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path: root/drivers/staging/vt6655/srom.c
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diff --git a/drivers/staging/vt6655/srom.c b/drivers/staging/vt6655/srom.c
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+++ b/drivers/staging/vt6655/srom.c
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+/*
+ * 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:
+ *
+ */
+
+
+#if !defined(__UPC_H__)
+#include "upc.h"
+#endif
+#if !defined(__TMACRO_H__)
+#include "tmacro.h"
+#endif
+#if !defined(__TBIT_H__)
+#include "tbit.h"
+#endif
+#if !defined(__TETHER_H__)
+#include "tether.h"
+#endif
+#if !defined(__MAC_H__)
+#include "mac.h"
+#endif
+#if !defined(__SROM_H__)
+#include "srom.h"
+#endif
+
+
+
+
+/*--------------------- 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
+ *
+ */
+BYTE SROMbyReadEmbedded(DWORD_PTR dwIoBase, BYTE byContntOffset)
+{
+ WORD wDelay, wNoACK;
+ BYTE byWait;
+ BYTE byData;
+ BYTE 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 (BITbIsAnyBitsOn(byWait, (I2MCSR_DONE | I2MCSR_NACK)))
+ break;
+ PCAvDelayByIO(CB_DELAY_LOOP_WAIT);
+ }
+ if ((wDelay < W_MAX_TIMEOUT) &&
+ (BITbIsBitOff(byWait, I2MCSR_NACK))) {
+ break;
+ }
+ }
+ VNSvInPortB(dwIoBase + MAC_REG_I2MDIPT, &byData);
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, byOrg);
+ return byData;
+}
+
+
+/*
+ * Description: Write a byte to EEPROM, by MAC I2C
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * byContntOffset - address of EEPROM
+ * wData - data to write
+ * Out:
+ * none
+ *
+ * Return Value: TRUE if succeeded; FALSE if failed.
+ *
+ */
+BOOL SROMbWriteEmbedded (DWORD_PTR dwIoBase, BYTE byContntOffset, BYTE byData)
+{
+ WORD wDelay, wNoACK;
+ BYTE byWait;
+
+ BYTE byOrg;
+
+ 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);
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MDOPT, byData);
+
+ // issue write command
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MCSR, I2MCSR_EEMW);
+ // wait DONE be set
+ for (wDelay = 0; wDelay < W_MAX_TIMEOUT; wDelay++) {
+ VNSvInPortB(dwIoBase + MAC_REG_I2MCSR, &byWait);
+ if (BITbIsAnyBitsOn(byWait, (I2MCSR_DONE | I2MCSR_NACK)))
+ break;
+ PCAvDelayByIO(CB_DELAY_LOOP_WAIT);
+ }
+
+ if ((wDelay < W_MAX_TIMEOUT) &&
+ (BITbIsBitOff(byWait, I2MCSR_NACK))) {
+ break;
+ }
+ }
+ if (wNoACK == W_MAX_I2CRETRY) {
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, byOrg);
+ return FALSE;
+ }
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, byOrg);
+ return TRUE;
+}
+
+
+/*
+ * Description: Turn bits on in eeprom
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * byContntOffset - address of EEPROM
+ * byBits - bits to turn on
+ * Out:
+ * none
+ *
+ * Return Value: none
+ *
+ */
+void SROMvRegBitsOn (DWORD_PTR dwIoBase, BYTE byContntOffset, BYTE byBits)
+{
+ BYTE byOrgData;
+
+ byOrgData = SROMbyReadEmbedded(dwIoBase, byContntOffset);
+ SROMbWriteEmbedded(dwIoBase, byContntOffset,(BYTE)(byOrgData | byBits));
+}
+
+
+/*
+ * Description: Turn bits off in eeprom
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * byContntOffset - address of EEPROM
+ * byBits - bits to turn off
+ * Out:
+ * none
+ *
+ */
+void SROMvRegBitsOff (DWORD_PTR dwIoBase, BYTE byContntOffset, BYTE byBits)
+{
+ BYTE byOrgData;
+
+ byOrgData = SROMbyReadEmbedded(dwIoBase, byContntOffset);
+ SROMbWriteEmbedded(dwIoBase, byContntOffset,(BYTE)(byOrgData & (~byBits)));
+}
+
+
+/*
+ * Description: Test if bits on in eeprom
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * byContntOffset - address of EEPROM
+ * byTestBits - bits to test
+ * Out:
+ * none
+ *
+ * Return Value: TRUE if all test bits on; otherwise FALSE
