_FOUND
is returned.

@param[in]     This           A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.
@param[in,out] Slot           On input, a pointer to a slot number on the SD controller.
                           On output, a pointer to the next slot number on the SD controller.


                           An input value of 0xFF retrieves the first slot number on the SD


                           controller.



@retval EFI_SUCCESS           The next slot number on the SD controller was returned in Slot.
@retval EFI_NOT_FOUND         There are no more slots on this SD controller.
@retval EFI_INVALID_PARAMETER Slot is not 0xFF and Slot was not returned on a previous call
                           to GetNextSlot().




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruGetNextSlot (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL        *This,
IN OUT UINT8                                *Slot
)

+{

SD_MMC_HC_PRIVATE_DATA          *Private;
UINT8                           Index;

if ((This == NULL) || (Slot == NULL)) {
return EFI_INVALID_PARAMETER;
}

Private = SD_MMC_HC_PRIVATE_FROM_THIS (This);

if (*Slot == 0xFF) {
for (Index = 0; Index < SD_MMC_HC_MAX_SLOT; Index++) {
 if (Private->Slot[Index].Enable) {


   *Slot = Index;


   Private->PreviousSlot = Index;


   return EFI_SUCCESS;


 }


}
return EFI_NOT_FOUND;
} else if (*Slot == Private->PreviousSlot) {
for (Index = *Slot + 1; Index < SD_MMC_HC_MAX_SLOT; Index++) {
 if (Private->Slot[Index].Enable) {


   *Slot = Index;


   Private->PreviousSlot = Index;


   return EFI_SUCCESS;


 }


}
return EFI_NOT_FOUND;
} else {
return EFI_INVALID_PARAMETER;
}

+}



+/**

Used to allocate and build a device path node for an SD card on the SD controller.

The BuildDevicePath() function allocates and builds a single device node for the SD
card specified by Slot.

If the SD card specified by Slot is not present on the SD controller, then EFI_NOT_FOUND
is returned.

If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned.

If there are not enough resources to allocate the device path node, then EFI_OUT_OF_RESOURCES
is returned.

Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of
DevicePath are initialized to describe the SD card specified by Slot, and EFI_SUCCESS is
returned.

@param[in]     This           A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.
@param[in]     Slot           Specifies the slot number of the SD card for which a device
                           path node is to be allocated and built.


@param[in,out] DevicePath     A pointer to a single device path node that describes the SD
                           card specified by Slot. This function is responsible for


                           allocating the buffer DevicePath with the boot service


                           AllocatePool(). It is the caller's responsibility to free


                           DevicePath when the caller is finished with DevicePath.



@retval EFI_SUCCESS           The device path node that describes the SD card specified by
                           Slot was allocated and returned in DevicePath.


@retval EFI_NOT_FOUND         The SD card specified by Slot does not exist on the SD controller.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_OUT_OF_RESOURCES  There are not enough resources to allocate DevicePath.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruBuildDevicePath (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL       *This,
IN     UINT8                               Slot,
IN OUT EFI_DEVICE_PATH_PROTOCOL            **DevicePath
)

+{

SD_MMC_HC_PRIVATE_DATA          *Private;
SD_DEVICE_PATH                  *SdNode;
EMMC_DEVICE_PATH                *EmmcNode;

if ((This == NULL) || (DevicePath == NULL) || (Slot >= SD_MMC_HC_MAX_SLOT)) {
return EFI_INVALID_PARAMETER;
}

Private = SD_MMC_HC_PRIVATE_FROM_THIS (This);

if ((!Private->Slot[Slot].Enable) || (!Private->Slot[Slot].MediaPresent)) {
return EFI_NOT_FOUND;
}

if (Private->Slot[Slot].CardType == SdCardType) {
SdNode = AllocateCopyPool (sizeof (SD_DEVICE_PATH), &mSdDpTemplate);
if (SdNode == NULL) {
 return EFI_OUT_OF_RESOURCES;


}
SdNode->SlotNumber = Slot;

*DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) SdNode;
} else if (Private->Slot[Slot].CardType == EmmcCardType) {
EmmcNode = AllocateCopyPool (sizeof (EMMC_DEVICE_PATH), &mEmmcDpTemplate);
if (EmmcNode == NULL) {
 return EFI_OUT_OF_RESOURCES;


}
EmmcNode->SlotNumber = Slot;

*DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) EmmcNode;
} else {
//
// Currently we only support SD and EMMC two device nodes.
//
return EFI_NOT_FOUND;
}

return EFI_SUCCESS;

+}



+/**

This function retrieves an SD card slot number based on the input device path.

The GetSlotNumber() function retrieves slot number for the SD card specified by
the DevicePath node. If DevicePath is NULL, EFI_INVALID_PARAMETER is returned.

If DevicePath is not a device path node type that the SD Pass Thru driver supports,
EFI_UNSUPPORTED is returned.

@param[in]  This              A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  DevicePath        A pointer to the device path node that describes a SD
                           card on the SD controller.


@param[out] Slot              On return, points to the slot number of an SD card on
                           the SD controller.



@retval EFI_SUCCESS           SD card slot number is returned in Slot.
@retval EFI_INVALID_PARAMETER Slot or DevicePath is NULL.
@retval EFI_UNSUPPORTED       DevicePath is not a device path node type that the SD
                           Pass Thru driver supports.




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruGetSlotNumber (

IN  EFI_SD_MMC_PASS_THRU_PROTOCOL          *This,
IN  EFI_DEVICE_PATH_PROTOCOL               *DevicePath,
OUT UINT8                                  *Slot
)

+{

SD_MMC_HC_PRIVATE_DATA          *Private;
SD_DEVICE_PATH                  *SdNode;
EMMC_DEVICE_PATH                *EmmcNode;
UINT8                           SlotNumber;

if ((This == NULL) || (DevicePath == NULL) || (Slot == NULL)) {
return EFI_INVALID_PARAMETER;
}

Private = SD_MMC_HC_PRIVATE_FROM_THIS (This);

//
// Check whether the DevicePath belongs to SD_DEVICE_PATH or EMMC_DEVICE_PATH
//
if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||
 ((DevicePath->SubType != MSG_SD_DP) &&


  (DevicePath->SubType != MSG_EMMC_DP)) ||


 (DevicePathNodeLength(DevicePath) != sizeof(SD_DEVICE_PATH)) ||


 (DevicePathNodeLength(DevicePath) != sizeof(EMMC_DEVICE_PATH))) {


return EFI_UNSUPPORTED;
}

if (DevicePath->SubType == MSG_SD_DP) {
SdNode = (SD_DEVICE_PATH *) DevicePath;
SlotNumber = SdNode->SlotNumber;
} else {
EmmcNode = (EMMC_DEVICE_PATH *) DevicePath;
SlotNumber = EmmcNode->SlotNumber;
}

if (SlotNumber >= SD_MMC_HC_MAX_SLOT) {
return EFI_NOT_FOUND;
}

if (Private->Slot[SlotNumber].Enable) {
*Slot = SlotNumber;
return EFI_SUCCESS;
} else {
return EFI_NOT_FOUND;
}

+}



+/**

Resets an SD card that is connected to the SD controller.

The ResetDevice() function resets the SD card specified by Slot.

If this SD controller does not support a device reset operation, EFI_UNSUPPORTED is
returned.

If Slot is not in a valid slot number for this SD controller, EFI_INVALID_PARAMETER
is returned.

If the device reset operation is completed, EFI_SUCCESS is returned.

@param[in]  This              A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot              Specifies the slot number of the SD card to be reset.

@retval EFI_SUCCESS           The SD card specified by Slot was reset.
@retval EFI_UNSUPPORTED       The SD controller does not support a device reset operation.
@retval EFI_INVALID_PARAMETER Slot number is invalid.
@retval EFI_NO_MEDIA          SD Device not present in the Slot.
@retval EFI_DEVICE_ERROR      The reset command failed due to a device error


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruResetDevice (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL           *This,
IN UINT8                                   Slot
)

+{

SD_MMC_HC_PRIVATE_DATA          *Private;
LIST_ENTRY                      *Link;
LIST_ENTRY                      *NextLink;
SD_MMC_HC_TRB                   *Trb;
EFI_TPL                         OldTpl;

if (This == NULL) {
return EFI_INVALID_PARAMETER;
}

Private = SD_MMC_HC_PRIVATE_FROM_THIS (This);

if (!Private->Slot[Slot].Enable) {
return EFI_INVALID_PARAMETER;
}

if (!Private->Slot[Slot].MediaPresent) {
return EFI_NO_MEDIA;
}

if (!Private->Slot[Slot].Initialized) {
return EFI_DEVICE_ERROR;
}
//
// Free all async I/O requests in the queue
//
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);

for (Link = GetFirstNode (&Private->Queue);
  !IsNull (&Private->Queue, Link);


  Link = NextLink) {


NextLink = GetNextNode (&Private->Queue, Link);
RemoveEntryList (Link);
Trb = SD_MMC_HC_TRB_FROM_THIS (Link);
Trb->Packet->TransactionStatus = EFI_ABORTED;
gBS->SignalEvent (Trb->Event);
SdMmcFreeTrb (Trb);
}

gBS->RestoreTPL (OldTpl);

return EFI_SUCCESS;

+}



diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.h b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.h
new file mode 100644
index 0000000..6a2a279
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.h
@@ -0,0 +1,785 @@
+/** @file


Provides some data structure definitions used by the SD/MMC host controller driver.


+Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php



+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.



+**/



+#ifndef _SD_MMC_PCI_HC_DXE_H_
+#define _SD_MMC_PCI_HC_DXE_H_



+#include <Uefi.h>



+#include <IndustryStandard/Pci.h>
+#include <IndustryStandard/Emmc.h>
+#include <IndustryStandard/Sd.h>



+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiLib.h>
+#include <Library/DevicePathLib.h>



+#include <Protocol/DevicePath.h>
+#include <Protocol/PciIo.h>
+#include <Protocol/DriverBinding.h>
+#include <Protocol/ComponentName.h>
+#include <Protocol/ComponentName2.h>
+#include <Protocol/SdMmcPassThru.h>



+#include "SdMmcPciHci.h"



+extern EFI_COMPONENT_NAME_PROTOCOL  gSdMmcPciHcComponentName;
+extern EFI_COMPONENT_NAME2_PROTOCOL gSdMmcPciHcComponentName2;
+extern EFI_DRIVER_BINDING_PROTOCOL  gSdMmcPciHcDriverBinding;



+#define SD_MMC_HC_PRIVATE_SIGNATURE  SIGNATURE_32 ('s', 'd', 't', 'f')



+#define SD_MMC_HC_PRIVATE_FROM_THIS(a) \

CR(a, SD_MMC_HC_PRIVATE_DATA, PassThru, SD_MMC_HC_PRIVATE_SIGNATURE)


+//
+// Generic time out value, 1 microsecond as unit.
+//
+#define SD_MMC_HC_GENERIC_TIMEOUT     1 * 1000 * 1000



+//
+// SD/MMC async transfer timer interval, set by experience.
+// The unit is 100us, takes 1ms as interval.
+//
+#define SD_MMC_HC_ASYNC_TIMER   EFI_TIMER_PERIOD_MILLISECONDS(1)
+//
+// SD/MMC removable device enumeration timer interval, set by experience.
+// The unit is 100us, takes 100ms as interval.
+//
+#define SD_MMC_HC_ENUM_TIMER    EFI_TIMER_PERIOD_MILLISECONDS(100)



+typedef enum {

UnknownCardType,
SdCardType,
SdioCardType,
MmcCardType,
EmmcCardType

+} SD_MMC_CARD_TYPE;



+typedef enum {

RemovableSlot,
EmbeddedSlot,
SharedBusSlot,
UnknownSlot

+} EFI_SD_MMC_SLOT_TYPE;



+typedef struct {

BOOLEAN                           Enable;
EFI_SD_MMC_SLOT_TYPE              SlotType;
BOOLEAN                           MediaPresent;
BOOLEAN                           Initialized;
SD_MMC_CARD_TYPE                  CardType;

+} SD_MMC_HC_SLOT;



+typedef struct {

UINTN                               Signature;

EFI_HANDLE                          ControllerHandle;
EFI_PCI_IO_PROTOCOL                 *PciIo;

EFI_SD_MMC_PASS_THRU_PROTOCOL       PassThru;

UINT64                              PciAttributes;
//
// The field is used to record the previous slot in GetNextSlot().
//
UINT8                               PreviousSlot;
//
// For Non-blocking operation.
//
EFI_EVENT                           TimerEvent;
//
// For Sd removable device enumeration.
//
EFI_EVENT                           ConnectEvent;
LIST_ENTRY                          Queue;

SD_MMC_HC_SLOT                      Slot[SD_MMC_HC_MAX_SLOT];
SD_MMC_HC_SLOT_CAP                  Capability[SD_MMC_HC_MAX_SLOT];
UINT64                              MaxCurrent[SD_MMC_HC_MAX_SLOT];

UINT32                              ControllerVersion;

+} SD_MMC_HC_PRIVATE_DATA;



+#define SD_MMC_HC_TRB_SIG             SIGNATURE_32 ('T', 'R', 'B', 'T')



+//
+// TRB (Transfer Request Block) contains information for the cmd request.
+//
+typedef struct {

UINT32                              Signature;
LIST_ENTRY                          TrbList;

UINT8                               Slot;
UINT16                              BlockSize;

EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
VOID                                *Data;
UINT32                              DataLen;
BOOLEAN                             Read;
EFI_PHYSICAL_ADDRESS                DataPhy;
VOID                                *DataMap;
SD_MMC_HC_TRANSFER_MODE             Mode;

EFI_EVENT                           Event;
BOOLEAN                             Started;
UINT64                              Timeout;

SD_MMC_HC_ADMA_DESC_LINE            *AdmaDesc;
EFI_PHYSICAL_ADDRESS                AdmaDescPhy;
VOID                                *AdmaMap;
UINT32                              AdmaPages;

SD_MMC_HC_PRIVATE_DATA              *Private;

+} SD_MMC_HC_TRB;



+#define SD_MMC_HC_TRB_FROM_THIS(a) \

CR(a, SD_MMC_HC_TRB, TrbList, SD_MMC_HC_TRB_SIG)


+//
+// Task for Non-blocking mode.
+//
+typedef struct {

UINT32                              Signature;
LIST_ENTRY                          Link;

UINT8                               Slot;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
BOOLEAN                             IsStart;
EFI_EVENT                           Event;
UINT64                              RetryTimes;
BOOLEAN                             InfiniteWait;
VOID                                *Map;
VOID                                *MapAddress;

+} SD_MMC_HC_QUEUE;



+//
+// Prototypes
+//
+/**

Execute card identification procedure.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The card is identified correctly.
@retval Others            The card can't be identified.


+**/
+typedef
+EFI_STATUS
+(*CARD_TYPE_DETECT_ROUTINE) (

IN SD_MMC_HC_PRIVATE_DATA             *Private,
IN UINT8                              Slot
);


+/**

Sends SD command to an SD card that is attached to the SD controller.

The PassThru() function sends the SD command specified by Packet to the SD card
specified by Slot.

If Packet is successfully sent to the SD card, then EFI_SUCCESS is returned.

If a device error occurs while sending the Packet, then EFI_DEVICE_ERROR is returned.

If Slot is not in a valid range for the SD controller, then EFI_INVALID_PARAMETER
is returned.

If Packet defines a data command but both InDataBuffer and OutDataBuffer are NULL,
EFI_INVALID_PARAMETER is returned.

@param[in]     This           A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]     Slot           The slot number of the SD card to send the command to.
@param[in,out] Packet         A pointer to the SD command data structure.
@param[in]     Event          If Event is NULL, blocking I/O is performed. If Event is
                           not NULL, then nonblocking I/O is performed, and Event


                           will be signaled when the Packet completes.



@retval EFI_SUCCESS           The SD Command Packet was sent by the host.
@retval EFI_DEVICE_ERROR      A device error occurred while attempting to send the SD
                           command Packet.


@retval EFI_INVALID_PARAMETER Packet, Slot, or the contents of the Packet is invalid.
@retval EFI_INVALID_PARAMETER Packet defines a data command but both InDataBuffer and
                           OutDataBuffer are NULL.


@retval EFI_NO_MEDIA          SD Device not present in the Slot.
@retval EFI_UNSUPPORTED       The command described by the SD Command Packet is not
                           supported by the host controller.


@retval EFI_BAD_BUFFER_SIZE   The InTransferLength or OutTransferLength exceeds the
                           limit supported by SD card ( i.e. if the number of bytes


                           exceed the Last LBA).




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruPassThru (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL         *This,
IN     UINT8                                 Slot,
IN OUT EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   *Packet,
IN     EFI_EVENT                             Event    OPTIONAL
);


+/**

Used to retrieve next slot numbers supported by the SD controller. The function
returns information about all available slots (populated or not-populated).

The GetNextSlot() function retrieves the next slot number on an SD controller.
If on input Slot is 0xFF, then the slot number of the first slot on the SD controller
is returned.

If Slot is a slot number that was returned on a previous call to GetNextSlot(), then
the slot number of the next slot on the SD controller is returned.

If Slot is not 0xFF and Slot was not returned on a previous call to GetNextSlot(),
EFI_INVALID_PARAMETER is returned.

If Slot is the slot number of the last slot on the SD controller, then EFI_NOT_FOUND
is returned.

@param[in]     This           A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.
@param[in,out] Slot           On input, a pointer to a slot number on the SD controller.
                           On output, a pointer to the next slot number on the SD controller.


                           An input value of 0xFF retrieves the first slot number on the SD


                           controller.



@retval EFI_SUCCESS           The next slot number on the SD controller was returned in Slot.
@retval EFI_NOT_FOUND         There are no more slots on this SD controller.
@retval EFI_INVALID_PARAMETER Slot is not 0xFF and Slot was not returned on a previous call
                           to GetNextSlot().




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruGetNextSlot (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL        *This,
IN OUT UINT8                                *Slot
);


+/**

Used to allocate and build a device path node for an SD card on the SD controller.

The BuildDevicePath() function allocates and builds a single device node for the SD
card specified by Slot.

If the SD card specified by Slot is not present on the SD controller, then EFI_NOT_FOUND
is returned.

If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned.

If there are not enough resources to allocate the device path node, then EFI_OUT_OF_RESOURCES
is returned.

Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of
DevicePath are initialized to describe the SD card specified by Slot, and EFI_SUCCESS is
returned.

@param[in]     This           A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.
@param[in]     Slot           Specifies the slot number of the SD card for which a device
                           path node is to be allocated and built.


@param[in,out] DevicePath     A pointer to a single device path node that describes the SD
                           card specified by Slot. This function is responsible for


                           allocating the buffer DevicePath with the boot service


                           AllocatePool(). It is the caller's responsibility to free


                           DevicePath when the caller is finished with DevicePath.



@retval EFI_SUCCESS           The device path node that describes the SD card specified by
                           Slot was allocated and returned in DevicePath.


@retval EFI_NOT_FOUND         The SD card specified by Slot does not exist on the SD controller.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_OUT_OF_RESOURCES  There are not enough resources to allocate DevicePath.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruBuildDevicePath (

IN     EFI_SD_MMC_PASS_THRU_PROTOCOL       *This,
IN     UINT8                               Slot,
IN OUT EFI_DEVICE_PATH_PROTOCOL            **DevicePath
);


+/**

This function retrieves an SD card slot number based on the input device path.

The GetSlotNumber() function retrieves slot number for the SD card specified by
the DevicePath node. If DevicePath is NULL, EFI_INVALID_PARAMETER is returned.

If DevicePath is not a device path node type that the SD Pass Thru driver supports,
EFI_UNSUPPORTED is returned.

@param[in]  This              A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  DevicePath        A pointer to the device path node that describes a SD
                           card on the SD controller.


@param[out] Slot              On return, points to the slot number of an SD card on
                           the SD controller.



@retval EFI_SUCCESS           SD card slot number is returned in Slot.
@retval EFI_INVALID_PARAMETER Slot or DevicePath is NULL.
@retval EFI_UNSUPPORTED       DevicePath is not a device path node type that the SD
                           Pass Thru driver supports.




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruGetSlotNumber (

IN  EFI_SD_MMC_PASS_THRU_PROTOCOL          *This,
IN  EFI_DEVICE_PATH_PROTOCOL               *DevicePath,
OUT UINT8                                  *Slot
);


+/**

Resets an SD card that is connected to the SD controller.

The ResetDevice() function resets the SD card specified by Slot.

If this SD controller does not support a device reset operation, EFI_UNSUPPORTED is
returned.

If Slot is not in a valid slot number for this SD controller, EFI_INVALID_PARAMETER
is returned.

If the device reset operation is completed, EFI_SUCCESS is returned.

@param[in]  This              A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
@param[in]  Slot              Specifies the slot number of the SD card to be reset.

@retval EFI_SUCCESS           The SD card specified by Slot was reset.
@retval EFI_UNSUPPORTED       The SD controller does not support a device reset operation.
@retval EFI_INVALID_PARAMETER Slot number is invalid.
@retval EFI_NO_MEDIA          SD Device not present in the Slot.
@retval EFI_DEVICE_ERROR      The reset command failed due to a device error


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPassThruResetDevice (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL           *This,
IN UINT8                                   Slot
);


+//
+// Driver model protocol interfaces
+//
+/**

Tests to see if this driver supports a given controller. If a child device is provided,
it further tests to see if this driver supports creating a handle for the specified child device.

This function checks to see if the driver specified by This supports the device specified by
ControllerHandle. Drivers will typically use the device path attached to
ControllerHandle and/or the services from the bus I/O abstraction attached to
ControllerHandle to determine if the driver supports ControllerHandle. This function
may be called many times during platform initialization. In order to reduce boot times, the tests
performed by this function must be very small, and take as little time as possible to execute. This
function must not change the state of any hardware devices, and this function must be aware that the
device specified by ControllerHandle may already be managed by the same driver or a
different driver. This function must match its calls to AllocatePages() with FreePages(),
AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
Since ControllerHandle may have been previously started by the same driver, if a protocol is
already in the opened state, then it must not be closed with CloseProtocol(). This is required
to guarantee the state of ControllerHandle is not modified by this function.

@param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in]  ControllerHandle     The handle of the controller to test. This handle
                              must support a protocol interface that supplies


                              an I/O abstraction to the driver.


@param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This
                              parameter is ignored by device drivers, and is optional for bus


                              drivers. For bus drivers, if this parameter is not NULL, then


                              the bus driver must determine if the bus controller specified


                              by ControllerHandle and the child controller specified


                              by RemainingDevicePath are both supported by this


                              bus driver.



@retval EFI_SUCCESS              The device specified by ControllerHandle and
                              RemainingDevicePath is supported by the driver specified by This.


@retval EFI_ALREADY_STARTED      The device specified by ControllerHandle and
                              RemainingDevicePath is already being managed by the driver


                              specified by This.


@retval EFI_ACCESS_DENIED        The device specified by ControllerHandle and
                              RemainingDevicePath is already being managed by a different


                              driver or an application that requires exclusive access.


                              Currently not implemented.


@retval EFI_UNSUPPORTED          The device specified by ControllerHandle and
                              RemainingDevicePath is not supported by the driver specified by This.



+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcDriverBindingSupported (

IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE                  Controller,
IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath
);


+/**

Starts a device controller or a bus controller.

The Start() function is designed to be invoked from the EFI boot service ConnectController().
As a result, much of the error checking on the parameters to Start() has been moved into this
common boot service. It is legal to call Start() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.

ControllerHandle must be a valid EFI_HANDLE.



If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned


EFI_DEVICE_PATH_PROTOCOL.



Prior to calling Start(), the Supported() function for the driver specified by This must


have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.



@param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in]  ControllerHandle     The handle of the controller to start. This handle
                              must support a protocol interface that supplies


                              an I/O abstraction to the driver.


@param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This
                              parameter is ignored by device drivers, and is optional for bus


                              drivers. For a bus driver, if this parameter is NULL, then handles


                              for all the children of Controller are created by this driver.


                              If this parameter is not NULL and the first Device Path Node is


                              not the End of Device Path Node, then only the handle for the


                              child device specified by the first Device Path Node of


                              RemainingDevicePath is created by this driver.


                              If the first Device Path Node of RemainingDevicePath is


                              the End of Device Path Node, no child handle is created by this


                              driver.



@retval EFI_SUCCESS              The device was started.
@retval EFI_DEVICE_ERROR         The device could not be started due to a device error.Currently not implemented.
@retval EFI_OUT_OF_RESOURCES     The request could not be completed due to a lack of resources.
@retval Others                   The driver failded to start the device.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcDriverBindingStart (

IN EFI_DRIVER_BINDING_PROTOCOL     *This,
IN EFI_HANDLE                      Controller,
IN EFI_DEVICE_PATH_PROTOCOL        *RemainingDevicePath
);


+/**

Stops a device controller or a bus controller.

The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
As a result, much of the error checking on the parameters to Stop() has been moved
into this common boot service. It is legal to call Stop() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.

ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this


same driver's Start() function.



The first NumberOfChildren handles of ChildHandleBuffer must all be a valid


EFI_HANDLE. In addition, all of these handles must have been created in this driver's


Start() function, and the Start() function must have called OpenProtocol() on


ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.



@param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in]  ControllerHandle  A handle to the device being stopped. The handle must
                           support a bus specific I/O protocol for the driver


                           to use to stop the device.


@param[in]  NumberOfChildren  The number of child device handles in ChildHandleBuffer.
@param[in]  ChildHandleBuffer An array of child handles to be freed. May be NULL
                           if NumberOfChildren is 0.



@retval EFI_SUCCESS           The device was stopped.
@retval EFI_DEVICE_ERROR      The device could not be stopped due to a device error.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcDriverBindingStop (

IN  EFI_DRIVER_BINDING_PROTOCOL     *This,
IN  EFI_HANDLE                      Controller,
IN  UINTN                           NumberOfChildren,
IN  EFI_HANDLE                      *ChildHandleBuffer
);


+//
+// EFI Component Name Functions
+//
+/**

Retrieves a Unicode string that is the user readable name of the driver.

This function retrieves the user readable name of a driver in the form of a
Unicode string. If the driver specified by This has a user readable name in
the language specified by Language, then a pointer to the driver name is
returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
by This does not support the language specified by Language,
then EFI_UNSUPPORTED is returned.

@param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
                           EFI_COMPONENT_NAME_PROTOCOL instance.



@param  Language[in]          A pointer to a Null-terminated ASCII string
                           array indicating the language. This is the


                           language of the driver name that the caller is


                           requesting, and it must match one of the


                           languages specified in SupportedLanguages. The


                           number of languages supported by a driver is up


                           to the driver writer. Language is specified


                           in RFC 4646 or ISO 639-2 language code format.



@param  DriverName[out]       A pointer to the Unicode string to return.
                           This Unicode string is the name of the


                           driver specified by This in the language


                           specified by Language.



@retval EFI_SUCCESS           The Unicode string for the Driver specified by
                           This and the language specified by Language was


                           returned in DriverName.



@retval EFI_INVALID_PARAMETER Language is NULL.

@retval EFI_INVALID_PARAMETER DriverName is NULL.

@retval EFI_UNSUPPORTED       The driver specified by This does not support
                           the language specified by Language.




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcComponentNameGetDriverName (

IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
IN  CHAR8                           *Language,
OUT CHAR16                          **DriverName
);


+/**

Retrieves a Unicode string that is the user readable name of the controller
that is being managed by a driver.

This function retrieves the user readable name of the controller specified by
ControllerHandle and ChildHandle in the form of a Unicode string. If the
driver specified by This has a user readable name in the language specified by
Language, then a pointer to the controller name is returned in ControllerName,
and EFI_SUCCESS is returned.  If the driver specified by This is not currently
managing the controller specified by ControllerHandle and ChildHandle,
then EFI_UNSUPPORTED is returned.  If the driver specified by This does not
support the language specified by Language, then EFI_UNSUPPORTED is returned.

@param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
                           EFI_COMPONENT_NAME_PROTOCOL instance.



@param  ControllerHandle[in]  The handle of a controller that the driver
                           specified by This is managing.  This handle


                           specifies the controller whose name is to be


                           returned.



@param  ChildHandle[in]       The handle of the child controller to retrieve
                           the name of.  This is an optional parameter that


                           may be NULL.  It will be NULL for device


                           drivers.  It will also be NULL for a bus drivers


                           that wish to retrieve the name of the bus


                           controller.  It will not be NULL for a bus


                           driver that wishes to retrieve the name of a


                           child controller.



@param  Language[in]          A pointer to a Null-terminated ASCII string
                           array indicating the language.  This is the


                           language of the driver name that the caller is


                           requesting, and it must match one of the


                           languages specified in SupportedLanguages. The


                           number of languages supported by a driver is up


                           to the driver writer. Language is specified in


                           RFC 4646 or ISO 639-2 language code format.



@param  ControllerName[out]   A pointer to the Unicode string to return.
                           This Unicode string is the name of the


                           controller specified by ControllerHandle and


                           ChildHandle in the language specified by


                           Language from the point of view of the driver


                           specified by This.



@retval EFI_SUCCESS           The Unicode string for the user readable name in
                           the language specified by Language for the


                           driver specified by This was returned in


                           DriverName.



@retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.

@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
                           EFI_HANDLE.



@retval EFI_INVALID_PARAMETER Language is NULL.

@retval EFI_INVALID_PARAMETER ControllerName is NULL.

@retval EFI_UNSUPPORTED       The driver specified by This is not currently
                           managing the controller specified by


                           ControllerHandle and ChildHandle.



@retval EFI_UNSUPPORTED       The driver specified by This does not support
                           the language specified by Language.




+**/
+EFI_STATUS
+EFIAPI
+SdMmcPciHcComponentNameGetControllerName (

IN  EFI_COMPONENT_NAME_PROTOCOL     *This,
IN  EFI_HANDLE                      ControllerHandle,
IN  EFI_HANDLE                      ChildHandle, OPTIONAL
IN  CHAR8                           *Language,
OUT CHAR16                          **ControllerName
);


+/**

Create a new TRB for the SD/MMC cmd request.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Packet         A pointer to the SD command data structure.
@param[in] Event          If Event is NULL, blocking I/O is performed. If Event is
                       not NULL, then nonblocking I/O is performed, and Event


                       will be signaled when the Packet completes.



@return Created Trb or NULL.


+**/
+SD_MMC_HC_TRB *
+SdMmcCreateTrb (

IN SD_MMC_HC_PRIVATE_DATA              *Private,
IN UINT8                               Slot,
IN EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet,
IN EFI_EVENT                           Event
);


+/**

Free the resource used by the TRB.

@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.


+**/
+VOID
+SdMmcFreeTrb (

IN SD_MMC_HC_TRB           *Trb
);


+/**

Check if the env is ready for execute specified TRB.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The env is ready for TRB execution.
@retval EFI_NOT_READY     The env is not ready for TRB execution.
@retval Others            Some erros happen.


+**/
+EFI_STATUS
+SdMmcCheckTrbEnv (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
);


+/**

Wait for the env to be ready for execute specified TRB.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The env is ready for TRB execution.
@retval EFI_TIMEOUT       The env is not ready for TRB execution in time.
@retval Others            Some erros happen.


+**/
+EFI_STATUS
+SdMmcWaitTrbEnv (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
);


+/**

Execute the specified TRB.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The TRB is sent to host controller successfully.
@retval Others            Some erros happen when sending this request to the host controller.


+**/
+EFI_STATUS
+SdMmcExecTrb (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
);


+/**

Check the TRB execution result.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The TRB is executed successfully.
@retval EFI_NOT_READY     The TRB is not completed for execution.
@retval Others            Some erros happen when executing this request.


+**/
+EFI_STATUS
+SdMmcCheckTrbResult (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
);


+/**

Wait for the TRB execution result.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The TRB is executed successfully.
@retval Others            Some erros happen when executing this request.


+**/
+EFI_STATUS
+SdMmcWaitTrbResult (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
);


+/**

Execute EMMC device identification procedure.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       There is a EMMC card.
@retval Others            There is not a EMMC card.


+**/
+EFI_STATUS
+EmmcIdentification (

IN SD_MMC_HC_PRIVATE_DATA             *Private,
IN UINT8                              Slot
);


+/**

Execute EMMC device identification procedure.

Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       There is a EMMC card.
@retval Others            There is not a EMMC card.


+**/
+EFI_STATUS
+SdCardIdentification (

IN SD_MMC_HC_PRIVATE_DATA             *Private,
IN UINT8                              Slot
);


+#endif
diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.inf b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.inf
new file mode 100644
index 0000000..e26e6a0
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.inf
@@ -0,0 +1,72 @@
+## @file
+#  SdMmcPciHcDxe driver is used to manage those host controllers which comply with SD
+#  Host Controller Simplified Specifiction version 3.0.
+#
+#  It will produce EFI_SD_MMC_PASS_THRU_PROTOCOL to allow sending SD/MMC/eMMC cmds
+#  to specified devices from upper layer.
+#
+#  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+#
+#  This program and the accompanying materials
+#  are licensed and made available under the terms and conditions of the BSD License
+#  which accompanies this distribution. The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+##



+[Defines]

INF_VERSION                    = 0x00010005
BASE_NAME                      = SdMmcPciHcDxe
MODULE_UNI_FILE                = SdMmcPciHcDxe.uni
FILE_GUID                      = 8E325979-3FE1-4927-AAE2-8F5C4BD2AF0D
MODULE_TYPE                    = UEFI_DRIVER
VERSION_STRING                 = 1.0
ENTRY_POINT                    = InitializeSdMmcPciHcDxe


+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+#  DRIVER_BINDING                =  gSdMmcPciHcDxeDriverBinding
+#  COMPONENT_NAME                =  gSdMmcPciHcDxeComponentName
+#  COMPONENT_NAME2               =  gSdMmcPciHcDxeComponentName2
+#
+#



+[Sources]

SdMmcPciHcDxe.h
SdMmcPciHcDxe.c
EmmcDevice.c
SdDevice.c
SdMmcPciHci.h
SdMmcPciHci.c
ComponentName.c


+[Packages]

MdePkg/MdePkg.dec


+[LibraryClasses]

DevicePathLib
UefiBootServicesTableLib
UefiRuntimeServicesTableLib
MemoryAllocationLib
BaseMemoryLib
UefiLib
BaseLib
UefiDriverEntryPoint
DebugLib


+[Protocols]

gEfiDevicePathProtocolGuid                    ## TO_START
gEfiPciIoProtocolGuid                         ## TO_START
gEfiSdMmcPassThruProtocolGuid                 ## BY_START


+# [Event]
+# EVENT_TYPE_PERIODIC_TIMER ## SOMETIMES_CONSUMES



+[UserExtensions.TianoCore."ExtraFiles"]

SdMmcPciHcDxeExtra.uni

diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.uni b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.uni
new file mode 100644
index 0000000..57f9fa7
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxe.uni
@@ -0,0 +1,23 @@
+// /** @file
+// SdMmcPciHcDxe driver is used to manage those host controllers which comply with SD
+// Host Controller Simplified Specifiction version 3.0.
+//
+// It will produce EFI_SD_MMC_PASS_THRU_PROTOCOL to allow sending SD/MMC/eMMC cmds
+// to specified devices from upper layer.
+//
+// Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+// **/




+#string STR_MODULE_ABSTRACT             #language en-US "SD/MMC Pci Host Controller driver to manage SD/MMC host controllers"



+#string STR_MODULE_DESCRIPTION          #language en-US "This driver follows the UEFI driver model and produces SD/MMC Pass Thru protocol for upper layer bus driver."



diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxeExtra.uni b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxeExtra.uni
new file mode 100644
index 0000000..c7aedb4
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHcDxeExtra.uni
@@ -0,0 +1,19 @@
+// /** @file
+// SdMmcPciHcDxe Localized Strings and Content
+//
+// Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+// **/



+#string STR_PROPERTIES_MODULE_NAME
+#language en-US
+"SD/MMC Pci Host Controller Driver"




diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHci.c b/Drivers/SdMmc/Xenon/MvSdMmcPciHci.c
new file mode 100644
index 0000000..ccbf355
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHci.c
@@ -0,0 +1,1923 @@
+/** @file

This driver is used to manage SD/MMC PCI host controllers which are compliance
with SD Host Controller Simplified Specification version 3.00.

It would expose EFI_SD_MMC_PASS_THRU_PROTOCOL for upper layer use.

Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.


+**/



+#include "SdMmcPciHcDxe.h"



+/**

Dump the content of SD/MMC host controller's Capability Register.

@param[in]  Slot            The slot number of the SD card to send the command to.
@param[in]  Capability      The buffer to store the capability data.


+**/
+VOID
+DumpCapabilityReg (

IN UINT8                Slot,
IN SD_MMC_HC_SLOT_CAP   *Capability
)

+{

//
// Dump Capability Data
//
DEBUG ((DEBUG_INFO, " == Slot [%d] Capability is 0x%x ==\n", Slot, Capability));
DEBUG ((DEBUG_INFO, "   Timeout Clk Freq  %d%a\n", Capability->TimeoutFreq, (Capability->TimeoutUnit) ? "MHz" : "KHz"));
DEBUG ((DEBUG_INFO, "   Base Clk Freq     %dMHz\n", Capability->BaseClkFreq));
DEBUG ((DEBUG_INFO, "   Max Blk Len       %dbytes\n", 512 * (1 << Capability->MaxBlkLen)));
DEBUG ((DEBUG_INFO, "   8-bit Support     %a\n", Capability->BusWidth8 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   ADMA2 Support     %a\n", Capability->Adma2 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   HighSpeed Support %a\n", Capability->HighSpeed ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   SDMA Support      %a\n", Capability->Sdma ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Suspend/Resume    %a\n", Capability->SuspRes ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Voltage 3.3       %a\n", Capability->Voltage33 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Voltage 3.0       %a\n", Capability->Voltage30 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Voltage 1.8       %a\n", Capability->Voltage18 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   64-bit Sys Bus    %a\n", Capability->SysBus64 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Async Interrupt   %a\n", Capability->AsyncInt ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   SlotType          "));
if (Capability->SlotType == 0x00) {
DEBUG ((DEBUG_INFO, "%a\n", "Removable Slot"));
} else if (Capability->SlotType == 0x01) {
DEBUG ((DEBUG_INFO, "%a\n", "Embedded Slot"));
} else if (Capability->SlotType == 0x02) {
DEBUG ((DEBUG_INFO, "%a\n", "Shared Bus Slot"));
} else {
DEBUG ((DEBUG_INFO, "%a\n", "Reserved"));
}
DEBUG ((DEBUG_INFO, "   SDR50  Support    %a\n", Capability->Sdr50 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   SDR104 Support    %a\n", Capability->Sdr104 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   DDR50  Support    %a\n", Capability->Ddr50 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Driver Type A     %a\n", Capability->DriverTypeA ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Driver Type C     %a\n", Capability->DriverTypeC ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Driver Type D     %a\n", Capability->DriverTypeD ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Driver Type 4     %a\n", Capability->DriverType4 ? "TRUE" : "FALSE"));
if (Capability->TimerCount == 0) {
DEBUG ((DEBUG_INFO, "   Retuning TimerCnt Disabled\n", 2 * (Capability->TimerCount - 1)));
} else {
DEBUG ((DEBUG_INFO, "   Retuning TimerCnt %dseconds\n", 2 * (Capability->TimerCount - 1)));
}
DEBUG ((DEBUG_INFO, "   SDR50 Tuning      %a\n", Capability->TuningSDR50 ? "TRUE" : "FALSE"));
DEBUG ((DEBUG_INFO, "   Retuning Mode     Mode %d\n", Capability->RetuningMod + 1));
DEBUG ((DEBUG_INFO, "   Clock Multiplier  M = %d\n", Capability->ClkMultiplier + 1));
DEBUG ((DEBUG_INFO, "   HS 400            %a\n", Capability->Hs400 ? "TRUE" : "FALSE"));
return;

+}



+/**

Read SlotInfo register from SD/MMC host controller pci config space.

@param[in]  PciIo        The PCI IO protocol instance.
@param[out] FirstBar     The buffer to store the first BAR value.
@param[out] SlotNum      The buffer to store the supported slot number.

@retval EFI_SUCCESS      The operation succeeds.
@retval Others           The operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcGetSlotInfo (

IN     EFI_PCI_IO_PROTOCOL   *PciIo,
OUT UINT8                 *FirstBar,


OUT UINT8                 *SlotNum


)

+{

EFI_STATUS                   Status;
SD_MMC_HC_SLOT_INFO          SlotInfo;

Status = PciIo->Pci.Read (
                   PciIo,


                   EfiPciIoWidthUint8,


                   SD_MMC_HC_SLOT_OFFSET,


                   sizeof (SlotInfo),


                   &SlotInfo


                   );


if (EFI_ERROR (Status)) {
return Status;
}

*FirstBar = SlotInfo.FirstBar;
*SlotNum  = SlotInfo.SlotNum + 1;
ASSERT ((*FirstBar + *SlotNum) < SD_MMC_HC_MAX_SLOT);
return EFI_SUCCESS;

+}



+/**

Read/Write specified SD/MMC host controller mmio register.

@param[in]      PciIo        The PCI IO protocol instance.
@param[in]      BarIndex     The BAR index of the standard PCI Configuration
                          header to use as the base address for the memory


                          operation to perform.


@param[in]      Offset       The offset within the selected BAR to start the
                          memory operation.


@param[in]      Read         A boolean to indicate it's read or write operation.
@param[in]      Count        The width of the mmio register in bytes.
                          Must be 1, 2 , 4 or 8 bytes.


@param[in, out] Data         For read operations, the destination buffer to store
                          the results. For write operations, the source buffer


                          to write data from. The caller is responsible for


                          having ownership of the data buffer and ensuring its


                          size not less than Count bytes.



@retval EFI_INVALID_PARAMETER The PciIo or Data is NULL or the Count is not valid.
@retval EFI_SUCCESS           The read/write operation succeeds.
@retval Others                The read/write operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcRwMmio (

IN     EFI_PCI_IO_PROTOCOL   *PciIo,
IN     UINT8                 BarIndex,
IN     UINT32                Offset,
IN     BOOLEAN               Read,
IN     UINT8                 Count,
IN OUT VOID                  *Data
)

+{

EFI_STATUS                   Status;

if ((PciIo == NULL) || (Data == NULL))  {
return EFI_INVALID_PARAMETER;
}

if ((Count != 1) && (Count != 2) && (Count != 4) && (Count != 8)) {
return EFI_INVALID_PARAMETER;
}

if (Read) {
Status = PciIo->Mem.Read (
                     PciIo,


                     EfiPciIoWidthUint8,


                     BarIndex,


                     (UINT64) Offset,


                     Count,


                     Data


                     );


} else {
Status = PciIo->Mem.Write (
                     PciIo,


                     EfiPciIoWidthUint8,


                     BarIndex,


                     (UINT64) Offset,


                     Count,


                     Data


                     );


}

return Status;

+}



+/**

Do OR operation with the value of the specified SD/MMC host controller mmio register.

@param[in] PciIo             The PCI IO protocol instance.
@param[in] BarIndex          The BAR index of the standard PCI Configuration
                          header to use as the base address for the memory


                          operation to perform.


@param[in] Offset            The offset within the selected BAR to start the
                          memory operation.


@param[in] Count             The width of the mmio register in bytes.
                          Must be 1, 2 , 4 or 8 bytes.


@param[in] OrData            The pointer to the data used to do OR operation.
                          The caller is responsible for having ownership of


                          the data buffer and ensuring its size not less than


                          Count bytes.



@retval EFI_INVALID_PARAMETER The PciIo or OrData is NULL or the Count is not valid.
@retval EFI_SUCCESS           The OR operation succeeds.
@retval Others                The OR operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcOrMmio (

IN  EFI_PCI_IO_PROTOCOL      *PciIo,
IN  UINT8                    BarIndex,
IN  UINT32                   Offset,
IN  UINT8                    Count,
IN  VOID                     *OrData
)

+{

EFI_STATUS                   Status;
UINT64                       Data;
UINT64                       Or;

Status = SdMmcHcRwMmio (PciIo, BarIndex, Offset, TRUE, Count, &Data);
if (EFI_ERROR (Status)) {
return Status;
}

if (Count == 1) {
Or = *(UINT8*) OrData;
} else if (Count == 2) {
Or = *(UINT16*) OrData;
} else if (Count == 4) {
Or = *(UINT32*) OrData;
} else if (Count == 8) {
Or = *(UINT64*) OrData;
} else {
return EFI_INVALID_PARAMETER;
}

Data  |= Or;
Status = SdMmcHcRwMmio (PciIo, BarIndex, Offset, FALSE, Count, &Data);

return Status;

+}



+/**

Do AND operation with the value of the specified SD/MMC host controller mmio register.

@param[in] PciIo             The PCI IO protocol instance.
@param[in] BarIndex          The BAR index of the standard PCI Configuration
                          header to use as the base address for the memory


                          operation to perform.


@param[in] Offset            The offset within the selected BAR to start the
                          memory operation.


@param[in] Count             The width of the mmio register in bytes.
                          Must be 1, 2 , 4 or 8 bytes.


@param[in] AndData           The pointer to the data used to do AND operation.
                          The caller is responsible for having ownership of


                          the data buffer and ensuring its size not less than


                          Count bytes.



@retval EFI_INVALID_PARAMETER The PciIo or AndData is NULL or the Count is not valid.
@retval EFI_SUCCESS           The AND operation succeeds.
@retval Others                The AND operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcAndMmio (

IN  EFI_PCI_IO_PROTOCOL      *PciIo,
IN  UINT8                    BarIndex,
IN  UINT32                   Offset,
IN  UINT8                    Count,
IN  VOID                     *AndData
)

+{

EFI_STATUS                   Status;
UINT64                       Data;
UINT64                       And;

Status = SdMmcHcRwMmio (PciIo, BarIndex, Offset, TRUE, Count, &Data);
if (EFI_ERROR (Status)) {
return Status;
}

if (Count == 1) {
And = *(UINT8*) AndData;
} else if (Count == 2) {
And = *(UINT16*) AndData;
} else if (Count == 4) {
And = *(UINT32*) AndData;
} else if (Count == 8) {
And = *(UINT64*) AndData;
} else {
return EFI_INVALID_PARAMETER;
}

Data  &= And;
Status = SdMmcHcRwMmio (PciIo, BarIndex, Offset, FALSE, Count, &Data);

return Status;

+}



+/**

Wait for the value of the specified MMIO register set to the test value.

@param[in]  PciIo         The PCI IO protocol instance.
@param[in]  BarIndex      The BAR index of the standard PCI Configuration
                       header to use as the base address for the memory


                       operation to perform.


@param[in]  Offset        The offset within the selected BAR to start the
                       memory operation.


@param[in]  Count         The width of the mmio register in bytes.
                       Must be 1, 2, 4 or 8 bytes.


@param[in]  MaskValue     The mask value of memory.
@param[in]  TestValue     The test value of memory.

@retval EFI_NOT_READY     The MMIO register hasn't set to the expected value.
@retval EFI_SUCCESS       The MMIO register has expected value.
@retval Others            The MMIO operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcCheckMmioSet (

IN  EFI_PCI_IO_PROTOCOL       *PciIo,
IN  UINT8                     BarIndex,
IN  UINT32                    Offset,
IN  UINT8                     Count,
IN  UINT64                    MaskValue,
IN  UINT64                    TestValue
)

+{

EFI_STATUS            Status;
UINT64                Value;

//
// Access PCI MMIO space to see if the value is the tested one.
//
Value  = 0;
Status = SdMmcHcRwMmio (PciIo, BarIndex, Offset, TRUE, Count, &Value);
if (EFI_ERROR (Status)) {
return Status;
}

Value &= MaskValue;

if (Value == TestValue) {
return EFI_SUCCESS;
}

return EFI_NOT_READY;

+}



+/**

Wait for the value of the specified MMIO register set to the test value.

@param[in]  PciIo         The PCI IO protocol instance.
@param[in]  BarIndex      The BAR index of the standard PCI Configuration
                       header to use as the base address for the memory


                       operation to perform.


@param[in]  Offset        The offset within the selected BAR to start the
                       memory operation.


@param[in]  Count         The width of the mmio register in bytes.
                       Must be 1, 2, 4 or 8 bytes.


@param[in]  MaskValue     The mask value of memory.
@param[in]  TestValue     The test value of memory.
@param[in]  Timeout       The time out value for wait memory set, uses 1
                       microsecond as a unit.



@retval EFI_TIMEOUT       The MMIO register hasn't expected value in timeout
                       range.


@retval EFI_SUCCESS       The MMIO register has expected value.
@retval Others            The MMIO operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcWaitMmioSet (

IN  EFI_PCI_IO_PROTOCOL       *PciIo,
IN  UINT8                     BarIndex,
IN  UINT32                    Offset,
IN  UINT8                     Count,
IN  UINT64                    MaskValue,
IN  UINT64                    TestValue,
IN  UINT64                    Timeout
)

+{

EFI_STATUS            Status;
BOOLEAN               InfiniteWait;

if (Timeout == 0) {
InfiniteWait = TRUE;
} else {
InfiniteWait = FALSE;
}

while (InfiniteWait || (Timeout > 0)) {
Status = SdMmcHcCheckMmioSet (
          PciIo,


          BarIndex,


          Offset,


          Count,


          MaskValue,


          TestValue


          );


if (Status != EFI_NOT_READY) {
 return Status;


}

//
// Stall for 1 microsecond.
//
gBS->Stall (1);

Timeout--;
}

return EFI_TIMEOUT;

+}



+/**

Software reset the specified SD/MMC host controller and enable all interrupts.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The software reset executes successfully.
@retval Others            The software reset fails.


+**/
+EFI_STATUS
+SdMmcHcReset (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
)

+{

EFI_STATUS                Status;
UINT8                     SwReset;

SwReset = 0xFF;
Status  = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_SW_RST, FALSE, sizeof (SwReset), &SwReset);

if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SdMmcHcReset: write full 1 fails: %r\n", Status));
return Status;
}

Status = SdMmcHcWaitMmioSet (
        PciIo,


        Slot,


        SD_MMC_HC_SW_RST,


        sizeof (SwReset),


        0xFF,


        0x00,


        SD_MMC_HC_GENERIC_TIMEOUT


        );


if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "SdMmcHcReset: reset done with %r\n", Status));
return Status;
}
//
// Enable all interrupt after reset all.
//
Status = SdMmcHcEnableInterrupt (PciIo, Slot);

return Status;

+}



+/**

Set all interrupt status bits in Normal and Error Interrupt Status Enable
register.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation executes successfully.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdMmcHcEnableInterrupt (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
)

+{

EFI_STATUS                Status;
UINT16                    IntStatus;

//
// Enable all bits in Error Interrupt Status Enable Register
//
IntStatus = 0xFFFF;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_ERR_INT_STS_EN, FALSE, sizeof (IntStatus), &IntStatus);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Enable all bits in Normal Interrupt Status Enable Register
//
IntStatus = 0xFFFF;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_NOR_INT_STS_EN, FALSE, sizeof (IntStatus), &IntStatus);

return Status;

+}



+/**

Get the capability data from the specified slot.

@param[in]  PciIo           The PCI IO protocol instance.
@param[in]  Slot            The slot number of the SD card to send the command to.
@param[out] Capability      The buffer to store the capability data.

@retval EFI_SUCCESS         The operation executes successfully.
@retval Others              The operation fails.


+**/
+EFI_STATUS
+SdMmcHcGetCapability (

IN     EFI_PCI_IO_PROTOCOL  *PciIo,
IN     UINT8                Slot,
OUT SD_MMC_HC_SLOT_CAP   *Capability


)

+{

EFI_STATUS                Status;
UINT64                    Cap;

Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_CAP, TRUE, sizeof (Cap), &Cap);
if (EFI_ERROR (Status)) {
return Status;
}

CopyMem (Capability, &Cap, sizeof (Cap));

return EFI_SUCCESS;

+}



+/**

Get the maximum current capability data from the specified slot.

@param[in]  PciIo           The PCI IO protocol instance.
@param[in]  Slot            The slot number of the SD card to send the command to.
@param[out] MaxCurrent      The buffer to store the maximum current capability data.

@retval EFI_SUCCESS         The operation executes successfully.
@retval Others              The operation fails.


+**/
+EFI_STATUS
+SdMmcHcGetMaxCurrent (

IN     EFI_PCI_IO_PROTOCOL  *PciIo,
IN     UINT8                Slot,
OUT UINT64               *MaxCurrent


)

+{

EFI_STATUS          Status;

Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_MAX_CURRENT_CAP, TRUE, sizeof (UINT64), MaxCurrent);

return Status;

+}



+/**

Detect whether there is a SD/MMC card attached at the specified SD/MMC host controller
slot.

Refer to SD Host Controller Simplified spec 3.0 Section 3.1 for details.

@param[in]  PciIo         The PCI IO protocol instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[out] MediaPresent  The pointer to the media present boolean value.

@retval EFI_SUCCESS       There is no media change happened.
@retval EFI_MEDIA_CHANGED There is media change happened.
@retval Others            The detection fails.


