system/qemu
system/qemu
1
0
Fork 0
mirror of https://gitlab.com/qemu-project/qemu synced 2024-09-20 19:21:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

e1000.c doesn't properly emulate EERD and ICS registers

Browse source 
Once again, the emulation of the EERD and ICS registers in e1000.c is
incorrect. Nobody has noticed this before because none of the Intel-written
e1000 drivers use these registers, and all of the independently written open
source drivers copy Intel's example, so they don't use them either.
Regardless, these registers are documented in the programmer's manuals, and
their emulated behavior doesn't match the verified behavior of real hardware,
so any software that does use them doesn't function correctly.

-Bill

Signed-off-by: Bill Paul <wpaul@windriver.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Bill Paul 2009-07-29 10:22:55 -07:00 committed by Anthony Liguori
parent 21c9f4cdc6
commit b1332393cd
1 changed files with 9 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
hw/e1000.c
View file

@ -154,6 +154,7 @@ set_interrupt_cause(E1000State *s, int index, uint32_t val)
if (val)
val |= E1000_ICR_INT_ASSERTED;
s->mac_reg[ICR] = val;
s->mac_reg[ICS] = val;
qemu_set_irq(s->dev.irq[0], (s->mac_reg[IMS] & s->mac_reg[ICR]) != 0);
}
@ -286,10 +287,14 @@ flash_eerd_read(E1000State *s, int x)
{
unsigned int index, r = s->mac_reg[EERD] & ~E1000_EEPROM_RW_REG_START;
if ((s->mac_reg[EERD] & E1000_EEPROM_RW_REG_START) == 0)
return (s->mac_reg[EERD]);
if ((index = r >> E1000_EEPROM_RW_ADDR_SHIFT) > EEPROM_CHECKSUM_REG)
return 0;
return (s->eeprom_data[index] << E1000_EEPROM_RW_REG_DATA) |
E1000_EEPROM_RW_REG_DONE | r;
return (E1000_EEPROM_RW_REG_DONE | r);
return ((s->eeprom_data[index] << E1000_EEPROM_RW_REG_DATA) |
E1000_EEPROM_RW_REG_DONE | r);
}
static void
@ -780,7 +785,7 @@ static uint32_t (*macreg_readops[])(E1000State *, int) = {
getreg(WUFC), getreg(TDT), getreg(CTRL), getreg(LEDCTL),
getreg(MANC), getreg(MDIC), getreg(SWSM), getreg(STATUS),
getreg(TORL), getreg(TOTL), getreg(IMS), getreg(TCTL),
getreg(RDH), getreg(RDT), getreg(VET),
getreg(RDH), getreg(RDT), getreg(VET), getreg(ICS),
[TOTH] = mac_read_clr8, [TORH] = mac_read_clr8, [GPRC] = mac_read_clr4,
[GPTC] = mac_read_clr4, [TPR] = mac_read_clr4, [TPT] = mac_read_clr4,