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1. Use the PciIo->GetBarAttributes to find the logical bar index of the memory mapped bar and IO mapped bar. 

2. Remove unused code for undi 3.0.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu, Siyuan <siyuan.fu@intel.com>
Reviewed-By: Ye, Ting (ting.ye@intel.com)
Reviewed-By: Ni, Ruiyu <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16104 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Fu, Siyuan 2014-09-15 03:37:58 +00:00 committed by sfu5
parent 6c22c0a35d
commit c4a7d20890
3 changed files with 74 additions and 630 deletions
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216
MdeModulePkg/Universal/Network/SnpDxe/Callback.c
View File

@ -1,9 +1,9 @@
/** @file
This file contains two sets of callback routines for undi3.0 and undi3.1.
This file contains the callback routines for undi3.1.
the callback routines for Undi3.1 have an extra parameter UniqueId which
stores the interface context for the NIC that snp is trying to talk.
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
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
@ -16,218 +16,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include "Snp.h"
//
// Global variables
// these 2 global variables are used only for 3.0 undi. we could not place
// them in the snp structure because we will not know which snp structure
// in the callback context!
//
BOOLEAN mInitializeLock = TRUE;
EFI_LOCK mLock;
//
// End Global variables
//
extern EFI_PCI_IO_PROTOCOL *mPciIo;
/**
Convert a virtual or CPU address provided by SNP to a physical or device
address.
This is a callback routine supplied to UNDI at undi_start time. Since EFI uses
the identical mapping, this routine returns the physical address same as the
virtual address for most of the addresses. an address above 4GB cannot
generally be used as a device address, it needs to be mapped to a lower
physical address. This routine does not call the map routine itself, but it
assumes that the mapping was done at the time of providing the address to
UNDI. This routine just looks up the address in a map table (which is the v2p
structure chain).
@param CpuAddr Virtual address.
@param DeviceAddrPtr Pointer to the physical address, or 0 in case of any
error.
**/
VOID
EFIAPI
SnpUndi32CallbackV2p30 (
IN UINT64 CpuAddr,
IN OUT UINT64 DeviceAddrPtr
)
{
V2P *V2p;
//
// Do nothing if virtual address is zero or physical pointer is NULL.
// No need to map if the virtual address is within 4GB limit since
// EFI uses identical mapping
//
if ((CpuAddr == 0) || (DeviceAddrPtr == 0)) {
DEBUG ((EFI_D_NET, "\nv2p: Null virtual address or physical pointer.\n"));
return ;
}
if (CpuAddr < FOUR_GIGABYTES) {
*(UINT64 *) (UINTN) DeviceAddrPtr = CpuAddr;
return ;
}
//
// SNP creates a vaddr tp paddr mapping at the time of calling undi with any
// big address, this callback routine just looks up in the v2p list and
// returns the physical address for any given virtual address.
//
if (FindV2p (&V2p, (VOID *) (UINTN) CpuAddr) != EFI_SUCCESS) {
*(UINT64 *) (UINTN) DeviceAddrPtr = CpuAddr;
} else {
*(UINT64 *) (UINTN) DeviceAddrPtr = V2p->PhysicalAddress;
}
}
/**
Acquire or release a lock of an exclusive access to a critical section of the
code/data.
This is a callback routine supplied to UNDI at undi_start time.
@param Enable Non-zero indicates acquire; Zero indicates release.
**/
VOID
EFIAPI
SnpUndi32CallbackBlock30 (
IN UINT32 Enable
)
{
//
// tcpip was calling snp at tpl_notify and if we acquire a lock that was
// created at a lower level (TPL_CALLBACK) it gives an assert!
//
if (mInitializeLock) {
EfiInitializeLock (&mLock, TPL_NOTIFY);
mInitializeLock = FALSE;
}
if (Enable != 0) {
EfiAcquireLock (&mLock);
} else {
EfiReleaseLock (&mLock);
}
}
/**
Delay MicroSeconds of micro seconds.
This is a callback routine supplied to UNDI at undi_start time.
@param MicroSeconds Number of micro seconds to pause, ususlly multiple of 10.
**/
VOID
EFIAPI
SnpUndi32CallbackDelay30 (
IN UINT64 MicroSeconds
)
{
if (MicroSeconds != 0) {
gBS->Stall ((UINTN) MicroSeconds);
}
}
/**
IO routine for UNDI.
This is a callback routine supplied to UNDI at undi_start time. This is not
currently being used by UNDI3.0 because Undi3.0 uses io/mem offsets relative
to the beginning of the device io/mem address and so it needs to use the
PCI_IO_FUNCTION that abstracts the start of the device's io/mem addresses.
Since SNP cannot retrive the context of the undi3.0 interface it cannot use
the PCI_IO_FUNCTION that specific for that NIC and uses one global IO
functions structure, this does not work. This however works fine for EFI1.0
Undis because they use absolute addresses for io/mem access.
@param ReadOrWrite Indicates read or write, IO or Memory.
@param NumBytes Number of bytes to read or write.
@param Address IO or memory address to read from or write to.
@param BufferAddr Memory location to read into or that contains the bytes to
write.
**/
VOID
EFIAPI
SnpUndi32CallbackMemio30 (
IN UINT8 ReadOrWrite,
IN UINT8 NumBytes,
IN UINT64 Address,
IN OUT UINT64 BufferAddr
)
{
EFI_PCI_IO_PROTOCOL_WIDTH Width;
switch (NumBytes) {
case 2:
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 1;
break;
case 4:
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 2;
break;
case 8:
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 3;
break;
default:
Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 0;
}
switch (ReadOrWrite) {
case PXE_IO_READ:
mPciIo->Io.Read (
mPciIo,
Width,
1, // BAR 1, IO base address
Address,
1, // count
(VOID *) (UINTN) BufferAddr
);
break;
case PXE_IO_WRITE:
mPciIo->Io.Write (
mPciIo,
Width,
1, // BAR 1, IO base address
Address,
1, // count
(VOID *) (UINTN) BufferAddr
);
break;
case PXE_MEM_READ:
mPciIo->Mem.Read (
mPciIo,
Width,
0, // BAR 0, Memory base address
Address,
1, // count
(VOID *) (UINTN) BufferAddr
);
break;
case PXE_MEM_WRITE:
mPciIo->Mem.Write (
mPciIo,
Width,
0, // BAR 0, Memory base address
Address,
1, // count
(VOID *) (UINTN) BufferAddr
);
break;
}
return ;
}
/**
Acquire or release a lock of the exclusive access to a critical section of the
code/data.

333
MdeModulePkg/Universal/Network/SnpDxe/Snp.c
View File

@ -14,14 +14,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include "Snp.h"
//
// Module global variables needed to support undi 3.0 interface
//
EFI_PCI_IO_PROTOCOL *mPciIo;
V2P *mV2p = NULL; // undi3.0 map_list head
// End Global variables
//
/**
One notified function to stop UNDI device when gBS->ExitBootServices() called.
@ -277,11 +269,10 @@ SimpleNetworkDriverStart (
SNP_DRIVER *Snp;
VOID *Address;
EFI_HANDLE Handle;
PXE_PCI_CONFIG_INFO ConfigInfo;
PCI_TYPE00 *ConfigHeader;
UINT32 *TempBar;
UINT8 BarIndex;
PXE_STATFLAGS InitStatFlags;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BarDesc;
DEBUG ((EFI_D_NET, "\nSnpNotifyNetworkInterfaceIdentifier() "));
@ -311,7 +302,7 @@ SimpleNetworkDriverStart (
Status = gBS->OpenProtocol (
Handle,
&gEfiPciIoProtocolGuid,
(VOID **) &mPciIo,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
@ -367,14 +358,14 @@ SimpleNetworkDriverStart (
// 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 = mPciIo->AllocateBuffer (
mPciIo,
AllocateAnyPages,
EfiBootServicesData,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
&Address,
0
);
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"));
@ -385,7 +376,7 @@ SimpleNetworkDriverStart (
ZeroMem (Snp, sizeof (SNP_DRIVER));
Snp->PciIo = mPciIo;
Snp->PciIo = PciIo;
Snp->Signature = SNP_DRIVER_SIGNATURE;
EfiInitializeLock (&Snp->Lock, TPL_NOTIFY);
@ -446,14 +437,14 @@ SimpleNetworkDriverStart (
// -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 = mPciIo->AllocateBuffer (
mPciIo,
AllocateAnyPages,
EfiBootServicesData,
SNP_MEM_PAGES (4096),
&Address,
0
);
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"));
@ -464,19 +455,35 @@ SimpleNetworkDriverStart (
Snp->Db = (VOID *) ((UINTN) Address + 2048);
//
// PxeStart call is going to give the callback functions to UNDI, these callback
// functions use the BarIndex values from the snp structure, so these must be initialized
// with default values before doing a PxeStart. The correct values can be obtained after
// getting the config information from UNDI
// Find the correct memory and io bar.
//
Snp->MemoryBarIndex = 0;
Snp->IoBarIndex = 1;
Snp->MemoryBarIndex = PCI_MAX_BAR;
Snp->IoBarIndex = PCI_MAX_BAR;
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 (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) {
Snp->MemoryBarIndex = BarIndex;
} else if (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_IO) {
Snp->IoBarIndex = BarIndex;
}
FreePool (BarDesc);
}
if ((Snp->MemoryBarIndex == PCI_MAX_BAR) || (Snp->IoBarIndex == PCI_MAX_BAR)) {
goto Error_DeleteSNP;
}
//
// we need the undi init information many times in this snp code, just get it
// once here and store it in the snp driver structure. to get Init Info
// from UNDI we have to start undi first.
//
Status = PxeStart (Snp);
if (Status != EFI_SUCCESS) {
@ -513,57 +520,6 @@ SimpleNetworkDriverStart (
goto Error_DeleteSNP;
}
Snp->Cdb.OpCode = PXE_OPCODE_GET_CONFIG_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 (ConfigInfo);
Snp->Cdb.DBaddr = (UINT64)(UINTN) &ConfigInfo;
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_config_info() "));
(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
DEBUG ((EFI_D_NET, "\nSnp->undi.config_info() %xh:%xh\n", Snp->Cdb.StatFlags, Snp->Cdb.StatCode));
PxeStop (Snp);
goto Error_DeleteSNP;
}
//
// 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
//
ConfigHeader = (PCI_TYPE00 *) ConfigInfo.Config.Byte;
TempBar = (UINT32 *) ConfigHeader->Device.Bar;
for (BarIndex = 0; BarIndex <= 5; BarIndex++) {
if ((*TempBar & PCI_BAR_MEM_MASK) == PCI_BAR_MEM_64BIT) {
//
// This is a 64-bit memory bar, skip this and the
// next bar as well.
//
TempBar++;
}
if ((*TempBar & PCI_BAR_IO_MASK) == PCI_BAR_IO_MODE) {
Snp->IoBarIndex = BarIndex;
break;
}
TempBar++;
}
//
// Initialize simple network protocol mode structure
//
@ -703,19 +659,19 @@ SimpleNetworkDriverStart (
return Status;
}
mPciIo->FreeBuffer (
mPciIo,
SNP_MEM_PAGES (4096),
Snp->Cpb
);
PciIo->FreeBuffer (
PciIo,
SNP_MEM_PAGES (4096),
Snp->Cpb
);
Error_DeleteSNP:
mPciIo->FreeBuffer (
mPciIo,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
Snp
);
PciIo->FreeBuffer (
PciIo,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
Snp
);
NiiError:
gBS->CloseProtocol (
Controller,
@ -771,6 +727,7 @@ SimpleNetworkDriverStop (
EFI_STATUS Status;
EFI_SIMPLE_NETWORK_PROTOCOL *SnpProtocol;
SNP_DRIVER *Snp;
EFI_PCI_IO_PROTOCOL *PciIo;
//
// Get our context back.
@ -822,17 +779,18 @@ SimpleNetworkDriverStop (
PxeShutdown (Snp);
PxeStop (Snp);
mPciIo->FreeBuffer (
mPciIo,
SNP_MEM_PAGES (4096),
Snp->Cpb
);
PciIo = Snp->PciIo;
PciIo->FreeBuffer (
PciIo,
SNP_MEM_PAGES (4096),
Snp->Cpb
);
mPciIo->FreeBuffer (
mPciIo,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
Snp
);
PciIo->FreeBuffer (
PciIo,
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
Snp
);
return Status;
}
@ -849,159 +807,6 @@ EFI_DRIVER_BINDING_PROTOCOL gSimpleNetworkDriverBinding = {
NULL
};
/**
This routine maps the given CPU address to a Device address. It creates a
an entry in the map list with the virtual and physical addresses and the
un map cookie.
@param V2p pointer to return a map list node pointer.
@param Type the direction in which the data flows from the given
virtual address device->cpu or cpu->device or both
ways.
@param VirtualAddress virtual address (or CPU address) to be mapped.
@param BufferSize size of the buffer to be mapped.
@retval EFI_SUCEESS routine has completed the mapping.
@retval EFI_INVALID_PARAMETER invalid parameter.
@retval EFI_OUT_OF_RESOURCES out of resource.
@retval other error as indicated.
**/
EFI_STATUS
AddV2P (
IN OUT V2P **V2p,
EFI_PCI_IO_PROTOCOL_OPERATION Type,
VOID *VirtualAddress,
UINTN BufferSize
)
{
EFI_STATUS Status;
if ((V2p == NULL) || (VirtualAddress == NULL) || (BufferSize == 0)) {
return EFI_INVALID_PARAMETER;
}
*V2p = AllocatePool (sizeof (V2P));
if (*V2p == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = mPciIo->Map (
mPciIo,
Type,
VirtualAddress,
&BufferSize,
&(*V2p)->PhysicalAddress,
&(*V2p)->Unmap
);
if (Status != EFI_SUCCESS) {
FreePool (*V2p);
return Status;
}
(*V2p)->VirtualAddress = VirtualAddress;
(*V2p)->BufferSize = BufferSize;
(*V2p)->Next = mV2p;
mV2p = *V2p;
return EFI_SUCCESS;
}
/**
This routine searches the linked list of mapped address nodes (for undi3.0
interface) to find the node that corresponds to the given virtual address and
returns a pointer to that node.
@param V2p pointer to return a map list node pointer.
@param VirtualAddr virtual address (or CPU address) to be searched in
the map list
@retval EFI_SUCEESS A match was found.
@retval Other A match cannot be found.
**/
EFI_STATUS
FindV2p (
V2P **V2p,
VOID *VirtualAddr
)
{
V2P *Ptr;
if (V2p == NULL || VirtualAddr == NULL) {
return EFI_INVALID_PARAMETER;
}
for (Ptr = mV2p; Ptr != NULL; Ptr = Ptr->Next) {
if (Ptr->VirtualAddress == VirtualAddr) {
*V2p = Ptr;
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
/**
Unmap the given virtual address and free the memory allocated for the map list
node corresponding to that address.
@param VirtualAddress virtual address (or CPU address) to be unmapped.
@retval EFI_SUCEESS Successfully unmapped.
@retval Other Other errors as indicated.
**/
EFI_STATUS
DelV2p (
VOID *VirtualAddress
)
{
V2P *Current;
V2P *Next;
EFI_STATUS Status;
if (VirtualAddress == NULL) {
return EFI_INVALID_PARAMETER;
}
if (mV2p == NULL) {
return EFI_NOT_FOUND;
}
//
// Is our node at the head of the list??
//
if ((Current = mV2p)->VirtualAddress == VirtualAddress) {
mV2p = mV2p->Next;
Status = mPciIo->Unmap (mPciIo, Current->Unmap);
FreePool (Current);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Unmap failed with status = %r\n", Status));
}
return Status;
}
for (; Current->Next != NULL; Current = Next) {
if ((Next = Current->Next)->VirtualAddress == VirtualAddress) {
Current->Next = Next->Next;
Status = mPciIo->Unmap (mPciIo, Next->Unmap);
FreePool (Next);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Unmap failed with status = %r\n", Status));
}
return Status;
}
}
return EFI_NOT_FOUND;
}
/**
The SNP driver entry point.

153
MdeModulePkg/Universal/Network/SnpDxe/Snp.h
View File

@ -1,7 +1,7 @@
/** @file
Declaration of strctures and functions for SnpDxe driver.
Copyright (c) 2004 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
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
@ -34,6 +34,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/PrintLib.h>
#include <IndustryStandard/Pci.h>
#include <IndustryStandard/Acpi.h>
#define FOUR_GIGABYTES (UINT64) 0x100000000ULL
@ -140,62 +141,6 @@ extern EFI_DRIVER_BINDING_PROTOCOL gSimpleNetworkDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gSimpleNetworkComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gSimpleNetworkComponentName2;
//
// Virtual to physical mapping for all UNDI 3.0s.
//
typedef struct _V2P V2P;
struct _V2P {
V2P *Next;
VOID *VirtualAddress;
UINTN BufferSize;
EFI_PHYSICAL_ADDRESS PhysicalAddress;
VOID *Unmap;
};
/**
This routine maps the given CPU address to a Device address. It creates a
an entry in the map list with the virtual and physical addresses and the
un map cookie.
@param V2p pointer to return a map list node pointer.
@param Type the direction in which the data flows from the given
virtual address device->cpu or cpu->device or both
ways.
@param VirtualAddress virtual address (or CPU address) to be mapped.
@param BufferSize size of the buffer to be mapped.
@retval EFI_SUCEESS routine has completed the mapping.
@retval other error as indicated.
**/
EFI_STATUS
AddV2p (
V2P **V2p,
EFI_PCI_IO_PROTOCOL_OPERATION Type,
VOID *VirtualAddress,
UINTN BufferSize
);
/**
This routine searches the linked list of mapped address nodes (for undi3.0
interface) to find the node that corresponds to the given virtual address and
returns a pointer to that node.
@param V2p pointer to return a map list node pointer.
@param VirtualAddress virtual address (or CPU address) to be searched in
the map list
@retval EFI_SUCEESS if a match found!
@retval Other match not found
**/
EFI_STATUS
FindV2p (
V2P **V2p,
VOID *VirtualAddress
);
/**
this routine calls undi to start the interface and changes the snp state.
@ -272,100 +217,6 @@ PxeGetStnAddr (
SNP_DRIVER *Snp
);
/**
This routine unmaps the given virtual address and frees the memory allocated
for the map list node corresponding to that address.
@param VirtualAddress virtual address (or CPU address) to be unmapped
@retval EFI_SUCEESS if successfully unmapped
@retval Other as indicated by the error
**/
EFI_STATUS
DelV2p (
VOID *VirtualAddress
);
/**
This is a callback routine supplied to UNDI at undi_start time.
UNDI call this routine when it wants to have exclusive access to a critical
section of the code/data.
@param Enable non-zero indicates acquire
zero indicates release
**/
VOID
EFIAPI
SnpUndi32CallbackBlock30 (
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 MicroSeconds number of micro seconds to pause, ususlly multiple of 10.
**/
VOID
EFIAPI
SnpUndi32CallbackDelay30 (
IN UINT64 MicroSeconds
);
/**
This is a callback routine supplied to UNDI at undi_start time.
This is the IO routine for UNDI. This is not currently being used by UNDI3.0
because Undi3.0 uses io/mem offsets relative to the beginning of the device
io/mem address and so it needs to use the PCI_IO_FUNCTION that abstracts the
start of the device's io/mem addresses. Since SNP cannot retrive the context
of the undi3.0 interface it cannot use the PCI_IO_FUNCTION that specific for
that NIC and uses one global IO functions structure, this does not work.
This however works fine for EFI1.0 Undis because they use absolute addresses
for io/mem access.
@param ReadOrWrite indicates read or write, IO or Memory
@param NumBytes number of bytes to read or write
@param Address IO or memory address to read from or write to
@param BufferAddr memory location to read into or that contains the bytes to
write
**/
VOID
EFIAPI
SnpUndi32CallbackMemio30 (
IN UINT8 ReadOrWrite,
IN UINT8 NumBytes,
IN UINT64 Address,
IN OUT UINT64 BufferAddr
);
/**
This is a callback routine supplied to UNDI at undi_start time.
UNDI call this routine with a virtual or CPU address that SNP provided to
convert it to a physical or device address. Since EFI uses the identical
mapping, this routine returns the physical address same as the virtual address
for most of the addresses. an address above 4GB cannot generally be used as a
device address, it needs to be mapped to a lower physical address. This
routine does not call the map routine itself, but it assumes that the mapping
was done at the time of providing the address to UNDI. This routine just
looks up the address in a map table (which is the v2p structure chain).
@param CpuAddr virtual address of a buffer.
@param DeviceAddrPtr pointer to the physical address.
The DeviceAddrPtr will contain 0 in case of any error.
**/
VOID
EFIAPI
SnpUndi32CallbackV2p30 (
IN UINT64 CpuAddr,
IN OUT UINT64 DeviceAddrPtr
);
/**
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