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1. Eliminate RemainingDevicePath Type limitation, let PassThru to check its validation. 

2. Change ScsiTargetId from allocation to local variable.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9706 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
davidhuang 2010-01-11 05:44:16 +00:00
parent 8fe69f133e
commit d548f0a10c
1 changed files with 73 additions and 70 deletions
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107
MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBus.c
View File

@ -2,7 +2,7 @@
SCSI Bus driver that layers on every SCSI Pass Thru and
Extended SCSI Pass Thru protocol in the system.
Copyright (c) 2006 - 2009, Intel Corporation. <BR>
Copyright (c) 2006 - 2010, Intel Corporation. <BR>
All rights reserved. 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
@ -145,29 +145,17 @@ SCSIBusDriverBindingSupported (
EFI_STATUS Status;
EFI_SCSI_PASS_THRU_PROTOCOL *PassThru;
EFI_EXT_SCSI_PASS_THRU_PROTOCOL *ExtPassThru;
EFI_DEV_PATH *Node;
UINT64 Lun;
UINT8 *TargetId;
SCSI_TARGET_ID ScsiTargetId;
if (RemainingDevicePath != NULL) {
Node = (EFI_DEV_PATH *) RemainingDevicePath;
//
// Check if RemainingDevicePath is the End of Device Path Node,
// if yes, go on checking other conditions
//
if (!IsDevicePathEnd (Node)) {
//
// If RemainingDevicePath isn't the End of Device Path Node,
// check its validation
//
if (Node->DevPath.Type != MESSAGING_DEVICE_PATH ||
Node->DevPath.SubType != MSG_SCSI_DP ||
DevicePathNodeLength(&Node->DevPath) != sizeof(SCSI_DEVICE_PATH)) {
return EFI_UNSUPPORTED;
}
}
}
TargetId = &ScsiTargetId.ScsiId.ExtScsi[0];
SetMem (TargetId, TARGET_MAX_BYTES, 0xFF);
//
// Check for the existence of Extended SCSI Pass Thru Protocol and SCSI Pass Thru Protocol
// To keep backward compatibility, UEFI ExtPassThru Protocol is supported as well as
// EFI PassThru Protocol. From priority perspective, ExtPassThru Protocol is firstly
// tried to open on host controller handle. If fails, then PassThru Protocol is tried instead.
//
Status = gBS->OpenProtocol (
Controller,
@ -180,9 +168,38 @@ SCSIBusDriverBindingSupported (
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
} else if (!EFI_ERROR(Status)) {
//
// Check if RemainingDevicePath is NULL or the End of Device Path Node,
// if yes, return EFI_SUCCESS.
//
if ((RemainingDevicePath == NULL) || IsDevicePathEnd (RemainingDevicePath)) {
return EFI_SUCCESS;
} else {
//
// If RemainingDevicePath isn't the End of Device Path Node, check its validation
//
Status = ExtPassThru->GetTargetLun (ExtPassThru, RemainingDevicePath, &TargetId, &Lun);
//
// Close protocol regardless of RemainingDevicePath validation
//
gBS->CloseProtocol (
Controller,
&gEfiExtScsiPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (!EFI_ERROR(Status)) {
return EFI_SUCCESS;
}
}
}
if (EFI_ERROR (Status)) {
//
// Come here in 2 condition:
// 1. ExtPassThru doesn't exist.
// 2. ExtPassThru exists but RemainingDevicePath is invalid.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiScsiPassThruProtocolGuid,
@ -200,26 +217,20 @@ SCSIBusDriverBindingSupported (
return Status;
}
//
// Test RemainingDevicePath is valid or not.