+ *
+ */
+BOOL SROMbIsRegBitsOn (DWORD_PTR dwIoBase, BYTE byContntOffset, BYTE byTestBits)
+{
+ BYTE byOrgData;
+
+ byOrgData = SROMbyReadEmbedded(dwIoBase, byContntOffset);
+ return BITbIsAllBitsOn(byOrgData, byTestBits);
+}
+
+
+/*
+ * Description: Test if bits off in eeprom
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * byContntOffset - address of EEPROM
+ * byTestBits - bits to test
+ * Out:
+ * none
+ *
+ * Return Value: TRUE if all test bits off; otherwise FALSE
+ *
+ */
+BOOL SROMbIsRegBitsOff (DWORD_PTR dwIoBase, BYTE byContntOffset, BYTE byTestBits)
+{
+ BYTE byOrgData;
+
+ byOrgData = SROMbyReadEmbedded(dwIoBase, byContntOffset);
+ return BITbIsAllBitsOff(byOrgData, byTestBits);
+}
+
+
+/*
+ * 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 (DWORD_PTR dwIoBase, PBYTE pbyEepromRegs)
+{
+ int ii;
+
+ // ii = Rom Address
+ for (ii = 0; ii < EEP_MAX_CONTEXT_SIZE; ii++) {
+ *pbyEepromRegs = SROMbyReadEmbedded(dwIoBase,(BYTE) ii);
+ pbyEepromRegs++;
+ }
+}
+
+
+/*
+ * Description: Write all contents of buffer to eeprom
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * pbyEepromRegs - EEPROM content Buffer
+ * Out:
+ * none
+ *
+ * Return Value: none
+ *
+ */
+void SROMvWriteAllContents (DWORD_PTR dwIoBase, PBYTE pbyEepromRegs)
+{
+ int ii;
+
+ // ii = Rom Address
+ for (ii = 0; ii < EEP_MAX_CONTEXT_SIZE; ii++) {
+ SROMbWriteEmbedded(dwIoBase,(BYTE) ii, *pbyEepromRegs);
+ 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 (DWORD_PTR dwIoBase, PBYTE pbyEtherAddress)
+{
+ BYTE ii;
+
+ // ii = Rom Address
+ for (ii = 0; ii < U_ETHER_ADDR_LEN; ii++) {
+ *pbyEtherAddress = SROMbyReadEmbedded(dwIoBase, ii);
+ pbyEtherAddress++;
+ }
+}
+
+
+/*
+ * Description: Write Ethernet Address from buffer to eeprom
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * pbyEtherAddress - Ethernet Address buffer
+ * Out:
+ * none
+ *
+ * Return Value: none
+ *
+ */
+void SROMvWriteEtherAddress (DWORD_PTR dwIoBase, PBYTE pbyEtherAddress)
+{
+ BYTE ii;
+
+ // ii = Rom Address
+ for (ii = 0; ii < U_ETHER_ADDR_LEN; ii++) {
+ SROMbWriteEmbedded(dwIoBase, ii, *pbyEtherAddress);
+ pbyEtherAddress++;
+ }
+}
+
+
+/*
+ * Description: Read Sub_VID and Sub_SysId from eeprom to buffer
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * Out:
+ * pdwSubSysVenId - Sub_VID and Sub_SysId read
+ *
+ * Return Value: none
+ *
+ */
+void SROMvReadSubSysVenId (DWORD_PTR dwIoBase, PDWORD pdwSubSysVenId)
+{
+ PBYTE pbyData;
+
+ pbyData = (PBYTE)pdwSubSysVenId;
+ // sub vendor
+ *pbyData = SROMbyReadEmbedded(dwIoBase, 6);
+ *(pbyData+1) = SROMbyReadEmbedded(dwIoBase, 7);
+ // sub system
+ *(pbyData+2) = SROMbyReadEmbedded(dwIoBase, 8);
+ *(pbyData+3) = SROMbyReadEmbedded(dwIoBase, 9);
+}
+
+/*
+ * Description: Auto Load EEPROM to MAC register
+ *
+ * Parameters:
+ * In:
+ * dwIoBase - I/O base address
+ * Out:
+ * none
+ *
+ * Return Value: TRUE if success; otherwise FALSE
+ *
+ */
+BOOL SROMbAutoLoad (DWORD_PTR dwIoBase)
+{
+ BYTE byWait;
+ int ii;
+
+ BYTE byOrg;
+
+ VNSvInPortB(dwIoBase + MAC_REG_I2MCFG, &byOrg);
+ // turn on hardware retry
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, (byOrg | I2MCFG_NORETRY));
+
+ MACvRegBitsOn(dwIoBase, MAC_REG_I2MCSR, I2MCSR_AUTOLD);
+
+ // ii = Rom Address
+ for (ii = 0; ii < EEP_MAX_CONTEXT_SIZE; ii++) {
+ MACvTimer0MicroSDelay(dwIoBase, CB_EEPROM_READBYTE_WAIT);
+ VNSvInPortB(dwIoBase + MAC_REG_I2MCSR, &byWait);
+ if (BITbIsBitOff(byWait, I2MCSR_AUTOLD))
+ break;
+ }
+
+ VNSvOutPortB(dwIoBase + MAC_REG_I2MCFG, byOrg);
+
+ if (ii == EEP_MAX_CONTEXT_SIZE)
+ return FALSE;
+ return TRUE;
+}
+
+
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