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++;
+	}
+}