+**/
+EFI_STATUS
+SdMmcHcCardDetect (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
OUT BOOLEAN            *MediaPresent


)

+{

EFI_STATUS                Status;
UINT16                    Data;
UINT32                    PresentState;

//
// Check Present State Register to see if there is a card presented.
//
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_PRESENT_STATE, TRUE, sizeof (PresentState), &PresentState);
if (EFI_ERROR (Status)) {
return Status;
}

if ((PresentState & BIT16) != 0) {
*MediaPresent = TRUE;
} else {
*MediaPresent = FALSE;
}

//
// Check Normal Interrupt Status Register
//
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_NOR_INT_STS, TRUE, sizeof (Data), &Data);
if (EFI_ERROR (Status)) {
return Status;
}

if ((Data & (BIT6 | BIT7)) != 0) {
//
// Clear BIT6 and BIT7 by writing 1 to these two bits if set.
//
Data  &= BIT6 | BIT7;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_NOR_INT_STS, FALSE, sizeof (Data), &Data);
if (EFI_ERROR (Status)) {
 return Status;


}

return EFI_MEDIA_CHANGED;
}

return EFI_SUCCESS;

+}



+/**

Stop SD/MMC card clock.

Refer to SD Host Controller Simplified spec 3.0 Section 3.2.2 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       Succeed to stop SD/MMC clock.
@retval Others            Fail to stop SD/MMC clock.


+**/
+EFI_STATUS
+SdMmcHcStopClock (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
)

+{

EFI_STATUS                Status;
UINT32                    PresentState;
UINT16                    ClockCtrl;

//
// Ensure no SD transactions are occurring on the SD Bus by
// waiting for Command Inhibit (DAT) and Command Inhibit (CMD)
// in the Present State register to be 0.
//
Status = SdMmcHcWaitMmioSet (
        PciIo,


        Slot,


        SD_MMC_HC_PRESENT_STATE,


        sizeof (PresentState),


        BIT0 | BIT1,


        0,


        SD_MMC_HC_GENERIC_TIMEOUT


        );


if (EFI_ERROR (Status)) {
return Status;
}

//
// Set SD Clock Enable in the Clock Control register to 0
//
ClockCtrl = (UINT16)~BIT2;
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_CLOCK_CTRL, sizeof (ClockCtrl), &ClockCtrl);

return Status;

+}



+/**

SD/MMC card clock supply.

Refer to SD Host Controller Simplified spec 3.0 Section 3.2.1 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] ClockFreq      The max clock frequency to be set. The unit is KHz.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The clock is supplied successfully.
@retval Others            The clock isn't supplied successfully.


+**/
+EFI_STATUS
+SdMmcHcClockSupply (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN UINT64                 ClockFreq,
IN SD_MMC_HC_SLOT_CAP     Capability
)

+{

EFI_STATUS                Status;
UINT32                    BaseClkFreq;
UINT32                    SettingFreq;
UINT32                    Divisor;
UINT32                    Remainder;
UINT16                    ControllerVer;
UINT16                    ClockCtrl;

//
// Calculate a divisor for SD clock frequency
//
ASSERT (Capability.BaseClkFreq != 0);

BaseClkFreq = Capability.BaseClkFreq;
if (ClockFreq == 0) {
return EFI_INVALID_PARAMETER;
}

if (ClockFreq > (BaseClkFreq * 1000)) {
ClockFreq = BaseClkFreq * 1000;
}

//
// Calculate the divisor of base frequency.
//
Divisor     = 0;
SettingFreq = BaseClkFreq * 1000;
while (ClockFreq < SettingFreq) {
Divisor++;

SettingFreq = (BaseClkFreq * 1000) / (2 * Divisor);
Remainder   = (BaseClkFreq * 1000) % (2 * Divisor);
if ((ClockFreq == SettingFreq) && (Remainder == 0)) {
 break;


}
if ((ClockFreq == SettingFreq) && (Remainder != 0)) {
 SettingFreq ++;


}
}

DEBUG ((DEBUG_INFO, "BaseClkFreq %dMHz Divisor %d ClockFreq %dKhz\n", BaseClkFreq, Divisor, ClockFreq));

Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_CTRL_VER, TRUE, sizeof (ControllerVer), &ControllerVer);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set SDCLK Frequency Select and Internal Clock Enable fields in Clock Control register.
//
if ((ControllerVer & 0xFF) == 2) {
ASSERT (Divisor <= 0x3FF);
ClockCtrl = ((Divisor & 0xFF) << 8) | ((Divisor & 0x300) >> 2);
} else if (((ControllerVer & 0xFF) == 0) || ((ControllerVer & 0xFF) == 1)) {
//
// Only the most significant bit can be used as divisor.
//
if (((Divisor - 1) & Divisor) != 0) {
 Divisor = 1 << (HighBitSet32 (Divisor) + 1);


}
ASSERT (Divisor <= 0x80);
ClockCtrl = (Divisor & 0xFF) << 8;
} else {
DEBUG ((DEBUG_ERROR, "Unknown SD Host Controller Spec version [0x%x]!!!\n", ControllerVer));
return EFI_UNSUPPORTED;
}

//
// Stop bus clock at first
//
Status = SdMmcHcStopClock (PciIo, Slot);
if (EFI_ERROR (Status)) {
return Status;
}

//
// Supply clock frequency with specified divisor
//
ClockCtrl |= BIT0;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_CLOCK_CTRL, FALSE, sizeof (ClockCtrl), &ClockCtrl);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Set SDCLK Frequency Select and Internal Clock Enable fields fails\n"));
return Status;
}

//
// Wait Internal Clock Stable in the Clock Control register to be 1
//
Status = SdMmcHcWaitMmioSet (
        PciIo,


        Slot,


        SD_MMC_HC_CLOCK_CTRL,


        sizeof (ClockCtrl),


        BIT1,


        BIT1,


        SD_MMC_HC_GENERIC_TIMEOUT


        );


if (EFI_ERROR (Status)) {
return Status;
}

//
// Set SD Clock Enable in the Clock Control register to 1
//
ClockCtrl = BIT2;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_CLOCK_CTRL, sizeof (ClockCtrl), &ClockCtrl);

return Status;

+}



+/**

SD/MMC bus power control.

Refer to SD Host Controller Simplified spec 3.0 Section 3.3 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] PowerCtrl      The value setting to the power control register.

@retval TRUE              There is a SD/MMC card attached.
@retval FALSE             There is no a SD/MMC card attached.


+**/
+EFI_STATUS
+SdMmcHcPowerControl (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN UINT8                  PowerCtrl
)

+{

EFI_STATUS                Status;

//
// Clr SD Bus Power
//
PowerCtrl &= (UINT8)~BIT0;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_POWER_CTRL, FALSE, sizeof (PowerCtrl), &PowerCtrl);
if (EFI_ERROR (Status)) {
return Status;
}

//
// Set SD Bus Voltage Select and SD Bus Power fields in Power Control Register
//
PowerCtrl |= BIT0;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_POWER_CTRL, FALSE, sizeof (PowerCtrl), &PowerCtrl);

return Status;

+}



+/**

Set the SD/MMC bus width.

Refer to SD Host Controller Simplified spec 3.0 Section 3.4 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] BusWidth       The bus width used by the SD/MMC device, it must be 1, 4 or 8.

@retval EFI_SUCCESS       The bus width is set successfully.
@retval Others            The bus width isn't set successfully.


+**/
+EFI_STATUS
+SdMmcHcSetBusWidth (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN UINT16                 BusWidth
)

+{

EFI_STATUS                Status;
UINT8                     HostCtrl1;

if (BusWidth == 1) {
HostCtrl1 = (UINT8)~(BIT5 | BIT1);
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
} else if (BusWidth == 4) {
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, TRUE, sizeof (HostCtrl1), &HostCtrl1);
if (EFI_ERROR (Status)) {
 return Status;


}
HostCtrl1 |= BIT1;
HostCtrl1 &= (UINT8)~BIT5;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, FALSE, sizeof (HostCtrl1), &HostCtrl1);
} else if (BusWidth == 8) {
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, TRUE, sizeof (HostCtrl1), &HostCtrl1);
if (EFI_ERROR (Status)) {
 return Status;


}
HostCtrl1 &= (UINT8)~BIT1;
HostCtrl1 |= BIT5;
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, FALSE, sizeof (HostCtrl1), &HostCtrl1);
} else {
ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}

return Status;

+}



+/**

Supply SD/MMC card with lowest clock frequency at initialization.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The clock is supplied successfully.
@retval Others            The clock isn't supplied successfully.


+**/
+EFI_STATUS
+SdMmcHcInitClockFreq (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN SD_MMC_HC_SLOT_CAP     Capability
)

+{

EFI_STATUS                Status;
UINT32                    InitFreq;

//
// Calculate a divisor for SD clock frequency
//
if (Capability.BaseClkFreq == 0) {
//
// Don't support get Base Clock Frequency information via another method
//
return EFI_UNSUPPORTED;
}
//
// Supply 400KHz clock frequency at initialization phase.
//
InitFreq = 400;
Status = SdMmcHcClockSupply (PciIo, Slot, InitFreq, Capability);
return Status;

+}



+/**

Supply SD/MMC card with maximum voltage at initialization.

Refer to SD Host Controller Simplified spec 3.0 Section 3.3 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The voltage is supplied successfully.
@retval Others            The voltage isn't supplied successfully.


+**/
+EFI_STATUS
+SdMmcHcInitPowerVoltage (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN SD_MMC_HC_SLOT_CAP     Capability
)

+{

EFI_STATUS                Status;
UINT8                     MaxVoltage;
UINT8                     HostCtrl2;

//
// Calculate supported maximum voltage according to SD Bus Voltage Select
//
if (Capability.Voltage33 != 0) {
//
// Support 3.3V
//
MaxVoltage = 0x0E;
} else if (Capability.Voltage30 != 0) {
//
// Support 3.0V
//
MaxVoltage = 0x0C;
} else if (Capability.Voltage18 != 0) {
//
// Support 1.8V
//
MaxVoltage = 0x0A;
HostCtrl2  = BIT3;
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
gBS->Stall (5000);
if (EFI_ERROR (Status)) {
 return Status;


}
} else {
ASSERT (FALSE);
return EFI_DEVICE_ERROR;
}

//
// Set SD Bus Voltage Select and SD Bus Power fields in Power Control Register
//
Status = SdMmcHcPowerControl (PciIo, Slot, MaxVoltage);

return Status;

+}



+/**

Initialize the Timeout Control register with most conservative value at initialization.

Refer to SD Host Controller Simplified spec 3.0 Section 2.2.15 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The timeout control register is configured successfully.
@retval Others            The timeout control register isn't configured successfully.


+**/
+EFI_STATUS
+SdMmcHcInitTimeoutCtrl (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
)

+{

EFI_STATUS                Status;
UINT8                     Timeout;

Timeout = 0x0E;
Status  = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_TIMEOUT_CTRL, FALSE, sizeof (Timeout), &Timeout);

return Status;

+}



+/**

Initial SD/MMC host controller with lowest clock frequency, max power and max timeout value
at initialization.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The host controller is initialized successfully.
@retval Others            The host controller isn't initialized successfully.


+**/
+EFI_STATUS
+SdMmcHcInitHost (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN SD_MMC_HC_SLOT_CAP     Capability
)

+{

EFI_STATUS       Status;

Status = SdMmcHcInitClockFreq (PciIo, Slot, Capability);
if (EFI_ERROR (Status)) {
return Status;
}

Status = SdMmcHcInitPowerVoltage (PciIo, Slot, Capability);
if (EFI_ERROR (Status)) {
return Status;
}

Status = SdMmcHcInitTimeoutCtrl (PciIo, Slot);
return Status;

+}



+/**

Turn on/off LED.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] On             The boolean to turn on/off LED.

@retval EFI_SUCCESS       The LED is turned on/off successfully.
@retval Others            The LED isn't turned on/off successfully.


+**/
+EFI_STATUS
+SdMmcHcLedOnOff (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN BOOLEAN                On
)

+{

EFI_STATUS                Status;
UINT8                     HostCtrl1;

if (On) {
HostCtrl1 = BIT0;
Status    = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
} else {
HostCtrl1 = (UINT8)~BIT0;
Status    = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
}

return Status;

+}



+/**

Build ADMA descriptor table for transfer.

Refer to SD Host Controller Simplified spec 3.0 Section 1.13 for details.

@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The ADMA descriptor table is created successfully.
@retval Others            The ADMA descriptor table isn't created successfully.


