diff options
Diffstat (limited to 'OvmfPkg/PvScsiDxe')
| -rw-r--r-- | OvmfPkg/PvScsiDxe/PvScsi.c | 209 | ||||
| -rw-r--r-- | OvmfPkg/PvScsiDxe/PvScsi.h | 29 | ||||
| -rw-r--r-- | OvmfPkg/PvScsiDxe/PvScsiDxe.inf | 6 |
3 files changed, 241 insertions, 3 deletions
diff --git a/OvmfPkg/PvScsiDxe/PvScsi.c b/OvmfPkg/PvScsiDxe/PvScsi.c index 9923a31d25..04c08036b7 100644 --- a/OvmfPkg/PvScsiDxe/PvScsi.c +++ b/OvmfPkg/PvScsiDxe/PvScsi.c @@ -11,11 +11,14 @@ #include <IndustryStandard/Pci.h>
#include <IndustryStandard/PvScsi.h>
+#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Protocol/PciIo.h>
#include <Uefi/UefiSpec.h>
+#include "PvScsi.h"
+
//
// Higher versions will be used before lower, 0x10-0xffffffef is the version
// range for IHV (Indie Hardware Vendors)
@@ -23,6 +26,142 @@ #define PVSCSI_BINDING_VERSION 0x10
//
+// Ext SCSI Pass Thru
+//
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiPassThru (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
+ IN UINT8 *Target,
+ IN UINT64 Lun,
+ IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,
+ IN EFI_EVENT Event OPTIONAL
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiGetNextTargetLun (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
+ IN OUT UINT8 **Target,
+ IN OUT UINT64 *Lun
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiBuildDevicePath (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
+ IN UINT8 *Target,
+ IN UINT64 Lun,
+ IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiGetTargetLun (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
+ IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
+ OUT UINT8 **Target,
+ OUT UINT64 *Lun
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiResetChannel (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiResetTargetLun (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
+ IN UINT8 *Target,
+ IN UINT64 Lun
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+PvScsiGetNextTarget (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
+ IN OUT UINT8 **Target
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+PvScsiInit (
+ IN OUT PVSCSI_DEV *Dev
+ )
+{
+ //
+ // Populate the exported interface's attributes
+ //
+ Dev->PassThru.Mode = &Dev->PassThruMode;
+ Dev->PassThru.PassThru = &PvScsiPassThru;
+ Dev->PassThru.GetNextTargetLun = &PvScsiGetNextTargetLun;
+ Dev->PassThru.BuildDevicePath = &PvScsiBuildDevicePath;
+ Dev->PassThru.GetTargetLun = &PvScsiGetTargetLun;
+ Dev->PassThru.ResetChannel = &PvScsiResetChannel;
+ Dev->PassThru.ResetTargetLun = &PvScsiResetTargetLun;
+ Dev->PassThru.GetNextTarget = &PvScsiGetNextTarget;
+
+ //
+ // AdapterId is a target for which no handle will be created during bus scan.
+ // Prevent any conflict with real devices.
+ //
+ Dev->PassThruMode.AdapterId = MAX_UINT32;
+
+ //
+ // Set both physical and logical attributes for non-RAID SCSI channel
+ //
+ Dev->PassThruMode.Attributes = EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL |
+ EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL;
+
+ //
+ // No restriction on transfer buffer alignment
+ //
+ Dev->PassThruMode.IoAlign = 0;
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+VOID
+PvScsiUninit (
+ IN OUT PVSCSI_DEV *Dev
+ )
+{
+ // Currently nothing to do here
+}
+
+//
// Driver Binding
//
@@ -90,7 +229,42 @@ PvScsiDriverBindingStart ( IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
- return EFI_UNSUPPORTED;
+ PVSCSI_DEV *Dev;
+ EFI_STATUS Status;
+
+ Dev = (PVSCSI_DEV *) AllocateZeroPool (sizeof (*Dev));
+ if (Dev == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = PvScsiInit (Dev);
+ if (EFI_ERROR (Status)) {
+ goto FreePvScsi;
+ }
+
+ //
+ // Setup complete, attempt to export the driver instance's PassThru interface
+ //
+ Dev->Signature = PVSCSI_SIG;
+ Status = gBS->InstallProtocolInterface (
+ &ControllerHandle,
+ &gEfiExtScsiPassThruProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &Dev->PassThru
+ );
+ if (EFI_ERROR (Status)) {
+ goto UninitDev;
+ }
+
+ return EFI_SUCCESS;
+
+UninitDev:
+ PvScsiUninit (Dev);
+
+FreePvScsi:
+ FreePool (Dev);
+
+ return Status;
}
STATIC
@@ -103,7 +277,38 @@ PvScsiDriverBindingStop ( IN EFI_HANDLE *ChildHandleBuffer
)
{
- return EFI_UNSUPPORTED;
+ EFI_STATUS Status;
+ EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru;
+ PVSCSI_DEV *Dev;
+
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiExtScsiPassThruProtocolGuid,
+ (VOID **)&PassThru,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL // Lookup only
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Dev = PVSCSI_FROM_PASS_THRU (PassThru);
+
+ Status = gBS->UninstallProtocolInterface (
+ ControllerHandle,
+ &gEfiExtScsiPassThruProtocolGuid,
+ &Dev->PassThru
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ PvScsiUninit (Dev);
+
+ FreePool (Dev);
+
+ return EFI_SUCCESS;
}
STATIC EFI_DRIVER_BINDING_PROTOCOL mPvScsiDriverBinding = {
diff --git a/OvmfPkg/PvScsiDxe/PvScsi.h b/OvmfPkg/PvScsiDxe/PvScsi.h new file mode 100644 index 0000000000..3940b4c200 --- /dev/null +++ b/OvmfPkg/PvScsiDxe/PvScsi.h @@ -0,0 +1,29 @@ +/** @file
+
+ Internal definitions for the PVSCSI driver, which produces Extended SCSI
+ Pass Thru Protocol instances for pvscsi devices.
+
+ Copyright (C) 2020, Oracle and/or its affiliates.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __PVSCSI_DXE_H_
+#define __PVSCSI_DXE_H_
+
+#include <Library/DebugLib.h>
+#include <Protocol/ScsiPassThruExt.h>
+
+#define PVSCSI_SIG SIGNATURE_32 ('P', 'S', 'C', 'S')
+
+typedef struct {
+ UINT32 Signature;
+ EFI_EXT_SCSI_PASS_THRU_PROTOCOL PassThru;
+ EFI_EXT_SCSI_PASS_THRU_MODE PassThruMode;
+} PVSCSI_DEV;
+
+#define PVSCSI_FROM_PASS_THRU(PassThruPointer) \
+ CR (PassThruPointer, PVSCSI_DEV, PassThru, PVSCSI_SIG)
+
+#endif // __PVSCSI_DXE_H_
diff --git a/OvmfPkg/PvScsiDxe/PvScsiDxe.inf b/OvmfPkg/PvScsiDxe/PvScsiDxe.inf index c1f0663832..f4d452c6c3 100644 --- a/OvmfPkg/PvScsiDxe/PvScsiDxe.inf +++ b/OvmfPkg/PvScsiDxe/PvScsiDxe.inf @@ -19,15 +19,19 @@ [Sources]
PvScsi.c
+ PvScsi.h
[Packages]
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
+ DebugLib
+ MemoryAllocationLib
UefiBootServicesTableLib
UefiDriverEntryPoint
UefiLib
[Protocols]
- gEfiPciIoProtocolGuid ## TO_START
+ gEfiExtScsiPassThruProtocolGuid ## BY_START
+ gEfiPciIoProtocolGuid ## TO_START
|