/** @file
Declaration of structures and functions for SnpDxe driver.
Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _SNP_H_
#define _SNP_H_
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define FOUR_GIGABYTES (UINT64) 0x100000000ULL
#define SNP_DRIVER_SIGNATURE SIGNATURE_32 ('s', 'n', 'd', 's')
#define MAX_MAP_LENGTH 100
#define PCI_BAR_IO_MASK 0x00000003
#define PCI_BAR_IO_MODE 0x00000001
#define PCI_BAR_MEM_MASK 0x0000000F
#define PCI_BAR_MEM_MODE 0x00000000
#define PCI_BAR_MEM_64BIT 0x00000004
#define SNP_TX_BUFFER_INCREASEMENT MAX_XMIT_BUFFERS
#define SNP_MAX_TX_BUFFER_NUM 65536
typedef
EFI_STATUS
(EFIAPI *ISSUE_UNDI32_COMMAND) (
UINT64 Cdb
);
typedef struct {
UINT32 Signature;
EFI_LOCK Lock;
EFI_SIMPLE_NETWORK_PROTOCOL Snp;
EFI_SIMPLE_NETWORK_MODE Mode;
EFI_HANDLE DeviceHandle;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
//
// Local instance data needed by SNP driver
//
// Pointer to S/W UNDI API entry point
// This will be NULL for H/W UNDI
//
ISSUE_UNDI32_COMMAND IssueUndi32Command;
BOOLEAN IsSwUndi;
//
// undi interface number, if one undi manages more nics
//
PXE_IFNUM IfNum;
//
// Allocated tx/rx buffer that was passed to UNDI Initialize.
//
UINT32 TxRxBufferSize;
VOID *TxRxBuffer;
//
// mappable buffers for receive and fill header for undi3.0
// these will be used if the user buffers are above 4GB limit (instead of
// mapping the user buffers)
//
UINT8 *ReceiveBufffer;
VOID *ReceiveBufferUnmap;
UINT8 *FillHeaderBuffer;
VOID *FillHeaderBufferUnmap;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT8 IoBarIndex;
UINT8 MemoryBarIndex;
//
// Buffers for command descriptor block, command parameter block
// and data block.
//
PXE_CDB Cdb;
VOID *Cpb;
VOID *CpbUnmap;
VOID *Db;
//
// UNDI structure, we need to remember the init info for a long time!
//
PXE_DB_GET_INIT_INFO InitInfo;
VOID *SnpDriverUnmap;
//
// when ever we map an address, we must remember it's address and the un-map
// cookie so that we can unmap later
//
struct MAP_LIST {
EFI_PHYSICAL_ADDRESS VirtualAddress;
VOID *MapCookie;
} MapList[MAX_MAP_LENGTH];
EFI_EVENT ExitBootServicesEvent;
//
// Whether UNDI support reporting media status from GET_STATUS command,
// i.e. PXE_STATFLAGS_GET_STATUS_NO_MEDIA_SUPPORTED or
// PXE_STATFLAGS_GET_STATUS_NO_MEDIA_NOT_SUPPORTED
//
BOOLEAN MediaStatusSupported;
//
// Whether UNDI support cable detect for INITIALIZE command,
// i.e. PXE_STATFLAGS_CABLE_DETECT_SUPPORTED or
// PXE_STATFLAGS_CABLE_DETECT_NOT_SUPPORTED
//
BOOLEAN CableDetectSupported;
//
// Array of the recycled transmit buffer address from UNDI.
//
UINT64 *RecycledTxBuf;
//
// The maximum number of recycled buffer pointers in RecycledTxBuf.
//
UINT32 MaxRecycledTxBuf;
//
// Current number of recycled buffer pointers in RecycledTxBuf.
//
UINT32 RecycledTxBufCount;
} SNP_DRIVER;
#define EFI_SIMPLE_NETWORK_DEV_FROM_THIS(a) CR (a, SNP_DRIVER, Snp, SNP_DRIVER_SIGNATURE)
//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gSimpleNetworkDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gSimpleNetworkComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gSimpleNetworkComponentName2;
/**
this routine calls undi to start the interface and changes the snp state.