+**/
+EFI_STATUS
+BuildAdmaDescTable (

IN SD_MMC_HC_TRB          *Trb
)

+{

EFI_PHYSICAL_ADDRESS      Data;
UINT64                    DataLen;
UINT64                    Entries;
UINT32                    Index;
UINT64                    Remaining;
UINT32                    Address;
UINTN                     TableSize;
EFI_PCI_IO_PROTOCOL       *PciIo;
EFI_STATUS                Status;
UINTN                     Bytes;

Data    = Trb->DataPhy;
DataLen = Trb->DataLen;
PciIo   = Trb->Private->PciIo;
//
// Only support 32bit ADMA Descriptor Table
//
if ((Data >= 0x100000000ul) || ((Data + DataLen) > 0x100000000ul)) {
return EFI_INVALID_PARAMETER;
}
//
// Address field shall be set on 32-bit boundary (Lower 2-bit is always set to 0)
// for 32-bit address descriptor table.
//
if ((Data & (BIT0 | BIT1)) != 0) {
DEBUG ((DEBUG_INFO, "The buffer [0x%x] to construct ADMA desc is not aligned to 4 bytes boundary!\n", Data));
}

Entries   = DivU64x32 ((DataLen + ADMA_MAX_DATA_PER_LINE - 1), ADMA_MAX_DATA_PER_LINE);
TableSize = (UINTN)MultU64x32 (Entries, sizeof (SD_MMC_HC_ADMA_DESC_LINE));
Trb->AdmaPages = (UINT32)EFI_SIZE_TO_PAGES (TableSize);
Status = PciIo->AllocateBuffer (
               PciIo,


               AllocateAnyPages,


               EfiBootServicesData,


               EFI_SIZE_TO_PAGES (TableSize),


               (VOID **)&Trb->AdmaDesc,


               0


               );


if (EFI_ERROR (Status)) {
return EFI_OUT_OF_RESOURCES;
}
ZeroMem (Trb->AdmaDesc, TableSize);
Bytes  = TableSize;
Status = PciIo->Map (
               PciIo,


               EfiPciIoOperationBusMasterCommonBuffer,


               Trb->AdmaDesc,


               &Bytes,


               &Trb->AdmaDescPhy,


               &Trb->AdmaMap


               );



if (EFI_ERROR (Status) || (Bytes != TableSize)) {
//
// Map error or unable to map the whole RFis buffer into a contiguous region.
//
PciIo->FreeBuffer (
        PciIo,


        EFI_SIZE_TO_PAGES (TableSize),


        Trb->AdmaDesc


        );


return EFI_OUT_OF_RESOURCES;
}

if ((UINT64)(UINTN)Trb->AdmaDescPhy > 0x100000000ul) {
//
// The ADMA doesn't support 64bit addressing.
//
PciIo->Unmap (
 PciIo,


 Trb->AdmaMap


);
PciIo->FreeBuffer (
 PciIo,


 EFI_SIZE_TO_PAGES (TableSize),


 Trb->AdmaDesc


);
return EFI_DEVICE_ERROR;
}

Remaining = DataLen;
Address   = (UINT32)Data;
for (Index = 0; Index < Entries; Index++) {
if (Remaining <= ADMA_MAX_DATA_PER_LINE) {
 Trb->AdmaDesc[Index].Valid = 1;


 Trb->AdmaDesc[Index].Act   = 2;


 Trb->AdmaDesc[Index].Length  = (UINT16)Remaining;


 Trb->AdmaDesc[Index].Address = Address;


 break;


} else {
 Trb->AdmaDesc[Index].Valid = 1;


 Trb->AdmaDesc[Index].Act   = 2;


 Trb->AdmaDesc[Index].Length  = 0;


 Trb->AdmaDesc[Index].Address = Address;


}

Remaining -= ADMA_MAX_DATA_PER_LINE;
Address   += ADMA_MAX_DATA_PER_LINE;
}

//
// Set the last descriptor line as end of descriptor table
//
Trb->AdmaDesc[Index].End = 1;
return EFI_SUCCESS;

+}



+/**

Create a new TRB for the SD/MMC cmd request.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Packet         A pointer to the SD command data structure.
@param[in] Event          If Event is NULL, blocking I/O is performed. If Event is
                       not NULL, then nonblocking I/O is performed, and Event


                       will be signaled when the Packet completes.



@return Created Trb or NULL.


+**/
+SD_MMC_HC_TRB *
+SdMmcCreateTrb (

IN SD_MMC_HC_PRIVATE_DATA              *Private,
IN UINT8                               Slot,
IN EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet,
IN EFI_EVENT                           Event
)

+{

SD_MMC_HC_TRB                 *Trb;
EFI_STATUS                    Status;
EFI_TPL                       OldTpl;
EFI_PCI_IO_PROTOCOL_OPERATION Flag;
EFI_PCI_IO_PROTOCOL           *PciIo;
UINTN                         MapLength;

Trb = AllocateZeroPool (sizeof (SD_MMC_HC_TRB));
if (Trb == NULL) {
return NULL;
}

Trb->Signature = SD_MMC_HC_TRB_SIG;
Trb->Slot      = Slot;
Trb->BlockSize = 0x200;
Trb->Packet    = Packet;
Trb->Event     = Event;
Trb->Started   = FALSE;
Trb->Timeout   = Packet->Timeout;
Trb->Private   = Private;

if ((Packet->InTransferLength != 0) && (Packet->InDataBuffer != NULL)) {
Trb->Data    = Packet->InDataBuffer;
Trb->DataLen = Packet->InTransferLength;
Trb->Read    = TRUE;
} else if ((Packet->OutTransferLength != 0) && (Packet->OutDataBuffer != NULL)) {
Trb->Data    = Packet->OutDataBuffer;
Trb->DataLen = Packet->OutTransferLength;
Trb->Read    = FALSE;
} else if ((Packet->InTransferLength == 0) && (Packet->OutTransferLength == 0)) {
Trb->Data    = NULL;
Trb->DataLen = 0;
} else {
goto Error;
}

if (Trb->DataLen < Trb->BlockSize) {
Trb->BlockSize = (UINT16)Trb->DataLen;
}

if (((Private->Slot[Trb->Slot].CardType == EmmcCardType) &&
  (Packet->SdMmcCmdBlk->CommandIndex == EMMC_SEND_TUNING_BLOCK)) ||


 ((Private->Slot[Trb->Slot].CardType == SdCardType) &&


  (Packet->SdMmcCmdBlk->CommandIndex == SD_SEND_TUNING_BLOCK))) {


Trb->Mode = SdMmcPioMode;
} else {
if (Trb->Read) {
 Flag = EfiPciIoOperationBusMasterWrite;


} else {
 Flag = EfiPciIoOperationBusMasterRead;


}

PciIo = Private->PciIo;
if (Trb->DataLen != 0) {
 MapLength = Trb->DataLen;


 Status = PciIo->Map (


                   PciIo,


                   Flag,


                   Trb->Data,


                   &MapLength,


                   &Trb->DataPhy,


                   &Trb->DataMap


                   );


 if (EFI_ERROR (Status) || (Trb->DataLen != MapLength)) {


   Status = EFI_BAD_BUFFER_SIZE;


   goto Error;


 }


}

if (Trb->DataLen == 0) {
 Trb->Mode = SdMmcNoData;


} else if (Private->Capability[Slot].Adma2 != 0) {
 Trb->Mode = SdMmcAdmaMode;


 Status = BuildAdmaDescTable (Trb);


 if (EFI_ERROR (Status)) {


   PciIo->Unmap (PciIo, Trb->DataMap);


   goto Error;


 }


} else if (Private->Capability[Slot].Sdma != 0) {
 Trb->Mode = SdMmcSdmaMode;


} else {
 Trb->Mode = SdMmcPioMode;


}
}

if (Event != NULL) {
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
InsertTailList (&Private->Queue, &Trb->TrbList);
gBS->RestoreTPL (OldTpl);
}

return Trb;


+Error:

SdMmcFreeTrb (Trb);
return NULL;

+}



+/**

Free the resource used by the TRB.

@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.


+**/
+VOID
+SdMmcFreeTrb (

IN SD_MMC_HC_TRB           *Trb
)

+{

EFI_PCI_IO_PROTOCOL        *PciIo;

PciIo = Trb->Private->PciIo;

if (Trb->AdmaMap != NULL) {
PciIo->Unmap (
 PciIo,


 Trb->AdmaMap


);
}
if (Trb->AdmaDesc != NULL) {
PciIo->FreeBuffer (
 PciIo,


 Trb->AdmaPages,


 Trb->AdmaDesc


);
}
if (Trb->DataMap != NULL) {
PciIo->Unmap (
 PciIo,


 Trb->DataMap


);
}
FreePool (Trb);
return;

+}



+/**

Check if the env is ready for execute specified TRB.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The env is ready for TRB execution.
@retval EFI_NOT_READY     The env is not ready for TRB execution.
@retval Others            Some erros happen.


+**/
+EFI_STATUS
+SdMmcCheckTrbEnv (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
)

+{

EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
EFI_PCI_IO_PROTOCOL                 *PciIo;
UINT32                              PresentState;

Packet = Trb->Packet;

if ((Packet->SdMmcCmdBlk->CommandType == SdMmcCommandTypeAdtc) ||
 (Packet->SdMmcCmdBlk->ResponseType == SdMmcResponseTypeR1b) ||


 (Packet->SdMmcCmdBlk->ResponseType == SdMmcResponseTypeR5b)) {


//
// Wait Command Inhibit (CMD) and Command Inhibit (DAT) in
// the Present State register to be 0
//
PresentState = BIT0 | BIT1;
} else {
//
// Wait Command Inhibit (CMD) in the Present State register
// to be 0
//
PresentState = BIT0;
}

PciIo  = Private->PciIo;
Status = SdMmcHcCheckMmioSet (
        PciIo,


        Trb->Slot,


        SD_MMC_HC_PRESENT_STATE,


        sizeof (PresentState),


        PresentState,


        0


        );



return Status;

+}



+/**

Wait for the env to be ready for execute specified TRB.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The env is ready for TRB execution.
@retval EFI_TIMEOUT       The env is not ready for TRB execution in time.
@retval Others            Some erros happen.


+**/
+EFI_STATUS
+SdMmcWaitTrbEnv (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
)

+{

EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
UINT64                              Timeout;
BOOLEAN                             InfiniteWait;

//
// Wait Command Complete Interrupt Status bit in Normal Interrupt Status Register
//
Packet  = Trb->Packet;
Timeout = Packet->Timeout;
if (Timeout == 0) {
InfiniteWait = TRUE;
} else {
InfiniteWait = FALSE;
}

while (InfiniteWait || (Timeout > 0)) {
//
// Check Trb execution result by reading Normal Interrupt Status register.
//
Status = SdMmcCheckTrbEnv (Private, Trb);
if (Status != EFI_NOT_READY) {
 return Status;


}
//
// Stall for 1 microsecond.
//
gBS->Stall (1);

Timeout--;
}

return EFI_TIMEOUT;

+}



+/**

Execute the specified TRB.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The TRB is sent to host controller successfully.
@retval Others            Some erros happen when sending this request to the host controller.


+**/
+EFI_STATUS
+SdMmcExecTrb (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
)

+{

EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
EFI_PCI_IO_PROTOCOL                 *PciIo;
UINT16                              Cmd;
UINT16                              IntStatus;
UINT32                              Argument;
UINT16                              BlkCount;
UINT16                              BlkSize;
UINT16                              TransMode;
UINT8                               HostCtrl1;
UINT32                              SdmaAddr;
UINT64                              AdmaAddr;

Packet = Trb->Packet;
PciIo  = Trb->Private->PciIo;
//
// Clear all bits in Error Interrupt Status Register
//
IntStatus = 0xFFFF;
Status    = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_ERR_INT_STS, FALSE, sizeof (IntStatus), &IntStatus);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Clear all bits in Normal Interrupt Status Register excepts for Card Removal & Card Insertion bits.
//
IntStatus = 0xFF3F;
Status    = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_NOR_INT_STS, FALSE, sizeof (IntStatus), &IntStatus);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Set Host Control 1 register DMA Select field
//
if (Trb->Mode == SdMmcAdmaMode) {
HostCtrl1 = BIT4;
Status = SdMmcHcOrMmio (PciIo, Trb->Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
if (EFI_ERROR (Status)) {
 return Status;


}
}

SdMmcHcLedOnOff (PciIo, Trb->Slot, TRUE);

if (Trb->Mode == SdMmcSdmaMode) {
if ((UINT64)(UINTN)Trb->DataPhy >= 0x100000000ul) {
 return EFI_INVALID_PARAMETER;


}

SdmaAddr = (UINT32)(UINTN)Trb->DataPhy;
Status   = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_SDMA_ADDR, FALSE, sizeof (SdmaAddr), &SdmaAddr);
if (EFI_ERROR (Status)) {
 return Status;


}
} else if (Trb->Mode == SdMmcAdmaMode) {
AdmaAddr = (UINT64)(UINTN)Trb->AdmaDescPhy;
Status   = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_ADMA_SYS_ADDR, FALSE, sizeof (AdmaAddr), &AdmaAddr);
if (EFI_ERROR (Status)) {
 return Status;


}
}

BlkSize = Trb->BlockSize;
if (Trb->Mode == SdMmcSdmaMode) {
//
// Set SDMA boundary to be 512K bytes.
//
BlkSize |= 0x7000;
}

Status = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_BLK_SIZE, FALSE, sizeof (BlkSize), &BlkSize);
if (EFI_ERROR (Status)) {
return Status;
}

BlkCount = 0;
if (Trb->Mode != SdMmcNoData) {
//
// Calcuate Block Count.
//
BlkCount = (UINT16)(Trb->DataLen / Trb->BlockSize);
}
Status   = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_BLK_COUNT, FALSE, sizeof (BlkCount), &BlkCount);
if (EFI_ERROR (Status)) {
return Status;
}

Argument = Packet->SdMmcCmdBlk->CommandArgument;
Status   = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_ARG1, FALSE, sizeof (Argument), &Argument);
if (EFI_ERROR (Status)) {
return Status;
}

TransMode = 0;
if (Trb->Mode != SdMmcNoData) {
if (Trb->Mode != SdMmcPioMode) {
 TransMode |= BIT0;


}
if (Trb->Read) {
 TransMode |= BIT4;


}
if (BlkCount > 1) {
 TransMode |= BIT5 | BIT1;


}
//
// Only SD memory card needs to use AUTO CMD12 feature.
//
if (Private->Slot[Trb->Slot].CardType == SdCardType) {
 if (BlkCount > 1) {


   TransMode |= BIT2;


 }


}
}

Status = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_TRANS_MOD, FALSE, sizeof (TransMode), &TransMode);
if (EFI_ERROR (Status)) {
return Status;
}

Cmd = (UINT16)LShiftU64(Packet->SdMmcCmdBlk->CommandIndex, 8);
if (Packet->SdMmcCmdBlk->CommandType == SdMmcCommandTypeAdtc) {
Cmd |= BIT5;
}
//
// Convert ResponseType to value
//
if (Packet->SdMmcCmdBlk->CommandType != SdMmcCommandTypeBc) {
switch (Packet->SdMmcCmdBlk->ResponseType) {
 case SdMmcResponseTypeR1:


 case SdMmcResponseTypeR5:


 case SdMmcResponseTypeR6:


 case SdMmcResponseTypeR7:


   Cmd |= (BIT1 | BIT3 | BIT4);


   break;


 case SdMmcResponseTypeR2:


   Cmd |= (BIT0 | BIT3);


  break;


 case SdMmcResponseTypeR3:


 case SdMmcResponseTypeR4:


   Cmd |= BIT1;


   break;


 case SdMmcResponseTypeR1b:


 case SdMmcResponseTypeR5b:


   Cmd |= (BIT0 | BIT1 | BIT3 | BIT4);


   break;


 default:


   ASSERT (FALSE);


   break;


}
}
//
// Execute cmd
//
Status = SdMmcHcRwMmio (PciIo, Trb->Slot, SD_MMC_HC_COMMAND, FALSE, sizeof (Cmd), &Cmd);
return Status;

+}



+/**

Check the TRB execution result.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The TRB is executed successfully.
@retval EFI_NOT_READY     The TRB is not completed for execution.
@retval Others            Some erros happen when executing this request.


