dbc9f36cf7
Now that the SPDX tag is in all vt6655 files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Forest Bond <forest@alittletooquiet.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* File: srom.c
|
|
*
|
|
* Purpose:Implement functions to access eeprom
|
|
*
|
|
* Author: Jerry Chen
|
|
*
|
|
* Date: Jan 29, 2003
|
|
*
|
|
* Functions:
|
|
* SROMbyReadEmbedded - Embedded read eeprom via MAC
|
|
* SROMbWriteEmbedded - Embedded write eeprom via MAC
|
|
* SROMvRegBitsOn - Set Bits On in eeprom
|
|
* SROMvRegBitsOff - Clear Bits Off in eeprom
|
|
* SROMbIsRegBitsOn - Test if Bits On in eeprom
|
|
* SROMbIsRegBitsOff - Test if Bits Off in eeprom
|
|
* SROMvReadAllContents - Read all contents in eeprom
|
|
* SROMvWriteAllContents - Write all contents in eeprom
|
|
* SROMvReadEtherAddress - Read Ethernet Address in eeprom
|
|
* SROMvWriteEtherAddress - Write Ethernet Address in eeprom
|
|
* SROMvReadSubSysVenId - Read Sub_VID and Sub_SysId in eeprom
|
|
* SROMbAutoLoad - Auto Load eeprom to MAC register
|
|
*
|
|
* Revision History:
|
|
*
|
|
*/
|
|
|
|
#include "upc.h"
|
|
#include "tmacro.h"
|
|
#include "mac.h"
|
|
#include "srom.h"
|
|
|
|
/*--------------------- Static Definitions -------------------------*/
|
|
|
|
/*--------------------- Static Classes ----------------------------*/
|
|
|
|
/*--------------------- Static Variables --------------------------*/
|
|
|
|
/*--------------------- Static Functions --------------------------*/
|
|
|
|
/*--------------------- Export Variables --------------------------*/
|
|
|
|
/*--------------------- Export Functions --------------------------*/
|
|
|
|
/*
|
|
* Description: Read a byte from EEPROM, by MAC I2C
|
|
*
|
|
* Parameters:
|
|
* In:
|
|
* iobase - I/O base address
|
|
* byContntOffset - address of EEPROM
|
|
* Out:
|
|
* none
|
|
*
|
|
* Return Value: data read
|
|
*
|
|
*/
|
|
unsigned char SROMbyReadEmbedded(void __iomem *iobase,
|
|
unsigned char byContntOffset)
|
|
{
|
|
unsigned short wDelay, wNoACK;
|
|
unsigned char byWait;
|
|
unsigned char byData;
|
|
unsigned char byOrg;
|
|
|
|
byData = 0xFF;
|
|
VNSvInPortB(iobase + MAC_REG_I2MCFG, &byOrg);
|
|
/* turn off hardware retry for getting NACK */
|
|
VNSvOutPortB(iobase + MAC_REG_I2MCFG, (byOrg & (~I2MCFG_NORETRY)));
|
|
for (wNoACK = 0; wNoACK < W_MAX_I2CRETRY; wNoACK++) {
|
|
VNSvOutPortB(iobase + MAC_REG_I2MTGID, EEP_I2C_DEV_ID);
|
|
VNSvOutPortB(iobase + MAC_REG_I2MTGAD, byContntOffset);
|
|
|
|
/* issue read command */
|
|
VNSvOutPortB(iobase + MAC_REG_I2MCSR, I2MCSR_EEMR);
|
|
/* wait DONE be set */
|
|
for (wDelay = 0; wDelay < W_MAX_TIMEOUT; wDelay++) {
|
|
VNSvInPortB(iobase + MAC_REG_I2MCSR, &byWait);
|
|
if (byWait & (I2MCSR_DONE | I2MCSR_NACK))
|
|
break;
|
|
PCAvDelayByIO(CB_DELAY_LOOP_WAIT);
|
|
}
|
|
if ((wDelay < W_MAX_TIMEOUT) &&
|
|
(!(byWait & I2MCSR_NACK))) {
|
|
break;
|
|
}
|
|
}
|
|
VNSvInPortB(iobase + MAC_REG_I2MDIPT, &byData);
|
|
VNSvOutPortB(iobase + MAC_REG_I2MCFG, byOrg);
|
|
return byData;
|
|
}
|
|
|
|
/*
|
|
* Description: Read all contents of eeprom to buffer
|
|
*
|
|
* Parameters:
|
|
* In:
|
|
* iobase - I/O base address
|
|
* Out:
|
|
* pbyEepromRegs - EEPROM content Buffer
|
|
*
|
|
* Return Value: none
|
|
*
|
|
*/
|
|
void SROMvReadAllContents(void __iomem *iobase, unsigned char *pbyEepromRegs)
|
|
{
|
|
int ii;
|
|
|
|
/* ii = Rom Address */
|
|
for (ii = 0; ii < EEP_MAX_CONTEXT_SIZE; ii++) {
|
|
*pbyEepromRegs = SROMbyReadEmbedded(iobase,
|
|
(unsigned char)ii);
|
|
pbyEepromRegs++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Description: Read Ethernet Address from eeprom to buffer
|
|
*
|
|
* Parameters:
|
|
* In:
|
|
* iobase - I/O base address
|
|
* Out:
|
|
* pbyEtherAddress - Ethernet Address buffer
|
|
*
|
|
* Return Value: none
|
|
*
|
|
*/
|
|
void SROMvReadEtherAddress(void __iomem *iobase,
|
|
unsigned char *pbyEtherAddress)
|
|
{
|
|
unsigned char ii;
|
|
|
|
/* ii = Rom Address */
|
|
for (ii = 0; ii < ETH_ALEN; ii++) {
|
|
*pbyEtherAddress = SROMbyReadEmbedded(iobase, ii);
|
|
pbyEtherAddress++;
|
|
}
|
|
}
|