@param Snp pointer to snp driver structure
@retval EFI_DEVICE_ERROR UNDI could not be started
@retval EFI_SUCCESS UNDI is started successfully
**/
EFI_STATUS
PxeStart (
IN SNP_DRIVER *Snp
);
/**
this routine calls undi to stop the interface and changes the snp state.
@param Snp pointer to snp driver structure
@retval EFI_INVALID_PARAMETER invalid parameter
@retval EFI_NOT_STARTED SNP is not started
@retval EFI_DEVICE_ERROR SNP is not initialized
@retval EFI_UNSUPPORTED operation unsupported
**/
EFI_STATUS
PxeStop (
SNP_DRIVER *Snp
);
/**
this routine calls undi to initialize the interface.
@param Snp pointer to snp driver structure
@param CableDetectFlag Do/don't detect the cable (depending on what undi supports)
@retval EFI_SUCCESS UNDI is initialized successfully
@retval EFI_DEVICE_ERROR UNDI could not be initialized
@retval Other other errors
**/
EFI_STATUS
PxeInit (
SNP_DRIVER *Snp,
UINT16 CableDetectFlag
);
/**
this routine calls undi to shut down the interface.
@param Snp pointer to snp driver structure
@retval EFI_SUCCESS UNDI is shut down successfully
@retval EFI_DEVICE_ERROR UNDI could not be shut down
**/
EFI_STATUS
PxeShutdown (
IN SNP_DRIVER *Snp
);
/**
this routine calls undi to read the MAC address of the NIC and updates the
mode structure with the address.
@param Snp pointer to snp driver structure.
@retval EFI_SUCCESS the MAC address of the NIC is read successfully.
@retval EFI_DEVICE_ERROR failed to read the MAC address of the NIC.
**/
EFI_STATUS
PxeGetStnAddr (
SNP_DRIVER *Snp
);
/**
Call undi to get the status of the interrupts, get the list of recycled transmit
buffers that completed transmitting. The recycled transmit buffer address will
be saved into Snp->RecycledTxBuf. This function will also update the MediaPresent
field of EFI_SIMPLE_NETWORK_MODE if UNDI support it.
@param[in] Snp Pointer to snp driver structure.
@param[out] InterruptStatusPtr A non null pointer to contain the interrupt
status.
@param[in] GetTransmittedBuf Set to TRUE to retrieve the recycled transmit
buffer address.
@retval EFI_SUCCESS The status of the network interface was retrieved.
@retval EFI_DEVICE_ERROR The command could not be sent to the network
interface.
**/
EFI_STATUS
PxeGetStatus (
IN SNP_DRIVER *Snp,
OUT UINT32 *InterruptStatusPtr,
IN BOOLEAN GetTransmittedBuf
);
/**
This is a callback routine supplied to UNDI3.1 at undi_start time.
UNDI call this routine when it wants to have exclusive access to a critical
section of the code/data.
New callbacks for 3.1:
there won't be a virtual2physical callback for UNDI 3.1 because undi3.1 uses
the MemMap call to map the required address by itself!
@param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to
store Undi interface context (Undi does not read or write
this variable)
@param Enable non-zero indicates acquire
zero indicates release
**/
VOID
EFIAPI
SnpUndi32CallbackBlock (
IN UINT64 UniqueId,
IN UINT32 Enable
);
/**
This is a callback routine supplied to UNDI at undi_start time.
UNDI call this routine with the number of micro seconds when it wants to
pause.
@param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to
store Undi interface context (Undi does not read or write
this variable)
@param MicroSeconds number of micro seconds to pause, usually multiple of 10.
**/
VOID
EFIAPI
SnpUndi32CallbackDelay (
IN UINT64 UniqueId,
IN UINT64 MicroSeconds
);
/**
This is a callback routine supplied to UNDI at undi_start time.
This is the IO routine for UNDI3.1 to start CPB.
@param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this
to store Undi interface context (Undi does not read or
write this variable)
@param ReadOrWrite indicates read or write, IO or Memory.
@param NumBytes number of bytes to read or write.
@param MemOrPortAddr IO or memory address to read from or write to.
@param BufferPtr memory location to read into or that contains the bytes
to write.
**/
VOID
EFIAPI
SnpUndi32CallbackMemio (
IN UINT64 UniqueId,
IN UINT8 ReadOrWrite,
IN UINT8 NumBytes,
IN UINT64 MemOrPortAddr,
IN OUT UINT64 BufferPtr
);
/**
This is a callback routine supplied to UNDI at undi_start time.
UNDI call this routine when it has to map a CPU address to a device
address.
@param UniqueId - This was supplied to UNDI at Undi_Start, SNP uses this to store
Undi interface context (Undi does not read or write this variable)
@param CpuAddr - Virtual address to be mapped!
@param NumBytes - size of memory to be mapped
@param Direction - direction of data flow for this memory's usage:
cpu->device, device->cpu or both ways
@param DeviceAddrPtr - pointer to return the mapped device address
**/
VOID
EFIAPI
SnpUndi32CallbackMap (
IN UINT64 UniqueId,
IN UINT64 CpuAddr,
IN UINT32 NumBytes,
IN UINT32 Direction,
IN OUT UINT64 DeviceAddrPtr
);
/**
This is a callback routine supplied to UNDI at undi_start time.
UNDI call this routine when it wants to unmap an address that was previously
mapped using map callback.
@param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to store.
Undi interface context (Undi does not read or write this variable)
@param CpuAddr Virtual address that was mapped!
@param NumBytes size of memory mapped
@param Direction direction of data flow for this memory's usage:
cpu->device, device->cpu or both ways
@param DeviceAddr the mapped device address
**/
VOID
EFIAPI
SnpUndi32CallbackUnmap (
IN UINT64 UniqueId,
IN UINT64 CpuAddr,
IN UINT32 NumBytes,
IN UINT32 Direction,
IN UINT64 DeviceAddr
);
/**
This is a callback routine supplied to UNDI at undi_start time.
UNDI call this routine when it wants synchronize the virtual buffer contents
with the mapped buffer contents. The virtual and mapped buffers need not
correspond to the same physical memory (especially if the virtual address is
> 4GB). Depending on the direction for which the buffer is mapped, undi will
need to synchronize their contents whenever it writes to/reads from the buffer
using either the cpu address or the device address.
EFI does not provide a sync call, since virt=physical, we should just do
the synchronization ourself here!
@param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to store
Undi interface context (Undi does not read or write this variable)
@param CpuAddr Virtual address that was mapped!
@param NumBytes size of memory mapped.
@param Direction direction of data flow for this memory's usage:
cpu->device, device->cpu or both ways.
@param DeviceAddr the mapped device address.
**/
VOID
EFIAPI
SnpUndi32CallbackSync (
IN UINT64 UniqueId,
IN UINT64 CpuAddr,
IN UINT32 NumBytes,
IN UINT32 Direction,
IN UINT64 DeviceAddr
);
/**
Changes the state of a network interface from "stopped" to "started".
This function starts a network interface. If the network interface successfully
starts, then EFI_SUCCESS will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@retval EFI_SUCCESS The network interface was started.
@retval EFI_ALREADY_STARTED The network interface is already in the started state.
@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
@retval EFI_UNSUPPORTED This function is not supported by the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Start (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
);
/**
Changes the state of a network interface from "started" to "stopped".
This function stops a network interface. This call is only valid if the network
interface is in the started state. If the network interface was successfully
stopped, then EFI_SUCCESS will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@retval EFI_SUCCESS The network interface was stopped.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
@retval EFI_UNSUPPORTED This function is not supported by the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Stop (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
);
/**
Resets a network adapter and allocates the transmit and receive buffers
required by the network interface; optionally, also requests allocation of
additional transmit and receive buffers.
This function allocates the transmit and receive buffers required by the network
interface. If this allocation fails, then EFI_OUT_OF_RESOURCES is returned.
If the allocation succeeds and the network interface is successfully initialized,
then EFI_SUCCESS will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param ExtraRxBufferSize The size, in bytes, of the extra receive buffer space
that the driver should allocate for the network interface.
Some network interfaces will not be able to use the
extra buffer, and the caller will not know if it is
actually being used.
@param ExtraTxBufferSize The size, in bytes, of the extra transmit buffer space
that the driver should allocate for the network interface.