+**/
+EFI_STATUS
+SdMmcCheckTrbResult (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
)

+{

EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
UINT16                              IntStatus;
UINT32                              Response[4];
UINT32                              SdmaAddr;
UINT8                               Index;
UINT8                               SwReset;
UINT32                              PioLength;

SwReset = 0;
Packet  = Trb->Packet;
//
// Check Trb execution result by reading Normal Interrupt Status register.
//
Status = SdMmcHcRwMmio (
        Private->PciIo,


        Trb->Slot,


        SD_MMC_HC_NOR_INT_STS,


        TRUE,


        sizeof (IntStatus),


        &IntStatus


        );


if (EFI_ERROR (Status)) {
goto Done;
}
//
// Check Transfer Complete bit is set or not.
//
if ((IntStatus & BIT1) == BIT1) {
if ((IntStatus & BIT15) == BIT15) {
 //


 // Read Error Interrupt Status register to check if the error is


 // Data Timeout Error.


 // If yes, treat it as success as Transfer Complete has higher


 // priority than Data Timeout Error.


 //


 Status = SdMmcHcRwMmio (


            Private->PciIo,


            Trb->Slot,


            SD_MMC_HC_ERR_INT_STS,


            TRUE,


            sizeof (IntStatus),


            &IntStatus


            );


 if (!EFI_ERROR (Status)) {


   if ((IntStatus & BIT4) == BIT4) {


     Status = EFI_SUCCESS;


   } else {


     Status = EFI_DEVICE_ERROR;


   }


 }


}

goto Done;
}
//
// Check if there is a error happened during cmd execution.
// If yes, then do error recovery procedure to follow SD Host Controller
// Simplified Spec 3.0 section 3.10.1.
//
if ((IntStatus & BIT15) == BIT15) {
Status = SdMmcHcRwMmio (
          Private->PciIo,


          Trb->Slot,


          SD_MMC_HC_ERR_INT_STS,


          TRUE,


          sizeof (IntStatus),


          &IntStatus


          );


if (EFI_ERROR (Status)) {
 goto Done;


}
if ((IntStatus & 0x0F) != 0) {
 SwReset |= BIT1;


}
if ((IntStatus & 0xF0) != 0) {
 SwReset |= BIT2;


}

Status  = SdMmcHcRwMmio (
           Private->PciIo,


           Trb->Slot,


           SD_MMC_HC_SW_RST,


           FALSE,


           sizeof (SwReset),


           &SwReset


           );


if (EFI_ERROR (Status)) {
 goto Done;


}
Status = SdMmcHcWaitMmioSet (
          Private->PciIo,


          Trb->Slot,


          SD_MMC_HC_SW_RST,


          sizeof (SwReset),


          0xFF,


          0,


          SD_MMC_HC_GENERIC_TIMEOUT


          );


if (EFI_ERROR (Status)) {
 goto Done;


}

Status = EFI_DEVICE_ERROR;
goto Done;
}
//
// Check if DMA interrupt is signalled for the SDMA transfer.
//
if ((Trb->Mode == SdMmcSdmaMode) && ((IntStatus & BIT3) == BIT3)) {
//
// Clear DMA interrupt bit.
//
IntStatus = BIT3;
Status    = SdMmcHcRwMmio (
             Private->PciIo,


             Trb->Slot,


             SD_MMC_HC_NOR_INT_STS,


             FALSE,


             sizeof (IntStatus),


             &IntStatus


             );


if (EFI_ERROR (Status)) {
 goto Done;


}
//
// Update SDMA Address register.
//
SdmaAddr = SD_MMC_SDMA_ROUND_UP ((UINT32)(UINTN)Trb->DataPhy, SD_MMC_SDMA_BOUNDARY);
Status   = SdMmcHcRwMmio (
            Private->PciIo,


            Trb->Slot,


            SD_MMC_HC_SDMA_ADDR,


            FALSE,


            sizeof (UINT32),


            &SdmaAddr


            );


if (EFI_ERROR (Status)) {
 goto Done;


}
Trb->DataPhy = (UINT32)(UINTN)SdmaAddr;
}

if ((Packet->SdMmcCmdBlk->CommandType != SdMmcCommandTypeAdtc) &&
 (Packet->SdMmcCmdBlk->ResponseType != SdMmcResponseTypeR1b) &&


 (Packet->SdMmcCmdBlk->ResponseType != SdMmcResponseTypeR5b)) {


if ((IntStatus & BIT0) == BIT0) {
 Status = EFI_SUCCESS;


 goto Done;


}
}

if (((Private->Slot[Trb->Slot].CardType == EmmcCardType) &&
  (Packet->SdMmcCmdBlk->CommandIndex == EMMC_SEND_TUNING_BLOCK)) ||


 ((Private->Slot[Trb->Slot].CardType == SdCardType) &&


  (Packet->SdMmcCmdBlk->CommandIndex == SD_SEND_TUNING_BLOCK))) {


//
// When performing tuning procedure (Execute Tuning is set to 1) through PIO mode,
// wait Buffer Read Ready bit of Normal Interrupt Status Register to be 1.
// Refer to SD Host Controller Simplified Specification 3.0 figure 2-29 for details.
//
if ((IntStatus & BIT5) == BIT5) {
 //


 // Clear Buffer Read Ready interrupt at first.


 //


 IntStatus = BIT5;


 SdMmcHcRwMmio (Private->PciIo, Trb->Slot, SD_MMC_HC_NOR_INT_STS, FALSE, sizeof (IntStatus), &IntStatus);


 //


 // Read data out from Buffer Port register


 //


 for (PioLength = 0; PioLength < Trb->DataLen; PioLength += 4) {


   SdMmcHcRwMmio (Private->PciIo, Trb->Slot, SD_MMC_HC_BUF_DAT_PORT, TRUE, 4, (UINT8*)Trb->Data + PioLength);


 }


 Status = EFI_SUCCESS;


 goto Done;


}
}

Status = EFI_NOT_READY;

+Done:

//
// Get response data when the cmd is executed successfully.
//
if (!EFI_ERROR (Status)) {
if (Packet->SdMmcCmdBlk->CommandType != SdMmcCommandTypeBc) {
 for (Index = 0; Index < 4; Index++) {


   Status = SdMmcHcRwMmio (


              Private->PciIo,


              Trb->Slot,


              SD_MMC_HC_RESPONSE + Index * 4,


              TRUE,


              sizeof (UINT32),


              &Response[Index]


              );


   if (EFI_ERROR (Status)) {


     SdMmcHcLedOnOff (Private->PciIo, Trb->Slot, FALSE);


     return Status;


   }


 }


 CopyMem (Packet->SdMmcStatusBlk, Response, sizeof (Response));


}
}

if (Status != EFI_NOT_READY) {
SdMmcHcLedOnOff (Private->PciIo, Trb->Slot, FALSE);
}

return Status;

+}



+/**

Wait for the TRB execution result.

@param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
@param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.

@retval EFI_SUCCESS       The TRB is executed successfully.
@retval Others            Some erros happen when executing this request.


+**/
+EFI_STATUS
+SdMmcWaitTrbResult (

IN SD_MMC_HC_PRIVATE_DATA           *Private,
IN SD_MMC_HC_TRB                    *Trb
)

+{

EFI_STATUS                          Status;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;
UINT64                              Timeout;
BOOLEAN                             InfiniteWait;

Packet = Trb->Packet;
//
// Wait Command Complete Interrupt Status bit in Normal Interrupt Status Register
//
Timeout = Packet->Timeout;
if (Timeout == 0) {
InfiniteWait = TRUE;
} else {
InfiniteWait = FALSE;
}

while (InfiniteWait || (Timeout > 0)) {
//
// Check Trb execution result by reading Normal Interrupt Status register.
//
Status = SdMmcCheckTrbResult (Private, Trb);
if (Status != EFI_NOT_READY) {
 return Status;


}
//
// Stall for 1 microsecond.
//
gBS->Stall (1);

Timeout--;
}

return EFI_TIMEOUT;

+}



diff --git a/Drivers/SdMmc/Xenon/MvSdMmcPciHci.h b/Drivers/SdMmc/Xenon/MvSdMmcPciHci.h
new file mode 100644
index 0000000..fb62758
--- /dev/null
+++ b/Drivers/SdMmc/Xenon/MvSdMmcPciHci.h
@@ -0,0 +1,546 @@
+/** @file


Provides some data structure definitions used by the SD/MMC host controller driver.


+Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php



+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.



+**/



+#ifndef _SD_MMC_PCI_HCI_H_
+#define _SD_MMC_PCI_HCI_H_



+//
+// SD Host Controller SlotInfo Register Offset
+//
+#define SD_MMC_HC_SLOT_OFFSET         0x40



+#define SD_MMC_HC_MAX_SLOT            6



+//
+// SD Host Controller MMIO Register Offset
+//
+#define SD_MMC_HC_SDMA_ADDR           0x00
+#define SD_MMC_HC_ARG2                0x00
+#define SD_MMC_HC_BLK_SIZE            0x04
+#define SD_MMC_HC_BLK_COUNT           0x06
+#define SD_MMC_HC_ARG1                0x08
+#define SD_MMC_HC_TRANS_MOD           0x0C
+#define SD_MMC_HC_COMMAND             0x0E
+#define SD_MMC_HC_RESPONSE            0x10
+#define SD_MMC_HC_BUF_DAT_PORT        0x20
+#define SD_MMC_HC_PRESENT_STATE       0x24
+#define SD_MMC_HC_HOST_CTRL1          0x28
+#define SD_MMC_HC_POWER_CTRL          0x29
+#define SD_MMC_HC_BLK_GAP_CTRL        0x2A
+#define SD_MMC_HC_WAKEUP_CTRL         0x2B
+#define SD_MMC_HC_CLOCK_CTRL          0x2C
+#define SD_MMC_HC_TIMEOUT_CTRL        0x2E
+#define SD_MMC_HC_SW_RST              0x2F
+#define SD_MMC_HC_NOR_INT_STS         0x30
+#define SD_MMC_HC_ERR_INT_STS         0x32
+#define SD_MMC_HC_NOR_INT_STS_EN      0x34
+#define SD_MMC_HC_ERR_INT_STS_EN      0x36
+#define SD_MMC_HC_NOR_INT_SIG_EN      0x38
+#define SD_MMC_HC_ERR_INT_SIG_EN      0x3A
+#define SD_MMC_HC_AUTO_CMD_ERR_STS    0x3C
+#define SD_MMC_HC_HOST_CTRL2          0x3E
+#define SD_MMC_HC_CAP                 0x40
+#define SD_MMC_HC_MAX_CURRENT_CAP     0x48
+#define SD_MMC_HC_FORCE_EVT_AUTO_CMD  0x50
+#define SD_MMC_HC_FORCE_EVT_ERR_INT   0x52
+#define SD_MMC_HC_ADMA_ERR_STS        0x54
+#define SD_MMC_HC_ADMA_SYS_ADDR       0x58
+#define SD_MMC_HC_PRESET_VAL          0x60
+#define SD_MMC_HC_SHARED_BUS_CTRL     0xE0
+#define SD_MMC_HC_SLOT_INT_STS        0xFC
+#define SD_MMC_HC_CTRL_VER            0xFE



+//
+// The transfer modes supported by SD Host Controller
+// Simplified Spec 3.0 Table 1-2
+//
+typedef enum {

SdMmcNoData,
SdMmcPioMode,
SdMmcSdmaMode,
SdMmcAdmaMode

+} SD_MMC_HC_TRANSFER_MODE;



+//
+// The maximum data length of each descriptor line
+//
+#define ADMA_MAX_DATA_PER_LINE     0x10000



