tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

OvmfPkg/PvScsiDxe: Reset adapter on init 

The following commits will complete the implementation of
device initialization.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2567
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <20200328200100.60786-13-liran.alon@oracle.com>
Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
This commit is contained in:
Liran Alon 2020-03-28 23:00:55 +03:00 committed by mergify[bot]
parent 447e5d3902
commit 5269c26e07
1 changed files with 114 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
OvmfPkg/PvScsiDxe/PvScsi.c
View File

@ -30,6 +30,107 @@
// Ext SCSI Pass Thru utilities
//
/**
Writes a 32-bit value into BAR0 using MMIO
**/
STATIC
EFI_STATUS
PvScsiMmioWrite32 (
IN CONST PVSCSI_DEV *Dev,
IN UINT64 Offset,
IN UINT32 Value
)
{
return Dev->PciIo->Mem.Write (
Dev->PciIo,
EfiPciIoWidthUint32,
PCI_BAR_IDX0,
Offset,
1, // Count
&Value
);
}
/**
Writes multiple words of data into BAR0 using MMIO
**/
STATIC
EFI_STATUS
PvScsiMmioWrite32Multiple (
IN CONST PVSCSI_DEV *Dev,
IN UINT64 Offset,
IN UINTN Count,
IN UINT32 *Words
)
{
return Dev->PciIo->Mem.Write (
Dev->PciIo,
EfiPciIoWidthFifoUint32,
PCI_BAR_IDX0,
Offset,
Count,
Words
);
}
/**
Send a PVSCSI command to device.
@param[in] Dev The pvscsi host device.
@param[in] Cmd The command to send to device.
@param[in] OPTIONAL DescWords An optional command descriptor (If command
have a descriptor). The descriptor is
provided as an array of UINT32 words and
is must be 32-bit aligned.
@param[in] DescWordsCount The number of words in command descriptor.
Caller must specify here 0 if DescWords
is not supplied (It is optional). In that
case, DescWords is ignored.
@return Status codes returned by Dev->PciIo->Mem.Write().
**/
STATIC
EFI_STATUS
PvScsiWriteCmdDesc (
IN CONST PVSCSI_DEV *Dev,
IN UINT32 Cmd,
IN UINT32 *DescWords OPTIONAL,
IN UINTN DescWordsCount
)
{
EFI_STATUS Status;
if (DescWordsCount > PVSCSI_MAX_CMD_DATA_WORDS) {
return EFI_INVALID_PARAMETER;
}
Status = PvScsiMmioWrite32 (Dev, PvScsiRegOffsetCommand, Cmd);
if (EFI_ERROR (Status)) {
return Status;
}
if (DescWordsCount > 0) {
return PvScsiMmioWrite32Multiple (
Dev,
PvScsiRegOffsetCommandData,
DescWordsCount,
DescWords
);
}
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
PvScsiResetAdapter (
IN CONST PVSCSI_DEV *Dev
)
{
return PvScsiWriteCmdDesc (Dev, PvScsiCmdAdapterReset, NULL, 0);
}
/**
Check if Target argument to EXT_SCSI_PASS_THRU.GetNextTarget() and
EXT_SCSI_PASS_THRU.GetNextTargetLun() is initialized
@ -357,6 +458,14 @@ PvScsiInit (
return Status;
}
//
// Reset adapter
//
Status = PvScsiResetAdapter (Dev);
if (EFI_ERROR (Status)) {
goto RestorePciAttributes;
}
//
// Populate the exported interface's attributes
//
@ -387,6 +496,11 @@ PvScsiInit (
Dev->PassThruMode.IoAlign = 0;
return EFI_SUCCESS;
RestorePciAttributes:
PvScsiRestorePciAttributes (Dev);
return Status;
}
STATIC