sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

sync comments, fix function header, rename variable name to follow coding style.

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6481 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niry
2008-11-13 03:42:21 +00:00
parent dfc005c30f
commit 4cda7726e5
18 changed files with 2884 additions and 2016 deletions
Download Patch File Download Diff File Expand all files Collapse all files

165
MdeModulePkg/Universal/Network/SnpDxe/Nvdata.c
View File

@@ -1,21 +1,16 @@
/** @file
Copyright (c) 2004 - 2007, Intel Corporation
All rights reserved. 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
http://opensource.org/licenses/bsd-license.php
Implementation of reading and writing operations on the NVRAM device
attached to a network interface.
Copyright (c) 2004 - 2007, Intel Corporation. <BR>
All rights reserved. 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
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module name:
nvdata.c
Abstract:
Revision history:
2000-Feb-03 M(f)J Genesis.
**/
#include "Snp.h"
@@ -24,47 +19,47 @@ Revision history:
/**
This routine calls Undi to read the desired number of eeprom bytes.
@param snp pointer to the snp driver structure
@param RegOffset eeprom register value relative to the base address
@param NumBytes number of bytes to read
@param BufferPtr pointer where to read into
@param Snp pointer to the snp driver structure
@param Offset eeprom register value relative to the base address
@param BufferSize number of bytes to read
@param Buffer pointer where to read into
**/
EFI_STATUS
pxe_nvdata_read (
IN SNP_DRIVER *snp,
IN UINTN RegOffset,
IN UINTN NumBytes,
IN OUT VOID *BufferPtr
PxeNvDataRead (
IN SNP_DRIVER *Snp,
IN UINTN Offset,
IN UINTN BufferSize,
IN OUT VOID *Buffer
)
{
PXE_DB_NVDATA *db;
PXE_DB_NVDATA *Db;
db = snp->db;
snp->cdb.OpCode = PXE_OPCODE_NVDATA;
Db = Snp->Db;
Snp->Cdb.OpCode = PXE_OPCODE_NVDATA;
snp->cdb.OpFlags = PXE_OPFLAGS_NVDATA_READ;
Snp->Cdb.OpFlags = PXE_OPFLAGS_NVDATA_READ;
snp->cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
snp->cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
snp->cdb.DBsize = sizeof (PXE_DB_NVDATA);
snp->cdb.DBaddr = (UINT64)(UINTN) db;
Snp->Cdb.DBsize = sizeof (PXE_DB_NVDATA);
Snp->Cdb.DBaddr = (UINT64)(UINTN) Db;
snp->cdb.StatCode = PXE_STATCODE_INITIALIZE;
snp->cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
snp->cdb.IFnum = snp->if_num;
snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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;
//
// Issue UNDI command and check result.
//
DEBUG ((EFI_D_NET, "\nsnp->undi.nvdata () "));
(*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);
(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
switch (snp->cdb.StatCode) {
switch (Snp->Cdb.StatCode) {
case PXE_STATCODE_SUCCESS:
break;
@@ -72,8 +67,8 @@ pxe_nvdata_read (
DEBUG (
(EFI_D_NET,
"\nsnp->undi.nvdata() %xh:%xh\n",
snp->cdb.StatFlags,
snp->cdb.StatCode)
Snp->Cdb.StatFlags,
Snp->Cdb.StatCode)
);
return EFI_UNSUPPORTED;
@@ -82,61 +77,99 @@ pxe_nvdata_read (
DEBUG (
(EFI_D_NET,
"\nsnp->undi.nvdata() %xh:%xh\n",
snp->cdb.StatFlags,
snp->cdb.StatCode)
Snp->Cdb.StatFlags,
Snp->Cdb.StatCode)
);
return EFI_DEVICE_ERROR;
}
CopyMem (BufferPtr, db->Data.Byte + RegOffset, NumBytes);
CopyMem (Buffer, Db->Data.Byte + Offset, BufferSize);
return EFI_SUCCESS;
}
/**
This is an interface call provided by SNP.
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 context pointer
@param ReadOrWrite true for reading and false for writing
@param RegOffset eeprom register relative to the base
@param NumBytes how many bytes to read
@param BufferPtr address of memory to read into
@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
snp_undi32_nvdata (
IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
IN BOOLEAN ReadOrWrite,
IN UINTN RegOffset,
IN UINTN NumBytes,
IN OUT VOID *BufferPtr
SnpUndi32NvData (
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
IN BOOLEAN ReadWrite,
IN UINTN Offset,
IN UINTN BufferSize,
IN OUT VOID *Buffer
)
{
SNP_DRIVER *snp;
SNP_DRIVER *Snp;
EFI_TPL OldTpl;
EFI_STATUS Status;
//
// Get pointer to SNP driver instance for *this.
//
if (this == NULL) {
if (This == NULL) {
return EFI_INVALID_PARAMETER;
}
snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
//
// Return error if the SNP is not initialized.
//
switch (snp->mode.State) {
switch (Snp->Mode.State) {
case EfiSimpleNetworkInitialized:
break;
@@ -151,19 +184,19 @@ snp_undi32_nvdata (
//
// Return error if non-volatile memory variables are not valid.
//
if (snp->mode.NvRamSize == 0 || snp->mode.NvRamAccessSize == 0) {
if (Snp->Mode.NvRamSize == 0 || Snp->Mode.NvRamAccessSize == 0) {
Status = EFI_UNSUPPORTED;
goto ON_EXIT;
}
//
// Check for invalid parameter combinations.
//
if ((NumBytes == 0) ||
(BufferPtr == NULL) ||
(RegOffset >= snp->mode.NvRamSize) ||
(RegOffset + NumBytes > snp->mode.NvRamSize) ||
(NumBytes % snp->mode.NvRamAccessSize != 0) ||
(RegOffset % snp->mode.NvRamAccessSize != 0)
if ((BufferSize == 0) ||
(Buffer == NULL) ||
(Offset >= Snp->Mode.NvRamSize) ||
(Offset + BufferSize > Snp->Mode.NvRamSize) ||
(BufferSize % Snp->Mode.NvRamAccessSize != 0) ||
(Offset % Snp->Mode.NvRamAccessSize != 0)
) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
@@ -171,10 +204,10 @@ snp_undi32_nvdata (
//
// check the implementation flags of undi if we can write the nvdata!
//
if (!ReadOrWrite) {
if (!ReadWrite) {
Status = EFI_UNSUPPORTED;
} else {
Status = pxe_nvdata_read (snp, RegOffset, NumBytes, BufferPtr);
Status = PxeNvDataRead (Snp, Offset, BufferSize, Buffer);
}
ON_EXIT: