/**
Allocates pages that are suitable for an EfiUfsHcOperationBusMasterCommonBuffer
mapping.
@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance.
@param Type This parameter is not used and must be ignored.
@param MemoryType The type of memory to allocate, EfiBootServicesData or
EfiRuntimeServicesData.
@param Pages The number of pages to allocate.
@param HostAddress A pointer to store the base system memory address of the
allocated range.
@param Attributes The requested bit mask of attributes for the allocated range.
@retval EFI_SUCCESS The requested memory pages were allocated.
@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
MEMORY_WRITE_COMBINE and MEMORY_CACHED.
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
**/
EFI_STATUS
EFIAPI
UfsHcAllocateBuffer (
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
IN EFI_ALLOCATE_TYPE Type,
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN Pages,
OUT VOID **HostAddress,
IN UINT64 Attributes
)
{
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_STATUS Status;
if ((This == NULL) || (HostAddress == NULL)) {
return EFI_INVALID_PARAMETER;
}
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This);
PciIo = Private->PciIo;
Status = PciIo->AllocateBuffer (PciIo, Type, MemoryType, Pages, HostAddress, Attributes);
return Status;
}
/**
Allocate a block of memory to be used by the buffer pool.
@param Pool The buffer pool to allocate memory for.
@param Pages How many pages to allocate.
@return The allocated memory block or NULL if failed.
**/
USBHC_MEM_BLOCK *
UsbHcAllocMemBlock (
IN USBHC_MEM_POOL *Pool,
IN UINTN Pages
)
{
USBHC_MEM_BLOCK *Block;
EFI_PCI_IO_PROTOCOL *PciIo;
VOID *BufHost;
VOID *Mapping;
EFI_PHYSICAL_ADDRESS MappedAddr;
UINTN Bytes;
EFI_STATUS Status;
PciIo = Pool->PciIo;
Block = AllocateZeroPool (sizeof (USBHC_MEM_BLOCK));
if (Block == NULL) {
return NULL;
}
//
// each bit in the bit array represents USBHC_MEM_UNIT
// bytes of memory in the memory block.
//
ASSERT (USBHC_MEM_UNIT * 8 <= EFI_PAGE_SIZE);
Block->BufLen = EFI_PAGES_TO_SIZE (Pages);
Block->BitsLen = Block->BufLen / (USBHC_MEM_UNIT * 8);
Block->Bits = AllocateZeroPool (Block->BitsLen);
if (Block->Bits == NULL) {
gBS->FreePool (Block);
return NULL;
}
//
// Allocate the number of Pages of memory, then map it for
// bus master read and write.
//
Status = PciIo->AllocateBuffer (
PciIo,
AllocateAnyPages,
EfiBootServicesData,
Pages,
&BufHost,
0
);
if (EFI_ERROR (Status)) {
goto FREE_BITARRAY;
}
Bytes = EFI_PAGES_TO_SIZE (Pages);
Status = PciIo->Map (
PciIo,
EfiPciIoOperationBusMasterCommonBuffer,
BufHost,
&Bytes,
&MappedAddr,
&Mapping
);
if (EFI_ERROR (Status) || (Bytes != EFI_PAGES_TO_SIZE (Pages))) {
goto FREE_BUFFER;
}
Block->BufHost = BufHost;
Block->Buf = (UINT8 *) ((UINTN) MappedAddr);
Block->Mapping = Mapping;
return Block;
FREE_BUFFER:
PciIo->FreeBuffer (PciIo, Pages, BufHost);
FREE_BITARRAY:
gBS->FreePool (Block->Bits);
gBS->FreePool (Block);
return NULL;
}
/**
Start this driver on ControllerHandle. This service is called by the
EFI boot service ConnectController(). In order to make
drivers as small as possible, there are a few calling restrictions for
this service. ConnectController() must follow these
calling restrictions. If any other agent wishes to call Start() it
must also follow these calling restrictions.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to bind driver to.
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCESS This driver is added to ControllerHandle
@retval EFI_DEVICE_ERROR This driver could not be started due to a device error
@retval other This driver does not support this device
**/
EFI_STATUS
EFIAPI
SimpleNetworkDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *Nii;
EFI_DEVICE_PATH_PROTOCOL *NiiDevicePath;
EFI_STATUS Status;
PXE_UNDI *Pxe;
SNP_DRIVER *Snp;
VOID *Address;
EFI_HANDLE Handle;
UINT8 BarIndex;
PXE_STATFLAGS InitStatFlags;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BarDesc;
BOOLEAN FoundIoBar;
BOOLEAN FoundMemoryBar;
DEBUG ((EFI_D_NET, "\nSnpNotifyNetworkInterfaceIdentifier() "));
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &NiiDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->LocateDevicePath (
&gEfiPciIoProtocolGuid,
&NiiDevicePath,
&Handle
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->OpenProtocol (
Handle,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get the NII interface.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
(VOID **) &Nii,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
DEBUG ((EFI_D_INFO, "Start(): UNDI3.1 found\n"));
Pxe = (PXE_UNDI *) (UINTN) (Nii->Id);
if (Calc8BitCksum (Pxe, Pxe->hw.Len) != 0) {
DEBUG ((EFI_D_NET, "\n!PXE checksum is not correct.\n"));
goto NiiError;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_RX_SUPPORTED) != 0) {
//
// We can get any packets.
//
} else if ((Pxe->hw.Implementation & PXE_ROMID_IMP_BROADCAST_RX_SUPPORTED) != 0) {
//
// We need to be able to get broadcast packets for DHCP.
// If we do not have promiscuous support, we must at least have
// broadcast support or we cannot do DHCP!
//
} else {
DEBUG ((EFI_D_NET, "\nUNDI does not have promiscuous or broadcast support."));
goto NiiError;
}
//
// OK, we like this UNDI, and we know snp is not already there on this handle
// Allocate and initialize a new simple network protocol structure.
//
Status = PciIo->AllocateBuffer (
PciIo,
AllocateAnyPages,
EfiBootServicesData,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
&Address,
0
);
if (Status != EFI_SUCCESS) {
DEBUG ((EFI_D_NET, "\nCould not allocate SNP_DRIVER structure.\n"));
goto NiiError;
}
Snp = (SNP_DRIVER *) (UINTN) Address;
ZeroMem (Snp, sizeof (SNP_DRIVER));
Snp->PciIo = PciIo;
Snp->Signature = SNP_DRIVER_SIGNATURE;
EfiInitializeLock (&Snp->Lock, TPL_NOTIFY);
Snp->Snp.Revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
Snp->Snp.Start = SnpUndi32Start;
Snp->Snp.Stop = SnpUndi32Stop;
Snp->Snp.Initialize = SnpUndi32Initialize;
Snp->Snp.Reset = SnpUndi32Reset;
Snp->Snp.Shutdown = SnpUndi32Shutdown;
Snp->Snp.ReceiveFilters = SnpUndi32ReceiveFilters;
Snp->Snp.StationAddress = SnpUndi32StationAddress;
Snp->Snp.Statistics = SnpUndi32Statistics;
Snp->Snp.MCastIpToMac = SnpUndi32McastIpToMac;
Snp->Snp.NvData = SnpUndi32NvData;
Snp->Snp.GetStatus = SnpUndi32GetStatus;
Snp->Snp.Transmit = SnpUndi32Transmit;
Snp->Snp.Receive = SnpUndi32Receive;
Snp->Snp.WaitForPacket = NULL;
Snp->Snp.Mode = &Snp->Mode;
Snp->TxRxBufferSize = 0;
Snp->TxRxBuffer = NULL;
Snp->RecycledTxBuf = AllocatePool (sizeof (UINT64) * SNP_TX_BUFFER_INCREASEMENT);
if (Snp->RecycledTxBuf == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error_DeleteSNP;
}
Snp->MaxRecycledTxBuf = SNP_TX_BUFFER_INCREASEMENT;
Snp->RecycledTxBufCount = 0;
if (Nii->Revision >= EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_REVISION) {
Snp->IfNum = Nii->IfNum;
} else {
Snp->IfNum = (UINT8) (Nii->IfNum & 0xFF);
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_HW_UNDI) != 0) {
Snp->IsSwUndi = FALSE;
Snp->IssueUndi32Command = &IssueHwUndiCommand;
} else {
Snp->IsSwUndi = TRUE;
if ((Pxe->sw.Implementation & PXE_ROMID_IMP_SW_VIRT_ADDR) != 0) {
Snp->IssueUndi32Command = (ISSUE_UNDI32_COMMAND) (UINTN) Pxe->sw.EntryPoint;
} else {
Snp->IssueUndi32Command = (ISSUE_UNDI32_COMMAND) (UINTN) ((UINT8) (UINTN) Pxe + Pxe->sw.EntryPoint);
}
}
//
// Allocate a global CPB and DB buffer for this UNDI interface.
// we do this because:
//
// -UNDI 3.0 wants all the addresses passed to it (even the cpb and db) to be
// within 2GB limit, create them here and map them so that when undi calls
// v2p callback to check if the physical address is < 2gb, we will pass.
//
// -This is not a requirement for 3.1 or later UNDIs but the code looks
// simpler if we use the same cpb, db variables for both old and new undi
// interfaces from all the SNP interface calls (we don't map the buffers
// for the newer undi interfaces though)
// .
// -it is OK to allocate one global set of CPB, DB pair for each UNDI
// interface as EFI does not multi-task and so SNP will not be re-entered!
//
Status = PciIo->AllocateBuffer (
PciIo,
AllocateAnyPages,
EfiBootServicesData,
SNP_MEM_PAGES (4096),
&Address,
0
);
if (Status != EFI_SUCCESS) {
DEBUG ((EFI_D_NET, "\nCould not allocate CPB and DB structures.\n"));
goto Error_DeleteSNP;
}
Snp->Cpb = (VOID *) (UINTN) Address;
Snp->Db = (VOID *) ((UINTN) Address + 2048);
//
// Find the correct BAR to do IO.
//
// Enumerate through the PCI BARs for the device to determine which one is
// the IO BAR. Save the index of the BAR into the adapter info structure.
// for regular 32bit BARs, 0 is memory mapped, 1 is io mapped
//
Snp->MemoryBarIndex = 0;
Snp->IoBarIndex = 1;
FoundMemoryBar = FALSE;
FoundIoBar = FALSE;
for (BarIndex = 0; BarIndex < PCI_MAX_BAR; BarIndex++) {
Status = PciIo->GetBarAttributes (
PciIo,
BarIndex,
NULL,
(VOID**) &BarDesc
);
if (Status == EFI_UNSUPPORTED) {
continue;
} else if (EFI_ERROR (Status)) {
goto Error_DeleteSNP;
}
if ((!FoundMemoryBar) && (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM)) {
Snp->MemoryBarIndex = BarIndex;
FoundMemoryBar = TRUE;
} else if ((!FoundIoBar) && (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_IO)) {
Snp->IoBarIndex = BarIndex;
FoundIoBar = TRUE;
}
FreePool (BarDesc);
if (FoundMemoryBar && FoundIoBar) {
break;
}
}
Status = PxeStart (Snp);
if (Status != EFI_SUCCESS) {
goto Error_DeleteSNP;
}
Snp->Cdb.OpCode = PXE_OPCODE_GET_INIT_INFO;
Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
Snp->Cdb.CPBaddr = PXE_DBADDR_NOT_USED;
Snp->Cdb.DBsize = (UINT16) sizeof (Snp->InitInfo);
Snp->Cdb.DBaddr = (UINT64)(UINTN) (&Snp->InitInfo);
Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
Snp->Cdb.IFnum = Snp->IfNum;
Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
DEBUG ((EFI_D_NET, "\nSnp->undi.get_init_info() "));
(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
//
// Save the INIT Stat Code...
//
InitStatFlags = Snp->Cdb.StatFlags;
if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
DEBUG ((EFI_D_NET, "\nSnp->undi.init_info() %xh:%xh\n", Snp->Cdb.StatFlags, Snp->Cdb.StatCode));
PxeStop (Snp);
goto Error_DeleteSNP;
}
//
// Initialize simple network protocol mode structure
//
Snp->Mode.State = EfiSimpleNetworkStopped;
Snp->Mode.HwAddressSize = Snp->InitInfo.HWaddrLen;
Snp->Mode.MediaHeaderSize = Snp->InitInfo.MediaHeaderLen;
Snp->Mode.MaxPacketSize = Snp->InitInfo.FrameDataLen;
Snp->Mode.NvRamAccessSize = Snp->InitInfo.NvWidth;
Snp->Mode.NvRamSize = Snp->InitInfo.NvCount * Snp->Mode.NvRamAccessSize;
Snp->Mode.IfType = Snp->InitInfo.IFtype;
Snp->Mode.MaxMCastFilterCount = Snp->InitInfo.MCastFilterCnt;
Snp->Mode.MCastFilterCount = 0;
switch (InitStatFlags & PXE_STATFLAGS_CABLE_DETECT_MASK) {
case PXE_STATFLAGS_CABLE_DETECT_SUPPORTED:
Snp->CableDetectSupported = TRUE;
break;
case PXE_STATFLAGS_CABLE_DETECT_NOT_SUPPORTED:
default:
Snp->CableDetectSupported = FALSE;
}
switch (InitStatFlags & PXE_STATFLAGS_GET_STATUS_NO_MEDIA_MASK) {
case PXE_STATFLAGS_GET_STATUS_NO_MEDIA_SUPPORTED:
Snp->MediaStatusSupported = TRUE;
break;
case PXE_STATFLAGS_GET_STATUS_NO_MEDIA_NOT_SUPPORTED:
default:
Snp->MediaStatusSupported = FALSE;
}
if (Snp->CableDetectSupported || Snp->MediaStatusSupported) {
Snp->Mode.MediaPresentSupported = TRUE;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_STATION_ADDR_SETTABLE) != 0) {
Snp->Mode.MacAddressChangeable = TRUE;
} else {
Snp->Mode.MacAddressChangeable = FALSE;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_MULTI_FRAME_SUPPORTED) != 0) {
Snp->Mode.MultipleTxSupported = TRUE;
} else {
Snp->Mode.MultipleTxSupported = FALSE;
}
Snp->Mode.ReceiveFilterMask = EFI_SIMPLE_NETWORK_RECEIVE_UNICAST;
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_MULTICAST_RX_SUPPORTED) != 0) {
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_RX_SUPPORTED) != 0) {
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_BROADCAST_RX_SUPPORTED) != 0) {
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_FILTERED_MULTICAST_RX_SUPPORTED) != 0) {
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST;
}
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_MULTICAST_RX_SUPPORTED) != 0) {
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;
}
Snp->Mode.ReceiveFilterSetting = 0;
//
// need to get the station address to save in the mode structure. we need to
// initialize the UNDI first for this.
//
Snp->TxRxBufferSize = Snp->InitInfo.MemoryRequired;
Status = PxeInit (Snp, PXE_OPFLAGS_INITIALIZE_DO_NOT_DETECT_CABLE);
if (EFI_ERROR (Status)) {
PxeStop (Snp);
goto Error_DeleteSNP;
}
Status = PxeGetStnAddr (Snp);
if (Status != EFI_SUCCESS) {
DEBUG ((EFI_D_ERROR, "\nSnp->undi.get_station_addr() failed.\n"));
PxeShutdown (Snp);
PxeStop (Snp);
goto Error_DeleteSNP;
}
Snp->Mode.MediaPresent = FALSE;
//
// We should not leave UNDI started and initialized here. this DriverStart()
// routine must only find and attach the SNP interface to UNDI layer that it
// finds on the given handle!
// The UNDI layer will be started when upper layers call Snp->start.
// How ever, this DriverStart() must fill up the snp mode structure which
// contains the MAC address of the NIC. For this reason we started and
// initialized UNDI here, now we are done, do a shutdown and stop of the
// UNDI interface!
//
PxeShutdown (Snp);
PxeStop (Snp);
//
// Create EXIT_BOOT_SERIVES Event
//
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
SnpNotifyExitBootServices,
Snp,
&gEfiEventExitBootServicesGuid,
&Snp->ExitBootServicesEvent
);
if (EFI_ERROR (Status)) {
goto Error_DeleteSNP;
}
//
// add SNP to the undi handle
//
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiSimpleNetworkProtocolGuid,
EFI_NATIVE_INTERFACE,
&(Snp->Snp)
);
if (!EFI_ERROR (Status)) {
return Status;
}
PciIo->FreeBuffer (
PciIo,
SNP_MEM_PAGES (4096),
Snp->Cpb
);
Error_DeleteSNP:
if (Snp->RecycledTxBuf != NULL) {
FreePool (Snp->RecycledTxBuf);
}
PciIo->FreeBuffer (
PciIo,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
Snp
);
NiiError:
gBS->CloseProtocol (
Controller,
&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
This->DriverBindingHandle,
Controller
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// If we got here that means we are in error state.
//
if (!EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
}
return Status;
}
/**
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.
1. ControllerHandle must be a valid EFI_HANDLE.
2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
EFI_DEVICE_PATH_PROTOCOL.
3. 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
NvmExpressDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
NVME_CONTROLLER_PRIVATE_DATA *Private;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
UINT32 NamespaceId;
EFI_PHYSICAL_ADDRESS MappedAddr;
UINTN Bytes;
EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL *Passthru;
DEBUG ((EFI_D_INFO, "NvmExpressDriverBindingStart: start\n"));
Private = NULL;
Passthru = NULL;
ParentDevicePath = NULL;
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
return Status;
}
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
return Status;
}
//
// Check EFI_ALREADY_STARTED to reuse the original NVME_CONTROLLER_PRIVATE_DATA.
//
if (Status != EFI_ALREADY_STARTED) {
Private = AllocateZeroPool (sizeof (NVME_CONTROLLER_PRIVATE_DATA));
if (Private == NULL) {
DEBUG ((EFI_D_ERROR, "NvmExpressDriverBindingStart: allocating pool for Nvme Private Data failed!\n"));
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
//
// 6 x 4kB aligned buffers will be carved out of this buffer.
// 1st 4kB boundary is the start of the admin submission queue.