Some network interfaces will not be able to use the
extra buffer, and the caller will not know if it is
actually being used.
@retval EFI_SUCCESS The network interface was initialized.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_OUT_OF_RESOURCES There was not enough memory for the transmit and
receive buffers.
@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
@retval EFI_UNSUPPORTED The increased buffer size feature is not supported.
**/
EFI_STATUS
EFIAPI
SnpUndi32Initialize (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN UINTN ExtraRxBufferSize OPTIONAL,
IN UINTN ExtraTxBufferSize OPTIONAL
);
/**
Resets a network adapter and reinitializes it with the parameters that were
provided in the previous call to Initialize().
This function resets a network adapter and reinitializes it with the parameters
that were provided in the previous call to Initialize(). The transmit and
receive queues are emptied and all pending interrupts are cleared.
Receive filters, the station address, the statistics, and the multicast-IP-to-HW
MAC addresses are not reset by this call. If the network interface was
successfully reset, then EFI_SUCCESS will be returned. If the driver has not
been initialized, EFI_DEVICE_ERROR will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param ExtendedVerification Indicates that the driver may perform a more
exhaustive verification operation of the device
during reset.
@retval EFI_SUCCESS The network interface was reset.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
@retval EFI_UNSUPPORTED This function is not supported by the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Reset (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
);
/**
Resets a network adapter and leaves it in a state that is safe for another
driver to initialize.
This function releases the memory buffers assigned in the Initialize() call.
Pending transmits and receives are lost, and interrupts are cleared and disabled.
After this call, only the Initialize() and Stop() calls may be used. If the
network interface was successfully shutdown, then EFI_SUCCESS will be returned.
If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@retval EFI_SUCCESS The network interface was shutdown.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Shutdown (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
);
/**
Manages the multicast receive filters of a network interface.
This function is used enable and disable the hardware and software receive
filters for the underlying network device.
The receive filter change is broken down into three steps:
* The filter mask bits that are set (ON) in the Enable parameter are added to
the current receive filter settings.
* The filter mask bits that are set (ON) in the Disable parameter are subtracted
from the updated receive filter settings.
* If the resulting receive filter setting is not supported by the hardware a
more liberal setting is selected.
If the same bits are set in the Enable and Disable parameters, then the bits
in the Disable parameter takes precedence.
If the ResetMCastFilter parameter is TRUE, then the multicast address list
filter is disabled (irregardless of what other multicast bits are set in the
Enable and Disable parameters). The SNP->Mode->MCastFilterCount field is set
to zero. The Snp->Mode->MCastFilter contents are undefined.
After enabling or disabling receive filter settings, software should verify
the new settings by checking the Snp->Mode->ReceiveFilterSettings,
Snp->Mode->MCastFilterCount and Snp->Mode->MCastFilter fields.
Note: Some network drivers and/or devices will automatically promote receive
filter settings if the requested setting can not be honored. For example, if
a request for four multicast addresses is made and the underlying hardware
only supports two multicast addresses the driver might set the promiscuous
or promiscuous multicast receive filters instead. The receiving software is
responsible for discarding any extra packets that get through the hardware
receive filters.
Note: Note: To disable all receive filter hardware, the network driver must
be Shutdown() and Stopped(). Calling ReceiveFilters() with Disable set to
Snp->Mode->ReceiveFilterSettings will make it so no more packets are
returned by the Receive() function, but the receive hardware may still be
moving packets into system memory before inspecting and discarding them.
Unexpected system errors, reboots and hangs can occur if an OS is loaded
and the network devices are not Shutdown() and Stopped().
If ResetMCastFilter is TRUE, then the multicast receive filter list on the
network interface will be reset to the default multicast receive filter list.
If ResetMCastFilter is FALSE, and this network interface allows the multicast
receive filter list to be modified, then the MCastFilterCnt and MCastFilter
are used to update the current multicast receive filter list. The modified
receive filter list settings can be found in the MCastFilter field of
EFI_SIMPLE_NETWORK_MODE. If the network interface does not allow the multicast
receive filter list to be modified, then EFI_INVALID_PARAMETER will be returned.