+typedef struct {

UINT32 Valid:1;
UINT32 End:1;
UINT32 Int:1;
UINT32 Reserved:1;
UINT32 Act:2;
UINT32 Reserved1:10;
UINT32 Length:16;
UINT32 Address;

+} SD_MMC_HC_ADMA_DESC_LINE;



+#define SD_MMC_SDMA_BOUNDARY          512 * 1024
+#define SD_MMC_SDMA_ROUND_UP(x, n)    (((x) + n) & ~(n - 1))



+typedef struct {

UINT8    FirstBar:3;        // bit 0:2
UINT8    Reserved:1;        // bit 3
UINT8    SlotNum:3;         // bit 4:6
UINT8    Reserved1:1;       // bit 7

+} SD_MMC_HC_SLOT_INFO;



+typedef struct {

UINT32   TimeoutFreq:6;     // bit 0:5
UINT32   Reserved:1;        // bit 6
UINT32   TimeoutUnit:1;     // bit 7
UINT32   BaseClkFreq:8;     // bit 8:15
UINT32   MaxBlkLen:2;       // bit 16:17
UINT32   BusWidth8:1;       // bit 18
UINT32   Adma2:1;           // bit 19
UINT32   Reserved2:1;       // bit 20
UINT32   HighSpeed:1;       // bit 21
UINT32   Sdma:1;            // bit 22
UINT32   SuspRes:1;         // bit 23
UINT32   Voltage33:1;       // bit 24
UINT32   Voltage30:1;       // bit 25
UINT32   Voltage18:1;       // bit 26
UINT32   Reserved3:1;       // bit 27
UINT32   SysBus64:1;        // bit 28
UINT32   AsyncInt:1;        // bit 29
UINT32   SlotType:2;        // bit 30:31
UINT32   Sdr50:1;           // bit 32
UINT32   Sdr104:1;          // bit 33
UINT32   Ddr50:1;           // bit 34
UINT32   Reserved4:1;       // bit 35
UINT32   DriverTypeA:1;     // bit 36
UINT32   DriverTypeC:1;     // bit 37
UINT32   DriverTypeD:1;     // bit 38
UINT32   DriverType4:1;     // bit 39
UINT32   TimerCount:4;      // bit 40:43
UINT32   Reserved5:1;       // bit 44
UINT32   TuningSDR50:1;     // bit 45
UINT32   RetuningMod:2;     // bit 46:47
UINT32   ClkMultiplier:8;   // bit 48:55
UINT32   Reserved6:7;       // bit 56:62
UINT32   Hs400:1;           // bit 63

+} SD_MMC_HC_SLOT_CAP;



+/**

Dump the content of SD/MMC host controller's Capability Register.

@param[in]  Slot            The slot number of the SD card to send the command to.
@param[in]  Capability      The buffer to store the capability data.


+**/
+VOID
+DumpCapabilityReg (

IN UINT8                Slot,
IN SD_MMC_HC_SLOT_CAP   *Capability
);


+/**

Read SlotInfo register from SD/MMC host controller pci config space.

@param[in]  PciIo        The PCI IO protocol instance.
@param[out] FirstBar     The buffer to store the first BAR value.
@param[out] SlotNum      The buffer to store the supported slot number.

@retval EFI_SUCCESS      The operation succeeds.
@retval Others           The operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcGetSlotInfo (

IN     EFI_PCI_IO_PROTOCOL   *PciIo,
OUT UINT8                 *FirstBar,


OUT UINT8                 *SlotNum


);


+/**

Read/Write specified SD/MMC host controller mmio register.

@param[in]      PciIo        The PCI IO protocol instance.
@param[in]      BarIndex     The BAR index of the standard PCI Configuration
                          header to use as the base address for the memory


                          operation to perform.


@param[in]      Offset       The offset within the selected BAR to start the
                          memory operation.


@param[in]      Read         A boolean to indicate it's read or write operation.
@param[in]      Count        The width of the mmio register in bytes.
                          Must be 1, 2 , 4 or 8 bytes.


@param[in, out] Data         For read operations, the destination buffer to store
                          the results. For write operations, the source buffer


                          to write data from. The caller is responsible for


                          having ownership of the data buffer and ensuring its


                          size not less than Count bytes.



@retval EFI_INVALID_PARAMETER The PciIo or Data is NULL or the Count is not valid.
@retval EFI_SUCCESS           The read/write operation succeeds.
@retval Others                The read/write operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcRwMmio (

IN     EFI_PCI_IO_PROTOCOL   *PciIo,
IN     UINT8                 BarIndex,
IN     UINT32                Offset,
IN     BOOLEAN               Read,
IN     UINT8                 Count,
IN OUT VOID                  *Data
);


+/**

Do OR operation with the value of the specified SD/MMC host controller mmio register.

@param[in] PciIo             The PCI IO protocol instance.
@param[in] BarIndex          The BAR index of the standard PCI Configuration
                          header to use as the base address for the memory


                          operation to perform.


@param[in] Offset            The offset within the selected BAR to start the
                          memory operation.


@param[in] Count             The width of the mmio register in bytes.
                          Must be 1, 2 , 4 or 8 bytes.


@param[in] OrData            The pointer to the data used to do OR operation.
                          The caller is responsible for having ownership of


                          the data buffer and ensuring its size not less than


                          Count bytes.



@retval EFI_INVALID_PARAMETER The PciIo or OrData is NULL or the Count is not valid.
@retval EFI_SUCCESS           The OR operation succeeds.
@retval Others                The OR operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcOrMmio (

IN  EFI_PCI_IO_PROTOCOL      *PciIo,
IN  UINT8                    BarIndex,
IN  UINT32                   Offset,
IN  UINT8                    Count,
IN  VOID                     *OrData
);


+/**

Do AND operation with the value of the specified SD/MMC host controller mmio register.

@param[in] PciIo             The PCI IO protocol instance.
@param[in] BarIndex          The BAR index of the standard PCI Configuration
                          header to use as the base address for the memory


                          operation to perform.


@param[in] Offset            The offset within the selected BAR to start the
                          memory operation.


@param[in] Count             The width of the mmio register in bytes.
                          Must be 1, 2 , 4 or 8 bytes.


@param[in] AndData           The pointer to the data used to do AND operation.
                          The caller is responsible for having ownership of


                          the data buffer and ensuring its size not less than


                          Count bytes.



@retval EFI_INVALID_PARAMETER The PciIo or AndData is NULL or the Count is not valid.
@retval EFI_SUCCESS           The AND operation succeeds.
@retval Others                The AND operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcAndMmio (

IN  EFI_PCI_IO_PROTOCOL      *PciIo,
IN  UINT8                    BarIndex,
IN  UINT32                   Offset,
IN  UINT8                    Count,
IN  VOID                     *AndData
);


+/**

Wait for the value of the specified MMIO register set to the test value.

@param[in]  PciIo         The PCI IO protocol instance.
@param[in]  BarIndex      The BAR index of the standard PCI Configuration
                       header to use as the base address for the memory


                       operation to perform.


@param[in]  Offset        The offset within the selected BAR to start the
                       memory operation.


@param[in]  Count         The width of the mmio register in bytes.
                       Must be 1, 2, 4 or 8 bytes.


@param[in]  MaskValue     The mask value of memory.
@param[in]  TestValue     The test value of memory.
@param[in]  Timeout       The time out value for wait memory set, uses 1
                       microsecond as a unit.



@retval EFI_TIMEOUT       The MMIO register hasn't expected value in timeout
                       range.


@retval EFI_SUCCESS       The MMIO register has expected value.
@retval Others            The MMIO operation fails.


+**/
+EFI_STATUS
+EFIAPI
+SdMmcHcWaitMmioSet (

IN  EFI_PCI_IO_PROTOCOL       *PciIo,
IN  UINT8                     BarIndex,
IN  UINT32                    Offset,
IN  UINT8                     Count,
IN  UINT64                    MaskValue,
IN  UINT64                    TestValue,
IN  UINT64                    Timeout
);


+/**

Software reset the specified SD/MMC host controller.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The software reset executes successfully.
@retval Others            The software reset fails.


+**/
+EFI_STATUS
+SdMmcHcReset (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
);


+/**

Set all interrupt status bits in Normal and Error Interrupt Status Enable
register.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The operation executes successfully.
@retval Others            The operation fails.


+**/
+EFI_STATUS
+SdMmcHcEnableInterrupt (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
);


+/**

Get the capability data from the specified slot.

@param[in]  PciIo           The PCI IO protocol instance.
@param[in]  Slot            The slot number of the SD card to send the command to.
@param[out] Capability      The buffer to store the capability data.

@retval EFI_SUCCESS         The operation executes successfully.
@retval Others              The operation fails.


+**/
+EFI_STATUS
+SdMmcHcGetCapability (

IN     EFI_PCI_IO_PROTOCOL  *PciIo,
IN     UINT8                Slot,
OUT SD_MMC_HC_SLOT_CAP   *Capability


);


+/**

Get the maximum current capability data from the specified slot.

@param[in]  PciIo           The PCI IO protocol instance.
@param[in]  Slot            The slot number of the SD card to send the command to.
@param[out] MaxCurrent      The buffer to store the maximum current capability data.

@retval EFI_SUCCESS         The operation executes successfully.
@retval Others              The operation fails.


+**/
+EFI_STATUS
+SdMmcHcGetMaxCurrent (

IN     EFI_PCI_IO_PROTOCOL  *PciIo,
IN     UINT8                Slot,
OUT UINT64               *MaxCurrent


);


+/**

Detect whether there is a SD/MMC card attached at the specified SD/MMC host controller
slot.

Refer to SD Host Controller Simplified spec 3.0 Section 3.1 for details.

@param[in]  PciIo         The PCI IO protocol instance.
@param[in]  Slot          The slot number of the SD card to send the command to.
@param[out] MediaPresent  The pointer to the media present boolean value.

@retval EFI_SUCCESS       There is no media change happened.
@retval EFI_MEDIA_CHANGED There is media change happened.
@retval Others            The detection fails.


+**/
+EFI_STATUS
+SdMmcHcCardDetect (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
OUT BOOLEAN            *MediaPresent


);


+/**

Stop SD/MMC card clock.

Refer to SD Host Controller Simplified spec 3.0 Section 3.2.2 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       Succeed to stop SD/MMC clock.
@retval Others            Fail to stop SD/MMC clock.


+**/
+EFI_STATUS
+SdMmcHcStopClock (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
);


+/**

SD/MMC card clock supply.

Refer to SD Host Controller Simplified spec 3.0 Section 3.2.1 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] ClockFreq      The max clock frequency to be set. The unit is KHz.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The clock is supplied successfully.
@retval Others            The clock isn't supplied successfully.


+**/
+EFI_STATUS
+SdMmcHcClockSupply (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN UINT64                 ClockFreq,
IN SD_MMC_HC_SLOT_CAP     Capability
);


+/**

SD/MMC bus power control.

Refer to SD Host Controller Simplified spec 3.0 Section 3.3 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] PowerCtrl      The value setting to the power control register.

@retval TRUE              There is a SD/MMC card attached.
@retval FALSE             There is no a SD/MMC card attached.


+**/
+EFI_STATUS
+SdMmcHcPowerControl (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN UINT8                  PowerCtrl
);


+/**

Set the SD/MMC bus width.

Refer to SD Host Controller Simplified spec 3.0 Section 3.4 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] BusWidth       The bus width used by the SD/MMC device, it must be 1, 4 or 8.

@retval EFI_SUCCESS       The bus width is set successfully.
@retval Others            The bus width isn't set successfully.


+**/
+EFI_STATUS
+SdMmcHcSetBusWidth (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN UINT16                 BusWidth
);


+/**

Supply SD/MMC card with lowest clock frequency at initialization.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The clock is supplied successfully.
@retval Others            The clock isn't supplied successfully.


+**/
+EFI_STATUS
+SdMmcHcInitClockFreq (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN SD_MMC_HC_SLOT_CAP     Capability
);


+/**

Supply SD/MMC card with maximum voltage at initialization.

Refer to SD Host Controller Simplified spec 3.0 Section 3.3 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The voltage is supplied successfully.
@retval Others            The voltage isn't supplied successfully.


+**/
+EFI_STATUS
+SdMmcHcInitPowerVoltage (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN SD_MMC_HC_SLOT_CAP     Capability
);


+/**

Initialize the Timeout Control register with most conservative value at initialization.

Refer to SD Host Controller Simplified spec 3.0 Section 2.2.15 for details.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.

@retval EFI_SUCCESS       The timeout control register is configured successfully.
@retval Others            The timeout control register isn't configured successfully.


+**/
+EFI_STATUS
+SdMmcHcInitTimeoutCtrl (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot
);


+/**

Initial SD/MMC host controller with lowest clock frequency, max power and max timeout value
at initialization.

@param[in] PciIo          The PCI IO protocol instance.
@param[in] Slot           The slot number of the SD card to send the command to.
@param[in] Capability     The capability of the slot.

@retval EFI_SUCCESS       The host controller is initialized successfully.
@retval Others            The host controller isn't initialized successfully.


+**/
+EFI_STATUS
+SdMmcHcInitHost (

IN EFI_PCI_IO_PROTOCOL    *PciIo,
IN UINT8                  Slot,
IN SD_MMC_HC_SLOT_CAP     Capability
);


+#endif
1.8.3.1

    

2024

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2013

Re: [Linaro-uefi] [PATCH v2 2/5] Drivers/SdMmc: Import SdMmcPciHcDxe driver

+#endif