// 2nd 4kB boundary is the start of the admin completion queue.
// 3rd 4kB boundary is the start of I/O submission queue #1.
// 4th 4kB boundary is the start of I/O completion queue #1.
// 5th 4kB boundary is the start of I/O submission queue #2.
// 6th 4kB boundary is the start of I/O completion queue #2.
//
// Allocate 6 pages of memory, then map it for bus master read and write.
//
Status = PciIo->AllocateBuffer (
PciIo,
AllocateAnyPages,
EfiBootServicesData,
6,
(VOID**)&Private->Buffer,
0
);
if (EFI_ERROR (Status)) {
goto Exit;
}
Bytes = EFI_PAGES_TO_SIZE (6);
Status = PciIo->Map (
PciIo,
EfiPciIoOperationBusMasterCommonBuffer,
Private->Buffer,
&Bytes,
&MappedAddr,
&Private->Mapping
);
if (EFI_ERROR (Status) || (Bytes != EFI_PAGES_TO_SIZE (6))) {
goto Exit;
}
Private->BufferPciAddr = (UINT8 *)(UINTN)MappedAddr;
Private->Signature = NVME_CONTROLLER_PRIVATE_DATA_SIGNATURE;
Private->ControllerHandle = Controller;
Private->ImageHandle = This->DriverBindingHandle;
Private->DriverBindingHandle = This->DriverBindingHandle;
Private->PciIo = PciIo;
Private->ParentDevicePath = ParentDevicePath;
Private->Passthru.Mode = &Private->PassThruMode;
Private->Passthru.PassThru = NvmExpressPassThru;
Private->Passthru.GetNextNamespace = NvmExpressGetNextNamespace;
Private->Passthru.BuildDevicePath = NvmExpressBuildDevicePath;
Private->Passthru.GetNamespace = NvmExpressGetNamespace;
CopyMem (&Private->PassThruMode, &gEfiNvmExpressPassThruMode, sizeof (EFI_NVM_EXPRESS_PASS_THRU_MODE));
InitializeListHead (&Private->AsyncPassThruQueue);
InitializeListHead (&Private->UnsubmittedSubtasks);
Status = NvmeControllerInit (Private);
if (EFI_ERROR(Status)) {
goto Exit;
}
//
// Start the asynchronous I/O completion monitor
//
Status = gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
ProcessAsyncTaskList,
Private,
&Private->TimerEvent
);
if (EFI_ERROR (Status)) {
goto Exit;
}
Status = gBS->SetTimer (
Private->TimerEvent,
TimerPeriodic,
NVME_HC_ASYNC_TIMER
);
if (EFI_ERROR (Status)) {
goto Exit;
}
Status = gBS->InstallMultipleProtocolInterfaces (
&Controller,
&gEfiNvmExpressPassThruProtocolGuid,
&Private->Passthru,
NULL
);
if (EFI_ERROR (Status)) {
goto Exit;
}
NvmeRegisterShutdownNotification ();
} else {
Status = gBS->OpenProtocol (
Controller,
&gEfiNvmExpressPassThruProtocolGuid,
(VOID **) &Passthru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
goto Exit;
}
Private = NVME_CONTROLLER_PRIVATE_DATA_FROM_PASS_THRU (Passthru);
}
if (RemainingDevicePath == NULL) {
//
// Enumerate all NVME namespaces in the controller
//
Status = DiscoverAllNamespaces (
Private
);
} else if (!IsDevicePathEnd (RemainingDevicePath)) {
//
// Enumerate the specified NVME namespace
//
Status = Private->Passthru.GetNamespace (
&Private->Passthru,
RemainingDevicePath,
&NamespaceId
);
if (!EFI_ERROR (Status)) {
Status = EnumerateNvmeDevNamespace (
Private,
NamespaceId
);
}
}
DEBUG ((EFI_D_INFO, "NvmExpressDriverBindingStart: end successfully\n"));
return EFI_SUCCESS;
Exit:
if ((Private != NULL) && (Private->Mapping != NULL)) {
PciIo->Unmap (PciIo, Private->Mapping);
}
if ((Private != NULL) && (Private->Buffer != NULL)) {
PciIo->FreeBuffer (PciIo, 6, Private->Buffer);
}
if ((Private != NULL) && (Private->ControllerData != NULL)) {
FreePool (Private->ControllerData);
}
if (Private != NULL) {
if (Private->TimerEvent != NULL) {
gBS->CloseEvent (Private->TimerEvent);
}
FreePool (Private);
}
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
DEBUG ((EFI_D_INFO, "NvmExpressDriverBindingStart: end with %r\n", Status));
return Status;
}