If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
If the receive filter mask and multicast receive filter list have been
successfully updated on the network interface, EFI_SUCCESS will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param Enable A bit mask of receive filters to enable on the network
interface.
@param Disable A bit mask of receive filters to disable on the network
interface. For backward compatibility with EFI 1.1
platforms, the EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST bit
must be set when the ResetMCastFilter parameter is TRUE.
@param ResetMCastFilter Set to TRUE to reset the contents of the multicast
receive filters on the network interface to their
default values.
@param MCastFilterCnt Number of multicast HW MAC addresses in the new MCastFilter
list. This value must be less than or equal to the
MCastFilterCnt field of EFI_SIMPLE_NETWORK_MODE.
This field is optional if ResetMCastFilter is TRUE.
@param MCastFilter A pointer to a list of new multicast receive filter HW
MAC addresses. This list will replace any existing
multicast HW MAC address list. This field is optional
if ResetMCastFilter is TRUE.
@retval EFI_SUCCESS The multicast receive filter list was updated.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
* This is NULL
* There are bits set in Enable that are not set
in Snp->Mode->ReceiveFilterMask
* There are bits set in Disable that are not set
in Snp->Mode->ReceiveFilterMask
* Multicast is being enabled (the
EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST bit is
set in Enable, it is not set in Disable, and
ResetMCastFilter is FALSE) and MCastFilterCount
is zero
* Multicast is being enabled and MCastFilterCount
is greater than Snp->Mode->MaxMCastFilterCount
* Multicast is being enabled and MCastFilter is NULL
* Multicast is being enabled and one or more of
the addresses in the MCastFilter list are not
valid multicast MAC addresses
@retval EFI_DEVICE_ERROR One or more of the following conditions is TRUE:
* The network interface has been started but has
not been initialized
* An unexpected error was returned by the
underlying network driver or device
@retval EFI_UNSUPPORTED This function is not supported by the network
interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32ReceiveFilters (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN UINT32 Enable,
IN UINT32 Disable,
IN BOOLEAN ResetMCastFilter,
IN UINTN MCastFilterCnt, OPTIONAL
IN EFI_MAC_ADDRESS *MCastFilter OPTIONAL
);
/**
Modifies or resets the current station address, if supported.
This function modifies or resets the current station address of a network
interface, if supported. If Reset is TRUE, then the current station address is
set to the network interface's permanent address. If Reset is FALSE, and the
network interface allows its station address to be modified, then the current
station address is changed to the address specified by New. If the network
interface does not allow its station address to be modified, then
EFI_INVALID_PARAMETER will be returned. If the station address is successfully
updated on the network interface, EFI_SUCCESS will be returned. If the driver
has not been initialized, EFI_DEVICE_ERROR will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param Reset Flag used to reset the station address to the network interface's
permanent address.
@param New New station address to be used for the network interface.
@retval EFI_SUCCESS The network interface's station address was updated.
@retval EFI_NOT_STARTED The Simple Network Protocol interface has not been
started by calling Start().
@retval EFI_INVALID_PARAMETER The New station address was not accepted by the NIC.
@retval EFI_INVALID_PARAMETER Reset is FALSE and New is NULL.
@retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not
been initialized by calling Initialize().
@retval EFI_DEVICE_ERROR An error occurred attempting to set the new
station address.
@retval EFI_UNSUPPORTED The NIC does not support changing the network
interface's station address.
**/
EFI_STATUS
EFIAPI
SnpUndi32StationAddress (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN Reset,
IN EFI_MAC_ADDRESS *New OPTIONAL
);
/**
Resets or collects the statistics on a network interface.
This function resets or collects the statistics on a network interface. If the
size of the statistics table specified by StatisticsSize is not big enough for
all the statistics that are collected by the network interface, then a partial
buffer of statistics is returned in StatisticsTable, StatisticsSize is set to
the size required to collect all the available statistics, and
EFI_BUFFER_TOO_SMALL is returned.
If StatisticsSize is big enough for all the statistics, then StatisticsTable
will be filled, StatisticsSize will be set to the size of the returned
StatisticsTable structure, and EFI_SUCCESS is returned.
If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
If Reset is FALSE, and both StatisticsSize and StatisticsTable are NULL, then
no operations will be performed, and EFI_SUCCESS will be returned.
If Reset is TRUE, then all of the supported statistics counters on this network
interface will be reset to zero.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param Reset Set to TRUE to reset the statistics for the network interface.
@param StatisticsSize On input the size, in bytes, of StatisticsTable. On output
the size, in bytes, of the resulting table of statistics.
@param StatisticsTable A pointer to the EFI_NETWORK_STATISTICS structure that
contains the statistics. Type EFI_NETWORK_STATISTICS is
defined in "Related Definitions" below.
@retval EFI_SUCCESS The requested operation succeeded.
@retval EFI_NOT_STARTED The Simple Network Protocol interface has not been
started by calling Start().
@retval EFI_BUFFER_TOO_SMALL StatisticsSize is not NULL and StatisticsTable is
NULL. The current buffer size that is needed to
hold all the statistics is returned in StatisticsSize.
@retval EFI_BUFFER_TOO_SMALL StatisticsSize is not NULL and StatisticsTable is
not NULL. The current buffer size that is needed
to hold all the statistics is returned in
StatisticsSize. A partial set of statistics is
returned in StatisticsTable.
@retval EFI_INVALID_PARAMETER StatisticsSize is NULL and StatisticsTable is not
NULL.
@retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not
been initialized by calling Initialize().
@retval EFI_DEVICE_ERROR An error was encountered collecting statistics
from the NIC.
@retval EFI_UNSUPPORTED The NIC does not support collecting statistics
from the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Statistics (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN Reset,
IN OUT UINTN *StatisticsSize, OPTIONAL
IN OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL
);
/**
Converts a multicast IP address to a multicast HW MAC address.
This function converts a multicast IP address to a multicast HW MAC address
for all packet transactions. If the mapping is accepted, then EFI_SUCCESS will
be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param IPv6 Set to TRUE if the multicast IP address is IPv6 [RFC 2460].
Set to FALSE if the multicast IP address is IPv4 [RFC 791].
@param IP The multicast IP address that is to be converted to a multicast
HW MAC address.
@param MAC The multicast HW MAC address that is to be generated from IP.
@retval EFI_SUCCESS The multicast IP address was mapped to the
multicast HW MAC address.
@retval EFI_NOT_STARTED The Simple Network Protocol interface has not
been started by calling Start().
@retval EFI_INVALID_PARAMETER IP is NULL.
@retval EFI_INVALID_PARAMETER MAC is NULL.
@retval EFI_INVALID_PARAMETER IP does not point to a valid IPv4 or IPv6
multicast address.
@retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not
been initialized by calling Initialize().
@retval EFI_UNSUPPORTED IPv6 is TRUE and the implementation does not
support IPv6 multicast to MAC address conversion.
**/
EFI_STATUS
EFIAPI
SnpUndi32McastIpToMac (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN IPv6,
IN EFI_IP_ADDRESS *IP,
OUT EFI_MAC_ADDRESS *MAC
);
/**
Performs read and write operations on the NVRAM device attached to a network
interface.
This function performs read and write operations on the NVRAM device attached
to a network interface. If ReadWrite is TRUE, a read operation is performed.
If ReadWrite is FALSE, a write operation is performed. Offset specifies the
byte offset at which to start either operation. Offset must be a multiple of
NvRamAccessSize , and it must have a value between zero and NvRamSize.
BufferSize specifies the length of the read or write operation. BufferSize must
also be a multiple of NvRamAccessSize, and Offset + BufferSize must not exceed
NvRamSize.
If any of the above conditions is not met, then EFI_INVALID_PARAMETER will be
returned.
If all the conditions are met and the operation is "read," the NVRAM device
attached to the network interface will be read into Buffer and EFI_SUCCESS
will be returned. If this is a write operation, the contents of Buffer will be
used to update the contents of the NVRAM device attached to the network
interface and EFI_SUCCESS will be returned.
It does the basic checking on the input parameters and retrieves snp structure
and then calls the read_nvdata() call which does the actual reading
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param ReadWrite TRUE for read operations, FALSE for write operations.
