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fix for bad macaddr of e1000 in Windows 2003 server with original MS driver 

The sequence of reading from eeprom is "offset by one" moved because of a false
detection of a clock cycle after an eeprom reset. Keeping the last clock value
after a reset keeps it in sync.

Signed-off-by: Naphtali Sprei <nsprei@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Naphtali Sprei 2009-07-16 18:17:53 +03:00 committed by Anthony Liguori
parent f35199864c
commit 356c7ff4b6
1 changed files with 5 additions and 0 deletions
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5
hw/e1000.c
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@ -261,6 +261,11 @@ set_eecd(E1000State *s, int index, uint32_t val)
} }
if (!(val & E1000_EECD_CS)) { // rising, no CS (EEPROM reset) if (!(val & E1000_EECD_CS)) { // rising, no CS (EEPROM reset)
memset(&s->eecd_state, 0, sizeof s->eecd_state); memset(&s->eecd_state, 0, sizeof s->eecd_state);
/*
* restore old_eecd's E1000_EECD_SK (known to be on)
* to avoid false detection of a clock edge
*/
s->eecd_state.old_eecd = E1000_EECD_SK;
return; return;
} }
s->eecd_state.val_in <<= 1; s->eecd_state.val_in <<= 1;