From dd0f5b33a34400fc1f7ffa67988f63c2ee1c14f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20E=C3=9Fer?= <se@FreeBSD.org>
Date: Wed, 18 Dec 1996 01:20:32 +0000
Subject: [PATCH] Add code to fill the EEPROM buffer with default values, if no
 EEPROM was found, or if there was a checksum mismatch. This patch should
 allow the driver to be used with any AMD 53c974 based SCSI card, or with the
 AMD SCSI+Ethernet Combo Chip found on some motherboards.

---
 sys/pci/tek390.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/sys/pci/tek390.c b/sys/pci/tek390.c
index 5139a0fc12d2..54dfaac00067 100644
--- a/sys/pci/tek390.c
+++ b/sys/pci/tek390.c
@@ -150,6 +150,7 @@ UCHAR  DC390_EEpromInDO( USHORT mechnum );
 USHORT EEpromGetData1( USHORT mechnum );
 void   DC390_Prepare( USHORT mechnum, PUCHAR regval, UCHAR EEpromCmd );
 void   DC390_ReadEEprom( USHORT mechnum, USHORT index );
+USHORT DC390_DefaultEEprom( USHORT mechnum, USHORT index );
 USHORT DC390_CheckEEpromCheckSum( USHORT MechNum, USHORT index );
 USHORT DC390_ToMech( USHORT Mechnum, pcici_t config_id );
 
@@ -1491,6 +1492,26 @@ DC390_ReadEEprom( USHORT mechnum, USHORT index )
 }
 
 
+USHORT
+DC390_DefaultEEprom( USHORT mechnum, USHORT index )
+{
+    PUCHAR  ptr;
+    USHORT  i;
+
+    ptr = (PUCHAR) &eepromBuf[index][0];
+    bzero (ptr, sizeof eepromBuf[index]);
+    for(i=0; i<0x40; i++)
+    {
+	*ptr = (TAG_QUEUING_|EN_DISCONNECT_|SYNC_NEGO_|PARITY_CHK_);
+	ptr += 4;
+    }
+    ptr[EE_ADAPT_SCSI_ID] = 7;
+    ptr[EE_MODE2] = (LUN_CHECK|ACTIVE_NEGATION);
+    ptr[EE_TAG_CMD_NUM] = 4;
+    return 0;
+}
+
+
 USHORT
 DC390_CheckEEpromCheckSum( USHORT MechNum, USHORT index )
 {
@@ -1505,7 +1526,7 @@ DC390_CheckEEpromCheckSum( USHORT MechNum, USHORT index )
     if( wval == 0x1234 )
 	rc = 0;
     else
-	rc = -1;
+	rc = DC390_DefaultEEprom( MechNum, index);
     return( rc );
 }