//
if ((RemainingDevicePath != NULL) && !IsDevicePathEnd (RemainingDevicePath)) {
Status = PassThru->GetTargetLun (PassThru, RemainingDevicePath, &ScsiTargetId.ScsiId.Scsi, &Lun);
}
gBS->CloseProtocol (
Controller,
&gEfiScsiPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
}
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiExtScsiPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
return Status;
}
@ -259,25 +270,20 @@ SCSIBusDriverBindingStart (
EFI_STATUS DevicePathStatus;
EFI_STATUS PassThruStatus;
SCSI_BUS_DEVICE *ScsiBusDev;
SCSI_TARGET_ID *ScsiTargetId;
SCSI_TARGET_ID ScsiTargetId;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_SCSI_PASS_THRU_PROTOCOL *ScsiInterface;
EFI_EXT_SCSI_PASS_THRU_PROTOCOL *ExtScsiInterface;
EFI_SCSI_BUS_PROTOCOL *BusIdentify;
TargetId = NULL;
ScsiTargetId = NULL;
ScanOtherPuns = TRUE;
FromFirstTarget = FALSE;
ExtScsiSupport = FALSE;
PassThruStatus = EFI_SUCCESS;
ScsiTargetId = AllocateZeroPool(sizeof(SCSI_TARGET_ID));
if (ScsiTargetId == NULL) {
return EFI_OUT_OF_RESOURCES;
}
TargetId = &ScsiTargetId->ScsiId.ExtScsi[0];
TargetId = &ScsiTargetId.ScsiId.ExtScsi[0];
SetMem (TargetId, TARGET_MAX_BYTES, 0xFF);
DevicePathStatus = gBS->OpenProtocol (
Controller,
@ -407,9 +413,7 @@ SCSIBusDriverBindingStart (
// If RemainingDevicePath is NULL,
// must enumerate all SCSI devices anyway
//
SetMem (ScsiTargetId, TARGET_MAX_BYTES,0xFF);
FromFirstTarget = TRUE;
} else if (!IsDevicePathEnd (RemainingDevicePath)) {
//
// If RemainingDevicePath isn't the End of Device Path Node,
@ -418,7 +422,7 @@ SCSIBusDriverBindingStart (
if (ScsiBusDev->ExtScsiSupport) {
ScsiBusDev->ExtScsiInterface->GetTargetLun (ScsiBusDev->ExtScsiInterface, RemainingDevicePath, &TargetId, &Lun);
} else {
ScsiBusDev->ScsiInterface->GetTargetLun (ScsiBusDev->ScsiInterface, RemainingDevicePath, &ScsiTargetId->ScsiId.Scsi, &Lun);
ScsiBusDev->ScsiInterface->GetTargetLun (ScsiBusDev->ScsiInterface, RemainingDevicePath, &ScsiTargetId.ScsiId.Scsi, &Lun);
}
} else {
@ -438,7 +442,7 @@ SCSIBusDriverBindingStart (
if (ScsiBusDev->ExtScsiSupport) {
Status = ScsiBusDev->ExtScsiInterface->GetNextTargetLun (ScsiBusDev->ExtScsiInterface, &TargetId, &Lun);
} else {
Status = ScsiBusDev->ScsiInterface->GetNextDevice (ScsiBusDev->ScsiInterface, &ScsiTargetId->ScsiId.Scsi, &Lun);
Status = ScsiBusDev->ScsiInterface->GetNextDevice (ScsiBusDev->ScsiInterface, &ScsiTargetId.ScsiId.Scsi, &Lun);
}
if (EFI_ERROR (Status)) {
//
@ -453,11 +457,11 @@ SCSIBusDriverBindingStart (
// Avoid creating handle for the host adapter.
//
if (ScsiBusDev->ExtScsiSupport) {
if ((ScsiTargetId->ScsiId.Scsi) == ScsiBusDev->ExtScsiInterface->Mode->AdapterId) {
if ((ScsiTargetId.ScsiId.Scsi) == ScsiBusDev->ExtScsiInterface->Mode->AdapterId) {
continue;
}
} else {
if ((ScsiTargetId->ScsiId.Scsi) == ScsiBusDev->ScsiInterface->Mode->AdapterId) {
if ((ScsiTargetId.ScsiId.Scsi) == ScsiBusDev->ScsiInterface->Mode->AdapterId) {
continue;
}
}
@ -465,9 +469,8 @@ SCSIBusDriverBindingStart (
// Scan for the scsi device, if it attaches to the scsi bus,
// then create handle and install scsi i/o protocol.
//
Status = ScsiScanCreateDevice (This, Controller, ScsiTargetId, Lun, ScsiBusDev);
Status = ScsiScanCreateDevice (This, Controller, &ScsiTargetId, Lun, ScsiBusDev);
}
FreePool (ScsiTargetId);
return EFI_SUCCESS;
ErrorExit: