diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/staging/vt6655/srom.c |
Initial import
Diffstat (limited to 'drivers/staging/vt6655/srom.c')
-rw-r--r-- | drivers/staging/vt6655/srom.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/drivers/staging/vt6655/srom.c b/drivers/staging/vt6655/srom.c new file mode 100644 index 000000000..9ec49e653 --- /dev/null +++ b/drivers/staging/vt6655/srom.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * 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: + * dwIoBase - I/O base address + * byContntOffset - address of EEPROM + * Out: + * none + * + * Return Value: data read + * + */ +unsigned char SROMbyReadEmbedded(void __iomem *dwIoBase, unsigned char byContntOffset) +{ + unsigned short wDelay, wNoACK; + unsigned char byWait; + unsigned char byData; + unsigned char byOrg; + + byData = 0xFF; + VNSvInPortB(dwIoBase + MAC_REG_I2MCFG, &byOrg); + /* turn off hardware retry for getting NACK */ + VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, (byOrg & (~I2MCFG_NORETRY))); + for (wNoACK = 0; wNoACK < W_MAX_I2CRETRY; wNoACK++) { + VNSvOutPortB(dwIoBase + MAC_REG_I2MTGID, EEP_I2C_DEV_ID); + VNSvOutPortB(dwIoBase + MAC_REG_I2MTGAD, byContntOffset); + + /* issue read command */ + VNSvOutPortB(dwIoBase + MAC_REG_I2MCSR, I2MCSR_EEMR); + /* wait DONE be set */ + for (wDelay = 0; wDelay < W_MAX_TIMEOUT; wDelay++) { + VNSvInPortB(dwIoBase + 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(dwIoBase + MAC_REG_I2MDIPT, &byData); + VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, byOrg); + return byData; +} + +/* + * Description: Read all contents of eeprom to buffer + * + * Parameters: + * In: + * dwIoBase - I/O base address + * Out: + * pbyEepromRegs - EEPROM content Buffer + * + * Return Value: none + * + */ +void SROMvReadAllContents(void __iomem *dwIoBase, unsigned char *pbyEepromRegs) +{ + int ii; + + /* ii = Rom Address */ + for (ii = 0; ii < EEP_MAX_CONTEXT_SIZE; ii++) { + *pbyEepromRegs = SROMbyReadEmbedded(dwIoBase, (unsigned char)ii); + pbyEepromRegs++; + } +} + +/* + * Description: Read Ethernet Address from eeprom to buffer + * + * Parameters: + * In: + * dwIoBase - I/O base address + * Out: + * pbyEtherAddress - Ethernet Address buffer + * + * Return Value: none + * + */ +void SROMvReadEtherAddress(void __iomem *dwIoBase, unsigned char *pbyEtherAddress) +{ + unsigned char ii; + + /* ii = Rom Address */ + for (ii = 0; ii < ETH_ALEN; ii++) { + *pbyEtherAddress = SROMbyReadEmbedded(dwIoBase, ii); + pbyEtherAddress++; + } +} |