@param Offset Byte offset in the NVRAM device at which to start the read or
write operation. This must be a multiple of NvRamAccessSize
and less than NvRamSize. (See EFI_SIMPLE_NETWORK_MODE)
@param BufferSize The number of bytes to read or write from the NVRAM device.
This must also be a multiple of NvramAccessSize.
@param Buffer A pointer to the data buffer.
@retval EFI_SUCCESS The NVRAM access was performed.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
* The This parameter is NULL
* The This parameter does not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure
* The Offset parameter is not a multiple of
EFI_SIMPLE_NETWORK_MODE.NvRamAccessSize
* The Offset parameter is not less than
EFI_SIMPLE_NETWORK_MODE.NvRamSize
* The BufferSize parameter is not a multiple of
EFI_SIMPLE_NETWORK_MODE.NvRamAccessSize
* The Buffer parameter is NULL
@retval EFI_DEVICE_ERROR The command could not be sent to the network
interface.
@retval EFI_UNSUPPORTED This function is not supported by the network
interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32NvData (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN ReadWrite,
IN UINTN Offset,
IN UINTN BufferSize,
IN OUT VOID *Buffer
);
/**
Reads the current interrupt status and recycled transmit buffer status from a
network interface.
This function gets the current interrupt and recycled transmit buffer status
from the network interface. The interrupt status is returned as a bit mask in
InterruptStatus. If InterruptStatus is NULL, the interrupt status will not be
read. If TxBuf is not NULL, a recycled transmit buffer address will be retrieved.
If a recycled transmit buffer address is returned in TxBuf, then the buffer has
been successfully transmitted, and the status for that buffer is cleared. If
the status of the network interface is successfully collected, EFI_SUCCESS
will be returned. If the driver has not been initialized, EFI_DEVICE_ERROR will
be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param InterruptStatus A pointer to the bit mask of the currently active
interrupts (see "Related Definitions"). If this is NULL,
the interrupt status will not be read from the device.
If this is not NULL, the interrupt status will be read
from the device. When the interrupt status is read, it
will also be cleared. Clearing the transmit interrupt does
not empty the recycled transmit buffer array.
@param TxBuf Recycled transmit buffer address. The network interface
will not transmit if its internal recycled transmit
buffer array is full. Reading the transmit buffer does
not clear the transmit interrupt. If this is NULL, then
the transmit buffer status will not be read. If there
are no transmit buffers to recycle and TxBuf is not NULL,
TxBuf will be set to NULL.
@retval EFI_SUCCESS The status of the network interface was retrieved.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
@retval EFI_DEVICE_ERROR The command could not be sent to the network
interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32GetStatus (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
OUT UINT32 *InterruptStatus, OPTIONAL
OUT VOID **TxBuf OPTIONAL
);
/**
Places a packet in the transmit queue of a network interface.
This function places the packet specified by Header and Buffer on the transmit
queue. If HeaderSize is nonzero and HeaderSize is not equal to
This->Mode->MediaHeaderSize, then EFI_INVALID_PARAMETER will be returned. If
BufferSize is less than This->Mode->MediaHeaderSize, then EFI_BUFFER_TOO_SMALL
will be returned. If Buffer is NULL, then EFI_INVALID_PARAMETER will be
returned. If HeaderSize is nonzero and DestAddr or Protocol is NULL, then
EFI_INVALID_PARAMETER will be returned. If the transmit engine of the network
interface is busy, then EFI_NOT_READY will be returned. If this packet can be
accepted by the transmit engine of the network interface, the packet contents
specified by Buffer will be placed on the transmit queue of the network
interface, and EFI_SUCCESS will be returned. GetStatus() can be used to
determine when the packet has actually been transmitted. The contents of the
Buffer must not be modified until the packet has actually been transmitted.
The Transmit() function performs nonblocking I/O. A caller who wants to perform
blocking I/O, should call Transmit(), and then GetStatus() until the
transmitted buffer shows up in the recycled transmit buffer.
If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param HeaderSize The size, in bytes, of the media header to be filled in by the
Transmit() function. If HeaderSize is nonzero, then it must
be equal to This->Mode->MediaHeaderSize and the DestAddr and
Protocol parameters must not be NULL.
@param BufferSize The size, in bytes, of the entire packet (media header and
data) to be transmitted through the network interface.
@param Buffer A pointer to the packet (media header followed by data) to be
transmitted. This parameter cannot be NULL. If HeaderSize is
zero, then the media header in Buffer must already be filled
in by the caller. If HeaderSize is nonzero, then the media
header will be filled in by the Transmit() function.
@param SrcAddr The source HW MAC address. If HeaderSize is zero, then this
parameter is ignored. If HeaderSize is nonzero and SrcAddr
is NULL, then This->Mode->CurrentAddress is used for the
source HW MAC address.
@param DestAddr The destination HW MAC address. If HeaderSize is zero, then
this parameter is ignored.
@param Protocol The type of header to build. If HeaderSize is zero, then this
parameter is ignored. See RFC 1700, section "Ether Types,"
for examples.
@retval EFI_SUCCESS The packet was placed on the transmit queue.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_NOT_READY The network interface is too busy to accept this
transmit request.
@retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.
@retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported
value.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
@retval EFI_UNSUPPORTED This function is not supported by the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Transmit (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN UINTN HeaderSize,
IN UINTN BufferSize,
IN VOID *Buffer,
IN EFI_MAC_ADDRESS *SrcAddr, OPTIONAL
IN EFI_MAC_ADDRESS *DestAddr, OPTIONAL
IN UINT16 *Protocol OPTIONAL
);
/**
Receives a packet from a network interface.
This function retrieves one packet from the receive queue of a network interface.
If there are no packets on the receive queue, then EFI_NOT_READY will be
returned. If there is a packet on the receive queue, and the size of the packet
is smaller than BufferSize, then the contents of the packet will be placed in
Buffer, and BufferSize will be updated with the actual size of the packet.
In addition, if SrcAddr, DestAddr, and Protocol are not NULL, then these values
will be extracted from the media header and returned. EFI_SUCCESS will be
returned if a packet was successfully received.
If BufferSize is smaller than the received packet, then the size of the receive
packet will be placed in BufferSize and EFI_BUFFER_TOO_SMALL will be returned.
If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
@param HeaderSize The size, in bytes, of the media header received on the network
interface. If this parameter is NULL, then the media header size
will not be returned.
@param BufferSize On entry, the size, in bytes, of Buffer. On exit, the size, in
bytes, of the packet that was received on the network interface.
@param Buffer A pointer to the data buffer to receive both the media
header and the data.
@param SrcAddr The source HW MAC address. If this parameter is NULL, the HW
MAC source address will not be extracted from the media header.
@param DestAddr The destination HW MAC address. If this parameter is NULL,
the HW MAC destination address will not be extracted from
the media header.
@param Protocol The media header type. If this parameter is NULL, then the
protocol will not be extracted from the media header. See
RFC 1700 section "Ether Types" for examples.
@retval EFI_SUCCESS The received data was stored in Buffer, and
BufferSize has been updated to the number of
bytes received.
@retval EFI_NOT_STARTED The network interface has not been started.
@retval EFI_NOT_READY No packets have been received on the network interface.
@retval EFI_BUFFER_TOO_SMALL BufferSize is too small for the received packets.
BufferSize has been updated to the required size.
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
* The This parameter is NULL
* The This parameter does not point to a valid
EFI_SIMPLE_NETWORK_PROTOCOL structure.
* The BufferSize parameter is NULL
* The Buffer parameter is NULL
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
**/
EFI_STATUS
EFIAPI
SnpUndi32Receive (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
OUT UINTN *HeaderSize OPTIONAL,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer,
OUT EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
OUT EFI_MAC_ADDRESS *DestAddr OPTIONAL,
OUT UINT16 *Protocol OPTIONAL
);
/**
Notification call back function for WaitForPacket event.
@param Event EFI Event.
@param SnpPtr Pointer to SNP_DRIVER structure.
**/
VOID
EFIAPI
SnpWaitForPacketNotify (
EFI_EVENT Event,
VOID *SnpPtr
);
#define SNP_MEM_PAGES(x) (((x) - 1) / 4096 + 1)
#endif /* _SNP_H_ */