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/** @file
This driver 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
**/
#include <IndustryStandard/Pci.h>
#include <IndustryStandard/PvScsi.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Protocol/PciIo.h>
#include <Uefi/UefiSpec.h>
//
// Higher versions will be used before lower, 0x10-0xffffffef is the version
// range for IHV (Indie Hardware Vendors)
//
#define PVSCSI_BINDING_VERSION 0x10
//
// Driver Binding
//
STATIC
EFI_STATUS
EFIAPI
PvScsiDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
PCI_TYPE00 Pci;
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
(VOID **)&PciIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint32,
0,
sizeof (Pci) / sizeof (UINT32),
&Pci
);
if (EFI_ERROR (Status)) {
goto Done;
}
if ((Pci.Hdr.VendorId != PCI_VENDOR_ID_VMWARE) ||
(Pci.Hdr.DeviceId != PCI_DEVICE_ID_VMWARE_PVSCSI)) {
Status = EFI_UNSUPPORTED;
goto Done;
}
Status = EFI_SUCCESS;
Done:
gBS->CloseProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
return Status;
}
STATIC
EFI_STATUS
EFIAPI
PvScsiDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
STATIC
EFI_STATUS
EFIAPI
PvScsiDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
return EFI_UNSUPPORTED;
}
STATIC EFI_DRIVER_BINDING_PROTOCOL mPvScsiDriverBinding = {
&PvScsiDriverBindingSupported,
&PvScsiDriverBindingStart,
&PvScsiDriverBindingStop,
PVSCSI_BINDING_VERSION,
NULL, // ImageHandle, filled by EfiLibInstallDriverBindingComponentName2()
NULL // DriverBindingHandle, filled as well
};
//
// Component Name
//
STATIC EFI_UNICODE_STRING_TABLE mDriverNameTable[] = {
{ "eng;en", L"PVSCSI Host Driver" },
{ NULL, NULL }
};
STATIC EFI_COMPONENT_NAME_PROTOCOL mComponentName;
STATIC
EFI_STATUS
EFIAPI
PvScsiGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
)
{
return LookupUnicodeString2 (
Language,
This->SupportedLanguages,
mDriverNameTable,
DriverName,
(BOOLEAN)(This == &mComponentName) // Iso639Language
);
}
STATIC
EFI_STATUS
EFIAPI
PvScsiGetDeviceName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE DeviceHandle,
IN EFI_HANDLE ChildHandle,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
)
{
return EFI_UNSUPPORTED;
}
STATIC EFI_COMPONENT_NAME_PROTOCOL mComponentName = {
&PvScsiGetDriverName,
&PvScsiGetDeviceName,
"eng" // SupportedLanguages, ISO 639-2 language codes
};
STATIC EFI_COMPONENT_NAME2_PROTOCOL mComponentName2 = {
(EFI_COMPONENT_NAME2_GET_DRIVER_NAME) &PvScsiGetDriverName,
(EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) &PvScsiGetDeviceName,
"en" // SupportedLanguages, RFC 4646 language codes
};
//
// Entry Point
//
EFI_STATUS
EFIAPI
PvScsiEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&mPvScsiDriverBinding,
ImageHandle,
&mComponentName,
&mComponentName2
);
}
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